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" |
2b2558bf | 43 | #include "dwarf2/stringify.h" |
4de283e4 TT |
44 | #include "bfd.h" |
45 | #include "elf-bfd.h" | |
46 | #include "symtab.h" | |
47 | #include "gdbtypes.h" | |
48 | #include "objfiles.h" | |
d55e5aa6 | 49 | #include "dwarf2.h" |
4de283e4 TT |
50 | #include "buildsym.h" |
51 | #include "demangle.h" | |
52 | #include "gdb-demangle.h" | |
4de283e4 | 53 | #include "filenames.h" /* for DOSish file names */ |
4de283e4 TT |
54 | #include "language.h" |
55 | #include "complaints.h" | |
82ca8957 TT |
56 | #include "dwarf2/expr.h" |
57 | #include "dwarf2/loc.h" | |
4de283e4 TT |
58 | #include "cp-support.h" |
59 | #include "hashtab.h" | |
60 | #include "command.h" | |
d55e5aa6 | 61 | #include "gdbcmd.h" |
4de283e4 TT |
62 | #include "block.h" |
63 | #include "addrmap.h" | |
64 | #include "typeprint.h" | |
65 | #include "psympriv.h" | |
4de283e4 | 66 | #include "c-lang.h" |
d55e5aa6 | 67 | #include "go-lang.h" |
4de283e4 TT |
68 | #include "valprint.h" |
69 | #include "gdbcore.h" /* for gnutarget */ | |
70 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
71 | #include "gdb_bfd.h" |
72 | #include "f-lang.h" | |
73 | #include "source.h" | |
4de283e4 | 74 | #include "build-id.h" |
d55e5aa6 | 75 | #include "namespace.h" |
268a13a5 TT |
76 | #include "gdbsupport/function-view.h" |
77 | #include "gdbsupport/gdb_optional.h" | |
78 | #include "gdbsupport/underlying.h" | |
268a13a5 | 79 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 80 | #include "filename-seen-cache.h" |
b32b108a | 81 | #include "producer.h" |
4de283e4 | 82 | #include <fcntl.h> |
4de283e4 | 83 | #include <algorithm> |
4de283e4 | 84 | #include <unordered_map> |
268a13a5 | 85 | #include "gdbsupport/selftest.h" |
c9317f21 | 86 | #include "rust-lang.h" |
268a13a5 | 87 | #include "gdbsupport/pathstuff.h" |
edd45eb0 | 88 | #include "count-one-bits.h" |
0d79cdc4 | 89 | #include "debuginfod-support.h" |
437afbb8 | 90 | |
73be47f5 DE |
91 | /* When == 1, print basic high level tracing messages. |
92 | When > 1, be more verbose. | |
b4f54984 DE |
93 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
94 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 95 | |
6f738b01 SM |
96 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 1. */ |
97 | ||
98 | #define dwarf_read_debug_printf(fmt, ...) \ | |
74b773fc SM |
99 | debug_prefixed_printf_cond (dwarf_read_debug >= 1, "dwarf-read", fmt, \ |
100 | ##__VA_ARGS__) | |
6f738b01 SM |
101 | |
102 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 2. */ | |
103 | ||
104 | #define dwarf_read_debug_printf_v(fmt, ...) \ | |
74b773fc SM |
105 | debug_prefixed_printf_cond (dwarf_read_debug >= 2, "dwarf-read", fmt, \ |
106 | ##__VA_ARGS__) | |
6f738b01 | 107 | |
d97bc12b | 108 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 109 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 110 | |
27e0867f | 111 | /* When non-zero, dump line number entries as they are read in. */ |
8fdd972c | 112 | unsigned int dwarf_line_debug = 0; |
27e0867f | 113 | |
491144b5 CB |
114 | /* When true, cross-check physname against demangler. */ |
115 | static bool check_physname = false; | |
900e11f9 | 116 | |
491144b5 CB |
117 | /* When true, do not reject deprecated .gdb_index sections. */ |
118 | static bool use_deprecated_index_sections = false; | |
481860b3 | 119 | |
17ee85fc TT |
120 | /* This is used to store the data that is always per objfile. */ |
121 | static const objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; | |
122 | ||
123 | /* These are used to store the dwarf2_per_bfd objects. | |
124 | ||
125 | objfiles having the same BFD, which doesn't require relocations, are going to | |
126 | share a dwarf2_per_bfd object, which is held in the _bfd_data_key version. | |
127 | ||
128 | Other objfiles are not going to share a dwarf2_per_bfd with any other | |
129 | objfiles, so they'll have their own version kept in the _objfile_data_key | |
130 | version. */ | |
131 | static const struct bfd_key<dwarf2_per_bfd> dwarf2_per_bfd_bfd_data_key; | |
132 | static const struct objfile_key<dwarf2_per_bfd> dwarf2_per_bfd_objfile_data_key; | |
6502dd73 | 133 | |
f1e6e072 TT |
134 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
135 | ||
136 | static int dwarf2_locexpr_index; | |
137 | static int dwarf2_loclist_index; | |
138 | static int dwarf2_locexpr_block_index; | |
139 | static int dwarf2_loclist_block_index; | |
140 | ||
41144253 | 141 | /* Size of .debug_loclists section header for 32-bit DWARF format. */ |
142 | #define LOCLIST_HEADER_SIZE32 12 | |
143 | ||
144 | /* Size of .debug_loclists section header for 64-bit DWARF format. */ | |
145 | #define LOCLIST_HEADER_SIZE64 20 | |
146 | ||
d0ce17d8 CT |
147 | /* Size of .debug_rnglists section header for 32-bit DWARF format. */ |
148 | #define RNGLIST_HEADER_SIZE32 12 | |
149 | ||
150 | /* Size of .debug_rnglists section header for 64-bit DWARF format. */ | |
151 | #define RNGLIST_HEADER_SIZE64 20 | |
152 | ||
3f563c84 PA |
153 | /* An index into a (C++) symbol name component in a symbol name as |
154 | recorded in the mapped_index's symbol table. For each C++ symbol | |
155 | in the symbol table, we record one entry for the start of each | |
156 | component in the symbol in a table of name components, and then | |
157 | sort the table, in order to be able to binary search symbol names, | |
158 | ignoring leading namespaces, both completion and regular look up. | |
159 | For example, for symbol "A::B::C", we'll have an entry that points | |
160 | to "A::B::C", another that points to "B::C", and another for "C". | |
161 | Note that function symbols in GDB index have no parameter | |
162 | information, just the function/method names. You can convert a | |
163 | name_component to a "const char *" using the | |
164 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
165 | ||
166 | struct name_component | |
167 | { | |
168 | /* Offset in the symbol name where the component starts. Stored as | |
169 | a (32-bit) offset instead of a pointer to save memory and improve | |
170 | locality on 64-bit architectures. */ | |
171 | offset_type name_offset; | |
172 | ||
173 | /* The symbol's index in the symbol and constant pool tables of a | |
174 | mapped_index. */ | |
175 | offset_type idx; | |
176 | }; | |
177 | ||
44ed8f3e PA |
178 | /* Base class containing bits shared by both .gdb_index and |
179 | .debug_name indexes. */ | |
180 | ||
181 | struct mapped_index_base | |
182 | { | |
22ca247e TT |
183 | mapped_index_base () = default; |
184 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
185 | ||
44ed8f3e PA |
186 | /* The name_component table (a sorted vector). See name_component's |
187 | description above. */ | |
188 | std::vector<name_component> name_components; | |
189 | ||
190 | /* How NAME_COMPONENTS is sorted. */ | |
191 | enum case_sensitivity name_components_casing; | |
192 | ||
193 | /* Return the number of names in the symbol table. */ | |
194 | virtual size_t symbol_name_count () const = 0; | |
195 | ||
196 | /* Get the name of the symbol at IDX in the symbol table. */ | |
fcf23d5b SM |
197 | virtual const char *symbol_name_at |
198 | (offset_type idx, dwarf2_per_objfile *per_objfile) const = 0; | |
44ed8f3e PA |
199 | |
200 | /* Return whether the name at IDX in the symbol table should be | |
201 | ignored. */ | |
202 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
203 | { | |
204 | return false; | |
205 | } | |
206 | ||
207 | /* Build the symbol name component sorted vector, if we haven't | |
208 | yet. */ | |
fcf23d5b | 209 | void build_name_components (dwarf2_per_objfile *per_objfile); |
44ed8f3e PA |
210 | |
211 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
212 | possible matches for LN_NO_PARAMS in the name component | |
213 | vector. */ | |
214 | std::pair<std::vector<name_component>::const_iterator, | |
215 | std::vector<name_component>::const_iterator> | |
3b00ef10 | 216 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
fcf23d5b SM |
217 | enum language lang, |
218 | dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
219 | |
220 | /* Prevent deleting/destroying via a base class pointer. */ | |
221 | protected: | |
222 | ~mapped_index_base() = default; | |
223 | }; | |
224 | ||
9291a0cd TT |
225 | /* A description of the mapped index. The file format is described in |
226 | a comment by the code that writes the index. */ | |
fc898b42 | 227 | struct mapped_index final : public mapped_index_base |
9291a0cd | 228 | { |
f00a2de2 PA |
229 | /* A slot/bucket in the symbol table hash. */ |
230 | struct symbol_table_slot | |
231 | { | |
232 | const offset_type name; | |
233 | const offset_type vec; | |
234 | }; | |
235 | ||
559a7a62 | 236 | /* Index data format version. */ |
3063847f | 237 | int version = 0; |
559a7a62 | 238 | |
f00a2de2 PA |
239 | /* The address table data. */ |
240 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 241 | |
3876f04e | 242 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 243 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 244 | |
9291a0cd | 245 | /* A pointer to the constant pool. */ |
3063847f | 246 | const char *constant_pool = nullptr; |
3f563c84 | 247 | |
44ed8f3e PA |
248 | bool symbol_name_slot_invalid (offset_type idx) const override |
249 | { | |
250 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 251 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 252 | } |
5c58de74 | 253 | |
3f563c84 PA |
254 | /* Convenience method to get at the name of the symbol at IDX in the |
255 | symbol table. */ | |
fcf23d5b SM |
256 | const char *symbol_name_at |
257 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
f00a2de2 | 258 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 259 | |
44ed8f3e PA |
260 | size_t symbol_name_count () const override |
261 | { return this->symbol_table.size (); } | |
9291a0cd TT |
262 | }; |
263 | ||
927aa2e7 JK |
264 | /* A description of the mapped .debug_names. |
265 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 266 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 JK |
267 | { |
268 | bfd_endian dwarf5_byte_order; | |
269 | bool dwarf5_is_dwarf64; | |
270 | bool augmentation_is_gdb; | |
271 | uint8_t offset_size; | |
272 | uint32_t cu_count = 0; | |
273 | uint32_t tu_count, bucket_count, name_count; | |
274 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
275 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
276 | const gdb_byte *name_table_string_offs_reordered; | |
277 | const gdb_byte *name_table_entry_offs_reordered; | |
278 | const gdb_byte *entry_pool; | |
279 | ||
280 | struct index_val | |
281 | { | |
282 | ULONGEST dwarf_tag; | |
283 | struct attr | |
284 | { | |
285 | /* Attribute name DW_IDX_*. */ | |
286 | ULONGEST dw_idx; | |
287 | ||
288 | /* Attribute form DW_FORM_*. */ | |
289 | ULONGEST form; | |
290 | ||
291 | /* Value if FORM is DW_FORM_implicit_const. */ | |
292 | LONGEST implicit_const; | |
293 | }; | |
294 | std::vector<attr> attr_vec; | |
295 | }; | |
296 | ||
297 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
298 | ||
fcf23d5b SM |
299 | const char *namei_to_name |
300 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
301 | |
302 | /* Implementation of the mapped_index_base virtual interface, for | |
303 | the name_components cache. */ | |
304 | ||
fcf23d5b SM |
305 | const char *symbol_name_at |
306 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
307 | { return namei_to_name (idx, per_objfile); } | |
44ed8f3e PA |
308 | |
309 | size_t symbol_name_count () const override | |
310 | { return this->name_count; } | |
927aa2e7 JK |
311 | }; |
312 | ||
cd4fb1b2 | 313 | /* See dwarf2read.h. */ |
ed2dc618 | 314 | |
cd4fb1b2 | 315 | dwarf2_per_objfile * |
ed2dc618 SM |
316 | get_dwarf2_per_objfile (struct objfile *objfile) |
317 | { | |
5bfd760d | 318 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 319 | } |
c906108c | 320 | |
251d32d9 | 321 | /* Default names of the debugging sections. */ |
c906108c | 322 | |
233a11ab CS |
323 | /* Note that if the debugging section has been compressed, it might |
324 | have a name like .zdebug_info. */ | |
325 | ||
9cdd5dbd DE |
326 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
327 | { | |
251d32d9 TG |
328 | { ".debug_info", ".zdebug_info" }, |
329 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
330 | { ".debug_line", ".zdebug_line" }, | |
331 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 332 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 333 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 334 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 335 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 336 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 337 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 338 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 339 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 340 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 341 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
342 | { ".debug_frame", ".zdebug_frame" }, |
343 | { ".eh_frame", NULL }, | |
24d3216f | 344 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
345 | { ".debug_names", ".zdebug_names" }, |
346 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 347 | 23 |
251d32d9 | 348 | }; |
c906108c | 349 | |
80626a55 | 350 | /* List of DWO/DWP sections. */ |
3019eac3 | 351 | |
80626a55 | 352 | static const struct dwop_section_names |
3019eac3 DE |
353 | { |
354 | struct dwarf2_section_names abbrev_dwo; | |
355 | struct dwarf2_section_names info_dwo; | |
356 | struct dwarf2_section_names line_dwo; | |
357 | struct dwarf2_section_names loc_dwo; | |
43988095 | 358 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
359 | struct dwarf2_section_names macinfo_dwo; |
360 | struct dwarf2_section_names macro_dwo; | |
d0ce17d8 | 361 | struct dwarf2_section_names rnglists_dwo; |
3019eac3 DE |
362 | struct dwarf2_section_names str_dwo; |
363 | struct dwarf2_section_names str_offsets_dwo; | |
364 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
365 | struct dwarf2_section_names cu_index; |
366 | struct dwarf2_section_names tu_index; | |
3019eac3 | 367 | } |
80626a55 | 368 | dwop_section_names = |
3019eac3 DE |
369 | { |
370 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
371 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
372 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
373 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 374 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
375 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
376 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
d0ce17d8 | 377 | { ".debug_rnglists.dwo", ".zdebug_rnglists.dwo" }, |
3019eac3 DE |
378 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
379 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
380 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
381 | { ".debug_cu_index", ".zdebug_cu_index" }, |
382 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
383 | }; |
384 | ||
c906108c SS |
385 | /* local data types */ |
386 | ||
d0ce17d8 CT |
387 | /* The location list and range list sections (.debug_loclists & .debug_rnglists) |
388 | begin with a header, which contains the following information. */ | |
389 | struct loclists_rnglists_header | |
41144253 | 390 | { |
391 | /* A 4-byte or 12-byte length containing the length of the | |
392 | set of entries for this compilation unit, not including the | |
393 | length field itself. */ | |
394 | unsigned int length; | |
395 | ||
396 | /* A 2-byte version identifier. */ | |
397 | short version; | |
398 | ||
399 | /* A 1-byte unsigned integer containing the size in bytes of an address on | |
400 | the target system. */ | |
401 | unsigned char addr_size; | |
402 | ||
403 | /* A 1-byte unsigned integer containing the size in bytes of a segment selector | |
404 | on the target system. */ | |
405 | unsigned char segment_collector_size; | |
406 | ||
407 | /* A 4-byte count of the number of offsets that follow the header. */ | |
408 | unsigned int offset_entry_count; | |
409 | }; | |
410 | ||
3da10d80 KS |
411 | /* Type used for delaying computation of method physnames. |
412 | See comments for compute_delayed_physnames. */ | |
413 | struct delayed_method_info | |
414 | { | |
415 | /* The type to which the method is attached, i.e., its parent class. */ | |
416 | struct type *type; | |
417 | ||
418 | /* The index of the method in the type's function fieldlists. */ | |
419 | int fnfield_index; | |
420 | ||
421 | /* The index of the method in the fieldlist. */ | |
422 | int index; | |
423 | ||
424 | /* The name of the DIE. */ | |
425 | const char *name; | |
426 | ||
427 | /* The DIE associated with this method. */ | |
428 | struct die_info *die; | |
429 | }; | |
430 | ||
e7c27a73 DJ |
431 | /* Internal state when decoding a particular compilation unit. */ |
432 | struct dwarf2_cu | |
433 | { | |
9e021579 SM |
434 | explicit dwarf2_cu (dwarf2_per_cu_data *per_cu, |
435 | dwarf2_per_objfile *per_objfile); | |
fcd3b13d SM |
436 | |
437 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
438 | ||
c24bdb02 KS |
439 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
440 | Create the set of symtabs used by this TU, or if this TU is sharing | |
441 | symtabs with another TU and the symtabs have already been created | |
442 | then restore those symtabs in the line header. | |
443 | We don't need the pc/line-number mapping for type units. */ | |
444 | void setup_type_unit_groups (struct die_info *die); | |
445 | ||
446 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
447 | buildsym_compunit constructor. */ | |
448 | struct compunit_symtab *start_symtab (const char *name, | |
449 | const char *comp_dir, | |
450 | CORE_ADDR low_pc); | |
451 | ||
452 | /* Reset the builder. */ | |
453 | void reset_builder () { m_builder.reset (); } | |
454 | ||
293e7e51 SM |
455 | /* Return a type that is a generic pointer type, the size of which |
456 | matches the address size given in the compilation unit header for | |
457 | this CU. */ | |
458 | struct type *addr_type () const; | |
459 | ||
460 | /* Find an integer type the same size as the address size given in | |
461 | the compilation unit header for this CU. UNSIGNED_P controls if | |
462 | the integer is unsigned or not. */ | |
463 | struct type *addr_sized_int_type (bool unsigned_p) const; | |
464 | ||
d00adf39 | 465 | /* The header of the compilation unit. */ |
fcd3b13d | 466 | struct comp_unit_head header {}; |
e142c38c | 467 | |
d00adf39 | 468 | /* Base address of this compilation unit. */ |
2b24b6e4 | 469 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 470 | |
e142c38c | 471 | /* The language we are debugging. */ |
fcd3b13d SM |
472 | enum language language = language_unknown; |
473 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 474 | |
fcd3b13d | 475 | const char *producer = nullptr; |
b0f35d58 | 476 | |
c24bdb02 | 477 | private: |
804d2729 TT |
478 | /* The symtab builder for this CU. This is only non-NULL when full |
479 | symbols are being read. */ | |
c24bdb02 | 480 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 481 | |
c24bdb02 | 482 | public: |
e142c38c DJ |
483 | /* The generic symbol table building routines have separate lists for |
484 | file scope symbols and all all other scopes (local scopes). So | |
485 | we need to select the right one to pass to add_symbol_to_list(). | |
486 | We do it by keeping a pointer to the correct list in list_in_scope. | |
487 | ||
488 | FIXME: The original dwarf code just treated the file scope as the | |
489 | first local scope, and all other local scopes as nested local | |
490 | scopes, and worked fine. Check to see if we really need to | |
491 | distinguish these in buildsym.c. */ | |
fcd3b13d | 492 | struct pending **list_in_scope = nullptr; |
e142c38c | 493 | |
b64f50a1 JK |
494 | /* Hash table holding all the loaded partial DIEs |
495 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 496 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
497 | |
498 | /* Storage for things with the same lifetime as this read-in compilation | |
499 | unit, including partial DIEs. */ | |
fcd3b13d | 500 | auto_obstack comp_unit_obstack; |
72bf9492 | 501 | |
69d751e3 | 502 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
503 | struct dwarf2_per_cu_data *per_cu; |
504 | ||
9e021579 | 505 | /* The dwarf2_per_objfile that owns this. */ |
976ca316 | 506 | dwarf2_per_objfile *per_objfile; |
9e021579 | 507 | |
ae038cb0 | 508 | /* How many compilation units ago was this CU last referenced? */ |
fcd3b13d | 509 | int last_used = 0; |
ae038cb0 | 510 | |
b64f50a1 JK |
511 | /* A hash table of DIE cu_offset for following references with |
512 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 513 | htab_t die_hash = nullptr; |
10b3939b DJ |
514 | |
515 | /* Full DIEs if read in. */ | |
fcd3b13d | 516 | struct die_info *dies = nullptr; |
10b3939b DJ |
517 | |
518 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
519 | units referenced by this one. Only set during full symbol processing; | |
520 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 521 | htab_t dependencies = nullptr; |
10b3939b | 522 | |
cb1df416 | 523 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 524 | struct line_header *line_header = nullptr; |
4c8aa72d | 525 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
5989a64e | 526 | it's owned by dwarf2_per_bfd::line_header_hash. If non-NULL, |
4c8aa72d PA |
527 | this is the DW_TAG_compile_unit die for this CU. We'll hold on |
528 | to the line header as long as this DIE is being processed. See | |
529 | process_die_scope. */ | |
fcd3b13d | 530 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 531 | |
3da10d80 KS |
532 | /* A list of methods which need to have physnames computed |
533 | after all type information has been read. */ | |
c89b44cd | 534 | std::vector<delayed_method_info> method_list; |
3da10d80 | 535 | |
96408a79 | 536 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 537 | htab_t call_site_htab = nullptr; |
96408a79 | 538 | |
034e5797 DE |
539 | /* Non-NULL if this CU came from a DWO file. |
540 | There is an invariant here that is important to remember: | |
541 | Except for attributes copied from the top level DIE in the "main" | |
542 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 543 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
544 | Either there isn't a DWO file (in which case this is NULL and the point |
545 | is moot), or there is and either we're not going to read it (in which | |
546 | case this is NULL) or there is and we are reading it (in which case this | |
547 | is non-NULL). */ | |
fcd3b13d | 548 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 549 | |
18a8505e | 550 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 551 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 552 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 553 | |
2b0c7f41 SM |
554 | /* The DW_AT_GNU_ranges_base attribute, if present. |
555 | ||
556 | This is only relevant in the context of pre-DWARF 5 split units. In this | |
557 | context, there is a .debug_ranges section in the linked executable, | |
558 | containing all the ranges data for all the compilation units. Each | |
559 | skeleton/stub unit has (if needed) a DW_AT_GNU_ranges_base attribute that | |
560 | indicates the base of its contribution to that section. The DW_AT_ranges | |
561 | attributes in the split-unit are of the form DW_FORM_sec_offset and point | |
562 | into the .debug_ranges section of the linked file. However, they are not | |
563 | "true" DW_FORM_sec_offset, because they are relative to the base of their | |
564 | compilation unit's contribution, rather than relative to the beginning of | |
565 | the section. The DW_AT_GNU_ranges_base value must be added to it to make | |
566 | it relative to the beginning of the section. | |
567 | ||
568 | Note that the value is zero when we are not in a pre-DWARF 5 split-unit | |
569 | case, so this value can be added without needing to know whether we are in | |
570 | this case or not. | |
571 | ||
572 | N.B. If a DW_AT_ranges attribute is found on the DW_TAG_compile_unit in the | |
573 | skeleton/stub, it must not have the base added, as it already points to the | |
574 | right place. And since the DW_TAG_compile_unit DIE in the split-unit can't | |
575 | have a DW_AT_ranges attribute, we can use the | |
576 | ||
577 | die->tag != DW_AT_compile_unit | |
578 | ||
579 | to determine whether the base should be added or not. */ | |
580 | ULONGEST gnu_ranges_base = 0; | |
581 | ||
582 | /* The DW_AT_rnglists_base attribute, if present. | |
583 | ||
584 | This is used when processing attributes of form DW_FORM_rnglistx in | |
585 | non-split units. Attributes of this form found in a split unit don't | |
586 | use it, as split-unit files have their own non-shared .debug_rnglists.dwo | |
587 | section. */ | |
588 | ULONGEST rnglists_base = 0; | |
2e3cf129 | 589 | |
41144253 | 590 | /* The DW_AT_loclists_base attribute if present. */ |
591 | ULONGEST loclist_base = 0; | |
592 | ||
c9317f21 TT |
593 | /* When reading debug info generated by older versions of rustc, we |
594 | have to rewrite some union types to be struct types with a | |
595 | variant part. This rewriting must be done after the CU is fully | |
596 | read in, because otherwise at the point of rewriting some struct | |
597 | type might not have been fully processed. So, we keep a list of | |
598 | all such types here and process them after expansion. */ | |
599 | std::vector<struct type *> rust_unions; | |
600 | ||
18a8505e AT |
601 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
602 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
603 | value is often implicit and is the size of the header of | |
604 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
605 | gdb::optional<ULONGEST> str_offsets_base; | |
606 | ||
ae038cb0 | 607 | /* Mark used when releasing cached dies. */ |
9068261f | 608 | bool mark : 1; |
ae038cb0 | 609 | |
8be455d7 JK |
610 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
611 | This test is imperfect as there may exist optimized debug code not using | |
612 | any location list and still facing inlining issues if handled as | |
613 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 614 | bool has_loclist : 1; |
ba919b58 | 615 | |
9068261f | 616 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
617 | if all the producer_is_* fields are valid. This information is cached |
618 | because profiling CU expansion showed excessive time spent in | |
619 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
620 | bool checked_producer : 1; |
621 | bool producer_is_gxx_lt_4_6 : 1; | |
622 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 623 | bool producer_is_icc : 1; |
9068261f | 624 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 625 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 626 | |
9068261f | 627 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
628 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
629 | this information, but later versions do. */ | |
630 | ||
9068261f | 631 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
632 | |
633 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
634 | |
635 | /* If this CU was inherited by another CU (via specification, | |
636 | abstract_origin, etc), this is the ancestor CU. */ | |
637 | dwarf2_cu *ancestor; | |
638 | ||
639 | /* Get the buildsym_compunit for this CU. */ | |
640 | buildsym_compunit *get_builder () | |
641 | { | |
642 | /* If this CU has a builder associated with it, use that. */ | |
643 | if (m_builder != nullptr) | |
644 | return m_builder.get (); | |
645 | ||
646 | /* Otherwise, search ancestors for a valid builder. */ | |
647 | if (ancestor != nullptr) | |
648 | return ancestor->get_builder (); | |
649 | ||
650 | return nullptr; | |
651 | } | |
e7c27a73 DJ |
652 | }; |
653 | ||
094b34ac DE |
654 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
655 | This includes type_unit_group and quick_file_names. */ | |
656 | ||
657 | struct stmt_list_hash | |
658 | { | |
659 | /* The DWO unit this table is from or NULL if there is none. */ | |
660 | struct dwo_unit *dwo_unit; | |
661 | ||
662 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 663 | sect_offset line_sect_off; |
094b34ac DE |
664 | }; |
665 | ||
5989a64e | 666 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
667 | an object of this type. This contains elements of type unit groups |
668 | that can be shared across objfiles. The non-shareable parts are in | |
669 | type_unit_group_unshareable. */ | |
f4dc4d17 DE |
670 | |
671 | struct type_unit_group | |
672 | { | |
0186c6a7 | 673 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
674 | To simplify things we create an artificial CU that "includes" all the |
675 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 676 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
677 | struct dwarf2_per_cu_data per_cu; |
678 | ||
0186c6a7 DE |
679 | /* The TUs that share this DW_AT_stmt_list entry. |
680 | This is added to while parsing type units to build partial symtabs, | |
681 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 682 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 683 | |
094b34ac DE |
684 | /* The data used to construct the hash key. */ |
685 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
686 | }; |
687 | ||
73869dc2 | 688 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
689 | |
690 | struct dwo_sections | |
691 | { | |
692 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
693 | struct dwarf2_section_info line; |
694 | struct dwarf2_section_info loc; | |
43988095 | 695 | struct dwarf2_section_info loclists; |
09262596 DE |
696 | struct dwarf2_section_info macinfo; |
697 | struct dwarf2_section_info macro; | |
d0ce17d8 | 698 | struct dwarf2_section_info rnglists; |
3019eac3 DE |
699 | struct dwarf2_section_info str; |
700 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
701 | /* In the case of a virtual DWO file, these two are unused. */ |
702 | struct dwarf2_section_info info; | |
fd5866f6 | 703 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
704 | }; |
705 | ||
c88ee1f0 | 706 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
707 | |
708 | struct dwo_unit | |
709 | { | |
710 | /* Backlink to the containing struct dwo_file. */ | |
711 | struct dwo_file *dwo_file; | |
712 | ||
713 | /* The "id" that distinguishes this CU/TU. | |
714 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
715 | Since signatures came first, we stick with it for consistency. */ | |
716 | ULONGEST signature; | |
717 | ||
718 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 719 | struct dwarf2_section_info *section; |
3019eac3 | 720 | |
9c541725 PA |
721 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
722 | sect_offset sect_off; | |
3019eac3 DE |
723 | unsigned int length; |
724 | ||
725 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
726 | cu_offset type_offset_in_tu; | |
727 | }; | |
728 | ||
73869dc2 DE |
729 | /* include/dwarf2.h defines the DWP section codes. |
730 | It defines a max value but it doesn't define a min value, which we | |
731 | use for error checking, so provide one. */ | |
732 | ||
733 | enum dwp_v2_section_ids | |
734 | { | |
735 | DW_SECT_MIN = 1 | |
736 | }; | |
737 | ||
80626a55 | 738 | /* Data for one DWO file. |
57d63ce2 DE |
739 | |
740 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
741 | appears in a DWP file). DWP files don't really have DWO files per se - | |
742 | comdat folding of types "loses" the DWO file they came from, and from | |
743 | a high level view DWP files appear to contain a mass of random types. | |
744 | However, to maintain consistency with the non-DWP case we pretend DWP | |
745 | files contain virtual DWO files, and we assign each TU with one virtual | |
746 | DWO file (generally based on the line and abbrev section offsets - | |
747 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
748 | |
749 | struct dwo_file | |
750 | { | |
51ac9db5 SM |
751 | dwo_file () = default; |
752 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
753 | ||
18a8505e | 754 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
755 | For virtual DWO files the name is constructed from the section offsets |
756 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
757 | from related CU+TUs. */ | |
51ac9db5 | 758 | const char *dwo_name = nullptr; |
0ac5b59e DE |
759 | |
760 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 761 | const char *comp_dir = nullptr; |
3019eac3 | 762 | |
80626a55 DE |
763 | /* The bfd, when the file is open. Otherwise this is NULL. |
764 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 765 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 766 | |
73869dc2 | 767 | /* The sections that make up this DWO file. |
d2854d8d | 768 | Remember that for virtual DWO files in DWP V2 or DWP V5, these are virtual |
73869dc2 | 769 | sections (for lack of a better name). */ |
51ac9db5 | 770 | struct dwo_sections sections {}; |
3019eac3 | 771 | |
33c5cd75 DB |
772 | /* The CUs in the file. |
773 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
774 | an extension to handle LLVM's Link Time Optimization output (where | |
775 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 776 | htab_up cus; |
3019eac3 DE |
777 | |
778 | /* Table of TUs in the file. | |
779 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 780 | htab_up tus; |
3019eac3 DE |
781 | }; |
782 | ||
80626a55 DE |
783 | /* These sections are what may appear in a DWP file. */ |
784 | ||
785 | struct dwp_sections | |
786 | { | |
d2854d8d | 787 | /* These are used by all DWP versions (1, 2 and 5). */ |
80626a55 DE |
788 | struct dwarf2_section_info str; |
789 | struct dwarf2_section_info cu_index; | |
790 | struct dwarf2_section_info tu_index; | |
73869dc2 | 791 | |
d2854d8d | 792 | /* These are only used by DWP version 2 and version 5 files. |
73869dc2 DE |
793 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other |
794 | sections are referenced by section number, and are not recorded here. | |
d2854d8d CT |
795 | In DWP version 2 or 5 there is at most one copy of all these sections, |
796 | each section being (effectively) comprised of the concatenation of all of | |
797 | the individual sections that exist in the version 1 format. | |
73869dc2 DE |
798 | To keep the code simple we treat each of these concatenated pieces as a |
799 | section itself (a virtual section?). */ | |
800 | struct dwarf2_section_info abbrev; | |
801 | struct dwarf2_section_info info; | |
802 | struct dwarf2_section_info line; | |
803 | struct dwarf2_section_info loc; | |
d2854d8d | 804 | struct dwarf2_section_info loclists; |
73869dc2 DE |
805 | struct dwarf2_section_info macinfo; |
806 | struct dwarf2_section_info macro; | |
d2854d8d | 807 | struct dwarf2_section_info rnglists; |
73869dc2 DE |
808 | struct dwarf2_section_info str_offsets; |
809 | struct dwarf2_section_info types; | |
80626a55 DE |
810 | }; |
811 | ||
73869dc2 DE |
812 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
813 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 814 | |
73869dc2 | 815 | struct virtual_v1_dwo_sections |
80626a55 DE |
816 | { |
817 | struct dwarf2_section_info abbrev; | |
818 | struct dwarf2_section_info line; | |
819 | struct dwarf2_section_info loc; | |
820 | struct dwarf2_section_info macinfo; | |
821 | struct dwarf2_section_info macro; | |
822 | struct dwarf2_section_info str_offsets; | |
823 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 824 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
825 | struct dwarf2_section_info info_or_types; |
826 | }; | |
827 | ||
d2854d8d | 828 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2 or 5. |
73869dc2 DE |
829 | In version 2, the sections of the DWO files are concatenated together |
830 | and stored in one section of that name. Thus each ELF section contains | |
831 | several "virtual" sections. */ | |
832 | ||
d2854d8d | 833 | struct virtual_v2_or_v5_dwo_sections |
73869dc2 DE |
834 | { |
835 | bfd_size_type abbrev_offset; | |
836 | bfd_size_type abbrev_size; | |
837 | ||
838 | bfd_size_type line_offset; | |
839 | bfd_size_type line_size; | |
840 | ||
841 | bfd_size_type loc_offset; | |
842 | bfd_size_type loc_size; | |
843 | ||
d2854d8d CT |
844 | bfd_size_type loclists_offset; |
845 | bfd_size_type loclists_size; | |
846 | ||
73869dc2 DE |
847 | bfd_size_type macinfo_offset; |
848 | bfd_size_type macinfo_size; | |
849 | ||
850 | bfd_size_type macro_offset; | |
851 | bfd_size_type macro_size; | |
852 | ||
d2854d8d CT |
853 | bfd_size_type rnglists_offset; |
854 | bfd_size_type rnglists_size; | |
855 | ||
73869dc2 DE |
856 | bfd_size_type str_offsets_offset; |
857 | bfd_size_type str_offsets_size; | |
858 | ||
859 | /* Each DWP hash table entry records one CU or one TU. | |
860 | That is recorded here, and copied to dwo_unit.section. */ | |
861 | bfd_size_type info_or_types_offset; | |
862 | bfd_size_type info_or_types_size; | |
863 | }; | |
864 | ||
80626a55 DE |
865 | /* Contents of DWP hash tables. */ |
866 | ||
867 | struct dwp_hash_table | |
868 | { | |
73869dc2 | 869 | uint32_t version, nr_columns; |
80626a55 | 870 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
871 | const gdb_byte *hash_table, *unit_table; |
872 | union | |
873 | { | |
874 | struct | |
875 | { | |
876 | const gdb_byte *indices; | |
877 | } v1; | |
878 | struct | |
879 | { | |
880 | /* This is indexed by column number and gives the id of the section | |
881 | in that column. */ | |
882 | #define MAX_NR_V2_DWO_SECTIONS \ | |
883 | (1 /* .debug_info or .debug_types */ \ | |
884 | + 1 /* .debug_abbrev */ \ | |
885 | + 1 /* .debug_line */ \ | |
886 | + 1 /* .debug_loc */ \ | |
887 | + 1 /* .debug_str_offsets */ \ | |
888 | + 1 /* .debug_macro or .debug_macinfo */) | |
889 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
890 | const gdb_byte *offsets; | |
891 | const gdb_byte *sizes; | |
892 | } v2; | |
d2854d8d CT |
893 | struct |
894 | { | |
895 | /* This is indexed by column number and gives the id of the section | |
896 | in that column. */ | |
897 | #define MAX_NR_V5_DWO_SECTIONS \ | |
898 | (1 /* .debug_info */ \ | |
899 | + 1 /* .debug_abbrev */ \ | |
900 | + 1 /* .debug_line */ \ | |
901 | + 1 /* .debug_loclists */ \ | |
902 | + 1 /* .debug_str_offsets */ \ | |
903 | + 1 /* .debug_macro */ \ | |
904 | + 1 /* .debug_rnglists */) | |
905 | int section_ids[MAX_NR_V5_DWO_SECTIONS]; | |
906 | const gdb_byte *offsets; | |
907 | const gdb_byte *sizes; | |
908 | } v5; | |
73869dc2 | 909 | } section_pool; |
80626a55 DE |
910 | }; |
911 | ||
912 | /* Data for one DWP file. */ | |
913 | ||
914 | struct dwp_file | |
915 | { | |
400174b1 TT |
916 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
917 | : name (name_), | |
918 | dbfd (std::move (abfd)) | |
919 | { | |
920 | } | |
921 | ||
80626a55 DE |
922 | /* Name of the file. */ |
923 | const char *name; | |
924 | ||
73869dc2 | 925 | /* File format version. */ |
400174b1 | 926 | int version = 0; |
73869dc2 | 927 | |
93417882 | 928 | /* The bfd. */ |
400174b1 | 929 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
930 | |
931 | /* Section info for this file. */ | |
400174b1 | 932 | struct dwp_sections sections {}; |
80626a55 | 933 | |
57d63ce2 | 934 | /* Table of CUs in the file. */ |
400174b1 | 935 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
936 | |
937 | /* Table of TUs in the file. */ | |
400174b1 | 938 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 939 | |
19ac8c2e | 940 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
941 | htab_up loaded_cus; |
942 | htab_up loaded_tus; | |
80626a55 | 943 | |
73869dc2 DE |
944 | /* Table to map ELF section numbers to their sections. |
945 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
946 | unsigned int num_sections = 0; |
947 | asection **elf_sections = nullptr; | |
80626a55 DE |
948 | }; |
949 | ||
0963b4bd MS |
950 | /* Struct used to pass misc. parameters to read_die_and_children, et |
951 | al. which are used for both .debug_info and .debug_types dies. | |
952 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 953 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
954 | |
955 | struct die_reader_specs | |
956 | { | |
a32a8923 | 957 | /* The bfd of die_section. */ |
93311388 DE |
958 | bfd* abfd; |
959 | ||
960 | /* The CU of the DIE we are parsing. */ | |
961 | struct dwarf2_cu *cu; | |
962 | ||
80626a55 | 963 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
964 | struct dwo_file *dwo_file; |
965 | ||
dee91e82 | 966 | /* The section the die comes from. |
3019eac3 | 967 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
968 | struct dwarf2_section_info *die_section; |
969 | ||
970 | /* die_section->buffer. */ | |
d521ce57 | 971 | const gdb_byte *buffer; |
f664829e DE |
972 | |
973 | /* The end of the buffer. */ | |
974 | const gdb_byte *buffer_end; | |
a2ce51a0 | 975 | |
685af9cd TT |
976 | /* The abbreviation table to use when reading the DIEs. */ |
977 | struct abbrev_table *abbrev_table; | |
93311388 DE |
978 | }; |
979 | ||
c0ab21c2 TT |
980 | /* A subclass of die_reader_specs that holds storage and has complex |
981 | constructor and destructor behavior. */ | |
982 | ||
983 | class cutu_reader : public die_reader_specs | |
984 | { | |
985 | public: | |
986 | ||
ab432490 SM |
987 | cutu_reader (dwarf2_per_cu_data *this_cu, |
988 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 989 | struct abbrev_table *abbrev_table, |
2e671100 | 990 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
991 | bool skip_partial); |
992 | ||
993 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 994 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
995 | struct dwarf2_cu *parent_cu = nullptr, |
996 | struct dwo_file *dwo_file = nullptr); | |
997 | ||
c0ab21c2 TT |
998 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
999 | ||
1000 | const gdb_byte *info_ptr = nullptr; | |
1001 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
1002 | bool dummy_p = false; |
1003 | ||
6751ebae TT |
1004 | /* Release the new CU, putting it on the chain. This cannot be done |
1005 | for dummy CUs. */ | |
1006 | void keep (); | |
1007 | ||
c0ab21c2 | 1008 | private: |
9e021579 SM |
1009 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
1010 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 1011 | dwarf2_cu *existing_cu); |
c0ab21c2 TT |
1012 | |
1013 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
1014 | std::unique_ptr<dwarf2_cu> m_new_cu; |
1015 | ||
1016 | /* The ordinary abbreviation table. */ | |
1017 | abbrev_table_up m_abbrev_table_holder; | |
1018 | ||
1019 | /* The DWO abbreviation table. */ | |
1020 | abbrev_table_up m_dwo_abbrev_table; | |
1021 | }; | |
dee91e82 | 1022 | |
c906108c | 1023 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1024 | need this much information. */ |
6f06d47b | 1025 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1026 | { |
6f06d47b YQ |
1027 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1028 | ||
1029 | /* Disable assign but still keep copy ctor, which is needed | |
1030 | load_partial_dies. */ | |
1031 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1032 | ||
52356b79 YQ |
1033 | /* Adjust the partial die before generating a symbol for it. This |
1034 | function may set the is_external flag or change the DIE's | |
1035 | name. */ | |
1036 | void fixup (struct dwarf2_cu *cu); | |
1037 | ||
48fbe735 YQ |
1038 | /* Read a minimal amount of information into the minimal die |
1039 | structure. */ | |
1040 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1041 | const struct abbrev_info &abbrev, | |
1042 | const gdb_byte *info_ptr); | |
1043 | ||
7d00ffec TT |
1044 | /* Compute the name of this partial DIE. This memoizes the |
1045 | result, so it is safe to call multiple times. */ | |
1046 | const char *name (dwarf2_cu *cu); | |
1047 | ||
72bf9492 | 1048 | /* Offset of this DIE. */ |
6f06d47b | 1049 | const sect_offset sect_off; |
72bf9492 DJ |
1050 | |
1051 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1052 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1053 | |
72bf9492 | 1054 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1055 | const unsigned int has_children : 1; |
1056 | ||
72bf9492 DJ |
1057 | unsigned int is_external : 1; |
1058 | unsigned int is_declaration : 1; | |
1059 | unsigned int has_type : 1; | |
1060 | unsigned int has_specification : 1; | |
1061 | unsigned int has_pc_info : 1; | |
481860b3 | 1062 | unsigned int may_be_inlined : 1; |
72bf9492 | 1063 | |
0c1b455e TT |
1064 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1065 | unsigned int main_subprogram : 1; | |
1066 | ||
72bf9492 DJ |
1067 | /* Flag set if the SCOPE field of this structure has been |
1068 | computed. */ | |
1069 | unsigned int scope_set : 1; | |
1070 | ||
fa4028e9 JB |
1071 | /* Flag set if the DIE has a byte_size attribute. */ |
1072 | unsigned int has_byte_size : 1; | |
1073 | ||
ff908ebf AW |
1074 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1075 | unsigned int has_const_value : 1; | |
1076 | ||
98bfdba5 PA |
1077 | /* Flag set if any of the DIE's children are template arguments. */ |
1078 | unsigned int has_template_arguments : 1; | |
1079 | ||
52356b79 | 1080 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1081 | unsigned int fixup_called : 1; |
1082 | ||
36586728 TT |
1083 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1084 | unsigned int is_dwz : 1; | |
1085 | ||
1086 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1087 | unsigned int spec_is_dwz : 1; | |
1088 | ||
7d00ffec TT |
1089 | unsigned int canonical_name : 1; |
1090 | ||
72bf9492 | 1091 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1092 | sometimes a default name for unnamed DIEs. */ |
7d00ffec | 1093 | const char *raw_name = nullptr; |
72bf9492 | 1094 | |
abc72ce4 | 1095 | /* The linkage name, if present. */ |
6f06d47b | 1096 | const char *linkage_name = nullptr; |
abc72ce4 | 1097 | |
72bf9492 DJ |
1098 | /* The scope to prepend to our children. This is generally |
1099 | allocated on the comp_unit_obstack, so will disappear | |
1100 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1101 | const char *scope = nullptr; |
72bf9492 | 1102 | |
95554aad TT |
1103 | /* Some data associated with the partial DIE. The tag determines |
1104 | which field is live. */ | |
1105 | union | |
1106 | { | |
1107 | /* The location description associated with this DIE, if any. */ | |
1108 | struct dwarf_block *locdesc; | |
1109 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1110 | sect_offset sect_off; |
6f06d47b | 1111 | } d {}; |
72bf9492 DJ |
1112 | |
1113 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1114 | CORE_ADDR lowpc = 0; |
1115 | CORE_ADDR highpc = 0; | |
72bf9492 | 1116 | |
93311388 | 1117 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1118 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1119 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1120 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1121 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1122 | |
1123 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1124 | DW_AT_specification (or DW_AT_abstract_origin or | |
1125 | DW_AT_extension). */ | |
6f06d47b | 1126 | sect_offset spec_offset {}; |
72bf9492 DJ |
1127 | |
1128 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1129 | if any. */ | |
6f06d47b YQ |
1130 | struct partial_die_info *die_parent = nullptr; |
1131 | struct partial_die_info *die_child = nullptr; | |
1132 | struct partial_die_info *die_sibling = nullptr; | |
1133 | ||
1134 | friend struct partial_die_info * | |
1135 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1136 | ||
1137 | private: | |
1138 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1139 | partial_die_info (sect_offset sect_off) | |
1140 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1141 | { | |
1142 | } | |
1143 | ||
1144 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1145 | int has_children_) | |
1146 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1147 | { | |
1148 | is_external = 0; | |
1149 | is_declaration = 0; | |
1150 | has_type = 0; | |
1151 | has_specification = 0; | |
1152 | has_pc_info = 0; | |
1153 | may_be_inlined = 0; | |
1154 | main_subprogram = 0; | |
1155 | scope_set = 0; | |
1156 | has_byte_size = 0; | |
1157 | has_const_value = 0; | |
1158 | has_template_arguments = 0; | |
1159 | fixup_called = 0; | |
1160 | is_dwz = 0; | |
1161 | spec_is_dwz = 0; | |
7d00ffec | 1162 | canonical_name = 0; |
6f06d47b | 1163 | } |
c906108c SS |
1164 | }; |
1165 | ||
c906108c SS |
1166 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1167 | but this would require a corresponding change in unpack_field_as_long | |
1168 | and friends. */ | |
1169 | static int bits_per_byte = 8; | |
1170 | ||
9c6a1327 TT |
1171 | struct variant_part_builder; |
1172 | ||
1173 | /* When reading a variant, we track a bit more information about the | |
1174 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1175 | |
1176 | struct variant_field | |
1177 | { | |
9c6a1327 TT |
1178 | int first_field = -1; |
1179 | int last_field = -1; | |
1180 | ||
1181 | /* A variant can contain other variant parts. */ | |
1182 | std::vector<variant_part_builder> variant_parts; | |
1183 | ||
2ddeaf8a TT |
1184 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1185 | default branch. */ | |
9c6a1327 TT |
1186 | bool default_branch = false; |
1187 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1188 | value. */ | |
1189 | ULONGEST discriminant_value = 0; | |
1190 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1191 | data. */ | |
1192 | struct dwarf_block *discr_list_data = nullptr; | |
1193 | }; | |
1194 | ||
1195 | /* This represents a DW_TAG_variant_part. */ | |
1196 | ||
1197 | struct variant_part_builder | |
1198 | { | |
1199 | /* The offset of the discriminant field. */ | |
1200 | sect_offset discriminant_offset {}; | |
1201 | ||
1202 | /* Variants that are direct children of this variant part. */ | |
1203 | std::vector<variant_field> variants; | |
1204 | ||
1205 | /* True if we're currently reading a variant. */ | |
1206 | bool processing_variant = false; | |
2ddeaf8a TT |
1207 | }; |
1208 | ||
52059ffd TT |
1209 | struct nextfield |
1210 | { | |
be2daae6 TT |
1211 | int accessibility = 0; |
1212 | int virtuality = 0; | |
9c6a1327 TT |
1213 | /* Variant parts need to find the discriminant, which is a DIE |
1214 | reference. We track the section offset of each field to make | |
1215 | this link. */ | |
1216 | sect_offset offset; | |
be2daae6 | 1217 | struct field field {}; |
52059ffd TT |
1218 | }; |
1219 | ||
1220 | struct fnfieldlist | |
1221 | { | |
be2daae6 TT |
1222 | const char *name = nullptr; |
1223 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1224 | }; |
1225 | ||
c906108c SS |
1226 | /* The routines that read and process dies for a C struct or C++ class |
1227 | pass lists of data member fields and lists of member function fields | |
1228 | in an instance of a field_info structure, as defined below. */ | |
1229 | struct field_info | |
2de01bdb SM |
1230 | { |
1231 | /* List of data member and baseclasses fields. */ | |
1232 | std::vector<struct nextfield> fields; | |
1233 | std::vector<struct nextfield> baseclasses; | |
1234 | ||
1235 | /* Set if the accessibility of one of the fields is not public. */ | |
264fc0e2 | 1236 | bool non_public_fields = false; |
2de01bdb SM |
1237 | |
1238 | /* Member function fieldlist array, contains name of possibly overloaded | |
1239 | member function, number of overloaded member functions and a pointer | |
1240 | to the head of the member function field chain. */ | |
1241 | std::vector<struct fnfieldlist> fnfieldlists; | |
1242 | ||
1243 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1244 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1245 | std::vector<struct decl_field> typedef_field_list; | |
1246 | ||
1247 | /* Nested types defined by this class and the number of elements in this | |
1248 | list. */ | |
1249 | std::vector<struct decl_field> nested_types_list; | |
1250 | ||
1251 | /* If non-null, this is the variant part we are currently | |
1252 | reading. */ | |
1253 | variant_part_builder *current_variant_part = nullptr; | |
1254 | /* This holds all the top-level variant parts attached to the type | |
1255 | we're reading. */ | |
1256 | std::vector<variant_part_builder> variant_parts; | |
1257 | ||
1258 | /* Return the total number of fields (including baseclasses). */ | |
1259 | int nfields () const | |
c5aa993b | 1260 | { |
2de01bdb SM |
1261 | return fields.size () + baseclasses.size (); |
1262 | } | |
1263 | }; | |
c906108c | 1264 | |
ae038cb0 DJ |
1265 | /* Loaded secondary compilation units are kept in memory until they |
1266 | have not been referenced for the processing of this many | |
1267 | compilation units. Set this to zero to disable caching. Cache | |
1268 | sizes of up to at least twenty will improve startup time for | |
1269 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1270 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1271 | static void |
b4f54984 DE |
1272 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1273 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1274 | { |
3e43a32a | 1275 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1276 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1277 | value); |
1278 | } | |
4390d890 | 1279 | \f |
c906108c SS |
1280 | /* local function prototypes */ |
1281 | ||
918dd910 JK |
1282 | static void dwarf2_find_base_address (struct die_info *die, |
1283 | struct dwarf2_cu *cu); | |
1284 | ||
891813be | 1285 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1286 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1287 | const char *name); | |
0018ea6f | 1288 | |
f1902523 JK |
1289 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1290 | const gdb_byte *info_ptr, | |
3e225074 | 1291 | struct die_info *type_unit_die); |
f1902523 | 1292 | |
976ca316 | 1293 | static void dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile); |
c906108c | 1294 | |
72bf9492 DJ |
1295 | static void scan_partial_symbols (struct partial_die_info *, |
1296 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1297 | int, struct dwarf2_cu *); |
c906108c | 1298 | |
72bf9492 DJ |
1299 | static void add_partial_symbol (struct partial_die_info *, |
1300 | struct dwarf2_cu *); | |
63d06c5c | 1301 | |
72bf9492 DJ |
1302 | static void add_partial_namespace (struct partial_die_info *pdi, |
1303 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1304 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1305 | |
5d7cb8df | 1306 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1307 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1308 | struct dwarf2_cu *cu); |
1309 | ||
72bf9492 DJ |
1310 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1311 | struct dwarf2_cu *cu); | |
91c24f0a | 1312 | |
bc30ff58 JB |
1313 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1314 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1315 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1316 | |
d521ce57 | 1317 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1318 | |
dee91e82 | 1319 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1320 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1321 | |
fb816e8b TV |
1322 | /* A pair of partial_die_info and compilation unit. */ |
1323 | struct cu_partial_die_info | |
1324 | { | |
1325 | /* The compilation unit of the partial_die_info. */ | |
1326 | struct dwarf2_cu *cu; | |
1327 | /* A partial_die_info. */ | |
1328 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1329 | |
1330 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1331 | : cu (cu), | |
1332 | pdi (pdi) | |
405feb71 | 1333 | { /* Nothing. */ } |
122cf0f2 AB |
1334 | |
1335 | private: | |
1336 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1337 | }; |
1338 | ||
122cf0f2 AB |
1339 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1340 | struct dwarf2_cu *); | |
72bf9492 | 1341 | |
d521ce57 TT |
1342 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1343 | struct attribute *, struct attr_abbrev *, | |
7a5f294d | 1344 | const gdb_byte *); |
18a8505e AT |
1345 | |
1346 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 1347 | struct attribute *attr, dwarf_tag tag); |
18a8505e AT |
1348 | |
1349 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1350 | |
976ca316 SM |
1351 | static sect_offset read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
1352 | dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1353 | |
ed2dc618 | 1354 | static const char *read_indirect_string |
976ca316 | 1355 | (dwarf2_per_objfile *per_objfile, bfd *, const gdb_byte *, |
ed2dc618 | 1356 | const struct comp_unit_head *, unsigned int *); |
4bdf3d34 | 1357 | |
ed2dc618 | 1358 | static const char *read_indirect_string_at_offset |
976ca316 | 1359 | (dwarf2_per_objfile *per_objfile, LONGEST str_offset); |
927aa2e7 | 1360 | |
d521ce57 TT |
1361 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1362 | const gdb_byte *, | |
3019eac3 DE |
1363 | unsigned int *); |
1364 | ||
18a8505e AT |
1365 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1366 | ULONGEST str_index); | |
1367 | ||
1368 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1369 | ULONGEST str_index); | |
3019eac3 | 1370 | |
e142c38c | 1371 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1372 | |
e142c38c DJ |
1373 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1374 | struct dwarf2_cu *); | |
c906108c | 1375 | |
7d45c7c3 | 1376 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
dda83cd7 | 1377 | struct dwarf2_cu *cu); |
7d45c7c3 | 1378 | |
a084a2a6 AT |
1379 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1380 | ||
05cf31d1 | 1381 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
dda83cd7 | 1382 | struct dwarf2_cu *cu); |
05cf31d1 | 1383 | |
e142c38c | 1384 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1385 | |
e142c38c | 1386 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1387 | struct dwarf2_cu **); |
63d06c5c | 1388 | |
9c541725 | 1389 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1390 | struct dwarf2_cu *cu); |
debd256d | 1391 | |
f3f5162e | 1392 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1393 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1394 | CORE_ADDR, int decode_mapping); |
c906108c | 1395 | |
804d2729 TT |
1396 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1397 | const char *); | |
c906108c | 1398 | |
a14ed312 | 1399 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1400 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1401 | |
ff39bb5e | 1402 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1403 | struct dwarf2_cu *); |
c906108c | 1404 | |
ff39bb5e | 1405 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1406 | struct type *type, |
1407 | const char *name, | |
1408 | struct obstack *obstack, | |
12df843f | 1409 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1410 | const gdb_byte **bytes, |
98bfdba5 | 1411 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1412 | |
57567375 TT |
1413 | static struct type *read_subrange_index_type (struct die_info *die, |
1414 | struct dwarf2_cu *cu); | |
1415 | ||
e7c27a73 | 1416 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1417 | |
b4ba55a1 JB |
1418 | static int need_gnat_info (struct dwarf2_cu *); |
1419 | ||
3e43a32a MS |
1420 | static struct type *die_descriptive_type (struct die_info *, |
1421 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1422 | |
1423 | static void set_descriptive_type (struct type *, struct die_info *, | |
1424 | struct dwarf2_cu *); | |
1425 | ||
e7c27a73 DJ |
1426 | static struct type *die_containing_type (struct die_info *, |
1427 | struct dwarf2_cu *); | |
c906108c | 1428 | |
ff39bb5e | 1429 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1430 | struct dwarf2_cu *); |
c906108c | 1431 | |
f792889a | 1432 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1433 | |
673bfd45 DE |
1434 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1435 | ||
0d5cff50 | 1436 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1437 | |
6e70227d | 1438 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1439 | const char *suffix, int physname, |
1440 | struct dwarf2_cu *cu); | |
63d06c5c | 1441 | |
e7c27a73 | 1442 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1443 | |
348e048f DE |
1444 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1445 | ||
e7c27a73 | 1446 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1447 | |
e7c27a73 | 1448 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1449 | |
96408a79 SA |
1450 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1451 | ||
71a3c369 TT |
1452 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1453 | ||
41144253 | 1454 | /* Return the .debug_loclists section to use for cu. */ |
1455 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1456 | ||
d0ce17d8 CT |
1457 | /* Return the .debug_rnglists section to use for cu. */ |
1458 | static struct dwarf2_section_info *cu_debug_rnglists_section | |
1459 | (struct dwarf2_cu *cu, dwarf_tag tag); | |
1460 | ||
3a2b436a | 1461 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1462 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1463 | enum pc_bounds_kind |
1464 | { | |
e385593e | 1465 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1466 | PC_BOUNDS_NOT_PRESENT, |
1467 | ||
e385593e JK |
1468 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1469 | were present but they do not form a valid range of PC addresses. */ | |
1470 | PC_BOUNDS_INVALID, | |
1471 | ||
3a2b436a JK |
1472 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1473 | PC_BOUNDS_RANGES, | |
1474 | ||
1475 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1476 | PC_BOUNDS_HIGH_LOW, | |
1477 | }; | |
1478 | ||
1479 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1480 | CORE_ADDR *, CORE_ADDR *, | |
1481 | struct dwarf2_cu *, | |
891813be | 1482 | dwarf2_psymtab *); |
c906108c | 1483 | |
fae299cd DC |
1484 | static void get_scope_pc_bounds (struct die_info *, |
1485 | CORE_ADDR *, CORE_ADDR *, | |
1486 | struct dwarf2_cu *); | |
1487 | ||
801e3a5b | 1488 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
dda83cd7 | 1489 | CORE_ADDR, struct dwarf2_cu *); |
801e3a5b | 1490 | |
a14ed312 | 1491 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1492 | struct dwarf2_cu *); |
c906108c | 1493 | |
a14ed312 | 1494 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1495 | struct type *, struct dwarf2_cu *); |
c906108c | 1496 | |
a14ed312 | 1497 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1498 | struct die_info *, struct type *, |
e7c27a73 | 1499 | struct dwarf2_cu *); |
c906108c | 1500 | |
a14ed312 | 1501 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1502 | struct type *, |
1503 | struct dwarf2_cu *); | |
c906108c | 1504 | |
134d01f1 | 1505 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1506 | |
e7c27a73 | 1507 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1508 | |
e7c27a73 | 1509 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1510 | |
5d7cb8df JK |
1511 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1512 | ||
804d2729 | 1513 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1514 | |
27aa8d6a SW |
1515 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1516 | ||
74921315 KS |
1517 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1518 | ||
f55ee35c JK |
1519 | static struct type *read_module_type (struct die_info *die, |
1520 | struct dwarf2_cu *cu); | |
1521 | ||
38d518c9 | 1522 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1523 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1524 | |
134d01f1 | 1525 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1526 | |
7d79de9a TT |
1527 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1528 | bool * = nullptr); | |
c906108c | 1529 | |
6e70227d | 1530 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1531 | struct dwarf2_cu *); |
1532 | ||
bf6af496 | 1533 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1534 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1535 | struct die_info *); |
639d11d3 | 1536 | |
dee91e82 | 1537 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1538 | const gdb_byte *info_ptr, |
1539 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1540 | struct die_info *parent); |
1541 | ||
d521ce57 TT |
1542 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1543 | struct die_info **, const gdb_byte *, | |
3e225074 | 1544 | int); |
3019eac3 | 1545 | |
d521ce57 | 1546 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1547 | struct die_info **, const gdb_byte *); |
93311388 | 1548 | |
e7c27a73 | 1549 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1550 | |
15d034d0 | 1551 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1552 | struct objfile *); |
71c25dea | 1553 | |
15d034d0 | 1554 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1555 | |
15d034d0 | 1556 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1557 | struct die_info *die, |
1558 | struct dwarf2_cu *cu); | |
1559 | ||
ca69b9e6 DE |
1560 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1561 | struct dwarf2_cu *cu); | |
1562 | ||
e142c38c | 1563 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1564 | struct dwarf2_cu **); |
9219021c | 1565 | |
d97bc12b DE |
1566 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1567 | ||
1568 | static void dump_die_for_error (struct die_info *); | |
1569 | ||
1570 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1571 | struct die_info *); | |
c906108c | 1572 | |
d97bc12b | 1573 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1574 | |
51545339 | 1575 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1576 | struct dwarf2_cu *); |
c906108c | 1577 | |
348e048f | 1578 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1579 | const struct attribute *, |
348e048f DE |
1580 | struct dwarf2_cu **); |
1581 | ||
10b3939b | 1582 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1583 | const struct attribute *, |
f2f0e013 | 1584 | struct dwarf2_cu **); |
c906108c | 1585 | |
348e048f | 1586 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1587 | const struct attribute *, |
348e048f DE |
1588 | struct dwarf2_cu **); |
1589 | ||
ac9ec31b DE |
1590 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1591 | struct dwarf2_cu *); | |
1592 | ||
1593 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1594 | const struct attribute *, |
ac9ec31b DE |
1595 | struct dwarf2_cu *); |
1596 | ||
ab432490 SM |
1597 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1598 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1599 | |
ab432490 SM |
1600 | static void read_signatured_type (signatured_type *sig_type, |
1601 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1602 | |
63e43d3a PMR |
1603 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1604 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1605 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1606 | |
c906108c SS |
1607 | /* memory allocation interface */ |
1608 | ||
7b5a2f43 | 1609 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1610 | |
b60c80d6 | 1611 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1612 | |
43f3e411 | 1613 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1614 | |
8cf6f0b1 TT |
1615 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1616 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1617 | const struct attribute *attr); |
8cf6f0b1 | 1618 | |
ff39bb5e | 1619 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1620 | struct symbol *sym, |
f1e6e072 TT |
1621 | struct dwarf2_cu *cu, |
1622 | int is_block); | |
4c2df51b | 1623 | |
d521ce57 TT |
1624 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1625 | const gdb_byte *info_ptr, | |
1626 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1627 | |
72bf9492 DJ |
1628 | static hashval_t partial_die_hash (const void *item); |
1629 | ||
1630 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1631 | ||
ae038cb0 | 1632 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 | 1633 | (sect_offset sect_off, unsigned int offset_in_dwz, |
976ca316 | 1634 | dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1635 | |
9816fde3 | 1636 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1637 | struct die_info *comp_unit_die, |
1638 | enum language pretend_language); | |
93311388 | 1639 | |
f792889a | 1640 | static struct type *set_die_type (struct die_info *, struct type *, |
57567375 | 1641 | struct dwarf2_cu *, bool = false); |
1c379e20 | 1642 | |
976ca316 | 1643 | static void create_all_comp_units (dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1644 | |
976ca316 | 1645 | static int create_all_type_units (dwarf2_per_objfile *per_objfile); |
1fd400ff | 1646 | |
ab432490 SM |
1647 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1648 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 1649 | dwarf2_cu *existing_cu, |
ab432490 SM |
1650 | bool skip_partial, |
1651 | enum language pretend_language); | |
10b3939b | 1652 | |
8fc0b21d | 1653 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1654 | enum language pretend_language); |
10b3939b | 1655 | |
8fc0b21d | 1656 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1657 | enum language pretend_language); |
f4dc4d17 | 1658 | |
10b3939b DJ |
1659 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1660 | struct dwarf2_per_cu_data *); | |
1661 | ||
ae038cb0 DJ |
1662 | static void dwarf2_mark (struct dwarf2_cu *); |
1663 | ||
b64f50a1 | 1664 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1665 | dwarf2_per_cu_data *per_cu, |
1666 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1667 | |
f792889a | 1668 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1669 | |
120ce1b5 SM |
1670 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1671 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1672 | enum language pretend_language); |
1673 | ||
976ca316 | 1674 | static void process_queue (dwarf2_per_objfile *per_objfile); |
9291a0cd | 1675 | |
b303c6f6 AB |
1676 | /* Class, the destructor of which frees all allocated queue entries. This |
1677 | will only have work to do if an error was thrown while processing the | |
1678 | dwarf. If no error was thrown then the queue entries should have all | |
1679 | been processed, and freed, as we went along. */ | |
1680 | ||
1681 | class dwarf2_queue_guard | |
1682 | { | |
1683 | public: | |
39856def TT |
1684 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1685 | : m_per_objfile (per_objfile) | |
1686 | { | |
08ac5771 SM |
1687 | gdb_assert (!m_per_objfile->per_bfd->queue.has_value ()); |
1688 | ||
1689 | m_per_objfile->per_bfd->queue.emplace (); | |
39856def | 1690 | } |
b303c6f6 AB |
1691 | |
1692 | /* Free any entries remaining on the queue. There should only be | |
1693 | entries left if we hit an error while processing the dwarf. */ | |
1694 | ~dwarf2_queue_guard () | |
1695 | { | |
08ac5771 SM |
1696 | gdb_assert (m_per_objfile->per_bfd->queue.has_value ()); |
1697 | ||
1698 | m_per_objfile->per_bfd->queue.reset (); | |
39856def | 1699 | } |
b303c6f6 | 1700 | |
39856def | 1701 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1702 | |
39856def TT |
1703 | private: |
1704 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1705 | }; |
1706 | ||
39856def TT |
1707 | dwarf2_queue_item::~dwarf2_queue_item () |
1708 | { | |
1709 | /* Anything still marked queued is likely to be in an | |
1710 | inconsistent state, so discard it. */ | |
1711 | if (per_cu->queued) | |
1712 | { | |
7188ed02 | 1713 | per_objfile->remove_cu (per_cu); |
39856def TT |
1714 | per_cu->queued = 0; |
1715 | } | |
1716 | } | |
1717 | ||
d721ba37 PA |
1718 | /* The return type of find_file_and_directory. Note, the enclosed |
1719 | string pointers are only valid while this object is valid. */ | |
1720 | ||
1721 | struct file_and_directory | |
1722 | { | |
1723 | /* The filename. This is never NULL. */ | |
1724 | const char *name; | |
1725 | ||
1726 | /* The compilation directory. NULL if not known. If we needed to | |
1727 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1728 | points directly to the DW_AT_comp_dir string attribute owned by | |
1729 | the obstack that owns the DIE. */ | |
1730 | const char *comp_dir; | |
1731 | ||
1732 | /* If we needed to build a new string for comp_dir, this is what | |
1733 | owns the storage. */ | |
1734 | std::string comp_dir_storage; | |
1735 | }; | |
1736 | ||
1737 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1738 | struct dwarf2_cu *cu); | |
9291a0cd | 1739 | |
298e9637 | 1740 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1741 | |
298e9637 | 1742 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1743 | |
57d63ce2 | 1744 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
976ca316 SM |
1745 | (dwarf2_per_objfile *per_objfile, struct dwp_file *dwp_file, |
1746 | const char *comp_dir, ULONGEST signature, int is_debug_types); | |
a2ce51a0 | 1747 | |
976ca316 | 1748 | static struct dwp_file *get_dwp_file (dwarf2_per_objfile *per_objfile); |
a2ce51a0 | 1749 | |
3019eac3 | 1750 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1751 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1752 | ULONGEST signature); | |
3019eac3 DE |
1753 | |
1754 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1755 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1756 | |
1b555f17 | 1757 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1758 | |
263db9a1 TT |
1759 | /* A unique pointer to a dwo_file. */ |
1760 | ||
51ac9db5 | 1761 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1762 | |
976ca316 | 1763 | static void process_cu_includes (dwarf2_per_objfile *per_objfile); |
95554aad | 1764 | |
1b80a9fa | 1765 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1766 | |
1767 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1768 | \f |
1769 | /* Various complaints about symbol reading that don't abort the process. */ | |
1770 | ||
4390d890 DE |
1771 | static void |
1772 | dwarf2_debug_line_missing_file_complaint (void) | |
1773 | { | |
b98664d3 | 1774 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1775 | } |
1776 | ||
1777 | static void | |
1778 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1779 | { | |
b98664d3 | 1780 | complaint (_(".debug_line section has line " |
4390d890 DE |
1781 | "program sequence without an end")); |
1782 | } | |
1783 | ||
1784 | static void | |
1785 | dwarf2_complex_location_expr_complaint (void) | |
1786 | { | |
b98664d3 | 1787 | complaint (_("location expression too complex")); |
4390d890 DE |
1788 | } |
1789 | ||
1790 | static void | |
1791 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1792 | int arg3) | |
1793 | { | |
b98664d3 | 1794 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1795 | arg1, arg2, arg3); |
1796 | } | |
1797 | ||
4390d890 DE |
1798 | static void |
1799 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1800 | { | |
b98664d3 | 1801 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1802 | arg1, arg2); |
1803 | } | |
527f3840 JK |
1804 | |
1805 | /* Hash function for line_header_hash. */ | |
1806 | ||
1807 | static hashval_t | |
1808 | line_header_hash (const struct line_header *ofs) | |
1809 | { | |
9c541725 | 1810 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1811 | } |
1812 | ||
1813 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1814 | ||
1815 | static hashval_t | |
1816 | line_header_hash_voidp (const void *item) | |
1817 | { | |
9a3c8263 | 1818 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1819 | |
1820 | return line_header_hash (ofs); | |
1821 | } | |
1822 | ||
1823 | /* Equality function for line_header_hash. */ | |
1824 | ||
1825 | static int | |
1826 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1827 | { | |
9a3c8263 SM |
1828 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1829 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1830 | |
9c541725 | 1831 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1832 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1833 | } | |
1834 | ||
4390d890 | 1835 | \f |
9291a0cd | 1836 | |
330cdd98 PA |
1837 | /* See declaration. */ |
1838 | ||
5989a64e SM |
1839 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1840 | bool can_copy_) | |
c3699833 SM |
1841 | : obfd (obfd), |
1842 | can_copy (can_copy_) | |
330cdd98 PA |
1843 | { |
1844 | if (names == NULL) | |
1845 | names = &dwarf2_elf_names; | |
1846 | ||
330cdd98 PA |
1847 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1848 | locate_sections (obfd, sec, *names); | |
1849 | } | |
1850 | ||
5989a64e | 1851 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1852 | { |
b76e467d | 1853 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1854 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1855 | |
b2bdb8cf | 1856 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1857 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1858 | |
5989a64e | 1859 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1860 | } |
1861 | ||
7188ed02 | 1862 | /* See read.h. */ |
330cdd98 PA |
1863 | |
1864 | void | |
7188ed02 | 1865 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1866 | { |
08ac5771 SM |
1867 | gdb_assert (!this->per_bfd->queue.has_value ()); |
1868 | ||
7188ed02 SM |
1869 | for (auto pair : m_dwarf2_cus) |
1870 | delete pair.second; | |
330cdd98 | 1871 | |
7188ed02 | 1872 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1873 | } |
1874 | ||
11ed8cad TT |
1875 | /* A helper class that calls free_cached_comp_units on |
1876 | destruction. */ | |
1877 | ||
1878 | class free_cached_comp_units | |
1879 | { | |
1880 | public: | |
1881 | ||
1882 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1883 | : m_per_objfile (per_objfile) | |
1884 | { | |
1885 | } | |
1886 | ||
1887 | ~free_cached_comp_units () | |
1888 | { | |
7188ed02 | 1889 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1890 | } |
1891 | ||
1892 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1893 | ||
1894 | private: | |
1895 | ||
1896 | dwarf2_per_objfile *m_per_objfile; | |
1897 | }; | |
1898 | ||
af758d11 SM |
1899 | /* See read.h. */ |
1900 | ||
1901 | bool | |
1902 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1903 | { | |
1904 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1905 | ||
1906 | return this->m_symtabs[per_cu->index] != nullptr; | |
1907 | } | |
1908 | ||
1909 | /* See read.h. */ | |
1910 | ||
1911 | compunit_symtab * | |
1912 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1913 | { | |
1914 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1915 | ||
1916 | return this->m_symtabs[per_cu->index]; | |
1917 | } | |
1918 | ||
1919 | /* See read.h. */ | |
1920 | ||
1921 | void | |
1922 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1923 | compunit_symtab *symtab) | |
1924 | { | |
1925 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1926 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1927 | ||
1928 | this->m_symtabs[per_cu->index] = symtab; | |
1929 | } | |
1930 | ||
c906108c | 1931 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1932 | information and return true if we have enough to do something. |
1933 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1934 | ELF names are used. CAN_COPY is true for formats where symbol |
1935 | interposition is possible and so symbol values must follow copy | |
1936 | relocation rules. */ | |
c906108c SS |
1937 | |
1938 | int | |
251d32d9 | 1939 | dwarf2_has_info (struct objfile *objfile, |
dda83cd7 | 1940 | const struct dwarf2_debug_sections *names, |
4b610737 | 1941 | bool can_copy) |
c906108c | 1942 | { |
97cbe998 SDJ |
1943 | if (objfile->flags & OBJF_READNEVER) |
1944 | return 0; | |
1945 | ||
976ca316 | 1946 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 1947 | |
976ca316 | 1948 | if (per_objfile == NULL) |
5989a64e | 1949 | { |
17ee85fc TT |
1950 | dwarf2_per_bfd *per_bfd; |
1951 | ||
1952 | /* We can share a "dwarf2_per_bfd" with other objfiles if the BFD | |
dda83cd7 | 1953 | doesn't require relocations and if there aren't partial symbols |
17ee85fc TT |
1954 | from some other reader. */ |
1955 | if (!objfile_has_partial_symbols (objfile) | |
1956 | && !gdb_bfd_requires_relocations (objfile->obfd)) | |
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 | ||
251d32d9 TG |
1984 | /* When loading sections, we look either for uncompressed section or for |
1985 | compressed section names. */ | |
233a11ab CS |
1986 | |
1987 | static int | |
251d32d9 | 1988 | section_is_p (const char *section_name, |
dda83cd7 | 1989 | const struct dwarf2_section_names *names) |
233a11ab | 1990 | { |
251d32d9 TG |
1991 | if (names->normal != NULL |
1992 | && strcmp (section_name, names->normal) == 0) | |
1993 | return 1; | |
1994 | if (names->compressed != NULL | |
1995 | && strcmp (section_name, names->compressed) == 0) | |
1996 | return 1; | |
1997 | return 0; | |
233a11ab CS |
1998 | } |
1999 | ||
330cdd98 | 2000 | /* See declaration. */ |
c906108c | 2001 | |
330cdd98 | 2002 | void |
5989a64e SM |
2003 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
2004 | const dwarf2_debug_sections &names) | |
c906108c | 2005 | { |
fd361982 | 2006 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 2007 | |
dc7650b8 JK |
2008 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2009 | { | |
2010 | } | |
950b7495 KS |
2011 | else if (elf_section_data (sectp)->this_hdr.sh_size |
2012 | > bfd_get_file_size (abfd)) | |
2013 | { | |
2014 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
2015 | warning (_("Discarding section %s which has a section size (%s" | |
2016 | ") larger than the file size [in module %s]"), | |
2017 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
2018 | bfd_get_filename (abfd)); | |
2019 | } | |
330cdd98 | 2020 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2021 | { |
330cdd98 | 2022 | this->info.s.section = sectp; |
fd361982 | 2023 | this->info.size = bfd_section_size (sectp); |
c906108c | 2024 | } |
330cdd98 | 2025 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2026 | { |
330cdd98 | 2027 | this->abbrev.s.section = sectp; |
fd361982 | 2028 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2029 | } |
330cdd98 | 2030 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2031 | { |
330cdd98 | 2032 | this->line.s.section = sectp; |
fd361982 | 2033 | this->line.size = bfd_section_size (sectp); |
c906108c | 2034 | } |
330cdd98 | 2035 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2036 | { |
330cdd98 | 2037 | this->loc.s.section = sectp; |
fd361982 | 2038 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2039 | } |
330cdd98 | 2040 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2041 | { |
330cdd98 | 2042 | this->loclists.s.section = sectp; |
fd361982 | 2043 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2044 | } |
330cdd98 | 2045 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2046 | { |
330cdd98 | 2047 | this->macinfo.s.section = sectp; |
fd361982 | 2048 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2049 | } |
330cdd98 | 2050 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2051 | { |
330cdd98 | 2052 | this->macro.s.section = sectp; |
fd361982 | 2053 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2054 | } |
330cdd98 | 2055 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2056 | { |
330cdd98 | 2057 | this->str.s.section = sectp; |
fd361982 | 2058 | this->str.size = bfd_section_size (sectp); |
c906108c | 2059 | } |
18a8505e AT |
2060 | else if (section_is_p (sectp->name, &names.str_offsets)) |
2061 | { | |
2062 | this->str_offsets.s.section = sectp; | |
2063 | this->str_offsets.size = bfd_section_size (sectp); | |
2064 | } | |
330cdd98 | 2065 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2066 | { |
330cdd98 | 2067 | this->line_str.s.section = sectp; |
fd361982 | 2068 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2069 | } |
330cdd98 | 2070 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2071 | { |
330cdd98 | 2072 | this->addr.s.section = sectp; |
fd361982 | 2073 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2074 | } |
330cdd98 | 2075 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2076 | { |
330cdd98 | 2077 | this->frame.s.section = sectp; |
fd361982 | 2078 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2079 | } |
330cdd98 | 2080 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2081 | { |
330cdd98 | 2082 | this->eh_frame.s.section = sectp; |
fd361982 | 2083 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2084 | } |
330cdd98 | 2085 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2086 | { |
330cdd98 | 2087 | this->ranges.s.section = sectp; |
fd361982 | 2088 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2089 | } |
330cdd98 | 2090 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2091 | { |
330cdd98 | 2092 | this->rnglists.s.section = sectp; |
fd361982 | 2093 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2094 | } |
330cdd98 | 2095 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2096 | { |
8b70b953 TT |
2097 | struct dwarf2_section_info type_section; |
2098 | ||
2099 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2100 | type_section.s.section = sectp; |
fd361982 | 2101 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2102 | |
fd5866f6 | 2103 | this->types.push_back (type_section); |
348e048f | 2104 | } |
330cdd98 | 2105 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2106 | { |
330cdd98 | 2107 | this->gdb_index.s.section = sectp; |
fd361982 | 2108 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2109 | } |
927aa2e7 JK |
2110 | else if (section_is_p (sectp->name, &names.debug_names)) |
2111 | { | |
2112 | this->debug_names.s.section = sectp; | |
fd361982 | 2113 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2114 | } |
2115 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2116 | { | |
2117 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2118 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2119 | } |
dce234bc | 2120 | |
fd361982 AM |
2121 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2122 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2123 | this->has_section_at_zero = true; |
c906108c SS |
2124 | } |
2125 | ||
dce234bc | 2126 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2127 | SECTION_NAME. */ |
af34e669 | 2128 | |
dce234bc | 2129 | void |
3017a003 | 2130 | dwarf2_get_section_info (struct objfile *objfile, |
dda83cd7 SM |
2131 | enum dwarf2_section_enum sect, |
2132 | asection **sectp, const gdb_byte **bufp, | |
2133 | bfd_size_type *sizep) | |
dce234bc | 2134 | { |
976ca316 | 2135 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
dce234bc | 2136 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2137 | |
2138 | /* We may see an objfile without any DWARF, in which case we just | |
2139 | return nothing. */ | |
976ca316 | 2140 | if (per_objfile == NULL) |
a3b2a86b TT |
2141 | { |
2142 | *sectp = NULL; | |
2143 | *bufp = NULL; | |
2144 | *sizep = 0; | |
2145 | return; | |
2146 | } | |
3017a003 TG |
2147 | switch (sect) |
2148 | { | |
2149 | case DWARF2_DEBUG_FRAME: | |
976ca316 | 2150 | info = &per_objfile->per_bfd->frame; |
3017a003 TG |
2151 | break; |
2152 | case DWARF2_EH_FRAME: | |
976ca316 | 2153 | info = &per_objfile->per_bfd->eh_frame; |
3017a003 TG |
2154 | break; |
2155 | default: | |
2156 | gdb_assert_not_reached ("unexpected section"); | |
2157 | } | |
dce234bc | 2158 | |
96b79293 | 2159 | info->read (objfile); |
dce234bc | 2160 | |
96b79293 | 2161 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2162 | *bufp = info->buffer; |
2163 | *sizep = info->size; | |
2164 | } | |
2165 | ||
36586728 TT |
2166 | /* A helper function to find the sections for a .dwz file. */ |
2167 | ||
2168 | static void | |
5bb6e9dd | 2169 | locate_dwz_sections (bfd *abfd, asection *sectp, dwz_file *dwz_file) |
36586728 | 2170 | { |
36586728 TT |
2171 | /* Note that we only support the standard ELF names, because .dwz |
2172 | is ELF-only (at the time of writing). */ | |
2173 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2174 | { | |
049412e3 | 2175 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2176 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2177 | } |
2178 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2179 | { | |
049412e3 | 2180 | dwz_file->info.s.section = sectp; |
fd361982 | 2181 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2182 | } |
2183 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2184 | { | |
049412e3 | 2185 | dwz_file->str.s.section = sectp; |
fd361982 | 2186 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2187 | } |
2188 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2189 | { | |
049412e3 | 2190 | dwz_file->line.s.section = sectp; |
fd361982 | 2191 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2192 | } |
2193 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2194 | { | |
049412e3 | 2195 | dwz_file->macro.s.section = sectp; |
fd361982 | 2196 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2197 | } |
2ec9a5e0 TT |
2198 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2199 | { | |
049412e3 | 2200 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2201 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2202 | } |
927aa2e7 JK |
2203 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2204 | { | |
2205 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2206 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2207 | } |
36586728 TT |
2208 | } |
2209 | ||
2bf3b79d SDJ |
2210 | /* Attempt to find a .dwz file (whose full path is represented by |
2211 | FILENAME) in all of the specified debug file directories provided. | |
2212 | ||
2213 | Return the equivalent gdb_bfd_ref_ptr of the .dwz file found, or | |
2214 | nullptr if it could not find anything. */ | |
2215 | ||
2216 | static gdb_bfd_ref_ptr | |
2217 | dwz_search_other_debugdirs (std::string &filename, bfd_byte *buildid, | |
2218 | size_t buildid_len) | |
2219 | { | |
2220 | /* Let's assume that the path represented by FILENAME has the | |
2221 | "/.dwz/" subpath in it. This is what (most) GNU/Linux | |
2222 | distributions do, anyway. */ | |
2223 | size_t dwz_pos = filename.find ("/.dwz/"); | |
2224 | ||
2225 | if (dwz_pos == std::string::npos) | |
2226 | return nullptr; | |
2227 | ||
2228 | /* This is an obvious assertion, but it's here more to educate | |
2229 | future readers of this code that FILENAME at DWZ_POS *must* | |
2230 | contain a directory separator. */ | |
2231 | gdb_assert (IS_DIR_SEPARATOR (filename[dwz_pos])); | |
2232 | ||
2233 | gdb_bfd_ref_ptr dwz_bfd; | |
2234 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec | |
2235 | = dirnames_to_char_ptr_vec (debug_file_directory); | |
2236 | ||
2237 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) | |
2238 | { | |
2239 | /* The idea is to iterate over the | |
2240 | debug file directories provided by the user and | |
2241 | replace the hard-coded path in the "filename" by each | |
2242 | debug-file-directory. | |
2243 | ||
2244 | For example, suppose that filename is: | |
2245 | ||
2246 | /usr/lib/debug/.dwz/foo.dwz | |
2247 | ||
2248 | And suppose that we have "$HOME/bar" as the | |
2249 | debug-file-directory. We would then adjust filename | |
2250 | to look like: | |
2251 | ||
2252 | $HOME/bar/.dwz/foo.dwz | |
2253 | ||
2254 | which would hopefully allow us to find the alt debug | |
2255 | file. */ | |
2256 | std::string ddir = debugdir.get (); | |
2257 | ||
2258 | if (ddir.empty ()) | |
2259 | continue; | |
2260 | ||
2261 | /* Make sure the current debug-file-directory ends with a | |
2262 | directory separator. This is needed because, if FILENAME | |
2263 | contains something like "/usr/lib/abcde/.dwz/foo.dwz" and | |
2264 | DDIR is "/usr/lib/abc", then could wrongfully skip it | |
2265 | below. */ | |
2266 | if (!IS_DIR_SEPARATOR (ddir.back ())) | |
2267 | ddir += SLASH_STRING; | |
2268 | ||
2269 | /* Check whether the beginning of FILENAME is DDIR. If it is, | |
2270 | then we are dealing with a file which we already attempted to | |
2271 | open before, so we just skip it and continue processing the | |
2272 | remaining debug file directories. */ | |
2273 | if (filename.size () > ddir.size () | |
2274 | && filename.compare (0, ddir.size (), ddir) == 0) | |
2275 | continue; | |
2276 | ||
2277 | /* Replace FILENAME's default debug-file-directory with | |
2278 | DDIR. */ | |
2279 | std::string new_filename = ddir + &filename[dwz_pos + 1]; | |
2280 | ||
2281 | dwz_bfd = gdb_bfd_open (new_filename.c_str (), gnutarget); | |
2282 | ||
2283 | if (dwz_bfd == nullptr) | |
2284 | continue; | |
2285 | ||
2286 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2287 | { | |
2288 | dwz_bfd.reset (nullptr); | |
2289 | continue; | |
2290 | } | |
2291 | ||
2292 | /* Found it. */ | |
2293 | break; | |
2294 | } | |
2295 | ||
2296 | return dwz_bfd; | |
2297 | } | |
2298 | ||
c4973306 | 2299 | /* See dwarf2read.h. */ |
36586728 | 2300 | |
c4973306 | 2301 | struct dwz_file * |
c3699833 | 2302 | dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd) |
36586728 | 2303 | { |
acd13123 | 2304 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2305 | size_t buildid_len; |
2306 | bfd_byte *buildid; | |
36586728 | 2307 | |
c3699833 SM |
2308 | if (per_bfd->dwz_file != NULL) |
2309 | return per_bfd->dwz_file.get (); | |
36586728 | 2310 | |
4db1a1dc | 2311 | bfd_set_error (bfd_error_no_error); |
791afaa2 | 2312 | gdb::unique_xmalloc_ptr<char> data |
c3699833 | 2313 | (bfd_get_alt_debug_link_info (per_bfd->obfd, |
791afaa2 | 2314 | &buildid_len_arg, &buildid)); |
4db1a1dc TT |
2315 | if (data == NULL) |
2316 | { | |
2317 | if (bfd_get_error () == bfd_error_no_error) | |
2318 | return NULL; | |
2319 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2320 | bfd_errmsg (bfd_get_error ())); | |
2321 | } | |
791afaa2 TT |
2322 | |
2323 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2324 | |
acd13123 TT |
2325 | buildid_len = (size_t) buildid_len_arg; |
2326 | ||
2bf3b79d | 2327 | std::string filename = data.get (); |
d721ba37 | 2328 | |
2bf3b79d | 2329 | if (!IS_ABSOLUTE_PATH (filename.c_str ())) |
36586728 | 2330 | { |
14278e1f | 2331 | gdb::unique_xmalloc_ptr<char> abs |
c3699833 | 2332 | = gdb_realpath (bfd_get_filename (per_bfd->obfd)); |
36586728 | 2333 | |
2bf3b79d | 2334 | filename = ldirname (abs.get ()) + SLASH_STRING + filename; |
36586728 TT |
2335 | } |
2336 | ||
dc294be5 TT |
2337 | /* First try the file name given in the section. If that doesn't |
2338 | work, try to use the build-id instead. */ | |
2bf3b79d | 2339 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename.c_str (), gnutarget)); |
dc294be5 | 2340 | if (dwz_bfd != NULL) |
36586728 | 2341 | { |
192b62ce | 2342 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2343 | dwz_bfd.reset (nullptr); |
36586728 TT |
2344 | } |
2345 | ||
dc294be5 TT |
2346 | if (dwz_bfd == NULL) |
2347 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2348 | ||
2bf3b79d SDJ |
2349 | if (dwz_bfd == nullptr) |
2350 | { | |
2351 | /* If the user has provided us with different | |
2352 | debug file directories, we can try them in order. */ | |
2353 | dwz_bfd = dwz_search_other_debugdirs (filename, buildid, buildid_len); | |
2354 | } | |
2355 | ||
0d79cdc4 AM |
2356 | if (dwz_bfd == nullptr) |
2357 | { | |
2358 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
c3699833 | 2359 | const char *origname = bfd_get_filename (per_bfd->obfd); |
0d79cdc4 AM |
2360 | |
2361 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2362 | buildid_len, | |
2363 | origname, | |
2364 | &alt_filename)); | |
2365 | ||
2366 | if (fd.get () >= 0) | |
2367 | { | |
2368 | /* File successfully retrieved from server. */ | |
ad80db5b | 2369 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget); |
0d79cdc4 AM |
2370 | |
2371 | if (dwz_bfd == nullptr) | |
2372 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2373 | alt_filename.get ()); | |
2374 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2375 | dwz_bfd.reset (nullptr); | |
2376 | } | |
2377 | } | |
2378 | ||
dc294be5 TT |
2379 | if (dwz_bfd == NULL) |
2380 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
c3699833 | 2381 | bfd_get_filename (per_bfd->obfd)); |
dc294be5 | 2382 | |
7ff8cb8c TT |
2383 | std::unique_ptr<struct dwz_file> result |
2384 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2385 | |
5bb6e9dd TT |
2386 | for (asection *sec : gdb_bfd_sections (result->dwz_bfd)) |
2387 | locate_dwz_sections (result->dwz_bfd.get (), sec, result.get ()); | |
36586728 | 2388 | |
c3699833 SM |
2389 | gdb_bfd_record_inclusion (per_bfd->obfd, result->dwz_bfd.get ()); |
2390 | per_bfd->dwz_file = std::move (result); | |
2391 | return per_bfd->dwz_file.get (); | |
36586728 | 2392 | } |
9291a0cd | 2393 | \f |
7b9f3c50 DE |
2394 | /* DWARF quick_symbols_functions support. */ |
2395 | ||
2396 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2397 | unique line tables, so we maintain a separate table of all .debug_line | |
2398 | derived entries to support the sharing. | |
2399 | All the quick functions need is the list of file names. We discard the | |
2400 | line_header when we're done and don't need to record it here. */ | |
2401 | struct quick_file_names | |
2402 | { | |
094b34ac DE |
2403 | /* The data used to construct the hash key. */ |
2404 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2405 | |
2406 | /* The number of entries in file_names, real_names. */ | |
2407 | unsigned int num_file_names; | |
2408 | ||
2409 | /* The file names from the line table, after being run through | |
2410 | file_full_name. */ | |
2411 | const char **file_names; | |
2412 | ||
2413 | /* The file names from the line table after being run through | |
2414 | gdb_realpath. These are computed lazily. */ | |
2415 | const char **real_names; | |
2416 | }; | |
2417 | ||
2418 | /* When using the index (and thus not using psymtabs), each CU has an | |
2419 | object of this type. This is used to hold information needed by | |
2420 | the various "quick" methods. */ | |
2421 | struct dwarf2_per_cu_quick_data | |
2422 | { | |
2423 | /* The file table. This can be NULL if there was no file table | |
2424 | or it's currently not read in. | |
5989a64e | 2425 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2426 | struct quick_file_names *file_names; |
2427 | ||
7b9f3c50 DE |
2428 | /* A temporary mark bit used when iterating over all CUs in |
2429 | expand_symtabs_matching. */ | |
2430 | unsigned int mark : 1; | |
2431 | ||
2432 | /* True if we've tried to read the file table and found there isn't one. | |
2433 | There will be no point in trying to read it again next time. */ | |
2434 | unsigned int no_file_data : 1; | |
2435 | }; | |
2436 | ||
094b34ac DE |
2437 | /* Utility hash function for a stmt_list_hash. */ |
2438 | ||
2439 | static hashval_t | |
2440 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2441 | { | |
2442 | hashval_t v = 0; | |
2443 | ||
2444 | if (stmt_list_hash->dwo_unit != NULL) | |
2445 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2446 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2447 | return v; |
2448 | } | |
2449 | ||
2450 | /* Utility equality function for a stmt_list_hash. */ | |
2451 | ||
2452 | static int | |
2453 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2454 | const struct stmt_list_hash *rhs) | |
2455 | { | |
2456 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2457 | return 0; | |
2458 | if (lhs->dwo_unit != NULL | |
2459 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2460 | return 0; | |
2461 | ||
9c541725 | 2462 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2463 | } |
2464 | ||
7b9f3c50 DE |
2465 | /* Hash function for a quick_file_names. */ |
2466 | ||
2467 | static hashval_t | |
2468 | hash_file_name_entry (const void *e) | |
2469 | { | |
9a3c8263 SM |
2470 | const struct quick_file_names *file_data |
2471 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2472 | |
094b34ac | 2473 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2474 | } |
2475 | ||
2476 | /* Equality function for a quick_file_names. */ | |
2477 | ||
2478 | static int | |
2479 | eq_file_name_entry (const void *a, const void *b) | |
2480 | { | |
9a3c8263 SM |
2481 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2482 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2483 | |
094b34ac | 2484 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2485 | } |
2486 | ||
2487 | /* Delete function for a quick_file_names. */ | |
2488 | ||
2489 | static void | |
2490 | delete_file_name_entry (void *e) | |
2491 | { | |
9a3c8263 | 2492 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2493 | int i; |
2494 | ||
2495 | for (i = 0; i < file_data->num_file_names; ++i) | |
2496 | { | |
2497 | xfree ((void*) file_data->file_names[i]); | |
2498 | if (file_data->real_names) | |
2499 | xfree ((void*) file_data->real_names[i]); | |
2500 | } | |
2501 | ||
45940949 TT |
2502 | /* The space for the struct itself lives on the obstack, so we don't |
2503 | free it here. */ | |
7b9f3c50 DE |
2504 | } |
2505 | ||
2506 | /* Create a quick_file_names hash table. */ | |
2507 | ||
5895093f | 2508 | static htab_up |
7b9f3c50 DE |
2509 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2510 | { | |
5895093f TT |
2511 | return htab_up (htab_create_alloc (nr_initial_entries, |
2512 | hash_file_name_entry, eq_file_name_entry, | |
2513 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2514 | } |
9291a0cd | 2515 | |
ab432490 SM |
2516 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2517 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2518 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2519 | |
1b555f17 | 2520 | static dwarf2_cu * |
ab432490 SM |
2521 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2522 | bool skip_partial) | |
918dd910 | 2523 | { |
3019eac3 | 2524 | if (per_cu->is_debug_types) |
ab432490 | 2525 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2526 | else |
4a636814 SM |
2527 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
2528 | skip_partial, language_minimal); | |
918dd910 | 2529 | |
7188ed02 SM |
2530 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2531 | if (cu == nullptr) | |
1b555f17 | 2532 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2533 | |
7188ed02 | 2534 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2535 | |
7188ed02 | 2536 | return cu; |
918dd910 JK |
2537 | } |
2538 | ||
1350c3b4 | 2539 | /* Read in the symbols for PER_CU in the context of PER_OBJFILE. */ |
2fdf6df6 | 2540 | |
9291a0cd | 2541 | static void |
97a1449a | 2542 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2543 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2544 | { |
f4dc4d17 DE |
2545 | /* Skip type_unit_groups, reading the type units they contain |
2546 | is handled elsewhere. */ | |
197400e8 | 2547 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2548 | return; |
2549 | ||
08ac5771 SM |
2550 | { |
2551 | /* The destructor of dwarf2_queue_guard frees any entries left on | |
2552 | the queue. After this point we're guaranteed to leave this function | |
2553 | with the dwarf queue empty. */ | |
2554 | dwarf2_queue_guard q_guard (per_objfile); | |
89e63ee4 | 2555 | |
08ac5771 SM |
2556 | if (!per_objfile->symtab_set_p (per_cu)) |
2557 | { | |
2558 | queue_comp_unit (per_cu, per_objfile, language_minimal); | |
2559 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
2560 | ||
2561 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2562 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2563 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2564 | if (!per_cu->is_debug_types | |
2565 | && cu != NULL | |
2566 | && cu->dwo_unit != NULL | |
2567 | && per_objfile->per_bfd->index_table != NULL | |
2568 | && per_objfile->per_bfd->index_table->version <= 7 | |
2569 | /* DWP files aren't supported yet. */ | |
2570 | && get_dwp_file (per_objfile) == NULL) | |
2571 | queue_and_load_all_dwo_tus (cu); | |
2572 | } | |
9291a0cd | 2573 | |
08ac5771 SM |
2574 | process_queue (per_objfile); |
2575 | } | |
9291a0cd TT |
2576 | |
2577 | /* Age the cache, releasing compilation units that have not | |
2578 | been used recently. */ | |
976ca316 | 2579 | per_objfile->age_comp_units (); |
9291a0cd TT |
2580 | } |
2581 | ||
97a1449a SM |
2582 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2583 | the per-objfile for which this symtab is instantiated. | |
2584 | ||
2585 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2586 | |
43f3e411 | 2587 | static struct compunit_symtab * |
97a1449a | 2588 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2589 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2590 | bool skip_partial) |
9291a0cd | 2591 | { |
976ca316 | 2592 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2593 | |
976ca316 | 2594 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2595 | { |
976ca316 | 2596 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2597 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2598 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2599 | process_cu_includes (per_objfile); | |
9291a0cd | 2600 | } |
f194fefb | 2601 | |
976ca316 | 2602 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2603 | } |
2604 | ||
ff4c9fec | 2605 | /* See declaration. */ |
f4dc4d17 | 2606 | |
ff4c9fec | 2607 | dwarf2_per_cu_data * |
5989a64e | 2608 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2609 | { |
b76e467d | 2610 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2611 | { |
b76e467d | 2612 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2613 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2614 | return &this->all_type_units[index]->per_cu; |
2615 | } | |
f4dc4d17 | 2616 | |
ff4c9fec SM |
2617 | return this->all_comp_units[index]; |
2618 | } | |
f4dc4d17 | 2619 | |
ff4c9fec | 2620 | /* See declaration. */ |
2fdf6df6 | 2621 | |
ff4c9fec | 2622 | dwarf2_per_cu_data * |
5989a64e | 2623 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2624 | { |
b76e467d | 2625 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2626 | |
ff4c9fec | 2627 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2628 | } |
2629 | ||
ff4c9fec | 2630 | /* See declaration. */ |
f4dc4d17 | 2631 | |
ff4c9fec | 2632 | signatured_type * |
5989a64e | 2633 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2634 | { |
b2bdb8cf | 2635 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2636 | |
ff4c9fec | 2637 | return this->all_type_units[index]; |
1fd400ff TT |
2638 | } |
2639 | ||
d3473f0c TT |
2640 | /* See read.h. */ |
2641 | ||
2642 | dwarf2_per_cu_data * | |
5989a64e | 2643 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2644 | { |
2645 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2646 | result->per_bfd = this; |
d3473f0c TT |
2647 | result->index = m_num_psymtabs++; |
2648 | return result; | |
2649 | } | |
2650 | ||
2651 | /* See read.h. */ | |
2652 | ||
2653 | signatured_type * | |
5989a64e | 2654 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2655 | { |
2656 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2657 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2658 | result->per_cu.index = m_num_psymtabs++; |
2659 | return result; | |
2660 | } | |
2661 | ||
168c9250 | 2662 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2663 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2664 | |
2665 | static dwarf2_per_cu_data * | |
168c9250 SM |
2666 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2667 | struct dwarf2_section_info *section, | |
2668 | int is_dwz, | |
2669 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2670 | { |
168c9250 | 2671 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2672 | the_cu->sect_off = sect_off; |
2673 | the_cu->length = length; | |
4b514bc8 | 2674 | the_cu->section = section; |
168c9250 | 2675 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2676 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2677 | the_cu->is_dwz = is_dwz; |
2678 | return the_cu; | |
2679 | } | |
2680 | ||
2ec9a5e0 TT |
2681 | /* A helper for create_cus_from_index that handles a given list of |
2682 | CUs. */ | |
2fdf6df6 | 2683 | |
74a0d9f6 | 2684 | static void |
168c9250 | 2685 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2686 | const gdb_byte *cu_list, offset_type n_elements, |
2687 | struct dwarf2_section_info *section, | |
b76e467d | 2688 | int is_dwz) |
9291a0cd | 2689 | { |
12359b5e | 2690 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2691 | { |
74a0d9f6 | 2692 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2693 | |
2694 | sect_offset sect_off | |
2695 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2696 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2697 | cu_list += 2 * 8; |
2698 | ||
b76e467d | 2699 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2700 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2701 | length); | |
2702 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2703 | } |
9291a0cd TT |
2704 | } |
2705 | ||
2ec9a5e0 | 2706 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2707 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2708 | |
74a0d9f6 | 2709 | static void |
168c9250 | 2710 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2711 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2712 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2713 | { | |
168c9250 SM |
2714 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2715 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2716 | |
168c9250 SM |
2717 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2718 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2719 | |
2720 | if (dwz_elements == 0) | |
74a0d9f6 | 2721 | return; |
2ec9a5e0 | 2722 | |
168c9250 SM |
2723 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2724 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2725 | &dwz->info, 1); |
2ec9a5e0 TT |
2726 | } |
2727 | ||
1fd400ff | 2728 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2729 | |
74a0d9f6 | 2730 | static void |
12359b5e | 2731 | create_signatured_type_table_from_index |
168c9250 SM |
2732 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2733 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2734 | { |
168c9250 SM |
2735 | gdb_assert (per_bfd->all_type_units.empty ()); |
2736 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2737 | |
298e9637 | 2738 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2739 | |
12359b5e | 2740 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2741 | { |
52dc124a | 2742 | struct signatured_type *sig_type; |
9c541725 | 2743 | ULONGEST signature; |
1fd400ff | 2744 | void **slot; |
9c541725 | 2745 | cu_offset type_offset_in_tu; |
1fd400ff | 2746 | |
74a0d9f6 | 2747 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2748 | sect_offset sect_off |
2749 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2750 | type_offset_in_tu | |
2751 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2752 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2753 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2754 | bytes += 3 * 8; | |
2755 | ||
168c9250 | 2756 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2757 | sig_type->signature = signature; |
9c541725 | 2758 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2759 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2760 | sig_type->per_cu.section = section; |
9c541725 | 2761 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2762 | sig_type->per_cu.v.quick |
168c9250 | 2763 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2764 | struct dwarf2_per_cu_quick_data); |
2765 | ||
b0b6a987 | 2766 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2767 | *slot = sig_type; |
1fd400ff | 2768 | |
168c9250 | 2769 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2770 | } |
2771 | ||
168c9250 | 2772 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2773 | } |
2774 | ||
927aa2e7 JK |
2775 | /* Create the signatured type hash table from .debug_names. */ |
2776 | ||
2777 | static void | |
2778 | create_signatured_type_table_from_debug_names | |
976ca316 | 2779 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2780 | const mapped_debug_names &map, |
2781 | struct dwarf2_section_info *section, | |
2782 | struct dwarf2_section_info *abbrev_section) | |
2783 | { | |
976ca316 | 2784 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2785 | |
96b79293 TT |
2786 | section->read (objfile); |
2787 | abbrev_section->read (objfile); | |
927aa2e7 | 2788 | |
976ca316 SM |
2789 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
2790 | per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2791 | |
298e9637 | 2792 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2793 | |
2794 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2795 | { | |
2796 | struct signatured_type *sig_type; | |
927aa2e7 | 2797 | void **slot; |
927aa2e7 JK |
2798 | |
2799 | sect_offset sect_off | |
2800 | = (sect_offset) (extract_unsigned_integer | |
2801 | (map.tu_table_reordered + i * map.offset_size, | |
2802 | map.offset_size, | |
2803 | map.dwarf5_byte_order)); | |
2804 | ||
2805 | comp_unit_head cu_header; | |
976ca316 | 2806 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2807 | abbrev_section, |
927aa2e7 JK |
2808 | section->buffer + to_underlying (sect_off), |
2809 | rcuh_kind::TYPE); | |
2810 | ||
976ca316 | 2811 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2812 | sig_type->signature = cu_header.signature; |
2813 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2814 | sig_type->per_cu.is_debug_types = 1; | |
2815 | sig_type->per_cu.section = section; | |
2816 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2817 | sig_type->per_cu.v.quick |
976ca316 | 2818 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2819 | struct dwarf2_per_cu_quick_data); |
2820 | ||
b0b6a987 | 2821 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2822 | *slot = sig_type; |
2823 | ||
976ca316 | 2824 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2825 | } |
2826 | ||
976ca316 | 2827 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2828 | } |
2829 | ||
9291a0cd TT |
2830 | /* Read the address map data from the mapped index, and use it to |
2831 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2832 | |
9291a0cd | 2833 | static void |
976ca316 | 2834 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2835 | struct mapped_index *index) |
9291a0cd | 2836 | { |
976ca316 | 2837 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 2838 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2839 | const gdb_byte *iter, *end; |
9291a0cd | 2840 | struct addrmap *mutable_map; |
9291a0cd TT |
2841 | CORE_ADDR baseaddr; |
2842 | ||
8268c778 PA |
2843 | auto_obstack temp_obstack; |
2844 | ||
9291a0cd TT |
2845 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2846 | ||
f00a2de2 PA |
2847 | iter = index->address_table.data (); |
2848 | end = iter + index->address_table.size (); | |
9291a0cd | 2849 | |
b3b3bada | 2850 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2851 | |
2852 | while (iter < end) | |
2853 | { | |
2854 | ULONGEST hi, lo, cu_index; | |
2855 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2856 | iter += 8; | |
2857 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2858 | iter += 8; | |
2859 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2860 | iter += 4; | |
f652bce2 | 2861 | |
24a55014 | 2862 | if (lo > hi) |
f652bce2 | 2863 | { |
b98664d3 | 2864 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2865 | hex_string (lo), hex_string (hi)); |
24a55014 | 2866 | continue; |
f652bce2 | 2867 | } |
24a55014 | 2868 | |
976ca316 | 2869 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2870 | { |
b98664d3 | 2871 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2872 | (unsigned) cu_index); |
24a55014 | 2873 | continue; |
f652bce2 | 2874 | } |
24a55014 | 2875 | |
79748972 TT |
2876 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2877 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2878 | addrmap_set_empty (mutable_map, lo, hi - 1, |
976ca316 | 2879 | per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2880 | } |
2881 | ||
d320c2b5 | 2882 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2883 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2884 | } |
2885 | ||
927aa2e7 JK |
2886 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2887 | populate the objfile's psymtabs_addrmap. */ | |
2888 | ||
2889 | static void | |
976ca316 | 2890 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2891 | struct dwarf2_section_info *section) |
2892 | { | |
976ca316 | 2893 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2894 | bfd *abfd = objfile->obfd; |
08feed99 | 2895 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2896 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2897 | |
2898 | auto_obstack temp_obstack; | |
2899 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2900 | ||
2901 | std::unordered_map<sect_offset, | |
2902 | dwarf2_per_cu_data *, | |
2903 | gdb::hash_enum<sect_offset>> | |
2904 | debug_info_offset_to_per_cu; | |
976ca316 | 2905 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2906 | { |
927aa2e7 JK |
2907 | const auto insertpair |
2908 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2909 | if (!insertpair.second) | |
2910 | { | |
2911 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2912 | "debug_info_offset %s, ignoring .debug_aranges."), |
2913 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2914 | return; |
2915 | } | |
2916 | } | |
2917 | ||
96b79293 | 2918 | section->read (objfile); |
927aa2e7 JK |
2919 | |
2920 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2921 | ||
2922 | const gdb_byte *addr = section->buffer; | |
2923 | ||
2924 | while (addr < section->buffer + section->size) | |
2925 | { | |
2926 | const gdb_byte *const entry_addr = addr; | |
2927 | unsigned int bytes_read; | |
2928 | ||
2929 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2930 | &bytes_read); | |
2931 | addr += bytes_read; | |
2932 | ||
2933 | const gdb_byte *const entry_end = addr + entry_length; | |
2934 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2935 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2936 | if (addr + entry_length > section->buffer + section->size) | |
2937 | { | |
47e3f474 | 2938 | warning (_("Section .debug_aranges in %s entry at offset %s " |
dda83cd7 | 2939 | "length %s exceeds section length %s, " |
927aa2e7 | 2940 | "ignoring .debug_aranges."), |
47e3f474 TV |
2941 | objfile_name (objfile), |
2942 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2943 | plongest (bytes_read + entry_length), |
2944 | pulongest (section->size)); | |
2945 | return; | |
2946 | } | |
2947 | ||
2948 | /* The version number. */ | |
2949 | const uint16_t version = read_2_bytes (abfd, addr); | |
2950 | addr += 2; | |
2951 | if (version != 2) | |
2952 | { | |
47e3f474 | 2953 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2954 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2955 | objfile_name (objfile), |
2956 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2957 | return; |
2958 | } | |
2959 | ||
2960 | const uint64_t debug_info_offset | |
2961 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2962 | addr += offset_size; | |
2963 | const auto per_cu_it | |
2964 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2965 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2966 | { | |
47e3f474 | 2967 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2968 | "debug_info_offset %s does not exists, " |
2969 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2970 | objfile_name (objfile), |
2971 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2972 | pulongest (debug_info_offset)); |
2973 | return; | |
2974 | } | |
2975 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2976 | ||
2977 | const uint8_t address_size = *addr++; | |
2978 | if (address_size < 1 || address_size > 8) | |
2979 | { | |
47e3f474 | 2980 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2981 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2982 | objfile_name (objfile), |
2983 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2984 | return; |
2985 | } | |
2986 | ||
2987 | const uint8_t segment_selector_size = *addr++; | |
2988 | if (segment_selector_size != 0) | |
2989 | { | |
47e3f474 | 2990 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2991 | "segment_selector_size %u is not supported, " |
2992 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2993 | objfile_name (objfile), |
2994 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2995 | segment_selector_size); |
2996 | return; | |
2997 | } | |
2998 | ||
2999 | /* Must pad to an alignment boundary that is twice the address | |
dda83cd7 SM |
3000 | size. It is undocumented by the DWARF standard but GCC does |
3001 | use it. */ | |
927aa2e7 JK |
3002 | for (size_t padding = ((-(addr - section->buffer)) |
3003 | & (2 * address_size - 1)); | |
dda83cd7 | 3004 | padding > 0; padding--) |
927aa2e7 JK |
3005 | if (*addr++ != 0) |
3006 | { | |
47e3f474 | 3007 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3008 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
3009 | objfile_name (objfile), |
3010 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3011 | return; |
3012 | } | |
3013 | ||
3014 | for (;;) | |
3015 | { | |
3016 | if (addr + 2 * address_size > entry_end) | |
3017 | { | |
47e3f474 | 3018 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3019 | "address list is not properly terminated, " |
3020 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3021 | objfile_name (objfile), |
3022 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3023 | return; |
3024 | } | |
3025 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3026 | dwarf5_byte_order); | |
3027 | addr += address_size; | |
3028 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3029 | dwarf5_byte_order); | |
3030 | addr += address_size; | |
3031 | if (start == 0 && length == 0) | |
3032 | break; | |
976ca316 | 3033 | if (start == 0 && !per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
3034 | { |
3035 | /* Symbol was eliminated due to a COMDAT group. */ | |
3036 | continue; | |
3037 | } | |
3038 | ULONGEST end = start + length; | |
79748972 TT |
3039 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
3040 | - baseaddr); | |
3041 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
3042 | - baseaddr); | |
927aa2e7 JK |
3043 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
3044 | } | |
3045 | } | |
3046 | ||
d320c2b5 | 3047 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3048 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
3049 | } |
3050 | ||
9291a0cd TT |
3051 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3052 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3053 | constant pool and return true. If NAME cannot be found, return |
3054 | false. */ | |
2fdf6df6 | 3055 | |
109483d9 | 3056 | static bool |
9291a0cd TT |
3057 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3058 | offset_type **vec_out) | |
3059 | { | |
0cf03b49 | 3060 | offset_type hash; |
9291a0cd | 3061 | offset_type slot, step; |
559a7a62 | 3062 | int (*cmp) (const char *, const char *); |
9291a0cd | 3063 | |
791afaa2 | 3064 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3065 | if (current_language->la_language == language_cplus |
45280282 IB |
3066 | || current_language->la_language == language_fortran |
3067 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3068 | { |
3069 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3070 | not contain any. */ | |
a8719064 | 3071 | |
72998fb3 | 3072 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3073 | { |
109483d9 | 3074 | without_params = cp_remove_params (name); |
0cf03b49 | 3075 | |
72998fb3 | 3076 | if (without_params != NULL) |
791afaa2 | 3077 | name = without_params.get (); |
0cf03b49 JK |
3078 | } |
3079 | } | |
3080 | ||
559a7a62 | 3081 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3082 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3083 | simulate our NAME being searched is also lowercased. */ |
3084 | hash = mapped_index_string_hash ((index->version == 4 | |
dda83cd7 | 3085 | && case_sensitivity == case_sensitive_off |
559a7a62 JK |
3086 | ? 5 : index->version), |
3087 | name); | |
3088 | ||
f00a2de2 PA |
3089 | slot = hash & (index->symbol_table.size () - 1); |
3090 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3091 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3092 | |
3093 | for (;;) | |
3094 | { | |
9291a0cd | 3095 | const char *str; |
f00a2de2 PA |
3096 | |
3097 | const auto &bucket = index->symbol_table[slot]; | |
3098 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3099 | return false; |
9291a0cd | 3100 | |
f00a2de2 | 3101 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3102 | if (!cmp (name, str)) |
9291a0cd TT |
3103 | { |
3104 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3105 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3106 | return true; |
9291a0cd TT |
3107 | } |
3108 | ||
f00a2de2 | 3109 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3110 | } |
3111 | } | |
3112 | ||
4485a1c1 SM |
3113 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3114 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3115 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3116 | ok to use deprecated sections. |
3117 | ||
3118 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3119 | out parameters that are filled in with information about the CU and | |
3120 | TU lists in the section. | |
3121 | ||
4485a1c1 | 3122 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3123 | |
d33bc52e | 3124 | static bool |
3810f182 | 3125 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
3126 | bool deprecated_ok, |
3127 | gdb::array_view<const gdb_byte> buffer, | |
3128 | struct mapped_index *map, | |
3129 | const gdb_byte **cu_list, | |
3130 | offset_type *cu_list_elements, | |
3131 | const gdb_byte **types_list, | |
3132 | offset_type *types_list_elements) | |
3133 | { | |
3134 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3135 | |
9291a0cd | 3136 | /* Version check. */ |
4485a1c1 | 3137 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3138 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3139 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3140 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3141 | indices. */ |
831adc1f | 3142 | if (version < 4) |
481860b3 GB |
3143 | { |
3144 | static int warning_printed = 0; | |
3145 | if (!warning_printed) | |
3146 | { | |
3147 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3148 | filename); |
481860b3 GB |
3149 | warning_printed = 1; |
3150 | } | |
3151 | return 0; | |
3152 | } | |
3153 | /* Index version 4 uses a different hash function than index version | |
3154 | 5 and later. | |
3155 | ||
3156 | Versions earlier than 6 did not emit psymbols for inlined | |
3157 | functions. Using these files will cause GDB not to be able to | |
3158 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3159 | indices unless the user has done |
3160 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3161 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3162 | { |
3163 | static int warning_printed = 0; | |
3164 | if (!warning_printed) | |
3165 | { | |
e615022a DE |
3166 | warning (_("\ |
3167 | Skipping deprecated .gdb_index section in %s.\n\ | |
3168 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3169 | to use the section anyway."), | |
2ec9a5e0 | 3170 | filename); |
481860b3 GB |
3171 | warning_printed = 1; |
3172 | } | |
3173 | return 0; | |
3174 | } | |
796a7ff8 | 3175 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3176 | of the TU (for symbols coming from TUs), |
3177 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3178 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3179 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3180 | These are just performance bugs, and we can't distinguish gdb-generated | |
3181 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3182 | |
481860b3 | 3183 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3184 | longer backward compatible. */ |
796a7ff8 | 3185 | if (version > 8) |
594e8718 | 3186 | return 0; |
9291a0cd | 3187 | |
559a7a62 | 3188 | map->version = version; |
9291a0cd | 3189 | |
4485a1c1 | 3190 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3191 | |
4485a1c1 | 3192 | int i = 0; |
2ec9a5e0 TT |
3193 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3194 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3195 | / 8); | |
1fd400ff TT |
3196 | ++i; |
3197 | ||
2ec9a5e0 TT |
3198 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3199 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3200 | - MAYBE_SWAP (metadata[i])) | |
3201 | / 8); | |
987d643c | 3202 | ++i; |
1fd400ff | 3203 | |
f00a2de2 PA |
3204 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3205 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3206 | map->address_table | |
3207 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3208 | ++i; |
3209 | ||
f00a2de2 PA |
3210 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3211 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3212 | map->symbol_table | |
3213 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3214 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3215 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3216 | |
f00a2de2 | 3217 | ++i; |
f9d83a0b | 3218 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3219 | |
2ec9a5e0 TT |
3220 | return 1; |
3221 | } | |
3222 | ||
4485a1c1 SM |
3223 | /* Callback types for dwarf2_read_gdb_index. */ |
3224 | ||
3225 | typedef gdb::function_view | |
5989a64e | 3226 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3227 | get_gdb_index_contents_ftype; |
3228 | typedef gdb::function_view | |
3229 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3230 | get_gdb_index_contents_dwz_ftype; | |
3231 | ||
927aa2e7 | 3232 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3233 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3234 | ||
3235 | static int | |
4485a1c1 | 3236 | dwarf2_read_gdb_index |
976ca316 | 3237 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3238 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3239 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3240 | { |
2ec9a5e0 TT |
3241 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3242 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3243 | struct dwz_file *dwz; |
976ca316 | 3244 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3245 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3246 | |
4485a1c1 | 3247 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3248 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3249 | |
3250 | if (main_index_contents.empty ()) | |
3251 | return 0; | |
3252 | ||
3063847f | 3253 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3254 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3255 | use_deprecated_index_sections, |
3256 | main_index_contents, map.get (), &cu_list, | |
3257 | &cu_list_elements, &types_list, | |
3258 | &types_list_elements)) | |
2ec9a5e0 TT |
3259 | return 0; |
3260 | ||
0fefef59 | 3261 | /* Don't use the index if it's empty. */ |
3063847f | 3262 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3263 | return 0; |
3264 | ||
2ec9a5e0 TT |
3265 | /* If there is a .dwz file, read it so we can get its CU list as |
3266 | well. */ | |
f8c41851 | 3267 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3268 | if (dwz != NULL) |
2ec9a5e0 | 3269 | { |
2ec9a5e0 TT |
3270 | struct mapped_index dwz_map; |
3271 | const gdb_byte *dwz_types_ignore; | |
3272 | offset_type dwz_types_elements_ignore; | |
3273 | ||
4485a1c1 SM |
3274 | gdb::array_view<const gdb_byte> dwz_index_content |
3275 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3276 | ||
3277 | if (dwz_index_content.empty ()) | |
3278 | return 0; | |
3279 | ||
3810f182 | 3280 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3281 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3282 | &dwz_list, &dwz_list_elements, |
3283 | &dwz_types_ignore, | |
3284 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3285 | { |
3286 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3287 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3288 | return 0; |
3289 | } | |
3290 | } | |
3291 | ||
f8c41851 SM |
3292 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3293 | dwz_list_elements); | |
1fd400ff | 3294 | |
8b70b953 TT |
3295 | if (types_list_elements) |
3296 | { | |
8b70b953 TT |
3297 | /* We can only handle a single .debug_types when we have an |
3298 | index. */ | |
f8c41851 | 3299 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3300 | return 0; |
3301 | ||
f8c41851 | 3302 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3303 | |
f8c41851 | 3304 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3305 | types_list_elements); |
8b70b953 | 3306 | } |
9291a0cd | 3307 | |
976ca316 | 3308 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3309 | |
f8c41851 SM |
3310 | per_bfd->index_table = std::move (map); |
3311 | per_bfd->using_index = 1; | |
3312 | per_bfd->quick_file_names_table = | |
3313 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3314 | ||
3315 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent | |
3316 | objfiles using the same BFD. */ | |
3317 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
3318 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
9291a0cd TT |
3319 | |
3320 | return 1; | |
3321 | } | |
3322 | ||
dee91e82 | 3323 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3324 | |
dee91e82 DE |
3325 | static void |
3326 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3327 | const gdb_byte *info_ptr, |
3e225074 | 3328 | struct die_info *comp_unit_die) |
9291a0cd | 3329 | { |
dee91e82 | 3330 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3331 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3332 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3333 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3334 | struct attribute *attr; |
7b9f3c50 DE |
3335 | void **slot; |
3336 | struct quick_file_names *qfn; | |
9291a0cd | 3337 | |
0186c6a7 DE |
3338 | gdb_assert (! this_cu->is_debug_types); |
3339 | ||
07261596 TT |
3340 | /* Our callers never want to match partial units -- instead they |
3341 | will match the enclosing full CU. */ | |
3342 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3343 | { | |
3344 | this_cu->v.quick->no_file_data = 1; | |
3345 | return; | |
3346 | } | |
3347 | ||
0186c6a7 | 3348 | lh_cu = this_cu; |
7b9f3c50 | 3349 | slot = NULL; |
dee91e82 | 3350 | |
fff8551c | 3351 | line_header_up lh; |
9c541725 | 3352 | sect_offset line_offset {}; |
fff8551c | 3353 | |
dee91e82 | 3354 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
d4df075e | 3355 | if (attr != nullptr && attr->form_is_unsigned ()) |
9291a0cd | 3356 | { |
7b9f3c50 DE |
3357 | struct quick_file_names find_entry; |
3358 | ||
d4df075e | 3359 | line_offset = (sect_offset) attr->as_unsigned (); |
7b9f3c50 DE |
3360 | |
3361 | /* We may have already read in this line header (TU line header sharing). | |
3362 | If we have we're done. */ | |
094b34ac | 3363 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3364 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3365 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3366 | &find_entry, INSERT); |
3367 | if (*slot != NULL) | |
3368 | { | |
9a3c8263 | 3369 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3370 | return; |
7b9f3c50 DE |
3371 | } |
3372 | ||
3019eac3 | 3373 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3374 | } |
3375 | if (lh == NULL) | |
3376 | { | |
094b34ac | 3377 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3378 | return; |
9291a0cd TT |
3379 | } |
3380 | ||
976ca316 | 3381 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3382 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3383 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3384 | gdb_assert (slot != NULL); |
3385 | *slot = qfn; | |
9291a0cd | 3386 | |
d721ba37 | 3387 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3388 | |
aa391654 TT |
3389 | int offset = 0; |
3390 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3391 | ++offset; | |
3392 | ||
7ba99d21 | 3393 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3394 | qfn->file_names = |
976ca316 | 3395 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3396 | qfn->num_file_names); |
aa391654 TT |
3397 | if (offset != 0) |
3398 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3399 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3400 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3401 | fnd.comp_dir).release (); | |
7b9f3c50 | 3402 | qfn->real_names = NULL; |
9291a0cd | 3403 | |
094b34ac | 3404 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3405 | } |
3406 | ||
3407 | /* A helper for the "quick" functions which attempts to read the line | |
3408 | table for THIS_CU. */ | |
3409 | ||
3410 | static struct quick_file_names * | |
ab432490 SM |
3411 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3412 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3413 | { |
0186c6a7 DE |
3414 | /* This should never be called for TUs. */ |
3415 | gdb_assert (! this_cu->is_debug_types); | |
3416 | /* Nor type unit groups. */ | |
197400e8 | 3417 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3418 | |
dee91e82 DE |
3419 | if (this_cu->v.quick->file_names != NULL) |
3420 | return this_cu->v.quick->file_names; | |
3421 | /* If we know there is no line data, no point in looking again. */ | |
3422 | if (this_cu->v.quick->no_file_data) | |
3423 | return NULL; | |
3424 | ||
ab432490 | 3425 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3426 | if (!reader.dummy_p) |
3e225074 | 3427 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3428 | |
3429 | if (this_cu->v.quick->no_file_data) | |
3430 | return NULL; | |
3431 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3432 | } |
3433 | ||
3434 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3435 | real path for a given file name from the line table. */ |
2fdf6df6 | 3436 | |
9291a0cd | 3437 | static const char * |
976ca316 | 3438 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3439 | struct quick_file_names *qfn, int index) |
9291a0cd | 3440 | { |
7b9f3c50 | 3441 | if (qfn->real_names == NULL) |
976ca316 | 3442 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3443 | qfn->num_file_names, const char *); |
9291a0cd | 3444 | |
7b9f3c50 | 3445 | if (qfn->real_names[index] == NULL) |
14278e1f | 3446 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3447 | |
7b9f3c50 | 3448 | return qfn->real_names[index]; |
9291a0cd TT |
3449 | } |
3450 | ||
3451 | static struct symtab * | |
3452 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3453 | { | |
976ca316 SM |
3454 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3455 | dwarf2_per_cu_data *dwarf_cu = per_objfile->per_bfd->all_comp_units.back (); | |
3456 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); | |
ae2de4f8 | 3457 | |
43f3e411 DE |
3458 | if (cust == NULL) |
3459 | return NULL; | |
ed2dc618 | 3460 | |
43f3e411 | 3461 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3462 | } |
3463 | ||
7b9f3c50 DE |
3464 | /* Traversal function for dw2_forget_cached_source_info. */ |
3465 | ||
3466 | static int | |
3467 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3468 | { |
7b9f3c50 | 3469 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3470 | |
7b9f3c50 | 3471 | if (file_data->real_names) |
9291a0cd | 3472 | { |
7b9f3c50 | 3473 | int i; |
9291a0cd | 3474 | |
7b9f3c50 | 3475 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3476 | { |
7b9f3c50 DE |
3477 | xfree ((void*) file_data->real_names[i]); |
3478 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3479 | } |
3480 | } | |
7b9f3c50 DE |
3481 | |
3482 | return 1; | |
3483 | } | |
3484 | ||
3485 | static void | |
3486 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3487 | { | |
976ca316 | 3488 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3489 | |
976ca316 | 3490 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3491 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3492 | } |
3493 | ||
f8eba3c6 TT |
3494 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3495 | the symtabs and calls the iterator. */ | |
3496 | ||
3497 | static int | |
3498 | dw2_map_expand_apply (struct objfile *objfile, | |
3499 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3500 | const char *name, const char *real_path, |
14bc53a8 | 3501 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3502 | { |
43f3e411 | 3503 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3504 | |
3505 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3506 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3507 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3508 | return 0; |
3509 | ||
3510 | /* This may expand more than one symtab, and we want to iterate over | |
3511 | all of them. */ | |
97a1449a | 3512 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3513 | |
14bc53a8 PA |
3514 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3515 | last_made, callback); | |
f8eba3c6 TT |
3516 | } |
3517 | ||
3518 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3519 | ||
14bc53a8 PA |
3520 | static bool |
3521 | dw2_map_symtabs_matching_filename | |
3522 | (struct objfile *objfile, const char *name, const char *real_path, | |
3523 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3524 | { |
c011a4f4 | 3525 | const char *name_basename = lbasename (name); |
976ca316 | 3526 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 3527 | |
848e3e78 DE |
3528 | /* The rule is CUs specify all the files, including those used by |
3529 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3530 | |
976ca316 | 3531 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3532 | { |
3d7bb9d9 | 3533 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3534 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3535 | continue; |
3536 | ||
976ca316 | 3537 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3538 | if (file_data == NULL) |
9291a0cd TT |
3539 | continue; |
3540 | ||
b76e467d | 3541 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3542 | { |
7b9f3c50 | 3543 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3544 | const char *this_real_name; |
9291a0cd | 3545 | |
af529f8f | 3546 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3547 | { |
f5b95b50 | 3548 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3549 | callback)) |
3550 | return true; | |
288e77a7 | 3551 | continue; |
4aac40c8 | 3552 | } |
9291a0cd | 3553 | |
c011a4f4 DE |
3554 | /* Before we invoke realpath, which can get expensive when many |
3555 | files are involved, do a quick comparison of the basenames. */ | |
3556 | if (! basenames_may_differ | |
3557 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3558 | continue; | |
3559 | ||
976ca316 | 3560 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
da235a7c | 3561 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3562 | { |
da235a7c | 3563 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3564 | callback)) |
3565 | return true; | |
288e77a7 | 3566 | continue; |
da235a7c | 3567 | } |
9291a0cd | 3568 | |
da235a7c JK |
3569 | if (real_path != NULL) |
3570 | { | |
af529f8f JK |
3571 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3572 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3573 | if (this_real_name != NULL |
af529f8f | 3574 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3575 | { |
f5b95b50 | 3576 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3577 | callback)) |
3578 | return true; | |
288e77a7 | 3579 | continue; |
9291a0cd TT |
3580 | } |
3581 | } | |
3582 | } | |
3583 | } | |
3584 | ||
14bc53a8 | 3585 | return false; |
9291a0cd TT |
3586 | } |
3587 | ||
da51c347 DE |
3588 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3589 | ||
3590 | struct dw2_symtab_iterator | |
9291a0cd | 3591 | { |
ed2dc618 | 3592 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3593 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3594 | /* If set, only look for symbols that match that block. Valid values are |
3595 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3596 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3597 | /* The kind of symbol we're looking for. */ |
3598 | domain_enum domain; | |
3599 | /* The list of CUs from the index entry of the symbol, | |
3600 | or NULL if not found. */ | |
3601 | offset_type *vec; | |
3602 | /* The next element in VEC to look at. */ | |
3603 | int next; | |
3604 | /* The number of elements in VEC, or zero if there is no match. */ | |
3605 | int length; | |
8943b874 DE |
3606 | /* Have we seen a global version of the symbol? |
3607 | If so we can ignore all further global instances. | |
3608 | This is to work around gold/15646, inefficient gold-generated | |
3609 | indices. */ | |
3610 | int global_seen; | |
da51c347 | 3611 | }; |
9291a0cd | 3612 | |
e5f3ece2 | 3613 | /* Initialize the index symtab iterator ITER, common part. */ |
2fdf6df6 | 3614 | |
9291a0cd | 3615 | static void |
e5f3ece2 TV |
3616 | dw2_symtab_iter_init_common (struct dw2_symtab_iterator *iter, |
3617 | dwarf2_per_objfile *per_objfile, | |
3618 | gdb::optional<block_enum> block_index, | |
3619 | domain_enum domain) | |
da51c347 | 3620 | { |
976ca316 | 3621 | iter->per_objfile = per_objfile; |
da51c347 DE |
3622 | iter->block_index = block_index; |
3623 | iter->domain = domain; | |
3624 | iter->next = 0; | |
8943b874 | 3625 | iter->global_seen = 0; |
e5f3ece2 TV |
3626 | iter->vec = NULL; |
3627 | iter->length = 0; | |
3628 | } | |
da51c347 | 3629 | |
e5f3ece2 TV |
3630 | /* Initialize the index symtab iterator ITER, const char *NAME variant. */ |
3631 | ||
3632 | static void | |
3633 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3634 | dwarf2_per_objfile *per_objfile, | |
3635 | gdb::optional<block_enum> block_index, | |
3636 | domain_enum domain, | |
3637 | const char *name) | |
3638 | { | |
3639 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
ed2dc618 | 3640 | |
e5f3ece2 | 3641 | mapped_index *index = per_objfile->per_bfd->index_table.get (); |
ed2dc618 | 3642 | /* index is NULL if OBJF_READNOW. */ |
e5f3ece2 TV |
3643 | if (index == NULL) |
3644 | return; | |
3645 | ||
3646 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 | 3647 | iter->length = MAYBE_SWAP (*iter->vec); |
e5f3ece2 TV |
3648 | } |
3649 | ||
3650 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ | |
3651 | ||
3652 | static void | |
3653 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3654 | dwarf2_per_objfile *per_objfile, | |
3655 | gdb::optional<block_enum> block_index, | |
3656 | domain_enum domain, offset_type namei) | |
3657 | { | |
3658 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
3659 | ||
3660 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3661 | /* index is NULL if OBJF_READNOW. */ | |
3662 | if (index == NULL) | |
3663 | return; | |
3664 | ||
3665 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
3666 | const auto &bucket = index->symbol_table[namei]; | |
3667 | ||
3668 | iter->vec = (offset_type *) (index->constant_pool | |
3669 | + MAYBE_SWAP (bucket.vec)); | |
3670 | iter->length = MAYBE_SWAP (*iter->vec); | |
da51c347 DE |
3671 | } |
3672 | ||
3673 | /* Return the next matching CU or NULL if there are no more. */ | |
3674 | ||
3675 | static struct dwarf2_per_cu_data * | |
3676 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3677 | { | |
976ca316 | 3678 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3679 | |
da51c347 DE |
3680 | for ( ; iter->next < iter->length; ++iter->next) |
3681 | { | |
3682 | offset_type cu_index_and_attrs = | |
3683 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3684 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3685 | gdb_index_symbol_kind symbol_kind = |
3686 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3687 | /* Only check the symbol attributes if they're present. | |
3688 | Indices prior to version 7 don't record them, | |
3689 | and indices >= 7 may elide them for certain symbols | |
3690 | (gold does this). */ | |
3691 | int attrs_valid = | |
976ca316 | 3692 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3693 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3694 | ||
3190f0c6 | 3695 | /* Don't crash on bad data. */ |
976ca316 SM |
3696 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
3697 | + per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3698 | { |
b98664d3 | 3699 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3700 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3701 | continue; |
3702 | } | |
3703 | ||
976ca316 | 3704 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3705 | |
da51c347 | 3706 | /* Skip if already read in. */ |
976ca316 | 3707 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3708 | continue; |
3709 | ||
8943b874 DE |
3710 | /* Check static vs global. */ |
3711 | if (attrs_valid) | |
3712 | { | |
2b79f376 SM |
3713 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3714 | ||
3715 | if (iter->block_index.has_value ()) | |
3716 | { | |
3717 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3718 | ||
3719 | if (is_static != want_static) | |
3720 | continue; | |
3721 | } | |
3722 | ||
8943b874 | 3723 | /* Work around gold/15646. */ |
f030440d TV |
3724 | if (!is_static |
3725 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3726 | { | |
3727 | if (iter->global_seen) | |
3728 | continue; | |
3729 | ||
3730 | iter->global_seen = 1; | |
3731 | } | |
8943b874 | 3732 | } |
da51c347 DE |
3733 | |
3734 | /* Only check the symbol's kind if it has one. */ | |
3735 | if (attrs_valid) | |
3736 | { | |
3737 | switch (iter->domain) | |
3738 | { | |
3739 | case VAR_DOMAIN: | |
3740 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3741 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3742 | /* Some types are also in VAR_DOMAIN. */ | |
3743 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3744 | continue; | |
3745 | break; | |
3746 | case STRUCT_DOMAIN: | |
3747 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3748 | continue; | |
3749 | break; | |
3750 | case LABEL_DOMAIN: | |
3751 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3752 | continue; | |
3753 | break; | |
59c35742 AB |
3754 | case MODULE_DOMAIN: |
3755 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3756 | continue; | |
3757 | break; | |
da51c347 DE |
3758 | default: |
3759 | break; | |
3760 | } | |
3761 | } | |
3762 | ||
3763 | ++iter->next; | |
3764 | return per_cu; | |
3765 | } | |
3766 | ||
3767 | return NULL; | |
3768 | } | |
3769 | ||
43f3e411 | 3770 | static struct compunit_symtab * |
c7f839cb | 3771 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3772 | const char *name, domain_enum domain) |
9291a0cd | 3773 | { |
43f3e411 | 3774 | struct compunit_symtab *stab_best = NULL; |
976ca316 | 3775 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 3776 | |
b5ec771e PA |
3777 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3778 | ||
ed2dc618 SM |
3779 | struct dw2_symtab_iterator iter; |
3780 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3781 | |
976ca316 | 3782 | dw2_symtab_iter_init (&iter, per_objfile, block_index, domain, name); |
9291a0cd | 3783 | |
ed2dc618 SM |
3784 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3785 | { | |
3786 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 3787 | struct compunit_symtab *stab |
976ca316 | 3788 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
ed2dc618 | 3789 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3790 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3791 | |
ed2dc618 SM |
3792 | sym = block_find_symbol (block, name, domain, |
3793 | block_find_non_opaque_type_preferred, | |
3794 | &with_opaque); | |
b2e2f908 | 3795 | |
ed2dc618 SM |
3796 | /* Some caution must be observed with overloaded functions |
3797 | and methods, since the index will not contain any overload | |
3798 | information (but NAME might contain it). */ | |
da51c347 | 3799 | |
ed2dc618 SM |
3800 | if (sym != NULL |
3801 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3802 | return stab; | |
3803 | if (with_opaque != NULL | |
3804 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3805 | stab_best = stab; | |
da51c347 | 3806 | |
ed2dc618 | 3807 | /* Keep looking through other CUs. */ |
9291a0cd | 3808 | } |
9291a0cd | 3809 | |
da51c347 | 3810 | return stab_best; |
9291a0cd TT |
3811 | } |
3812 | ||
3813 | static void | |
3814 | dw2_print_stats (struct objfile *objfile) | |
3815 | { | |
976ca316 SM |
3816 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3817 | int total = (per_objfile->per_bfd->all_comp_units.size () | |
3818 | + per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3819 | int count = 0; |
9291a0cd | 3820 | |
ed2dc618 | 3821 | for (int i = 0; i < total; ++i) |
9291a0cd | 3822 | { |
976ca316 | 3823 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3824 | |
976ca316 | 3825 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3826 | ++count; |
3827 | } | |
e4a48d9d | 3828 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3829 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3830 | } | |
3831 | ||
779bd270 DE |
3832 | /* This dumps minimal information about the index. |
3833 | It is called via "mt print objfiles". | |
3834 | One use is to verify .gdb_index has been loaded by the | |
3835 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3836 | ||
9291a0cd TT |
3837 | static void |
3838 | dw2_dump (struct objfile *objfile) | |
3839 | { | |
976ca316 | 3840 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3841 | |
976ca316 | 3842 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3843 | printf_filtered (".gdb_index:"); |
976ca316 | 3844 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3845 | { |
3846 | printf_filtered (" version %d\n", | |
976ca316 | 3847 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3848 | } |
3849 | else | |
3850 | printf_filtered (" faked for \"readnow\"\n"); | |
3851 | printf_filtered ("\n"); | |
9291a0cd TT |
3852 | } |
3853 | ||
9291a0cd TT |
3854 | static void |
3855 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3856 | const char *func_name) | |
3857 | { | |
976ca316 | 3858 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
da51c347 | 3859 | |
ed2dc618 SM |
3860 | struct dw2_symtab_iterator iter; |
3861 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3862 | |
976ca316 | 3863 | dw2_symtab_iter_init (&iter, per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3864 | |
ed2dc618 | 3865 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3866 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
da51c347 | 3867 | |
9291a0cd TT |
3868 | } |
3869 | ||
3870 | static void | |
3871 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3872 | { | |
976ca316 SM |
3873 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3874 | int total_units = (per_objfile->per_bfd->all_comp_units.size () | |
3875 | + per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3876 | |
ed2dc618 | 3877 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3878 | { |
976ca316 | 3879 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3880 | |
58f0c718 TT |
3881 | /* We don't want to directly expand a partial CU, because if we |
3882 | read it with the wrong language, then assertion failures can | |
3883 | be triggered later on. See PR symtab/23010. So, tell | |
3884 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3885 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3886 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3887 | } |
3888 | } | |
3889 | ||
3890 | static void | |
652a8996 JK |
3891 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3892 | const char *fullname) | |
9291a0cd | 3893 | { |
976ca316 | 3894 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
d4637a04 DE |
3895 | |
3896 | /* We don't need to consider type units here. | |
3897 | This is only called for examining code, e.g. expand_line_sal. | |
3898 | There can be an order of magnitude (or more) more type units | |
3899 | than comp units, and we avoid them if we can. */ | |
3900 | ||
976ca316 | 3901 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3902 | { |
3d7bb9d9 | 3903 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3904 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3905 | continue; |
3906 | ||
976ca316 | 3907 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3908 | if (file_data == NULL) |
9291a0cd TT |
3909 | continue; |
3910 | ||
b76e467d | 3911 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3912 | { |
652a8996 JK |
3913 | const char *this_fullname = file_data->file_names[j]; |
3914 | ||
3915 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3916 | { |
976ca316 | 3917 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
9291a0cd TT |
3918 | break; |
3919 | } | |
3920 | } | |
3921 | } | |
3922 | } | |
3923 | ||
9a0bacfb TV |
3924 | static void |
3925 | dw2_expand_symtabs_matching_symbol | |
3926 | (mapped_index_base &index, | |
3927 | const lookup_name_info &lookup_name_in, | |
3928 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3929 | enum search_domain kind, | |
fcf23d5b SM |
3930 | gdb::function_view<bool (offset_type)> match_callback, |
3931 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb TV |
3932 | |
3933 | static void | |
3934 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3935 | (dwarf2_per_cu_data *per_cu, |
3936 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3937 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3938 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3939 | ||
9291a0cd | 3940 | static void |
199b4314 TT |
3941 | dw2_map_matching_symbols |
3942 | (struct objfile *objfile, | |
b054970d | 3943 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3944 | int global, |
3945 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3946 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3947 | { |
1aa98955 | 3948 | /* Used for Ada. */ |
976ca316 | 3949 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3950 | |
9a0bacfb TV |
3951 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3952 | ||
976ca316 | 3953 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3954 | { |
976ca316 | 3955 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3956 | |
9a0bacfb TV |
3957 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3958 | auto matcher = [&] (const char *symname) | |
3959 | { | |
3960 | if (ordered_compare == nullptr) | |
3961 | return true; | |
3962 | return ordered_compare (symname, match_name) == 0; | |
3963 | }; | |
3964 | ||
3965 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3966 | [&] (offset_type namei) | |
3967 | { | |
3968 | struct dw2_symtab_iterator iter; | |
3969 | struct dwarf2_per_cu_data *per_cu; | |
3970 | ||
976ca316 | 3971 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3972 | namei); |
9a0bacfb | 3973 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3974 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3975 | nullptr); |
9a0bacfb | 3976 | return true; |
976ca316 | 3977 | }, per_objfile); |
9a0bacfb TV |
3978 | } |
3979 | else | |
3980 | { | |
3981 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3982 | proceed assuming all symtabs have been read in. */ | |
3983 | } | |
1aa98955 TV |
3984 | |
3985 | for (compunit_symtab *cust : objfile->compunits ()) | |
3986 | { | |
3987 | const struct block *block; | |
3988 | ||
3989 | if (cust == NULL) | |
3990 | continue; | |
3991 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3992 | if (!iterate_over_symbols_terminated (block, name, | |
3993 | domain, callback)) | |
3994 | return; | |
3995 | } | |
9291a0cd TT |
3996 | } |
3997 | ||
e1ef7d7a PA |
3998 | /* Starting from a search name, return the string that finds the upper |
3999 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4000 | list. Returns the empty string to indicate that the upper bound is | |
4001 | the end of the list. */ | |
4002 | ||
4003 | static std::string | |
4004 | make_sort_after_prefix_name (const char *search_name) | |
4005 | { | |
4006 | /* When looking to complete "func", we find the upper bound of all | |
4007 | symbols that start with "func" by looking for where we'd insert | |
4008 | the closest string that would follow "func" in lexicographical | |
4009 | order. Usually, that's "func"-with-last-character-incremented, | |
4010 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4011 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4012 | Especially mind the 0xff character, which is a valid character in | |
4013 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4014 | rule out compilers allowing it in identifiers. Note that | |
4015 | conveniently, strcmp/strcasecmp are specified to compare | |
4016 | characters interpreted as unsigned char. So what we do is treat | |
4017 | the whole string as a base 256 number composed of a sequence of | |
4018 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4019 | to 0, and carries 1 to the following more-significant position. | |
4020 | If the very first character in SEARCH_NAME ends up incremented | |
4021 | and carries/overflows, then the upper bound is the end of the | |
4022 | list. The string after the empty string is also the empty | |
4023 | string. | |
4024 | ||
4025 | Some examples of this operation: | |
4026 | ||
4027 | SEARCH_NAME => "+1" RESULT | |
4028 | ||
4029 | "abc" => "abd" | |
4030 | "ab\xff" => "ac" | |
4031 | "\xff" "a" "\xff" => "\xff" "b" | |
4032 | "\xff" => "" | |
4033 | "\xff\xff" => "" | |
4034 | "" => "" | |
4035 | ||
4036 | Then, with these symbols for example: | |
4037 | ||
4038 | func | |
4039 | func1 | |
4040 | fund | |
4041 | ||
4042 | completing "func" looks for symbols between "func" and | |
4043 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4044 | which finds "func" and "func1", but not "fund". | |
4045 | ||
4046 | And with: | |
4047 | ||
4048 | funcÿ (Latin1 'ÿ' [0xff]) | |
4049 | funcÿ1 | |
4050 | fund | |
4051 | ||
4052 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4053 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4054 | ||
4055 | And with: | |
4056 | ||
4057 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4058 | ÿÿ1 | |
4059 | ||
4060 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4061 | the end of the list. | |
4062 | */ | |
4063 | std::string after = search_name; | |
4064 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4065 | after.pop_back (); | |
4066 | if (!after.empty ()) | |
4067 | after.back () = (unsigned char) after.back () + 1; | |
4068 | return after; | |
4069 | } | |
4070 | ||
5c58de74 | 4071 | /* See declaration. */ |
61d96d7e | 4072 | |
5c58de74 PA |
4073 | std::pair<std::vector<name_component>::const_iterator, |
4074 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4075 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
4076 | (const lookup_name_info &lookup_name_without_params, language lang, |
4077 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 4078 | { |
5c58de74 PA |
4079 | auto *name_cmp |
4080 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 4081 | |
3b00ef10 | 4082 | const char *lang_name |
e0802d59 | 4083 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 4084 | |
3f563c84 PA |
4085 | /* Comparison function object for lower_bound that matches against a |
4086 | given symbol name. */ | |
4087 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4088 | const char *name) | |
4089 | { | |
fcf23d5b | 4090 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
4091 | const char *elem_name = elem_qualified + elem.name_offset; |
4092 | return name_cmp (elem_name, name) < 0; | |
4093 | }; | |
4094 | ||
4095 | /* Comparison function object for upper_bound that matches against a | |
4096 | given symbol name. */ | |
4097 | auto lookup_compare_upper = [&] (const char *name, | |
4098 | const name_component &elem) | |
4099 | { | |
fcf23d5b | 4100 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
4101 | const char *elem_name = elem_qualified + elem.name_offset; |
4102 | return name_cmp (name, elem_name) < 0; | |
4103 | }; | |
4104 | ||
5c58de74 PA |
4105 | auto begin = this->name_components.begin (); |
4106 | auto end = this->name_components.end (); | |
3f563c84 PA |
4107 | |
4108 | /* Find the lower bound. */ | |
4109 | auto lower = [&] () | |
4110 | { | |
3b00ef10 | 4111 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
4112 | return begin; |
4113 | else | |
3b00ef10 | 4114 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
4115 | } (); |
4116 | ||
4117 | /* Find the upper bound. */ | |
4118 | auto upper = [&] () | |
4119 | { | |
5c58de74 | 4120 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4121 | { |
e1ef7d7a PA |
4122 | /* In completion mode, we want UPPER to point past all |
4123 | symbols names that have the same prefix. I.e., with | |
4124 | these symbols, and completing "func": | |
4125 | ||
4126 | function << lower bound | |
4127 | function1 | |
4128 | other_function << upper bound | |
4129 | ||
4130 | We find the upper bound by looking for the insertion | |
4131 | point of "func"-with-last-character-incremented, | |
4132 | i.e. "fund". */ | |
3b00ef10 | 4133 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 4134 | if (after.empty ()) |
3f563c84 | 4135 | return end; |
e6b2f5ef PA |
4136 | return std::lower_bound (lower, end, after.c_str (), |
4137 | lookup_compare_lower); | |
3f563c84 PA |
4138 | } |
4139 | else | |
3b00ef10 | 4140 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4141 | } (); |
4142 | ||
5c58de74 PA |
4143 | return {lower, upper}; |
4144 | } | |
4145 | ||
4146 | /* See declaration. */ | |
4147 | ||
4148 | void | |
fcf23d5b | 4149 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
4150 | { |
4151 | if (!this->name_components.empty ()) | |
4152 | return; | |
4153 | ||
4154 | this->name_components_casing = case_sensitivity; | |
4155 | auto *name_cmp | |
4156 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4157 | ||
4158 | /* The code below only knows how to break apart components of C++ | |
4159 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4160 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4161 | auto count = this->symbol_name_count (); |
4162 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4163 | { |
44ed8f3e | 4164 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4165 | continue; |
4166 | ||
fcf23d5b | 4167 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
4168 | |
4169 | /* Add each name component to the name component table. */ | |
4170 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4171 | |
4172 | if (strstr (name, "::") != nullptr) | |
4173 | { | |
4174 | for (unsigned int current_len = cp_find_first_component (name); | |
4175 | name[current_len] != '\0'; | |
4176 | current_len += cp_find_first_component (name + current_len)) | |
4177 | { | |
4178 | gdb_assert (name[current_len] == ':'); | |
4179 | this->name_components.push_back ({previous_len, idx}); | |
4180 | /* Skip the '::'. */ | |
4181 | current_len += 2; | |
4182 | previous_len = current_len; | |
4183 | } | |
4184 | } | |
4185 | else | |
5c58de74 | 4186 | { |
3b00ef10 TT |
4187 | /* Handle the Ada encoded (aka mangled) form here. */ |
4188 | for (const char *iter = strstr (name, "__"); | |
4189 | iter != nullptr; | |
4190 | iter = strstr (iter, "__")) | |
4191 | { | |
4192 | this->name_components.push_back ({previous_len, idx}); | |
4193 | iter += 2; | |
4194 | previous_len = iter - name; | |
4195 | } | |
5c58de74 | 4196 | } |
3b00ef10 | 4197 | |
5c58de74 PA |
4198 | this->name_components.push_back ({previous_len, idx}); |
4199 | } | |
4200 | ||
4201 | /* Sort name_components elements by name. */ | |
4202 | auto name_comp_compare = [&] (const name_component &left, | |
4203 | const name_component &right) | |
4204 | { | |
fcf23d5b SM |
4205 | const char *left_qualified |
4206 | = this->symbol_name_at (left.idx, per_objfile); | |
4207 | const char *right_qualified | |
4208 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
4209 | |
4210 | const char *left_name = left_qualified + left.name_offset; | |
4211 | const char *right_name = right_qualified + right.name_offset; | |
4212 | ||
4213 | return name_cmp (left_name, right_name) < 0; | |
4214 | }; | |
4215 | ||
4216 | std::sort (this->name_components.begin (), | |
4217 | this->name_components.end (), | |
4218 | name_comp_compare); | |
4219 | } | |
4220 | ||
4221 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4222 | mapped_index_base instead of the containing objfile. This is split |
4223 | to a separate function in order to be able to unit test the | |
4224 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4225 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4226 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4227 | |
4228 | static void | |
4229 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4230 | (mapped_index_base &index, |
5c58de74 PA |
4231 | const lookup_name_info &lookup_name_in, |
4232 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4233 | enum search_domain kind, | |
fcf23d5b SM |
4234 | gdb::function_view<bool (offset_type)> match_callback, |
4235 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4236 | { |
4237 | lookup_name_info lookup_name_without_params | |
4238 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4239 | |
4240 | /* Build the symbol name component sorted vector, if we haven't | |
4241 | yet. */ | |
fcf23d5b | 4242 | index.build_name_components (per_objfile); |
5c58de74 | 4243 | |
3f563c84 PA |
4244 | /* The same symbol may appear more than once in the range though. |
4245 | E.g., if we're looking for symbols that complete "w", and we have | |
4246 | a symbol named "w1::w2", we'll find the two name components for | |
4247 | that same symbol in the range. To be sure we only call the | |
4248 | callback once per symbol, we first collect the symbol name | |
4249 | indexes that matched in a temporary vector and ignore | |
4250 | duplicates. */ | |
4251 | std::vector<offset_type> matches; | |
3f563c84 | 4252 | |
3b00ef10 TT |
4253 | struct name_and_matcher |
4254 | { | |
4255 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4256 | const char *name; |
3b00ef10 TT |
4257 | |
4258 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4259 | { |
ecc6c606 | 4260 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4261 | } |
4262 | }; | |
4263 | ||
4264 | /* A vector holding all the different symbol name matchers, for all | |
4265 | languages. */ | |
4266 | std::vector<name_and_matcher> matchers; | |
4267 | ||
4268 | for (int i = 0; i < nr_languages; i++) | |
4269 | { | |
4270 | enum language lang_e = (enum language) i; | |
4271 | ||
4272 | const language_defn *lang = language_def (lang_e); | |
4273 | symbol_name_matcher_ftype *name_matcher | |
c9debfb9 | 4274 | = lang->get_symbol_name_matcher (lookup_name_without_params); |
3f563c84 | 4275 | |
3b00ef10 | 4276 | name_and_matcher key { |
dda83cd7 | 4277 | name_matcher, |
3b00ef10 TT |
4278 | lookup_name_without_params.language_lookup_name (lang_e) |
4279 | }; | |
4280 | ||
4281 | /* Don't insert the same comparison routine more than once. | |
4282 | Note that we do this linear walk. This is not a problem in | |
4283 | practice because the number of supported languages is | |
4284 | low. */ | |
4285 | if (std::find (matchers.begin (), matchers.end (), key) | |
4286 | != matchers.end ()) | |
9291a0cd | 4287 | continue; |
3b00ef10 TT |
4288 | matchers.push_back (std::move (key)); |
4289 | ||
4290 | auto bounds | |
4291 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 4292 | lang_e, per_objfile); |
3b00ef10 TT |
4293 | |
4294 | /* Now for each symbol name in range, check to see if we have a name | |
4295 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4296 | ||
4297 | for (; bounds.first != bounds.second; ++bounds.first) | |
4298 | { | |
fcf23d5b SM |
4299 | const char *qualified |
4300 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
4301 | |
4302 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4303 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4304 | continue; | |
9291a0cd | 4305 | |
3b00ef10 TT |
4306 | matches.push_back (bounds.first->idx); |
4307 | } | |
3f563c84 PA |
4308 | } |
4309 | ||
4310 | std::sort (matches.begin (), matches.end ()); | |
4311 | ||
4312 | /* Finally call the callback, once per match. */ | |
4313 | ULONGEST prev = -1; | |
4314 | for (offset_type idx : matches) | |
4315 | { | |
4316 | if (prev != idx) | |
4317 | { | |
3b00ef10 TT |
4318 | if (!match_callback (idx)) |
4319 | break; | |
3f563c84 PA |
4320 | prev = idx; |
4321 | } | |
4322 | } | |
4323 | ||
4324 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4325 | (offset_type)-1 are both possible values. */ | |
4326 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4327 | } | |
4328 | ||
c62446b1 PA |
4329 | #if GDB_SELF_TEST |
4330 | ||
4331 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4332 | ||
a3c5fafd PA |
4333 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4334 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4335 | mapped_index_base interface. Builds an index from the symbol list | |
4336 | passed as parameter to the constructor. */ | |
4337 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4338 | { |
4339 | public: | |
a3c5fafd PA |
4340 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4341 | : m_symbol_table (symbols) | |
c62446b1 PA |
4342 | {} |
4343 | ||
a3c5fafd | 4344 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4345 | |
a3c5fafd | 4346 | /* Return the number of names in the symbol table. */ |
632e107b | 4347 | size_t symbol_name_count () const override |
c62446b1 | 4348 | { |
a3c5fafd | 4349 | return m_symbol_table.size (); |
c62446b1 PA |
4350 | } |
4351 | ||
a3c5fafd | 4352 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
4353 | const char *symbol_name_at |
4354 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
4355 | { |
4356 | return m_symbol_table[idx]; | |
4357 | } | |
c62446b1 | 4358 | |
a3c5fafd PA |
4359 | private: |
4360 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4361 | }; |
4362 | ||
4363 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4364 | string, to pass to print routines. */ | |
4365 | ||
4366 | static const char * | |
4367 | string_or_null (const char *str) | |
4368 | { | |
4369 | return str != NULL ? str : "<null>"; | |
4370 | } | |
4371 | ||
4372 | /* Check if a lookup_name_info built from | |
4373 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4374 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4375 | matching order. If no match expected, then an empty list is | |
4376 | specified. Returns true on success. On failure prints a warning | |
4377 | indicating the file:line that failed, and returns false. */ | |
4378 | ||
4379 | static bool | |
4380 | check_match (const char *file, int line, | |
4381 | mock_mapped_index &mock_index, | |
4382 | const char *name, symbol_name_match_type match_type, | |
4383 | bool completion_mode, | |
fcf23d5b SM |
4384 | std::initializer_list<const char *> expected_list, |
4385 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4386 | { |
4387 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4388 | ||
4389 | bool matched = true; | |
4390 | ||
4391 | auto mismatch = [&] (const char *expected_str, | |
4392 | const char *got) | |
4393 | { | |
4394 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4395 | "expected=\"%s\", got=\"%s\"\n"), | |
4396 | file, line, | |
4397 | (match_type == symbol_name_match_type::FULL | |
4398 | ? "FULL" : "WILD"), | |
4399 | name, string_or_null (expected_str), string_or_null (got)); | |
4400 | matched = false; | |
4401 | }; | |
4402 | ||
4403 | auto expected_it = expected_list.begin (); | |
4404 | auto expected_end = expected_list.end (); | |
4405 | ||
a3c5fafd | 4406 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4407 | NULL, ALL_DOMAIN, |
4408 | [&] (offset_type idx) | |
4409 | { | |
fcf23d5b | 4410 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4411 | const char *expected_str |
4412 | = expected_it == expected_end ? NULL : *expected_it++; | |
4413 | ||
4414 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4415 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4416 | return true; |
fcf23d5b | 4417 | }, per_objfile); |
c62446b1 PA |
4418 | |
4419 | const char *expected_str | |
4420 | = expected_it == expected_end ? NULL : *expected_it++; | |
4421 | if (expected_str != NULL) | |
4422 | mismatch (expected_str, NULL); | |
4423 | ||
4424 | return matched; | |
4425 | } | |
4426 | ||
4427 | /* The symbols added to the mock mapped_index for testing (in | |
4428 | canonical form). */ | |
4429 | static const char *test_symbols[] = { | |
4430 | "function", | |
4431 | "std::bar", | |
4432 | "std::zfunction", | |
4433 | "std::zfunction2", | |
4434 | "w1::w2", | |
4435 | "ns::foo<char*>", | |
4436 | "ns::foo<int>", | |
4437 | "ns::foo<long>", | |
a20714ff PA |
4438 | "ns2::tmpl<int>::foo2", |
4439 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4440 | |
e1ef7d7a PA |
4441 | /* These are used to check that the increment-last-char in the |
4442 | matching algorithm for completion doesn't match "t1_fund" when | |
4443 | completing "t1_func". */ | |
4444 | "t1_func", | |
4445 | "t1_func1", | |
4446 | "t1_fund", | |
4447 | "t1_fund1", | |
4448 | ||
4449 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4450 | cp-name-parser understands this as a single identifier ("função" | |
4451 | is "function" in PT). */ | |
4452 | u8"u8função", | |
4453 | ||
4454 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4455 | "yfunc\377", | |
4456 | ||
4457 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4458 | "\377", | |
4459 | "\377\377123", | |
4460 | ||
c62446b1 PA |
4461 | /* A name with all sorts of complications. Starts with "z" to make |
4462 | it easier for the completion tests below. */ | |
4463 | #define Z_SYM_NAME \ | |
4464 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4465 | "::tuple<(anonymous namespace)::ui*, " \ | |
4466 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4467 | ||
4468 | Z_SYM_NAME | |
4469 | }; | |
4470 | ||
a3c5fafd PA |
4471 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4472 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4473 | in completion mode. */ | |
5c58de74 PA |
4474 | |
4475 | static bool | |
a3c5fafd | 4476 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4477 | const char *search_name, |
fcf23d5b SM |
4478 | gdb::array_view<const char *> expected_syms, |
4479 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4480 | { |
4481 | lookup_name_info lookup_name (search_name, | |
4482 | symbol_name_match_type::FULL, true); | |
4483 | ||
3b00ef10 | 4484 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4485 | language_cplus, |
4486 | per_objfile); | |
5c58de74 PA |
4487 | |
4488 | size_t distance = std::distance (bounds.first, bounds.second); | |
4489 | if (distance != expected_syms.size ()) | |
4490 | return false; | |
4491 | ||
4492 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4493 | { | |
4494 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4495 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4496 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4497 | return false; | |
4498 | } | |
4499 | ||
4500 | return true; | |
4501 | } | |
4502 | ||
4503 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4504 | method. */ | |
4505 | ||
c62446b1 | 4506 | static void |
5c58de74 PA |
4507 | test_mapped_index_find_name_component_bounds () |
4508 | { | |
4509 | mock_mapped_index mock_index (test_symbols); | |
4510 | ||
fcf23d5b | 4511 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4512 | |
4513 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4514 | method in completion mode. */ | |
4515 | { | |
4516 | static const char *expected_syms[] = { | |
4517 | "t1_func", | |
4518 | "t1_func1", | |
5c58de74 PA |
4519 | }; |
4520 | ||
fcf23d5b SM |
4521 | SELF_CHECK (check_find_bounds_finds |
4522 | (mock_index, "t1_func", expected_syms, | |
4523 | NULL /* per_objfile */)); | |
5c58de74 PA |
4524 | } |
4525 | ||
4526 | /* Check that the increment-last-char in the name matching algorithm | |
4527 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4528 | { | |
4529 | static const char *expected_syms1[] = { | |
4530 | "\377", | |
4531 | "\377\377123", | |
4532 | }; | |
fcf23d5b SM |
4533 | SELF_CHECK (check_find_bounds_finds |
4534 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4535 | |
4536 | static const char *expected_syms2[] = { | |
4537 | "\377\377123", | |
4538 | }; | |
fcf23d5b SM |
4539 | SELF_CHECK (check_find_bounds_finds |
4540 | (mock_index, "\377\377", expected_syms2, | |
4541 | NULL /* per_objfile */)); | |
5c58de74 PA |
4542 | } |
4543 | } | |
4544 | ||
4545 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4546 | ||
4547 | static void | |
4548 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4549 | { |
4550 | mock_mapped_index mock_index (test_symbols); | |
4551 | ||
4552 | /* We let all tests run until the end even if some fails, for debug | |
4553 | convenience. */ | |
4554 | bool any_mismatch = false; | |
4555 | ||
4556 | /* Create the expected symbols list (an initializer_list). Needed | |
4557 | because lists have commas, and we need to pass them to CHECK, | |
4558 | which is a macro. */ | |
4559 | #define EXPECT(...) { __VA_ARGS__ } | |
4560 | ||
4561 | /* Wrapper for check_match that passes down the current | |
4562 | __FILE__/__LINE__. */ | |
4563 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4564 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4565 | mock_index, \ | |
4566 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4567 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4568 | |
4569 | /* Identity checks. */ | |
4570 | for (const char *sym : test_symbols) | |
4571 | { | |
4572 | /* Should be able to match all existing symbols. */ | |
4573 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4574 | EXPECT (sym)); | |
4575 | ||
4576 | /* Should be able to match all existing symbols with | |
4577 | parameters. */ | |
4578 | std::string with_params = std::string (sym) + "(int)"; | |
4579 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4580 | EXPECT (sym)); | |
4581 | ||
4582 | /* Should be able to match all existing symbols with | |
4583 | parameters and qualifiers. */ | |
4584 | with_params = std::string (sym) + " ( int ) const"; | |
4585 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4586 | EXPECT (sym)); | |
4587 | ||
4588 | /* This should really find sym, but cp-name-parser.y doesn't | |
4589 | know about lvalue/rvalue qualifiers yet. */ | |
4590 | with_params = std::string (sym) + " ( int ) &&"; | |
4591 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4592 | {}); | |
4593 | } | |
4594 | ||
e1ef7d7a PA |
4595 | /* Check that the name matching algorithm for completion doesn't get |
4596 | confused with Latin1 'ÿ' / 0xff. */ | |
4597 | { | |
4598 | static const char str[] = "\377"; | |
4599 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4600 | EXPECT ("\377", "\377\377123")); | |
4601 | } | |
4602 | ||
4603 | /* Check that the increment-last-char in the matching algorithm for | |
4604 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4605 | { | |
4606 | static const char str[] = "t1_func"; | |
4607 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4608 | EXPECT ("t1_func", "t1_func1")); | |
4609 | } | |
4610 | ||
c62446b1 PA |
4611 | /* Check that completion mode works at each prefix of the expected |
4612 | symbol name. */ | |
4613 | { | |
4614 | static const char str[] = "function(int)"; | |
4615 | size_t len = strlen (str); | |
4616 | std::string lookup; | |
4617 | ||
4618 | for (size_t i = 1; i < len; i++) | |
4619 | { | |
4620 | lookup.assign (str, i); | |
4621 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4622 | EXPECT ("function")); | |
4623 | } | |
4624 | } | |
4625 | ||
4626 | /* While "w" is a prefix of both components, the match function | |
4627 | should still only be called once. */ | |
4628 | { | |
4629 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4630 | EXPECT ("w1::w2")); | |
a20714ff PA |
4631 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4632 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4633 | } |
4634 | ||
4635 | /* Same, with a "complicated" symbol. */ | |
4636 | { | |
4637 | static const char str[] = Z_SYM_NAME; | |
4638 | size_t len = strlen (str); | |
4639 | std::string lookup; | |
4640 | ||
4641 | for (size_t i = 1; i < len; i++) | |
4642 | { | |
4643 | lookup.assign (str, i); | |
4644 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4645 | EXPECT (Z_SYM_NAME)); | |
4646 | } | |
4647 | } | |
4648 | ||
4649 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4650 | { | |
4651 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4652 | {}); | |
4653 | } | |
4654 | ||
4655 | /* A complete symbol with parameters matches any overload, since the | |
4656 | index has no overload info. */ | |
4657 | { | |
4658 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4659 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4660 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4661 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4662 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4663 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4664 | } |
4665 | ||
4666 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4667 | template argument list. */ | |
4668 | { | |
4669 | static const char expected[] = "ns::foo<int>"; | |
4670 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4671 | EXPECT (expected)); | |
a20714ff PA |
4672 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4673 | EXPECT (expected)); | |
c62446b1 PA |
4674 | } |
4675 | ||
4676 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4677 | template argument list that includes a pointer. */ | |
4678 | { | |
4679 | static const char expected[] = "ns::foo<char*>"; | |
4680 | /* Try both completion and non-completion modes. */ | |
4681 | static const bool completion_mode[2] = {false, true}; | |
4682 | for (size_t i = 0; i < 2; i++) | |
4683 | { | |
4684 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4685 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4686 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4687 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4688 | |
4689 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4690 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4691 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4692 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4693 | } |
4694 | } | |
4695 | ||
4696 | { | |
4697 | /* Check method qualifiers are ignored. */ | |
4698 | static const char expected[] = "ns::foo<char*>"; | |
4699 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4700 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4701 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4702 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4703 | CHECK_MATCH ("foo < char * > ( int ) const", |
4704 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4705 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4706 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4707 | } |
4708 | ||
4709 | /* Test lookup names that don't match anything. */ | |
4710 | { | |
a20714ff PA |
4711 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4712 | {}); | |
4713 | ||
c62446b1 PA |
4714 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4715 | {}); | |
4716 | } | |
4717 | ||
a20714ff PA |
4718 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4719 | which should not be confused with a parameter list. */ | |
4720 | { | |
4721 | static const char *syms[] = { | |
4722 | "A::B::C", | |
4723 | "B::C", | |
4724 | "C", | |
4725 | "A :: B :: C ( int )", | |
4726 | "B :: C ( int )", | |
4727 | "C ( int )", | |
4728 | }; | |
4729 | ||
4730 | for (const char *s : syms) | |
4731 | { | |
4732 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4733 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4734 | } | |
4735 | } | |
4736 | ||
4737 | { | |
4738 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4739 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4740 | EXPECT (expected)); | |
4741 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4742 | EXPECT (expected)); | |
4743 | } | |
4744 | ||
c62446b1 PA |
4745 | SELF_CHECK (!any_mismatch); |
4746 | ||
4747 | #undef EXPECT | |
4748 | #undef CHECK_MATCH | |
4749 | } | |
4750 | ||
5c58de74 PA |
4751 | static void |
4752 | run_test () | |
4753 | { | |
4754 | test_mapped_index_find_name_component_bounds (); | |
4755 | test_dw2_expand_symtabs_matching_symbol (); | |
4756 | } | |
4757 | ||
c62446b1 PA |
4758 | }} // namespace selftests::dw2_expand_symtabs_matching |
4759 | ||
4760 | #endif /* GDB_SELF_TEST */ | |
4761 | ||
4b514bc8 JK |
4762 | /* If FILE_MATCHER is NULL or if PER_CU has |
4763 | dwarf2_per_cu_quick_data::MARK set (see | |
4764 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4765 | EXPANSION_NOTIFY on it. */ | |
4766 | ||
4767 | static void | |
4768 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4769 | (dwarf2_per_cu_data *per_cu, |
4770 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4771 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4772 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4773 | { | |
4774 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4775 | { | |
af758d11 | 4776 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4777 | |
97a1449a SM |
4778 | compunit_symtab *symtab |
4779 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4780 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4781 | |
af758d11 SM |
4782 | if (expansion_notify != NULL && symtab_was_null) |
4783 | expansion_notify (symtab); | |
4b514bc8 JK |
4784 | } |
4785 | } | |
4786 | ||
3f563c84 PA |
4787 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4788 | matched, to expand corresponding CUs that were marked. IDX is the | |
4789 | index of the symbol name that matched. */ | |
4790 | ||
4791 | static void | |
4792 | dw2_expand_marked_cus | |
976ca316 | 4793 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4794 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4795 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4796 | search_domain kind) | |
4797 | { | |
3f563c84 PA |
4798 | offset_type *vec, vec_len, vec_idx; |
4799 | bool global_seen = false; | |
976ca316 | 4800 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4801 | |
61920122 | 4802 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4803 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4804 | vec_len = MAYBE_SWAP (vec[0]); |
4805 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4806 | { | |
61920122 PA |
4807 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4808 | /* This value is only valid for index versions >= 7. */ | |
4809 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4810 | gdb_index_symbol_kind symbol_kind = | |
4811 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4812 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4813 | /* Only check the symbol attributes if they're present. | |
4814 | Indices prior to version 7 don't record them, | |
4815 | and indices >= 7 may elide them for certain symbols | |
4816 | (gold does this). */ | |
4817 | int attrs_valid = | |
4818 | (index.version >= 7 | |
4819 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4820 | ||
4821 | /* Work around gold/15646. */ | |
f030440d TV |
4822 | if (attrs_valid |
4823 | && !is_static | |
4824 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4825 | { |
f030440d | 4826 | if (global_seen) |
61920122 | 4827 | continue; |
f030440d TV |
4828 | |
4829 | global_seen = true; | |
61920122 | 4830 | } |
3190f0c6 | 4831 | |
61920122 PA |
4832 | /* Only check the symbol's kind if it has one. */ |
4833 | if (attrs_valid) | |
4834 | { | |
4835 | switch (kind) | |
8943b874 | 4836 | { |
61920122 PA |
4837 | case VARIABLES_DOMAIN: |
4838 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4839 | continue; | |
4840 | break; | |
4841 | case FUNCTIONS_DOMAIN: | |
4842 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4843 | continue; |
61920122 PA |
4844 | break; |
4845 | case TYPES_DOMAIN: | |
4846 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4847 | continue; | |
4848 | break; | |
59c35742 AB |
4849 | case MODULES_DOMAIN: |
4850 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4851 | continue; | |
4852 | break; | |
61920122 PA |
4853 | default: |
4854 | break; | |
8943b874 | 4855 | } |
61920122 | 4856 | } |
8943b874 | 4857 | |
61920122 | 4858 | /* Don't crash on bad data. */ |
976ca316 SM |
4859 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
4860 | + per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4861 | { |
b98664d3 | 4862 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4863 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4864 | continue; |
4865 | } | |
4866 | ||
976ca316 SM |
4867 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
4868 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, | |
4b514bc8 | 4869 | expansion_notify); |
61920122 PA |
4870 | } |
4871 | } | |
4872 | ||
4b514bc8 JK |
4873 | /* If FILE_MATCHER is non-NULL, set all the |
4874 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4875 | that match FILE_MATCHER. */ | |
4876 | ||
61920122 | 4877 | static void |
4b514bc8 | 4878 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4879 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4880 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4881 | { |
4b514bc8 | 4882 | if (file_matcher == NULL) |
61920122 PA |
4883 | return; |
4884 | ||
4b514bc8 JK |
4885 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4886 | htab_eq_pointer, | |
4887 | NULL, xcalloc, xfree)); | |
4888 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4889 | htab_eq_pointer, |
4890 | NULL, xcalloc, xfree)); | |
61920122 | 4891 | |
4b514bc8 JK |
4892 | /* The rule is CUs specify all the files, including those used by |
4893 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4894 | |
976ca316 | 4895 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4896 | { |
927aa2e7 JK |
4897 | QUIT; |
4898 | ||
4899 | per_cu->v.quick->mark = 0; | |
4900 | ||
4901 | /* We only need to look at symtabs not already expanded. */ | |
976ca316 | 4902 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4903 | continue; |
4904 | ||
976ca316 | 4905 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4906 | if (file_data == NULL) |
4907 | continue; | |
4908 | ||
4909 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4910 | continue; | |
4911 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4912 | { | |
4913 | per_cu->v.quick->mark = 1; | |
4914 | continue; | |
4915 | } | |
4916 | ||
b76e467d | 4917 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4918 | { |
4919 | const char *this_real_name; | |
4920 | ||
4921 | if (file_matcher (file_data->file_names[j], false)) | |
4922 | { | |
4923 | per_cu->v.quick->mark = 1; | |
4924 | break; | |
4925 | } | |
4926 | ||
4927 | /* Before we invoke realpath, which can get expensive when many | |
4928 | files are involved, do a quick comparison of the basenames. */ | |
4929 | if (!basenames_may_differ | |
4930 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4931 | true)) | |
4932 | continue; | |
4933 | ||
976ca316 | 4934 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4935 | if (file_matcher (this_real_name, false)) |
4936 | { | |
4937 | per_cu->v.quick->mark = 1; | |
4938 | break; | |
4939 | } | |
4940 | } | |
4941 | ||
b76e467d SM |
4942 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4943 | ? visited_found.get () | |
4944 | : visited_not_found.get (), | |
4945 | file_data, INSERT); | |
927aa2e7 JK |
4946 | *slot = file_data; |
4947 | } | |
4948 | } | |
4949 | ||
4950 | static void | |
4951 | dw2_expand_symtabs_matching | |
4952 | (struct objfile *objfile, | |
4953 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4954 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4955 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4956 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4957 | enum search_domain kind) | |
4958 | { | |
976ca316 | 4959 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4960 | |
4961 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4962 | if (!per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4963 | return; |
4964 | ||
976ca316 | 4965 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4966 | |
c1a66c06 TV |
4967 | if (symbol_matcher == NULL && lookup_name == NULL) |
4968 | { | |
976ca316 | 4969 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4970 | { |
4971 | QUIT; | |
4972 | ||
976ca316 | 4973 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
97a1449a | 4974 | file_matcher, expansion_notify); |
c1a66c06 TV |
4975 | } |
4976 | return; | |
4977 | } | |
4978 | ||
976ca316 | 4979 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4980 | |
c1a66c06 | 4981 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4982 | symbol_matcher, |
4983 | kind, [&] (offset_type idx) | |
4984 | { | |
976ca316 SM |
4985 | dw2_expand_marked_cus (per_objfile, idx, file_matcher, expansion_notify, |
4986 | kind); | |
3b00ef10 | 4987 | return true; |
976ca316 | 4988 | }, per_objfile); |
927aa2e7 JK |
4989 | } |
4990 | ||
4991 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4992 | symtab. */ | |
4993 | ||
4994 | static struct compunit_symtab * | |
4995 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4996 | CORE_ADDR pc) | |
4997 | { | |
4998 | int i; | |
4999 | ||
5000 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5001 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5002 | return cust; | |
5003 | ||
5004 | if (cust->includes == NULL) | |
5005 | return NULL; | |
5006 | ||
5007 | for (i = 0; cust->includes[i]; ++i) | |
5008 | { | |
5009 | struct compunit_symtab *s = cust->includes[i]; | |
5010 | ||
5011 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5012 | if (s != NULL) | |
5013 | return s; | |
5014 | } | |
5015 | ||
5016 | return NULL; | |
5017 | } | |
5018 | ||
5019 | static struct compunit_symtab * | |
5020 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5021 | struct bound_minimal_symbol msymbol, | |
5022 | CORE_ADDR pc, | |
5023 | struct obj_section *section, | |
5024 | int warn_if_readin) | |
5025 | { | |
5026 | struct dwarf2_per_cu_data *data; | |
5027 | struct compunit_symtab *result; | |
5028 | ||
d320c2b5 | 5029 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
5030 | return NULL; |
5031 | ||
b3b3bada | 5032 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
5033 | data = (struct dwarf2_per_cu_data *) addrmap_find |
5034 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
5035 | if (!data) |
5036 | return NULL; | |
5037 | ||
af758d11 SM |
5038 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
5039 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 5040 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 5041 | paddress (objfile->arch (), pc)); |
927aa2e7 | 5042 | |
97a1449a SM |
5043 | result = recursively_find_pc_sect_compunit_symtab |
5044 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
5045 | ||
927aa2e7 JK |
5046 | gdb_assert (result != NULL); |
5047 | return result; | |
5048 | } | |
5049 | ||
5050 | static void | |
5051 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5052 | void *data, int need_fullname) | |
5053 | { | |
976ca316 | 5054 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 5055 | |
976ca316 | 5056 | if (!per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 5057 | { |
976ca316 | 5058 | per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
5059 | |
5060 | htab_up visited (htab_create_alloc (10, | |
5061 | htab_hash_pointer, htab_eq_pointer, | |
5062 | NULL, xcalloc, xfree)); | |
5063 | ||
5064 | /* The rule is CUs specify all the files, including those used | |
5065 | by any TU, so there's no need to scan TUs here. We can | |
5066 | ignore file names coming from already-expanded CUs. */ | |
5067 | ||
976ca316 | 5068 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 5069 | { |
976ca316 | 5070 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5071 | { |
5072 | void **slot = htab_find_slot (visited.get (), | |
5073 | per_cu->v.quick->file_names, | |
5074 | INSERT); | |
5075 | ||
5076 | *slot = per_cu->v.quick->file_names; | |
5077 | } | |
5078 | } | |
5079 | ||
976ca316 | 5080 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 5081 | { |
927aa2e7 | 5082 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 5083 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5084 | continue; |
5085 | ||
ab432490 | 5086 | quick_file_names *file_data |
976ca316 | 5087 | = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
5088 | if (file_data == NULL) |
5089 | continue; | |
5090 | ||
b76e467d | 5091 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5092 | if (*slot) |
5093 | { | |
5094 | /* Already visited. */ | |
5095 | continue; | |
5096 | } | |
5097 | *slot = file_data; | |
5098 | ||
5099 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5100 | { | |
5101 | const char *filename = file_data->file_names[j]; | |
976ca316 | 5102 | per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
5103 | } |
5104 | } | |
5105 | } | |
5106 | ||
976ca316 | 5107 | per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
5108 | { |
5109 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5110 | ||
5111 | if (need_fullname) | |
5112 | this_real_name = gdb_realpath (filename); | |
5113 | (*fun) (filename, this_real_name.get (), data); | |
5114 | }); | |
5115 | } | |
5116 | ||
5117 | static int | |
5118 | dw2_has_symbols (struct objfile *objfile) | |
5119 | { | |
5120 | return 1; | |
5121 | } | |
5122 | ||
5123 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5124 | { | |
5125 | dw2_has_symbols, | |
5126 | dw2_find_last_source_symtab, | |
5127 | dw2_forget_cached_source_info, | |
5128 | dw2_map_symtabs_matching_filename, | |
5129 | dw2_lookup_symbol, | |
d3214198 | 5130 | NULL, |
927aa2e7 JK |
5131 | dw2_print_stats, |
5132 | dw2_dump, | |
927aa2e7 JK |
5133 | dw2_expand_symtabs_for_function, |
5134 | dw2_expand_all_symtabs, | |
5135 | dw2_expand_symtabs_with_fullname, | |
5136 | dw2_map_matching_symbols, | |
5137 | dw2_expand_symtabs_matching, | |
5138 | dw2_find_pc_sect_compunit_symtab, | |
5139 | NULL, | |
5140 | dw2_map_symbol_filenames | |
5141 | }; | |
5142 | ||
5143 | /* DWARF-5 debug_names reader. */ | |
5144 | ||
5145 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5146 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5147 | ||
5148 | /* A helper function that reads the .debug_names section in SECTION | |
5149 | and fills in MAP. FILENAME is the name of the file containing the | |
5150 | section; it is used for error reporting. | |
5151 | ||
5152 | Returns true if all went well, false otherwise. */ | |
5153 | ||
5154 | static bool | |
5155 | read_debug_names_from_section (struct objfile *objfile, | |
5156 | const char *filename, | |
5157 | struct dwarf2_section_info *section, | |
5158 | mapped_debug_names &map) | |
5159 | { | |
96b79293 | 5160 | if (section->empty ()) |
927aa2e7 JK |
5161 | return false; |
5162 | ||
5163 | /* Older elfutils strip versions could keep the section in the main | |
5164 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5165 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
5166 | return false; |
5167 | ||
96b79293 | 5168 | section->read (objfile); |
927aa2e7 | 5169 | |
08feed99 | 5170 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
5171 | |
5172 | const gdb_byte *addr = section->buffer; | |
5173 | ||
96b79293 | 5174 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
5175 | |
5176 | unsigned int bytes_read; | |
5177 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5178 | addr += bytes_read; | |
5179 | ||
5180 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5181 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5182 | if (bytes_read + length != section->size) | |
5183 | { | |
5184 | /* There may be multiple per-CU indices. */ | |
5185 | warning (_("Section .debug_names in %s length %s does not match " | |
5186 | "section length %s, ignoring .debug_names."), | |
5187 | filename, plongest (bytes_read + length), | |
5188 | pulongest (section->size)); | |
5189 | return false; | |
5190 | } | |
5191 | ||
5192 | /* The version number. */ | |
5193 | uint16_t version = read_2_bytes (abfd, addr); | |
5194 | addr += 2; | |
5195 | if (version != 5) | |
5196 | { | |
5197 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5198 | "ignoring .debug_names."), | |
5199 | filename, version); | |
5200 | return false; | |
5201 | } | |
5202 | ||
5203 | /* Padding. */ | |
5204 | uint16_t padding = read_2_bytes (abfd, addr); | |
5205 | addr += 2; | |
5206 | if (padding != 0) | |
5207 | { | |
5208 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5209 | "ignoring .debug_names."), | |
5210 | filename, padding); | |
5211 | return false; | |
5212 | } | |
5213 | ||
5214 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5215 | map.cu_count = read_4_bytes (abfd, addr); | |
5216 | addr += 4; | |
5217 | ||
5218 | /* local_type_unit_count - The number of TUs in the local TU | |
5219 | list. */ | |
5220 | map.tu_count = read_4_bytes (abfd, addr); | |
5221 | addr += 4; | |
5222 | ||
5223 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5224 | list. */ | |
5225 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5226 | addr += 4; | |
5227 | if (foreign_tu_count != 0) | |
5228 | { | |
5229 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5230 | "ignoring .debug_names."), | |
5231 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5232 | return false; | |
5233 | } | |
5234 | ||
5235 | /* bucket_count - The number of hash buckets in the hash lookup | |
5236 | table. */ | |
5237 | map.bucket_count = read_4_bytes (abfd, addr); | |
5238 | addr += 4; | |
5239 | ||
5240 | /* name_count - The number of unique names in the index. */ | |
5241 | map.name_count = read_4_bytes (abfd, addr); | |
5242 | addr += 4; | |
5243 | ||
5244 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5245 | table. */ | |
5246 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5247 | addr += 4; | |
5248 | ||
5249 | /* augmentation_string_size - The size in bytes of the augmentation | |
5250 | string. This value is rounded up to a multiple of 4. */ | |
5251 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5252 | addr += 4; | |
5253 | map.augmentation_is_gdb = ((augmentation_string_size | |
5254 | == sizeof (dwarf5_augmentation)) | |
5255 | && memcmp (addr, dwarf5_augmentation, | |
5256 | sizeof (dwarf5_augmentation)) == 0); | |
5257 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5258 | addr += augmentation_string_size; | |
5259 | ||
5260 | /* List of CUs */ | |
5261 | map.cu_table_reordered = addr; | |
5262 | addr += map.cu_count * map.offset_size; | |
5263 | ||
5264 | /* List of Local TUs */ | |
5265 | map.tu_table_reordered = addr; | |
5266 | addr += map.tu_count * map.offset_size; | |
5267 | ||
5268 | /* Hash Lookup Table */ | |
5269 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5270 | addr += map.bucket_count * 4; | |
5271 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5272 | addr += map.name_count * 4; | |
5273 | ||
5274 | /* Name Table */ | |
5275 | map.name_table_string_offs_reordered = addr; | |
5276 | addr += map.name_count * map.offset_size; | |
5277 | map.name_table_entry_offs_reordered = addr; | |
5278 | addr += map.name_count * map.offset_size; | |
5279 | ||
5280 | const gdb_byte *abbrev_table_start = addr; | |
5281 | for (;;) | |
5282 | { | |
927aa2e7 JK |
5283 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5284 | addr += bytes_read; | |
5285 | if (index_num == 0) | |
5286 | break; | |
5287 | ||
5288 | const auto insertpair | |
5289 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5290 | if (!insertpair.second) | |
5291 | { | |
5292 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5293 | "ignoring .debug_names."), | |
5294 | filename, pulongest (index_num)); | |
5295 | return false; | |
5296 | } | |
5297 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5298 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5299 | addr += bytes_read; | |
5300 | ||
5301 | for (;;) | |
5302 | { | |
5303 | mapped_debug_names::index_val::attr attr; | |
5304 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5305 | addr += bytes_read; | |
5306 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5307 | addr += bytes_read; | |
5308 | if (attr.form == DW_FORM_implicit_const) | |
5309 | { | |
5310 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5311 | &bytes_read); | |
5312 | addr += bytes_read; | |
5313 | } | |
5314 | if (attr.dw_idx == 0 && attr.form == 0) | |
5315 | break; | |
5316 | indexval.attr_vec.push_back (std::move (attr)); | |
5317 | } | |
5318 | } | |
5319 | if (addr != abbrev_table_start + abbrev_table_size) | |
5320 | { | |
5321 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5322 | "of size %s vs. written as %u, ignoring .debug_names."), |
5323 | filename, plongest (addr - abbrev_table_start), | |
5324 | abbrev_table_size); | |
927aa2e7 JK |
5325 | return false; |
5326 | } | |
5327 | map.entry_pool = addr; | |
5328 | ||
5329 | return true; | |
5330 | } | |
5331 | ||
5332 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5333 | list. */ | |
5334 | ||
5335 | static void | |
168c9250 | 5336 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5337 | const mapped_debug_names &map, |
5338 | dwarf2_section_info §ion, | |
b76e467d | 5339 | bool is_dwz) |
927aa2e7 | 5340 | { |
3ee6bb11 TV |
5341 | if (!map.augmentation_is_gdb) |
5342 | { | |
fc9a13fb TV |
5343 | for (uint32_t i = 0; i < map.cu_count; ++i) |
5344 | { | |
5345 | sect_offset sect_off | |
5346 | = (sect_offset) (extract_unsigned_integer | |
5347 | (map.cu_table_reordered + i * map.offset_size, | |
5348 | map.offset_size, | |
5349 | map.dwarf5_byte_order)); | |
5350 | /* We don't know the length of the CU, because the CU list in a | |
5351 | .debug_names index can be incomplete, so we can't use the start | |
5352 | of the next CU as end of this CU. We create the CUs here with | |
5353 | length 0, and in cutu_reader::cutu_reader we'll fill in the | |
5354 | actual length. */ | |
5355 | dwarf2_per_cu_data *per_cu | |
5356 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, | |
5357 | sect_off, 0); | |
5358 | per_bfd->all_comp_units.push_back (per_cu); | |
5359 | } | |
d3b54e63 | 5360 | return; |
3ee6bb11 TV |
5361 | } |
5362 | ||
927aa2e7 JK |
5363 | sect_offset sect_off_prev; |
5364 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5365 | { | |
5366 | sect_offset sect_off_next; | |
5367 | if (i < map.cu_count) | |
5368 | { | |
5369 | sect_off_next | |
5370 | = (sect_offset) (extract_unsigned_integer | |
5371 | (map.cu_table_reordered + i * map.offset_size, | |
5372 | map.offset_size, | |
5373 | map.dwarf5_byte_order)); | |
5374 | } | |
5375 | else | |
5376 | sect_off_next = (sect_offset) section.size; | |
5377 | if (i >= 1) | |
5378 | { | |
5379 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5380 | dwarf2_per_cu_data *per_cu |
168c9250 | 5381 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5382 | sect_off_prev, length); |
168c9250 | 5383 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5384 | } |
5385 | sect_off_prev = sect_off_next; | |
5386 | } | |
5387 | } | |
5388 | ||
5389 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5390 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5391 | |
5392 | static void | |
168c9250 | 5393 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5394 | const mapped_debug_names &map, |
5395 | const mapped_debug_names &dwz_map) | |
5396 | { | |
168c9250 SM |
5397 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5398 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5399 | |
168c9250 | 5400 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5401 | false /* is_dwz */); |
927aa2e7 JK |
5402 | |
5403 | if (dwz_map.cu_count == 0) | |
5404 | return; | |
5405 | ||
168c9250 SM |
5406 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5407 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5408 | true /* is_dwz */); |
927aa2e7 JK |
5409 | } |
5410 | ||
5411 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5412 | elements of all the CUs and return true. Otherwise, return false. */ | |
5413 | ||
5414 | static bool | |
976ca316 | 5415 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 5416 | { |
fcf23d5b SM |
5417 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5418 | mapped_debug_names dwz_map; | |
976ca316 | 5419 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 5420 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
5421 | |
5422 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
976ca316 | 5423 | &per_objfile->per_bfd->debug_names, *map)) |
927aa2e7 JK |
5424 | return false; |
5425 | ||
5426 | /* Don't use the index if it's empty. */ | |
22ca247e | 5427 | if (map->name_count == 0) |
927aa2e7 JK |
5428 | return false; |
5429 | ||
5430 | /* If there is a .dwz file, read it so we can get its CU list as | |
5431 | well. */ | |
f8c41851 | 5432 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5433 | if (dwz != NULL) |
5434 | { | |
5435 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5436 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5437 | &dwz->debug_names, dwz_map)) |
5438 | { | |
5439 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5440 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5441 | return false; |
5442 | } | |
5443 | } | |
5444 | ||
f8c41851 | 5445 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5446 | |
22ca247e | 5447 | if (map->tu_count != 0) |
927aa2e7 JK |
5448 | { |
5449 | /* We can only handle a single .debug_types when we have an | |
5450 | index. */ | |
f8c41851 | 5451 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5452 | return false; |
5453 | ||
f8c41851 | 5454 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5455 | |
5456 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5457 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5458 | } |
5459 | ||
f8c41851 | 5460 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5461 | |
f8c41851 SM |
5462 | per_bfd->debug_names_table = std::move (map); |
5463 | per_bfd->using_index = 1; | |
5464 | per_bfd->quick_file_names_table = | |
976ca316 | 5465 | create_quick_file_names_table (per_objfile->per_bfd->all_comp_units.size ()); |
927aa2e7 | 5466 | |
f8c41851 SM |
5467 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent |
5468 | objfiles using the same BFD. */ | |
5469 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
5470 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
5471 | ||
927aa2e7 JK |
5472 | return true; |
5473 | } | |
5474 | ||
927aa2e7 JK |
5475 | /* Type used to manage iterating over all CUs looking for a symbol for |
5476 | .debug_names. */ | |
5477 | ||
5478 | class dw2_debug_names_iterator | |
5479 | { | |
5480 | public: | |
927aa2e7 | 5481 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5482 | gdb::optional<block_enum> block_index, |
5483 | domain_enum domain, | |
fcf23d5b | 5484 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5485 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5486 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5487 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5488 | {} |
5489 | ||
5490 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
fcf23d5b | 5491 | search_domain search, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5492 | : m_map (map), |
5493 | m_search (search), | |
fcf23d5b SM |
5494 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5495 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5496 | {} |
5497 | ||
3b00ef10 TT |
5498 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5499 | block_enum block_index, domain_enum domain, | |
fcf23d5b | 5500 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5501 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5502 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5503 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5504 | {} |
5505 | ||
927aa2e7 JK |
5506 | /* Return the next matching CU or NULL if there are no more. */ |
5507 | dwarf2_per_cu_data *next (); | |
5508 | ||
5509 | private: | |
5510 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5511 | const char *name, |
5512 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5513 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5514 | uint32_t namei, |
5515 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5516 | |
5517 | /* The internalized form of .debug_names. */ | |
5518 | const mapped_debug_names &m_map; | |
5519 | ||
2b79f376 SM |
5520 | /* If set, only look for symbols that match that block. Valid values are |
5521 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5522 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5523 | |
5524 | /* The kind of symbol we're looking for. */ | |
5525 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5526 | const search_domain m_search = ALL_DOMAIN; | |
5527 | ||
5528 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5529 | not found. */ | |
5530 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5531 | |
5532 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5533 | }; |
5534 | ||
5535 | const char * | |
fcf23d5b | 5536 | mapped_debug_names::namei_to_name |
976ca316 | 5537 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5538 | { |
5539 | const ULONGEST namei_string_offs | |
5540 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5541 | + namei * offset_size), | |
5542 | offset_size, | |
5543 | dwarf5_byte_order); | |
976ca316 | 5544 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5545 | } |
5546 | ||
5547 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5548 | found, return pointer to its pool data. If NAME cannot be found, | |
5549 | return NULL. */ | |
5550 | ||
5551 | const gdb_byte * | |
5552 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5553 | (const mapped_debug_names &map, const char *name, |
5554 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5555 | { |
5556 | int (*cmp) (const char *, const char *); | |
5557 | ||
54ee4252 | 5558 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5559 | if (current_language->la_language == language_cplus |
5560 | || current_language->la_language == language_fortran | |
5561 | || current_language->la_language == language_d) | |
5562 | { | |
5563 | /* NAME is already canonical. Drop any qualifiers as | |
5564 | .debug_names does not contain any. */ | |
5565 | ||
5566 | if (strchr (name, '(') != NULL) | |
5567 | { | |
54ee4252 | 5568 | without_params = cp_remove_params (name); |
927aa2e7 | 5569 | if (without_params != NULL) |
54ee4252 | 5570 | name = without_params.get (); |
927aa2e7 JK |
5571 | } |
5572 | } | |
5573 | ||
5574 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5575 | ||
5576 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5577 | uint32_t namei | |
5578 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5579 | (map.bucket_table_reordered | |
5580 | + (full_hash % map.bucket_count)), 4, | |
5581 | map.dwarf5_byte_order); | |
5582 | if (namei == 0) | |
5583 | return NULL; | |
5584 | --namei; | |
5585 | if (namei >= map.name_count) | |
5586 | { | |
b98664d3 | 5587 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5588 | "[in module %s]"), |
5589 | namei, map.name_count, | |
fcf23d5b | 5590 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5591 | return NULL; |
5592 | } | |
5593 | ||
5594 | for (;;) | |
5595 | { | |
5596 | const uint32_t namei_full_hash | |
5597 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5598 | (map.hash_table_reordered + namei), 4, | |
5599 | map.dwarf5_byte_order); | |
5600 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5601 | return NULL; | |
5602 | ||
5603 | if (full_hash == namei_full_hash) | |
5604 | { | |
fcf23d5b | 5605 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5606 | |
5607 | #if 0 /* An expensive sanity check. */ | |
5608 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5609 | { | |
b98664d3 | 5610 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5611 | "[in module %s]"), |
5612 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5613 | return NULL; | |
5614 | } | |
5615 | #endif | |
5616 | ||
5617 | if (cmp (namei_string, name) == 0) | |
5618 | { | |
5619 | const ULONGEST namei_entry_offs | |
5620 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5621 | + namei * map.offset_size), | |
5622 | map.offset_size, map.dwarf5_byte_order); | |
5623 | return map.entry_pool + namei_entry_offs; | |
5624 | } | |
5625 | } | |
5626 | ||
5627 | ++namei; | |
5628 | if (namei >= map.name_count) | |
5629 | return NULL; | |
5630 | } | |
5631 | } | |
5632 | ||
5633 | const gdb_byte * | |
5634 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5635 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5636 | { |
5637 | if (namei >= map.name_count) | |
5638 | { | |
b98664d3 | 5639 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5640 | "[in module %s]"), |
5641 | namei, map.name_count, | |
fcf23d5b | 5642 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5643 | return NULL; |
5644 | } | |
5645 | ||
5646 | const ULONGEST namei_entry_offs | |
5647 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5648 | + namei * map.offset_size), | |
5649 | map.offset_size, map.dwarf5_byte_order); | |
5650 | return map.entry_pool + namei_entry_offs; | |
5651 | } | |
5652 | ||
5653 | /* See dw2_debug_names_iterator. */ | |
5654 | ||
5655 | dwarf2_per_cu_data * | |
5656 | dw2_debug_names_iterator::next () | |
5657 | { | |
5658 | if (m_addr == NULL) | |
5659 | return NULL; | |
5660 | ||
fcf23d5b SM |
5661 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5662 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5663 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5664 | |
5665 | again: | |
5666 | ||
5667 | unsigned int bytes_read; | |
5668 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5669 | m_addr += bytes_read; | |
5670 | if (abbrev == 0) | |
5671 | return NULL; | |
5672 | ||
5673 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5674 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5675 | { | |
b98664d3 | 5676 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5677 | "[in module %s]"), |
ed2dc618 | 5678 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5679 | return NULL; |
5680 | } | |
5681 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5682 | enum class symbol_linkage { |
5683 | unknown, | |
5684 | static_, | |
5685 | extern_, | |
23c13d42 | 5686 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5687 | dwarf2_per_cu_data *per_cu = NULL; |
5688 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5689 | { | |
5690 | ULONGEST ull; | |
5691 | switch (attr.form) | |
5692 | { | |
5693 | case DW_FORM_implicit_const: | |
5694 | ull = attr.implicit_const; | |
5695 | break; | |
5696 | case DW_FORM_flag_present: | |
5697 | ull = 1; | |
5698 | break; | |
5699 | case DW_FORM_udata: | |
5700 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5701 | m_addr += bytes_read; | |
5702 | break; | |
6dc55ce9 | 5703 | case DW_FORM_ref4: |
5704 | ull = read_4_bytes (abfd, m_addr); | |
5705 | m_addr += 4; | |
5706 | break; | |
5707 | case DW_FORM_ref8: | |
5708 | ull = read_8_bytes (abfd, m_addr); | |
5709 | m_addr += 8; | |
5710 | break; | |
5711 | case DW_FORM_ref_sig8: | |
5712 | ull = read_8_bytes (abfd, m_addr); | |
5713 | m_addr += 8; | |
5714 | break; | |
927aa2e7 | 5715 | default: |
b98664d3 | 5716 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5717 | dwarf_form_name (attr.form), |
ed2dc618 | 5718 | objfile_name (objfile)); |
927aa2e7 JK |
5719 | return NULL; |
5720 | } | |
5721 | switch (attr.dw_idx) | |
5722 | { | |
5723 | case DW_IDX_compile_unit: | |
5724 | /* Don't crash on bad data. */ | |
fcf23d5b | 5725 | if (ull >= m_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5726 | { |
b98664d3 | 5727 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5728 | " [in module %s]"), |
5729 | pulongest (ull), | |
fcf23d5b | 5730 | objfile_name (objfile)); |
927aa2e7 JK |
5731 | continue; |
5732 | } | |
fcf23d5b | 5733 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5734 | break; |
8af5c486 JK |
5735 | case DW_IDX_type_unit: |
5736 | /* Don't crash on bad data. */ | |
fcf23d5b | 5737 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5738 | { |
b98664d3 | 5739 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5740 | " [in module %s]"), |
5741 | pulongest (ull), | |
fcf23d5b | 5742 | objfile_name (objfile)); |
8af5c486 JK |
5743 | continue; |
5744 | } | |
fcf23d5b | 5745 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5746 | break; |
6dc55ce9 | 5747 | case DW_IDX_die_offset: |
5748 | /* In a per-CU index (as opposed to a per-module index), index | |
5749 | entries without CU attribute implicitly refer to the single CU. */ | |
5750 | if (per_cu == NULL) | |
fcf23d5b | 5751 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5752 | break; |
927aa2e7 JK |
5753 | case DW_IDX_GNU_internal: |
5754 | if (!m_map.augmentation_is_gdb) | |
5755 | break; | |
23c13d42 | 5756 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5757 | break; |
5758 | case DW_IDX_GNU_external: | |
5759 | if (!m_map.augmentation_is_gdb) | |
5760 | break; | |
23c13d42 | 5761 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5762 | break; |
5763 | } | |
5764 | } | |
5765 | ||
5766 | /* Skip if already read in. */ | |
fcf23d5b | 5767 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5768 | goto again; |
5769 | ||
5770 | /* Check static vs global. */ | |
23c13d42 | 5771 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5772 | { |
2b79f376 | 5773 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5774 | const bool symbol_is_static = |
5775 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5776 | if (want_static != symbol_is_static) |
2b79f376 | 5777 | goto again; |
927aa2e7 JK |
5778 | } |
5779 | ||
5780 | /* Match dw2_symtab_iter_next, symbol_kind | |
5781 | and debug_names::psymbol_tag. */ | |
5782 | switch (m_domain) | |
5783 | { | |
5784 | case VAR_DOMAIN: | |
5785 | switch (indexval.dwarf_tag) | |
5786 | { | |
5787 | case DW_TAG_variable: | |
5788 | case DW_TAG_subprogram: | |
5789 | /* Some types are also in VAR_DOMAIN. */ | |
5790 | case DW_TAG_typedef: | |
5791 | case DW_TAG_structure_type: | |
5792 | break; | |
5793 | default: | |
5794 | goto again; | |
5795 | } | |
5796 | break; | |
5797 | case STRUCT_DOMAIN: | |
5798 | switch (indexval.dwarf_tag) | |
5799 | { | |
5800 | case DW_TAG_typedef: | |
5801 | case DW_TAG_structure_type: | |
5802 | break; | |
5803 | default: | |
5804 | goto again; | |
5805 | } | |
5806 | break; | |
5807 | case LABEL_DOMAIN: | |
5808 | switch (indexval.dwarf_tag) | |
5809 | { | |
5810 | case 0: | |
5811 | case DW_TAG_variable: | |
5812 | break; | |
5813 | default: | |
5814 | goto again; | |
5815 | } | |
5816 | break; | |
59c35742 AB |
5817 | case MODULE_DOMAIN: |
5818 | switch (indexval.dwarf_tag) | |
5819 | { | |
5820 | case DW_TAG_module: | |
5821 | break; | |
5822 | default: | |
5823 | goto again; | |
5824 | } | |
5825 | break; | |
927aa2e7 JK |
5826 | default: |
5827 | break; | |
5828 | } | |
5829 | ||
5830 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5831 | debug_names::psymbol_tag. */ | |
5832 | switch (m_search) | |
4b514bc8 | 5833 | { |
927aa2e7 JK |
5834 | case VARIABLES_DOMAIN: |
5835 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5836 | { |
927aa2e7 JK |
5837 | case DW_TAG_variable: |
5838 | break; | |
5839 | default: | |
5840 | goto again; | |
4b514bc8 | 5841 | } |
927aa2e7 JK |
5842 | break; |
5843 | case FUNCTIONS_DOMAIN: | |
5844 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5845 | { |
927aa2e7 JK |
5846 | case DW_TAG_subprogram: |
5847 | break; | |
5848 | default: | |
5849 | goto again; | |
4b514bc8 | 5850 | } |
927aa2e7 JK |
5851 | break; |
5852 | case TYPES_DOMAIN: | |
5853 | switch (indexval.dwarf_tag) | |
5854 | { | |
5855 | case DW_TAG_typedef: | |
5856 | case DW_TAG_structure_type: | |
5857 | break; | |
5858 | default: | |
5859 | goto again; | |
5860 | } | |
5861 | break; | |
59c35742 AB |
5862 | case MODULES_DOMAIN: |
5863 | switch (indexval.dwarf_tag) | |
5864 | { | |
5865 | case DW_TAG_module: | |
5866 | break; | |
5867 | default: | |
5868 | goto again; | |
5869 | } | |
927aa2e7 JK |
5870 | default: |
5871 | break; | |
4b514bc8 | 5872 | } |
927aa2e7 JK |
5873 | |
5874 | return per_cu; | |
4b514bc8 | 5875 | } |
61920122 | 5876 | |
927aa2e7 | 5877 | static struct compunit_symtab * |
c7f839cb | 5878 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5879 | const char *name, domain_enum domain) |
4b514bc8 | 5880 | { |
976ca316 | 5881 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
61920122 | 5882 | |
976ca316 | 5883 | const auto &mapp = per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5884 | if (!mapp) |
61920122 | 5885 | { |
927aa2e7 JK |
5886 | /* index is NULL if OBJF_READNOW. */ |
5887 | return NULL; | |
5888 | } | |
5889 | const auto &map = *mapp; | |
9291a0cd | 5890 | |
976ca316 | 5891 | dw2_debug_names_iterator iter (map, block_index, domain, name, per_objfile); |
9703b513 | 5892 | |
927aa2e7 JK |
5893 | struct compunit_symtab *stab_best = NULL; |
5894 | struct dwarf2_per_cu_data *per_cu; | |
5895 | while ((per_cu = iter.next ()) != NULL) | |
5896 | { | |
5897 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 5898 | compunit_symtab *stab |
976ca316 | 5899 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 | 5900 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5901 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5902 | |
927aa2e7 JK |
5903 | sym = block_find_symbol (block, name, domain, |
5904 | block_find_non_opaque_type_preferred, | |
5905 | &with_opaque); | |
9703b513 | 5906 | |
927aa2e7 JK |
5907 | /* Some caution must be observed with overloaded functions and |
5908 | methods, since the index will not contain any overload | |
5909 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5910 | |
927aa2e7 | 5911 | if (sym != NULL |
987012b8 | 5912 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5913 | return stab; |
5914 | if (with_opaque != NULL | |
987012b8 | 5915 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5916 | stab_best = stab; |
9703b513 | 5917 | |
927aa2e7 | 5918 | /* Keep looking through other CUs. */ |
9703b513 TT |
5919 | } |
5920 | ||
927aa2e7 | 5921 | return stab_best; |
9703b513 TT |
5922 | } |
5923 | ||
927aa2e7 JK |
5924 | /* This dumps minimal information about .debug_names. It is called |
5925 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5926 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5927 | |
927aa2e7 JK |
5928 | static void |
5929 | dw2_debug_names_dump (struct objfile *objfile) | |
5930 | { | |
976ca316 | 5931 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5932 | |
976ca316 | 5933 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5934 | printf_filtered (".debug_names:"); |
976ca316 | 5935 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5936 | printf_filtered (" exists\n"); |
5937 | else | |
5938 | printf_filtered (" faked for \"readnow\"\n"); | |
5939 | printf_filtered ("\n"); | |
9291a0cd TT |
5940 | } |
5941 | ||
9291a0cd | 5942 | static void |
927aa2e7 JK |
5943 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5944 | const char *func_name) | |
9291a0cd | 5945 | { |
976ca316 | 5946 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 5947 | |
976ca316 SM |
5948 | /* per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5949 | if (per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5950 | { |
976ca316 | 5951 | const mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
24c79950 | 5952 | |
fcf23d5b | 5953 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name, |
976ca316 | 5954 | per_objfile); |
24c79950 | 5955 | |
927aa2e7 JK |
5956 | struct dwarf2_per_cu_data *per_cu; |
5957 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5958 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 JK |
5959 | } |
5960 | } | |
24c79950 | 5961 | |
3b00ef10 TT |
5962 | static void |
5963 | dw2_debug_names_map_matching_symbols | |
5964 | (struct objfile *objfile, | |
5965 | const lookup_name_info &name, domain_enum domain, | |
5966 | int global, | |
5967 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5968 | symbol_compare_ftype *ordered_compare) | |
5969 | { | |
976ca316 | 5970 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5971 | |
5972 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5973 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5974 | return; |
5975 | ||
976ca316 | 5976 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5977 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5978 | ||
5979 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5980 | auto matcher = [&] (const char *symname) | |
5981 | { | |
5982 | if (ordered_compare == nullptr) | |
5983 | return true; | |
5984 | return ordered_compare (symname, match_name) == 0; | |
5985 | }; | |
5986 | ||
5987 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5988 | [&] (offset_type namei) | |
5989 | { | |
5990 | /* The name was matched, now expand corresponding CUs that were | |
5991 | marked. */ | |
fcf23d5b | 5992 | dw2_debug_names_iterator iter (map, block_kind, domain, namei, |
976ca316 | 5993 | per_objfile); |
3b00ef10 TT |
5994 | |
5995 | struct dwarf2_per_cu_data *per_cu; | |
5996 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5997 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5998 | nullptr); |
3b00ef10 | 5999 | return true; |
976ca316 | 6000 | }, per_objfile); |
3b00ef10 TT |
6001 | |
6002 | /* It's a shame we couldn't do this inside the | |
6003 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
6004 | that have already been expanded. Instead, this loop matches what | |
6005 | the psymtab code does. */ | |
976ca316 | 6006 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 6007 | { |
976ca316 | 6008 | compunit_symtab *symtab = per_objfile->get_symtab (per_cu); |
af758d11 | 6009 | if (symtab != nullptr) |
3b00ef10 TT |
6010 | { |
6011 | const struct block *block | |
af758d11 | 6012 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
6013 | if (!iterate_over_symbols_terminated (block, name, |
6014 | domain, callback)) | |
6015 | break; | |
6016 | } | |
6017 | } | |
6018 | } | |
6019 | ||
927aa2e7 JK |
6020 | static void |
6021 | dw2_debug_names_expand_symtabs_matching | |
6022 | (struct objfile *objfile, | |
6023 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 6024 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
6025 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
6026 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6027 | enum search_domain kind) | |
6028 | { | |
976ca316 | 6029 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 6030 | |
927aa2e7 | 6031 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 6032 | if (!per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 6033 | return; |
9291a0cd | 6034 | |
976ca316 | 6035 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 6036 | |
c1a66c06 TV |
6037 | if (symbol_matcher == NULL && lookup_name == NULL) |
6038 | { | |
976ca316 | 6039 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
6040 | { |
6041 | QUIT; | |
6042 | ||
976ca316 SM |
6043 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
6044 | expansion_notify); | |
c1a66c06 TV |
6045 | } |
6046 | return; | |
6047 | } | |
6048 | ||
976ca316 | 6049 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 6050 | |
c1a66c06 | 6051 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
6052 | symbol_matcher, |
6053 | kind, [&] (offset_type namei) | |
927aa2e7 | 6054 | { |
927aa2e7 JK |
6055 | /* The name was matched, now expand corresponding CUs that were |
6056 | marked. */ | |
976ca316 | 6057 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile); |
bbf2f4df | 6058 | |
927aa2e7 JK |
6059 | struct dwarf2_per_cu_data *per_cu; |
6060 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 SM |
6061 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
6062 | expansion_notify); | |
3b00ef10 | 6063 | return true; |
976ca316 | 6064 | }, per_objfile); |
9291a0cd TT |
6065 | } |
6066 | ||
927aa2e7 | 6067 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6068 | { |
6069 | dw2_has_symbols, | |
6070 | dw2_find_last_source_symtab, | |
6071 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6072 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6073 | dw2_debug_names_lookup_symbol, |
d3214198 | 6074 | NULL, |
9291a0cd | 6075 | dw2_print_stats, |
927aa2e7 | 6076 | dw2_debug_names_dump, |
927aa2e7 | 6077 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6078 | dw2_expand_all_symtabs, |
652a8996 | 6079 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 6080 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 6081 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6082 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6083 | NULL, |
9291a0cd TT |
6084 | dw2_map_symbol_filenames |
6085 | }; | |
6086 | ||
4485a1c1 | 6087 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 6088 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
6089 | |
6090 | template <typename T> | |
6091 | static gdb::array_view<const gdb_byte> | |
6092 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
6093 | { | |
6094 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
6095 | ||
96b79293 | 6096 | if (section->empty ()) |
4485a1c1 SM |
6097 | return {}; |
6098 | ||
6099 | /* Older elfutils strip versions could keep the section in the main | |
6100 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 6101 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
6102 | return {}; |
6103 | ||
96b79293 | 6104 | section->read (obj); |
4485a1c1 | 6105 | |
8bebfcda PA |
6106 | /* dwarf2_section_info::size is a bfd_size_type, while |
6107 | gdb::array_view works with size_t. On 32-bit hosts, with | |
6108 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
6109 | is 32-bit. So we need an explicit narrowing conversion here. | |
6110 | This is fine, because it's impossible to allocate or mmap an | |
6111 | array/buffer larger than what size_t can represent. */ | |
6112 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
6113 | } |
6114 | ||
87d6a7aa SM |
6115 | /* Lookup the index cache for the contents of the index associated to |
6116 | DWARF2_OBJ. */ | |
6117 | ||
6118 | static gdb::array_view<const gdb_byte> | |
5989a64e | 6119 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
6120 | { |
6121 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
6122 | if (build_id == nullptr) | |
6123 | return {}; | |
6124 | ||
6125 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 6126 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
6127 | } |
6128 | ||
6129 | /* Same as the above, but for DWZ. */ | |
6130 | ||
6131 | static gdb::array_view<const gdb_byte> | |
6132 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
6133 | { | |
6134 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
6135 | if (build_id == nullptr) | |
6136 | return {}; | |
6137 | ||
6138 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6139 | } | |
6140 | ||
3c0aa29a | 6141 | /* See symfile.h. */ |
9291a0cd | 6142 | |
3c0aa29a PA |
6143 | bool |
6144 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6145 | { |
976ca316 SM |
6146 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6147 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 6148 | |
9291a0cd TT |
6149 | /* If we're about to read full symbols, don't bother with the |
6150 | indices. In this case we also don't care if some other debug | |
6151 | format is making psymtabs, because they are all about to be | |
6152 | expanded anyway. */ | |
6153 | if ((objfile->flags & OBJF_READNOW)) | |
6154 | { | |
17ee85fc TT |
6155 | /* When using READNOW, the using_index flag (set below) indicates that |
6156 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
6157 | if (per_bfd->using_index) | |
6158 | { | |
6159 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6160 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6161 | return true; |
6162 | } | |
6163 | ||
6164 | per_bfd->using_index = 1; | |
976ca316 SM |
6165 | create_all_comp_units (per_objfile); |
6166 | create_all_type_units (per_objfile); | |
17ee85fc TT |
6167 | per_bfd->quick_file_names_table |
6168 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 6169 | per_objfile->resize_symtabs (); |
9291a0cd | 6170 | |
17ee85fc TT |
6171 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
6172 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 6173 | { |
17ee85fc | 6174 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 6175 | |
17ee85fc | 6176 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 6177 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
6178 | } |
6179 | ||
6180 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6181 | these functions will be no-ops because we will have expanded | |
6182 | all symtabs. */ | |
3c0aa29a PA |
6183 | *index_kind = dw_index_kind::GDB_INDEX; |
6184 | return true; | |
9291a0cd TT |
6185 | } |
6186 | ||
17ee85fc TT |
6187 | /* Was a debug names index already read when we processed an objfile sharing |
6188 | PER_BFD? */ | |
6189 | if (per_bfd->debug_names_table != nullptr) | |
6190 | { | |
6191 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
f8c41851 | 6192 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6193 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6194 | return true; |
6195 | } | |
6196 | ||
6197 | /* Was a GDB index already read when we processed an objfile sharing | |
6198 | PER_BFD? */ | |
6199 | if (per_bfd->index_table != nullptr) | |
6200 | { | |
6201 | *index_kind = dw_index_kind::GDB_INDEX; | |
f8c41851 | 6202 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6203 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6204 | return true; |
6205 | } | |
6206 | ||
efb763a5 SM |
6207 | /* There might already be partial symtabs built for this BFD. This happens |
6208 | when loading the same binary twice with the index-cache enabled. If so, | |
6209 | don't try to read an index. The objfile / per_objfile initialization will | |
6210 | be completed in dwarf2_build_psymtabs, in the standard partial symtabs | |
6211 | code path. */ | |
6212 | if (per_bfd->partial_symtabs != nullptr) | |
6213 | return false; | |
6214 | ||
976ca316 | 6215 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a PA |
6216 | { |
6217 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
976ca316 | 6218 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6219 | return true; |
6220 | } | |
927aa2e7 | 6221 | |
976ca316 | 6222 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 6223 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 6224 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
6225 | { |
6226 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6227 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6228 | return true; |
6229 | } | |
9291a0cd | 6230 | |
87d6a7aa | 6231 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 6232 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
6233 | get_gdb_index_contents_from_cache, |
6234 | get_gdb_index_contents_from_cache_dwz)) | |
6235 | { | |
6236 | global_index_cache.hit (); | |
6237 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6238 | per_objfile->resize_symtabs (); |
87d6a7aa SM |
6239 | return true; |
6240 | } | |
6241 | ||
6242 | global_index_cache.miss (); | |
3c0aa29a | 6243 | return false; |
9291a0cd TT |
6244 | } |
6245 | ||
6246 | \f | |
6247 | ||
dce234bc PP |
6248 | /* Build a partial symbol table. */ |
6249 | ||
6250 | void | |
f29dff0a | 6251 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6252 | { |
976ca316 SM |
6253 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6254 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
6255 | |
6256 | if (per_bfd->partial_symtabs != nullptr) | |
6257 | { | |
6258 | /* Partial symbols were already read, so now we can simply | |
6259 | attach them. */ | |
6260 | objfile->partial_symtabs = per_bfd->partial_symtabs; | |
976ca316 | 6261 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6262 | return; |
6263 | } | |
c9bf0622 | 6264 | |
a70b8144 | 6265 | try |
c9bf0622 TT |
6266 | { |
6267 | /* This isn't really ideal: all the data we allocate on the | |
6268 | objfile's obstack is still uselessly kept around. However, | |
6269 | freeing it seems unsafe. */ | |
906768f9 | 6270 | psymtab_discarder psymtabs (objfile); |
976ca316 | 6271 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 6272 | psymtabs.keep (); |
87d6a7aa | 6273 | |
976ca316 | 6274 | per_objfile->resize_symtabs (); |
af758d11 | 6275 | |
87d6a7aa | 6276 | /* (maybe) store an index in the cache. */ |
976ca316 | 6277 | global_index_cache.store (per_objfile); |
c9bf0622 | 6278 | } |
230d2906 | 6279 | catch (const gdb_exception_error &except) |
492d29ea PA |
6280 | { |
6281 | exception_print (gdb_stderr, except); | |
6282 | } | |
17ee85fc TT |
6283 | |
6284 | /* Finish by setting the local reference to partial symtabs, so that | |
6285 | we don't try to read them again if reading another objfile with the same | |
6286 | BFD. If we can't in fact share, this won't make a difference anyway as | |
6287 | the dwarf2_per_bfd object won't be shared. */ | |
6288 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
c906108c | 6289 | } |
c906108c | 6290 | |
3b80fe9b DE |
6291 | /* Find the base address of the compilation unit for range lists and |
6292 | location lists. It will normally be specified by DW_AT_low_pc. | |
6293 | In DWARF-3 draft 4, the base address could be overridden by | |
6294 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6295 | compilation units with discontinuous ranges. */ | |
6296 | ||
6297 | static void | |
6298 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6299 | { | |
6300 | struct attribute *attr; | |
6301 | ||
2b24b6e4 | 6302 | cu->base_address.reset (); |
3b80fe9b DE |
6303 | |
6304 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6305 | if (attr != nullptr) |
95f982e5 | 6306 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6307 | else |
6308 | { | |
6309 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6310 | if (attr != nullptr) |
95f982e5 | 6311 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6312 | } |
6313 | } | |
6314 | ||
36586728 TT |
6315 | /* Helper function that returns the proper abbrev section for |
6316 | THIS_CU. */ | |
6317 | ||
6318 | static struct dwarf2_section_info * | |
6319 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6320 | { | |
6321 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6322 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6323 | |
6324 | if (this_cu->is_dwz) | |
c3699833 | 6325 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6326 | else |
c3699833 | 6327 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6328 | |
6329 | return abbrev; | |
6330 | } | |
6331 | ||
f4dc4d17 DE |
6332 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6333 | ||
6334 | static sect_offset | |
976ca316 | 6335 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6336 | struct dwarf2_section_info *section, |
9c541725 | 6337 | sect_offset sect_off) |
f4dc4d17 | 6338 | { |
96b79293 | 6339 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6340 | const gdb_byte *info_ptr; |
ac298888 | 6341 | unsigned int initial_length_size, offset_size; |
43988095 | 6342 | uint16_t version; |
f4dc4d17 | 6343 | |
976ca316 | 6344 | section->read (per_objfile->objfile); |
9c541725 | 6345 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6346 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6347 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6348 | info_ptr += initial_length_size; |
6349 | ||
6350 | version = read_2_bytes (abfd, info_ptr); | |
6351 | info_ptr += 2; | |
6352 | if (version >= 5) | |
6353 | { | |
6354 | /* Skip unit type and address size. */ | |
6355 | info_ptr += 2; | |
6356 | } | |
6357 | ||
24aa364d | 6358 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6359 | } |
6360 | ||
b83470bf TT |
6361 | /* A partial symtab that is used only for include files. */ |
6362 | struct dwarf2_include_psymtab : public partial_symtab | |
6363 | { | |
6364 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6365 | : partial_symtab (filename, objfile) | |
6366 | { | |
6367 | } | |
6368 | ||
6369 | void read_symtab (struct objfile *objfile) override | |
6370 | { | |
194d088f TV |
6371 | /* It's an include file, no symbols to read for it. |
6372 | Everything is in the includer symtab. */ | |
6373 | ||
6374 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6375 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6376 | model the includer. But if we go the regular route of calling | |
6377 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6378 | to expand the includer, we'll only use expand_psymtab on the includer | |
6379 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6380 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6381 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6382 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6383 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6384 | } |
6385 | ||
6386 | void expand_psymtab (struct objfile *objfile) override | |
6387 | { | |
194d088f TV |
6388 | /* This is not called by read_symtab, and should not be called by any |
6389 | expand_dependencies. */ | |
6390 | gdb_assert (false); | |
b83470bf TT |
6391 | } |
6392 | ||
5717c425 | 6393 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6394 | { |
5717c425 | 6395 | return includer ()->readin_p (objfile); |
b83470bf TT |
6396 | } |
6397 | ||
5717c425 | 6398 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6399 | { |
6400 | return nullptr; | |
6401 | } | |
6402 | ||
6403 | private: | |
194d088f TV |
6404 | partial_symtab *includer () const |
6405 | { | |
6406 | /* An include psymtab has exactly one dependency: the psymtab that | |
6407 | includes it. */ | |
6408 | gdb_assert (this->number_of_dependencies == 1); | |
6409 | return this->dependencies[0]; | |
6410 | } | |
b83470bf TT |
6411 | }; |
6412 | ||
aaa75496 JB |
6413 | /* Allocate a new partial symtab for file named NAME and mark this new |
6414 | partial symtab as being an include of PST. */ | |
6415 | ||
6416 | static void | |
891813be | 6417 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
dda83cd7 | 6418 | struct objfile *objfile) |
aaa75496 | 6419 | { |
b83470bf | 6420 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6421 | |
fbd9ab74 | 6422 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6423 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6424 | |
a9342b62 | 6425 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6426 | subpst->dependencies[0] = pst; |
6427 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6428 | } |
6429 | ||
6430 | /* Read the Line Number Program data and extract the list of files | |
6431 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6432 | partial symtab for each of these included files. */ |
aaa75496 JB |
6433 | |
6434 | static void | |
6435 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6436 | struct die_info *die, |
891813be | 6437 | dwarf2_psymtab *pst) |
aaa75496 | 6438 | { |
fff8551c | 6439 | line_header_up lh; |
d85a05f0 | 6440 | struct attribute *attr; |
aaa75496 | 6441 | |
d85a05f0 | 6442 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e TT |
6443 | if (attr != nullptr && attr->form_is_unsigned ()) |
6444 | lh = dwarf_decode_line_header ((sect_offset) attr->as_unsigned (), cu); | |
aaa75496 JB |
6445 | if (lh == NULL) |
6446 | return; /* No linetable, so no includes. */ | |
6447 | ||
79748972 TT |
6448 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6449 | that we pass in the raw text_low here; that is ok because we're | |
6450 | only decoding the line table to make include partial symtabs, and | |
6451 | so the addresses aren't really used. */ | |
4ae976d1 | 6452 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6453 | pst->raw_text_low (), 1); |
aaa75496 JB |
6454 | } |
6455 | ||
348e048f | 6456 | static hashval_t |
52dc124a | 6457 | hash_signatured_type (const void *item) |
348e048f | 6458 | { |
9a3c8263 SM |
6459 | const struct signatured_type *sig_type |
6460 | = (const struct signatured_type *) item; | |
9a619af0 | 6461 | |
348e048f | 6462 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6463 | return sig_type->signature; |
348e048f DE |
6464 | } |
6465 | ||
6466 | static int | |
52dc124a | 6467 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6468 | { |
9a3c8263 SM |
6469 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6470 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6471 | |
348e048f DE |
6472 | return lhs->signature == rhs->signature; |
6473 | } | |
6474 | ||
1fd400ff TT |
6475 | /* Allocate a hash table for signatured types. */ |
6476 | ||
b0b6a987 | 6477 | static htab_up |
298e9637 | 6478 | allocate_signatured_type_table () |
1fd400ff | 6479 | { |
b0b6a987 TT |
6480 | return htab_up (htab_create_alloc (41, |
6481 | hash_signatured_type, | |
6482 | eq_signatured_type, | |
6483 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6484 | } |
6485 | ||
d467dd73 | 6486 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6487 | |
6488 | static int | |
d467dd73 | 6489 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6490 | { |
9a3c8263 | 6491 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6492 | std::vector<signatured_type *> *all_type_units |
6493 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6494 | |
b2bdb8cf | 6495 | all_type_units->push_back (sigt); |
1fd400ff TT |
6496 | |
6497 | return 1; | |
6498 | } | |
6499 | ||
78d4d2c5 | 6500 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6501 | and fill them into TYPES_HTAB. It will process only type units, |
6502 | therefore DW_UT_type. */ | |
c88ee1f0 | 6503 | |
78d4d2c5 | 6504 | static void |
976ca316 | 6505 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6506 | struct dwo_file *dwo_file, |
b0b6a987 | 6507 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6508 | rcuh_kind section_kind) |
348e048f | 6509 | { |
976ca316 | 6510 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6511 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6512 | bfd *abfd; |
6513 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6514 | |
4bdcc0c1 DE |
6515 | abbrev_section = (dwo_file != NULL |
6516 | ? &dwo_file->sections.abbrev | |
976ca316 | 6517 | : &per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6518 | |
6f738b01 SM |
6519 | dwarf_read_debug_printf ("Reading %s for %s:", |
6520 | section->get_name (), | |
6521 | abbrev_section->get_file_name ()); | |
09406207 | 6522 | |
96b79293 | 6523 | section->read (objfile); |
78d4d2c5 | 6524 | info_ptr = section->buffer; |
348e048f | 6525 | |
78d4d2c5 JK |
6526 | if (info_ptr == NULL) |
6527 | return; | |
348e048f | 6528 | |
78d4d2c5 JK |
6529 | /* We can't set abfd until now because the section may be empty or |
6530 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6531 | abfd = section->get_bfd_owner (); |
348e048f | 6532 | |
c0ab21c2 TT |
6533 | /* We don't use cutu_reader here because we don't need to read |
6534 | any dies: the signature is in the header. */ | |
3019eac3 | 6535 | |
78d4d2c5 JK |
6536 | end_ptr = info_ptr + section->size; |
6537 | while (info_ptr < end_ptr) | |
6538 | { | |
78d4d2c5 JK |
6539 | struct signatured_type *sig_type; |
6540 | struct dwo_unit *dwo_tu; | |
6541 | void **slot; | |
6542 | const gdb_byte *ptr = info_ptr; | |
6543 | struct comp_unit_head header; | |
6544 | unsigned int length; | |
8b70b953 | 6545 | |
9c541725 | 6546 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6547 | |
a49dd8dd JK |
6548 | /* Initialize it due to a false compiler warning. */ |
6549 | header.signature = -1; | |
9c541725 | 6550 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6551 | |
78d4d2c5 JK |
6552 | /* We need to read the type's signature in order to build the hash |
6553 | table, but we don't need anything else just yet. */ | |
348e048f | 6554 | |
976ca316 | 6555 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6556 | abbrev_section, ptr, section_kind); |
348e048f | 6557 | |
4057dfde | 6558 | length = header.get_length (); |
6caca83c | 6559 | |
78d4d2c5 JK |
6560 | /* Skip dummy type units. */ |
6561 | if (ptr >= info_ptr + length | |
43988095 | 6562 | || peek_abbrev_code (abfd, ptr) == 0 |
d2854d8d CT |
6563 | || (header.unit_type != DW_UT_type |
6564 | && header.unit_type != DW_UT_split_type)) | |
78d4d2c5 JK |
6565 | { |
6566 | info_ptr += length; | |
6567 | continue; | |
6568 | } | |
dee91e82 | 6569 | |
78d4d2c5 JK |
6570 | if (types_htab == NULL) |
6571 | { | |
6572 | if (dwo_file) | |
298e9637 | 6573 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6574 | else |
298e9637 | 6575 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6576 | } |
8b70b953 | 6577 | |
78d4d2c5 JK |
6578 | if (dwo_file) |
6579 | { | |
6580 | sig_type = NULL; | |
976ca316 | 6581 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
78d4d2c5 | 6582 | dwo_tu->dwo_file = dwo_file; |
43988095 | 6583 | dwo_tu->signature = header.signature; |
9c541725 | 6584 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6585 | dwo_tu->section = section; |
9c541725 | 6586 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6587 | dwo_tu->length = length; |
6588 | } | |
6589 | else | |
6590 | { | |
6591 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6592 | The real type_offset is in the DWO file. */ | |
6593 | dwo_tu = NULL; | |
976ca316 | 6594 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6595 | sig_type->signature = header.signature; |
9c541725 | 6596 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6597 | sig_type->per_cu.is_debug_types = 1; |
6598 | sig_type->per_cu.section = section; | |
9c541725 | 6599 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6600 | sig_type->per_cu.length = length; |
6601 | } | |
6602 | ||
b0b6a987 | 6603 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6604 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6605 | INSERT); | |
6606 | gdb_assert (slot != NULL); | |
6607 | if (*slot != NULL) | |
6608 | { | |
9c541725 | 6609 | sect_offset dup_sect_off; |
0349ea22 | 6610 | |
3019eac3 DE |
6611 | if (dwo_file) |
6612 | { | |
78d4d2c5 JK |
6613 | const struct dwo_unit *dup_tu |
6614 | = (const struct dwo_unit *) *slot; | |
6615 | ||
9c541725 | 6616 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6617 | } |
6618 | else | |
6619 | { | |
78d4d2c5 JK |
6620 | const struct signatured_type *dup_tu |
6621 | = (const struct signatured_type *) *slot; | |
6622 | ||
9c541725 | 6623 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6624 | } |
8b70b953 | 6625 | |
b98664d3 | 6626 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6627 | " the entry at offset %s, signature %s"), |
6628 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6629 | hex_string (header.signature)); |
78d4d2c5 JK |
6630 | } |
6631 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6632 | |
6f738b01 SM |
6633 | dwarf_read_debug_printf_v (" offset %s, signature %s", |
6634 | sect_offset_str (sect_off), | |
6635 | hex_string (header.signature)); | |
3019eac3 | 6636 | |
78d4d2c5 JK |
6637 | info_ptr += length; |
6638 | } | |
6639 | } | |
3019eac3 | 6640 | |
78d4d2c5 JK |
6641 | /* Create the hash table of all entries in the .debug_types |
6642 | (or .debug_types.dwo) section(s). | |
6643 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6644 | otherwise it is NULL. | |
b3c8eb43 | 6645 | |
78d4d2c5 | 6646 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6647 | |
78d4d2c5 | 6648 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6649 | |
78d4d2c5 | 6650 | static void |
976ca316 | 6651 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6652 | struct dwo_file *dwo_file, |
fd5866f6 | 6653 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6654 | htab_up &types_htab) |
78d4d2c5 | 6655 | { |
fd5866f6 | 6656 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6657 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6658 | rcuh_kind::TYPE); | |
3019eac3 DE |
6659 | } |
6660 | ||
6661 | /* Create the hash table of all entries in the .debug_types section, | |
6662 | and initialize all_type_units. | |
6663 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6664 | otherwise non-zero. */ | |
6665 | ||
6666 | static int | |
976ca316 | 6667 | create_all_type_units (dwarf2_per_objfile *per_objfile) |
3019eac3 | 6668 | { |
b0b6a987 | 6669 | htab_up types_htab; |
3019eac3 | 6670 | |
976ca316 SM |
6671 | create_debug_type_hash_table (per_objfile, NULL, &per_objfile->per_bfd->info, |
6672 | types_htab, rcuh_kind::COMPILE); | |
6673 | create_debug_types_hash_table (per_objfile, NULL, per_objfile->per_bfd->types, | |
6674 | types_htab); | |
3019eac3 DE |
6675 | if (types_htab == NULL) |
6676 | { | |
976ca316 | 6677 | per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6678 | return 0; |
6679 | } | |
6680 | ||
976ca316 | 6681 | per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6682 | |
976ca316 SM |
6683 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
6684 | per_objfile->per_bfd->all_type_units.reserve | |
6685 | (htab_elements (per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6686 | |
976ca316 | 6687 | htab_traverse_noresize (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6688 | add_signatured_type_cu_to_table, |
976ca316 | 6689 | &per_objfile->per_bfd->all_type_units); |
1fd400ff | 6690 | |
348e048f DE |
6691 | return 1; |
6692 | } | |
6693 | ||
5989a64e | 6694 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6695 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6696 | Otherwise we find one. */ | |
6697 | ||
6698 | static struct signatured_type * | |
976ca316 | 6699 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6700 | { |
976ca316 SM |
6701 | if (per_objfile->per_bfd->all_type_units.size () |
6702 | == per_objfile->per_bfd->all_type_units.capacity ()) | |
6703 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6704 | |
976ca316 | 6705 | signatured_type *sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6706 | |
976ca316 | 6707 | per_objfile->resize_symtabs (); |
af758d11 | 6708 | |
976ca316 | 6709 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6710 | sig_type->signature = sig; |
6711 | sig_type->per_cu.is_debug_types = 1; | |
976ca316 | 6712 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6713 | { |
6714 | sig_type->per_cu.v.quick = | |
976ca316 | 6715 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6716 | struct dwarf2_per_cu_quick_data); |
6717 | } | |
6718 | ||
6719 | if (slot == NULL) | |
6720 | { | |
976ca316 | 6721 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6722 | sig_type, INSERT); |
6723 | } | |
6724 | gdb_assert (*slot == NULL); | |
6725 | *slot = sig_type; | |
6726 | /* The rest of sig_type must be filled in by the caller. */ | |
6727 | return sig_type; | |
6728 | } | |
6729 | ||
a2ce51a0 DE |
6730 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6731 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6732 | ||
6733 | static void | |
976ca316 | 6734 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6735 | struct signatured_type *sig_entry, |
6736 | struct dwo_unit *dwo_entry) | |
6737 | { | |
976ca316 | 6738 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6739 | |
7ee85ab1 | 6740 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6741 | gdb_assert (! sig_entry->per_cu.queued); |
976ca316 | 6742 | gdb_assert (per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6743 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6744 | { |
6745 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
976ca316 | 6746 | gdb_assert (!per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6747 | } |
6748 | else | |
6749 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6750 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6751 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6752 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6753 | gdb_assert (sig_entry->dwo_unit == NULL); |
6754 | ||
6755 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6756 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6757 | sig_entry->per_cu.length = dwo_entry->length; |
6758 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6759 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6760 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6761 | sig_entry->dwo_unit = dwo_entry; | |
6762 | } | |
6763 | ||
6764 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6765 | If we haven't read the TU yet, create the signatured_type data structure |
6766 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6767 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6768 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6769 | containing that CU. Otherwise we could end up reading several other DWO | |
6770 | files (due to comdat folding) to process the transitive closure of all the | |
6771 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6772 | type signature that it needs. | |
a2ce51a0 DE |
6773 | We only do this for .gdb_index because in the psymtab case we already have |
6774 | to read all the DWOs to build the type unit groups. */ | |
6775 | ||
6776 | static struct signatured_type * | |
6777 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6778 | { | |
976ca316 | 6779 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6780 | struct dwo_file *dwo_file; |
6781 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6782 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6783 | void **slot; |
a2ce51a0 | 6784 | |
976ca316 | 6785 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6786 | |
6aa5f3a6 DE |
6787 | /* If TU skeletons have been removed then we may not have read in any |
6788 | TUs yet. */ | |
976ca316 SM |
6789 | if (per_objfile->per_bfd->signatured_types == NULL) |
6790 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6791 | |
6792 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6793 | Use the global signatured_types array to do our own comdat-folding |
6794 | of types. If this is the first time we're reading this TU, and | |
6795 | the TU has an entry in .gdb_index, replace the recorded data from | |
6796 | .gdb_index with this TU. */ | |
a2ce51a0 | 6797 | |
a2ce51a0 | 6798 | find_sig_entry.signature = sig; |
976ca316 | 6799 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6800 | &find_sig_entry, INSERT); |
9a3c8263 | 6801 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6802 | |
6803 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6804 | read. Don't reassign the global entry to point to this DWO if that's |
6805 | the case. Also note that if the TU is already being read, it may not | |
6806 | have come from a DWO, the program may be a mix of Fission-compiled | |
6807 | code and non-Fission-compiled code. */ | |
6808 | ||
6809 | /* Have we already tried to read this TU? | |
6810 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6811 | needn't exist in the global table yet). */ | |
6812 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6813 | return sig_entry; |
6814 | ||
6aa5f3a6 DE |
6815 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6816 | dwo_unit of the TU itself. */ | |
6817 | dwo_file = cu->dwo_unit->dwo_file; | |
6818 | ||
a2ce51a0 DE |
6819 | /* Ok, this is the first time we're reading this TU. */ |
6820 | if (dwo_file->tus == NULL) | |
6821 | return NULL; | |
6822 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6823 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6824 | &find_dwo_entry); | |
a2ce51a0 DE |
6825 | if (dwo_entry == NULL) |
6826 | return NULL; | |
6827 | ||
6aa5f3a6 DE |
6828 | /* If the global table doesn't have an entry for this TU, add one. */ |
6829 | if (sig_entry == NULL) | |
976ca316 | 6830 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6831 | |
976ca316 | 6832 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6833 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6834 | return sig_entry; |
6835 | } | |
6836 | ||
a2ce51a0 DE |
6837 | /* Subroutine of lookup_signatured_type. |
6838 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6839 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6840 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6841 | |
6842 | static struct signatured_type * | |
6843 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6844 | { | |
976ca316 SM |
6845 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6846 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6847 | struct dwo_unit *dwo_entry; |
6848 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6849 | void **slot; |
a2ce51a0 | 6850 | |
976ca316 | 6851 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6852 | gdb_assert (dwp_file != NULL); |
6853 | ||
6aa5f3a6 DE |
6854 | /* If TU skeletons have been removed then we may not have read in any |
6855 | TUs yet. */ | |
976ca316 SM |
6856 | if (per_objfile->per_bfd->signatured_types == NULL) |
6857 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6858 | |
6aa5f3a6 | 6859 | find_sig_entry.signature = sig; |
976ca316 | 6860 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6861 | &find_sig_entry, INSERT); |
9a3c8263 | 6862 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6863 | |
6864 | /* Have we already tried to read this TU? | |
6865 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6866 | needn't exist in the global table yet). */ | |
6867 | if (sig_entry != NULL) | |
6868 | return sig_entry; | |
6869 | ||
a2ce51a0 DE |
6870 | if (dwp_file->tus == NULL) |
6871 | return NULL; | |
976ca316 SM |
6872 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6873 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6874 | if (dwo_entry == NULL) |
6875 | return NULL; | |
6876 | ||
976ca316 SM |
6877 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6878 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6879 | |
a2ce51a0 DE |
6880 | return sig_entry; |
6881 | } | |
6882 | ||
380bca97 | 6883 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6884 | Returns NULL if signature SIG is not present in the table. |
6885 | It is up to the caller to complain about this. */ | |
348e048f DE |
6886 | |
6887 | static struct signatured_type * | |
a2ce51a0 | 6888 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6889 | { |
976ca316 | 6890 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6891 | |
976ca316 | 6892 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6893 | { |
6894 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6895 | These cases require special processing. */ | |
976ca316 | 6896 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6897 | return lookup_dwo_signatured_type (cu, sig); |
6898 | else | |
6899 | return lookup_dwp_signatured_type (cu, sig); | |
6900 | } | |
6901 | else | |
6902 | { | |
6903 | struct signatured_type find_entry, *entry; | |
348e048f | 6904 | |
976ca316 | 6905 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6906 | return NULL; |
6907 | find_entry.signature = sig; | |
9a3c8263 | 6908 | entry = ((struct signatured_type *) |
976ca316 | 6909 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6910 | &find_entry)); |
a2ce51a0 DE |
6911 | return entry; |
6912 | } | |
348e048f | 6913 | } |
18a8505e | 6914 | |
42e7ad6c | 6915 | /* Low level DIE reading support. */ |
348e048f | 6916 | |
d85a05f0 DJ |
6917 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6918 | ||
6919 | static void | |
6920 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6921 | struct dwarf2_cu *cu, |
3019eac3 | 6922 | struct dwarf2_section_info *section, |
685af9cd TT |
6923 | struct dwo_file *dwo_file, |
6924 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6925 | { |
fceca515 | 6926 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6927 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6928 | reader->cu = cu; |
3019eac3 | 6929 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6930 | reader->die_section = section; |
6931 | reader->buffer = section->buffer; | |
f664829e | 6932 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6933 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6934 | } |
6935 | ||
c0ab21c2 | 6936 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6937 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6938 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6939 | already. |
6940 | ||
6941 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6942 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6943 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6944 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6945 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6946 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6947 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6948 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6949 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6950 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6951 | kept around for at least as long as *RESULT_READER. | |
6952 | ||
b0c7bfa9 DE |
6953 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6954 | ||
6955 | static int | |
4ab09049 | 6956 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6957 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6958 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6959 | const char *stub_comp_dir, |
b0c7bfa9 | 6960 | struct die_reader_specs *result_reader, |
d521ce57 | 6961 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6962 | struct die_info **result_comp_unit_die, |
685af9cd | 6963 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6964 | { |
976ca316 | 6965 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6966 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6967 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6968 | bfd *abfd; |
d521ce57 | 6969 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6970 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6971 | int i,num_extra_attrs; | |
6972 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6973 | struct die_info *comp_unit_die; |
6974 | ||
b0aeadb3 DE |
6975 | /* At most one of these may be provided. */ |
6976 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6977 | |
b0c7bfa9 DE |
6978 | /* These attributes aren't processed until later: |
6979 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6980 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6981 | referenced later. However, these attributes are found in the stub | |
6982 | which we won't have later. In order to not impose this complication | |
6983 | on the rest of the code, we read them here and copy them to the | |
6984 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6985 | |
6986 | stmt_list = NULL; | |
6987 | low_pc = NULL; | |
6988 | high_pc = NULL; | |
6989 | ranges = NULL; | |
6990 | comp_dir = NULL; | |
6991 | ||
6992 | if (stub_comp_unit_die != NULL) | |
6993 | { | |
6994 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6995 | DWO file. */ | |
4ab09049 | 6996 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6997 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6998 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6999 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7000 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7001 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7002 | ||
a39fdb41 | 7003 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 7004 | |
2b0c7f41 SM |
7005 | /* There should be a DW_AT_GNU_ranges_base attribute here (if needed). |
7006 | We need the value before we can process DW_AT_ranges values from the | |
7007 | DWO. */ | |
7008 | cu->gnu_ranges_base = stub_comp_unit_die->gnu_ranges_base (); | |
7009 | ||
7010 | /* For DWARF5: record the DW_AT_rnglists_base value from the skeleton. If | |
7011 | there are attributes of form DW_FORM_rnglistx in the skeleton, they'll | |
7012 | need the rnglists base. Attributes of form DW_FORM_rnglistx in the | |
7013 | split unit don't use it, as the DWO has its own .debug_rnglists.dwo | |
7014 | section. */ | |
7015 | cu->rnglists_base = stub_comp_unit_die->rnglists_base (); | |
b0c7bfa9 | 7016 | } |
a2ce51a0 DE |
7017 | else if (stub_comp_dir != NULL) |
7018 | { | |
7019 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
fe56917a | 7020 | comp_dir = OBSTACK_ZALLOC (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7021 | comp_dir->name = DW_AT_comp_dir; |
7022 | comp_dir->form = DW_FORM_string; | |
c6481205 | 7023 | comp_dir->set_string_noncanonical (stub_comp_dir); |
a2ce51a0 | 7024 | } |
b0c7bfa9 DE |
7025 | |
7026 | /* Set up for reading the DWO CU/TU. */ | |
7027 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7028 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
7029 | section->read (objfile); |
7030 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
7031 | begin_info_ptr = info_ptr = (section->buffer |
7032 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7033 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 7034 | |
4ab09049 | 7035 | if (per_cu->is_debug_types) |
b0c7bfa9 | 7036 | { |
4ab09049 | 7037 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 7038 | |
976ca316 SM |
7039 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7040 | section, dwo_abbrev_section, | |
43988095 | 7041 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7042 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7043 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7044 | { |
7045 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7046 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7047 | hex_string (sig_type->signature), |
43988095 | 7048 | hex_string (cu->header.signature), |
9d8780f0 | 7049 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7050 | bfd_get_filename (abfd)); |
7051 | } | |
9c541725 | 7052 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7053 | /* For DWOs coming from DWP files, we don't know the CU length |
7054 | nor the type's offset in the TU until now. */ | |
4057dfde | 7055 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 7056 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7057 | |
7058 | /* Establish the type offset that can be used to lookup the type. | |
7059 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7060 | sig_type->type_offset_in_section |
7061 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7062 | } |
7063 | else | |
7064 | { | |
976ca316 SM |
7065 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7066 | section, dwo_abbrev_section, | |
43988095 | 7067 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7068 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7069 | /* For DWOs coming from DWP files, we don't know the CU length |
7070 | until now. */ | |
4057dfde | 7071 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
7072 | } |
7073 | ||
606decb2 | 7074 | dwo_abbrev_section->read (objfile); |
685af9cd | 7075 | *result_dwo_abbrev_table |
606decb2 | 7076 | = abbrev_table::read (dwo_abbrev_section, cu->header.abbrev_sect_off); |
685af9cd TT |
7077 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
7078 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7079 | |
7080 | /* Read in the die, but leave space to copy over the attributes | |
7081 | from the stub. This has the benefit of simplifying the rest of | |
7082 | the code - all the work to maintain the illusion of a single | |
7083 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7084 | num_extra_attrs = ((stmt_list != NULL) | |
7085 | + (low_pc != NULL) | |
7086 | + (high_pc != NULL) | |
7087 | + (ranges != NULL) | |
7088 | + (comp_dir != NULL)); | |
7089 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 7090 | num_extra_attrs); |
b0c7bfa9 DE |
7091 | |
7092 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7093 | comp_unit_die = *result_comp_unit_die; | |
7094 | i = comp_unit_die->num_attrs; | |
7095 | if (stmt_list != NULL) | |
7096 | comp_unit_die->attrs[i++] = *stmt_list; | |
7097 | if (low_pc != NULL) | |
7098 | comp_unit_die->attrs[i++] = *low_pc; | |
7099 | if (high_pc != NULL) | |
7100 | comp_unit_die->attrs[i++] = *high_pc; | |
7101 | if (ranges != NULL) | |
7102 | comp_unit_die->attrs[i++] = *ranges; | |
7103 | if (comp_dir != NULL) | |
7104 | comp_unit_die->attrs[i++] = *comp_dir; | |
7105 | comp_unit_die->num_attrs += num_extra_attrs; | |
7106 | ||
b4f54984 | 7107 | if (dwarf_die_debug) |
bf6af496 DE |
7108 | { |
7109 | fprintf_unfiltered (gdb_stdlog, | |
7110 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 7111 | section->get_name (), |
bf6af496 DE |
7112 | (unsigned) (begin_info_ptr - section->buffer), |
7113 | bfd_get_filename (abfd)); | |
b4f54984 | 7114 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7115 | } |
7116 | ||
b0c7bfa9 DE |
7117 | /* Skip dummy compilation units. */ |
7118 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7119 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7120 | return 0; | |
7121 | ||
7122 | *result_info_ptr = info_ptr; | |
7123 | return 1; | |
7124 | } | |
7125 | ||
a084a2a6 AT |
7126 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
7127 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
7128 | signature is part of the header. */ | |
7129 | static gdb::optional<ULONGEST> | |
7130 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
7131 | { | |
7132 | if (cu->header.version >= 5) | |
7133 | return cu->header.signature; | |
7134 | struct attribute *attr; | |
7135 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
529908cb | 7136 | if (attr == nullptr || !attr->form_is_unsigned ()) |
a084a2a6 | 7137 | return gdb::optional<ULONGEST> (); |
529908cb | 7138 | return attr->as_unsigned (); |
a084a2a6 AT |
7139 | } |
7140 | ||
c0ab21c2 | 7141 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7142 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 7143 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7144 | |
7145 | static struct dwo_unit * | |
4ab09049 | 7146 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 7147 | { |
4ab09049 | 7148 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 7149 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7150 | const char *comp_dir; |
b0c7bfa9 | 7151 | |
a2ce51a0 DE |
7152 | gdb_assert (cu != NULL); |
7153 | ||
b0c7bfa9 | 7154 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7155 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7156 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 7157 | |
4ab09049 SM |
7158 | if (per_cu->is_debug_types) |
7159 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
7160 | else |
7161 | { | |
a084a2a6 | 7162 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 7163 | |
a084a2a6 | 7164 | if (!signature.has_value ()) |
b0c7bfa9 DE |
7165 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7166 | " [in module %s]"), | |
4ab09049 SM |
7167 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
7168 | ||
7169 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
7170 | } |
7171 | ||
b0c7bfa9 DE |
7172 | return dwo_unit; |
7173 | } | |
7174 | ||
c0ab21c2 | 7175 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7176 | See it for a description of the parameters. |
fcd3b13d | 7177 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7178 | |
c0ab21c2 | 7179 | void |
9e021579 SM |
7180 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
7181 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 7182 | dwarf2_cu *existing_cu) |
a2ce51a0 | 7183 | { |
a2ce51a0 | 7184 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7185 | |
7186 | /* Verify we can do the following downcast, and that we have the | |
7187 | data we need. */ | |
7188 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7189 | sig_type = (struct signatured_type *) this_cu; | |
7190 | gdb_assert (sig_type->dwo_unit != NULL); | |
7191 | ||
2e671100 SM |
7192 | dwarf2_cu *cu; |
7193 | ||
7194 | if (existing_cu != nullptr) | |
6aa5f3a6 | 7195 | { |
2e671100 SM |
7196 | cu = existing_cu; |
7197 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7198 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7199 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7200 | } |
7201 | else | |
7202 | { | |
7188ed02 | 7203 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7204 | in per_objfile yet. */ |
7188ed02 | 7205 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
9e021579 | 7206 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 7207 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
7208 | } |
7209 | ||
7210 | /* A future optimization, if needed, would be to use an existing | |
7211 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7212 | could share abbrev tables. */ | |
a2ce51a0 | 7213 | |
2e671100 | 7214 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7215 | NULL /* stub_comp_unit_die */, |
7216 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 7217 | this, &info_ptr, |
3e225074 | 7218 | &comp_unit_die, |
c0ab21c2 | 7219 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7220 | { |
7221 | /* Dummy die. */ | |
c0ab21c2 | 7222 | dummy_p = true; |
a2ce51a0 | 7223 | } |
a2ce51a0 DE |
7224 | } |
7225 | ||
fd820528 | 7226 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7227 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7228 | |
f4dc4d17 DE |
7229 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7230 | Otherwise the table specified in the comp unit header is read in and used. | |
7231 | This is an optimization for when we already have the abbrev table. | |
7232 | ||
2e671100 SM |
7233 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
7234 | allocated. */ | |
aaa75496 | 7235 | |
ab432490 | 7236 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7237 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 7238 | struct abbrev_table *abbrev_table, |
2e671100 | 7239 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
7240 | bool skip_partial) |
7241 | : die_reader_specs {}, | |
6751ebae | 7242 | m_this_cu (this_cu) |
c906108c | 7243 | { |
976ca316 | 7244 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7245 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7246 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 7247 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7248 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7249 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7250 | /* Non-zero if CU currently points to a DWO file and we need to |
7251 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7252 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7253 | int rereading_dwo_cu = 0; |
c906108c | 7254 | |
b4f54984 | 7255 | if (dwarf_die_debug) |
9d8780f0 | 7256 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7257 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7258 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7259 | |
a2ce51a0 DE |
7260 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7261 | file (instead of going through the stub), short-circuit all of this. */ | |
7262 | if (this_cu->reading_dwo_directly) | |
7263 | { | |
7264 | /* Narrow down the scope of possibilities to have to understand. */ | |
7265 | gdb_assert (this_cu->is_debug_types); | |
7266 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 7267 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
7268 | return; |
7269 | } | |
7270 | ||
dee91e82 | 7271 | /* This is cheap if the section is already read in. */ |
96b79293 | 7272 | section->read (objfile); |
dee91e82 | 7273 | |
9c541725 | 7274 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7275 | |
7276 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7277 | |
2e671100 SM |
7278 | dwarf2_cu *cu; |
7279 | ||
7280 | if (existing_cu != nullptr) | |
dee91e82 | 7281 | { |
2e671100 | 7282 | cu = existing_cu; |
42e7ad6c DE |
7283 | /* If this CU is from a DWO file we need to start over, we need to |
7284 | refetch the attributes from the skeleton CU. | |
7285 | This could be optimized by retrieving those attributes from when we | |
7286 | were here the first time: the previous comp_unit_die was stored in | |
7287 | comp_unit_obstack. But there's no data yet that we need this | |
7288 | optimization. */ | |
7289 | if (cu->dwo_unit != NULL) | |
7290 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7291 | } |
7292 | else | |
7293 | { | |
7188ed02 | 7294 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7295 | in per_objfile yet. */ |
976ca316 SM |
7296 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
7297 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 7298 | cu = m_new_cu.get (); |
42e7ad6c | 7299 | } |
dee91e82 | 7300 | |
b0c7bfa9 | 7301 | /* Get the header. */ |
9c541725 | 7302 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7303 | { |
7304 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7305 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7306 | } |
7307 | else | |
7308 | { | |
3019eac3 | 7309 | if (this_cu->is_debug_types) |
dee91e82 | 7310 | { |
976ca316 SM |
7311 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7312 | section, abbrev_section, | |
7313 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 7314 | |
42e7ad6c DE |
7315 | /* Since per_cu is the first member of struct signatured_type, |
7316 | we can go from a pointer to one to a pointer to the other. */ | |
7317 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7318 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7319 | gdb_assert (sig_type->type_offset_in_tu |
7320 | == cu->header.type_cu_offset_in_tu); | |
7321 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7322 | |
42e7ad6c DE |
7323 | /* LENGTH has not been set yet for type units if we're |
7324 | using .gdb_index. */ | |
4057dfde | 7325 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7326 | |
7327 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7328 | sig_type->type_offset_in_section = |
7329 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7330 | |
7331 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7332 | } |
7333 | else | |
7334 | { | |
976ca316 SM |
7335 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7336 | section, abbrev_section, | |
43988095 JK |
7337 | info_ptr, |
7338 | rcuh_kind::COMPILE); | |
dee91e82 | 7339 | |
9c541725 | 7340 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7341 | if (this_cu->length == 0) |
7342 | this_cu->length = cu->header.get_length (); | |
7343 | else | |
7344 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7345 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7346 | } |
7347 | } | |
10b3939b | 7348 | |
6caca83c | 7349 | /* Skip dummy compilation units. */ |
dee91e82 | 7350 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7351 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7352 | { |
7353 | dummy_p = true; | |
7354 | return; | |
7355 | } | |
6caca83c | 7356 | |
433df2d4 DE |
7357 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7358 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7359 | done. */ |
f4dc4d17 | 7360 | if (abbrev_table != NULL) |
685af9cd TT |
7361 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7362 | else | |
f4dc4d17 | 7363 | { |
606decb2 | 7364 | abbrev_section->read (objfile); |
c0ab21c2 | 7365 | m_abbrev_table_holder |
606decb2 | 7366 | = abbrev_table::read (abbrev_section, cu->header.abbrev_sect_off); |
c0ab21c2 | 7367 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7368 | } |
af703f96 | 7369 | |
dee91e82 | 7370 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7371 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7372 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7373 | |
58f0c718 | 7374 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7375 | { |
7376 | dummy_p = true; | |
7377 | return; | |
7378 | } | |
58f0c718 | 7379 | |
b0c7bfa9 | 7380 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7381 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7382 | table from the DWO file and pass the ownership over to us. It will be | |
7383 | referenced from READER, so we must make sure to free it after we're done | |
7384 | with READER. | |
7385 | ||
b0c7bfa9 DE |
7386 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7387 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7388 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7389 | if (dwo_name != nullptr) |
3019eac3 | 7390 | { |
3019eac3 | 7391 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7392 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7393 | |
3e225074 | 7394 | if (comp_unit_die->has_children) |
6a506a2d | 7395 | { |
b98664d3 | 7396 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7397 | " has children (offset %s) [in module %s]"), |
7398 | sect_offset_str (this_cu->sect_off), | |
7399 | bfd_get_filename (abfd)); | |
6a506a2d | 7400 | } |
4ab09049 | 7401 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7402 | if (dwo_unit != NULL) |
3019eac3 | 7403 | { |
4ab09049 | 7404 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7405 | comp_unit_die, NULL, |
c0ab21c2 | 7406 | this, &info_ptr, |
3e225074 | 7407 | &dwo_comp_unit_die, |
c0ab21c2 | 7408 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7409 | { |
7410 | /* Dummy die. */ | |
c0ab21c2 | 7411 | dummy_p = true; |
6a506a2d DE |
7412 | return; |
7413 | } | |
7414 | comp_unit_die = dwo_comp_unit_die; | |
7415 | } | |
7416 | else | |
7417 | { | |
7418 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7419 | the stub. A complaint has already been logged. There's | |
7420 | not much more we can do except pass on the stub DIE to | |
7421 | die_reader_func. We don't want to throw an error on bad | |
7422 | debug info. */ | |
3019eac3 DE |
7423 | } |
7424 | } | |
c0ab21c2 | 7425 | } |
3019eac3 | 7426 | |
6751ebae TT |
7427 | void |
7428 | cutu_reader::keep () | |
c0ab21c2 | 7429 | { |
b0c7bfa9 | 7430 | /* Done, clean up. */ |
6751ebae TT |
7431 | gdb_assert (!dummy_p); |
7432 | if (m_new_cu != NULL) | |
348e048f | 7433 | { |
7188ed02 | 7434 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
dda83cd7 | 7435 | now. */ |
7188ed02 SM |
7436 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; |
7437 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7438 | } |
dee91e82 DE |
7439 | } |
7440 | ||
18a8505e AT |
7441 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7442 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7443 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7444 | |
7445 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7446 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7447 | |
7448 | We fill in THIS_CU->length. | |
7449 | ||
dee91e82 | 7450 | THIS_CU->cu is always freed when done. |
3019eac3 | 7451 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7452 | to care whether it refers to the "main" CU or the DWO CU. |
7453 | ||
7454 | When parent_cu is passed, it is used to provide a default value for | |
7455 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7456 | |
ab432490 | 7457 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7458 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
7459 | struct dwarf2_cu *parent_cu, |
7460 | struct dwo_file *dwo_file) | |
7461 | : die_reader_specs {}, | |
7462 | m_this_cu (this_cu) | |
dee91e82 | 7463 | { |
976ca316 | 7464 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7465 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7466 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7467 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7468 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7469 | |
b4f54984 | 7470 | if (dwarf_die_debug) |
9d8780f0 | 7471 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7472 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7473 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7474 | |
976ca316 | 7475 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7476 | |
33e80786 DE |
7477 | abbrev_section = (dwo_file != NULL |
7478 | ? &dwo_file->sections.abbrev | |
7479 | : get_abbrev_section_for_cu (this_cu)); | |
7480 | ||
dee91e82 | 7481 | /* This is cheap if the section is already read in. */ |
96b79293 | 7482 | section->read (objfile); |
dee91e82 | 7483 | |
976ca316 | 7484 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 7485 | |
9c541725 | 7486 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
7487 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
7488 | section, abbrev_section, info_ptr, | |
43988095 JK |
7489 | (this_cu->is_debug_types |
7490 | ? rcuh_kind::TYPE | |
7491 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7492 | |
18a8505e AT |
7493 | if (parent_cu != nullptr) |
7494 | { | |
c0ab21c2 TT |
7495 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7496 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7497 | } |
4057dfde | 7498 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7499 | |
7500 | /* Skip dummy compilation units. */ | |
7501 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7502 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7503 | { |
7504 | dummy_p = true; | |
7505 | return; | |
7506 | } | |
72bf9492 | 7507 | |
606decb2 | 7508 | abbrev_section->read (objfile); |
c0ab21c2 | 7509 | m_abbrev_table_holder |
606decb2 | 7510 | = abbrev_table::read (abbrev_section, m_new_cu->header.abbrev_sect_off); |
dee91e82 | 7511 | |
c0ab21c2 TT |
7512 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7513 | m_abbrev_table_holder.get ()); | |
3e225074 | 7514 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7515 | } |
7516 | ||
0018ea6f DE |
7517 | \f |
7518 | /* Type Unit Groups. | |
dee91e82 | 7519 | |
0018ea6f DE |
7520 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7521 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7522 | so that all types coming from the same compilation (.o file) are grouped | |
7523 | together. A future step could be to put the types in the same symtab as | |
7524 | the CU the types ultimately came from. */ | |
ff013f42 | 7525 | |
f4dc4d17 DE |
7526 | static hashval_t |
7527 | hash_type_unit_group (const void *item) | |
7528 | { | |
9a3c8263 SM |
7529 | const struct type_unit_group *tu_group |
7530 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7531 | |
094b34ac | 7532 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7533 | } |
348e048f DE |
7534 | |
7535 | static int | |
f4dc4d17 | 7536 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7537 | { |
9a3c8263 SM |
7538 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7539 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7540 | |
094b34ac | 7541 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7542 | } |
348e048f | 7543 | |
f4dc4d17 DE |
7544 | /* Allocate a hash table for type unit groups. */ |
7545 | ||
eaa5fa8b | 7546 | static htab_up |
298e9637 | 7547 | allocate_type_unit_groups_table () |
f4dc4d17 | 7548 | { |
eaa5fa8b TT |
7549 | return htab_up (htab_create_alloc (3, |
7550 | hash_type_unit_group, | |
7551 | eq_type_unit_group, | |
7552 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7553 | } |
dee91e82 | 7554 | |
f4dc4d17 DE |
7555 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7556 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7557 | of any one psymtab grow too big. */ | |
7558 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7559 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7560 | |
094b34ac | 7561 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7562 | Create the type_unit_group object used to hold one or more TUs. */ |
7563 | ||
7564 | static struct type_unit_group * | |
094b34ac | 7565 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7566 | { |
976ca316 SM |
7567 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7568 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
094b34ac | 7569 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7570 | struct type_unit_group *tu_group; |
f4dc4d17 | 7571 | |
976ca316 | 7572 | tu_group = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, type_unit_group); |
094b34ac | 7573 | per_cu = &tu_group->per_cu; |
1859c670 | 7574 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7575 | |
1859c670 | 7576 | if (per_bfd->using_index) |
094b34ac | 7577 | { |
1859c670 | 7578 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7579 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7580 | } |
7581 | else | |
7582 | { | |
9c541725 | 7583 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7584 | dwarf2_psymtab *pst; |
528e1572 | 7585 | std::string name; |
094b34ac DE |
7586 | |
7587 | /* Give the symtab a useful name for debug purposes. */ | |
7588 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7589 | name = string_printf ("<type_units_%d>", |
7590 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7591 | else |
528e1572 | 7592 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7593 | |
976ca316 | 7594 | pst = create_partial_symtab (per_cu, per_objfile, name.c_str ()); |
6d94535f | 7595 | pst->anonymous = true; |
094b34ac | 7596 | } |
f4dc4d17 | 7597 | |
094b34ac | 7598 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7599 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7600 | |
7601 | return tu_group; | |
7602 | } | |
7603 | ||
094b34ac DE |
7604 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7605 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7606 | |
7607 | static struct type_unit_group * | |
ff39bb5e | 7608 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7609 | { |
976ca316 SM |
7610 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7611 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7612 | struct type_unit_group *tu_group; |
7613 | void **slot; | |
7614 | unsigned int line_offset; | |
7615 | struct type_unit_group type_unit_group_for_lookup; | |
7616 | ||
976ca316 SM |
7617 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7618 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7619 | |
7620 | /* Do we need to create a new group, or can we use an existing one? */ | |
7621 | ||
529908cb | 7622 | if (stmt_list != nullptr && stmt_list->form_is_unsigned ()) |
f4dc4d17 | 7623 | { |
529908cb | 7624 | line_offset = stmt_list->as_unsigned (); |
f4dc4d17 DE |
7625 | ++tu_stats->nr_symtab_sharers; |
7626 | } | |
7627 | else | |
7628 | { | |
7629 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7630 | We can do various things here like create one group per TU or | |
7631 | spread them over multiple groups to split up the expansion work. | |
7632 | To avoid worst case scenarios (too many groups or too large groups) | |
7633 | we, umm, group them in bunches. */ | |
7634 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7635 | | (tu_stats->nr_stmt_less_type_units | |
7636 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7637 | ++tu_stats->nr_stmt_less_type_units; | |
7638 | } | |
7639 | ||
094b34ac | 7640 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7641 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7642 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7643 | &type_unit_group_for_lookup, INSERT); |
7644 | if (*slot != NULL) | |
7645 | { | |
9a3c8263 | 7646 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7647 | gdb_assert (tu_group != NULL); |
7648 | } | |
7649 | else | |
7650 | { | |
9c541725 | 7651 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7652 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7653 | *slot = tu_group; |
7654 | ++tu_stats->nr_symtabs; | |
7655 | } | |
7656 | ||
7657 | return tu_group; | |
7658 | } | |
0018ea6f DE |
7659 | \f |
7660 | /* Partial symbol tables. */ | |
7661 | ||
7662 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7663 | ||
7664 | The caller must fill in the following details: | |
7665 | dirname, textlow, texthigh. */ | |
7666 | ||
891813be | 7667 | static dwarf2_psymtab * |
7aa104c4 SM |
7668 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7669 | dwarf2_per_objfile *per_objfile, | |
7670 | const char *name) | |
0018ea6f | 7671 | { |
7aa104c4 | 7672 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7673 | dwarf2_psymtab *pst; |
0018ea6f | 7674 | |
9f4e76a4 | 7675 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7676 | |
6d94535f | 7677 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7678 | |
7679 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7680 | per_cu->v.psymtab = pst; |
7681 | ||
7682 | return pst; | |
7683 | } | |
7684 | ||
c0ab21c2 | 7685 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7686 | |
7687 | static void | |
7688 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7689 | const gdb_byte *info_ptr, |
0018ea6f | 7690 | struct die_info *comp_unit_die, |
c0ab21c2 | 7691 | enum language pretend_language) |
0018ea6f DE |
7692 | { |
7693 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7694 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7695 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7696 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7697 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7698 | CORE_ADDR baseaddr; |
7699 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7700 | dwarf2_psymtab *pst; |
3a2b436a | 7701 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7702 | const char *filename; |
0018ea6f | 7703 | |
0018ea6f DE |
7704 | gdb_assert (! per_cu->is_debug_types); |
7705 | ||
c0ab21c2 | 7706 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7707 | |
0018ea6f | 7708 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7709 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7710 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7711 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7712 | if (filename == NULL) | |
0018ea6f | 7713 | filename = ""; |
2e927613 TV |
7714 | else if (strcmp (filename, artificial) == 0) |
7715 | { | |
7716 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7717 | sect_offset_str (per_cu->sect_off), |
7718 | (char *) NULL)); | |
2e927613 TV |
7719 | filename = debug_filename.get (); |
7720 | } | |
0018ea6f | 7721 | |
7aa104c4 | 7722 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7723 | |
7724 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7725 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7726 | |
b3b3bada | 7727 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7728 | |
7729 | dwarf2_find_base_address (comp_unit_die, cu); | |
7730 | ||
7731 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7732 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7733 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7734 | &best_highpc, cu, pst); | |
7735 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7736 | { |
7737 | CORE_ADDR low | |
7738 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7739 | - baseaddr); | |
7740 | CORE_ADDR high | |
7741 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7742 | - baseaddr - 1); | |
7743 | /* Store the contiguous range if it is not empty; it can be | |
7744 | empty for CUs with no code. */ | |
d320c2b5 TT |
7745 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7746 | low, high, pst); | |
79748972 | 7747 | } |
0018ea6f DE |
7748 | |
7749 | /* Check if comp unit has_children. | |
7750 | If so, read the rest of the partial symbols from this comp unit. | |
7751 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7752 | if (comp_unit_die->has_children) |
0018ea6f DE |
7753 | { |
7754 | struct partial_die_info *first_die; | |
7755 | CORE_ADDR lowpc, highpc; | |
7756 | ||
7757 | lowpc = ((CORE_ADDR) -1); | |
7758 | highpc = ((CORE_ADDR) 0); | |
7759 | ||
7760 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7761 | ||
7762 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7763 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7764 | |
7765 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7766 | complaints from `maint check'. */ | |
7767 | if (lowpc == ((CORE_ADDR) -1)) | |
7768 | lowpc = highpc; | |
7769 | ||
7770 | /* If the compilation unit didn't have an explicit address range, | |
7771 | then use the information extracted from its child dies. */ | |
e385593e | 7772 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7773 | { |
7774 | best_lowpc = lowpc; | |
7775 | best_highpc = highpc; | |
7776 | } | |
7777 | } | |
4ae976d1 | 7778 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7779 | best_lowpc + baseaddr) |
7780 | - baseaddr); | |
4ae976d1 | 7781 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7782 | best_highpc + baseaddr) |
7783 | - baseaddr); | |
0018ea6f | 7784 | |
ae7754b2 | 7785 | pst->end (); |
0018ea6f | 7786 | |
ae640021 | 7787 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7788 | { |
7789 | int i; | |
ae640021 | 7790 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7791 | |
7792 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7793 | post-pass. */ | |
7794 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7795 | pst->dependencies |
7796 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7797 | for (i = 0; i < len; ++i) |
7798 | { | |
7799 | pst->dependencies[i] | |
7800 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7801 | } | |
0018ea6f | 7802 | |
ae640021 | 7803 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7804 | } |
7805 | ||
7806 | /* Get the list of files included in the current compilation unit, | |
7807 | and build a psymtab for each of them. */ | |
7808 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7809 | ||
6f738b01 SM |
7810 | dwarf_read_debug_printf ("Psymtab for %s unit @%s: %s - %s" |
7811 | ", %d global, %d static syms", | |
7812 | per_cu->is_debug_types ? "type" : "comp", | |
7813 | sect_offset_str (per_cu->sect_off), | |
7814 | paddress (gdbarch, pst->text_low (objfile)), | |
7815 | paddress (gdbarch, pst->text_high (objfile)), | |
7816 | (int) pst->global_psymbols.size (), | |
7817 | (int) pst->static_psymbols.size ()); | |
0018ea6f DE |
7818 | } |
7819 | ||
7820 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7821 | Process compilation unit THIS_CU for a psymtab. */ | |
7822 | ||
7823 | static void | |
ab432490 SM |
7824 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7825 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7826 | bool want_partial_unit, |
b93601f3 | 7827 | enum language pretend_language) |
0018ea6f DE |
7828 | { |
7829 | /* If this compilation unit was already read in, free the | |
7830 | cached copy in order to read it in again. This is | |
7831 | necessary because we skipped some symbols when we first | |
7832 | read in the compilation unit (see load_partial_dies). | |
7833 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7834 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7835 | |
2e671100 | 7836 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7837 | |
58990295 TV |
7838 | switch (reader.comp_unit_die->tag) |
7839 | { | |
7840 | case DW_TAG_compile_unit: | |
7841 | this_cu->unit_type = DW_UT_compile; | |
7842 | break; | |
7843 | case DW_TAG_partial_unit: | |
7844 | this_cu->unit_type = DW_UT_partial; | |
7845 | break; | |
e77b0004 TV |
7846 | case DW_TAG_type_unit: |
7847 | this_cu->unit_type = DW_UT_type; | |
7848 | break; | |
58990295 TV |
7849 | default: |
7850 | abort (); | |
7851 | } | |
7852 | ||
c0ab21c2 | 7853 | if (reader.dummy_p) |
f1902523 | 7854 | { |
c0ab21c2 | 7855 | /* Nothing. */ |
f1902523 | 7856 | } |
c0ab21c2 | 7857 | else if (this_cu->is_debug_types) |
3e225074 TT |
7858 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7859 | reader.comp_unit_die); | |
135f5437 TT |
7860 | else if (want_partial_unit |
7861 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7862 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7863 | reader.comp_unit_die, | |
c0ab21c2 | 7864 | pretend_language); |
0018ea6f | 7865 | |
7188ed02 | 7866 | this_cu->lang = reader.cu->language; |
58990295 | 7867 | |
0018ea6f | 7868 | /* Age out any secondary CUs. */ |
7188ed02 | 7869 | per_objfile->age_comp_units (); |
0018ea6f | 7870 | } |
f4dc4d17 DE |
7871 | |
7872 | /* Reader function for build_type_psymtabs. */ | |
7873 | ||
7874 | static void | |
7875 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7876 | const gdb_byte *info_ptr, |
3e225074 | 7877 | struct die_info *type_unit_die) |
f4dc4d17 | 7878 | { |
976ca316 | 7879 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7880 | struct dwarf2_cu *cu = reader->cu; |
7881 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7882 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7883 | struct type_unit_group *tu_group; |
7884 | struct attribute *attr; | |
7885 | struct partial_die_info *first_die; | |
7886 | CORE_ADDR lowpc, highpc; | |
891813be | 7887 | dwarf2_psymtab *pst; |
f4dc4d17 | 7888 | |
0186c6a7 DE |
7889 | gdb_assert (per_cu->is_debug_types); |
7890 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7891 | |
3e225074 | 7892 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7893 | return; |
7894 | ||
052c8bb8 | 7895 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7896 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7897 | |
df07e2c7 | 7898 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7899 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7900 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7901 | |
7902 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7903 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7904 | pst->anonymous = true; |
f4dc4d17 DE |
7905 | |
7906 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7907 | ||
7908 | lowpc = (CORE_ADDR) -1; | |
7909 | highpc = (CORE_ADDR) 0; | |
7910 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7911 | ||
ae7754b2 | 7912 | pst->end (); |
f4dc4d17 DE |
7913 | } |
7914 | ||
73051182 DE |
7915 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7916 | ||
7917 | struct tu_abbrev_offset | |
7918 | { | |
b2bdb8cf SM |
7919 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7920 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7921 | {} | |
7922 | ||
7923 | signatured_type *sig_type; | |
73051182 DE |
7924 | sect_offset abbrev_offset; |
7925 | }; | |
7926 | ||
484cf504 | 7927 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7928 | |
484cf504 TT |
7929 | static bool |
7930 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7931 | const struct tu_abbrev_offset &b) | |
73051182 | 7932 | { |
484cf504 | 7933 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7934 | } |
7935 | ||
7936 | /* Efficiently read all the type units. | |
7937 | This does the bulk of the work for build_type_psymtabs. | |
7938 | ||
7939 | The efficiency is because we sort TUs by the abbrev table they use and | |
7940 | only read each abbrev table once. In one program there are 200K TUs | |
7941 | sharing 8K abbrev tables. | |
7942 | ||
7943 | The main purpose of this function is to support building the | |
5989a64e | 7944 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7945 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7946 | can collapse the search space by grouping them by stmt_list. | |
7947 | The savings can be significant, in the same program from above the 200K TUs | |
7948 | share 8K stmt_list tables. | |
7949 | ||
7950 | FUNC is expected to call get_type_unit_group, which will create the | |
7951 | struct type_unit_group if necessary and add it to | |
5989a64e | 7952 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7953 | |
7954 | static void | |
976ca316 | 7955 | build_type_psymtabs_1 (dwarf2_per_objfile *per_objfile) |
73051182 | 7956 | { |
976ca316 | 7957 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7958 | abbrev_table_up abbrev_table; |
73051182 | 7959 | sect_offset abbrev_offset; |
73051182 DE |
7960 | |
7961 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7962 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7963 | |
976ca316 | 7964 | if (per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7965 | return; |
7966 | ||
7967 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7968 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7969 | read each abbrev table in. | |
7970 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7971 | This is simpler and efficient enough for now. | |
7972 | ||
7973 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7974 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7975 | stmt_list value too so in practice this should work well. | |
7976 | ||
7977 | The basic algorithm here is: | |
7978 | ||
7979 | sort TUs by abbrev table | |
7980 | for each TU with same abbrev table: | |
7981 | read abbrev table if first user | |
7982 | read TU top level DIE | |
7983 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7984 | call FUNC */ | |
7985 | ||
6f738b01 | 7986 | dwarf_read_debug_printf ("Building type unit groups ..."); |
73051182 DE |
7987 | |
7988 | /* Sort in a separate table to maintain the order of all_type_units | |
7989 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7990 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
976ca316 | 7991 | sorted_by_abbrev.reserve (per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7992 | |
976ca316 | 7993 | for (signatured_type *sig_type : per_objfile->per_bfd->all_type_units) |
b2bdb8cf | 7994 | sorted_by_abbrev.emplace_back |
976ca316 | 7995 | (sig_type, read_abbrev_offset (per_objfile, sig_type->per_cu.section, |
b2bdb8cf | 7996 | sig_type->per_cu.sect_off)); |
73051182 | 7997 | |
484cf504 TT |
7998 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7999 | sort_tu_by_abbrev_offset); | |
73051182 | 8000 | |
9c541725 | 8001 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 8002 | |
b2bdb8cf | 8003 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 8004 | { |
73051182 DE |
8005 | /* Switch to the next abbrev table if necessary. */ |
8006 | if (abbrev_table == NULL | |
b2bdb8cf | 8007 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 8008 | { |
b2bdb8cf | 8009 | abbrev_offset = tu.abbrev_offset; |
606decb2 | 8010 | per_objfile->per_bfd->abbrev.read (per_objfile->objfile); |
73051182 | 8011 | abbrev_table = |
606decb2 | 8012 | abbrev_table::read (&per_objfile->per_bfd->abbrev, abbrev_offset); |
73051182 DE |
8013 | ++tu_stats->nr_uniq_abbrev_tables; |
8014 | } | |
8015 | ||
976ca316 | 8016 | cutu_reader reader (&tu.sig_type->per_cu, per_objfile, |
2e671100 | 8017 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
8018 | if (!reader.dummy_p) |
8019 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 8020 | reader.comp_unit_die); |
73051182 | 8021 | } |
6aa5f3a6 | 8022 | } |
73051182 | 8023 | |
6aa5f3a6 DE |
8024 | /* Print collected type unit statistics. */ |
8025 | ||
8026 | static void | |
976ca316 | 8027 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 8028 | { |
976ca316 | 8029 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 | 8030 | |
6f738b01 SM |
8031 | dwarf_read_debug_printf ("Type unit statistics:"); |
8032 | dwarf_read_debug_printf (" %zu TUs", | |
8033 | per_objfile->per_bfd->all_type_units.size ()); | |
8034 | dwarf_read_debug_printf (" %d uniq abbrev tables", | |
8035 | tu_stats->nr_uniq_abbrev_tables); | |
8036 | dwarf_read_debug_printf (" %d symtabs from stmt_list entries", | |
8037 | tu_stats->nr_symtabs); | |
8038 | dwarf_read_debug_printf (" %d symtab sharers", | |
8039 | tu_stats->nr_symtab_sharers); | |
8040 | dwarf_read_debug_printf (" %d type units without a stmt_list", | |
8041 | tu_stats->nr_stmt_less_type_units); | |
8042 | dwarf_read_debug_printf (" %d all_type_units reallocs", | |
8043 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8044 | } |
8045 | ||
f4dc4d17 DE |
8046 | /* Traversal function for build_type_psymtabs. */ |
8047 | ||
8048 | static int | |
8049 | build_type_psymtab_dependencies (void **slot, void *info) | |
8050 | { | |
976ca316 SM |
8051 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
8052 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 | 8053 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
094b34ac | 8054 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 8055 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 8056 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
8057 | int i; |
8058 | ||
8059 | gdb_assert (len > 0); | |
197400e8 | 8060 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
8061 | |
8062 | pst->number_of_dependencies = len; | |
a9342b62 | 8063 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 8064 | for (i = 0; i < len; ++i) |
f4dc4d17 | 8065 | { |
df07e2c7 | 8066 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
8067 | gdb_assert (iter->per_cu.is_debug_types); |
8068 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8069 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8070 | } |
8071 | ||
df07e2c7 AB |
8072 | delete tu_group->tus; |
8073 | tu_group->tus = nullptr; | |
348e048f DE |
8074 | |
8075 | return 1; | |
8076 | } | |
8077 | ||
8078 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8079 | Build partial symbol tables for the .debug_types comp-units. */ | |
8080 | ||
8081 | static void | |
976ca316 | 8082 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
348e048f | 8083 | { |
976ca316 | 8084 | if (! create_all_type_units (per_objfile)) |
348e048f DE |
8085 | return; |
8086 | ||
976ca316 | 8087 | build_type_psymtabs_1 (per_objfile); |
6aa5f3a6 | 8088 | } |
f4dc4d17 | 8089 | |
6aa5f3a6 DE |
8090 | /* Traversal function for process_skeletonless_type_unit. |
8091 | Read a TU in a DWO file and build partial symbols for it. */ | |
8092 | ||
8093 | static int | |
8094 | process_skeletonless_type_unit (void **slot, void *info) | |
8095 | { | |
8096 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 8097 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
8098 | struct signatured_type find_entry, *entry; |
8099 | ||
8100 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8101 | ||
976ca316 SM |
8102 | if (per_objfile->per_bfd->signatured_types == NULL) |
8103 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
8104 | |
8105 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 8106 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 8107 | &find_entry, INSERT); |
6aa5f3a6 DE |
8108 | /* If we've already seen this type there's nothing to do. What's happening |
8109 | is we're doing our own version of comdat-folding here. */ | |
8110 | if (*slot != NULL) | |
8111 | return 1; | |
8112 | ||
8113 | /* This does the job that create_all_type_units would have done for | |
8114 | this TU. */ | |
976ca316 SM |
8115 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
8116 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8117 | *slot = entry; |
8118 | ||
8119 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
976ca316 | 8120 | cutu_reader reader (&entry->per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
8121 | if (!reader.dummy_p) |
8122 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 8123 | reader.comp_unit_die); |
6aa5f3a6 DE |
8124 | |
8125 | return 1; | |
8126 | } | |
8127 | ||
8128 | /* Traversal function for process_skeletonless_type_units. */ | |
8129 | ||
8130 | static int | |
8131 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8132 | { | |
8133 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8134 | ||
8135 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
8136 | htab_traverse_noresize (dwo_file->tus.get (), |
8137 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
8138 | |
8139 | return 1; | |
8140 | } | |
8141 | ||
8142 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8143 | This is needed in case a TU was emitted without its skeleton. | |
8144 | Note: This can't be done until we know what all the DWO files are. */ | |
8145 | ||
8146 | static void | |
976ca316 | 8147 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
8148 | { |
8149 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
8150 | if (get_dwp_file (per_objfile) == NULL |
8151 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 8152 | { |
976ca316 | 8153 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 8154 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 8155 | per_objfile); |
6aa5f3a6 | 8156 | } |
348e048f DE |
8157 | } |
8158 | ||
ed2dc618 | 8159 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8160 | |
8161 | static void | |
976ca316 | 8162 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 8163 | { |
976ca316 | 8164 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 8165 | { |
891813be | 8166 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8167 | |
36586728 TT |
8168 | if (pst == NULL) |
8169 | continue; | |
8170 | ||
b76e467d | 8171 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8172 | { |
8173 | /* Set the 'user' field only if it is not already set. */ | |
8174 | if (pst->dependencies[j]->user == NULL) | |
8175 | pst->dependencies[j]->user = pst; | |
8176 | } | |
8177 | } | |
8178 | } | |
8179 | ||
93311388 DE |
8180 | /* Build the partial symbol table by doing a quick pass through the |
8181 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8182 | |
93311388 | 8183 | static void |
976ca316 | 8184 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 8185 | { |
976ca316 | 8186 | struct objfile *objfile = per_objfile->objfile; |
93311388 | 8187 | |
6f738b01 SM |
8188 | dwarf_read_debug_printf ("Building psymtabs of objfile %s ...", |
8189 | objfile_name (objfile)); | |
45cfd468 | 8190 | |
76935768 | 8191 | scoped_restore restore_reading_psyms |
976ca316 | 8192 | = make_scoped_restore (&per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 8193 | true); |
98bfdba5 | 8194 | |
976ca316 | 8195 | per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 8196 | |
93311388 DE |
8197 | /* Any cached compilation units will be linked by the per-objfile |
8198 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 8199 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 8200 | |
976ca316 | 8201 | build_type_psymtabs (per_objfile); |
348e048f | 8202 | |
976ca316 | 8203 | create_all_comp_units (per_objfile); |
c906108c | 8204 | |
60606b2c TT |
8205 | /* Create a temporary address map on a temporary obstack. We later |
8206 | copy this to the final obstack. */ | |
8268c778 | 8207 | auto_obstack temp_obstack; |
791afaa2 TT |
8208 | |
8209 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8210 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8211 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8212 | |
976ca316 | 8213 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
8214 | { |
8215 | if (per_cu->v.psymtab != NULL) | |
8216 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
8217 | continue; | |
976ca316 | 8218 | process_psymtab_comp_unit (per_cu, per_objfile, false, |
ab432490 | 8219 | language_minimal); |
3d5afab3 | 8220 | } |
ff013f42 | 8221 | |
6aa5f3a6 | 8222 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 8223 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
8224 | |
8225 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
976ca316 | 8226 | if (per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 8227 | { |
976ca316 SM |
8228 | htab_traverse_noresize (per_objfile->per_bfd->type_unit_groups.get (), |
8229 | build_type_psymtab_dependencies, per_objfile); | |
6aa5f3a6 DE |
8230 | } |
8231 | ||
6f738b01 | 8232 | if (dwarf_read_debug > 0) |
976ca316 | 8233 | print_tu_stats (per_objfile); |
6aa5f3a6 | 8234 | |
976ca316 | 8235 | set_partial_user (per_objfile); |
95554aad | 8236 | |
d320c2b5 TT |
8237 | objfile->partial_symtabs->psymtabs_addrmap |
8238 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8239 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8240 | /* At this point we want to keep the address map. */ |
8241 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8242 | |
6f738b01 SM |
8243 | dwarf_read_debug_printf ("Done building psymtabs of %s", |
8244 | objfile_name (objfile)); | |
ae038cb0 DJ |
8245 | } |
8246 | ||
dee91e82 DE |
8247 | /* Load the partial DIEs for a secondary CU into memory. |
8248 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8249 | |
dee91e82 | 8250 | static void |
ab432490 | 8251 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
8252 | dwarf2_per_objfile *per_objfile, |
8253 | dwarf2_cu *existing_cu) | |
dee91e82 | 8254 | { |
2e671100 | 8255 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
8256 | |
8257 | if (!reader.dummy_p) | |
8258 | { | |
8259 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8260 | language_minimal); | |
8261 | ||
8262 | /* Check if comp unit has_children. | |
8263 | If so, read the rest of the partial symbols from this comp unit. | |
8264 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8265 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8266 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8267 | |
8268 | reader.keep (); | |
c0ab21c2 | 8269 | } |
ae038cb0 DJ |
8270 | } |
8271 | ||
ae038cb0 | 8272 | static void |
976ca316 | 8273 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 8274 | struct dwarf2_section_info *section, |
f1902523 | 8275 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8276 | unsigned int is_dwz) |
ae038cb0 | 8277 | { |
d521ce57 | 8278 | const gdb_byte *info_ptr; |
976ca316 | 8279 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 8280 | |
6f738b01 SM |
8281 | dwarf_read_debug_printf ("Reading %s for %s", |
8282 | section->get_name (), | |
8283 | section->get_file_name ()); | |
bf6af496 | 8284 | |
96b79293 | 8285 | section->read (objfile); |
ae038cb0 | 8286 | |
36586728 | 8287 | info_ptr = section->buffer; |
6e70227d | 8288 | |
36586728 | 8289 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8290 | { |
ae038cb0 | 8291 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8292 | |
9c541725 | 8293 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8294 | |
f1902523 | 8295 | comp_unit_head cu_header; |
976ca316 | 8296 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 SM |
8297 | abbrev_section, info_ptr, |
8298 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8299 | |
8300 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8301 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 8302 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8303 | else |
8304 | { | |
976ca316 | 8305 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8306 | sig_type->signature = cu_header.signature; |
8307 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8308 | this_cu = &sig_type->per_cu; | |
8309 | } | |
8310 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8311 | this_cu->sect_off = sect_off; |
f1902523 | 8312 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8313 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8314 | this_cu->section = section; |
ae038cb0 | 8315 | |
976ca316 | 8316 | per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8317 | |
8318 | info_ptr = info_ptr + this_cu->length; | |
8319 | } | |
36586728 TT |
8320 | } |
8321 | ||
8322 | /* Create a list of all compilation units in OBJFILE. | |
8323 | This is only done for -readnow and building partial symtabs. */ | |
8324 | ||
8325 | static void | |
976ca316 | 8326 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 8327 | { |
976ca316 SM |
8328 | gdb_assert (per_objfile->per_bfd->all_comp_units.empty ()); |
8329 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, | |
8330 | &per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8331 | |
976ca316 | 8332 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 8333 | if (dwz != NULL) |
976ca316 | 8334 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1); |
c906108c SS |
8335 | } |
8336 | ||
5734ee8b | 8337 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8338 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8339 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8340 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8341 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8342 | |
72bf9492 DJ |
8343 | static void |
8344 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8345 | CORE_ADDR *highpc, int set_addrmap, |
8346 | struct dwarf2_cu *cu) | |
c906108c | 8347 | { |
72bf9492 | 8348 | struct partial_die_info *pdi; |
c906108c | 8349 | |
91c24f0a DC |
8350 | /* Now, march along the PDI's, descending into ones which have |
8351 | interesting children but skipping the children of the other ones, | |
8352 | until we reach the end of the compilation unit. */ | |
c906108c | 8353 | |
72bf9492 | 8354 | pdi = first_die; |
91c24f0a | 8355 | |
72bf9492 DJ |
8356 | while (pdi != NULL) |
8357 | { | |
52356b79 | 8358 | pdi->fixup (cu); |
c906108c | 8359 | |
f55ee35c | 8360 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8361 | children, so we need to look at them. Ditto for anonymous |
8362 | enums. */ | |
933c6fe4 | 8363 | |
7d00ffec | 8364 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8365 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8366 | || pdi->tag == DW_TAG_imported_unit |
8367 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8368 | { |
72bf9492 | 8369 | switch (pdi->tag) |
c906108c SS |
8370 | { |
8371 | case DW_TAG_subprogram: | |
b1dc1806 | 8372 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8373 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
8374 | if (cu->language == language_cplus) |
8375 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
8376 | set_addrmap, cu); | |
c906108c | 8377 | break; |
72929c62 | 8378 | case DW_TAG_constant: |
c906108c SS |
8379 | case DW_TAG_variable: |
8380 | case DW_TAG_typedef: | |
91c24f0a | 8381 | case DW_TAG_union_type: |
317d2668 TV |
8382 | if (!pdi->is_declaration |
8383 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8384 | { |
72bf9492 | 8385 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8386 | } |
8387 | break; | |
c906108c | 8388 | case DW_TAG_class_type: |
680b30c7 | 8389 | case DW_TAG_interface_type: |
c906108c | 8390 | case DW_TAG_structure_type: |
72bf9492 | 8391 | if (!pdi->is_declaration) |
c906108c | 8392 | { |
72bf9492 | 8393 | add_partial_symbol (pdi, cu); |
c906108c | 8394 | } |
b7fee5a3 KS |
8395 | if ((cu->language == language_rust |
8396 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8397 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8398 | set_addrmap, cu); | |
c906108c | 8399 | break; |
91c24f0a | 8400 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8401 | if (!pdi->is_declaration) |
8402 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8403 | break; |
8404 | case DW_TAG_base_type: | |
dda83cd7 | 8405 | case DW_TAG_subrange_type: |
c906108c | 8406 | /* File scope base type definitions are added to the partial |
dda83cd7 | 8407 | symbol table. */ |
72bf9492 | 8408 | add_partial_symbol (pdi, cu); |
c906108c | 8409 | break; |
d9fa45fe | 8410 | case DW_TAG_namespace: |
cdc07690 | 8411 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8412 | break; |
5d7cb8df | 8413 | case DW_TAG_module: |
59c35742 AB |
8414 | if (!pdi->is_declaration) |
8415 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8416 | break; |
95554aad TT |
8417 | case DW_TAG_imported_unit: |
8418 | { | |
8419 | struct dwarf2_per_cu_data *per_cu; | |
8420 | ||
f4dc4d17 DE |
8421 | /* For now we don't handle imported units in type units. */ |
8422 | if (cu->per_cu->is_debug_types) | |
8423 | { | |
8424 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8425 | " supported in type units [in module %s]"), | |
5e22e966 | 8426 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8427 | } |
8428 | ||
e3b94546 | 8429 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8430 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8431 | |
8432 | /* Go read the partial unit, if needed. */ | |
8433 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8434 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8435 | cu->language); | |
95554aad | 8436 | |
ae640021 | 8437 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8438 | } |
8439 | break; | |
74921315 KS |
8440 | case DW_TAG_imported_declaration: |
8441 | add_partial_symbol (pdi, cu); | |
8442 | break; | |
c906108c SS |
8443 | default: |
8444 | break; | |
8445 | } | |
8446 | } | |
8447 | ||
72bf9492 DJ |
8448 | /* If the die has a sibling, skip to the sibling. */ |
8449 | ||
8450 | pdi = pdi->die_sibling; | |
8451 | } | |
8452 | } | |
8453 | ||
8454 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8455 | |
72bf9492 | 8456 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8457 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8458 | Enumerators are an exception; they use the scope of their parent |
8459 | enumeration type, i.e. the name of the enumeration type is not | |
8460 | prepended to the enumerator. | |
91c24f0a | 8461 | |
72bf9492 DJ |
8462 | There are two complexities. One is DW_AT_specification; in this |
8463 | case "parent" means the parent of the target of the specification, | |
8464 | instead of the direct parent of the DIE. The other is compilers | |
8465 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8466 | the fully qualified name of structure types from their members' | |
8467 | linkage names. This must be done using the DIE's children rather | |
8468 | than the children of any DW_AT_specification target. We only need | |
8469 | to do this for structures at the top level, i.e. if the target of | |
8470 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8471 | have a parent. */ | |
8472 | ||
8473 | /* Compute the scope prefix associated with PDI's parent, in | |
8474 | compilation unit CU. The result will be allocated on CU's | |
8475 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8476 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8477 | static const char * |
72bf9492 DJ |
8478 | partial_die_parent_scope (struct partial_die_info *pdi, |
8479 | struct dwarf2_cu *cu) | |
8480 | { | |
15d034d0 | 8481 | const char *grandparent_scope; |
72bf9492 | 8482 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8483 | |
72bf9492 DJ |
8484 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8485 | then this means the parent of the specification DIE. */ | |
8486 | ||
8487 | real_pdi = pdi; | |
72bf9492 | 8488 | while (real_pdi->has_specification) |
fb816e8b | 8489 | { |
122cf0f2 AB |
8490 | auto res = find_partial_die (real_pdi->spec_offset, |
8491 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8492 | real_pdi = res.pdi; |
8493 | cu = res.cu; | |
8494 | } | |
72bf9492 DJ |
8495 | |
8496 | parent = real_pdi->die_parent; | |
8497 | if (parent == NULL) | |
8498 | return NULL; | |
8499 | ||
8500 | if (parent->scope_set) | |
8501 | return parent->scope; | |
8502 | ||
52356b79 | 8503 | parent->fixup (cu); |
72bf9492 | 8504 | |
10b3939b | 8505 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8506 | |
acebe513 UW |
8507 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8508 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8509 | Work around this problem here. */ | |
8510 | if (cu->language == language_cplus | |
6e70227d | 8511 | && parent->tag == DW_TAG_namespace |
7d00ffec | 8512 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
8513 | && grandparent_scope == NULL) |
8514 | { | |
8515 | parent->scope = NULL; | |
8516 | parent->scope_set = 1; | |
8517 | return NULL; | |
8518 | } | |
8519 | ||
0a4b0913 | 8520 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8521 | if (pdi->tag == DW_TAG_enumerator) |
8522 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8523 | parent->scope = grandparent_scope; | |
8524 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8525 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8526 | || parent->tag == DW_TAG_structure_type |
8527 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8528 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8529 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8530 | || parent->tag == DW_TAG_enumeration_type |
8531 | || (cu->language == language_fortran | |
8532 | && parent->tag == DW_TAG_subprogram | |
8533 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8534 | { |
8535 | if (grandparent_scope == NULL) | |
7d00ffec | 8536 | parent->scope = parent->name (cu); |
72bf9492 | 8537 | else |
3e43a32a MS |
8538 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8539 | grandparent_scope, | |
7d00ffec | 8540 | parent->name (cu), 0, cu); |
72bf9492 | 8541 | } |
72bf9492 DJ |
8542 | else |
8543 | { | |
8544 | /* FIXME drow/2004-04-01: What should we be doing with | |
8545 | function-local names? For partial symbols, we should probably be | |
8546 | ignoring them. */ | |
fa9c3fa0 TT |
8547 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8548 | dwarf_tag_name (parent->tag), | |
8549 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8550 | parent->scope = grandparent_scope; |
c906108c SS |
8551 | } |
8552 | ||
72bf9492 DJ |
8553 | parent->scope_set = 1; |
8554 | return parent->scope; | |
8555 | } | |
8556 | ||
8557 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8558 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8559 | |
43816ebc | 8560 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8561 | partial_die_full_name (struct partial_die_info *pdi, |
8562 | struct dwarf2_cu *cu) | |
8563 | { | |
15d034d0 | 8564 | const char *parent_scope; |
72bf9492 | 8565 | |
98bfdba5 PA |
8566 | /* If this is a template instantiation, we can not work out the |
8567 | template arguments from partial DIEs. So, unfortunately, we have | |
8568 | to go through the full DIEs. At least any work we do building | |
8569 | types here will be reused if full symbols are loaded later. */ | |
8570 | if (pdi->has_template_arguments) | |
8571 | { | |
52356b79 | 8572 | pdi->fixup (cu); |
98bfdba5 | 8573 | |
7d00ffec | 8574 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8575 | { |
8576 | struct die_info *die; | |
8577 | struct attribute attr; | |
8578 | struct dwarf2_cu *ref_cu = cu; | |
8579 | ||
b64f50a1 | 8580 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8581 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8582 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8583 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8584 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8585 | ||
43816ebc | 8586 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8587 | } |
8588 | } | |
8589 | ||
72bf9492 DJ |
8590 | parent_scope = partial_die_parent_scope (pdi, cu); |
8591 | if (parent_scope == NULL) | |
8592 | return NULL; | |
8593 | else | |
43816ebc | 8594 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8595 | pdi->name (cu), |
8596 | 0, cu)); | |
c906108c SS |
8597 | } |
8598 | ||
8599 | static void | |
72bf9492 | 8600 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8601 | { |
976ca316 SM |
8602 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8603 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8604 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8605 | CORE_ADDR addr = 0; |
15d034d0 | 8606 | const char *actual_name = NULL; |
e142c38c DJ |
8607 | CORE_ADDR baseaddr; |
8608 | ||
b3b3bada | 8609 | baseaddr = objfile->text_section_offset (); |
c906108c | 8610 | |
43816ebc TT |
8611 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8612 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8613 | if (built_actual_name != NULL) |
43816ebc | 8614 | actual_name = built_actual_name.get (); |
63d06c5c | 8615 | |
72bf9492 | 8616 | if (actual_name == NULL) |
7d00ffec | 8617 | actual_name = pdi->name (cu); |
72bf9492 | 8618 | |
76e288d1 TT |
8619 | partial_symbol psymbol; |
8620 | memset (&psymbol, 0, sizeof (psymbol)); | |
8621 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
a52d653e | 8622 | psymbol.ginfo.set_section_index (-1); |
76e288d1 TT |
8623 | |
8624 | /* The code below indicates that the psymbol should be installed by | |
8625 | setting this. */ | |
8626 | gdb::optional<psymbol_placement> where; | |
8627 | ||
c906108c SS |
8628 | switch (pdi->tag) |
8629 | { | |
b1dc1806 | 8630 | case DW_TAG_inlined_subroutine: |
c906108c | 8631 | case DW_TAG_subprogram: |
79748972 TT |
8632 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8633 | - baseaddr); | |
0a4b0913 AB |
8634 | if (pdi->is_external |
8635 | || cu->language == language_ada | |
8636 | || (cu->language == language_fortran | |
8637 | && pdi->die_parent != NULL | |
8638 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8639 | { | |
dda83cd7 SM |
8640 | /* Normally, only "external" DIEs are part of the global scope. |
8641 | But in Ada and Fortran, we want to be able to access nested | |
8642 | procedures globally. So all Ada and Fortran subprograms are | |
8643 | stored in the global scope. */ | |
76e288d1 | 8644 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8645 | } |
8646 | else | |
76e288d1 TT |
8647 | where = psymbol_placement::STATIC; |
8648 | ||
8649 | psymbol.domain = VAR_DOMAIN; | |
8650 | psymbol.aclass = LOC_BLOCK; | |
a52d653e | 8651 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 | 8652 | psymbol.ginfo.value.address = addr; |
0c1b455e TT |
8653 | |
8654 | if (pdi->main_subprogram && actual_name != NULL) | |
8655 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8656 | break; |
72929c62 | 8657 | case DW_TAG_constant: |
76e288d1 TT |
8658 | psymbol.domain = VAR_DOMAIN; |
8659 | psymbol.aclass = LOC_STATIC; | |
8660 | where = (pdi->is_external | |
8661 | ? psymbol_placement::GLOBAL | |
8662 | : psymbol_placement::STATIC); | |
72929c62 | 8663 | break; |
c906108c | 8664 | case DW_TAG_variable: |
95554aad TT |
8665 | if (pdi->d.locdesc) |
8666 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8667 | |
95554aad | 8668 | if (pdi->d.locdesc |
caac4577 | 8669 | && addr == 0 |
976ca316 | 8670 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8671 | { |
8672 | /* A global or static variable may also have been stripped | |
8673 | out by the linker if unused, in which case its address | |
8674 | will be nullified; do not add such variables into partial | |
8675 | symbol table then. */ | |
8676 | } | |
8677 | else if (pdi->is_external) | |
c906108c SS |
8678 | { |
8679 | /* Global Variable. | |
8680 | Don't enter into the minimal symbol tables as there is | |
8681 | a minimal symbol table entry from the ELF symbols already. | |
8682 | Enter into partial symbol table if it has a location | |
8683 | descriptor or a type. | |
8684 | If the location descriptor is missing, new_symbol will create | |
8685 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8686 | be determined from the minimal symbol table whenever the variable | |
8687 | is referenced. | |
8688 | The address for the partial symbol table entry is not | |
8689 | used by GDB, but it comes in handy for debugging partial symbol | |
8690 | table building. */ | |
8691 | ||
95554aad | 8692 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8693 | { |
8694 | psymbol.domain = VAR_DOMAIN; | |
8695 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8696 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8697 | psymbol.ginfo.value.address = addr; |
8698 | where = psymbol_placement::GLOBAL; | |
8699 | } | |
c906108c SS |
8700 | } |
8701 | else | |
8702 | { | |
ff908ebf AW |
8703 | int has_loc = pdi->d.locdesc != NULL; |
8704 | ||
8705 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8706 | without location descriptors or constant values). */ | |
8707 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8708 | return; |
ff908ebf | 8709 | |
76e288d1 TT |
8710 | psymbol.domain = VAR_DOMAIN; |
8711 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8712 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8713 | if (has_loc) |
8714 | psymbol.ginfo.value.address = addr; | |
8715 | where = psymbol_placement::STATIC; | |
c906108c SS |
8716 | } |
8717 | break; | |
d8f62e84 | 8718 | case DW_TAG_array_type: |
c906108c SS |
8719 | case DW_TAG_typedef: |
8720 | case DW_TAG_base_type: | |
a02abb62 | 8721 | case DW_TAG_subrange_type: |
76e288d1 TT |
8722 | psymbol.domain = VAR_DOMAIN; |
8723 | psymbol.aclass = LOC_TYPEDEF; | |
8724 | where = psymbol_placement::STATIC; | |
c906108c | 8725 | break; |
74921315 | 8726 | case DW_TAG_imported_declaration: |
72bf9492 | 8727 | case DW_TAG_namespace: |
76e288d1 TT |
8728 | psymbol.domain = VAR_DOMAIN; |
8729 | psymbol.aclass = LOC_TYPEDEF; | |
8730 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8731 | break; |
530e8392 | 8732 | case DW_TAG_module: |
a5fd13a9 | 8733 | /* With Fortran 77 there might be a "BLOCK DATA" module |
dda83cd7 SM |
8734 | available without any name. If so, we skip the module as it |
8735 | doesn't bring any value. */ | |
a5fd13a9 | 8736 | if (actual_name != nullptr) |
76e288d1 TT |
8737 | { |
8738 | psymbol.domain = MODULE_DOMAIN; | |
8739 | psymbol.aclass = LOC_TYPEDEF; | |
8740 | where = psymbol_placement::GLOBAL; | |
8741 | } | |
530e8392 | 8742 | break; |
c906108c | 8743 | case DW_TAG_class_type: |
680b30c7 | 8744 | case DW_TAG_interface_type: |
c906108c SS |
8745 | case DW_TAG_structure_type: |
8746 | case DW_TAG_union_type: | |
8747 | case DW_TAG_enumeration_type: | |
fa4028e9 | 8748 | /* Skip external references. The DWARF standard says in the section |
dda83cd7 SM |
8749 | about "Structure, Union, and Class Type Entries": "An incomplete |
8750 | structure, union or class type is represented by a structure, | |
8751 | union or class entry that does not have a byte size attribute | |
8752 | and that has a DW_AT_declaration attribute." */ | |
fa4028e9 | 8753 | if (!pdi->has_byte_size && pdi->is_declaration) |
43816ebc | 8754 | return; |
fa4028e9 | 8755 | |
63d06c5c DC |
8756 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8757 | static vs. global. */ | |
76e288d1 TT |
8758 | psymbol.domain = STRUCT_DOMAIN; |
8759 | psymbol.aclass = LOC_TYPEDEF; | |
8760 | where = (cu->language == language_cplus | |
8761 | ? psymbol_placement::GLOBAL | |
8762 | : psymbol_placement::STATIC); | |
c906108c SS |
8763 | break; |
8764 | case DW_TAG_enumerator: | |
76e288d1 TT |
8765 | psymbol.domain = VAR_DOMAIN; |
8766 | psymbol.aclass = LOC_CONST; | |
8767 | where = (cu->language == language_cplus | |
8768 | ? psymbol_placement::GLOBAL | |
8769 | : psymbol_placement::STATIC); | |
c906108c SS |
8770 | break; |
8771 | default: | |
8772 | break; | |
8773 | } | |
76e288d1 TT |
8774 | |
8775 | if (where.has_value ()) | |
8776 | { | |
f049a313 TT |
8777 | if (built_actual_name != nullptr) |
8778 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8779 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8780 | psymbol.ginfo.set_linkage_name (actual_name); | |
8781 | else | |
8782 | { | |
8783 | psymbol.ginfo.set_demangled_name (actual_name, | |
8784 | &objfile->objfile_obstack); | |
8785 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8786 | } | |
932539d7 | 8787 | cu->per_cu->v.psymtab->add_psymbol (psymbol, *where, objfile); |
76e288d1 | 8788 | } |
c906108c SS |
8789 | } |
8790 | ||
5c4e30ca DC |
8791 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8792 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8793 | the name of the enclosing namespace. */ | |
91c24f0a | 8794 | |
72bf9492 DJ |
8795 | static void |
8796 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8797 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8798 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8799 | { |
72bf9492 | 8800 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8801 | |
72bf9492 | 8802 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8803 | |
8804 | /* Now scan partial symbols in that namespace. */ | |
8805 | ||
91c24f0a | 8806 | if (pdi->has_children) |
cdc07690 | 8807 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8808 | } |
8809 | ||
5d7cb8df JK |
8810 | /* Read a partial die corresponding to a Fortran module. */ |
8811 | ||
8812 | static void | |
8813 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8814 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8815 | { |
530e8392 KB |
8816 | /* Add a symbol for the namespace. */ |
8817 | ||
8818 | add_partial_symbol (pdi, cu); | |
8819 | ||
f55ee35c | 8820 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8821 | |
8822 | if (pdi->has_children) | |
cdc07690 | 8823 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8824 | } |
8825 | ||
b1dc1806 XR |
8826 | /* Read a partial die corresponding to a subprogram or an inlined |
8827 | subprogram and create a partial symbol for that subprogram. | |
8828 | When the CU language allows it, this routine also defines a partial | |
8829 | symbol for each nested subprogram that this subprogram contains. | |
8830 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8831 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8832 | |
cdc07690 YQ |
8833 | PDI may also be a lexical block, in which case we simply search |
8834 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8835 | Again, this is only performed when the CU language allows this |
8836 | type of definitions. */ | |
8837 | ||
8838 | static void | |
8839 | add_partial_subprogram (struct partial_die_info *pdi, | |
8840 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8841 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8842 | { |
b1dc1806 | 8843 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8844 | { |
8845 | if (pdi->has_pc_info) | |
dda83cd7 SM |
8846 | { |
8847 | if (pdi->lowpc < *lowpc) | |
8848 | *lowpc = pdi->lowpc; | |
8849 | if (pdi->highpc > *highpc) | |
8850 | *highpc = pdi->highpc; | |
cdc07690 | 8851 | if (set_addrmap) |
5734ee8b | 8852 | { |
5e22e966 | 8853 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8854 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8855 | CORE_ADDR baseaddr; |
b926417a TT |
8856 | CORE_ADDR this_highpc; |
8857 | CORE_ADDR this_lowpc; | |
5734ee8b | 8858 | |
b3b3bada | 8859 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8860 | this_lowpc |
8861 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8862 | pdi->lowpc + baseaddr) | |
8863 | - baseaddr); | |
8864 | this_highpc | |
8865 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8866 | pdi->highpc + baseaddr) | |
8867 | - baseaddr); | |
d320c2b5 | 8868 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8869 | this_lowpc, this_highpc - 1, |
9291a0cd | 8870 | cu->per_cu->v.psymtab); |
5734ee8b | 8871 | } |
dda83cd7 | 8872 | } |
481860b3 GB |
8873 | |
8874 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8875 | { | |
dda83cd7 | 8876 | if (!pdi->is_declaration) |
e8d05480 JB |
8877 | /* Ignore subprogram DIEs that do not have a name, they are |
8878 | illegal. Do not emit a complaint at this point, we will | |
8879 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8880 | if (pdi->name (cu)) |
e8d05480 | 8881 | add_partial_symbol (pdi, cu); |
dda83cd7 | 8882 | } |
bc30ff58 | 8883 | } |
6e70227d | 8884 | |
bc30ff58 JB |
8885 | if (! pdi->has_children) |
8886 | return; | |
8887 | ||
0a4b0913 | 8888 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8889 | { |
8890 | pdi = pdi->die_child; | |
8891 | while (pdi != NULL) | |
8892 | { | |
52356b79 | 8893 | pdi->fixup (cu); |
bc30ff58 | 8894 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8895 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8896 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8897 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8898 | pdi = pdi->die_sibling; |
8899 | } | |
8900 | } | |
8901 | } | |
8902 | ||
91c24f0a DC |
8903 | /* Read a partial die corresponding to an enumeration type. */ |
8904 | ||
72bf9492 DJ |
8905 | static void |
8906 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8907 | struct dwarf2_cu *cu) | |
91c24f0a | 8908 | { |
72bf9492 | 8909 | struct partial_die_info *pdi; |
91c24f0a | 8910 | |
7d00ffec | 8911 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8912 | add_partial_symbol (enum_pdi, cu); |
8913 | ||
8914 | pdi = enum_pdi->die_child; | |
8915 | while (pdi) | |
91c24f0a | 8916 | { |
7d00ffec | 8917 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8918 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8919 | else |
72bf9492 DJ |
8920 | add_partial_symbol (pdi, cu); |
8921 | pdi = pdi->die_sibling; | |
91c24f0a | 8922 | } |
91c24f0a DC |
8923 | } |
8924 | ||
6caca83c CC |
8925 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8926 | ||
8927 | static unsigned int | |
d521ce57 | 8928 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8929 | { |
8930 | unsigned int bytes_read; | |
8931 | ||
8932 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8933 | } | |
8934 | ||
685af9cd TT |
8935 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8936 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8937 | ||
4bb7a0a7 DJ |
8938 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8939 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8940 | the initial number. */ | |
8941 | ||
8942 | static struct abbrev_info * | |
685af9cd TT |
8943 | peek_die_abbrev (const die_reader_specs &reader, |
8944 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8945 | { |
685af9cd | 8946 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8947 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8948 | unsigned int abbrev_number |
8949 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8950 | |
8951 | if (abbrev_number == 0) | |
8952 | return NULL; | |
8953 | ||
685af9cd | 8954 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8955 | if (!abbrev) |
8956 | { | |
422b9917 | 8957 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8958 | " at offset %s [in module %s]"), |
422b9917 | 8959 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8960 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8961 | } |
8962 | ||
8963 | return abbrev; | |
8964 | } | |
8965 | ||
93311388 DE |
8966 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8967 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8968 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8969 | ||
d521ce57 TT |
8970 | static const gdb_byte * |
8971 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8972 | { |
4bb7a0a7 DJ |
8973 | while (1) |
8974 | { | |
685af9cd TT |
8975 | unsigned int bytes_read; |
8976 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8977 | ||
4bb7a0a7 DJ |
8978 | if (abbrev == NULL) |
8979 | return info_ptr + bytes_read; | |
8980 | else | |
dee91e82 | 8981 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8982 | } |
8983 | } | |
8984 | ||
93311388 DE |
8985 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8986 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8987 | abbrev corresponding to that skipped uleb128 should be passed in |
8988 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8989 | children. */ | |
8990 | ||
d521ce57 TT |
8991 | static const gdb_byte * |
8992 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8993 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8994 | { |
8995 | unsigned int bytes_read; | |
8996 | struct attribute attr; | |
dee91e82 DE |
8997 | bfd *abfd = reader->abfd; |
8998 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8999 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9000 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9001 | unsigned int form, i; |
9002 | ||
9003 | for (i = 0; i < abbrev->num_attrs; i++) | |
9004 | { | |
9005 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9006 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9007 | { | |
7a5f294d | 9008 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9009 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 9010 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 9011 | else |
b9502d3f | 9012 | { |
0826b30a | 9013 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 9014 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
9015 | |
9016 | if (sibling_ptr < info_ptr) | |
b98664d3 | 9017 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 9018 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 9019 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
9020 | else |
9021 | return sibling_ptr; | |
9022 | } | |
4bb7a0a7 DJ |
9023 | } |
9024 | ||
9025 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9026 | form = abbrev->attrs[i].form; | |
9027 | skip_attribute: | |
9028 | switch (form) | |
9029 | { | |
4bb7a0a7 | 9030 | case DW_FORM_ref_addr: |
ae411497 TT |
9031 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9032 | and later it is offset sized. */ | |
9033 | if (cu->header.version == 2) | |
9034 | info_ptr += cu->header.addr_size; | |
9035 | else | |
9036 | info_ptr += cu->header.offset_size; | |
9037 | break; | |
36586728 TT |
9038 | case DW_FORM_GNU_ref_alt: |
9039 | info_ptr += cu->header.offset_size; | |
9040 | break; | |
ae411497 | 9041 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9042 | info_ptr += cu->header.addr_size; |
9043 | break; | |
9044 | case DW_FORM_data1: | |
9045 | case DW_FORM_ref1: | |
9046 | case DW_FORM_flag: | |
8fe0f950 | 9047 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
9048 | info_ptr += 1; |
9049 | break; | |
2dc7f7b3 | 9050 | case DW_FORM_flag_present: |
43988095 | 9051 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9052 | break; |
4bb7a0a7 DJ |
9053 | case DW_FORM_data2: |
9054 | case DW_FORM_ref2: | |
8fe0f950 | 9055 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
9056 | info_ptr += 2; |
9057 | break; | |
8fe0f950 AT |
9058 | case DW_FORM_strx3: |
9059 | info_ptr += 3; | |
9060 | break; | |
4bb7a0a7 DJ |
9061 | case DW_FORM_data4: |
9062 | case DW_FORM_ref4: | |
8fe0f950 | 9063 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
9064 | info_ptr += 4; |
9065 | break; | |
9066 | case DW_FORM_data8: | |
9067 | case DW_FORM_ref8: | |
55f1336d | 9068 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9069 | info_ptr += 8; |
9070 | break; | |
0224619f JK |
9071 | case DW_FORM_data16: |
9072 | info_ptr += 16; | |
9073 | break; | |
4bb7a0a7 | 9074 | case DW_FORM_string: |
9b1c24c8 | 9075 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9076 | info_ptr += bytes_read; |
9077 | break; | |
2dc7f7b3 | 9078 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9079 | case DW_FORM_strp: |
36586728 | 9080 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9081 | info_ptr += cu->header.offset_size; |
9082 | break; | |
2dc7f7b3 | 9083 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9084 | case DW_FORM_block: |
9085 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9086 | info_ptr += bytes_read; | |
9087 | break; | |
9088 | case DW_FORM_block1: | |
9089 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9090 | break; | |
9091 | case DW_FORM_block2: | |
9092 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9093 | break; | |
9094 | case DW_FORM_block4: | |
9095 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9096 | break; | |
336d760d | 9097 | case DW_FORM_addrx: |
cf532bd1 | 9098 | case DW_FORM_strx: |
4bb7a0a7 DJ |
9099 | case DW_FORM_sdata: |
9100 | case DW_FORM_udata: | |
9101 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9102 | case DW_FORM_GNU_addr_index: |
9103 | case DW_FORM_GNU_str_index: | |
18a8505e | 9104 | case DW_FORM_rnglistx: |
41144253 | 9105 | case DW_FORM_loclistx: |
d521ce57 | 9106 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9107 | break; |
9108 | case DW_FORM_indirect: | |
9109 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9110 | info_ptr += bytes_read; | |
9111 | /* We need to continue parsing from here, so just go back to | |
9112 | the top. */ | |
9113 | goto skip_attribute; | |
9114 | ||
9115 | default: | |
3e43a32a MS |
9116 | error (_("Dwarf Error: Cannot handle %s " |
9117 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9118 | dwarf_form_name (form), |
9119 | bfd_get_filename (abfd)); | |
9120 | } | |
9121 | } | |
9122 | ||
9123 | if (abbrev->has_children) | |
dee91e82 | 9124 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9125 | else |
9126 | return info_ptr; | |
9127 | } | |
9128 | ||
93311388 | 9129 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9130 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9131 | |
d521ce57 | 9132 | static const gdb_byte * |
dee91e82 DE |
9133 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9134 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9135 | const gdb_byte *info_ptr) |
91c24f0a DC |
9136 | { |
9137 | /* Do we know the sibling already? */ | |
72bf9492 | 9138 | |
91c24f0a DC |
9139 | if (orig_pdi->sibling) |
9140 | return orig_pdi->sibling; | |
9141 | ||
9142 | /* Are there any children to deal with? */ | |
9143 | ||
9144 | if (!orig_pdi->has_children) | |
9145 | return info_ptr; | |
9146 | ||
4bb7a0a7 | 9147 | /* Skip the children the long way. */ |
91c24f0a | 9148 | |
dee91e82 | 9149 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9150 | } |
9151 | ||
257e7a09 | 9152 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9153 | not NULL. */ |
c906108c | 9154 | |
891813be TT |
9155 | void |
9156 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9157 | { |
976ca316 | 9158 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 9159 | |
976ca316 | 9160 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 9161 | |
077cbab2 TT |
9162 | /* If this psymtab is constructed from a debug-only objfile, the |
9163 | has_section_at_zero flag will not necessarily be correct. We | |
9164 | can get the correct value for this flag by looking at the data | |
9165 | associated with the (presumably stripped) associated objfile. */ | |
9166 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9167 | { |
976ca316 | 9168 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 9169 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 9170 | |
976ca316 SM |
9171 | per_objfile->per_bfd->has_section_at_zero |
9172 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 9173 | } |
98bfdba5 | 9174 | |
8566b89b | 9175 | expand_psymtab (objfile); |
95554aad | 9176 | |
976ca316 | 9177 | process_cu_includes (per_objfile); |
c906108c | 9178 | } |
9cdd5dbd DE |
9179 | \f |
9180 | /* Reading in full CUs. */ | |
c906108c | 9181 | |
10b3939b DJ |
9182 | /* Add PER_CU to the queue. */ |
9183 | ||
9184 | static void | |
120ce1b5 SM |
9185 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
9186 | dwarf2_per_objfile *per_objfile, | |
95554aad | 9187 | enum language pretend_language) |
10b3939b | 9188 | { |
10b3939b | 9189 | per_cu->queued = 1; |
08ac5771 SM |
9190 | |
9191 | gdb_assert (per_objfile->per_bfd->queue.has_value ()); | |
9192 | per_cu->per_bfd->queue->emplace (per_cu, per_objfile, pretend_language); | |
10b3939b DJ |
9193 | } |
9194 | ||
616c069a SM |
9195 | /* If PER_CU is not yet expanded of queued for expansion, add it to the queue. |
9196 | ||
89e63ee4 DE |
9197 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a |
9198 | dependency. | |
69d751e3 | 9199 | |
616c069a SM |
9200 | Return true if maybe_queue_comp_unit requires the caller to load the CU's |
9201 | DIEs, false otherwise. | |
9202 | ||
9203 | Explanation: there is an invariant that if a CU is queued for expansion | |
9204 | (present in `dwarf2_per_bfd::queue`), then its DIEs are loaded | |
9205 | (a dwarf2_cu object exists for this CU, and `dwarf2_per_objfile::get_cu` | |
9206 | returns non-nullptr). If the CU gets enqueued by this function but its DIEs | |
9207 | are not yet loaded, the the caller must load the CU's DIEs to ensure the | |
9208 | invariant is respected. | |
9209 | ||
9210 | The caller is therefore not required to load the CU's DIEs (we return false) | |
9211 | if: | |
9212 | ||
9213 | - the CU is already expanded, and therefore does not get enqueued | |
9214 | - the CU gets enqueued for expansion, but its DIEs are already loaded | |
9215 | ||
9216 | Note that the caller should not use this function's return value as an | |
9217 | indicator of whether the CU's DIEs are loaded right now, it should check | |
9218 | that by calling `dwarf2_per_objfile::get_cu` instead. */ | |
0907af0c DE |
9219 | |
9220 | static int | |
89e63ee4 | 9221 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
9222 | dwarf2_per_cu_data *per_cu, |
9223 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
9224 | enum language pretend_language) |
9225 | { | |
9226 | /* We may arrive here during partial symbol reading, if we need full | |
9227 | DIEs to process an unusual case (e.g. template arguments). Do | |
9228 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 9229 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 9230 | { |
7188ed02 SM |
9231 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9232 | ||
9233 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
9234 | return 1; |
9235 | return 0; | |
9236 | } | |
9237 | ||
9238 | /* Mark the dependence relation so that we don't flush PER_CU | |
9239 | too early. */ | |
89e63ee4 DE |
9240 | if (dependent_cu != NULL) |
9241 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9242 | |
9243 | /* If it's already on the queue, we have nothing to do. */ | |
9244 | if (per_cu->queued) | |
de53369b SM |
9245 | { |
9246 | /* Verify the invariant that if a CU is queued for expansion, its DIEs are | |
9247 | loaded. */ | |
9248 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); | |
616c069a SM |
9249 | |
9250 | /* If the CU is queued for expansion, it should not already be | |
9251 | expanded. */ | |
9252 | gdb_assert (!per_objfile->symtab_set_p (per_cu)); | |
9253 | ||
9254 | /* The DIEs are already loaded, the caller doesn't need to do it. */ | |
de53369b SM |
9255 | return 0; |
9256 | } | |
0907af0c | 9257 | |
616c069a SM |
9258 | bool queued = false; |
9259 | if (!per_objfile->symtab_set_p (per_cu)) | |
9260 | { | |
9261 | /* Add it to the queue. */ | |
9262 | queue_comp_unit (per_cu, per_objfile, pretend_language); | |
9263 | queued = true; | |
9264 | } | |
9265 | ||
0907af0c DE |
9266 | /* If the compilation unit is already loaded, just mark it as |
9267 | used. */ | |
7188ed02 SM |
9268 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9269 | if (cu != nullptr) | |
616c069a | 9270 | cu->last_used = 0; |
0907af0c | 9271 | |
616c069a SM |
9272 | /* Ask the caller to load the CU's DIEs if the CU got enqueued for expansion |
9273 | and the DIEs are not already loaded. */ | |
9274 | return queued && cu == nullptr; | |
0907af0c DE |
9275 | } |
9276 | ||
10b3939b DJ |
9277 | /* Process the queue. */ |
9278 | ||
9279 | static void | |
976ca316 | 9280 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 9281 | { |
6f738b01 SM |
9282 | dwarf_read_debug_printf ("Expanding one or more symtabs of objfile %s ...", |
9283 | objfile_name (per_objfile->objfile)); | |
45cfd468 | 9284 | |
03dd20cc DJ |
9285 | /* The queue starts out with one item, but following a DIE reference |
9286 | may load a new CU, adding it to the end of the queue. */ | |
08ac5771 | 9287 | while (!per_objfile->per_bfd->queue->empty ()) |
10b3939b | 9288 | { |
08ac5771 | 9289 | dwarf2_queue_item &item = per_objfile->per_bfd->queue->front (); |
7188ed02 | 9290 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 9291 | |
976ca316 | 9292 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 9293 | { |
976ca316 | 9294 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 9295 | |
7188ed02 SM |
9296 | /* Skip dummy CUs. */ |
9297 | if (cu != nullptr) | |
73be47f5 | 9298 | { |
7188ed02 SM |
9299 | unsigned int debug_print_threshold; |
9300 | char buf[100]; | |
9301 | ||
9302 | if (per_cu->is_debug_types) | |
9303 | { | |
9304 | struct signatured_type *sig_type = | |
9305 | (struct signatured_type *) per_cu; | |
9306 | ||
9307 | sprintf (buf, "TU %s at offset %s", | |
9308 | hex_string (sig_type->signature), | |
9309 | sect_offset_str (per_cu->sect_off)); | |
9310 | /* There can be 100s of TUs. | |
9311 | Only print them in verbose mode. */ | |
9312 | debug_print_threshold = 2; | |
9313 | } | |
9314 | else | |
9315 | { | |
9316 | sprintf (buf, "CU at offset %s", | |
9317 | sect_offset_str (per_cu->sect_off)); | |
9318 | debug_print_threshold = 1; | |
9319 | } | |
247f5c4f | 9320 | |
7188ed02 | 9321 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9322 | dwarf_read_debug_printf ("Expanding symtab of %s", buf); |
f4dc4d17 | 9323 | |
7188ed02 SM |
9324 | if (per_cu->is_debug_types) |
9325 | process_full_type_unit (cu, item.pretend_language); | |
9326 | else | |
9327 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9328 | |
7188ed02 | 9329 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9330 | dwarf_read_debug_printf ("Done expanding %s", buf); |
7188ed02 | 9331 | } |
f4dc4d17 | 9332 | } |
10b3939b | 9333 | |
7188ed02 | 9334 | per_cu->queued = 0; |
08ac5771 | 9335 | per_objfile->per_bfd->queue->pop (); |
10b3939b DJ |
9336 | } |
9337 | ||
6f738b01 SM |
9338 | dwarf_read_debug_printf ("Done expanding symtabs of %s.", |
9339 | objfile_name (per_objfile->objfile)); | |
10b3939b DJ |
9340 | } |
9341 | ||
10b3939b DJ |
9342 | /* Read in full symbols for PST, and anything it depends on. */ |
9343 | ||
8566b89b TT |
9344 | void |
9345 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9346 | { |
af758d11 | 9347 | gdb_assert (!readin_p (objfile)); |
95554aad | 9348 | |
17ee85fc TT |
9349 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9350 | free_cached_comp_units freer (per_objfile); | |
48993951 | 9351 | expand_dependencies (objfile); |
aaa75496 | 9352 | |
97a1449a | 9353 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 9354 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9355 | } |
9356 | ||
af758d11 SM |
9357 | /* See psympriv.h. */ |
9358 | ||
9359 | bool | |
9360 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9361 | { | |
9362 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9363 | return per_objfile->symtab_set_p (per_cu_data); | |
9364 | } | |
9365 | ||
9366 | /* See psympriv.h. */ | |
9367 | ||
9368 | compunit_symtab * | |
9369 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9370 | { | |
9371 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9372 | return per_objfile->get_symtab (per_cu_data); | |
9373 | } | |
9374 | ||
dee91e82 DE |
9375 | /* Trivial hash function for die_info: the hash value of a DIE |
9376 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9377 | |
dee91e82 DE |
9378 | static hashval_t |
9379 | die_hash (const void *item) | |
10b3939b | 9380 | { |
9a3c8263 | 9381 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9382 | |
9c541725 | 9383 | return to_underlying (die->sect_off); |
dee91e82 | 9384 | } |
63d06c5c | 9385 | |
dee91e82 DE |
9386 | /* Trivial comparison function for die_info structures: two DIEs |
9387 | are equal if they have the same offset. */ | |
98bfdba5 | 9388 | |
dee91e82 DE |
9389 | static int |
9390 | die_eq (const void *item_lhs, const void *item_rhs) | |
9391 | { | |
9a3c8263 SM |
9392 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9393 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9394 | |
9c541725 | 9395 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9396 | } |
c906108c | 9397 | |
4a636814 SM |
9398 | /* Load the DIEs associated with PER_CU into memory. |
9399 | ||
9400 | In some cases, the caller, while reading partial symbols, will need to load | |
9401 | the full symbols for the CU for some reason. It will already have a | |
9402 | dwarf2_cu object for THIS_CU and pass it as EXISTING_CU, so it can be re-used | |
9403 | rather than creating a new one. */ | |
c906108c | 9404 | |
dee91e82 | 9405 | static void |
ab432490 SM |
9406 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9407 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 9408 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
9409 | bool skip_partial, |
9410 | enum language pretend_language) | |
dee91e82 | 9411 | { |
c0ab21c2 TT |
9412 | gdb_assert (! this_cu->is_debug_types); |
9413 | ||
7188ed02 | 9414 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); |
c0ab21c2 TT |
9415 | if (reader.dummy_p) |
9416 | return; | |
9417 | ||
9418 | struct dwarf2_cu *cu = reader.cu; | |
9419 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9420 | |
dee91e82 DE |
9421 | gdb_assert (cu->die_hash == NULL); |
9422 | cu->die_hash = | |
9423 | htab_create_alloc_ex (cu->header.length / 12, | |
9424 | die_hash, | |
9425 | die_eq, | |
9426 | NULL, | |
9427 | &cu->comp_unit_obstack, | |
9428 | hashtab_obstack_allocate, | |
9429 | dummy_obstack_deallocate); | |
e142c38c | 9430 | |
3e225074 | 9431 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9432 | reader.comp_unit_die->child |
9433 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9434 | &info_ptr, reader.comp_unit_die); | |
9435 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9436 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9437 | |
9438 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9439 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9440 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9441 | or we won't be able to build types correctly. |
9442 | Similarly, if we do not read the producer, we can not apply | |
9443 | producer-specific interpretation. */ | |
c0ab21c2 | 9444 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9445 | |
9446 | reader.keep (); | |
10b3939b DJ |
9447 | } |
9448 | ||
3da10d80 KS |
9449 | /* Add a DIE to the delayed physname list. */ |
9450 | ||
9451 | static void | |
9452 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9453 | const char *name, struct die_info *die, | |
9454 | struct dwarf2_cu *cu) | |
9455 | { | |
9456 | struct delayed_method_info mi; | |
9457 | mi.type = type; | |
9458 | mi.fnfield_index = fnfield_index; | |
9459 | mi.index = index; | |
9460 | mi.name = name; | |
9461 | mi.die = die; | |
c89b44cd | 9462 | cu->method_list.push_back (mi); |
3da10d80 KS |
9463 | } |
9464 | ||
3693fdb3 PA |
9465 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9466 | "const" / "volatile". If so, decrements LEN by the length of the | |
9467 | modifier and return true. Otherwise return false. */ | |
9468 | ||
9469 | template<size_t N> | |
9470 | static bool | |
9471 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9472 | { | |
9473 | size_t mod_len = sizeof (mod) - 1; | |
9474 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9475 | { | |
9476 | len -= mod_len; | |
9477 | return true; | |
9478 | } | |
9479 | return false; | |
9480 | } | |
9481 | ||
3da10d80 KS |
9482 | /* Compute the physnames of any methods on the CU's method list. |
9483 | ||
9484 | The computation of method physnames is delayed in order to avoid the | |
9485 | (bad) condition that one of the method's formal parameters is of an as yet | |
9486 | incomplete type. */ | |
9487 | ||
9488 | static void | |
9489 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9490 | { | |
3693fdb3 | 9491 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9492 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9493 | return; |
9494 | gdb_assert (cu->language == language_cplus); | |
9495 | ||
52941706 | 9496 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9497 | { |
1d06ead6 | 9498 | const char *physname; |
3da10d80 | 9499 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9500 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9501 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9502 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9503 | = physname ? physname : ""; |
3693fdb3 PA |
9504 | |
9505 | /* Since there's no tag to indicate whether a method is a | |
9506 | const/volatile overload, extract that information out of the | |
9507 | demangled name. */ | |
9508 | if (physname != NULL) | |
9509 | { | |
9510 | size_t len = strlen (physname); | |
9511 | ||
9512 | while (1) | |
9513 | { | |
9514 | if (physname[len] == ')') /* shortcut */ | |
9515 | break; | |
9516 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9517 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9518 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9519 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9520 | else |
9521 | break; | |
9522 | } | |
9523 | } | |
3da10d80 | 9524 | } |
c89b44cd TT |
9525 | |
9526 | /* The list is no longer needed. */ | |
9527 | cu->method_list.clear (); | |
3da10d80 KS |
9528 | } |
9529 | ||
a766d390 DE |
9530 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9531 | and it's not clear if/how imported objects will appear. | |
9532 | To keep Go support simple until that's worked out, | |
9533 | go back through what we've read and create something usable. | |
9534 | We could do this while processing each DIE, and feels kinda cleaner, | |
9535 | but that way is more invasive. | |
9536 | This is to, for example, allow the user to type "p var" or "b main" | |
9537 | without having to specify the package name, and allow lookups | |
9538 | of module.object to work in contexts that use the expression | |
9539 | parser. */ | |
9540 | ||
9541 | static void | |
9542 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9543 | { | |
421d1616 | 9544 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9545 | struct pending *list; |
9546 | int i; | |
9547 | ||
c24bdb02 | 9548 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9549 | list != NULL; |
9550 | list = list->next) | |
a766d390 DE |
9551 | { |
9552 | for (i = 0; i < list->nsyms; ++i) | |
9553 | { | |
9554 | struct symbol *sym = list->symbol[i]; | |
9555 | ||
c1b5c1eb | 9556 | if (sym->language () == language_go |
a766d390 DE |
9557 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9558 | { | |
421d1616 TT |
9559 | gdb::unique_xmalloc_ptr<char> this_package_name |
9560 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9561 | |
9562 | if (this_package_name == NULL) | |
9563 | continue; | |
9564 | if (package_name == NULL) | |
421d1616 | 9565 | package_name = std::move (this_package_name); |
a766d390 DE |
9566 | else |
9567 | { | |
5e22e966 | 9568 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9569 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9570 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9571 | (symbol_symtab (sym) != NULL |
9572 | ? symtab_to_filename_for_display | |
9573 | (symbol_symtab (sym)) | |
e3b94546 | 9574 | : objfile_name (objfile)), |
421d1616 | 9575 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9576 | } |
9577 | } | |
9578 | } | |
9579 | } | |
9580 | ||
9581 | if (package_name != NULL) | |
9582 | { | |
5e22e966 | 9583 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9584 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9585 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9586 | saved_package_name); | |
a766d390 DE |
9587 | struct symbol *sym; |
9588 | ||
8c14c3a3 | 9589 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9590 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9591 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9592 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9593 | e.g., "main" finds the "main" module and not C's main(). */ | |
9594 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9595 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9596 | SYMBOL_TYPE (sym) = type; |
9597 | ||
c24bdb02 | 9598 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9599 | } |
9600 | } | |
9601 | ||
c9317f21 TT |
9602 | /* Allocate a fully-qualified name consisting of the two parts on the |
9603 | obstack. */ | |
9604 | ||
9605 | static const char * | |
9606 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9607 | { | |
9608 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9609 | } | |
9610 | ||
9c6a1327 TT |
9611 | /* A helper that allocates a variant part to attach to a Rust enum |
9612 | type. OBSTACK is where the results should be allocated. TYPE is | |
9613 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
57d02173 TT |
9614 | discriminant. It must be the index of one of the fields of TYPE, |
9615 | or -1 to mean there is no discriminant (univariant enum). | |
9c6a1327 TT |
9616 | DEFAULT_INDEX is the index of the default field; or -1 if there is |
9617 | no default. RANGES is indexed by "effective" field number (the | |
9618 | field index, but omitting the discriminant and default fields) and | |
9619 | must hold the discriminant values used by the variants. Note that | |
9620 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9621 | already allocated on it, or static. */ | |
c9317f21 | 9622 | |
9c6a1327 TT |
9623 | static void |
9624 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9625 | int discriminant_index, int default_index, | |
9626 | gdb::array_view<discriminant_range> ranges) | |
9627 | { | |
57d02173 TT |
9628 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. */ |
9629 | gdb_assert (discriminant_index == -1 | |
9630 | || (discriminant_index >= 0 | |
9631 | && discriminant_index < type->num_fields ())); | |
c9317f21 | 9632 | gdb_assert (default_index == -1 |
1f704f76 | 9633 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9634 | |
9c6a1327 | 9635 | /* We have one variant for each non-discriminant field. */ |
57d02173 TT |
9636 | int n_variants = type->num_fields (); |
9637 | if (discriminant_index != -1) | |
9638 | --n_variants; | |
c9317f21 | 9639 | |
9c6a1327 TT |
9640 | variant *variants = new (obstack) variant[n_variants]; |
9641 | int var_idx = 0; | |
9642 | int range_idx = 0; | |
1f704f76 | 9643 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9644 | { |
9645 | if (i == discriminant_index) | |
9646 | continue; | |
c9317f21 | 9647 | |
9c6a1327 TT |
9648 | variants[var_idx].first_field = i; |
9649 | variants[var_idx].last_field = i + 1; | |
9650 | ||
9651 | /* The default field does not need a range, but other fields do. | |
9652 | We skipped the discriminant above. */ | |
9653 | if (i != default_index) | |
9654 | { | |
9655 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9656 | ++range_idx; | |
9657 | } | |
c9317f21 | 9658 | |
9c6a1327 TT |
9659 | ++var_idx; |
9660 | } | |
9661 | ||
9662 | gdb_assert (range_idx == ranges.size ()); | |
9663 | gdb_assert (var_idx == n_variants); | |
9664 | ||
9665 | variant_part *part = new (obstack) variant_part; | |
9666 | part->discriminant_index = discriminant_index; | |
57d02173 TT |
9667 | /* If there is no discriminant, then whether it is signed is of no |
9668 | consequence. */ | |
9669 | part->is_unsigned | |
9670 | = (discriminant_index == -1 | |
9671 | ? false | |
c6d940a9 | 9672 | : type->field (discriminant_index).type ()->is_unsigned ()); |
9c6a1327 TT |
9673 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9674 | ||
9675 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9676 | gdb::array_view<variant_part> *prop_value | |
9677 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9678 | |
9c6a1327 | 9679 | struct dynamic_prop prop; |
8c2e4e06 | 9680 | prop.set_variant_parts (prop_value); |
9c6a1327 | 9681 | |
5c54719c | 9682 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9683 | } |
9684 | ||
9685 | /* Some versions of rustc emitted enums in an unusual way. | |
9686 | ||
9687 | Ordinary enums were emitted as unions. The first element of each | |
9688 | structure in the union was named "RUST$ENUM$DISR". This element | |
9689 | held the discriminant. | |
9690 | ||
9691 | These versions of Rust also implemented the "non-zero" | |
9692 | optimization. When the enum had two values, and one is empty and | |
9693 | the other holds a pointer that cannot be zero, the pointer is used | |
9694 | as the discriminant, with a zero value meaning the empty variant. | |
9695 | Here, the union's first member is of the form | |
9696 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9697 | where the fieldnos are the indices of the fields that should be | |
9698 | traversed in order to find the field (which may be several fields deep) | |
9699 | and the variantname is the name of the variant of the case when the | |
9700 | field is zero. | |
9701 | ||
9702 | This function recognizes whether TYPE is of one of these forms, | |
9703 | and, if so, smashes it to be a variant type. */ | |
9704 | ||
9705 | static void | |
9706 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9707 | { | |
78134374 | 9708 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9709 | |
9710 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9711 | if (type->num_fields () == 0) |
c9317f21 TT |
9712 | return; |
9713 | ||
9714 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9715 | if (type->num_fields () == 1 |
c9317f21 TT |
9716 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9717 | { | |
9718 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9719 | ||
9720 | /* Decode the field name to find the offset of the | |
9721 | discriminant. */ | |
9722 | ULONGEST bit_offset = 0; | |
940da03e | 9723 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9724 | while (name[0] >= '0' && name[0] <= '9') |
9725 | { | |
9726 | char *tail; | |
9727 | unsigned long index = strtoul (name, &tail, 10); | |
9728 | name = tail; | |
9729 | if (*name != '$' | |
1f704f76 | 9730 | || index >= field_type->num_fields () |
c9317f21 TT |
9731 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9732 | != FIELD_LOC_KIND_BITPOS)) | |
9733 | { | |
b98664d3 | 9734 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9735 | "[in module %s]"), |
9736 | TYPE_FIELD_NAME (type, 0), | |
9737 | objfile_name (objfile)); | |
9738 | return; | |
9739 | } | |
9740 | ++name; | |
9741 | ||
9742 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9743 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9744 | } |
9745 | ||
9c6a1327 TT |
9746 | /* Smash this type to be a structure type. We have to do this |
9747 | because the type has already been recorded. */ | |
67607e24 | 9748 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9749 | type->set_num_fields (3); |
9c6a1327 | 9750 | /* Save the field we care about. */ |
ceacbf6e | 9751 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9752 | type->set_fields |
9753 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9754 | |
9c6a1327 | 9755 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9756 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9757 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9758 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9759 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9760 | |
9761 | /* The order of fields doesn't really matter, so put the real | |
9762 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9763 | type->field (1) = saved_field; |
9c6a1327 | 9764 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9765 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9766 | type->field (1).type ()->set_name | |
7d93a1e0 | 9767 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9768 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9769 | |
9770 | const char *dataless_name | |
7d93a1e0 | 9771 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9772 | name); |
9773 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9774 | dataless_name); | |
5d14b6e5 | 9775 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9776 | /* NAME points into the original discriminant name, which |
9777 | already has the correct lifetime. */ | |
9c6a1327 | 9778 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9779 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9780 | |
9c6a1327 TT |
9781 | /* Indicate that this is a variant type. */ |
9782 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9783 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9784 | } |
77c2dba3 TT |
9785 | /* A union with a single anonymous field is probably an old-style |
9786 | univariant enum. */ | |
1f704f76 | 9787 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9788 | { |
c9317f21 TT |
9789 | /* Smash this type to be a structure type. We have to do this |
9790 | because the type has already been recorded. */ | |
67607e24 | 9791 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9792 | |
940da03e | 9793 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9794 | const char *variant_name |
7d93a1e0 | 9795 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9796 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9797 | field_type->set_name |
9798 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9799 | type->name (), variant_name)); |
57d02173 TT |
9800 | |
9801 | alloc_rust_variant (&objfile->objfile_obstack, type, -1, 0, {}); | |
c9317f21 TT |
9802 | } |
9803 | else | |
9804 | { | |
9805 | struct type *disr_type = nullptr; | |
1f704f76 | 9806 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9807 | { |
940da03e | 9808 | disr_type = type->field (i).type (); |
c9317f21 | 9809 | |
78134374 | 9810 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9811 | { |
9812 | /* All fields of a true enum will be structs. */ | |
9813 | return; | |
9814 | } | |
1f704f76 | 9815 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9816 | { |
9817 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9818 | disr_type = nullptr; |
c9317f21 TT |
9819 | } |
9820 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9821 | "RUST$ENUM$DISR") != 0) | |
9822 | { | |
9823 | /* Not a Rust enum. */ | |
9824 | return; | |
9825 | } | |
9826 | else | |
9827 | { | |
9828 | /* Found one. */ | |
9829 | break; | |
9830 | } | |
9831 | } | |
9832 | ||
9833 | /* If we got here without a discriminant, then it's probably | |
9834 | just a union. */ | |
9835 | if (disr_type == nullptr) | |
9836 | return; | |
9837 | ||
9838 | /* Smash this type to be a structure type. We have to do this | |
9839 | because the type has already been recorded. */ | |
67607e24 | 9840 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9841 | |
9c6a1327 | 9842 | /* Make space for the discriminant field. */ |
ceacbf6e | 9843 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9844 | field *new_fields |
1f704f76 | 9845 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9846 | * sizeof (struct field))); |
80fc5e77 | 9847 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9848 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9849 | type->set_fields (new_fields); |
1f704f76 | 9850 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9851 | |
9852 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9853 | type->field (0) = *disr_field; |
9c6a1327 TT |
9854 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9855 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9856 | |
9857 | /* We need a way to find the correct discriminant given a | |
9858 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9859 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9860 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9861 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9862 | { |
9863 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9864 | { | |
9865 | const char *name | |
9866 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9867 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9868 | } | |
9869 | } | |
9870 | ||
1f704f76 | 9871 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9872 | /* We don't need a range entry for the discriminant, but we do |
9873 | need one for every other field, as there is no default | |
9874 | variant. */ | |
9875 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9876 | discriminant_range, | |
9877 | n_fields - 1); | |
c9317f21 TT |
9878 | /* Skip the discriminant here. */ |
9879 | for (int i = 1; i < n_fields; ++i) | |
9880 | { | |
9881 | /* Find the final word in the name of this variant's type. | |
9882 | That name can be used to look up the correct | |
9883 | discriminant. */ | |
9884 | const char *variant_name | |
940da03e | 9885 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9886 | |
9887 | auto iter = discriminant_map.find (variant_name); | |
9888 | if (iter != discriminant_map.end ()) | |
9c6a1327 | 9889 | { |
57d02173 TT |
9890 | ranges[i - 1].low = iter->second; |
9891 | ranges[i - 1].high = iter->second; | |
9c6a1327 | 9892 | } |
c9317f21 | 9893 | |
57d02173 TT |
9894 | /* In Rust, each element should have the size of the |
9895 | enclosing enum. */ | |
9896 | TYPE_LENGTH (type->field (i).type ()) = TYPE_LENGTH (type); | |
9897 | ||
bedda9ac | 9898 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9899 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9900 | if (sub_type->num_fields () > 0) |
bedda9ac | 9901 | { |
5e33d5f4 | 9902 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9903 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9904 | } |
9c6a1327 | 9905 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9906 | sub_type->set_name |
9907 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9908 | type->name (), variant_name)); |
c9317f21 | 9909 | } |
9c6a1327 TT |
9910 | |
9911 | /* Indicate that this is a variant type. */ | |
a1520ad8 | 9912 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, -1, |
9c6a1327 TT |
9913 | gdb::array_view<discriminant_range> (ranges, |
9914 | n_fields - 1)); | |
c9317f21 TT |
9915 | } |
9916 | } | |
9917 | ||
9918 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9919 | ||
9920 | static void | |
9921 | rust_union_quirks (struct dwarf2_cu *cu) | |
9922 | { | |
9923 | gdb_assert (cu->language == language_rust); | |
52941706 | 9924 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9925 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9926 | /* We don't need this any more. */ |
9927 | cu->rust_unions.clear (); | |
c9317f21 TT |
9928 | } |
9929 | ||
8adb8487 TT |
9930 | /* See read.h. */ |
9931 | ||
9932 | type_unit_group_unshareable * | |
9933 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9934 | { | |
9935 | auto iter = this->m_type_units.find (tu_group); | |
9936 | if (iter != this->m_type_units.end ()) | |
9937 | return iter->second.get (); | |
9938 | ||
9939 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9940 | type_unit_group_unshareable *result = uniq.get (); | |
9941 | this->m_type_units[tu_group] = std::move (uniq); | |
9942 | return result; | |
9943 | } | |
9944 | ||
e286671b TT |
9945 | struct type * |
9946 | dwarf2_per_objfile::get_type_for_signatured_type | |
9947 | (signatured_type *sig_type) const | |
9948 | { | |
9949 | auto iter = this->m_type_map.find (sig_type); | |
9950 | if (iter == this->m_type_map.end ()) | |
9951 | return nullptr; | |
9952 | ||
9953 | return iter->second; | |
9954 | } | |
9955 | ||
9956 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9957 | (signatured_type *sig_type, struct type *type) | |
9958 | { | |
9959 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9960 | ||
9961 | this->m_type_map[sig_type] = type; | |
9962 | } | |
9963 | ||
95554aad TT |
9964 | /* A helper function for computing the list of all symbol tables |
9965 | included by PER_CU. */ | |
9966 | ||
9967 | static void | |
4c39bc03 | 9968 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9969 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9970 | dwarf2_per_cu_data *per_cu, |
9971 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9972 | struct compunit_symtab *immediate_parent) |
95554aad | 9973 | { |
af758d11 | 9974 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9975 | if (*slot != NULL) |
9976 | { | |
9977 | /* This inclusion and its children have been processed. */ | |
9978 | return; | |
9979 | } | |
9980 | ||
9981 | *slot = per_cu; | |
af758d11 | 9982 | |
95554aad | 9983 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9984 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9985 | if (cust != NULL) |
ec94af83 DE |
9986 | { |
9987 | /* If this is a type unit only add its symbol table if we haven't | |
9988 | seen it yet (type unit per_cu's can share symtabs). */ | |
9989 | if (per_cu->is_debug_types) | |
9990 | { | |
43f3e411 | 9991 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9992 | if (*slot == NULL) |
9993 | { | |
43f3e411 | 9994 | *slot = cust; |
4c39bc03 | 9995 | result->push_back (cust); |
43f3e411 DE |
9996 | if (cust->user == NULL) |
9997 | cust->user = immediate_parent; | |
ec94af83 DE |
9998 | } |
9999 | } | |
10000 | else | |
f9125b6c | 10001 | { |
4c39bc03 | 10002 | result->push_back (cust); |
43f3e411 DE |
10003 | if (cust->user == NULL) |
10004 | cust->user = immediate_parent; | |
f9125b6c | 10005 | } |
ec94af83 | 10006 | } |
95554aad | 10007 | |
ae640021 AB |
10008 | if (!per_cu->imported_symtabs_empty ()) |
10009 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
10010 | { | |
10011 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
10012 | all_type_symtabs, ptr, per_objfile, |
10013 | cust); | |
ae640021 | 10014 | } |
95554aad TT |
10015 | } |
10016 | ||
43f3e411 | 10017 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10018 | PER_CU. */ |
10019 | ||
10020 | static void | |
43182c09 SM |
10021 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
10022 | dwarf2_per_objfile *per_objfile) | |
95554aad | 10023 | { |
f4dc4d17 DE |
10024 | gdb_assert (! per_cu->is_debug_types); |
10025 | ||
ae640021 | 10026 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 10027 | { |
ae640021 | 10028 | int len; |
4c39bc03 | 10029 | std::vector<compunit_symtab *> result_symtabs; |
43182c09 | 10030 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
10031 | |
10032 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10033 | if (cust == NULL) |
95554aad TT |
10034 | return; |
10035 | ||
280a9412 TT |
10036 | htab_up all_children (htab_create_alloc (1, htab_hash_pointer, |
10037 | htab_eq_pointer, | |
10038 | NULL, xcalloc, xfree)); | |
10039 | htab_up all_type_symtabs (htab_create_alloc (1, htab_hash_pointer, | |
10040 | htab_eq_pointer, | |
10041 | NULL, xcalloc, xfree)); | |
95554aad | 10042 | |
ae640021 | 10043 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 | 10044 | { |
280a9412 TT |
10045 | recursively_compute_inclusions (&result_symtabs, all_children.get (), |
10046 | all_type_symtabs.get (), ptr, | |
10047 | per_objfile, cust); | |
ec94af83 | 10048 | } |
95554aad | 10049 | |
ec94af83 | 10050 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 10051 | len = result_symtabs.size (); |
43f3e411 | 10052 | cust->includes |
f6e649dd | 10053 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 10054 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
10055 | memcpy (cust->includes, result_symtabs.data (), |
10056 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 10057 | cust->includes[len] = NULL; |
95554aad TT |
10058 | } |
10059 | } | |
10060 | ||
10061 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10062 | read. */ | |
10063 | ||
10064 | static void | |
976ca316 | 10065 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 10066 | { |
976ca316 | 10067 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
10068 | { |
10069 | if (! iter->is_debug_types) | |
976ca316 | 10070 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 10071 | } |
95554aad | 10072 | |
976ca316 | 10073 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
10074 | } |
10075 | ||
8fc0b21d | 10076 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
10077 | already been loaded into memory. */ |
10078 | ||
10079 | static void | |
8fc0b21d | 10080 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 10081 | { |
976ca316 SM |
10082 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10083 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 10084 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 10085 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10086 | struct compunit_symtab *cust; |
10b3939b | 10087 | CORE_ADDR baseaddr; |
4359dff1 | 10088 | struct block *static_block; |
3e29f34a | 10089 | CORE_ADDR addr; |
10b3939b | 10090 | |
b3b3bada | 10091 | baseaddr = objfile->text_section_offset (); |
10b3939b | 10092 | |
c89b44cd TT |
10093 | /* Clear the list here in case something was left over. */ |
10094 | cu->method_list.clear (); | |
10b3939b | 10095 | |
95554aad TT |
10096 | cu->language = pretend_language; |
10097 | cu->language_defn = language_def (cu->language); | |
10098 | ||
1c47ec3e TV |
10099 | dwarf2_find_base_address (cu->dies, cu); |
10100 | ||
c906108c | 10101 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10102 | process_die (cu->dies, cu); |
c906108c | 10103 | |
a766d390 DE |
10104 | /* For now fudge the Go package. */ |
10105 | if (cu->language == language_go) | |
10106 | fixup_go_packaging (cu); | |
10107 | ||
5f48f8f3 | 10108 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
10109 | should be complete, and it should now be safe to compute all of the |
10110 | physnames. */ | |
10111 | compute_delayed_physnames (cu); | |
3da10d80 | 10112 | |
c9317f21 TT |
10113 | if (cu->language == language_rust) |
10114 | rust_union_quirks (cu); | |
10115 | ||
fae299cd DC |
10116 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10117 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10118 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10119 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10120 | |
3e29f34a | 10121 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 10122 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10123 | |
10124 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10125 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10126 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10127 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10128 | this comp unit. */ | |
10129 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10130 | ||
c24bdb02 | 10131 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
10132 | SECT_OFF_TEXT (objfile), |
10133 | 0); | |
c906108c | 10134 | |
43f3e411 | 10135 | if (cust != NULL) |
c906108c | 10136 | { |
df15bd07 | 10137 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10138 | |
8be455d7 JK |
10139 | /* Set symtab language to language from DW_AT_language. If the |
10140 | compilation is from a C file generated by language preprocessors, do | |
10141 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10142 | if (!(cu->language == language_c |
40e3ad0e | 10143 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10144 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10145 | |
10146 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10147 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10148 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10149 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10150 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10151 | |
10152 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10153 | needed, it would be wrong due to missing DW_AT_producer there. | |
10154 | ||
10155 | Still one can confuse GDB by using non-standard GCC compilation | |
10156 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 10157 | */ |
ab260dad | 10158 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10159 | cust->locations_valid = 1; |
e0d00bc7 JK |
10160 | |
10161 | if (gcc_4_minor >= 5) | |
43f3e411 | 10162 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10163 | |
43f3e411 | 10164 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10165 | } |
9291a0cd | 10166 | |
976ca316 | 10167 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 10168 | |
95554aad | 10169 | /* Push it for inclusion processing later. */ |
976ca316 | 10170 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
10171 | |
10172 | /* Not needed any more. */ | |
c24bdb02 | 10173 | cu->reset_builder (); |
f4dc4d17 | 10174 | } |
45cfd468 | 10175 | |
8fc0b21d | 10176 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
10177 | already been loaded into memory. */ |
10178 | ||
10179 | static void | |
8fc0b21d | 10180 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
10181 | enum language pretend_language) |
10182 | { | |
976ca316 SM |
10183 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10184 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 10185 | struct compunit_symtab *cust; |
0186c6a7 DE |
10186 | struct signatured_type *sig_type; |
10187 | ||
8fc0b21d SM |
10188 | gdb_assert (cu->per_cu->is_debug_types); |
10189 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 10190 | |
c89b44cd TT |
10191 | /* Clear the list here in case something was left over. */ |
10192 | cu->method_list.clear (); | |
f4dc4d17 | 10193 | |
f4dc4d17 DE |
10194 | cu->language = pretend_language; |
10195 | cu->language_defn = language_def (cu->language); | |
10196 | ||
10197 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10198 | process_die (cu->dies, cu); | |
10199 | ||
10200 | /* For now fudge the Go package. */ | |
10201 | if (cu->language == language_go) | |
10202 | fixup_go_packaging (cu); | |
10203 | ||
5f48f8f3 | 10204 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10205 | should be complete, and it should now be safe to compute all of the |
10206 | physnames. */ | |
10207 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10208 | |
c9317f21 TT |
10209 | if (cu->language == language_rust) |
10210 | rust_union_quirks (cu); | |
10211 | ||
f4dc4d17 DE |
10212 | /* TUs share symbol tables. |
10213 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10214 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10215 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 10216 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 10217 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 10218 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 10219 | { |
c24bdb02 KS |
10220 | buildsym_compunit *builder = cu->get_builder (); |
10221 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 10222 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 10223 | |
43f3e411 | 10224 | if (cust != NULL) |
f4dc4d17 DE |
10225 | { |
10226 | /* Set symtab language to language from DW_AT_language. If the | |
10227 | compilation is from a C file generated by language preprocessors, | |
10228 | do not set the language if it was already deduced by | |
10229 | start_subfile. */ | |
43f3e411 DE |
10230 | if (!(cu->language == language_c |
10231 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10232 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10233 | } |
10234 | } | |
10235 | else | |
10236 | { | |
c24bdb02 | 10237 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 10238 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
10239 | } |
10240 | ||
976ca316 | 10241 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
10242 | |
10243 | /* Not needed any more. */ | |
c24bdb02 | 10244 | cu->reset_builder (); |
c906108c SS |
10245 | } |
10246 | ||
95554aad TT |
10247 | /* Process an imported unit DIE. */ |
10248 | ||
10249 | static void | |
10250 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10251 | { | |
10252 | struct attribute *attr; | |
10253 | ||
f4dc4d17 DE |
10254 | /* For now we don't handle imported units in type units. */ |
10255 | if (cu->per_cu->is_debug_types) | |
10256 | { | |
10257 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10258 | " supported in type units [in module %s]"), | |
5e22e966 | 10259 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
10260 | } |
10261 | ||
95554aad TT |
10262 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10263 | if (attr != NULL) | |
10264 | { | |
0826b30a | 10265 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 10266 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 10267 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 10268 | dwarf2_per_cu_data *per_cu |
ab432490 | 10269 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 10270 | |
58990295 TV |
10271 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
10272 | into another compilation unit, at root level. Regard this as a hint, | |
10273 | and ignore it. */ | |
10274 | if (die->parent && die->parent->parent == NULL | |
10275 | && per_cu->unit_type == DW_UT_compile | |
10276 | && per_cu->lang == language_cplus) | |
10277 | return; | |
10278 | ||
69d751e3 | 10279 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 10280 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
10281 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
10282 | false, cu->language); | |
95554aad | 10283 | |
ae640021 | 10284 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10285 | } |
10286 | } | |
10287 | ||
4c8aa72d PA |
10288 | /* RAII object that represents a process_die scope: i.e., |
10289 | starts/finishes processing a DIE. */ | |
10290 | class process_die_scope | |
adde2bff | 10291 | { |
4c8aa72d PA |
10292 | public: |
10293 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10294 | : m_die (die), m_cu (cu) | |
10295 | { | |
10296 | /* We should only be processing DIEs not already in process. */ | |
10297 | gdb_assert (!m_die->in_process); | |
10298 | m_die->in_process = true; | |
10299 | } | |
8c3cb9fa | 10300 | |
4c8aa72d PA |
10301 | ~process_die_scope () |
10302 | { | |
10303 | m_die->in_process = false; | |
10304 | ||
10305 | /* If we're done processing the DIE for the CU that owns the line | |
10306 | header, we don't need the line header anymore. */ | |
10307 | if (m_cu->line_header_die_owner == m_die) | |
10308 | { | |
10309 | delete m_cu->line_header; | |
10310 | m_cu->line_header = NULL; | |
10311 | m_cu->line_header_die_owner = NULL; | |
10312 | } | |
10313 | } | |
10314 | ||
10315 | private: | |
10316 | die_info *m_die; | |
10317 | dwarf2_cu *m_cu; | |
10318 | }; | |
adde2bff | 10319 | |
c906108c SS |
10320 | /* Process a die and its children. */ |
10321 | ||
10322 | static void | |
e7c27a73 | 10323 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10324 | { |
4c8aa72d | 10325 | process_die_scope scope (die, cu); |
adde2bff | 10326 | |
c906108c SS |
10327 | switch (die->tag) |
10328 | { | |
10329 | case DW_TAG_padding: | |
10330 | break; | |
10331 | case DW_TAG_compile_unit: | |
95554aad | 10332 | case DW_TAG_partial_unit: |
e7c27a73 | 10333 | read_file_scope (die, cu); |
c906108c | 10334 | break; |
348e048f DE |
10335 | case DW_TAG_type_unit: |
10336 | read_type_unit_scope (die, cu); | |
10337 | break; | |
c906108c | 10338 | case DW_TAG_subprogram: |
0a4b0913 AB |
10339 | /* Nested subprograms in Fortran get a prefix. */ |
10340 | if (cu->language == language_fortran | |
10341 | && die->parent != NULL | |
10342 | && die->parent->tag == DW_TAG_subprogram) | |
10343 | cu->processing_has_namespace_info = true; | |
10344 | /* Fall through. */ | |
c906108c | 10345 | case DW_TAG_inlined_subroutine: |
edb3359d | 10346 | read_func_scope (die, cu); |
c906108c SS |
10347 | break; |
10348 | case DW_TAG_lexical_block: | |
14898363 L |
10349 | case DW_TAG_try_block: |
10350 | case DW_TAG_catch_block: | |
e7c27a73 | 10351 | read_lexical_block_scope (die, cu); |
c906108c | 10352 | break; |
216f72a1 | 10353 | case DW_TAG_call_site: |
96408a79 SA |
10354 | case DW_TAG_GNU_call_site: |
10355 | read_call_site_scope (die, cu); | |
10356 | break; | |
c906108c | 10357 | case DW_TAG_class_type: |
680b30c7 | 10358 | case DW_TAG_interface_type: |
c906108c SS |
10359 | case DW_TAG_structure_type: |
10360 | case DW_TAG_union_type: | |
134d01f1 | 10361 | process_structure_scope (die, cu); |
c906108c SS |
10362 | break; |
10363 | case DW_TAG_enumeration_type: | |
134d01f1 | 10364 | process_enumeration_scope (die, cu); |
c906108c | 10365 | break; |
134d01f1 | 10366 | |
f792889a DJ |
10367 | /* These dies have a type, but processing them does not create |
10368 | a symbol or recurse to process the children. Therefore we can | |
10369 | read them on-demand through read_type_die. */ | |
c906108c | 10370 | case DW_TAG_subroutine_type: |
72019c9c | 10371 | case DW_TAG_set_type: |
c906108c | 10372 | case DW_TAG_pointer_type: |
c906108c | 10373 | case DW_TAG_ptr_to_member_type: |
c906108c | 10374 | case DW_TAG_reference_type: |
4297a3f0 | 10375 | case DW_TAG_rvalue_reference_type: |
c906108c | 10376 | case DW_TAG_string_type: |
c906108c | 10377 | break; |
134d01f1 | 10378 | |
d8f62e84 TT |
10379 | case DW_TAG_array_type: |
10380 | /* We only need to handle this case for Ada -- in other | |
10381 | languages, it's normal for the compiler to emit a typedef | |
10382 | instead. */ | |
10383 | if (cu->language != language_ada) | |
10384 | break; | |
10385 | /* FALLTHROUGH */ | |
c906108c | 10386 | case DW_TAG_base_type: |
a02abb62 | 10387 | case DW_TAG_subrange_type: |
cb249c71 | 10388 | case DW_TAG_typedef: |
134d01f1 | 10389 | /* Add a typedef symbol for the type definition, if it has a |
dda83cd7 | 10390 | DW_AT_name. */ |
f792889a | 10391 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10392 | break; |
c906108c | 10393 | case DW_TAG_common_block: |
e7c27a73 | 10394 | read_common_block (die, cu); |
c906108c SS |
10395 | break; |
10396 | case DW_TAG_common_inclusion: | |
10397 | break; | |
d9fa45fe | 10398 | case DW_TAG_namespace: |
9068261f | 10399 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10400 | read_namespace (die, cu); |
d9fa45fe | 10401 | break; |
5d7cb8df | 10402 | case DW_TAG_module: |
9068261f | 10403 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10404 | read_module (die, cu); |
10405 | break; | |
d9fa45fe | 10406 | case DW_TAG_imported_declaration: |
9068261f | 10407 | cu->processing_has_namespace_info = true; |
74921315 KS |
10408 | if (read_namespace_alias (die, cu)) |
10409 | break; | |
86a73007 TT |
10410 | /* The declaration is not a global namespace alias. */ |
10411 | /* Fall through. */ | |
d9fa45fe | 10412 | case DW_TAG_imported_module: |
9068261f | 10413 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10414 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10415 | || cu->language != language_fortran)) | |
b98664d3 | 10416 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10417 | dwarf_tag_name (die->tag)); |
10418 | read_import_statement (die, cu); | |
d9fa45fe | 10419 | break; |
95554aad TT |
10420 | |
10421 | case DW_TAG_imported_unit: | |
10422 | process_imported_unit_die (die, cu); | |
10423 | break; | |
10424 | ||
71a3c369 TT |
10425 | case DW_TAG_variable: |
10426 | read_variable (die, cu); | |
10427 | break; | |
10428 | ||
c906108c | 10429 | default: |
e7c27a73 | 10430 | new_symbol (die, NULL, cu); |
c906108c SS |
10431 | break; |
10432 | } | |
10433 | } | |
ca69b9e6 DE |
10434 | \f |
10435 | /* DWARF name computation. */ | |
c906108c | 10436 | |
94af9270 KS |
10437 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10438 | needs to have the name of the scope prepended to the name listed in the | |
10439 | die. */ | |
10440 | ||
10441 | static int | |
10442 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10443 | { | |
1c809c68 TT |
10444 | struct attribute *attr; |
10445 | ||
94af9270 KS |
10446 | switch (die->tag) |
10447 | { | |
10448 | case DW_TAG_namespace: | |
10449 | case DW_TAG_typedef: | |
10450 | case DW_TAG_class_type: | |
10451 | case DW_TAG_interface_type: | |
10452 | case DW_TAG_structure_type: | |
10453 | case DW_TAG_union_type: | |
10454 | case DW_TAG_enumeration_type: | |
10455 | case DW_TAG_enumerator: | |
10456 | case DW_TAG_subprogram: | |
08a76f8a | 10457 | case DW_TAG_inlined_subroutine: |
94af9270 | 10458 | case DW_TAG_member: |
74921315 | 10459 | case DW_TAG_imported_declaration: |
94af9270 KS |
10460 | return 1; |
10461 | ||
10462 | case DW_TAG_variable: | |
c2b0a229 | 10463 | case DW_TAG_constant: |
94af9270 KS |
10464 | /* We only need to prefix "globally" visible variables. These include |
10465 | any variable marked with DW_AT_external or any variable that | |
10466 | lives in a namespace. [Variables in anonymous namespaces | |
10467 | require prefixing, but they are not DW_AT_external.] */ | |
10468 | ||
10469 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10470 | { | |
10471 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10472 | |
94af9270 KS |
10473 | return die_needs_namespace (die_specification (die, &spec_cu), |
10474 | spec_cu); | |
10475 | } | |
10476 | ||
1c809c68 | 10477 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10478 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10479 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10480 | return 0; |
10481 | /* A variable in a lexical block of some kind does not need a | |
10482 | namespace, even though in C++ such variables may be external | |
10483 | and have a mangled name. */ | |
10484 | if (die->parent->tag == DW_TAG_lexical_block | |
10485 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10486 | || die->parent->tag == DW_TAG_catch_block |
10487 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10488 | return 0; |
10489 | return 1; | |
94af9270 KS |
10490 | |
10491 | default: | |
10492 | return 0; | |
10493 | } | |
10494 | } | |
10495 | ||
73b9be8b KS |
10496 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10497 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10498 | defined for the given DIE. */ | |
10499 | ||
10500 | static struct attribute * | |
10501 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10502 | { | |
10503 | struct attribute *attr; | |
10504 | ||
10505 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10506 | if (attr == NULL) | |
10507 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10508 | ||
10509 | return attr; | |
10510 | } | |
10511 | ||
10512 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10513 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10514 | defined for the given DIE. */ | |
10515 | ||
10516 | static const char * | |
10517 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10518 | { | |
10519 | const char *linkage_name; | |
10520 | ||
10521 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10522 | if (linkage_name == NULL) | |
10523 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10524 | ||
787de330 TT |
10525 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10526 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10527 | if (cu->language == language_rust && linkage_name != NULL | |
10528 | && strchr (linkage_name, '{') != NULL) | |
10529 | linkage_name = NULL; | |
10530 | ||
73b9be8b KS |
10531 | return linkage_name; |
10532 | } | |
10533 | ||
94af9270 | 10534 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10535 | compute the physname for the object, which include a method's: |
9c37b5ae | 10536 | - formal parameters (C++), |
a766d390 | 10537 | - receiver type (Go), |
a766d390 DE |
10538 | |
10539 | The term "physname" is a bit confusing. | |
10540 | For C++, for example, it is the demangled name. | |
10541 | For Go, for example, it's the mangled name. | |
94af9270 | 10542 | |
af6b7be1 JB |
10543 | For Ada, return the DIE's linkage name rather than the fully qualified |
10544 | name. PHYSNAME is ignored.. | |
10545 | ||
5989a64e | 10546 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10547 | canonicalized. */ |
94af9270 KS |
10548 | |
10549 | static const char * | |
15d034d0 TT |
10550 | dwarf2_compute_name (const char *name, |
10551 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10552 | int physname) |
10553 | { | |
5e22e966 | 10554 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10555 | |
94af9270 KS |
10556 | if (name == NULL) |
10557 | name = dwarf2_name (die, cu); | |
10558 | ||
2ee7123e DE |
10559 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10560 | but otherwise compute it by typename_concat inside GDB. | |
10561 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10562 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10563 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10564 | will set the demangled name to the result of dwarf2_full_name, and it is |
10565 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10566 | if (cu->language == language_ada |
10567 | || (cu->language == language_fortran && physname)) | |
10568 | { | |
10569 | /* For Ada unit, we prefer the linkage name over the name, as | |
10570 | the former contains the exported name, which the user expects | |
10571 | to be able to reference. Ideally, we want the user to be able | |
10572 | to reference this entity using either natural or linkage name, | |
10573 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10574 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10575 | |
2ee7123e DE |
10576 | if (linkage_name != NULL) |
10577 | return linkage_name; | |
f55ee35c JK |
10578 | } |
10579 | ||
94af9270 KS |
10580 | /* These are the only languages we know how to qualify names in. */ |
10581 | if (name != NULL | |
9c37b5ae | 10582 | && (cu->language == language_cplus |
c44af4eb TT |
10583 | || cu->language == language_fortran || cu->language == language_d |
10584 | || cu->language == language_rust)) | |
94af9270 KS |
10585 | { |
10586 | if (die_needs_namespace (die, cu)) | |
10587 | { | |
0d5cff50 | 10588 | const char *prefix; |
34a68019 | 10589 | const char *canonical_name = NULL; |
94af9270 | 10590 | |
d7e74731 PA |
10591 | string_file buf; |
10592 | ||
94af9270 | 10593 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10594 | if (*prefix != '\0') |
10595 | { | |
43816ebc TT |
10596 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10597 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10598 | |
43816ebc | 10599 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10600 | } |
10601 | else | |
d7e74731 | 10602 | buf.puts (name); |
94af9270 | 10603 | |
98bfdba5 PA |
10604 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10605 | as children with DW_TAG_template_type_param or | |
10606 | DW_TAG_value_type_param. If the latter, add them to the name | |
10607 | here. If the name already has template parameters, then | |
10608 | skip this step; some versions of GCC emit both, and | |
10609 | it is more efficient to use the pre-computed name. | |
10610 | ||
10611 | Something to keep in mind about this process: it is very | |
10612 | unlikely, or in some cases downright impossible, to produce | |
10613 | something that will match the mangled name of a function. | |
10614 | If the definition of the function has the same debug info, | |
10615 | we should be able to match up with it anyway. But fallbacks | |
10616 | using the minimal symbol, for instance to find a method | |
10617 | implemented in a stripped copy of libstdc++, will not work. | |
10618 | If we do not have debug info for the definition, we will have to | |
10619 | match them up some other way. | |
10620 | ||
10621 | When we do name matching there is a related problem with function | |
10622 | templates; two instantiated function templates are allowed to | |
10623 | differ only by their return types, which we do not add here. */ | |
10624 | ||
10625 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10626 | { | |
10627 | struct attribute *attr; | |
10628 | struct die_info *child; | |
10629 | int first = 1; | |
2c75ccb2 | 10630 | const language_defn *cplus_lang = language_def (cu->language); |
98bfdba5 PA |
10631 | |
10632 | die->building_fullname = 1; | |
10633 | ||
10634 | for (child = die->child; child != NULL; child = child->sibling) | |
10635 | { | |
10636 | struct type *type; | |
12df843f | 10637 | LONGEST value; |
d521ce57 | 10638 | const gdb_byte *bytes; |
98bfdba5 PA |
10639 | struct dwarf2_locexpr_baton *baton; |
10640 | struct value *v; | |
10641 | ||
10642 | if (child->tag != DW_TAG_template_type_param | |
10643 | && child->tag != DW_TAG_template_value_param) | |
10644 | continue; | |
10645 | ||
10646 | if (first) | |
10647 | { | |
d7e74731 | 10648 | buf.puts ("<"); |
98bfdba5 PA |
10649 | first = 0; |
10650 | } | |
10651 | else | |
d7e74731 | 10652 | buf.puts (", "); |
98bfdba5 PA |
10653 | |
10654 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10655 | if (attr == NULL) | |
10656 | { | |
b98664d3 | 10657 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10658 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10659 | continue; |
10660 | } | |
10661 | type = die_type (child, cu); | |
10662 | ||
10663 | if (child->tag == DW_TAG_template_type_param) | |
10664 | { | |
2c75ccb2 AB |
10665 | cplus_lang->print_type (type, "", &buf, -1, 0, |
10666 | &type_print_raw_options); | |
98bfdba5 PA |
10667 | continue; |
10668 | } | |
10669 | ||
10670 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10671 | if (attr == NULL) | |
10672 | { | |
b98664d3 | 10673 | complaint (_("template parameter missing " |
3e43a32a | 10674 | "DW_AT_const_value")); |
d7e74731 | 10675 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10676 | continue; |
10677 | } | |
10678 | ||
10679 | dwarf2_const_value_attr (attr, type, name, | |
10680 | &cu->comp_unit_obstack, cu, | |
10681 | &value, &bytes, &baton); | |
10682 | ||
20ce4123 | 10683 | if (type->has_no_signedness ()) |
98bfdba5 PA |
10684 | /* GDB prints characters as NUMBER 'CHAR'. If that's |
10685 | changed, this can use value_print instead. */ | |
2c75ccb2 | 10686 | cplus_lang->printchar (value, type, &buf); |
98bfdba5 PA |
10687 | else |
10688 | { | |
10689 | struct value_print_options opts; | |
10690 | ||
10691 | if (baton != NULL) | |
10692 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10693 | baton->data, | |
10694 | baton->size, | |
9f47c707 SM |
10695 | baton->per_cu, |
10696 | baton->per_objfile); | |
98bfdba5 PA |
10697 | else if (bytes != NULL) |
10698 | { | |
10699 | v = allocate_value (type); | |
10700 | memcpy (value_contents_writeable (v), bytes, | |
10701 | TYPE_LENGTH (type)); | |
10702 | } | |
10703 | else | |
10704 | v = value_from_longest (type, value); | |
10705 | ||
3e43a32a MS |
10706 | /* Specify decimal so that we do not depend on |
10707 | the radix. */ | |
98bfdba5 PA |
10708 | get_formatted_print_options (&opts, 'd'); |
10709 | opts.raw = 1; | |
d7e74731 | 10710 | value_print (v, &buf, &opts); |
98bfdba5 | 10711 | release_value (v); |
98bfdba5 PA |
10712 | } |
10713 | } | |
10714 | ||
10715 | die->building_fullname = 0; | |
10716 | ||
10717 | if (!first) | |
10718 | { | |
10719 | /* Close the argument list, with a space if necessary | |
10720 | (nested templates). */ | |
d7e74731 PA |
10721 | if (!buf.empty () && buf.string ().back () == '>') |
10722 | buf.puts (" >"); | |
98bfdba5 | 10723 | else |
d7e74731 | 10724 | buf.puts (">"); |
98bfdba5 PA |
10725 | } |
10726 | } | |
10727 | ||
9c37b5ae | 10728 | /* For C++ methods, append formal parameter type |
94af9270 | 10729 | information, if PHYSNAME. */ |
6e70227d | 10730 | |
94af9270 | 10731 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10732 | && cu->language == language_cplus) |
94af9270 KS |
10733 | { |
10734 | struct type *type = read_type_die (die, cu); | |
10735 | ||
d7e74731 | 10736 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10737 | &type_print_raw_options); |
94af9270 | 10738 | |
9c37b5ae | 10739 | if (cu->language == language_cplus) |
94af9270 | 10740 | { |
60430eff DJ |
10741 | /* Assume that an artificial first parameter is |
10742 | "this", but do not crash if it is not. RealView | |
10743 | marks unnamed (and thus unused) parameters as | |
10744 | artificial; there is no way to differentiate | |
10745 | the two cases. */ | |
1f704f76 | 10746 | if (type->num_fields () > 0 |
94af9270 | 10747 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10748 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10749 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10750 | buf.puts (" const"); |
94af9270 KS |
10751 | } |
10752 | } | |
10753 | ||
d7e74731 | 10754 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10755 | |
10756 | if (cu->language == language_cplus) | |
34a68019 | 10757 | canonical_name |
322a8516 | 10758 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10759 | objfile); |
34a68019 TT |
10760 | |
10761 | /* If we only computed INTERMEDIATE_NAME, or if | |
10762 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10763 | intern it. */ |
322a8516 | 10764 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10765 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10766 | else |
10767 | name = canonical_name; | |
94af9270 KS |
10768 | } |
10769 | } | |
10770 | ||
10771 | return name; | |
10772 | } | |
10773 | ||
0114d602 DJ |
10774 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10775 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10776 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10777 | not have a name. NAME may either be from a previous call to |
10778 | dwarf2_name or NULL. | |
10779 | ||
9c37b5ae | 10780 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10781 | |
10782 | static const char * | |
15d034d0 | 10783 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10784 | { |
94af9270 KS |
10785 | return dwarf2_compute_name (name, die, cu, 0); |
10786 | } | |
0114d602 | 10787 | |
94af9270 KS |
10788 | /* Construct a physname for the given DIE in CU. NAME may either be |
10789 | from a previous call to dwarf2_name or NULL. The result will be | |
10790 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10791 | name. | |
0114d602 | 10792 | |
9c37b5ae | 10793 | The output string will be canonicalized (if C++). */ |
0114d602 | 10794 | |
94af9270 | 10795 | static const char * |
15d034d0 | 10796 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10797 | { |
5e22e966 | 10798 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10799 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10800 | int need_copy = 1; |
10801 | ||
10802 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10803 | on its own. */ | |
10804 | if (!die_needs_namespace (die, cu)) | |
10805 | return dwarf2_compute_name (name, die, cu, 1); | |
10806 | ||
906bb4c5 TT |
10807 | if (cu->language != language_rust) |
10808 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10809 | |
10810 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10811 | has computed. */ | |
791afaa2 | 10812 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10813 | if (mangled != NULL) |
900e11f9 | 10814 | { |
900e11f9 | 10815 | |
d3355e4d | 10816 | if (language_def (cu->language)->store_sym_names_in_linkage_form_p ()) |
59cc4834 JB |
10817 | { |
10818 | /* Do nothing (do not demangle the symbol name). */ | |
10819 | } | |
a766d390 DE |
10820 | else |
10821 | { | |
0eb876f5 JB |
10822 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10823 | their return type. It is easier for GDB users to search | |
10824 | for such functions as `name(params)' than `long name(params)'. | |
10825 | In such case the minimal symbol names do not match the full | |
10826 | symbol names but for template functions there is never a need | |
10827 | to look up their definition from their declaration so | |
10828 | the only disadvantage remains the minimal symbol variant | |
10829 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10830 | demangled.reset (gdb_demangle (mangled, |
10831 | (DMGL_PARAMS | DMGL_ANSI | |
10832 | | DMGL_RET_DROP))); | |
a766d390 | 10833 | } |
900e11f9 | 10834 | if (demangled) |
791afaa2 | 10835 | canon = demangled.get (); |
900e11f9 JK |
10836 | else |
10837 | { | |
10838 | canon = mangled; | |
10839 | need_copy = 0; | |
10840 | } | |
10841 | } | |
10842 | ||
10843 | if (canon == NULL || check_physname) | |
10844 | { | |
10845 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10846 | ||
10847 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10848 | { | |
10849 | /* It may not mean a bug in GDB. The compiler could also | |
10850 | compute DW_AT_linkage_name incorrectly. But in such case | |
10851 | GDB would need to be bug-to-bug compatible. */ | |
10852 | ||
b98664d3 | 10853 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10854 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10855 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10856 | objfile_name (objfile)); |
900e11f9 JK |
10857 | |
10858 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10859 | is available here - over computed PHYSNAME. It is safer | |
10860 | against both buggy GDB and buggy compilers. */ | |
10861 | ||
10862 | retval = canon; | |
10863 | } | |
10864 | else | |
10865 | { | |
10866 | retval = physname; | |
10867 | need_copy = 0; | |
10868 | } | |
10869 | } | |
10870 | else | |
10871 | retval = canon; | |
10872 | ||
10873 | if (need_copy) | |
be1e3d3e | 10874 | retval = objfile->intern (retval); |
900e11f9 | 10875 | |
900e11f9 | 10876 | return retval; |
0114d602 DJ |
10877 | } |
10878 | ||
74921315 KS |
10879 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10880 | a new symbol for it. | |
10881 | ||
10882 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10883 | ||
10884 | static int | |
10885 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10886 | { | |
10887 | struct attribute *attr; | |
10888 | ||
10889 | /* If the die does not have a name, this is not a namespace | |
10890 | alias. */ | |
10891 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10892 | if (attr != NULL) | |
10893 | { | |
10894 | int num; | |
10895 | struct die_info *d = die; | |
10896 | struct dwarf2_cu *imported_cu = cu; | |
10897 | ||
10898 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10899 | keep inspecting DIEs until we hit the underlying import. */ | |
10900 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10901 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10902 | { | |
10903 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10904 | if (attr == NULL) | |
10905 | break; | |
10906 | ||
10907 | d = follow_die_ref (d, attr, &imported_cu); | |
10908 | if (d->tag != DW_TAG_imported_declaration) | |
10909 | break; | |
10910 | } | |
10911 | ||
10912 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10913 | { | |
b98664d3 | 10914 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10915 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10916 | return 0; |
10917 | } | |
10918 | ||
10919 | if (attr != NULL) | |
10920 | { | |
10921 | struct type *type; | |
0826b30a | 10922 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10923 | |
aa66c379 | 10924 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10925 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10926 | { |
10927 | /* This declaration is a global namespace alias. Add | |
10928 | a symbol for it whose type is the aliased namespace. */ | |
10929 | new_symbol (die, type, cu); | |
10930 | return 1; | |
10931 | } | |
10932 | } | |
10933 | } | |
10934 | ||
10935 | return 0; | |
10936 | } | |
10937 | ||
22cee43f | 10938 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10939 | current context for CU. |
22cee43f PMR |
10940 | |
10941 | For Ada, imported declarations can materialize renamings, which *may* be | |
10942 | global. However it is impossible (for now?) in DWARF to distinguish | |
10943 | "external" imported declarations and "static" ones. As all imported | |
10944 | declarations seem to be static in all other languages, make them all CU-wide | |
10945 | global only in Ada. */ | |
10946 | ||
10947 | static struct using_direct ** | |
804d2729 | 10948 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10949 | { |
c24bdb02 KS |
10950 | if (cu->language == language_ada |
10951 | && cu->get_builder ()->outermost_context_p ()) | |
10952 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10953 | else |
c24bdb02 | 10954 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10955 | } |
10956 | ||
27aa8d6a SW |
10957 | /* Read the import statement specified by the given die and record it. */ |
10958 | ||
10959 | static void | |
10960 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10961 | { | |
5e22e966 | 10962 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10963 | struct attribute *import_attr; |
32019081 | 10964 | struct die_info *imported_die, *child_die; |
de4affc9 | 10965 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10966 | const char *imported_name; |
794684b6 | 10967 | const char *imported_name_prefix; |
13387711 SW |
10968 | const char *canonical_name; |
10969 | const char *import_alias; | |
10970 | const char *imported_declaration = NULL; | |
794684b6 | 10971 | const char *import_prefix; |
eb1e02fd | 10972 | std::vector<const char *> excludes; |
13387711 | 10973 | |
27aa8d6a SW |
10974 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10975 | if (import_attr == NULL) | |
10976 | { | |
b98664d3 | 10977 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10978 | dwarf_tag_name (die->tag)); |
10979 | return; | |
10980 | } | |
10981 | ||
de4affc9 CC |
10982 | imported_cu = cu; |
10983 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10984 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10985 | if (imported_name == NULL) |
10986 | { | |
10987 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10988 | ||
dda83cd7 SM |
10989 | The import in the following code: |
10990 | namespace A | |
10991 | { | |
10992 | typedef int B; | |
10993 | } | |
10994 | ||
10995 | int main () | |
10996 | { | |
10997 | using A::B; | |
10998 | B b; | |
10999 | return b; | |
11000 | } | |
11001 | ||
11002 | ... | |
11003 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11004 | <52> DW_AT_decl_file : 1 | |
11005 | <53> DW_AT_decl_line : 6 | |
11006 | <54> DW_AT_import : <0x75> | |
11007 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11008 | <59> DW_AT_name : B | |
11009 | <5b> DW_AT_decl_file : 1 | |
11010 | <5c> DW_AT_decl_line : 2 | |
11011 | <5d> DW_AT_type : <0x6e> | |
11012 | ... | |
11013 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11014 | <76> DW_AT_byte_size : 4 | |
11015 | <77> DW_AT_encoding : 5 (signed) | |
11016 | ||
11017 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11018 | This case will be ignored until the gcc bug is fixed. */ | |
27aa8d6a SW |
11019 | return; |
11020 | } | |
11021 | ||
82856980 SW |
11022 | /* Figure out the local name after import. */ |
11023 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11024 | |
794684b6 SW |
11025 | /* Figure out where the statement is being imported to. */ |
11026 | import_prefix = determine_prefix (die, cu); | |
11027 | ||
11028 | /* Figure out what the scope of the imported die is and prepend it | |
11029 | to the name of the imported die. */ | |
de4affc9 | 11030 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11031 | |
f55ee35c JK |
11032 | if (imported_die->tag != DW_TAG_namespace |
11033 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11034 | { |
13387711 SW |
11035 | imported_declaration = imported_name; |
11036 | canonical_name = imported_name_prefix; | |
794684b6 | 11037 | } |
13387711 | 11038 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11039 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11040 | imported_name_prefix, |
11041 | (cu->language == language_d ? "." : "::"), | |
11042 | imported_name, (char *) NULL); | |
13387711 SW |
11043 | else |
11044 | canonical_name = imported_name; | |
794684b6 | 11045 | |
32019081 JK |
11046 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11047 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 11048 | child_die = child_die->sibling) |
32019081 JK |
11049 | { |
11050 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11051 | represented by an imported module entry with an import attribute | |
11052 | referring to the module and owned entries corresponding to those | |
11053 | entities that are renamed as part of being imported. */ | |
11054 | ||
11055 | if (child_die->tag != DW_TAG_imported_declaration) | |
11056 | { | |
b98664d3 | 11057 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
11058 | "- DIE at %s [in module %s]"), |
11059 | sect_offset_str (child_die->sect_off), | |
11060 | objfile_name (objfile)); | |
32019081 JK |
11061 | continue; |
11062 | } | |
11063 | ||
11064 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11065 | if (import_attr == NULL) | |
11066 | { | |
b98664d3 | 11067 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
11068 | dwarf_tag_name (child_die->tag)); |
11069 | continue; | |
11070 | } | |
11071 | ||
11072 | imported_cu = cu; | |
11073 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11074 | &imported_cu); | |
11075 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11076 | if (imported_name == NULL) | |
11077 | { | |
b98664d3 | 11078 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11079 | "imported name - DIE at %s [in module %s]"), |
11080 | sect_offset_str (child_die->sect_off), | |
11081 | objfile_name (objfile)); | |
32019081 JK |
11082 | continue; |
11083 | } | |
11084 | ||
eb1e02fd | 11085 | excludes.push_back (imported_name); |
32019081 JK |
11086 | |
11087 | process_die (child_die, cu); | |
11088 | } | |
11089 | ||
804d2729 | 11090 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11091 | import_prefix, |
11092 | canonical_name, | |
11093 | import_alias, | |
11094 | imported_declaration, | |
11095 | excludes, | |
11096 | 0, | |
11097 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11098 | } |
11099 | ||
5230b05a WT |
11100 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11101 | types, but gives them a size of zero. Starting with version 14, | |
11102 | ICC is compatible with GCC. */ | |
11103 | ||
9068261f | 11104 | static bool |
5230b05a WT |
11105 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
11106 | { | |
11107 | if (!cu->checked_producer) | |
11108 | check_producer (cu); | |
11109 | ||
11110 | return cu->producer_is_icc_lt_14; | |
11111 | } | |
11112 | ||
eb77c9df AB |
11113 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
11114 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
11115 | which says that void functions should not have a DW_AT_type. */ | |
11116 | ||
11117 | static bool | |
11118 | producer_is_icc (struct dwarf2_cu *cu) | |
11119 | { | |
11120 | if (!cu->checked_producer) | |
11121 | check_producer (cu); | |
11122 | ||
11123 | return cu->producer_is_icc; | |
11124 | } | |
11125 | ||
1b80a9fa JK |
11126 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11127 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11128 | this, it was first present in GCC release 4.3.0. */ | |
11129 | ||
9068261f | 11130 | static bool |
1b80a9fa JK |
11131 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11132 | { | |
11133 | if (!cu->checked_producer) | |
11134 | check_producer (cu); | |
11135 | ||
11136 | return cu->producer_is_gcc_lt_4_3; | |
11137 | } | |
11138 | ||
d721ba37 PA |
11139 | static file_and_directory |
11140 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11141 | { |
d721ba37 PA |
11142 | file_and_directory res; |
11143 | ||
9291a0cd TT |
11144 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11145 | is not a source language identifier. */ | |
d721ba37 PA |
11146 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11147 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11148 | |
d721ba37 PA |
11149 | if (res.comp_dir == NULL |
11150 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11151 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11152 | { |
d721ba37 PA |
11153 | res.comp_dir_storage = ldirname (res.name); |
11154 | if (!res.comp_dir_storage.empty ()) | |
11155 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11156 | } |
d721ba37 | 11157 | if (res.comp_dir != NULL) |
9291a0cd TT |
11158 | { |
11159 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11160 | directory, get rid of it. */ | |
d721ba37 | 11161 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11162 | |
d721ba37 PA |
11163 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11164 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11165 | } |
11166 | ||
d721ba37 PA |
11167 | if (res.name == NULL) |
11168 | res.name = "<unknown>"; | |
11169 | ||
11170 | return res; | |
9291a0cd TT |
11171 | } |
11172 | ||
f4dc4d17 DE |
11173 | /* Handle DW_AT_stmt_list for a compilation unit. |
11174 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11175 | COMP_DIR is the compilation directory. LOWPC is passed to |
11176 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11177 | |
11178 | static void | |
11179 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11180 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11181 | { |
976ca316 | 11182 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 11183 | struct attribute *attr; |
527f3840 JK |
11184 | struct line_header line_header_local; |
11185 | hashval_t line_header_local_hash; | |
527f3840 JK |
11186 | void **slot; |
11187 | int decode_mapping; | |
2ab95328 | 11188 | |
f4dc4d17 DE |
11189 | gdb_assert (! cu->per_cu->is_debug_types); |
11190 | ||
2ab95328 | 11191 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e | 11192 | if (attr == NULL || !attr->form_is_unsigned ()) |
527f3840 JK |
11193 | return; |
11194 | ||
d4df075e | 11195 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
527f3840 JK |
11196 | |
11197 | /* The line header hash table is only created if needed (it exists to | |
11198 | prevent redundant reading of the line table for partial_units). | |
11199 | If we're given a partial_unit, we'll need it. If we're given a | |
11200 | compile_unit, then use the line header hash table if it's already | |
11201 | created, but don't create one just yet. */ | |
11202 | ||
976ca316 | 11203 | if (per_objfile->line_header_hash == NULL |
527f3840 | 11204 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 11205 | { |
976ca316 | 11206 | per_objfile->line_header_hash |
d15acc42 TT |
11207 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
11208 | line_header_eq_voidp, | |
11209 | free_line_header_voidp, | |
11210 | xcalloc, xfree)); | |
527f3840 | 11211 | } |
2ab95328 | 11212 | |
9c541725 | 11213 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11214 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11215 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 11216 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 11217 | { |
976ca316 | 11218 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11219 | &line_header_local, |
11220 | line_header_local_hash, NO_INSERT); | |
11221 | ||
11222 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11223 | is not present in *SLOT (since if there is something in *SLOT then | |
11224 | it will be for a partial_unit). */ | |
11225 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11226 | { |
527f3840 | 11227 | gdb_assert (*slot != NULL); |
9a3c8263 | 11228 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11229 | return; |
dee91e82 | 11230 | } |
2ab95328 | 11231 | } |
527f3840 JK |
11232 | |
11233 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11234 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11235 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11236 | if (lh == NULL) | |
527f3840 | 11237 | return; |
4c8aa72d PA |
11238 | |
11239 | cu->line_header = lh.release (); | |
11240 | cu->line_header_die_owner = die; | |
527f3840 | 11241 | |
976ca316 | 11242 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
11243 | slot = NULL; |
11244 | else | |
11245 | { | |
976ca316 | 11246 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11247 | &line_header_local, |
11248 | line_header_local_hash, INSERT); | |
11249 | gdb_assert (slot != NULL); | |
11250 | } | |
11251 | if (slot != NULL && *slot == NULL) | |
11252 | { | |
11253 | /* This newly decoded line number information unit will be owned | |
11254 | by line_header_hash hash table. */ | |
11255 | *slot = cu->line_header; | |
4c8aa72d | 11256 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11257 | } |
11258 | else | |
11259 | { | |
11260 | /* We cannot free any current entry in (*slot) as that struct line_header | |
dda83cd7 | 11261 | may be already used by multiple CUs. Create only temporary decoded |
527f3840 JK |
11262 | line_header for this CU - it may happen at most once for each line |
11263 | number information unit. And if we're not using line_header_hash | |
11264 | then this is what we want as well. */ | |
11265 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11266 | } |
11267 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11268 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11269 | decode_mapping); | |
fff8551c | 11270 | |
2ab95328 TT |
11271 | } |
11272 | ||
95554aad | 11273 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11274 | |
c906108c | 11275 | static void |
e7c27a73 | 11276 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11277 | { |
976ca316 SM |
11278 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
11279 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 11280 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 11281 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11282 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11283 | struct attribute *attr; | |
c906108c | 11284 | struct die_info *child_die; |
e142c38c | 11285 | CORE_ADDR baseaddr; |
6e70227d | 11286 | |
380618d6 | 11287 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11288 | baseaddr = objfile->text_section_offset (); |
c906108c | 11289 | |
fae299cd | 11290 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11291 | |
11292 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11293 | from finish_block. */ | |
2acceee2 | 11294 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11295 | lowpc = highpc; |
3e29f34a | 11296 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11297 | |
d721ba37 | 11298 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11299 | |
f4b8a18d KW |
11300 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11301 | standardised yet. As a workaround for the language detection we fall | |
11302 | back to the DW_AT_producer string. */ | |
11303 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11304 | cu->language = language_opencl; | |
11305 | ||
3019eac3 DE |
11306 | /* Similar hack for Go. */ |
11307 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11308 | set_cu_language (DW_LANG_Go, cu); | |
11309 | ||
c24bdb02 | 11310 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11311 | |
11312 | /* Decode line number information if present. We do this before | |
11313 | processing child DIEs, so that the line header table is available | |
11314 | for DW_AT_decl_file. */ | |
d721ba37 | 11315 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11316 | |
11317 | /* Process all dies in compilation unit. */ | |
11318 | if (die->child != NULL) | |
11319 | { | |
11320 | child_die = die->child; | |
11321 | while (child_die && child_die->tag) | |
11322 | { | |
11323 | process_die (child_die, cu); | |
436c571c | 11324 | child_die = child_die->sibling; |
3019eac3 DE |
11325 | } |
11326 | } | |
11327 | ||
11328 | /* Decode macro information, if present. Dwarf 2 macro information | |
11329 | refers to information in the line number info statement program | |
11330 | header, so we can only read it if we've read the header | |
11331 | successfully. */ | |
0af92d60 JK |
11332 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11333 | if (attr == NULL) | |
11334 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
529908cb | 11335 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 DE |
11336 | { |
11337 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11338 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11339 | |
529908cb | 11340 | dwarf_decode_macros (cu, attr->as_unsigned (), 1); |
3019eac3 DE |
11341 | } |
11342 | else | |
11343 | { | |
11344 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
529908cb | 11345 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 | 11346 | { |
529908cb | 11347 | unsigned int macro_offset = attr->as_unsigned (); |
3019eac3 | 11348 | |
43f3e411 | 11349 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11350 | } |
11351 | } | |
3019eac3 DE |
11352 | } |
11353 | ||
c24bdb02 KS |
11354 | void |
11355 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11356 | { |
f4dc4d17 DE |
11357 | struct type_unit_group *tu_group; |
11358 | int first_time; | |
3019eac3 | 11359 | struct attribute *attr; |
9c541725 | 11360 | unsigned int i; |
0186c6a7 | 11361 | struct signatured_type *sig_type; |
3019eac3 | 11362 | |
f4dc4d17 | 11363 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11364 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11365 | |
c24bdb02 | 11366 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11367 | |
f4dc4d17 | 11368 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11369 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11370 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11371 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11372 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11373 | |
11374 | /* If we've already processed this stmt_list there's no real need to | |
11375 | do it again, we could fake it and just recreate the part we need | |
11376 | (file name,index -> symtab mapping). If data shows this optimization | |
11377 | is useful we can do it then. */ | |
8adb8487 TT |
11378 | type_unit_group_unshareable *tug_unshare |
11379 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11380 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11381 | |
11382 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11383 | debug info. */ | |
fff8551c | 11384 | line_header_up lh; |
d4df075e | 11385 | if (attr != NULL && attr->form_is_unsigned ()) |
3019eac3 | 11386 | { |
d4df075e | 11387 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
c24bdb02 | 11388 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11389 | } |
11390 | if (lh == NULL) | |
11391 | { | |
11392 | if (first_time) | |
c24bdb02 | 11393 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11394 | else |
11395 | { | |
8adb8487 | 11396 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11397 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11398 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11399 | m_builder.reset (new struct buildsym_compunit |
11400 | (COMPUNIT_OBJFILE (cust), "", | |
11401 | COMPUNIT_DIRNAME (cust), | |
11402 | compunit_language (cust), | |
11403 | 0, cust)); | |
770479f2 | 11404 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11405 | } |
f4dc4d17 | 11406 | return; |
3019eac3 DE |
11407 | } |
11408 | ||
c24bdb02 KS |
11409 | line_header = lh.release (); |
11410 | line_header_die_owner = die; | |
3019eac3 | 11411 | |
f4dc4d17 DE |
11412 | if (first_time) |
11413 | { | |
c24bdb02 | 11414 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11415 | |
1fd60fc0 DE |
11416 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11417 | still initializing it, and our caller (a few levels up) | |
11418 | process_full_type_unit still needs to know if this is the first | |
11419 | time. */ | |
11420 | ||
8adb8487 | 11421 | tug_unshare->symtabs |
4ac93832 TT |
11422 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11423 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11424 | |
7ba99d21 AT |
11425 | auto &file_names = line_header->file_names (); |
11426 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11427 | { |
7ba99d21 | 11428 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11429 | dwarf2_start_subfile (this, fe.name, |
11430 | fe.include_dir (line_header)); | |
11431 | buildsym_compunit *b = get_builder (); | |
11432 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11433 | { |
4c8aa72d PA |
11434 | /* NOTE: start_subfile will recognize when it's been |
11435 | passed a file it has already seen. So we can't | |
11436 | assume there's a simple mapping from | |
11437 | cu->line_header->file_names to subfiles, plus | |
11438 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11439 | b->get_current_subfile ()->symtab |
11440 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11441 | } |
11442 | ||
c24bdb02 | 11443 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11444 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11445 | } |
11446 | } | |
11447 | else | |
3019eac3 | 11448 | { |
c24bdb02 | 11449 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11450 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11451 | m_builder.reset (new struct buildsym_compunit |
11452 | (COMPUNIT_OBJFILE (cust), "", | |
11453 | COMPUNIT_DIRNAME (cust), | |
11454 | compunit_language (cust), | |
11455 | 0, cust)); | |
770479f2 | 11456 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11457 | |
7ba99d21 AT |
11458 | auto &file_names = line_header->file_names (); |
11459 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11460 | { |
7ba99d21 | 11461 | file_entry &fe = file_names[i]; |
8adb8487 | 11462 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11463 | } |
3019eac3 DE |
11464 | } |
11465 | ||
f4dc4d17 DE |
11466 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11467 | so they don't have a "real" (so to speak) symtab anyway. | |
11468 | There is later code that will assign the main symtab to all symbols | |
11469 | that don't have one. We need to handle the case of a symbol with a | |
11470 | missing symtab (DW_AT_decl_file) anyway. */ | |
11471 | } | |
3019eac3 | 11472 | |
f4dc4d17 DE |
11473 | /* Process DW_TAG_type_unit. |
11474 | For TUs we want to skip the first top level sibling if it's not the | |
11475 | actual type being defined by this TU. In this case the first top | |
11476 | level sibling is there to provide context only. */ | |
3019eac3 | 11477 | |
f4dc4d17 DE |
11478 | static void |
11479 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11480 | { | |
11481 | struct die_info *child_die; | |
3019eac3 | 11482 | |
f4dc4d17 DE |
11483 | prepare_one_comp_unit (cu, die, language_minimal); |
11484 | ||
11485 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11486 | We do this before processing child DIEs, so that the line header table | |
11487 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11488 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11489 | |
11490 | if (die->child != NULL) | |
11491 | { | |
11492 | child_die = die->child; | |
11493 | while (child_die && child_die->tag) | |
11494 | { | |
11495 | process_die (child_die, cu); | |
436c571c | 11496 | child_die = child_die->sibling; |
f4dc4d17 DE |
11497 | } |
11498 | } | |
3019eac3 DE |
11499 | } |
11500 | \f | |
80626a55 DE |
11501 | /* DWO/DWP files. |
11502 | ||
11503 | http://gcc.gnu.org/wiki/DebugFission | |
11504 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11505 | ||
11506 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11507 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11508 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11509 | |
11510 | static hashval_t | |
11511 | hash_dwo_file (const void *item) | |
11512 | { | |
9a3c8263 | 11513 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11514 | hashval_t hash; |
3019eac3 | 11515 | |
a2ce51a0 DE |
11516 | hash = htab_hash_string (dwo_file->dwo_name); |
11517 | if (dwo_file->comp_dir != NULL) | |
11518 | hash += htab_hash_string (dwo_file->comp_dir); | |
11519 | return hash; | |
3019eac3 DE |
11520 | } |
11521 | ||
11522 | static int | |
11523 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11524 | { | |
9a3c8263 SM |
11525 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11526 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11527 | |
a2ce51a0 DE |
11528 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11529 | return 0; | |
11530 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11531 | return lhs->comp_dir == rhs->comp_dir; | |
11532 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11533 | } |
11534 | ||
11535 | /* Allocate a hash table for DWO files. */ | |
11536 | ||
51ac9db5 | 11537 | static htab_up |
298e9637 | 11538 | allocate_dwo_file_hash_table () |
3019eac3 | 11539 | { |
51ac9db5 SM |
11540 | auto delete_dwo_file = [] (void *item) |
11541 | { | |
11542 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11543 | ||
11544 | delete dwo_file; | |
11545 | }; | |
11546 | ||
bc68fb19 TT |
11547 | return htab_up (htab_create_alloc (41, |
11548 | hash_dwo_file, | |
11549 | eq_dwo_file, | |
11550 | delete_dwo_file, | |
11551 | xcalloc, xfree)); | |
3019eac3 DE |
11552 | } |
11553 | ||
80626a55 DE |
11554 | /* Lookup DWO file DWO_NAME. */ |
11555 | ||
11556 | static void ** | |
976ca316 | 11557 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11558 | const char *dwo_name, |
11559 | const char *comp_dir) | |
80626a55 DE |
11560 | { |
11561 | struct dwo_file find_entry; | |
11562 | void **slot; | |
11563 | ||
976ca316 SM |
11564 | if (per_objfile->per_bfd->dwo_files == NULL) |
11565 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11566 | |
0ac5b59e DE |
11567 | find_entry.dwo_name = dwo_name; |
11568 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11569 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11570 | INSERT); |
80626a55 DE |
11571 | |
11572 | return slot; | |
11573 | } | |
11574 | ||
3019eac3 DE |
11575 | static hashval_t |
11576 | hash_dwo_unit (const void *item) | |
11577 | { | |
9a3c8263 | 11578 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11579 | |
11580 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11581 | return dwo_unit->signature; | |
11582 | } | |
11583 | ||
11584 | static int | |
11585 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11586 | { | |
9a3c8263 SM |
11587 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11588 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11589 | |
11590 | /* The signature is assumed to be unique within the DWO file. | |
11591 | So while object file CU dwo_id's always have the value zero, | |
11592 | that's OK, assuming each object file DWO file has only one CU, | |
11593 | and that's the rule for now. */ | |
11594 | return lhs->signature == rhs->signature; | |
11595 | } | |
11596 | ||
11597 | /* Allocate a hash table for DWO CUs,TUs. | |
11598 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11599 | ||
b0b6a987 | 11600 | static htab_up |
298e9637 | 11601 | allocate_dwo_unit_table () |
3019eac3 DE |
11602 | { |
11603 | /* Start out with a pretty small number. | |
11604 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11605 | return htab_up (htab_create_alloc (3, |
11606 | hash_dwo_unit, | |
11607 | eq_dwo_unit, | |
11608 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11609 | } |
11610 | ||
19c3d4c9 | 11611 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11612 | |
11613 | static void | |
19c3d4c9 DE |
11614 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11615 | const gdb_byte *info_ptr, | |
11616 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11617 | struct dwo_file *dwo_file, |
11618 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11619 | { |
11620 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11621 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11622 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11623 | |
a084a2a6 AT |
11624 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11625 | if (!signature.has_value ()) | |
3019eac3 | 11626 | { |
b98664d3 | 11627 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11628 | " its dwo_id [in module %s]"), |
9d8780f0 | 11629 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11630 | return; |
11631 | } | |
11632 | ||
3019eac3 | 11633 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11634 | dwo_unit->signature = *signature; |
8a0459fd | 11635 | dwo_unit->section = section; |
9c541725 | 11636 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11637 | dwo_unit->length = cu->per_cu->length; |
11638 | ||
6f738b01 SM |
11639 | dwarf_read_debug_printf (" offset %s, dwo_id %s", |
11640 | sect_offset_str (sect_off), | |
11641 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
11642 | } |
11643 | ||
33c5cd75 | 11644 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11645 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11646 | |
33c5cd75 | 11647 | static void |
976ca316 | 11648 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11649 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11650 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11651 | { |
976ca316 SM |
11652 | struct objfile *objfile = per_objfile->objfile; |
11653 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11654 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11655 | |
96b79293 | 11656 | section.read (objfile); |
33c5cd75 | 11657 | info_ptr = section.buffer; |
3019eac3 DE |
11658 | |
11659 | if (info_ptr == NULL) | |
33c5cd75 | 11660 | return; |
3019eac3 | 11661 | |
6f738b01 SM |
11662 | dwarf_read_debug_printf ("Reading %s for %s:", |
11663 | section.get_name (), | |
11664 | section.get_file_name ()); | |
3019eac3 | 11665 | |
33c5cd75 | 11666 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11667 | while (info_ptr < end_ptr) |
11668 | { | |
11669 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11670 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11671 | struct dwo_unit *dwo_unit; |
11672 | void **slot; | |
11673 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11674 | |
11675 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11676 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11677 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11678 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11679 | per_cu.section = §ion; | |
11680 | ||
976ca316 | 11681 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11682 | if (!reader.dummy_p) |
11683 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11684 | &dwo_file, &read_unit); |
33c5cd75 DB |
11685 | info_ptr += per_cu.length; |
11686 | ||
11687 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11688 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11689 | continue; |
3019eac3 | 11690 | |
33c5cd75 | 11691 | if (cus_htab == NULL) |
298e9637 | 11692 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11693 | |
1859c670 | 11694 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11695 | struct dwo_unit); |
c0ab21c2 | 11696 | *dwo_unit = read_unit; |
b0b6a987 | 11697 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11698 | gdb_assert (slot != NULL); |
11699 | if (*slot != NULL) | |
19c3d4c9 | 11700 | { |
33c5cd75 DB |
11701 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11702 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11703 | |
b98664d3 | 11704 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11705 | " the entry at offset %s, signature %s"), |
11706 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11707 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11708 | } |
33c5cd75 | 11709 | *slot = (void *)dwo_unit; |
3019eac3 | 11710 | } |
3019eac3 DE |
11711 | } |
11712 | ||
80626a55 DE |
11713 | /* DWP file .debug_{cu,tu}_index section format: |
11714 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
d2854d8d CT |
11715 | [ref: http://dwarfstd.org/doc/DWARF5.pdf, sect 7.3.5 "DWARF Package Files"] |
11716 | ||
11717 | DWP Versions 1 & 2 are older, pre-standard format versions. The first | |
11718 | officially standard DWP format was published with DWARF v5 and is called | |
11719 | Version 5. There are no versions 3 or 4. | |
80626a55 | 11720 | |
d2415c6c DE |
11721 | DWP Version 1: |
11722 | ||
80626a55 DE |
11723 | Both index sections have the same format, and serve to map a 64-bit |
11724 | signature to a set of section numbers. Each section begins with a header, | |
11725 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11726 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11727 | aligned at 8-byte boundaries in the file. | |
11728 | ||
d2415c6c DE |
11729 | The index section header consists of: |
11730 | ||
11731 | V, 32 bit version number | |
11732 | -, 32 bits unused | |
11733 | N, 32 bit number of compilation units or type units in the index | |
11734 | M, 32 bit number of slots in the hash table | |
80626a55 | 11735 | |
d2415c6c | 11736 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11737 | |
d2415c6c DE |
11738 | The hash table begins at offset 16 in the section, and consists of an array |
11739 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11740 | order of the application binary). Unused slots in the hash table are 0. | |
11741 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11742 | |
d2415c6c DE |
11743 | The parallel table begins immediately after the hash table |
11744 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11745 | array of 32-bit indexes (using the byte order of the application binary), | |
11746 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11747 | table contains a 32-bit index into the pool of section numbers. For unused | |
11748 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11749 | |
73869dc2 DE |
11750 | The pool of section numbers begins immediately following the hash table |
11751 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11752 | section numbers consists of an array of 32-bit words (using the byte order | |
11753 | of the application binary). Each item in the array is indexed starting | |
11754 | from 0. The hash table entry provides the index of the first section | |
11755 | number in the set. Additional section numbers in the set follow, and the | |
11756 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11757 | ||
11758 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11759 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11760 | be the second entry. Other members of the set may follow in any order. | |
11761 | ||
11762 | --- | |
11763 | ||
d2854d8d | 11764 | DWP Versions 2 and 5: |
73869dc2 | 11765 | |
d2854d8d | 11766 | DWP Versions 2 and 5 combine all the .debug_info, etc. sections into one, |
73869dc2 DE |
11767 | and the entries in the index tables are now offsets into these sections. |
11768 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11769 | section. | |
11770 | ||
11771 | Index Section Contents: | |
11772 | Header | |
11773 | Hash Table of Signatures dwp_hash_table.hash_table | |
11774 | Parallel Table of Indices dwp_hash_table.unit_table | |
d2854d8d CT |
11775 | Table of Section Offsets dwp_hash_table.{v2|v5}.{section_ids,offsets} |
11776 | Table of Section Sizes dwp_hash_table.{v2|v5}.sizes | |
73869dc2 DE |
11777 | |
11778 | The index section header consists of: | |
11779 | ||
11780 | V, 32 bit version number | |
11781 | L, 32 bit number of columns in the table of section offsets | |
11782 | N, 32 bit number of compilation units or type units in the index | |
11783 | M, 32 bit number of slots in the hash table | |
11784 | ||
11785 | Numbers are recorded using the byte order of the application binary. | |
11786 | ||
11787 | The hash table has the same format as version 1. | |
11788 | The parallel table of indices has the same format as version 1, | |
11789 | except that the entries are origin-1 indices into the table of sections | |
11790 | offsets and the table of section sizes. | |
11791 | ||
11792 | The table of offsets begins immediately following the parallel table | |
11793 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11794 | a two-dimensional array of 32-bit words (using the byte order of the | |
11795 | application binary), with L columns and N+1 rows, in row-major order. | |
11796 | Each row in the array is indexed starting from 0. The first row provides | |
11797 | a key to the remaining rows: each column in this row provides an identifier | |
11798 | for a debug section, and the offsets in the same column of subsequent rows | |
d2854d8d | 11799 | refer to that section. The section identifiers for Version 2 are: |
73869dc2 DE |
11800 | |
11801 | DW_SECT_INFO 1 .debug_info.dwo | |
11802 | DW_SECT_TYPES 2 .debug_types.dwo | |
11803 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11804 | DW_SECT_LINE 4 .debug_line.dwo | |
11805 | DW_SECT_LOC 5 .debug_loc.dwo | |
11806 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11807 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11808 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11809 | ||
d2854d8d CT |
11810 | The section identifiers for Version 5 are: |
11811 | ||
11812 | DW_SECT_INFO_V5 1 .debug_info.dwo | |
11813 | DW_SECT_RESERVED_V5 2 -- | |
11814 | DW_SECT_ABBREV_V5 3 .debug_abbrev.dwo | |
11815 | DW_SECT_LINE_V5 4 .debug_line.dwo | |
11816 | DW_SECT_LOCLISTS_V5 5 .debug_loclists.dwo | |
11817 | DW_SECT_STR_OFFSETS_V5 6 .debug_str_offsets.dwo | |
11818 | DW_SECT_MACRO_V5 7 .debug_macro.dwo | |
11819 | DW_SECT_RNGLISTS_V5 8 .debug_rnglists.dwo | |
11820 | ||
73869dc2 DE |
11821 | The offsets provided by the CU and TU index sections are the base offsets |
11822 | for the contributions made by each CU or TU to the corresponding section | |
11823 | in the package file. Each CU and TU header contains an abbrev_offset | |
11824 | field, used to find the abbreviations table for that CU or TU within the | |
11825 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11826 | be interpreted as relative to the base offset given in the index section. | |
11827 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11828 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11829 | and offsets into other debug sections obtained from DWARF attributes should | |
11830 | also be interpreted as relative to the corresponding base offset. | |
11831 | ||
11832 | The table of sizes begins immediately following the table of offsets. | |
11833 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11834 | with L columns and N rows, in row-major order. Each row in the array is | |
11835 | indexed starting from 1 (row 0 is shared by the two tables). | |
11836 | ||
11837 | --- | |
11838 | ||
11839 | Hash table lookup is handled the same in version 1 and 2: | |
11840 | ||
11841 | We assume that N and M will not exceed 2^32 - 1. | |
11842 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11843 | ||
d2415c6c DE |
11844 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11845 | in the hash table is located as follows: | |
80626a55 | 11846 | |
d2415c6c DE |
11847 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11848 | the low-order k bits all set to 1. | |
80626a55 | 11849 | |
d2415c6c | 11850 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11851 | |
d2415c6c DE |
11852 | 3) If the hash table entry at index H matches the signature, use that |
11853 | entry. If the hash table entry at index H is unused (all zeroes), | |
11854 | terminate the search: the signature is not present in the table. | |
80626a55 | 11855 | |
d2415c6c | 11856 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11857 | |
d2415c6c | 11858 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11859 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11860 | |
11861 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11862 | .debug_{info,types}.dwo in DWP_FILE. | |
11863 | Returns NULL if there isn't one. | |
11864 | Note: This function processes DWP files only, not DWO files. */ | |
11865 | ||
11866 | static struct dwp_hash_table * | |
976ca316 | 11867 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11868 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11869 | { |
976ca316 | 11870 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11871 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11872 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11873 | struct dwarf2_section_info *index; |
73869dc2 | 11874 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11875 | struct dwp_hash_table *htab; |
11876 | ||
11877 | if (is_debug_types) | |
11878 | index = &dwp_file->sections.tu_index; | |
11879 | else | |
11880 | index = &dwp_file->sections.cu_index; | |
11881 | ||
96b79293 | 11882 | if (index->empty ()) |
80626a55 | 11883 | return NULL; |
96b79293 | 11884 | index->read (objfile); |
80626a55 DE |
11885 | |
11886 | index_ptr = index->buffer; | |
11887 | index_end = index_ptr + index->size; | |
11888 | ||
d2854d8d CT |
11889 | /* For Version 5, the version is really 2 bytes of data & 2 bytes of padding. |
11890 | For now it's safe to just read 4 bytes (particularly as it's difficult to | |
11891 | tell if you're dealing with Version 5 before you've read the version). */ | |
80626a55 | 11892 | version = read_4_bytes (dbfd, index_ptr); |
73869dc2 | 11893 | index_ptr += 4; |
d2854d8d | 11894 | if (version == 2 || version == 5) |
73869dc2 DE |
11895 | nr_columns = read_4_bytes (dbfd, index_ptr); |
11896 | else | |
11897 | nr_columns = 0; | |
11898 | index_ptr += 4; | |
80626a55 DE |
11899 | nr_units = read_4_bytes (dbfd, index_ptr); |
11900 | index_ptr += 4; | |
11901 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11902 | index_ptr += 4; | |
11903 | ||
d2854d8d | 11904 | if (version != 1 && version != 2 && version != 5) |
80626a55 | 11905 | { |
21aa081e | 11906 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11907 | " [in module %s]"), |
21aa081e | 11908 | pulongest (version), dwp_file->name); |
80626a55 DE |
11909 | } |
11910 | if (nr_slots != (nr_slots & -nr_slots)) | |
11911 | { | |
21aa081e | 11912 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11913 | " is not power of 2 [in module %s]"), |
21aa081e | 11914 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11915 | } |
11916 | ||
976ca316 | 11917 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11918 | htab->version = version; |
11919 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11920 | htab->nr_units = nr_units; |
11921 | htab->nr_slots = nr_slots; | |
11922 | htab->hash_table = index_ptr; | |
11923 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11924 | |
11925 | /* Exit early if the table is empty. */ | |
11926 | if (nr_slots == 0 || nr_units == 0 | |
d2854d8d CT |
11927 | || (version == 2 && nr_columns == 0) |
11928 | || (version == 5 && nr_columns == 0)) | |
73869dc2 DE |
11929 | { |
11930 | /* All must be zero. */ | |
11931 | if (nr_slots != 0 || nr_units != 0 | |
d2854d8d CT |
11932 | || (version == 2 && nr_columns != 0) |
11933 | || (version == 5 && nr_columns != 0)) | |
73869dc2 | 11934 | { |
b98664d3 | 11935 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11936 | " all zero [in modules %s]"), |
11937 | dwp_file->name); | |
11938 | } | |
11939 | return htab; | |
11940 | } | |
11941 | ||
11942 | if (version == 1) | |
11943 | { | |
11944 | htab->section_pool.v1.indices = | |
11945 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11946 | /* It's harder to decide whether the section is too small in v1. | |
11947 | V1 is deprecated anyway so we punt. */ | |
11948 | } | |
d2854d8d | 11949 | else if (version == 2) |
73869dc2 DE |
11950 | { |
11951 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11952 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11953 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11954 | /* Reverse map for error checking. */ |
11955 | int ids_seen[DW_SECT_MAX + 1]; | |
11956 | int i; | |
11957 | ||
11958 | if (nr_columns < 2) | |
11959 | { | |
11960 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11961 | " in section table [in module %s]"), | |
11962 | dwp_file->name); | |
11963 | } | |
11964 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11965 | { | |
11966 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11967 | " in section table [in module %s]"), | |
11968 | dwp_file->name); | |
11969 | } | |
04fd5eed GB |
11970 | memset (ids, 255, sizeof_ids); |
11971 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11972 | for (i = 0; i < nr_columns; ++i) |
11973 | { | |
11974 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11975 | ||
11976 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11977 | { | |
11978 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11979 | " in section table [in module %s]"), | |
11980 | id, dwp_file->name); | |
11981 | } | |
11982 | if (ids_seen[id] != -1) | |
11983 | { | |
11984 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11985 | " id %d in section table [in module %s]"), | |
11986 | id, dwp_file->name); | |
11987 | } | |
11988 | ids_seen[id] = i; | |
11989 | ids[i] = id; | |
11990 | } | |
11991 | /* Must have exactly one info or types section. */ | |
11992 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11993 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11994 | != 1) | |
11995 | { | |
11996 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11997 | " DWO info/types section [in module %s]"), | |
11998 | dwp_file->name); | |
11999 | } | |
12000 | /* Must have an abbrev section. */ | |
12001 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12002 | { | |
12003 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12004 | " section [in module %s]"), | |
12005 | dwp_file->name); | |
12006 | } | |
12007 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12008 | htab->section_pool.v2.sizes = | |
12009 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12010 | * nr_units * nr_columns); | |
12011 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12012 | * nr_units * nr_columns)) | |
12013 | > index_end) | |
12014 | { | |
12015 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12016 | " [in module %s]"), | |
12017 | dwp_file->name); | |
12018 | } | |
12019 | } | |
d2854d8d CT |
12020 | else /* version == 5 */ |
12021 | { | |
12022 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12023 | int *ids = htab->section_pool.v5.section_ids; | |
12024 | size_t sizeof_ids = sizeof (htab->section_pool.v5.section_ids); | |
12025 | /* Reverse map for error checking. */ | |
12026 | int ids_seen[DW_SECT_MAX_V5 + 1]; | |
12027 | ||
12028 | if (nr_columns < 2) | |
12029 | { | |
12030 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12031 | " in section table [in module %s]"), | |
12032 | dwp_file->name); | |
12033 | } | |
12034 | if (nr_columns > MAX_NR_V5_DWO_SECTIONS) | |
12035 | { | |
12036 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12037 | " in section table [in module %s]"), | |
12038 | dwp_file->name); | |
12039 | } | |
12040 | memset (ids, 255, sizeof_ids); | |
12041 | memset (ids_seen, 255, sizeof (ids_seen)); | |
12042 | for (int i = 0; i < nr_columns; ++i) | |
12043 | { | |
12044 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12045 | ||
12046 | if (id < DW_SECT_MIN || id > DW_SECT_MAX_V5) | |
12047 | { | |
12048 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12049 | " in section table [in module %s]"), | |
12050 | id, dwp_file->name); | |
12051 | } | |
12052 | if (ids_seen[id] != -1) | |
12053 | { | |
12054 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12055 | " id %d in section table [in module %s]"), | |
12056 | id, dwp_file->name); | |
12057 | } | |
12058 | ids_seen[id] = i; | |
12059 | ids[i] = id; | |
12060 | } | |
12061 | /* Must have seen an info section. */ | |
12062 | if (ids_seen[DW_SECT_INFO_V5] == -1) | |
12063 | { | |
12064 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12065 | " DWO info/types section [in module %s]"), | |
12066 | dwp_file->name); | |
12067 | } | |
12068 | /* Must have an abbrev section. */ | |
12069 | if (ids_seen[DW_SECT_ABBREV_V5] == -1) | |
12070 | { | |
12071 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12072 | " section [in module %s]"), | |
12073 | dwp_file->name); | |
12074 | } | |
12075 | htab->section_pool.v5.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12076 | htab->section_pool.v5.sizes | |
12077 | = htab->section_pool.v5.offsets + (sizeof (uint32_t) | |
12078 | * nr_units * nr_columns); | |
12079 | if ((htab->section_pool.v5.sizes + (sizeof (uint32_t) | |
12080 | * nr_units * nr_columns)) | |
12081 | > index_end) | |
12082 | { | |
12083 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12084 | " [in module %s]"), | |
12085 | dwp_file->name); | |
12086 | } | |
12087 | } | |
80626a55 DE |
12088 | |
12089 | return htab; | |
12090 | } | |
12091 | ||
12092 | /* Update SECTIONS with the data from SECTP. | |
12093 | ||
5bb6e9dd TT |
12094 | This function is like the other "locate" section routines, but in |
12095 | this context the sections to read comes from the DWP V1 hash table, | |
12096 | not the full ELF section table. | |
80626a55 DE |
12097 | |
12098 | The result is non-zero for success, or zero if an error was found. */ | |
12099 | ||
12100 | static int | |
73869dc2 DE |
12101 | locate_v1_virtual_dwo_sections (asection *sectp, |
12102 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12103 | { |
12104 | const struct dwop_section_names *names = &dwop_section_names; | |
12105 | ||
12106 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12107 | { | |
12108 | /* There can be only one. */ | |
049412e3 | 12109 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12110 | return 0; |
049412e3 | 12111 | sections->abbrev.s.section = sectp; |
fd361982 | 12112 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12113 | } |
12114 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12115 | || section_is_p (sectp->name, &names->types_dwo)) | |
12116 | { | |
12117 | /* There can be only one. */ | |
049412e3 | 12118 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12119 | return 0; |
049412e3 | 12120 | sections->info_or_types.s.section = sectp; |
fd361982 | 12121 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
12122 | } |
12123 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12124 | { | |
12125 | /* There can be only one. */ | |
049412e3 | 12126 | if (sections->line.s.section != NULL) |
80626a55 | 12127 | return 0; |
049412e3 | 12128 | sections->line.s.section = sectp; |
fd361982 | 12129 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12130 | } |
12131 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12132 | { | |
12133 | /* There can be only one. */ | |
049412e3 | 12134 | if (sections->loc.s.section != NULL) |
80626a55 | 12135 | return 0; |
049412e3 | 12136 | sections->loc.s.section = sectp; |
fd361982 | 12137 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12138 | } |
12139 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12140 | { | |
12141 | /* There can be only one. */ | |
049412e3 | 12142 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12143 | return 0; |
049412e3 | 12144 | sections->macinfo.s.section = sectp; |
fd361982 | 12145 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12146 | } |
12147 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12148 | { | |
12149 | /* There can be only one. */ | |
049412e3 | 12150 | if (sections->macro.s.section != NULL) |
80626a55 | 12151 | return 0; |
049412e3 | 12152 | sections->macro.s.section = sectp; |
fd361982 | 12153 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12154 | } |
12155 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12156 | { | |
12157 | /* There can be only one. */ | |
049412e3 | 12158 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12159 | return 0; |
049412e3 | 12160 | sections->str_offsets.s.section = sectp; |
fd361982 | 12161 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12162 | } |
12163 | else | |
12164 | { | |
12165 | /* No other kind of section is valid. */ | |
12166 | return 0; | |
12167 | } | |
12168 | ||
12169 | return 1; | |
12170 | } | |
12171 | ||
73869dc2 DE |
12172 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12173 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12174 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12175 | This is for DWP version 1 files. */ | |
80626a55 DE |
12176 | |
12177 | static struct dwo_unit * | |
976ca316 | 12178 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12179 | struct dwp_file *dwp_file, |
73869dc2 DE |
12180 | uint32_t unit_index, |
12181 | const char *comp_dir, | |
12182 | ULONGEST signature, int is_debug_types) | |
80626a55 | 12183 | { |
73869dc2 DE |
12184 | const struct dwp_hash_table *dwp_htab = |
12185 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12186 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12187 | const char *kind = is_debug_types ? "TU" : "CU"; |
12188 | struct dwo_file *dwo_file; | |
12189 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12190 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12191 | void **dwo_file_slot; |
80626a55 DE |
12192 | int i; |
12193 | ||
73869dc2 DE |
12194 | gdb_assert (dwp_file->version == 1); |
12195 | ||
6f738b01 SM |
12196 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V1 file: %s", |
12197 | kind, pulongest (unit_index), hex_string (signature), | |
12198 | dwp_file->name); | |
80626a55 | 12199 | |
19ac8c2e | 12200 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12201 | Put a limit on the number of sections we look for so that bad data |
12202 | doesn't cause us to loop forever. */ | |
12203 | ||
73869dc2 | 12204 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12205 | (1 /* .debug_info or .debug_types */ \ |
12206 | + 1 /* .debug_abbrev */ \ | |
12207 | + 1 /* .debug_line */ \ | |
12208 | + 1 /* .debug_loc */ \ | |
12209 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12210 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12211 | + 1 /* trailing zero */) |
12212 | ||
12213 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12214 | |
73869dc2 | 12215 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12216 | { |
12217 | asection *sectp; | |
12218 | uint32_t section_nr = | |
12219 | read_4_bytes (dbfd, | |
73869dc2 DE |
12220 | dwp_htab->section_pool.v1.indices |
12221 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12222 | |
12223 | if (section_nr == 0) | |
12224 | break; | |
12225 | if (section_nr >= dwp_file->num_sections) | |
12226 | { | |
12227 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12228 | " [in module %s]"), | |
12229 | dwp_file->name); | |
12230 | } | |
12231 | ||
12232 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12233 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12234 | { |
12235 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12236 | " [in module %s]"), | |
12237 | dwp_file->name); | |
12238 | } | |
12239 | } | |
12240 | ||
12241 | if (i < 2 | |
96b79293 TT |
12242 | || sections.info_or_types.empty () |
12243 | || sections.abbrev.empty ()) | |
80626a55 DE |
12244 | { |
12245 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12246 | " [in module %s]"), | |
12247 | dwp_file->name); | |
12248 | } | |
73869dc2 | 12249 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12250 | { |
12251 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12252 | " [in module %s]"), | |
12253 | dwp_file->name); | |
12254 | } | |
12255 | ||
12256 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12257 | have dwo_unit "live" in that. At least for now. | |
12258 | ||
12259 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12260 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12261 | file, we can combine them back into a virtual DWO file to save space |
12262 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12263 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12264 | ||
791afaa2 TT |
12265 | std::string virtual_dwo_name = |
12266 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
12267 | sections.abbrev.get_id (), |
12268 | sections.line.get_id (), | |
12269 | sections.loc.get_id (), | |
12270 | sections.str_offsets.get_id ()); | |
80626a55 | 12271 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12272 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12273 | comp_dir); |
80626a55 DE |
12274 | /* Create one if necessary. */ |
12275 | if (*dwo_file_slot == NULL) | |
12276 | { | |
6f738b01 SM |
12277 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12278 | virtual_dwo_name.c_str ()); | |
12279 | ||
51ac9db5 | 12280 | dwo_file = new struct dwo_file; |
976ca316 | 12281 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 12282 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12283 | dwo_file->sections.abbrev = sections.abbrev; |
12284 | dwo_file->sections.line = sections.line; | |
12285 | dwo_file->sections.loc = sections.loc; | |
12286 | dwo_file->sections.macinfo = sections.macinfo; | |
12287 | dwo_file->sections.macro = sections.macro; | |
12288 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12289 | /* The "str" section is global to the entire DWP file. */ | |
12290 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12291 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12292 | there's no need to record it in dwo_file. |
12293 | Also, we can't simply record type sections in dwo_file because | |
12294 | we record a pointer into the vector in dwo_unit. As we collect more | |
12295 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12296 | for it, invalidating all copies of pointers into the previous |
12297 | contents. */ | |
80626a55 DE |
12298 | *dwo_file_slot = dwo_file; |
12299 | } | |
12300 | else | |
12301 | { | |
6f738b01 SM |
12302 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12303 | virtual_dwo_name.c_str ()); | |
12304 | ||
9a3c8263 | 12305 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12306 | } |
80626a55 | 12307 | |
976ca316 | 12308 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
12309 | dwo_unit->dwo_file = dwo_file; |
12310 | dwo_unit->signature = signature; | |
8d749320 | 12311 | dwo_unit->section = |
976ca316 | 12312 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 12313 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12314 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12315 | |
12316 | return dwo_unit; | |
12317 | } | |
12318 | ||
d2854d8d CT |
12319 | /* Subroutine of create_dwo_unit_in_dwp_v2 and create_dwo_unit_in_dwp_v5 to |
12320 | simplify them. Given a pointer to the containing section SECTION, and | |
12321 | OFFSET,SIZE of the piece within that section used by a TU/CU, return a | |
12322 | virtual section of just that piece. */ | |
73869dc2 DE |
12323 | |
12324 | static struct dwarf2_section_info | |
d2854d8d CT |
12325 | create_dwp_v2_or_v5_section (dwarf2_per_objfile *per_objfile, |
12326 | struct dwarf2_section_info *section, | |
12327 | bfd_size_type offset, bfd_size_type size) | |
73869dc2 DE |
12328 | { |
12329 | struct dwarf2_section_info result; | |
12330 | asection *sectp; | |
12331 | ||
12332 | gdb_assert (section != NULL); | |
12333 | gdb_assert (!section->is_virtual); | |
12334 | ||
12335 | memset (&result, 0, sizeof (result)); | |
12336 | result.s.containing_section = section; | |
dc4ccb6f | 12337 | result.is_virtual = true; |
73869dc2 DE |
12338 | |
12339 | if (size == 0) | |
12340 | return result; | |
12341 | ||
96b79293 | 12342 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12343 | |
12344 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12345 | bounds of the real section. This is a pretty-rare event, so just | |
12346 | flag an error (easier) instead of a warning and trying to cope. */ | |
12347 | if (sectp == NULL | |
fd361982 | 12348 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12349 | { |
d2854d8d | 12350 | error (_("Dwarf Error: Bad DWP V2 or V5 section info, doesn't fit" |
73869dc2 | 12351 | " in section %s [in module %s]"), |
fd361982 | 12352 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 12353 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
12354 | } |
12355 | ||
12356 | result.virtual_offset = offset; | |
12357 | result.size = size; | |
12358 | return result; | |
12359 | } | |
12360 | ||
12361 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12362 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12363 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12364 | This is for DWP version 2 files. */ | |
12365 | ||
12366 | static struct dwo_unit * | |
976ca316 | 12367 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12368 | struct dwp_file *dwp_file, |
73869dc2 DE |
12369 | uint32_t unit_index, |
12370 | const char *comp_dir, | |
12371 | ULONGEST signature, int is_debug_types) | |
12372 | { | |
73869dc2 DE |
12373 | const struct dwp_hash_table *dwp_htab = |
12374 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12375 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12376 | const char *kind = is_debug_types ? "TU" : "CU"; |
12377 | struct dwo_file *dwo_file; | |
12378 | struct dwo_unit *dwo_unit; | |
d2854d8d | 12379 | struct virtual_v2_or_v5_dwo_sections sections; |
73869dc2 | 12380 | void **dwo_file_slot; |
73869dc2 DE |
12381 | int i; |
12382 | ||
12383 | gdb_assert (dwp_file->version == 2); | |
12384 | ||
6f738b01 SM |
12385 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V2 file: %s", |
12386 | kind, pulongest (unit_index), hex_string (signature), | |
12387 | dwp_file->name); | |
73869dc2 DE |
12388 | |
12389 | /* Fetch the section offsets of this DWO unit. */ | |
12390 | ||
12391 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12392 | |
12393 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12394 | { | |
12395 | uint32_t offset = read_4_bytes (dbfd, | |
12396 | dwp_htab->section_pool.v2.offsets | |
12397 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12398 | + i) | |
12399 | * sizeof (uint32_t))); | |
12400 | uint32_t size = read_4_bytes (dbfd, | |
12401 | dwp_htab->section_pool.v2.sizes | |
12402 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12403 | + i) | |
12404 | * sizeof (uint32_t))); | |
12405 | ||
12406 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12407 | { | |
12408 | case DW_SECT_INFO: | |
12409 | case DW_SECT_TYPES: | |
12410 | sections.info_or_types_offset = offset; | |
12411 | sections.info_or_types_size = size; | |
12412 | break; | |
12413 | case DW_SECT_ABBREV: | |
12414 | sections.abbrev_offset = offset; | |
12415 | sections.abbrev_size = size; | |
12416 | break; | |
12417 | case DW_SECT_LINE: | |
12418 | sections.line_offset = offset; | |
12419 | sections.line_size = size; | |
12420 | break; | |
12421 | case DW_SECT_LOC: | |
12422 | sections.loc_offset = offset; | |
12423 | sections.loc_size = size; | |
12424 | break; | |
12425 | case DW_SECT_STR_OFFSETS: | |
12426 | sections.str_offsets_offset = offset; | |
12427 | sections.str_offsets_size = size; | |
12428 | break; | |
12429 | case DW_SECT_MACINFO: | |
12430 | sections.macinfo_offset = offset; | |
12431 | sections.macinfo_size = size; | |
12432 | break; | |
12433 | case DW_SECT_MACRO: | |
12434 | sections.macro_offset = offset; | |
12435 | sections.macro_size = size; | |
12436 | break; | |
12437 | } | |
12438 | } | |
12439 | ||
12440 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12441 | have dwo_unit "live" in that. At least for now. | |
12442 | ||
12443 | The DWP file can be made up of a random collection of CUs and TUs. | |
12444 | However, for each CU + set of TUs that came from the same original DWO | |
12445 | file, we can combine them back into a virtual DWO file to save space | |
12446 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12447 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12448 | ||
791afaa2 TT |
12449 | std::string virtual_dwo_name = |
12450 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12451 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12452 | (long) (sections.line_size ? sections.line_offset : 0), | |
12453 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12454 | (long) (sections.str_offsets_size | |
12455 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12456 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12457 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12458 | comp_dir); |
73869dc2 DE |
12459 | /* Create one if necessary. */ |
12460 | if (*dwo_file_slot == NULL) | |
12461 | { | |
6f738b01 SM |
12462 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12463 | virtual_dwo_name.c_str ()); | |
12464 | ||
51ac9db5 | 12465 | dwo_file = new struct dwo_file; |
976ca316 | 12466 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12467 | dwo_file->comp_dir = comp_dir; |
12468 | dwo_file->sections.abbrev = | |
d2854d8d CT |
12469 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.abbrev, |
12470 | sections.abbrev_offset, | |
12471 | sections.abbrev_size); | |
73869dc2 | 12472 | dwo_file->sections.line = |
d2854d8d CT |
12473 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.line, |
12474 | sections.line_offset, | |
12475 | sections.line_size); | |
73869dc2 | 12476 | dwo_file->sections.loc = |
d2854d8d CT |
12477 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.loc, |
12478 | sections.loc_offset, sections.loc_size); | |
73869dc2 | 12479 | dwo_file->sections.macinfo = |
d2854d8d CT |
12480 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macinfo, |
12481 | sections.macinfo_offset, | |
12482 | sections.macinfo_size); | |
73869dc2 | 12483 | dwo_file->sections.macro = |
d2854d8d CT |
12484 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macro, |
12485 | sections.macro_offset, | |
12486 | sections.macro_size); | |
73869dc2 | 12487 | dwo_file->sections.str_offsets = |
d2854d8d CT |
12488 | create_dwp_v2_or_v5_section (per_objfile, |
12489 | &dwp_file->sections.str_offsets, | |
12490 | sections.str_offsets_offset, | |
12491 | sections.str_offsets_size); | |
73869dc2 DE |
12492 | /* The "str" section is global to the entire DWP file. */ |
12493 | dwo_file->sections.str = dwp_file->sections.str; | |
12494 | /* The info or types section is assigned below to dwo_unit, | |
12495 | there's no need to record it in dwo_file. | |
12496 | Also, we can't simply record type sections in dwo_file because | |
12497 | we record a pointer into the vector in dwo_unit. As we collect more | |
12498 | types we'll grow the vector and eventually have to reallocate space | |
12499 | for it, invalidating all copies of pointers into the previous | |
12500 | contents. */ | |
12501 | *dwo_file_slot = dwo_file; | |
12502 | } | |
12503 | else | |
12504 | { | |
6f738b01 SM |
12505 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12506 | virtual_dwo_name.c_str ()); | |
12507 | ||
9a3c8263 | 12508 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12509 | } |
73869dc2 | 12510 | |
976ca316 | 12511 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12512 | dwo_unit->dwo_file = dwo_file; |
12513 | dwo_unit->signature = signature; | |
8d749320 | 12514 | dwo_unit->section = |
976ca316 | 12515 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
d2854d8d | 12516 | *dwo_unit->section = create_dwp_v2_or_v5_section |
dda83cd7 | 12517 | (per_objfile, |
d2854d8d CT |
12518 | is_debug_types |
12519 | ? &dwp_file->sections.types | |
12520 | : &dwp_file->sections.info, | |
12521 | sections.info_or_types_offset, | |
12522 | sections.info_or_types_size); | |
12523 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12524 | ||
12525 | return dwo_unit; | |
12526 | } | |
12527 | ||
12528 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12529 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12530 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12531 | This is for DWP version 5 files. */ | |
12532 | ||
12533 | static struct dwo_unit * | |
12534 | create_dwo_unit_in_dwp_v5 (dwarf2_per_objfile *per_objfile, | |
12535 | struct dwp_file *dwp_file, | |
12536 | uint32_t unit_index, | |
12537 | const char *comp_dir, | |
12538 | ULONGEST signature, int is_debug_types) | |
12539 | { | |
12540 | const struct dwp_hash_table *dwp_htab | |
12541 | = is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12542 | bfd *dbfd = dwp_file->dbfd.get (); | |
12543 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12544 | struct dwo_file *dwo_file; | |
12545 | struct dwo_unit *dwo_unit; | |
12546 | struct virtual_v2_or_v5_dwo_sections sections {}; | |
12547 | void **dwo_file_slot; | |
12548 | ||
12549 | gdb_assert (dwp_file->version == 5); | |
12550 | ||
6f738b01 SM |
12551 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V5 file: %s", |
12552 | kind, pulongest (unit_index), hex_string (signature), | |
12553 | dwp_file->name); | |
d2854d8d CT |
12554 | |
12555 | /* Fetch the section offsets of this DWO unit. */ | |
12556 | ||
12557 | /* memset (§ions, 0, sizeof (sections)); */ | |
12558 | ||
12559 | for (int i = 0; i < dwp_htab->nr_columns; ++i) | |
12560 | { | |
12561 | uint32_t offset = read_4_bytes (dbfd, | |
dda83cd7 SM |
12562 | dwp_htab->section_pool.v5.offsets |
12563 | + (((unit_index - 1) | |
12564 | * dwp_htab->nr_columns | |
12565 | + i) | |
12566 | * sizeof (uint32_t))); | |
d2854d8d | 12567 | uint32_t size = read_4_bytes (dbfd, |
dda83cd7 SM |
12568 | dwp_htab->section_pool.v5.sizes |
12569 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12570 | + i) | |
12571 | * sizeof (uint32_t))); | |
d2854d8d CT |
12572 | |
12573 | switch (dwp_htab->section_pool.v5.section_ids[i]) | |
dda83cd7 SM |
12574 | { |
12575 | case DW_SECT_ABBREV_V5: | |
12576 | sections.abbrev_offset = offset; | |
12577 | sections.abbrev_size = size; | |
12578 | break; | |
12579 | case DW_SECT_INFO_V5: | |
12580 | sections.info_or_types_offset = offset; | |
12581 | sections.info_or_types_size = size; | |
12582 | break; | |
12583 | case DW_SECT_LINE_V5: | |
12584 | sections.line_offset = offset; | |
12585 | sections.line_size = size; | |
12586 | break; | |
12587 | case DW_SECT_LOCLISTS_V5: | |
12588 | sections.loclists_offset = offset; | |
12589 | sections.loclists_size = size; | |
12590 | break; | |
12591 | case DW_SECT_MACRO_V5: | |
12592 | sections.macro_offset = offset; | |
12593 | sections.macro_size = size; | |
12594 | break; | |
12595 | case DW_SECT_RNGLISTS_V5: | |
12596 | sections.rnglists_offset = offset; | |
12597 | sections.rnglists_size = size; | |
12598 | break; | |
12599 | case DW_SECT_STR_OFFSETS_V5: | |
12600 | sections.str_offsets_offset = offset; | |
12601 | sections.str_offsets_size = size; | |
12602 | break; | |
12603 | case DW_SECT_RESERVED_V5: | |
12604 | default: | |
12605 | break; | |
12606 | } | |
d2854d8d CT |
12607 | } |
12608 | ||
12609 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12610 | have dwo_unit "live" in that. At least for now. | |
12611 | ||
12612 | The DWP file can be made up of a random collection of CUs and TUs. | |
12613 | However, for each CU + set of TUs that came from the same original DWO | |
12614 | file, we can combine them back into a virtual DWO file to save space | |
12615 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12616 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12617 | ||
12618 | std::string virtual_dwo_name = | |
12619 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld-%ld-%ld", | |
dda83cd7 SM |
12620 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), |
12621 | (long) (sections.line_size ? sections.line_offset : 0), | |
12622 | (long) (sections.loclists_size ? sections.loclists_offset : 0), | |
12623 | (long) (sections.str_offsets_size | |
12624 | ? sections.str_offsets_offset : 0), | |
12625 | (long) (sections.macro_size ? sections.macro_offset : 0), | |
12626 | (long) (sections.rnglists_size ? sections.rnglists_offset: 0)); | |
d2854d8d CT |
12627 | /* Can we use an existing virtual DWO file? */ |
12628 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, | |
dda83cd7 SM |
12629 | virtual_dwo_name.c_str (), |
12630 | comp_dir); | |
d2854d8d CT |
12631 | /* Create one if necessary. */ |
12632 | if (*dwo_file_slot == NULL) | |
12633 | { | |
6f738b01 SM |
12634 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12635 | virtual_dwo_name.c_str ()); | |
12636 | ||
d2854d8d CT |
12637 | dwo_file = new struct dwo_file; |
12638 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); | |
12639 | dwo_file->comp_dir = comp_dir; | |
12640 | dwo_file->sections.abbrev = | |
dda83cd7 SM |
12641 | create_dwp_v2_or_v5_section (per_objfile, |
12642 | &dwp_file->sections.abbrev, | |
12643 | sections.abbrev_offset, | |
12644 | sections.abbrev_size); | |
d2854d8d | 12645 | dwo_file->sections.line = |
dda83cd7 SM |
12646 | create_dwp_v2_or_v5_section (per_objfile, |
12647 | &dwp_file->sections.line, | |
12648 | sections.line_offset, sections.line_size); | |
d2854d8d | 12649 | dwo_file->sections.macro = |
dda83cd7 SM |
12650 | create_dwp_v2_or_v5_section (per_objfile, |
12651 | &dwp_file->sections.macro, | |
12652 | sections.macro_offset, | |
12653 | sections.macro_size); | |
d2854d8d | 12654 | dwo_file->sections.loclists = |
dda83cd7 SM |
12655 | create_dwp_v2_or_v5_section (per_objfile, |
12656 | &dwp_file->sections.loclists, | |
12657 | sections.loclists_offset, | |
12658 | sections.loclists_size); | |
d2854d8d | 12659 | dwo_file->sections.rnglists = |
dda83cd7 SM |
12660 | create_dwp_v2_or_v5_section (per_objfile, |
12661 | &dwp_file->sections.rnglists, | |
12662 | sections.rnglists_offset, | |
12663 | sections.rnglists_size); | |
d2854d8d | 12664 | dwo_file->sections.str_offsets = |
dda83cd7 SM |
12665 | create_dwp_v2_or_v5_section (per_objfile, |
12666 | &dwp_file->sections.str_offsets, | |
12667 | sections.str_offsets_offset, | |
12668 | sections.str_offsets_size); | |
d2854d8d CT |
12669 | /* The "str" section is global to the entire DWP file. */ |
12670 | dwo_file->sections.str = dwp_file->sections.str; | |
12671 | /* The info or types section is assigned below to dwo_unit, | |
dda83cd7 SM |
12672 | there's no need to record it in dwo_file. |
12673 | Also, we can't simply record type sections in dwo_file because | |
12674 | we record a pointer into the vector in dwo_unit. As we collect more | |
12675 | types we'll grow the vector and eventually have to reallocate space | |
12676 | for it, invalidating all copies of pointers into the previous | |
12677 | contents. */ | |
d2854d8d CT |
12678 | *dwo_file_slot = dwo_file; |
12679 | } | |
12680 | else | |
12681 | { | |
6f738b01 SM |
12682 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12683 | virtual_dwo_name.c_str ()); | |
12684 | ||
d2854d8d CT |
12685 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
12686 | } | |
12687 | ||
12688 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); | |
12689 | dwo_unit->dwo_file = dwo_file; | |
12690 | dwo_unit->signature = signature; | |
12691 | dwo_unit->section | |
12692 | = XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); | |
12693 | *dwo_unit->section = create_dwp_v2_or_v5_section (per_objfile, | |
dda83cd7 SM |
12694 | &dwp_file->sections.info, |
12695 | sections.info_or_types_offset, | |
12696 | sections.info_or_types_size); | |
73869dc2 DE |
12697 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
12698 | ||
12699 | return dwo_unit; | |
12700 | } | |
12701 | ||
57d63ce2 DE |
12702 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12703 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12704 | |
12705 | static struct dwo_unit * | |
976ca316 | 12706 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12707 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12708 | ULONGEST signature, int is_debug_types) |
80626a55 | 12709 | { |
57d63ce2 DE |
12710 | const struct dwp_hash_table *dwp_htab = |
12711 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12712 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12713 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12714 | uint32_t hash = signature & mask; |
12715 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12716 | unsigned int i; | |
12717 | void **slot; | |
870f88f7 | 12718 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12719 | |
12720 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12721 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12722 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12723 | ? dwp_file->loaded_tus.get () |
12724 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12725 | &find_dwo_cu, INSERT); |
80626a55 DE |
12726 | |
12727 | if (*slot != NULL) | |
9a3c8263 | 12728 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12729 | |
12730 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12731 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12732 | { |
12733 | ULONGEST signature_in_table; | |
12734 | ||
12735 | signature_in_table = | |
57d63ce2 | 12736 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12737 | if (signature_in_table == signature) |
12738 | { | |
57d63ce2 DE |
12739 | uint32_t unit_index = |
12740 | read_4_bytes (dbfd, | |
12741 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12742 | |
73869dc2 DE |
12743 | if (dwp_file->version == 1) |
12744 | { | |
976ca316 SM |
12745 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12746 | unit_index, comp_dir, | |
12747 | signature, is_debug_types); | |
73869dc2 | 12748 | } |
d2854d8d | 12749 | else if (dwp_file->version == 2) |
73869dc2 | 12750 | { |
976ca316 SM |
12751 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12752 | unit_index, comp_dir, | |
12753 | signature, is_debug_types); | |
73869dc2 | 12754 | } |
d2854d8d CT |
12755 | else /* version == 5 */ |
12756 | { | |
12757 | *slot = create_dwo_unit_in_dwp_v5 (per_objfile, dwp_file, | |
12758 | unit_index, comp_dir, | |
12759 | signature, is_debug_types); | |
12760 | } | |
9a3c8263 | 12761 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12762 | } |
12763 | if (signature_in_table == 0) | |
12764 | return NULL; | |
12765 | hash = (hash + hash2) & mask; | |
12766 | } | |
12767 | ||
12768 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12769 | " [in module %s]"), | |
12770 | dwp_file->name); | |
12771 | } | |
12772 | ||
ab5088bf | 12773 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12774 | Open the file specified by FILE_NAME and hand it off to BFD for |
12775 | preliminary analysis. Return a newly initialized bfd *, which | |
12776 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12777 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12778 | SEARCH_CWD is true if the current directory is to be searched. |
12779 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12780 | If successful, the file is added to the bfd include table of the |
12781 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12782 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12783 | NOTE: This function is derived from symfile_bfd_open. */ |
12784 | ||
192b62ce | 12785 | static gdb_bfd_ref_ptr |
976ca316 | 12786 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12787 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12788 | { |
24b9144d | 12789 | int desc; |
9c02c129 DE |
12790 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12791 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12792 | to debug_file_directory. */ | |
e0cc99a6 | 12793 | const char *search_path; |
9c02c129 DE |
12794 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12795 | ||
e0cc99a6 | 12796 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12797 | if (search_cwd) |
12798 | { | |
12799 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12800 | { |
12801 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12802 | debug_file_directory, | |
12803 | (char *) NULL)); | |
12804 | search_path = search_path_holder.get (); | |
12805 | } | |
6ac97d4c | 12806 | else |
e0cc99a6 | 12807 | search_path = "."; |
6ac97d4c | 12808 | } |
9c02c129 | 12809 | else |
e0cc99a6 | 12810 | search_path = debug_file_directory; |
3019eac3 | 12811 | |
24b9144d | 12812 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12813 | if (is_dwp) |
12814 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12815 | |
12816 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12817 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12818 | O_RDONLY | O_BINARY, &absolute_name); |
12819 | if (desc < 0) | |
12820 | return NULL; | |
12821 | ||
e0cc99a6 TT |
12822 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12823 | gnutarget, desc)); | |
9c02c129 DE |
12824 | if (sym_bfd == NULL) |
12825 | return NULL; | |
192b62ce | 12826 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12827 | |
192b62ce TT |
12828 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12829 | return NULL; | |
3019eac3 | 12830 | |
13aaf454 DE |
12831 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12832 | This is important because things like demangled_names_hash lives in the | |
12833 | objfile's per_bfd space and may have references to things like symbol | |
12834 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12835 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12836 | |
3019eac3 DE |
12837 | return sym_bfd; |
12838 | } | |
12839 | ||
ab5088bf | 12840 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12841 | COMP_DIR is the DW_AT_comp_dir attribute. |
12842 | The result is the bfd handle of the file. | |
12843 | If there is a problem finding or opening the file, return NULL. | |
12844 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12845 | same as symfile_bfd_open. */ | |
12846 | ||
192b62ce | 12847 | static gdb_bfd_ref_ptr |
976ca316 | 12848 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12849 | const char *file_name, const char *comp_dir) |
3019eac3 | 12850 | { |
80626a55 | 12851 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12852 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12853 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12854 | |
12855 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12856 | ||
12857 | if (comp_dir != NULL) | |
12858 | { | |
43816ebc TT |
12859 | gdb::unique_xmalloc_ptr<char> path_to_try |
12860 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12861 | |
12862 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12863 | search path, which seems useful. */ | |
976ca316 | 12864 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12865 | 0 /*is_dwp*/, |
192b62ce | 12866 | 1 /*search_cwd*/)); |
3019eac3 DE |
12867 | if (abfd != NULL) |
12868 | return abfd; | |
12869 | } | |
12870 | ||
12871 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12872 | is a list of paths. */ | |
12873 | ||
12874 | if (*debug_file_directory == '\0') | |
12875 | return NULL; | |
12876 | ||
976ca316 | 12877 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12878 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12879 | } |
12880 | ||
80626a55 DE |
12881 | /* This function is mapped across the sections and remembers the offset and |
12882 | size of each of the DWO debugging sections we are interested in. */ | |
12883 | ||
12884 | static void | |
5bb6e9dd TT |
12885 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, |
12886 | dwo_sections *dwo_sections) | |
80626a55 | 12887 | { |
80626a55 DE |
12888 | const struct dwop_section_names *names = &dwop_section_names; |
12889 | ||
12890 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12891 | { | |
049412e3 | 12892 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12893 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12894 | } |
12895 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12896 | { | |
049412e3 | 12897 | dwo_sections->info.s.section = sectp; |
fd361982 | 12898 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12899 | } |
12900 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12901 | { | |
049412e3 | 12902 | dwo_sections->line.s.section = sectp; |
fd361982 | 12903 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12904 | } |
12905 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12906 | { | |
049412e3 | 12907 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12908 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12909 | } |
41144253 | 12910 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12911 | { | |
12912 | dwo_sections->loclists.s.section = sectp; | |
12913 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12914 | } | |
80626a55 DE |
12915 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12916 | { | |
049412e3 | 12917 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12918 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12919 | } |
12920 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12921 | { | |
049412e3 | 12922 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12923 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12924 | } |
d0ce17d8 CT |
12925 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) |
12926 | { | |
12927 | dwo_sections->rnglists.s.section = sectp; | |
12928 | dwo_sections->rnglists.size = bfd_section_size (sectp); | |
12929 | } | |
80626a55 DE |
12930 | else if (section_is_p (sectp->name, &names->str_dwo)) |
12931 | { | |
049412e3 | 12932 | dwo_sections->str.s.section = sectp; |
fd361982 | 12933 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12934 | } |
12935 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12936 | { | |
049412e3 | 12937 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12938 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12939 | } |
12940 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12941 | { | |
12942 | struct dwarf2_section_info type_section; | |
12943 | ||
12944 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12945 | type_section.s.section = sectp; |
fd361982 | 12946 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12947 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12948 | } |
12949 | } | |
12950 | ||
ab5088bf | 12951 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12952 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12953 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12954 | |
12955 | static struct dwo_file * | |
4ab09049 SM |
12956 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12957 | const char *comp_dir) | |
3019eac3 | 12958 | { |
976ca316 | 12959 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12960 | |
976ca316 | 12961 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12962 | if (dbfd == NULL) |
12963 | { | |
6f738b01 SM |
12964 | dwarf_read_debug_printf ("DWO file not found: %s", dwo_name); |
12965 | ||
80626a55 DE |
12966 | return NULL; |
12967 | } | |
263db9a1 | 12968 | |
51ac9db5 | 12969 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12970 | dwo_file->dwo_name = dwo_name; |
12971 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12972 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12973 | |
5bb6e9dd TT |
12974 | for (asection *sec : gdb_bfd_sections (dwo_file->dbfd)) |
12975 | dwarf2_locate_dwo_sections (dwo_file->dbfd.get (), sec, | |
12976 | &dwo_file->sections); | |
3019eac3 | 12977 | |
976ca316 SM |
12978 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12979 | dwo_file->cus); | |
3019eac3 | 12980 | |
d2854d8d CT |
12981 | if (cu->per_cu->dwarf_version < 5) |
12982 | { | |
12983 | create_debug_types_hash_table (per_objfile, dwo_file.get (), | |
12984 | dwo_file->sections.types, dwo_file->tus); | |
12985 | } | |
12986 | else | |
12987 | { | |
12988 | create_debug_type_hash_table (per_objfile, dwo_file.get (), | |
12989 | &dwo_file->sections.info, dwo_file->tus, | |
30c80d88 | 12990 | rcuh_kind::COMPILE); |
d2854d8d | 12991 | } |
3019eac3 | 12992 | |
6f738b01 | 12993 | dwarf_read_debug_printf ("DWO file found: %s", dwo_name); |
80626a55 | 12994 | |
263db9a1 | 12995 | return dwo_file.release (); |
3019eac3 DE |
12996 | } |
12997 | ||
80626a55 | 12998 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12999 | size of each of the DWP debugging sections common to version 1 and 2 that |
13000 | we are interested in. */ | |
3019eac3 | 13001 | |
80626a55 | 13002 | static void |
73869dc2 | 13003 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
5bb6e9dd | 13004 | dwp_file *dwp_file) |
3019eac3 | 13005 | { |
80626a55 DE |
13006 | const struct dwop_section_names *names = &dwop_section_names; |
13007 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 13008 | |
80626a55 | 13009 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 13010 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
13011 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
13012 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 13013 | |
80626a55 DE |
13014 | /* Look for specific sections that we need. */ |
13015 | if (section_is_p (sectp->name, &names->str_dwo)) | |
13016 | { | |
049412e3 | 13017 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 13018 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
13019 | } |
13020 | else if (section_is_p (sectp->name, &names->cu_index)) | |
13021 | { | |
049412e3 | 13022 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 13023 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
13024 | } |
13025 | else if (section_is_p (sectp->name, &names->tu_index)) | |
13026 | { | |
049412e3 | 13027 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 13028 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
13029 | } |
13030 | } | |
3019eac3 | 13031 | |
73869dc2 DE |
13032 | /* This function is mapped across the sections and remembers the offset and |
13033 | size of each of the DWP version 2 debugging sections that we are interested | |
13034 | in. This is split into a separate function because we don't know if we | |
d2854d8d | 13035 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ |
73869dc2 DE |
13036 | |
13037 | static void | |
13038 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13039 | { | |
9a3c8263 | 13040 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13041 | const struct dwop_section_names *names = &dwop_section_names; |
13042 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13043 | ||
13044 | /* Record the ELF section number for later lookup: this is what the | |
13045 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13046 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13047 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13048 | ||
13049 | /* Look for specific sections that we need. */ | |
13050 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13051 | { | |
049412e3 | 13052 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 13053 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
13054 | } |
13055 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13056 | { | |
049412e3 | 13057 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 13058 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
13059 | } |
13060 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13061 | { | |
049412e3 | 13062 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 13063 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
13064 | } |
13065 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13066 | { | |
049412e3 | 13067 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 13068 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
13069 | } |
13070 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13071 | { | |
049412e3 | 13072 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 13073 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
13074 | } |
13075 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13076 | { | |
049412e3 | 13077 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 13078 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
13079 | } |
13080 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13081 | { | |
049412e3 | 13082 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 13083 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
13084 | } |
13085 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13086 | { | |
049412e3 | 13087 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 13088 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
13089 | } |
13090 | } | |
13091 | ||
d2854d8d CT |
13092 | /* This function is mapped across the sections and remembers the offset and |
13093 | size of each of the DWP version 5 debugging sections that we are interested | |
13094 | in. This is split into a separate function because we don't know if we | |
13095 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ | |
13096 | ||
13097 | static void | |
13098 | dwarf2_locate_v5_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13099 | { | |
13100 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; | |
13101 | const struct dwop_section_names *names = &dwop_section_names; | |
13102 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13103 | ||
13104 | /* Record the ELF section number for later lookup: this is what the | |
13105 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13106 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13107 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13108 | ||
13109 | /* Look for specific sections that we need. */ | |
13110 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13111 | { | |
13112 | dwp_file->sections.abbrev.s.section = sectp; | |
13113 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); | |
13114 | } | |
13115 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13116 | { | |
13117 | dwp_file->sections.info.s.section = sectp; | |
13118 | dwp_file->sections.info.size = bfd_section_size (sectp); | |
13119 | } | |
13120 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13121 | { | |
13122 | dwp_file->sections.line.s.section = sectp; | |
13123 | dwp_file->sections.line.size = bfd_section_size (sectp); | |
13124 | } | |
13125 | else if (section_is_p (sectp->name, &names->loclists_dwo)) | |
13126 | { | |
13127 | dwp_file->sections.loclists.s.section = sectp; | |
13128 | dwp_file->sections.loclists.size = bfd_section_size (sectp); | |
13129 | } | |
13130 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13131 | { | |
13132 | dwp_file->sections.macro.s.section = sectp; | |
13133 | dwp_file->sections.macro.size = bfd_section_size (sectp); | |
13134 | } | |
13135 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) | |
13136 | { | |
13137 | dwp_file->sections.rnglists.s.section = sectp; | |
13138 | dwp_file->sections.rnglists.size = bfd_section_size (sectp); | |
13139 | } | |
13140 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13141 | { | |
13142 | dwp_file->sections.str_offsets.s.section = sectp; | |
13143 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); | |
13144 | } | |
13145 | } | |
13146 | ||
80626a55 | 13147 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13148 | |
80626a55 DE |
13149 | static hashval_t |
13150 | hash_dwp_loaded_cutus (const void *item) | |
13151 | { | |
9a3c8263 | 13152 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13153 | |
80626a55 DE |
13154 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13155 | return dwo_unit->signature; | |
3019eac3 DE |
13156 | } |
13157 | ||
80626a55 | 13158 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13159 | |
80626a55 DE |
13160 | static int |
13161 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13162 | { |
9a3c8263 SM |
13163 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13164 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13165 | |
80626a55 DE |
13166 | return dua->signature == dub->signature; |
13167 | } | |
3019eac3 | 13168 | |
80626a55 | 13169 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13170 | |
48b490f2 | 13171 | static htab_up |
298e9637 | 13172 | allocate_dwp_loaded_cutus_table () |
80626a55 | 13173 | { |
48b490f2 TT |
13174 | return htab_up (htab_create_alloc (3, |
13175 | hash_dwp_loaded_cutus, | |
13176 | eq_dwp_loaded_cutus, | |
13177 | NULL, xcalloc, xfree)); | |
80626a55 | 13178 | } |
3019eac3 | 13179 | |
ab5088bf DE |
13180 | /* Try to open DWP file FILE_NAME. |
13181 | The result is the bfd handle of the file. | |
13182 | If there is a problem finding or opening the file, return NULL. | |
13183 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13184 | same as symfile_bfd_open. */ | |
13185 | ||
192b62ce | 13186 | static gdb_bfd_ref_ptr |
976ca316 | 13187 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 13188 | { |
976ca316 | 13189 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 13190 | 1 /*is_dwp*/, |
192b62ce | 13191 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13192 | if (abfd != NULL) |
13193 | return abfd; | |
13194 | ||
13195 | /* Work around upstream bug 15652. | |
13196 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13197 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13198 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13199 | of the executable's path may have discarded the needed info. | |
13200 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13201 | .gnu_debuglink, but that doesn't exist yet.] | |
13202 | Strip the directory from FILE_NAME and search again. */ | |
13203 | if (*debug_file_directory != '\0') | |
13204 | { | |
13205 | /* Don't implicitly search the current directory here. | |
13206 | If the user wants to search "." to handle this case, | |
13207 | it must be added to debug-file-directory. */ | |
976ca316 SM |
13208 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
13209 | 1 /*is_dwp*/, | |
6ac97d4c DE |
13210 | 0 /*search_cwd*/); |
13211 | } | |
13212 | ||
13213 | return NULL; | |
ab5088bf DE |
13214 | } |
13215 | ||
80626a55 DE |
13216 | /* Initialize the use of the DWP file for the current objfile. |
13217 | By convention the name of the DWP file is ${objfile}.dwp. | |
13218 | The result is NULL if it can't be found. */ | |
a766d390 | 13219 | |
400174b1 | 13220 | static std::unique_ptr<struct dwp_file> |
976ca316 | 13221 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 13222 | { |
976ca316 | 13223 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 13224 | |
82bf32bc JK |
13225 | /* Try to find first .dwp for the binary file before any symbolic links |
13226 | resolving. */ | |
6c447423 DE |
13227 | |
13228 | /* If the objfile is a debug file, find the name of the real binary | |
13229 | file and get the name of dwp file from there. */ | |
d721ba37 | 13230 | std::string dwp_name; |
6c447423 DE |
13231 | if (objfile->separate_debug_objfile_backlink != NULL) |
13232 | { | |
13233 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13234 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13235 | |
d721ba37 | 13236 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13237 | } |
13238 | else | |
d721ba37 PA |
13239 | dwp_name = objfile->original_name; |
13240 | ||
13241 | dwp_name += ".dwp"; | |
80626a55 | 13242 | |
976ca316 | 13243 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13244 | if (dbfd == NULL |
13245 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13246 | { | |
13247 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13248 | dwp_name = objfile_name (objfile); |
13249 | dwp_name += ".dwp"; | |
976ca316 | 13250 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13251 | } |
13252 | ||
80626a55 DE |
13253 | if (dbfd == NULL) |
13254 | { | |
6f738b01 SM |
13255 | dwarf_read_debug_printf ("DWP file not found: %s", dwp_name.c_str ()); |
13256 | ||
400174b1 | 13257 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13258 | } |
400174b1 TT |
13259 | |
13260 | const char *name = bfd_get_filename (dbfd.get ()); | |
13261 | std::unique_ptr<struct dwp_file> dwp_file | |
13262 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13263 | |
0a0f4c01 | 13264 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 13265 | dwp_file->elf_sections = |
976ca316 | 13266 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
13267 | dwp_file->num_sections, asection *); |
13268 | ||
5bb6e9dd TT |
13269 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13270 | dwarf2_locate_common_dwp_sections (dwp_file->dbfd.get (), sec, | |
13271 | dwp_file.get ()); | |
80626a55 | 13272 | |
976ca316 | 13273 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 13274 | |
976ca316 | 13275 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 13276 | |
73869dc2 | 13277 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13278 | if (dwp_file->cus && dwp_file->tus |
13279 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13280 | { |
13281 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13282 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13283 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13284 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13285 | " TU version %s [in DWP file %s]"), | |
13286 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13287 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13288 | } |
08302ed2 DE |
13289 | |
13290 | if (dwp_file->cus) | |
13291 | dwp_file->version = dwp_file->cus->version; | |
13292 | else if (dwp_file->tus) | |
13293 | dwp_file->version = dwp_file->tus->version; | |
13294 | else | |
13295 | dwp_file->version = 2; | |
73869dc2 | 13296 | |
5bb6e9dd TT |
13297 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13298 | { | |
13299 | if (dwp_file->version == 2) | |
13300 | dwarf2_locate_v2_dwp_sections (dwp_file->dbfd.get (), sec, | |
13301 | dwp_file.get ()); | |
13302 | else | |
13303 | dwarf2_locate_v5_dwp_sections (dwp_file->dbfd.get (), sec, | |
13304 | dwp_file.get ()); | |
13305 | } | |
73869dc2 | 13306 | |
298e9637 SM |
13307 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
13308 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 13309 | |
6f738b01 SM |
13310 | dwarf_read_debug_printf ("DWP file found: %s", dwp_file->name); |
13311 | dwarf_read_debug_printf (" %s CUs, %s TUs", | |
13312 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13313 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13314 | |
13315 | return dwp_file; | |
3019eac3 | 13316 | } |
c906108c | 13317 | |
ab5088bf DE |
13318 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13319 | ||
13320 | static struct dwp_file * | |
976ca316 | 13321 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 13322 | { |
976ca316 | 13323 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 13324 | { |
976ca316 SM |
13325 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
13326 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 13327 | } |
976ca316 | 13328 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
13329 | } |
13330 | ||
80626a55 DE |
13331 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13332 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13333 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13334 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13335 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13336 | ||
13337 | This is called, for example, when wanting to read a variable with a | |
13338 | complex location. Therefore we don't want to do file i/o for every call. | |
13339 | Therefore we don't want to look for a DWO file on every call. | |
13340 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13341 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13342 | for a DWO file. | |
13343 | ||
1c658ad5 | 13344 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13345 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13346 | |
3019eac3 | 13347 | static struct dwo_unit * |
4ab09049 | 13348 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 13349 | ULONGEST signature, int is_debug_types) |
3019eac3 | 13350 | { |
976ca316 SM |
13351 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13352 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
13353 | const char *kind = is_debug_types ? "TU" : "CU"; |
13354 | void **dwo_file_slot; | |
3019eac3 | 13355 | struct dwo_file *dwo_file; |
80626a55 | 13356 | struct dwp_file *dwp_file; |
cb1df416 | 13357 | |
6a506a2d DE |
13358 | /* First see if there's a DWP file. |
13359 | If we have a DWP file but didn't find the DWO inside it, don't | |
13360 | look for the original DWO file. It makes gdb behave differently | |
13361 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13362 | |
976ca316 | 13363 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 13364 | if (dwp_file != NULL) |
cf2c3c16 | 13365 | { |
80626a55 DE |
13366 | const struct dwp_hash_table *dwp_htab = |
13367 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13368 | ||
13369 | if (dwp_htab != NULL) | |
13370 | { | |
13371 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
13372 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
13373 | is_debug_types); | |
80626a55 DE |
13374 | |
13375 | if (dwo_cutu != NULL) | |
13376 | { | |
6f738b01 SM |
13377 | dwarf_read_debug_printf ("Virtual DWO %s %s found: @%s", |
13378 | kind, hex_string (signature), | |
13379 | host_address_to_string (dwo_cutu)); | |
13380 | ||
80626a55 DE |
13381 | return dwo_cutu; |
13382 | } | |
13383 | } | |
13384 | } | |
6a506a2d | 13385 | else |
80626a55 | 13386 | { |
6a506a2d | 13387 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13388 | |
976ca316 | 13389 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 13390 | if (*dwo_file_slot == NULL) |
80626a55 | 13391 | { |
6a506a2d | 13392 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 13393 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 13394 | } |
6a506a2d | 13395 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13396 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13397 | |
6a506a2d | 13398 | if (dwo_file != NULL) |
19c3d4c9 | 13399 | { |
6a506a2d DE |
13400 | struct dwo_unit *dwo_cutu = NULL; |
13401 | ||
13402 | if (is_debug_types && dwo_file->tus) | |
13403 | { | |
13404 | struct dwo_unit find_dwo_cutu; | |
13405 | ||
13406 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13407 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 13408 | dwo_cutu |
b0b6a987 TT |
13409 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
13410 | &find_dwo_cutu); | |
6a506a2d | 13411 | } |
33c5cd75 | 13412 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13413 | { |
33c5cd75 DB |
13414 | struct dwo_unit find_dwo_cutu; |
13415 | ||
13416 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13417 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 13418 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 13419 | &find_dwo_cutu); |
6a506a2d DE |
13420 | } |
13421 | ||
13422 | if (dwo_cutu != NULL) | |
13423 | { | |
6f738b01 SM |
13424 | dwarf_read_debug_printf ("DWO %s %s(%s) found: @%s", |
13425 | kind, dwo_name, hex_string (signature), | |
13426 | host_address_to_string (dwo_cutu)); | |
13427 | ||
6a506a2d | 13428 | return dwo_cutu; |
80626a55 DE |
13429 | } |
13430 | } | |
2e276125 | 13431 | } |
9cdd5dbd | 13432 | |
80626a55 DE |
13433 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13434 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13435 | correctly to find the file. */ | |
13436 | ||
6f738b01 SM |
13437 | dwarf_read_debug_printf ("DWO %s %s(%s) not found", |
13438 | kind, dwo_name, hex_string (signature)); | |
3019eac3 | 13439 | |
6656a72d DE |
13440 | /* This is a warning and not a complaint because it can be caused by |
13441 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13442 | { |
13443 | /* Print the name of the DWP file if we looked there, helps the user | |
13444 | better diagnose the problem. */ | |
791afaa2 | 13445 | std::string dwp_text; |
43942612 DE |
13446 | |
13447 | if (dwp_file != NULL) | |
791afaa2 TT |
13448 | dwp_text = string_printf (" [in DWP file %s]", |
13449 | lbasename (dwp_file->name)); | |
43942612 | 13450 | |
9d8780f0 | 13451 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 13452 | " [in module %s]"), |
4ab09049 SM |
13453 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
13454 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 13455 | } |
3019eac3 | 13456 | return NULL; |
5fb290d7 DJ |
13457 | } |
13458 | ||
80626a55 DE |
13459 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13460 | See lookup_dwo_cutu_unit for details. */ | |
13461 | ||
13462 | static struct dwo_unit * | |
4ab09049 | 13463 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
13464 | ULONGEST signature) |
13465 | { | |
4ab09049 SM |
13466 | gdb_assert (!cu->per_cu->is_debug_types); |
13467 | ||
13468 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
13469 | } |
13470 | ||
13471 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13472 | See lookup_dwo_cutu_unit for details. */ | |
13473 | ||
13474 | static struct dwo_unit * | |
4ab09049 | 13475 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 13476 | { |
4ab09049 SM |
13477 | gdb_assert (cu->per_cu->is_debug_types); |
13478 | ||
13479 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
13480 | ||
13481 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
13482 | } |
13483 | ||
89e63ee4 DE |
13484 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13485 | ||
13486 | static int | |
13487 | queue_and_load_dwo_tu (void **slot, void *info) | |
13488 | { | |
13489 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 13490 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 13491 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 13492 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
13493 | |
13494 | if (sig_type != NULL) | |
13495 | { | |
13496 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13497 | ||
13498 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13499 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13500 | while processing PER_CU. */ | |
120ce1b5 | 13501 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
13502 | load_full_type_unit (sig_cu, cu->per_objfile); |
13503 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
13504 | } |
13505 | ||
13506 | return 1; | |
13507 | } | |
13508 | ||
1b555f17 | 13509 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
13510 | The DWO may have the only definition of the type, though it may not be |
13511 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13512 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13513 | ||
13514 | static void | |
1b555f17 | 13515 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
13516 | { |
13517 | struct dwo_unit *dwo_unit; | |
13518 | struct dwo_file *dwo_file; | |
13519 | ||
1b555f17 SM |
13520 | gdb_assert (cu != nullptr); |
13521 | gdb_assert (!cu->per_cu->is_debug_types); | |
13522 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 13523 | |
1b555f17 | 13524 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
13525 | gdb_assert (dwo_unit != NULL); |
13526 | ||
13527 | dwo_file = dwo_unit->dwo_file; | |
13528 | if (dwo_file->tus != NULL) | |
1b555f17 | 13529 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
13530 | } |
13531 | ||
3019eac3 | 13532 | /* Read in various DIEs. */ |
348e048f | 13533 | |
d389af10 | 13534 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13535 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13536 | already referenced by DW_AT_abstract_origin from the children of the | |
13537 | current DIE. */ | |
d389af10 JK |
13538 | |
13539 | static void | |
13540 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13541 | { | |
13542 | struct die_info *child_die; | |
791afaa2 | 13543 | sect_offset *offsetp; |
d389af10 JK |
13544 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13545 | struct die_info *origin_die; | |
13546 | /* Iterator of the ORIGIN_DIE children. */ | |
13547 | struct die_info *origin_child_die; | |
d389af10 | 13548 | struct attribute *attr; |
cd02d79d PA |
13549 | struct dwarf2_cu *origin_cu; |
13550 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13551 | |
13552 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13553 | if (!attr) | |
13554 | return; | |
13555 | ||
cd02d79d PA |
13556 | /* Note that following die references may follow to a die in a |
13557 | different cu. */ | |
13558 | ||
13559 | origin_cu = cu; | |
13560 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13561 | ||
13562 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13563 | symbols in. */ | |
13564 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13565 | origin_cu->list_in_scope = cu->list_in_scope; | |
13566 | ||
edb3359d DJ |
13567 | if (die->tag != origin_die->tag |
13568 | && !(die->tag == DW_TAG_inlined_subroutine | |
13569 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13570 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13571 | sect_offset_str (die->sect_off), |
13572 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13573 | |
791afaa2 | 13574 | std::vector<sect_offset> offsets; |
d389af10 | 13575 | |
3ea89b92 PMR |
13576 | for (child_die = die->child; |
13577 | child_die && child_die->tag; | |
436c571c | 13578 | child_die = child_die->sibling) |
3ea89b92 PMR |
13579 | { |
13580 | struct die_info *child_origin_die; | |
13581 | struct dwarf2_cu *child_origin_cu; | |
13582 | ||
13583 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13584 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13585 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13586 | present in the abstract instance but not referenced in the concrete | |
13587 | one. */ | |
216f72a1 | 13588 | if (child_die->tag == DW_TAG_call_site |
dda83cd7 | 13589 | || child_die->tag == DW_TAG_GNU_call_site) |
3ea89b92 PMR |
13590 | continue; |
13591 | ||
c38f313d DJ |
13592 | /* For each CHILD_DIE, find the corresponding child of |
13593 | ORIGIN_DIE. If there is more than one layer of | |
13594 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13595 | but GCC versions at least through 4.4 generate this (GCC PR | |
13596 | 40573). */ | |
3ea89b92 PMR |
13597 | child_origin_die = child_die; |
13598 | child_origin_cu = cu; | |
c38f313d DJ |
13599 | while (1) |
13600 | { | |
cd02d79d PA |
13601 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13602 | child_origin_cu); | |
c38f313d DJ |
13603 | if (attr == NULL) |
13604 | break; | |
cd02d79d PA |
13605 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13606 | &child_origin_cu); | |
c38f313d DJ |
13607 | } |
13608 | ||
d389af10 JK |
13609 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13610 | counterpart may exist. */ | |
c38f313d | 13611 | if (child_origin_die != child_die) |
d389af10 | 13612 | { |
edb3359d DJ |
13613 | if (child_die->tag != child_origin_die->tag |
13614 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13615 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13616 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13617 | "different tags"), |
9d8780f0 SM |
13618 | sect_offset_str (child_die->sect_off), |
13619 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13620 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13621 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13622 | "different parents"), |
9d8780f0 SM |
13623 | sect_offset_str (child_die->sect_off), |
13624 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13625 | else |
791afaa2 | 13626 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13627 | } |
d389af10 | 13628 | } |
791afaa2 TT |
13629 | std::sort (offsets.begin (), offsets.end ()); |
13630 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13631 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13632 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13633 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13634 | "to DIE %s as their abstract origin"), |
13635 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13636 | |
791afaa2 | 13637 | offsetp = offsets.data (); |
d389af10 JK |
13638 | origin_child_die = origin_die->child; |
13639 | while (origin_child_die && origin_child_die->tag) | |
13640 | { | |
13641 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13642 | while (offsetp < offsets_end |
9c541725 | 13643 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13644 | offsetp++; |
b64f50a1 | 13645 | if (offsetp >= offsets_end |
9c541725 | 13646 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13647 | { |
adde2bff DE |
13648 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13649 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13650 | This can happen with mutually referenced abstract_origins. | |
13651 | PR 16581. */ | |
13652 | if (!origin_child_die->in_process) | |
13653 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13654 | } |
436c571c | 13655 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13656 | } |
cd02d79d | 13657 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13658 | |
13659 | if (cu != origin_cu) | |
13660 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13661 | } |
13662 | ||
c906108c | 13663 | static void |
e7c27a73 | 13664 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13665 | { |
5e22e966 | 13666 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13667 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13668 | struct context_stack *newobj; |
c906108c SS |
13669 | CORE_ADDR lowpc; |
13670 | CORE_ADDR highpc; | |
13671 | struct die_info *child_die; | |
edb3359d | 13672 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13673 | const char *name; |
e142c38c | 13674 | CORE_ADDR baseaddr; |
801e3a5b | 13675 | struct block *block; |
edb3359d | 13676 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13677 | std::vector<struct symbol *> template_args; |
34eaf542 | 13678 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13679 | |
13680 | if (inlined_func) | |
13681 | { | |
13682 | /* If we do not have call site information, we can't show the | |
13683 | caller of this inlined function. That's too confusing, so | |
13684 | only use the scope for local variables. */ | |
13685 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13686 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13687 | if (call_line == NULL || call_file == NULL) | |
13688 | { | |
13689 | read_lexical_block_scope (die, cu); | |
13690 | return; | |
13691 | } | |
13692 | } | |
c906108c | 13693 | |
b3b3bada | 13694 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13695 | |
94af9270 | 13696 | name = dwarf2_name (die, cu); |
c906108c | 13697 | |
e8d05480 JB |
13698 | /* Ignore functions with missing or empty names. These are actually |
13699 | illegal according to the DWARF standard. */ | |
13700 | if (name == NULL) | |
13701 | { | |
b98664d3 | 13702 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13703 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13704 | return; |
13705 | } | |
13706 | ||
13707 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13708 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13709 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13710 | { |
ae4d0c03 | 13711 | attr = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 13712 | if (attr == nullptr || !attr->as_boolean ()) |
b98664d3 | 13713 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13714 | "for subprogram DIE at %s"), |
13715 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13716 | return; |
13717 | } | |
c906108c | 13718 | |
3e29f34a MR |
13719 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13720 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13721 | |
34eaf542 TT |
13722 | /* If we have any template arguments, then we must allocate a |
13723 | different sort of symbol. */ | |
436c571c | 13724 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13725 | { |
13726 | if (child_die->tag == DW_TAG_template_type_param | |
13727 | || child_die->tag == DW_TAG_template_value_param) | |
13728 | { | |
8c14c3a3 | 13729 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13730 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13731 | break; |
13732 | } | |
13733 | } | |
13734 | ||
c24bdb02 | 13735 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13736 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13737 | (struct symbol *) templ_func); | |
4c2df51b | 13738 | |
81873cc8 | 13739 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13740 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13741 | cu->language); |
13742 | ||
4cecd739 DJ |
13743 | /* If there is a location expression for DW_AT_frame_base, record |
13744 | it. */ | |
e142c38c | 13745 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13746 | if (attr != nullptr) |
fe978cb0 | 13747 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13748 | |
63e43d3a PMR |
13749 | /* If there is a location for the static link, record it. */ |
13750 | newobj->static_link = NULL; | |
13751 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13752 | if (attr != nullptr) |
63e43d3a | 13753 | { |
224c3ddb SM |
13754 | newobj->static_link |
13755 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13756 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13757 | cu->addr_type ()); |
63e43d3a PMR |
13758 | } |
13759 | ||
c24bdb02 | 13760 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13761 | |
639d11d3 | 13762 | if (die->child != NULL) |
c906108c | 13763 | { |
639d11d3 | 13764 | child_die = die->child; |
c906108c SS |
13765 | while (child_die && child_die->tag) |
13766 | { | |
34eaf542 TT |
13767 | if (child_die->tag == DW_TAG_template_type_param |
13768 | || child_die->tag == DW_TAG_template_value_param) | |
13769 | { | |
13770 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13771 | ||
f1078f66 | 13772 | if (arg != NULL) |
2f4732b0 | 13773 | template_args.push_back (arg); |
34eaf542 TT |
13774 | } |
13775 | else | |
13776 | process_die (child_die, cu); | |
436c571c | 13777 | child_die = child_die->sibling; |
c906108c SS |
13778 | } |
13779 | } | |
13780 | ||
d389af10 JK |
13781 | inherit_abstract_dies (die, cu); |
13782 | ||
4a811a97 UW |
13783 | /* If we have a DW_AT_specification, we might need to import using |
13784 | directives from the context of the specification DIE. See the | |
13785 | comment in determine_prefix. */ | |
13786 | if (cu->language == language_cplus | |
13787 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13788 | { | |
13789 | struct dwarf2_cu *spec_cu = cu; | |
13790 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13791 | ||
13792 | while (spec_die) | |
13793 | { | |
13794 | child_die = spec_die->child; | |
13795 | while (child_die && child_die->tag) | |
13796 | { | |
13797 | if (child_die->tag == DW_TAG_imported_module) | |
13798 | process_die (child_die, spec_cu); | |
436c571c | 13799 | child_die = child_die->sibling; |
4a811a97 UW |
13800 | } |
13801 | ||
13802 | /* In some cases, GCC generates specification DIEs that | |
13803 | themselves contain DW_AT_specification attributes. */ | |
13804 | spec_die = die_specification (spec_die, &spec_cu); | |
13805 | } | |
13806 | } | |
13807 | ||
c24bdb02 | 13808 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13809 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13810 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13811 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13812 | |
df8a16a1 | 13813 | /* For C++, set the block's scope. */ |
45280282 IB |
13814 | if ((cu->language == language_cplus |
13815 | || cu->language == language_fortran | |
c44af4eb TT |
13816 | || cu->language == language_d |
13817 | || cu->language == language_rust) | |
4d4ec4e5 | 13818 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13819 | block_set_scope (block, determine_prefix (die, cu), |
13820 | &objfile->objfile_obstack); | |
df8a16a1 | 13821 | |
801e3a5b JB |
13822 | /* If we have address ranges, record them. */ |
13823 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13824 | |
a60f3166 | 13825 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13826 | |
34eaf542 | 13827 | /* Attach template arguments to function. */ |
2f4732b0 | 13828 | if (!template_args.empty ()) |
34eaf542 TT |
13829 | { |
13830 | gdb_assert (templ_func != NULL); | |
13831 | ||
2f4732b0 | 13832 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13833 | templ_func->template_arguments |
dda83cd7 | 13834 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
8d749320 | 13835 | templ_func->n_template_arguments); |
34eaf542 | 13836 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13837 | template_args.data (), |
34eaf542 | 13838 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13839 | |
13840 | /* Make sure that the symtab is set on the new symbols. Even | |
13841 | though they don't appear in this symtab directly, other parts | |
13842 | of gdb assume that symbols do, and this is reasonably | |
13843 | true. */ | |
8634679f | 13844 | for (symbol *sym : template_args) |
3e1d3d8c | 13845 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13846 | } |
13847 | ||
208d8187 JB |
13848 | /* In C++, we can have functions nested inside functions (e.g., when |
13849 | a function declares a class that has methods). This means that | |
13850 | when we finish processing a function scope, we may need to go | |
13851 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13852 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13853 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13854 | |
921e78cf JB |
13855 | /* If we've finished processing a top-level function, subsequent |
13856 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13857 | if (cu->get_builder ()->outermost_context_p ()) |
13858 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13859 | } |
13860 | ||
13861 | /* Process all the DIES contained within a lexical block scope. Start | |
13862 | a new scope, process the dies, and then close the scope. */ | |
13863 | ||
13864 | static void | |
e7c27a73 | 13865 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13866 | { |
5e22e966 | 13867 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13868 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13869 | CORE_ADDR lowpc, highpc; |
13870 | struct die_info *child_die; | |
e142c38c DJ |
13871 | CORE_ADDR baseaddr; |
13872 | ||
b3b3bada | 13873 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13874 | |
13875 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13876 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13877 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13878 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13879 | describe ranges. */ |
e385593e JK |
13880 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13881 | { | |
13882 | case PC_BOUNDS_NOT_PRESENT: | |
13883 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13884 | there was no wrapping by that DW_TAG_lexical_block. | |
13885 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13886 | for (child_die = die->child; | |
13887 | child_die != NULL && child_die->tag; | |
436c571c | 13888 | child_die = child_die->sibling) |
4f7bc5ed TT |
13889 | { |
13890 | /* We might already be processing this DIE. This can happen | |
13891 | in an unusual circumstance -- where a subroutine A | |
13892 | appears lexically in another subroutine B, but A actually | |
13893 | inlines B. The recursion is broken here, rather than in | |
13894 | inherit_abstract_dies, because it seems better to simply | |
13895 | drop concrete children here. */ | |
13896 | if (!child_die->in_process) | |
13897 | process_die (child_die, cu); | |
13898 | } | |
e385593e JK |
13899 | return; |
13900 | case PC_BOUNDS_INVALID: | |
13901 | return; | |
13902 | } | |
3e29f34a MR |
13903 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13904 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13905 | |
c24bdb02 | 13906 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13907 | if (die->child != NULL) |
c906108c | 13908 | { |
639d11d3 | 13909 | child_die = die->child; |
c906108c SS |
13910 | while (child_die && child_die->tag) |
13911 | { | |
e7c27a73 | 13912 | process_die (child_die, cu); |
436c571c | 13913 | child_die = child_die->sibling; |
c906108c SS |
13914 | } |
13915 | } | |
3ea89b92 | 13916 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13917 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13918 | |
c24bdb02 KS |
13919 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13920 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13921 | { |
801e3a5b | 13922 | struct block *block |
dda83cd7 | 13923 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13924 | cstk.start_addr, highpc); |
801e3a5b JB |
13925 | |
13926 | /* Note that recording ranges after traversing children, as we | |
dda83cd7 SM |
13927 | do here, means that recording a parent's ranges entails |
13928 | walking across all its children's ranges as they appear in | |
13929 | the address map, which is quadratic behavior. | |
13930 | ||
13931 | It would be nicer to record the parent's ranges before | |
13932 | traversing its children, simply overriding whatever you find | |
13933 | there. But since we don't even decide whether to create a | |
13934 | block until after we've traversed its children, that's hard | |
13935 | to do. */ | |
801e3a5b | 13936 | dwarf2_record_block_ranges (die, block, baseaddr, cu); |
c906108c | 13937 | } |
c24bdb02 KS |
13938 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13939 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13940 | } |
13941 | ||
216f72a1 | 13942 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13943 | |
13944 | static void | |
13945 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13946 | { | |
5e22e966 | 13947 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13948 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13949 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13950 | CORE_ADDR pc, baseaddr; |
13951 | struct attribute *attr; | |
13952 | struct call_site *call_site, call_site_local; | |
13953 | void **slot; | |
13954 | int nparams; | |
13955 | struct die_info *child_die; | |
13956 | ||
b3b3bada | 13957 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13958 | |
216f72a1 JK |
13959 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13960 | if (attr == NULL) | |
13961 | { | |
13962 | /* This was a pre-DWARF-5 GNU extension alias | |
13963 | for DW_AT_call_return_pc. */ | |
13964 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13965 | } | |
96408a79 SA |
13966 | if (!attr) |
13967 | { | |
b98664d3 | 13968 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13969 | "DIE %s [in module %s]"), |
13970 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13971 | return; |
13972 | } | |
95f982e5 | 13973 | pc = attr->as_address () + baseaddr; |
3e29f34a | 13974 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13975 | |
13976 | if (cu->call_site_htab == NULL) | |
13977 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13978 | NULL, &objfile->objfile_obstack, | |
13979 | hashtab_obstack_allocate, NULL); | |
13980 | call_site_local.pc = pc; | |
13981 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13982 | if (*slot != NULL) | |
13983 | { | |
b98664d3 | 13984 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13985 | "DIE %s [in module %s]"), |
13986 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13987 | objfile_name (objfile)); |
96408a79 SA |
13988 | return; |
13989 | } | |
13990 | ||
13991 | /* Count parameters at the caller. */ | |
13992 | ||
13993 | nparams = 0; | |
13994 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13995 | child_die = child_die->sibling) |
96408a79 | 13996 | { |
216f72a1 | 13997 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13998 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 | 13999 | { |
b98664d3 | 14000 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
14001 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14002 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 14003 | objfile_name (objfile)); |
96408a79 SA |
14004 | continue; |
14005 | } | |
14006 | ||
14007 | nparams++; | |
14008 | } | |
14009 | ||
224c3ddb SM |
14010 | call_site |
14011 | = ((struct call_site *) | |
14012 | obstack_alloc (&objfile->objfile_obstack, | |
14013 | sizeof (*call_site) | |
14014 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
14015 | *slot = call_site; |
14016 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
14017 | call_site->pc = pc; | |
14018 | ||
216f72a1 JK |
14019 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
14020 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
14021 | { |
14022 | struct die_info *func_die; | |
14023 | ||
14024 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
14025 | for (func_die = die->parent; | |
14026 | func_die && func_die->tag != DW_TAG_subprogram | |
14027 | && func_die->tag != DW_TAG_subroutine_type; | |
14028 | func_die = func_die->parent); | |
14029 | ||
216f72a1 JK |
14030 | /* DW_AT_call_all_calls is a superset |
14031 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 14032 | if (func_die |
dda83cd7 SM |
14033 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
14034 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
216f72a1 | 14035 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
14036 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
14037 | { | |
14038 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
14039 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
14040 | both the initial caller containing the real return address PC and | |
14041 | the final callee containing the current PC of a chain of tail | |
14042 | calls do not need to have the tail call list complete. But any | |
14043 | function candidate for a virtual tail call frame searched via | |
14044 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
14045 | determined unambiguously. */ | |
14046 | } | |
14047 | else | |
14048 | { | |
14049 | struct type *func_type = NULL; | |
14050 | ||
14051 | if (func_die) | |
14052 | func_type = get_die_type (func_die, cu); | |
14053 | if (func_type != NULL) | |
14054 | { | |
78134374 | 14055 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
14056 | |
14057 | /* Enlist this call site to the function. */ | |
14058 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14059 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14060 | } | |
14061 | else | |
b98664d3 | 14062 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
14063 | "DIE %s [in module %s]"), |
14064 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14065 | } |
14066 | } | |
14067 | ||
216f72a1 JK |
14068 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14069 | if (attr == NULL) | |
14070 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14071 | if (attr == NULL) | |
14072 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14073 | if (attr == NULL) |
216f72a1 JK |
14074 | { |
14075 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14076 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14077 | } | |
96408a79 | 14078 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
9d2246fc | 14079 | if (!attr || (attr->form_is_block () && attr->as_block ()->size == 0)) |
96408a79 | 14080 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 14081 | else if (attr->form_is_block ()) |
96408a79 SA |
14082 | { |
14083 | struct dwarf2_locexpr_baton *dlbaton; | |
9d2246fc | 14084 | struct dwarf_block *block = attr->as_block (); |
96408a79 | 14085 | |
8d749320 | 14086 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
9d2246fc TT |
14087 | dlbaton->data = block->data; |
14088 | dlbaton->size = block->size; | |
a50264ba | 14089 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
14090 | dlbaton->per_cu = cu->per_cu; |
14091 | ||
14092 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14093 | } | |
cd6c91b4 | 14094 | else if (attr->form_is_ref ()) |
96408a79 | 14095 | { |
96408a79 SA |
14096 | struct dwarf2_cu *target_cu = cu; |
14097 | struct die_info *target_die; | |
14098 | ||
ac9ec31b | 14099 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 14100 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
14101 | if (die_is_declaration (target_die, target_cu)) |
14102 | { | |
7d45c7c3 | 14103 | const char *target_physname; |
9112db09 JK |
14104 | |
14105 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14106 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14107 | if (target_physname == NULL) |
9112db09 | 14108 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 14109 | if (target_physname == NULL) |
b98664d3 | 14110 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 14111 | "physname, for referencing DIE %s [in module %s]"), |
9d8780f0 | 14112 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 14113 | else |
7d455152 | 14114 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14115 | } |
14116 | else | |
14117 | { | |
14118 | CORE_ADDR lowpc; | |
14119 | ||
14120 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14121 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14122 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14123 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 14124 | "low pc, for referencing DIE %s [in module %s]"), |
9d8780f0 | 14125 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 14126 | else |
3e29f34a MR |
14127 | { |
14128 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14129 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14130 | } | |
96408a79 SA |
14131 | } |
14132 | } | |
14133 | else | |
b98664d3 | 14134 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14135 | "block nor reference, for DIE %s [in module %s]"), |
14136 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14137 | |
14138 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 14139 | call_site->per_objfile = per_objfile; |
96408a79 SA |
14140 | |
14141 | for (child_die = die->child; | |
14142 | child_die && child_die->tag; | |
436c571c | 14143 | child_die = child_die->sibling) |
96408a79 | 14144 | { |
96408a79 | 14145 | struct call_site_parameter *parameter; |
1788b2d3 | 14146 | struct attribute *loc, *origin; |
96408a79 | 14147 | |
216f72a1 | 14148 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 14149 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 SA |
14150 | { |
14151 | /* Already printed the complaint above. */ | |
14152 | continue; | |
14153 | } | |
14154 | ||
14155 | gdb_assert (call_site->parameter_count < nparams); | |
14156 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14157 | ||
1788b2d3 JK |
14158 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14159 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14160 | register is contained in DW_AT_call_value. */ |
96408a79 | 14161 | |
24c5c679 | 14162 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14163 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14164 | if (origin == NULL) | |
14165 | { | |
14166 | /* This was a pre-DWARF-5 GNU extension alias | |
14167 | for DW_AT_call_parameter. */ | |
14168 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14169 | } | |
cd6c91b4 | 14170 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 14171 | { |
1788b2d3 | 14172 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 14173 | |
0826b30a | 14174 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 14175 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
14176 | { |
14177 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14178 | binding can be done only inside one CU. Such referenced DIE | |
14179 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14180 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14181 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14182 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14183 | objfile_name (objfile)); |
d76b7dbc JK |
14184 | continue; |
14185 | } | |
9c541725 PA |
14186 | parameter->u.param_cu_off |
14187 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 14188 | } |
4fc6c0d5 | 14189 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 14190 | { |
b98664d3 | 14191 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14192 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14193 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14194 | continue; |
14195 | } | |
24c5c679 | 14196 | else |
96408a79 | 14197 | { |
9d2246fc TT |
14198 | struct dwarf_block *block = loc->as_block (); |
14199 | ||
24c5c679 | 14200 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9d2246fc | 14201 | (block->data, &block->data[block->size]); |
24c5c679 JK |
14202 | if (parameter->u.dwarf_reg != -1) |
14203 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9d2246fc TT |
14204 | else if (dwarf_block_to_sp_offset (gdbarch, block->data, |
14205 | &block->data[block->size], | |
24c5c679 JK |
14206 | ¶meter->u.fb_offset)) |
14207 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14208 | else | |
14209 | { | |
b98664d3 | 14210 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14211 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14212 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14213 | "[in module %s]"), |
9d8780f0 | 14214 | sect_offset_str (child_die->sect_off), |
9c541725 | 14215 | objfile_name (objfile)); |
24c5c679 JK |
14216 | continue; |
14217 | } | |
96408a79 SA |
14218 | } |
14219 | ||
216f72a1 JK |
14220 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14221 | if (attr == NULL) | |
14222 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 14223 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 14224 | { |
b98664d3 | 14225 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14226 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14227 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14228 | objfile_name (objfile)); |
96408a79 SA |
14229 | continue; |
14230 | } | |
9d2246fc TT |
14231 | |
14232 | struct dwarf_block *block = attr->as_block (); | |
14233 | parameter->value = block->data; | |
14234 | parameter->value_size = block->size; | |
96408a79 SA |
14235 | |
14236 | /* Parameters are not pre-cleared by memset above. */ | |
14237 | parameter->data_value = NULL; | |
14238 | parameter->data_value_size = 0; | |
14239 | call_site->parameter_count++; | |
14240 | ||
216f72a1 JK |
14241 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14242 | if (attr == NULL) | |
14243 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 14244 | if (attr != nullptr) |
96408a79 | 14245 | { |
4fc6c0d5 | 14246 | if (!attr->form_is_block ()) |
b98664d3 | 14247 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14248 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14249 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14250 | objfile_name (objfile)); |
96408a79 SA |
14251 | else |
14252 | { | |
9d2246fc TT |
14253 | block = attr->as_block (); |
14254 | parameter->data_value = block->data; | |
14255 | parameter->data_value_size = block->size; | |
96408a79 SA |
14256 | } |
14257 | } | |
14258 | } | |
14259 | } | |
14260 | ||
71a3c369 TT |
14261 | /* Helper function for read_variable. If DIE represents a virtual |
14262 | table, then return the type of the concrete object that is | |
14263 | associated with the virtual table. Otherwise, return NULL. */ | |
14264 | ||
14265 | static struct type * | |
14266 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14267 | { | |
14268 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14269 | if (attr == NULL) | |
14270 | return NULL; | |
14271 | ||
14272 | /* Find the type DIE. */ | |
14273 | struct die_info *type_die = NULL; | |
14274 | struct dwarf2_cu *type_cu = cu; | |
14275 | ||
cd6c91b4 | 14276 | if (attr->form_is_ref ()) |
71a3c369 TT |
14277 | type_die = follow_die_ref (die, attr, &type_cu); |
14278 | if (type_die == NULL) | |
14279 | return NULL; | |
14280 | ||
14281 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14282 | return NULL; | |
14283 | return die_containing_type (type_die, type_cu); | |
14284 | } | |
14285 | ||
14286 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14287 | ||
14288 | static void | |
14289 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14290 | { | |
14291 | struct rust_vtable_symbol *storage = NULL; | |
14292 | ||
14293 | if (cu->language == language_rust) | |
14294 | { | |
14295 | struct type *containing_type = rust_containing_type (die, cu); | |
14296 | ||
14297 | if (containing_type != NULL) | |
14298 | { | |
5e22e966 | 14299 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 14300 | |
8c14c3a3 | 14301 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 14302 | storage->concrete_type = containing_type; |
cf724bc9 | 14303 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14304 | } |
14305 | } | |
14306 | ||
e4a62c65 TV |
14307 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14308 | struct attribute *abstract_origin | |
14309 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14310 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14311 | if (res == NULL && loc && abstract_origin) | |
14312 | { | |
14313 | /* We have a variable without a name, but with a location and an abstract | |
14314 | origin. This may be a concrete instance of an abstract variable | |
14315 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14316 | later. */ | |
14317 | struct dwarf2_cu *origin_cu = cu; | |
14318 | struct die_info *origin_die | |
14319 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
14320 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14321 | per_objfile->per_bfd->abstract_to_concrete | |
14322 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 14323 | } |
71a3c369 TT |
14324 | } |
14325 | ||
43988095 JK |
14326 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14327 | reading .debug_rnglists. | |
14328 | Callback's type should be: | |
14329 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14330 | Return true if the attributes are present and valid, otherwise, | |
14331 | return false. */ | |
14332 | ||
14333 | template <typename Callback> | |
14334 | static bool | |
14335 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
d0ce17d8 | 14336 | dwarf_tag tag, Callback &&callback) |
43988095 | 14337 | { |
976ca316 SM |
14338 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14339 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 14340 | bfd *obfd = objfile->obfd; |
43988095 | 14341 | /* Base address selection entry. */ |
2b24b6e4 | 14342 | gdb::optional<CORE_ADDR> base; |
43988095 | 14343 | const gdb_byte *buffer; |
43988095 JK |
14344 | CORE_ADDR baseaddr; |
14345 | bool overflow = false; | |
d0ce17d8 CT |
14346 | ULONGEST addr_index; |
14347 | struct dwarf2_section_info *rnglists_section; | |
43988095 | 14348 | |
43988095 | 14349 | base = cu->base_address; |
d0ce17d8 CT |
14350 | rnglists_section = cu_debug_rnglists_section (cu, tag); |
14351 | rnglists_section->read (objfile); | |
43988095 | 14352 | |
d0ce17d8 | 14353 | if (offset >= rnglists_section->size) |
43988095 | 14354 | { |
b98664d3 | 14355 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14356 | offset); |
14357 | return false; | |
14358 | } | |
d0ce17d8 | 14359 | buffer = rnglists_section->buffer + offset; |
43988095 | 14360 | |
b3b3bada | 14361 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
14362 | |
14363 | while (1) | |
14364 | { | |
7814882a JK |
14365 | /* Initialize it due to a false compiler warning. */ |
14366 | CORE_ADDR range_beginning = 0, range_end = 0; | |
d0ce17d8 CT |
14367 | const gdb_byte *buf_end = (rnglists_section->buffer |
14368 | + rnglists_section->size); | |
43988095 JK |
14369 | unsigned int bytes_read; |
14370 | ||
14371 | if (buffer == buf_end) | |
14372 | { | |
14373 | overflow = true; | |
14374 | break; | |
14375 | } | |
14376 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14377 | switch (rlet) | |
14378 | { | |
14379 | case DW_RLE_end_of_list: | |
14380 | break; | |
14381 | case DW_RLE_base_address: | |
14382 | if (buffer + cu->header.addr_size > buf_end) | |
14383 | { | |
14384 | overflow = true; | |
14385 | break; | |
14386 | } | |
c8a7a66f | 14387 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14388 | buffer += bytes_read; |
14389 | break; | |
dda83cd7 SM |
14390 | case DW_RLE_base_addressx: |
14391 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14392 | buffer += bytes_read; | |
14393 | base = read_addr_index (cu, addr_index); | |
14394 | break; | |
43988095 JK |
14395 | case DW_RLE_start_length: |
14396 | if (buffer + cu->header.addr_size > buf_end) | |
14397 | { | |
14398 | overflow = true; | |
14399 | break; | |
14400 | } | |
c8a7a66f TT |
14401 | range_beginning = cu->header.read_address (obfd, buffer, |
14402 | &bytes_read); | |
43988095 JK |
14403 | buffer += bytes_read; |
14404 | range_end = (range_beginning | |
14405 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14406 | buffer += bytes_read; | |
14407 | if (buffer > buf_end) | |
14408 | { | |
14409 | overflow = true; | |
14410 | break; | |
14411 | } | |
14412 | break; | |
d0ce17d8 | 14413 | case DW_RLE_startx_length: |
dda83cd7 SM |
14414 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14415 | buffer += bytes_read; | |
14416 | range_beginning = read_addr_index (cu, addr_index); | |
14417 | if (buffer > buf_end) | |
14418 | { | |
14419 | overflow = true; | |
14420 | break; | |
14421 | } | |
14422 | range_end = (range_beginning | |
14423 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14424 | buffer += bytes_read; | |
14425 | break; | |
43988095 JK |
14426 | case DW_RLE_offset_pair: |
14427 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14428 | buffer += bytes_read; | |
14429 | if (buffer > buf_end) | |
14430 | { | |
14431 | overflow = true; | |
14432 | break; | |
14433 | } | |
14434 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14435 | buffer += bytes_read; | |
14436 | if (buffer > buf_end) | |
14437 | { | |
14438 | overflow = true; | |
14439 | break; | |
14440 | } | |
14441 | break; | |
14442 | case DW_RLE_start_end: | |
14443 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14444 | { | |
14445 | overflow = true; | |
14446 | break; | |
14447 | } | |
c8a7a66f TT |
14448 | range_beginning = cu->header.read_address (obfd, buffer, |
14449 | &bytes_read); | |
43988095 | 14450 | buffer += bytes_read; |
c8a7a66f | 14451 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14452 | buffer += bytes_read; |
14453 | break; | |
d0ce17d8 | 14454 | case DW_RLE_startx_endx: |
dda83cd7 SM |
14455 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14456 | buffer += bytes_read; | |
14457 | range_beginning = read_addr_index (cu, addr_index); | |
14458 | if (buffer > buf_end) | |
14459 | { | |
14460 | overflow = true; | |
14461 | break; | |
14462 | } | |
14463 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14464 | buffer += bytes_read; | |
14465 | range_end = read_addr_index (cu, addr_index); | |
14466 | break; | |
43988095 | 14467 | default: |
b98664d3 | 14468 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14469 | return false; |
14470 | } | |
14471 | if (rlet == DW_RLE_end_of_list || overflow) | |
14472 | break; | |
14473 | if (rlet == DW_RLE_base_address) | |
14474 | continue; | |
14475 | ||
43988095 JK |
14476 | if (range_beginning > range_end) |
14477 | { | |
14478 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14479 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14480 | return false; |
14481 | } | |
14482 | ||
14483 | /* Empty range entries have no effect. */ | |
14484 | if (range_beginning == range_end) | |
14485 | continue; | |
14486 | ||
d0ce17d8 CT |
14487 | /* Only DW_RLE_offset_pair needs the base address added. */ |
14488 | if (rlet == DW_RLE_offset_pair) | |
14489 | { | |
14490 | if (!base.has_value ()) | |
14491 | { | |
14492 | /* We have no valid base address for the DW_RLE_offset_pair. */ | |
14493 | complaint (_("Invalid .debug_rnglists data (no base address for " | |
14494 | "DW_RLE_offset_pair)")); | |
14495 | return false; | |
14496 | } | |
14497 | ||
14498 | range_beginning += *base; | |
14499 | range_end += *base; | |
14500 | } | |
43988095 JK |
14501 | |
14502 | /* A not-uncommon case of bad debug info. | |
14503 | Don't pollute the addrmap with bad data. */ | |
14504 | if (range_beginning + baseaddr == 0 | |
976ca316 | 14505 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 14506 | { |
b98664d3 | 14507 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14508 | " [in module %s]"), objfile_name (objfile)); |
14509 | continue; | |
14510 | } | |
14511 | ||
14512 | callback (range_beginning, range_end); | |
14513 | } | |
14514 | ||
14515 | if (overflow) | |
14516 | { | |
b98664d3 | 14517 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14518 | "for DW_AT_ranges attribute"), |
14519 | offset); | |
14520 | return false; | |
14521 | } | |
14522 | ||
14523 | return true; | |
14524 | } | |
14525 | ||
14526 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14527 | Callback's type should be: | |
14528 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14529 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14530 | |
43988095 | 14531 | template <typename Callback> |
43039443 | 14532 | static int |
d0ce17d8 | 14533 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag, |
43988095 | 14534 | Callback &&callback) |
43039443 | 14535 | { |
5e22e966 SM |
14536 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14537 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
14538 | struct comp_unit_head *cu_header = &cu->header; |
14539 | bfd *obfd = objfile->obfd; | |
14540 | unsigned int addr_size = cu_header->addr_size; | |
14541 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14542 | /* Base address selection entry. */ | |
2b24b6e4 | 14543 | gdb::optional<CORE_ADDR> base; |
43039443 | 14544 | unsigned int dummy; |
d521ce57 | 14545 | const gdb_byte *buffer; |
ff013f42 | 14546 | CORE_ADDR baseaddr; |
43039443 | 14547 | |
43988095 | 14548 | if (cu_header->version >= 5) |
d0ce17d8 | 14549 | return dwarf2_rnglists_process (offset, cu, tag, callback); |
43988095 | 14550 | |
d00adf39 | 14551 | base = cu->base_address; |
43039443 | 14552 | |
5e22e966 SM |
14553 | per_objfile->per_bfd->ranges.read (objfile); |
14554 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 14555 | { |
b98664d3 | 14556 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14557 | offset); |
14558 | return 0; | |
14559 | } | |
5e22e966 | 14560 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 14561 | |
b3b3bada | 14562 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14563 | |
43039443 JK |
14564 | while (1) |
14565 | { | |
14566 | CORE_ADDR range_beginning, range_end; | |
14567 | ||
c8a7a66f | 14568 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 14569 | buffer += addr_size; |
c8a7a66f | 14570 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
14571 | buffer += addr_size; |
14572 | offset += 2 * addr_size; | |
14573 | ||
14574 | /* An end of list marker is a pair of zero addresses. */ | |
14575 | if (range_beginning == 0 && range_end == 0) | |
14576 | /* Found the end of list entry. */ | |
14577 | break; | |
14578 | ||
14579 | /* Each base address selection entry is a pair of 2 values. | |
14580 | The first is the largest possible address, the second is | |
14581 | the base address. Check for a base address here. */ | |
14582 | if ((range_beginning & mask) == mask) | |
14583 | { | |
28d2bfb9 AB |
14584 | /* If we found the largest possible address, then we already |
14585 | have the base address in range_end. */ | |
14586 | base = range_end; | |
43039443 JK |
14587 | continue; |
14588 | } | |
14589 | ||
2b24b6e4 | 14590 | if (!base.has_value ()) |
43039443 JK |
14591 | { |
14592 | /* We have no valid base address for the ranges | |
14593 | data. */ | |
b98664d3 | 14594 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14595 | return 0; |
14596 | } | |
14597 | ||
9277c30c UW |
14598 | if (range_beginning > range_end) |
14599 | { | |
14600 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14601 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14602 | return 0; |
14603 | } | |
14604 | ||
14605 | /* Empty range entries have no effect. */ | |
14606 | if (range_beginning == range_end) | |
14607 | continue; | |
14608 | ||
2b24b6e4 TT |
14609 | range_beginning += *base; |
14610 | range_end += *base; | |
43039443 | 14611 | |
01093045 DE |
14612 | /* A not-uncommon case of bad debug info. |
14613 | Don't pollute the addrmap with bad data. */ | |
14614 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14615 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14616 | { |
b98664d3 | 14617 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14618 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14619 | continue; |
14620 | } | |
14621 | ||
5f46c5a5 JK |
14622 | callback (range_beginning, range_end); |
14623 | } | |
14624 | ||
14625 | return 1; | |
14626 | } | |
14627 | ||
14628 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14629 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14630 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14631 | ||
14632 | static int | |
14633 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14634 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
d0ce17d8 | 14635 | dwarf2_psymtab *ranges_pst, dwarf_tag tag) |
5f46c5a5 | 14636 | { |
5e22e966 | 14637 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14638 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14639 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14640 | int low_set = 0; |
14641 | CORE_ADDR low = 0; | |
14642 | CORE_ADDR high = 0; | |
14643 | int retval; | |
14644 | ||
d0ce17d8 | 14645 | retval = dwarf2_ranges_process (offset, cu, tag, |
5f46c5a5 JK |
14646 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) |
14647 | { | |
9277c30c | 14648 | if (ranges_pst != NULL) |
3e29f34a MR |
14649 | { |
14650 | CORE_ADDR lowpc; | |
14651 | CORE_ADDR highpc; | |
14652 | ||
79748972 TT |
14653 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14654 | range_beginning + baseaddr) | |
14655 | - baseaddr); | |
14656 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14657 | range_end + baseaddr) | |
14658 | - baseaddr); | |
d320c2b5 TT |
14659 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14660 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14661 | } |
ff013f42 | 14662 | |
43039443 JK |
14663 | /* FIXME: This is recording everything as a low-high |
14664 | segment of consecutive addresses. We should have a | |
14665 | data structure for discontiguous block ranges | |
14666 | instead. */ | |
14667 | if (! low_set) | |
14668 | { | |
14669 | low = range_beginning; | |
14670 | high = range_end; | |
14671 | low_set = 1; | |
14672 | } | |
14673 | else | |
14674 | { | |
14675 | if (range_beginning < low) | |
14676 | low = range_beginning; | |
14677 | if (range_end > high) | |
14678 | high = range_end; | |
14679 | } | |
5f46c5a5 JK |
14680 | }); |
14681 | if (!retval) | |
14682 | return 0; | |
43039443 JK |
14683 | |
14684 | if (! low_set) | |
14685 | /* If the first entry is an end-of-list marker, the range | |
14686 | describes an empty scope, i.e. no instructions. */ | |
14687 | return 0; | |
14688 | ||
14689 | if (low_return) | |
14690 | *low_return = low; | |
14691 | if (high_return) | |
14692 | *high_return = high; | |
14693 | return 1; | |
14694 | } | |
14695 | ||
3a2b436a JK |
14696 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14697 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14698 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14699 | |
3a2b436a | 14700 | static enum pc_bounds_kind |
af34e669 | 14701 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14702 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14703 | dwarf2_psymtab *pst) |
c906108c | 14704 | { |
976ca316 | 14705 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14706 | struct attribute *attr; |
91da1414 | 14707 | struct attribute *attr_high; |
af34e669 DJ |
14708 | CORE_ADDR low = 0; |
14709 | CORE_ADDR high = 0; | |
e385593e | 14710 | enum pc_bounds_kind ret; |
c906108c | 14711 | |
91da1414 MW |
14712 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14713 | if (attr_high) | |
af34e669 | 14714 | { |
e142c38c | 14715 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14716 | if (attr != nullptr) |
dda83cd7 | 14717 | { |
95f982e5 TT |
14718 | low = attr->as_address (); |
14719 | high = attr_high->as_address (); | |
cd6c91b4 | 14720 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14721 | high += low; |
91da1414 | 14722 | } |
af34e669 DJ |
14723 | else |
14724 | /* Found high w/o low attribute. */ | |
e385593e | 14725 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14726 | |
14727 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14728 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14729 | } |
c906108c | 14730 | else |
af34e669 | 14731 | { |
e142c38c | 14732 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
529908cb | 14733 | if (attr != nullptr && attr->form_is_unsigned ()) |
af34e669 | 14734 | { |
2b0c7f41 SM |
14735 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14736 | on DWARF version). */ | |
14737 | ULONGEST ranges_offset = attr->as_unsigned (); | |
14738 | ||
14739 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
14740 | this value. */ | |
14741 | if (die->tag != DW_TAG_compile_unit) | |
14742 | ranges_offset += cu->gnu_ranges_base; | |
2e3cf129 | 14743 | |
af34e669 | 14744 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14745 | .debug_ranges section. */ |
d0ce17d8 CT |
14746 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst, |
14747 | die->tag)) | |
e385593e | 14748 | return PC_BOUNDS_INVALID; |
43039443 | 14749 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14750 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14751 | } |
e385593e JK |
14752 | else |
14753 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14754 | } |
c906108c | 14755 | |
48fbe735 | 14756 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14757 | if (high <= low) |
e385593e | 14758 | return PC_BOUNDS_INVALID; |
c906108c SS |
14759 | |
14760 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14761 | eliminate duplicate copies of functions and vtables and such. | |
14762 | The linker will arbitrarily choose one and discard the others. | |
14763 | The AT_*_pc values for such functions refer to local labels in | |
14764 | these sections. If the section from that file was discarded, the | |
14765 | labels are not in the output, so the relocs get a value of 0. | |
14766 | If this is a discarded function, mark the pc bounds as invalid, | |
14767 | so that GDB will ignore it. */ | |
976ca316 | 14768 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14769 | return PC_BOUNDS_INVALID; |
c906108c SS |
14770 | |
14771 | *lowpc = low; | |
96408a79 SA |
14772 | if (highpc) |
14773 | *highpc = high; | |
af34e669 | 14774 | return ret; |
c906108c SS |
14775 | } |
14776 | ||
b084d499 JB |
14777 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14778 | its low and high PC addresses. Do nothing if these addresses could not | |
14779 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14780 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14781 | ||
14782 | static void | |
14783 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
dda83cd7 SM |
14784 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
14785 | struct dwarf2_cu *cu) | |
b084d499 JB |
14786 | { |
14787 | CORE_ADDR low, high; | |
14788 | struct die_info *child = die->child; | |
14789 | ||
e385593e | 14790 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14791 | { |
325fac50 PA |
14792 | *lowpc = std::min (*lowpc, low); |
14793 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14794 | } |
14795 | ||
14796 | /* If the language does not allow nested subprograms (either inside | |
14797 | subprograms or lexical blocks), we're done. */ | |
14798 | if (cu->language != language_ada) | |
14799 | return; | |
6e70227d | 14800 | |
b084d499 JB |
14801 | /* Check all the children of the given DIE. If it contains nested |
14802 | subprograms, then check their pc bounds. Likewise, we need to | |
14803 | check lexical blocks as well, as they may also contain subprogram | |
14804 | definitions. */ | |
14805 | while (child && child->tag) | |
14806 | { | |
14807 | if (child->tag == DW_TAG_subprogram | |
dda83cd7 SM |
14808 | || child->tag == DW_TAG_lexical_block) |
14809 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14810 | child = child->sibling; |
b084d499 JB |
14811 | } |
14812 | } | |
14813 | ||
fae299cd DC |
14814 | /* Get the low and high pc's represented by the scope DIE, and store |
14815 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14816 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14817 | ||
14818 | static void | |
14819 | get_scope_pc_bounds (struct die_info *die, | |
14820 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14821 | struct dwarf2_cu *cu) | |
14822 | { | |
14823 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14824 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14825 | CORE_ADDR current_low, current_high; | |
14826 | ||
3a2b436a | 14827 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14828 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14829 | { |
14830 | best_low = current_low; | |
14831 | best_high = current_high; | |
14832 | } | |
14833 | else | |
14834 | { | |
14835 | struct die_info *child = die->child; | |
14836 | ||
14837 | while (child && child->tag) | |
14838 | { | |
14839 | switch (child->tag) { | |
14840 | case DW_TAG_subprogram: | |
dda83cd7 | 14841 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14842 | break; |
14843 | case DW_TAG_namespace: | |
f55ee35c | 14844 | case DW_TAG_module: |
fae299cd DC |
14845 | /* FIXME: carlton/2004-01-16: Should we do this for |
14846 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14847 | that current GCC's always emit the DIEs corresponding | |
14848 | to definitions of methods of classes as children of a | |
14849 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14850 | the DIEs giving the declarations, which could be | |
14851 | anywhere). But I don't see any reason why the | |
14852 | standards says that they have to be there. */ | |
14853 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14854 | ||
14855 | if (current_low != ((CORE_ADDR) -1)) | |
14856 | { | |
325fac50 PA |
14857 | best_low = std::min (best_low, current_low); |
14858 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14859 | } |
14860 | break; | |
14861 | default: | |
0963b4bd | 14862 | /* Ignore. */ |
fae299cd DC |
14863 | break; |
14864 | } | |
14865 | ||
436c571c | 14866 | child = child->sibling; |
fae299cd DC |
14867 | } |
14868 | } | |
14869 | ||
14870 | *lowpc = best_low; | |
14871 | *highpc = best_high; | |
14872 | } | |
14873 | ||
801e3a5b JB |
14874 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14875 | in DIE. */ | |
380bca97 | 14876 | |
801e3a5b JB |
14877 | static void |
14878 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
dda83cd7 | 14879 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) |
801e3a5b | 14880 | { |
5e22e966 | 14881 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14882 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14883 | struct attribute *attr; |
91da1414 | 14884 | struct attribute *attr_high; |
801e3a5b | 14885 | |
91da1414 MW |
14886 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14887 | if (attr_high) | |
801e3a5b | 14888 | { |
801e3a5b | 14889 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14890 | if (attr != nullptr) |
dda83cd7 | 14891 | { |
95f982e5 TT |
14892 | CORE_ADDR low = attr->as_address (); |
14893 | CORE_ADDR high = attr_high->as_address (); | |
31aa7e4e | 14894 | |
cd6c91b4 | 14895 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14896 | high += low; |
9a619af0 | 14897 | |
3e29f34a MR |
14898 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14899 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14900 | cu->get_builder ()->record_block_range (block, low, high - 1); |
dda83cd7 | 14901 | } |
801e3a5b JB |
14902 | } |
14903 | ||
14904 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
529908cb | 14905 | if (attr != nullptr && attr->form_is_unsigned ()) |
801e3a5b | 14906 | { |
2b0c7f41 SM |
14907 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14908 | on DWARF version). */ | |
14909 | ULONGEST ranges_offset = attr->as_unsigned (); | |
801e3a5b | 14910 | |
2b0c7f41 SM |
14911 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add |
14912 | this value. */ | |
14913 | if (die->tag != DW_TAG_compile_unit) | |
14914 | ranges_offset += cu->gnu_ranges_base; | |
801e3a5b | 14915 | |
2d5f09ec | 14916 | std::vector<blockrange> blockvec; |
2b0c7f41 | 14917 | dwarf2_ranges_process (ranges_offset, cu, die->tag, |
5f46c5a5 JK |
14918 | [&] (CORE_ADDR start, CORE_ADDR end) |
14919 | { | |
58fdfd2c JK |
14920 | start += baseaddr; |
14921 | end += baseaddr; | |
5f46c5a5 JK |
14922 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14923 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14924 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14925 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14926 | }); |
2d5f09ec KB |
14927 | |
14928 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14929 | } |
14930 | } | |
14931 | ||
685b1105 JK |
14932 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14933 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14934 | |
685b1105 JK |
14935 | static void |
14936 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14937 | { |
38360086 | 14938 | int major, minor; |
60d5a603 JK |
14939 | |
14940 | if (cu->producer == NULL) | |
14941 | { | |
14942 | /* For unknown compilers expect their behavior is DWARF version | |
14943 | compliant. | |
14944 | ||
14945 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14946 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14947 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14948 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14949 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14950 | } |
b1ffba5a | 14951 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14952 | { |
38360086 MW |
14953 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14954 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14955 | } |
5230b05a | 14956 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14957 | { |
14958 | cu->producer_is_icc = true; | |
14959 | cu->producer_is_icc_lt_14 = major < 14; | |
14960 | } | |
c258c396 JD |
14961 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14962 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14963 | else |
14964 | { | |
14965 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14966 | compliant. */ | |
60d5a603 JK |
14967 | } |
14968 | ||
9068261f | 14969 | cu->checked_producer = true; |
685b1105 | 14970 | } |
ba919b58 | 14971 | |
685b1105 JK |
14972 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14973 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14974 | during 4.6.0 experimental. */ | |
14975 | ||
9068261f | 14976 | static bool |
685b1105 JK |
14977 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14978 | { | |
14979 | if (!cu->checked_producer) | |
14980 | check_producer (cu); | |
14981 | ||
14982 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14983 | } |
14984 | ||
c258c396 JD |
14985 | |
14986 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14987 | with incorrect is_stmt attributes. */ | |
14988 | ||
14989 | static bool | |
14990 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14991 | { | |
14992 | if (!cu->checked_producer) | |
14993 | check_producer (cu); | |
14994 | ||
14995 | return cu->producer_is_codewarrior; | |
14996 | } | |
14997 | ||
bf23a268 TT |
14998 | /* Return the accessibility of DIE, as given by DW_AT_accessibility. |
14999 | If that attribute is not available, return the appropriate | |
15000 | default. */ | |
60d5a603 JK |
15001 | |
15002 | static enum dwarf_access_attribute | |
bf23a268 | 15003 | dwarf2_access_attribute (struct die_info *die, struct dwarf2_cu *cu) |
60d5a603 | 15004 | { |
bf23a268 TT |
15005 | attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
15006 | if (attr != nullptr) | |
15007 | { | |
15008 | LONGEST value = attr->constant_value (-1); | |
15009 | if (value == DW_ACCESS_public | |
15010 | || value == DW_ACCESS_protected | |
15011 | || value == DW_ACCESS_private) | |
15012 | return (dwarf_access_attribute) value; | |
15013 | complaint (_("Unhandled DW_AT_accessibility value (%s)"), | |
15014 | plongest (value)); | |
15015 | } | |
15016 | ||
60d5a603 JK |
15017 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) |
15018 | { | |
15019 | /* The default DWARF 2 accessibility for members is public, the default | |
15020 | accessibility for inheritance is private. */ | |
15021 | ||
15022 | if (die->tag != DW_TAG_inheritance) | |
15023 | return DW_ACCESS_public; | |
15024 | else | |
15025 | return DW_ACCESS_private; | |
15026 | } | |
15027 | else | |
15028 | { | |
15029 | /* DWARF 3+ defines the default accessibility a different way. The same | |
15030 | rules apply now for DW_TAG_inheritance as for the members and it only | |
15031 | depends on the container kind. */ | |
15032 | ||
15033 | if (die->parent->tag == DW_TAG_class_type) | |
15034 | return DW_ACCESS_private; | |
15035 | else | |
15036 | return DW_ACCESS_public; | |
15037 | } | |
15038 | } | |
15039 | ||
74ac6d43 TT |
15040 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
15041 | offset. If the attribute was not found return 0, otherwise return | |
15042 | 1. If it was found but could not properly be handled, set *OFFSET | |
15043 | to 0. */ | |
15044 | ||
15045 | static int | |
15046 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
15047 | LONGEST *offset) | |
15048 | { | |
15049 | struct attribute *attr; | |
15050 | ||
15051 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
15052 | if (attr != NULL) | |
15053 | { | |
15054 | *offset = 0; | |
15055 | ||
15056 | /* Note that we do not check for a section offset first here. | |
15057 | This is because DW_AT_data_member_location is new in DWARF 4, | |
15058 | so if we see it, we can assume that a constant form is really | |
15059 | a constant and not a section offset. */ | |
cd6c91b4 | 15060 | if (attr->form_is_constant ()) |
0826b30a | 15061 | *offset = attr->constant_value (0); |
cd6c91b4 | 15062 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 15063 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 15064 | else if (attr->form_is_block ()) |
9d2246fc | 15065 | *offset = decode_locdesc (attr->as_block (), cu); |
74ac6d43 TT |
15066 | else |
15067 | dwarf2_complex_location_expr_complaint (); | |
15068 | ||
15069 | return 1; | |
15070 | } | |
15071 | ||
15072 | return 0; | |
15073 | } | |
15074 | ||
7d79de9a TT |
15075 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
15076 | ||
15077 | static void | |
15078 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
15079 | struct field *field) | |
15080 | { | |
15081 | struct attribute *attr; | |
15082 | ||
15083 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
15084 | if (attr != NULL) | |
15085 | { | |
15086 | if (attr->form_is_constant ()) | |
15087 | { | |
15088 | LONGEST offset = attr->constant_value (0); | |
15089 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
15090 | } | |
15091 | else if (attr->form_is_section_offset ()) | |
15092 | dwarf2_complex_location_expr_complaint (); | |
15093 | else if (attr->form_is_block ()) | |
15094 | { | |
15095 | bool handled; | |
9d2246fc | 15096 | CORE_ADDR offset = decode_locdesc (attr->as_block (), cu, &handled); |
7d79de9a TT |
15097 | if (handled) |
15098 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
15099 | else | |
15100 | { | |
5e22e966 SM |
15101 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
15102 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
15103 | struct dwarf2_locexpr_baton *dlbaton |
15104 | = XOBNEW (&objfile->objfile_obstack, | |
15105 | struct dwarf2_locexpr_baton); | |
9d2246fc TT |
15106 | dlbaton->data = attr->as_block ()->data; |
15107 | dlbaton->size = attr->as_block ()->size; | |
7d79de9a TT |
15108 | /* When using this baton, we want to compute the address |
15109 | of the field, not the value. This is why | |
15110 | is_reference is set to false here. */ | |
15111 | dlbaton->is_reference = false; | |
5e22e966 | 15112 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
15113 | dlbaton->per_cu = cu->per_cu; |
15114 | ||
15115 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
15116 | } | |
15117 | } | |
15118 | else | |
15119 | dwarf2_complex_location_expr_complaint (); | |
15120 | } | |
15121 | } | |
15122 | ||
c906108c SS |
15123 | /* Add an aggregate field to the field list. */ |
15124 | ||
15125 | static void | |
107d2387 | 15126 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15127 | struct dwarf2_cu *cu) |
6e70227d | 15128 | { |
5e22e966 | 15129 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 15130 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
15131 | struct nextfield *new_field; |
15132 | struct attribute *attr; | |
15133 | struct field *fp; | |
15d034d0 | 15134 | const char *fieldname = ""; |
c906108c | 15135 | |
7d0ccb61 DJ |
15136 | if (die->tag == DW_TAG_inheritance) |
15137 | { | |
be2daae6 TT |
15138 | fip->baseclasses.emplace_back (); |
15139 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15140 | } |
15141 | else | |
15142 | { | |
be2daae6 TT |
15143 | fip->fields.emplace_back (); |
15144 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15145 | } |
be2daae6 | 15146 | |
9c6a1327 TT |
15147 | new_field->offset = die->sect_off; |
15148 | ||
bf23a268 | 15149 | new_field->accessibility = dwarf2_access_attribute (die, cu); |
c906108c | 15150 | if (new_field->accessibility != DW_ACCESS_public) |
264fc0e2 | 15151 | fip->non_public_fields = true; |
60d5a603 | 15152 | |
e142c38c | 15153 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 15154 | if (attr != nullptr) |
23dca5c3 | 15155 | new_field->virtuality = attr->as_virtuality (); |
60d5a603 JK |
15156 | else |
15157 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15158 | |
15159 | fp = &new_field->field; | |
a9a9bd0f | 15160 | |
e142c38c | 15161 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15162 | { |
a9a9bd0f | 15163 | /* Data member other than a C++ static data member. */ |
6e70227d | 15164 | |
c906108c | 15165 | /* Get type of field. */ |
5d14b6e5 | 15166 | fp->set_type (die_type (die, cu)); |
c906108c | 15167 | |
d6a843b5 | 15168 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15169 | |
c906108c | 15170 | /* Get bit size of field (zero if none). */ |
e142c38c | 15171 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 15172 | if (attr != nullptr) |
c906108c | 15173 | { |
529908cb | 15174 | FIELD_BITSIZE (*fp) = attr->constant_value (0); |
c906108c SS |
15175 | } |
15176 | else | |
15177 | { | |
15178 | FIELD_BITSIZE (*fp) = 0; | |
15179 | } | |
15180 | ||
15181 | /* Get bit offset of field. */ | |
7d79de9a | 15182 | handle_data_member_location (die, cu, fp); |
e142c38c | 15183 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
7c184d33 | 15184 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c | 15185 | { |
d5a22e77 | 15186 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
15187 | { |
15188 | /* For big endian bits, the DW_AT_bit_offset gives the | |
dda83cd7 SM |
15189 | additional bit offset from the MSB of the containing |
15190 | anonymous object to the MSB of the field. We don't | |
15191 | have to do anything special since we don't need to | |
15192 | know the size of the anonymous object. */ | |
529908cb | 15193 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) |
7c184d33 | 15194 | + attr->constant_value (0))); |
c906108c SS |
15195 | } |
15196 | else | |
15197 | { | |
15198 | /* For little endian bits, compute the bit offset to the | |
dda83cd7 SM |
15199 | MSB of the anonymous object, subtract off the number of |
15200 | bits from the MSB of the field to the MSB of the | |
15201 | object, and then subtract off the number of bits of | |
15202 | the field itself. The result is the bit offset of | |
15203 | the LSB of the field. */ | |
c906108c | 15204 | int anonymous_size; |
7c184d33 | 15205 | int bit_offset = attr->constant_value (0); |
c906108c | 15206 | |
e142c38c | 15207 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
7c184d33 | 15208 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c SS |
15209 | { |
15210 | /* The size of the anonymous object containing | |
15211 | the bit field is explicit, so use the | |
15212 | indicated size (in bytes). */ | |
7c184d33 | 15213 | anonymous_size = attr->constant_value (0); |
c906108c SS |
15214 | } |
15215 | else | |
15216 | { | |
15217 | /* The size of the anonymous object containing | |
15218 | the bit field must be inferred from the type | |
15219 | attribute of the data member containing the | |
15220 | bit field. */ | |
5d14b6e5 | 15221 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 15222 | } |
f41f5e61 PA |
15223 | SET_FIELD_BITPOS (*fp, |
15224 | (FIELD_BITPOS (*fp) | |
15225 | + anonymous_size * bits_per_byte | |
15226 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15227 | } |
15228 | } | |
da5b30da AA |
15229 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15230 | if (attr != NULL) | |
15231 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 15232 | + attr->constant_value (0))); |
c906108c SS |
15233 | |
15234 | /* Get name of field. */ | |
39cbfefa DJ |
15235 | fieldname = dwarf2_name (die, cu); |
15236 | if (fieldname == NULL) | |
15237 | fieldname = ""; | |
d8151005 DJ |
15238 | |
15239 | /* The name is already allocated along with this objfile, so we don't | |
15240 | need to duplicate it for the type. */ | |
15241 | fp->name = fieldname; | |
c906108c SS |
15242 | |
15243 | /* Change accessibility for artificial fields (e.g. virtual table | |
dda83cd7 | 15244 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15245 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15246 | { |
d48cc9dd | 15247 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c | 15248 | new_field->accessibility = DW_ACCESS_private; |
264fc0e2 | 15249 | fip->non_public_fields = true; |
c906108c SS |
15250 | } |
15251 | } | |
a9a9bd0f | 15252 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15253 | { |
a9a9bd0f DC |
15254 | /* C++ static member. */ |
15255 | ||
15256 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15257 | is a declaration, but all versions of G++ as of this writing | |
15258 | (so through at least 3.2.1) incorrectly generate | |
15259 | DW_TAG_variable tags. */ | |
6e70227d | 15260 | |
ff355380 | 15261 | const char *physname; |
c906108c | 15262 | |
a9a9bd0f | 15263 | /* Get name of field. */ |
39cbfefa DJ |
15264 | fieldname = dwarf2_name (die, cu); |
15265 | if (fieldname == NULL) | |
c906108c SS |
15266 | return; |
15267 | ||
254e6b9e | 15268 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15269 | if (attr |
15270 | /* Only create a symbol if this is an external value. | |
15271 | new_symbol checks this and puts the value in the global symbol | |
15272 | table, which we want. If it is not external, new_symbol | |
15273 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15274 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15275 | { |
15276 | /* A static const member, not much different than an enum as far as | |
15277 | we're concerned, except that we can support more types. */ | |
15278 | new_symbol (die, NULL, cu); | |
15279 | } | |
15280 | ||
2df3850c | 15281 | /* Get physical name. */ |
ff355380 | 15282 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15283 | |
d8151005 DJ |
15284 | /* The name is already allocated along with this objfile, so we don't |
15285 | need to duplicate it for the type. */ | |
15286 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 15287 | fp->set_type (die_type (die, cu)); |
d8151005 | 15288 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15289 | } |
15290 | else if (die->tag == DW_TAG_inheritance) | |
15291 | { | |
74ac6d43 | 15292 | /* C++ base class field. */ |
7d79de9a | 15293 | handle_data_member_location (die, cu, fp); |
c906108c | 15294 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
15295 | fp->set_type (die_type (die, cu)); |
15296 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 15297 | } |
2ddeaf8a TT |
15298 | else |
15299 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15300 | } |
15301 | ||
883fd55a KS |
15302 | /* Can the type given by DIE define another type? */ |
15303 | ||
15304 | static bool | |
15305 | type_can_define_types (const struct die_info *die) | |
15306 | { | |
15307 | switch (die->tag) | |
15308 | { | |
15309 | case DW_TAG_typedef: | |
15310 | case DW_TAG_class_type: | |
15311 | case DW_TAG_structure_type: | |
15312 | case DW_TAG_union_type: | |
15313 | case DW_TAG_enumeration_type: | |
15314 | return true; | |
15315 | ||
15316 | default: | |
15317 | return false; | |
15318 | } | |
15319 | } | |
15320 | ||
15321 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15322 | |
15323 | static void | |
883fd55a KS |
15324 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15325 | struct dwarf2_cu *cu) | |
6e70227d | 15326 | { |
be2daae6 TT |
15327 | struct decl_field fp; |
15328 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15329 | |
883fd55a | 15330 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15331 | |
883fd55a | 15332 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15333 | fp.name = dwarf2_name (die, cu); |
15334 | fp.type = read_type_die (die, cu); | |
98751a41 | 15335 | |
c191a687 | 15336 | /* Save accessibility. */ |
bf23a268 | 15337 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
c191a687 KS |
15338 | switch (accessibility) |
15339 | { | |
15340 | case DW_ACCESS_public: | |
15341 | /* The assumed value if neither private nor protected. */ | |
15342 | break; | |
15343 | case DW_ACCESS_private: | |
be2daae6 | 15344 | fp.is_private = 1; |
c191a687 KS |
15345 | break; |
15346 | case DW_ACCESS_protected: | |
be2daae6 | 15347 | fp.is_protected = 1; |
c191a687 | 15348 | break; |
c191a687 KS |
15349 | } |
15350 | ||
883fd55a | 15351 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15352 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15353 | else |
be2daae6 | 15354 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15355 | } |
15356 | ||
9c6a1327 TT |
15357 | /* A convenience typedef that's used when finding the discriminant |
15358 | field for a variant part. */ | |
1b95cdb7 SM |
15359 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
15360 | offset_map_type; | |
9c6a1327 TT |
15361 | |
15362 | /* Compute the discriminant range for a given variant. OBSTACK is | |
15363 | where the results will be stored. VARIANT is the variant to | |
15364 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
15365 | or unsigned. */ | |
15366 | ||
15367 | static const gdb::array_view<discriminant_range> | |
15368 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
15369 | bool is_unsigned) | |
15370 | { | |
15371 | std::vector<discriminant_range> ranges; | |
15372 | ||
15373 | if (variant.default_branch) | |
15374 | return {}; | |
15375 | ||
15376 | if (variant.discr_list_data == nullptr) | |
15377 | { | |
15378 | discriminant_range r | |
15379 | = {variant.discriminant_value, variant.discriminant_value}; | |
15380 | ranges.push_back (r); | |
15381 | } | |
15382 | else | |
15383 | { | |
15384 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
15385 | variant.discr_list_data->size); | |
15386 | while (!data.empty ()) | |
15387 | { | |
15388 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
15389 | { | |
15390 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
15391 | break; | |
15392 | } | |
15393 | bool is_range = data[0] == DW_DSC_range; | |
15394 | data = data.slice (1); | |
15395 | ||
15396 | ULONGEST low, high; | |
15397 | unsigned int bytes_read; | |
15398 | ||
15399 | if (data.empty ()) | |
15400 | { | |
15401 | complaint (_("DW_AT_discr_list missing low value")); | |
15402 | break; | |
15403 | } | |
15404 | if (is_unsigned) | |
15405 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
15406 | else | |
15407 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
15408 | &bytes_read); | |
15409 | data = data.slice (bytes_read); | |
15410 | ||
15411 | if (is_range) | |
15412 | { | |
15413 | if (data.empty ()) | |
15414 | { | |
15415 | complaint (_("DW_AT_discr_list missing high value")); | |
15416 | break; | |
15417 | } | |
15418 | if (is_unsigned) | |
15419 | high = read_unsigned_leb128 (nullptr, data.data (), | |
15420 | &bytes_read); | |
15421 | else | |
15422 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
15423 | &bytes_read); | |
15424 | data = data.slice (bytes_read); | |
15425 | } | |
15426 | else | |
15427 | high = low; | |
15428 | ||
15429 | ranges.push_back ({ low, high }); | |
15430 | } | |
15431 | } | |
15432 | ||
15433 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
15434 | ranges.size ()); | |
15435 | std::copy (ranges.begin (), ranges.end (), result); | |
15436 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
15437 | } | |
15438 | ||
15439 | static const gdb::array_view<variant_part> create_variant_parts | |
15440 | (struct obstack *obstack, | |
15441 | const offset_map_type &offset_map, | |
15442 | struct field_info *fi, | |
15443 | const std::vector<variant_part_builder> &variant_parts); | |
15444 | ||
15445 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
15446 | the variant to fill in. OBSTACK is where any needed allocations | |
15447 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
15448 | fields for the type. FI describes the fields of the type we're | |
15449 | processing. FIELD is the variant field we're converting. */ | |
15450 | ||
15451 | static void | |
15452 | create_one_variant (variant &result, struct obstack *obstack, | |
15453 | const offset_map_type &offset_map, | |
15454 | struct field_info *fi, const variant_field &field) | |
15455 | { | |
15456 | result.discriminants = convert_variant_range (obstack, field, false); | |
15457 | result.first_field = field.first_field + fi->baseclasses.size (); | |
15458 | result.last_field = field.last_field + fi->baseclasses.size (); | |
15459 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
15460 | field.variant_parts); | |
15461 | } | |
15462 | ||
15463 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
15464 | is the variant part to fill in. OBSTACK is where any needed | |
15465 | allocations will be done. OFFSET_MAP holds the mapping from | |
15466 | section offsets to fields for the type. FI describes the fields of | |
15467 | the type we're processing. BUILDER is the variant part to be | |
15468 | converted. */ | |
15469 | ||
15470 | static void | |
15471 | create_one_variant_part (variant_part &result, | |
15472 | struct obstack *obstack, | |
15473 | const offset_map_type &offset_map, | |
15474 | struct field_info *fi, | |
15475 | const variant_part_builder &builder) | |
15476 | { | |
15477 | auto iter = offset_map.find (builder.discriminant_offset); | |
15478 | if (iter == offset_map.end ()) | |
15479 | { | |
15480 | result.discriminant_index = -1; | |
15481 | /* Doesn't matter. */ | |
15482 | result.is_unsigned = false; | |
15483 | } | |
15484 | else | |
15485 | { | |
15486 | result.discriminant_index = iter->second; | |
15487 | result.is_unsigned | |
c6d940a9 | 15488 | = fi->fields[result.discriminant_index].field.type ()->is_unsigned (); |
9c6a1327 TT |
15489 | } |
15490 | ||
15491 | size_t n = builder.variants.size (); | |
15492 | variant *output = new (obstack) variant[n]; | |
15493 | for (size_t i = 0; i < n; ++i) | |
15494 | create_one_variant (output[i], obstack, offset_map, fi, | |
15495 | builder.variants[i]); | |
15496 | ||
15497 | result.variants = gdb::array_view<variant> (output, n); | |
15498 | } | |
15499 | ||
15500 | /* Create a vector of variant parts that can be attached to a type. | |
15501 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
15502 | holds the mapping from section offsets to fields for the type. FI | |
15503 | describes the fields of the type we're processing. VARIANT_PARTS | |
15504 | is the vector to convert. */ | |
15505 | ||
15506 | static const gdb::array_view<variant_part> | |
15507 | create_variant_parts (struct obstack *obstack, | |
15508 | const offset_map_type &offset_map, | |
15509 | struct field_info *fi, | |
15510 | const std::vector<variant_part_builder> &variant_parts) | |
15511 | { | |
15512 | if (variant_parts.empty ()) | |
15513 | return {}; | |
15514 | ||
15515 | size_t n = variant_parts.size (); | |
15516 | variant_part *result = new (obstack) variant_part[n]; | |
15517 | for (size_t i = 0; i < n; ++i) | |
15518 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
15519 | variant_parts[i]); | |
15520 | ||
15521 | return gdb::array_view<variant_part> (result, n); | |
15522 | } | |
15523 | ||
15524 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
15525 | done. */ | |
15526 | ||
15527 | static void | |
15528 | add_variant_property (struct field_info *fip, struct type *type, | |
15529 | struct dwarf2_cu *cu) | |
15530 | { | |
15531 | /* Map section offsets of fields to their field index. Note the | |
15532 | field index here does not take the number of baseclasses into | |
15533 | account. */ | |
15534 | offset_map_type offset_map; | |
15535 | for (int i = 0; i < fip->fields.size (); ++i) | |
15536 | offset_map[fip->fields[i].offset] = i; | |
15537 | ||
5e22e966 | 15538 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
15539 | gdb::array_view<variant_part> parts |
15540 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
15541 | fip->variant_parts); | |
15542 | ||
15543 | struct dynamic_prop prop; | |
8c2e4e06 SM |
15544 | prop.set_variant_parts ((gdb::array_view<variant_part> *) |
15545 | obstack_copy (&objfile->objfile_obstack, &parts, | |
15546 | sizeof (parts))); | |
9c6a1327 | 15547 | |
5c54719c | 15548 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
15549 | } |
15550 | ||
c906108c SS |
15551 | /* Create the vector of fields, and attach it to the type. */ |
15552 | ||
15553 | static void | |
fba45db2 | 15554 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15555 | struct dwarf2_cu *cu) |
c906108c | 15556 | { |
317f7127 | 15557 | int nfields = fip->nfields (); |
c906108c SS |
15558 | |
15559 | /* Record the field count, allocate space for the array of fields, | |
15560 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 15561 | type->set_num_fields (nfields); |
3cabb6b0 SM |
15562 | type->set_fields |
15563 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 15564 | |
b4ba55a1 | 15565 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15566 | { |
15567 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15568 | ||
15569 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15570 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15571 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15572 | ||
15573 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15574 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15575 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15576 | ||
774b6a14 TT |
15577 | TYPE_FIELD_IGNORE_BITS (type) = |
15578 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15579 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15580 | } |
15581 | ||
15582 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15583 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15584 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15585 | { |
be2daae6 | 15586 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15587 | unsigned char *pointer; |
c906108c SS |
15588 | |
15589 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15590 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15591 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15592 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15593 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15594 | } |
15595 | ||
9c6a1327 TT |
15596 | if (!fip->variant_parts.empty ()) |
15597 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15598 | |
be2daae6 TT |
15599 | /* Copy the saved-up fields into the field vector. */ |
15600 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15601 | { |
be2daae6 TT |
15602 | struct nextfield &field |
15603 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15604 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15605 | |
ceacbf6e | 15606 | type->field (i) = field.field; |
be2daae6 | 15607 | switch (field.accessibility) |
c906108c | 15608 | { |
c5aa993b | 15609 | case DW_ACCESS_private: |
b4ba55a1 | 15610 | if (cu->language != language_ada) |
be2daae6 | 15611 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15612 | break; |
c906108c | 15613 | |
c5aa993b | 15614 | case DW_ACCESS_protected: |
b4ba55a1 | 15615 | if (cu->language != language_ada) |
be2daae6 | 15616 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15617 | break; |
c906108c | 15618 | |
c5aa993b JM |
15619 | case DW_ACCESS_public: |
15620 | break; | |
c906108c | 15621 | |
c5aa993b JM |
15622 | default: |
15623 | /* Unknown accessibility. Complain and treat it as public. */ | |
15624 | { | |
b98664d3 | 15625 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15626 | field.accessibility); |
c5aa993b JM |
15627 | } |
15628 | break; | |
c906108c | 15629 | } |
be2daae6 | 15630 | if (i < fip->baseclasses.size ()) |
c906108c | 15631 | { |
be2daae6 | 15632 | switch (field.virtuality) |
c906108c | 15633 | { |
c5aa993b JM |
15634 | case DW_VIRTUALITY_virtual: |
15635 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15636 | if (cu->language == language_ada) |
a73c6dcd | 15637 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15638 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15639 | break; |
c906108c SS |
15640 | } |
15641 | } | |
c906108c SS |
15642 | } |
15643 | } | |
15644 | ||
7d27a96d TT |
15645 | /* Return true if this member function is a constructor, false |
15646 | otherwise. */ | |
15647 | ||
15648 | static int | |
15649 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15650 | { | |
15651 | const char *fieldname; | |
fe978cb0 | 15652 | const char *type_name; |
7d27a96d TT |
15653 | int len; |
15654 | ||
15655 | if (die->parent == NULL) | |
15656 | return 0; | |
15657 | ||
15658 | if (die->parent->tag != DW_TAG_structure_type | |
15659 | && die->parent->tag != DW_TAG_union_type | |
15660 | && die->parent->tag != DW_TAG_class_type) | |
15661 | return 0; | |
15662 | ||
15663 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15664 | type_name = dwarf2_name (die->parent, cu); |
15665 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15666 | return 0; |
15667 | ||
15668 | len = strlen (fieldname); | |
fe978cb0 PA |
15669 | return (strncmp (fieldname, type_name, len) == 0 |
15670 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15671 | } |
15672 | ||
c906108c SS |
15673 | /* Add a member function to the proper fieldlist. */ |
15674 | ||
15675 | static void | |
107d2387 | 15676 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15677 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15678 | { |
5e22e966 | 15679 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15680 | struct attribute *attr; |
c906108c | 15681 | int i; |
be2daae6 | 15682 | struct fnfieldlist *flp = nullptr; |
c906108c | 15683 | struct fn_field *fnp; |
15d034d0 | 15684 | const char *fieldname; |
f792889a | 15685 | struct type *this_type; |
c906108c | 15686 | |
b4ba55a1 | 15687 | if (cu->language == language_ada) |
a73c6dcd | 15688 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15689 | |
2df3850c | 15690 | /* Get name of member function. */ |
39cbfefa DJ |
15691 | fieldname = dwarf2_name (die, cu); |
15692 | if (fieldname == NULL) | |
2df3850c | 15693 | return; |
c906108c | 15694 | |
c906108c | 15695 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15696 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15697 | { |
27bfe10e | 15698 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15699 | { |
15700 | flp = &fip->fnfieldlists[i]; | |
15701 | break; | |
15702 | } | |
c906108c SS |
15703 | } |
15704 | ||
be2daae6 TT |
15705 | /* Create a new fnfieldlist if necessary. */ |
15706 | if (flp == nullptr) | |
c906108c | 15707 | { |
be2daae6 TT |
15708 | fip->fnfieldlists.emplace_back (); |
15709 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15710 | flp->name = fieldname; |
be2daae6 | 15711 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15712 | } |
15713 | ||
be2daae6 TT |
15714 | /* Create a new member function field and add it to the vector of |
15715 | fnfieldlists. */ | |
15716 | flp->fnfields.emplace_back (); | |
15717 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15718 | |
15719 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15720 | if (cu->language == language_cplus) |
be2daae6 TT |
15721 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15722 | die, cu); | |
3da10d80 KS |
15723 | else |
15724 | { | |
1d06ead6 | 15725 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15726 | fnp->physname = physname ? physname : ""; |
15727 | } | |
15728 | ||
c906108c | 15729 | fnp->type = alloc_type (objfile); |
f792889a | 15730 | this_type = read_type_die (die, cu); |
78134374 | 15731 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15732 | { |
1f704f76 | 15733 | int nparams = this_type->num_fields (); |
c906108c | 15734 | |
f792889a | 15735 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15736 | of the method itself (TYPE_CODE_METHOD). */ |
15737 | smash_to_method_type (fnp->type, type, | |
f792889a | 15738 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15739 | this_type->fields (), |
1f704f76 | 15740 | this_type->num_fields (), |
a409645d | 15741 | this_type->has_varargs ()); |
c906108c SS |
15742 | |
15743 | /* Handle static member functions. | |
dda83cd7 SM |
15744 | Dwarf2 has no clean way to discern C++ static and non-static |
15745 | member functions. G++ helps GDB by marking the first | |
15746 | parameter for non-static member functions (which is the this | |
15747 | pointer) as artificial. We obtain this information from | |
15748 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15749 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15750 | fnp->voffset = VOFFSET_STATIC; |
15751 | } | |
15752 | else | |
b98664d3 | 15753 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15754 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15755 | |
15756 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15757 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15758 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15759 | |
3e43a32a MS |
15760 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15761 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15762 | |
15763 | /* Get accessibility. */ | |
bf23a268 | 15764 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
60d5a603 | 15765 | switch (accessibility) |
c906108c | 15766 | { |
60d5a603 JK |
15767 | case DW_ACCESS_private: |
15768 | fnp->is_private = 1; | |
15769 | break; | |
15770 | case DW_ACCESS_protected: | |
15771 | fnp->is_protected = 1; | |
15772 | break; | |
c906108c SS |
15773 | } |
15774 | ||
b02dede2 | 15775 | /* Check for artificial methods. */ |
e142c38c | 15776 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
c45bc3f8 | 15777 | if (attr && attr->as_boolean ()) |
b02dede2 DJ |
15778 | fnp->is_artificial = 1; |
15779 | ||
e35000a7 TBA |
15780 | /* Check for defaulted methods. */ |
15781 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
e8e5c158 TT |
15782 | if (attr != nullptr) |
15783 | fnp->defaulted = attr->defaulted (); | |
e35000a7 TBA |
15784 | |
15785 | /* Check for deleted methods. */ | |
15786 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
c45bc3f8 | 15787 | if (attr != nullptr && attr->as_boolean ()) |
e35000a7 TBA |
15788 | fnp->is_deleted = 1; |
15789 | ||
7d27a96d TT |
15790 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15791 | ||
0d564a31 | 15792 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15793 | function. For older versions of GCC, this is an offset in the |
15794 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15795 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15796 | to the object address. */ |
15797 | ||
e142c38c | 15798 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15799 | if (attr != nullptr) |
8e19ed76 | 15800 | { |
9d2246fc | 15801 | if (attr->form_is_block () && attr->as_block ()->size > 0) |
dda83cd7 | 15802 | { |
9d2246fc TT |
15803 | struct dwarf_block *block = attr->as_block (); |
15804 | ||
15805 | if (block->data[0] == DW_OP_constu) | |
aec5aa8b TT |
15806 | { |
15807 | /* Old-style GCC. */ | |
9d2246fc | 15808 | fnp->voffset = decode_locdesc (block, cu) + 2; |
aec5aa8b | 15809 | } |
9d2246fc TT |
15810 | else if (block->data[0] == DW_OP_deref |
15811 | || (block->size > 1 | |
15812 | && block->data[0] == DW_OP_deref_size | |
15813 | && block->data[1] == cu->header.addr_size)) | |
aec5aa8b | 15814 | { |
9d2246fc | 15815 | fnp->voffset = decode_locdesc (block, cu); |
aec5aa8b TT |
15816 | if ((fnp->voffset % cu->header.addr_size) != 0) |
15817 | dwarf2_complex_location_expr_complaint (); | |
15818 | else | |
15819 | fnp->voffset /= cu->header.addr_size; | |
15820 | fnp->voffset += 2; | |
15821 | } | |
15822 | else | |
15823 | dwarf2_complex_location_expr_complaint (); | |
15824 | ||
15825 | if (!fnp->fcontext) | |
7e993ebf KS |
15826 | { |
15827 | /* If there is no `this' field and no DW_AT_containing_type, | |
15828 | we cannot actually find a base class context for the | |
15829 | vtable! */ | |
1f704f76 | 15830 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15831 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15832 | { | |
b98664d3 | 15833 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15834 | "function \"%s\" (offset %s)"), |
15835 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15836 | } |
15837 | else | |
15838 | { | |
15839 | fnp->fcontext | |
940da03e | 15840 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15841 | } |
15842 | } | |
aec5aa8b | 15843 | } |
cd6c91b4 | 15844 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 15845 | { |
4d3c2250 | 15846 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 | 15847 | } |
8e19ed76 | 15848 | else |
dda83cd7 | 15849 | { |
4d3c2250 KB |
15850 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15851 | fieldname); | |
dda83cd7 | 15852 | } |
0d564a31 | 15853 | } |
d48cc9dd DJ |
15854 | else |
15855 | { | |
15856 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
23dca5c3 | 15857 | if (attr != nullptr && attr->as_virtuality () != DW_VIRTUALITY_none) |
d48cc9dd DJ |
15858 | { |
15859 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15860 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15861 | "but the vtable offset is not specified"), |
9d8780f0 | 15862 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15863 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15864 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15865 | } | |
15866 | } | |
c906108c SS |
15867 | } |
15868 | ||
15869 | /* Create the vector of member function fields, and attach it to the type. */ | |
15870 | ||
15871 | static void | |
fba45db2 | 15872 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15873 | struct dwarf2_cu *cu) |
c906108c | 15874 | { |
b4ba55a1 | 15875 | if (cu->language == language_ada) |
a73c6dcd | 15876 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15877 | |
c906108c SS |
15878 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15879 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15880 | TYPE_ALLOC (type, |
15881 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15882 | |
be2daae6 | 15883 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15884 | { |
be2daae6 | 15885 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15886 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15887 | |
be2daae6 TT |
15888 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15889 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15890 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15891 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15892 | ||
15893 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15894 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15895 | } |
15896 | ||
be2daae6 | 15897 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15898 | } |
15899 | ||
1168df01 JB |
15900 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15901 | language, zero otherwise. */ | |
15902 | static int | |
15903 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15904 | { | |
15905 | static const char vptr[] = "_vptr"; | |
15906 | ||
9c37b5ae TT |
15907 | /* Look for the C++ form of the vtable. */ |
15908 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15909 | return 1; |
15910 | ||
15911 | return 0; | |
15912 | } | |
15913 | ||
c0dd20ea | 15914 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15915 | functions, with the ABI-specified layout. If TYPE describes |
15916 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15917 | |
15918 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15919 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15920 | |
0b92b5bb TT |
15921 | static void |
15922 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15923 | { |
09e2d7c7 | 15924 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15925 | |
15926 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15927 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15928 | return; |
c0dd20ea DJ |
15929 | |
15930 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15931 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15932 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15933 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15934 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15935 | return; | |
c0dd20ea DJ |
15936 | |
15937 | /* Find the type of the method. */ | |
940da03e | 15938 | pfn_type = type->field (0).type (); |
c0dd20ea | 15939 | if (pfn_type == NULL |
78134374 SM |
15940 | || pfn_type->code () != TYPE_CODE_PTR |
15941 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15942 | return; |
c0dd20ea DJ |
15943 | |
15944 | /* Look for the "this" argument. */ | |
15945 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15946 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15947 | /* || pfn_type->field (0).type () == NULL */ |
15948 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15949 | return; |
c0dd20ea | 15950 | |
940da03e | 15951 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15952 | new_type = alloc_type (objfile); |
09e2d7c7 | 15953 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15954 | pfn_type->fields (), pfn_type->num_fields (), |
a409645d | 15955 | pfn_type->has_varargs ()); |
0b92b5bb | 15956 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15957 | } |
1168df01 | 15958 | |
e26624c6 TT |
15959 | /* Helper for quirk_ada_thick_pointer. If TYPE is an array type that |
15960 | requires rewriting, then copy it and return the updated copy. | |
15961 | Otherwise return nullptr. */ | |
15962 | ||
15963 | static struct type * | |
15964 | rewrite_array_type (struct type *type) | |
15965 | { | |
15966 | if (type->code () != TYPE_CODE_ARRAY) | |
15967 | return nullptr; | |
15968 | ||
15969 | struct type *index_type = type->index_type (); | |
15970 | range_bounds *current_bounds = index_type->bounds (); | |
15971 | ||
15972 | /* Handle multi-dimensional arrays. */ | |
15973 | struct type *new_target = rewrite_array_type (TYPE_TARGET_TYPE (type)); | |
15974 | if (new_target == nullptr) | |
15975 | { | |
15976 | /* Maybe we don't need to rewrite this array. */ | |
15977 | if (current_bounds->low.kind () == PROP_CONST | |
15978 | && current_bounds->high.kind () == PROP_CONST) | |
15979 | return nullptr; | |
15980 | } | |
15981 | ||
15982 | /* Either the target type was rewritten, or the bounds have to be | |
15983 | updated. Either way we want to copy the type and update | |
15984 | everything. */ | |
15985 | struct type *copy = copy_type (type); | |
15986 | int nfields = copy->num_fields (); | |
15987 | field *new_fields | |
15988 | = ((struct field *) TYPE_ZALLOC (copy, | |
15989 | nfields * sizeof (struct field))); | |
15990 | memcpy (new_fields, copy->fields (), nfields * sizeof (struct field)); | |
15991 | copy->set_fields (new_fields); | |
15992 | if (new_target != nullptr) | |
15993 | TYPE_TARGET_TYPE (copy) = new_target; | |
15994 | ||
15995 | struct type *index_copy = copy_type (index_type); | |
15996 | range_bounds *bounds | |
15997 | = (struct range_bounds *) TYPE_ZALLOC (index_copy, | |
15998 | sizeof (range_bounds)); | |
15999 | *bounds = *current_bounds; | |
16000 | bounds->low.set_const_val (1); | |
16001 | bounds->high.set_const_val (0); | |
16002 | index_copy->set_bounds (bounds); | |
16003 | copy->set_index_type (index_copy); | |
16004 | ||
16005 | return copy; | |
16006 | } | |
16007 | ||
57567375 TT |
16008 | /* While some versions of GCC will generate complicated DWARF for an |
16009 | array (see quirk_ada_thick_pointer), more recent versions were | |
16010 | modified to emit an explicit thick pointer structure. However, in | |
16011 | this case, the array still has DWARF expressions for its ranges, | |
16012 | and these must be ignored. */ | |
16013 | ||
16014 | static void | |
16015 | quirk_ada_thick_pointer_struct (struct die_info *die, struct dwarf2_cu *cu, | |
16016 | struct type *type) | |
16017 | { | |
16018 | gdb_assert (cu->language == language_ada); | |
16019 | ||
16020 | /* Check for a structure with two children. */ | |
16021 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) | |
16022 | return; | |
16023 | ||
16024 | /* Check for P_ARRAY and P_BOUNDS members. */ | |
16025 | if (TYPE_FIELD_NAME (type, 0) == NULL | |
16026 | || strcmp (TYPE_FIELD_NAME (type, 0), "P_ARRAY") != 0 | |
16027 | || TYPE_FIELD_NAME (type, 1) == NULL | |
16028 | || strcmp (TYPE_FIELD_NAME (type, 1), "P_BOUNDS") != 0) | |
16029 | return; | |
16030 | ||
16031 | /* Make sure we're looking at a pointer to an array. */ | |
16032 | if (type->field (0).type ()->code () != TYPE_CODE_PTR) | |
16033 | return; | |
57567375 | 16034 | |
e26624c6 TT |
16035 | /* The Ada code already knows how to handle these types, so all that |
16036 | we need to do is turn the bounds into static bounds. However, we | |
16037 | don't want to rewrite existing array or index types in-place, | |
16038 | because those may be referenced in other contexts where this | |
16039 | rewriting is undesirable. */ | |
16040 | struct type *new_ary_type | |
16041 | = rewrite_array_type (TYPE_TARGET_TYPE (type->field (0).type ())); | |
16042 | if (new_ary_type != nullptr) | |
16043 | type->field (0).set_type (lookup_pointer_type (new_ary_type)); | |
57567375 TT |
16044 | } |
16045 | ||
2b4424c3 TT |
16046 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
16047 | appropriate error checking and issuing complaints if there is a | |
16048 | problem. */ | |
16049 | ||
16050 | static ULONGEST | |
16051 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
16052 | { | |
16053 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
16054 | ||
16055 | if (attr == nullptr) | |
16056 | return 0; | |
16057 | ||
cd6c91b4 | 16058 | if (!attr->form_is_constant ()) |
2b4424c3 | 16059 | { |
b98664d3 | 16060 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
16061 | " - DIE at %s [in module %s]"), |
16062 | sect_offset_str (die->sect_off), | |
5e22e966 | 16063 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
16064 | return 0; |
16065 | } | |
16066 | ||
529908cb TT |
16067 | LONGEST val = attr->constant_value (0); |
16068 | if (val < 0) | |
2b4424c3 | 16069 | { |
529908cb TT |
16070 | complaint (_("DW_AT_alignment value must not be negative" |
16071 | " - DIE at %s [in module %s]"), | |
16072 | sect_offset_str (die->sect_off), | |
16073 | objfile_name (cu->per_objfile->objfile)); | |
16074 | return 0; | |
2b4424c3 | 16075 | } |
529908cb | 16076 | ULONGEST align = val; |
2b4424c3 TT |
16077 | |
16078 | if (align == 0) | |
16079 | { | |
b98664d3 | 16080 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
16081 | " - DIE at %s [in module %s]"), |
16082 | sect_offset_str (die->sect_off), | |
5e22e966 | 16083 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
16084 | return 0; |
16085 | } | |
16086 | if ((align & (align - 1)) != 0) | |
16087 | { | |
b98664d3 | 16088 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
16089 | " - DIE at %s [in module %s]"), |
16090 | sect_offset_str (die->sect_off), | |
5e22e966 | 16091 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
16092 | return 0; |
16093 | } | |
16094 | ||
16095 | return align; | |
16096 | } | |
16097 | ||
16098 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
16099 | the alignment for TYPE. */ | |
16100 | ||
16101 | static void | |
16102 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
16103 | struct type *type) | |
16104 | { | |
16105 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 16106 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
16107 | " - DIE at %s [in module %s]"), |
16108 | sect_offset_str (die->sect_off), | |
5e22e966 | 16109 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 16110 | } |
685b1105 | 16111 | |
e35000a7 TBA |
16112 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
16113 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
16114 | ||
16115 | static bool | |
16116 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
16117 | { | |
16118 | switch (value) | |
16119 | { | |
16120 | case DW_CC_normal: | |
16121 | case DW_CC_pass_by_reference: | |
16122 | case DW_CC_pass_by_value: | |
16123 | return true; | |
16124 | ||
16125 | default: | |
16126 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 16127 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
16128 | return false; |
16129 | } | |
16130 | } | |
16131 | ||
d0922fcf TBA |
16132 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
16133 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
16134 | also according to GNU-specific values (see include/dwarf2.h). */ | |
16135 | ||
16136 | static bool | |
16137 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
16138 | { | |
16139 | switch (value) | |
16140 | { | |
16141 | case DW_CC_normal: | |
16142 | case DW_CC_program: | |
16143 | case DW_CC_nocall: | |
16144 | return true; | |
16145 | ||
16146 | case DW_CC_GNU_renesas_sh: | |
16147 | case DW_CC_GNU_borland_fastcall_i386: | |
16148 | case DW_CC_GDB_IBM_OpenCL: | |
16149 | return true; | |
16150 | ||
16151 | default: | |
16152 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 16153 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
16154 | return false; |
16155 | } | |
16156 | } | |
16157 | ||
c906108c | 16158 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
16159 | (definition) to create a type for the structure or union. Fill in |
16160 | the type's name and general properties; the members will not be | |
83655187 DE |
16161 | processed until process_structure_scope. A symbol table entry for |
16162 | the type will also not be done until process_structure_scope (assuming | |
16163 | the type has a name). | |
c906108c | 16164 | |
c767944b DJ |
16165 | NOTE: we need to call these functions regardless of whether or not the |
16166 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 16167 | structure or union. This gets the type entered into our set of |
83655187 | 16168 | user defined types. */ |
c906108c | 16169 | |
f792889a | 16170 | static struct type * |
134d01f1 | 16171 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16172 | { |
5e22e966 | 16173 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
16174 | struct type *type; |
16175 | struct attribute *attr; | |
15d034d0 | 16176 | const char *name; |
c906108c | 16177 | |
348e048f DE |
16178 | /* If the definition of this type lives in .debug_types, read that type. |
16179 | Don't follow DW_AT_specification though, that will take us back up | |
16180 | the chain and we want to go down. */ | |
052c8bb8 | 16181 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16182 | if (attr != nullptr) |
348e048f | 16183 | { |
ac9ec31b | 16184 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16185 | |
ac9ec31b | 16186 | /* The type's CU may not be the same as CU. |
02142a6c | 16187 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16188 | return set_die_type (die, type, cu); |
16189 | } | |
16190 | ||
c0dd20ea | 16191 | type = alloc_type (objfile); |
c906108c | 16192 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 16193 | |
39cbfefa DJ |
16194 | name = dwarf2_name (die, cu); |
16195 | if (name != NULL) | |
c906108c | 16196 | { |
987504bb | 16197 | if (cu->language == language_cplus |
c44af4eb TT |
16198 | || cu->language == language_d |
16199 | || cu->language == language_rust) | |
63d06c5c | 16200 | { |
15d034d0 | 16201 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
16202 | |
16203 | /* dwarf2_full_name might have already finished building the DIE's | |
16204 | type. If so, there is no need to continue. */ | |
16205 | if (get_die_type (die, cu) != NULL) | |
16206 | return get_die_type (die, cu); | |
16207 | ||
d0e39ea2 | 16208 | type->set_name (full_name); |
63d06c5c DC |
16209 | } |
16210 | else | |
16211 | { | |
d8151005 DJ |
16212 | /* The name is already allocated along with this objfile, so |
16213 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 16214 | type->set_name (name); |
63d06c5c | 16215 | } |
c906108c SS |
16216 | } |
16217 | ||
16218 | if (die->tag == DW_TAG_structure_type) | |
16219 | { | |
67607e24 | 16220 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16221 | } |
16222 | else if (die->tag == DW_TAG_union_type) | |
16223 | { | |
67607e24 | 16224 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
16225 | } |
16226 | else | |
16227 | { | |
67607e24 | 16228 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16229 | } |
16230 | ||
0cc2414c TT |
16231 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
16232 | TYPE_DECLARED_CLASS (type) = 1; | |
16233 | ||
e35000a7 TBA |
16234 | /* Store the calling convention in the type if it's available in |
16235 | the die. Otherwise the calling convention remains set to | |
16236 | the default value DW_CC_normal. */ | |
16237 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
16238 | if (attr != nullptr | |
529908cb | 16239 | && is_valid_DW_AT_calling_convention_for_type (attr->constant_value (0))) |
e35000a7 TBA |
16240 | { |
16241 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16242 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
529908cb | 16243 | = (enum dwarf_calling_convention) (attr->constant_value (0)); |
e35000a7 TBA |
16244 | } |
16245 | ||
e142c38c | 16246 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16247 | if (attr != nullptr) |
c906108c | 16248 | { |
cd6c91b4 | 16249 | if (attr->form_is_constant ()) |
dda83cd7 | 16250 | TYPE_LENGTH (type) = attr->constant_value (0); |
155bfbd3 JB |
16251 | else |
16252 | { | |
f8e89861 | 16253 | struct dynamic_prop prop; |
293e7e51 | 16254 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 16255 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
dda83cd7 | 16256 | TYPE_LENGTH (type) = 0; |
155bfbd3 | 16257 | } |
c906108c SS |
16258 | } |
16259 | else | |
16260 | { | |
16261 | TYPE_LENGTH (type) = 0; | |
16262 | } | |
16263 | ||
2b4424c3 TT |
16264 | maybe_set_alignment (cu, die, type); |
16265 | ||
5230b05a | 16266 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 16267 | { |
5230b05a WT |
16268 | /* ICC<14 does not output the required DW_AT_declaration on |
16269 | incomplete types, but gives them a size of zero. */ | |
b4b73759 | 16270 | type->set_is_stub (true); |
685b1105 JK |
16271 | } |
16272 | else | |
9baccff6 | 16273 | type->set_stub_is_supported (true); |
685b1105 | 16274 | |
dc718098 | 16275 | if (die_is_declaration (die, cu)) |
b4b73759 | 16276 | type->set_is_stub (true); |
a6c727b2 DJ |
16277 | else if (attr == NULL && die->child == NULL |
16278 | && producer_is_realview (cu->producer)) | |
16279 | /* RealView does not output the required DW_AT_declaration | |
16280 | on incomplete types. */ | |
b4b73759 | 16281 | type->set_is_stub (true); |
dc718098 | 16282 | |
c906108c SS |
16283 | /* We need to add the type field to the die immediately so we don't |
16284 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 16285 | type within the structure itself. */ |
1c379e20 | 16286 | set_die_type (die, type, cu); |
c906108c | 16287 | |
7e314c57 JK |
16288 | /* set_die_type should be already done. */ |
16289 | set_descriptive_type (type, die, cu); | |
16290 | ||
c767944b DJ |
16291 | return type; |
16292 | } | |
16293 | ||
9c6a1327 TT |
16294 | static void handle_struct_member_die |
16295 | (struct die_info *child_die, | |
16296 | struct type *type, | |
16297 | struct field_info *fi, | |
16298 | std::vector<struct symbol *> *template_args, | |
16299 | struct dwarf2_cu *cu); | |
16300 | ||
16301 | /* A helper for handle_struct_member_die that handles | |
16302 | DW_TAG_variant_part. */ | |
16303 | ||
16304 | static void | |
16305 | handle_variant_part (struct die_info *die, struct type *type, | |
16306 | struct field_info *fi, | |
16307 | std::vector<struct symbol *> *template_args, | |
16308 | struct dwarf2_cu *cu) | |
16309 | { | |
16310 | variant_part_builder *new_part; | |
16311 | if (fi->current_variant_part == nullptr) | |
16312 | { | |
16313 | fi->variant_parts.emplace_back (); | |
16314 | new_part = &fi->variant_parts.back (); | |
16315 | } | |
16316 | else if (!fi->current_variant_part->processing_variant) | |
16317 | { | |
16318 | complaint (_("nested DW_TAG_variant_part seen " | |
16319 | "- DIE at %s [in module %s]"), | |
16320 | sect_offset_str (die->sect_off), | |
5e22e966 | 16321 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16322 | return; |
16323 | } | |
16324 | else | |
16325 | { | |
16326 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
16327 | current.variant_parts.emplace_back (); | |
16328 | new_part = ¤t.variant_parts.back (); | |
16329 | } | |
16330 | ||
16331 | /* When we recurse, we want callees to add to this new variant | |
16332 | part. */ | |
16333 | scoped_restore save_current_variant_part | |
16334 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
16335 | ||
16336 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16337 | if (discr == NULL) | |
16338 | { | |
16339 | /* It's a univariant form, an extension we support. */ | |
16340 | } | |
16341 | else if (discr->form_is_ref ()) | |
16342 | { | |
16343 | struct dwarf2_cu *target_cu = cu; | |
16344 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16345 | ||
16346 | new_part->discriminant_offset = target_die->sect_off; | |
16347 | } | |
16348 | else | |
16349 | { | |
16350 | complaint (_("DW_AT_discr does not have DIE reference form" | |
16351 | " - DIE at %s [in module %s]"), | |
16352 | sect_offset_str (die->sect_off), | |
5e22e966 | 16353 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16354 | } |
16355 | ||
16356 | for (die_info *child_die = die->child; | |
16357 | child_die != NULL; | |
16358 | child_die = child_die->sibling) | |
16359 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
16360 | } | |
16361 | ||
16362 | /* A helper for handle_struct_member_die that handles | |
16363 | DW_TAG_variant. */ | |
16364 | ||
16365 | static void | |
16366 | handle_variant (struct die_info *die, struct type *type, | |
16367 | struct field_info *fi, | |
16368 | std::vector<struct symbol *> *template_args, | |
16369 | struct dwarf2_cu *cu) | |
16370 | { | |
16371 | if (fi->current_variant_part == nullptr) | |
16372 | { | |
16373 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
16374 | "- DIE at %s [in module %s]"), | |
16375 | sect_offset_str (die->sect_off), | |
5e22e966 | 16376 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16377 | return; |
16378 | } | |
16379 | if (fi->current_variant_part->processing_variant) | |
16380 | { | |
16381 | complaint (_("nested DW_TAG_variant seen " | |
16382 | "- DIE at %s [in module %s]"), | |
16383 | sect_offset_str (die->sect_off), | |
5e22e966 | 16384 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16385 | return; |
16386 | } | |
16387 | ||
16388 | scoped_restore save_processing_variant | |
16389 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
16390 | true); | |
16391 | ||
16392 | fi->current_variant_part->variants.emplace_back (); | |
16393 | variant_field &variant = fi->current_variant_part->variants.back (); | |
16394 | variant.first_field = fi->fields.size (); | |
16395 | ||
16396 | /* In a variant we want to get the discriminant and also add a | |
16397 | field for our sole member child. */ | |
16398 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
cae21f8e | 16399 | if (discr == nullptr || !discr->form_is_constant ()) |
9c6a1327 TT |
16400 | { |
16401 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
9d2246fc | 16402 | if (discr == nullptr || discr->as_block ()->size == 0) |
9c6a1327 TT |
16403 | variant.default_branch = true; |
16404 | else | |
9d2246fc | 16405 | variant.discr_list_data = discr->as_block (); |
9c6a1327 TT |
16406 | } |
16407 | else | |
cae21f8e | 16408 | variant.discriminant_value = discr->constant_value (0); |
9c6a1327 TT |
16409 | |
16410 | for (die_info *variant_child = die->child; | |
16411 | variant_child != NULL; | |
16412 | variant_child = variant_child->sibling) | |
16413 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
16414 | ||
16415 | variant.last_field = fi->fields.size (); | |
16416 | } | |
16417 | ||
2ddeaf8a TT |
16418 | /* A helper for process_structure_scope that handles a single member |
16419 | DIE. */ | |
16420 | ||
16421 | static void | |
16422 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
16423 | struct field_info *fi, | |
16424 | std::vector<struct symbol *> *template_args, | |
16425 | struct dwarf2_cu *cu) | |
16426 | { | |
16427 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 16428 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
16429 | { |
16430 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
16431 | should be a DW_TAG_member that is a declaration, but | |
16432 | all versions of G++ as of this writing (so through at | |
16433 | least 3.2.1) incorrectly generate DW_TAG_variable | |
16434 | tags for them instead. */ | |
16435 | dwarf2_add_field (fi, child_die, cu); | |
16436 | } | |
16437 | else if (child_die->tag == DW_TAG_subprogram) | |
16438 | { | |
16439 | /* Rust doesn't have member functions in the C++ sense. | |
16440 | However, it does emit ordinary functions as children | |
16441 | of a struct DIE. */ | |
16442 | if (cu->language == language_rust) | |
16443 | read_func_scope (child_die, cu); | |
16444 | else | |
16445 | { | |
16446 | /* C++ member function. */ | |
16447 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16448 | } | |
16449 | } | |
16450 | else if (child_die->tag == DW_TAG_inheritance) | |
16451 | { | |
16452 | /* C++ base class field. */ | |
16453 | dwarf2_add_field (fi, child_die, cu); | |
16454 | } | |
16455 | else if (type_can_define_types (child_die)) | |
16456 | dwarf2_add_type_defn (fi, child_die, cu); | |
16457 | else if (child_die->tag == DW_TAG_template_type_param | |
16458 | || child_die->tag == DW_TAG_template_value_param) | |
16459 | { | |
16460 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16461 | ||
16462 | if (arg != NULL) | |
16463 | template_args->push_back (arg); | |
16464 | } | |
9c6a1327 TT |
16465 | else if (child_die->tag == DW_TAG_variant_part) |
16466 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 16467 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 16468 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
16469 | } |
16470 | ||
c767944b DJ |
16471 | /* Finish creating a structure or union type, including filling in |
16472 | its members and creating a symbol for it. */ | |
16473 | ||
16474 | static void | |
16475 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16476 | { | |
5e22e966 | 16477 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 16478 | struct die_info *child_die; |
c767944b DJ |
16479 | struct type *type; |
16480 | ||
16481 | type = get_die_type (die, cu); | |
16482 | if (type == NULL) | |
16483 | type = read_structure_type (die, cu); | |
16484 | ||
3e1d3d8c | 16485 | bool has_template_parameters = false; |
e142c38c | 16486 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16487 | { |
16488 | struct field_info fi; | |
2f4732b0 | 16489 | std::vector<struct symbol *> template_args; |
c906108c | 16490 | |
639d11d3 | 16491 | child_die = die->child; |
c906108c SS |
16492 | |
16493 | while (child_die && child_die->tag) | |
16494 | { | |
2ddeaf8a | 16495 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 16496 | child_die = child_die->sibling; |
c906108c SS |
16497 | } |
16498 | ||
34eaf542 | 16499 | /* Attach template arguments to type. */ |
2f4732b0 | 16500 | if (!template_args.empty ()) |
34eaf542 | 16501 | { |
3e1d3d8c | 16502 | has_template_parameters = true; |
34eaf542 | 16503 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16504 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16505 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16506 | = XOBNEWVEC (&objfile->objfile_obstack, |
16507 | struct symbol *, | |
16508 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16509 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16510 | template_args.data (), |
34eaf542 TT |
16511 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16512 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16513 | } |
16514 | ||
c906108c | 16515 | /* Attach fields and member functions to the type. */ |
317f7127 | 16516 | if (fi.nfields () > 0) |
e7c27a73 | 16517 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16518 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16519 | { |
e7c27a73 | 16520 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16521 | |
c5aa993b | 16522 | /* Get the type which refers to the base class (possibly this |
c906108c | 16523 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16524 | class from the DW_AT_containing_type attribute. This use of |
16525 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16526 | |
e142c38c | 16527 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16528 | { |
e7c27a73 | 16529 | struct type *t = die_containing_type (die, cu); |
c906108c | 16530 | |
ae6ae975 | 16531 | set_type_vptr_basetype (type, t); |
c906108c SS |
16532 | if (type == t) |
16533 | { | |
c906108c SS |
16534 | int i; |
16535 | ||
16536 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 16537 | for (i = t->num_fields () - 1; |
c906108c SS |
16538 | i >= TYPE_N_BASECLASSES (t); |
16539 | --i) | |
16540 | { | |
0d5cff50 | 16541 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16542 | |
dda83cd7 | 16543 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16544 | { |
ae6ae975 | 16545 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16546 | break; |
16547 | } | |
16548 | } | |
16549 | ||
16550 | /* Complain if virtual function table field not found. */ | |
16551 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16552 | complaint (_("virtual function table pointer " |
3e43a32a | 16553 | "not found when defining class '%s'"), |
7d93a1e0 | 16554 | type->name () ? type->name () : ""); |
c906108c SS |
16555 | } |
16556 | else | |
16557 | { | |
ae6ae975 | 16558 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16559 | } |
16560 | } | |
f6235d4c | 16561 | else if (cu->producer |
61012eef | 16562 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16563 | { |
16564 | /* The IBM XLC compiler does not provide direct indication | |
dda83cd7 SM |
16565 | of the containing type, but the vtable pointer is |
16566 | always named __vfp. */ | |
f6235d4c EZ |
16567 | |
16568 | int i; | |
16569 | ||
1f704f76 | 16570 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
16571 | i >= TYPE_N_BASECLASSES (type); |
16572 | --i) | |
16573 | { | |
16574 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16575 | { | |
ae6ae975 DE |
16576 | set_type_vptr_fieldno (type, i); |
16577 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16578 | break; |
16579 | } | |
16580 | } | |
16581 | } | |
c906108c | 16582 | } |
98751a41 JK |
16583 | |
16584 | /* Copy fi.typedef_field_list linked list elements content into the | |
16585 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16586 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16587 | { |
be2daae6 | 16588 | int count = fi.typedef_field_list.size (); |
98751a41 | 16589 | |
a0d7a4ff | 16590 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16591 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16592 | = ((struct decl_field *) |
be2daae6 TT |
16593 | TYPE_ALLOC (type, |
16594 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16595 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16596 | |
be2daae6 TT |
16597 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16598 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16599 | } |
c767944b | 16600 | |
883fd55a KS |
16601 | /* Copy fi.nested_types_list linked list elements content into the |
16602 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16603 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16604 | { |
be2daae6 | 16605 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16606 | |
16607 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16608 | TYPE_NESTED_TYPES_ARRAY (type) | |
16609 | = ((struct decl_field *) | |
be2daae6 TT |
16610 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16611 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16612 | |
be2daae6 TT |
16613 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16614 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16615 | } |
c906108c | 16616 | } |
63d06c5c | 16617 | |
bb5ed363 | 16618 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16619 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16620 | cu->rust_unions.push_back (type); | |
57567375 TT |
16621 | else if (cu->language == language_ada) |
16622 | quirk_ada_thick_pointer_struct (die, cu, type); | |
0b92b5bb | 16623 | |
90aeadfc DC |
16624 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16625 | snapshots) has been known to create a die giving a declaration | |
16626 | for a class that has, as a child, a die giving a definition for a | |
16627 | nested class. So we have to process our children even if the | |
16628 | current die is a declaration. Normally, of course, a declaration | |
16629 | won't have any children at all. */ | |
134d01f1 | 16630 | |
ca040673 DE |
16631 | child_die = die->child; |
16632 | ||
90aeadfc DC |
16633 | while (child_die != NULL && child_die->tag) |
16634 | { | |
16635 | if (child_die->tag == DW_TAG_member | |
16636 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16637 | || child_die->tag == DW_TAG_inheritance |
16638 | || child_die->tag == DW_TAG_template_value_param | |
16639 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16640 | { |
90aeadfc | 16641 | /* Do nothing. */ |
134d01f1 | 16642 | } |
90aeadfc DC |
16643 | else |
16644 | process_die (child_die, cu); | |
134d01f1 | 16645 | |
436c571c | 16646 | child_die = child_die->sibling; |
134d01f1 DJ |
16647 | } |
16648 | ||
fa4028e9 JB |
16649 | /* Do not consider external references. According to the DWARF standard, |
16650 | these DIEs are identified by the fact that they have no byte_size | |
16651 | attribute, and a declaration attribute. */ | |
16652 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16653 | || !die_is_declaration (die, cu) |
16654 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16655 | { |
16656 | struct symbol *sym = new_symbol (die, type, cu); | |
16657 | ||
16658 | if (has_template_parameters) | |
16659 | { | |
a776957c TT |
16660 | struct symtab *symtab; |
16661 | if (sym != nullptr) | |
16662 | symtab = symbol_symtab (sym); | |
16663 | else if (cu->line_header != nullptr) | |
16664 | { | |
16665 | /* Any related symtab will do. */ | |
16666 | symtab | |
7ba99d21 | 16667 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16668 | } |
16669 | else | |
16670 | { | |
16671 | symtab = nullptr; | |
16672 | complaint (_("could not find suitable " | |
16673 | "symtab for template parameter" | |
16674 | " - DIE at %s [in module %s]"), | |
16675 | sect_offset_str (die->sect_off), | |
16676 | objfile_name (objfile)); | |
16677 | } | |
16678 | ||
16679 | if (symtab != nullptr) | |
16680 | { | |
16681 | /* Make sure that the symtab is set on the new symbols. | |
16682 | Even though they don't appear in this symtab directly, | |
16683 | other parts of gdb assume that symbols do, and this is | |
16684 | reasonably true. */ | |
16685 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16686 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16687 | } | |
3e1d3d8c TT |
16688 | } |
16689 | } | |
134d01f1 DJ |
16690 | } |
16691 | ||
ed6acedd TT |
16692 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16693 | type, update TYPE using some information only available in DIE's | |
16694 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16695 | |
16696 | static void | |
16697 | update_enumeration_type_from_children (struct die_info *die, | |
16698 | struct type *type, | |
16699 | struct dwarf2_cu *cu) | |
16700 | { | |
60f7655a | 16701 | struct die_info *child_die; |
55426c9d JB |
16702 | int unsigned_enum = 1; |
16703 | int flag_enum = 1; | |
55426c9d | 16704 | |
8268c778 | 16705 | auto_obstack obstack; |
ed6acedd | 16706 | std::vector<struct field> fields; |
55426c9d | 16707 | |
60f7655a DE |
16708 | for (child_die = die->child; |
16709 | child_die != NULL && child_die->tag; | |
436c571c | 16710 | child_die = child_die->sibling) |
55426c9d JB |
16711 | { |
16712 | struct attribute *attr; | |
16713 | LONGEST value; | |
16714 | const gdb_byte *bytes; | |
16715 | struct dwarf2_locexpr_baton *baton; | |
16716 | const char *name; | |
60f7655a | 16717 | |
55426c9d JB |
16718 | if (child_die->tag != DW_TAG_enumerator) |
16719 | continue; | |
16720 | ||
16721 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16722 | if (attr == NULL) | |
16723 | continue; | |
16724 | ||
16725 | name = dwarf2_name (child_die, cu); | |
16726 | if (name == NULL) | |
16727 | name = "<anonymous enumerator>"; | |
16728 | ||
16729 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16730 | &value, &bytes, &baton); | |
16731 | if (value < 0) | |
16732 | { | |
16733 | unsigned_enum = 0; | |
16734 | flag_enum = 0; | |
16735 | } | |
55426c9d | 16736 | else |
edd45eb0 SM |
16737 | { |
16738 | if (count_one_bits_ll (value) >= 2) | |
16739 | flag_enum = 0; | |
edd45eb0 | 16740 | } |
55426c9d | 16741 | |
ed6acedd TT |
16742 | fields.emplace_back (); |
16743 | struct field &field = fields.back (); | |
16744 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16745 | SET_FIELD_ENUMVAL (field, value); | |
16746 | } | |
16747 | ||
16748 | if (!fields.empty ()) | |
16749 | { | |
5e33d5f4 | 16750 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16751 | type->set_fields |
16752 | ((struct field *) | |
16753 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16754 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16755 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16756 | } |
16757 | ||
16758 | if (unsigned_enum) | |
653223d3 SM |
16759 | type->set_is_unsigned (true); |
16760 | ||
55426c9d JB |
16761 | if (flag_enum) |
16762 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16763 | } |
16764 | ||
134d01f1 DJ |
16765 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16766 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16767 | |
f792889a | 16768 | static struct type * |
134d01f1 | 16769 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16770 | { |
5e22e966 | 16771 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16772 | struct type *type; |
c906108c | 16773 | struct attribute *attr; |
0114d602 | 16774 | const char *name; |
134d01f1 | 16775 | |
348e048f DE |
16776 | /* If the definition of this type lives in .debug_types, read that type. |
16777 | Don't follow DW_AT_specification though, that will take us back up | |
16778 | the chain and we want to go down. */ | |
052c8bb8 | 16779 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16780 | if (attr != nullptr) |
348e048f | 16781 | { |
ac9ec31b | 16782 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16783 | |
ac9ec31b | 16784 | /* The type's CU may not be the same as CU. |
02142a6c | 16785 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16786 | return set_die_type (die, type, cu); |
16787 | } | |
16788 | ||
c906108c SS |
16789 | type = alloc_type (objfile); |
16790 | ||
67607e24 | 16791 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16792 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16793 | if (name != NULL) |
d0e39ea2 | 16794 | type->set_name (name); |
c906108c | 16795 | |
0626fc76 TT |
16796 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16797 | if (attr != NULL) | |
16798 | { | |
16799 | struct type *underlying_type = die_type (die, cu); | |
16800 | ||
16801 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16802 | } | |
16803 | ||
e142c38c | 16804 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16805 | if (attr != nullptr) |
c906108c | 16806 | { |
529908cb | 16807 | TYPE_LENGTH (type) = attr->constant_value (0); |
c906108c SS |
16808 | } |
16809 | else | |
16810 | { | |
16811 | TYPE_LENGTH (type) = 0; | |
16812 | } | |
16813 | ||
2b4424c3 TT |
16814 | maybe_set_alignment (cu, die, type); |
16815 | ||
137033e9 JB |
16816 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16817 | declared as private in the package spec, and then defined only | |
16818 | inside the package body. Such types are known as Taft Amendment | |
16819 | Types. When another package uses such a type, an incomplete DIE | |
16820 | may be generated by the compiler. */ | |
02eb380e | 16821 | if (die_is_declaration (die, cu)) |
b4b73759 | 16822 | type->set_is_stub (true); |
02eb380e | 16823 | |
0626fc76 TT |
16824 | /* If this type has an underlying type that is not a stub, then we |
16825 | may use its attributes. We always use the "unsigned" attribute | |
16826 | in this situation, because ordinarily we guess whether the type | |
16827 | is unsigned -- but the guess can be wrong and the underlying type | |
16828 | can tell us the reality. However, we defer to a local size | |
16829 | attribute if one exists, because this lets the compiler override | |
16830 | the underlying type if needed. */ | |
e46d3488 | 16831 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_TARGET_TYPE (type)->is_stub ()) |
0626fc76 | 16832 | { |
9e7c9a03 HD |
16833 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16834 | underlying_type = check_typedef (underlying_type); | |
653223d3 SM |
16835 | |
16836 | type->set_is_unsigned (underlying_type->is_unsigned ()); | |
16837 | ||
0626fc76 | 16838 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16839 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
653223d3 | 16840 | |
2b4424c3 | 16841 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16842 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16843 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16844 | } |
16845 | ||
3d567982 TT |
16846 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16847 | ||
ed6acedd TT |
16848 | set_die_type (die, type, cu); |
16849 | ||
16850 | /* Finish the creation of this type by using the enum's children. | |
16851 | Note that, as usual, this must come after set_die_type to avoid | |
16852 | infinite recursion when trying to compute the names of the | |
16853 | enumerators. */ | |
16854 | update_enumeration_type_from_children (die, type, cu); | |
16855 | ||
16856 | return type; | |
134d01f1 DJ |
16857 | } |
16858 | ||
16859 | /* Given a pointer to a die which begins an enumeration, process all | |
16860 | the dies that define the members of the enumeration, and create the | |
16861 | symbol for the enumeration type. | |
16862 | ||
16863 | NOTE: We reverse the order of the element list. */ | |
16864 | ||
16865 | static void | |
16866 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16867 | { | |
f792889a | 16868 | struct type *this_type; |
134d01f1 | 16869 | |
f792889a DJ |
16870 | this_type = get_die_type (die, cu); |
16871 | if (this_type == NULL) | |
16872 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16873 | |
639d11d3 | 16874 | if (die->child != NULL) |
c906108c | 16875 | { |
9dc481d3 | 16876 | struct die_info *child_die; |
15d034d0 | 16877 | const char *name; |
9dc481d3 | 16878 | |
639d11d3 | 16879 | child_die = die->child; |
c906108c SS |
16880 | while (child_die && child_die->tag) |
16881 | { | |
16882 | if (child_die->tag != DW_TAG_enumerator) | |
16883 | { | |
e7c27a73 | 16884 | process_die (child_die, cu); |
c906108c SS |
16885 | } |
16886 | else | |
16887 | { | |
39cbfefa DJ |
16888 | name = dwarf2_name (child_die, cu); |
16889 | if (name) | |
ed6acedd | 16890 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16891 | } |
16892 | ||
436c571c | 16893 | child_die = child_die->sibling; |
c906108c | 16894 | } |
c906108c | 16895 | } |
134d01f1 | 16896 | |
6c83ed52 TT |
16897 | /* If we are reading an enum from a .debug_types unit, and the enum |
16898 | is a declaration, and the enum is not the signatured type in the | |
16899 | unit, then we do not want to add a symbol for it. Adding a | |
16900 | symbol would in some cases obscure the true definition of the | |
16901 | enum, giving users an incomplete type when the definition is | |
16902 | actually available. Note that we do not want to do this for all | |
16903 | enums which are just declarations, because C++0x allows forward | |
16904 | enum declarations. */ | |
3019eac3 | 16905 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16906 | && die_is_declaration (die, cu)) |
16907 | { | |
52dc124a | 16908 | struct signatured_type *sig_type; |
6c83ed52 | 16909 | |
c0f78cd4 | 16910 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16911 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16912 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16913 | return; |
16914 | } | |
16915 | ||
f792889a | 16916 | new_symbol (die, this_type, cu); |
c906108c SS |
16917 | } |
16918 | ||
57567375 TT |
16919 | /* Helper function for quirk_ada_thick_pointer that examines a bounds |
16920 | expression for an index type and finds the corresponding field | |
16921 | offset in the hidden "P_BOUNDS" structure. Returns true on success | |
16922 | and updates *FIELD, false if it fails to recognize an | |
16923 | expression. */ | |
16924 | ||
16925 | static bool | |
16926 | recognize_bound_expression (struct die_info *die, enum dwarf_attribute name, | |
16927 | int *bounds_offset, struct field *field, | |
16928 | struct dwarf2_cu *cu) | |
16929 | { | |
16930 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16931 | if (attr == nullptr || !attr->form_is_block ()) | |
16932 | return false; | |
16933 | ||
16934 | const struct dwarf_block *block = attr->as_block (); | |
16935 | const gdb_byte *start = block->data; | |
16936 | const gdb_byte *end = block->data + block->size; | |
16937 | ||
16938 | /* The expression to recognize generally looks like: | |
16939 | ||
16940 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16941 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16942 | ||
16943 | However, the second "plus_uconst" may be missing: | |
16944 | ||
16945 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16946 | DW_OP_deref_size: 4) | |
16947 | ||
16948 | This happens when the field is at the start of the structure. | |
16949 | ||
16950 | Also, the final deref may not be sized: | |
16951 | ||
16952 | (DW_OP_push_object_address; DW_OP_plus_uconst: 4; DW_OP_deref; | |
16953 | DW_OP_deref) | |
16954 | ||
16955 | This happens when the size of the index type happens to be the | |
16956 | same as the architecture's word size. This can occur with or | |
16957 | without the second plus_uconst. */ | |
16958 | ||
16959 | if (end - start < 2) | |
16960 | return false; | |
16961 | if (*start++ != DW_OP_push_object_address) | |
16962 | return false; | |
16963 | if (*start++ != DW_OP_plus_uconst) | |
16964 | return false; | |
16965 | ||
16966 | uint64_t this_bound_off; | |
16967 | start = gdb_read_uleb128 (start, end, &this_bound_off); | |
16968 | if (start == nullptr || (int) this_bound_off != this_bound_off) | |
16969 | return false; | |
16970 | /* Update *BOUNDS_OFFSET if needed, or alternatively verify that it | |
16971 | is consistent among all bounds. */ | |
16972 | if (*bounds_offset == -1) | |
16973 | *bounds_offset = this_bound_off; | |
16974 | else if (*bounds_offset != this_bound_off) | |
16975 | return false; | |
16976 | ||
16977 | if (start == end || *start++ != DW_OP_deref) | |
16978 | return false; | |
16979 | ||
16980 | int offset = 0; | |
16981 | if (start ==end) | |
16982 | return false; | |
16983 | else if (*start == DW_OP_deref_size || *start == DW_OP_deref) | |
16984 | { | |
16985 | /* This means an offset of 0. */ | |
16986 | } | |
16987 | else if (*start++ != DW_OP_plus_uconst) | |
16988 | return false; | |
16989 | else | |
16990 | { | |
16991 | /* The size is the parameter to DW_OP_plus_uconst. */ | |
16992 | uint64_t val; | |
16993 | start = gdb_read_uleb128 (start, end, &val); | |
16994 | if (start == nullptr) | |
16995 | return false; | |
16996 | if ((int) val != val) | |
16997 | return false; | |
16998 | offset = val; | |
16999 | } | |
17000 | ||
17001 | if (start == end) | |
17002 | return false; | |
17003 | ||
17004 | uint64_t size; | |
17005 | if (*start == DW_OP_deref_size) | |
17006 | { | |
17007 | start = gdb_read_uleb128 (start + 1, end, &size); | |
17008 | if (start == nullptr) | |
17009 | return false; | |
17010 | } | |
17011 | else if (*start == DW_OP_deref) | |
17012 | { | |
17013 | size = cu->header.addr_size; | |
17014 | ++start; | |
17015 | } | |
17016 | else | |
17017 | return false; | |
17018 | ||
17019 | SET_FIELD_BITPOS (*field, 8 * offset); | |
17020 | if (size != TYPE_LENGTH (field->type ())) | |
17021 | FIELD_BITSIZE (*field) = 8 * size; | |
17022 | ||
17023 | return true; | |
17024 | } | |
17025 | ||
17026 | /* With -fgnat-encodings=minimal, gcc will emit some unusual DWARF for | |
17027 | some kinds of Ada arrays: | |
17028 | ||
17029 | <1><11db>: Abbrev Number: 7 (DW_TAG_array_type) | |
17030 | <11dc> DW_AT_name : (indirect string, offset: 0x1bb8): string | |
17031 | <11e0> DW_AT_data_location: 2 byte block: 97 6 | |
17032 | (DW_OP_push_object_address; DW_OP_deref) | |
17033 | <11e3> DW_AT_type : <0x1173> | |
17034 | <11e7> DW_AT_sibling : <0x1201> | |
17035 | <2><11eb>: Abbrev Number: 8 (DW_TAG_subrange_type) | |
17036 | <11ec> DW_AT_type : <0x1206> | |
17037 | <11f0> DW_AT_lower_bound : 6 byte block: 97 23 8 6 94 4 | |
17038 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
17039 | DW_OP_deref_size: 4) | |
17040 | <11f7> DW_AT_upper_bound : 8 byte block: 97 23 8 6 23 4 94 4 | |
17041 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
17042 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
17043 | ||
17044 | This actually represents a "thick pointer", which is a structure | |
17045 | with two elements: one that is a pointer to the array data, and one | |
17046 | that is a pointer to another structure; this second structure holds | |
17047 | the array bounds. | |
17048 | ||
17049 | This returns a new type on success, or nullptr if this didn't | |
17050 | recognize the type. */ | |
17051 | ||
17052 | static struct type * | |
17053 | quirk_ada_thick_pointer (struct die_info *die, struct dwarf2_cu *cu, | |
17054 | struct type *type) | |
17055 | { | |
17056 | struct attribute *attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
17057 | /* So far we've only seen this with block form. */ | |
17058 | if (attr == nullptr || !attr->form_is_block ()) | |
17059 | return nullptr; | |
17060 | ||
17061 | /* Note that this will fail if the structure layout is changed by | |
17062 | the compiler. However, we have no good way to recognize some | |
17063 | other layout, because we don't know what expression the compiler | |
17064 | might choose to emit should this happen. */ | |
17065 | struct dwarf_block *blk = attr->as_block (); | |
17066 | if (blk->size != 2 | |
17067 | || blk->data[0] != DW_OP_push_object_address | |
17068 | || blk->data[1] != DW_OP_deref) | |
17069 | return nullptr; | |
17070 | ||
17071 | int bounds_offset = -1; | |
17072 | int max_align = -1; | |
17073 | std::vector<struct field> range_fields; | |
17074 | for (struct die_info *child_die = die->child; | |
17075 | child_die; | |
17076 | child_die = child_die->sibling) | |
17077 | { | |
17078 | if (child_die->tag == DW_TAG_subrange_type) | |
17079 | { | |
17080 | struct type *underlying = read_subrange_index_type (child_die, cu); | |
17081 | ||
17082 | int this_align = type_align (underlying); | |
17083 | if (this_align > max_align) | |
17084 | max_align = this_align; | |
17085 | ||
17086 | range_fields.emplace_back (); | |
17087 | range_fields.emplace_back (); | |
17088 | ||
17089 | struct field &lower = range_fields[range_fields.size () - 2]; | |
17090 | struct field &upper = range_fields[range_fields.size () - 1]; | |
17091 | ||
17092 | lower.set_type (underlying); | |
17093 | FIELD_ARTIFICIAL (lower) = 1; | |
17094 | ||
17095 | upper.set_type (underlying); | |
17096 | FIELD_ARTIFICIAL (upper) = 1; | |
17097 | ||
17098 | if (!recognize_bound_expression (child_die, DW_AT_lower_bound, | |
17099 | &bounds_offset, &lower, cu) | |
17100 | || !recognize_bound_expression (child_die, DW_AT_upper_bound, | |
17101 | &bounds_offset, &upper, cu)) | |
17102 | return nullptr; | |
17103 | } | |
17104 | } | |
17105 | ||
17106 | /* This shouldn't really happen, but double-check that we found | |
17107 | where the bounds are stored. */ | |
17108 | if (bounds_offset == -1) | |
17109 | return nullptr; | |
17110 | ||
17111 | struct objfile *objfile = cu->per_objfile->objfile; | |
17112 | for (int i = 0; i < range_fields.size (); i += 2) | |
17113 | { | |
17114 | char name[20]; | |
17115 | ||
17116 | /* Set the name of each field in the bounds. */ | |
17117 | xsnprintf (name, sizeof (name), "LB%d", i / 2); | |
17118 | FIELD_NAME (range_fields[i]) = objfile->intern (name); | |
17119 | xsnprintf (name, sizeof (name), "UB%d", i / 2); | |
17120 | FIELD_NAME (range_fields[i + 1]) = objfile->intern (name); | |
17121 | } | |
17122 | ||
17123 | struct type *bounds = alloc_type (objfile); | |
17124 | bounds->set_code (TYPE_CODE_STRUCT); | |
17125 | ||
17126 | bounds->set_num_fields (range_fields.size ()); | |
17127 | bounds->set_fields | |
17128 | ((struct field *) TYPE_ALLOC (bounds, (bounds->num_fields () | |
17129 | * sizeof (struct field)))); | |
17130 | memcpy (bounds->fields (), range_fields.data (), | |
17131 | bounds->num_fields () * sizeof (struct field)); | |
17132 | ||
17133 | int last_fieldno = range_fields.size () - 1; | |
17134 | int bounds_size = (TYPE_FIELD_BITPOS (bounds, last_fieldno) / 8 | |
17135 | + TYPE_LENGTH (bounds->field (last_fieldno).type ())); | |
17136 | TYPE_LENGTH (bounds) = align_up (bounds_size, max_align); | |
17137 | ||
17138 | /* Rewrite the existing array type in place. Specifically, we | |
17139 | remove any dynamic properties we might have read, and we replace | |
17140 | the index types. */ | |
17141 | struct type *iter = type; | |
17142 | for (int i = 0; i < range_fields.size (); i += 2) | |
17143 | { | |
17144 | gdb_assert (iter->code () == TYPE_CODE_ARRAY); | |
17145 | iter->main_type->dyn_prop_list = nullptr; | |
17146 | iter->set_index_type | |
17147 | (create_static_range_type (NULL, bounds->field (i).type (), 1, 0)); | |
17148 | iter = TYPE_TARGET_TYPE (iter); | |
17149 | } | |
17150 | ||
17151 | struct type *result = alloc_type (objfile); | |
17152 | result->set_code (TYPE_CODE_STRUCT); | |
17153 | ||
17154 | result->set_num_fields (2); | |
17155 | result->set_fields | |
17156 | ((struct field *) TYPE_ZALLOC (result, (result->num_fields () | |
17157 | * sizeof (struct field)))); | |
17158 | ||
17159 | /* The names are chosen to coincide with what the compiler does with | |
17160 | -fgnat-encodings=all, which the Ada code in gdb already | |
17161 | understands. */ | |
17162 | TYPE_FIELD_NAME (result, 0) = "P_ARRAY"; | |
17163 | result->field (0).set_type (lookup_pointer_type (type)); | |
17164 | ||
17165 | TYPE_FIELD_NAME (result, 1) = "P_BOUNDS"; | |
17166 | result->field (1).set_type (lookup_pointer_type (bounds)); | |
17167 | SET_FIELD_BITPOS (result->field (1), 8 * bounds_offset); | |
17168 | ||
17169 | result->set_name (type->name ()); | |
17170 | TYPE_LENGTH (result) = (TYPE_LENGTH (result->field (0).type ()) | |
17171 | + TYPE_LENGTH (result->field (1).type ())); | |
17172 | ||
17173 | return result; | |
17174 | } | |
17175 | ||
c906108c SS |
17176 | /* Extract all information from a DW_TAG_array_type DIE and put it in |
17177 | the DIE's type field. For now, this only handles one dimensional | |
17178 | arrays. */ | |
17179 | ||
f792889a | 17180 | static struct type * |
e7c27a73 | 17181 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17182 | { |
5e22e966 | 17183 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 17184 | struct die_info *child_die; |
7e314c57 | 17185 | struct type *type; |
c906108c | 17186 | struct type *element_type, *range_type, *index_type; |
c906108c | 17187 | struct attribute *attr; |
15d034d0 | 17188 | const char *name; |
a405673c | 17189 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 17190 | unsigned int bit_stride = 0; |
c906108c | 17191 | |
e7c27a73 | 17192 | element_type = die_type (die, cu); |
c906108c | 17193 | |
7e314c57 JK |
17194 | /* The die_type call above may have already set the type for this DIE. */ |
17195 | type = get_die_type (die, cu); | |
17196 | if (type) | |
17197 | return type; | |
17198 | ||
dc53a7ad JB |
17199 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
17200 | if (attr != NULL) | |
a405673c JB |
17201 | { |
17202 | int stride_ok; | |
293e7e51 | 17203 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
17204 | |
17205 | byte_stride_prop | |
17206 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
17207 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
17208 | prop_type); | |
a405673c JB |
17209 | if (!stride_ok) |
17210 | { | |
b98664d3 | 17211 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
17212 | " - DIE at %s [in module %s]"), |
17213 | sect_offset_str (die->sect_off), | |
5e22e966 | 17214 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
17215 | /* Ignore this attribute. We will likely not be able to print |
17216 | arrays of this type correctly, but there is little we can do | |
17217 | to help if we cannot read the attribute's value. */ | |
17218 | byte_stride_prop = NULL; | |
17219 | } | |
17220 | } | |
dc53a7ad JB |
17221 | |
17222 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17223 | if (attr != NULL) | |
529908cb | 17224 | bit_stride = attr->constant_value (0); |
dc53a7ad | 17225 | |
c906108c SS |
17226 | /* Irix 6.2 native cc creates array types without children for |
17227 | arrays with unspecified length. */ | |
639d11d3 | 17228 | if (die->child == NULL) |
c906108c | 17229 | { |
46bf5051 | 17230 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17231 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 17232 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 17233 | byte_stride_prop, bit_stride); |
f792889a | 17234 | return set_die_type (die, type, cu); |
c906108c SS |
17235 | } |
17236 | ||
791afaa2 | 17237 | std::vector<struct type *> range_types; |
639d11d3 | 17238 | child_die = die->child; |
c906108c SS |
17239 | while (child_die && child_die->tag) |
17240 | { | |
17241 | if (child_die->tag == DW_TAG_subrange_type) | |
17242 | { | |
f792889a | 17243 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 17244 | |
dda83cd7 SM |
17245 | if (child_type != NULL) |
17246 | { | |
0963b4bd | 17247 | /* The range type was succesfully read. Save it for the |
dda83cd7 | 17248 | array type creation. */ |
791afaa2 | 17249 | range_types.push_back (child_type); |
dda83cd7 | 17250 | } |
c906108c | 17251 | } |
436c571c | 17252 | child_die = child_die->sibling; |
c906108c SS |
17253 | } |
17254 | ||
cf2b2075 TV |
17255 | if (range_types.empty ()) |
17256 | { | |
17257 | complaint (_("unable to find array range - DIE at %s [in module %s]"), | |
17258 | sect_offset_str (die->sect_off), | |
17259 | objfile_name (cu->per_objfile->objfile)); | |
17260 | return NULL; | |
17261 | } | |
17262 | ||
c906108c SS |
17263 | /* Dwarf2 dimensions are output from left to right, create the |
17264 | necessary array types in backwards order. */ | |
7ca2d3a3 | 17265 | |
c906108c | 17266 | type = element_type; |
7ca2d3a3 DL |
17267 | |
17268 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
17269 | { | |
17270 | int i = 0; | |
9a619af0 | 17271 | |
791afaa2 | 17272 | while (i < range_types.size ()) |
10f6a3ad TT |
17273 | { |
17274 | type = create_array_type_with_stride (NULL, type, range_types[i++], | |
17275 | byte_stride_prop, bit_stride); | |
17276 | bit_stride = 0; | |
17277 | byte_stride_prop = nullptr; | |
17278 | } | |
7ca2d3a3 DL |
17279 | } |
17280 | else | |
17281 | { | |
791afaa2 | 17282 | size_t ndim = range_types.size (); |
7ca2d3a3 | 17283 | while (ndim-- > 0) |
10f6a3ad TT |
17284 | { |
17285 | type = create_array_type_with_stride (NULL, type, range_types[ndim], | |
17286 | byte_stride_prop, bit_stride); | |
17287 | bit_stride = 0; | |
17288 | byte_stride_prop = nullptr; | |
17289 | } | |
7ca2d3a3 | 17290 | } |
c906108c | 17291 | |
cf2b2075 TV |
17292 | gdb_assert (type != element_type); |
17293 | ||
f5f8a009 EZ |
17294 | /* Understand Dwarf2 support for vector types (like they occur on |
17295 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
17296 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
17297 | custom vendor extension. The main difference between a regular | |
17298 | array and the vector variant is that vectors are passed by value | |
17299 | to functions. */ | |
e142c38c | 17300 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 17301 | if (attr != nullptr) |
ea37ba09 | 17302 | make_vector_type (type); |
f5f8a009 | 17303 | |
dbc98a8b KW |
17304 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
17305 | implementation may choose to implement triple vectors using this | |
17306 | attribute. */ | |
17307 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb | 17308 | if (attr != nullptr && attr->form_is_unsigned ()) |
dbc98a8b | 17309 | { |
529908cb TT |
17310 | if (attr->as_unsigned () >= TYPE_LENGTH (type)) |
17311 | TYPE_LENGTH (type) = attr->as_unsigned (); | |
dbc98a8b | 17312 | else |
b98664d3 | 17313 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 17314 | "than the total size of elements")); |
dbc98a8b KW |
17315 | } |
17316 | ||
39cbfefa DJ |
17317 | name = dwarf2_name (die, cu); |
17318 | if (name) | |
d0e39ea2 | 17319 | type->set_name (name); |
6e70227d | 17320 | |
2b4424c3 TT |
17321 | maybe_set_alignment (cu, die, type); |
17322 | ||
57567375 TT |
17323 | struct type *replacement_type = nullptr; |
17324 | if (cu->language == language_ada) | |
17325 | { | |
17326 | replacement_type = quirk_ada_thick_pointer (die, cu, type); | |
17327 | if (replacement_type != nullptr) | |
17328 | type = replacement_type; | |
17329 | } | |
17330 | ||
0963b4bd | 17331 | /* Install the type in the die. */ |
57567375 | 17332 | set_die_type (die, type, cu, replacement_type != nullptr); |
7e314c57 JK |
17333 | |
17334 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17335 | set_descriptive_type (type, die, cu); |
17336 | ||
7e314c57 | 17337 | return type; |
c906108c SS |
17338 | } |
17339 | ||
7ca2d3a3 | 17340 | static enum dwarf_array_dim_ordering |
6e70227d | 17341 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
17342 | { |
17343 | struct attribute *attr; | |
17344 | ||
17345 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
17346 | ||
435d3d88 | 17347 | if (attr != nullptr) |
1bc397c5 TT |
17348 | { |
17349 | LONGEST val = attr->constant_value (-1); | |
17350 | if (val == DW_ORD_row_major || val == DW_ORD_col_major) | |
17351 | return (enum dwarf_array_dim_ordering) val; | |
17352 | } | |
7ca2d3a3 | 17353 | |
0963b4bd MS |
17354 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
17355 | opposite order to the dwarf2 specification, but data is still | |
17356 | laid out as per normal fortran. | |
7ca2d3a3 | 17357 | |
0963b4bd MS |
17358 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
17359 | version checking. */ | |
7ca2d3a3 | 17360 | |
905e0470 PM |
17361 | if (cu->language == language_fortran |
17362 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
17363 | { |
17364 | return DW_ORD_row_major; | |
17365 | } | |
17366 | ||
3a3440fb | 17367 | switch (cu->language_defn->array_ordering ()) |
7ca2d3a3 DL |
17368 | { |
17369 | case array_column_major: | |
17370 | return DW_ORD_col_major; | |
17371 | case array_row_major: | |
17372 | default: | |
17373 | return DW_ORD_row_major; | |
17374 | }; | |
17375 | } | |
17376 | ||
72019c9c | 17377 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 17378 | the DIE's type field. */ |
72019c9c | 17379 | |
f792889a | 17380 | static struct type * |
72019c9c GM |
17381 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
17382 | { | |
7e314c57 JK |
17383 | struct type *domain_type, *set_type; |
17384 | struct attribute *attr; | |
f792889a | 17385 | |
7e314c57 JK |
17386 | domain_type = die_type (die, cu); |
17387 | ||
17388 | /* The die_type call above may have already set the type for this DIE. */ | |
17389 | set_type = get_die_type (die, cu); | |
17390 | if (set_type) | |
17391 | return set_type; | |
17392 | ||
17393 | set_type = create_set_type (NULL, domain_type); | |
17394 | ||
17395 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb TT |
17396 | if (attr != nullptr && attr->form_is_unsigned ()) |
17397 | TYPE_LENGTH (set_type) = attr->as_unsigned (); | |
7e314c57 | 17398 | |
2b4424c3 TT |
17399 | maybe_set_alignment (cu, die, set_type); |
17400 | ||
f792889a | 17401 | return set_die_type (die, set_type, cu); |
72019c9c | 17402 | } |
7ca2d3a3 | 17403 | |
0971de02 TT |
17404 | /* A helper for read_common_block that creates a locexpr baton. |
17405 | SYM is the symbol which we are marking as computed. | |
17406 | COMMON_DIE is the DIE for the common block. | |
17407 | COMMON_LOC is the location expression attribute for the common | |
17408 | block itself. | |
17409 | MEMBER_LOC is the location expression attribute for the particular | |
17410 | member of the common block that we are processing. | |
17411 | CU is the CU from which the above come. */ | |
17412 | ||
17413 | static void | |
17414 | mark_common_block_symbol_computed (struct symbol *sym, | |
17415 | struct die_info *common_die, | |
17416 | struct attribute *common_loc, | |
17417 | struct attribute *member_loc, | |
17418 | struct dwarf2_cu *cu) | |
17419 | { | |
5e22e966 | 17420 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 17421 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
17422 | struct dwarf2_locexpr_baton *baton; |
17423 | gdb_byte *ptr; | |
17424 | unsigned int cu_off; | |
08feed99 | 17425 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
17426 | LONGEST offset = 0; |
17427 | ||
17428 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
17429 | gdb_assert (common_loc->form_is_block ()); |
17430 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 17431 | || member_loc->form_is_constant ()); |
0971de02 | 17432 | |
8d749320 | 17433 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 17434 | baton->per_objfile = per_objfile; |
0971de02 TT |
17435 | baton->per_cu = cu->per_cu; |
17436 | gdb_assert (baton->per_cu); | |
17437 | ||
17438 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
17439 | ||
cd6c91b4 | 17440 | if (member_loc->form_is_constant ()) |
0971de02 | 17441 | { |
0826b30a | 17442 | offset = member_loc->constant_value (0); |
0971de02 TT |
17443 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
17444 | } | |
17445 | else | |
9d2246fc | 17446 | baton->size += member_loc->as_block ()->size; |
0971de02 | 17447 | |
224c3ddb | 17448 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
17449 | baton->data = ptr; |
17450 | ||
17451 | *ptr++ = DW_OP_call4; | |
9c541725 | 17452 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
17453 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
17454 | ptr += 4; | |
17455 | ||
cd6c91b4 | 17456 | if (member_loc->form_is_constant ()) |
0971de02 TT |
17457 | { |
17458 | *ptr++ = DW_OP_addr; | |
17459 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
17460 | ptr += cu->header.addr_size; | |
17461 | } | |
17462 | else | |
17463 | { | |
17464 | /* We have to copy the data here, because DW_OP_call4 will only | |
17465 | use a DW_AT_location attribute. */ | |
9d2246fc TT |
17466 | struct dwarf_block *block = member_loc->as_block (); |
17467 | memcpy (ptr, block->data, block->size); | |
17468 | ptr += block->size; | |
0971de02 TT |
17469 | } |
17470 | ||
17471 | *ptr++ = DW_OP_plus; | |
17472 | gdb_assert (ptr - baton->data == baton->size); | |
17473 | ||
0971de02 | 17474 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17475 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
17476 | } |
17477 | ||
4357ac6c TT |
17478 | /* Create appropriate locally-scoped variables for all the |
17479 | DW_TAG_common_block entries. Also create a struct common_block | |
17480 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 17481 | is used to separate the common blocks name namespace from regular |
4357ac6c | 17482 | variable names. */ |
c906108c SS |
17483 | |
17484 | static void | |
e7c27a73 | 17485 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17486 | { |
0971de02 TT |
17487 | struct attribute *attr; |
17488 | ||
17489 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 17490 | if (attr != nullptr) |
0971de02 TT |
17491 | { |
17492 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 17493 | if (attr->form_is_block ()) |
dda83cd7 | 17494 | { |
0971de02 | 17495 | /* Ok. */ |
dda83cd7 | 17496 | } |
cd6c91b4 | 17497 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 17498 | { |
0971de02 TT |
17499 | dwarf2_complex_location_expr_complaint (); |
17500 | attr = NULL; | |
dda83cd7 | 17501 | } |
0971de02 | 17502 | else |
dda83cd7 | 17503 | { |
0971de02 TT |
17504 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17505 | "common block member"); | |
17506 | attr = NULL; | |
dda83cd7 | 17507 | } |
0971de02 TT |
17508 | } |
17509 | ||
639d11d3 | 17510 | if (die->child != NULL) |
c906108c | 17511 | { |
5e22e966 | 17512 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
17513 | struct die_info *child_die; |
17514 | size_t n_entries = 0, size; | |
17515 | struct common_block *common_block; | |
17516 | struct symbol *sym; | |
74ac6d43 | 17517 | |
4357ac6c TT |
17518 | for (child_die = die->child; |
17519 | child_die && child_die->tag; | |
436c571c | 17520 | child_die = child_die->sibling) |
4357ac6c TT |
17521 | ++n_entries; |
17522 | ||
17523 | size = (sizeof (struct common_block) | |
17524 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17525 | common_block |
17526 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17527 | size); | |
4357ac6c TT |
17528 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17529 | common_block->n_entries = 0; | |
17530 | ||
17531 | for (child_die = die->child; | |
17532 | child_die && child_die->tag; | |
436c571c | 17533 | child_die = child_die->sibling) |
4357ac6c TT |
17534 | { |
17535 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17536 | symbol scope. */ | |
e7c27a73 | 17537 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17538 | if (sym != NULL) |
17539 | { | |
17540 | struct attribute *member_loc; | |
17541 | ||
17542 | common_block->contents[common_block->n_entries++] = sym; | |
17543 | ||
17544 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17545 | cu); | |
17546 | if (member_loc) | |
17547 | { | |
17548 | /* GDB has handled this for a long time, but it is | |
17549 | not specified by DWARF. It seems to have been | |
17550 | emitted by gfortran at least as recently as: | |
17551 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 17552 | complaint (_("Variable in common block has " |
0971de02 | 17553 | "DW_AT_data_member_location " |
9d8780f0 SM |
17554 | "- DIE at %s [in module %s]"), |
17555 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17556 | objfile_name (objfile)); |
0971de02 | 17557 | |
cd6c91b4 | 17558 | if (member_loc->form_is_section_offset ()) |
0971de02 | 17559 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 17560 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 17561 | || member_loc->form_is_block ()) |
0971de02 | 17562 | { |
435d3d88 | 17563 | if (attr != nullptr) |
0971de02 TT |
17564 | mark_common_block_symbol_computed (sym, die, attr, |
17565 | member_loc, cu); | |
17566 | } | |
17567 | else | |
17568 | dwarf2_complex_location_expr_complaint (); | |
17569 | } | |
17570 | } | |
c906108c | 17571 | } |
4357ac6c TT |
17572 | |
17573 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17574 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17575 | } |
17576 | } | |
17577 | ||
0114d602 | 17578 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17579 | |
0114d602 DJ |
17580 | static struct type * |
17581 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17582 | { |
5e22e966 | 17583 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17584 | const char *previous_prefix, *name; |
9219021c | 17585 | int is_anonymous; |
0114d602 DJ |
17586 | struct type *type; |
17587 | ||
17588 | /* For extensions, reuse the type of the original namespace. */ | |
17589 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17590 | { | |
17591 | struct die_info *ext_die; | |
17592 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17593 | |
0114d602 DJ |
17594 | ext_die = dwarf2_extension (die, &ext_cu); |
17595 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17596 | |
17597 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17598 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17599 | return set_die_type (die, type, cu); |
17600 | } | |
9219021c | 17601 | |
e142c38c | 17602 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17603 | |
17604 | /* Now build the name of the current namespace. */ | |
17605 | ||
0114d602 DJ |
17606 | previous_prefix = determine_prefix (die, cu); |
17607 | if (previous_prefix[0] != '\0') | |
17608 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17609 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17610 | |
17611 | /* Create the type. */ | |
19f392bc | 17612 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 17613 | |
60531b24 | 17614 | return set_die_type (die, type, cu); |
0114d602 DJ |
17615 | } |
17616 | ||
22cee43f | 17617 | /* Read a namespace scope. */ |
0114d602 DJ |
17618 | |
17619 | static void | |
17620 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17621 | { | |
5e22e966 | 17622 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17623 | int is_anonymous; |
9219021c | 17624 | |
5c4e30ca DC |
17625 | /* Add a symbol associated to this if we haven't seen the namespace |
17626 | before. Also, add a using directive if it's an anonymous | |
17627 | namespace. */ | |
9219021c | 17628 | |
f2f0e013 | 17629 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17630 | { |
17631 | struct type *type; | |
17632 | ||
0114d602 | 17633 | type = read_type_die (die, cu); |
e7c27a73 | 17634 | new_symbol (die, type, cu); |
5c4e30ca | 17635 | |
e8e80198 | 17636 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17637 | if (is_anonymous) |
0114d602 DJ |
17638 | { |
17639 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17640 | |
eb1e02fd | 17641 | std::vector<const char *> excludes; |
804d2729 | 17642 | add_using_directive (using_directives (cu), |
7d93a1e0 | 17643 | previous_prefix, type->name (), NULL, |
eb1e02fd | 17644 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17645 | } |
5c4e30ca | 17646 | } |
9219021c | 17647 | |
639d11d3 | 17648 | if (die->child != NULL) |
d9fa45fe | 17649 | { |
639d11d3 | 17650 | struct die_info *child_die = die->child; |
6e70227d | 17651 | |
d9fa45fe DC |
17652 | while (child_die && child_die->tag) |
17653 | { | |
e7c27a73 | 17654 | process_die (child_die, cu); |
436c571c | 17655 | child_die = child_die->sibling; |
d9fa45fe DC |
17656 | } |
17657 | } | |
38d518c9 EZ |
17658 | } |
17659 | ||
f55ee35c JK |
17660 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17661 | imported module. Still we need that type as local Fortran "use ... only" | |
17662 | declaration imports depend on the created type in determine_prefix. */ | |
17663 | ||
17664 | static struct type * | |
17665 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17666 | { | |
5e22e966 | 17667 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 17668 | const char *module_name; |
f55ee35c JK |
17669 | struct type *type; |
17670 | ||
17671 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17672 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17673 | |
f55ee35c JK |
17674 | return set_die_type (die, type, cu); |
17675 | } | |
17676 | ||
5d7cb8df JK |
17677 | /* Read a Fortran module. */ |
17678 | ||
17679 | static void | |
17680 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17681 | { | |
17682 | struct die_info *child_die = die->child; | |
530e8392 KB |
17683 | struct type *type; |
17684 | ||
17685 | type = read_type_die (die, cu); | |
17686 | new_symbol (die, type, cu); | |
5d7cb8df | 17687 | |
5d7cb8df JK |
17688 | while (child_die && child_die->tag) |
17689 | { | |
17690 | process_die (child_die, cu); | |
436c571c | 17691 | child_die = child_die->sibling; |
5d7cb8df JK |
17692 | } |
17693 | } | |
17694 | ||
38d518c9 EZ |
17695 | /* Return the name of the namespace represented by DIE. Set |
17696 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17697 | namespace. */ | |
17698 | ||
17699 | static const char * | |
e142c38c | 17700 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17701 | { |
17702 | struct die_info *current_die; | |
17703 | const char *name = NULL; | |
17704 | ||
17705 | /* Loop through the extensions until we find a name. */ | |
17706 | ||
17707 | for (current_die = die; | |
17708 | current_die != NULL; | |
f2f0e013 | 17709 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17710 | { |
96553a0c DE |
17711 | /* We don't use dwarf2_name here so that we can detect the absence |
17712 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17713 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17714 | |
38d518c9 EZ |
17715 | if (name != NULL) |
17716 | break; | |
17717 | } | |
17718 | ||
17719 | /* Is it an anonymous namespace? */ | |
17720 | ||
17721 | *is_anonymous = (name == NULL); | |
17722 | if (*is_anonymous) | |
2b1dbab0 | 17723 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17724 | |
17725 | return name; | |
d9fa45fe DC |
17726 | } |
17727 | ||
c906108c SS |
17728 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17729 | the user defined type vector. */ | |
17730 | ||
f792889a | 17731 | static struct type * |
e7c27a73 | 17732 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17733 | { |
5e22e966 | 17734 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 17735 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17736 | struct type *type; |
8b2dbe47 KB |
17737 | struct attribute *attr_byte_size; |
17738 | struct attribute *attr_address_class; | |
17739 | int byte_size, addr_class; | |
7e314c57 JK |
17740 | struct type *target_type; |
17741 | ||
17742 | target_type = die_type (die, cu); | |
c906108c | 17743 | |
7e314c57 JK |
17744 | /* The die_type call above may have already set the type for this DIE. */ |
17745 | type = get_die_type (die, cu); | |
17746 | if (type) | |
17747 | return type; | |
17748 | ||
17749 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17750 | |
e142c38c | 17751 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 | 17752 | if (attr_byte_size) |
529908cb | 17753 | byte_size = attr_byte_size->constant_value (cu_header->addr_size); |
c906108c | 17754 | else |
8b2dbe47 KB |
17755 | byte_size = cu_header->addr_size; |
17756 | ||
e142c38c | 17757 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 | 17758 | if (attr_address_class) |
529908cb | 17759 | addr_class = attr_address_class->constant_value (DW_ADDR_none); |
8b2dbe47 KB |
17760 | else |
17761 | addr_class = DW_ADDR_none; | |
17762 | ||
2b4424c3 TT |
17763 | ULONGEST alignment = get_alignment (cu, die); |
17764 | ||
17765 | /* If the pointer size, alignment, or address class is different | |
17766 | than the default, create a type variant marked as such and set | |
17767 | the length accordingly. */ | |
17768 | if (TYPE_LENGTH (type) != byte_size | |
17769 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17770 | && alignment != TYPE_RAW_ALIGN (type)) | |
17771 | || addr_class != DW_ADDR_none) | |
c906108c | 17772 | { |
5e2b427d | 17773 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 | 17774 | { |
314ad88d PA |
17775 | type_instance_flags type_flags |
17776 | = gdbarch_address_class_type_flags (gdbarch, byte_size, | |
17777 | addr_class); | |
876cecd0 TT |
17778 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17779 | == 0); | |
8b2dbe47 KB |
17780 | type = make_type_with_address_space (type, type_flags); |
17781 | } | |
17782 | else if (TYPE_LENGTH (type) != byte_size) | |
17783 | { | |
b98664d3 | 17784 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17785 | } |
2b4424c3 TT |
17786 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17787 | { | |
b98664d3 | 17788 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17789 | " - DIE at %s [in module %s]"), |
17790 | sect_offset_str (die->sect_off), | |
5e22e966 | 17791 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 17792 | } |
6e70227d | 17793 | else |
9a619af0 MS |
17794 | { |
17795 | /* Should we also complain about unhandled address classes? */ | |
17796 | } | |
c906108c | 17797 | } |
8b2dbe47 KB |
17798 | |
17799 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17800 | set_type_align (type, alignment); |
f792889a | 17801 | return set_die_type (die, type, cu); |
c906108c SS |
17802 | } |
17803 | ||
17804 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17805 | the user defined type vector. */ | |
17806 | ||
f792889a | 17807 | static struct type * |
e7c27a73 | 17808 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17809 | { |
17810 | struct type *type; | |
17811 | struct type *to_type; | |
17812 | struct type *domain; | |
17813 | ||
e7c27a73 DJ |
17814 | to_type = die_type (die, cu); |
17815 | domain = die_containing_type (die, cu); | |
0d5de010 | 17816 | |
7e314c57 JK |
17817 | /* The calls above may have already set the type for this DIE. */ |
17818 | type = get_die_type (die, cu); | |
17819 | if (type) | |
17820 | return type; | |
17821 | ||
78134374 | 17822 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 17823 | type = lookup_methodptr_type (to_type); |
78134374 | 17824 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 17825 | { |
5e22e966 | 17826 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
17827 | |
17828 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 17829 | to_type->fields (), to_type->num_fields (), |
a409645d | 17830 | to_type->has_varargs ()); |
7078baeb TT |
17831 | type = lookup_methodptr_type (new_type); |
17832 | } | |
0d5de010 DJ |
17833 | else |
17834 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17835 | |
f792889a | 17836 | return set_die_type (die, type, cu); |
c906108c SS |
17837 | } |
17838 | ||
4297a3f0 | 17839 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17840 | the user defined type vector. */ |
17841 | ||
f792889a | 17842 | static struct type * |
4297a3f0 | 17843 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
dda83cd7 | 17844 | enum type_code refcode) |
c906108c | 17845 | { |
e7c27a73 | 17846 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17847 | struct type *type, *target_type; |
c906108c SS |
17848 | struct attribute *attr; |
17849 | ||
4297a3f0 AV |
17850 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17851 | ||
7e314c57 JK |
17852 | target_type = die_type (die, cu); |
17853 | ||
17854 | /* The die_type call above may have already set the type for this DIE. */ | |
17855 | type = get_die_type (die, cu); | |
17856 | if (type) | |
17857 | return type; | |
17858 | ||
4297a3f0 | 17859 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17860 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17861 | if (attr != nullptr) |
c906108c | 17862 | { |
529908cb | 17863 | TYPE_LENGTH (type) = attr->constant_value (cu_header->addr_size); |
c906108c SS |
17864 | } |
17865 | else | |
17866 | { | |
107d2387 | 17867 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17868 | } |
2b4424c3 | 17869 | maybe_set_alignment (cu, die, type); |
f792889a | 17870 | return set_die_type (die, type, cu); |
c906108c SS |
17871 | } |
17872 | ||
cf363f18 MW |
17873 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17874 | outputs DWARF type qualifiers that apply to an array, not the | |
17875 | element type. But GDB relies on the array element type to carry | |
17876 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17877 | specification. */ | |
17878 | ||
17879 | static struct type * | |
17880 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17881 | struct type *base_type, int cnst, int voltl) | |
17882 | { | |
17883 | struct type *el_type, *inner_array; | |
17884 | ||
17885 | base_type = copy_type (base_type); | |
17886 | inner_array = base_type; | |
17887 | ||
78134374 | 17888 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17889 | { |
17890 | TYPE_TARGET_TYPE (inner_array) = | |
17891 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17892 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17893 | } | |
17894 | ||
17895 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17896 | cnst |= TYPE_CONST (el_type); | |
17897 | voltl |= TYPE_VOLATILE (el_type); | |
17898 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17899 | ||
17900 | return set_die_type (die, base_type, cu); | |
17901 | } | |
17902 | ||
f792889a | 17903 | static struct type * |
e7c27a73 | 17904 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17905 | { |
f792889a | 17906 | struct type *base_type, *cv_type; |
c906108c | 17907 | |
e7c27a73 | 17908 | base_type = die_type (die, cu); |
7e314c57 JK |
17909 | |
17910 | /* The die_type call above may have already set the type for this DIE. */ | |
17911 | cv_type = get_die_type (die, cu); | |
17912 | if (cv_type) | |
17913 | return cv_type; | |
17914 | ||
2f608a3a KW |
17915 | /* In case the const qualifier is applied to an array type, the element type |
17916 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 17917 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 17918 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17919 | |
f792889a DJ |
17920 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17921 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17922 | } |
17923 | ||
f792889a | 17924 | static struct type * |
e7c27a73 | 17925 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17926 | { |
f792889a | 17927 | struct type *base_type, *cv_type; |
c906108c | 17928 | |
e7c27a73 | 17929 | base_type = die_type (die, cu); |
7e314c57 JK |
17930 | |
17931 | /* The die_type call above may have already set the type for this DIE. */ | |
17932 | cv_type = get_die_type (die, cu); | |
17933 | if (cv_type) | |
17934 | return cv_type; | |
17935 | ||
cf363f18 MW |
17936 | /* In case the volatile qualifier is applied to an array type, the |
17937 | element type is so qualified, not the array type (section 6.7.3 | |
17938 | of C99). */ | |
78134374 | 17939 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17940 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17941 | ||
f792889a DJ |
17942 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17943 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17944 | } |
17945 | ||
06d66ee9 TT |
17946 | /* Handle DW_TAG_restrict_type. */ |
17947 | ||
17948 | static struct type * | |
17949 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17950 | { | |
17951 | struct type *base_type, *cv_type; | |
17952 | ||
17953 | base_type = die_type (die, cu); | |
17954 | ||
17955 | /* The die_type call above may have already set the type for this DIE. */ | |
17956 | cv_type = get_die_type (die, cu); | |
17957 | if (cv_type) | |
17958 | return cv_type; | |
17959 | ||
17960 | cv_type = make_restrict_type (base_type); | |
17961 | return set_die_type (die, cv_type, cu); | |
17962 | } | |
17963 | ||
a2c2acaf MW |
17964 | /* Handle DW_TAG_atomic_type. */ |
17965 | ||
17966 | static struct type * | |
17967 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17968 | { | |
17969 | struct type *base_type, *cv_type; | |
17970 | ||
17971 | base_type = die_type (die, cu); | |
17972 | ||
17973 | /* The die_type call above may have already set the type for this DIE. */ | |
17974 | cv_type = get_die_type (die, cu); | |
17975 | if (cv_type) | |
17976 | return cv_type; | |
17977 | ||
17978 | cv_type = make_atomic_type (base_type); | |
17979 | return set_die_type (die, cv_type, cu); | |
17980 | } | |
17981 | ||
c906108c SS |
17982 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17983 | the user defined type vector. It isn't really a user defined type, | |
17984 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17985 | attribute to reference it. */ | |
17986 | ||
f792889a | 17987 | static struct type * |
e7c27a73 | 17988 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17989 | { |
5e22e966 | 17990 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17991 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17992 | struct type *type, *range_type, *index_type, *char_type; |
17993 | struct attribute *attr; | |
216a7e6b AB |
17994 | struct dynamic_prop prop; |
17995 | bool length_is_constant = true; | |
17996 | LONGEST length; | |
17997 | ||
17998 | /* There are a couple of places where bit sizes might be made use of | |
17999 | when parsing a DW_TAG_string_type, however, no producer that we know | |
18000 | of make use of these. Handling bit sizes that are a multiple of the | |
18001 | byte size is easy enough, but what about other bit sizes? Lets deal | |
18002 | with that problem when we have to. Warn about these attributes being | |
18003 | unsupported, then parse the type and ignore them like we always | |
18004 | have. */ | |
18005 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
18006 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
18007 | { | |
18008 | static bool warning_printed = false; | |
18009 | if (!warning_printed) | |
18010 | { | |
18011 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
18012 | "currently supported on DW_TAG_string_type.")); | |
18013 | warning_printed = true; | |
18014 | } | |
18015 | } | |
c906108c | 18016 | |
e142c38c | 18017 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 18018 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
18019 | { |
18020 | /* The string length describes the location at which the length of | |
18021 | the string can be found. The size of the length field can be | |
18022 | specified with one of the attributes below. */ | |
18023 | struct type *prop_type; | |
18024 | struct attribute *len | |
18025 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
18026 | if (len == nullptr) | |
18027 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 18028 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
18029 | { |
18030 | /* Pass 0 as the default as we know this attribute is constant | |
18031 | and the default value will not be returned. */ | |
0826b30a | 18032 | LONGEST sz = len->constant_value (0); |
293e7e51 | 18033 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
18034 | } |
18035 | else | |
18036 | { | |
18037 | /* If the size is not specified then we assume it is the size of | |
18038 | an address on this target. */ | |
293e7e51 | 18039 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
18040 | } |
18041 | ||
18042 | /* Convert the attribute into a dynamic property. */ | |
18043 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
18044 | length = 1; | |
18045 | else | |
18046 | length_is_constant = false; | |
18047 | } | |
18048 | else if (attr != nullptr) | |
18049 | { | |
18050 | /* This DW_AT_string_length just contains the length with no | |
18051 | indirection. There's no need to create a dynamic property in this | |
18052 | case. Pass 0 for the default value as we know it will not be | |
18053 | returned in this case. */ | |
0826b30a | 18054 | length = attr->constant_value (0); |
216a7e6b AB |
18055 | } |
18056 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 18057 | { |
216a7e6b | 18058 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 18059 | length = attr->constant_value (1); |
c906108c SS |
18060 | } |
18061 | else | |
18062 | { | |
216a7e6b AB |
18063 | /* Use 1 as a fallback length if we have nothing else. */ |
18064 | length = 1; | |
c906108c | 18065 | } |
6ccb9162 | 18066 | |
46bf5051 | 18067 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
18068 | if (length_is_constant) |
18069 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
18070 | else | |
18071 | { | |
18072 | struct dynamic_prop low_bound; | |
18073 | ||
8c2e4e06 | 18074 | low_bound.set_const_val (1); |
216a7e6b AB |
18075 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); |
18076 | } | |
3b7538c0 UW |
18077 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
18078 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 18079 | |
f792889a | 18080 | return set_die_type (die, type, cu); |
c906108c SS |
18081 | } |
18082 | ||
4d804846 JB |
18083 | /* Assuming that DIE corresponds to a function, returns nonzero |
18084 | if the function is prototyped. */ | |
18085 | ||
18086 | static int | |
18087 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
18088 | { | |
18089 | struct attribute *attr; | |
18090 | ||
18091 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
c45bc3f8 | 18092 | if (attr && attr->as_boolean ()) |
4d804846 JB |
18093 | return 1; |
18094 | ||
18095 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 18096 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
18097 | languages that allow unprototyped functions (Eg: Objective C). |
18098 | For all other languages, assume that functions are always | |
18099 | prototyped. */ | |
18100 | if (cu->language != language_c | |
18101 | && cu->language != language_objc | |
18102 | && cu->language != language_opencl) | |
18103 | return 1; | |
18104 | ||
18105 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
18106 | prototyped and unprototyped functions; default to prototyped, | |
18107 | since that is more common in modern code (and RealView warns | |
18108 | about unprototyped functions). */ | |
18109 | if (producer_is_realview (cu->producer)) | |
18110 | return 1; | |
18111 | ||
18112 | return 0; | |
18113 | } | |
18114 | ||
c906108c SS |
18115 | /* Handle DIES due to C code like: |
18116 | ||
18117 | struct foo | |
c5aa993b JM |
18118 | { |
18119 | int (*funcp)(int a, long l); | |
18120 | int b; | |
18121 | }; | |
c906108c | 18122 | |
0963b4bd | 18123 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 18124 | |
f792889a | 18125 | static struct type * |
e7c27a73 | 18126 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18127 | { |
5e22e966 | 18128 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
18129 | struct type *type; /* Type that this function returns. */ |
18130 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
18131 | struct attribute *attr; |
18132 | ||
e7c27a73 | 18133 | type = die_type (die, cu); |
7e314c57 JK |
18134 | |
18135 | /* The die_type call above may have already set the type for this DIE. */ | |
18136 | ftype = get_die_type (die, cu); | |
18137 | if (ftype) | |
18138 | return ftype; | |
18139 | ||
0c8b41f1 | 18140 | ftype = lookup_function_type (type); |
c906108c | 18141 | |
4d804846 | 18142 | if (prototyped_function_p (die, cu)) |
27e69b7a | 18143 | ftype->set_is_prototyped (true); |
c906108c | 18144 | |
c055b101 CV |
18145 | /* Store the calling convention in the type if it's available in |
18146 | the subroutine die. Otherwise set the calling convention to | |
18147 | the default value DW_CC_normal. */ | |
18148 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf | 18149 | if (attr != nullptr |
529908cb | 18150 | && is_valid_DW_AT_calling_convention_for_subroutine (attr->constant_value (0))) |
d0922fcf | 18151 | TYPE_CALLING_CONVENTION (ftype) |
529908cb | 18152 | = (enum dwarf_calling_convention) attr->constant_value (0); |
54fcddd0 UW |
18153 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
18154 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
18155 | else | |
18156 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 18157 | |
743649fd MW |
18158 | /* Record whether the function returns normally to its caller or not |
18159 | if the DWARF producer set that information. */ | |
18160 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
c45bc3f8 | 18161 | if (attr && attr->as_boolean ()) |
743649fd MW |
18162 | TYPE_NO_RETURN (ftype) = 1; |
18163 | ||
76c10ea2 GM |
18164 | /* We need to add the subroutine type to the die immediately so |
18165 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 18166 | declared as the same subroutine type. */ |
76c10ea2 | 18167 | set_die_type (die, ftype, cu); |
6e70227d | 18168 | |
639d11d3 | 18169 | if (die->child != NULL) |
c906108c | 18170 | { |
bb5ed363 | 18171 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 18172 | struct die_info *child_die; |
8072405b | 18173 | int nparams, iparams; |
c906108c SS |
18174 | |
18175 | /* Count the number of parameters. | |
dda83cd7 SM |
18176 | FIXME: GDB currently ignores vararg functions, but knows about |
18177 | vararg member functions. */ | |
8072405b | 18178 | nparams = 0; |
639d11d3 | 18179 | child_die = die->child; |
c906108c SS |
18180 | while (child_die && child_die->tag) |
18181 | { | |
18182 | if (child_die->tag == DW_TAG_formal_parameter) | |
18183 | nparams++; | |
18184 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
1d6286ed SM |
18185 | ftype->set_has_varargs (true); |
18186 | ||
436c571c | 18187 | child_die = child_die->sibling; |
c906108c SS |
18188 | } |
18189 | ||
18190 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 18191 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
18192 | ftype->set_fields |
18193 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 18194 | |
8072405b JK |
18195 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
18196 | even if we error out during the parameters reading below. */ | |
18197 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 18198 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
18199 | |
18200 | iparams = 0; | |
639d11d3 | 18201 | child_die = die->child; |
c906108c SS |
18202 | while (child_die && child_die->tag) |
18203 | { | |
18204 | if (child_die->tag == DW_TAG_formal_parameter) | |
18205 | { | |
3ce3b1ba PA |
18206 | struct type *arg_type; |
18207 | ||
18208 | /* DWARF version 2 has no clean way to discern C++ | |
18209 | static and non-static member functions. G++ helps | |
18210 | GDB by marking the first parameter for non-static | |
18211 | member functions (which is the this pointer) as | |
18212 | artificial. We pass this information to | |
18213 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
18214 | ||
18215 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
18216 | 4.5 does not yet generate. */ | |
e142c38c | 18217 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 18218 | if (attr != nullptr) |
c45bc3f8 | 18219 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = attr->as_boolean (); |
c906108c | 18220 | else |
9c37b5ae | 18221 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
18222 | arg_type = die_type (child_die, cu); |
18223 | ||
18224 | /* RealView does not mark THIS as const, which the testsuite | |
18225 | expects. GCC marks THIS as const in method definitions, | |
18226 | but not in the class specifications (GCC PR 43053). */ | |
18227 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
18228 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
18229 | { | |
18230 | int is_this = 0; | |
18231 | struct dwarf2_cu *arg_cu = cu; | |
18232 | const char *name = dwarf2_name (child_die, cu); | |
18233 | ||
18234 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 18235 | if (attr != nullptr) |
3ce3b1ba PA |
18236 | { |
18237 | /* If the compiler emits this, use it. */ | |
18238 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
18239 | is_this = 1; | |
18240 | } | |
18241 | else if (name && strcmp (name, "this") == 0) | |
18242 | /* Function definitions will have the argument names. */ | |
18243 | is_this = 1; | |
18244 | else if (name == NULL && iparams == 0) | |
18245 | /* Declarations may not have the names, so like | |
18246 | elsewhere in GDB, assume an artificial first | |
18247 | argument is "this". */ | |
18248 | is_this = 1; | |
18249 | ||
18250 | if (is_this) | |
18251 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
18252 | arg_type, 0); | |
18253 | } | |
18254 | ||
5d14b6e5 | 18255 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
18256 | iparams++; |
18257 | } | |
436c571c | 18258 | child_die = child_die->sibling; |
c906108c SS |
18259 | } |
18260 | } | |
18261 | ||
76c10ea2 | 18262 | return ftype; |
c906108c SS |
18263 | } |
18264 | ||
f792889a | 18265 | static struct type * |
e7c27a73 | 18266 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18267 | { |
5e22e966 | 18268 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 18269 | const char *name = NULL; |
3c8e0968 | 18270 | struct type *this_type, *target_type; |
c906108c | 18271 | |
94af9270 | 18272 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc | 18273 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
8f53807e | 18274 | this_type->set_target_is_stub (true); |
f792889a | 18275 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
18276 | target_type = die_type (die, cu); |
18277 | if (target_type != this_type) | |
18278 | TYPE_TARGET_TYPE (this_type) = target_type; | |
18279 | else | |
18280 | { | |
18281 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
18282 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 18283 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
18284 | "- DIE at %s [in module %s]"), |
18285 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
18286 | TYPE_TARGET_TYPE (this_type) = NULL; |
18287 | } | |
e4003a34 TV |
18288 | if (name == NULL) |
18289 | { | |
18290 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
18291 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
18292 | Handle these by just returning the target type, rather than | |
18293 | constructing an anonymous typedef type and trying to handle this | |
18294 | elsewhere. */ | |
18295 | set_die_type (die, target_type, cu); | |
18296 | return target_type; | |
18297 | } | |
f792889a | 18298 | return this_type; |
c906108c SS |
18299 | } |
18300 | ||
a625a8c9 TT |
18301 | /* Helper for get_dwarf2_rational_constant that computes the value of |
18302 | a given gmp_mpz given an attribute. */ | |
18303 | ||
18304 | static void | |
18305 | get_mpz (struct dwarf2_cu *cu, gdb_mpz *value, struct attribute *attr) | |
18306 | { | |
18307 | /* GCC will sometimes emit a 16-byte constant value as a DWARF | |
18308 | location expression that pushes an implicit value. */ | |
18309 | if (attr->form == DW_FORM_exprloc) | |
18310 | { | |
18311 | dwarf_block *blk = attr->as_block (); | |
18312 | if (blk->size > 0 && blk->data[0] == DW_OP_implicit_value) | |
18313 | { | |
18314 | uint64_t len; | |
18315 | const gdb_byte *ptr = safe_read_uleb128 (blk->data + 1, | |
18316 | blk->data + blk->size, | |
18317 | &len); | |
18318 | if (ptr - blk->data + len <= blk->size) | |
18319 | { | |
18320 | mpz_import (value->val, len, | |
18321 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
18322 | 1, 0, 0, ptr); | |
18323 | return; | |
18324 | } | |
18325 | } | |
18326 | ||
18327 | /* On failure set it to 1. */ | |
18328 | *value = gdb_mpz (1); | |
18329 | } | |
18330 | else if (attr->form_is_block ()) | |
18331 | { | |
18332 | dwarf_block *blk = attr->as_block (); | |
18333 | mpz_import (value->val, blk->size, | |
18334 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
18335 | 1, 0, 0, blk->data); | |
18336 | } | |
18337 | else | |
18338 | *value = gdb_mpz (attr->constant_value (1)); | |
18339 | } | |
18340 | ||
09584414 JB |
18341 | /* Assuming DIE is a rational DW_TAG_constant, read the DIE's |
18342 | numerator and denominator into NUMERATOR and DENOMINATOR (resp). | |
18343 | ||
18344 | If the numerator and/or numerator attribute is missing, | |
18345 | a complaint is filed, and NUMERATOR and DENOMINATOR are left | |
18346 | untouched. */ | |
18347 | ||
18348 | static void | |
18349 | get_dwarf2_rational_constant (struct die_info *die, struct dwarf2_cu *cu, | |
5cde1d82 | 18350 | gdb_mpz *numerator, gdb_mpz *denominator) |
09584414 JB |
18351 | { |
18352 | struct attribute *num_attr, *denom_attr; | |
18353 | ||
18354 | num_attr = dwarf2_attr (die, DW_AT_GNU_numerator, cu); | |
18355 | if (num_attr == nullptr) | |
18356 | complaint (_("DW_AT_GNU_numerator missing in %s DIE at %s"), | |
18357 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18358 | ||
18359 | denom_attr = dwarf2_attr (die, DW_AT_GNU_denominator, cu); | |
18360 | if (denom_attr == nullptr) | |
18361 | complaint (_("DW_AT_GNU_denominator missing in %s DIE at %s"), | |
18362 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18363 | ||
18364 | if (num_attr == nullptr || denom_attr == nullptr) | |
18365 | return; | |
18366 | ||
a625a8c9 TT |
18367 | get_mpz (cu, numerator, num_attr); |
18368 | get_mpz (cu, denominator, denom_attr); | |
09584414 JB |
18369 | } |
18370 | ||
18371 | /* Same as get_dwarf2_rational_constant, but extracting an unsigned | |
18372 | rational constant, rather than a signed one. | |
18373 | ||
18374 | If the rational constant has a negative value, a complaint | |
18375 | is filed, and NUMERATOR and DENOMINATOR are left untouched. */ | |
18376 | ||
18377 | static void | |
18378 | get_dwarf2_unsigned_rational_constant (struct die_info *die, | |
18379 | struct dwarf2_cu *cu, | |
5cde1d82 TT |
18380 | gdb_mpz *numerator, |
18381 | gdb_mpz *denominator) | |
09584414 | 18382 | { |
5cde1d82 TT |
18383 | gdb_mpz num (1); |
18384 | gdb_mpz denom (1); | |
09584414 JB |
18385 | |
18386 | get_dwarf2_rational_constant (die, cu, &num, &denom); | |
5cde1d82 | 18387 | if (mpz_sgn (num.val) == -1 && mpz_sgn (denom.val) == -1) |
09584414 | 18388 | { |
5cde1d82 TT |
18389 | mpz_neg (num.val, num.val); |
18390 | mpz_neg (denom.val, denom.val); | |
09584414 | 18391 | } |
5cde1d82 | 18392 | else if (mpz_sgn (num.val) == -1) |
09584414 JB |
18393 | { |
18394 | complaint (_("unexpected negative value for DW_AT_GNU_numerator" | |
18395 | " in DIE at %s"), | |
18396 | sect_offset_str (die->sect_off)); | |
18397 | return; | |
18398 | } | |
5cde1d82 | 18399 | else if (mpz_sgn (denom.val) == -1) |
09584414 JB |
18400 | { |
18401 | complaint (_("unexpected negative value for DW_AT_GNU_denominator" | |
18402 | " in DIE at %s"), | |
18403 | sect_offset_str (die->sect_off)); | |
18404 | return; | |
18405 | } | |
18406 | ||
5cde1d82 TT |
18407 | *numerator = std::move (num); |
18408 | *denominator = std::move (denom); | |
09584414 JB |
18409 | } |
18410 | ||
bbcdf9ab TT |
18411 | /* Assuming that ENCODING is a string whose contents starting at the |
18412 | K'th character is "_nn" where "nn" is a decimal number, scan that | |
18413 | number and set RESULT to the value. K is updated to point to the | |
18414 | character immediately following the number. | |
18415 | ||
18416 | If the string does not conform to the format described above, false | |
18417 | is returned, and K may or may not be changed. */ | |
18418 | ||
18419 | static bool | |
18420 | ada_get_gnat_encoded_number (const char *encoding, int &k, gdb_mpz *result) | |
18421 | { | |
18422 | /* The next character should be an underscore ('_') followed | |
18423 | by a digit. */ | |
18424 | if (encoding[k] != '_' || !isdigit (encoding[k + 1])) | |
18425 | return false; | |
18426 | ||
18427 | /* Skip the underscore. */ | |
18428 | k++; | |
18429 | int start = k; | |
18430 | ||
18431 | /* Determine the number of digits for our number. */ | |
18432 | while (isdigit (encoding[k])) | |
18433 | k++; | |
18434 | if (k == start) | |
18435 | return false; | |
18436 | ||
18437 | std::string copy (&encoding[start], k - start); | |
18438 | if (mpz_set_str (result->val, copy.c_str (), 10) == -1) | |
18439 | return false; | |
18440 | ||
18441 | return true; | |
18442 | } | |
18443 | ||
18444 | /* Scan two numbers from ENCODING at OFFSET, assuming the string is of | |
18445 | the form _NN_DD, where NN and DD are decimal numbers. Set NUM and | |
18446 | DENOM, update OFFSET, and return true on success. Return false on | |
18447 | failure. */ | |
18448 | ||
18449 | static bool | |
18450 | ada_get_gnat_encoded_ratio (const char *encoding, int &offset, | |
18451 | gdb_mpz *num, gdb_mpz *denom) | |
18452 | { | |
18453 | if (!ada_get_gnat_encoded_number (encoding, offset, num)) | |
18454 | return false; | |
18455 | return ada_get_gnat_encoded_number (encoding, offset, denom); | |
18456 | } | |
18457 | ||
09584414 | 18458 | /* Assuming DIE corresponds to a fixed point type, finish the creation |
bbcdf9ab TT |
18459 | of the corresponding TYPE by setting its type-specific data. CU is |
18460 | the DIE's CU. SUFFIX is the "XF" type name suffix coming from GNAT | |
18461 | encodings. It is nullptr if the GNAT encoding should be | |
18462 | ignored. */ | |
09584414 JB |
18463 | |
18464 | static void | |
bbcdf9ab TT |
18465 | finish_fixed_point_type (struct type *type, const char *suffix, |
18466 | struct die_info *die, struct dwarf2_cu *cu) | |
09584414 | 18467 | { |
09584414 JB |
18468 | gdb_assert (type->code () == TYPE_CODE_FIXED_POINT |
18469 | && TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FIXED_POINT); | |
18470 | ||
bbcdf9ab TT |
18471 | /* If GNAT encodings are preferred, don't examine the |
18472 | attributes. */ | |
18473 | struct attribute *attr = nullptr; | |
18474 | if (suffix == nullptr) | |
18475 | { | |
18476 | attr = dwarf2_attr (die, DW_AT_binary_scale, cu); | |
18477 | if (attr == nullptr) | |
18478 | attr = dwarf2_attr (die, DW_AT_decimal_scale, cu); | |
18479 | if (attr == nullptr) | |
18480 | attr = dwarf2_attr (die, DW_AT_small, cu); | |
18481 | } | |
09584414 | 18482 | |
5cde1d82 TT |
18483 | /* Numerator and denominator of our fixed-point type's scaling factor. |
18484 | The default is a scaling factor of 1, which we use as a fallback | |
18485 | when we are not able to decode it (problem with the debugging info, | |
18486 | unsupported forms, bug in GDB, etc...). Using that as the default | |
18487 | allows us to at least print the unscaled value, which might still | |
18488 | be useful to a user. */ | |
18489 | gdb_mpz scale_num (1); | |
18490 | gdb_mpz scale_denom (1); | |
18491 | ||
09584414 JB |
18492 | if (attr == nullptr) |
18493 | { | |
bbcdf9ab TT |
18494 | int offset = 0; |
18495 | if (suffix != nullptr | |
18496 | && ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18497 | &scale_denom) | |
18498 | /* The number might be encoded as _nn_dd_nn_dd, where the | |
18499 | second ratio is the 'small value. In this situation, we | |
18500 | want the second value. */ | |
18501 | && (suffix[offset] != '_' | |
18502 | || ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18503 | &scale_denom))) | |
18504 | { | |
18505 | /* Found it. */ | |
18506 | } | |
18507 | else | |
18508 | { | |
18509 | /* Scaling factor not found. Assume a scaling factor of 1, | |
18510 | and hope for the best. At least the user will be able to | |
18511 | see the encoded value. */ | |
18512 | scale_num = 1; | |
18513 | scale_denom = 1; | |
18514 | complaint (_("no scale found for fixed-point type (DIE at %s)"), | |
18515 | sect_offset_str (die->sect_off)); | |
18516 | } | |
09584414 JB |
18517 | } |
18518 | else if (attr->name == DW_AT_binary_scale) | |
18519 | { | |
18520 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18521 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18522 | |
5cde1d82 | 18523 | mpz_mul_2exp (num_or_denom->val, num_or_denom->val, std::abs (scale_exp)); |
09584414 JB |
18524 | } |
18525 | else if (attr->name == DW_AT_decimal_scale) | |
18526 | { | |
18527 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18528 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18529 | |
5cde1d82 | 18530 | mpz_ui_pow_ui (num_or_denom->val, 10, std::abs (scale_exp)); |
09584414 JB |
18531 | } |
18532 | else if (attr->name == DW_AT_small) | |
18533 | { | |
18534 | struct die_info *scale_die; | |
18535 | struct dwarf2_cu *scale_cu = cu; | |
18536 | ||
18537 | scale_die = follow_die_ref (die, attr, &scale_cu); | |
18538 | if (scale_die->tag == DW_TAG_constant) | |
18539 | get_dwarf2_unsigned_rational_constant (scale_die, scale_cu, | |
18540 | &scale_num, &scale_denom); | |
18541 | else | |
18542 | complaint (_("%s DIE not supported as target of DW_AT_small attribute" | |
18543 | " (DIE at %s)"), | |
18544 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18545 | } | |
18546 | else | |
18547 | { | |
18548 | complaint (_("unsupported scale attribute %s for fixed-point type" | |
18549 | " (DIE at %s)"), | |
18550 | dwarf_attr_name (attr->name), | |
18551 | sect_offset_str (die->sect_off)); | |
18552 | } | |
18553 | ||
2a12c336 | 18554 | gdb_mpq &scaling_factor = type->fixed_point_info ().scaling_factor; |
5cde1d82 TT |
18555 | mpz_set (mpq_numref (scaling_factor.val), scale_num.val); |
18556 | mpz_set (mpq_denref (scaling_factor.val), scale_denom.val); | |
09584414 JB |
18557 | mpq_canonicalize (scaling_factor.val); |
18558 | } | |
18559 | ||
bbcdf9ab TT |
18560 | /* The gnat-encoding suffix for fixed point. */ |
18561 | ||
18562 | #define GNAT_FIXED_POINT_SUFFIX "___XF_" | |
18563 | ||
18564 | /* If NAME encodes an Ada fixed-point type, return a pointer to the | |
18565 | "XF" suffix of the name. The text after this is what encodes the | |
18566 | 'small and 'delta information. Otherwise, return nullptr. */ | |
18567 | ||
18568 | static const char * | |
18569 | gnat_encoded_fixed_point_type_info (const char *name) | |
18570 | { | |
18571 | return strstr (name, GNAT_FIXED_POINT_SUFFIX); | |
18572 | } | |
18573 | ||
9b790ce7 UW |
18574 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
18575 | (which may be different from NAME) to the architecture back-end to allow | |
18576 | it to guess the correct format if necessary. */ | |
18577 | ||
18578 | static struct type * | |
18579 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 18580 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 18581 | { |
08feed99 | 18582 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
18583 | const struct floatformat **format; |
18584 | struct type *type; | |
18585 | ||
18586 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
18587 | if (format) | |
103a685e | 18588 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 18589 | else |
77b7c781 | 18590 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
18591 | |
18592 | return type; | |
18593 | } | |
18594 | ||
eb77c9df AB |
18595 | /* Allocate an integer type of size BITS and name NAME. */ |
18596 | ||
18597 | static struct type * | |
18598 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
18599 | int bits, int unsigned_p, const char *name) | |
18600 | { | |
18601 | struct type *type; | |
18602 | ||
18603 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
18604 | instead of using DW_TAG_unspecified_type. This has been seen on | |
18605 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
18606 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
18607 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
18608 | type = objfile_type (objfile)->builtin_void; |
18609 | else | |
18610 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
18611 | ||
18612 | return type; | |
18613 | } | |
18614 | ||
09584414 JB |
18615 | /* Return true if DIE has a DW_AT_small attribute whose value is |
18616 | a constant rational, where both the numerator and denominator | |
18617 | are equal to zero. | |
18618 | ||
18619 | CU is the DIE's Compilation Unit. */ | |
18620 | ||
18621 | static bool | |
18622 | has_zero_over_zero_small_attribute (struct die_info *die, | |
18623 | struct dwarf2_cu *cu) | |
18624 | { | |
18625 | struct attribute *attr = dwarf2_attr (die, DW_AT_small, cu); | |
18626 | if (attr == nullptr) | |
18627 | return false; | |
18628 | ||
18629 | struct dwarf2_cu *scale_cu = cu; | |
18630 | struct die_info *scale_die | |
18631 | = follow_die_ref (die, attr, &scale_cu); | |
18632 | ||
18633 | if (scale_die->tag != DW_TAG_constant) | |
18634 | return false; | |
18635 | ||
5cde1d82 | 18636 | gdb_mpz num (1), denom (1); |
09584414 | 18637 | get_dwarf2_rational_constant (scale_die, cu, &num, &denom); |
5cde1d82 | 18638 | return mpz_sgn (num.val) == 0 && mpz_sgn (denom.val) == 0; |
09584414 JB |
18639 | } |
18640 | ||
8bdc1658 AB |
18641 | /* Initialise and return a floating point type of size BITS suitable for |
18642 | use as a component of a complex number. The NAME_HINT is passed through | |
18643 | when initialising the floating point type and is the name of the complex | |
18644 | type. | |
18645 | ||
18646 | As DWARF doesn't currently provide an explicit name for the components | |
18647 | of a complex number, but it can be helpful to have these components | |
18648 | named, we try to select a suitable name based on the size of the | |
18649 | component. */ | |
18650 | static struct type * | |
18651 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
18652 | struct objfile *objfile, | |
103a685e TT |
18653 | int bits, const char *name_hint, |
18654 | enum bfd_endian byte_order) | |
8bdc1658 | 18655 | { |
08feed99 | 18656 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
18657 | struct type *tt = nullptr; |
18658 | ||
35add35e AB |
18659 | /* Try to find a suitable floating point builtin type of size BITS. |
18660 | We're going to use the name of this type as the name for the complex | |
18661 | target type that we are about to create. */ | |
1db455a7 | 18662 | switch (cu->language) |
8bdc1658 | 18663 | { |
1db455a7 AB |
18664 | case language_fortran: |
18665 | switch (bits) | |
18666 | { | |
18667 | case 32: | |
18668 | tt = builtin_f_type (gdbarch)->builtin_real; | |
18669 | break; | |
18670 | case 64: | |
18671 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
18672 | break; | |
18673 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18674 | case 128: | |
18675 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
18676 | break; | |
18677 | } | |
8bdc1658 | 18678 | break; |
1db455a7 AB |
18679 | default: |
18680 | switch (bits) | |
18681 | { | |
18682 | case 32: | |
18683 | tt = builtin_type (gdbarch)->builtin_float; | |
18684 | break; | |
18685 | case 64: | |
18686 | tt = builtin_type (gdbarch)->builtin_double; | |
18687 | break; | |
18688 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18689 | case 128: | |
18690 | tt = builtin_type (gdbarch)->builtin_long_double; | |
18691 | break; | |
18692 | } | |
8bdc1658 AB |
18693 | break; |
18694 | } | |
18695 | ||
35add35e AB |
18696 | /* If the type we found doesn't match the size we were looking for, then |
18697 | pretend we didn't find a type at all, the complex target type we | |
18698 | create will then be nameless. */ | |
a12e5744 | 18699 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
18700 | tt = nullptr; |
18701 | ||
7d93a1e0 | 18702 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 18703 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
18704 | } |
18705 | ||
c906108c SS |
18706 | /* Find a representation of a given base type and install |
18707 | it in the TYPE field of the die. */ | |
18708 | ||
f792889a | 18709 | static struct type * |
e7c27a73 | 18710 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18711 | { |
5e22e966 | 18712 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
18713 | struct type *type; |
18714 | struct attribute *attr; | |
19f392bc | 18715 | int encoding = 0, bits = 0; |
15d034d0 | 18716 | const char *name; |
34877895 | 18717 | gdbarch *arch; |
c906108c | 18718 | |
e142c38c | 18719 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
529908cb TT |
18720 | if (attr != nullptr && attr->form_is_constant ()) |
18721 | encoding = attr->constant_value (0); | |
e142c38c | 18722 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18723 | if (attr != nullptr) |
529908cb | 18724 | bits = attr->constant_value (0) * TARGET_CHAR_BIT; |
39cbfefa | 18725 | name = dwarf2_name (die, cu); |
6ccb9162 | 18726 | if (!name) |
34877895 | 18727 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 18728 | |
08feed99 | 18729 | arch = objfile->arch (); |
103a685e TT |
18730 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
18731 | ||
34877895 | 18732 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
529908cb | 18733 | if (attr != nullptr && attr->form_is_constant ()) |
103a685e | 18734 | { |
529908cb | 18735 | int endianity = attr->constant_value (0); |
103a685e TT |
18736 | |
18737 | switch (endianity) | |
18738 | { | |
18739 | case DW_END_big: | |
18740 | byte_order = BFD_ENDIAN_BIG; | |
18741 | break; | |
18742 | case DW_END_little: | |
18743 | byte_order = BFD_ENDIAN_LITTLE; | |
18744 | break; | |
18745 | default: | |
18746 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
18747 | break; | |
18748 | } | |
18749 | } | |
6ccb9162 | 18750 | |
09584414 JB |
18751 | if ((encoding == DW_ATE_signed_fixed || encoding == DW_ATE_unsigned_fixed) |
18752 | && cu->language == language_ada | |
18753 | && has_zero_over_zero_small_attribute (die, cu)) | |
18754 | { | |
18755 | /* brobecker/2018-02-24: This is a fixed point type for which | |
18756 | the scaling factor is represented as fraction whose value | |
18757 | does not make sense (zero divided by zero), so we should | |
18758 | normally never see these. However, there is a small category | |
18759 | of fixed point types for which GNAT is unable to provide | |
18760 | the scaling factor via the standard DWARF mechanisms, and | |
18761 | for which the info is provided via the GNAT encodings instead. | |
bbcdf9ab | 18762 | This is likely what this DIE is about. */ |
09584414 JB |
18763 | encoding = (encoding == DW_ATE_signed_fixed |
18764 | ? DW_ATE_signed | |
18765 | : DW_ATE_unsigned); | |
18766 | } | |
18767 | ||
bbcdf9ab TT |
18768 | /* With GNAT encodings, fixed-point information will be encoded in |
18769 | the type name. Note that this can also occur with the above | |
18770 | zero-over-zero case, which is why this is a separate "if" rather | |
18771 | than an "else if". */ | |
18772 | const char *gnat_encoding_suffix = nullptr; | |
18773 | if ((encoding == DW_ATE_signed || encoding == DW_ATE_unsigned) | |
18774 | && cu->language == language_ada | |
18775 | && name != nullptr) | |
18776 | { | |
18777 | gnat_encoding_suffix = gnat_encoded_fixed_point_type_info (name); | |
18778 | if (gnat_encoding_suffix != nullptr) | |
18779 | { | |
18780 | gdb_assert (startswith (gnat_encoding_suffix, | |
18781 | GNAT_FIXED_POINT_SUFFIX)); | |
18782 | name = obstack_strndup (&cu->per_objfile->objfile->objfile_obstack, | |
18783 | name, gnat_encoding_suffix - name); | |
18784 | /* Use -1 here so that SUFFIX points at the "_" after the | |
18785 | "XF". */ | |
18786 | gnat_encoding_suffix += strlen (GNAT_FIXED_POINT_SUFFIX) - 1; | |
18787 | ||
18788 | encoding = (encoding == DW_ATE_signed | |
18789 | ? DW_ATE_signed_fixed | |
18790 | : DW_ATE_unsigned_fixed); | |
18791 | } | |
18792 | } | |
18793 | ||
6ccb9162 | 18794 | switch (encoding) |
c906108c | 18795 | { |
6ccb9162 UW |
18796 | case DW_ATE_address: |
18797 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 18798 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 18799 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
18800 | break; |
18801 | case DW_ATE_boolean: | |
19f392bc | 18802 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
18803 | break; |
18804 | case DW_ATE_complex_float: | |
103a685e TT |
18805 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
18806 | byte_order); | |
78134374 | 18807 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
18808 | { |
18809 | if (name == nullptr) | |
18810 | { | |
18811 | struct obstack *obstack | |
5e22e966 | 18812 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 18813 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
18814 | nullptr); |
18815 | } | |
18816 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
18817 | } | |
18818 | else | |
18819 | type = init_complex_type (name, type); | |
6ccb9162 UW |
18820 | break; |
18821 | case DW_ATE_decimal_float: | |
19f392bc | 18822 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
18823 | break; |
18824 | case DW_ATE_float: | |
103a685e | 18825 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
18826 | break; |
18827 | case DW_ATE_signed: | |
eb77c9df | 18828 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18829 | break; |
18830 | case DW_ATE_unsigned: | |
3b2b8fea TT |
18831 | if (cu->language == language_fortran |
18832 | && name | |
61012eef | 18833 | && startswith (name, "character(")) |
19f392bc UW |
18834 | type = init_character_type (objfile, bits, 1, name); |
18835 | else | |
eb77c9df | 18836 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
18837 | break; |
18838 | case DW_ATE_signed_char: | |
6e70227d | 18839 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
18840 | || cu->language == language_pascal |
18841 | || cu->language == language_fortran) | |
19f392bc UW |
18842 | type = init_character_type (objfile, bits, 0, name); |
18843 | else | |
eb77c9df | 18844 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18845 | break; |
18846 | case DW_ATE_unsigned_char: | |
868a0084 | 18847 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 18848 | || cu->language == language_pascal |
c44af4eb TT |
18849 | || cu->language == language_fortran |
18850 | || cu->language == language_rust) | |
19f392bc UW |
18851 | type = init_character_type (objfile, bits, 1, name); |
18852 | else | |
eb77c9df | 18853 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 18854 | break; |
75079b2b | 18855 | case DW_ATE_UTF: |
53e710ac | 18856 | { |
53e710ac PA |
18857 | if (bits == 16) |
18858 | type = builtin_type (arch)->builtin_char16; | |
18859 | else if (bits == 32) | |
18860 | type = builtin_type (arch)->builtin_char32; | |
18861 | else | |
18862 | { | |
b98664d3 | 18863 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 18864 | bits); |
eb77c9df | 18865 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
18866 | } |
18867 | return set_die_type (die, type, cu); | |
18868 | } | |
75079b2b | 18869 | break; |
09584414 JB |
18870 | case DW_ATE_signed_fixed: |
18871 | type = init_fixed_point_type (objfile, bits, 0, name); | |
bbcdf9ab | 18872 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 JB |
18873 | break; |
18874 | case DW_ATE_unsigned_fixed: | |
18875 | type = init_fixed_point_type (objfile, bits, 1, name); | |
bbcdf9ab | 18876 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 | 18877 | break; |
75079b2b | 18878 | |
6ccb9162 | 18879 | default: |
b98664d3 | 18880 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 18881 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 18882 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 18883 | break; |
c906108c | 18884 | } |
6ccb9162 | 18885 | |
0114d602 | 18886 | if (name && strcmp (name, "char") == 0) |
15152a54 | 18887 | type->set_has_no_signedness (true); |
0114d602 | 18888 | |
2b4424c3 TT |
18889 | maybe_set_alignment (cu, die, type); |
18890 | ||
db558e34 | 18891 | type->set_endianity_is_not_default (gdbarch_byte_order (arch) != byte_order); |
34877895 | 18892 | |
20a5fcbd TT |
18893 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_INT) |
18894 | { | |
18895 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); | |
529908cb | 18896 | if (attr != nullptr && attr->as_unsigned () <= 8 * TYPE_LENGTH (type)) |
20a5fcbd | 18897 | { |
529908cb | 18898 | unsigned real_bit_size = attr->as_unsigned (); |
20a5fcbd TT |
18899 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
18900 | /* Only use the attributes if they make sense together. */ | |
18901 | if (attr == nullptr | |
529908cb TT |
18902 | || (attr->as_unsigned () + real_bit_size |
18903 | <= 8 * TYPE_LENGTH (type))) | |
20a5fcbd TT |
18904 | { |
18905 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_size | |
18906 | = real_bit_size; | |
18907 | if (attr != nullptr) | |
18908 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_offset | |
529908cb | 18909 | = attr->as_unsigned (); |
20a5fcbd TT |
18910 | } |
18911 | } | |
18912 | } | |
18913 | ||
f792889a | 18914 | return set_die_type (die, type, cu); |
c906108c SS |
18915 | } |
18916 | ||
80180f79 SA |
18917 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
18918 | resulting value of the attribute into struct bound_prop. | |
18919 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
18920 | ||
18921 | static int | |
18922 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
18923 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
18924 | struct type *default_type) | |
80180f79 SA |
18925 | { |
18926 | struct dwarf2_property_baton *baton; | |
5e22e966 | 18927 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
18928 | struct objfile *objfile = per_objfile->objfile; |
18929 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 18930 | |
9a49df9d AB |
18931 | gdb_assert (default_type != NULL); |
18932 | ||
80180f79 SA |
18933 | if (attr == NULL || prop == NULL) |
18934 | return 0; | |
18935 | ||
4fc6c0d5 | 18936 | if (attr->form_is_block ()) |
80180f79 | 18937 | { |
8d749320 | 18938 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18939 | baton->property_type = default_type; |
80180f79 | 18940 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18941 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18942 | |
18943 | struct dwarf_block *block = attr->as_block (); | |
18944 | baton->locexpr.size = block->size; | |
18945 | baton->locexpr.data = block->data; | |
216a7e6b AB |
18946 | switch (attr->name) |
18947 | { | |
18948 | case DW_AT_string_length: | |
18949 | baton->locexpr.is_reference = true; | |
18950 | break; | |
18951 | default: | |
18952 | baton->locexpr.is_reference = false; | |
18953 | break; | |
18954 | } | |
8c2e4e06 SM |
18955 | |
18956 | prop->set_locexpr (baton); | |
18957 | gdb_assert (prop->baton () != NULL); | |
80180f79 | 18958 | } |
cd6c91b4 | 18959 | else if (attr->form_is_ref ()) |
80180f79 SA |
18960 | { |
18961 | struct dwarf2_cu *target_cu = cu; | |
18962 | struct die_info *target_die; | |
18963 | struct attribute *target_attr; | |
18964 | ||
18965 | target_die = follow_die_ref (die, attr, &target_cu); | |
18966 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
18967 | if (target_attr == NULL) |
18968 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
18969 | target_cu); | |
80180f79 SA |
18970 | if (target_attr == NULL) |
18971 | return 0; | |
18972 | ||
df25ebbd | 18973 | switch (target_attr->name) |
80180f79 | 18974 | { |
df25ebbd | 18975 | case DW_AT_location: |
cd6c91b4 | 18976 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 18977 | { |
8d749320 | 18978 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18979 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18980 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
8c2e4e06 SM |
18981 | prop->set_loclist (baton); |
18982 | gdb_assert (prop->baton () != NULL); | |
df25ebbd | 18983 | } |
4fc6c0d5 | 18984 | else if (target_attr->form_is_block ()) |
df25ebbd | 18985 | { |
8d749320 | 18986 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18987 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18988 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18989 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18990 | struct dwarf_block *block = target_attr->as_block (); |
18991 | baton->locexpr.size = block->size; | |
18992 | baton->locexpr.data = block->data; | |
9a49df9d | 18993 | baton->locexpr.is_reference = true; |
8c2e4e06 SM |
18994 | prop->set_locexpr (baton); |
18995 | gdb_assert (prop->baton () != NULL); | |
df25ebbd JB |
18996 | } |
18997 | else | |
18998 | { | |
18999 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
19000 | "dynamic property"); | |
19001 | return 0; | |
19002 | } | |
19003 | break; | |
19004 | case DW_AT_data_member_location: | |
19005 | { | |
19006 | LONGEST offset; | |
19007 | ||
19008 | if (!handle_data_member_location (target_die, target_cu, | |
19009 | &offset)) | |
19010 | return 0; | |
19011 | ||
8d749320 | 19012 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 19013 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 19014 | target_cu); |
df25ebbd JB |
19015 | baton->offset_info.offset = offset; |
19016 | baton->offset_info.type = die_type (target_die, target_cu); | |
8c2e4e06 | 19017 | prop->set_addr_offset (baton); |
df25ebbd JB |
19018 | break; |
19019 | } | |
80180f79 SA |
19020 | } |
19021 | } | |
cd6c91b4 | 19022 | else if (attr->form_is_constant ()) |
8c2e4e06 | 19023 | prop->set_const_val (attr->constant_value (0)); |
80180f79 SA |
19024 | else |
19025 | { | |
19026 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
19027 | dwarf2_name (die, cu)); | |
19028 | return 0; | |
19029 | } | |
19030 | ||
19031 | return 1; | |
19032 | } | |
19033 | ||
09ba997f | 19034 | /* See read.h. */ |
9a49df9d | 19035 | |
09ba997f | 19036 | struct type * |
293e7e51 | 19037 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 19038 | { |
9a49df9d AB |
19039 | struct type *int_type; |
19040 | ||
19041 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
19042 | #define TRY_TYPE(F) \ |
19043 | int_type = (unsigned_p \ | |
19044 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
19045 | : objfile_type (objfile)->builtin_ ## F); \ | |
19046 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
19047 | return int_type |
19048 | ||
19049 | TRY_TYPE (char); | |
19050 | TRY_TYPE (short); | |
19051 | TRY_TYPE (int); | |
19052 | TRY_TYPE (long); | |
19053 | TRY_TYPE (long_long); | |
19054 | ||
19055 | #undef TRY_TYPE | |
19056 | ||
19057 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
19058 | } | |
19059 | ||
09ba997f | 19060 | /* See read.h. */ |
11a8b164 | 19061 | |
09ba997f | 19062 | struct type * |
293e7e51 | 19063 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 19064 | { |
293e7e51 SM |
19065 | int addr_size = this->per_cu->addr_size (); |
19066 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
19067 | } |
19068 | ||
b86352cf AB |
19069 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
19070 | present (which is valid) then compute the default type based on the | |
19071 | compilation units address size. */ | |
19072 | ||
19073 | static struct type * | |
19074 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
19075 | { | |
19076 | struct type *index_type = die_type (die, cu); | |
19077 | ||
19078 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
19079 | without specifying a base type. | |
19080 | In that case, the base type must be set to the type of | |
19081 | the lower bound, upper bound or count, in that order, if any of these | |
19082 | three attributes references an object that has a type. | |
19083 | If no base type is found, the Dwarf-2 specifications say that | |
19084 | a signed integer type of size equal to the size of an address should | |
19085 | be used. | |
19086 | For the following C code: `extern char gdb_int [];' | |
19087 | GCC produces an empty range DIE. | |
19088 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
19089 | high bound or count are not yet handled by this code. */ | |
78134374 | 19090 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 19091 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
19092 | |
19093 | return index_type; | |
19094 | } | |
19095 | ||
a02abb62 JB |
19096 | /* Read the given DW_AT_subrange DIE. */ |
19097 | ||
f792889a | 19098 | static struct type * |
a02abb62 JB |
19099 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
19100 | { | |
4c9ad8c2 | 19101 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
19102 | struct type *range_type; |
19103 | struct attribute *attr; | |
729efb13 | 19104 | struct dynamic_prop low, high; |
4fae6e18 | 19105 | int low_default_is_valid; |
c451ebe5 | 19106 | int high_bound_is_count = 0; |
15d034d0 | 19107 | const char *name; |
d359392f | 19108 | ULONGEST negative_mask; |
e77813c8 | 19109 | |
b86352cf AB |
19110 | orig_base_type = read_subrange_index_type (die, cu); |
19111 | ||
4c9ad8c2 TT |
19112 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
19113 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
19114 | creating the range type, but we use the result of check_typedef | |
19115 | when examining properties of the type. */ | |
19116 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 19117 | |
7e314c57 JK |
19118 | /* The die_type call above may have already set the type for this DIE. */ |
19119 | range_type = get_die_type (die, cu); | |
19120 | if (range_type) | |
19121 | return range_type; | |
19122 | ||
8c2e4e06 | 19123 | high.set_const_val (0); |
729efb13 | 19124 | |
4fae6e18 JK |
19125 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
19126 | omitting DW_AT_lower_bound. */ | |
19127 | switch (cu->language) | |
6e70227d | 19128 | { |
4fae6e18 JK |
19129 | case language_c: |
19130 | case language_cplus: | |
8c2e4e06 | 19131 | low.set_const_val (0); |
4fae6e18 JK |
19132 | low_default_is_valid = 1; |
19133 | break; | |
19134 | case language_fortran: | |
8c2e4e06 | 19135 | low.set_const_val (1); |
4fae6e18 JK |
19136 | low_default_is_valid = 1; |
19137 | break; | |
19138 | case language_d: | |
4fae6e18 | 19139 | case language_objc: |
c44af4eb | 19140 | case language_rust: |
8c2e4e06 | 19141 | low.set_const_val (0); |
4fae6e18 JK |
19142 | low_default_is_valid = (cu->header.version >= 4); |
19143 | break; | |
19144 | case language_ada: | |
19145 | case language_m2: | |
19146 | case language_pascal: | |
8c2e4e06 | 19147 | low.set_const_val (1); |
4fae6e18 JK |
19148 | low_default_is_valid = (cu->header.version >= 4); |
19149 | break; | |
19150 | default: | |
8c2e4e06 | 19151 | low.set_const_val (0); |
4fae6e18 JK |
19152 | low_default_is_valid = 0; |
19153 | break; | |
a02abb62 JB |
19154 | } |
19155 | ||
e142c38c | 19156 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 19157 | if (attr != nullptr) |
9a49df9d | 19158 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 19159 | else if (!low_default_is_valid) |
b98664d3 | 19160 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
19161 | "- DIE at %s [in module %s]"), |
19162 | sect_offset_str (die->sect_off), | |
5e22e966 | 19163 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 19164 | |
506f5c41 TV |
19165 | struct attribute *attr_ub, *attr_count; |
19166 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 19167 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 19168 | { |
506f5c41 | 19169 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 19170 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 19171 | { |
c451ebe5 | 19172 | /* If bounds are constant do the final calculation here. */ |
8c2e4e06 SM |
19173 | if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) |
19174 | high.set_const_val (low.const_val () + high.const_val () - 1); | |
c451ebe5 SA |
19175 | else |
19176 | high_bound_is_count = 1; | |
c2ff108b | 19177 | } |
506f5c41 TV |
19178 | else |
19179 | { | |
19180 | if (attr_ub != NULL) | |
19181 | complaint (_("Unresolved DW_AT_upper_bound " | |
19182 | "- DIE at %s [in module %s]"), | |
19183 | sect_offset_str (die->sect_off), | |
5e22e966 | 19184 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
19185 | if (attr_count != NULL) |
19186 | complaint (_("Unresolved DW_AT_count " | |
19187 | "- DIE at %s [in module %s]"), | |
19188 | sect_offset_str (die->sect_off), | |
5e22e966 | 19189 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 19190 | } |
e77813c8 | 19191 | } |
a02abb62 | 19192 | |
4e962e74 TT |
19193 | LONGEST bias = 0; |
19194 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 19195 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 19196 | bias = bias_attr->constant_value (0); |
4e962e74 | 19197 | |
dbb9c2b1 JB |
19198 | /* Normally, the DWARF producers are expected to use a signed |
19199 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
19200 | But this is unfortunately not always the case, as witnessed | |
19201 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
19202 | is used instead. To work around that ambiguity, we treat | |
19203 | the bounds as signed, and thus sign-extend their values, when | |
19204 | the base type is signed. */ | |
6e70227d | 19205 | negative_mask = |
d359392f | 19206 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
8c2e4e06 | 19207 | if (low.kind () == PROP_CONST |
c6d940a9 | 19208 | && !base_type->is_unsigned () && (low.const_val () & negative_mask)) |
8c2e4e06 SM |
19209 | low.set_const_val (low.const_val () | negative_mask); |
19210 | if (high.kind () == PROP_CONST | |
c6d940a9 | 19211 | && !base_type->is_unsigned () && (high.const_val () & negative_mask)) |
8c2e4e06 | 19212 | high.set_const_val (high.const_val () | negative_mask); |
43bbcdc2 | 19213 | |
5bbd8269 AB |
19214 | /* Check for bit and byte strides. */ |
19215 | struct dynamic_prop byte_stride_prop; | |
19216 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
19217 | if (attr_byte_stride != nullptr) | |
19218 | { | |
293e7e51 | 19219 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
19220 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
19221 | prop_type); | |
19222 | } | |
19223 | ||
19224 | struct dynamic_prop bit_stride_prop; | |
19225 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
19226 | if (attr_bit_stride != nullptr) | |
19227 | { | |
19228 | /* It only makes sense to have either a bit or byte stride. */ | |
19229 | if (attr_byte_stride != nullptr) | |
19230 | { | |
19231 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
19232 | "- DIE at %s [in module %s]"), | |
19233 | sect_offset_str (die->sect_off), | |
5e22e966 | 19234 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
19235 | attr_bit_stride = nullptr; |
19236 | } | |
19237 | else | |
19238 | { | |
293e7e51 | 19239 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
19240 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
19241 | prop_type); | |
19242 | } | |
19243 | } | |
19244 | ||
19245 | if (attr_byte_stride != nullptr | |
19246 | || attr_bit_stride != nullptr) | |
19247 | { | |
19248 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
19249 | struct dynamic_prop *stride | |
19250 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
19251 | ||
19252 | range_type | |
19253 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
19254 | &high, bias, stride, byte_stride_p); | |
19255 | } | |
19256 | else | |
19257 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 19258 | |
c451ebe5 | 19259 | if (high_bound_is_count) |
599088e3 | 19260 | range_type->bounds ()->flag_upper_bound_is_count = 1; |
c451ebe5 | 19261 | |
c2ff108b JK |
19262 | /* Ada expects an empty array on no boundary attributes. */ |
19263 | if (attr == NULL && cu->language != language_ada) | |
8c2e4e06 | 19264 | range_type->bounds ()->high.set_undefined (); |
c2ff108b | 19265 | |
39cbfefa DJ |
19266 | name = dwarf2_name (die, cu); |
19267 | if (name) | |
d0e39ea2 | 19268 | range_type->set_name (name); |
6e70227d | 19269 | |
e142c38c | 19270 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 19271 | if (attr != nullptr) |
529908cb | 19272 | TYPE_LENGTH (range_type) = attr->constant_value (0); |
a02abb62 | 19273 | |
2b4424c3 TT |
19274 | maybe_set_alignment (cu, die, range_type); |
19275 | ||
7e314c57 JK |
19276 | set_die_type (die, range_type, cu); |
19277 | ||
19278 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
19279 | set_descriptive_type (range_type, die, cu); |
19280 | ||
7e314c57 | 19281 | return range_type; |
a02abb62 | 19282 | } |
6e70227d | 19283 | |
f792889a | 19284 | static struct type * |
81a17f79 JB |
19285 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
19286 | { | |
19287 | struct type *type; | |
81a17f79 | 19288 | |
5e22e966 | 19289 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 19290 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 19291 | |
74a2f8ff | 19292 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 19293 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
19294 | such a type, we treat it as a stub, and try to resolve it later on, |
19295 | when needed. */ | |
19296 | if (cu->language == language_ada) | |
b4b73759 | 19297 | type->set_is_stub (true); |
74a2f8ff | 19298 | |
f792889a | 19299 | return set_die_type (die, type, cu); |
81a17f79 | 19300 | } |
a02abb62 | 19301 | |
639d11d3 DC |
19302 | /* Read a single die and all its descendents. Set the die's sibling |
19303 | field to NULL; set other fields in the die correctly, and set all | |
19304 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
19305 | location of the info_ptr after reading all of those dies. PARENT | |
19306 | is the parent of the die in question. */ | |
19307 | ||
19308 | static struct die_info * | |
dee91e82 | 19309 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
19310 | const gdb_byte *info_ptr, |
19311 | const gdb_byte **new_info_ptr, | |
dee91e82 | 19312 | struct die_info *parent) |
639d11d3 DC |
19313 | { |
19314 | struct die_info *die; | |
d521ce57 | 19315 | const gdb_byte *cur_ptr; |
639d11d3 | 19316 | |
3e225074 | 19317 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
19318 | if (die == NULL) |
19319 | { | |
19320 | *new_info_ptr = cur_ptr; | |
19321 | return NULL; | |
19322 | } | |
93311388 | 19323 | store_in_ref_table (die, reader->cu); |
639d11d3 | 19324 | |
3e225074 | 19325 | if (die->has_children) |
bf6af496 | 19326 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
19327 | else |
19328 | { | |
19329 | die->child = NULL; | |
19330 | *new_info_ptr = cur_ptr; | |
19331 | } | |
19332 | ||
19333 | die->sibling = NULL; | |
19334 | die->parent = parent; | |
19335 | return die; | |
19336 | } | |
19337 | ||
19338 | /* Read a die, all of its descendents, and all of its siblings; set | |
19339 | all of the fields of all of the dies correctly. Arguments are as | |
19340 | in read_die_and_children. */ | |
19341 | ||
19342 | static struct die_info * | |
bf6af496 | 19343 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
19344 | const gdb_byte *info_ptr, |
19345 | const gdb_byte **new_info_ptr, | |
bf6af496 | 19346 | struct die_info *parent) |
639d11d3 DC |
19347 | { |
19348 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 19349 | const gdb_byte *cur_ptr; |
639d11d3 | 19350 | |
c906108c | 19351 | cur_ptr = info_ptr; |
639d11d3 DC |
19352 | first_die = last_sibling = NULL; |
19353 | ||
19354 | while (1) | |
c906108c | 19355 | { |
639d11d3 | 19356 | struct die_info *die |
dee91e82 | 19357 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 19358 | |
1d325ec1 | 19359 | if (die == NULL) |
c906108c | 19360 | { |
639d11d3 DC |
19361 | *new_info_ptr = cur_ptr; |
19362 | return first_die; | |
c906108c | 19363 | } |
1d325ec1 DJ |
19364 | |
19365 | if (!first_die) | |
19366 | first_die = die; | |
c906108c | 19367 | else |
1d325ec1 DJ |
19368 | last_sibling->sibling = die; |
19369 | ||
19370 | last_sibling = die; | |
c906108c | 19371 | } |
c906108c SS |
19372 | } |
19373 | ||
bf6af496 DE |
19374 | /* Read a die, all of its descendents, and all of its siblings; set |
19375 | all of the fields of all of the dies correctly. Arguments are as | |
19376 | in read_die_and_children. | |
19377 | This the main entry point for reading a DIE and all its children. */ | |
19378 | ||
19379 | static struct die_info * | |
19380 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
19381 | const gdb_byte *info_ptr, |
19382 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
19383 | struct die_info *parent) |
19384 | { | |
19385 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
19386 | new_info_ptr, parent); | |
19387 | ||
b4f54984 | 19388 | if (dwarf_die_debug) |
bf6af496 DE |
19389 | { |
19390 | fprintf_unfiltered (gdb_stdlog, | |
19391 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19392 | reader->die_section->get_name (), |
bf6af496 DE |
19393 | (unsigned) (info_ptr - reader->die_section->buffer), |
19394 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19395 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
19396 | } |
19397 | ||
19398 | return die; | |
19399 | } | |
19400 | ||
3019eac3 DE |
19401 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
19402 | attributes. | |
19403 | The caller is responsible for filling in the extra attributes | |
19404 | and updating (*DIEP)->num_attrs. | |
19405 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19406 | except for its child, sibling, and parent fields. */ |
93311388 | 19407 | |
d521ce57 | 19408 | static const gdb_byte * |
3019eac3 | 19409 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 19410 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 19411 | int num_extra_attrs) |
93311388 | 19412 | { |
b64f50a1 | 19413 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
19414 | struct abbrev_info *abbrev; |
19415 | struct die_info *die; | |
19416 | struct dwarf2_cu *cu = reader->cu; | |
19417 | bfd *abfd = reader->abfd; | |
19418 | ||
9c541725 | 19419 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
19420 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19421 | info_ptr += bytes_read; | |
19422 | if (!abbrev_number) | |
19423 | { | |
19424 | *diep = NULL; | |
93311388 DE |
19425 | return info_ptr; |
19426 | } | |
19427 | ||
685af9cd | 19428 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 19429 | if (!abbrev) |
348e048f DE |
19430 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
19431 | abbrev_number, | |
19432 | bfd_get_filename (abfd)); | |
19433 | ||
3019eac3 | 19434 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 19435 | die->sect_off = sect_off; |
93311388 DE |
19436 | die->tag = abbrev->tag; |
19437 | die->abbrev = abbrev_number; | |
3e225074 | 19438 | die->has_children = abbrev->has_children; |
93311388 | 19439 | |
3019eac3 DE |
19440 | /* Make the result usable. |
19441 | The caller needs to update num_attrs after adding the extra | |
19442 | attributes. */ | |
93311388 DE |
19443 | die->num_attrs = abbrev->num_attrs; |
19444 | ||
7a5f294d | 19445 | bool any_need_reprocess = false; |
93311388 | 19446 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e | 19447 | { |
7a5f294d TT |
19448 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
19449 | info_ptr); | |
19450 | if (die->attrs[i].requires_reprocessing_p ()) | |
19451 | any_need_reprocess = true; | |
18a8505e AT |
19452 | } |
19453 | ||
052c8bb8 | 19454 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
529908cb TT |
19455 | if (attr != nullptr && attr->form_is_unsigned ()) |
19456 | cu->str_offsets_base = attr->as_unsigned (); | |
93311388 | 19457 | |
41144253 | 19458 | attr = die->attr (DW_AT_loclists_base); |
19459 | if (attr != nullptr) | |
529908cb | 19460 | cu->loclist_base = attr->as_unsigned (); |
41144253 | 19461 | |
a39fdb41 | 19462 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
19463 | if (maybe_addr_base.has_value ()) |
19464 | cu->addr_base = *maybe_addr_base; | |
d0ce17d8 CT |
19465 | |
19466 | attr = die->attr (DW_AT_rnglists_base); | |
19467 | if (attr != nullptr) | |
2b0c7f41 | 19468 | cu->rnglists_base = attr->as_unsigned (); |
d0ce17d8 | 19469 | |
7a5f294d TT |
19470 | if (any_need_reprocess) |
19471 | { | |
19472 | for (i = 0; i < abbrev->num_attrs; ++i) | |
19473 | { | |
19474 | if (die->attrs[i].requires_reprocessing_p ()) | |
19475 | read_attribute_reprocess (reader, &die->attrs[i], die->tag); | |
19476 | } | |
19477 | } | |
93311388 | 19478 | *diep = die; |
93311388 DE |
19479 | return info_ptr; |
19480 | } | |
19481 | ||
3019eac3 DE |
19482 | /* Read a die and all its attributes. |
19483 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19484 | except for its child, sibling, and parent fields. */ |
3019eac3 | 19485 | |
d521ce57 | 19486 | static const gdb_byte * |
3019eac3 | 19487 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 19488 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 19489 | { |
d521ce57 | 19490 | const gdb_byte *result; |
bf6af496 | 19491 | |
3e225074 | 19492 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 19493 | |
b4f54984 | 19494 | if (dwarf_die_debug) |
bf6af496 DE |
19495 | { |
19496 | fprintf_unfiltered (gdb_stdlog, | |
19497 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19498 | reader->die_section->get_name (), |
bf6af496 DE |
19499 | (unsigned) (info_ptr - reader->die_section->buffer), |
19500 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19501 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
19502 | } |
19503 | ||
19504 | return result; | |
3019eac3 | 19505 | } |
433df2d4 | 19506 | \f |
c906108c | 19507 | |
72bf9492 DJ |
19508 | /* Returns nonzero if TAG represents a type that we might generate a partial |
19509 | symbol for. */ | |
19510 | ||
19511 | static int | |
d8f62e84 | 19512 | is_type_tag_for_partial (int tag, enum language lang) |
72bf9492 DJ |
19513 | { |
19514 | switch (tag) | |
19515 | { | |
19516 | #if 0 | |
19517 | /* Some types that would be reasonable to generate partial symbols for, | |
d8f62e84 TT |
19518 | that we don't at present. Note that normally this does not |
19519 | matter, mainly because C compilers don't give names to these | |
19520 | types, but instead emit DW_TAG_typedef. */ | |
72bf9492 DJ |
19521 | case DW_TAG_file_type: |
19522 | case DW_TAG_ptr_to_member_type: | |
19523 | case DW_TAG_set_type: | |
19524 | case DW_TAG_string_type: | |
19525 | case DW_TAG_subroutine_type: | |
19526 | #endif | |
d8f62e84 TT |
19527 | |
19528 | /* GNAT may emit an array with a name, but no typedef, so we | |
19529 | need to make a symbol in this case. */ | |
19530 | case DW_TAG_array_type: | |
19531 | return lang == language_ada; | |
19532 | ||
72bf9492 DJ |
19533 | case DW_TAG_base_type: |
19534 | case DW_TAG_class_type: | |
680b30c7 | 19535 | case DW_TAG_interface_type: |
72bf9492 DJ |
19536 | case DW_TAG_enumeration_type: |
19537 | case DW_TAG_structure_type: | |
19538 | case DW_TAG_subrange_type: | |
19539 | case DW_TAG_typedef: | |
19540 | case DW_TAG_union_type: | |
19541 | return 1; | |
19542 | default: | |
19543 | return 0; | |
19544 | } | |
19545 | } | |
19546 | ||
19547 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
19548 | ||
19549 | static struct partial_die_info * | |
dee91e82 | 19550 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 19551 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 19552 | { |
dee91e82 | 19553 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19554 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 19555 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 19556 | unsigned int bytes_read; |
5afb4e99 | 19557 | unsigned int load_all = 0; |
72bf9492 DJ |
19558 | int nesting_level = 1; |
19559 | ||
19560 | parent_die = NULL; | |
19561 | last_die = NULL; | |
19562 | ||
7adf1e79 DE |
19563 | gdb_assert (cu->per_cu != NULL); |
19564 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
19565 | load_all = 1; |
19566 | ||
72bf9492 DJ |
19567 | cu->partial_dies |
19568 | = htab_create_alloc_ex (cu->header.length / 12, | |
19569 | partial_die_hash, | |
19570 | partial_die_eq, | |
19571 | NULL, | |
19572 | &cu->comp_unit_obstack, | |
19573 | hashtab_obstack_allocate, | |
19574 | dummy_obstack_deallocate); | |
19575 | ||
72bf9492 DJ |
19576 | while (1) |
19577 | { | |
685af9cd | 19578 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
19579 | |
19580 | /* A NULL abbrev means the end of a series of children. */ | |
19581 | if (abbrev == NULL) | |
19582 | { | |
19583 | if (--nesting_level == 0) | |
cd9983dd YQ |
19584 | return first_die; |
19585 | ||
72bf9492 DJ |
19586 | info_ptr += bytes_read; |
19587 | last_die = parent_die; | |
19588 | parent_die = parent_die->die_parent; | |
19589 | continue; | |
19590 | } | |
19591 | ||
98bfdba5 PA |
19592 | /* Check for template arguments. We never save these; if |
19593 | they're seen, we just mark the parent, and go on our way. */ | |
19594 | if (parent_die != NULL | |
19595 | && cu->language == language_cplus | |
19596 | && (abbrev->tag == DW_TAG_template_type_param | |
19597 | || abbrev->tag == DW_TAG_template_value_param)) | |
19598 | { | |
19599 | parent_die->has_template_arguments = 1; | |
19600 | ||
19601 | if (!load_all) | |
19602 | { | |
19603 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 19604 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19605 | continue; |
19606 | } | |
19607 | } | |
19608 | ||
0d99eb77 | 19609 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
19610 | Skip their other children. */ |
19611 | if (!load_all | |
19612 | && cu->language == language_cplus | |
19613 | && parent_die != NULL | |
f9b5d5ea TV |
19614 | && parent_die->tag == DW_TAG_subprogram |
19615 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 19616 | { |
dee91e82 | 19617 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19618 | continue; |
19619 | } | |
19620 | ||
5afb4e99 DJ |
19621 | /* Check whether this DIE is interesting enough to save. Normally |
19622 | we would not be interested in members here, but there may be | |
19623 | later variables referencing them via DW_AT_specification (for | |
19624 | static members). */ | |
19625 | if (!load_all | |
d8f62e84 | 19626 | && !is_type_tag_for_partial (abbrev->tag, cu->language) |
72929c62 | 19627 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
19628 | && abbrev->tag != DW_TAG_enumerator |
19629 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 19630 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 19631 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 19632 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 19633 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 19634 | && abbrev->tag != DW_TAG_module |
95554aad | 19635 | && abbrev->tag != DW_TAG_member |
74921315 KS |
19636 | && abbrev->tag != DW_TAG_imported_unit |
19637 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
19638 | { |
19639 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19640 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
19641 | continue; |
19642 | } | |
19643 | ||
6f06d47b YQ |
19644 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
19645 | abbrev); | |
cd9983dd | 19646 | |
48fbe735 | 19647 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
19648 | |
19649 | /* This two-pass algorithm for processing partial symbols has a | |
19650 | high cost in cache pressure. Thus, handle some simple cases | |
19651 | here which cover the majority of C partial symbols. DIEs | |
19652 | which neither have specification tags in them, nor could have | |
19653 | specification tags elsewhere pointing at them, can simply be | |
19654 | processed and discarded. | |
19655 | ||
19656 | This segment is also optional; scan_partial_symbols and | |
19657 | add_partial_symbol will handle these DIEs if we chain | |
19658 | them in normally. When compilers which do not emit large | |
19659 | quantities of duplicate debug information are more common, | |
19660 | this code can probably be removed. */ | |
19661 | ||
19662 | /* Any complete simple types at the top level (pretty much all | |
19663 | of them, for a language without namespaces), can be processed | |
19664 | directly. */ | |
19665 | if (parent_die == NULL | |
cd9983dd YQ |
19666 | && pdi.has_specification == 0 |
19667 | && pdi.is_declaration == 0 | |
19668 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
19669 | || pdi.tag == DW_TAG_base_type | |
d8f62e84 | 19670 | || pdi.tag == DW_TAG_array_type |
cd9983dd | 19671 | || pdi.tag == DW_TAG_subrange_type)) |
72bf9492 | 19672 | { |
7d00ffec | 19673 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
19674 | add_partial_symbol (&pdi, cu); |
19675 | ||
cd9983dd | 19676 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19677 | continue; |
19678 | } | |
19679 | ||
d8228535 JK |
19680 | /* The exception for DW_TAG_typedef with has_children above is |
19681 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 19682 | type_name_or_error will error on such types later. |
d8228535 JK |
19683 | |
19684 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
19685 | it could not find the child DIEs referenced later, this is checked | |
19686 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
19687 | ||
cd9983dd | 19688 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 19689 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 19690 | "- DIE at %s [in module %s]"), |
cd9983dd | 19691 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 19692 | |
72bf9492 DJ |
19693 | /* If we're at the second level, and we're an enumerator, and |
19694 | our parent has no specification (meaning possibly lives in a | |
19695 | namespace elsewhere), then we can add the partial symbol now | |
19696 | instead of queueing it. */ | |
cd9983dd | 19697 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
19698 | && parent_die != NULL |
19699 | && parent_die->die_parent == NULL | |
19700 | && parent_die->tag == DW_TAG_enumeration_type | |
19701 | && parent_die->has_specification == 0) | |
19702 | { | |
7d00ffec | 19703 | if (pdi.raw_name == NULL) |
b98664d3 | 19704 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 19705 | else if (building_psymtab) |
f0fbb768 | 19706 | add_partial_symbol (&pdi, cu); |
72bf9492 | 19707 | |
cd9983dd | 19708 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19709 | continue; |
19710 | } | |
19711 | ||
cd9983dd | 19712 | struct partial_die_info *part_die |
6f06d47b | 19713 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 19714 | |
72bf9492 DJ |
19715 | /* We'll save this DIE so link it in. */ |
19716 | part_die->die_parent = parent_die; | |
19717 | part_die->die_sibling = NULL; | |
19718 | part_die->die_child = NULL; | |
19719 | ||
19720 | if (last_die && last_die == parent_die) | |
19721 | last_die->die_child = part_die; | |
19722 | else if (last_die) | |
19723 | last_die->die_sibling = part_die; | |
19724 | ||
19725 | last_die = part_die; | |
19726 | ||
19727 | if (first_die == NULL) | |
19728 | first_die = part_die; | |
19729 | ||
19730 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
19731 | find interesting need to be in the hash table, because we | |
19732 | also have the parent/sibling/child chains; only those that we | |
19733 | might refer to by offset later during partial symbol reading. | |
19734 | ||
19735 | For now this means things that might have be the target of a | |
19736 | DW_AT_specification, DW_AT_abstract_origin, or | |
19737 | DW_AT_extension. DW_AT_extension will refer only to | |
19738 | namespaces; DW_AT_abstract_origin refers to functions (and | |
19739 | many things under the function DIE, but we do not recurse | |
19740 | into function DIEs during partial symbol reading) and | |
19741 | possibly variables as well; DW_AT_specification refers to | |
19742 | declarations. Declarations ought to have the DW_AT_declaration | |
19743 | flag. It happens that GCC forgets to put it in sometimes, but | |
19744 | only for functions, not for types. | |
19745 | ||
19746 | Adding more things than necessary to the hash table is harmless | |
19747 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
19748 | wasted time in find_partial_die, when we reread the compilation |
19749 | unit with load_all_dies set. */ | |
72bf9492 | 19750 | |
5afb4e99 | 19751 | if (load_all |
72929c62 | 19752 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 19753 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
19754 | || abbrev->tag == DW_TAG_variable |
19755 | || abbrev->tag == DW_TAG_namespace | |
19756 | || part_die->is_declaration) | |
19757 | { | |
19758 | void **slot; | |
19759 | ||
19760 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
19761 | to_underlying (part_die->sect_off), |
19762 | INSERT); | |
72bf9492 DJ |
19763 | *slot = part_die; |
19764 | } | |
19765 | ||
72bf9492 | 19766 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 19767 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
19768 | languages we have to, so that we can get at method physnames |
19769 | to infer fully qualified class names, for DW_AT_specification, | |
19770 | and for C++ template arguments. For C++, we also look one level | |
19771 | inside functions to find template arguments (if the name of the | |
19772 | function does not already contain the template arguments). | |
bc30ff58 | 19773 | |
0a4b0913 AB |
19774 | For Ada and Fortran, we need to scan the children of subprograms |
19775 | and lexical blocks as well because these languages allow the | |
19776 | definition of nested entities that could be interesting for the | |
19777 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 19778 | if (last_die->has_children |
5afb4e99 DJ |
19779 | && (load_all |
19780 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 19781 | || last_die->tag == DW_TAG_module |
72bf9492 | 19782 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
19783 | || (cu->language == language_cplus |
19784 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
19785 | && (last_die->raw_name == NULL |
19786 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
19787 | || (cu->language != language_c |
19788 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 19789 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 19790 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 19791 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
19792 | || ((cu->language == language_ada |
19793 | || cu->language == language_fortran) | |
bc30ff58 JB |
19794 | && (last_die->tag == DW_TAG_subprogram |
19795 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
19796 | { |
19797 | nesting_level++; | |
19798 | parent_die = last_die; | |
19799 | continue; | |
19800 | } | |
19801 | ||
19802 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19803 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
19804 | |
19805 | /* Back to the top, do it again. */ | |
19806 | } | |
19807 | } | |
19808 | ||
6f06d47b YQ |
19809 | partial_die_info::partial_die_info (sect_offset sect_off_, |
19810 | struct abbrev_info *abbrev) | |
19811 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
19812 | { | |
19813 | } | |
19814 | ||
7d00ffec TT |
19815 | /* See class definition. */ |
19816 | ||
19817 | const char * | |
19818 | partial_die_info::name (dwarf2_cu *cu) | |
19819 | { | |
19820 | if (!canonical_name && raw_name != nullptr) | |
19821 | { | |
19822 | struct objfile *objfile = cu->per_objfile->objfile; | |
19823 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
19824 | canonical_name = 1; | |
19825 | } | |
19826 | ||
19827 | return raw_name; | |
19828 | } | |
19829 | ||
35cc7ed7 YQ |
19830 | /* Read a minimal amount of information into the minimal die structure. |
19831 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 19832 | |
48fbe735 YQ |
19833 | const gdb_byte * |
19834 | partial_die_info::read (const struct die_reader_specs *reader, | |
19835 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 19836 | { |
dee91e82 | 19837 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 19838 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 19839 | unsigned int i; |
c5aa993b | 19840 | int has_low_pc_attr = 0; |
c906108c | 19841 | int has_high_pc_attr = 0; |
91da1414 | 19842 | int high_pc_relative = 0; |
c906108c | 19843 | |
fd0a254f | 19844 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 19845 | { |
e7da7f8f | 19846 | attribute attr; |
7a5f294d | 19847 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
18a8505e | 19848 | /* String and address offsets that need to do the reprocessing have |
dda83cd7 | 19849 | already been read at this point, so there is no need to wait until |
18a8505e | 19850 | the loop terminates to do the reprocessing. */ |
7a5f294d | 19851 | if (attr.requires_reprocessing_p ()) |
d0ce17d8 | 19852 | read_attribute_reprocess (reader, &attr, tag); |
c906108c | 19853 | /* Store the data if it is of an attribute we want to keep in a |
dda83cd7 | 19854 | partial symbol table. */ |
c906108c SS |
19855 | switch (attr.name) |
19856 | { | |
19857 | case DW_AT_name: | |
48fbe735 | 19858 | switch (tag) |
71c25dea TT |
19859 | { |
19860 | case DW_TAG_compile_unit: | |
95554aad | 19861 | case DW_TAG_partial_unit: |
348e048f | 19862 | case DW_TAG_type_unit: |
71c25dea TT |
19863 | /* Compilation units have a DW_AT_name that is a filename, not |
19864 | a source language identifier. */ | |
19865 | case DW_TAG_enumeration_type: | |
19866 | case DW_TAG_enumerator: | |
19867 | /* These tags always have simple identifiers already; no need | |
19868 | to canonicalize them. */ | |
7d00ffec | 19869 | canonical_name = 1; |
2c830f54 | 19870 | raw_name = attr.as_string (); |
71c25dea TT |
19871 | break; |
19872 | default: | |
7d00ffec | 19873 | canonical_name = 0; |
2c830f54 | 19874 | raw_name = attr.as_string (); |
71c25dea TT |
19875 | break; |
19876 | } | |
c906108c | 19877 | break; |
31ef98ae | 19878 | case DW_AT_linkage_name: |
c906108c | 19879 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
19880 | /* Note that both forms of linkage name might appear. We |
19881 | assume they will be the same, and we only store the last | |
19882 | one we see. */ | |
95f982e5 | 19883 | linkage_name = attr.as_string (); |
c906108c SS |
19884 | break; |
19885 | case DW_AT_low_pc: | |
19886 | has_low_pc_attr = 1; | |
95f982e5 | 19887 | lowpc = attr.as_address (); |
c906108c SS |
19888 | break; |
19889 | case DW_AT_high_pc: | |
19890 | has_high_pc_attr = 1; | |
95f982e5 | 19891 | highpc = attr.as_address (); |
cd6c91b4 | 19892 | if (cu->header.version >= 4 && attr.form_is_constant ()) |
31aa7e4e | 19893 | high_pc_relative = 1; |
c906108c SS |
19894 | break; |
19895 | case DW_AT_location: | |
dda83cd7 SM |
19896 | /* Support the .debug_loc offsets. */ |
19897 | if (attr.form_is_block ()) | |
19898 | { | |
9d2246fc | 19899 | d.locdesc = attr.as_block (); |
dda83cd7 SM |
19900 | } |
19901 | else if (attr.form_is_section_offset ()) | |
19902 | { | |
4d3c2250 | 19903 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 SM |
19904 | } |
19905 | else | |
19906 | { | |
4d3c2250 KB |
19907 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
19908 | "partial symbol information"); | |
dda83cd7 | 19909 | } |
c906108c | 19910 | break; |
c906108c | 19911 | case DW_AT_external: |
c45bc3f8 | 19912 | is_external = attr.as_boolean (); |
c906108c SS |
19913 | break; |
19914 | case DW_AT_declaration: | |
c45bc3f8 | 19915 | is_declaration = attr.as_boolean (); |
c906108c SS |
19916 | break; |
19917 | case DW_AT_type: | |
48fbe735 | 19918 | has_type = 1; |
c906108c SS |
19919 | break; |
19920 | case DW_AT_abstract_origin: | |
19921 | case DW_AT_specification: | |
72bf9492 | 19922 | case DW_AT_extension: |
48fbe735 | 19923 | has_specification = 1; |
0826b30a | 19924 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 19925 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 19926 | || cu->per_cu->is_dwz); |
c906108c SS |
19927 | break; |
19928 | case DW_AT_sibling: | |
19929 | /* Ignore absolute siblings, they might point outside of | |
19930 | the current compile unit. */ | |
19931 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19932 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19933 | else |
b9502d3f | 19934 | { |
48fbe735 | 19935 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 19936 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 19937 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
19938 | |
19939 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19940 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 19941 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 19942 | reader->die_section->overflow_complaint (); |
b9502d3f | 19943 | else |
48fbe735 | 19944 | sibling = sibling_ptr; |
b9502d3f | 19945 | } |
c906108c | 19946 | break; |
dda83cd7 SM |
19947 | case DW_AT_byte_size: |
19948 | has_byte_size = 1; | |
19949 | break; | |
19950 | case DW_AT_const_value: | |
19951 | has_const_value = 1; | |
19952 | break; | |
68511cec CES |
19953 | case DW_AT_calling_convention: |
19954 | /* DWARF doesn't provide a way to identify a program's source-level | |
19955 | entry point. DW_AT_calling_convention attributes are only meant | |
19956 | to describe functions' calling conventions. | |
19957 | ||
19958 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19959 | Fortran, and before DWARF 4 DW_CC_program was the only |
19960 | piece of debugging information whose definition refers to | |
19961 | a 'main program' at all, several compilers marked Fortran | |
19962 | main programs with DW_CC_program --- even when those | |
19963 | functions use the standard calling conventions. | |
19964 | ||
19965 | Although DWARF now specifies a way to provide this | |
19966 | information, we support this practice for backward | |
19967 | compatibility. */ | |
529908cb | 19968 | if (attr.constant_value (0) == DW_CC_program |
0c1b455e | 19969 | && cu->language == language_fortran) |
48fbe735 | 19970 | main_subprogram = 1; |
68511cec | 19971 | break; |
481860b3 | 19972 | case DW_AT_inline: |
529908cb TT |
19973 | { |
19974 | LONGEST value = attr.constant_value (-1); | |
19975 | if (value == DW_INL_inlined | |
19976 | || value == DW_INL_declared_inlined) | |
19977 | may_be_inlined = 1; | |
19978 | } | |
481860b3 | 19979 | break; |
95554aad TT |
19980 | |
19981 | case DW_AT_import: | |
48fbe735 | 19982 | if (tag == DW_TAG_imported_unit) |
36586728 | 19983 | { |
0826b30a | 19984 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 19985 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
19986 | || cu->per_cu->is_dwz); |
19987 | } | |
95554aad TT |
19988 | break; |
19989 | ||
0c1b455e | 19990 | case DW_AT_main_subprogram: |
c45bc3f8 | 19991 | main_subprogram = attr.as_boolean (); |
0c1b455e TT |
19992 | break; |
19993 | ||
05caa1d2 TT |
19994 | case DW_AT_ranges: |
19995 | { | |
2b0c7f41 SM |
19996 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
19997 | on DWARF version). */ | |
19998 | ULONGEST ranges_offset = attr.as_unsigned (); | |
19999 | ||
20000 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
20001 | this value. */ | |
20002 | if (tag != DW_TAG_compile_unit) | |
20003 | ranges_offset += cu->gnu_ranges_base; | |
20004 | ||
05caa1d2 | 20005 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, |
d0ce17d8 | 20006 | nullptr, tag)) |
05caa1d2 TT |
20007 | has_pc_info = 1; |
20008 | } | |
20009 | break; | |
20010 | ||
c906108c SS |
20011 | default: |
20012 | break; | |
20013 | } | |
20014 | } | |
20015 | ||
10d06d82 TT |
20016 | /* For Ada, if both the name and the linkage name appear, we prefer |
20017 | the latter. This lets "catch exception" work better, regardless | |
20018 | of the order in which the name and linkage name were emitted. | |
20019 | Really, though, this is just a workaround for the fact that gdb | |
20020 | doesn't store both the name and the linkage name. */ | |
20021 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 20022 | raw_name = linkage_name; |
10d06d82 | 20023 | |
91da1414 | 20024 | if (high_pc_relative) |
48fbe735 | 20025 | highpc += lowpc; |
91da1414 | 20026 | |
9373cf26 JK |
20027 | if (has_low_pc_attr && has_high_pc_attr) |
20028 | { | |
20029 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
20030 | eliminate duplicate copies of functions and vtables and such. | |
20031 | The linker will arbitrarily choose one and discard the others. | |
20032 | The AT_*_pc values for such functions refer to local labels in | |
20033 | these sections. If the section from that file was discarded, the | |
20034 | labels are not in the output, so the relocs get a value of 0. | |
20035 | If this is a discarded function, mark the pc bounds as invalid, | |
20036 | so that GDB will ignore it. */ | |
976ca316 | 20037 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 20038 | { |
976ca316 | 20039 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 20040 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 20041 | |
b98664d3 | 20042 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 20043 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
20044 | paddress (gdbarch, lowpc), |
20045 | sect_offset_str (sect_off), | |
9d8780f0 | 20046 | objfile_name (objfile)); |
9373cf26 JK |
20047 | } |
20048 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 20049 | else if (lowpc >= highpc) |
9373cf26 | 20050 | { |
976ca316 | 20051 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 20052 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 20053 | |
b98664d3 | 20054 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 20055 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
20056 | paddress (gdbarch, lowpc), |
20057 | paddress (gdbarch, highpc), | |
20058 | sect_offset_str (sect_off), | |
9c541725 | 20059 | objfile_name (objfile)); |
9373cf26 JK |
20060 | } |
20061 | else | |
48fbe735 | 20062 | has_pc_info = 1; |
9373cf26 | 20063 | } |
85cbf3d3 | 20064 | |
c906108c SS |
20065 | return info_ptr; |
20066 | } | |
20067 | ||
72bf9492 DJ |
20068 | /* Find a cached partial DIE at OFFSET in CU. */ |
20069 | ||
d590ff25 YQ |
20070 | struct partial_die_info * |
20071 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
20072 | { |
20073 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 20074 | struct partial_die_info part_die (sect_off); |
72bf9492 | 20075 | |
9a3c8263 | 20076 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 20077 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 20078 | to_underlying (sect_off))); |
72bf9492 | 20079 | |
72bf9492 DJ |
20080 | return lookup_die; |
20081 | } | |
20082 | ||
348e048f DE |
20083 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
20084 | except in the case of .debug_types DIEs which do not reference | |
20085 | outside their CU (they do however referencing other types via | |
55f1336d | 20086 | DW_FORM_ref_sig8). */ |
72bf9492 | 20087 | |
122cf0f2 | 20088 | static const struct cu_partial_die_info |
9c541725 | 20089 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 20090 | { |
976ca316 SM |
20091 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20092 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 20093 | struct partial_die_info *pd = NULL; |
72bf9492 | 20094 | |
36586728 | 20095 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 20096 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 20097 | { |
d590ff25 | 20098 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 20099 | if (pd != NULL) |
fb816e8b | 20100 | return { cu, pd }; |
0d99eb77 DE |
20101 | /* We missed recording what we needed. |
20102 | Load all dies and try again. */ | |
5afb4e99 | 20103 | } |
0d99eb77 DE |
20104 | else |
20105 | { | |
20106 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 20107 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 20108 | { |
9d8780f0 SM |
20109 | error (_("Dwarf Error: Type Unit at offset %s contains" |
20110 | " external reference to offset %s [in module %s].\n"), | |
20111 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
20112 | bfd_get_filename (objfile->obfd)); |
20113 | } | |
7188ed02 SM |
20114 | dwarf2_per_cu_data *per_cu |
20115 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 20116 | per_objfile); |
72bf9492 | 20117 | |
976ca316 | 20118 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 20119 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 20120 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 20121 | |
976ca316 | 20122 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
20123 | |
20124 | cu->last_used = 0; | |
20125 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 20126 | } |
5afb4e99 | 20127 | |
dee91e82 DE |
20128 | /* If we didn't find it, and not all dies have been loaded, |
20129 | load them all and try again. */ | |
20130 | ||
7188ed02 | 20131 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 20132 | { |
7188ed02 | 20133 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
20134 | |
20135 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
20136 | THIS_CU->cu may already be in use. So we can't just free it and | |
20137 | replace its DIEs with the ones we read in. Instead, we leave those | |
20138 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
20139 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
20140 | set. */ | |
976ca316 | 20141 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 20142 | |
7188ed02 | 20143 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
20144 | } |
20145 | ||
20146 | if (pd == NULL) | |
521894aa | 20147 | error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"), |
9d8780f0 | 20148 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 20149 | return { cu, pd }; |
72bf9492 DJ |
20150 | } |
20151 | ||
abc72ce4 DE |
20152 | /* See if we can figure out if the class lives in a namespace. We do |
20153 | this by looking for a member function; its demangled name will | |
20154 | contain namespace info, if there is any. */ | |
20155 | ||
20156 | static void | |
20157 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
20158 | struct dwarf2_cu *cu) | |
20159 | { | |
20160 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
20161 | what template types look like, because the demangler | |
20162 | frequently doesn't give the same name as the debug info. We | |
20163 | could fix this by only using the demangled name to get the | |
20164 | prefix (but see comment in read_structure_type). */ | |
20165 | ||
20166 | struct partial_die_info *real_pdi; | |
20167 | struct partial_die_info *child_pdi; | |
20168 | ||
20169 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
20170 | we should not do this. We'll prepend the parent's fully qualified | |
20171 | name when we create the partial symbol. */ | |
20172 | ||
20173 | real_pdi = struct_pdi; | |
20174 | while (real_pdi->has_specification) | |
fb816e8b | 20175 | { |
122cf0f2 AB |
20176 | auto res = find_partial_die (real_pdi->spec_offset, |
20177 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
20178 | real_pdi = res.pdi; |
20179 | cu = res.cu; | |
20180 | } | |
abc72ce4 DE |
20181 | |
20182 | if (real_pdi->die_parent != NULL) | |
20183 | return; | |
20184 | ||
20185 | for (child_pdi = struct_pdi->die_child; | |
20186 | child_pdi != NULL; | |
20187 | child_pdi = child_pdi->die_sibling) | |
20188 | { | |
20189 | if (child_pdi->tag == DW_TAG_subprogram | |
20190 | && child_pdi->linkage_name != NULL) | |
20191 | { | |
43816ebc | 20192 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
20193 | (cu->language_defn->class_name_from_physname |
20194 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
20195 | if (actual_class_name != NULL) |
20196 | { | |
5e22e966 | 20197 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
20198 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
20199 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
20200 | } |
20201 | break; | |
20202 | } | |
20203 | } | |
20204 | } | |
20205 | ||
25c11aca TV |
20206 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
20207 | attribute. */ | |
20208 | ||
20209 | static bool | |
20210 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
20211 | { | |
20212 | switch (tag) | |
20213 | { | |
20214 | case DW_TAG_constant: | |
20215 | case DW_TAG_enumerator: | |
20216 | case DW_TAG_formal_parameter: | |
20217 | case DW_TAG_template_value_param: | |
20218 | case DW_TAG_variable: | |
20219 | return true; | |
20220 | } | |
20221 | ||
20222 | return false; | |
20223 | } | |
20224 | ||
52356b79 YQ |
20225 | void |
20226 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 20227 | { |
abc72ce4 DE |
20228 | /* Once we've fixed up a die, there's no point in doing so again. |
20229 | This also avoids a memory leak if we were to call | |
20230 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 20231 | if (fixup_called) |
abc72ce4 DE |
20232 | return; |
20233 | ||
72bf9492 DJ |
20234 | /* If we found a reference attribute and the DIE has no name, try |
20235 | to find a name in the referred to DIE. */ | |
20236 | ||
7d00ffec | 20237 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
20238 | { |
20239 | struct partial_die_info *spec_die; | |
72bf9492 | 20240 | |
122cf0f2 | 20241 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
20242 | spec_die = res.pdi; |
20243 | cu = res.cu; | |
72bf9492 | 20244 | |
52356b79 | 20245 | spec_die->fixup (cu); |
72bf9492 | 20246 | |
7d00ffec | 20247 | if (spec_die->raw_name) |
72bf9492 | 20248 | { |
7d00ffec TT |
20249 | raw_name = spec_die->raw_name; |
20250 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
20251 | |
20252 | /* Copy DW_AT_external attribute if it is set. */ | |
20253 | if (spec_die->is_external) | |
52356b79 | 20254 | is_external = spec_die->is_external; |
72bf9492 DJ |
20255 | } |
20256 | } | |
20257 | ||
25c11aca TV |
20258 | if (!has_const_value && has_specification |
20259 | && can_have_DW_AT_const_value_p (tag)) | |
20260 | { | |
20261 | struct partial_die_info *spec_die; | |
20262 | ||
20263 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
20264 | spec_die = res.pdi; | |
20265 | cu = res.cu; | |
20266 | ||
20267 | spec_die->fixup (cu); | |
20268 | ||
20269 | if (spec_die->has_const_value) | |
20270 | { | |
20271 | /* Copy DW_AT_const_value attribute if it is set. */ | |
20272 | has_const_value = spec_die->has_const_value; | |
20273 | } | |
20274 | } | |
20275 | ||
72bf9492 | 20276 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 20277 | |
7d00ffec TT |
20278 | if (raw_name == NULL && tag == DW_TAG_namespace) |
20279 | { | |
20280 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
20281 | canonical_name = 1; | |
20282 | } | |
72bf9492 | 20283 | |
abc72ce4 DE |
20284 | /* If there is no parent die to provide a namespace, and there are |
20285 | children, see if we can determine the namespace from their linkage | |
122d1940 | 20286 | name. */ |
abc72ce4 | 20287 | if (cu->language == language_cplus |
5e22e966 | 20288 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
20289 | && die_parent == NULL |
20290 | && has_children | |
20291 | && (tag == DW_TAG_class_type | |
20292 | || tag == DW_TAG_structure_type | |
20293 | || tag == DW_TAG_union_type)) | |
20294 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 20295 | |
53832f31 TT |
20296 | /* GCC might emit a nameless struct or union that has a linkage |
20297 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 20298 | if (raw_name == NULL |
52356b79 YQ |
20299 | && (tag == DW_TAG_class_type |
20300 | || tag == DW_TAG_interface_type | |
20301 | || tag == DW_TAG_structure_type | |
20302 | || tag == DW_TAG_union_type) | |
20303 | && linkage_name != NULL) | |
53832f31 | 20304 | { |
43816ebc TT |
20305 | gdb::unique_xmalloc_ptr<char> demangled |
20306 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
20307 | if (demangled != nullptr) | |
53832f31 | 20308 | { |
96408a79 SA |
20309 | const char *base; |
20310 | ||
20311 | /* Strip any leading namespaces/classes, keep only the base name. | |
20312 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
20313 | base = strrchr (demangled.get (), ':'); |
20314 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
20315 | base++; |
20316 | else | |
43816ebc | 20317 | base = demangled.get (); |
96408a79 | 20318 | |
5e22e966 | 20319 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
20320 | raw_name = objfile->intern (base); |
20321 | canonical_name = 1; | |
53832f31 TT |
20322 | } |
20323 | } | |
20324 | ||
52356b79 | 20325 | fixup_called = 1; |
72bf9492 DJ |
20326 | } |
20327 | ||
d0ce17d8 | 20328 | /* Read the .debug_loclists or .debug_rnglists header (they are the same format) |
a1c40103 SM |
20329 | contents from the given SECTION in the HEADER. |
20330 | ||
20331 | HEADER_OFFSET is the offset of the header in the section. */ | |
41144253 | 20332 | static void |
d0ce17d8 | 20333 | read_loclists_rnglists_header (struct loclists_rnglists_header *header, |
a1c40103 SM |
20334 | struct dwarf2_section_info *section, |
20335 | sect_offset header_offset) | |
41144253 | 20336 | { |
20337 | unsigned int bytes_read; | |
20338 | bfd *abfd = section->get_bfd_owner (); | |
a1c40103 SM |
20339 | const gdb_byte *info_ptr = section->buffer + to_underlying (header_offset); |
20340 | ||
41144253 | 20341 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); |
20342 | info_ptr += bytes_read; | |
a1c40103 | 20343 | |
41144253 | 20344 | header->version = read_2_bytes (abfd, info_ptr); |
20345 | info_ptr += 2; | |
a1c40103 | 20346 | |
41144253 | 20347 | header->addr_size = read_1_byte (abfd, info_ptr); |
20348 | info_ptr += 1; | |
a1c40103 | 20349 | |
41144253 | 20350 | header->segment_collector_size = read_1_byte (abfd, info_ptr); |
20351 | info_ptr += 1; | |
a1c40103 | 20352 | |
41144253 | 20353 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); |
20354 | } | |
20355 | ||
20356 | /* Return the DW_AT_loclists_base value for the CU. */ | |
20357 | static ULONGEST | |
20358 | lookup_loclist_base (struct dwarf2_cu *cu) | |
20359 | { | |
20360 | /* For the .dwo unit, the loclist_base points to the first offset following | |
20361 | the header. The header consists of the following entities- | |
20362 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
20363 | bit format) | |
20364 | 2. version (2 bytes) | |
20365 | 3. address size (1 byte) | |
20366 | 4. segment selector size (1 byte) | |
20367 | 5. offset entry count (4 bytes) | |
20368 | These sizes are derived as per the DWARFv5 standard. */ | |
20369 | if (cu->dwo_unit != nullptr) | |
20370 | { | |
20371 | if (cu->header.initial_length_size == 4) | |
20372 | return LOCLIST_HEADER_SIZE32; | |
20373 | return LOCLIST_HEADER_SIZE64; | |
20374 | } | |
20375 | return cu->loclist_base; | |
20376 | } | |
20377 | ||
20378 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
20379 | array of offsets in the .debug_loclists section. */ | |
e57933dc SM |
20380 | |
20381 | static sect_offset | |
41144253 | 20382 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) |
20383 | { | |
976ca316 SM |
20384 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20385 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 20386 | bfd *abfd = objfile->obfd; |
a1c40103 SM |
20387 | ULONGEST loclist_header_size = |
20388 | (cu->header.initial_length_size == 4 ? LOCLIST_HEADER_SIZE32 | |
20389 | : LOCLIST_HEADER_SIZE64); | |
41144253 | 20390 | ULONGEST loclist_base = lookup_loclist_base (cu); |
05787bad SM |
20391 | |
20392 | /* Offset in .debug_loclists of the offset for LOCLIST_INDEX. */ | |
20393 | ULONGEST start_offset = | |
20394 | loclist_base + loclist_index * cu->header.offset_size; | |
20395 | ||
a1c40103 | 20396 | /* Get loclists section. */ |
41144253 | 20397 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
20398 | ||
a1c40103 | 20399 | /* Read the loclists section content. */ |
41144253 | 20400 | section->read (objfile); |
20401 | if (section->buffer == NULL) | |
a0c1eeba SM |
20402 | error (_("DW_FORM_loclistx used without .debug_loclists " |
20403 | "section [in module %s]"), objfile_name (objfile)); | |
20404 | ||
a1c40103 SM |
20405 | /* DW_AT_loclists_base points after the .debug_loclists contribution header, |
20406 | so if loclist_base is smaller than the header size, we have a problem. */ | |
20407 | if (loclist_base < loclist_header_size) | |
20408 | error (_("DW_AT_loclists_base is smaller than header size [in module %s]"), | |
20409 | objfile_name (objfile)); | |
20410 | ||
20411 | /* Read the header of the loclists contribution. */ | |
d0ce17d8 | 20412 | struct loclists_rnglists_header header; |
a1c40103 SM |
20413 | read_loclists_rnglists_header (&header, section, |
20414 | (sect_offset) (loclist_base - loclist_header_size)); | |
20415 | ||
20416 | /* Verify the loclist index is valid. */ | |
41144253 | 20417 | if (loclist_index >= header.offset_entry_count) |
a0c1eeba SM |
20418 | error (_("DW_FORM_loclistx pointing outside of " |
20419 | ".debug_loclists offset array [in module %s]"), | |
20420 | objfile_name (objfile)); | |
20421 | ||
05787bad SM |
20422 | /* Validate that reading won't go beyond the end of the section. */ |
20423 | if (start_offset + cu->header.offset_size > section->size) | |
20424 | error (_("Reading DW_FORM_loclistx index beyond end of" | |
20425 | ".debug_loclists section [in module %s]"), | |
20426 | objfile_name (objfile)); | |
20427 | ||
20428 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
41144253 | 20429 | |
20430 | if (cu->header.offset_size == 4) | |
e57933dc | 20431 | return (sect_offset) (bfd_get_32 (abfd, info_ptr) + loclist_base); |
41144253 | 20432 | else |
e57933dc | 20433 | return (sect_offset) (bfd_get_64 (abfd, info_ptr) + loclist_base); |
41144253 | 20434 | } |
20435 | ||
d0ce17d8 CT |
20436 | /* Given a DW_FORM_rnglistx value RNGLIST_INDEX, fetch the offset from the |
20437 | array of offsets in the .debug_rnglists section. */ | |
e57933dc SM |
20438 | |
20439 | static sect_offset | |
d0ce17d8 CT |
20440 | read_rnglist_index (struct dwarf2_cu *cu, ULONGEST rnglist_index, |
20441 | dwarf_tag tag) | |
20442 | { | |
20443 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
20444 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
20445 | bfd *abfd = objfile->obfd; | |
20446 | ULONGEST rnglist_header_size = | |
20447 | (cu->header.initial_length_size == 4 ? RNGLIST_HEADER_SIZE32 | |
20448 | : RNGLIST_HEADER_SIZE64); | |
2b0c7f41 SM |
20449 | |
20450 | /* When reading a DW_FORM_rnglistx from a DWO, we read from the DWO's | |
20451 | .debug_rnglists.dwo section. The rnglists base given in the skeleton | |
20452 | doesn't apply. */ | |
d0ce17d8 | 20453 | ULONGEST rnglist_base = |
2b0c7f41 | 20454 | (cu->dwo_unit != nullptr) ? rnglist_header_size : cu->rnglists_base; |
5e4d9bbc SM |
20455 | |
20456 | /* Offset in .debug_rnglists of the offset for RNGLIST_INDEX. */ | |
d0ce17d8 CT |
20457 | ULONGEST start_offset = |
20458 | rnglist_base + rnglist_index * cu->header.offset_size; | |
20459 | ||
20460 | /* Get rnglists section. */ | |
20461 | struct dwarf2_section_info *section = cu_debug_rnglists_section (cu, tag); | |
20462 | ||
20463 | /* Read the rnglists section content. */ | |
20464 | section->read (objfile); | |
20465 | if (section->buffer == nullptr) | |
20466 | error (_("DW_FORM_rnglistx used without .debug_rnglists section " | |
20467 | "[in module %s]"), | |
20468 | objfile_name (objfile)); | |
20469 | ||
a1c40103 SM |
20470 | /* DW_AT_rnglists_base points after the .debug_rnglists contribution header, |
20471 | so if rnglist_base is smaller than the header size, we have a problem. */ | |
20472 | if (rnglist_base < rnglist_header_size) | |
20473 | error (_("DW_AT_rnglists_base is smaller than header size [in module %s]"), | |
20474 | objfile_name (objfile)); | |
20475 | ||
20476 | /* Read the header of the rnglists contribution. */ | |
d0ce17d8 | 20477 | struct loclists_rnglists_header header; |
a1c40103 SM |
20478 | read_loclists_rnglists_header (&header, section, |
20479 | (sect_offset) (rnglist_base - rnglist_header_size)); | |
20480 | ||
20481 | /* Verify the rnglist index is valid. */ | |
d0ce17d8 CT |
20482 | if (rnglist_index >= header.offset_entry_count) |
20483 | error (_("DW_FORM_rnglistx index pointing outside of " | |
20484 | ".debug_rnglists offset array [in module %s]"), | |
20485 | objfile_name (objfile)); | |
20486 | ||
d0ce17d8 | 20487 | /* Validate that reading won't go beyond the end of the section. */ |
5e4d9bbc | 20488 | if (start_offset + cu->header.offset_size > section->size) |
d0ce17d8 CT |
20489 | error (_("Reading DW_FORM_rnglistx index beyond end of" |
20490 | ".debug_rnglists section [in module %s]"), | |
20491 | objfile_name (objfile)); | |
20492 | ||
20493 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
20494 | ||
20495 | if (cu->header.offset_size == 4) | |
e57933dc | 20496 | return (sect_offset) (read_4_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 | 20497 | else |
e57933dc | 20498 | return (sect_offset) (read_8_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 CT |
20499 | } |
20500 | ||
18a8505e AT |
20501 | /* Process the attributes that had to be skipped in the first round. These |
20502 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
20503 | They could not have been processed in the first round, because at the time | |
20504 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
20505 | static void |
20506 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 20507 | struct attribute *attr, dwarf_tag tag) |
18a8505e AT |
20508 | { |
20509 | struct dwarf2_cu *cu = reader->cu; | |
20510 | switch (attr->form) | |
20511 | { | |
20512 | case DW_FORM_addrx: | |
20513 | case DW_FORM_GNU_addr_index: | |
36d378cf TT |
20514 | attr->set_address (read_addr_index (cu, |
20515 | attr->as_unsigned_reprocess ())); | |
dda83cd7 | 20516 | break; |
41144253 | 20517 | case DW_FORM_loclistx: |
b1829e1b | 20518 | { |
e57933dc | 20519 | sect_offset loclists_sect_off |
b1829e1b SM |
20520 | = read_loclist_index (cu, attr->as_unsigned_reprocess ()); |
20521 | ||
e57933dc | 20522 | attr->set_unsigned (to_underlying (loclists_sect_off)); |
b1829e1b SM |
20523 | } |
20524 | break; | |
d0ce17d8 | 20525 | case DW_FORM_rnglistx: |
b1829e1b | 20526 | { |
e57933dc | 20527 | sect_offset rnglists_sect_off |
b1829e1b SM |
20528 | = read_rnglist_index (cu, attr->as_unsigned_reprocess (), tag); |
20529 | ||
e57933dc | 20530 | attr->set_unsigned (to_underlying (rnglists_sect_off)); |
b1829e1b | 20531 | } |
dda83cd7 | 20532 | break; |
18a8505e AT |
20533 | case DW_FORM_strx: |
20534 | case DW_FORM_strx1: | |
20535 | case DW_FORM_strx2: | |
20536 | case DW_FORM_strx3: | |
20537 | case DW_FORM_strx4: | |
20538 | case DW_FORM_GNU_str_index: | |
20539 | { | |
fe56917a | 20540 | unsigned int str_index = attr->as_unsigned_reprocess (); |
c6481205 | 20541 | gdb_assert (!attr->canonical_string_p ()); |
18a8505e | 20542 | if (reader->dwo_file != NULL) |
c6481205 TT |
20543 | attr->set_string_noncanonical (read_dwo_str_index (reader, |
20544 | str_index)); | |
18a8505e | 20545 | else |
c6481205 TT |
20546 | attr->set_string_noncanonical (read_stub_str_index (cu, |
20547 | str_index)); | |
18a8505e AT |
20548 | break; |
20549 | } | |
20550 | default: | |
20551 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
20552 | } | |
20553 | } | |
20554 | ||
a8329558 | 20555 | /* Read an attribute value described by an attribute form. */ |
c906108c | 20556 | |
d521ce57 | 20557 | static const gdb_byte * |
dee91e82 DE |
20558 | read_attribute_value (const struct die_reader_specs *reader, |
20559 | struct attribute *attr, unsigned form, | |
7a5f294d | 20560 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 20561 | { |
dee91e82 | 20562 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
20563 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20564 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 20565 | bfd *abfd = reader->abfd; |
e7c27a73 | 20566 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
20567 | unsigned int bytes_read; |
20568 | struct dwarf_block *blk; | |
20569 | ||
aead7601 | 20570 | attr->form = (enum dwarf_form) form; |
a8329558 | 20571 | switch (form) |
c906108c | 20572 | { |
c906108c | 20573 | case DW_FORM_ref_addr: |
ae411497 | 20574 | if (cu->header.version == 2) |
414ad644 TT |
20575 | attr->set_unsigned (cu->header.read_address (abfd, info_ptr, |
20576 | &bytes_read)); | |
ae411497 | 20577 | else |
414ad644 TT |
20578 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20579 | &bytes_read)); | |
ae411497 TT |
20580 | info_ptr += bytes_read; |
20581 | break; | |
36586728 | 20582 | case DW_FORM_GNU_ref_alt: |
414ad644 TT |
20583 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20584 | &bytes_read)); | |
36586728 TT |
20585 | info_ptr += bytes_read; |
20586 | break; | |
ae411497 | 20587 | case DW_FORM_addr: |
08feed99 TT |
20588 | { |
20589 | struct gdbarch *gdbarch = objfile->arch (); | |
36d378cf TT |
20590 | CORE_ADDR addr = cu->header.read_address (abfd, info_ptr, &bytes_read); |
20591 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr); | |
20592 | attr->set_address (addr); | |
08feed99 TT |
20593 | info_ptr += bytes_read; |
20594 | } | |
c906108c SS |
20595 | break; |
20596 | case DW_FORM_block2: | |
7b5a2f43 | 20597 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20598 | blk->size = read_2_bytes (abfd, info_ptr); |
20599 | info_ptr += 2; | |
20600 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20601 | info_ptr += blk->size; | |
9d2246fc | 20602 | attr->set_block (blk); |
c906108c SS |
20603 | break; |
20604 | case DW_FORM_block4: | |
7b5a2f43 | 20605 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20606 | blk->size = read_4_bytes (abfd, info_ptr); |
20607 | info_ptr += 4; | |
20608 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20609 | info_ptr += blk->size; | |
9d2246fc | 20610 | attr->set_block (blk); |
c906108c SS |
20611 | break; |
20612 | case DW_FORM_data2: | |
414ad644 | 20613 | attr->set_unsigned (read_2_bytes (abfd, info_ptr)); |
c906108c SS |
20614 | info_ptr += 2; |
20615 | break; | |
20616 | case DW_FORM_data4: | |
414ad644 | 20617 | attr->set_unsigned (read_4_bytes (abfd, info_ptr)); |
c906108c SS |
20618 | info_ptr += 4; |
20619 | break; | |
20620 | case DW_FORM_data8: | |
414ad644 | 20621 | attr->set_unsigned (read_8_bytes (abfd, info_ptr)); |
c906108c SS |
20622 | info_ptr += 8; |
20623 | break; | |
0224619f JK |
20624 | case DW_FORM_data16: |
20625 | blk = dwarf_alloc_block (cu); | |
20626 | blk->size = 16; | |
20627 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
20628 | info_ptr += 16; | |
9d2246fc | 20629 | attr->set_block (blk); |
0224619f | 20630 | break; |
2dc7f7b3 | 20631 | case DW_FORM_sec_offset: |
414ad644 TT |
20632 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20633 | &bytes_read)); | |
2dc7f7b3 TT |
20634 | info_ptr += bytes_read; |
20635 | break; | |
41144253 | 20636 | case DW_FORM_loclistx: |
20637 | { | |
7a5f294d TT |
20638 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20639 | &bytes_read)); | |
20640 | info_ptr += bytes_read; | |
41144253 | 20641 | } |
20642 | break; | |
c906108c | 20643 | case DW_FORM_string: |
c6481205 TT |
20644 | attr->set_string_noncanonical (read_direct_string (abfd, info_ptr, |
20645 | &bytes_read)); | |
c906108c SS |
20646 | info_ptr += bytes_read; |
20647 | break; | |
4bdf3d34 | 20648 | case DW_FORM_strp: |
36586728 TT |
20649 | if (!cu->per_cu->is_dwz) |
20650 | { | |
c6481205 TT |
20651 | attr->set_string_noncanonical |
20652 | (read_indirect_string (per_objfile, | |
20653 | abfd, info_ptr, cu_header, | |
20654 | &bytes_read)); | |
36586728 TT |
20655 | info_ptr += bytes_read; |
20656 | break; | |
20657 | } | |
20658 | /* FALLTHROUGH */ | |
43988095 JK |
20659 | case DW_FORM_line_strp: |
20660 | if (!cu->per_cu->is_dwz) | |
20661 | { | |
c6481205 TT |
20662 | attr->set_string_noncanonical |
20663 | (per_objfile->read_line_string (info_ptr, cu_header, | |
20664 | &bytes_read)); | |
43988095 JK |
20665 | info_ptr += bytes_read; |
20666 | break; | |
20667 | } | |
20668 | /* FALLTHROUGH */ | |
36586728 TT |
20669 | case DW_FORM_GNU_strp_alt: |
20670 | { | |
976ca316 | 20671 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
8266302d TT |
20672 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
20673 | &bytes_read); | |
36586728 | 20674 | |
c6481205 TT |
20675 | attr->set_string_noncanonical |
20676 | (dwz->read_string (objfile, str_offset)); | |
36586728 TT |
20677 | info_ptr += bytes_read; |
20678 | } | |
4bdf3d34 | 20679 | break; |
2dc7f7b3 | 20680 | case DW_FORM_exprloc: |
c906108c | 20681 | case DW_FORM_block: |
7b5a2f43 | 20682 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20683 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20684 | info_ptr += bytes_read; | |
20685 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20686 | info_ptr += blk->size; | |
9d2246fc | 20687 | attr->set_block (blk); |
c906108c SS |
20688 | break; |
20689 | case DW_FORM_block1: | |
7b5a2f43 | 20690 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20691 | blk->size = read_1_byte (abfd, info_ptr); |
20692 | info_ptr += 1; | |
20693 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20694 | info_ptr += blk->size; | |
9d2246fc | 20695 | attr->set_block (blk); |
c906108c SS |
20696 | break; |
20697 | case DW_FORM_data1: | |
c906108c | 20698 | case DW_FORM_flag: |
414ad644 | 20699 | attr->set_unsigned (read_1_byte (abfd, info_ptr)); |
c906108c SS |
20700 | info_ptr += 1; |
20701 | break; | |
2dc7f7b3 | 20702 | case DW_FORM_flag_present: |
414ad644 | 20703 | attr->set_unsigned (1); |
2dc7f7b3 | 20704 | break; |
c906108c | 20705 | case DW_FORM_sdata: |
1bc397c5 | 20706 | attr->set_signed (read_signed_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20707 | info_ptr += bytes_read; |
20708 | break; | |
18a8505e | 20709 | case DW_FORM_rnglistx: |
7a5f294d TT |
20710 | { |
20711 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, | |
20712 | &bytes_read)); | |
20713 | info_ptr += bytes_read; | |
20714 | } | |
20715 | break; | |
d0ce17d8 | 20716 | case DW_FORM_udata: |
414ad644 | 20717 | attr->set_unsigned (read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20718 | info_ptr += bytes_read; |
20719 | break; | |
20720 | case DW_FORM_ref1: | |
414ad644 TT |
20721 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20722 | + read_1_byte (abfd, info_ptr))); | |
c906108c SS |
20723 | info_ptr += 1; |
20724 | break; | |
20725 | case DW_FORM_ref2: | |
414ad644 TT |
20726 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20727 | + read_2_bytes (abfd, info_ptr))); | |
c906108c SS |
20728 | info_ptr += 2; |
20729 | break; | |
20730 | case DW_FORM_ref4: | |
414ad644 TT |
20731 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20732 | + read_4_bytes (abfd, info_ptr))); | |
c906108c SS |
20733 | info_ptr += 4; |
20734 | break; | |
613e1657 | 20735 | case DW_FORM_ref8: |
414ad644 TT |
20736 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20737 | + read_8_bytes (abfd, info_ptr))); | |
613e1657 KB |
20738 | info_ptr += 8; |
20739 | break; | |
55f1336d | 20740 | case DW_FORM_ref_sig8: |
630ed6b9 | 20741 | attr->set_signature (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
20742 | info_ptr += 8; |
20743 | break; | |
c906108c | 20744 | case DW_FORM_ref_udata: |
414ad644 TT |
20745 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20746 | + read_unsigned_leb128 (abfd, info_ptr, | |
20747 | &bytes_read))); | |
c906108c SS |
20748 | info_ptr += bytes_read; |
20749 | break; | |
c906108c | 20750 | case DW_FORM_indirect: |
a8329558 KW |
20751 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20752 | info_ptr += bytes_read; | |
43988095 JK |
20753 | if (form == DW_FORM_implicit_const) |
20754 | { | |
20755 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
20756 | info_ptr += bytes_read; | |
20757 | } | |
20758 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
7a5f294d | 20759 | info_ptr); |
43988095 JK |
20760 | break; |
20761 | case DW_FORM_implicit_const: | |
1bc397c5 | 20762 | attr->set_signed (implicit_const); |
a8329558 | 20763 | break; |
336d760d | 20764 | case DW_FORM_addrx: |
3019eac3 | 20765 | case DW_FORM_GNU_addr_index: |
fe56917a TT |
20766 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20767 | &bytes_read)); | |
3019eac3 DE |
20768 | info_ptr += bytes_read; |
20769 | break; | |
cf532bd1 | 20770 | case DW_FORM_strx: |
15f18d14 AT |
20771 | case DW_FORM_strx1: |
20772 | case DW_FORM_strx2: | |
20773 | case DW_FORM_strx3: | |
20774 | case DW_FORM_strx4: | |
3019eac3 | 20775 | case DW_FORM_GNU_str_index: |
3019eac3 | 20776 | { |
15f18d14 AT |
20777 | ULONGEST str_index; |
20778 | if (form == DW_FORM_strx1) | |
20779 | { | |
20780 | str_index = read_1_byte (abfd, info_ptr); | |
20781 | info_ptr += 1; | |
20782 | } | |
20783 | else if (form == DW_FORM_strx2) | |
20784 | { | |
20785 | str_index = read_2_bytes (abfd, info_ptr); | |
20786 | info_ptr += 2; | |
20787 | } | |
20788 | else if (form == DW_FORM_strx3) | |
20789 | { | |
20790 | str_index = read_3_bytes (abfd, info_ptr); | |
20791 | info_ptr += 3; | |
20792 | } | |
20793 | else if (form == DW_FORM_strx4) | |
20794 | { | |
20795 | str_index = read_4_bytes (abfd, info_ptr); | |
20796 | info_ptr += 4; | |
20797 | } | |
20798 | else | |
20799 | { | |
20800 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
20801 | info_ptr += bytes_read; | |
20802 | } | |
fe56917a | 20803 | attr->set_unsigned_reprocess (str_index); |
7a5f294d | 20804 | } |
3019eac3 | 20805 | break; |
c906108c | 20806 | default: |
8a3fe4f8 | 20807 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
20808 | dwarf_form_name (form), |
20809 | bfd_get_filename (abfd)); | |
c906108c | 20810 | } |
28e94949 | 20811 | |
36586728 | 20812 | /* Super hack. */ |
cd6c91b4 | 20813 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
20814 | attr->form = DW_FORM_GNU_ref_alt; |
20815 | ||
28e94949 JB |
20816 | /* We have seen instances where the compiler tried to emit a byte |
20817 | size attribute of -1 which ended up being encoded as an unsigned | |
20818 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
20819 | an object of this size seems pretty unlikely so we can relatively | |
20820 | safely treat these cases as if the size attribute was invalid and | |
20821 | treat them as zero by default. */ | |
20822 | if (attr->name == DW_AT_byte_size | |
20823 | && form == DW_FORM_data4 | |
529908cb | 20824 | && attr->as_unsigned () >= 0xffffffff) |
01c66ae6 JB |
20825 | { |
20826 | complaint | |
dda83cd7 SM |
20827 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
20828 | hex_string (attr->as_unsigned ())); | |
414ad644 | 20829 | attr->set_unsigned (0); |
01c66ae6 | 20830 | } |
28e94949 | 20831 | |
c906108c SS |
20832 | return info_ptr; |
20833 | } | |
20834 | ||
a8329558 KW |
20835 | /* Read an attribute described by an abbreviated attribute. */ |
20836 | ||
d521ce57 | 20837 | static const gdb_byte * |
dee91e82 DE |
20838 | read_attribute (const struct die_reader_specs *reader, |
20839 | struct attribute *attr, struct attr_abbrev *abbrev, | |
7a5f294d | 20840 | const gdb_byte *info_ptr) |
a8329558 KW |
20841 | { |
20842 | attr->name = abbrev->name; | |
c6481205 | 20843 | attr->string_is_canonical = 0; |
fe56917a | 20844 | attr->requires_reprocessing = 0; |
43988095 | 20845 | return read_attribute_value (reader, attr, abbrev->form, |
7a5f294d | 20846 | abbrev->implicit_const, info_ptr); |
a8329558 KW |
20847 | } |
20848 | ||
43988095 JK |
20849 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
20850 | ||
20851 | static const char * | |
976ca316 | 20852 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 20853 | LONGEST str_offset) |
43988095 | 20854 | { |
976ca316 SM |
20855 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
20856 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
20857 | } |
20858 | ||
43988095 JK |
20859 | /* Return pointer to string at .debug_str offset as read from BUF. |
20860 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
20861 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
20862 | ||
d521ce57 | 20863 | static const char * |
976ca316 | 20864 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 20865 | const gdb_byte *buf, |
cf2c3c16 TT |
20866 | const struct comp_unit_head *cu_header, |
20867 | unsigned int *bytes_read_ptr) | |
20868 | { | |
8266302d | 20869 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 20870 | |
976ca316 | 20871 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
20872 | } |
20873 | ||
86c0bb4c | 20874 | /* See read.h. */ |
43988095 | 20875 | |
86c0bb4c TT |
20876 | const char * |
20877 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
20878 | const struct comp_unit_head *cu_header, |
20879 | unsigned int *bytes_read_ptr) | |
43988095 | 20880 | { |
86c0bb4c | 20881 | bfd *abfd = objfile->obfd; |
8266302d | 20882 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 20883 | |
5989a64e | 20884 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
20885 | } |
20886 | ||
3019eac3 | 20887 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 20888 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
20889 | ADDR_SIZE is the size of addresses from the CU header. */ |
20890 | ||
20891 | static CORE_ADDR | |
976ca316 SM |
20892 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
20893 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 20894 | { |
976ca316 | 20895 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
20896 | bfd *abfd = objfile->obfd; |
20897 | const gdb_byte *info_ptr; | |
18a8505e | 20898 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 20899 | |
976ca316 SM |
20900 | per_objfile->per_bfd->addr.read (objfile); |
20901 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 20902 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 20903 | objfile_name (objfile)); |
18a8505e | 20904 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 20905 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
20906 | error (_("DW_FORM_addr_index pointing outside of " |
20907 | ".debug_addr section [in module %s]"), | |
4262abfb | 20908 | objfile_name (objfile)); |
976ca316 SM |
20909 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
20910 | + addr_index * addr_size); | |
3019eac3 DE |
20911 | if (addr_size == 4) |
20912 | return bfd_get_32 (abfd, info_ptr); | |
20913 | else | |
20914 | return bfd_get_64 (abfd, info_ptr); | |
20915 | } | |
20916 | ||
20917 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20918 | ||
20919 | static CORE_ADDR | |
20920 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20921 | { | |
5e22e966 | 20922 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 20923 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
20924 | } |
20925 | ||
20926 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20927 | ||
20928 | static CORE_ADDR | |
d521ce57 | 20929 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20930 | unsigned int *bytes_read) |
20931 | { | |
5e22e966 | 20932 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
20933 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20934 | ||
20935 | return read_addr_index (cu, addr_index); | |
20936 | } | |
20937 | ||
450a1bfc | 20938 | /* See read.h. */ |
3019eac3 DE |
20939 | |
20940 | CORE_ADDR | |
82ca3f51 | 20941 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 20942 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 20943 | unsigned int addr_index) |
3019eac3 | 20944 | { |
976ca316 | 20945 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 20946 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20947 | int addr_size; |
20948 | ||
3019eac3 DE |
20949 | /* We need addr_base and addr_size. |
20950 | If we don't have PER_CU->cu, we have to get it. | |
20951 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20952 | which at this point doesn't seem justified: it's not clear how frequently | |
20953 | it would get used and it would increase the size of every PER_CU. | |
20954 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20955 | so we're not in uncharted territory here. | |
20956 | Alas we need to be a bit more complicated as addr_base is contained | |
20957 | in the DIE. | |
20958 | ||
20959 | We don't need to read the entire CU(/TU). | |
20960 | We just need the header and top level die. | |
a1b64ce1 | 20961 | |
3019eac3 | 20962 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20963 | For now we skip this optimization. */ |
3019eac3 DE |
20964 | |
20965 | if (cu != NULL) | |
20966 | { | |
20967 | addr_base = cu->addr_base; | |
20968 | addr_size = cu->header.addr_size; | |
20969 | } | |
20970 | else | |
20971 | { | |
976ca316 | 20972 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
20973 | addr_base = reader.cu->addr_base; |
20974 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20975 | } |
20976 | ||
976ca316 | 20977 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
20978 | } |
20979 | ||
18a8505e AT |
20980 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20981 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20982 | DWO file. */ | |
3019eac3 | 20983 | |
d521ce57 | 20984 | static const char * |
18a8505e AT |
20985 | read_str_index (struct dwarf2_cu *cu, |
20986 | struct dwarf2_section_info *str_section, | |
20987 | struct dwarf2_section_info *str_offsets_section, | |
20988 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20989 | { |
976ca316 SM |
20990 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20991 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 20992 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20993 | bfd *abfd = objfile->obfd; |
d521ce57 | 20994 | const gdb_byte *info_ptr; |
3019eac3 | 20995 | ULONGEST str_offset; |
cf532bd1 | 20996 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20997 | |
96b79293 TT |
20998 | str_section->read (objfile); |
20999 | str_offsets_section->read (objfile); | |
73869dc2 | 21000 | if (str_section->buffer == NULL) |
18a8505e | 21001 | error (_("%s used without %s section" |
9d8780f0 | 21002 | " in CU at offset %s [in module %s]"), |
96b79293 | 21003 | form_name, str_section->get_name (), |
dda83cd7 | 21004 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 21005 | if (str_offsets_section->buffer == NULL) |
18a8505e | 21006 | error (_("%s used without %s section" |
9d8780f0 | 21007 | " in CU at offset %s [in module %s]"), |
96b79293 | 21008 | form_name, str_section->get_name (), |
dda83cd7 | 21009 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 21010 | info_ptr = (str_offsets_section->buffer |
18a8505e | 21011 | + str_offsets_base |
3019eac3 DE |
21012 | + str_index * cu->header.offset_size); |
21013 | if (cu->header.offset_size == 4) | |
21014 | str_offset = bfd_get_32 (abfd, info_ptr); | |
21015 | else | |
21016 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 21017 | if (str_offset >= str_section->size) |
57d63ce2 | 21018 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
21019 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
21020 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 21021 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
21022 | } |
21023 | ||
18a8505e AT |
21024 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
21025 | ||
21026 | static const char * | |
21027 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
21028 | { | |
21029 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
21030 | ? reader->cu->header.addr_size : 0; | |
21031 | return read_str_index (reader->cu, | |
21032 | &reader->dwo_file->sections.str, | |
21033 | &reader->dwo_file->sections.str_offsets, | |
21034 | str_offsets_base, str_index); | |
21035 | } | |
21036 | ||
21037 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
21038 | ||
21039 | static const char * | |
21040 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
21041 | { | |
5e22e966 | 21042 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
21043 | const char *objf_name = objfile_name (objfile); |
21044 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
21045 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
21046 | ||
21047 | if (!cu->str_offsets_base.has_value ()) | |
21048 | error (_("%s used in Fission stub without %s" | |
21049 | " in CU at offset 0x%lx [in module %s]"), | |
21050 | form_name, str_offsets_attr_name, | |
21051 | (long) cu->header.offset_size, objf_name); | |
21052 | ||
21053 | return read_str_index (cu, | |
5e22e966 SM |
21054 | &cu->per_objfile->per_bfd->str, |
21055 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
21056 | *cu->str_offsets_base, str_index); |
21057 | } | |
21058 | ||
3019eac3 DE |
21059 | /* Return the length of an LEB128 number in BUF. */ |
21060 | ||
21061 | static int | |
21062 | leb128_size (const gdb_byte *buf) | |
21063 | { | |
21064 | const gdb_byte *begin = buf; | |
21065 | gdb_byte byte; | |
21066 | ||
21067 | while (1) | |
21068 | { | |
21069 | byte = *buf++; | |
21070 | if ((byte & 128) == 0) | |
21071 | return buf - begin; | |
21072 | } | |
21073 | } | |
21074 | ||
c906108c | 21075 | static void |
e142c38c | 21076 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
21077 | { |
21078 | switch (lang) | |
21079 | { | |
21080 | case DW_LANG_C89: | |
76bee0cc | 21081 | case DW_LANG_C99: |
0cfd832f | 21082 | case DW_LANG_C11: |
c906108c | 21083 | case DW_LANG_C: |
d1be3247 | 21084 | case DW_LANG_UPC: |
e142c38c | 21085 | cu->language = language_c; |
c906108c | 21086 | break; |
9c37b5ae | 21087 | case DW_LANG_Java: |
c906108c | 21088 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
21089 | case DW_LANG_C_plus_plus_11: |
21090 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 21091 | cu->language = language_cplus; |
c906108c | 21092 | break; |
6aecb9c2 JB |
21093 | case DW_LANG_D: |
21094 | cu->language = language_d; | |
21095 | break; | |
c906108c SS |
21096 | case DW_LANG_Fortran77: |
21097 | case DW_LANG_Fortran90: | |
b21b22e0 | 21098 | case DW_LANG_Fortran95: |
f7de9aab MW |
21099 | case DW_LANG_Fortran03: |
21100 | case DW_LANG_Fortran08: | |
e142c38c | 21101 | cu->language = language_fortran; |
c906108c | 21102 | break; |
a766d390 DE |
21103 | case DW_LANG_Go: |
21104 | cu->language = language_go; | |
21105 | break; | |
c906108c | 21106 | case DW_LANG_Mips_Assembler: |
e142c38c | 21107 | cu->language = language_asm; |
c906108c SS |
21108 | break; |
21109 | case DW_LANG_Ada83: | |
8aaf0b47 | 21110 | case DW_LANG_Ada95: |
bc5f45f8 JB |
21111 | cu->language = language_ada; |
21112 | break; | |
72019c9c GM |
21113 | case DW_LANG_Modula2: |
21114 | cu->language = language_m2; | |
21115 | break; | |
fe8e67fd PM |
21116 | case DW_LANG_Pascal83: |
21117 | cu->language = language_pascal; | |
21118 | break; | |
22566fbd DJ |
21119 | case DW_LANG_ObjC: |
21120 | cu->language = language_objc; | |
21121 | break; | |
c44af4eb TT |
21122 | case DW_LANG_Rust: |
21123 | case DW_LANG_Rust_old: | |
21124 | cu->language = language_rust; | |
21125 | break; | |
c906108c SS |
21126 | case DW_LANG_Cobol74: |
21127 | case DW_LANG_Cobol85: | |
c906108c | 21128 | default: |
e142c38c | 21129 | cu->language = language_minimal; |
c906108c SS |
21130 | break; |
21131 | } | |
e142c38c | 21132 | cu->language_defn = language_def (cu->language); |
c906108c SS |
21133 | } |
21134 | ||
21135 | /* Return the named attribute or NULL if not there. */ | |
21136 | ||
21137 | static struct attribute * | |
e142c38c | 21138 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 21139 | { |
a48e046c | 21140 | for (;;) |
c906108c | 21141 | { |
a48e046c TT |
21142 | unsigned int i; |
21143 | struct attribute *spec = NULL; | |
21144 | ||
21145 | for (i = 0; i < die->num_attrs; ++i) | |
21146 | { | |
21147 | if (die->attrs[i].name == name) | |
21148 | return &die->attrs[i]; | |
21149 | if (die->attrs[i].name == DW_AT_specification | |
21150 | || die->attrs[i].name == DW_AT_abstract_origin) | |
21151 | spec = &die->attrs[i]; | |
21152 | } | |
21153 | ||
21154 | if (!spec) | |
21155 | break; | |
c906108c | 21156 | |
f2f0e013 | 21157 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 21158 | } |
c5aa993b | 21159 | |
c906108c SS |
21160 | return NULL; |
21161 | } | |
21162 | ||
7d45c7c3 KB |
21163 | /* Return the string associated with a string-typed attribute, or NULL if it |
21164 | is either not found or is of an incorrect type. */ | |
21165 | ||
21166 | static const char * | |
21167 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
21168 | { | |
21169 | struct attribute *attr; | |
21170 | const char *str = NULL; | |
21171 | ||
21172 | attr = dwarf2_attr (die, name, cu); | |
21173 | ||
21174 | if (attr != NULL) | |
21175 | { | |
95f982e5 | 21176 | str = attr->as_string (); |
e61108c9 | 21177 | if (str == nullptr) |
dda83cd7 | 21178 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
21179 | "DIE at %s in module %s"), |
21180 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 21181 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
21182 | } |
21183 | ||
21184 | return str; | |
21185 | } | |
21186 | ||
a084a2a6 | 21187 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 21188 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
21189 | static const char * |
21190 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
21191 | { | |
21192 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
21193 | if (dwo_name == nullptr) | |
21194 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
21195 | return dwo_name; | |
21196 | } | |
21197 | ||
05cf31d1 JB |
21198 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
21199 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 21200 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
21201 | |
21202 | static int | |
21203 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
21204 | { | |
21205 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
21206 | ||
c45bc3f8 | 21207 | return attr != nullptr && attr->as_boolean (); |
05cf31d1 JB |
21208 | } |
21209 | ||
3ca72b44 | 21210 | static int |
e142c38c | 21211 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 21212 | { |
05cf31d1 JB |
21213 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
21214 | which value is non-zero. However, we have to be careful with | |
21215 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
21216 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
21217 | end up accidently finding a declaration attribute that belongs | |
21218 | to a different DIE referenced by the specification attribute, | |
21219 | even though the given DIE does not have a declaration attribute. */ | |
21220 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
21221 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
21222 | } |
21223 | ||
63d06c5c | 21224 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 21225 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
21226 | containing the return value on output. If there is no |
21227 | specification, but there is an abstract origin, that is | |
21228 | returned. */ | |
63d06c5c DC |
21229 | |
21230 | static struct die_info * | |
f2f0e013 | 21231 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 21232 | { |
f2f0e013 DJ |
21233 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
21234 | *spec_cu); | |
63d06c5c | 21235 | |
edb3359d DJ |
21236 | if (spec_attr == NULL) |
21237 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
21238 | ||
63d06c5c DC |
21239 | if (spec_attr == NULL) |
21240 | return NULL; | |
21241 | else | |
f2f0e013 | 21242 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 21243 | } |
c906108c | 21244 | |
527f3840 JK |
21245 | /* Stub for free_line_header to match void * callback types. */ |
21246 | ||
21247 | static void | |
21248 | free_line_header_voidp (void *arg) | |
21249 | { | |
9a3c8263 | 21250 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 21251 | |
fff8551c | 21252 | delete lh; |
527f3840 JK |
21253 | } |
21254 | ||
83769d0b | 21255 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
21256 | |
21257 | static struct dwarf2_section_info * | |
21258 | get_debug_line_section (struct dwarf2_cu *cu) | |
21259 | { | |
21260 | struct dwarf2_section_info *section; | |
976ca316 | 21261 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
21262 | |
21263 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
21264 | DWO file. */ | |
21265 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
21266 | section = &cu->dwo_unit->dwo_file->sections.line; | |
21267 | else if (cu->per_cu->is_dwz) | |
21268 | { | |
976ca316 | 21269 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
36586728 TT |
21270 | |
21271 | section = &dwz->line; | |
21272 | } | |
21273 | else | |
976ca316 | 21274 | section = &per_objfile->per_bfd->line; |
36586728 TT |
21275 | |
21276 | return section; | |
21277 | } | |
21278 | ||
debd256d | 21279 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 21280 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 21281 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
21282 | Returns NULL if there is a problem reading the header, e.g., if it |
21283 | has a version we don't understand. | |
debd256d JB |
21284 | |
21285 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
21286 | the returned object point into the dwarf line section buffer, |
21287 | and must not be freed. */ | |
ae2de4f8 | 21288 | |
fff8551c | 21289 | static line_header_up |
9c541725 | 21290 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 21291 | { |
3019eac3 | 21292 | struct dwarf2_section_info *section; |
976ca316 | 21293 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 21294 | |
36586728 | 21295 | section = get_debug_line_section (cu); |
976ca316 | 21296 | section->read (per_objfile->objfile); |
3019eac3 | 21297 | if (section->buffer == NULL) |
debd256d | 21298 | { |
3019eac3 | 21299 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 21300 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 21301 | else |
b98664d3 | 21302 | complaint (_("missing .debug_line section")); |
debd256d JB |
21303 | return 0; |
21304 | } | |
21305 | ||
0df7ad3a | 21306 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 21307 | per_objfile, section, &cu->header); |
debd256d | 21308 | } |
c906108c | 21309 | |
c6da4cef | 21310 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 21311 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 21312 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
21313 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
21314 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 21315 | |
d521ce57 | 21316 | static const char * |
7ba99d21 | 21317 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 21318 | const dwarf2_psymtab *pst, |
c89b44cd TT |
21319 | const char *comp_dir, |
21320 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 21321 | { |
d521ce57 TT |
21322 | const char *include_name = fe.name; |
21323 | const char *include_name_to_compare = include_name; | |
72b9f47f | 21324 | const char *pst_filename; |
c6da4cef DE |
21325 | int file_is_pst; |
21326 | ||
8c43009f | 21327 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 21328 | |
c89b44cd | 21329 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
21330 | if (!IS_ABSOLUTE_PATH (include_name) |
21331 | && (dir_name != NULL || comp_dir != NULL)) | |
21332 | { | |
21333 | /* Avoid creating a duplicate psymtab for PST. | |
21334 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
21335 | Before we do the comparison, however, we need to account | |
21336 | for DIR_NAME and COMP_DIR. | |
21337 | First prepend dir_name (if non-NULL). If we still don't | |
21338 | have an absolute path prepend comp_dir (if non-NULL). | |
21339 | However, the directory we record in the include-file's | |
21340 | psymtab does not contain COMP_DIR (to match the | |
21341 | corresponding symtab(s)). | |
21342 | ||
21343 | Example: | |
21344 | ||
21345 | bash$ cd /tmp | |
21346 | bash$ gcc -g ./hello.c | |
21347 | include_name = "hello.c" | |
21348 | dir_name = "." | |
21349 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
21350 | DW_AT_name = "./hello.c" |
21351 | ||
21352 | */ | |
c6da4cef DE |
21353 | |
21354 | if (dir_name != NULL) | |
21355 | { | |
c89b44cd TT |
21356 | name_holder->reset (concat (dir_name, SLASH_STRING, |
21357 | include_name, (char *) NULL)); | |
21358 | include_name = name_holder->get (); | |
c6da4cef | 21359 | include_name_to_compare = include_name; |
c6da4cef DE |
21360 | } |
21361 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
21362 | { | |
c89b44cd TT |
21363 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
21364 | include_name, (char *) NULL)); | |
21365 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
21366 | } |
21367 | } | |
21368 | ||
21369 | pst_filename = pst->filename; | |
c89b44cd | 21370 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
21371 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
21372 | { | |
c89b44cd TT |
21373 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
21374 | pst_filename, (char *) NULL)); | |
21375 | pst_filename = copied_name.get (); | |
c6da4cef DE |
21376 | } |
21377 | ||
1e3fad37 | 21378 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 21379 | |
c6da4cef DE |
21380 | if (file_is_pst) |
21381 | return NULL; | |
21382 | return include_name; | |
21383 | } | |
21384 | ||
d9b3de22 DE |
21385 | /* State machine to track the state of the line number program. */ |
21386 | ||
6f77053d | 21387 | class lnp_state_machine |
d9b3de22 | 21388 | { |
6f77053d PA |
21389 | public: |
21390 | /* Initialize a machine state for the start of a line number | |
21391 | program. */ | |
804d2729 TT |
21392 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
21393 | bool record_lines_p); | |
6f77053d | 21394 | |
8c43009f PA |
21395 | file_entry *current_file () |
21396 | { | |
21397 | /* lh->file_names is 0-based, but the file name numbers in the | |
21398 | statement program are 1-based. */ | |
6f77053d PA |
21399 | return m_line_header->file_name_at (m_file); |
21400 | } | |
21401 | ||
21402 | /* Record the line in the state machine. END_SEQUENCE is true if | |
21403 | we're processing the end of a sequence. */ | |
21404 | void record_line (bool end_sequence); | |
21405 | ||
a8caed5d | 21406 | /* Check ADDRESS is -1, or zero and less than UNRELOCATED_LOWPC, and if true |
7ab6656f | 21407 | nop-out rest of the lines in this sequence. */ |
6f77053d PA |
21408 | void check_line_address (struct dwarf2_cu *cu, |
21409 | const gdb_byte *line_ptr, | |
7ab6656f | 21410 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
21411 | |
21412 | void handle_set_discriminator (unsigned int discriminator) | |
21413 | { | |
21414 | m_discriminator = discriminator; | |
21415 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
21416 | } | |
21417 | ||
21418 | /* Handle DW_LNE_set_address. */ | |
21419 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
21420 | { | |
21421 | m_op_index = 0; | |
21422 | address += baseaddr; | |
21423 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
21424 | } | |
21425 | ||
21426 | /* Handle DW_LNS_advance_pc. */ | |
21427 | void handle_advance_pc (CORE_ADDR adjust); | |
21428 | ||
21429 | /* Handle a special opcode. */ | |
21430 | void handle_special_opcode (unsigned char op_code); | |
21431 | ||
21432 | /* Handle DW_LNS_advance_line. */ | |
21433 | void handle_advance_line (int line_delta) | |
21434 | { | |
21435 | advance_line (line_delta); | |
21436 | } | |
21437 | ||
21438 | /* Handle DW_LNS_set_file. */ | |
21439 | void handle_set_file (file_name_index file); | |
21440 | ||
21441 | /* Handle DW_LNS_negate_stmt. */ | |
21442 | void handle_negate_stmt () | |
21443 | { | |
21444 | m_is_stmt = !m_is_stmt; | |
21445 | } | |
21446 | ||
21447 | /* Handle DW_LNS_const_add_pc. */ | |
21448 | void handle_const_add_pc (); | |
21449 | ||
21450 | /* Handle DW_LNS_fixed_advance_pc. */ | |
21451 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
21452 | { | |
21453 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21454 | m_op_index = 0; | |
21455 | } | |
21456 | ||
21457 | /* Handle DW_LNS_copy. */ | |
21458 | void handle_copy () | |
21459 | { | |
21460 | record_line (false); | |
21461 | m_discriminator = 0; | |
21462 | } | |
21463 | ||
21464 | /* Handle DW_LNE_end_sequence. */ | |
21465 | void handle_end_sequence () | |
21466 | { | |
804d2729 | 21467 | m_currently_recording_lines = true; |
6f77053d PA |
21468 | } |
21469 | ||
21470 | private: | |
21471 | /* Advance the line by LINE_DELTA. */ | |
21472 | void advance_line (int line_delta) | |
21473 | { | |
21474 | m_line += line_delta; | |
21475 | ||
21476 | if (line_delta != 0) | |
21477 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
21478 | } |
21479 | ||
804d2729 TT |
21480 | struct dwarf2_cu *m_cu; |
21481 | ||
6f77053d PA |
21482 | gdbarch *m_gdbarch; |
21483 | ||
21484 | /* True if we're recording lines. | |
21485 | Otherwise we're building partial symtabs and are just interested in | |
21486 | finding include files mentioned by the line number program. */ | |
21487 | bool m_record_lines_p; | |
21488 | ||
8c43009f | 21489 | /* The line number header. */ |
6f77053d | 21490 | line_header *m_line_header; |
8c43009f | 21491 | |
6f77053d PA |
21492 | /* These are part of the standard DWARF line number state machine, |
21493 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 21494 | |
6f77053d | 21495 | unsigned char m_op_index = 0; |
7ba99d21 AT |
21496 | /* The line table index of the current file. */ |
21497 | file_name_index m_file = 1; | |
6f77053d PA |
21498 | unsigned int m_line = 1; |
21499 | ||
21500 | /* These are initialized in the constructor. */ | |
21501 | ||
21502 | CORE_ADDR m_address; | |
21503 | bool m_is_stmt; | |
21504 | unsigned int m_discriminator; | |
d9b3de22 DE |
21505 | |
21506 | /* Additional bits of state we need to track. */ | |
21507 | ||
21508 | /* The last file that we called dwarf2_start_subfile for. | |
21509 | This is only used for TLLs. */ | |
6f77053d | 21510 | unsigned int m_last_file = 0; |
d9b3de22 | 21511 | /* The last file a line number was recorded for. */ |
6f77053d | 21512 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 21513 | |
1313c56e AB |
21514 | /* The address of the last line entry. */ |
21515 | CORE_ADDR m_last_address; | |
21516 | ||
21517 | /* Set to true when a previous line at the same address (using | |
21518 | m_last_address) had m_is_stmt true. This is reset to false when a | |
21519 | line entry at a new address (m_address different to m_last_address) is | |
21520 | processed. */ | |
21521 | bool m_stmt_at_address = false; | |
21522 | ||
804d2729 TT |
21523 | /* When true, record the lines we decode. */ |
21524 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
21525 | |
21526 | /* The last line number that was recorded, used to coalesce | |
21527 | consecutive entries for the same line. This can happen, for | |
21528 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
21529 | unsigned int m_last_line = 0; |
21530 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 21531 | }; |
d9b3de22 | 21532 | |
6f77053d PA |
21533 | void |
21534 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
21535 | { | |
21536 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
21537 | / m_line_header->maximum_ops_per_instruction) | |
21538 | * m_line_header->minimum_instruction_length); | |
21539 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21540 | m_op_index = ((m_op_index + adjust) | |
21541 | % m_line_header->maximum_ops_per_instruction); | |
21542 | } | |
d9b3de22 | 21543 | |
6f77053d PA |
21544 | void |
21545 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 21546 | { |
6f77053d | 21547 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
21548 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
21549 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
21550 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
21551 | / m_line_header->maximum_ops_per_instruction) |
21552 | * m_line_header->minimum_instruction_length); | |
21553 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 21554 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 21555 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 21556 | |
258bf0ee | 21557 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
21558 | advance_line (line_delta); |
21559 | record_line (false); | |
21560 | m_discriminator = 0; | |
21561 | } | |
d9b3de22 | 21562 | |
6f77053d PA |
21563 | void |
21564 | lnp_state_machine::handle_set_file (file_name_index file) | |
21565 | { | |
21566 | m_file = file; | |
21567 | ||
21568 | const file_entry *fe = current_file (); | |
21569 | if (fe == NULL) | |
21570 | dwarf2_debug_line_missing_file_complaint (); | |
21571 | else if (m_record_lines_p) | |
21572 | { | |
21573 | const char *dir = fe->include_dir (m_line_header); | |
21574 | ||
c24bdb02 | 21575 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21576 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 21577 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
21578 | } |
21579 | } | |
21580 | ||
21581 | void | |
21582 | lnp_state_machine::handle_const_add_pc () | |
21583 | { | |
21584 | CORE_ADDR adjust | |
21585 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21586 | ||
21587 | CORE_ADDR addr_adj | |
21588 | = (((m_op_index + adjust) | |
21589 | / m_line_header->maximum_ops_per_instruction) | |
21590 | * m_line_header->minimum_instruction_length); | |
21591 | ||
21592 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21593 | m_op_index = ((m_op_index + adjust) | |
21594 | % m_line_header->maximum_ops_per_instruction); | |
21595 | } | |
d9b3de22 | 21596 | |
a05a36a5 DE |
21597 | /* Return non-zero if we should add LINE to the line number table. |
21598 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21599 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21600 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21601 | had a non-zero discriminator. | |
21602 | ||
21603 | We have to be careful in the presence of discriminators. | |
21604 | E.g., for this line: | |
21605 | ||
21606 | for (i = 0; i < 100000; i++); | |
21607 | ||
21608 | clang can emit four line number entries for that one line, | |
21609 | each with a different discriminator. | |
21610 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21611 | ||
21612 | However, we want gdb to coalesce all four entries into one. | |
21613 | Otherwise the user could stepi into the middle of the line and | |
21614 | gdb would get confused about whether the pc really was in the | |
21615 | middle of the line. | |
21616 | ||
21617 | Things are further complicated by the fact that two consecutive | |
21618 | line number entries for the same line is a heuristic used by gcc | |
21619 | to denote the end of the prologue. So we can't just discard duplicate | |
21620 | entries, we have to be selective about it. The heuristic we use is | |
21621 | that we only collapse consecutive entries for the same line if at least | |
21622 | one of those entries has a non-zero discriminator. PR 17276. | |
21623 | ||
21624 | Note: Addresses in the line number state machine can never go backwards | |
21625 | within one sequence, thus this coalescing is ok. */ | |
21626 | ||
21627 | static int | |
804d2729 TT |
21628 | dwarf_record_line_p (struct dwarf2_cu *cu, |
21629 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
21630 | int line_has_non_zero_discriminator, |
21631 | struct subfile *last_subfile) | |
21632 | { | |
c24bdb02 | 21633 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
21634 | return 1; |
21635 | if (line != last_line) | |
21636 | return 1; | |
21637 | /* Same line for the same file that we've seen already. | |
21638 | As a last check, for pr 17276, only record the line if the line | |
21639 | has never had a non-zero discriminator. */ | |
21640 | if (!line_has_non_zero_discriminator) | |
21641 | return 1; | |
21642 | return 0; | |
21643 | } | |
21644 | ||
804d2729 TT |
21645 | /* Use the CU's builder to record line number LINE beginning at |
21646 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
21647 | |
21648 | static void | |
d9b3de22 | 21649 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 21650 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 21651 | struct dwarf2_cu *cu) |
252a6764 DE |
21652 | { |
21653 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21654 | ||
27e0867f DE |
21655 | if (dwarf_line_debug) |
21656 | { | |
21657 | fprintf_unfiltered (gdb_stdlog, | |
21658 | "Recording line %u, file %s, address %s\n", | |
21659 | line, lbasename (subfile->name), | |
21660 | paddress (gdbarch, address)); | |
21661 | } | |
21662 | ||
804d2729 | 21663 | if (cu != nullptr) |
8c95582d | 21664 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
21665 | } |
21666 | ||
21667 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21668 | Mark the end of a set of line number records. | |
d9b3de22 | 21669 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21670 | If SUBFILE is NULL the request is ignored. */ |
21671 | ||
21672 | static void | |
21673 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 21674 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 21675 | { |
27e0867f DE |
21676 | if (subfile == NULL) |
21677 | return; | |
21678 | ||
21679 | if (dwarf_line_debug) | |
21680 | { | |
21681 | fprintf_unfiltered (gdb_stdlog, | |
21682 | "Finishing current line, file %s, address %s\n", | |
21683 | lbasename (subfile->name), | |
21684 | paddress (gdbarch, address)); | |
21685 | } | |
21686 | ||
8c95582d | 21687 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
21688 | } |
21689 | ||
6f77053d PA |
21690 | void |
21691 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21692 | { |
d9b3de22 DE |
21693 | if (dwarf_line_debug) |
21694 | { | |
21695 | fprintf_unfiltered (gdb_stdlog, | |
21696 | "Processing actual line %u: file %u," | |
94a72be7 | 21697 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 21698 | m_line, m_file, |
6f77053d | 21699 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
21700 | m_is_stmt, m_discriminator, |
21701 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
21702 | } |
21703 | ||
6f77053d | 21704 | file_entry *fe = current_file (); |
8c43009f PA |
21705 | |
21706 | if (fe == NULL) | |
d9b3de22 DE |
21707 | dwarf2_debug_line_missing_file_complaint (); |
21708 | /* For now we ignore lines not starting on an instruction boundary. | |
21709 | But not when processing end_sequence for compatibility with the | |
21710 | previous version of the code. */ | |
6f77053d | 21711 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21712 | { |
8c43009f | 21713 | fe->included_p = 1; |
8c95582d | 21714 | if (m_record_lines_p) |
d9b3de22 | 21715 | { |
1313c56e AB |
21716 | /* When we switch files we insert an end maker in the first file, |
21717 | switch to the second file and add a new line entry. The | |
21718 | problem is that the end marker inserted in the first file will | |
21719 | discard any previous line entries at the same address. If the | |
21720 | line entries in the first file are marked as is-stmt, while | |
21721 | the new line in the second file is non-stmt, then this means | |
21722 | the end marker will discard is-stmt lines so we can have a | |
21723 | non-stmt line. This means that there are less addresses at | |
21724 | which the user can insert a breakpoint. | |
21725 | ||
21726 | To improve this we track the last address in m_last_address, | |
21727 | and whether we have seen an is-stmt at this address. Then | |
21728 | when switching files, if we have seen a stmt at the current | |
21729 | address, and we are switching to create a non-stmt line, then | |
21730 | discard the new line. */ | |
21731 | bool file_changed | |
21732 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
21733 | bool ignore_this_line | |
dda83cd7 SM |
21734 | = ((file_changed && !end_sequence && m_last_address == m_address |
21735 | && !m_is_stmt && m_stmt_at_address) | |
21736 | || (!end_sequence && m_line == 0)); | |
1313c56e AB |
21737 | |
21738 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 21739 | { |
804d2729 TT |
21740 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21741 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21742 | } |
21743 | ||
1313c56e | 21744 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 21745 | { |
8c95582d AB |
21746 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
21747 | ||
804d2729 | 21748 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21749 | m_line_has_non_zero_discriminator, |
21750 | m_last_subfile)) | |
d9b3de22 | 21751 | { |
c24bdb02 | 21752 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21753 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21754 | builder->get_current_subfile (), |
8c95582d | 21755 | m_line, m_address, is_stmt, |
804d2729 | 21756 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21757 | } |
c24bdb02 | 21758 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21759 | m_last_line = m_line; |
d9b3de22 DE |
21760 | } |
21761 | } | |
21762 | } | |
1313c56e AB |
21763 | |
21764 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
21765 | have multiple line table entries all at m_address. */ | |
21766 | if (m_last_address != m_address) | |
21767 | { | |
21768 | m_stmt_at_address = false; | |
21769 | m_last_address = m_address; | |
21770 | } | |
21771 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
21772 | } |
21773 | ||
804d2729 TT |
21774 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21775 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21776 | { |
804d2729 | 21777 | m_cu = cu; |
6f77053d PA |
21778 | m_gdbarch = arch; |
21779 | m_record_lines_p = record_lines_p; | |
21780 | m_line_header = lh; | |
d9b3de22 | 21781 | |
804d2729 | 21782 | m_currently_recording_lines = true; |
d9b3de22 | 21783 | |
d9b3de22 DE |
21784 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21785 | was a line entry for it so that the backend has a chance to adjust it | |
21786 | and also record it in case it needs it. This is currently used by MIPS | |
21787 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21788 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21789 | m_is_stmt = lh->default_is_stmt; | |
21790 | m_discriminator = 0; | |
1313c56e AB |
21791 | |
21792 | m_last_address = m_address; | |
21793 | m_stmt_at_address = false; | |
252a6764 DE |
21794 | } |
21795 | ||
6f77053d PA |
21796 | void |
21797 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21798 | const gdb_byte *line_ptr, | |
7ab6656f | 21799 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21800 | { |
a8caed5d FS |
21801 | /* Linkers resolve a symbolic relocation referencing a GC'd function to 0 or |
21802 | -1. If ADDRESS is 0, ignoring the opcode will err if the text section is | |
21803 | located at 0x0. In this case, additionally check that if | |
21804 | ADDRESS < UNRELOCATED_LOWPC. */ | |
924c2928 | 21805 | |
a8caed5d FS |
21806 | if ((address == 0 && address < unrelocated_lowpc) |
21807 | || address == (CORE_ADDR) -1) | |
924c2928 DE |
21808 | { |
21809 | /* This line table is for a function which has been | |
21810 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21811 | ||
5e22e966 | 21812 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
21813 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21814 | ||
b98664d3 | 21815 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21816 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21817 | m_currently_recording_lines = false; |
21818 | /* Note: m_currently_recording_lines is left as false until we see | |
21819 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21820 | } |
21821 | } | |
21822 | ||
f3f5162e | 21823 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21824 | Process the line number information in LH. |
21825 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21826 | program in order to set included_p for every referenced header. */ | |
debd256d | 21827 | |
c906108c | 21828 | static void |
43f3e411 DE |
21829 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21830 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21831 | { |
d521ce57 TT |
21832 | const gdb_byte *line_ptr, *extended_end; |
21833 | const gdb_byte *line_end; | |
a8c50c1f | 21834 | unsigned int bytes_read, extended_len; |
699ca60a | 21835 | unsigned char op_code, extended_op; |
e142c38c | 21836 | CORE_ADDR baseaddr; |
5e22e966 | 21837 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21838 | bfd *abfd = objfile->obfd; |
08feed99 | 21839 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
21840 | /* True if we're recording line info (as opposed to building partial |
21841 | symtabs and just interested in finding include files mentioned by | |
21842 | the line number program). */ | |
21843 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 21844 | |
b3b3bada | 21845 | baseaddr = objfile->text_section_offset (); |
c906108c | 21846 | |
debd256d JB |
21847 | line_ptr = lh->statement_program_start; |
21848 | line_end = lh->statement_program_end; | |
c906108c SS |
21849 | |
21850 | /* Read the statement sequences until there's nothing left. */ | |
21851 | while (line_ptr < line_end) | |
21852 | { | |
6f77053d PA |
21853 | /* The DWARF line number program state machine. Reset the state |
21854 | machine at the start of each sequence. */ | |
804d2729 | 21855 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21856 | bool end_sequence = false; |
d9b3de22 | 21857 | |
8c43009f | 21858 | if (record_lines_p) |
c906108c | 21859 | { |
8c43009f PA |
21860 | /* Start a subfile for the current file of the state |
21861 | machine. */ | |
21862 | const file_entry *fe = state_machine.current_file (); | |
21863 | ||
21864 | if (fe != NULL) | |
804d2729 | 21865 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21866 | } |
21867 | ||
a738430d | 21868 | /* Decode the table. */ |
d9b3de22 | 21869 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21870 | { |
21871 | op_code = read_1_byte (abfd, line_ptr); | |
21872 | line_ptr += 1; | |
9aa1fe7e | 21873 | |
debd256d | 21874 | if (op_code >= lh->opcode_base) |
6e70227d | 21875 | { |
8e07a239 | 21876 | /* Special opcode. */ |
6f77053d | 21877 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21878 | } |
21879 | else switch (op_code) | |
c906108c SS |
21880 | { |
21881 | case DW_LNS_extended_op: | |
3e43a32a MS |
21882 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21883 | &bytes_read); | |
473b7be6 | 21884 | line_ptr += bytes_read; |
a8c50c1f | 21885 | extended_end = line_ptr + extended_len; |
c906108c SS |
21886 | extended_op = read_1_byte (abfd, line_ptr); |
21887 | line_ptr += 1; | |
8f34b746 TV |
21888 | if (DW_LNE_lo_user <= extended_op |
21889 | && extended_op <= DW_LNE_hi_user) | |
21890 | { | |
21891 | /* Vendor extension, ignore. */ | |
21892 | line_ptr = extended_end; | |
21893 | break; | |
21894 | } | |
c906108c SS |
21895 | switch (extended_op) |
21896 | { | |
21897 | case DW_LNE_end_sequence: | |
6f77053d PA |
21898 | state_machine.handle_end_sequence (); |
21899 | end_sequence = true; | |
c906108c SS |
21900 | break; |
21901 | case DW_LNE_set_address: | |
d9b3de22 DE |
21902 | { |
21903 | CORE_ADDR address | |
c8a7a66f | 21904 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 21905 | line_ptr += bytes_read; |
6f77053d PA |
21906 | |
21907 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21908 | lowpc - baseaddr, address); |
6f77053d | 21909 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21910 | } |
c906108c SS |
21911 | break; |
21912 | case DW_LNE_define_file: | |
dda83cd7 SM |
21913 | { |
21914 | const char *cur_file; | |
ecfb656c PA |
21915 | unsigned int mod_time, length; |
21916 | dir_index dindex; | |
6e70227d | 21917 | |
dda83cd7 | 21918 | cur_file = read_direct_string (abfd, line_ptr, |
3e43a32a | 21919 | &bytes_read); |
dda83cd7 SM |
21920 | line_ptr += bytes_read; |
21921 | dindex = (dir_index) | |
21922 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21923 | line_ptr += bytes_read; | |
21924 | mod_time = | |
21925 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21926 | line_ptr += bytes_read; | |
21927 | length = | |
21928 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21929 | line_ptr += bytes_read; | |
21930 | lh->add_file_name (cur_file, dindex, mod_time, length); | |
21931 | } | |
c906108c | 21932 | break; |
d0c6ba3d | 21933 | case DW_LNE_set_discriminator: |
6f77053d PA |
21934 | { |
21935 | /* The discriminator is not interesting to the | |
21936 | debugger; just ignore it. We still need to | |
21937 | check its value though: | |
21938 | if there are consecutive entries for the same | |
21939 | (non-prologue) line we want to coalesce them. | |
21940 | PR 17276. */ | |
21941 | unsigned int discr | |
21942 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21943 | line_ptr += bytes_read; | |
21944 | ||
21945 | state_machine.handle_set_discriminator (discr); | |
21946 | } | |
d0c6ba3d | 21947 | break; |
c906108c | 21948 | default: |
b98664d3 | 21949 | complaint (_("mangled .debug_line section")); |
debd256d | 21950 | return; |
c906108c | 21951 | } |
a8c50c1f DJ |
21952 | /* Make sure that we parsed the extended op correctly. If e.g. |
21953 | we expected a different address size than the producer used, | |
21954 | we may have read the wrong number of bytes. */ | |
21955 | if (line_ptr != extended_end) | |
21956 | { | |
b98664d3 | 21957 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21958 | return; |
21959 | } | |
c906108c SS |
21960 | break; |
21961 | case DW_LNS_copy: | |
6f77053d | 21962 | state_machine.handle_copy (); |
c906108c SS |
21963 | break; |
21964 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21965 | { |
21966 | CORE_ADDR adjust | |
21967 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21968 | line_ptr += bytes_read; |
6f77053d PA |
21969 | |
21970 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21971 | } |
c906108c SS |
21972 | break; |
21973 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21974 | { |
21975 | int line_delta | |
21976 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21977 | line_ptr += bytes_read; |
6f77053d PA |
21978 | |
21979 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21980 | } |
c906108c SS |
21981 | break; |
21982 | case DW_LNS_set_file: | |
d9b3de22 | 21983 | { |
6f77053d | 21984 | file_name_index file |
ecfb656c PA |
21985 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21986 | &bytes_read); | |
d9b3de22 | 21987 | line_ptr += bytes_read; |
8c43009f | 21988 | |
6f77053d | 21989 | state_machine.handle_set_file (file); |
d9b3de22 | 21990 | } |
c906108c SS |
21991 | break; |
21992 | case DW_LNS_set_column: | |
0ad93d4f | 21993 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21994 | line_ptr += bytes_read; |
21995 | break; | |
21996 | case DW_LNS_negate_stmt: | |
6f77053d | 21997 | state_machine.handle_negate_stmt (); |
c906108c SS |
21998 | break; |
21999 | case DW_LNS_set_basic_block: | |
c906108c | 22000 | break; |
c2c6d25f JM |
22001 | /* Add to the address register of the state machine the |
22002 | address increment value corresponding to special opcode | |
a738430d MK |
22003 | 255. I.e., this value is scaled by the minimum |
22004 | instruction length since special opcode 255 would have | |
b021a221 | 22005 | scaled the increment. */ |
c906108c | 22006 | case DW_LNS_const_add_pc: |
6f77053d | 22007 | state_machine.handle_const_add_pc (); |
c906108c SS |
22008 | break; |
22009 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 22010 | { |
6f77053d | 22011 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 22012 | line_ptr += 2; |
6f77053d PA |
22013 | |
22014 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 22015 | } |
c906108c | 22016 | break; |
9aa1fe7e | 22017 | default: |
a738430d MK |
22018 | { |
22019 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 22020 | int i; |
a738430d | 22021 | |
debd256d | 22022 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
22023 | { |
22024 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
22025 | line_ptr += bytes_read; | |
22026 | } | |
22027 | } | |
c906108c SS |
22028 | } |
22029 | } | |
d9b3de22 DE |
22030 | |
22031 | if (!end_sequence) | |
22032 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
22033 | ||
22034 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
22035 | in which case we still finish recording the last line). */ | |
6f77053d | 22036 | state_machine.record_line (true); |
c906108c | 22037 | } |
f3f5162e DE |
22038 | } |
22039 | ||
22040 | /* Decode the Line Number Program (LNP) for the given line_header | |
22041 | structure and CU. The actual information extracted and the type | |
22042 | of structures created from the LNP depends on the value of PST. | |
22043 | ||
22044 | 1. If PST is NULL, then this procedure uses the data from the program | |
22045 | to create all necessary symbol tables, and their linetables. | |
22046 | ||
22047 | 2. If PST is not NULL, this procedure reads the program to determine | |
22048 | the list of files included by the unit represented by PST, and | |
22049 | builds all the associated partial symbol tables. | |
22050 | ||
22051 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
22052 | It is used for relative paths in the line table. | |
22053 | NOTE: When processing partial symtabs (pst != NULL), | |
22054 | comp_dir == pst->dirname. | |
22055 | ||
22056 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
22057 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
22058 | symtab we don't use it in the name of the psymtabs we create. | |
22059 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
22060 | A good testcase for this is mb-inline.exp. |
22061 | ||
527f3840 JK |
22062 | LOWPC is the lowest address in CU (or 0 if not known). |
22063 | ||
22064 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
22065 | for its PC<->lines mapping information. Otherwise only the filename | |
22066 | table is read in. */ | |
f3f5162e DE |
22067 | |
22068 | static void | |
22069 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 22070 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 22071 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 22072 | { |
5e22e966 | 22073 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 22074 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 22075 | |
527f3840 JK |
22076 | if (decode_mapping) |
22077 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
22078 | |
22079 | if (decode_for_pst_p) | |
22080 | { | |
aaa75496 | 22081 | /* Now that we're done scanning the Line Header Program, we can |
dda83cd7 | 22082 | create the psymtab of each included file. */ |
7ba99d21 | 22083 | for (auto &file_entry : lh->file_names ()) |
dda83cd7 SM |
22084 | if (file_entry.included_p == 1) |
22085 | { | |
c89b44cd | 22086 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 22087 | const char *include_name = |
7ba99d21 AT |
22088 | psymtab_include_file_name (lh, file_entry, pst, |
22089 | comp_dir, &name_holder); | |
c6da4cef | 22090 | if (include_name != NULL) |
dda83cd7 SM |
22091 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
22092 | } | |
aaa75496 | 22093 | } |
cb1df416 DJ |
22094 | else |
22095 | { | |
22096 | /* Make sure a symtab is created for every file, even files | |
22097 | which contain only variables (i.e. no code with associated | |
22098 | line numbers). */ | |
c24bdb02 KS |
22099 | buildsym_compunit *builder = cu->get_builder (); |
22100 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 22101 | |
7ba99d21 | 22102 | for (auto &fe : lh->file_names ()) |
cb1df416 | 22103 | { |
804d2729 | 22104 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 22105 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 22106 | { |
c24bdb02 | 22107 | builder->get_current_subfile ()->symtab |
804d2729 | 22108 | = allocate_symtab (cust, |
c24bdb02 | 22109 | builder->get_current_subfile ()->name); |
43f3e411 | 22110 | } |
c24bdb02 | 22111 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
22112 | } |
22113 | } | |
c906108c SS |
22114 | } |
22115 | ||
22116 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
22117 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 22118 | or NULL if not known. |
c906108c SS |
22119 | This routine tries to keep line numbers from identical absolute and |
22120 | relative file names in a common subfile. | |
22121 | ||
22122 | Using the `list' example from the GDB testsuite, which resides in | |
22123 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
22124 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
22125 | ||
c5aa993b | 22126 | DW_AT_name: /srcdir/list0.c |
4d663531 | 22127 | DW_AT_comp_dir: /compdir |
357e46e7 | 22128 | files.files[0].name: list0.h |
c5aa993b | 22129 | files.files[0].dir: /srcdir |
357e46e7 | 22130 | files.files[1].name: list0.c |
c5aa993b | 22131 | files.files[1].dir: /srcdir |
c906108c SS |
22132 | |
22133 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
22134 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
22135 | start_subfile will ensure that this happens provided that we pass the | |
22136 | concatenation of files.files[1].dir and files.files[1].name as the | |
22137 | subfile's name. */ | |
c906108c SS |
22138 | |
22139 | static void | |
804d2729 TT |
22140 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
22141 | const char *dirname) | |
c906108c | 22142 | { |
43816ebc | 22143 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 22144 | |
4d663531 | 22145 | /* In order not to lose the line information directory, |
4f1520fb FR |
22146 | we concatenate it to the filename when it makes sense. |
22147 | Note that the Dwarf3 standard says (speaking of filenames in line | |
22148 | information): ``The directory index is ignored for file names | |
22149 | that represent full path names''. Thus ignoring dirname in the | |
22150 | `else' branch below isn't an issue. */ | |
c906108c | 22151 | |
d5166ae1 | 22152 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 22153 | { |
43816ebc TT |
22154 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
22155 | filename = copy.get (); | |
d521ce57 | 22156 | } |
c906108c | 22157 | |
c24bdb02 | 22158 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
22159 | } |
22160 | ||
804d2729 TT |
22161 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
22162 | buildsym_compunit constructor. */ | |
f4dc4d17 | 22163 | |
c24bdb02 KS |
22164 | struct compunit_symtab * |
22165 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
22166 | CORE_ADDR low_pc) | |
f4dc4d17 | 22167 | { |
c24bdb02 | 22168 | gdb_assert (m_builder == nullptr); |
43f3e411 | 22169 | |
c24bdb02 | 22170 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 22171 | (this->per_objfile->objfile, |
c24bdb02 | 22172 | name, comp_dir, language, low_pc)); |
93b8bea4 | 22173 | |
c24bdb02 | 22174 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 22175 | |
c24bdb02 KS |
22176 | get_builder ()->record_debugformat ("DWARF 2"); |
22177 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 22178 | |
c24bdb02 | 22179 | processing_has_namespace_info = false; |
43f3e411 | 22180 | |
c24bdb02 | 22181 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
22182 | } |
22183 | ||
4c2df51b DJ |
22184 | static void |
22185 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 22186 | struct dwarf2_cu *cu) |
4c2df51b | 22187 | { |
5e22e966 | 22188 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
22189 | struct comp_unit_head *cu_header = &cu->header; |
22190 | ||
4c2df51b DJ |
22191 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
22192 | code here to turn a symbol with DW_AT_external and a | |
22193 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
22194 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
22195 | with some versions of binutils) where shared libraries could have | |
22196 | relocations against symbols in their debug information - the | |
22197 | minimal symbol would have the right address, but the debug info | |
22198 | would not. It's no longer necessary, because we will explicitly | |
22199 | apply relocations when we read in the debug information now. */ | |
22200 | ||
22201 | /* A DW_AT_location attribute with no contents indicates that a | |
22202 | variable has been optimized away. */ | |
9d2246fc | 22203 | if (attr->form_is_block () && attr->as_block ()->size == 0) |
4c2df51b | 22204 | { |
f1e6e072 | 22205 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
22206 | return; |
22207 | } | |
22208 | ||
22209 | /* Handle one degenerate form of location expression specially, to | |
22210 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
22211 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
22212 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 22213 | |
9d2246fc TT |
22214 | if (attr->form_is_block ()) |
22215 | { | |
22216 | struct dwarf_block *block = attr->as_block (); | |
22217 | ||
22218 | if ((block->data[0] == DW_OP_addr | |
22219 | && block->size == 1 + cu_header->addr_size) | |
22220 | || ((block->data[0] == DW_OP_GNU_addr_index | |
dda83cd7 | 22221 | || block->data[0] == DW_OP_addrx) |
9d2246fc TT |
22222 | && (block->size |
22223 | == 1 + leb128_size (&block->data[1])))) | |
22224 | { | |
22225 | unsigned int dummy; | |
22226 | ||
22227 | if (block->data[0] == DW_OP_addr) | |
22228 | SET_SYMBOL_VALUE_ADDRESS | |
22229 | (sym, cu->header.read_address (objfile->obfd, | |
22230 | block->data + 1, | |
38583298 | 22231 | &dummy)); |
9d2246fc TT |
22232 | else |
22233 | SET_SYMBOL_VALUE_ADDRESS | |
22234 | (sym, read_addr_index_from_leb128 (cu, block->data + 1, | |
22235 | &dummy)); | |
22236 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; | |
22237 | fixup_symbol_section (sym, objfile); | |
22238 | SET_SYMBOL_VALUE_ADDRESS | |
22239 | (sym, | |
22240 | SYMBOL_VALUE_ADDRESS (sym) | |
a52d653e | 22241 | + objfile->section_offsets[sym->section_index ()]); |
9d2246fc TT |
22242 | return; |
22243 | } | |
4c2df51b DJ |
22244 | } |
22245 | ||
22246 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
22247 | expression evaluator, and use LOC_COMPUTED only when necessary | |
22248 | (i.e. when the value of a register or memory location is | |
22249 | referenced, or a thread-local block, etc.). Then again, it might | |
22250 | not be worthwhile. I'm assuming that it isn't unless performance | |
22251 | or memory numbers show me otherwise. */ | |
22252 | ||
f1e6e072 | 22253 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 22254 | |
f1e6e072 | 22255 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 22256 | cu->has_loclist = true; |
4c2df51b DJ |
22257 | } |
22258 | ||
c906108c SS |
22259 | /* Given a pointer to a DWARF information entry, figure out if we need |
22260 | to make a symbol table entry for it, and if so, create a new entry | |
22261 | and return a pointer to it. | |
22262 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
22263 | used the passed type. |
22264 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
22265 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
22266 | |
22267 | static struct symbol * | |
5e2db402 TT |
22268 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
22269 | struct symbol *space) | |
c906108c | 22270 | { |
976ca316 SM |
22271 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22272 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 22273 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 22274 | struct symbol *sym = NULL; |
15d034d0 | 22275 | const char *name; |
c906108c SS |
22276 | struct attribute *attr = NULL; |
22277 | struct attribute *attr2 = NULL; | |
e142c38c | 22278 | CORE_ADDR baseaddr; |
e37fd15a SW |
22279 | struct pending **list_to_add = NULL; |
22280 | ||
edb3359d | 22281 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 22282 | |
b3b3bada | 22283 | baseaddr = objfile->text_section_offset (); |
c906108c | 22284 | |
94af9270 | 22285 | name = dwarf2_name (die, cu); |
c906108c SS |
22286 | if (name) |
22287 | { | |
34eaf542 | 22288 | int suppress_add = 0; |
94af9270 | 22289 | |
34eaf542 TT |
22290 | if (space) |
22291 | sym = space; | |
22292 | else | |
8c14c3a3 | 22293 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 22294 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
22295 | |
22296 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 22297 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
22298 | /* Fortran does not have mangling standard and the mangling does differ |
22299 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
22300 | const char *physname |
22301 | = (cu->language == language_fortran | |
22302 | ? dwarf2_full_name (name, die, cu) | |
22303 | : dwarf2_physname (name, die, cu)); | |
22304 | const char *linkagename = dw2_linkage_name (die, cu); | |
22305 | ||
22306 | if (linkagename == nullptr || cu->language == language_ada) | |
22307 | sym->set_linkage_name (physname); | |
22308 | else | |
22309 | { | |
22310 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
22311 | sym->set_linkage_name (linkagename); | |
22312 | } | |
f55ee35c | 22313 | |
c906108c | 22314 | /* Default assumptions. |
dda83cd7 | 22315 | Use the passed type or decode it from the die. */ |
176620f1 | 22316 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 22317 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
22318 | if (type != NULL) |
22319 | SYMBOL_TYPE (sym) = type; | |
22320 | else | |
e7c27a73 | 22321 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
22322 | attr = dwarf2_attr (die, |
22323 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
22324 | cu); | |
435d3d88 | 22325 | if (attr != nullptr) |
529908cb | 22326 | SYMBOL_LINE (sym) = attr->constant_value (0); |
cb1df416 | 22327 | |
edb3359d DJ |
22328 | attr = dwarf2_attr (die, |
22329 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
22330 | cu); | |
aa659cfa | 22331 | if (attr != nullptr && attr->is_nonnegative ()) |
cb1df416 | 22332 | { |
529908cb | 22333 | file_name_index file_index |
aa659cfa | 22334 | = (file_name_index) attr->as_nonnegative (); |
8c43009f | 22335 | struct file_entry *fe; |
9a619af0 | 22336 | |
ecfb656c PA |
22337 | if (cu->line_header != NULL) |
22338 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
22339 | else |
22340 | fe = NULL; | |
22341 | ||
22342 | if (fe == NULL) | |
b98664d3 | 22343 | complaint (_("file index out of range")); |
8c43009f PA |
22344 | else |
22345 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
22346 | } |
22347 | ||
c906108c SS |
22348 | switch (die->tag) |
22349 | { | |
22350 | case DW_TAG_label: | |
e142c38c | 22351 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 22352 | if (attr != nullptr) |
3e29f34a MR |
22353 | { |
22354 | CORE_ADDR addr; | |
22355 | ||
95f982e5 | 22356 | addr = attr->as_address (); |
3e29f34a | 22357 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 22358 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
8f5c6526 | 22359 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
3e29f34a | 22360 | } |
8f5c6526 TV |
22361 | else |
22362 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; | |
0f5238ed TT |
22363 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
22364 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
d3cb6808 | 22365 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
22366 | break; |
22367 | case DW_TAG_subprogram: | |
22368 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22369 | finish_block. */ | |
f1e6e072 | 22370 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 22371 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 22372 | if ((attr2 != nullptr && attr2->as_boolean ()) |
0a4b0913 AB |
22373 | || cu->language == language_ada |
22374 | || cu->language == language_fortran) | |
c906108c | 22375 | { |
dda83cd7 SM |
22376 | /* Subprograms marked external are stored as a global symbol. |
22377 | Ada and Fortran subprograms, whether marked external or | |
22378 | not, are always stored as a global symbol, because we want | |
22379 | to be able to access them globally. For instance, we want | |
22380 | to be able to break on a nested subprogram without having | |
22381 | to specify the context. */ | |
c24bdb02 | 22382 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
22383 | } |
22384 | else | |
22385 | { | |
e37fd15a | 22386 | list_to_add = cu->list_in_scope; |
c906108c SS |
22387 | } |
22388 | break; | |
edb3359d DJ |
22389 | case DW_TAG_inlined_subroutine: |
22390 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22391 | finish_block. */ | |
f1e6e072 | 22392 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 22393 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 22394 | list_to_add = cu->list_in_scope; |
edb3359d | 22395 | break; |
34eaf542 TT |
22396 | case DW_TAG_template_value_param: |
22397 | suppress_add = 1; | |
22398 | /* Fall through. */ | |
72929c62 | 22399 | case DW_TAG_constant: |
c906108c | 22400 | case DW_TAG_variable: |
254e6b9e | 22401 | case DW_TAG_member: |
0963b4bd MS |
22402 | /* Compilation with minimal debug info may result in |
22403 | variables with missing type entries. Change the | |
22404 | misleading `void' type to something sensible. */ | |
78134374 | 22405 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 22406 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 22407 | |
e142c38c | 22408 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
22409 | /* In the case of DW_TAG_member, we should only be called for |
22410 | static const members. */ | |
22411 | if (die->tag == DW_TAG_member) | |
22412 | { | |
3863f96c DE |
22413 | /* dwarf2_add_field uses die_is_declaration, |
22414 | so we do the same. */ | |
254e6b9e DE |
22415 | gdb_assert (die_is_declaration (die, cu)); |
22416 | gdb_assert (attr); | |
22417 | } | |
435d3d88 | 22418 | if (attr != nullptr) |
c906108c | 22419 | { |
e7c27a73 | 22420 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 22421 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 22422 | if (!suppress_add) |
34eaf542 | 22423 | { |
c45bc3f8 | 22424 | if (attr2 != nullptr && attr2->as_boolean ()) |
c24bdb02 | 22425 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 22426 | else |
e37fd15a | 22427 | list_to_add = cu->list_in_scope; |
34eaf542 | 22428 | } |
c906108c SS |
22429 | break; |
22430 | } | |
e142c38c | 22431 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 22432 | if (attr != nullptr) |
c906108c | 22433 | { |
e7c27a73 | 22434 | var_decode_location (attr, sym, cu); |
e142c38c | 22435 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
22436 | |
22437 | /* Fortran explicitly imports any global symbols to the local | |
22438 | scope by DW_TAG_common_block. */ | |
22439 | if (cu->language == language_fortran && die->parent | |
22440 | && die->parent->tag == DW_TAG_common_block) | |
22441 | attr2 = NULL; | |
22442 | ||
caac4577 JG |
22443 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22444 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 22445 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
22446 | { |
22447 | /* When a static variable is eliminated by the linker, | |
22448 | the corresponding debug information is not stripped | |
22449 | out, but the variable address is set to null; | |
22450 | do not add such variables into symbol table. */ | |
22451 | } | |
c45bc3f8 | 22452 | else if (attr2 != nullptr && attr2->as_boolean ()) |
1c809c68 | 22453 | { |
4b610737 TT |
22454 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22455 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 22456 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
22457 | { |
22458 | /* A global static variable might be subject to | |
22459 | copy relocation. We first check for a local | |
22460 | minsym, though, because maybe the symbol was | |
22461 | marked hidden, in which case this would not | |
22462 | apply. */ | |
22463 | bound_minimal_symbol found | |
22464 | = (lookup_minimal_symbol_linkage | |
987012b8 | 22465 | (sym->linkage_name (), objfile)); |
4b610737 TT |
22466 | if (found.minsym != nullptr) |
22467 | sym->maybe_copied = 1; | |
22468 | } | |
f55ee35c | 22469 | |
1c809c68 TT |
22470 | /* A variable with DW_AT_external is never static, |
22471 | but it may be block-scoped. */ | |
804d2729 | 22472 | list_to_add |
c24bdb02 KS |
22473 | = ((cu->list_in_scope |
22474 | == cu->get_builder ()->get_file_symbols ()) | |
22475 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22476 | : cu->list_in_scope); |
1c809c68 | 22477 | } |
c906108c | 22478 | else |
e37fd15a | 22479 | list_to_add = cu->list_in_scope; |
c906108c SS |
22480 | } |
22481 | else | |
22482 | { | |
22483 | /* We do not know the address of this symbol. | |
dda83cd7 SM |
22484 | If it is an external symbol and we have type information |
22485 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
22486 | The address of the variable will then be determined from | |
22487 | the minimal symbol table whenever the variable is | |
22488 | referenced. */ | |
e142c38c | 22489 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
22490 | |
22491 | /* Fortran explicitly imports any global symbols to the local | |
22492 | scope by DW_TAG_common_block. */ | |
22493 | if (cu->language == language_fortran && die->parent | |
22494 | && die->parent->tag == DW_TAG_common_block) | |
22495 | { | |
22496 | /* SYMBOL_CLASS doesn't matter here because | |
22497 | read_common_block is going to reset it. */ | |
22498 | if (!suppress_add) | |
22499 | list_to_add = cu->list_in_scope; | |
22500 | } | |
c45bc3f8 | 22501 | else if (attr2 != nullptr && attr2->as_boolean () |
0971de02 | 22502 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 22503 | { |
0fe7935b DJ |
22504 | /* A variable with DW_AT_external is never static, but it |
22505 | may be block-scoped. */ | |
804d2729 | 22506 | list_to_add |
c24bdb02 KS |
22507 | = ((cu->list_in_scope |
22508 | == cu->get_builder ()->get_file_symbols ()) | |
22509 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22510 | : cu->list_in_scope); |
0fe7935b | 22511 | |
f1e6e072 | 22512 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 22513 | } |
442ddf59 JK |
22514 | else if (!die_is_declaration (die, cu)) |
22515 | { | |
22516 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
22517 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
22518 | if (!suppress_add) |
22519 | list_to_add = cu->list_in_scope; | |
442ddf59 | 22520 | } |
c906108c SS |
22521 | } |
22522 | break; | |
22523 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
22524 | { |
22525 | /* If we are inside a function, mark this as an argument. If | |
22526 | not, we might be looking at an argument to an inlined function | |
22527 | when we do not have enough information to show inlined frames; | |
22528 | pretend it's a local variable in that case so that the user can | |
22529 | still see it. */ | |
804d2729 | 22530 | struct context_stack *curr |
c24bdb02 | 22531 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
22532 | if (curr != nullptr && curr->name != nullptr) |
22533 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
22534 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 22535 | if (attr != nullptr) |
a60f3166 TT |
22536 | { |
22537 | var_decode_location (attr, sym, cu); | |
22538 | } | |
22539 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 22540 | if (attr != nullptr) |
a60f3166 TT |
22541 | { |
22542 | dwarf2_const_value (attr, sym, cu); | |
22543 | } | |
f346a30d | 22544 | |
a60f3166 TT |
22545 | list_to_add = cu->list_in_scope; |
22546 | } | |
c906108c SS |
22547 | break; |
22548 | case DW_TAG_unspecified_parameters: | |
22549 | /* From varargs functions; gdb doesn't seem to have any | |
22550 | interest in this information, so just ignore it for now. | |
22551 | (FIXME?) */ | |
22552 | break; | |
34eaf542 TT |
22553 | case DW_TAG_template_type_param: |
22554 | suppress_add = 1; | |
22555 | /* Fall through. */ | |
c906108c | 22556 | case DW_TAG_class_type: |
680b30c7 | 22557 | case DW_TAG_interface_type: |
c906108c SS |
22558 | case DW_TAG_structure_type: |
22559 | case DW_TAG_union_type: | |
72019c9c | 22560 | case DW_TAG_set_type: |
c906108c | 22561 | case DW_TAG_enumeration_type: |
f1e6e072 | 22562 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22563 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 22564 | |
63d06c5c | 22565 | { |
9c37b5ae | 22566 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
22567 | really ever be static objects: otherwise, if you try |
22568 | to, say, break of a class's method and you're in a file | |
22569 | which doesn't mention that class, it won't work unless | |
22570 | the check for all static symbols in lookup_symbol_aux | |
22571 | saves you. See the OtherFileClass tests in | |
22572 | gdb.c++/namespace.exp. */ | |
22573 | ||
e37fd15a | 22574 | if (!suppress_add) |
34eaf542 | 22575 | { |
c24bdb02 | 22576 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 22577 | list_to_add |
c24bdb02 | 22578 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 22579 | && cu->language == language_cplus |
c24bdb02 | 22580 | ? builder->get_global_symbols () |
804d2729 | 22581 | : cu->list_in_scope); |
63d06c5c | 22582 | |
64382290 | 22583 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 22584 | ... }" also defines a typedef for "foo". */ |
64382290 | 22585 | if (cu->language == language_cplus |
45280282 | 22586 | || cu->language == language_ada |
c44af4eb TT |
22587 | || cu->language == language_d |
22588 | || cu->language == language_rust) | |
64382290 TT |
22589 | { |
22590 | /* The symbol's name is already allocated along | |
22591 | with this objfile, so we don't need to | |
22592 | duplicate it for the type. */ | |
7d93a1e0 | 22593 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 22594 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 22595 | } |
63d06c5c DC |
22596 | } |
22597 | } | |
c906108c SS |
22598 | break; |
22599 | case DW_TAG_typedef: | |
f1e6e072 | 22600 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 22601 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22602 | list_to_add = cu->list_in_scope; |
63d06c5c | 22603 | break; |
d8f62e84 | 22604 | case DW_TAG_array_type: |
c906108c | 22605 | case DW_TAG_base_type: |
dda83cd7 | 22606 | case DW_TAG_subrange_type: |
f1e6e072 | 22607 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22608 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22609 | list_to_add = cu->list_in_scope; |
c906108c SS |
22610 | break; |
22611 | case DW_TAG_enumerator: | |
e142c38c | 22612 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 22613 | if (attr != nullptr) |
c906108c | 22614 | { |
e7c27a73 | 22615 | dwarf2_const_value (attr, sym, cu); |
c906108c | 22616 | } |
63d06c5c DC |
22617 | { |
22618 | /* NOTE: carlton/2003-11-10: See comment above in the | |
22619 | DW_TAG_class_type, etc. block. */ | |
22620 | ||
804d2729 | 22621 | list_to_add |
c24bdb02 | 22622 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 22623 | && cu->language == language_cplus |
c24bdb02 | 22624 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 22625 | : cu->list_in_scope); |
63d06c5c | 22626 | } |
c906108c | 22627 | break; |
74921315 | 22628 | case DW_TAG_imported_declaration: |
5c4e30ca | 22629 | case DW_TAG_namespace: |
f1e6e072 | 22630 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 22631 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 22632 | break; |
530e8392 KB |
22633 | case DW_TAG_module: |
22634 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22635 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 22636 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 22637 | break; |
4357ac6c | 22638 | case DW_TAG_common_block: |
f1e6e072 | 22639 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 22640 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 22641 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 22642 | break; |
c906108c SS |
22643 | default: |
22644 | /* Not a tag we recognize. Hopefully we aren't processing | |
22645 | trash data, but since we must specifically ignore things | |
22646 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22647 | this point. */ |
b98664d3 | 22648 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 22649 | dwarf_tag_name (die->tag)); |
c906108c SS |
22650 | break; |
22651 | } | |
df8a16a1 | 22652 | |
e37fd15a SW |
22653 | if (suppress_add) |
22654 | { | |
22655 | sym->hash_next = objfile->template_symbols; | |
22656 | objfile->template_symbols = sym; | |
22657 | list_to_add = NULL; | |
22658 | } | |
22659 | ||
22660 | if (list_to_add != NULL) | |
d3cb6808 | 22661 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 22662 | |
df8a16a1 DJ |
22663 | /* For the benefit of old versions of GCC, check for anonymous |
22664 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22665 | if (!cu->processing_has_namespace_info |
94af9270 | 22666 | && cu->language == language_cplus) |
c24bdb02 | 22667 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
22668 | } |
22669 | return (sym); | |
22670 | } | |
22671 | ||
98bfdba5 PA |
22672 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22673 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22674 | standard (v4) is not entirely clear about the meaning of using | |
22675 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22676 | wider than the data. The conclusion of a discussion on the DWARF | |
22677 | list was that this is unspecified. We choose to always zero-extend | |
22678 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22679 | |
98bfdba5 | 22680 | static gdb_byte * |
ff39bb5e | 22681 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22682 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22683 | { |
5e22e966 | 22684 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
22685 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22686 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
529908cb | 22687 | LONGEST l = attr->constant_value (0); |
98bfdba5 PA |
22688 | |
22689 | if (bits < sizeof (*value) * 8) | |
22690 | { | |
22691 | l &= ((LONGEST) 1 << bits) - 1; | |
22692 | *value = l; | |
22693 | } | |
22694 | else if (bits == sizeof (*value) * 8) | |
22695 | *value = l; | |
22696 | else | |
22697 | { | |
224c3ddb | 22698 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22699 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22700 | return bytes; | |
22701 | } | |
22702 | ||
22703 | return NULL; | |
22704 | } | |
22705 | ||
22706 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22707 | the value does not fit in *VALUE, set *BYTES - either already | |
22708 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22709 | or, set *BATON, if we translated the constant to a location | |
22710 | expression. */ | |
22711 | ||
22712 | static void | |
ff39bb5e | 22713 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22714 | const char *name, struct obstack *obstack, |
22715 | struct dwarf2_cu *cu, | |
d521ce57 | 22716 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22717 | struct dwarf2_locexpr_baton **baton) |
22718 | { | |
5e22e966 | 22719 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 22720 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 22721 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22722 | struct dwarf_block *blk; |
98bfdba5 PA |
22723 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22724 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22725 | ||
22726 | *value = 0; | |
22727 | *bytes = NULL; | |
22728 | *baton = NULL; | |
c906108c SS |
22729 | |
22730 | switch (attr->form) | |
22731 | { | |
22732 | case DW_FORM_addr: | |
336d760d | 22733 | case DW_FORM_addrx: |
3019eac3 | 22734 | case DW_FORM_GNU_addr_index: |
ac56253d | 22735 | { |
ac56253d TT |
22736 | gdb_byte *data; |
22737 | ||
98bfdba5 PA |
22738 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22739 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22740 | cu_header->addr_size, |
98bfdba5 | 22741 | TYPE_LENGTH (type)); |
ac56253d TT |
22742 | /* Symbols of this form are reasonably rare, so we just |
22743 | piggyback on the existing location code rather than writing | |
22744 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22745 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 22746 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
22747 | (*baton)->per_cu = cu->per_cu; |
22748 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22749 | |
98bfdba5 | 22750 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22751 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22752 | (*baton)->data = data; |
ac56253d TT |
22753 | |
22754 | data[0] = DW_OP_addr; | |
22755 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
36d378cf | 22756 | byte_order, attr->as_address ()); |
ac56253d | 22757 | data[cu_header->addr_size + 1] = DW_OP_stack_value; |
ac56253d | 22758 | } |
c906108c | 22759 | break; |
4ac36638 | 22760 | case DW_FORM_string: |
93b5768b | 22761 | case DW_FORM_strp: |
cf532bd1 | 22762 | case DW_FORM_strx: |
3019eac3 | 22763 | case DW_FORM_GNU_str_index: |
36586728 | 22764 | case DW_FORM_GNU_strp_alt: |
c6481205 | 22765 | /* The string is already allocated on the objfile obstack, point |
98bfdba5 | 22766 | directly to it. */ |
2c830f54 | 22767 | *bytes = (const gdb_byte *) attr->as_string (); |
93b5768b | 22768 | break; |
c906108c SS |
22769 | case DW_FORM_block1: |
22770 | case DW_FORM_block2: | |
22771 | case DW_FORM_block4: | |
22772 | case DW_FORM_block: | |
2dc7f7b3 | 22773 | case DW_FORM_exprloc: |
0224619f | 22774 | case DW_FORM_data16: |
9d2246fc | 22775 | blk = attr->as_block (); |
98bfdba5 PA |
22776 | if (TYPE_LENGTH (type) != blk->size) |
22777 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22778 | TYPE_LENGTH (type)); | |
22779 | *bytes = blk->data; | |
c906108c | 22780 | break; |
2df3850c JM |
22781 | |
22782 | /* The DW_AT_const_value attributes are supposed to carry the | |
22783 | symbol's value "represented as it would be on the target | |
22784 | architecture." By the time we get here, it's already been | |
22785 | converted to host endianness, so we just need to sign- or | |
22786 | zero-extend it as appropriate. */ | |
22787 | case DW_FORM_data1: | |
3aef2284 | 22788 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22789 | break; |
c906108c | 22790 | case DW_FORM_data2: |
3aef2284 | 22791 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22792 | break; |
c906108c | 22793 | case DW_FORM_data4: |
3aef2284 | 22794 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22795 | break; |
c906108c | 22796 | case DW_FORM_data8: |
3aef2284 | 22797 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22798 | break; |
22799 | ||
c906108c | 22800 | case DW_FORM_sdata: |
663c44ac | 22801 | case DW_FORM_implicit_const: |
1bc397c5 | 22802 | *value = attr->as_signed (); |
2df3850c JM |
22803 | break; |
22804 | ||
c906108c | 22805 | case DW_FORM_udata: |
529908cb | 22806 | *value = attr->as_unsigned (); |
c906108c | 22807 | break; |
2df3850c | 22808 | |
c906108c | 22809 | default: |
b98664d3 | 22810 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22811 | dwarf_form_name (attr->form)); |
98bfdba5 | 22812 | *value = 0; |
c906108c SS |
22813 | break; |
22814 | } | |
22815 | } | |
22816 | ||
2df3850c | 22817 | |
98bfdba5 PA |
22818 | /* Copy constant value from an attribute to a symbol. */ |
22819 | ||
2df3850c | 22820 | static void |
ff39bb5e | 22821 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22822 | struct dwarf2_cu *cu) |
2df3850c | 22823 | { |
5e22e966 | 22824 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 22825 | LONGEST value; |
d521ce57 | 22826 | const gdb_byte *bytes; |
98bfdba5 | 22827 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22828 | |
98bfdba5 | 22829 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 22830 | sym->print_name (), |
98bfdba5 PA |
22831 | &objfile->objfile_obstack, cu, |
22832 | &value, &bytes, &baton); | |
2df3850c | 22833 | |
98bfdba5 PA |
22834 | if (baton != NULL) |
22835 | { | |
98bfdba5 | 22836 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22837 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22838 | } |
22839 | else if (bytes != NULL) | |
22840 | { | |
22841 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22842 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22843 | } |
22844 | else | |
22845 | { | |
22846 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22847 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22848 | } |
2df3850c JM |
22849 | } |
22850 | ||
c906108c SS |
22851 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22852 | ||
22853 | static struct type * | |
e7c27a73 | 22854 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22855 | { |
c906108c | 22856 | struct attribute *type_attr; |
c906108c | 22857 | |
e142c38c | 22858 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22859 | if (!type_attr) |
22860 | { | |
5e22e966 | 22861 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22862 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22863 | return objfile_type (objfile)->builtin_void; |
c906108c | 22864 | } |
348e048f | 22865 | |
673bfd45 | 22866 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22867 | } |
22868 | ||
b4ba55a1 JB |
22869 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22870 | that allows to find parallel types through that information instead | |
22871 | of having to do expensive parallel lookups by type name. */ | |
22872 | ||
22873 | static int | |
22874 | need_gnat_info (struct dwarf2_cu *cu) | |
22875 | { | |
de4cb04a JB |
22876 | /* Assume that the Ada compiler was GNAT, which always produces |
22877 | the auxiliary information. */ | |
22878 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22879 | } |
22880 | ||
b4ba55a1 JB |
22881 | /* Return the auxiliary type of the die in question using its |
22882 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22883 | attribute is not present. */ | |
22884 | ||
22885 | static struct type * | |
22886 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22887 | { | |
b4ba55a1 | 22888 | struct attribute *type_attr; |
b4ba55a1 JB |
22889 | |
22890 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22891 | if (!type_attr) | |
22892 | return NULL; | |
22893 | ||
673bfd45 | 22894 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22895 | } |
22896 | ||
22897 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22898 | descriptive type accordingly. */ | |
22899 | ||
22900 | static void | |
22901 | set_descriptive_type (struct type *type, struct die_info *die, | |
22902 | struct dwarf2_cu *cu) | |
22903 | { | |
22904 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22905 | ||
22906 | if (descriptive_type) | |
22907 | { | |
22908 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22909 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22910 | } | |
22911 | } | |
22912 | ||
c906108c SS |
22913 | /* Return the containing type of the die in question using its |
22914 | DW_AT_containing_type attribute. */ | |
22915 | ||
22916 | static struct type * | |
e7c27a73 | 22917 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22918 | { |
c906108c | 22919 | struct attribute *type_attr; |
5e22e966 | 22920 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22921 | |
e142c38c | 22922 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22923 | if (!type_attr) |
22924 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22925 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22926 | |
673bfd45 | 22927 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22928 | } |
22929 | ||
ac9ec31b DE |
22930 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22931 | ||
22932 | static struct type * | |
22933 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22934 | { | |
976ca316 SM |
22935 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22936 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 22937 | char *saved; |
ac9ec31b | 22938 | |
528e1572 SM |
22939 | std::string message |
22940 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22941 | objfile_name (objfile), | |
22942 | sect_offset_str (cu->header.sect_off), | |
22943 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22944 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22945 | |
19f392bc | 22946 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22947 | } |
22948 | ||
673bfd45 | 22949 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22950 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22951 | DW_AT_containing_type. | |
673bfd45 DE |
22952 | If there is no type substitute an error marker. */ |
22953 | ||
c906108c | 22954 | static struct type * |
ff39bb5e | 22955 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22956 | struct dwarf2_cu *cu) |
c906108c | 22957 | { |
976ca316 SM |
22958 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22959 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
22960 | struct type *this_type; |
22961 | ||
ac9ec31b DE |
22962 | gdb_assert (attr->name == DW_AT_type |
22963 | || attr->name == DW_AT_GNAT_descriptive_type | |
22964 | || attr->name == DW_AT_containing_type); | |
22965 | ||
673bfd45 DE |
22966 | /* First see if we have it cached. */ |
22967 | ||
36586728 TT |
22968 | if (attr->form == DW_FORM_GNU_ref_alt) |
22969 | { | |
22970 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 22971 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 22972 | |
976ca316 SM |
22973 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
22974 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 22975 | } |
cd6c91b4 | 22976 | else if (attr->form_is_ref ()) |
673bfd45 | 22977 | { |
0826b30a | 22978 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 22979 | |
976ca316 | 22980 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 22981 | } |
55f1336d | 22982 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22983 | { |
630ed6b9 | 22984 | ULONGEST signature = attr->as_signature (); |
673bfd45 | 22985 | |
ac9ec31b | 22986 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22987 | } |
22988 | else | |
22989 | { | |
b98664d3 | 22990 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22991 | " at %s [in module %s]"), |
22992 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22993 | objfile_name (objfile)); |
ac9ec31b | 22994 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22995 | } |
22996 | ||
22997 | /* If not cached we need to read it in. */ | |
22998 | ||
22999 | if (this_type == NULL) | |
23000 | { | |
ac9ec31b | 23001 | struct die_info *type_die = NULL; |
673bfd45 DE |
23002 | struct dwarf2_cu *type_cu = cu; |
23003 | ||
cd6c91b4 | 23004 | if (attr->form_is_ref ()) |
ac9ec31b DE |
23005 | type_die = follow_die_ref (die, attr, &type_cu); |
23006 | if (type_die == NULL) | |
23007 | return build_error_marker_type (cu, die); | |
23008 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
23009 | from an inter-CU reference and the type's CU got expanded before |
23010 | ours. */ | |
ac9ec31b | 23011 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
23012 | } |
23013 | ||
23014 | /* If we still don't have a type use an error marker. */ | |
23015 | ||
23016 | if (this_type == NULL) | |
ac9ec31b | 23017 | return build_error_marker_type (cu, die); |
673bfd45 | 23018 | |
f792889a | 23019 | return this_type; |
c906108c SS |
23020 | } |
23021 | ||
673bfd45 DE |
23022 | /* Return the type in DIE, CU. |
23023 | Returns NULL for invalid types. | |
23024 | ||
02142a6c | 23025 | This first does a lookup in die_type_hash, |
673bfd45 DE |
23026 | and only reads the die in if necessary. |
23027 | ||
23028 | NOTE: This can be called when reading in partial or full symbols. */ | |
23029 | ||
f792889a | 23030 | static struct type * |
e7c27a73 | 23031 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23032 | { |
f792889a DJ |
23033 | struct type *this_type; |
23034 | ||
23035 | this_type = get_die_type (die, cu); | |
23036 | if (this_type) | |
23037 | return this_type; | |
23038 | ||
673bfd45 DE |
23039 | return read_type_die_1 (die, cu); |
23040 | } | |
23041 | ||
23042 | /* Read the type in DIE, CU. | |
23043 | Returns NULL for invalid types. */ | |
23044 | ||
23045 | static struct type * | |
23046 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
23047 | { | |
23048 | struct type *this_type = NULL; | |
23049 | ||
c906108c SS |
23050 | switch (die->tag) |
23051 | { | |
23052 | case DW_TAG_class_type: | |
680b30c7 | 23053 | case DW_TAG_interface_type: |
c906108c SS |
23054 | case DW_TAG_structure_type: |
23055 | case DW_TAG_union_type: | |
f792889a | 23056 | this_type = read_structure_type (die, cu); |
c906108c SS |
23057 | break; |
23058 | case DW_TAG_enumeration_type: | |
f792889a | 23059 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
23060 | break; |
23061 | case DW_TAG_subprogram: | |
23062 | case DW_TAG_subroutine_type: | |
edb3359d | 23063 | case DW_TAG_inlined_subroutine: |
f792889a | 23064 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
23065 | break; |
23066 | case DW_TAG_array_type: | |
f792889a | 23067 | this_type = read_array_type (die, cu); |
c906108c | 23068 | break; |
72019c9c | 23069 | case DW_TAG_set_type: |
f792889a | 23070 | this_type = read_set_type (die, cu); |
72019c9c | 23071 | break; |
c906108c | 23072 | case DW_TAG_pointer_type: |
f792889a | 23073 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
23074 | break; |
23075 | case DW_TAG_ptr_to_member_type: | |
f792889a | 23076 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
23077 | break; |
23078 | case DW_TAG_reference_type: | |
4297a3f0 AV |
23079 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
23080 | break; | |
23081 | case DW_TAG_rvalue_reference_type: | |
23082 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
23083 | break; |
23084 | case DW_TAG_const_type: | |
f792889a | 23085 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
23086 | break; |
23087 | case DW_TAG_volatile_type: | |
f792889a | 23088 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 23089 | break; |
06d66ee9 TT |
23090 | case DW_TAG_restrict_type: |
23091 | this_type = read_tag_restrict_type (die, cu); | |
23092 | break; | |
c906108c | 23093 | case DW_TAG_string_type: |
f792889a | 23094 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
23095 | break; |
23096 | case DW_TAG_typedef: | |
f792889a | 23097 | this_type = read_typedef (die, cu); |
c906108c | 23098 | break; |
a02abb62 | 23099 | case DW_TAG_subrange_type: |
f792889a | 23100 | this_type = read_subrange_type (die, cu); |
a02abb62 | 23101 | break; |
c906108c | 23102 | case DW_TAG_base_type: |
f792889a | 23103 | this_type = read_base_type (die, cu); |
c906108c | 23104 | break; |
81a17f79 | 23105 | case DW_TAG_unspecified_type: |
f792889a | 23106 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 23107 | break; |
0114d602 DJ |
23108 | case DW_TAG_namespace: |
23109 | this_type = read_namespace_type (die, cu); | |
23110 | break; | |
f55ee35c JK |
23111 | case DW_TAG_module: |
23112 | this_type = read_module_type (die, cu); | |
23113 | break; | |
a2c2acaf MW |
23114 | case DW_TAG_atomic_type: |
23115 | this_type = read_tag_atomic_type (die, cu); | |
23116 | break; | |
c906108c | 23117 | default: |
b98664d3 | 23118 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 23119 | dwarf_tag_name (die->tag)); |
c906108c SS |
23120 | break; |
23121 | } | |
63d06c5c | 23122 | |
f792889a | 23123 | return this_type; |
63d06c5c DC |
23124 | } |
23125 | ||
abc72ce4 DE |
23126 | /* See if we can figure out if the class lives in a namespace. We do |
23127 | this by looking for a member function; its demangled name will | |
23128 | contain namespace info, if there is any. | |
23129 | Return the computed name or NULL. | |
23130 | Space for the result is allocated on the objfile's obstack. | |
23131 | This is the full-die version of guess_partial_die_structure_name. | |
23132 | In this case we know DIE has no useful parent. */ | |
23133 | ||
43816ebc | 23134 | static const char * |
abc72ce4 DE |
23135 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
23136 | { | |
23137 | struct die_info *spec_die; | |
23138 | struct dwarf2_cu *spec_cu; | |
23139 | struct die_info *child; | |
5e22e966 | 23140 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
23141 | |
23142 | spec_cu = cu; | |
23143 | spec_die = die_specification (die, &spec_cu); | |
23144 | if (spec_die != NULL) | |
23145 | { | |
23146 | die = spec_die; | |
23147 | cu = spec_cu; | |
23148 | } | |
23149 | ||
23150 | for (child = die->child; | |
23151 | child != NULL; | |
23152 | child = child->sibling) | |
23153 | { | |
23154 | if (child->tag == DW_TAG_subprogram) | |
23155 | { | |
73b9be8b | 23156 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 23157 | |
7d45c7c3 | 23158 | if (linkage_name != NULL) |
abc72ce4 | 23159 | { |
43816ebc | 23160 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 23161 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 23162 | const char *name = NULL; |
abc72ce4 DE |
23163 | |
23164 | if (actual_name != NULL) | |
23165 | { | |
15d034d0 | 23166 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
23167 | |
23168 | if (die_name != NULL | |
43816ebc | 23169 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
23170 | { |
23171 | /* Strip off the class name from the full name. | |
23172 | We want the prefix. */ | |
23173 | int die_name_len = strlen (die_name); | |
43816ebc TT |
23174 | int actual_name_len = strlen (actual_name.get ()); |
23175 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
23176 | |
23177 | /* Test for '::' as a sanity check. */ | |
23178 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 23179 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 23180 | name = obstack_strndup ( |
e3b94546 | 23181 | &objfile->per_bfd->storage_obstack, |
43816ebc | 23182 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
23183 | } |
23184 | } | |
abc72ce4 DE |
23185 | return name; |
23186 | } | |
23187 | } | |
23188 | } | |
23189 | ||
23190 | return NULL; | |
23191 | } | |
23192 | ||
96408a79 SA |
23193 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
23194 | prefix part in such case. See | |
23195 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
23196 | ||
a121b7c1 | 23197 | static const char * |
96408a79 SA |
23198 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
23199 | { | |
23200 | struct attribute *attr; | |
e6a959d6 | 23201 | const char *base; |
96408a79 SA |
23202 | |
23203 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
23204 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
23205 | return NULL; | |
23206 | ||
7d45c7c3 | 23207 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
23208 | return NULL; |
23209 | ||
73b9be8b | 23210 | attr = dw2_linkage_name_attr (die, cu); |
2c830f54 TT |
23211 | const char *attr_name = attr->as_string (); |
23212 | if (attr == NULL || attr_name == NULL) | |
96408a79 SA |
23213 | return NULL; |
23214 | ||
23215 | /* dwarf2_name had to be already called. */ | |
3b64bf15 | 23216 | gdb_assert (attr->canonical_string_p ()); |
96408a79 SA |
23217 | |
23218 | /* Strip the base name, keep any leading namespaces/classes. */ | |
2c830f54 TT |
23219 | base = strrchr (attr_name, ':'); |
23220 | if (base == NULL || base == attr_name || base[-1] != ':') | |
96408a79 SA |
23221 | return ""; |
23222 | ||
5e22e966 | 23223 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 | 23224 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
2c830f54 TT |
23225 | attr_name, |
23226 | &base[-1] - attr_name); | |
96408a79 SA |
23227 | } |
23228 | ||
fdde2d81 | 23229 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 23230 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 23231 | |
0114d602 DJ |
23232 | For example, if we're within the method foo() in the following |
23233 | code: | |
23234 | ||
23235 | namespace N { | |
23236 | class C { | |
23237 | void foo () { | |
23238 | } | |
23239 | }; | |
23240 | } | |
23241 | ||
23242 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 23243 | |
0d5cff50 | 23244 | static const char * |
e142c38c | 23245 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 23246 | { |
976ca316 | 23247 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
23248 | struct die_info *parent, *spec_die; |
23249 | struct dwarf2_cu *spec_cu; | |
23250 | struct type *parent_type; | |
a121b7c1 | 23251 | const char *retval; |
63d06c5c | 23252 | |
9c37b5ae | 23253 | if (cu->language != language_cplus |
c44af4eb TT |
23254 | && cu->language != language_fortran && cu->language != language_d |
23255 | && cu->language != language_rust) | |
0114d602 DJ |
23256 | return ""; |
23257 | ||
96408a79 SA |
23258 | retval = anonymous_struct_prefix (die, cu); |
23259 | if (retval) | |
23260 | return retval; | |
23261 | ||
0114d602 DJ |
23262 | /* We have to be careful in the presence of DW_AT_specification. |
23263 | For example, with GCC 3.4, given the code | |
23264 | ||
23265 | namespace N { | |
23266 | void foo() { | |
23267 | // Definition of N::foo. | |
23268 | } | |
23269 | } | |
23270 | ||
23271 | then we'll have a tree of DIEs like this: | |
23272 | ||
23273 | 1: DW_TAG_compile_unit | |
23274 | 2: DW_TAG_namespace // N | |
23275 | 3: DW_TAG_subprogram // declaration of N::foo | |
23276 | 4: DW_TAG_subprogram // definition of N::foo | |
23277 | DW_AT_specification // refers to die #3 | |
23278 | ||
23279 | Thus, when processing die #4, we have to pretend that we're in | |
23280 | the context of its DW_AT_specification, namely the contex of die | |
23281 | #3. */ | |
23282 | spec_cu = cu; | |
23283 | spec_die = die_specification (die, &spec_cu); | |
23284 | if (spec_die == NULL) | |
23285 | parent = die->parent; | |
23286 | else | |
63d06c5c | 23287 | { |
0114d602 DJ |
23288 | parent = spec_die->parent; |
23289 | cu = spec_cu; | |
63d06c5c | 23290 | } |
0114d602 DJ |
23291 | |
23292 | if (parent == NULL) | |
23293 | return ""; | |
98bfdba5 PA |
23294 | else if (parent->building_fullname) |
23295 | { | |
23296 | const char *name; | |
23297 | const char *parent_name; | |
23298 | ||
23299 | /* It has been seen on RealView 2.2 built binaries, | |
23300 | DW_TAG_template_type_param types actually _defined_ as | |
23301 | children of the parent class: | |
23302 | ||
23303 | enum E {}; | |
23304 | template class <class Enum> Class{}; | |
23305 | Class<enum E> class_e; | |
23306 | ||
dda83cd7 SM |
23307 | 1: DW_TAG_class_type (Class) |
23308 | 2: DW_TAG_enumeration_type (E) | |
23309 | 3: DW_TAG_enumerator (enum1:0) | |
23310 | 3: DW_TAG_enumerator (enum2:1) | |
23311 | ... | |
23312 | 2: DW_TAG_template_type_param | |
23313 | DW_AT_type DW_FORM_ref_udata (E) | |
98bfdba5 PA |
23314 | |
23315 | Besides being broken debug info, it can put GDB into an | |
23316 | infinite loop. Consider: | |
23317 | ||
23318 | When we're building the full name for Class<E>, we'll start | |
23319 | at Class, and go look over its template type parameters, | |
23320 | finding E. We'll then try to build the full name of E, and | |
23321 | reach here. We're now trying to build the full name of E, | |
23322 | and look over the parent DIE for containing scope. In the | |
23323 | broken case, if we followed the parent DIE of E, we'd again | |
23324 | find Class, and once again go look at its template type | |
23325 | arguments, etc., etc. Simply don't consider such parent die | |
23326 | as source-level parent of this die (it can't be, the language | |
23327 | doesn't allow it), and break the loop here. */ | |
23328 | name = dwarf2_name (die, cu); | |
23329 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 23330 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
23331 | name ? name : "<unknown>", |
23332 | parent_name ? parent_name : "<unknown>"); | |
23333 | return ""; | |
23334 | } | |
63d06c5c | 23335 | else |
0114d602 DJ |
23336 | switch (parent->tag) |
23337 | { | |
63d06c5c | 23338 | case DW_TAG_namespace: |
0114d602 | 23339 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
23340 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
23341 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
23342 | Work around this problem here. */ | |
23343 | if (cu->language == language_cplus | |
7d93a1e0 | 23344 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 23345 | return ""; |
0114d602 | 23346 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 23347 | return parent_type->name (); |
63d06c5c | 23348 | case DW_TAG_class_type: |
680b30c7 | 23349 | case DW_TAG_interface_type: |
63d06c5c | 23350 | case DW_TAG_structure_type: |
0114d602 | 23351 | case DW_TAG_union_type: |
f55ee35c | 23352 | case DW_TAG_module: |
0114d602 | 23353 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
23354 | if (parent_type->name () != NULL) |
23355 | return parent_type->name (); | |
0114d602 DJ |
23356 | else |
23357 | /* An anonymous structure is only allowed non-static data | |
23358 | members; no typedefs, no member functions, et cetera. | |
23359 | So it does not need a prefix. */ | |
23360 | return ""; | |
abc72ce4 | 23361 | case DW_TAG_compile_unit: |
95554aad | 23362 | case DW_TAG_partial_unit: |
abc72ce4 DE |
23363 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
23364 | if (cu->language == language_cplus | |
976ca316 | 23365 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
23366 | && die->child != NULL |
23367 | && (die->tag == DW_TAG_class_type | |
23368 | || die->tag == DW_TAG_structure_type | |
23369 | || die->tag == DW_TAG_union_type)) | |
23370 | { | |
43816ebc | 23371 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
23372 | if (name != NULL) |
23373 | return name; | |
23374 | } | |
23375 | return ""; | |
0a4b0913 AB |
23376 | case DW_TAG_subprogram: |
23377 | /* Nested subroutines in Fortran get a prefix with the name | |
23378 | of the parent's subroutine. */ | |
23379 | if (cu->language == language_fortran) | |
23380 | { | |
23381 | if ((die->tag == DW_TAG_subprogram) | |
23382 | && (dwarf2_name (parent, cu) != NULL)) | |
23383 | return dwarf2_name (parent, cu); | |
23384 | } | |
23385 | return determine_prefix (parent, cu); | |
3d567982 TT |
23386 | case DW_TAG_enumeration_type: |
23387 | parent_type = read_type_die (parent, cu); | |
23388 | if (TYPE_DECLARED_CLASS (parent_type)) | |
23389 | { | |
7d93a1e0 SM |
23390 | if (parent_type->name () != NULL) |
23391 | return parent_type->name (); | |
3d567982 TT |
23392 | return ""; |
23393 | } | |
23394 | /* Fall through. */ | |
63d06c5c | 23395 | default: |
8176b9b8 | 23396 | return determine_prefix (parent, cu); |
63d06c5c | 23397 | } |
63d06c5c DC |
23398 | } |
23399 | ||
3e43a32a MS |
23400 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
23401 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
23402 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
23403 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
23404 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 23405 | |
f55ee35c | 23406 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
23407 | |
23408 | static char * | |
f55ee35c | 23409 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
dda83cd7 | 23410 | int physname, struct dwarf2_cu *cu) |
63d06c5c | 23411 | { |
f55ee35c | 23412 | const char *lead = ""; |
5c315b68 | 23413 | const char *sep; |
63d06c5c | 23414 | |
3e43a32a MS |
23415 | if (suffix == NULL || suffix[0] == '\0' |
23416 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 23417 | sep = ""; |
45280282 IB |
23418 | else if (cu->language == language_d) |
23419 | { | |
23420 | /* For D, the 'main' function could be defined in any module, but it | |
23421 | should never be prefixed. */ | |
23422 | if (strcmp (suffix, "D main") == 0) | |
23423 | { | |
23424 | prefix = ""; | |
23425 | sep = ""; | |
23426 | } | |
23427 | else | |
23428 | sep = "."; | |
23429 | } | |
f55ee35c JK |
23430 | else if (cu->language == language_fortran && physname) |
23431 | { | |
23432 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
23433 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
23434 | ||
23435 | lead = "__"; | |
23436 | sep = "_MOD_"; | |
23437 | } | |
987504bb JJ |
23438 | else |
23439 | sep = "::"; | |
63d06c5c | 23440 | |
6dd47d34 DE |
23441 | if (prefix == NULL) |
23442 | prefix = ""; | |
23443 | if (suffix == NULL) | |
23444 | suffix = ""; | |
23445 | ||
987504bb JJ |
23446 | if (obs == NULL) |
23447 | { | |
3e43a32a | 23448 | char *retval |
224c3ddb SM |
23449 | = ((char *) |
23450 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 23451 | |
f55ee35c JK |
23452 | strcpy (retval, lead); |
23453 | strcat (retval, prefix); | |
6dd47d34 DE |
23454 | strcat (retval, sep); |
23455 | strcat (retval, suffix); | |
63d06c5c DC |
23456 | return retval; |
23457 | } | |
987504bb JJ |
23458 | else |
23459 | { | |
23460 | /* We have an obstack. */ | |
f55ee35c | 23461 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 23462 | } |
63d06c5c DC |
23463 | } |
23464 | ||
71c25dea TT |
23465 | /* Get name of a die, return NULL if not found. */ |
23466 | ||
15d034d0 TT |
23467 | static const char * |
23468 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 23469 | struct objfile *objfile) |
71c25dea TT |
23470 | { |
23471 | if (name && cu->language == language_cplus) | |
23472 | { | |
596dc4ad TT |
23473 | gdb::unique_xmalloc_ptr<char> canon_name |
23474 | = cp_canonicalize_string (name); | |
71c25dea | 23475 | |
596dc4ad TT |
23476 | if (canon_name != nullptr) |
23477 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
23478 | } |
23479 | ||
23480 | return name; | |
c906108c SS |
23481 | } |
23482 | ||
96553a0c DE |
23483 | /* Get name of a die, return NULL if not found. |
23484 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 23485 | |
15d034d0 | 23486 | static const char * |
e142c38c | 23487 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
23488 | { |
23489 | struct attribute *attr; | |
5e22e966 | 23490 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 23491 | |
e142c38c | 23492 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2c830f54 TT |
23493 | const char *attr_name = attr == nullptr ? nullptr : attr->as_string (); |
23494 | if (attr_name == nullptr | |
96553a0c | 23495 | && die->tag != DW_TAG_namespace |
53832f31 TT |
23496 | && die->tag != DW_TAG_class_type |
23497 | && die->tag != DW_TAG_interface_type | |
23498 | && die->tag != DW_TAG_structure_type | |
23499 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
23500 | return NULL; |
23501 | ||
23502 | switch (die->tag) | |
23503 | { | |
23504 | case DW_TAG_compile_unit: | |
95554aad | 23505 | case DW_TAG_partial_unit: |
71c25dea TT |
23506 | /* Compilation units have a DW_AT_name that is a filename, not |
23507 | a source language identifier. */ | |
23508 | case DW_TAG_enumeration_type: | |
23509 | case DW_TAG_enumerator: | |
23510 | /* These tags always have simple identifiers already; no need | |
23511 | to canonicalize them. */ | |
2c830f54 | 23512 | return attr_name; |
907af001 | 23513 | |
96553a0c | 23514 | case DW_TAG_namespace: |
2c830f54 TT |
23515 | if (attr_name != nullptr) |
23516 | return attr_name; | |
96553a0c DE |
23517 | return CP_ANONYMOUS_NAMESPACE_STR; |
23518 | ||
907af001 UW |
23519 | case DW_TAG_class_type: |
23520 | case DW_TAG_interface_type: | |
23521 | case DW_TAG_structure_type: | |
23522 | case DW_TAG_union_type: | |
23523 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
23524 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
23525 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
23526 | and GCC 4.4. We work around this problem by ignoring these. */ | |
2c830f54 TT |
23527 | if (attr_name != nullptr |
23528 | && (startswith (attr_name, "._") | |
23529 | || startswith (attr_name, "<anonymous"))) | |
907af001 | 23530 | return NULL; |
53832f31 TT |
23531 | |
23532 | /* GCC might emit a nameless typedef that has a linkage name. See | |
23533 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
2c830f54 | 23534 | if (!attr || attr_name == NULL) |
53832f31 | 23535 | { |
73b9be8b | 23536 | attr = dw2_linkage_name_attr (die, cu); |
95eb9e54 | 23537 | attr_name = attr == nullptr ? nullptr : attr->as_string (); |
2c830f54 | 23538 | if (attr == NULL || attr_name == NULL) |
53832f31 TT |
23539 | return NULL; |
23540 | ||
2c830f54 | 23541 | /* Avoid demangling attr_name the second time on a second |
df5c6c50 | 23542 | call for the same DIE. */ |
3b64bf15 | 23543 | if (!attr->canonical_string_p ()) |
53832f31 | 23544 | { |
43816ebc | 23545 | gdb::unique_xmalloc_ptr<char> demangled |
2c830f54 | 23546 | (gdb_demangle (attr_name, DMGL_TYPES)); |
4f180d53 AT |
23547 | if (demangled == nullptr) |
23548 | return nullptr; | |
43816ebc | 23549 | |
c6481205 | 23550 | attr->set_string_canonical (objfile->intern (demangled.get ())); |
95eb9e54 | 23551 | attr_name = attr->as_string (); |
53832f31 | 23552 | } |
67430cd0 | 23553 | |
2c830f54 TT |
23554 | /* Strip any leading namespaces/classes, keep only the |
23555 | base name. DW_AT_name for named DIEs does not | |
23556 | contain the prefixes. */ | |
23557 | const char *base = strrchr (attr_name, ':'); | |
23558 | if (base && base > attr_name && base[-1] == ':') | |
67430cd0 TT |
23559 | return &base[1]; |
23560 | else | |
2c830f54 | 23561 | return attr_name; |
53832f31 | 23562 | } |
907af001 UW |
23563 | break; |
23564 | ||
71c25dea | 23565 | default: |
907af001 UW |
23566 | break; |
23567 | } | |
23568 | ||
3b64bf15 | 23569 | if (!attr->canonical_string_p ()) |
c6481205 TT |
23570 | attr->set_string_canonical (dwarf2_canonicalize_name (attr_name, cu, |
23571 | objfile)); | |
2c830f54 | 23572 | return attr->as_string (); |
9219021c DC |
23573 | } |
23574 | ||
23575 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
23576 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
23577 | containing the return value on output. */ | |
9219021c DC |
23578 | |
23579 | static struct die_info * | |
f2f0e013 | 23580 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
23581 | { |
23582 | struct attribute *attr; | |
9219021c | 23583 | |
f2f0e013 | 23584 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
23585 | if (attr == NULL) |
23586 | return NULL; | |
23587 | ||
f2f0e013 | 23588 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
23589 | } |
23590 | ||
f9aca02d | 23591 | static void |
d97bc12b | 23592 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23593 | { |
23594 | unsigned int i; | |
23595 | ||
d97bc12b | 23596 | print_spaces (indent, f); |
9d8780f0 | 23597 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23598 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23599 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23600 | |
23601 | if (die->parent != NULL) | |
23602 | { | |
23603 | print_spaces (indent, f); | |
9d8780f0 SM |
23604 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23605 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23606 | } |
23607 | ||
23608 | print_spaces (indent, f); | |
23609 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23610 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23611 | |
d97bc12b DE |
23612 | print_spaces (indent, f); |
23613 | fprintf_unfiltered (f, " attributes:\n"); | |
23614 | ||
c906108c SS |
23615 | for (i = 0; i < die->num_attrs; ++i) |
23616 | { | |
d97bc12b DE |
23617 | print_spaces (indent, f); |
23618 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23619 | dwarf_attr_name (die->attrs[i].name), |
23620 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23621 | |
c906108c SS |
23622 | switch (die->attrs[i].form) |
23623 | { | |
c906108c | 23624 | case DW_FORM_addr: |
336d760d | 23625 | case DW_FORM_addrx: |
3019eac3 | 23626 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23627 | fprintf_unfiltered (f, "address: "); |
36d378cf | 23628 | fputs_filtered (hex_string (die->attrs[i].as_address ()), f); |
c906108c SS |
23629 | break; |
23630 | case DW_FORM_block2: | |
23631 | case DW_FORM_block4: | |
23632 | case DW_FORM_block: | |
23633 | case DW_FORM_block1: | |
56eb65bd | 23634 | fprintf_unfiltered (f, "block: size %s", |
9d2246fc | 23635 | pulongest (die->attrs[i].as_block ()->size)); |
c906108c | 23636 | break; |
2dc7f7b3 | 23637 | case DW_FORM_exprloc: |
56eb65bd | 23638 | fprintf_unfiltered (f, "expression: size %s", |
9d2246fc | 23639 | pulongest (die->attrs[i].as_block ()->size)); |
2dc7f7b3 | 23640 | break; |
0224619f JK |
23641 | case DW_FORM_data16: |
23642 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23643 | break; | |
4568ecf9 DE |
23644 | case DW_FORM_ref_addr: |
23645 | fprintf_unfiltered (f, "ref address: "); | |
529908cb | 23646 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
4568ecf9 | 23647 | break; |
36586728 TT |
23648 | case DW_FORM_GNU_ref_alt: |
23649 | fprintf_unfiltered (f, "alt ref address: "); | |
529908cb | 23650 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
36586728 | 23651 | break; |
10b3939b DJ |
23652 | case DW_FORM_ref1: |
23653 | case DW_FORM_ref2: | |
23654 | case DW_FORM_ref4: | |
4568ecf9 DE |
23655 | case DW_FORM_ref8: |
23656 | case DW_FORM_ref_udata: | |
d97bc12b | 23657 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
529908cb | 23658 | (long) (die->attrs[i].as_unsigned ())); |
10b3939b | 23659 | break; |
c906108c SS |
23660 | case DW_FORM_data1: |
23661 | case DW_FORM_data2: | |
23662 | case DW_FORM_data4: | |
ce5d95e1 | 23663 | case DW_FORM_data8: |
c906108c | 23664 | case DW_FORM_udata: |
43bbcdc2 | 23665 | fprintf_unfiltered (f, "constant: %s", |
529908cb | 23666 | pulongest (die->attrs[i].as_unsigned ())); |
c906108c | 23667 | break; |
2dc7f7b3 TT |
23668 | case DW_FORM_sec_offset: |
23669 | fprintf_unfiltered (f, "section offset: %s", | |
529908cb | 23670 | pulongest (die->attrs[i].as_unsigned ())); |
2dc7f7b3 | 23671 | break; |
55f1336d | 23672 | case DW_FORM_ref_sig8: |
ac9ec31b | 23673 | fprintf_unfiltered (f, "signature: %s", |
630ed6b9 | 23674 | hex_string (die->attrs[i].as_signature ())); |
348e048f | 23675 | break; |
c906108c | 23676 | case DW_FORM_string: |
4bdf3d34 | 23677 | case DW_FORM_strp: |
43988095 | 23678 | case DW_FORM_line_strp: |
cf532bd1 | 23679 | case DW_FORM_strx: |
3019eac3 | 23680 | case DW_FORM_GNU_str_index: |
36586728 | 23681 | case DW_FORM_GNU_strp_alt: |
8285870a | 23682 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c6481205 TT |
23683 | die->attrs[i].as_string () |
23684 | ? die->attrs[i].as_string () : "", | |
23685 | die->attrs[i].canonical_string_p () ? "is" : "not"); | |
c906108c SS |
23686 | break; |
23687 | case DW_FORM_flag: | |
c45bc3f8 | 23688 | if (die->attrs[i].as_boolean ()) |
d97bc12b | 23689 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23690 | else |
d97bc12b | 23691 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23692 | break; |
2dc7f7b3 TT |
23693 | case DW_FORM_flag_present: |
23694 | fprintf_unfiltered (f, "flag: TRUE"); | |
23695 | break; | |
a8329558 | 23696 | case DW_FORM_indirect: |
0963b4bd MS |
23697 | /* The reader will have reduced the indirect form to |
23698 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 23699 | fprintf_unfiltered (f, |
3e43a32a | 23700 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 23701 | break; |
1bc397c5 | 23702 | case DW_FORM_sdata: |
663c44ac JK |
23703 | case DW_FORM_implicit_const: |
23704 | fprintf_unfiltered (f, "constant: %s", | |
1bc397c5 | 23705 | plongest (die->attrs[i].as_signed ())); |
663c44ac | 23706 | break; |
c906108c | 23707 | default: |
d97bc12b | 23708 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23709 | die->attrs[i].form); |
d97bc12b | 23710 | break; |
c906108c | 23711 | } |
d97bc12b | 23712 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23713 | } |
23714 | } | |
23715 | ||
f9aca02d | 23716 | static void |
d97bc12b | 23717 | dump_die_for_error (struct die_info *die) |
c906108c | 23718 | { |
d97bc12b DE |
23719 | dump_die_shallow (gdb_stderr, 0, die); |
23720 | } | |
23721 | ||
23722 | static void | |
23723 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23724 | { | |
23725 | int indent = level * 4; | |
23726 | ||
23727 | gdb_assert (die != NULL); | |
23728 | ||
23729 | if (level >= max_level) | |
23730 | return; | |
23731 | ||
23732 | dump_die_shallow (f, indent, die); | |
23733 | ||
23734 | if (die->child != NULL) | |
c906108c | 23735 | { |
d97bc12b DE |
23736 | print_spaces (indent, f); |
23737 | fprintf_unfiltered (f, " Children:"); | |
23738 | if (level + 1 < max_level) | |
23739 | { | |
23740 | fprintf_unfiltered (f, "\n"); | |
23741 | dump_die_1 (f, level + 1, max_level, die->child); | |
23742 | } | |
23743 | else | |
23744 | { | |
3e43a32a MS |
23745 | fprintf_unfiltered (f, |
23746 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23747 | } |
23748 | } | |
23749 | ||
23750 | if (die->sibling != NULL && level > 0) | |
23751 | { | |
23752 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23753 | } |
23754 | } | |
23755 | ||
d97bc12b DE |
23756 | /* This is called from the pdie macro in gdbinit.in. |
23757 | It's not static so gcc will keep a copy callable from gdb. */ | |
23758 | ||
23759 | void | |
23760 | dump_die (struct die_info *die, int max_level) | |
23761 | { | |
23762 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23763 | } | |
23764 | ||
f9aca02d | 23765 | static void |
51545339 | 23766 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23767 | { |
51545339 | 23768 | void **slot; |
c906108c | 23769 | |
9c541725 PA |
23770 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23771 | to_underlying (die->sect_off), | |
b64f50a1 | 23772 | INSERT); |
51545339 DJ |
23773 | |
23774 | *slot = die; | |
c906108c SS |
23775 | } |
23776 | ||
348e048f DE |
23777 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23778 | On entry *REF_CU is the CU of SRC_DIE. | |
23779 | On exit *REF_CU is the CU of the result. */ | |
23780 | ||
23781 | static struct die_info * | |
ff39bb5e | 23782 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23783 | struct dwarf2_cu **ref_cu) |
23784 | { | |
23785 | struct die_info *die; | |
23786 | ||
cd6c91b4 | 23787 | if (attr->form_is_ref ()) |
348e048f | 23788 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23789 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23790 | die = follow_die_sig (src_die, attr, ref_cu); |
23791 | else | |
23792 | { | |
23793 | dump_die_for_error (src_die); | |
23794 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 23795 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
23796 | } |
23797 | ||
23798 | return die; | |
03dd20cc DJ |
23799 | } |
23800 | ||
5c631832 | 23801 | /* Follow reference OFFSET. |
673bfd45 DE |
23802 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23803 | On exit *REF_CU is the CU of the result. | |
23804 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23805 | |
f9aca02d | 23806 | static struct die_info * |
9c541725 | 23807 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23808 | struct dwarf2_cu **ref_cu) |
c906108c | 23809 | { |
10b3939b | 23810 | struct die_info temp_die; |
f2f0e013 | 23811 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 23812 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 23813 | |
348e048f DE |
23814 | gdb_assert (cu->per_cu != NULL); |
23815 | ||
98bfdba5 PA |
23816 | target_cu = cu; |
23817 | ||
17e593e9 SM |
23818 | dwarf_read_debug_printf_v ("source CU offset: %s, target offset: %s, " |
23819 | "source CU contains target offset: %d", | |
23820 | sect_offset_str (cu->per_cu->sect_off), | |
23821 | sect_offset_str (sect_off), | |
23822 | cu->header.offset_in_cu_p (sect_off)); | |
23823 | ||
3019eac3 | 23824 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23825 | { |
23826 | /* .debug_types CUs cannot reference anything outside their CU. | |
23827 | If they need to, they have to reference a signatured type via | |
55f1336d | 23828 | DW_FORM_ref_sig8. */ |
4057dfde | 23829 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 23830 | return NULL; |
348e048f | 23831 | } |
36586728 | 23832 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 23833 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
23834 | { |
23835 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23836 | |
9c541725 | 23837 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 23838 | per_objfile); |
03dd20cc | 23839 | |
17e593e9 SM |
23840 | dwarf_read_debug_printf_v ("target CU offset: %s, " |
23841 | "target CU DIEs loaded: %d", | |
23842 | sect_offset_str (per_cu->sect_off), | |
23843 | per_objfile->get_cu (per_cu) != nullptr); | |
23844 | ||
616c069a SM |
23845 | /* If necessary, add it to the queue and load its DIEs. |
23846 | ||
23847 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, | |
23848 | it doesn't mean they are currently loaded. Since we require them | |
23849 | to be loaded, we must check for ourselves. */ | |
23850 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language) | |
23851 | || per_objfile->get_cu (per_cu) == nullptr) | |
4a636814 SM |
23852 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
23853 | false, cu->language); | |
03dd20cc | 23854 | |
976ca316 | 23855 | target_cu = per_objfile->get_cu (per_cu); |
616c069a | 23856 | gdb_assert (target_cu != nullptr); |
10b3939b | 23857 | } |
98bfdba5 PA |
23858 | else if (cu->dies == NULL) |
23859 | { | |
23860 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 | 23861 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
4a636814 SM |
23862 | load_full_comp_unit (cu->per_cu, per_objfile, cu, false, |
23863 | language_minimal); | |
98bfdba5 | 23864 | } |
c906108c | 23865 | |
f2f0e013 | 23866 | *ref_cu = target_cu; |
9c541725 | 23867 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
23868 | |
23869 | if (target_cu != cu) | |
23870 | target_cu->ancestor = cu; | |
23871 | ||
9a3c8263 | 23872 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23873 | &temp_die, |
23874 | to_underlying (sect_off)); | |
5c631832 | 23875 | } |
10b3939b | 23876 | |
5c631832 JK |
23877 | /* Follow reference attribute ATTR of SRC_DIE. |
23878 | On entry *REF_CU is the CU of SRC_DIE. | |
23879 | On exit *REF_CU is the CU of the result. */ | |
23880 | ||
23881 | static struct die_info * | |
ff39bb5e | 23882 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23883 | struct dwarf2_cu **ref_cu) |
23884 | { | |
0826b30a | 23885 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
23886 | struct dwarf2_cu *cu = *ref_cu; |
23887 | struct die_info *die; | |
23888 | ||
9c541725 | 23889 | die = follow_die_offset (sect_off, |
36586728 TT |
23890 | (attr->form == DW_FORM_GNU_ref_alt |
23891 | || cu->per_cu->is_dwz), | |
23892 | ref_cu); | |
5c631832 | 23893 | if (!die) |
9d8780f0 SM |
23894 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23895 | "at %s [in module %s]"), | |
23896 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23897 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 23898 | |
5c631832 JK |
23899 | return die; |
23900 | } | |
23901 | ||
d4c9a4f8 | 23902 | /* See read.h. */ |
5c631832 JK |
23903 | |
23904 | struct dwarf2_locexpr_baton | |
9c541725 | 23905 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 23906 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23907 | dwarf2_per_objfile *per_objfile, |
041d9819 SM |
23908 | gdb::function_view<CORE_ADDR ()> get_frame_pc, |
23909 | bool resolve_abstract_p) | |
5c631832 | 23910 | { |
5c631832 JK |
23911 | struct die_info *die; |
23912 | struct attribute *attr; | |
23913 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 23914 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 23915 | |
976ca316 | 23916 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 23917 | if (cu == nullptr) |
976ca316 | 23918 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
23919 | |
23920 | if (cu == nullptr) | |
cc12ce38 DE |
23921 | { |
23922 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23923 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23924 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23925 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23926 | } |
918dd910 | 23927 | |
9c541725 | 23928 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23929 | if (!die) |
9d8780f0 SM |
23930 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23931 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23932 | |
23933 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23934 | if (!attr && resolve_abstract_p |
976ca316 SM |
23935 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
23936 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 | 23937 | { |
041d9819 | 23938 | CORE_ADDR pc = get_frame_pc (); |
b3b3bada | 23939 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 23940 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 23941 | |
3360b6e7 | 23942 | for (const auto &cand_off |
976ca316 | 23943 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 23944 | { |
3360b6e7 TV |
23945 | struct dwarf2_cu *cand_cu = cu; |
23946 | struct die_info *cand | |
23947 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23948 | if (!cand | |
23949 | || !cand->parent | |
e4a62c65 TV |
23950 | || cand->parent->tag != DW_TAG_subprogram) |
23951 | continue; | |
23952 | ||
23953 | CORE_ADDR pc_low, pc_high; | |
23954 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23955 | if (pc_low == ((CORE_ADDR) -1)) |
23956 | continue; | |
23957 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23958 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23959 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23960 | continue; |
23961 | ||
23962 | die = cand; | |
23963 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23964 | break; | |
23965 | } | |
23966 | } | |
23967 | ||
5c631832 JK |
23968 | if (!attr) |
23969 | { | |
e103e986 JK |
23970 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23971 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23972 | |
e103e986 | 23973 | retval.data = NULL; |
5c631832 JK |
23974 | retval.size = 0; |
23975 | } | |
cd6c91b4 | 23976 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23977 | { |
23978 | struct dwarf2_loclist_baton loclist_baton; | |
041d9819 | 23979 | CORE_ADDR pc = get_frame_pc (); |
8cf6f0b1 TT |
23980 | size_t size; |
23981 | ||
23982 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23983 | ||
23984 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23985 | &size, pc); | |
23986 | retval.size = size; | |
23987 | } | |
5c631832 JK |
23988 | else |
23989 | { | |
4fc6c0d5 | 23990 | if (!attr->form_is_block ()) |
9d8780f0 | 23991 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23992 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23993 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 | 23994 | |
9d2246fc TT |
23995 | struct dwarf_block *block = attr->as_block (); |
23996 | retval.data = block->data; | |
23997 | retval.size = block->size; | |
5c631832 | 23998 | } |
976ca316 | 23999 | retval.per_objfile = per_objfile; |
5c631832 | 24000 | retval.per_cu = cu->per_cu; |
918dd910 | 24001 | |
976ca316 | 24002 | per_objfile->age_comp_units (); |
918dd910 | 24003 | |
5c631832 | 24004 | return retval; |
348e048f DE |
24005 | } |
24006 | ||
d4c9a4f8 | 24007 | /* See read.h. */ |
8b9737bf TT |
24008 | |
24009 | struct dwarf2_locexpr_baton | |
24010 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 24011 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 24012 | dwarf2_per_objfile *per_objfile, |
041d9819 | 24013 | gdb::function_view<CORE_ADDR ()> get_frame_pc) |
8b9737bf | 24014 | { |
9c541725 | 24015 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 24016 | |
14095eb3 | 24017 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
041d9819 | 24018 | get_frame_pc); |
8b9737bf TT |
24019 | } |
24020 | ||
b6807d98 TT |
24021 | /* Write a constant of a given type as target-ordered bytes into |
24022 | OBSTACK. */ | |
24023 | ||
24024 | static const gdb_byte * | |
24025 | write_constant_as_bytes (struct obstack *obstack, | |
24026 | enum bfd_endian byte_order, | |
24027 | struct type *type, | |
24028 | ULONGEST value, | |
24029 | LONGEST *len) | |
24030 | { | |
24031 | gdb_byte *result; | |
24032 | ||
24033 | *len = TYPE_LENGTH (type); | |
224c3ddb | 24034 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
24035 | store_unsigned_integer (result, *len, byte_order, value); |
24036 | ||
24037 | return result; | |
24038 | } | |
24039 | ||
d4c9a4f8 | 24040 | /* See read.h. */ |
b6807d98 TT |
24041 | |
24042 | const gdb_byte * | |
9c541725 | 24043 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 24044 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 24045 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 24046 | obstack *obstack, |
b6807d98 TT |
24047 | LONGEST *len) |
24048 | { | |
b6807d98 TT |
24049 | struct die_info *die; |
24050 | struct attribute *attr; | |
24051 | const gdb_byte *result = NULL; | |
24052 | struct type *type; | |
24053 | LONGEST value; | |
24054 | enum bfd_endian byte_order; | |
14095eb3 | 24055 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 24056 | |
7188ed02 | 24057 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
24058 | if (cu == nullptr) |
24059 | cu = load_cu (per_cu, per_objfile, false); | |
24060 | ||
24061 | if (cu == nullptr) | |
cc12ce38 DE |
24062 | { |
24063 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
24064 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
24065 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
24066 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 24067 | } |
b6807d98 | 24068 | |
9c541725 | 24069 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 24070 | if (!die) |
9d8780f0 SM |
24071 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
24072 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
24073 | |
24074 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
24075 | if (attr == NULL) | |
24076 | return NULL; | |
24077 | ||
e3b94546 | 24078 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
24079 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
24080 | ||
24081 | switch (attr->form) | |
24082 | { | |
24083 | case DW_FORM_addr: | |
336d760d | 24084 | case DW_FORM_addrx: |
b6807d98 TT |
24085 | case DW_FORM_GNU_addr_index: |
24086 | { | |
24087 | gdb_byte *tem; | |
24088 | ||
24089 | *len = cu->header.addr_size; | |
224c3ddb | 24090 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
36d378cf | 24091 | store_unsigned_integer (tem, *len, byte_order, attr->as_address ()); |
b6807d98 TT |
24092 | result = tem; |
24093 | } | |
24094 | break; | |
24095 | case DW_FORM_string: | |
24096 | case DW_FORM_strp: | |
cf532bd1 | 24097 | case DW_FORM_strx: |
b6807d98 TT |
24098 | case DW_FORM_GNU_str_index: |
24099 | case DW_FORM_GNU_strp_alt: | |
c6481205 | 24100 | /* The string is already allocated on the objfile obstack, point |
b6807d98 | 24101 | directly to it. */ |
2c830f54 TT |
24102 | { |
24103 | const char *attr_name = attr->as_string (); | |
24104 | result = (const gdb_byte *) attr_name; | |
24105 | *len = strlen (attr_name); | |
24106 | } | |
b6807d98 TT |
24107 | break; |
24108 | case DW_FORM_block1: | |
24109 | case DW_FORM_block2: | |
24110 | case DW_FORM_block4: | |
24111 | case DW_FORM_block: | |
24112 | case DW_FORM_exprloc: | |
0224619f | 24113 | case DW_FORM_data16: |
9d2246fc TT |
24114 | { |
24115 | struct dwarf_block *block = attr->as_block (); | |
24116 | result = block->data; | |
24117 | *len = block->size; | |
24118 | } | |
b6807d98 TT |
24119 | break; |
24120 | ||
24121 | /* The DW_AT_const_value attributes are supposed to carry the | |
24122 | symbol's value "represented as it would be on the target | |
24123 | architecture." By the time we get here, it's already been | |
24124 | converted to host endianness, so we just need to sign- or | |
24125 | zero-extend it as appropriate. */ | |
24126 | case DW_FORM_data1: | |
24127 | type = die_type (die, cu); | |
24128 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
24129 | if (result == NULL) | |
24130 | result = write_constant_as_bytes (obstack, byte_order, | |
24131 | type, value, len); | |
24132 | break; | |
24133 | case DW_FORM_data2: | |
24134 | type = die_type (die, cu); | |
24135 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
24136 | if (result == NULL) | |
24137 | result = write_constant_as_bytes (obstack, byte_order, | |
24138 | type, value, len); | |
24139 | break; | |
24140 | case DW_FORM_data4: | |
24141 | type = die_type (die, cu); | |
24142 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
24143 | if (result == NULL) | |
24144 | result = write_constant_as_bytes (obstack, byte_order, | |
24145 | type, value, len); | |
24146 | break; | |
24147 | case DW_FORM_data8: | |
24148 | type = die_type (die, cu); | |
24149 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
24150 | if (result == NULL) | |
24151 | result = write_constant_as_bytes (obstack, byte_order, | |
24152 | type, value, len); | |
24153 | break; | |
24154 | ||
24155 | case DW_FORM_sdata: | |
663c44ac | 24156 | case DW_FORM_implicit_const: |
b6807d98 TT |
24157 | type = die_type (die, cu); |
24158 | result = write_constant_as_bytes (obstack, byte_order, | |
1bc397c5 | 24159 | type, attr->as_signed (), len); |
b6807d98 TT |
24160 | break; |
24161 | ||
24162 | case DW_FORM_udata: | |
24163 | type = die_type (die, cu); | |
24164 | result = write_constant_as_bytes (obstack, byte_order, | |
529908cb | 24165 | type, attr->as_unsigned (), len); |
b6807d98 TT |
24166 | break; |
24167 | ||
24168 | default: | |
b98664d3 | 24169 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
24170 | dwarf_form_name (attr->form)); |
24171 | break; | |
24172 | } | |
24173 | ||
24174 | return result; | |
24175 | } | |
24176 | ||
d4c9a4f8 | 24177 | /* See read.h. */ |
7942e96e AA |
24178 | |
24179 | struct type * | |
9c541725 | 24180 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
24181 | dwarf2_per_cu_data *per_cu, |
24182 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 24183 | { |
7942e96e AA |
24184 | struct die_info *die; |
24185 | ||
7188ed02 | 24186 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
24187 | if (cu == nullptr) |
24188 | cu = load_cu (per_cu, per_objfile, false); | |
24189 | ||
24190 | if (cu == nullptr) | |
24191 | return nullptr; | |
7942e96e | 24192 | |
9c541725 | 24193 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
24194 | if (!die) |
24195 | return NULL; | |
24196 | ||
24197 | return die_type (die, cu); | |
24198 | } | |
24199 | ||
8cb5117c | 24200 | /* See read.h. */ |
8a9b8146 TT |
24201 | |
24202 | struct type * | |
b64f50a1 | 24203 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
24204 | dwarf2_per_cu_data *per_cu, |
24205 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 24206 | { |
9c541725 | 24207 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 24208 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
24209 | } |
24210 | ||
ac9ec31b | 24211 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 24212 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
24213 | On exit *REF_CU is the CU of the result. |
24214 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
24215 | |
24216 | static struct die_info * | |
ac9ec31b DE |
24217 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
24218 | struct dwarf2_cu **ref_cu) | |
348e048f | 24219 | { |
348e048f | 24220 | struct die_info temp_die; |
c24bdb02 | 24221 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 24222 | struct die_info *die; |
976ca316 | 24223 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 24224 | |
348e048f | 24225 | |
ac9ec31b DE |
24226 | /* While it might be nice to assert sig_type->type == NULL here, |
24227 | we can get here for DW_AT_imported_declaration where we need | |
24228 | the DIE not the type. */ | |
348e048f | 24229 | |
616c069a | 24230 | /* If necessary, add it to the queue and load its DIEs. |
348e048f | 24231 | |
616c069a SM |
24232 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, |
24233 | it doesn't mean they are currently loaded. Since we require them | |
24234 | to be loaded, we must check for ourselves. */ | |
976ca316 | 24235 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, per_objfile, |
616c069a SM |
24236 | language_minimal) |
24237 | || per_objfile->get_cu (&sig_type->per_cu) == nullptr) | |
976ca316 | 24238 | read_signatured_type (sig_type, per_objfile); |
348e048f | 24239 | |
976ca316 | 24240 | sig_cu = per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 24241 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
24242 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
24243 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 24244 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 24245 | to_underlying (temp_die.sect_off)); |
348e048f DE |
24246 | if (die) |
24247 | { | |
796a7ff8 DE |
24248 | /* For .gdb_index version 7 keep track of included TUs. |
24249 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
24250 | if (per_objfile->per_bfd->index_table != NULL |
24251 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 24252 | { |
ae640021 | 24253 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
24254 | } |
24255 | ||
348e048f | 24256 | *ref_cu = sig_cu; |
c24bdb02 KS |
24257 | if (sig_cu != cu) |
24258 | sig_cu->ancestor = cu; | |
24259 | ||
348e048f DE |
24260 | return die; |
24261 | } | |
24262 | ||
ac9ec31b DE |
24263 | return NULL; |
24264 | } | |
24265 | ||
24266 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
24267 | On entry *REF_CU is the CU of SRC_DIE. | |
24268 | On exit *REF_CU is the CU of the result. | |
24269 | The result is the DIE of the type. | |
24270 | If the referenced type cannot be found an error is thrown. */ | |
24271 | ||
24272 | static struct die_info * | |
ff39bb5e | 24273 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
24274 | struct dwarf2_cu **ref_cu) |
24275 | { | |
630ed6b9 | 24276 | ULONGEST signature = attr->as_signature (); |
ac9ec31b DE |
24277 | struct signatured_type *sig_type; |
24278 | struct die_info *die; | |
24279 | ||
24280 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
24281 | ||
a2ce51a0 | 24282 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
24283 | /* sig_type will be NULL if the signatured type is missing from |
24284 | the debug info. */ | |
24285 | if (sig_type == NULL) | |
24286 | { | |
24287 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
dda83cd7 SM |
24288 | " from DIE at %s [in module %s]"), |
24289 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 24290 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
24291 | } |
24292 | ||
24293 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
24294 | if (die == NULL) | |
24295 | { | |
24296 | dump_die_for_error (src_die); | |
24297 | error (_("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 (src_die->sect_off), | |
5e22e966 | 24300 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
24301 | } |
24302 | ||
24303 | return die; | |
24304 | } | |
24305 | ||
24306 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
24307 | reading in and processing the type unit if necessary. */ | |
24308 | ||
24309 | static struct type * | |
24310 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
24311 | struct dwarf2_cu *cu) | |
24312 | { | |
976ca316 | 24313 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
24314 | struct signatured_type *sig_type; |
24315 | struct dwarf2_cu *type_cu; | |
24316 | struct die_info *type_die; | |
24317 | struct type *type; | |
24318 | ||
a2ce51a0 | 24319 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
24320 | /* sig_type will be NULL if the signatured type is missing from |
24321 | the debug info. */ | |
24322 | if (sig_type == NULL) | |
24323 | { | |
b98664d3 | 24324 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
24325 | " from DIE at %s [in module %s]"), |
24326 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24327 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24328 | return build_error_marker_type (cu, die); |
24329 | } | |
24330 | ||
24331 | /* If we already know the type we're done. */ | |
976ca316 | 24332 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
24333 | if (type != nullptr) |
24334 | return type; | |
ac9ec31b DE |
24335 | |
24336 | type_cu = cu; | |
24337 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
24338 | if (type_die != NULL) | |
24339 | { | |
24340 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
24341 | is created. This is important, for example, because for c++ classes | |
24342 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
24343 | type = read_type_die (type_die, type_cu); | |
24344 | if (type == NULL) | |
24345 | { | |
b98664d3 | 24346 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
24347 | " referenced from DIE at %s [in module %s]"), |
24348 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24349 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24350 | type = build_error_marker_type (cu, die); |
24351 | } | |
24352 | } | |
24353 | else | |
24354 | { | |
b98664d3 | 24355 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
24356 | " from DIE at %s [in module %s]"), |
24357 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24358 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24359 | type = build_error_marker_type (cu, die); |
24360 | } | |
e286671b | 24361 | |
976ca316 | 24362 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
24363 | |
24364 | return type; | |
24365 | } | |
24366 | ||
24367 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
24368 | reading in and processing the type unit if necessary. */ | |
24369 | ||
24370 | static struct type * | |
ff39bb5e | 24371 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 24372 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
24373 | { |
24374 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 24375 | if (attr->form_is_ref ()) |
ac9ec31b DE |
24376 | { |
24377 | struct dwarf2_cu *type_cu = cu; | |
24378 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
24379 | ||
24380 | return read_type_die (type_die, type_cu); | |
24381 | } | |
24382 | else if (attr->form == DW_FORM_ref_sig8) | |
24383 | { | |
630ed6b9 | 24384 | return get_signatured_type (die, attr->as_signature (), cu); |
ac9ec31b DE |
24385 | } |
24386 | else | |
24387 | { | |
976ca316 | 24388 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24389 | |
b98664d3 | 24390 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
24391 | " at %s [in module %s]"), |
24392 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 24393 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24394 | return build_error_marker_type (cu, die); |
24395 | } | |
348e048f DE |
24396 | } |
24397 | ||
e5fe5e75 | 24398 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
24399 | |
24400 | static void | |
ab432490 SM |
24401 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
24402 | dwarf2_per_objfile *per_objfile) | |
348e048f | 24403 | { |
52dc124a | 24404 | struct signatured_type *sig_type; |
348e048f | 24405 | |
f4dc4d17 | 24406 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 24407 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 24408 | |
6721b2ec DE |
24409 | /* We have the per_cu, but we need the signatured_type. |
24410 | Fortunately this is an easy translation. */ | |
24411 | gdb_assert (per_cu->is_debug_types); | |
24412 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 24413 | |
7188ed02 | 24414 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24415 | |
ab432490 | 24416 | read_signatured_type (sig_type, per_objfile); |
348e048f | 24417 | |
7188ed02 | 24418 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
24419 | } |
24420 | ||
3019eac3 DE |
24421 | /* Read in a signatured type and build its CU and DIEs. |
24422 | If the type is a stub for the real type in a DWO file, | |
24423 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
24424 | |
24425 | static void | |
ab432490 SM |
24426 | read_signatured_type (signatured_type *sig_type, |
24427 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
24428 | { |
24429 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 24430 | |
3019eac3 | 24431 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 24432 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24433 | |
2e671100 | 24434 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
24435 | |
24436 | if (!reader.dummy_p) | |
24437 | { | |
24438 | struct dwarf2_cu *cu = reader.cu; | |
24439 | const gdb_byte *info_ptr = reader.info_ptr; | |
24440 | ||
24441 | gdb_assert (cu->die_hash == NULL); | |
24442 | cu->die_hash = | |
24443 | htab_create_alloc_ex (cu->header.length / 12, | |
24444 | die_hash, | |
24445 | die_eq, | |
24446 | NULL, | |
24447 | &cu->comp_unit_obstack, | |
24448 | hashtab_obstack_allocate, | |
24449 | dummy_obstack_deallocate); | |
24450 | ||
3e225074 | 24451 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
24452 | reader.comp_unit_die->child |
24453 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
24454 | reader.comp_unit_die); | |
24455 | cu->dies = reader.comp_unit_die; | |
24456 | /* comp_unit_die is not stored in die_hash, no need. */ | |
24457 | ||
24458 | /* We try not to read any attributes in this function, because | |
24459 | not all CUs needed for references have been loaded yet, and | |
24460 | symbol table processing isn't initialized. But we have to | |
24461 | set the CU language, or we won't be able to build types | |
24462 | correctly. Similarly, if we do not read the producer, we can | |
24463 | not apply producer-specific interpretation. */ | |
24464 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
24465 | |
24466 | reader.keep (); | |
c0ab21c2 TT |
24467 | } |
24468 | ||
7ee85ab1 | 24469 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
24470 | } |
24471 | ||
c906108c SS |
24472 | /* Decode simple location descriptions. |
24473 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
24474 | the location and return the value. If COMPUTED is non-null, it is |
24475 | set to true to indicate that decoding was successful, and false | |
24476 | otherwise. If COMPUTED is null, then this function may emit a | |
24477 | complaint. */ | |
c906108c SS |
24478 | |
24479 | static CORE_ADDR | |
7d79de9a | 24480 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 24481 | { |
5e22e966 | 24482 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
24483 | size_t i; |
24484 | size_t size = blk->size; | |
d521ce57 | 24485 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
24486 | CORE_ADDR stack[64]; |
24487 | int stacki; | |
24488 | unsigned int bytes_read, unsnd; | |
24489 | gdb_byte op; | |
c906108c | 24490 | |
7d79de9a TT |
24491 | if (computed != nullptr) |
24492 | *computed = false; | |
24493 | ||
21ae7a4d JK |
24494 | i = 0; |
24495 | stacki = 0; | |
24496 | stack[stacki] = 0; | |
24497 | stack[++stacki] = 0; | |
24498 | ||
24499 | while (i < size) | |
24500 | { | |
24501 | op = data[i++]; | |
24502 | switch (op) | |
24503 | { | |
24504 | case DW_OP_lit0: | |
24505 | case DW_OP_lit1: | |
24506 | case DW_OP_lit2: | |
24507 | case DW_OP_lit3: | |
24508 | case DW_OP_lit4: | |
24509 | case DW_OP_lit5: | |
24510 | case DW_OP_lit6: | |
24511 | case DW_OP_lit7: | |
24512 | case DW_OP_lit8: | |
24513 | case DW_OP_lit9: | |
24514 | case DW_OP_lit10: | |
24515 | case DW_OP_lit11: | |
24516 | case DW_OP_lit12: | |
24517 | case DW_OP_lit13: | |
24518 | case DW_OP_lit14: | |
24519 | case DW_OP_lit15: | |
24520 | case DW_OP_lit16: | |
24521 | case DW_OP_lit17: | |
24522 | case DW_OP_lit18: | |
24523 | case DW_OP_lit19: | |
24524 | case DW_OP_lit20: | |
24525 | case DW_OP_lit21: | |
24526 | case DW_OP_lit22: | |
24527 | case DW_OP_lit23: | |
24528 | case DW_OP_lit24: | |
24529 | case DW_OP_lit25: | |
24530 | case DW_OP_lit26: | |
24531 | case DW_OP_lit27: | |
24532 | case DW_OP_lit28: | |
24533 | case DW_OP_lit29: | |
24534 | case DW_OP_lit30: | |
24535 | case DW_OP_lit31: | |
24536 | stack[++stacki] = op - DW_OP_lit0; | |
24537 | break; | |
f1bea926 | 24538 | |
21ae7a4d JK |
24539 | case DW_OP_reg0: |
24540 | case DW_OP_reg1: | |
24541 | case DW_OP_reg2: | |
24542 | case DW_OP_reg3: | |
24543 | case DW_OP_reg4: | |
24544 | case DW_OP_reg5: | |
24545 | case DW_OP_reg6: | |
24546 | case DW_OP_reg7: | |
24547 | case DW_OP_reg8: | |
24548 | case DW_OP_reg9: | |
24549 | case DW_OP_reg10: | |
24550 | case DW_OP_reg11: | |
24551 | case DW_OP_reg12: | |
24552 | case DW_OP_reg13: | |
24553 | case DW_OP_reg14: | |
24554 | case DW_OP_reg15: | |
24555 | case DW_OP_reg16: | |
24556 | case DW_OP_reg17: | |
24557 | case DW_OP_reg18: | |
24558 | case DW_OP_reg19: | |
24559 | case DW_OP_reg20: | |
24560 | case DW_OP_reg21: | |
24561 | case DW_OP_reg22: | |
24562 | case DW_OP_reg23: | |
24563 | case DW_OP_reg24: | |
24564 | case DW_OP_reg25: | |
24565 | case DW_OP_reg26: | |
24566 | case DW_OP_reg27: | |
24567 | case DW_OP_reg28: | |
24568 | case DW_OP_reg29: | |
24569 | case DW_OP_reg30: | |
24570 | case DW_OP_reg31: | |
24571 | stack[++stacki] = op - DW_OP_reg0; | |
24572 | if (i < size) | |
7d79de9a TT |
24573 | { |
24574 | if (computed == nullptr) | |
24575 | dwarf2_complex_location_expr_complaint (); | |
24576 | else | |
24577 | return 0; | |
24578 | } | |
21ae7a4d | 24579 | break; |
c906108c | 24580 | |
21ae7a4d JK |
24581 | case DW_OP_regx: |
24582 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24583 | i += bytes_read; | |
24584 | stack[++stacki] = unsnd; | |
24585 | if (i < size) | |
7d79de9a TT |
24586 | { |
24587 | if (computed == nullptr) | |
24588 | dwarf2_complex_location_expr_complaint (); | |
24589 | else | |
24590 | return 0; | |
24591 | } | |
21ae7a4d | 24592 | break; |
c906108c | 24593 | |
21ae7a4d | 24594 | case DW_OP_addr: |
c8a7a66f TT |
24595 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
24596 | &bytes_read); | |
21ae7a4d JK |
24597 | i += bytes_read; |
24598 | break; | |
d53d4ac5 | 24599 | |
21ae7a4d JK |
24600 | case DW_OP_const1u: |
24601 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24602 | i += 1; | |
24603 | break; | |
24604 | ||
24605 | case DW_OP_const1s: | |
24606 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24607 | i += 1; | |
24608 | break; | |
24609 | ||
24610 | case DW_OP_const2u: | |
24611 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24612 | i += 2; | |
24613 | break; | |
24614 | ||
24615 | case DW_OP_const2s: | |
24616 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24617 | i += 2; | |
24618 | break; | |
d53d4ac5 | 24619 | |
21ae7a4d JK |
24620 | case DW_OP_const4u: |
24621 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24622 | i += 4; | |
24623 | break; | |
24624 | ||
24625 | case DW_OP_const4s: | |
24626 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24627 | i += 4; | |
24628 | break; | |
24629 | ||
585861ea JK |
24630 | case DW_OP_const8u: |
24631 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24632 | i += 8; | |
24633 | break; | |
24634 | ||
21ae7a4d JK |
24635 | case DW_OP_constu: |
24636 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24637 | &bytes_read); | |
24638 | i += bytes_read; | |
24639 | break; | |
24640 | ||
24641 | case DW_OP_consts: | |
24642 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24643 | i += bytes_read; | |
24644 | break; | |
24645 | ||
24646 | case DW_OP_dup: | |
24647 | stack[stacki + 1] = stack[stacki]; | |
24648 | stacki++; | |
24649 | break; | |
24650 | ||
24651 | case DW_OP_plus: | |
24652 | stack[stacki - 1] += stack[stacki]; | |
24653 | stacki--; | |
24654 | break; | |
24655 | ||
24656 | case DW_OP_plus_uconst: | |
24657 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24658 | &bytes_read); | |
24659 | i += bytes_read; | |
24660 | break; | |
24661 | ||
24662 | case DW_OP_minus: | |
24663 | stack[stacki - 1] -= stack[stacki]; | |
24664 | stacki--; | |
24665 | break; | |
24666 | ||
24667 | case DW_OP_deref: | |
24668 | /* If we're not the last op, then we definitely can't encode | |
24669 | this using GDB's address_class enum. This is valid for partial | |
24670 | global symbols, although the variable's address will be bogus | |
24671 | in the psymtab. */ | |
24672 | if (i < size) | |
7d79de9a TT |
24673 | { |
24674 | if (computed == nullptr) | |
24675 | dwarf2_complex_location_expr_complaint (); | |
24676 | else | |
24677 | return 0; | |
24678 | } | |
21ae7a4d JK |
24679 | break; |
24680 | ||
dda83cd7 | 24681 | case DW_OP_GNU_push_tls_address: |
4aa4e28b | 24682 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24683 | /* The top of the stack has the offset from the beginning |
24684 | of the thread control block at which the variable is located. */ | |
24685 | /* Nothing should follow this operator, so the top of stack would | |
24686 | be returned. */ | |
24687 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24688 | address will be bogus in the psymtab. Make it always at least |
24689 | non-zero to not look as a variable garbage collected by linker | |
24690 | which have DW_OP_addr 0. */ | |
21ae7a4d | 24691 | if (i < size) |
7d79de9a TT |
24692 | { |
24693 | if (computed == nullptr) | |
24694 | dwarf2_complex_location_expr_complaint (); | |
24695 | else | |
24696 | return 0; | |
24697 | } | |
585861ea | 24698 | stack[stacki]++; |
dda83cd7 | 24699 | break; |
21ae7a4d JK |
24700 | |
24701 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
24702 | if (computed != nullptr) |
24703 | return 0; | |
21ae7a4d JK |
24704 | break; |
24705 | ||
336d760d | 24706 | case DW_OP_addrx: |
3019eac3 | 24707 | case DW_OP_GNU_addr_index: |
49f6c839 | 24708 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24709 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24710 | &bytes_read); | |
24711 | i += bytes_read; | |
24712 | break; | |
24713 | ||
21ae7a4d | 24714 | default: |
7d79de9a TT |
24715 | if (computed == nullptr) |
24716 | { | |
24717 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 24718 | |
7d79de9a TT |
24719 | if (name) |
24720 | complaint (_("unsupported stack op: '%s'"), | |
24721 | name); | |
24722 | else | |
24723 | complaint (_("unsupported stack op: '%02x'"), | |
24724 | op); | |
24725 | } | |
21ae7a4d JK |
24726 | |
24727 | return (stack[stacki]); | |
d53d4ac5 | 24728 | } |
3c6e0cb3 | 24729 | |
21ae7a4d | 24730 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
dda83cd7 | 24731 | outside of the allocated space. Also enforce minimum>0. */ |
21ae7a4d JK |
24732 | if (stacki >= ARRAY_SIZE (stack) - 1) |
24733 | { | |
7d79de9a TT |
24734 | if (computed == nullptr) |
24735 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
24736 | return 0; |
24737 | } | |
24738 | ||
24739 | if (stacki <= 0) | |
24740 | { | |
7d79de9a TT |
24741 | if (computed == nullptr) |
24742 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
24743 | return 0; |
24744 | } | |
24745 | } | |
7d79de9a TT |
24746 | |
24747 | if (computed != nullptr) | |
24748 | *computed = true; | |
21ae7a4d | 24749 | return (stack[stacki]); |
c906108c SS |
24750 | } |
24751 | ||
24752 | /* memory allocation interface */ | |
24753 | ||
c906108c | 24754 | static struct dwarf_block * |
7b5a2f43 | 24755 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24756 | { |
8d749320 | 24757 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24758 | } |
24759 | ||
c906108c | 24760 | static struct die_info * |
b60c80d6 | 24761 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24762 | { |
24763 | struct die_info *die; | |
b60c80d6 DJ |
24764 | size_t size = sizeof (struct die_info); |
24765 | ||
24766 | if (num_attrs > 1) | |
24767 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24768 | |
b60c80d6 | 24769 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24770 | memset (die, 0, sizeof (struct die_info)); |
24771 | return (die); | |
24772 | } | |
2e276125 JB |
24773 | |
24774 | \f | |
a036ba48 | 24775 | |
c90ec28a | 24776 | /* Macro support. */ |
cf2c3c16 | 24777 | |
9eac9650 TT |
24778 | /* An overload of dwarf_decode_macros that finds the correct section |
24779 | and ensures it is read in before calling the other overload. */ | |
24780 | ||
24781 | static void | |
24782 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
24783 | int section_is_gnu) | |
24784 | { | |
976ca316 SM |
24785 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24786 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 24787 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
24788 | unsigned int offset_size = cu->header.offset_size; |
24789 | struct dwarf2_section_info *section; | |
24790 | const char *section_name; | |
24791 | ||
24792 | if (cu->dwo_unit != nullptr) | |
24793 | { | |
24794 | if (section_is_gnu) | |
24795 | { | |
24796 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24797 | section_name = ".debug_macro.dwo"; | |
24798 | } | |
24799 | else | |
24800 | { | |
24801 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24802 | section_name = ".debug_macinfo.dwo"; | |
24803 | } | |
24804 | } | |
24805 | else | |
24806 | { | |
24807 | if (section_is_gnu) | |
24808 | { | |
976ca316 | 24809 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
24810 | section_name = ".debug_macro"; |
24811 | } | |
24812 | else | |
24813 | { | |
976ca316 | 24814 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
24815 | section_name = ".debug_macinfo"; |
24816 | } | |
24817 | } | |
24818 | ||
24819 | section->read (objfile); | |
24820 | if (section->buffer == nullptr) | |
24821 | { | |
24822 | complaint (_("missing %s section"), section_name); | |
24823 | return; | |
24824 | } | |
24825 | ||
24826 | buildsym_compunit *builder = cu->get_builder (); | |
24827 | ||
048fde1e | 24828 | struct dwarf2_section_info *str_offsets_section; |
24829 | struct dwarf2_section_info *str_section; | |
24830 | ULONGEST str_offsets_base; | |
24831 | ||
24832 | if (cu->dwo_unit != nullptr) | |
24833 | { | |
24834 | str_offsets_section = &cu->dwo_unit->dwo_file | |
24835 | ->sections.str_offsets; | |
24836 | str_section = &cu->dwo_unit->dwo_file->sections.str; | |
24837 | str_offsets_base = cu->header.addr_size; | |
24838 | } | |
24839 | else | |
24840 | { | |
24841 | str_offsets_section = &per_objfile->per_bfd->str_offsets; | |
24842 | str_section = &per_objfile->per_bfd->str; | |
24843 | str_offsets_base = *cu->str_offsets_base; | |
24844 | } | |
24845 | ||
976ca316 | 24846 | dwarf_decode_macros (per_objfile, builder, section, lh, |
048fde1e | 24847 | offset_size, offset, str_section, str_offsets_section, |
24848 | str_offsets_base, section_is_gnu); | |
9eac9650 TT |
24849 | } |
24850 | ||
3019eac3 DE |
24851 | /* Return the .debug_loc section to use for CU. |
24852 | For DWO files use .debug_loc.dwo. */ | |
24853 | ||
24854 | static struct dwarf2_section_info * | |
24855 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24856 | { | |
976ca316 | 24857 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24858 | |
3019eac3 | 24859 | if (cu->dwo_unit) |
43988095 JK |
24860 | { |
24861 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 24862 | |
43988095 JK |
24863 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
24864 | } | |
976ca316 SM |
24865 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
24866 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
24867 | } |
24868 | ||
d0ce17d8 CT |
24869 | /* Return the .debug_rnglists section to use for CU. */ |
24870 | static struct dwarf2_section_info * | |
24871 | cu_debug_rnglists_section (struct dwarf2_cu *cu, dwarf_tag tag) | |
24872 | { | |
24873 | if (cu->header.version < 5) | |
24874 | error (_(".debug_rnglists section cannot be used in DWARF %d"), | |
24875 | cu->header.version); | |
24876 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
24877 | ||
24878 | /* Make sure we read the .debug_rnglists section from the file that | |
24879 | contains the DW_AT_ranges attribute we are reading. Normally that | |
24880 | would be the .dwo file, if there is one. However for DW_TAG_compile_unit | |
24881 | or DW_TAG_skeleton unit, we always want to read from objfile/linked | |
24882 | program. */ | |
24883 | if (cu->dwo_unit != nullptr | |
24884 | && tag != DW_TAG_compile_unit | |
24885 | && tag != DW_TAG_skeleton_unit) | |
24886 | { | |
24887 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24888 | ||
24889 | if (sections->rnglists.size > 0) | |
24890 | return §ions->rnglists; | |
24891 | else | |
24892 | error (_(".debug_rnglists section is missing from .dwo file.")); | |
24893 | } | |
24894 | return &dwarf2_per_objfile->per_bfd->rnglists; | |
24895 | } | |
24896 | ||
8cf6f0b1 TT |
24897 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24898 | ||
24899 | static void | |
24900 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24901 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24902 | const struct attribute *attr) |
8cf6f0b1 | 24903 | { |
976ca316 | 24904 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
24905 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24906 | ||
976ca316 | 24907 | section->read (per_objfile->objfile); |
8cf6f0b1 | 24908 | |
976ca316 | 24909 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
24910 | baton->per_cu = cu->per_cu; |
24911 | gdb_assert (baton->per_cu); | |
24912 | /* We don't know how long the location list is, but make sure we | |
24913 | don't run off the edge of the section. */ | |
d4df075e TT |
24914 | baton->size = section->size - attr->as_unsigned (); |
24915 | baton->data = section->buffer + attr->as_unsigned (); | |
2b24b6e4 TT |
24916 | if (cu->base_address.has_value ()) |
24917 | baton->base_address = *cu->base_address; | |
24918 | else | |
24919 | baton->base_address = 0; | |
f664829e | 24920 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24921 | } |
24922 | ||
4c2df51b | 24923 | static void |
ff39bb5e | 24924 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24925 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24926 | { |
976ca316 SM |
24927 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24928 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 24929 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24930 | |
cd6c91b4 | 24931 | if (attr->form_is_section_offset () |
3019eac3 | 24932 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24933 | the section. If so, fall through to the complaint in the |
24934 | other branch. */ | |
d4df075e | 24935 | && attr->as_unsigned () < section->get_size (objfile)) |
4c2df51b | 24936 | { |
0d53c4c4 | 24937 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24938 | |
8d749320 | 24939 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24940 | |
8cf6f0b1 | 24941 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24942 | |
2b24b6e4 | 24943 | if (!cu->base_address.has_value ()) |
b98664d3 | 24944 | complaint (_("Location list used without " |
3e43a32a | 24945 | "specifying the CU base address.")); |
4c2df51b | 24946 | |
f1e6e072 TT |
24947 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24948 | ? dwarf2_loclist_block_index | |
24949 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24950 | SYMBOL_LOCATION_BATON (sym) = baton; |
24951 | } | |
24952 | else | |
24953 | { | |
24954 | struct dwarf2_locexpr_baton *baton; | |
24955 | ||
8d749320 | 24956 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 24957 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
24958 | baton->per_cu = cu->per_cu; |
24959 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24960 | |
4fc6c0d5 | 24961 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24962 | { |
24963 | /* Note that we're just copying the block's data pointer | |
24964 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24965 | info_buffer for SYM's objfile; right now we never release |
24966 | that buffer, but when we do clean up properly this may | |
24967 | need to change. */ | |
9d2246fc TT |
24968 | struct dwarf_block *block = attr->as_block (); |
24969 | baton->size = block->size; | |
24970 | baton->data = block->data; | |
0d53c4c4 DJ |
24971 | } |
24972 | else | |
24973 | { | |
24974 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24975 | sym->natural_name ()); |
0d53c4c4 | 24976 | baton->size = 0; |
0d53c4c4 | 24977 | } |
6e70227d | 24978 | |
f1e6e072 TT |
24979 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24980 | ? dwarf2_locexpr_block_index | |
24981 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24982 | SYMBOL_LOCATION_BATON (sym) = baton; |
24983 | } | |
4c2df51b | 24984 | } |
6502dd73 | 24985 | |
2e6a9f79 | 24986 | /* See read.h. */ |
96408a79 | 24987 | |
2e6a9f79 SM |
24988 | const comp_unit_head * |
24989 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 24990 | { |
2e6a9f79 SM |
24991 | if (!m_header_read_in) |
24992 | { | |
24993 | const gdb_byte *info_ptr | |
24994 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 24995 | |
2e6a9f79 | 24996 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 24997 | |
2e6a9f79 SM |
24998 | read_comp_unit_head (&m_header, info_ptr, this->section, |
24999 | rcuh_kind::COMPILE); | |
25000 | } | |
96408a79 | 25001 | |
2e6a9f79 | 25002 | return &m_header; |
96408a79 SA |
25003 | } |
25004 | ||
09ba997f | 25005 | /* See read.h. */ |
ae0d2f24 | 25006 | |
98714339 | 25007 | int |
09ba997f | 25008 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 25009 | { |
2e6a9f79 | 25010 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
25011 | } |
25012 | ||
09ba997f | 25013 | /* See read.h. */ |
9eae7c52 TT |
25014 | |
25015 | int | |
09ba997f | 25016 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 25017 | { |
2e6a9f79 | 25018 | return this->get_header ()->offset_size; |
96408a79 SA |
25019 | } |
25020 | ||
09ba997f | 25021 | /* See read.h. */ |
96408a79 SA |
25022 | |
25023 | int | |
09ba997f | 25024 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 25025 | { |
2e6a9f79 | 25026 | const comp_unit_head *header = this->get_header (); |
96408a79 | 25027 | |
2e6a9f79 SM |
25028 | if (header->version == 2) |
25029 | return header->addr_size; | |
96408a79 | 25030 | else |
2e6a9f79 | 25031 | return header->offset_size; |
181cebd4 JK |
25032 | } |
25033 | ||
09ba997f | 25034 | /* See read.h. */ |
9aa1f1e3 | 25035 | |
09ba997f | 25036 | struct type * |
293e7e51 | 25037 | dwarf2_cu::addr_type () const |
9a49df9d | 25038 | { |
293e7e51 | 25039 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
25040 | struct type *void_type = objfile_type (objfile)->builtin_void; |
25041 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 25042 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
25043 | |
25044 | if (TYPE_LENGTH (addr_type) == addr_size) | |
25045 | return addr_type; | |
25046 | ||
c6d940a9 | 25047 | addr_type = addr_sized_int_type (addr_type->is_unsigned ()); |
9a49df9d AB |
25048 | return addr_type; |
25049 | } | |
25050 | ||
22b6cd70 TT |
25051 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
25052 | the index of the result, and that searches a vector. It will | |
25053 | return a result even if the offset in question does not actually | |
25054 | occur in any CU. This is separate so that it can be unit | |
25055 | tested. */ | |
ae038cb0 | 25056 | |
22b6cd70 TT |
25057 | static int |
25058 | dwarf2_find_containing_comp_unit | |
25059 | (sect_offset sect_off, | |
25060 | unsigned int offset_in_dwz, | |
25061 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 25062 | { |
ae038cb0 DJ |
25063 | int low, high; |
25064 | ||
ae038cb0 | 25065 | low = 0; |
22b6cd70 | 25066 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
25067 | while (high > low) |
25068 | { | |
36586728 | 25069 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25070 | int mid = low + (high - low) / 2; |
9a619af0 | 25071 | |
22b6cd70 | 25072 | mid_cu = all_comp_units[mid]; |
36586728 | 25073 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 25074 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 25075 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
25076 | high = mid; |
25077 | else | |
25078 | low = mid + 1; | |
25079 | } | |
25080 | gdb_assert (low == high); | |
22b6cd70 TT |
25081 | return low; |
25082 | } | |
25083 | ||
25084 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
25085 | the DIE at OFFSET. Raises an error on failure. */ | |
25086 | ||
25087 | static struct dwarf2_per_cu_data * | |
25088 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
25089 | unsigned int offset_in_dwz, | |
976ca316 | 25090 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 25091 | { |
976ca316 SM |
25092 | int low = dwarf2_find_containing_comp_unit |
25093 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
25094 | dwarf2_per_cu_data *this_cu = per_objfile->per_bfd->all_comp_units[low]; | |
22b6cd70 | 25095 | |
45b8ae0c | 25096 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 25097 | { |
36586728 | 25098 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25099 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
25100 | "offset %s [in module %s]"), |
25101 | sect_offset_str (sect_off), | |
976ca316 | 25102 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 25103 | |
976ca316 | 25104 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 25105 | <= sect_off); |
976ca316 | 25106 | return per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
25107 | } |
25108 | else | |
25109 | { | |
976ca316 | 25110 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 25111 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25112 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25113 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25114 | return this_cu; |
25115 | } | |
25116 | } | |
25117 | ||
22b6cd70 TT |
25118 | #if GDB_SELF_TEST |
25119 | ||
25120 | namespace selftests { | |
25121 | namespace find_containing_comp_unit { | |
25122 | ||
25123 | static void | |
25124 | run_test () | |
25125 | { | |
25126 | struct dwarf2_per_cu_data one {}; | |
25127 | struct dwarf2_per_cu_data two {}; | |
25128 | struct dwarf2_per_cu_data three {}; | |
25129 | struct dwarf2_per_cu_data four {}; | |
25130 | ||
25131 | one.length = 5; | |
25132 | two.sect_off = sect_offset (one.length); | |
25133 | two.length = 7; | |
25134 | ||
25135 | three.length = 5; | |
25136 | three.is_dwz = 1; | |
25137 | four.sect_off = sect_offset (three.length); | |
25138 | four.length = 7; | |
25139 | four.is_dwz = 1; | |
25140 | ||
25141 | std::vector<dwarf2_per_cu_data *> units; | |
25142 | units.push_back (&one); | |
25143 | units.push_back (&two); | |
25144 | units.push_back (&three); | |
25145 | units.push_back (&four); | |
25146 | ||
25147 | int result; | |
25148 | ||
25149 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
25150 | SELF_CHECK (units[result] == &one); | |
25151 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
25152 | SELF_CHECK (units[result] == &one); | |
25153 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
25154 | SELF_CHECK (units[result] == &two); | |
25155 | ||
25156 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
25157 | SELF_CHECK (units[result] == &three); | |
25158 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
25159 | SELF_CHECK (units[result] == &three); | |
25160 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
25161 | SELF_CHECK (units[result] == &four); | |
25162 | } | |
25163 | ||
25164 | } | |
25165 | } | |
25166 | ||
25167 | #endif /* GDB_SELF_TEST */ | |
25168 | ||
9e021579 | 25169 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 25170 | |
9e021579 SM |
25171 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
25172 | dwarf2_per_objfile *per_objfile) | |
25173 | : per_cu (per_cu), | |
25174 | per_objfile (per_objfile), | |
9068261f AB |
25175 | mark (false), |
25176 | has_loclist (false), | |
25177 | checked_producer (false), | |
25178 | producer_is_gxx_lt_4_6 (false), | |
25179 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 25180 | producer_is_icc (false), |
9068261f | 25181 | producer_is_icc_lt_14 (false), |
c258c396 | 25182 | producer_is_codewarrior (false), |
9068261f | 25183 | processing_has_namespace_info (false) |
93311388 | 25184 | { |
9816fde3 JK |
25185 | } |
25186 | ||
25187 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25188 | ||
25189 | static void | |
95554aad TT |
25190 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25191 | enum language pretend_language) | |
9816fde3 JK |
25192 | { |
25193 | struct attribute *attr; | |
25194 | ||
25195 | /* Set the language we're debugging. */ | |
25196 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 25197 | if (attr != nullptr) |
529908cb | 25198 | set_cu_language (attr->constant_value (0), cu); |
9816fde3 | 25199 | else |
9cded63f | 25200 | { |
95554aad | 25201 | cu->language = pretend_language; |
9cded63f TT |
25202 | cu->language_defn = language_def (cu->language); |
25203 | } | |
dee91e82 | 25204 | |
7d45c7c3 | 25205 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25206 | } |
25207 | ||
7188ed02 | 25208 | /* See read.h. */ |
ae038cb0 | 25209 | |
7188ed02 SM |
25210 | dwarf2_cu * |
25211 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 25212 | { |
7188ed02 SM |
25213 | auto it = m_dwarf2_cus.find (per_cu); |
25214 | if (it == m_dwarf2_cus.end ()) | |
25215 | return nullptr; | |
ae038cb0 | 25216 | |
7188ed02 SM |
25217 | return it->second; |
25218 | } | |
25219 | ||
25220 | /* See read.h. */ | |
25221 | ||
25222 | void | |
25223 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
25224 | { | |
25225 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
25226 | ||
25227 | m_dwarf2_cus[per_cu] = cu; | |
25228 | } | |
25229 | ||
25230 | /* See read.h. */ | |
25231 | ||
25232 | void | |
25233 | dwarf2_per_objfile::age_comp_units () | |
25234 | { | |
17e593e9 SM |
25235 | dwarf_read_debug_printf_v ("running"); |
25236 | ||
08ac5771 SM |
25237 | /* This is not expected to be called in the middle of CU expansion. There is |
25238 | an invariant that if a CU is in the CUs-to-expand queue, its DIEs are | |
25239 | loaded in memory. Calling age_comp_units while the queue is in use could | |
25240 | make us free the DIEs for a CU that is in the queue and therefore break | |
25241 | that invariant. */ | |
25242 | gdb_assert (!this->per_bfd->queue.has_value ()); | |
25243 | ||
7188ed02 SM |
25244 | /* Start by clearing all marks. */ |
25245 | for (auto pair : m_dwarf2_cus) | |
25246 | pair.second->mark = false; | |
25247 | ||
25248 | /* Traverse all CUs, mark them and their dependencies if used recently | |
25249 | enough. */ | |
25250 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 25251 | { |
7188ed02 SM |
25252 | dwarf2_cu *cu = pair.second; |
25253 | ||
25254 | cu->last_used++; | |
25255 | if (cu->last_used <= dwarf_max_cache_age) | |
25256 | dwarf2_mark (cu); | |
ae038cb0 DJ |
25257 | } |
25258 | ||
7188ed02 SM |
25259 | /* Delete all CUs still not marked. */ |
25260 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 25261 | { |
7188ed02 | 25262 | dwarf2_cu *cu = it->second; |
ae038cb0 | 25263 | |
7188ed02 | 25264 | if (!cu->mark) |
ae038cb0 | 25265 | { |
17e593e9 SM |
25266 | dwarf_read_debug_printf_v ("deleting old CU %s", |
25267 | sect_offset_str (cu->per_cu->sect_off)); | |
7188ed02 SM |
25268 | delete cu; |
25269 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
25270 | } |
25271 | else | |
7188ed02 | 25272 | it++; |
ae038cb0 DJ |
25273 | } |
25274 | } | |
25275 | ||
7188ed02 | 25276 | /* See read.h. */ |
ae038cb0 | 25277 | |
7188ed02 SM |
25278 | void |
25279 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 25280 | { |
7188ed02 SM |
25281 | auto it = m_dwarf2_cus.find (per_cu); |
25282 | if (it == m_dwarf2_cus.end ()) | |
25283 | return; | |
ae038cb0 | 25284 | |
7188ed02 | 25285 | delete it->second; |
ae038cb0 | 25286 | |
7188ed02 SM |
25287 | m_dwarf2_cus.erase (it); |
25288 | } | |
ae038cb0 | 25289 | |
7188ed02 SM |
25290 | dwarf2_per_objfile::~dwarf2_per_objfile () |
25291 | { | |
25292 | remove_all_cus (); | |
ae038cb0 DJ |
25293 | } |
25294 | ||
dee91e82 DE |
25295 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25296 | We store these in a hash table separate from the DIEs, and preserve them | |
25297 | when the DIEs are flushed out of cache. | |
25298 | ||
25299 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25300 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25301 | or the type may come from a DWO file. Furthermore, while it's more logical |
25302 | to use per_cu->section+offset, with Fission the section with the data is in | |
25303 | the DWO file but we don't know that section at the point we need it. | |
25304 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25305 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25306 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25307 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25308 | |
dee91e82 | 25309 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25310 | { |
dee91e82 | 25311 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25312 | sect_offset sect_off; |
1c379e20 DJ |
25313 | struct type *type; |
25314 | }; | |
25315 | ||
dee91e82 | 25316 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25317 | |
25318 | static hashval_t | |
dee91e82 | 25319 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25320 | { |
9a3c8263 SM |
25321 | const struct dwarf2_per_cu_offset_and_type *ofs |
25322 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25323 | |
9c541725 | 25324 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25325 | } |
25326 | ||
dee91e82 | 25327 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25328 | |
25329 | static int | |
dee91e82 | 25330 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25331 | { |
9a3c8263 SM |
25332 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25333 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25334 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25335 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25336 | |
dee91e82 | 25337 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25338 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25339 | } |
25340 | ||
25341 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25342 | table if necessary. For convenience, return TYPE. |
25343 | ||
25344 | The DIEs reading must have careful ordering to: | |
85102364 | 25345 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
25346 | reading current DIE. |
25347 | * Not trying to dereference contents of still incompletely read in types | |
25348 | while reading in other DIEs. | |
25349 | * Enable referencing still incompletely read in types just by a pointer to | |
25350 | the type without accessing its fields. | |
25351 | ||
25352 | Therefore caller should follow these rules: | |
25353 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25354 | before building the type and calling set_die_type. | |
e71ec853 | 25355 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25356 | possible before fetching more types to complete the current type. |
25357 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25358 | |
f792889a | 25359 | static struct type * |
57567375 TT |
25360 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
25361 | bool skip_data_location) | |
1c379e20 | 25362 | { |
976ca316 | 25363 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 25364 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 25365 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
25366 | struct attribute *attr; |
25367 | struct dynamic_prop prop; | |
1c379e20 | 25368 | |
b4ba55a1 JB |
25369 | /* For Ada types, make sure that the gnat-specific data is always |
25370 | initialized (if not already set). There are a few types where | |
25371 | we should not be doing so, because the type-specific area is | |
25372 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25373 | where the type-specific area is used to store the floatformat). | |
25374 | But this is not a problem, because the gnat-specific information | |
25375 | is actually not needed for these types. */ | |
25376 | if (need_gnat_info (cu) | |
78134374 SM |
25377 | && type->code () != TYPE_CODE_FUNC |
25378 | && type->code () != TYPE_CODE_FLT | |
25379 | && type->code () != TYPE_CODE_METHODPTR | |
25380 | && type->code () != TYPE_CODE_MEMBERPTR | |
25381 | && type->code () != TYPE_CODE_METHOD | |
09584414 | 25382 | && type->code () != TYPE_CODE_FIXED_POINT |
b4ba55a1 JB |
25383 | && !HAVE_GNAT_AUX_INFO (type)) |
25384 | INIT_GNAT_SPECIFIC (type); | |
25385 | ||
3f2f83dd KB |
25386 | /* Read DW_AT_allocated and set in type. */ |
25387 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
9cdf9820 | 25388 | if (attr != NULL) |
3f2f83dd | 25389 | { |
293e7e51 | 25390 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25391 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25392 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd | 25393 | } |
3f2f83dd KB |
25394 | |
25395 | /* Read DW_AT_associated and set in type. */ | |
25396 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
9cdf9820 | 25397 | if (attr != NULL) |
3f2f83dd | 25398 | { |
293e7e51 | 25399 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25400 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25401 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd | 25402 | } |
3f2f83dd | 25403 | |
3cdcd0ce | 25404 | /* Read DW_AT_data_location and set in type. */ |
57567375 TT |
25405 | if (!skip_data_location) |
25406 | { | |
25407 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25408 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) | |
25409 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); | |
25410 | } | |
3cdcd0ce | 25411 | |
976ca316 SM |
25412 | if (per_objfile->die_type_hash == NULL) |
25413 | per_objfile->die_type_hash | |
0335378b TT |
25414 | = htab_up (htab_create_alloc (127, |
25415 | per_cu_offset_and_type_hash, | |
25416 | per_cu_offset_and_type_eq, | |
25417 | NULL, xcalloc, xfree)); | |
1c379e20 | 25418 | |
dee91e82 | 25419 | ofs.per_cu = cu->per_cu; |
9c541725 | 25420 | ofs.sect_off = die->sect_off; |
1c379e20 | 25421 | ofs.type = type; |
dee91e82 | 25422 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 25423 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 25424 | if (*slot) |
b98664d3 | 25425 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25426 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25427 | *slot = XOBNEW (&objfile->objfile_obstack, |
25428 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25429 | **slot = ofs; |
f792889a | 25430 | return type; |
1c379e20 DJ |
25431 | } |
25432 | ||
9c541725 | 25433 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25434 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25435 | |
25436 | static struct type * | |
9c541725 | 25437 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 25438 | dwarf2_per_cu_data *per_cu, |
976ca316 | 25439 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 25440 | { |
dee91e82 | 25441 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 25442 | |
976ca316 | 25443 | if (per_objfile->die_type_hash == NULL) |
f792889a | 25444 | return NULL; |
1c379e20 | 25445 | |
dee91e82 | 25446 | ofs.per_cu = per_cu; |
9c541725 | 25447 | ofs.sect_off = sect_off; |
9a3c8263 | 25448 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 25449 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
25450 | if (slot) |
25451 | return slot->type; | |
25452 | else | |
25453 | return NULL; | |
25454 | } | |
25455 | ||
02142a6c | 25456 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25457 | or return NULL if DIE does not have a saved type. */ |
25458 | ||
25459 | static struct type * | |
25460 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25461 | { | |
aa66c379 | 25462 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
25463 | } |
25464 | ||
10b3939b DJ |
25465 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25466 | ||
25467 | static void | |
25468 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25469 | struct dwarf2_per_cu_data *ref_per_cu) | |
25470 | { | |
25471 | void **slot; | |
25472 | ||
25473 | if (cu->dependencies == NULL) | |
25474 | cu->dependencies | |
25475 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25476 | NULL, &cu->comp_unit_obstack, | |
25477 | hashtab_obstack_allocate, | |
25478 | dummy_obstack_deallocate); | |
25479 | ||
25480 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25481 | if (*slot == NULL) | |
25482 | *slot = ref_per_cu; | |
25483 | } | |
1c379e20 | 25484 | |
f504f079 DE |
25485 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25486 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
25487 | cache that we must keep because we are keeping CU. |
25488 | ||
25489 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 25490 | |
10b3939b DJ |
25491 | static int |
25492 | dwarf2_mark_helper (void **slot, void *data) | |
25493 | { | |
7188ed02 SM |
25494 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
25495 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
25496 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
25497 | |
25498 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25499 | reading of the chain. As such dependencies remain valid it is not much | |
25500 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 25501 | if (cu == nullptr) |
d07ed419 JK |
25502 | return 1; |
25503 | ||
7188ed02 | 25504 | if (cu->mark) |
10b3939b | 25505 | return 1; |
10b3939b | 25506 | |
7188ed02 SM |
25507 | cu->mark = true; |
25508 | ||
25509 | if (cu->dependencies != nullptr) | |
25510 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
25511 | |
25512 | return 1; | |
25513 | } | |
25514 | ||
f504f079 DE |
25515 | /* Set the mark field in CU and in every other compilation unit in the |
25516 | cache that we must keep because we are keeping CU. */ | |
25517 | ||
ae038cb0 DJ |
25518 | static void |
25519 | dwarf2_mark (struct dwarf2_cu *cu) | |
25520 | { | |
25521 | if (cu->mark) | |
25522 | return; | |
7188ed02 | 25523 | |
9068261f | 25524 | cu->mark = true; |
ae038cb0 | 25525 | |
7188ed02 SM |
25526 | if (cu->dependencies != nullptr) |
25527 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
25528 | } |
25529 | ||
72bf9492 DJ |
25530 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25531 | is its offset in .debug_info for this objfile. */ | |
25532 | ||
25533 | static hashval_t | |
25534 | partial_die_hash (const void *item) | |
25535 | { | |
9a3c8263 SM |
25536 | const struct partial_die_info *part_die |
25537 | = (const struct partial_die_info *) item; | |
9a619af0 | 25538 | |
9c541725 | 25539 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25540 | } |
25541 | ||
25542 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25543 | are equal if they have the same offset. */ | |
25544 | ||
25545 | static int | |
25546 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25547 | { | |
9a3c8263 SM |
25548 | const struct partial_die_info *part_die_lhs |
25549 | = (const struct partial_die_info *) item_lhs; | |
25550 | const struct partial_die_info *part_die_rhs | |
25551 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25552 | |
9c541725 | 25553 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25554 | } |
25555 | ||
3c3bb058 AB |
25556 | struct cmd_list_element *set_dwarf_cmdlist; |
25557 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 25558 | |
9291a0cd | 25559 | static void |
cd4fb1b2 SM |
25560 | show_check_physname (struct ui_file *file, int from_tty, |
25561 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25562 | { |
cd4fb1b2 SM |
25563 | fprintf_filtered (file, |
25564 | _("Whether to check \"physname\" is %s.\n"), | |
25565 | value); | |
9291a0cd TT |
25566 | } |
25567 | ||
6c265988 | 25568 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 25569 | void |
6c265988 | 25570 | _initialize_dwarf2_read () |
9291a0cd | 25571 | { |
0743fc83 | 25572 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 25573 | Set DWARF specific variables.\n\ |
590042fc | 25574 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
25575 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
25576 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25577 | |
0743fc83 | 25578 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
25579 | Show DWARF specific variables.\n\ |
25580 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
25581 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
25582 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25583 | |
cd4fb1b2 SM |
25584 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25585 | &dwarf_max_cache_age, _("\ | |
25586 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25587 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25588 | A higher limit means that cached compilation units will be stored\n\ | |
25589 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25590 | caching, which can slow down startup."), | |
25591 | NULL, | |
25592 | show_dwarf_max_cache_age, | |
25593 | &set_dwarf_cmdlist, | |
25594 | &show_dwarf_cmdlist); | |
156942c7 | 25595 | |
cd4fb1b2 SM |
25596 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25597 | Set debugging of the DWARF reader."), _("\ | |
25598 | Show debugging of the DWARF reader."), _("\ | |
25599 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25600 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25601 | information. A value greater than 1 provides more verbose information."), | |
25602 | NULL, | |
25603 | NULL, | |
25604 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25605 | |
cd4fb1b2 SM |
25606 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25607 | Set debugging of the DWARF DIE reader."), _("\ | |
25608 | Show debugging of the DWARF DIE reader."), _("\ | |
25609 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25610 | The value is the maximum depth to print."), | |
25611 | NULL, | |
25612 | NULL, | |
25613 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25614 | |
cd4fb1b2 SM |
25615 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25616 | Set debugging of the dwarf line reader."), _("\ | |
25617 | Show debugging of the dwarf line reader."), _("\ | |
25618 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25619 | A value of 1 (one) provides basic information.\n\ | |
25620 | A value greater than 1 provides more verbose information."), | |
25621 | NULL, | |
25622 | NULL, | |
25623 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25624 | |
cd4fb1b2 SM |
25625 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25626 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25627 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25628 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25629 | the demangler."), | |
25630 | NULL, show_check_physname, | |
25631 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25632 | |
e615022a DE |
25633 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25634 | no_class, &use_deprecated_index_sections, _("\ | |
25635 | Set whether to use deprecated gdb_index sections."), _("\ | |
25636 | Show whether to use deprecated gdb_index sections."), _("\ | |
25637 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25638 | Normally they are ignored either because of a missing feature or\n\ | |
25639 | performance issue.\n\ | |
25640 | Warning: This option must be enabled before gdb reads the file."), | |
25641 | NULL, | |
25642 | NULL, | |
25643 | &setlist, &showlist); | |
25644 | ||
f1e6e072 TT |
25645 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25646 | &dwarf2_locexpr_funcs); | |
25647 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25648 | &dwarf2_loclist_funcs); | |
25649 | ||
25650 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25651 | &dwarf2_block_frame_base_locexpr_funcs); | |
25652 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25653 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25654 | |
25655 | #if GDB_SELF_TEST | |
25656 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25657 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
25658 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
25659 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 25660 | #endif |
6502dd73 | 25661 | } |