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 | |
18a8505e | 554 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 555 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 556 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
557 | be used without needing to know whether DWO files are in use or not. |
558 | N.B. This does not apply to DW_AT_ranges appearing in | |
559 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
560 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 561 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 562 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 563 | ULONGEST ranges_base = 0; |
2e3cf129 | 564 | |
41144253 | 565 | /* The DW_AT_loclists_base attribute if present. */ |
566 | ULONGEST loclist_base = 0; | |
567 | ||
c9317f21 TT |
568 | /* When reading debug info generated by older versions of rustc, we |
569 | have to rewrite some union types to be struct types with a | |
570 | variant part. This rewriting must be done after the CU is fully | |
571 | read in, because otherwise at the point of rewriting some struct | |
572 | type might not have been fully processed. So, we keep a list of | |
573 | all such types here and process them after expansion. */ | |
574 | std::vector<struct type *> rust_unions; | |
575 | ||
18a8505e AT |
576 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
577 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
578 | value is often implicit and is the size of the header of | |
579 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
580 | gdb::optional<ULONGEST> str_offsets_base; | |
581 | ||
ae038cb0 | 582 | /* Mark used when releasing cached dies. */ |
9068261f | 583 | bool mark : 1; |
ae038cb0 | 584 | |
8be455d7 JK |
585 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
586 | This test is imperfect as there may exist optimized debug code not using | |
587 | any location list and still facing inlining issues if handled as | |
588 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 589 | bool has_loclist : 1; |
ba919b58 | 590 | |
9068261f | 591 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
592 | if all the producer_is_* fields are valid. This information is cached |
593 | because profiling CU expansion showed excessive time spent in | |
594 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
595 | bool checked_producer : 1; |
596 | bool producer_is_gxx_lt_4_6 : 1; | |
597 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 598 | bool producer_is_icc : 1; |
9068261f | 599 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 600 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 601 | |
9068261f | 602 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
603 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
604 | this information, but later versions do. */ | |
605 | ||
9068261f | 606 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
607 | |
608 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
609 | |
610 | /* If this CU was inherited by another CU (via specification, | |
611 | abstract_origin, etc), this is the ancestor CU. */ | |
612 | dwarf2_cu *ancestor; | |
613 | ||
614 | /* Get the buildsym_compunit for this CU. */ | |
615 | buildsym_compunit *get_builder () | |
616 | { | |
617 | /* If this CU has a builder associated with it, use that. */ | |
618 | if (m_builder != nullptr) | |
619 | return m_builder.get (); | |
620 | ||
621 | /* Otherwise, search ancestors for a valid builder. */ | |
622 | if (ancestor != nullptr) | |
623 | return ancestor->get_builder (); | |
624 | ||
625 | return nullptr; | |
626 | } | |
e7c27a73 DJ |
627 | }; |
628 | ||
094b34ac DE |
629 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
630 | This includes type_unit_group and quick_file_names. */ | |
631 | ||
632 | struct stmt_list_hash | |
633 | { | |
634 | /* The DWO unit this table is from or NULL if there is none. */ | |
635 | struct dwo_unit *dwo_unit; | |
636 | ||
637 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 638 | sect_offset line_sect_off; |
094b34ac DE |
639 | }; |
640 | ||
5989a64e | 641 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
642 | an object of this type. This contains elements of type unit groups |
643 | that can be shared across objfiles. The non-shareable parts are in | |
644 | type_unit_group_unshareable. */ | |
f4dc4d17 DE |
645 | |
646 | struct type_unit_group | |
647 | { | |
0186c6a7 | 648 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
649 | To simplify things we create an artificial CU that "includes" all the |
650 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 651 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
652 | struct dwarf2_per_cu_data per_cu; |
653 | ||
0186c6a7 DE |
654 | /* The TUs that share this DW_AT_stmt_list entry. |
655 | This is added to while parsing type units to build partial symtabs, | |
656 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 657 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 658 | |
094b34ac DE |
659 | /* The data used to construct the hash key. */ |
660 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
661 | }; |
662 | ||
73869dc2 | 663 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
664 | |
665 | struct dwo_sections | |
666 | { | |
667 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
668 | struct dwarf2_section_info line; |
669 | struct dwarf2_section_info loc; | |
43988095 | 670 | struct dwarf2_section_info loclists; |
09262596 DE |
671 | struct dwarf2_section_info macinfo; |
672 | struct dwarf2_section_info macro; | |
d0ce17d8 | 673 | struct dwarf2_section_info rnglists; |
3019eac3 DE |
674 | struct dwarf2_section_info str; |
675 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
676 | /* In the case of a virtual DWO file, these two are unused. */ |
677 | struct dwarf2_section_info info; | |
fd5866f6 | 678 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
679 | }; |
680 | ||
c88ee1f0 | 681 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
682 | |
683 | struct dwo_unit | |
684 | { | |
685 | /* Backlink to the containing struct dwo_file. */ | |
686 | struct dwo_file *dwo_file; | |
687 | ||
688 | /* The "id" that distinguishes this CU/TU. | |
689 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
690 | Since signatures came first, we stick with it for consistency. */ | |
691 | ULONGEST signature; | |
692 | ||
693 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 694 | struct dwarf2_section_info *section; |
3019eac3 | 695 | |
9c541725 PA |
696 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
697 | sect_offset sect_off; | |
3019eac3 DE |
698 | unsigned int length; |
699 | ||
700 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
701 | cu_offset type_offset_in_tu; | |
702 | }; | |
703 | ||
73869dc2 DE |
704 | /* include/dwarf2.h defines the DWP section codes. |
705 | It defines a max value but it doesn't define a min value, which we | |
706 | use for error checking, so provide one. */ | |
707 | ||
708 | enum dwp_v2_section_ids | |
709 | { | |
710 | DW_SECT_MIN = 1 | |
711 | }; | |
712 | ||
80626a55 | 713 | /* Data for one DWO file. |
57d63ce2 DE |
714 | |
715 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
716 | appears in a DWP file). DWP files don't really have DWO files per se - | |
717 | comdat folding of types "loses" the DWO file they came from, and from | |
718 | a high level view DWP files appear to contain a mass of random types. | |
719 | However, to maintain consistency with the non-DWP case we pretend DWP | |
720 | files contain virtual DWO files, and we assign each TU with one virtual | |
721 | DWO file (generally based on the line and abbrev section offsets - | |
722 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
723 | |
724 | struct dwo_file | |
725 | { | |
51ac9db5 SM |
726 | dwo_file () = default; |
727 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
728 | ||
18a8505e | 729 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
730 | For virtual DWO files the name is constructed from the section offsets |
731 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
732 | from related CU+TUs. */ | |
51ac9db5 | 733 | const char *dwo_name = nullptr; |
0ac5b59e DE |
734 | |
735 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 736 | const char *comp_dir = nullptr; |
3019eac3 | 737 | |
80626a55 DE |
738 | /* The bfd, when the file is open. Otherwise this is NULL. |
739 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 740 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 741 | |
73869dc2 | 742 | /* The sections that make up this DWO file. |
d2854d8d | 743 | Remember that for virtual DWO files in DWP V2 or DWP V5, these are virtual |
73869dc2 | 744 | sections (for lack of a better name). */ |
51ac9db5 | 745 | struct dwo_sections sections {}; |
3019eac3 | 746 | |
33c5cd75 DB |
747 | /* The CUs in the file. |
748 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
749 | an extension to handle LLVM's Link Time Optimization output (where | |
750 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 751 | htab_up cus; |
3019eac3 DE |
752 | |
753 | /* Table of TUs in the file. | |
754 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 755 | htab_up tus; |
3019eac3 DE |
756 | }; |
757 | ||
80626a55 DE |
758 | /* These sections are what may appear in a DWP file. */ |
759 | ||
760 | struct dwp_sections | |
761 | { | |
d2854d8d | 762 | /* These are used by all DWP versions (1, 2 and 5). */ |
80626a55 DE |
763 | struct dwarf2_section_info str; |
764 | struct dwarf2_section_info cu_index; | |
765 | struct dwarf2_section_info tu_index; | |
73869dc2 | 766 | |
d2854d8d | 767 | /* These are only used by DWP version 2 and version 5 files. |
73869dc2 DE |
768 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other |
769 | sections are referenced by section number, and are not recorded here. | |
d2854d8d CT |
770 | In DWP version 2 or 5 there is at most one copy of all these sections, |
771 | each section being (effectively) comprised of the concatenation of all of | |
772 | the individual sections that exist in the version 1 format. | |
73869dc2 DE |
773 | To keep the code simple we treat each of these concatenated pieces as a |
774 | section itself (a virtual section?). */ | |
775 | struct dwarf2_section_info abbrev; | |
776 | struct dwarf2_section_info info; | |
777 | struct dwarf2_section_info line; | |
778 | struct dwarf2_section_info loc; | |
d2854d8d | 779 | struct dwarf2_section_info loclists; |
73869dc2 DE |
780 | struct dwarf2_section_info macinfo; |
781 | struct dwarf2_section_info macro; | |
d2854d8d | 782 | struct dwarf2_section_info rnglists; |
73869dc2 DE |
783 | struct dwarf2_section_info str_offsets; |
784 | struct dwarf2_section_info types; | |
80626a55 DE |
785 | }; |
786 | ||
73869dc2 DE |
787 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
788 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 789 | |
73869dc2 | 790 | struct virtual_v1_dwo_sections |
80626a55 DE |
791 | { |
792 | struct dwarf2_section_info abbrev; | |
793 | struct dwarf2_section_info line; | |
794 | struct dwarf2_section_info loc; | |
795 | struct dwarf2_section_info macinfo; | |
796 | struct dwarf2_section_info macro; | |
797 | struct dwarf2_section_info str_offsets; | |
798 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 799 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
800 | struct dwarf2_section_info info_or_types; |
801 | }; | |
802 | ||
d2854d8d | 803 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2 or 5. |
73869dc2 DE |
804 | In version 2, the sections of the DWO files are concatenated together |
805 | and stored in one section of that name. Thus each ELF section contains | |
806 | several "virtual" sections. */ | |
807 | ||
d2854d8d | 808 | struct virtual_v2_or_v5_dwo_sections |
73869dc2 DE |
809 | { |
810 | bfd_size_type abbrev_offset; | |
811 | bfd_size_type abbrev_size; | |
812 | ||
813 | bfd_size_type line_offset; | |
814 | bfd_size_type line_size; | |
815 | ||
816 | bfd_size_type loc_offset; | |
817 | bfd_size_type loc_size; | |
818 | ||
d2854d8d CT |
819 | bfd_size_type loclists_offset; |
820 | bfd_size_type loclists_size; | |
821 | ||
73869dc2 DE |
822 | bfd_size_type macinfo_offset; |
823 | bfd_size_type macinfo_size; | |
824 | ||
825 | bfd_size_type macro_offset; | |
826 | bfd_size_type macro_size; | |
827 | ||
d2854d8d CT |
828 | bfd_size_type rnglists_offset; |
829 | bfd_size_type rnglists_size; | |
830 | ||
73869dc2 DE |
831 | bfd_size_type str_offsets_offset; |
832 | bfd_size_type str_offsets_size; | |
833 | ||
834 | /* Each DWP hash table entry records one CU or one TU. | |
835 | That is recorded here, and copied to dwo_unit.section. */ | |
836 | bfd_size_type info_or_types_offset; | |
837 | bfd_size_type info_or_types_size; | |
838 | }; | |
839 | ||
80626a55 DE |
840 | /* Contents of DWP hash tables. */ |
841 | ||
842 | struct dwp_hash_table | |
843 | { | |
73869dc2 | 844 | uint32_t version, nr_columns; |
80626a55 | 845 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
846 | const gdb_byte *hash_table, *unit_table; |
847 | union | |
848 | { | |
849 | struct | |
850 | { | |
851 | const gdb_byte *indices; | |
852 | } v1; | |
853 | struct | |
854 | { | |
855 | /* This is indexed by column number and gives the id of the section | |
856 | in that column. */ | |
857 | #define MAX_NR_V2_DWO_SECTIONS \ | |
858 | (1 /* .debug_info or .debug_types */ \ | |
859 | + 1 /* .debug_abbrev */ \ | |
860 | + 1 /* .debug_line */ \ | |
861 | + 1 /* .debug_loc */ \ | |
862 | + 1 /* .debug_str_offsets */ \ | |
863 | + 1 /* .debug_macro or .debug_macinfo */) | |
864 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
865 | const gdb_byte *offsets; | |
866 | const gdb_byte *sizes; | |
867 | } v2; | |
d2854d8d CT |
868 | struct |
869 | { | |
870 | /* This is indexed by column number and gives the id of the section | |
871 | in that column. */ | |
872 | #define MAX_NR_V5_DWO_SECTIONS \ | |
873 | (1 /* .debug_info */ \ | |
874 | + 1 /* .debug_abbrev */ \ | |
875 | + 1 /* .debug_line */ \ | |
876 | + 1 /* .debug_loclists */ \ | |
877 | + 1 /* .debug_str_offsets */ \ | |
878 | + 1 /* .debug_macro */ \ | |
879 | + 1 /* .debug_rnglists */) | |
880 | int section_ids[MAX_NR_V5_DWO_SECTIONS]; | |
881 | const gdb_byte *offsets; | |
882 | const gdb_byte *sizes; | |
883 | } v5; | |
73869dc2 | 884 | } section_pool; |
80626a55 DE |
885 | }; |
886 | ||
887 | /* Data for one DWP file. */ | |
888 | ||
889 | struct dwp_file | |
890 | { | |
400174b1 TT |
891 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
892 | : name (name_), | |
893 | dbfd (std::move (abfd)) | |
894 | { | |
895 | } | |
896 | ||
80626a55 DE |
897 | /* Name of the file. */ |
898 | const char *name; | |
899 | ||
73869dc2 | 900 | /* File format version. */ |
400174b1 | 901 | int version = 0; |
73869dc2 | 902 | |
93417882 | 903 | /* The bfd. */ |
400174b1 | 904 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
905 | |
906 | /* Section info for this file. */ | |
400174b1 | 907 | struct dwp_sections sections {}; |
80626a55 | 908 | |
57d63ce2 | 909 | /* Table of CUs in the file. */ |
400174b1 | 910 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
911 | |
912 | /* Table of TUs in the file. */ | |
400174b1 | 913 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 914 | |
19ac8c2e | 915 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
916 | htab_up loaded_cus; |
917 | htab_up loaded_tus; | |
80626a55 | 918 | |
73869dc2 DE |
919 | /* Table to map ELF section numbers to their sections. |
920 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
921 | unsigned int num_sections = 0; |
922 | asection **elf_sections = nullptr; | |
80626a55 DE |
923 | }; |
924 | ||
0963b4bd MS |
925 | /* Struct used to pass misc. parameters to read_die_and_children, et |
926 | al. which are used for both .debug_info and .debug_types dies. | |
927 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 928 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
929 | |
930 | struct die_reader_specs | |
931 | { | |
a32a8923 | 932 | /* The bfd of die_section. */ |
93311388 DE |
933 | bfd* abfd; |
934 | ||
935 | /* The CU of the DIE we are parsing. */ | |
936 | struct dwarf2_cu *cu; | |
937 | ||
80626a55 | 938 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
939 | struct dwo_file *dwo_file; |
940 | ||
dee91e82 | 941 | /* The section the die comes from. |
3019eac3 | 942 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
943 | struct dwarf2_section_info *die_section; |
944 | ||
945 | /* die_section->buffer. */ | |
d521ce57 | 946 | const gdb_byte *buffer; |
f664829e DE |
947 | |
948 | /* The end of the buffer. */ | |
949 | const gdb_byte *buffer_end; | |
a2ce51a0 | 950 | |
685af9cd TT |
951 | /* The abbreviation table to use when reading the DIEs. */ |
952 | struct abbrev_table *abbrev_table; | |
93311388 DE |
953 | }; |
954 | ||
c0ab21c2 TT |
955 | /* A subclass of die_reader_specs that holds storage and has complex |
956 | constructor and destructor behavior. */ | |
957 | ||
958 | class cutu_reader : public die_reader_specs | |
959 | { | |
960 | public: | |
961 | ||
ab432490 SM |
962 | cutu_reader (dwarf2_per_cu_data *this_cu, |
963 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 964 | struct abbrev_table *abbrev_table, |
2e671100 | 965 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
966 | bool skip_partial); |
967 | ||
968 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 969 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
970 | struct dwarf2_cu *parent_cu = nullptr, |
971 | struct dwo_file *dwo_file = nullptr); | |
972 | ||
c0ab21c2 TT |
973 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
974 | ||
975 | const gdb_byte *info_ptr = nullptr; | |
976 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
977 | bool dummy_p = false; |
978 | ||
6751ebae TT |
979 | /* Release the new CU, putting it on the chain. This cannot be done |
980 | for dummy CUs. */ | |
981 | void keep (); | |
982 | ||
c0ab21c2 | 983 | private: |
9e021579 SM |
984 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
985 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 986 | dwarf2_cu *existing_cu); |
c0ab21c2 TT |
987 | |
988 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
989 | std::unique_ptr<dwarf2_cu> m_new_cu; |
990 | ||
991 | /* The ordinary abbreviation table. */ | |
992 | abbrev_table_up m_abbrev_table_holder; | |
993 | ||
994 | /* The DWO abbreviation table. */ | |
995 | abbrev_table_up m_dwo_abbrev_table; | |
996 | }; | |
dee91e82 | 997 | |
c906108c | 998 | /* When we construct a partial symbol table entry we only |
0963b4bd | 999 | need this much information. */ |
6f06d47b | 1000 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1001 | { |
6f06d47b YQ |
1002 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1003 | ||
1004 | /* Disable assign but still keep copy ctor, which is needed | |
1005 | load_partial_dies. */ | |
1006 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1007 | ||
52356b79 YQ |
1008 | /* Adjust the partial die before generating a symbol for it. This |
1009 | function may set the is_external flag or change the DIE's | |
1010 | name. */ | |
1011 | void fixup (struct dwarf2_cu *cu); | |
1012 | ||
48fbe735 YQ |
1013 | /* Read a minimal amount of information into the minimal die |
1014 | structure. */ | |
1015 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1016 | const struct abbrev_info &abbrev, | |
1017 | const gdb_byte *info_ptr); | |
1018 | ||
7d00ffec TT |
1019 | /* Compute the name of this partial DIE. This memoizes the |
1020 | result, so it is safe to call multiple times. */ | |
1021 | const char *name (dwarf2_cu *cu); | |
1022 | ||
72bf9492 | 1023 | /* Offset of this DIE. */ |
6f06d47b | 1024 | const sect_offset sect_off; |
72bf9492 DJ |
1025 | |
1026 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1027 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1028 | |
72bf9492 | 1029 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1030 | const unsigned int has_children : 1; |
1031 | ||
72bf9492 DJ |
1032 | unsigned int is_external : 1; |
1033 | unsigned int is_declaration : 1; | |
1034 | unsigned int has_type : 1; | |
1035 | unsigned int has_specification : 1; | |
1036 | unsigned int has_pc_info : 1; | |
481860b3 | 1037 | unsigned int may_be_inlined : 1; |
72bf9492 | 1038 | |
0c1b455e TT |
1039 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1040 | unsigned int main_subprogram : 1; | |
1041 | ||
72bf9492 DJ |
1042 | /* Flag set if the SCOPE field of this structure has been |
1043 | computed. */ | |
1044 | unsigned int scope_set : 1; | |
1045 | ||
fa4028e9 JB |
1046 | /* Flag set if the DIE has a byte_size attribute. */ |
1047 | unsigned int has_byte_size : 1; | |
1048 | ||
ff908ebf AW |
1049 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1050 | unsigned int has_const_value : 1; | |
1051 | ||
98bfdba5 PA |
1052 | /* Flag set if any of the DIE's children are template arguments. */ |
1053 | unsigned int has_template_arguments : 1; | |
1054 | ||
52356b79 | 1055 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1056 | unsigned int fixup_called : 1; |
1057 | ||
36586728 TT |
1058 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1059 | unsigned int is_dwz : 1; | |
1060 | ||
1061 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1062 | unsigned int spec_is_dwz : 1; | |
1063 | ||
7d00ffec TT |
1064 | unsigned int canonical_name : 1; |
1065 | ||
72bf9492 | 1066 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1067 | sometimes a default name for unnamed DIEs. */ |
7d00ffec | 1068 | const char *raw_name = nullptr; |
72bf9492 | 1069 | |
abc72ce4 | 1070 | /* The linkage name, if present. */ |
6f06d47b | 1071 | const char *linkage_name = nullptr; |
abc72ce4 | 1072 | |
72bf9492 DJ |
1073 | /* The scope to prepend to our children. This is generally |
1074 | allocated on the comp_unit_obstack, so will disappear | |
1075 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1076 | const char *scope = nullptr; |
72bf9492 | 1077 | |
95554aad TT |
1078 | /* Some data associated with the partial DIE. The tag determines |
1079 | which field is live. */ | |
1080 | union | |
1081 | { | |
1082 | /* The location description associated with this DIE, if any. */ | |
1083 | struct dwarf_block *locdesc; | |
1084 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1085 | sect_offset sect_off; |
6f06d47b | 1086 | } d {}; |
72bf9492 DJ |
1087 | |
1088 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1089 | CORE_ADDR lowpc = 0; |
1090 | CORE_ADDR highpc = 0; | |
72bf9492 | 1091 | |
93311388 | 1092 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1093 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1094 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1095 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1096 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1097 | |
1098 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1099 | DW_AT_specification (or DW_AT_abstract_origin or | |
1100 | DW_AT_extension). */ | |
6f06d47b | 1101 | sect_offset spec_offset {}; |
72bf9492 DJ |
1102 | |
1103 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1104 | if any. */ | |
6f06d47b YQ |
1105 | struct partial_die_info *die_parent = nullptr; |
1106 | struct partial_die_info *die_child = nullptr; | |
1107 | struct partial_die_info *die_sibling = nullptr; | |
1108 | ||
1109 | friend struct partial_die_info * | |
1110 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1111 | ||
1112 | private: | |
1113 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1114 | partial_die_info (sect_offset sect_off) | |
1115 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1116 | { | |
1117 | } | |
1118 | ||
1119 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1120 | int has_children_) | |
1121 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1122 | { | |
1123 | is_external = 0; | |
1124 | is_declaration = 0; | |
1125 | has_type = 0; | |
1126 | has_specification = 0; | |
1127 | has_pc_info = 0; | |
1128 | may_be_inlined = 0; | |
1129 | main_subprogram = 0; | |
1130 | scope_set = 0; | |
1131 | has_byte_size = 0; | |
1132 | has_const_value = 0; | |
1133 | has_template_arguments = 0; | |
1134 | fixup_called = 0; | |
1135 | is_dwz = 0; | |
1136 | spec_is_dwz = 0; | |
7d00ffec | 1137 | canonical_name = 0; |
6f06d47b | 1138 | } |
c906108c SS |
1139 | }; |
1140 | ||
c906108c SS |
1141 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1142 | but this would require a corresponding change in unpack_field_as_long | |
1143 | and friends. */ | |
1144 | static int bits_per_byte = 8; | |
1145 | ||
9c6a1327 TT |
1146 | struct variant_part_builder; |
1147 | ||
1148 | /* When reading a variant, we track a bit more information about the | |
1149 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1150 | |
1151 | struct variant_field | |
1152 | { | |
9c6a1327 TT |
1153 | int first_field = -1; |
1154 | int last_field = -1; | |
1155 | ||
1156 | /* A variant can contain other variant parts. */ | |
1157 | std::vector<variant_part_builder> variant_parts; | |
1158 | ||
2ddeaf8a TT |
1159 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1160 | default branch. */ | |
9c6a1327 TT |
1161 | bool default_branch = false; |
1162 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1163 | value. */ | |
1164 | ULONGEST discriminant_value = 0; | |
1165 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1166 | data. */ | |
1167 | struct dwarf_block *discr_list_data = nullptr; | |
1168 | }; | |
1169 | ||
1170 | /* This represents a DW_TAG_variant_part. */ | |
1171 | ||
1172 | struct variant_part_builder | |
1173 | { | |
1174 | /* The offset of the discriminant field. */ | |
1175 | sect_offset discriminant_offset {}; | |
1176 | ||
1177 | /* Variants that are direct children of this variant part. */ | |
1178 | std::vector<variant_field> variants; | |
1179 | ||
1180 | /* True if we're currently reading a variant. */ | |
1181 | bool processing_variant = false; | |
2ddeaf8a TT |
1182 | }; |
1183 | ||
52059ffd TT |
1184 | struct nextfield |
1185 | { | |
be2daae6 TT |
1186 | int accessibility = 0; |
1187 | int virtuality = 0; | |
9c6a1327 TT |
1188 | /* Variant parts need to find the discriminant, which is a DIE |
1189 | reference. We track the section offset of each field to make | |
1190 | this link. */ | |
1191 | sect_offset offset; | |
be2daae6 | 1192 | struct field field {}; |
52059ffd TT |
1193 | }; |
1194 | ||
1195 | struct fnfieldlist | |
1196 | { | |
be2daae6 TT |
1197 | const char *name = nullptr; |
1198 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1199 | }; |
1200 | ||
c906108c SS |
1201 | /* The routines that read and process dies for a C struct or C++ class |
1202 | pass lists of data member fields and lists of member function fields | |
1203 | in an instance of a field_info structure, as defined below. */ | |
1204 | struct field_info | |
2de01bdb SM |
1205 | { |
1206 | /* List of data member and baseclasses fields. */ | |
1207 | std::vector<struct nextfield> fields; | |
1208 | std::vector<struct nextfield> baseclasses; | |
1209 | ||
1210 | /* Set if the accessibility of one of the fields is not public. */ | |
264fc0e2 | 1211 | bool non_public_fields = false; |
2de01bdb SM |
1212 | |
1213 | /* Member function fieldlist array, contains name of possibly overloaded | |
1214 | member function, number of overloaded member functions and a pointer | |
1215 | to the head of the member function field chain. */ | |
1216 | std::vector<struct fnfieldlist> fnfieldlists; | |
1217 | ||
1218 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1219 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1220 | std::vector<struct decl_field> typedef_field_list; | |
1221 | ||
1222 | /* Nested types defined by this class and the number of elements in this | |
1223 | list. */ | |
1224 | std::vector<struct decl_field> nested_types_list; | |
1225 | ||
1226 | /* If non-null, this is the variant part we are currently | |
1227 | reading. */ | |
1228 | variant_part_builder *current_variant_part = nullptr; | |
1229 | /* This holds all the top-level variant parts attached to the type | |
1230 | we're reading. */ | |
1231 | std::vector<variant_part_builder> variant_parts; | |
1232 | ||
1233 | /* Return the total number of fields (including baseclasses). */ | |
1234 | int nfields () const | |
c5aa993b | 1235 | { |
2de01bdb SM |
1236 | return fields.size () + baseclasses.size (); |
1237 | } | |
1238 | }; | |
c906108c | 1239 | |
ae038cb0 DJ |
1240 | /* Loaded secondary compilation units are kept in memory until they |
1241 | have not been referenced for the processing of this many | |
1242 | compilation units. Set this to zero to disable caching. Cache | |
1243 | sizes of up to at least twenty will improve startup time for | |
1244 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1245 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1246 | static void |
b4f54984 DE |
1247 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1248 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1249 | { |
3e43a32a | 1250 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1251 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1252 | value); |
1253 | } | |
4390d890 | 1254 | \f |
c906108c SS |
1255 | /* local function prototypes */ |
1256 | ||
918dd910 JK |
1257 | static void dwarf2_find_base_address (struct die_info *die, |
1258 | struct dwarf2_cu *cu); | |
1259 | ||
891813be | 1260 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1261 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1262 | const char *name); | |
0018ea6f | 1263 | |
f1902523 JK |
1264 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1265 | const gdb_byte *info_ptr, | |
3e225074 | 1266 | struct die_info *type_unit_die); |
f1902523 | 1267 | |
976ca316 | 1268 | static void dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile); |
c906108c | 1269 | |
72bf9492 DJ |
1270 | static void scan_partial_symbols (struct partial_die_info *, |
1271 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1272 | int, struct dwarf2_cu *); |
c906108c | 1273 | |
72bf9492 DJ |
1274 | static void add_partial_symbol (struct partial_die_info *, |
1275 | struct dwarf2_cu *); | |
63d06c5c | 1276 | |
72bf9492 DJ |
1277 | static void add_partial_namespace (struct partial_die_info *pdi, |
1278 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1279 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1280 | |
5d7cb8df | 1281 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1282 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1283 | struct dwarf2_cu *cu); |
1284 | ||
72bf9492 DJ |
1285 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1286 | struct dwarf2_cu *cu); | |
91c24f0a | 1287 | |
bc30ff58 JB |
1288 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1289 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1290 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1291 | |
d521ce57 | 1292 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1293 | |
dee91e82 | 1294 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1295 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1296 | |
fb816e8b TV |
1297 | /* A pair of partial_die_info and compilation unit. */ |
1298 | struct cu_partial_die_info | |
1299 | { | |
1300 | /* The compilation unit of the partial_die_info. */ | |
1301 | struct dwarf2_cu *cu; | |
1302 | /* A partial_die_info. */ | |
1303 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1304 | |
1305 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1306 | : cu (cu), | |
1307 | pdi (pdi) | |
405feb71 | 1308 | { /* Nothing. */ } |
122cf0f2 AB |
1309 | |
1310 | private: | |
1311 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1312 | }; |
1313 | ||
122cf0f2 AB |
1314 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1315 | struct dwarf2_cu *); | |
72bf9492 | 1316 | |
d521ce57 TT |
1317 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1318 | struct attribute *, struct attr_abbrev *, | |
7a5f294d | 1319 | const gdb_byte *); |
18a8505e AT |
1320 | |
1321 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 1322 | struct attribute *attr, dwarf_tag tag); |
18a8505e AT |
1323 | |
1324 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1325 | |
976ca316 SM |
1326 | static sect_offset read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
1327 | dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1328 | |
ed2dc618 | 1329 | static const char *read_indirect_string |
976ca316 | 1330 | (dwarf2_per_objfile *per_objfile, bfd *, const gdb_byte *, |
ed2dc618 | 1331 | const struct comp_unit_head *, unsigned int *); |
4bdf3d34 | 1332 | |
ed2dc618 | 1333 | static const char *read_indirect_string_at_offset |
976ca316 | 1334 | (dwarf2_per_objfile *per_objfile, LONGEST str_offset); |
927aa2e7 | 1335 | |
d521ce57 TT |
1336 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1337 | const gdb_byte *, | |
3019eac3 DE |
1338 | unsigned int *); |
1339 | ||
18a8505e AT |
1340 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1341 | ULONGEST str_index); | |
1342 | ||
1343 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1344 | ULONGEST str_index); | |
3019eac3 | 1345 | |
e142c38c | 1346 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1347 | |
e142c38c DJ |
1348 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1349 | struct dwarf2_cu *); | |
c906108c | 1350 | |
7d45c7c3 | 1351 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
dda83cd7 | 1352 | struct dwarf2_cu *cu); |
7d45c7c3 | 1353 | |
a084a2a6 AT |
1354 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1355 | ||
05cf31d1 | 1356 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
dda83cd7 | 1357 | struct dwarf2_cu *cu); |
05cf31d1 | 1358 | |
e142c38c | 1359 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1360 | |
e142c38c | 1361 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1362 | struct dwarf2_cu **); |
63d06c5c | 1363 | |
9c541725 | 1364 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1365 | struct dwarf2_cu *cu); |
debd256d | 1366 | |
f3f5162e | 1367 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1368 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1369 | CORE_ADDR, int decode_mapping); |
c906108c | 1370 | |
804d2729 TT |
1371 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1372 | const char *); | |
c906108c | 1373 | |
a14ed312 | 1374 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1375 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1376 | |
ff39bb5e | 1377 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1378 | struct dwarf2_cu *); |
c906108c | 1379 | |
ff39bb5e | 1380 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1381 | struct type *type, |
1382 | const char *name, | |
1383 | struct obstack *obstack, | |
12df843f | 1384 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1385 | const gdb_byte **bytes, |
98bfdba5 | 1386 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1387 | |
57567375 TT |
1388 | static struct type *read_subrange_index_type (struct die_info *die, |
1389 | struct dwarf2_cu *cu); | |
1390 | ||
e7c27a73 | 1391 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1392 | |
b4ba55a1 JB |
1393 | static int need_gnat_info (struct dwarf2_cu *); |
1394 | ||
3e43a32a MS |
1395 | static struct type *die_descriptive_type (struct die_info *, |
1396 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1397 | |
1398 | static void set_descriptive_type (struct type *, struct die_info *, | |
1399 | struct dwarf2_cu *); | |
1400 | ||
e7c27a73 DJ |
1401 | static struct type *die_containing_type (struct die_info *, |
1402 | struct dwarf2_cu *); | |
c906108c | 1403 | |
ff39bb5e | 1404 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1405 | struct dwarf2_cu *); |
c906108c | 1406 | |
f792889a | 1407 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1408 | |
673bfd45 DE |
1409 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1410 | ||
0d5cff50 | 1411 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1412 | |
6e70227d | 1413 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1414 | const char *suffix, int physname, |
1415 | struct dwarf2_cu *cu); | |
63d06c5c | 1416 | |
e7c27a73 | 1417 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1418 | |
348e048f DE |
1419 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1420 | ||
e7c27a73 | 1421 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1422 | |
e7c27a73 | 1423 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1424 | |
96408a79 SA |
1425 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1426 | ||
71a3c369 TT |
1427 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1428 | ||
41144253 | 1429 | /* Return the .debug_loclists section to use for cu. */ |
1430 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1431 | ||
d0ce17d8 CT |
1432 | /* Return the .debug_rnglists section to use for cu. */ |
1433 | static struct dwarf2_section_info *cu_debug_rnglists_section | |
1434 | (struct dwarf2_cu *cu, dwarf_tag tag); | |
1435 | ||
3a2b436a | 1436 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1437 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1438 | enum pc_bounds_kind |
1439 | { | |
e385593e | 1440 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1441 | PC_BOUNDS_NOT_PRESENT, |
1442 | ||
e385593e JK |
1443 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1444 | were present but they do not form a valid range of PC addresses. */ | |
1445 | PC_BOUNDS_INVALID, | |
1446 | ||
3a2b436a JK |
1447 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1448 | PC_BOUNDS_RANGES, | |
1449 | ||
1450 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1451 | PC_BOUNDS_HIGH_LOW, | |
1452 | }; | |
1453 | ||
1454 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1455 | CORE_ADDR *, CORE_ADDR *, | |
1456 | struct dwarf2_cu *, | |
891813be | 1457 | dwarf2_psymtab *); |
c906108c | 1458 | |
fae299cd DC |
1459 | static void get_scope_pc_bounds (struct die_info *, |
1460 | CORE_ADDR *, CORE_ADDR *, | |
1461 | struct dwarf2_cu *); | |
1462 | ||
801e3a5b | 1463 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
dda83cd7 | 1464 | CORE_ADDR, struct dwarf2_cu *); |
801e3a5b | 1465 | |
a14ed312 | 1466 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1467 | struct dwarf2_cu *); |
c906108c | 1468 | |
a14ed312 | 1469 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1470 | struct type *, struct dwarf2_cu *); |
c906108c | 1471 | |
a14ed312 | 1472 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1473 | struct die_info *, struct type *, |
e7c27a73 | 1474 | struct dwarf2_cu *); |
c906108c | 1475 | |
a14ed312 | 1476 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1477 | struct type *, |
1478 | struct dwarf2_cu *); | |
c906108c | 1479 | |
134d01f1 | 1480 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1481 | |
e7c27a73 | 1482 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1483 | |
e7c27a73 | 1484 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1485 | |
5d7cb8df JK |
1486 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1487 | ||
804d2729 | 1488 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1489 | |
27aa8d6a SW |
1490 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1491 | ||
74921315 KS |
1492 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1493 | ||
f55ee35c JK |
1494 | static struct type *read_module_type (struct die_info *die, |
1495 | struct dwarf2_cu *cu); | |
1496 | ||
38d518c9 | 1497 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1498 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1499 | |
134d01f1 | 1500 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1501 | |
7d79de9a TT |
1502 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1503 | bool * = nullptr); | |
c906108c | 1504 | |
6e70227d | 1505 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1506 | struct dwarf2_cu *); |
1507 | ||
bf6af496 | 1508 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1509 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1510 | struct die_info *); |
639d11d3 | 1511 | |
dee91e82 | 1512 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1513 | const gdb_byte *info_ptr, |
1514 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1515 | struct die_info *parent); |
1516 | ||
d521ce57 TT |
1517 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1518 | struct die_info **, const gdb_byte *, | |
3e225074 | 1519 | int); |
3019eac3 | 1520 | |
d521ce57 | 1521 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1522 | struct die_info **, const gdb_byte *); |
93311388 | 1523 | |
e7c27a73 | 1524 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1525 | |
15d034d0 | 1526 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1527 | struct objfile *); |
71c25dea | 1528 | |
15d034d0 | 1529 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1530 | |
15d034d0 | 1531 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1532 | struct die_info *die, |
1533 | struct dwarf2_cu *cu); | |
1534 | ||
ca69b9e6 DE |
1535 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1536 | struct dwarf2_cu *cu); | |
1537 | ||
e142c38c | 1538 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1539 | struct dwarf2_cu **); |
9219021c | 1540 | |
d97bc12b DE |
1541 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1542 | ||
1543 | static void dump_die_for_error (struct die_info *); | |
1544 | ||
1545 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1546 | struct die_info *); | |
c906108c | 1547 | |
d97bc12b | 1548 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1549 | |
51545339 | 1550 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1551 | struct dwarf2_cu *); |
c906108c | 1552 | |
348e048f | 1553 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1554 | const struct attribute *, |
348e048f DE |
1555 | struct dwarf2_cu **); |
1556 | ||
10b3939b | 1557 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1558 | const struct attribute *, |
f2f0e013 | 1559 | struct dwarf2_cu **); |
c906108c | 1560 | |
348e048f | 1561 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1562 | const struct attribute *, |
348e048f DE |
1563 | struct dwarf2_cu **); |
1564 | ||
ac9ec31b DE |
1565 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1566 | struct dwarf2_cu *); | |
1567 | ||
1568 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1569 | const struct attribute *, |
ac9ec31b DE |
1570 | struct dwarf2_cu *); |
1571 | ||
ab432490 SM |
1572 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1573 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1574 | |
ab432490 SM |
1575 | static void read_signatured_type (signatured_type *sig_type, |
1576 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1577 | |
63e43d3a PMR |
1578 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1579 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1580 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1581 | |
c906108c SS |
1582 | /* memory allocation interface */ |
1583 | ||
7b5a2f43 | 1584 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1585 | |
b60c80d6 | 1586 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1587 | |
43f3e411 | 1588 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1589 | |
8cf6f0b1 TT |
1590 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1591 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1592 | const struct attribute *attr); |
8cf6f0b1 | 1593 | |
ff39bb5e | 1594 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1595 | struct symbol *sym, |
f1e6e072 TT |
1596 | struct dwarf2_cu *cu, |
1597 | int is_block); | |
4c2df51b | 1598 | |
d521ce57 TT |
1599 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1600 | const gdb_byte *info_ptr, | |
1601 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1602 | |
72bf9492 DJ |
1603 | static hashval_t partial_die_hash (const void *item); |
1604 | ||
1605 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1606 | ||
ae038cb0 | 1607 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 | 1608 | (sect_offset sect_off, unsigned int offset_in_dwz, |
976ca316 | 1609 | dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1610 | |
9816fde3 | 1611 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1612 | struct die_info *comp_unit_die, |
1613 | enum language pretend_language); | |
93311388 | 1614 | |
f792889a | 1615 | static struct type *set_die_type (struct die_info *, struct type *, |
57567375 | 1616 | struct dwarf2_cu *, bool = false); |
1c379e20 | 1617 | |
976ca316 | 1618 | static void create_all_comp_units (dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1619 | |
976ca316 | 1620 | static int create_all_type_units (dwarf2_per_objfile *per_objfile); |
1fd400ff | 1621 | |
ab432490 SM |
1622 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1623 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 1624 | dwarf2_cu *existing_cu, |
ab432490 SM |
1625 | bool skip_partial, |
1626 | enum language pretend_language); | |
10b3939b | 1627 | |
8fc0b21d | 1628 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1629 | enum language pretend_language); |
10b3939b | 1630 | |
8fc0b21d | 1631 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1632 | enum language pretend_language); |
f4dc4d17 | 1633 | |
10b3939b DJ |
1634 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1635 | struct dwarf2_per_cu_data *); | |
1636 | ||
ae038cb0 DJ |
1637 | static void dwarf2_mark (struct dwarf2_cu *); |
1638 | ||
b64f50a1 | 1639 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1640 | dwarf2_per_cu_data *per_cu, |
1641 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1642 | |
f792889a | 1643 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1644 | |
120ce1b5 SM |
1645 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1646 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1647 | enum language pretend_language); |
1648 | ||
976ca316 | 1649 | static void process_queue (dwarf2_per_objfile *per_objfile); |
9291a0cd | 1650 | |
b303c6f6 AB |
1651 | /* Class, the destructor of which frees all allocated queue entries. This |
1652 | will only have work to do if an error was thrown while processing the | |
1653 | dwarf. If no error was thrown then the queue entries should have all | |
1654 | been processed, and freed, as we went along. */ | |
1655 | ||
1656 | class dwarf2_queue_guard | |
1657 | { | |
1658 | public: | |
39856def TT |
1659 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1660 | : m_per_objfile (per_objfile) | |
1661 | { | |
1662 | } | |
b303c6f6 AB |
1663 | |
1664 | /* Free any entries remaining on the queue. There should only be | |
1665 | entries left if we hit an error while processing the dwarf. */ | |
1666 | ~dwarf2_queue_guard () | |
1667 | { | |
39856def TT |
1668 | /* Ensure that no memory is allocated by the queue. */ |
1669 | std::queue<dwarf2_queue_item> empty; | |
5989a64e | 1670 | std::swap (m_per_objfile->per_bfd->queue, empty); |
39856def | 1671 | } |
b303c6f6 | 1672 | |
39856def | 1673 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1674 | |
39856def TT |
1675 | private: |
1676 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1677 | }; |
1678 | ||
39856def TT |
1679 | dwarf2_queue_item::~dwarf2_queue_item () |
1680 | { | |
1681 | /* Anything still marked queued is likely to be in an | |
1682 | inconsistent state, so discard it. */ | |
1683 | if (per_cu->queued) | |
1684 | { | |
7188ed02 | 1685 | per_objfile->remove_cu (per_cu); |
39856def TT |
1686 | per_cu->queued = 0; |
1687 | } | |
1688 | } | |
1689 | ||
d721ba37 PA |
1690 | /* The return type of find_file_and_directory. Note, the enclosed |
1691 | string pointers are only valid while this object is valid. */ | |
1692 | ||
1693 | struct file_and_directory | |
1694 | { | |
1695 | /* The filename. This is never NULL. */ | |
1696 | const char *name; | |
1697 | ||
1698 | /* The compilation directory. NULL if not known. If we needed to | |
1699 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1700 | points directly to the DW_AT_comp_dir string attribute owned by | |
1701 | the obstack that owns the DIE. */ | |
1702 | const char *comp_dir; | |
1703 | ||
1704 | /* If we needed to build a new string for comp_dir, this is what | |
1705 | owns the storage. */ | |
1706 | std::string comp_dir_storage; | |
1707 | }; | |
1708 | ||
1709 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1710 | struct dwarf2_cu *cu); | |
9291a0cd | 1711 | |
298e9637 | 1712 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1713 | |
298e9637 | 1714 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1715 | |
57d63ce2 | 1716 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
976ca316 SM |
1717 | (dwarf2_per_objfile *per_objfile, struct dwp_file *dwp_file, |
1718 | const char *comp_dir, ULONGEST signature, int is_debug_types); | |
a2ce51a0 | 1719 | |
976ca316 | 1720 | static struct dwp_file *get_dwp_file (dwarf2_per_objfile *per_objfile); |
a2ce51a0 | 1721 | |
3019eac3 | 1722 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1723 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1724 | ULONGEST signature); | |
3019eac3 DE |
1725 | |
1726 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1727 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1728 | |
1b555f17 | 1729 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1730 | |
263db9a1 TT |
1731 | /* A unique pointer to a dwo_file. */ |
1732 | ||
51ac9db5 | 1733 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1734 | |
976ca316 | 1735 | static void process_cu_includes (dwarf2_per_objfile *per_objfile); |
95554aad | 1736 | |
1b80a9fa | 1737 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1738 | |
1739 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1740 | \f |
1741 | /* Various complaints about symbol reading that don't abort the process. */ | |
1742 | ||
4390d890 DE |
1743 | static void |
1744 | dwarf2_debug_line_missing_file_complaint (void) | |
1745 | { | |
b98664d3 | 1746 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1747 | } |
1748 | ||
1749 | static void | |
1750 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1751 | { | |
b98664d3 | 1752 | complaint (_(".debug_line section has line " |
4390d890 DE |
1753 | "program sequence without an end")); |
1754 | } | |
1755 | ||
1756 | static void | |
1757 | dwarf2_complex_location_expr_complaint (void) | |
1758 | { | |
b98664d3 | 1759 | complaint (_("location expression too complex")); |
4390d890 DE |
1760 | } |
1761 | ||
1762 | static void | |
1763 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1764 | int arg3) | |
1765 | { | |
b98664d3 | 1766 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1767 | arg1, arg2, arg3); |
1768 | } | |
1769 | ||
4390d890 DE |
1770 | static void |
1771 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1772 | { | |
b98664d3 | 1773 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1774 | arg1, arg2); |
1775 | } | |
527f3840 JK |
1776 | |
1777 | /* Hash function for line_header_hash. */ | |
1778 | ||
1779 | static hashval_t | |
1780 | line_header_hash (const struct line_header *ofs) | |
1781 | { | |
9c541725 | 1782 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1783 | } |
1784 | ||
1785 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1786 | ||
1787 | static hashval_t | |
1788 | line_header_hash_voidp (const void *item) | |
1789 | { | |
9a3c8263 | 1790 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1791 | |
1792 | return line_header_hash (ofs); | |
1793 | } | |
1794 | ||
1795 | /* Equality function for line_header_hash. */ | |
1796 | ||
1797 | static int | |
1798 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1799 | { | |
9a3c8263 SM |
1800 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1801 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1802 | |
9c541725 | 1803 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1804 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1805 | } | |
1806 | ||
4390d890 | 1807 | \f |
9291a0cd | 1808 | |
330cdd98 PA |
1809 | /* See declaration. */ |
1810 | ||
5989a64e SM |
1811 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1812 | bool can_copy_) | |
c3699833 SM |
1813 | : obfd (obfd), |
1814 | can_copy (can_copy_) | |
330cdd98 PA |
1815 | { |
1816 | if (names == NULL) | |
1817 | names = &dwarf2_elf_names; | |
1818 | ||
330cdd98 PA |
1819 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1820 | locate_sections (obfd, sec, *names); | |
1821 | } | |
1822 | ||
5989a64e | 1823 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1824 | { |
b76e467d | 1825 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1826 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1827 | |
b2bdb8cf | 1828 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1829 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1830 | |
5989a64e | 1831 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1832 | } |
1833 | ||
7188ed02 | 1834 | /* See read.h. */ |
330cdd98 PA |
1835 | |
1836 | void | |
7188ed02 | 1837 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1838 | { |
7188ed02 SM |
1839 | for (auto pair : m_dwarf2_cus) |
1840 | delete pair.second; | |
330cdd98 | 1841 | |
7188ed02 | 1842 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1843 | } |
1844 | ||
11ed8cad TT |
1845 | /* A helper class that calls free_cached_comp_units on |
1846 | destruction. */ | |
1847 | ||
1848 | class free_cached_comp_units | |
1849 | { | |
1850 | public: | |
1851 | ||
1852 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1853 | : m_per_objfile (per_objfile) | |
1854 | { | |
1855 | } | |
1856 | ||
1857 | ~free_cached_comp_units () | |
1858 | { | |
7188ed02 | 1859 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1860 | } |
1861 | ||
1862 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1863 | ||
1864 | private: | |
1865 | ||
1866 | dwarf2_per_objfile *m_per_objfile; | |
1867 | }; | |
1868 | ||
af758d11 SM |
1869 | /* See read.h. */ |
1870 | ||
1871 | bool | |
1872 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1873 | { | |
1874 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1875 | ||
1876 | return this->m_symtabs[per_cu->index] != nullptr; | |
1877 | } | |
1878 | ||
1879 | /* See read.h. */ | |
1880 | ||
1881 | compunit_symtab * | |
1882 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1883 | { | |
1884 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1885 | ||
1886 | return this->m_symtabs[per_cu->index]; | |
1887 | } | |
1888 | ||
1889 | /* See read.h. */ | |
1890 | ||
1891 | void | |
1892 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1893 | compunit_symtab *symtab) | |
1894 | { | |
1895 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1896 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1897 | ||
1898 | this->m_symtabs[per_cu->index] = symtab; | |
1899 | } | |
1900 | ||
c906108c | 1901 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1902 | information and return true if we have enough to do something. |
1903 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1904 | ELF names are used. CAN_COPY is true for formats where symbol |
1905 | interposition is possible and so symbol values must follow copy | |
1906 | relocation rules. */ | |
c906108c SS |
1907 | |
1908 | int | |
251d32d9 | 1909 | dwarf2_has_info (struct objfile *objfile, |
dda83cd7 | 1910 | const struct dwarf2_debug_sections *names, |
4b610737 | 1911 | bool can_copy) |
c906108c | 1912 | { |
97cbe998 SDJ |
1913 | if (objfile->flags & OBJF_READNEVER) |
1914 | return 0; | |
1915 | ||
976ca316 | 1916 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 1917 | |
976ca316 | 1918 | if (per_objfile == NULL) |
5989a64e | 1919 | { |
17ee85fc TT |
1920 | dwarf2_per_bfd *per_bfd; |
1921 | ||
1922 | /* We can share a "dwarf2_per_bfd" with other objfiles if the BFD | |
dda83cd7 | 1923 | doesn't require relocations and if there aren't partial symbols |
17ee85fc TT |
1924 | from some other reader. */ |
1925 | if (!objfile_has_partial_symbols (objfile) | |
1926 | && !gdb_bfd_requires_relocations (objfile->obfd)) | |
1927 | { | |
1928 | /* See if one has been created for this BFD yet. */ | |
1929 | per_bfd = dwarf2_per_bfd_bfd_data_key.get (objfile->obfd); | |
1930 | ||
1931 | if (per_bfd == nullptr) | |
1932 | { | |
1933 | /* No, create it now. */ | |
1934 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1935 | dwarf2_per_bfd_bfd_data_key.set (objfile->obfd, per_bfd); | |
1936 | } | |
1937 | } | |
1938 | else | |
1939 | { | |
1940 | /* No sharing possible, create one specifically for this objfile. */ | |
1941 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1942 | dwarf2_per_bfd_objfile_data_key.set (objfile, per_bfd); | |
1943 | } | |
5989a64e | 1944 | |
976ca316 | 1945 | per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); |
5989a64e | 1946 | } |
5bfd760d | 1947 | |
976ca316 SM |
1948 | return (!per_objfile->per_bfd->info.is_virtual |
1949 | && per_objfile->per_bfd->info.s.section != NULL | |
1950 | && !per_objfile->per_bfd->abbrev.is_virtual | |
1951 | && per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
1952 | } |
1953 | ||
251d32d9 TG |
1954 | /* When loading sections, we look either for uncompressed section or for |
1955 | compressed section names. */ | |
233a11ab CS |
1956 | |
1957 | static int | |
251d32d9 | 1958 | section_is_p (const char *section_name, |
dda83cd7 | 1959 | const struct dwarf2_section_names *names) |
233a11ab | 1960 | { |
251d32d9 TG |
1961 | if (names->normal != NULL |
1962 | && strcmp (section_name, names->normal) == 0) | |
1963 | return 1; | |
1964 | if (names->compressed != NULL | |
1965 | && strcmp (section_name, names->compressed) == 0) | |
1966 | return 1; | |
1967 | return 0; | |
233a11ab CS |
1968 | } |
1969 | ||
330cdd98 | 1970 | /* See declaration. */ |
c906108c | 1971 | |
330cdd98 | 1972 | void |
5989a64e SM |
1973 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
1974 | const dwarf2_debug_sections &names) | |
c906108c | 1975 | { |
fd361982 | 1976 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1977 | |
dc7650b8 JK |
1978 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1979 | { | |
1980 | } | |
950b7495 KS |
1981 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1982 | > bfd_get_file_size (abfd)) | |
1983 | { | |
1984 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1985 | warning (_("Discarding section %s which has a section size (%s" | |
1986 | ") larger than the file size [in module %s]"), | |
1987 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1988 | bfd_get_filename (abfd)); | |
1989 | } | |
330cdd98 | 1990 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1991 | { |
330cdd98 | 1992 | this->info.s.section = sectp; |
fd361982 | 1993 | this->info.size = bfd_section_size (sectp); |
c906108c | 1994 | } |
330cdd98 | 1995 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 1996 | { |
330cdd98 | 1997 | this->abbrev.s.section = sectp; |
fd361982 | 1998 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 1999 | } |
330cdd98 | 2000 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2001 | { |
330cdd98 | 2002 | this->line.s.section = sectp; |
fd361982 | 2003 | this->line.size = bfd_section_size (sectp); |
c906108c | 2004 | } |
330cdd98 | 2005 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2006 | { |
330cdd98 | 2007 | this->loc.s.section = sectp; |
fd361982 | 2008 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2009 | } |
330cdd98 | 2010 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2011 | { |
330cdd98 | 2012 | this->loclists.s.section = sectp; |
fd361982 | 2013 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2014 | } |
330cdd98 | 2015 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2016 | { |
330cdd98 | 2017 | this->macinfo.s.section = sectp; |
fd361982 | 2018 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2019 | } |
330cdd98 | 2020 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2021 | { |
330cdd98 | 2022 | this->macro.s.section = sectp; |
fd361982 | 2023 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2024 | } |
330cdd98 | 2025 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2026 | { |
330cdd98 | 2027 | this->str.s.section = sectp; |
fd361982 | 2028 | this->str.size = bfd_section_size (sectp); |
c906108c | 2029 | } |
18a8505e AT |
2030 | else if (section_is_p (sectp->name, &names.str_offsets)) |
2031 | { | |
2032 | this->str_offsets.s.section = sectp; | |
2033 | this->str_offsets.size = bfd_section_size (sectp); | |
2034 | } | |
330cdd98 | 2035 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2036 | { |
330cdd98 | 2037 | this->line_str.s.section = sectp; |
fd361982 | 2038 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2039 | } |
330cdd98 | 2040 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2041 | { |
330cdd98 | 2042 | this->addr.s.section = sectp; |
fd361982 | 2043 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2044 | } |
330cdd98 | 2045 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2046 | { |
330cdd98 | 2047 | this->frame.s.section = sectp; |
fd361982 | 2048 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2049 | } |
330cdd98 | 2050 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2051 | { |
330cdd98 | 2052 | this->eh_frame.s.section = sectp; |
fd361982 | 2053 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2054 | } |
330cdd98 | 2055 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2056 | { |
330cdd98 | 2057 | this->ranges.s.section = sectp; |
fd361982 | 2058 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2059 | } |
330cdd98 | 2060 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2061 | { |
330cdd98 | 2062 | this->rnglists.s.section = sectp; |
fd361982 | 2063 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2064 | } |
330cdd98 | 2065 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2066 | { |
8b70b953 TT |
2067 | struct dwarf2_section_info type_section; |
2068 | ||
2069 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2070 | type_section.s.section = sectp; |
fd361982 | 2071 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2072 | |
fd5866f6 | 2073 | this->types.push_back (type_section); |
348e048f | 2074 | } |
330cdd98 | 2075 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2076 | { |
330cdd98 | 2077 | this->gdb_index.s.section = sectp; |
fd361982 | 2078 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2079 | } |
927aa2e7 JK |
2080 | else if (section_is_p (sectp->name, &names.debug_names)) |
2081 | { | |
2082 | this->debug_names.s.section = sectp; | |
fd361982 | 2083 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2084 | } |
2085 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2086 | { | |
2087 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2088 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2089 | } |
dce234bc | 2090 | |
fd361982 AM |
2091 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2092 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2093 | this->has_section_at_zero = true; |
c906108c SS |
2094 | } |
2095 | ||
dce234bc | 2096 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2097 | SECTION_NAME. */ |
af34e669 | 2098 | |
dce234bc | 2099 | void |
3017a003 | 2100 | dwarf2_get_section_info (struct objfile *objfile, |
dda83cd7 SM |
2101 | enum dwarf2_section_enum sect, |
2102 | asection **sectp, const gdb_byte **bufp, | |
2103 | bfd_size_type *sizep) | |
dce234bc | 2104 | { |
976ca316 | 2105 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
dce234bc | 2106 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2107 | |
2108 | /* We may see an objfile without any DWARF, in which case we just | |
2109 | return nothing. */ | |
976ca316 | 2110 | if (per_objfile == NULL) |
a3b2a86b TT |
2111 | { |
2112 | *sectp = NULL; | |
2113 | *bufp = NULL; | |
2114 | *sizep = 0; | |
2115 | return; | |
2116 | } | |
3017a003 TG |
2117 | switch (sect) |
2118 | { | |
2119 | case DWARF2_DEBUG_FRAME: | |
976ca316 | 2120 | info = &per_objfile->per_bfd->frame; |
3017a003 TG |
2121 | break; |
2122 | case DWARF2_EH_FRAME: | |
976ca316 | 2123 | info = &per_objfile->per_bfd->eh_frame; |
3017a003 TG |
2124 | break; |
2125 | default: | |
2126 | gdb_assert_not_reached ("unexpected section"); | |
2127 | } | |
dce234bc | 2128 | |
96b79293 | 2129 | info->read (objfile); |
dce234bc | 2130 | |
96b79293 | 2131 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2132 | *bufp = info->buffer; |
2133 | *sizep = info->size; | |
2134 | } | |
2135 | ||
36586728 TT |
2136 | /* A helper function to find the sections for a .dwz file. */ |
2137 | ||
2138 | static void | |
5bb6e9dd | 2139 | locate_dwz_sections (bfd *abfd, asection *sectp, dwz_file *dwz_file) |
36586728 | 2140 | { |
36586728 TT |
2141 | /* Note that we only support the standard ELF names, because .dwz |
2142 | is ELF-only (at the time of writing). */ | |
2143 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2144 | { | |
049412e3 | 2145 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2146 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2147 | } |
2148 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2149 | { | |
049412e3 | 2150 | dwz_file->info.s.section = sectp; |
fd361982 | 2151 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2152 | } |
2153 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2154 | { | |
049412e3 | 2155 | dwz_file->str.s.section = sectp; |
fd361982 | 2156 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2157 | } |
2158 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2159 | { | |
049412e3 | 2160 | dwz_file->line.s.section = sectp; |
fd361982 | 2161 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2162 | } |
2163 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2164 | { | |
049412e3 | 2165 | dwz_file->macro.s.section = sectp; |
fd361982 | 2166 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2167 | } |
2ec9a5e0 TT |
2168 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2169 | { | |
049412e3 | 2170 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2171 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2172 | } |
927aa2e7 JK |
2173 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2174 | { | |
2175 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2176 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2177 | } |
36586728 TT |
2178 | } |
2179 | ||
2bf3b79d SDJ |
2180 | /* Attempt to find a .dwz file (whose full path is represented by |
2181 | FILENAME) in all of the specified debug file directories provided. | |
2182 | ||
2183 | Return the equivalent gdb_bfd_ref_ptr of the .dwz file found, or | |
2184 | nullptr if it could not find anything. */ | |
2185 | ||
2186 | static gdb_bfd_ref_ptr | |
2187 | dwz_search_other_debugdirs (std::string &filename, bfd_byte *buildid, | |
2188 | size_t buildid_len) | |
2189 | { | |
2190 | /* Let's assume that the path represented by FILENAME has the | |
2191 | "/.dwz/" subpath in it. This is what (most) GNU/Linux | |
2192 | distributions do, anyway. */ | |
2193 | size_t dwz_pos = filename.find ("/.dwz/"); | |
2194 | ||
2195 | if (dwz_pos == std::string::npos) | |
2196 | return nullptr; | |
2197 | ||
2198 | /* This is an obvious assertion, but it's here more to educate | |
2199 | future readers of this code that FILENAME at DWZ_POS *must* | |
2200 | contain a directory separator. */ | |
2201 | gdb_assert (IS_DIR_SEPARATOR (filename[dwz_pos])); | |
2202 | ||
2203 | gdb_bfd_ref_ptr dwz_bfd; | |
2204 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec | |
2205 | = dirnames_to_char_ptr_vec (debug_file_directory); | |
2206 | ||
2207 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) | |
2208 | { | |
2209 | /* The idea is to iterate over the | |
2210 | debug file directories provided by the user and | |
2211 | replace the hard-coded path in the "filename" by each | |
2212 | debug-file-directory. | |
2213 | ||
2214 | For example, suppose that filename is: | |
2215 | ||
2216 | /usr/lib/debug/.dwz/foo.dwz | |
2217 | ||
2218 | And suppose that we have "$HOME/bar" as the | |
2219 | debug-file-directory. We would then adjust filename | |
2220 | to look like: | |
2221 | ||
2222 | $HOME/bar/.dwz/foo.dwz | |
2223 | ||
2224 | which would hopefully allow us to find the alt debug | |
2225 | file. */ | |
2226 | std::string ddir = debugdir.get (); | |
2227 | ||
2228 | if (ddir.empty ()) | |
2229 | continue; | |
2230 | ||
2231 | /* Make sure the current debug-file-directory ends with a | |
2232 | directory separator. This is needed because, if FILENAME | |
2233 | contains something like "/usr/lib/abcde/.dwz/foo.dwz" and | |
2234 | DDIR is "/usr/lib/abc", then could wrongfully skip it | |
2235 | below. */ | |
2236 | if (!IS_DIR_SEPARATOR (ddir.back ())) | |
2237 | ddir += SLASH_STRING; | |
2238 | ||
2239 | /* Check whether the beginning of FILENAME is DDIR. If it is, | |
2240 | then we are dealing with a file which we already attempted to | |
2241 | open before, so we just skip it and continue processing the | |
2242 | remaining debug file directories. */ | |
2243 | if (filename.size () > ddir.size () | |
2244 | && filename.compare (0, ddir.size (), ddir) == 0) | |
2245 | continue; | |
2246 | ||
2247 | /* Replace FILENAME's default debug-file-directory with | |
2248 | DDIR. */ | |
2249 | std::string new_filename = ddir + &filename[dwz_pos + 1]; | |
2250 | ||
2251 | dwz_bfd = gdb_bfd_open (new_filename.c_str (), gnutarget); | |
2252 | ||
2253 | if (dwz_bfd == nullptr) | |
2254 | continue; | |
2255 | ||
2256 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2257 | { | |
2258 | dwz_bfd.reset (nullptr); | |
2259 | continue; | |
2260 | } | |
2261 | ||
2262 | /* Found it. */ | |
2263 | break; | |
2264 | } | |
2265 | ||
2266 | return dwz_bfd; | |
2267 | } | |
2268 | ||
c4973306 | 2269 | /* See dwarf2read.h. */ |
36586728 | 2270 | |
c4973306 | 2271 | struct dwz_file * |
c3699833 | 2272 | dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd) |
36586728 | 2273 | { |
acd13123 | 2274 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2275 | size_t buildid_len; |
2276 | bfd_byte *buildid; | |
36586728 | 2277 | |
c3699833 SM |
2278 | if (per_bfd->dwz_file != NULL) |
2279 | return per_bfd->dwz_file.get (); | |
36586728 | 2280 | |
4db1a1dc | 2281 | bfd_set_error (bfd_error_no_error); |
791afaa2 | 2282 | gdb::unique_xmalloc_ptr<char> data |
c3699833 | 2283 | (bfd_get_alt_debug_link_info (per_bfd->obfd, |
791afaa2 | 2284 | &buildid_len_arg, &buildid)); |
4db1a1dc TT |
2285 | if (data == NULL) |
2286 | { | |
2287 | if (bfd_get_error () == bfd_error_no_error) | |
2288 | return NULL; | |
2289 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2290 | bfd_errmsg (bfd_get_error ())); | |
2291 | } | |
791afaa2 TT |
2292 | |
2293 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2294 | |
acd13123 TT |
2295 | buildid_len = (size_t) buildid_len_arg; |
2296 | ||
2bf3b79d | 2297 | std::string filename = data.get (); |
d721ba37 | 2298 | |
2bf3b79d | 2299 | if (!IS_ABSOLUTE_PATH (filename.c_str ())) |
36586728 | 2300 | { |
14278e1f | 2301 | gdb::unique_xmalloc_ptr<char> abs |
c3699833 | 2302 | = gdb_realpath (bfd_get_filename (per_bfd->obfd)); |
36586728 | 2303 | |
2bf3b79d | 2304 | filename = ldirname (abs.get ()) + SLASH_STRING + filename; |
36586728 TT |
2305 | } |
2306 | ||
dc294be5 TT |
2307 | /* First try the file name given in the section. If that doesn't |
2308 | work, try to use the build-id instead. */ | |
2bf3b79d | 2309 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename.c_str (), gnutarget)); |
dc294be5 | 2310 | if (dwz_bfd != NULL) |
36586728 | 2311 | { |
192b62ce | 2312 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2313 | dwz_bfd.reset (nullptr); |
36586728 TT |
2314 | } |
2315 | ||
dc294be5 TT |
2316 | if (dwz_bfd == NULL) |
2317 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2318 | ||
2bf3b79d SDJ |
2319 | if (dwz_bfd == nullptr) |
2320 | { | |
2321 | /* If the user has provided us with different | |
2322 | debug file directories, we can try them in order. */ | |
2323 | dwz_bfd = dwz_search_other_debugdirs (filename, buildid, buildid_len); | |
2324 | } | |
2325 | ||
0d79cdc4 AM |
2326 | if (dwz_bfd == nullptr) |
2327 | { | |
2328 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
c3699833 | 2329 | const char *origname = bfd_get_filename (per_bfd->obfd); |
0d79cdc4 AM |
2330 | |
2331 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2332 | buildid_len, | |
2333 | origname, | |
2334 | &alt_filename)); | |
2335 | ||
2336 | if (fd.get () >= 0) | |
2337 | { | |
2338 | /* File successfully retrieved from server. */ | |
ad80db5b | 2339 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget); |
0d79cdc4 AM |
2340 | |
2341 | if (dwz_bfd == nullptr) | |
2342 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2343 | alt_filename.get ()); | |
2344 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2345 | dwz_bfd.reset (nullptr); | |
2346 | } | |
2347 | } | |
2348 | ||
dc294be5 TT |
2349 | if (dwz_bfd == NULL) |
2350 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
c3699833 | 2351 | bfd_get_filename (per_bfd->obfd)); |
dc294be5 | 2352 | |
7ff8cb8c TT |
2353 | std::unique_ptr<struct dwz_file> result |
2354 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2355 | |
5bb6e9dd TT |
2356 | for (asection *sec : gdb_bfd_sections (result->dwz_bfd)) |
2357 | locate_dwz_sections (result->dwz_bfd.get (), sec, result.get ()); | |
36586728 | 2358 | |
c3699833 SM |
2359 | gdb_bfd_record_inclusion (per_bfd->obfd, result->dwz_bfd.get ()); |
2360 | per_bfd->dwz_file = std::move (result); | |
2361 | return per_bfd->dwz_file.get (); | |
36586728 | 2362 | } |
9291a0cd | 2363 | \f |
7b9f3c50 DE |
2364 | /* DWARF quick_symbols_functions support. */ |
2365 | ||
2366 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2367 | unique line tables, so we maintain a separate table of all .debug_line | |
2368 | derived entries to support the sharing. | |
2369 | All the quick functions need is the list of file names. We discard the | |
2370 | line_header when we're done and don't need to record it here. */ | |
2371 | struct quick_file_names | |
2372 | { | |
094b34ac DE |
2373 | /* The data used to construct the hash key. */ |
2374 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2375 | |
2376 | /* The number of entries in file_names, real_names. */ | |
2377 | unsigned int num_file_names; | |
2378 | ||
2379 | /* The file names from the line table, after being run through | |
2380 | file_full_name. */ | |
2381 | const char **file_names; | |
2382 | ||
2383 | /* The file names from the line table after being run through | |
2384 | gdb_realpath. These are computed lazily. */ | |
2385 | const char **real_names; | |
2386 | }; | |
2387 | ||
2388 | /* When using the index (and thus not using psymtabs), each CU has an | |
2389 | object of this type. This is used to hold information needed by | |
2390 | the various "quick" methods. */ | |
2391 | struct dwarf2_per_cu_quick_data | |
2392 | { | |
2393 | /* The file table. This can be NULL if there was no file table | |
2394 | or it's currently not read in. | |
5989a64e | 2395 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2396 | struct quick_file_names *file_names; |
2397 | ||
7b9f3c50 DE |
2398 | /* A temporary mark bit used when iterating over all CUs in |
2399 | expand_symtabs_matching. */ | |
2400 | unsigned int mark : 1; | |
2401 | ||
2402 | /* True if we've tried to read the file table and found there isn't one. | |
2403 | There will be no point in trying to read it again next time. */ | |
2404 | unsigned int no_file_data : 1; | |
2405 | }; | |
2406 | ||
094b34ac DE |
2407 | /* Utility hash function for a stmt_list_hash. */ |
2408 | ||
2409 | static hashval_t | |
2410 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2411 | { | |
2412 | hashval_t v = 0; | |
2413 | ||
2414 | if (stmt_list_hash->dwo_unit != NULL) | |
2415 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2416 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2417 | return v; |
2418 | } | |
2419 | ||
2420 | /* Utility equality function for a stmt_list_hash. */ | |
2421 | ||
2422 | static int | |
2423 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2424 | const struct stmt_list_hash *rhs) | |
2425 | { | |
2426 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2427 | return 0; | |
2428 | if (lhs->dwo_unit != NULL | |
2429 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2430 | return 0; | |
2431 | ||
9c541725 | 2432 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2433 | } |
2434 | ||
7b9f3c50 DE |
2435 | /* Hash function for a quick_file_names. */ |
2436 | ||
2437 | static hashval_t | |
2438 | hash_file_name_entry (const void *e) | |
2439 | { | |
9a3c8263 SM |
2440 | const struct quick_file_names *file_data |
2441 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2442 | |
094b34ac | 2443 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2444 | } |
2445 | ||
2446 | /* Equality function for a quick_file_names. */ | |
2447 | ||
2448 | static int | |
2449 | eq_file_name_entry (const void *a, const void *b) | |
2450 | { | |
9a3c8263 SM |
2451 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2452 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2453 | |
094b34ac | 2454 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2455 | } |
2456 | ||
2457 | /* Delete function for a quick_file_names. */ | |
2458 | ||
2459 | static void | |
2460 | delete_file_name_entry (void *e) | |
2461 | { | |
9a3c8263 | 2462 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2463 | int i; |
2464 | ||
2465 | for (i = 0; i < file_data->num_file_names; ++i) | |
2466 | { | |
2467 | xfree ((void*) file_data->file_names[i]); | |
2468 | if (file_data->real_names) | |
2469 | xfree ((void*) file_data->real_names[i]); | |
2470 | } | |
2471 | ||
45940949 TT |
2472 | /* The space for the struct itself lives on the obstack, so we don't |
2473 | free it here. */ | |
7b9f3c50 DE |
2474 | } |
2475 | ||
2476 | /* Create a quick_file_names hash table. */ | |
2477 | ||
5895093f | 2478 | static htab_up |
7b9f3c50 DE |
2479 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2480 | { | |
5895093f TT |
2481 | return htab_up (htab_create_alloc (nr_initial_entries, |
2482 | hash_file_name_entry, eq_file_name_entry, | |
2483 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2484 | } |
9291a0cd | 2485 | |
ab432490 SM |
2486 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2487 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2488 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2489 | |
1b555f17 | 2490 | static dwarf2_cu * |
ab432490 SM |
2491 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2492 | bool skip_partial) | |
918dd910 | 2493 | { |
3019eac3 | 2494 | if (per_cu->is_debug_types) |
ab432490 | 2495 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2496 | else |
4a636814 SM |
2497 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
2498 | skip_partial, language_minimal); | |
918dd910 | 2499 | |
7188ed02 SM |
2500 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2501 | if (cu == nullptr) | |
1b555f17 | 2502 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2503 | |
7188ed02 | 2504 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2505 | |
7188ed02 | 2506 | return cu; |
918dd910 JK |
2507 | } |
2508 | ||
1350c3b4 | 2509 | /* Read in the symbols for PER_CU in the context of PER_OBJFILE. */ |
2fdf6df6 | 2510 | |
9291a0cd | 2511 | static void |
97a1449a | 2512 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2513 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2514 | { |
f4dc4d17 DE |
2515 | /* Skip type_unit_groups, reading the type units they contain |
2516 | is handled elsewhere. */ | |
197400e8 | 2517 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2518 | return; |
2519 | ||
b303c6f6 AB |
2520 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2521 | the queue. After this point we're guaranteed to leave this function | |
2522 | with the dwarf queue empty. */ | |
bf6e5d01 | 2523 | dwarf2_queue_guard q_guard (per_objfile); |
9291a0cd | 2524 | |
976ca316 | 2525 | if (!per_objfile->symtab_set_p (per_cu)) |
95554aad | 2526 | { |
976ca316 SM |
2527 | queue_comp_unit (per_cu, per_objfile, language_minimal); |
2528 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
89e63ee4 DE |
2529 | |
2530 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2531 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2532 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2533 | if (!per_cu->is_debug_types | |
1b555f17 SM |
2534 | && cu != NULL |
2535 | && cu->dwo_unit != NULL | |
976ca316 SM |
2536 | && per_objfile->per_bfd->index_table != NULL |
2537 | && per_objfile->per_bfd->index_table->version <= 7 | |
89e63ee4 | 2538 | /* DWP files aren't supported yet. */ |
976ca316 | 2539 | && get_dwp_file (per_objfile) == NULL) |
1b555f17 | 2540 | queue_and_load_all_dwo_tus (cu); |
95554aad | 2541 | } |
9291a0cd | 2542 | |
976ca316 | 2543 | process_queue (per_objfile); |
9291a0cd TT |
2544 | |
2545 | /* Age the cache, releasing compilation units that have not | |
2546 | been used recently. */ | |
976ca316 | 2547 | per_objfile->age_comp_units (); |
9291a0cd TT |
2548 | } |
2549 | ||
97a1449a SM |
2550 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2551 | the per-objfile for which this symtab is instantiated. | |
2552 | ||
2553 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2554 | |
43f3e411 | 2555 | static struct compunit_symtab * |
97a1449a | 2556 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2557 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2558 | bool skip_partial) |
9291a0cd | 2559 | { |
976ca316 | 2560 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2561 | |
976ca316 | 2562 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2563 | { |
976ca316 | 2564 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2565 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2566 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2567 | process_cu_includes (per_objfile); | |
9291a0cd | 2568 | } |
f194fefb | 2569 | |
976ca316 | 2570 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2571 | } |
2572 | ||
ff4c9fec | 2573 | /* See declaration. */ |
f4dc4d17 | 2574 | |
ff4c9fec | 2575 | dwarf2_per_cu_data * |
5989a64e | 2576 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2577 | { |
b76e467d | 2578 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2579 | { |
b76e467d | 2580 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2581 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2582 | return &this->all_type_units[index]->per_cu; |
2583 | } | |
f4dc4d17 | 2584 | |
ff4c9fec SM |
2585 | return this->all_comp_units[index]; |
2586 | } | |
f4dc4d17 | 2587 | |
ff4c9fec | 2588 | /* See declaration. */ |
2fdf6df6 | 2589 | |
ff4c9fec | 2590 | dwarf2_per_cu_data * |
5989a64e | 2591 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2592 | { |
b76e467d | 2593 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2594 | |
ff4c9fec | 2595 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2596 | } |
2597 | ||
ff4c9fec | 2598 | /* See declaration. */ |
f4dc4d17 | 2599 | |
ff4c9fec | 2600 | signatured_type * |
5989a64e | 2601 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2602 | { |
b2bdb8cf | 2603 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2604 | |
ff4c9fec | 2605 | return this->all_type_units[index]; |
1fd400ff TT |
2606 | } |
2607 | ||
d3473f0c TT |
2608 | /* See read.h. */ |
2609 | ||
2610 | dwarf2_per_cu_data * | |
5989a64e | 2611 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2612 | { |
2613 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2614 | result->per_bfd = this; |
d3473f0c TT |
2615 | result->index = m_num_psymtabs++; |
2616 | return result; | |
2617 | } | |
2618 | ||
2619 | /* See read.h. */ | |
2620 | ||
2621 | signatured_type * | |
5989a64e | 2622 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2623 | { |
2624 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2625 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2626 | result->per_cu.index = m_num_psymtabs++; |
2627 | return result; | |
2628 | } | |
2629 | ||
168c9250 | 2630 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2631 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2632 | |
2633 | static dwarf2_per_cu_data * | |
168c9250 SM |
2634 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2635 | struct dwarf2_section_info *section, | |
2636 | int is_dwz, | |
2637 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2638 | { |
168c9250 | 2639 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2640 | the_cu->sect_off = sect_off; |
2641 | the_cu->length = length; | |
4b514bc8 | 2642 | the_cu->section = section; |
168c9250 | 2643 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2644 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2645 | the_cu->is_dwz = is_dwz; |
2646 | return the_cu; | |
2647 | } | |
2648 | ||
2ec9a5e0 TT |
2649 | /* A helper for create_cus_from_index that handles a given list of |
2650 | CUs. */ | |
2fdf6df6 | 2651 | |
74a0d9f6 | 2652 | static void |
168c9250 | 2653 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2654 | const gdb_byte *cu_list, offset_type n_elements, |
2655 | struct dwarf2_section_info *section, | |
b76e467d | 2656 | int is_dwz) |
9291a0cd | 2657 | { |
12359b5e | 2658 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2659 | { |
74a0d9f6 | 2660 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2661 | |
2662 | sect_offset sect_off | |
2663 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2664 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2665 | cu_list += 2 * 8; |
2666 | ||
b76e467d | 2667 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2668 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2669 | length); | |
2670 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2671 | } |
9291a0cd TT |
2672 | } |
2673 | ||
2ec9a5e0 | 2674 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2675 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2676 | |
74a0d9f6 | 2677 | static void |
168c9250 | 2678 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2679 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2680 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2681 | { | |
168c9250 SM |
2682 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2683 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2684 | |
168c9250 SM |
2685 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2686 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2687 | |
2688 | if (dwz_elements == 0) | |
74a0d9f6 | 2689 | return; |
2ec9a5e0 | 2690 | |
168c9250 SM |
2691 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2692 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2693 | &dwz->info, 1); |
2ec9a5e0 TT |
2694 | } |
2695 | ||
1fd400ff | 2696 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2697 | |
74a0d9f6 | 2698 | static void |
12359b5e | 2699 | create_signatured_type_table_from_index |
168c9250 SM |
2700 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2701 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2702 | { |
168c9250 SM |
2703 | gdb_assert (per_bfd->all_type_units.empty ()); |
2704 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2705 | |
298e9637 | 2706 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2707 | |
12359b5e | 2708 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2709 | { |
52dc124a | 2710 | struct signatured_type *sig_type; |
9c541725 | 2711 | ULONGEST signature; |
1fd400ff | 2712 | void **slot; |
9c541725 | 2713 | cu_offset type_offset_in_tu; |
1fd400ff | 2714 | |
74a0d9f6 | 2715 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2716 | sect_offset sect_off |
2717 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2718 | type_offset_in_tu | |
2719 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2720 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2721 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2722 | bytes += 3 * 8; | |
2723 | ||
168c9250 | 2724 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2725 | sig_type->signature = signature; |
9c541725 | 2726 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2727 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2728 | sig_type->per_cu.section = section; |
9c541725 | 2729 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2730 | sig_type->per_cu.v.quick |
168c9250 | 2731 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2732 | struct dwarf2_per_cu_quick_data); |
2733 | ||
b0b6a987 | 2734 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2735 | *slot = sig_type; |
1fd400ff | 2736 | |
168c9250 | 2737 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2738 | } |
2739 | ||
168c9250 | 2740 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2741 | } |
2742 | ||
927aa2e7 JK |
2743 | /* Create the signatured type hash table from .debug_names. */ |
2744 | ||
2745 | static void | |
2746 | create_signatured_type_table_from_debug_names | |
976ca316 | 2747 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2748 | const mapped_debug_names &map, |
2749 | struct dwarf2_section_info *section, | |
2750 | struct dwarf2_section_info *abbrev_section) | |
2751 | { | |
976ca316 | 2752 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2753 | |
96b79293 TT |
2754 | section->read (objfile); |
2755 | abbrev_section->read (objfile); | |
927aa2e7 | 2756 | |
976ca316 SM |
2757 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
2758 | per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2759 | |
298e9637 | 2760 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2761 | |
2762 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2763 | { | |
2764 | struct signatured_type *sig_type; | |
927aa2e7 | 2765 | void **slot; |
927aa2e7 JK |
2766 | |
2767 | sect_offset sect_off | |
2768 | = (sect_offset) (extract_unsigned_integer | |
2769 | (map.tu_table_reordered + i * map.offset_size, | |
2770 | map.offset_size, | |
2771 | map.dwarf5_byte_order)); | |
2772 | ||
2773 | comp_unit_head cu_header; | |
976ca316 | 2774 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2775 | abbrev_section, |
927aa2e7 JK |
2776 | section->buffer + to_underlying (sect_off), |
2777 | rcuh_kind::TYPE); | |
2778 | ||
976ca316 | 2779 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2780 | sig_type->signature = cu_header.signature; |
2781 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2782 | sig_type->per_cu.is_debug_types = 1; | |
2783 | sig_type->per_cu.section = section; | |
2784 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2785 | sig_type->per_cu.v.quick |
976ca316 | 2786 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2787 | struct dwarf2_per_cu_quick_data); |
2788 | ||
b0b6a987 | 2789 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2790 | *slot = sig_type; |
2791 | ||
976ca316 | 2792 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2793 | } |
2794 | ||
976ca316 | 2795 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2796 | } |
2797 | ||
9291a0cd TT |
2798 | /* Read the address map data from the mapped index, and use it to |
2799 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2800 | |
9291a0cd | 2801 | static void |
976ca316 | 2802 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2803 | struct mapped_index *index) |
9291a0cd | 2804 | { |
976ca316 | 2805 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 2806 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2807 | const gdb_byte *iter, *end; |
9291a0cd | 2808 | struct addrmap *mutable_map; |
9291a0cd TT |
2809 | CORE_ADDR baseaddr; |
2810 | ||
8268c778 PA |
2811 | auto_obstack temp_obstack; |
2812 | ||
9291a0cd TT |
2813 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2814 | ||
f00a2de2 PA |
2815 | iter = index->address_table.data (); |
2816 | end = iter + index->address_table.size (); | |
9291a0cd | 2817 | |
b3b3bada | 2818 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2819 | |
2820 | while (iter < end) | |
2821 | { | |
2822 | ULONGEST hi, lo, cu_index; | |
2823 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2824 | iter += 8; | |
2825 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2826 | iter += 8; | |
2827 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2828 | iter += 4; | |
f652bce2 | 2829 | |
24a55014 | 2830 | if (lo > hi) |
f652bce2 | 2831 | { |
b98664d3 | 2832 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2833 | hex_string (lo), hex_string (hi)); |
24a55014 | 2834 | continue; |
f652bce2 | 2835 | } |
24a55014 | 2836 | |
976ca316 | 2837 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2838 | { |
b98664d3 | 2839 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2840 | (unsigned) cu_index); |
24a55014 | 2841 | continue; |
f652bce2 | 2842 | } |
24a55014 | 2843 | |
79748972 TT |
2844 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2845 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2846 | addrmap_set_empty (mutable_map, lo, hi - 1, |
976ca316 | 2847 | per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2848 | } |
2849 | ||
d320c2b5 | 2850 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2851 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2852 | } |
2853 | ||
927aa2e7 JK |
2854 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2855 | populate the objfile's psymtabs_addrmap. */ | |
2856 | ||
2857 | static void | |
976ca316 | 2858 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2859 | struct dwarf2_section_info *section) |
2860 | { | |
976ca316 | 2861 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2862 | bfd *abfd = objfile->obfd; |
08feed99 | 2863 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2864 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2865 | |
2866 | auto_obstack temp_obstack; | |
2867 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2868 | ||
2869 | std::unordered_map<sect_offset, | |
2870 | dwarf2_per_cu_data *, | |
2871 | gdb::hash_enum<sect_offset>> | |
2872 | debug_info_offset_to_per_cu; | |
976ca316 | 2873 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2874 | { |
927aa2e7 JK |
2875 | const auto insertpair |
2876 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2877 | if (!insertpair.second) | |
2878 | { | |
2879 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2880 | "debug_info_offset %s, ignoring .debug_aranges."), |
2881 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2882 | return; |
2883 | } | |
2884 | } | |
2885 | ||
96b79293 | 2886 | section->read (objfile); |
927aa2e7 JK |
2887 | |
2888 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2889 | ||
2890 | const gdb_byte *addr = section->buffer; | |
2891 | ||
2892 | while (addr < section->buffer + section->size) | |
2893 | { | |
2894 | const gdb_byte *const entry_addr = addr; | |
2895 | unsigned int bytes_read; | |
2896 | ||
2897 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2898 | &bytes_read); | |
2899 | addr += bytes_read; | |
2900 | ||
2901 | const gdb_byte *const entry_end = addr + entry_length; | |
2902 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2903 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2904 | if (addr + entry_length > section->buffer + section->size) | |
2905 | { | |
47e3f474 | 2906 | warning (_("Section .debug_aranges in %s entry at offset %s " |
dda83cd7 | 2907 | "length %s exceeds section length %s, " |
927aa2e7 | 2908 | "ignoring .debug_aranges."), |
47e3f474 TV |
2909 | objfile_name (objfile), |
2910 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2911 | plongest (bytes_read + entry_length), |
2912 | pulongest (section->size)); | |
2913 | return; | |
2914 | } | |
2915 | ||
2916 | /* The version number. */ | |
2917 | const uint16_t version = read_2_bytes (abfd, addr); | |
2918 | addr += 2; | |
2919 | if (version != 2) | |
2920 | { | |
47e3f474 | 2921 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2922 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2923 | objfile_name (objfile), |
2924 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2925 | return; |
2926 | } | |
2927 | ||
2928 | const uint64_t debug_info_offset | |
2929 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2930 | addr += offset_size; | |
2931 | const auto per_cu_it | |
2932 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2933 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2934 | { | |
47e3f474 | 2935 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2936 | "debug_info_offset %s does not exists, " |
2937 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2938 | objfile_name (objfile), |
2939 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2940 | pulongest (debug_info_offset)); |
2941 | return; | |
2942 | } | |
2943 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2944 | ||
2945 | const uint8_t address_size = *addr++; | |
2946 | if (address_size < 1 || address_size > 8) | |
2947 | { | |
47e3f474 | 2948 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2949 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2950 | objfile_name (objfile), |
2951 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2952 | return; |
2953 | } | |
2954 | ||
2955 | const uint8_t segment_selector_size = *addr++; | |
2956 | if (segment_selector_size != 0) | |
2957 | { | |
47e3f474 | 2958 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2959 | "segment_selector_size %u is not supported, " |
2960 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2961 | objfile_name (objfile), |
2962 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2963 | segment_selector_size); |
2964 | return; | |
2965 | } | |
2966 | ||
2967 | /* Must pad to an alignment boundary that is twice the address | |
dda83cd7 SM |
2968 | size. It is undocumented by the DWARF standard but GCC does |
2969 | use it. */ | |
927aa2e7 JK |
2970 | for (size_t padding = ((-(addr - section->buffer)) |
2971 | & (2 * address_size - 1)); | |
dda83cd7 | 2972 | padding > 0; padding--) |
927aa2e7 JK |
2973 | if (*addr++ != 0) |
2974 | { | |
47e3f474 | 2975 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2976 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2977 | objfile_name (objfile), |
2978 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2979 | return; |
2980 | } | |
2981 | ||
2982 | for (;;) | |
2983 | { | |
2984 | if (addr + 2 * address_size > entry_end) | |
2985 | { | |
47e3f474 | 2986 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2987 | "address list is not properly terminated, " |
2988 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2989 | objfile_name (objfile), |
2990 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2991 | return; |
2992 | } | |
2993 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2994 | dwarf5_byte_order); | |
2995 | addr += address_size; | |
2996 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2997 | dwarf5_byte_order); | |
2998 | addr += address_size; | |
2999 | if (start == 0 && length == 0) | |
3000 | break; | |
976ca316 | 3001 | if (start == 0 && !per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
3002 | { |
3003 | /* Symbol was eliminated due to a COMDAT group. */ | |
3004 | continue; | |
3005 | } | |
3006 | ULONGEST end = start + length; | |
79748972 TT |
3007 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
3008 | - baseaddr); | |
3009 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
3010 | - baseaddr); | |
927aa2e7 JK |
3011 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
3012 | } | |
3013 | } | |
3014 | ||
d320c2b5 | 3015 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3016 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
3017 | } |
3018 | ||
9291a0cd TT |
3019 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3020 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3021 | constant pool and return true. If NAME cannot be found, return |
3022 | false. */ | |
2fdf6df6 | 3023 | |
109483d9 | 3024 | static bool |
9291a0cd TT |
3025 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3026 | offset_type **vec_out) | |
3027 | { | |
0cf03b49 | 3028 | offset_type hash; |
9291a0cd | 3029 | offset_type slot, step; |
559a7a62 | 3030 | int (*cmp) (const char *, const char *); |
9291a0cd | 3031 | |
791afaa2 | 3032 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3033 | if (current_language->la_language == language_cplus |
45280282 IB |
3034 | || current_language->la_language == language_fortran |
3035 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3036 | { |
3037 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3038 | not contain any. */ | |
a8719064 | 3039 | |
72998fb3 | 3040 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3041 | { |
109483d9 | 3042 | without_params = cp_remove_params (name); |
0cf03b49 | 3043 | |
72998fb3 | 3044 | if (without_params != NULL) |
791afaa2 | 3045 | name = without_params.get (); |
0cf03b49 JK |
3046 | } |
3047 | } | |
3048 | ||
559a7a62 | 3049 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3050 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3051 | simulate our NAME being searched is also lowercased. */ |
3052 | hash = mapped_index_string_hash ((index->version == 4 | |
dda83cd7 | 3053 | && case_sensitivity == case_sensitive_off |
559a7a62 JK |
3054 | ? 5 : index->version), |
3055 | name); | |
3056 | ||
f00a2de2 PA |
3057 | slot = hash & (index->symbol_table.size () - 1); |
3058 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3059 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3060 | |
3061 | for (;;) | |
3062 | { | |
9291a0cd | 3063 | const char *str; |
f00a2de2 PA |
3064 | |
3065 | const auto &bucket = index->symbol_table[slot]; | |
3066 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3067 | return false; |
9291a0cd | 3068 | |
f00a2de2 | 3069 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3070 | if (!cmp (name, str)) |
9291a0cd TT |
3071 | { |
3072 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3073 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3074 | return true; |
9291a0cd TT |
3075 | } |
3076 | ||
f00a2de2 | 3077 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3078 | } |
3079 | } | |
3080 | ||
4485a1c1 SM |
3081 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3082 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3083 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3084 | ok to use deprecated sections. |
3085 | ||
3086 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3087 | out parameters that are filled in with information about the CU and | |
3088 | TU lists in the section. | |
3089 | ||
4485a1c1 | 3090 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3091 | |
d33bc52e | 3092 | static bool |
3810f182 | 3093 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
3094 | bool deprecated_ok, |
3095 | gdb::array_view<const gdb_byte> buffer, | |
3096 | struct mapped_index *map, | |
3097 | const gdb_byte **cu_list, | |
3098 | offset_type *cu_list_elements, | |
3099 | const gdb_byte **types_list, | |
3100 | offset_type *types_list_elements) | |
3101 | { | |
3102 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3103 | |
9291a0cd | 3104 | /* Version check. */ |
4485a1c1 | 3105 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3106 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3107 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3108 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3109 | indices. */ |
831adc1f | 3110 | if (version < 4) |
481860b3 GB |
3111 | { |
3112 | static int warning_printed = 0; | |
3113 | if (!warning_printed) | |
3114 | { | |
3115 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3116 | filename); |
481860b3 GB |
3117 | warning_printed = 1; |
3118 | } | |
3119 | return 0; | |
3120 | } | |
3121 | /* Index version 4 uses a different hash function than index version | |
3122 | 5 and later. | |
3123 | ||
3124 | Versions earlier than 6 did not emit psymbols for inlined | |
3125 | functions. Using these files will cause GDB not to be able to | |
3126 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3127 | indices unless the user has done |
3128 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3129 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3130 | { |
3131 | static int warning_printed = 0; | |
3132 | if (!warning_printed) | |
3133 | { | |
e615022a DE |
3134 | warning (_("\ |
3135 | Skipping deprecated .gdb_index section in %s.\n\ | |
3136 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3137 | to use the section anyway."), | |
2ec9a5e0 | 3138 | filename); |
481860b3 GB |
3139 | warning_printed = 1; |
3140 | } | |
3141 | return 0; | |
3142 | } | |
796a7ff8 | 3143 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3144 | of the TU (for symbols coming from TUs), |
3145 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3146 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3147 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3148 | These are just performance bugs, and we can't distinguish gdb-generated | |
3149 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3150 | |
481860b3 | 3151 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3152 | longer backward compatible. */ |
796a7ff8 | 3153 | if (version > 8) |
594e8718 | 3154 | return 0; |
9291a0cd | 3155 | |
559a7a62 | 3156 | map->version = version; |
9291a0cd | 3157 | |
4485a1c1 | 3158 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3159 | |
4485a1c1 | 3160 | int i = 0; |
2ec9a5e0 TT |
3161 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3162 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3163 | / 8); | |
1fd400ff TT |
3164 | ++i; |
3165 | ||
2ec9a5e0 TT |
3166 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3167 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3168 | - MAYBE_SWAP (metadata[i])) | |
3169 | / 8); | |
987d643c | 3170 | ++i; |
1fd400ff | 3171 | |
f00a2de2 PA |
3172 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3173 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3174 | map->address_table | |
3175 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3176 | ++i; |
3177 | ||
f00a2de2 PA |
3178 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3179 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3180 | map->symbol_table | |
3181 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3182 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3183 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3184 | |
f00a2de2 | 3185 | ++i; |
f9d83a0b | 3186 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3187 | |
2ec9a5e0 TT |
3188 | return 1; |
3189 | } | |
3190 | ||
4485a1c1 SM |
3191 | /* Callback types for dwarf2_read_gdb_index. */ |
3192 | ||
3193 | typedef gdb::function_view | |
5989a64e | 3194 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3195 | get_gdb_index_contents_ftype; |
3196 | typedef gdb::function_view | |
3197 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3198 | get_gdb_index_contents_dwz_ftype; | |
3199 | ||
927aa2e7 | 3200 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3201 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3202 | ||
3203 | static int | |
4485a1c1 | 3204 | dwarf2_read_gdb_index |
976ca316 | 3205 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3206 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3207 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3208 | { |
2ec9a5e0 TT |
3209 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3210 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3211 | struct dwz_file *dwz; |
976ca316 | 3212 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3213 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3214 | |
4485a1c1 | 3215 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3216 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3217 | |
3218 | if (main_index_contents.empty ()) | |
3219 | return 0; | |
3220 | ||
3063847f | 3221 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3222 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3223 | use_deprecated_index_sections, |
3224 | main_index_contents, map.get (), &cu_list, | |
3225 | &cu_list_elements, &types_list, | |
3226 | &types_list_elements)) | |
2ec9a5e0 TT |
3227 | return 0; |
3228 | ||
0fefef59 | 3229 | /* Don't use the index if it's empty. */ |
3063847f | 3230 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3231 | return 0; |
3232 | ||
2ec9a5e0 TT |
3233 | /* If there is a .dwz file, read it so we can get its CU list as |
3234 | well. */ | |
f8c41851 | 3235 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3236 | if (dwz != NULL) |
2ec9a5e0 | 3237 | { |
2ec9a5e0 TT |
3238 | struct mapped_index dwz_map; |
3239 | const gdb_byte *dwz_types_ignore; | |
3240 | offset_type dwz_types_elements_ignore; | |
3241 | ||
4485a1c1 SM |
3242 | gdb::array_view<const gdb_byte> dwz_index_content |
3243 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3244 | ||
3245 | if (dwz_index_content.empty ()) | |
3246 | return 0; | |
3247 | ||
3810f182 | 3248 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3249 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3250 | &dwz_list, &dwz_list_elements, |
3251 | &dwz_types_ignore, | |
3252 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3253 | { |
3254 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3255 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3256 | return 0; |
3257 | } | |
3258 | } | |
3259 | ||
f8c41851 SM |
3260 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3261 | dwz_list_elements); | |
1fd400ff | 3262 | |
8b70b953 TT |
3263 | if (types_list_elements) |
3264 | { | |
8b70b953 TT |
3265 | /* We can only handle a single .debug_types when we have an |
3266 | index. */ | |
f8c41851 | 3267 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3268 | return 0; |
3269 | ||
f8c41851 | 3270 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3271 | |
f8c41851 | 3272 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3273 | types_list_elements); |
8b70b953 | 3274 | } |
9291a0cd | 3275 | |
976ca316 | 3276 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3277 | |
f8c41851 SM |
3278 | per_bfd->index_table = std::move (map); |
3279 | per_bfd->using_index = 1; | |
3280 | per_bfd->quick_file_names_table = | |
3281 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3282 | ||
3283 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent | |
3284 | objfiles using the same BFD. */ | |
3285 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
3286 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
9291a0cd TT |
3287 | |
3288 | return 1; | |
3289 | } | |
3290 | ||
dee91e82 | 3291 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3292 | |
dee91e82 DE |
3293 | static void |
3294 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3295 | const gdb_byte *info_ptr, |
3e225074 | 3296 | struct die_info *comp_unit_die) |
9291a0cd | 3297 | { |
dee91e82 | 3298 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3299 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3300 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3301 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3302 | struct attribute *attr; |
7b9f3c50 DE |
3303 | void **slot; |
3304 | struct quick_file_names *qfn; | |
9291a0cd | 3305 | |
0186c6a7 DE |
3306 | gdb_assert (! this_cu->is_debug_types); |
3307 | ||
07261596 TT |
3308 | /* Our callers never want to match partial units -- instead they |
3309 | will match the enclosing full CU. */ | |
3310 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3311 | { | |
3312 | this_cu->v.quick->no_file_data = 1; | |
3313 | return; | |
3314 | } | |
3315 | ||
0186c6a7 | 3316 | lh_cu = this_cu; |
7b9f3c50 | 3317 | slot = NULL; |
dee91e82 | 3318 | |
fff8551c | 3319 | line_header_up lh; |
9c541725 | 3320 | sect_offset line_offset {}; |
fff8551c | 3321 | |
dee91e82 | 3322 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
d4df075e | 3323 | if (attr != nullptr && attr->form_is_unsigned ()) |
9291a0cd | 3324 | { |
7b9f3c50 DE |
3325 | struct quick_file_names find_entry; |
3326 | ||
d4df075e | 3327 | line_offset = (sect_offset) attr->as_unsigned (); |
7b9f3c50 DE |
3328 | |
3329 | /* We may have already read in this line header (TU line header sharing). | |
3330 | If we have we're done. */ | |
094b34ac | 3331 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3332 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3333 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3334 | &find_entry, INSERT); |
3335 | if (*slot != NULL) | |
3336 | { | |
9a3c8263 | 3337 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3338 | return; |
7b9f3c50 DE |
3339 | } |
3340 | ||
3019eac3 | 3341 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3342 | } |
3343 | if (lh == NULL) | |
3344 | { | |
094b34ac | 3345 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3346 | return; |
9291a0cd TT |
3347 | } |
3348 | ||
976ca316 | 3349 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3350 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3351 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3352 | gdb_assert (slot != NULL); |
3353 | *slot = qfn; | |
9291a0cd | 3354 | |
d721ba37 | 3355 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3356 | |
aa391654 TT |
3357 | int offset = 0; |
3358 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3359 | ++offset; | |
3360 | ||
7ba99d21 | 3361 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3362 | qfn->file_names = |
976ca316 | 3363 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3364 | qfn->num_file_names); |
aa391654 TT |
3365 | if (offset != 0) |
3366 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3367 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3368 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3369 | fnd.comp_dir).release (); | |
7b9f3c50 | 3370 | qfn->real_names = NULL; |
9291a0cd | 3371 | |
094b34ac | 3372 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3373 | } |
3374 | ||
3375 | /* A helper for the "quick" functions which attempts to read the line | |
3376 | table for THIS_CU. */ | |
3377 | ||
3378 | static struct quick_file_names * | |
ab432490 SM |
3379 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3380 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3381 | { |
0186c6a7 DE |
3382 | /* This should never be called for TUs. */ |
3383 | gdb_assert (! this_cu->is_debug_types); | |
3384 | /* Nor type unit groups. */ | |
197400e8 | 3385 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3386 | |
dee91e82 DE |
3387 | if (this_cu->v.quick->file_names != NULL) |
3388 | return this_cu->v.quick->file_names; | |
3389 | /* If we know there is no line data, no point in looking again. */ | |
3390 | if (this_cu->v.quick->no_file_data) | |
3391 | return NULL; | |
3392 | ||
ab432490 | 3393 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3394 | if (!reader.dummy_p) |
3e225074 | 3395 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3396 | |
3397 | if (this_cu->v.quick->no_file_data) | |
3398 | return NULL; | |
3399 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3400 | } |
3401 | ||
3402 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3403 | real path for a given file name from the line table. */ |
2fdf6df6 | 3404 | |
9291a0cd | 3405 | static const char * |
976ca316 | 3406 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3407 | struct quick_file_names *qfn, int index) |
9291a0cd | 3408 | { |
7b9f3c50 | 3409 | if (qfn->real_names == NULL) |
976ca316 | 3410 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3411 | qfn->num_file_names, const char *); |
9291a0cd | 3412 | |
7b9f3c50 | 3413 | if (qfn->real_names[index] == NULL) |
14278e1f | 3414 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3415 | |
7b9f3c50 | 3416 | return qfn->real_names[index]; |
9291a0cd TT |
3417 | } |
3418 | ||
3419 | static struct symtab * | |
3420 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3421 | { | |
976ca316 SM |
3422 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3423 | dwarf2_per_cu_data *dwarf_cu = per_objfile->per_bfd->all_comp_units.back (); | |
3424 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); | |
ae2de4f8 | 3425 | |
43f3e411 DE |
3426 | if (cust == NULL) |
3427 | return NULL; | |
ed2dc618 | 3428 | |
43f3e411 | 3429 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3430 | } |
3431 | ||
7b9f3c50 DE |
3432 | /* Traversal function for dw2_forget_cached_source_info. */ |
3433 | ||
3434 | static int | |
3435 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3436 | { |
7b9f3c50 | 3437 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3438 | |
7b9f3c50 | 3439 | if (file_data->real_names) |
9291a0cd | 3440 | { |
7b9f3c50 | 3441 | int i; |
9291a0cd | 3442 | |
7b9f3c50 | 3443 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3444 | { |
7b9f3c50 DE |
3445 | xfree ((void*) file_data->real_names[i]); |
3446 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3447 | } |
3448 | } | |
7b9f3c50 DE |
3449 | |
3450 | return 1; | |
3451 | } | |
3452 | ||
3453 | static void | |
3454 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3455 | { | |
976ca316 | 3456 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3457 | |
976ca316 | 3458 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3459 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3460 | } |
3461 | ||
f8eba3c6 TT |
3462 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3463 | the symtabs and calls the iterator. */ | |
3464 | ||
3465 | static int | |
3466 | dw2_map_expand_apply (struct objfile *objfile, | |
3467 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3468 | const char *name, const char *real_path, |
14bc53a8 | 3469 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3470 | { |
43f3e411 | 3471 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3472 | |
3473 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3474 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3475 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3476 | return 0; |
3477 | ||
3478 | /* This may expand more than one symtab, and we want to iterate over | |
3479 | all of them. */ | |
97a1449a | 3480 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3481 | |
14bc53a8 PA |
3482 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3483 | last_made, callback); | |
f8eba3c6 TT |
3484 | } |
3485 | ||
3486 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3487 | ||
14bc53a8 PA |
3488 | static bool |
3489 | dw2_map_symtabs_matching_filename | |
3490 | (struct objfile *objfile, const char *name, const char *real_path, | |
3491 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3492 | { |
c011a4f4 | 3493 | const char *name_basename = lbasename (name); |
976ca316 | 3494 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 3495 | |
848e3e78 DE |
3496 | /* The rule is CUs specify all the files, including those used by |
3497 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3498 | |
976ca316 | 3499 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3500 | { |
3d7bb9d9 | 3501 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3502 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3503 | continue; |
3504 | ||
976ca316 | 3505 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3506 | if (file_data == NULL) |
9291a0cd TT |
3507 | continue; |
3508 | ||
b76e467d | 3509 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3510 | { |
7b9f3c50 | 3511 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3512 | const char *this_real_name; |
9291a0cd | 3513 | |
af529f8f | 3514 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3515 | { |
f5b95b50 | 3516 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3517 | callback)) |
3518 | return true; | |
288e77a7 | 3519 | continue; |
4aac40c8 | 3520 | } |
9291a0cd | 3521 | |
c011a4f4 DE |
3522 | /* Before we invoke realpath, which can get expensive when many |
3523 | files are involved, do a quick comparison of the basenames. */ | |
3524 | if (! basenames_may_differ | |
3525 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3526 | continue; | |
3527 | ||
976ca316 | 3528 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
da235a7c | 3529 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3530 | { |
da235a7c | 3531 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3532 | callback)) |
3533 | return true; | |
288e77a7 | 3534 | continue; |
da235a7c | 3535 | } |
9291a0cd | 3536 | |
da235a7c JK |
3537 | if (real_path != NULL) |
3538 | { | |
af529f8f JK |
3539 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3540 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3541 | if (this_real_name != NULL |
af529f8f | 3542 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3543 | { |
f5b95b50 | 3544 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3545 | callback)) |
3546 | return true; | |
288e77a7 | 3547 | continue; |
9291a0cd TT |
3548 | } |
3549 | } | |
3550 | } | |
3551 | } | |
3552 | ||
14bc53a8 | 3553 | return false; |
9291a0cd TT |
3554 | } |
3555 | ||
da51c347 DE |
3556 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3557 | ||
3558 | struct dw2_symtab_iterator | |
9291a0cd | 3559 | { |
ed2dc618 | 3560 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3561 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3562 | /* If set, only look for symbols that match that block. Valid values are |
3563 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3564 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3565 | /* The kind of symbol we're looking for. */ |
3566 | domain_enum domain; | |
3567 | /* The list of CUs from the index entry of the symbol, | |
3568 | or NULL if not found. */ | |
3569 | offset_type *vec; | |
3570 | /* The next element in VEC to look at. */ | |
3571 | int next; | |
3572 | /* The number of elements in VEC, or zero if there is no match. */ | |
3573 | int length; | |
8943b874 DE |
3574 | /* Have we seen a global version of the symbol? |
3575 | If so we can ignore all further global instances. | |
3576 | This is to work around gold/15646, inefficient gold-generated | |
3577 | indices. */ | |
3578 | int global_seen; | |
da51c347 | 3579 | }; |
9291a0cd | 3580 | |
e5f3ece2 | 3581 | /* Initialize the index symtab iterator ITER, common part. */ |
2fdf6df6 | 3582 | |
9291a0cd | 3583 | static void |
e5f3ece2 TV |
3584 | dw2_symtab_iter_init_common (struct dw2_symtab_iterator *iter, |
3585 | dwarf2_per_objfile *per_objfile, | |
3586 | gdb::optional<block_enum> block_index, | |
3587 | domain_enum domain) | |
da51c347 | 3588 | { |
976ca316 | 3589 | iter->per_objfile = per_objfile; |
da51c347 DE |
3590 | iter->block_index = block_index; |
3591 | iter->domain = domain; | |
3592 | iter->next = 0; | |
8943b874 | 3593 | iter->global_seen = 0; |
e5f3ece2 TV |
3594 | iter->vec = NULL; |
3595 | iter->length = 0; | |
3596 | } | |
da51c347 | 3597 | |
e5f3ece2 TV |
3598 | /* Initialize the index symtab iterator ITER, const char *NAME variant. */ |
3599 | ||
3600 | static void | |
3601 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3602 | dwarf2_per_objfile *per_objfile, | |
3603 | gdb::optional<block_enum> block_index, | |
3604 | domain_enum domain, | |
3605 | const char *name) | |
3606 | { | |
3607 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
ed2dc618 | 3608 | |
e5f3ece2 | 3609 | mapped_index *index = per_objfile->per_bfd->index_table.get (); |
ed2dc618 | 3610 | /* index is NULL if OBJF_READNOW. */ |
e5f3ece2 TV |
3611 | if (index == NULL) |
3612 | return; | |
3613 | ||
3614 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 | 3615 | iter->length = MAYBE_SWAP (*iter->vec); |
e5f3ece2 TV |
3616 | } |
3617 | ||
3618 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ | |
3619 | ||
3620 | static void | |
3621 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3622 | dwarf2_per_objfile *per_objfile, | |
3623 | gdb::optional<block_enum> block_index, | |
3624 | domain_enum domain, offset_type namei) | |
3625 | { | |
3626 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
3627 | ||
3628 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3629 | /* index is NULL if OBJF_READNOW. */ | |
3630 | if (index == NULL) | |
3631 | return; | |
3632 | ||
3633 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
3634 | const auto &bucket = index->symbol_table[namei]; | |
3635 | ||
3636 | iter->vec = (offset_type *) (index->constant_pool | |
3637 | + MAYBE_SWAP (bucket.vec)); | |
3638 | iter->length = MAYBE_SWAP (*iter->vec); | |
da51c347 DE |
3639 | } |
3640 | ||
3641 | /* Return the next matching CU or NULL if there are no more. */ | |
3642 | ||
3643 | static struct dwarf2_per_cu_data * | |
3644 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3645 | { | |
976ca316 | 3646 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3647 | |
da51c347 DE |
3648 | for ( ; iter->next < iter->length; ++iter->next) |
3649 | { | |
3650 | offset_type cu_index_and_attrs = | |
3651 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3652 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3653 | gdb_index_symbol_kind symbol_kind = |
3654 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3655 | /* Only check the symbol attributes if they're present. | |
3656 | Indices prior to version 7 don't record them, | |
3657 | and indices >= 7 may elide them for certain symbols | |
3658 | (gold does this). */ | |
3659 | int attrs_valid = | |
976ca316 | 3660 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3661 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3662 | ||
3190f0c6 | 3663 | /* Don't crash on bad data. */ |
976ca316 SM |
3664 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
3665 | + per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3666 | { |
b98664d3 | 3667 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3668 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3669 | continue; |
3670 | } | |
3671 | ||
976ca316 | 3672 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3673 | |
da51c347 | 3674 | /* Skip if already read in. */ |
976ca316 | 3675 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3676 | continue; |
3677 | ||
8943b874 DE |
3678 | /* Check static vs global. */ |
3679 | if (attrs_valid) | |
3680 | { | |
2b79f376 SM |
3681 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3682 | ||
3683 | if (iter->block_index.has_value ()) | |
3684 | { | |
3685 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3686 | ||
3687 | if (is_static != want_static) | |
3688 | continue; | |
3689 | } | |
3690 | ||
8943b874 | 3691 | /* Work around gold/15646. */ |
f030440d TV |
3692 | if (!is_static |
3693 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3694 | { | |
3695 | if (iter->global_seen) | |
3696 | continue; | |
3697 | ||
3698 | iter->global_seen = 1; | |
3699 | } | |
8943b874 | 3700 | } |
da51c347 DE |
3701 | |
3702 | /* Only check the symbol's kind if it has one. */ | |
3703 | if (attrs_valid) | |
3704 | { | |
3705 | switch (iter->domain) | |
3706 | { | |
3707 | case VAR_DOMAIN: | |
3708 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3709 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3710 | /* Some types are also in VAR_DOMAIN. */ | |
3711 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3712 | continue; | |
3713 | break; | |
3714 | case STRUCT_DOMAIN: | |
3715 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3716 | continue; | |
3717 | break; | |
3718 | case LABEL_DOMAIN: | |
3719 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3720 | continue; | |
3721 | break; | |
59c35742 AB |
3722 | case MODULE_DOMAIN: |
3723 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3724 | continue; | |
3725 | break; | |
da51c347 DE |
3726 | default: |
3727 | break; | |
3728 | } | |
3729 | } | |
3730 | ||
3731 | ++iter->next; | |
3732 | return per_cu; | |
3733 | } | |
3734 | ||
3735 | return NULL; | |
3736 | } | |
3737 | ||
43f3e411 | 3738 | static struct compunit_symtab * |
c7f839cb | 3739 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3740 | const char *name, domain_enum domain) |
9291a0cd | 3741 | { |
43f3e411 | 3742 | struct compunit_symtab *stab_best = NULL; |
976ca316 | 3743 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 3744 | |
b5ec771e PA |
3745 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3746 | ||
ed2dc618 SM |
3747 | struct dw2_symtab_iterator iter; |
3748 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3749 | |
976ca316 | 3750 | dw2_symtab_iter_init (&iter, per_objfile, block_index, domain, name); |
9291a0cd | 3751 | |
ed2dc618 SM |
3752 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3753 | { | |
3754 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 3755 | struct compunit_symtab *stab |
976ca316 | 3756 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
ed2dc618 | 3757 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3758 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3759 | |
ed2dc618 SM |
3760 | sym = block_find_symbol (block, name, domain, |
3761 | block_find_non_opaque_type_preferred, | |
3762 | &with_opaque); | |
b2e2f908 | 3763 | |
ed2dc618 SM |
3764 | /* Some caution must be observed with overloaded functions |
3765 | and methods, since the index will not contain any overload | |
3766 | information (but NAME might contain it). */ | |
da51c347 | 3767 | |
ed2dc618 SM |
3768 | if (sym != NULL |
3769 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3770 | return stab; | |
3771 | if (with_opaque != NULL | |
3772 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3773 | stab_best = stab; | |
da51c347 | 3774 | |
ed2dc618 | 3775 | /* Keep looking through other CUs. */ |
9291a0cd | 3776 | } |
9291a0cd | 3777 | |
da51c347 | 3778 | return stab_best; |
9291a0cd TT |
3779 | } |
3780 | ||
3781 | static void | |
3782 | dw2_print_stats (struct objfile *objfile) | |
3783 | { | |
976ca316 SM |
3784 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3785 | int total = (per_objfile->per_bfd->all_comp_units.size () | |
3786 | + per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3787 | int count = 0; |
9291a0cd | 3788 | |
ed2dc618 | 3789 | for (int i = 0; i < total; ++i) |
9291a0cd | 3790 | { |
976ca316 | 3791 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3792 | |
976ca316 | 3793 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3794 | ++count; |
3795 | } | |
e4a48d9d | 3796 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3797 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3798 | } | |
3799 | ||
779bd270 DE |
3800 | /* This dumps minimal information about the index. |
3801 | It is called via "mt print objfiles". | |
3802 | One use is to verify .gdb_index has been loaded by the | |
3803 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3804 | ||
9291a0cd TT |
3805 | static void |
3806 | dw2_dump (struct objfile *objfile) | |
3807 | { | |
976ca316 | 3808 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3809 | |
976ca316 | 3810 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3811 | printf_filtered (".gdb_index:"); |
976ca316 | 3812 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3813 | { |
3814 | printf_filtered (" version %d\n", | |
976ca316 | 3815 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3816 | } |
3817 | else | |
3818 | printf_filtered (" faked for \"readnow\"\n"); | |
3819 | printf_filtered ("\n"); | |
9291a0cd TT |
3820 | } |
3821 | ||
9291a0cd TT |
3822 | static void |
3823 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3824 | const char *func_name) | |
3825 | { | |
976ca316 | 3826 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
da51c347 | 3827 | |
ed2dc618 SM |
3828 | struct dw2_symtab_iterator iter; |
3829 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3830 | |
976ca316 | 3831 | dw2_symtab_iter_init (&iter, per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3832 | |
ed2dc618 | 3833 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3834 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
da51c347 | 3835 | |
9291a0cd TT |
3836 | } |
3837 | ||
3838 | static void | |
3839 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3840 | { | |
976ca316 SM |
3841 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3842 | int total_units = (per_objfile->per_bfd->all_comp_units.size () | |
3843 | + per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3844 | |
ed2dc618 | 3845 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3846 | { |
976ca316 | 3847 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3848 | |
58f0c718 TT |
3849 | /* We don't want to directly expand a partial CU, because if we |
3850 | read it with the wrong language, then assertion failures can | |
3851 | be triggered later on. See PR symtab/23010. So, tell | |
3852 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3853 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3854 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3855 | } |
3856 | } | |
3857 | ||
3858 | static void | |
652a8996 JK |
3859 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3860 | const char *fullname) | |
9291a0cd | 3861 | { |
976ca316 | 3862 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
d4637a04 DE |
3863 | |
3864 | /* We don't need to consider type units here. | |
3865 | This is only called for examining code, e.g. expand_line_sal. | |
3866 | There can be an order of magnitude (or more) more type units | |
3867 | than comp units, and we avoid them if we can. */ | |
3868 | ||
976ca316 | 3869 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3870 | { |
3d7bb9d9 | 3871 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3872 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3873 | continue; |
3874 | ||
976ca316 | 3875 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3876 | if (file_data == NULL) |
9291a0cd TT |
3877 | continue; |
3878 | ||
b76e467d | 3879 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3880 | { |
652a8996 JK |
3881 | const char *this_fullname = file_data->file_names[j]; |
3882 | ||
3883 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3884 | { |
976ca316 | 3885 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
9291a0cd TT |
3886 | break; |
3887 | } | |
3888 | } | |
3889 | } | |
3890 | } | |
3891 | ||
9a0bacfb TV |
3892 | static void |
3893 | dw2_expand_symtabs_matching_symbol | |
3894 | (mapped_index_base &index, | |
3895 | const lookup_name_info &lookup_name_in, | |
3896 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3897 | enum search_domain kind, | |
fcf23d5b SM |
3898 | gdb::function_view<bool (offset_type)> match_callback, |
3899 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb TV |
3900 | |
3901 | static void | |
3902 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3903 | (dwarf2_per_cu_data *per_cu, |
3904 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3905 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3906 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3907 | ||
9291a0cd | 3908 | static void |
199b4314 TT |
3909 | dw2_map_matching_symbols |
3910 | (struct objfile *objfile, | |
b054970d | 3911 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3912 | int global, |
3913 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3914 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3915 | { |
1aa98955 | 3916 | /* Used for Ada. */ |
976ca316 | 3917 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3918 | |
9a0bacfb TV |
3919 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3920 | ||
976ca316 | 3921 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3922 | { |
976ca316 | 3923 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3924 | |
9a0bacfb TV |
3925 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3926 | auto matcher = [&] (const char *symname) | |
3927 | { | |
3928 | if (ordered_compare == nullptr) | |
3929 | return true; | |
3930 | return ordered_compare (symname, match_name) == 0; | |
3931 | }; | |
3932 | ||
3933 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3934 | [&] (offset_type namei) | |
3935 | { | |
3936 | struct dw2_symtab_iterator iter; | |
3937 | struct dwarf2_per_cu_data *per_cu; | |
3938 | ||
976ca316 | 3939 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3940 | namei); |
9a0bacfb | 3941 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3942 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3943 | nullptr); |
9a0bacfb | 3944 | return true; |
976ca316 | 3945 | }, per_objfile); |
9a0bacfb TV |
3946 | } |
3947 | else | |
3948 | { | |
3949 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3950 | proceed assuming all symtabs have been read in. */ | |
3951 | } | |
1aa98955 TV |
3952 | |
3953 | for (compunit_symtab *cust : objfile->compunits ()) | |
3954 | { | |
3955 | const struct block *block; | |
3956 | ||
3957 | if (cust == NULL) | |
3958 | continue; | |
3959 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3960 | if (!iterate_over_symbols_terminated (block, name, | |
3961 | domain, callback)) | |
3962 | return; | |
3963 | } | |
9291a0cd TT |
3964 | } |
3965 | ||
e1ef7d7a PA |
3966 | /* Starting from a search name, return the string that finds the upper |
3967 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3968 | list. Returns the empty string to indicate that the upper bound is | |
3969 | the end of the list. */ | |
3970 | ||
3971 | static std::string | |
3972 | make_sort_after_prefix_name (const char *search_name) | |
3973 | { | |
3974 | /* When looking to complete "func", we find the upper bound of all | |
3975 | symbols that start with "func" by looking for where we'd insert | |
3976 | the closest string that would follow "func" in lexicographical | |
3977 | order. Usually, that's "func"-with-last-character-incremented, | |
3978 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3979 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3980 | Especially mind the 0xff character, which is a valid character in | |
3981 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3982 | rule out compilers allowing it in identifiers. Note that | |
3983 | conveniently, strcmp/strcasecmp are specified to compare | |
3984 | characters interpreted as unsigned char. So what we do is treat | |
3985 | the whole string as a base 256 number composed of a sequence of | |
3986 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3987 | to 0, and carries 1 to the following more-significant position. | |
3988 | If the very first character in SEARCH_NAME ends up incremented | |
3989 | and carries/overflows, then the upper bound is the end of the | |
3990 | list. The string after the empty string is also the empty | |
3991 | string. | |
3992 | ||
3993 | Some examples of this operation: | |
3994 | ||
3995 | SEARCH_NAME => "+1" RESULT | |
3996 | ||
3997 | "abc" => "abd" | |
3998 | "ab\xff" => "ac" | |
3999 | "\xff" "a" "\xff" => "\xff" "b" | |
4000 | "\xff" => "" | |
4001 | "\xff\xff" => "" | |
4002 | "" => "" | |
4003 | ||
4004 | Then, with these symbols for example: | |
4005 | ||
4006 | func | |
4007 | func1 | |
4008 | fund | |
4009 | ||
4010 | completing "func" looks for symbols between "func" and | |
4011 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4012 | which finds "func" and "func1", but not "fund". | |
4013 | ||
4014 | And with: | |
4015 | ||
4016 | funcÿ (Latin1 'ÿ' [0xff]) | |
4017 | funcÿ1 | |
4018 | fund | |
4019 | ||
4020 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4021 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4022 | ||
4023 | And with: | |
4024 | ||
4025 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4026 | ÿÿ1 | |
4027 | ||
4028 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4029 | the end of the list. | |
4030 | */ | |
4031 | std::string after = search_name; | |
4032 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4033 | after.pop_back (); | |
4034 | if (!after.empty ()) | |
4035 | after.back () = (unsigned char) after.back () + 1; | |
4036 | return after; | |
4037 | } | |
4038 | ||
5c58de74 | 4039 | /* See declaration. */ |
61d96d7e | 4040 | |
5c58de74 PA |
4041 | std::pair<std::vector<name_component>::const_iterator, |
4042 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4043 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
4044 | (const lookup_name_info &lookup_name_without_params, language lang, |
4045 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 4046 | { |
5c58de74 PA |
4047 | auto *name_cmp |
4048 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 4049 | |
3b00ef10 | 4050 | const char *lang_name |
e0802d59 | 4051 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 4052 | |
3f563c84 PA |
4053 | /* Comparison function object for lower_bound that matches against a |
4054 | given symbol name. */ | |
4055 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4056 | const char *name) | |
4057 | { | |
fcf23d5b | 4058 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
4059 | const char *elem_name = elem_qualified + elem.name_offset; |
4060 | return name_cmp (elem_name, name) < 0; | |
4061 | }; | |
4062 | ||
4063 | /* Comparison function object for upper_bound that matches against a | |
4064 | given symbol name. */ | |
4065 | auto lookup_compare_upper = [&] (const char *name, | |
4066 | const name_component &elem) | |
4067 | { | |
fcf23d5b | 4068 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
4069 | const char *elem_name = elem_qualified + elem.name_offset; |
4070 | return name_cmp (name, elem_name) < 0; | |
4071 | }; | |
4072 | ||
5c58de74 PA |
4073 | auto begin = this->name_components.begin (); |
4074 | auto end = this->name_components.end (); | |
3f563c84 PA |
4075 | |
4076 | /* Find the lower bound. */ | |
4077 | auto lower = [&] () | |
4078 | { | |
3b00ef10 | 4079 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
4080 | return begin; |
4081 | else | |
3b00ef10 | 4082 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
4083 | } (); |
4084 | ||
4085 | /* Find the upper bound. */ | |
4086 | auto upper = [&] () | |
4087 | { | |
5c58de74 | 4088 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4089 | { |
e1ef7d7a PA |
4090 | /* In completion mode, we want UPPER to point past all |
4091 | symbols names that have the same prefix. I.e., with | |
4092 | these symbols, and completing "func": | |
4093 | ||
4094 | function << lower bound | |
4095 | function1 | |
4096 | other_function << upper bound | |
4097 | ||
4098 | We find the upper bound by looking for the insertion | |
4099 | point of "func"-with-last-character-incremented, | |
4100 | i.e. "fund". */ | |
3b00ef10 | 4101 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 4102 | if (after.empty ()) |
3f563c84 | 4103 | return end; |
e6b2f5ef PA |
4104 | return std::lower_bound (lower, end, after.c_str (), |
4105 | lookup_compare_lower); | |
3f563c84 PA |
4106 | } |
4107 | else | |
3b00ef10 | 4108 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4109 | } (); |
4110 | ||
5c58de74 PA |
4111 | return {lower, upper}; |
4112 | } | |
4113 | ||
4114 | /* See declaration. */ | |
4115 | ||
4116 | void | |
fcf23d5b | 4117 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
4118 | { |
4119 | if (!this->name_components.empty ()) | |
4120 | return; | |
4121 | ||
4122 | this->name_components_casing = case_sensitivity; | |
4123 | auto *name_cmp | |
4124 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4125 | ||
4126 | /* The code below only knows how to break apart components of C++ | |
4127 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4128 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4129 | auto count = this->symbol_name_count (); |
4130 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4131 | { |
44ed8f3e | 4132 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4133 | continue; |
4134 | ||
fcf23d5b | 4135 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
4136 | |
4137 | /* Add each name component to the name component table. */ | |
4138 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4139 | |
4140 | if (strstr (name, "::") != nullptr) | |
4141 | { | |
4142 | for (unsigned int current_len = cp_find_first_component (name); | |
4143 | name[current_len] != '\0'; | |
4144 | current_len += cp_find_first_component (name + current_len)) | |
4145 | { | |
4146 | gdb_assert (name[current_len] == ':'); | |
4147 | this->name_components.push_back ({previous_len, idx}); | |
4148 | /* Skip the '::'. */ | |
4149 | current_len += 2; | |
4150 | previous_len = current_len; | |
4151 | } | |
4152 | } | |
4153 | else | |
5c58de74 | 4154 | { |
3b00ef10 TT |
4155 | /* Handle the Ada encoded (aka mangled) form here. */ |
4156 | for (const char *iter = strstr (name, "__"); | |
4157 | iter != nullptr; | |
4158 | iter = strstr (iter, "__")) | |
4159 | { | |
4160 | this->name_components.push_back ({previous_len, idx}); | |
4161 | iter += 2; | |
4162 | previous_len = iter - name; | |
4163 | } | |
5c58de74 | 4164 | } |
3b00ef10 | 4165 | |
5c58de74 PA |
4166 | this->name_components.push_back ({previous_len, idx}); |
4167 | } | |
4168 | ||
4169 | /* Sort name_components elements by name. */ | |
4170 | auto name_comp_compare = [&] (const name_component &left, | |
4171 | const name_component &right) | |
4172 | { | |
fcf23d5b SM |
4173 | const char *left_qualified |
4174 | = this->symbol_name_at (left.idx, per_objfile); | |
4175 | const char *right_qualified | |
4176 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
4177 | |
4178 | const char *left_name = left_qualified + left.name_offset; | |
4179 | const char *right_name = right_qualified + right.name_offset; | |
4180 | ||
4181 | return name_cmp (left_name, right_name) < 0; | |
4182 | }; | |
4183 | ||
4184 | std::sort (this->name_components.begin (), | |
4185 | this->name_components.end (), | |
4186 | name_comp_compare); | |
4187 | } | |
4188 | ||
4189 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4190 | mapped_index_base instead of the containing objfile. This is split |
4191 | to a separate function in order to be able to unit test the | |
4192 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4193 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4194 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4195 | |
4196 | static void | |
4197 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4198 | (mapped_index_base &index, |
5c58de74 PA |
4199 | const lookup_name_info &lookup_name_in, |
4200 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4201 | enum search_domain kind, | |
fcf23d5b SM |
4202 | gdb::function_view<bool (offset_type)> match_callback, |
4203 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4204 | { |
4205 | lookup_name_info lookup_name_without_params | |
4206 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4207 | |
4208 | /* Build the symbol name component sorted vector, if we haven't | |
4209 | yet. */ | |
fcf23d5b | 4210 | index.build_name_components (per_objfile); |
5c58de74 | 4211 | |
3f563c84 PA |
4212 | /* The same symbol may appear more than once in the range though. |
4213 | E.g., if we're looking for symbols that complete "w", and we have | |
4214 | a symbol named "w1::w2", we'll find the two name components for | |
4215 | that same symbol in the range. To be sure we only call the | |
4216 | callback once per symbol, we first collect the symbol name | |
4217 | indexes that matched in a temporary vector and ignore | |
4218 | duplicates. */ | |
4219 | std::vector<offset_type> matches; | |
3f563c84 | 4220 | |
3b00ef10 TT |
4221 | struct name_and_matcher |
4222 | { | |
4223 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4224 | const char *name; |
3b00ef10 TT |
4225 | |
4226 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4227 | { |
ecc6c606 | 4228 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4229 | } |
4230 | }; | |
4231 | ||
4232 | /* A vector holding all the different symbol name matchers, for all | |
4233 | languages. */ | |
4234 | std::vector<name_and_matcher> matchers; | |
4235 | ||
4236 | for (int i = 0; i < nr_languages; i++) | |
4237 | { | |
4238 | enum language lang_e = (enum language) i; | |
4239 | ||
4240 | const language_defn *lang = language_def (lang_e); | |
4241 | symbol_name_matcher_ftype *name_matcher | |
c9debfb9 | 4242 | = lang->get_symbol_name_matcher (lookup_name_without_params); |
3f563c84 | 4243 | |
3b00ef10 | 4244 | name_and_matcher key { |
dda83cd7 | 4245 | name_matcher, |
3b00ef10 TT |
4246 | lookup_name_without_params.language_lookup_name (lang_e) |
4247 | }; | |
4248 | ||
4249 | /* Don't insert the same comparison routine more than once. | |
4250 | Note that we do this linear walk. This is not a problem in | |
4251 | practice because the number of supported languages is | |
4252 | low. */ | |
4253 | if (std::find (matchers.begin (), matchers.end (), key) | |
4254 | != matchers.end ()) | |
9291a0cd | 4255 | continue; |
3b00ef10 TT |
4256 | matchers.push_back (std::move (key)); |
4257 | ||
4258 | auto bounds | |
4259 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 4260 | lang_e, per_objfile); |
3b00ef10 TT |
4261 | |
4262 | /* Now for each symbol name in range, check to see if we have a name | |
4263 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4264 | ||
4265 | for (; bounds.first != bounds.second; ++bounds.first) | |
4266 | { | |
fcf23d5b SM |
4267 | const char *qualified |
4268 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
4269 | |
4270 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4271 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4272 | continue; | |
9291a0cd | 4273 | |
3b00ef10 TT |
4274 | matches.push_back (bounds.first->idx); |
4275 | } | |
3f563c84 PA |
4276 | } |
4277 | ||
4278 | std::sort (matches.begin (), matches.end ()); | |
4279 | ||
4280 | /* Finally call the callback, once per match. */ | |
4281 | ULONGEST prev = -1; | |
4282 | for (offset_type idx : matches) | |
4283 | { | |
4284 | if (prev != idx) | |
4285 | { | |
3b00ef10 TT |
4286 | if (!match_callback (idx)) |
4287 | break; | |
3f563c84 PA |
4288 | prev = idx; |
4289 | } | |
4290 | } | |
4291 | ||
4292 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4293 | (offset_type)-1 are both possible values. */ | |
4294 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4295 | } | |
4296 | ||
c62446b1 PA |
4297 | #if GDB_SELF_TEST |
4298 | ||
4299 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4300 | ||
a3c5fafd PA |
4301 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4302 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4303 | mapped_index_base interface. Builds an index from the symbol list | |
4304 | passed as parameter to the constructor. */ | |
4305 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4306 | { |
4307 | public: | |
a3c5fafd PA |
4308 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4309 | : m_symbol_table (symbols) | |
c62446b1 PA |
4310 | {} |
4311 | ||
a3c5fafd | 4312 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4313 | |
a3c5fafd | 4314 | /* Return the number of names in the symbol table. */ |
632e107b | 4315 | size_t symbol_name_count () const override |
c62446b1 | 4316 | { |
a3c5fafd | 4317 | return m_symbol_table.size (); |
c62446b1 PA |
4318 | } |
4319 | ||
a3c5fafd | 4320 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
4321 | const char *symbol_name_at |
4322 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
4323 | { |
4324 | return m_symbol_table[idx]; | |
4325 | } | |
c62446b1 | 4326 | |
a3c5fafd PA |
4327 | private: |
4328 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4329 | }; |
4330 | ||
4331 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4332 | string, to pass to print routines. */ | |
4333 | ||
4334 | static const char * | |
4335 | string_or_null (const char *str) | |
4336 | { | |
4337 | return str != NULL ? str : "<null>"; | |
4338 | } | |
4339 | ||
4340 | /* Check if a lookup_name_info built from | |
4341 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4342 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4343 | matching order. If no match expected, then an empty list is | |
4344 | specified. Returns true on success. On failure prints a warning | |
4345 | indicating the file:line that failed, and returns false. */ | |
4346 | ||
4347 | static bool | |
4348 | check_match (const char *file, int line, | |
4349 | mock_mapped_index &mock_index, | |
4350 | const char *name, symbol_name_match_type match_type, | |
4351 | bool completion_mode, | |
fcf23d5b SM |
4352 | std::initializer_list<const char *> expected_list, |
4353 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4354 | { |
4355 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4356 | ||
4357 | bool matched = true; | |
4358 | ||
4359 | auto mismatch = [&] (const char *expected_str, | |
4360 | const char *got) | |
4361 | { | |
4362 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4363 | "expected=\"%s\", got=\"%s\"\n"), | |
4364 | file, line, | |
4365 | (match_type == symbol_name_match_type::FULL | |
4366 | ? "FULL" : "WILD"), | |
4367 | name, string_or_null (expected_str), string_or_null (got)); | |
4368 | matched = false; | |
4369 | }; | |
4370 | ||
4371 | auto expected_it = expected_list.begin (); | |
4372 | auto expected_end = expected_list.end (); | |
4373 | ||
a3c5fafd | 4374 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4375 | NULL, ALL_DOMAIN, |
4376 | [&] (offset_type idx) | |
4377 | { | |
fcf23d5b | 4378 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4379 | const char *expected_str |
4380 | = expected_it == expected_end ? NULL : *expected_it++; | |
4381 | ||
4382 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4383 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4384 | return true; |
fcf23d5b | 4385 | }, per_objfile); |
c62446b1 PA |
4386 | |
4387 | const char *expected_str | |
4388 | = expected_it == expected_end ? NULL : *expected_it++; | |
4389 | if (expected_str != NULL) | |
4390 | mismatch (expected_str, NULL); | |
4391 | ||
4392 | return matched; | |
4393 | } | |
4394 | ||
4395 | /* The symbols added to the mock mapped_index for testing (in | |
4396 | canonical form). */ | |
4397 | static const char *test_symbols[] = { | |
4398 | "function", | |
4399 | "std::bar", | |
4400 | "std::zfunction", | |
4401 | "std::zfunction2", | |
4402 | "w1::w2", | |
4403 | "ns::foo<char*>", | |
4404 | "ns::foo<int>", | |
4405 | "ns::foo<long>", | |
a20714ff PA |
4406 | "ns2::tmpl<int>::foo2", |
4407 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4408 | |
e1ef7d7a PA |
4409 | /* These are used to check that the increment-last-char in the |
4410 | matching algorithm for completion doesn't match "t1_fund" when | |
4411 | completing "t1_func". */ | |
4412 | "t1_func", | |
4413 | "t1_func1", | |
4414 | "t1_fund", | |
4415 | "t1_fund1", | |
4416 | ||
4417 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4418 | cp-name-parser understands this as a single identifier ("função" | |
4419 | is "function" in PT). */ | |
4420 | u8"u8função", | |
4421 | ||
4422 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4423 | "yfunc\377", | |
4424 | ||
4425 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4426 | "\377", | |
4427 | "\377\377123", | |
4428 | ||
c62446b1 PA |
4429 | /* A name with all sorts of complications. Starts with "z" to make |
4430 | it easier for the completion tests below. */ | |
4431 | #define Z_SYM_NAME \ | |
4432 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4433 | "::tuple<(anonymous namespace)::ui*, " \ | |
4434 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4435 | ||
4436 | Z_SYM_NAME | |
4437 | }; | |
4438 | ||
a3c5fafd PA |
4439 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4440 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4441 | in completion mode. */ | |
5c58de74 PA |
4442 | |
4443 | static bool | |
a3c5fafd | 4444 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4445 | const char *search_name, |
fcf23d5b SM |
4446 | gdb::array_view<const char *> expected_syms, |
4447 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4448 | { |
4449 | lookup_name_info lookup_name (search_name, | |
4450 | symbol_name_match_type::FULL, true); | |
4451 | ||
3b00ef10 | 4452 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4453 | language_cplus, |
4454 | per_objfile); | |
5c58de74 PA |
4455 | |
4456 | size_t distance = std::distance (bounds.first, bounds.second); | |
4457 | if (distance != expected_syms.size ()) | |
4458 | return false; | |
4459 | ||
4460 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4461 | { | |
4462 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4463 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4464 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4465 | return false; | |
4466 | } | |
4467 | ||
4468 | return true; | |
4469 | } | |
4470 | ||
4471 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4472 | method. */ | |
4473 | ||
c62446b1 | 4474 | static void |
5c58de74 PA |
4475 | test_mapped_index_find_name_component_bounds () |
4476 | { | |
4477 | mock_mapped_index mock_index (test_symbols); | |
4478 | ||
fcf23d5b | 4479 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4480 | |
4481 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4482 | method in completion mode. */ | |
4483 | { | |
4484 | static const char *expected_syms[] = { | |
4485 | "t1_func", | |
4486 | "t1_func1", | |
5c58de74 PA |
4487 | }; |
4488 | ||
fcf23d5b SM |
4489 | SELF_CHECK (check_find_bounds_finds |
4490 | (mock_index, "t1_func", expected_syms, | |
4491 | NULL /* per_objfile */)); | |
5c58de74 PA |
4492 | } |
4493 | ||
4494 | /* Check that the increment-last-char in the name matching algorithm | |
4495 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4496 | { | |
4497 | static const char *expected_syms1[] = { | |
4498 | "\377", | |
4499 | "\377\377123", | |
4500 | }; | |
fcf23d5b SM |
4501 | SELF_CHECK (check_find_bounds_finds |
4502 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4503 | |
4504 | static const char *expected_syms2[] = { | |
4505 | "\377\377123", | |
4506 | }; | |
fcf23d5b SM |
4507 | SELF_CHECK (check_find_bounds_finds |
4508 | (mock_index, "\377\377", expected_syms2, | |
4509 | NULL /* per_objfile */)); | |
5c58de74 PA |
4510 | } |
4511 | } | |
4512 | ||
4513 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4514 | ||
4515 | static void | |
4516 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4517 | { |
4518 | mock_mapped_index mock_index (test_symbols); | |
4519 | ||
4520 | /* We let all tests run until the end even if some fails, for debug | |
4521 | convenience. */ | |
4522 | bool any_mismatch = false; | |
4523 | ||
4524 | /* Create the expected symbols list (an initializer_list). Needed | |
4525 | because lists have commas, and we need to pass them to CHECK, | |
4526 | which is a macro. */ | |
4527 | #define EXPECT(...) { __VA_ARGS__ } | |
4528 | ||
4529 | /* Wrapper for check_match that passes down the current | |
4530 | __FILE__/__LINE__. */ | |
4531 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4532 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4533 | mock_index, \ | |
4534 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4535 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4536 | |
4537 | /* Identity checks. */ | |
4538 | for (const char *sym : test_symbols) | |
4539 | { | |
4540 | /* Should be able to match all existing symbols. */ | |
4541 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4542 | EXPECT (sym)); | |
4543 | ||
4544 | /* Should be able to match all existing symbols with | |
4545 | parameters. */ | |
4546 | std::string with_params = std::string (sym) + "(int)"; | |
4547 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4548 | EXPECT (sym)); | |
4549 | ||
4550 | /* Should be able to match all existing symbols with | |
4551 | parameters and qualifiers. */ | |
4552 | with_params = std::string (sym) + " ( int ) const"; | |
4553 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4554 | EXPECT (sym)); | |
4555 | ||
4556 | /* This should really find sym, but cp-name-parser.y doesn't | |
4557 | know about lvalue/rvalue qualifiers yet. */ | |
4558 | with_params = std::string (sym) + " ( int ) &&"; | |
4559 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4560 | {}); | |
4561 | } | |
4562 | ||
e1ef7d7a PA |
4563 | /* Check that the name matching algorithm for completion doesn't get |
4564 | confused with Latin1 'ÿ' / 0xff. */ | |
4565 | { | |
4566 | static const char str[] = "\377"; | |
4567 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4568 | EXPECT ("\377", "\377\377123")); | |
4569 | } | |
4570 | ||
4571 | /* Check that the increment-last-char in the matching algorithm for | |
4572 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4573 | { | |
4574 | static const char str[] = "t1_func"; | |
4575 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4576 | EXPECT ("t1_func", "t1_func1")); | |
4577 | } | |
4578 | ||
c62446b1 PA |
4579 | /* Check that completion mode works at each prefix of the expected |
4580 | symbol name. */ | |
4581 | { | |
4582 | static const char str[] = "function(int)"; | |
4583 | size_t len = strlen (str); | |
4584 | std::string lookup; | |
4585 | ||
4586 | for (size_t i = 1; i < len; i++) | |
4587 | { | |
4588 | lookup.assign (str, i); | |
4589 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4590 | EXPECT ("function")); | |
4591 | } | |
4592 | } | |
4593 | ||
4594 | /* While "w" is a prefix of both components, the match function | |
4595 | should still only be called once. */ | |
4596 | { | |
4597 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4598 | EXPECT ("w1::w2")); | |
a20714ff PA |
4599 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4600 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4601 | } |
4602 | ||
4603 | /* Same, with a "complicated" symbol. */ | |
4604 | { | |
4605 | static const char str[] = Z_SYM_NAME; | |
4606 | size_t len = strlen (str); | |
4607 | std::string lookup; | |
4608 | ||
4609 | for (size_t i = 1; i < len; i++) | |
4610 | { | |
4611 | lookup.assign (str, i); | |
4612 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4613 | EXPECT (Z_SYM_NAME)); | |
4614 | } | |
4615 | } | |
4616 | ||
4617 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4618 | { | |
4619 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4620 | {}); | |
4621 | } | |
4622 | ||
4623 | /* A complete symbol with parameters matches any overload, since the | |
4624 | index has no overload info. */ | |
4625 | { | |
4626 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4627 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4628 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4629 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4630 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4631 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4632 | } |
4633 | ||
4634 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4635 | template argument list. */ | |
4636 | { | |
4637 | static const char expected[] = "ns::foo<int>"; | |
4638 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4639 | EXPECT (expected)); | |
a20714ff PA |
4640 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4641 | EXPECT (expected)); | |
c62446b1 PA |
4642 | } |
4643 | ||
4644 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4645 | template argument list that includes a pointer. */ | |
4646 | { | |
4647 | static const char expected[] = "ns::foo<char*>"; | |
4648 | /* Try both completion and non-completion modes. */ | |
4649 | static const bool completion_mode[2] = {false, true}; | |
4650 | for (size_t i = 0; i < 2; i++) | |
4651 | { | |
4652 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4653 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4654 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4655 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4656 | |
4657 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4658 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4659 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4660 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4661 | } |
4662 | } | |
4663 | ||
4664 | { | |
4665 | /* Check method qualifiers are ignored. */ | |
4666 | static const char expected[] = "ns::foo<char*>"; | |
4667 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4668 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4669 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4670 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4671 | CHECK_MATCH ("foo < char * > ( int ) const", |
4672 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4673 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4674 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4675 | } |
4676 | ||
4677 | /* Test lookup names that don't match anything. */ | |
4678 | { | |
a20714ff PA |
4679 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4680 | {}); | |
4681 | ||
c62446b1 PA |
4682 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4683 | {}); | |
4684 | } | |
4685 | ||
a20714ff PA |
4686 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4687 | which should not be confused with a parameter list. */ | |
4688 | { | |
4689 | static const char *syms[] = { | |
4690 | "A::B::C", | |
4691 | "B::C", | |
4692 | "C", | |
4693 | "A :: B :: C ( int )", | |
4694 | "B :: C ( int )", | |
4695 | "C ( int )", | |
4696 | }; | |
4697 | ||
4698 | for (const char *s : syms) | |
4699 | { | |
4700 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4701 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4702 | } | |
4703 | } | |
4704 | ||
4705 | { | |
4706 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4707 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4708 | EXPECT (expected)); | |
4709 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4710 | EXPECT (expected)); | |
4711 | } | |
4712 | ||
c62446b1 PA |
4713 | SELF_CHECK (!any_mismatch); |
4714 | ||
4715 | #undef EXPECT | |
4716 | #undef CHECK_MATCH | |
4717 | } | |
4718 | ||
5c58de74 PA |
4719 | static void |
4720 | run_test () | |
4721 | { | |
4722 | test_mapped_index_find_name_component_bounds (); | |
4723 | test_dw2_expand_symtabs_matching_symbol (); | |
4724 | } | |
4725 | ||
c62446b1 PA |
4726 | }} // namespace selftests::dw2_expand_symtabs_matching |
4727 | ||
4728 | #endif /* GDB_SELF_TEST */ | |
4729 | ||
4b514bc8 JK |
4730 | /* If FILE_MATCHER is NULL or if PER_CU has |
4731 | dwarf2_per_cu_quick_data::MARK set (see | |
4732 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4733 | EXPANSION_NOTIFY on it. */ | |
4734 | ||
4735 | static void | |
4736 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4737 | (dwarf2_per_cu_data *per_cu, |
4738 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4739 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4740 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4741 | { | |
4742 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4743 | { | |
af758d11 | 4744 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4745 | |
97a1449a SM |
4746 | compunit_symtab *symtab |
4747 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4748 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4749 | |
af758d11 SM |
4750 | if (expansion_notify != NULL && symtab_was_null) |
4751 | expansion_notify (symtab); | |
4b514bc8 JK |
4752 | } |
4753 | } | |
4754 | ||
3f563c84 PA |
4755 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4756 | matched, to expand corresponding CUs that were marked. IDX is the | |
4757 | index of the symbol name that matched. */ | |
4758 | ||
4759 | static void | |
4760 | dw2_expand_marked_cus | |
976ca316 | 4761 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4762 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4763 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4764 | search_domain kind) | |
4765 | { | |
3f563c84 PA |
4766 | offset_type *vec, vec_len, vec_idx; |
4767 | bool global_seen = false; | |
976ca316 | 4768 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4769 | |
61920122 | 4770 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4771 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4772 | vec_len = MAYBE_SWAP (vec[0]); |
4773 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4774 | { | |
61920122 PA |
4775 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4776 | /* This value is only valid for index versions >= 7. */ | |
4777 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4778 | gdb_index_symbol_kind symbol_kind = | |
4779 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4780 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4781 | /* Only check the symbol attributes if they're present. | |
4782 | Indices prior to version 7 don't record them, | |
4783 | and indices >= 7 may elide them for certain symbols | |
4784 | (gold does this). */ | |
4785 | int attrs_valid = | |
4786 | (index.version >= 7 | |
4787 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4788 | ||
4789 | /* Work around gold/15646. */ | |
f030440d TV |
4790 | if (attrs_valid |
4791 | && !is_static | |
4792 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4793 | { |
f030440d | 4794 | if (global_seen) |
61920122 | 4795 | continue; |
f030440d TV |
4796 | |
4797 | global_seen = true; | |
61920122 | 4798 | } |
3190f0c6 | 4799 | |
61920122 PA |
4800 | /* Only check the symbol's kind if it has one. */ |
4801 | if (attrs_valid) | |
4802 | { | |
4803 | switch (kind) | |
8943b874 | 4804 | { |
61920122 PA |
4805 | case VARIABLES_DOMAIN: |
4806 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4807 | continue; | |
4808 | break; | |
4809 | case FUNCTIONS_DOMAIN: | |
4810 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4811 | continue; |
61920122 PA |
4812 | break; |
4813 | case TYPES_DOMAIN: | |
4814 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4815 | continue; | |
4816 | break; | |
59c35742 AB |
4817 | case MODULES_DOMAIN: |
4818 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4819 | continue; | |
4820 | break; | |
61920122 PA |
4821 | default: |
4822 | break; | |
8943b874 | 4823 | } |
61920122 | 4824 | } |
8943b874 | 4825 | |
61920122 | 4826 | /* Don't crash on bad data. */ |
976ca316 SM |
4827 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
4828 | + per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4829 | { |
b98664d3 | 4830 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4831 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4832 | continue; |
4833 | } | |
4834 | ||
976ca316 SM |
4835 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
4836 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, | |
4b514bc8 | 4837 | expansion_notify); |
61920122 PA |
4838 | } |
4839 | } | |
4840 | ||
4b514bc8 JK |
4841 | /* If FILE_MATCHER is non-NULL, set all the |
4842 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4843 | that match FILE_MATCHER. */ | |
4844 | ||
61920122 | 4845 | static void |
4b514bc8 | 4846 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4847 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4848 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4849 | { |
4b514bc8 | 4850 | if (file_matcher == NULL) |
61920122 PA |
4851 | return; |
4852 | ||
4b514bc8 JK |
4853 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4854 | htab_eq_pointer, | |
4855 | NULL, xcalloc, xfree)); | |
4856 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4857 | htab_eq_pointer, |
4858 | NULL, xcalloc, xfree)); | |
61920122 | 4859 | |
4b514bc8 JK |
4860 | /* The rule is CUs specify all the files, including those used by |
4861 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4862 | |
976ca316 | 4863 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4864 | { |
927aa2e7 JK |
4865 | QUIT; |
4866 | ||
4867 | per_cu->v.quick->mark = 0; | |
4868 | ||
4869 | /* We only need to look at symtabs not already expanded. */ | |
976ca316 | 4870 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4871 | continue; |
4872 | ||
976ca316 | 4873 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4874 | if (file_data == NULL) |
4875 | continue; | |
4876 | ||
4877 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4878 | continue; | |
4879 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4880 | { | |
4881 | per_cu->v.quick->mark = 1; | |
4882 | continue; | |
4883 | } | |
4884 | ||
b76e467d | 4885 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4886 | { |
4887 | const char *this_real_name; | |
4888 | ||
4889 | if (file_matcher (file_data->file_names[j], false)) | |
4890 | { | |
4891 | per_cu->v.quick->mark = 1; | |
4892 | break; | |
4893 | } | |
4894 | ||
4895 | /* Before we invoke realpath, which can get expensive when many | |
4896 | files are involved, do a quick comparison of the basenames. */ | |
4897 | if (!basenames_may_differ | |
4898 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4899 | true)) | |
4900 | continue; | |
4901 | ||
976ca316 | 4902 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4903 | if (file_matcher (this_real_name, false)) |
4904 | { | |
4905 | per_cu->v.quick->mark = 1; | |
4906 | break; | |
4907 | } | |
4908 | } | |
4909 | ||
b76e467d SM |
4910 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4911 | ? visited_found.get () | |
4912 | : visited_not_found.get (), | |
4913 | file_data, INSERT); | |
927aa2e7 JK |
4914 | *slot = file_data; |
4915 | } | |
4916 | } | |
4917 | ||
4918 | static void | |
4919 | dw2_expand_symtabs_matching | |
4920 | (struct objfile *objfile, | |
4921 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4922 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4923 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4924 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4925 | enum search_domain kind) | |
4926 | { | |
976ca316 | 4927 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4928 | |
4929 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4930 | if (!per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4931 | return; |
4932 | ||
976ca316 | 4933 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4934 | |
c1a66c06 TV |
4935 | if (symbol_matcher == NULL && lookup_name == NULL) |
4936 | { | |
976ca316 | 4937 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4938 | { |
4939 | QUIT; | |
4940 | ||
976ca316 | 4941 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
97a1449a | 4942 | file_matcher, expansion_notify); |
c1a66c06 TV |
4943 | } |
4944 | return; | |
4945 | } | |
4946 | ||
976ca316 | 4947 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4948 | |
c1a66c06 | 4949 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4950 | symbol_matcher, |
4951 | kind, [&] (offset_type idx) | |
4952 | { | |
976ca316 SM |
4953 | dw2_expand_marked_cus (per_objfile, idx, file_matcher, expansion_notify, |
4954 | kind); | |
3b00ef10 | 4955 | return true; |
976ca316 | 4956 | }, per_objfile); |
927aa2e7 JK |
4957 | } |
4958 | ||
4959 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4960 | symtab. */ | |
4961 | ||
4962 | static struct compunit_symtab * | |
4963 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4964 | CORE_ADDR pc) | |
4965 | { | |
4966 | int i; | |
4967 | ||
4968 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4969 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4970 | return cust; | |
4971 | ||
4972 | if (cust->includes == NULL) | |
4973 | return NULL; | |
4974 | ||
4975 | for (i = 0; cust->includes[i]; ++i) | |
4976 | { | |
4977 | struct compunit_symtab *s = cust->includes[i]; | |
4978 | ||
4979 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4980 | if (s != NULL) | |
4981 | return s; | |
4982 | } | |
4983 | ||
4984 | return NULL; | |
4985 | } | |
4986 | ||
4987 | static struct compunit_symtab * | |
4988 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4989 | struct bound_minimal_symbol msymbol, | |
4990 | CORE_ADDR pc, | |
4991 | struct obj_section *section, | |
4992 | int warn_if_readin) | |
4993 | { | |
4994 | struct dwarf2_per_cu_data *data; | |
4995 | struct compunit_symtab *result; | |
4996 | ||
d320c2b5 | 4997 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4998 | return NULL; |
4999 | ||
b3b3bada | 5000 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
5001 | data = (struct dwarf2_per_cu_data *) addrmap_find |
5002 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
5003 | if (!data) |
5004 | return NULL; | |
5005 | ||
af758d11 SM |
5006 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
5007 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 5008 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 5009 | paddress (objfile->arch (), pc)); |
927aa2e7 | 5010 | |
97a1449a SM |
5011 | result = recursively_find_pc_sect_compunit_symtab |
5012 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
5013 | ||
927aa2e7 JK |
5014 | gdb_assert (result != NULL); |
5015 | return result; | |
5016 | } | |
5017 | ||
5018 | static void | |
5019 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5020 | void *data, int need_fullname) | |
5021 | { | |
976ca316 | 5022 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 5023 | |
976ca316 | 5024 | if (!per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 5025 | { |
976ca316 | 5026 | per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
5027 | |
5028 | htab_up visited (htab_create_alloc (10, | |
5029 | htab_hash_pointer, htab_eq_pointer, | |
5030 | NULL, xcalloc, xfree)); | |
5031 | ||
5032 | /* The rule is CUs specify all the files, including those used | |
5033 | by any TU, so there's no need to scan TUs here. We can | |
5034 | ignore file names coming from already-expanded CUs. */ | |
5035 | ||
976ca316 | 5036 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 5037 | { |
976ca316 | 5038 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5039 | { |
5040 | void **slot = htab_find_slot (visited.get (), | |
5041 | per_cu->v.quick->file_names, | |
5042 | INSERT); | |
5043 | ||
5044 | *slot = per_cu->v.quick->file_names; | |
5045 | } | |
5046 | } | |
5047 | ||
976ca316 | 5048 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 5049 | { |
927aa2e7 | 5050 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 5051 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5052 | continue; |
5053 | ||
ab432490 | 5054 | quick_file_names *file_data |
976ca316 | 5055 | = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
5056 | if (file_data == NULL) |
5057 | continue; | |
5058 | ||
b76e467d | 5059 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5060 | if (*slot) |
5061 | { | |
5062 | /* Already visited. */ | |
5063 | continue; | |
5064 | } | |
5065 | *slot = file_data; | |
5066 | ||
5067 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5068 | { | |
5069 | const char *filename = file_data->file_names[j]; | |
976ca316 | 5070 | per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
5071 | } |
5072 | } | |
5073 | } | |
5074 | ||
976ca316 | 5075 | per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
5076 | { |
5077 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5078 | ||
5079 | if (need_fullname) | |
5080 | this_real_name = gdb_realpath (filename); | |
5081 | (*fun) (filename, this_real_name.get (), data); | |
5082 | }); | |
5083 | } | |
5084 | ||
5085 | static int | |
5086 | dw2_has_symbols (struct objfile *objfile) | |
5087 | { | |
5088 | return 1; | |
5089 | } | |
5090 | ||
5091 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5092 | { | |
5093 | dw2_has_symbols, | |
5094 | dw2_find_last_source_symtab, | |
5095 | dw2_forget_cached_source_info, | |
5096 | dw2_map_symtabs_matching_filename, | |
5097 | dw2_lookup_symbol, | |
d3214198 | 5098 | NULL, |
927aa2e7 JK |
5099 | dw2_print_stats, |
5100 | dw2_dump, | |
927aa2e7 JK |
5101 | dw2_expand_symtabs_for_function, |
5102 | dw2_expand_all_symtabs, | |
5103 | dw2_expand_symtabs_with_fullname, | |
5104 | dw2_map_matching_symbols, | |
5105 | dw2_expand_symtabs_matching, | |
5106 | dw2_find_pc_sect_compunit_symtab, | |
5107 | NULL, | |
5108 | dw2_map_symbol_filenames | |
5109 | }; | |
5110 | ||
5111 | /* DWARF-5 debug_names reader. */ | |
5112 | ||
5113 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5114 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5115 | ||
5116 | /* A helper function that reads the .debug_names section in SECTION | |
5117 | and fills in MAP. FILENAME is the name of the file containing the | |
5118 | section; it is used for error reporting. | |
5119 | ||
5120 | Returns true if all went well, false otherwise. */ | |
5121 | ||
5122 | static bool | |
5123 | read_debug_names_from_section (struct objfile *objfile, | |
5124 | const char *filename, | |
5125 | struct dwarf2_section_info *section, | |
5126 | mapped_debug_names &map) | |
5127 | { | |
96b79293 | 5128 | if (section->empty ()) |
927aa2e7 JK |
5129 | return false; |
5130 | ||
5131 | /* Older elfutils strip versions could keep the section in the main | |
5132 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5133 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
5134 | return false; |
5135 | ||
96b79293 | 5136 | section->read (objfile); |
927aa2e7 | 5137 | |
08feed99 | 5138 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
5139 | |
5140 | const gdb_byte *addr = section->buffer; | |
5141 | ||
96b79293 | 5142 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
5143 | |
5144 | unsigned int bytes_read; | |
5145 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5146 | addr += bytes_read; | |
5147 | ||
5148 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5149 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5150 | if (bytes_read + length != section->size) | |
5151 | { | |
5152 | /* There may be multiple per-CU indices. */ | |
5153 | warning (_("Section .debug_names in %s length %s does not match " | |
5154 | "section length %s, ignoring .debug_names."), | |
5155 | filename, plongest (bytes_read + length), | |
5156 | pulongest (section->size)); | |
5157 | return false; | |
5158 | } | |
5159 | ||
5160 | /* The version number. */ | |
5161 | uint16_t version = read_2_bytes (abfd, addr); | |
5162 | addr += 2; | |
5163 | if (version != 5) | |
5164 | { | |
5165 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5166 | "ignoring .debug_names."), | |
5167 | filename, version); | |
5168 | return false; | |
5169 | } | |
5170 | ||
5171 | /* Padding. */ | |
5172 | uint16_t padding = read_2_bytes (abfd, addr); | |
5173 | addr += 2; | |
5174 | if (padding != 0) | |
5175 | { | |
5176 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5177 | "ignoring .debug_names."), | |
5178 | filename, padding); | |
5179 | return false; | |
5180 | } | |
5181 | ||
5182 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5183 | map.cu_count = read_4_bytes (abfd, addr); | |
5184 | addr += 4; | |
5185 | ||
5186 | /* local_type_unit_count - The number of TUs in the local TU | |
5187 | list. */ | |
5188 | map.tu_count = read_4_bytes (abfd, addr); | |
5189 | addr += 4; | |
5190 | ||
5191 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5192 | list. */ | |
5193 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5194 | addr += 4; | |
5195 | if (foreign_tu_count != 0) | |
5196 | { | |
5197 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5198 | "ignoring .debug_names."), | |
5199 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5200 | return false; | |
5201 | } | |
5202 | ||
5203 | /* bucket_count - The number of hash buckets in the hash lookup | |
5204 | table. */ | |
5205 | map.bucket_count = read_4_bytes (abfd, addr); | |
5206 | addr += 4; | |
5207 | ||
5208 | /* name_count - The number of unique names in the index. */ | |
5209 | map.name_count = read_4_bytes (abfd, addr); | |
5210 | addr += 4; | |
5211 | ||
5212 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5213 | table. */ | |
5214 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5215 | addr += 4; | |
5216 | ||
5217 | /* augmentation_string_size - The size in bytes of the augmentation | |
5218 | string. This value is rounded up to a multiple of 4. */ | |
5219 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5220 | addr += 4; | |
5221 | map.augmentation_is_gdb = ((augmentation_string_size | |
5222 | == sizeof (dwarf5_augmentation)) | |
5223 | && memcmp (addr, dwarf5_augmentation, | |
5224 | sizeof (dwarf5_augmentation)) == 0); | |
5225 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5226 | addr += augmentation_string_size; | |
5227 | ||
5228 | /* List of CUs */ | |
5229 | map.cu_table_reordered = addr; | |
5230 | addr += map.cu_count * map.offset_size; | |
5231 | ||
5232 | /* List of Local TUs */ | |
5233 | map.tu_table_reordered = addr; | |
5234 | addr += map.tu_count * map.offset_size; | |
5235 | ||
5236 | /* Hash Lookup Table */ | |
5237 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5238 | addr += map.bucket_count * 4; | |
5239 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5240 | addr += map.name_count * 4; | |
5241 | ||
5242 | /* Name Table */ | |
5243 | map.name_table_string_offs_reordered = addr; | |
5244 | addr += map.name_count * map.offset_size; | |
5245 | map.name_table_entry_offs_reordered = addr; | |
5246 | addr += map.name_count * map.offset_size; | |
5247 | ||
5248 | const gdb_byte *abbrev_table_start = addr; | |
5249 | for (;;) | |
5250 | { | |
927aa2e7 JK |
5251 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5252 | addr += bytes_read; | |
5253 | if (index_num == 0) | |
5254 | break; | |
5255 | ||
5256 | const auto insertpair | |
5257 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5258 | if (!insertpair.second) | |
5259 | { | |
5260 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5261 | "ignoring .debug_names."), | |
5262 | filename, pulongest (index_num)); | |
5263 | return false; | |
5264 | } | |
5265 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5266 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5267 | addr += bytes_read; | |
5268 | ||
5269 | for (;;) | |
5270 | { | |
5271 | mapped_debug_names::index_val::attr attr; | |
5272 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5273 | addr += bytes_read; | |
5274 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5275 | addr += bytes_read; | |
5276 | if (attr.form == DW_FORM_implicit_const) | |
5277 | { | |
5278 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5279 | &bytes_read); | |
5280 | addr += bytes_read; | |
5281 | } | |
5282 | if (attr.dw_idx == 0 && attr.form == 0) | |
5283 | break; | |
5284 | indexval.attr_vec.push_back (std::move (attr)); | |
5285 | } | |
5286 | } | |
5287 | if (addr != abbrev_table_start + abbrev_table_size) | |
5288 | { | |
5289 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5290 | "of size %s vs. written as %u, ignoring .debug_names."), |
5291 | filename, plongest (addr - abbrev_table_start), | |
5292 | abbrev_table_size); | |
927aa2e7 JK |
5293 | return false; |
5294 | } | |
5295 | map.entry_pool = addr; | |
5296 | ||
5297 | return true; | |
5298 | } | |
5299 | ||
5300 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5301 | list. */ | |
5302 | ||
5303 | static void | |
168c9250 | 5304 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5305 | const mapped_debug_names &map, |
5306 | dwarf2_section_info §ion, | |
b76e467d | 5307 | bool is_dwz) |
927aa2e7 | 5308 | { |
3ee6bb11 TV |
5309 | if (!map.augmentation_is_gdb) |
5310 | { | |
5311 | for (uint32_t i = 0; i < map.cu_count; ++i) | |
5312 | { | |
5313 | sect_offset sect_off | |
5314 | = (sect_offset) (extract_unsigned_integer | |
5315 | (map.cu_table_reordered + i * map.offset_size, | |
5316 | map.offset_size, | |
5317 | map.dwarf5_byte_order)); | |
5318 | /* We don't know the length of the CU, because the CU list in a | |
5319 | .debug_names index can be incomplete, so we can't use the start of | |
5320 | the next CU as end of this CU. We create the CUs here with length 0, | |
5321 | and in cutu_reader::cutu_reader we'll fill in the actual length. */ | |
5322 | dwarf2_per_cu_data *per_cu | |
168c9250 SM |
5323 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, sect_off, 0); |
5324 | per_bfd->all_comp_units.push_back (per_cu); | |
3ee6bb11 TV |
5325 | } |
5326 | } | |
5327 | ||
927aa2e7 JK |
5328 | sect_offset sect_off_prev; |
5329 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5330 | { | |
5331 | sect_offset sect_off_next; | |
5332 | if (i < map.cu_count) | |
5333 | { | |
5334 | sect_off_next | |
5335 | = (sect_offset) (extract_unsigned_integer | |
5336 | (map.cu_table_reordered + i * map.offset_size, | |
5337 | map.offset_size, | |
5338 | map.dwarf5_byte_order)); | |
5339 | } | |
5340 | else | |
5341 | sect_off_next = (sect_offset) section.size; | |
5342 | if (i >= 1) | |
5343 | { | |
5344 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5345 | dwarf2_per_cu_data *per_cu |
168c9250 | 5346 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5347 | sect_off_prev, length); |
168c9250 | 5348 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5349 | } |
5350 | sect_off_prev = sect_off_next; | |
5351 | } | |
5352 | } | |
5353 | ||
5354 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5355 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5356 | |
5357 | static void | |
168c9250 | 5358 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5359 | const mapped_debug_names &map, |
5360 | const mapped_debug_names &dwz_map) | |
5361 | { | |
168c9250 SM |
5362 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5363 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5364 | |
168c9250 | 5365 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5366 | false /* is_dwz */); |
927aa2e7 JK |
5367 | |
5368 | if (dwz_map.cu_count == 0) | |
5369 | return; | |
5370 | ||
168c9250 SM |
5371 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5372 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5373 | true /* is_dwz */); |
927aa2e7 JK |
5374 | } |
5375 | ||
5376 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5377 | elements of all the CUs and return true. Otherwise, return false. */ | |
5378 | ||
5379 | static bool | |
976ca316 | 5380 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 5381 | { |
fcf23d5b SM |
5382 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5383 | mapped_debug_names dwz_map; | |
976ca316 | 5384 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 5385 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
5386 | |
5387 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
976ca316 | 5388 | &per_objfile->per_bfd->debug_names, *map)) |
927aa2e7 JK |
5389 | return false; |
5390 | ||
5391 | /* Don't use the index if it's empty. */ | |
22ca247e | 5392 | if (map->name_count == 0) |
927aa2e7 JK |
5393 | return false; |
5394 | ||
5395 | /* If there is a .dwz file, read it so we can get its CU list as | |
5396 | well. */ | |
f8c41851 | 5397 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5398 | if (dwz != NULL) |
5399 | { | |
5400 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5401 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5402 | &dwz->debug_names, dwz_map)) |
5403 | { | |
5404 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5405 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5406 | return false; |
5407 | } | |
5408 | } | |
5409 | ||
f8c41851 | 5410 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5411 | |
22ca247e | 5412 | if (map->tu_count != 0) |
927aa2e7 JK |
5413 | { |
5414 | /* We can only handle a single .debug_types when we have an | |
5415 | index. */ | |
f8c41851 | 5416 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5417 | return false; |
5418 | ||
f8c41851 | 5419 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5420 | |
5421 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5422 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5423 | } |
5424 | ||
f8c41851 | 5425 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5426 | |
f8c41851 SM |
5427 | per_bfd->debug_names_table = std::move (map); |
5428 | per_bfd->using_index = 1; | |
5429 | per_bfd->quick_file_names_table = | |
976ca316 | 5430 | create_quick_file_names_table (per_objfile->per_bfd->all_comp_units.size ()); |
927aa2e7 | 5431 | |
f8c41851 SM |
5432 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent |
5433 | objfiles using the same BFD. */ | |
5434 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
5435 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
5436 | ||
927aa2e7 JK |
5437 | return true; |
5438 | } | |
5439 | ||
927aa2e7 JK |
5440 | /* Type used to manage iterating over all CUs looking for a symbol for |
5441 | .debug_names. */ | |
5442 | ||
5443 | class dw2_debug_names_iterator | |
5444 | { | |
5445 | public: | |
927aa2e7 | 5446 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5447 | gdb::optional<block_enum> block_index, |
5448 | domain_enum domain, | |
fcf23d5b | 5449 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5450 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5451 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5452 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5453 | {} |
5454 | ||
5455 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
fcf23d5b | 5456 | search_domain search, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5457 | : m_map (map), |
5458 | m_search (search), | |
fcf23d5b SM |
5459 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5460 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5461 | {} |
5462 | ||
3b00ef10 TT |
5463 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5464 | block_enum block_index, domain_enum domain, | |
fcf23d5b | 5465 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5466 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5467 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5468 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5469 | {} |
5470 | ||
927aa2e7 JK |
5471 | /* Return the next matching CU or NULL if there are no more. */ |
5472 | dwarf2_per_cu_data *next (); | |
5473 | ||
5474 | private: | |
5475 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5476 | const char *name, |
5477 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5478 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5479 | uint32_t namei, |
5480 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5481 | |
5482 | /* The internalized form of .debug_names. */ | |
5483 | const mapped_debug_names &m_map; | |
5484 | ||
2b79f376 SM |
5485 | /* If set, only look for symbols that match that block. Valid values are |
5486 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5487 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5488 | |
5489 | /* The kind of symbol we're looking for. */ | |
5490 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5491 | const search_domain m_search = ALL_DOMAIN; | |
5492 | ||
5493 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5494 | not found. */ | |
5495 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5496 | |
5497 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5498 | }; |
5499 | ||
5500 | const char * | |
fcf23d5b | 5501 | mapped_debug_names::namei_to_name |
976ca316 | 5502 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5503 | { |
5504 | const ULONGEST namei_string_offs | |
5505 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5506 | + namei * offset_size), | |
5507 | offset_size, | |
5508 | dwarf5_byte_order); | |
976ca316 | 5509 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5510 | } |
5511 | ||
5512 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5513 | found, return pointer to its pool data. If NAME cannot be found, | |
5514 | return NULL. */ | |
5515 | ||
5516 | const gdb_byte * | |
5517 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5518 | (const mapped_debug_names &map, const char *name, |
5519 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5520 | { |
5521 | int (*cmp) (const char *, const char *); | |
5522 | ||
54ee4252 | 5523 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5524 | if (current_language->la_language == language_cplus |
5525 | || current_language->la_language == language_fortran | |
5526 | || current_language->la_language == language_d) | |
5527 | { | |
5528 | /* NAME is already canonical. Drop any qualifiers as | |
5529 | .debug_names does not contain any. */ | |
5530 | ||
5531 | if (strchr (name, '(') != NULL) | |
5532 | { | |
54ee4252 | 5533 | without_params = cp_remove_params (name); |
927aa2e7 | 5534 | if (without_params != NULL) |
54ee4252 | 5535 | name = without_params.get (); |
927aa2e7 JK |
5536 | } |
5537 | } | |
5538 | ||
5539 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5540 | ||
5541 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5542 | uint32_t namei | |
5543 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5544 | (map.bucket_table_reordered | |
5545 | + (full_hash % map.bucket_count)), 4, | |
5546 | map.dwarf5_byte_order); | |
5547 | if (namei == 0) | |
5548 | return NULL; | |
5549 | --namei; | |
5550 | if (namei >= map.name_count) | |
5551 | { | |
b98664d3 | 5552 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5553 | "[in module %s]"), |
5554 | namei, map.name_count, | |
fcf23d5b | 5555 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5556 | return NULL; |
5557 | } | |
5558 | ||
5559 | for (;;) | |
5560 | { | |
5561 | const uint32_t namei_full_hash | |
5562 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5563 | (map.hash_table_reordered + namei), 4, | |
5564 | map.dwarf5_byte_order); | |
5565 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5566 | return NULL; | |
5567 | ||
5568 | if (full_hash == namei_full_hash) | |
5569 | { | |
fcf23d5b | 5570 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5571 | |
5572 | #if 0 /* An expensive sanity check. */ | |
5573 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5574 | { | |
b98664d3 | 5575 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5576 | "[in module %s]"), |
5577 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5578 | return NULL; | |
5579 | } | |
5580 | #endif | |
5581 | ||
5582 | if (cmp (namei_string, name) == 0) | |
5583 | { | |
5584 | const ULONGEST namei_entry_offs | |
5585 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5586 | + namei * map.offset_size), | |
5587 | map.offset_size, map.dwarf5_byte_order); | |
5588 | return map.entry_pool + namei_entry_offs; | |
5589 | } | |
5590 | } | |
5591 | ||
5592 | ++namei; | |
5593 | if (namei >= map.name_count) | |
5594 | return NULL; | |
5595 | } | |
5596 | } | |
5597 | ||
5598 | const gdb_byte * | |
5599 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5600 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5601 | { |
5602 | if (namei >= map.name_count) | |
5603 | { | |
b98664d3 | 5604 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5605 | "[in module %s]"), |
5606 | namei, map.name_count, | |
fcf23d5b | 5607 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5608 | return NULL; |
5609 | } | |
5610 | ||
5611 | const ULONGEST namei_entry_offs | |
5612 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5613 | + namei * map.offset_size), | |
5614 | map.offset_size, map.dwarf5_byte_order); | |
5615 | return map.entry_pool + namei_entry_offs; | |
5616 | } | |
5617 | ||
5618 | /* See dw2_debug_names_iterator. */ | |
5619 | ||
5620 | dwarf2_per_cu_data * | |
5621 | dw2_debug_names_iterator::next () | |
5622 | { | |
5623 | if (m_addr == NULL) | |
5624 | return NULL; | |
5625 | ||
fcf23d5b SM |
5626 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5627 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5628 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5629 | |
5630 | again: | |
5631 | ||
5632 | unsigned int bytes_read; | |
5633 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5634 | m_addr += bytes_read; | |
5635 | if (abbrev == 0) | |
5636 | return NULL; | |
5637 | ||
5638 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5639 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5640 | { | |
b98664d3 | 5641 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5642 | "[in module %s]"), |
ed2dc618 | 5643 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5644 | return NULL; |
5645 | } | |
5646 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5647 | enum class symbol_linkage { |
5648 | unknown, | |
5649 | static_, | |
5650 | extern_, | |
23c13d42 | 5651 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5652 | dwarf2_per_cu_data *per_cu = NULL; |
5653 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5654 | { | |
5655 | ULONGEST ull; | |
5656 | switch (attr.form) | |
5657 | { | |
5658 | case DW_FORM_implicit_const: | |
5659 | ull = attr.implicit_const; | |
5660 | break; | |
5661 | case DW_FORM_flag_present: | |
5662 | ull = 1; | |
5663 | break; | |
5664 | case DW_FORM_udata: | |
5665 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5666 | m_addr += bytes_read; | |
5667 | break; | |
6dc55ce9 | 5668 | case DW_FORM_ref4: |
5669 | ull = read_4_bytes (abfd, m_addr); | |
5670 | m_addr += 4; | |
5671 | break; | |
5672 | case DW_FORM_ref8: | |
5673 | ull = read_8_bytes (abfd, m_addr); | |
5674 | m_addr += 8; | |
5675 | break; | |
5676 | case DW_FORM_ref_sig8: | |
5677 | ull = read_8_bytes (abfd, m_addr); | |
5678 | m_addr += 8; | |
5679 | break; | |
927aa2e7 | 5680 | default: |
b98664d3 | 5681 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5682 | dwarf_form_name (attr.form), |
ed2dc618 | 5683 | objfile_name (objfile)); |
927aa2e7 JK |
5684 | return NULL; |
5685 | } | |
5686 | switch (attr.dw_idx) | |
5687 | { | |
5688 | case DW_IDX_compile_unit: | |
5689 | /* Don't crash on bad data. */ | |
fcf23d5b | 5690 | if (ull >= m_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5691 | { |
b98664d3 | 5692 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5693 | " [in module %s]"), |
5694 | pulongest (ull), | |
fcf23d5b | 5695 | objfile_name (objfile)); |
927aa2e7 JK |
5696 | continue; |
5697 | } | |
fcf23d5b | 5698 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5699 | break; |
8af5c486 JK |
5700 | case DW_IDX_type_unit: |
5701 | /* Don't crash on bad data. */ | |
fcf23d5b | 5702 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5703 | { |
b98664d3 | 5704 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5705 | " [in module %s]"), |
5706 | pulongest (ull), | |
fcf23d5b | 5707 | objfile_name (objfile)); |
8af5c486 JK |
5708 | continue; |
5709 | } | |
fcf23d5b | 5710 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5711 | break; |
6dc55ce9 | 5712 | case DW_IDX_die_offset: |
5713 | /* In a per-CU index (as opposed to a per-module index), index | |
5714 | entries without CU attribute implicitly refer to the single CU. */ | |
5715 | if (per_cu == NULL) | |
fcf23d5b | 5716 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5717 | break; |
927aa2e7 JK |
5718 | case DW_IDX_GNU_internal: |
5719 | if (!m_map.augmentation_is_gdb) | |
5720 | break; | |
23c13d42 | 5721 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5722 | break; |
5723 | case DW_IDX_GNU_external: | |
5724 | if (!m_map.augmentation_is_gdb) | |
5725 | break; | |
23c13d42 | 5726 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5727 | break; |
5728 | } | |
5729 | } | |
5730 | ||
5731 | /* Skip if already read in. */ | |
fcf23d5b | 5732 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5733 | goto again; |
5734 | ||
5735 | /* Check static vs global. */ | |
23c13d42 | 5736 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5737 | { |
2b79f376 | 5738 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5739 | const bool symbol_is_static = |
5740 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5741 | if (want_static != symbol_is_static) |
2b79f376 | 5742 | goto again; |
927aa2e7 JK |
5743 | } |
5744 | ||
5745 | /* Match dw2_symtab_iter_next, symbol_kind | |
5746 | and debug_names::psymbol_tag. */ | |
5747 | switch (m_domain) | |
5748 | { | |
5749 | case VAR_DOMAIN: | |
5750 | switch (indexval.dwarf_tag) | |
5751 | { | |
5752 | case DW_TAG_variable: | |
5753 | case DW_TAG_subprogram: | |
5754 | /* Some types are also in VAR_DOMAIN. */ | |
5755 | case DW_TAG_typedef: | |
5756 | case DW_TAG_structure_type: | |
5757 | break; | |
5758 | default: | |
5759 | goto again; | |
5760 | } | |
5761 | break; | |
5762 | case STRUCT_DOMAIN: | |
5763 | switch (indexval.dwarf_tag) | |
5764 | { | |
5765 | case DW_TAG_typedef: | |
5766 | case DW_TAG_structure_type: | |
5767 | break; | |
5768 | default: | |
5769 | goto again; | |
5770 | } | |
5771 | break; | |
5772 | case LABEL_DOMAIN: | |
5773 | switch (indexval.dwarf_tag) | |
5774 | { | |
5775 | case 0: | |
5776 | case DW_TAG_variable: | |
5777 | break; | |
5778 | default: | |
5779 | goto again; | |
5780 | } | |
5781 | break; | |
59c35742 AB |
5782 | case MODULE_DOMAIN: |
5783 | switch (indexval.dwarf_tag) | |
5784 | { | |
5785 | case DW_TAG_module: | |
5786 | break; | |
5787 | default: | |
5788 | goto again; | |
5789 | } | |
5790 | break; | |
927aa2e7 JK |
5791 | default: |
5792 | break; | |
5793 | } | |
5794 | ||
5795 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5796 | debug_names::psymbol_tag. */ | |
5797 | switch (m_search) | |
4b514bc8 | 5798 | { |
927aa2e7 JK |
5799 | case VARIABLES_DOMAIN: |
5800 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5801 | { |
927aa2e7 JK |
5802 | case DW_TAG_variable: |
5803 | break; | |
5804 | default: | |
5805 | goto again; | |
4b514bc8 | 5806 | } |
927aa2e7 JK |
5807 | break; |
5808 | case FUNCTIONS_DOMAIN: | |
5809 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5810 | { |
927aa2e7 JK |
5811 | case DW_TAG_subprogram: |
5812 | break; | |
5813 | default: | |
5814 | goto again; | |
4b514bc8 | 5815 | } |
927aa2e7 JK |
5816 | break; |
5817 | case TYPES_DOMAIN: | |
5818 | switch (indexval.dwarf_tag) | |
5819 | { | |
5820 | case DW_TAG_typedef: | |
5821 | case DW_TAG_structure_type: | |
5822 | break; | |
5823 | default: | |
5824 | goto again; | |
5825 | } | |
5826 | break; | |
59c35742 AB |
5827 | case MODULES_DOMAIN: |
5828 | switch (indexval.dwarf_tag) | |
5829 | { | |
5830 | case DW_TAG_module: | |
5831 | break; | |
5832 | default: | |
5833 | goto again; | |
5834 | } | |
927aa2e7 JK |
5835 | default: |
5836 | break; | |
4b514bc8 | 5837 | } |
927aa2e7 JK |
5838 | |
5839 | return per_cu; | |
4b514bc8 | 5840 | } |
61920122 | 5841 | |
927aa2e7 | 5842 | static struct compunit_symtab * |
c7f839cb | 5843 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5844 | const char *name, domain_enum domain) |
4b514bc8 | 5845 | { |
976ca316 | 5846 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
61920122 | 5847 | |
976ca316 | 5848 | const auto &mapp = per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5849 | if (!mapp) |
61920122 | 5850 | { |
927aa2e7 JK |
5851 | /* index is NULL if OBJF_READNOW. */ |
5852 | return NULL; | |
5853 | } | |
5854 | const auto &map = *mapp; | |
9291a0cd | 5855 | |
976ca316 | 5856 | dw2_debug_names_iterator iter (map, block_index, domain, name, per_objfile); |
9703b513 | 5857 | |
927aa2e7 JK |
5858 | struct compunit_symtab *stab_best = NULL; |
5859 | struct dwarf2_per_cu_data *per_cu; | |
5860 | while ((per_cu = iter.next ()) != NULL) | |
5861 | { | |
5862 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 5863 | compunit_symtab *stab |
976ca316 | 5864 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 | 5865 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5866 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5867 | |
927aa2e7 JK |
5868 | sym = block_find_symbol (block, name, domain, |
5869 | block_find_non_opaque_type_preferred, | |
5870 | &with_opaque); | |
9703b513 | 5871 | |
927aa2e7 JK |
5872 | /* Some caution must be observed with overloaded functions and |
5873 | methods, since the index will not contain any overload | |
5874 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5875 | |
927aa2e7 | 5876 | if (sym != NULL |
987012b8 | 5877 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5878 | return stab; |
5879 | if (with_opaque != NULL | |
987012b8 | 5880 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5881 | stab_best = stab; |
9703b513 | 5882 | |
927aa2e7 | 5883 | /* Keep looking through other CUs. */ |
9703b513 TT |
5884 | } |
5885 | ||
927aa2e7 | 5886 | return stab_best; |
9703b513 TT |
5887 | } |
5888 | ||
927aa2e7 JK |
5889 | /* This dumps minimal information about .debug_names. It is called |
5890 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5891 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5892 | |
927aa2e7 JK |
5893 | static void |
5894 | dw2_debug_names_dump (struct objfile *objfile) | |
5895 | { | |
976ca316 | 5896 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5897 | |
976ca316 | 5898 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5899 | printf_filtered (".debug_names:"); |
976ca316 | 5900 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5901 | printf_filtered (" exists\n"); |
5902 | else | |
5903 | printf_filtered (" faked for \"readnow\"\n"); | |
5904 | printf_filtered ("\n"); | |
9291a0cd TT |
5905 | } |
5906 | ||
9291a0cd | 5907 | static void |
927aa2e7 JK |
5908 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5909 | const char *func_name) | |
9291a0cd | 5910 | { |
976ca316 | 5911 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 5912 | |
976ca316 SM |
5913 | /* per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5914 | if (per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5915 | { |
976ca316 | 5916 | const mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
24c79950 | 5917 | |
fcf23d5b | 5918 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name, |
976ca316 | 5919 | per_objfile); |
24c79950 | 5920 | |
927aa2e7 JK |
5921 | struct dwarf2_per_cu_data *per_cu; |
5922 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5923 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 JK |
5924 | } |
5925 | } | |
24c79950 | 5926 | |
3b00ef10 TT |
5927 | static void |
5928 | dw2_debug_names_map_matching_symbols | |
5929 | (struct objfile *objfile, | |
5930 | const lookup_name_info &name, domain_enum domain, | |
5931 | int global, | |
5932 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5933 | symbol_compare_ftype *ordered_compare) | |
5934 | { | |
976ca316 | 5935 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5936 | |
5937 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5938 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5939 | return; |
5940 | ||
976ca316 | 5941 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5942 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5943 | ||
5944 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5945 | auto matcher = [&] (const char *symname) | |
5946 | { | |
5947 | if (ordered_compare == nullptr) | |
5948 | return true; | |
5949 | return ordered_compare (symname, match_name) == 0; | |
5950 | }; | |
5951 | ||
5952 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5953 | [&] (offset_type namei) | |
5954 | { | |
5955 | /* The name was matched, now expand corresponding CUs that were | |
5956 | marked. */ | |
fcf23d5b | 5957 | dw2_debug_names_iterator iter (map, block_kind, domain, namei, |
976ca316 | 5958 | per_objfile); |
3b00ef10 TT |
5959 | |
5960 | struct dwarf2_per_cu_data *per_cu; | |
5961 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5962 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5963 | nullptr); |
3b00ef10 | 5964 | return true; |
976ca316 | 5965 | }, per_objfile); |
3b00ef10 TT |
5966 | |
5967 | /* It's a shame we couldn't do this inside the | |
5968 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5969 | that have already been expanded. Instead, this loop matches what | |
5970 | the psymtab code does. */ | |
976ca316 | 5971 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5972 | { |
976ca316 | 5973 | compunit_symtab *symtab = per_objfile->get_symtab (per_cu); |
af758d11 | 5974 | if (symtab != nullptr) |
3b00ef10 TT |
5975 | { |
5976 | const struct block *block | |
af758d11 | 5977 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5978 | if (!iterate_over_symbols_terminated (block, name, |
5979 | domain, callback)) | |
5980 | break; | |
5981 | } | |
5982 | } | |
5983 | } | |
5984 | ||
927aa2e7 JK |
5985 | static void |
5986 | dw2_debug_names_expand_symtabs_matching | |
5987 | (struct objfile *objfile, | |
5988 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5989 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5990 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5991 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5992 | enum search_domain kind) | |
5993 | { | |
976ca316 | 5994 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 5995 | |
927aa2e7 | 5996 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 5997 | if (!per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5998 | return; |
9291a0cd | 5999 | |
976ca316 | 6000 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 6001 | |
c1a66c06 TV |
6002 | if (symbol_matcher == NULL && lookup_name == NULL) |
6003 | { | |
976ca316 | 6004 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
6005 | { |
6006 | QUIT; | |
6007 | ||
976ca316 SM |
6008 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
6009 | expansion_notify); | |
c1a66c06 TV |
6010 | } |
6011 | return; | |
6012 | } | |
6013 | ||
976ca316 | 6014 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 6015 | |
c1a66c06 | 6016 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
6017 | symbol_matcher, |
6018 | kind, [&] (offset_type namei) | |
927aa2e7 | 6019 | { |
927aa2e7 JK |
6020 | /* The name was matched, now expand corresponding CUs that were |
6021 | marked. */ | |
976ca316 | 6022 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile); |
bbf2f4df | 6023 | |
927aa2e7 JK |
6024 | struct dwarf2_per_cu_data *per_cu; |
6025 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 SM |
6026 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
6027 | expansion_notify); | |
3b00ef10 | 6028 | return true; |
976ca316 | 6029 | }, per_objfile); |
9291a0cd TT |
6030 | } |
6031 | ||
927aa2e7 | 6032 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6033 | { |
6034 | dw2_has_symbols, | |
6035 | dw2_find_last_source_symtab, | |
6036 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6037 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6038 | dw2_debug_names_lookup_symbol, |
d3214198 | 6039 | NULL, |
9291a0cd | 6040 | dw2_print_stats, |
927aa2e7 | 6041 | dw2_debug_names_dump, |
927aa2e7 | 6042 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6043 | dw2_expand_all_symtabs, |
652a8996 | 6044 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 6045 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 6046 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6047 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6048 | NULL, |
9291a0cd TT |
6049 | dw2_map_symbol_filenames |
6050 | }; | |
6051 | ||
4485a1c1 | 6052 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 6053 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
6054 | |
6055 | template <typename T> | |
6056 | static gdb::array_view<const gdb_byte> | |
6057 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
6058 | { | |
6059 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
6060 | ||
96b79293 | 6061 | if (section->empty ()) |
4485a1c1 SM |
6062 | return {}; |
6063 | ||
6064 | /* Older elfutils strip versions could keep the section in the main | |
6065 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 6066 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
6067 | return {}; |
6068 | ||
96b79293 | 6069 | section->read (obj); |
4485a1c1 | 6070 | |
8bebfcda PA |
6071 | /* dwarf2_section_info::size is a bfd_size_type, while |
6072 | gdb::array_view works with size_t. On 32-bit hosts, with | |
6073 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
6074 | is 32-bit. So we need an explicit narrowing conversion here. | |
6075 | This is fine, because it's impossible to allocate or mmap an | |
6076 | array/buffer larger than what size_t can represent. */ | |
6077 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
6078 | } |
6079 | ||
87d6a7aa SM |
6080 | /* Lookup the index cache for the contents of the index associated to |
6081 | DWARF2_OBJ. */ | |
6082 | ||
6083 | static gdb::array_view<const gdb_byte> | |
5989a64e | 6084 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
6085 | { |
6086 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
6087 | if (build_id == nullptr) | |
6088 | return {}; | |
6089 | ||
6090 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 6091 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
6092 | } |
6093 | ||
6094 | /* Same as the above, but for DWZ. */ | |
6095 | ||
6096 | static gdb::array_view<const gdb_byte> | |
6097 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
6098 | { | |
6099 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
6100 | if (build_id == nullptr) | |
6101 | return {}; | |
6102 | ||
6103 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6104 | } | |
6105 | ||
3c0aa29a | 6106 | /* See symfile.h. */ |
9291a0cd | 6107 | |
3c0aa29a PA |
6108 | bool |
6109 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6110 | { |
976ca316 SM |
6111 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6112 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 6113 | |
9291a0cd TT |
6114 | /* If we're about to read full symbols, don't bother with the |
6115 | indices. In this case we also don't care if some other debug | |
6116 | format is making psymtabs, because they are all about to be | |
6117 | expanded anyway. */ | |
6118 | if ((objfile->flags & OBJF_READNOW)) | |
6119 | { | |
17ee85fc TT |
6120 | /* When using READNOW, the using_index flag (set below) indicates that |
6121 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
6122 | if (per_bfd->using_index) | |
6123 | { | |
6124 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6125 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6126 | return true; |
6127 | } | |
6128 | ||
6129 | per_bfd->using_index = 1; | |
976ca316 SM |
6130 | create_all_comp_units (per_objfile); |
6131 | create_all_type_units (per_objfile); | |
17ee85fc TT |
6132 | per_bfd->quick_file_names_table |
6133 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 6134 | per_objfile->resize_symtabs (); |
9291a0cd | 6135 | |
17ee85fc TT |
6136 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
6137 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 6138 | { |
17ee85fc | 6139 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 6140 | |
17ee85fc | 6141 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 6142 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
6143 | } |
6144 | ||
6145 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6146 | these functions will be no-ops because we will have expanded | |
6147 | all symtabs. */ | |
3c0aa29a PA |
6148 | *index_kind = dw_index_kind::GDB_INDEX; |
6149 | return true; | |
9291a0cd TT |
6150 | } |
6151 | ||
17ee85fc TT |
6152 | /* Was a debug names index already read when we processed an objfile sharing |
6153 | PER_BFD? */ | |
6154 | if (per_bfd->debug_names_table != nullptr) | |
6155 | { | |
6156 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
f8c41851 | 6157 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6158 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6159 | return true; |
6160 | } | |
6161 | ||
6162 | /* Was a GDB index already read when we processed an objfile sharing | |
6163 | PER_BFD? */ | |
6164 | if (per_bfd->index_table != nullptr) | |
6165 | { | |
6166 | *index_kind = dw_index_kind::GDB_INDEX; | |
f8c41851 | 6167 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6168 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6169 | return true; |
6170 | } | |
6171 | ||
efb763a5 SM |
6172 | /* There might already be partial symtabs built for this BFD. This happens |
6173 | when loading the same binary twice with the index-cache enabled. If so, | |
6174 | don't try to read an index. The objfile / per_objfile initialization will | |
6175 | be completed in dwarf2_build_psymtabs, in the standard partial symtabs | |
6176 | code path. */ | |
6177 | if (per_bfd->partial_symtabs != nullptr) | |
6178 | return false; | |
6179 | ||
976ca316 | 6180 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a PA |
6181 | { |
6182 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
976ca316 | 6183 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6184 | return true; |
6185 | } | |
927aa2e7 | 6186 | |
976ca316 | 6187 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 6188 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 6189 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
6190 | { |
6191 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6192 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6193 | return true; |
6194 | } | |
9291a0cd | 6195 | |
87d6a7aa | 6196 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 6197 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
6198 | get_gdb_index_contents_from_cache, |
6199 | get_gdb_index_contents_from_cache_dwz)) | |
6200 | { | |
6201 | global_index_cache.hit (); | |
6202 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6203 | per_objfile->resize_symtabs (); |
87d6a7aa SM |
6204 | return true; |
6205 | } | |
6206 | ||
6207 | global_index_cache.miss (); | |
3c0aa29a | 6208 | return false; |
9291a0cd TT |
6209 | } |
6210 | ||
6211 | \f | |
6212 | ||
dce234bc PP |
6213 | /* Build a partial symbol table. */ |
6214 | ||
6215 | void | |
f29dff0a | 6216 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6217 | { |
976ca316 SM |
6218 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6219 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
6220 | |
6221 | if (per_bfd->partial_symtabs != nullptr) | |
6222 | { | |
6223 | /* Partial symbols were already read, so now we can simply | |
6224 | attach them. */ | |
6225 | objfile->partial_symtabs = per_bfd->partial_symtabs; | |
976ca316 | 6226 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6227 | return; |
6228 | } | |
c9bf0622 | 6229 | |
a70b8144 | 6230 | try |
c9bf0622 TT |
6231 | { |
6232 | /* This isn't really ideal: all the data we allocate on the | |
6233 | objfile's obstack is still uselessly kept around. However, | |
6234 | freeing it seems unsafe. */ | |
906768f9 | 6235 | psymtab_discarder psymtabs (objfile); |
976ca316 | 6236 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 6237 | psymtabs.keep (); |
87d6a7aa | 6238 | |
976ca316 | 6239 | per_objfile->resize_symtabs (); |
af758d11 | 6240 | |
87d6a7aa | 6241 | /* (maybe) store an index in the cache. */ |
976ca316 | 6242 | global_index_cache.store (per_objfile); |
c9bf0622 | 6243 | } |
230d2906 | 6244 | catch (const gdb_exception_error &except) |
492d29ea PA |
6245 | { |
6246 | exception_print (gdb_stderr, except); | |
6247 | } | |
17ee85fc TT |
6248 | |
6249 | /* Finish by setting the local reference to partial symtabs, so that | |
6250 | we don't try to read them again if reading another objfile with the same | |
6251 | BFD. If we can't in fact share, this won't make a difference anyway as | |
6252 | the dwarf2_per_bfd object won't be shared. */ | |
6253 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
c906108c | 6254 | } |
c906108c | 6255 | |
3b80fe9b DE |
6256 | /* Find the base address of the compilation unit for range lists and |
6257 | location lists. It will normally be specified by DW_AT_low_pc. | |
6258 | In DWARF-3 draft 4, the base address could be overridden by | |
6259 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6260 | compilation units with discontinuous ranges. */ | |
6261 | ||
6262 | static void | |
6263 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6264 | { | |
6265 | struct attribute *attr; | |
6266 | ||
2b24b6e4 | 6267 | cu->base_address.reset (); |
3b80fe9b DE |
6268 | |
6269 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6270 | if (attr != nullptr) |
95f982e5 | 6271 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6272 | else |
6273 | { | |
6274 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6275 | if (attr != nullptr) |
95f982e5 | 6276 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6277 | } |
6278 | } | |
6279 | ||
36586728 TT |
6280 | /* Helper function that returns the proper abbrev section for |
6281 | THIS_CU. */ | |
6282 | ||
6283 | static struct dwarf2_section_info * | |
6284 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6285 | { | |
6286 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6287 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6288 | |
6289 | if (this_cu->is_dwz) | |
c3699833 | 6290 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6291 | else |
c3699833 | 6292 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6293 | |
6294 | return abbrev; | |
6295 | } | |
6296 | ||
f4dc4d17 DE |
6297 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6298 | ||
6299 | static sect_offset | |
976ca316 | 6300 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6301 | struct dwarf2_section_info *section, |
9c541725 | 6302 | sect_offset sect_off) |
f4dc4d17 | 6303 | { |
96b79293 | 6304 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6305 | const gdb_byte *info_ptr; |
ac298888 | 6306 | unsigned int initial_length_size, offset_size; |
43988095 | 6307 | uint16_t version; |
f4dc4d17 | 6308 | |
976ca316 | 6309 | section->read (per_objfile->objfile); |
9c541725 | 6310 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6311 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6312 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6313 | info_ptr += initial_length_size; |
6314 | ||
6315 | version = read_2_bytes (abfd, info_ptr); | |
6316 | info_ptr += 2; | |
6317 | if (version >= 5) | |
6318 | { | |
6319 | /* Skip unit type and address size. */ | |
6320 | info_ptr += 2; | |
6321 | } | |
6322 | ||
24aa364d | 6323 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6324 | } |
6325 | ||
b83470bf TT |
6326 | /* A partial symtab that is used only for include files. */ |
6327 | struct dwarf2_include_psymtab : public partial_symtab | |
6328 | { | |
6329 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6330 | : partial_symtab (filename, objfile) | |
6331 | { | |
6332 | } | |
6333 | ||
6334 | void read_symtab (struct objfile *objfile) override | |
6335 | { | |
194d088f TV |
6336 | /* It's an include file, no symbols to read for it. |
6337 | Everything is in the includer symtab. */ | |
6338 | ||
6339 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6340 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6341 | model the includer. But if we go the regular route of calling | |
6342 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6343 | to expand the includer, we'll only use expand_psymtab on the includer | |
6344 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6345 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6346 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6347 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6348 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6349 | } |
6350 | ||
6351 | void expand_psymtab (struct objfile *objfile) override | |
6352 | { | |
194d088f TV |
6353 | /* This is not called by read_symtab, and should not be called by any |
6354 | expand_dependencies. */ | |
6355 | gdb_assert (false); | |
b83470bf TT |
6356 | } |
6357 | ||
5717c425 | 6358 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6359 | { |
5717c425 | 6360 | return includer ()->readin_p (objfile); |
b83470bf TT |
6361 | } |
6362 | ||
5717c425 | 6363 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6364 | { |
6365 | return nullptr; | |
6366 | } | |
6367 | ||
6368 | private: | |
194d088f TV |
6369 | partial_symtab *includer () const |
6370 | { | |
6371 | /* An include psymtab has exactly one dependency: the psymtab that | |
6372 | includes it. */ | |
6373 | gdb_assert (this->number_of_dependencies == 1); | |
6374 | return this->dependencies[0]; | |
6375 | } | |
b83470bf TT |
6376 | }; |
6377 | ||
aaa75496 JB |
6378 | /* Allocate a new partial symtab for file named NAME and mark this new |
6379 | partial symtab as being an include of PST. */ | |
6380 | ||
6381 | static void | |
891813be | 6382 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
dda83cd7 | 6383 | struct objfile *objfile) |
aaa75496 | 6384 | { |
b83470bf | 6385 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6386 | |
fbd9ab74 | 6387 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6388 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6389 | |
a9342b62 | 6390 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6391 | subpst->dependencies[0] = pst; |
6392 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6393 | } |
6394 | ||
6395 | /* Read the Line Number Program data and extract the list of files | |
6396 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6397 | partial symtab for each of these included files. */ |
aaa75496 JB |
6398 | |
6399 | static void | |
6400 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6401 | struct die_info *die, |
891813be | 6402 | dwarf2_psymtab *pst) |
aaa75496 | 6403 | { |
fff8551c | 6404 | line_header_up lh; |
d85a05f0 | 6405 | struct attribute *attr; |
aaa75496 | 6406 | |
d85a05f0 | 6407 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e TT |
6408 | if (attr != nullptr && attr->form_is_unsigned ()) |
6409 | lh = dwarf_decode_line_header ((sect_offset) attr->as_unsigned (), cu); | |
aaa75496 JB |
6410 | if (lh == NULL) |
6411 | return; /* No linetable, so no includes. */ | |
6412 | ||
79748972 TT |
6413 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6414 | that we pass in the raw text_low here; that is ok because we're | |
6415 | only decoding the line table to make include partial symtabs, and | |
6416 | so the addresses aren't really used. */ | |
4ae976d1 | 6417 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6418 | pst->raw_text_low (), 1); |
aaa75496 JB |
6419 | } |
6420 | ||
348e048f | 6421 | static hashval_t |
52dc124a | 6422 | hash_signatured_type (const void *item) |
348e048f | 6423 | { |
9a3c8263 SM |
6424 | const struct signatured_type *sig_type |
6425 | = (const struct signatured_type *) item; | |
9a619af0 | 6426 | |
348e048f | 6427 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6428 | return sig_type->signature; |
348e048f DE |
6429 | } |
6430 | ||
6431 | static int | |
52dc124a | 6432 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6433 | { |
9a3c8263 SM |
6434 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6435 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6436 | |
348e048f DE |
6437 | return lhs->signature == rhs->signature; |
6438 | } | |
6439 | ||
1fd400ff TT |
6440 | /* Allocate a hash table for signatured types. */ |
6441 | ||
b0b6a987 | 6442 | static htab_up |
298e9637 | 6443 | allocate_signatured_type_table () |
1fd400ff | 6444 | { |
b0b6a987 TT |
6445 | return htab_up (htab_create_alloc (41, |
6446 | hash_signatured_type, | |
6447 | eq_signatured_type, | |
6448 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6449 | } |
6450 | ||
d467dd73 | 6451 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6452 | |
6453 | static int | |
d467dd73 | 6454 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6455 | { |
9a3c8263 | 6456 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6457 | std::vector<signatured_type *> *all_type_units |
6458 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6459 | |
b2bdb8cf | 6460 | all_type_units->push_back (sigt); |
1fd400ff TT |
6461 | |
6462 | return 1; | |
6463 | } | |
6464 | ||
78d4d2c5 | 6465 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6466 | and fill them into TYPES_HTAB. It will process only type units, |
6467 | therefore DW_UT_type. */ | |
c88ee1f0 | 6468 | |
78d4d2c5 | 6469 | static void |
976ca316 | 6470 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6471 | struct dwo_file *dwo_file, |
b0b6a987 | 6472 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6473 | rcuh_kind section_kind) |
348e048f | 6474 | { |
976ca316 | 6475 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6476 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6477 | bfd *abfd; |
6478 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6479 | |
4bdcc0c1 DE |
6480 | abbrev_section = (dwo_file != NULL |
6481 | ? &dwo_file->sections.abbrev | |
976ca316 | 6482 | : &per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6483 | |
6f738b01 SM |
6484 | dwarf_read_debug_printf ("Reading %s for %s:", |
6485 | section->get_name (), | |
6486 | abbrev_section->get_file_name ()); | |
09406207 | 6487 | |
96b79293 | 6488 | section->read (objfile); |
78d4d2c5 | 6489 | info_ptr = section->buffer; |
348e048f | 6490 | |
78d4d2c5 JK |
6491 | if (info_ptr == NULL) |
6492 | return; | |
348e048f | 6493 | |
78d4d2c5 JK |
6494 | /* We can't set abfd until now because the section may be empty or |
6495 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6496 | abfd = section->get_bfd_owner (); |
348e048f | 6497 | |
c0ab21c2 TT |
6498 | /* We don't use cutu_reader here because we don't need to read |
6499 | any dies: the signature is in the header. */ | |
3019eac3 | 6500 | |
78d4d2c5 JK |
6501 | end_ptr = info_ptr + section->size; |
6502 | while (info_ptr < end_ptr) | |
6503 | { | |
78d4d2c5 JK |
6504 | struct signatured_type *sig_type; |
6505 | struct dwo_unit *dwo_tu; | |
6506 | void **slot; | |
6507 | const gdb_byte *ptr = info_ptr; | |
6508 | struct comp_unit_head header; | |
6509 | unsigned int length; | |
8b70b953 | 6510 | |
9c541725 | 6511 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6512 | |
a49dd8dd JK |
6513 | /* Initialize it due to a false compiler warning. */ |
6514 | header.signature = -1; | |
9c541725 | 6515 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6516 | |
78d4d2c5 JK |
6517 | /* We need to read the type's signature in order to build the hash |
6518 | table, but we don't need anything else just yet. */ | |
348e048f | 6519 | |
976ca316 | 6520 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6521 | abbrev_section, ptr, section_kind); |
348e048f | 6522 | |
4057dfde | 6523 | length = header.get_length (); |
6caca83c | 6524 | |
78d4d2c5 JK |
6525 | /* Skip dummy type units. */ |
6526 | if (ptr >= info_ptr + length | |
43988095 | 6527 | || peek_abbrev_code (abfd, ptr) == 0 |
d2854d8d CT |
6528 | || (header.unit_type != DW_UT_type |
6529 | && header.unit_type != DW_UT_split_type)) | |
78d4d2c5 JK |
6530 | { |
6531 | info_ptr += length; | |
6532 | continue; | |
6533 | } | |
dee91e82 | 6534 | |
78d4d2c5 JK |
6535 | if (types_htab == NULL) |
6536 | { | |
6537 | if (dwo_file) | |
298e9637 | 6538 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6539 | else |
298e9637 | 6540 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6541 | } |
8b70b953 | 6542 | |
78d4d2c5 JK |
6543 | if (dwo_file) |
6544 | { | |
6545 | sig_type = NULL; | |
976ca316 | 6546 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
78d4d2c5 | 6547 | dwo_tu->dwo_file = dwo_file; |
43988095 | 6548 | dwo_tu->signature = header.signature; |
9c541725 | 6549 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6550 | dwo_tu->section = section; |
9c541725 | 6551 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6552 | dwo_tu->length = length; |
6553 | } | |
6554 | else | |
6555 | { | |
6556 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6557 | The real type_offset is in the DWO file. */ | |
6558 | dwo_tu = NULL; | |
976ca316 | 6559 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6560 | sig_type->signature = header.signature; |
9c541725 | 6561 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6562 | sig_type->per_cu.is_debug_types = 1; |
6563 | sig_type->per_cu.section = section; | |
9c541725 | 6564 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6565 | sig_type->per_cu.length = length; |
6566 | } | |
6567 | ||
b0b6a987 | 6568 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6569 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6570 | INSERT); | |
6571 | gdb_assert (slot != NULL); | |
6572 | if (*slot != NULL) | |
6573 | { | |
9c541725 | 6574 | sect_offset dup_sect_off; |
0349ea22 | 6575 | |
3019eac3 DE |
6576 | if (dwo_file) |
6577 | { | |
78d4d2c5 JK |
6578 | const struct dwo_unit *dup_tu |
6579 | = (const struct dwo_unit *) *slot; | |
6580 | ||
9c541725 | 6581 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6582 | } |
6583 | else | |
6584 | { | |
78d4d2c5 JK |
6585 | const struct signatured_type *dup_tu |
6586 | = (const struct signatured_type *) *slot; | |
6587 | ||
9c541725 | 6588 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6589 | } |
8b70b953 | 6590 | |
b98664d3 | 6591 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6592 | " the entry at offset %s, signature %s"), |
6593 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6594 | hex_string (header.signature)); |
78d4d2c5 JK |
6595 | } |
6596 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6597 | |
6f738b01 SM |
6598 | dwarf_read_debug_printf_v (" offset %s, signature %s", |
6599 | sect_offset_str (sect_off), | |
6600 | hex_string (header.signature)); | |
3019eac3 | 6601 | |
78d4d2c5 JK |
6602 | info_ptr += length; |
6603 | } | |
6604 | } | |
3019eac3 | 6605 | |
78d4d2c5 JK |
6606 | /* Create the hash table of all entries in the .debug_types |
6607 | (or .debug_types.dwo) section(s). | |
6608 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6609 | otherwise it is NULL. | |
b3c8eb43 | 6610 | |
78d4d2c5 | 6611 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6612 | |
78d4d2c5 | 6613 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6614 | |
78d4d2c5 | 6615 | static void |
976ca316 | 6616 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6617 | struct dwo_file *dwo_file, |
fd5866f6 | 6618 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6619 | htab_up &types_htab) |
78d4d2c5 | 6620 | { |
fd5866f6 | 6621 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6622 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6623 | rcuh_kind::TYPE); | |
3019eac3 DE |
6624 | } |
6625 | ||
6626 | /* Create the hash table of all entries in the .debug_types section, | |
6627 | and initialize all_type_units. | |
6628 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6629 | otherwise non-zero. */ | |
6630 | ||
6631 | static int | |
976ca316 | 6632 | create_all_type_units (dwarf2_per_objfile *per_objfile) |
3019eac3 | 6633 | { |
b0b6a987 | 6634 | htab_up types_htab; |
3019eac3 | 6635 | |
976ca316 SM |
6636 | create_debug_type_hash_table (per_objfile, NULL, &per_objfile->per_bfd->info, |
6637 | types_htab, rcuh_kind::COMPILE); | |
6638 | create_debug_types_hash_table (per_objfile, NULL, per_objfile->per_bfd->types, | |
6639 | types_htab); | |
3019eac3 DE |
6640 | if (types_htab == NULL) |
6641 | { | |
976ca316 | 6642 | per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6643 | return 0; |
6644 | } | |
6645 | ||
976ca316 | 6646 | per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6647 | |
976ca316 SM |
6648 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
6649 | per_objfile->per_bfd->all_type_units.reserve | |
6650 | (htab_elements (per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6651 | |
976ca316 | 6652 | htab_traverse_noresize (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6653 | add_signatured_type_cu_to_table, |
976ca316 | 6654 | &per_objfile->per_bfd->all_type_units); |
1fd400ff | 6655 | |
348e048f DE |
6656 | return 1; |
6657 | } | |
6658 | ||
5989a64e | 6659 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6660 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6661 | Otherwise we find one. */ | |
6662 | ||
6663 | static struct signatured_type * | |
976ca316 | 6664 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6665 | { |
976ca316 SM |
6666 | if (per_objfile->per_bfd->all_type_units.size () |
6667 | == per_objfile->per_bfd->all_type_units.capacity ()) | |
6668 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6669 | |
976ca316 | 6670 | signatured_type *sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6671 | |
976ca316 | 6672 | per_objfile->resize_symtabs (); |
af758d11 | 6673 | |
976ca316 | 6674 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6675 | sig_type->signature = sig; |
6676 | sig_type->per_cu.is_debug_types = 1; | |
976ca316 | 6677 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6678 | { |
6679 | sig_type->per_cu.v.quick = | |
976ca316 | 6680 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6681 | struct dwarf2_per_cu_quick_data); |
6682 | } | |
6683 | ||
6684 | if (slot == NULL) | |
6685 | { | |
976ca316 | 6686 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6687 | sig_type, INSERT); |
6688 | } | |
6689 | gdb_assert (*slot == NULL); | |
6690 | *slot = sig_type; | |
6691 | /* The rest of sig_type must be filled in by the caller. */ | |
6692 | return sig_type; | |
6693 | } | |
6694 | ||
a2ce51a0 DE |
6695 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6696 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6697 | ||
6698 | static void | |
976ca316 | 6699 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6700 | struct signatured_type *sig_entry, |
6701 | struct dwo_unit *dwo_entry) | |
6702 | { | |
976ca316 | 6703 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6704 | |
7ee85ab1 | 6705 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6706 | gdb_assert (! sig_entry->per_cu.queued); |
976ca316 | 6707 | gdb_assert (per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6708 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6709 | { |
6710 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
976ca316 | 6711 | gdb_assert (!per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6712 | } |
6713 | else | |
6714 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6715 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6716 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6717 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6718 | gdb_assert (sig_entry->dwo_unit == NULL); |
6719 | ||
6720 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6721 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6722 | sig_entry->per_cu.length = dwo_entry->length; |
6723 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6724 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6725 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6726 | sig_entry->dwo_unit = dwo_entry; | |
6727 | } | |
6728 | ||
6729 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6730 | If we haven't read the TU yet, create the signatured_type data structure |
6731 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6732 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6733 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6734 | containing that CU. Otherwise we could end up reading several other DWO | |
6735 | files (due to comdat folding) to process the transitive closure of all the | |
6736 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6737 | type signature that it needs. | |
a2ce51a0 DE |
6738 | We only do this for .gdb_index because in the psymtab case we already have |
6739 | to read all the DWOs to build the type unit groups. */ | |
6740 | ||
6741 | static struct signatured_type * | |
6742 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6743 | { | |
976ca316 | 6744 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6745 | struct dwo_file *dwo_file; |
6746 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6747 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6748 | void **slot; |
a2ce51a0 | 6749 | |
976ca316 | 6750 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6751 | |
6aa5f3a6 DE |
6752 | /* If TU skeletons have been removed then we may not have read in any |
6753 | TUs yet. */ | |
976ca316 SM |
6754 | if (per_objfile->per_bfd->signatured_types == NULL) |
6755 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6756 | |
6757 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6758 | Use the global signatured_types array to do our own comdat-folding |
6759 | of types. If this is the first time we're reading this TU, and | |
6760 | the TU has an entry in .gdb_index, replace the recorded data from | |
6761 | .gdb_index with this TU. */ | |
a2ce51a0 | 6762 | |
a2ce51a0 | 6763 | find_sig_entry.signature = sig; |
976ca316 | 6764 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6765 | &find_sig_entry, INSERT); |
9a3c8263 | 6766 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6767 | |
6768 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6769 | read. Don't reassign the global entry to point to this DWO if that's |
6770 | the case. Also note that if the TU is already being read, it may not | |
6771 | have come from a DWO, the program may be a mix of Fission-compiled | |
6772 | code and non-Fission-compiled code. */ | |
6773 | ||
6774 | /* Have we already tried to read this TU? | |
6775 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6776 | needn't exist in the global table yet). */ | |
6777 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6778 | return sig_entry; |
6779 | ||
6aa5f3a6 DE |
6780 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6781 | dwo_unit of the TU itself. */ | |
6782 | dwo_file = cu->dwo_unit->dwo_file; | |
6783 | ||
a2ce51a0 DE |
6784 | /* Ok, this is the first time we're reading this TU. */ |
6785 | if (dwo_file->tus == NULL) | |
6786 | return NULL; | |
6787 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6788 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6789 | &find_dwo_entry); | |
a2ce51a0 DE |
6790 | if (dwo_entry == NULL) |
6791 | return NULL; | |
6792 | ||
6aa5f3a6 DE |
6793 | /* If the global table doesn't have an entry for this TU, add one. */ |
6794 | if (sig_entry == NULL) | |
976ca316 | 6795 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6796 | |
976ca316 | 6797 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6798 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6799 | return sig_entry; |
6800 | } | |
6801 | ||
a2ce51a0 DE |
6802 | /* Subroutine of lookup_signatured_type. |
6803 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6804 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6805 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6806 | |
6807 | static struct signatured_type * | |
6808 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6809 | { | |
976ca316 SM |
6810 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6811 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6812 | struct dwo_unit *dwo_entry; |
6813 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6814 | void **slot; |
a2ce51a0 | 6815 | |
976ca316 | 6816 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6817 | gdb_assert (dwp_file != NULL); |
6818 | ||
6aa5f3a6 DE |
6819 | /* If TU skeletons have been removed then we may not have read in any |
6820 | TUs yet. */ | |
976ca316 SM |
6821 | if (per_objfile->per_bfd->signatured_types == NULL) |
6822 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6823 | |
6aa5f3a6 | 6824 | find_sig_entry.signature = sig; |
976ca316 | 6825 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6826 | &find_sig_entry, INSERT); |
9a3c8263 | 6827 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6828 | |
6829 | /* Have we already tried to read this TU? | |
6830 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6831 | needn't exist in the global table yet). */ | |
6832 | if (sig_entry != NULL) | |
6833 | return sig_entry; | |
6834 | ||
a2ce51a0 DE |
6835 | if (dwp_file->tus == NULL) |
6836 | return NULL; | |
976ca316 SM |
6837 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6838 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6839 | if (dwo_entry == NULL) |
6840 | return NULL; | |
6841 | ||
976ca316 SM |
6842 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6843 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6844 | |
a2ce51a0 DE |
6845 | return sig_entry; |
6846 | } | |
6847 | ||
380bca97 | 6848 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6849 | Returns NULL if signature SIG is not present in the table. |
6850 | It is up to the caller to complain about this. */ | |
348e048f DE |
6851 | |
6852 | static struct signatured_type * | |
a2ce51a0 | 6853 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6854 | { |
976ca316 | 6855 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6856 | |
976ca316 | 6857 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6858 | { |
6859 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6860 | These cases require special processing. */ | |
976ca316 | 6861 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6862 | return lookup_dwo_signatured_type (cu, sig); |
6863 | else | |
6864 | return lookup_dwp_signatured_type (cu, sig); | |
6865 | } | |
6866 | else | |
6867 | { | |
6868 | struct signatured_type find_entry, *entry; | |
348e048f | 6869 | |
976ca316 | 6870 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6871 | return NULL; |
6872 | find_entry.signature = sig; | |
9a3c8263 | 6873 | entry = ((struct signatured_type *) |
976ca316 | 6874 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6875 | &find_entry)); |
a2ce51a0 DE |
6876 | return entry; |
6877 | } | |
348e048f | 6878 | } |
18a8505e | 6879 | |
42e7ad6c | 6880 | /* Low level DIE reading support. */ |
348e048f | 6881 | |
d85a05f0 DJ |
6882 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6883 | ||
6884 | static void | |
6885 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6886 | struct dwarf2_cu *cu, |
3019eac3 | 6887 | struct dwarf2_section_info *section, |
685af9cd TT |
6888 | struct dwo_file *dwo_file, |
6889 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6890 | { |
fceca515 | 6891 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6892 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6893 | reader->cu = cu; |
3019eac3 | 6894 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6895 | reader->die_section = section; |
6896 | reader->buffer = section->buffer; | |
f664829e | 6897 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6898 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6899 | } |
6900 | ||
c0ab21c2 | 6901 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6902 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6903 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6904 | already. |
6905 | ||
6906 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6907 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6908 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6909 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6910 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6911 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6912 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6913 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6914 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6915 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6916 | kept around for at least as long as *RESULT_READER. | |
6917 | ||
b0c7bfa9 DE |
6918 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6919 | ||
6920 | static int | |
4ab09049 | 6921 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6922 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6923 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6924 | const char *stub_comp_dir, |
b0c7bfa9 | 6925 | struct die_reader_specs *result_reader, |
d521ce57 | 6926 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6927 | struct die_info **result_comp_unit_die, |
685af9cd | 6928 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6929 | { |
976ca316 | 6930 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6931 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6932 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6933 | bfd *abfd; |
d521ce57 | 6934 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6935 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6936 | int i,num_extra_attrs; | |
6937 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6938 | struct die_info *comp_unit_die; |
6939 | ||
b0aeadb3 DE |
6940 | /* At most one of these may be provided. */ |
6941 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6942 | |
b0c7bfa9 DE |
6943 | /* These attributes aren't processed until later: |
6944 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6945 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6946 | referenced later. However, these attributes are found in the stub | |
6947 | which we won't have later. In order to not impose this complication | |
6948 | on the rest of the code, we read them here and copy them to the | |
6949 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6950 | |
6951 | stmt_list = NULL; | |
6952 | low_pc = NULL; | |
6953 | high_pc = NULL; | |
6954 | ranges = NULL; | |
6955 | comp_dir = NULL; | |
6956 | ||
6957 | if (stub_comp_unit_die != NULL) | |
6958 | { | |
6959 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6960 | DWO file. */ | |
4ab09049 | 6961 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6962 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6963 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6964 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6965 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6966 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6967 | ||
a39fdb41 | 6968 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6969 | |
18a8505e AT |
6970 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6971 | here (if needed). We need the value before we can process | |
6972 | DW_AT_ranges. */ | |
a39fdb41 | 6973 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6974 | } |
a2ce51a0 DE |
6975 | else if (stub_comp_dir != NULL) |
6976 | { | |
6977 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
fe56917a | 6978 | comp_dir = OBSTACK_ZALLOC (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6979 | comp_dir->name = DW_AT_comp_dir; |
6980 | comp_dir->form = DW_FORM_string; | |
c6481205 | 6981 | comp_dir->set_string_noncanonical (stub_comp_dir); |
a2ce51a0 | 6982 | } |
b0c7bfa9 DE |
6983 | |
6984 | /* Set up for reading the DWO CU/TU. */ | |
6985 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6986 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6987 | section->read (objfile); |
6988 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6989 | begin_info_ptr = info_ptr = (section->buffer |
6990 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6991 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6992 | |
4ab09049 | 6993 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6994 | { |
4ab09049 | 6995 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6996 | |
976ca316 SM |
6997 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6998 | section, dwo_abbrev_section, | |
43988095 | 6999 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7000 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7001 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7002 | { |
7003 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7004 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7005 | hex_string (sig_type->signature), |
43988095 | 7006 | hex_string (cu->header.signature), |
9d8780f0 | 7007 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7008 | bfd_get_filename (abfd)); |
7009 | } | |
9c541725 | 7010 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7011 | /* For DWOs coming from DWP files, we don't know the CU length |
7012 | nor the type's offset in the TU until now. */ | |
4057dfde | 7013 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 7014 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7015 | |
7016 | /* Establish the type offset that can be used to lookup the type. | |
7017 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7018 | sig_type->type_offset_in_section |
7019 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7020 | } |
7021 | else | |
7022 | { | |
976ca316 SM |
7023 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7024 | section, dwo_abbrev_section, | |
43988095 | 7025 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7026 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7027 | /* For DWOs coming from DWP files, we don't know the CU length |
7028 | until now. */ | |
4057dfde | 7029 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
7030 | } |
7031 | ||
606decb2 | 7032 | dwo_abbrev_section->read (objfile); |
685af9cd | 7033 | *result_dwo_abbrev_table |
606decb2 | 7034 | = abbrev_table::read (dwo_abbrev_section, cu->header.abbrev_sect_off); |
685af9cd TT |
7035 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
7036 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7037 | |
7038 | /* Read in the die, but leave space to copy over the attributes | |
7039 | from the stub. This has the benefit of simplifying the rest of | |
7040 | the code - all the work to maintain the illusion of a single | |
7041 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7042 | num_extra_attrs = ((stmt_list != NULL) | |
7043 | + (low_pc != NULL) | |
7044 | + (high_pc != NULL) | |
7045 | + (ranges != NULL) | |
7046 | + (comp_dir != NULL)); | |
7047 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 7048 | num_extra_attrs); |
b0c7bfa9 DE |
7049 | |
7050 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7051 | comp_unit_die = *result_comp_unit_die; | |
7052 | i = comp_unit_die->num_attrs; | |
7053 | if (stmt_list != NULL) | |
7054 | comp_unit_die->attrs[i++] = *stmt_list; | |
7055 | if (low_pc != NULL) | |
7056 | comp_unit_die->attrs[i++] = *low_pc; | |
7057 | if (high_pc != NULL) | |
7058 | comp_unit_die->attrs[i++] = *high_pc; | |
7059 | if (ranges != NULL) | |
7060 | comp_unit_die->attrs[i++] = *ranges; | |
7061 | if (comp_dir != NULL) | |
7062 | comp_unit_die->attrs[i++] = *comp_dir; | |
7063 | comp_unit_die->num_attrs += num_extra_attrs; | |
7064 | ||
b4f54984 | 7065 | if (dwarf_die_debug) |
bf6af496 DE |
7066 | { |
7067 | fprintf_unfiltered (gdb_stdlog, | |
7068 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 7069 | section->get_name (), |
bf6af496 DE |
7070 | (unsigned) (begin_info_ptr - section->buffer), |
7071 | bfd_get_filename (abfd)); | |
b4f54984 | 7072 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7073 | } |
7074 | ||
b0c7bfa9 DE |
7075 | /* Skip dummy compilation units. */ |
7076 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7077 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7078 | return 0; | |
7079 | ||
7080 | *result_info_ptr = info_ptr; | |
7081 | return 1; | |
7082 | } | |
7083 | ||
a084a2a6 AT |
7084 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
7085 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
7086 | signature is part of the header. */ | |
7087 | static gdb::optional<ULONGEST> | |
7088 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
7089 | { | |
7090 | if (cu->header.version >= 5) | |
7091 | return cu->header.signature; | |
7092 | struct attribute *attr; | |
7093 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
529908cb | 7094 | if (attr == nullptr || !attr->form_is_unsigned ()) |
a084a2a6 | 7095 | return gdb::optional<ULONGEST> (); |
529908cb | 7096 | return attr->as_unsigned (); |
a084a2a6 AT |
7097 | } |
7098 | ||
c0ab21c2 | 7099 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7100 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 7101 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7102 | |
7103 | static struct dwo_unit * | |
4ab09049 | 7104 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 7105 | { |
4ab09049 | 7106 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 7107 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7108 | const char *comp_dir; |
b0c7bfa9 | 7109 | |
a2ce51a0 DE |
7110 | gdb_assert (cu != NULL); |
7111 | ||
b0c7bfa9 | 7112 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7113 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7114 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 7115 | |
4ab09049 SM |
7116 | if (per_cu->is_debug_types) |
7117 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
7118 | else |
7119 | { | |
a084a2a6 | 7120 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 7121 | |
a084a2a6 | 7122 | if (!signature.has_value ()) |
b0c7bfa9 DE |
7123 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7124 | " [in module %s]"), | |
4ab09049 SM |
7125 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
7126 | ||
7127 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
7128 | } |
7129 | ||
b0c7bfa9 DE |
7130 | return dwo_unit; |
7131 | } | |
7132 | ||
c0ab21c2 | 7133 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7134 | See it for a description of the parameters. |
fcd3b13d | 7135 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7136 | |
c0ab21c2 | 7137 | void |
9e021579 SM |
7138 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
7139 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 7140 | dwarf2_cu *existing_cu) |
a2ce51a0 | 7141 | { |
a2ce51a0 | 7142 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7143 | |
7144 | /* Verify we can do the following downcast, and that we have the | |
7145 | data we need. */ | |
7146 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7147 | sig_type = (struct signatured_type *) this_cu; | |
7148 | gdb_assert (sig_type->dwo_unit != NULL); | |
7149 | ||
2e671100 SM |
7150 | dwarf2_cu *cu; |
7151 | ||
7152 | if (existing_cu != nullptr) | |
6aa5f3a6 | 7153 | { |
2e671100 SM |
7154 | cu = existing_cu; |
7155 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7156 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7157 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7158 | } |
7159 | else | |
7160 | { | |
7188ed02 | 7161 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7162 | in per_objfile yet. */ |
7188ed02 | 7163 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
9e021579 | 7164 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 7165 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
7166 | } |
7167 | ||
7168 | /* A future optimization, if needed, would be to use an existing | |
7169 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7170 | could share abbrev tables. */ | |
a2ce51a0 | 7171 | |
2e671100 | 7172 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7173 | NULL /* stub_comp_unit_die */, |
7174 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 7175 | this, &info_ptr, |
3e225074 | 7176 | &comp_unit_die, |
c0ab21c2 | 7177 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7178 | { |
7179 | /* Dummy die. */ | |
c0ab21c2 | 7180 | dummy_p = true; |
a2ce51a0 | 7181 | } |
a2ce51a0 DE |
7182 | } |
7183 | ||
fd820528 | 7184 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7185 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7186 | |
f4dc4d17 DE |
7187 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7188 | Otherwise the table specified in the comp unit header is read in and used. | |
7189 | This is an optimization for when we already have the abbrev table. | |
7190 | ||
2e671100 SM |
7191 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
7192 | allocated. */ | |
aaa75496 | 7193 | |
ab432490 | 7194 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7195 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 7196 | struct abbrev_table *abbrev_table, |
2e671100 | 7197 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
7198 | bool skip_partial) |
7199 | : die_reader_specs {}, | |
6751ebae | 7200 | m_this_cu (this_cu) |
c906108c | 7201 | { |
976ca316 | 7202 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7203 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7204 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 7205 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7206 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7207 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7208 | /* Non-zero if CU currently points to a DWO file and we need to |
7209 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7210 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7211 | int rereading_dwo_cu = 0; |
c906108c | 7212 | |
b4f54984 | 7213 | if (dwarf_die_debug) |
9d8780f0 | 7214 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7215 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7216 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7217 | |
a2ce51a0 DE |
7218 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7219 | file (instead of going through the stub), short-circuit all of this. */ | |
7220 | if (this_cu->reading_dwo_directly) | |
7221 | { | |
7222 | /* Narrow down the scope of possibilities to have to understand. */ | |
7223 | gdb_assert (this_cu->is_debug_types); | |
7224 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 7225 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
7226 | return; |
7227 | } | |
7228 | ||
dee91e82 | 7229 | /* This is cheap if the section is already read in. */ |
96b79293 | 7230 | section->read (objfile); |
dee91e82 | 7231 | |
9c541725 | 7232 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7233 | |
7234 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7235 | |
2e671100 SM |
7236 | dwarf2_cu *cu; |
7237 | ||
7238 | if (existing_cu != nullptr) | |
dee91e82 | 7239 | { |
2e671100 | 7240 | cu = existing_cu; |
42e7ad6c DE |
7241 | /* If this CU is from a DWO file we need to start over, we need to |
7242 | refetch the attributes from the skeleton CU. | |
7243 | This could be optimized by retrieving those attributes from when we | |
7244 | were here the first time: the previous comp_unit_die was stored in | |
7245 | comp_unit_obstack. But there's no data yet that we need this | |
7246 | optimization. */ | |
7247 | if (cu->dwo_unit != NULL) | |
7248 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7249 | } |
7250 | else | |
7251 | { | |
7188ed02 | 7252 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7253 | in per_objfile yet. */ |
976ca316 SM |
7254 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
7255 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 7256 | cu = m_new_cu.get (); |
42e7ad6c | 7257 | } |
dee91e82 | 7258 | |
b0c7bfa9 | 7259 | /* Get the header. */ |
9c541725 | 7260 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7261 | { |
7262 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7263 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7264 | } |
7265 | else | |
7266 | { | |
3019eac3 | 7267 | if (this_cu->is_debug_types) |
dee91e82 | 7268 | { |
976ca316 SM |
7269 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7270 | section, abbrev_section, | |
7271 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 7272 | |
42e7ad6c DE |
7273 | /* Since per_cu is the first member of struct signatured_type, |
7274 | we can go from a pointer to one to a pointer to the other. */ | |
7275 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7276 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7277 | gdb_assert (sig_type->type_offset_in_tu |
7278 | == cu->header.type_cu_offset_in_tu); | |
7279 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7280 | |
42e7ad6c DE |
7281 | /* LENGTH has not been set yet for type units if we're |
7282 | using .gdb_index. */ | |
4057dfde | 7283 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7284 | |
7285 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7286 | sig_type->type_offset_in_section = |
7287 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7288 | |
7289 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7290 | } |
7291 | else | |
7292 | { | |
976ca316 SM |
7293 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7294 | section, abbrev_section, | |
43988095 JK |
7295 | info_ptr, |
7296 | rcuh_kind::COMPILE); | |
dee91e82 | 7297 | |
9c541725 | 7298 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7299 | if (this_cu->length == 0) |
7300 | this_cu->length = cu->header.get_length (); | |
7301 | else | |
7302 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7303 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7304 | } |
7305 | } | |
10b3939b | 7306 | |
6caca83c | 7307 | /* Skip dummy compilation units. */ |
dee91e82 | 7308 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7309 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7310 | { |
7311 | dummy_p = true; | |
7312 | return; | |
7313 | } | |
6caca83c | 7314 | |
433df2d4 DE |
7315 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7316 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7317 | done. */ |
f4dc4d17 | 7318 | if (abbrev_table != NULL) |
685af9cd TT |
7319 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7320 | else | |
f4dc4d17 | 7321 | { |
606decb2 | 7322 | abbrev_section->read (objfile); |
c0ab21c2 | 7323 | m_abbrev_table_holder |
606decb2 | 7324 | = abbrev_table::read (abbrev_section, cu->header.abbrev_sect_off); |
c0ab21c2 | 7325 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7326 | } |
af703f96 | 7327 | |
dee91e82 | 7328 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7329 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7330 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7331 | |
58f0c718 | 7332 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7333 | { |
7334 | dummy_p = true; | |
7335 | return; | |
7336 | } | |
58f0c718 | 7337 | |
b0c7bfa9 | 7338 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7339 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7340 | table from the DWO file and pass the ownership over to us. It will be | |
7341 | referenced from READER, so we must make sure to free it after we're done | |
7342 | with READER. | |
7343 | ||
b0c7bfa9 DE |
7344 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7345 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7346 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7347 | if (dwo_name != nullptr) |
3019eac3 | 7348 | { |
3019eac3 | 7349 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7350 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7351 | |
3e225074 | 7352 | if (comp_unit_die->has_children) |
6a506a2d | 7353 | { |
b98664d3 | 7354 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7355 | " has children (offset %s) [in module %s]"), |
7356 | sect_offset_str (this_cu->sect_off), | |
7357 | bfd_get_filename (abfd)); | |
6a506a2d | 7358 | } |
4ab09049 | 7359 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7360 | if (dwo_unit != NULL) |
3019eac3 | 7361 | { |
4ab09049 | 7362 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7363 | comp_unit_die, NULL, |
c0ab21c2 | 7364 | this, &info_ptr, |
3e225074 | 7365 | &dwo_comp_unit_die, |
c0ab21c2 | 7366 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7367 | { |
7368 | /* Dummy die. */ | |
c0ab21c2 | 7369 | dummy_p = true; |
6a506a2d DE |
7370 | return; |
7371 | } | |
7372 | comp_unit_die = dwo_comp_unit_die; | |
7373 | } | |
7374 | else | |
7375 | { | |
7376 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7377 | the stub. A complaint has already been logged. There's | |
7378 | not much more we can do except pass on the stub DIE to | |
7379 | die_reader_func. We don't want to throw an error on bad | |
7380 | debug info. */ | |
3019eac3 DE |
7381 | } |
7382 | } | |
c0ab21c2 | 7383 | } |
3019eac3 | 7384 | |
6751ebae TT |
7385 | void |
7386 | cutu_reader::keep () | |
c0ab21c2 | 7387 | { |
b0c7bfa9 | 7388 | /* Done, clean up. */ |
6751ebae TT |
7389 | gdb_assert (!dummy_p); |
7390 | if (m_new_cu != NULL) | |
348e048f | 7391 | { |
7188ed02 | 7392 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
dda83cd7 | 7393 | now. */ |
7188ed02 SM |
7394 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; |
7395 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7396 | } |
dee91e82 DE |
7397 | } |
7398 | ||
18a8505e AT |
7399 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7400 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7401 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7402 | |
7403 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7404 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7405 | |
7406 | We fill in THIS_CU->length. | |
7407 | ||
dee91e82 | 7408 | THIS_CU->cu is always freed when done. |
3019eac3 | 7409 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7410 | to care whether it refers to the "main" CU or the DWO CU. |
7411 | ||
7412 | When parent_cu is passed, it is used to provide a default value for | |
7413 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7414 | |
ab432490 | 7415 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7416 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
7417 | struct dwarf2_cu *parent_cu, |
7418 | struct dwo_file *dwo_file) | |
7419 | : die_reader_specs {}, | |
7420 | m_this_cu (this_cu) | |
dee91e82 | 7421 | { |
976ca316 | 7422 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7423 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7424 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7425 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7426 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7427 | |
b4f54984 | 7428 | if (dwarf_die_debug) |
9d8780f0 | 7429 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7430 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7431 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7432 | |
976ca316 | 7433 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7434 | |
33e80786 DE |
7435 | abbrev_section = (dwo_file != NULL |
7436 | ? &dwo_file->sections.abbrev | |
7437 | : get_abbrev_section_for_cu (this_cu)); | |
7438 | ||
dee91e82 | 7439 | /* This is cheap if the section is already read in. */ |
96b79293 | 7440 | section->read (objfile); |
dee91e82 | 7441 | |
976ca316 | 7442 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 7443 | |
9c541725 | 7444 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
7445 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
7446 | section, abbrev_section, info_ptr, | |
43988095 JK |
7447 | (this_cu->is_debug_types |
7448 | ? rcuh_kind::TYPE | |
7449 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7450 | |
18a8505e AT |
7451 | if (parent_cu != nullptr) |
7452 | { | |
c0ab21c2 TT |
7453 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7454 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7455 | } |
4057dfde | 7456 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7457 | |
7458 | /* Skip dummy compilation units. */ | |
7459 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7460 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7461 | { |
7462 | dummy_p = true; | |
7463 | return; | |
7464 | } | |
72bf9492 | 7465 | |
606decb2 | 7466 | abbrev_section->read (objfile); |
c0ab21c2 | 7467 | m_abbrev_table_holder |
606decb2 | 7468 | = abbrev_table::read (abbrev_section, m_new_cu->header.abbrev_sect_off); |
dee91e82 | 7469 | |
c0ab21c2 TT |
7470 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7471 | m_abbrev_table_holder.get ()); | |
3e225074 | 7472 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7473 | } |
7474 | ||
0018ea6f DE |
7475 | \f |
7476 | /* Type Unit Groups. | |
dee91e82 | 7477 | |
0018ea6f DE |
7478 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7479 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7480 | so that all types coming from the same compilation (.o file) are grouped | |
7481 | together. A future step could be to put the types in the same symtab as | |
7482 | the CU the types ultimately came from. */ | |
ff013f42 | 7483 | |
f4dc4d17 DE |
7484 | static hashval_t |
7485 | hash_type_unit_group (const void *item) | |
7486 | { | |
9a3c8263 SM |
7487 | const struct type_unit_group *tu_group |
7488 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7489 | |
094b34ac | 7490 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7491 | } |
348e048f DE |
7492 | |
7493 | static int | |
f4dc4d17 | 7494 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7495 | { |
9a3c8263 SM |
7496 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7497 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7498 | |
094b34ac | 7499 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7500 | } |
348e048f | 7501 | |
f4dc4d17 DE |
7502 | /* Allocate a hash table for type unit groups. */ |
7503 | ||
eaa5fa8b | 7504 | static htab_up |
298e9637 | 7505 | allocate_type_unit_groups_table () |
f4dc4d17 | 7506 | { |
eaa5fa8b TT |
7507 | return htab_up (htab_create_alloc (3, |
7508 | hash_type_unit_group, | |
7509 | eq_type_unit_group, | |
7510 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7511 | } |
dee91e82 | 7512 | |
f4dc4d17 DE |
7513 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7514 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7515 | of any one psymtab grow too big. */ | |
7516 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7517 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7518 | |
094b34ac | 7519 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7520 | Create the type_unit_group object used to hold one or more TUs. */ |
7521 | ||
7522 | static struct type_unit_group * | |
094b34ac | 7523 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7524 | { |
976ca316 SM |
7525 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7526 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
094b34ac | 7527 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7528 | struct type_unit_group *tu_group; |
f4dc4d17 | 7529 | |
976ca316 | 7530 | tu_group = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, type_unit_group); |
094b34ac | 7531 | per_cu = &tu_group->per_cu; |
1859c670 | 7532 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7533 | |
1859c670 | 7534 | if (per_bfd->using_index) |
094b34ac | 7535 | { |
1859c670 | 7536 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7537 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7538 | } |
7539 | else | |
7540 | { | |
9c541725 | 7541 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7542 | dwarf2_psymtab *pst; |
528e1572 | 7543 | std::string name; |
094b34ac DE |
7544 | |
7545 | /* Give the symtab a useful name for debug purposes. */ | |
7546 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7547 | name = string_printf ("<type_units_%d>", |
7548 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7549 | else |
528e1572 | 7550 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7551 | |
976ca316 | 7552 | pst = create_partial_symtab (per_cu, per_objfile, name.c_str ()); |
6d94535f | 7553 | pst->anonymous = true; |
094b34ac | 7554 | } |
f4dc4d17 | 7555 | |
094b34ac | 7556 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7557 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7558 | |
7559 | return tu_group; | |
7560 | } | |
7561 | ||
094b34ac DE |
7562 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7563 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7564 | |
7565 | static struct type_unit_group * | |
ff39bb5e | 7566 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7567 | { |
976ca316 SM |
7568 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7569 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7570 | struct type_unit_group *tu_group; |
7571 | void **slot; | |
7572 | unsigned int line_offset; | |
7573 | struct type_unit_group type_unit_group_for_lookup; | |
7574 | ||
976ca316 SM |
7575 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7576 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7577 | |
7578 | /* Do we need to create a new group, or can we use an existing one? */ | |
7579 | ||
529908cb | 7580 | if (stmt_list != nullptr && stmt_list->form_is_unsigned ()) |
f4dc4d17 | 7581 | { |
529908cb | 7582 | line_offset = stmt_list->as_unsigned (); |
f4dc4d17 DE |
7583 | ++tu_stats->nr_symtab_sharers; |
7584 | } | |
7585 | else | |
7586 | { | |
7587 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7588 | We can do various things here like create one group per TU or | |
7589 | spread them over multiple groups to split up the expansion work. | |
7590 | To avoid worst case scenarios (too many groups or too large groups) | |
7591 | we, umm, group them in bunches. */ | |
7592 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7593 | | (tu_stats->nr_stmt_less_type_units | |
7594 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7595 | ++tu_stats->nr_stmt_less_type_units; | |
7596 | } | |
7597 | ||
094b34ac | 7598 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7599 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7600 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7601 | &type_unit_group_for_lookup, INSERT); |
7602 | if (*slot != NULL) | |
7603 | { | |
9a3c8263 | 7604 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7605 | gdb_assert (tu_group != NULL); |
7606 | } | |
7607 | else | |
7608 | { | |
9c541725 | 7609 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7610 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7611 | *slot = tu_group; |
7612 | ++tu_stats->nr_symtabs; | |
7613 | } | |
7614 | ||
7615 | return tu_group; | |
7616 | } | |
0018ea6f DE |
7617 | \f |
7618 | /* Partial symbol tables. */ | |
7619 | ||
7620 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7621 | ||
7622 | The caller must fill in the following details: | |
7623 | dirname, textlow, texthigh. */ | |
7624 | ||
891813be | 7625 | static dwarf2_psymtab * |
7aa104c4 SM |
7626 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7627 | dwarf2_per_objfile *per_objfile, | |
7628 | const char *name) | |
0018ea6f | 7629 | { |
7aa104c4 | 7630 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7631 | dwarf2_psymtab *pst; |
0018ea6f | 7632 | |
9f4e76a4 | 7633 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7634 | |
6d94535f | 7635 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7636 | |
7637 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7638 | per_cu->v.psymtab = pst; |
7639 | ||
7640 | return pst; | |
7641 | } | |
7642 | ||
c0ab21c2 | 7643 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7644 | |
7645 | static void | |
7646 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7647 | const gdb_byte *info_ptr, |
0018ea6f | 7648 | struct die_info *comp_unit_die, |
c0ab21c2 | 7649 | enum language pretend_language) |
0018ea6f DE |
7650 | { |
7651 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7652 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7653 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7654 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7655 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7656 | CORE_ADDR baseaddr; |
7657 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7658 | dwarf2_psymtab *pst; |
3a2b436a | 7659 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7660 | const char *filename; |
0018ea6f | 7661 | |
0018ea6f DE |
7662 | gdb_assert (! per_cu->is_debug_types); |
7663 | ||
c0ab21c2 | 7664 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7665 | |
0018ea6f | 7666 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7667 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7668 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7669 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7670 | if (filename == NULL) | |
0018ea6f | 7671 | filename = ""; |
2e927613 TV |
7672 | else if (strcmp (filename, artificial) == 0) |
7673 | { | |
7674 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7675 | sect_offset_str (per_cu->sect_off), |
7676 | (char *) NULL)); | |
2e927613 TV |
7677 | filename = debug_filename.get (); |
7678 | } | |
0018ea6f | 7679 | |
7aa104c4 | 7680 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7681 | |
7682 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7683 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7684 | |
b3b3bada | 7685 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7686 | |
7687 | dwarf2_find_base_address (comp_unit_die, cu); | |
7688 | ||
7689 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7690 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7691 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7692 | &best_highpc, cu, pst); | |
7693 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7694 | { |
7695 | CORE_ADDR low | |
7696 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7697 | - baseaddr); | |
7698 | CORE_ADDR high | |
7699 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7700 | - baseaddr - 1); | |
7701 | /* Store the contiguous range if it is not empty; it can be | |
7702 | empty for CUs with no code. */ | |
d320c2b5 TT |
7703 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7704 | low, high, pst); | |
79748972 | 7705 | } |
0018ea6f DE |
7706 | |
7707 | /* Check if comp unit has_children. | |
7708 | If so, read the rest of the partial symbols from this comp unit. | |
7709 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7710 | if (comp_unit_die->has_children) |
0018ea6f DE |
7711 | { |
7712 | struct partial_die_info *first_die; | |
7713 | CORE_ADDR lowpc, highpc; | |
7714 | ||
7715 | lowpc = ((CORE_ADDR) -1); | |
7716 | highpc = ((CORE_ADDR) 0); | |
7717 | ||
7718 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7719 | ||
7720 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7721 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7722 | |
7723 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7724 | complaints from `maint check'. */ | |
7725 | if (lowpc == ((CORE_ADDR) -1)) | |
7726 | lowpc = highpc; | |
7727 | ||
7728 | /* If the compilation unit didn't have an explicit address range, | |
7729 | then use the information extracted from its child dies. */ | |
e385593e | 7730 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7731 | { |
7732 | best_lowpc = lowpc; | |
7733 | best_highpc = highpc; | |
7734 | } | |
7735 | } | |
4ae976d1 | 7736 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7737 | best_lowpc + baseaddr) |
7738 | - baseaddr); | |
4ae976d1 | 7739 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7740 | best_highpc + baseaddr) |
7741 | - baseaddr); | |
0018ea6f | 7742 | |
ae7754b2 | 7743 | pst->end (); |
0018ea6f | 7744 | |
ae640021 | 7745 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7746 | { |
7747 | int i; | |
ae640021 | 7748 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7749 | |
7750 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7751 | post-pass. */ | |
7752 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7753 | pst->dependencies |
7754 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7755 | for (i = 0; i < len; ++i) |
7756 | { | |
7757 | pst->dependencies[i] | |
7758 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7759 | } | |
0018ea6f | 7760 | |
ae640021 | 7761 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7762 | } |
7763 | ||
7764 | /* Get the list of files included in the current compilation unit, | |
7765 | and build a psymtab for each of them. */ | |
7766 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7767 | ||
6f738b01 SM |
7768 | dwarf_read_debug_printf ("Psymtab for %s unit @%s: %s - %s" |
7769 | ", %d global, %d static syms", | |
7770 | per_cu->is_debug_types ? "type" : "comp", | |
7771 | sect_offset_str (per_cu->sect_off), | |
7772 | paddress (gdbarch, pst->text_low (objfile)), | |
7773 | paddress (gdbarch, pst->text_high (objfile)), | |
7774 | (int) pst->global_psymbols.size (), | |
7775 | (int) pst->static_psymbols.size ()); | |
0018ea6f DE |
7776 | } |
7777 | ||
7778 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7779 | Process compilation unit THIS_CU for a psymtab. */ | |
7780 | ||
7781 | static void | |
ab432490 SM |
7782 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7783 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7784 | bool want_partial_unit, |
b93601f3 | 7785 | enum language pretend_language) |
0018ea6f DE |
7786 | { |
7787 | /* If this compilation unit was already read in, free the | |
7788 | cached copy in order to read it in again. This is | |
7789 | necessary because we skipped some symbols when we first | |
7790 | read in the compilation unit (see load_partial_dies). | |
7791 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7792 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7793 | |
2e671100 | 7794 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7795 | |
58990295 TV |
7796 | switch (reader.comp_unit_die->tag) |
7797 | { | |
7798 | case DW_TAG_compile_unit: | |
7799 | this_cu->unit_type = DW_UT_compile; | |
7800 | break; | |
7801 | case DW_TAG_partial_unit: | |
7802 | this_cu->unit_type = DW_UT_partial; | |
7803 | break; | |
7804 | default: | |
7805 | abort (); | |
7806 | } | |
7807 | ||
c0ab21c2 | 7808 | if (reader.dummy_p) |
f1902523 | 7809 | { |
c0ab21c2 | 7810 | /* Nothing. */ |
f1902523 | 7811 | } |
c0ab21c2 | 7812 | else if (this_cu->is_debug_types) |
3e225074 TT |
7813 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7814 | reader.comp_unit_die); | |
135f5437 TT |
7815 | else if (want_partial_unit |
7816 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7817 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7818 | reader.comp_unit_die, | |
c0ab21c2 | 7819 | pretend_language); |
0018ea6f | 7820 | |
7188ed02 | 7821 | this_cu->lang = reader.cu->language; |
58990295 | 7822 | |
0018ea6f | 7823 | /* Age out any secondary CUs. */ |
7188ed02 | 7824 | per_objfile->age_comp_units (); |
0018ea6f | 7825 | } |
f4dc4d17 DE |
7826 | |
7827 | /* Reader function for build_type_psymtabs. */ | |
7828 | ||
7829 | static void | |
7830 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7831 | const gdb_byte *info_ptr, |
3e225074 | 7832 | struct die_info *type_unit_die) |
f4dc4d17 | 7833 | { |
976ca316 | 7834 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7835 | struct dwarf2_cu *cu = reader->cu; |
7836 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7837 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7838 | struct type_unit_group *tu_group; |
7839 | struct attribute *attr; | |
7840 | struct partial_die_info *first_die; | |
7841 | CORE_ADDR lowpc, highpc; | |
891813be | 7842 | dwarf2_psymtab *pst; |
f4dc4d17 | 7843 | |
0186c6a7 DE |
7844 | gdb_assert (per_cu->is_debug_types); |
7845 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7846 | |
3e225074 | 7847 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7848 | return; |
7849 | ||
052c8bb8 | 7850 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7851 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7852 | |
df07e2c7 | 7853 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7854 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7855 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7856 | |
7857 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7858 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7859 | pst->anonymous = true; |
f4dc4d17 DE |
7860 | |
7861 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7862 | ||
7863 | lowpc = (CORE_ADDR) -1; | |
7864 | highpc = (CORE_ADDR) 0; | |
7865 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7866 | ||
ae7754b2 | 7867 | pst->end (); |
f4dc4d17 DE |
7868 | } |
7869 | ||
73051182 DE |
7870 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7871 | ||
7872 | struct tu_abbrev_offset | |
7873 | { | |
b2bdb8cf SM |
7874 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7875 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7876 | {} | |
7877 | ||
7878 | signatured_type *sig_type; | |
73051182 DE |
7879 | sect_offset abbrev_offset; |
7880 | }; | |
7881 | ||
484cf504 | 7882 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7883 | |
484cf504 TT |
7884 | static bool |
7885 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7886 | const struct tu_abbrev_offset &b) | |
73051182 | 7887 | { |
484cf504 | 7888 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7889 | } |
7890 | ||
7891 | /* Efficiently read all the type units. | |
7892 | This does the bulk of the work for build_type_psymtabs. | |
7893 | ||
7894 | The efficiency is because we sort TUs by the abbrev table they use and | |
7895 | only read each abbrev table once. In one program there are 200K TUs | |
7896 | sharing 8K abbrev tables. | |
7897 | ||
7898 | The main purpose of this function is to support building the | |
5989a64e | 7899 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7900 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7901 | can collapse the search space by grouping them by stmt_list. | |
7902 | The savings can be significant, in the same program from above the 200K TUs | |
7903 | share 8K stmt_list tables. | |
7904 | ||
7905 | FUNC is expected to call get_type_unit_group, which will create the | |
7906 | struct type_unit_group if necessary and add it to | |
5989a64e | 7907 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7908 | |
7909 | static void | |
976ca316 | 7910 | build_type_psymtabs_1 (dwarf2_per_objfile *per_objfile) |
73051182 | 7911 | { |
976ca316 | 7912 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7913 | abbrev_table_up abbrev_table; |
73051182 | 7914 | sect_offset abbrev_offset; |
73051182 DE |
7915 | |
7916 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7917 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7918 | |
976ca316 | 7919 | if (per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7920 | return; |
7921 | ||
7922 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7923 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7924 | read each abbrev table in. | |
7925 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7926 | This is simpler and efficient enough for now. | |
7927 | ||
7928 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7929 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7930 | stmt_list value too so in practice this should work well. | |
7931 | ||
7932 | The basic algorithm here is: | |
7933 | ||
7934 | sort TUs by abbrev table | |
7935 | for each TU with same abbrev table: | |
7936 | read abbrev table if first user | |
7937 | read TU top level DIE | |
7938 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7939 | call FUNC */ | |
7940 | ||
6f738b01 | 7941 | dwarf_read_debug_printf ("Building type unit groups ..."); |
73051182 DE |
7942 | |
7943 | /* Sort in a separate table to maintain the order of all_type_units | |
7944 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7945 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
976ca316 | 7946 | sorted_by_abbrev.reserve (per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7947 | |
976ca316 | 7948 | for (signatured_type *sig_type : per_objfile->per_bfd->all_type_units) |
b2bdb8cf | 7949 | sorted_by_abbrev.emplace_back |
976ca316 | 7950 | (sig_type, read_abbrev_offset (per_objfile, sig_type->per_cu.section, |
b2bdb8cf | 7951 | sig_type->per_cu.sect_off)); |
73051182 | 7952 | |
484cf504 TT |
7953 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7954 | sort_tu_by_abbrev_offset); | |
73051182 | 7955 | |
9c541725 | 7956 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7957 | |
b2bdb8cf | 7958 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7959 | { |
73051182 DE |
7960 | /* Switch to the next abbrev table if necessary. */ |
7961 | if (abbrev_table == NULL | |
b2bdb8cf | 7962 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7963 | { |
b2bdb8cf | 7964 | abbrev_offset = tu.abbrev_offset; |
606decb2 | 7965 | per_objfile->per_bfd->abbrev.read (per_objfile->objfile); |
73051182 | 7966 | abbrev_table = |
606decb2 | 7967 | abbrev_table::read (&per_objfile->per_bfd->abbrev, abbrev_offset); |
73051182 DE |
7968 | ++tu_stats->nr_uniq_abbrev_tables; |
7969 | } | |
7970 | ||
976ca316 | 7971 | cutu_reader reader (&tu.sig_type->per_cu, per_objfile, |
2e671100 | 7972 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7973 | if (!reader.dummy_p) |
7974 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7975 | reader.comp_unit_die); |
73051182 | 7976 | } |
6aa5f3a6 | 7977 | } |
73051182 | 7978 | |
6aa5f3a6 DE |
7979 | /* Print collected type unit statistics. */ |
7980 | ||
7981 | static void | |
976ca316 | 7982 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7983 | { |
976ca316 | 7984 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 | 7985 | |
6f738b01 SM |
7986 | dwarf_read_debug_printf ("Type unit statistics:"); |
7987 | dwarf_read_debug_printf (" %zu TUs", | |
7988 | per_objfile->per_bfd->all_type_units.size ()); | |
7989 | dwarf_read_debug_printf (" %d uniq abbrev tables", | |
7990 | tu_stats->nr_uniq_abbrev_tables); | |
7991 | dwarf_read_debug_printf (" %d symtabs from stmt_list entries", | |
7992 | tu_stats->nr_symtabs); | |
7993 | dwarf_read_debug_printf (" %d symtab sharers", | |
7994 | tu_stats->nr_symtab_sharers); | |
7995 | dwarf_read_debug_printf (" %d type units without a stmt_list", | |
7996 | tu_stats->nr_stmt_less_type_units); | |
7997 | dwarf_read_debug_printf (" %d all_type_units reallocs", | |
7998 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7999 | } |
8000 | ||
f4dc4d17 DE |
8001 | /* Traversal function for build_type_psymtabs. */ |
8002 | ||
8003 | static int | |
8004 | build_type_psymtab_dependencies (void **slot, void *info) | |
8005 | { | |
976ca316 SM |
8006 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
8007 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 | 8008 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
094b34ac | 8009 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 8010 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 8011 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
8012 | int i; |
8013 | ||
8014 | gdb_assert (len > 0); | |
197400e8 | 8015 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
8016 | |
8017 | pst->number_of_dependencies = len; | |
a9342b62 | 8018 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 8019 | for (i = 0; i < len; ++i) |
f4dc4d17 | 8020 | { |
df07e2c7 | 8021 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
8022 | gdb_assert (iter->per_cu.is_debug_types); |
8023 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8024 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8025 | } |
8026 | ||
df07e2c7 AB |
8027 | delete tu_group->tus; |
8028 | tu_group->tus = nullptr; | |
348e048f DE |
8029 | |
8030 | return 1; | |
8031 | } | |
8032 | ||
8033 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8034 | Build partial symbol tables for the .debug_types comp-units. */ | |
8035 | ||
8036 | static void | |
976ca316 | 8037 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
348e048f | 8038 | { |
976ca316 | 8039 | if (! create_all_type_units (per_objfile)) |
348e048f DE |
8040 | return; |
8041 | ||
976ca316 | 8042 | build_type_psymtabs_1 (per_objfile); |
6aa5f3a6 | 8043 | } |
f4dc4d17 | 8044 | |
6aa5f3a6 DE |
8045 | /* Traversal function for process_skeletonless_type_unit. |
8046 | Read a TU in a DWO file and build partial symbols for it. */ | |
8047 | ||
8048 | static int | |
8049 | process_skeletonless_type_unit (void **slot, void *info) | |
8050 | { | |
8051 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 8052 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
8053 | struct signatured_type find_entry, *entry; |
8054 | ||
8055 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8056 | ||
976ca316 SM |
8057 | if (per_objfile->per_bfd->signatured_types == NULL) |
8058 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
8059 | |
8060 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 8061 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 8062 | &find_entry, INSERT); |
6aa5f3a6 DE |
8063 | /* If we've already seen this type there's nothing to do. What's happening |
8064 | is we're doing our own version of comdat-folding here. */ | |
8065 | if (*slot != NULL) | |
8066 | return 1; | |
8067 | ||
8068 | /* This does the job that create_all_type_units would have done for | |
8069 | this TU. */ | |
976ca316 SM |
8070 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
8071 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8072 | *slot = entry; |
8073 | ||
8074 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
976ca316 | 8075 | cutu_reader reader (&entry->per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
8076 | if (!reader.dummy_p) |
8077 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 8078 | reader.comp_unit_die); |
6aa5f3a6 DE |
8079 | |
8080 | return 1; | |
8081 | } | |
8082 | ||
8083 | /* Traversal function for process_skeletonless_type_units. */ | |
8084 | ||
8085 | static int | |
8086 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8087 | { | |
8088 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8089 | ||
8090 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
8091 | htab_traverse_noresize (dwo_file->tus.get (), |
8092 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
8093 | |
8094 | return 1; | |
8095 | } | |
8096 | ||
8097 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8098 | This is needed in case a TU was emitted without its skeleton. | |
8099 | Note: This can't be done until we know what all the DWO files are. */ | |
8100 | ||
8101 | static void | |
976ca316 | 8102 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
8103 | { |
8104 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
8105 | if (get_dwp_file (per_objfile) == NULL |
8106 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 8107 | { |
976ca316 | 8108 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 8109 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 8110 | per_objfile); |
6aa5f3a6 | 8111 | } |
348e048f DE |
8112 | } |
8113 | ||
ed2dc618 | 8114 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8115 | |
8116 | static void | |
976ca316 | 8117 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 8118 | { |
976ca316 | 8119 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 8120 | { |
891813be | 8121 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8122 | |
36586728 TT |
8123 | if (pst == NULL) |
8124 | continue; | |
8125 | ||
b76e467d | 8126 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8127 | { |
8128 | /* Set the 'user' field only if it is not already set. */ | |
8129 | if (pst->dependencies[j]->user == NULL) | |
8130 | pst->dependencies[j]->user = pst; | |
8131 | } | |
8132 | } | |
8133 | } | |
8134 | ||
93311388 DE |
8135 | /* Build the partial symbol table by doing a quick pass through the |
8136 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8137 | |
93311388 | 8138 | static void |
976ca316 | 8139 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 8140 | { |
976ca316 | 8141 | struct objfile *objfile = per_objfile->objfile; |
93311388 | 8142 | |
6f738b01 SM |
8143 | dwarf_read_debug_printf ("Building psymtabs of objfile %s ...", |
8144 | objfile_name (objfile)); | |
45cfd468 | 8145 | |
76935768 | 8146 | scoped_restore restore_reading_psyms |
976ca316 | 8147 | = make_scoped_restore (&per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 8148 | true); |
98bfdba5 | 8149 | |
976ca316 | 8150 | per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 8151 | |
93311388 DE |
8152 | /* Any cached compilation units will be linked by the per-objfile |
8153 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 8154 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 8155 | |
976ca316 | 8156 | build_type_psymtabs (per_objfile); |
348e048f | 8157 | |
976ca316 | 8158 | create_all_comp_units (per_objfile); |
c906108c | 8159 | |
60606b2c TT |
8160 | /* Create a temporary address map on a temporary obstack. We later |
8161 | copy this to the final obstack. */ | |
8268c778 | 8162 | auto_obstack temp_obstack; |
791afaa2 TT |
8163 | |
8164 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8165 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8166 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8167 | |
976ca316 | 8168 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
8169 | { |
8170 | if (per_cu->v.psymtab != NULL) | |
8171 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
8172 | continue; | |
976ca316 | 8173 | process_psymtab_comp_unit (per_cu, per_objfile, false, |
ab432490 | 8174 | language_minimal); |
3d5afab3 | 8175 | } |
ff013f42 | 8176 | |
6aa5f3a6 | 8177 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 8178 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
8179 | |
8180 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
976ca316 | 8181 | if (per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 8182 | { |
976ca316 SM |
8183 | htab_traverse_noresize (per_objfile->per_bfd->type_unit_groups.get (), |
8184 | build_type_psymtab_dependencies, per_objfile); | |
6aa5f3a6 DE |
8185 | } |
8186 | ||
6f738b01 | 8187 | if (dwarf_read_debug > 0) |
976ca316 | 8188 | print_tu_stats (per_objfile); |
6aa5f3a6 | 8189 | |
976ca316 | 8190 | set_partial_user (per_objfile); |
95554aad | 8191 | |
d320c2b5 TT |
8192 | objfile->partial_symtabs->psymtabs_addrmap |
8193 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8194 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8195 | /* At this point we want to keep the address map. */ |
8196 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8197 | |
6f738b01 SM |
8198 | dwarf_read_debug_printf ("Done building psymtabs of %s", |
8199 | objfile_name (objfile)); | |
ae038cb0 DJ |
8200 | } |
8201 | ||
dee91e82 DE |
8202 | /* Load the partial DIEs for a secondary CU into memory. |
8203 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8204 | |
dee91e82 | 8205 | static void |
ab432490 | 8206 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
8207 | dwarf2_per_objfile *per_objfile, |
8208 | dwarf2_cu *existing_cu) | |
dee91e82 | 8209 | { |
2e671100 | 8210 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
8211 | |
8212 | if (!reader.dummy_p) | |
8213 | { | |
8214 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8215 | language_minimal); | |
8216 | ||
8217 | /* Check if comp unit has_children. | |
8218 | If so, read the rest of the partial symbols from this comp unit. | |
8219 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8220 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8221 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8222 | |
8223 | reader.keep (); | |
c0ab21c2 | 8224 | } |
ae038cb0 DJ |
8225 | } |
8226 | ||
ae038cb0 | 8227 | static void |
976ca316 | 8228 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 8229 | struct dwarf2_section_info *section, |
f1902523 | 8230 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8231 | unsigned int is_dwz) |
ae038cb0 | 8232 | { |
d521ce57 | 8233 | const gdb_byte *info_ptr; |
976ca316 | 8234 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 8235 | |
6f738b01 SM |
8236 | dwarf_read_debug_printf ("Reading %s for %s", |
8237 | section->get_name (), | |
8238 | section->get_file_name ()); | |
bf6af496 | 8239 | |
96b79293 | 8240 | section->read (objfile); |
ae038cb0 | 8241 | |
36586728 | 8242 | info_ptr = section->buffer; |
6e70227d | 8243 | |
36586728 | 8244 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8245 | { |
ae038cb0 | 8246 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8247 | |
9c541725 | 8248 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8249 | |
f1902523 | 8250 | comp_unit_head cu_header; |
976ca316 | 8251 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 SM |
8252 | abbrev_section, info_ptr, |
8253 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8254 | |
8255 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8256 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 8257 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8258 | else |
8259 | { | |
976ca316 | 8260 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8261 | sig_type->signature = cu_header.signature; |
8262 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8263 | this_cu = &sig_type->per_cu; | |
8264 | } | |
8265 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8266 | this_cu->sect_off = sect_off; |
f1902523 | 8267 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8268 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8269 | this_cu->section = section; |
ae038cb0 | 8270 | |
976ca316 | 8271 | per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8272 | |
8273 | info_ptr = info_ptr + this_cu->length; | |
8274 | } | |
36586728 TT |
8275 | } |
8276 | ||
8277 | /* Create a list of all compilation units in OBJFILE. | |
8278 | This is only done for -readnow and building partial symtabs. */ | |
8279 | ||
8280 | static void | |
976ca316 | 8281 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 8282 | { |
976ca316 SM |
8283 | gdb_assert (per_objfile->per_bfd->all_comp_units.empty ()); |
8284 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, | |
8285 | &per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8286 | |
976ca316 | 8287 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 8288 | if (dwz != NULL) |
976ca316 | 8289 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1); |
c906108c SS |
8290 | } |
8291 | ||
5734ee8b | 8292 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8293 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8294 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8295 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8296 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8297 | |
72bf9492 DJ |
8298 | static void |
8299 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8300 | CORE_ADDR *highpc, int set_addrmap, |
8301 | struct dwarf2_cu *cu) | |
c906108c | 8302 | { |
72bf9492 | 8303 | struct partial_die_info *pdi; |
c906108c | 8304 | |
91c24f0a DC |
8305 | /* Now, march along the PDI's, descending into ones which have |
8306 | interesting children but skipping the children of the other ones, | |
8307 | until we reach the end of the compilation unit. */ | |
c906108c | 8308 | |
72bf9492 | 8309 | pdi = first_die; |
91c24f0a | 8310 | |
72bf9492 DJ |
8311 | while (pdi != NULL) |
8312 | { | |
52356b79 | 8313 | pdi->fixup (cu); |
c906108c | 8314 | |
f55ee35c | 8315 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8316 | children, so we need to look at them. Ditto for anonymous |
8317 | enums. */ | |
933c6fe4 | 8318 | |
7d00ffec | 8319 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8320 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8321 | || pdi->tag == DW_TAG_imported_unit |
8322 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8323 | { |
72bf9492 | 8324 | switch (pdi->tag) |
c906108c SS |
8325 | { |
8326 | case DW_TAG_subprogram: | |
b1dc1806 | 8327 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8328 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
8329 | if (cu->language == language_cplus) |
8330 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
8331 | set_addrmap, cu); | |
c906108c | 8332 | break; |
72929c62 | 8333 | case DW_TAG_constant: |
c906108c SS |
8334 | case DW_TAG_variable: |
8335 | case DW_TAG_typedef: | |
91c24f0a | 8336 | case DW_TAG_union_type: |
317d2668 TV |
8337 | if (!pdi->is_declaration |
8338 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8339 | { |
72bf9492 | 8340 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8341 | } |
8342 | break; | |
c906108c | 8343 | case DW_TAG_class_type: |
680b30c7 | 8344 | case DW_TAG_interface_type: |
c906108c | 8345 | case DW_TAG_structure_type: |
72bf9492 | 8346 | if (!pdi->is_declaration) |
c906108c | 8347 | { |
72bf9492 | 8348 | add_partial_symbol (pdi, cu); |
c906108c | 8349 | } |
b7fee5a3 KS |
8350 | if ((cu->language == language_rust |
8351 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8352 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8353 | set_addrmap, cu); | |
c906108c | 8354 | break; |
91c24f0a | 8355 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8356 | if (!pdi->is_declaration) |
8357 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8358 | break; |
8359 | case DW_TAG_base_type: | |
dda83cd7 | 8360 | case DW_TAG_subrange_type: |
c906108c | 8361 | /* File scope base type definitions are added to the partial |
dda83cd7 | 8362 | symbol table. */ |
72bf9492 | 8363 | add_partial_symbol (pdi, cu); |
c906108c | 8364 | break; |
d9fa45fe | 8365 | case DW_TAG_namespace: |
cdc07690 | 8366 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8367 | break; |
5d7cb8df | 8368 | case DW_TAG_module: |
59c35742 AB |
8369 | if (!pdi->is_declaration) |
8370 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8371 | break; |
95554aad TT |
8372 | case DW_TAG_imported_unit: |
8373 | { | |
8374 | struct dwarf2_per_cu_data *per_cu; | |
8375 | ||
f4dc4d17 DE |
8376 | /* For now we don't handle imported units in type units. */ |
8377 | if (cu->per_cu->is_debug_types) | |
8378 | { | |
8379 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8380 | " supported in type units [in module %s]"), | |
5e22e966 | 8381 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8382 | } |
8383 | ||
e3b94546 | 8384 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8385 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8386 | |
8387 | /* Go read the partial unit, if needed. */ | |
8388 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8389 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8390 | cu->language); | |
95554aad | 8391 | |
ae640021 | 8392 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8393 | } |
8394 | break; | |
74921315 KS |
8395 | case DW_TAG_imported_declaration: |
8396 | add_partial_symbol (pdi, cu); | |
8397 | break; | |
c906108c SS |
8398 | default: |
8399 | break; | |
8400 | } | |
8401 | } | |
8402 | ||
72bf9492 DJ |
8403 | /* If the die has a sibling, skip to the sibling. */ |
8404 | ||
8405 | pdi = pdi->die_sibling; | |
8406 | } | |
8407 | } | |
8408 | ||
8409 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8410 | |
72bf9492 | 8411 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8412 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8413 | Enumerators are an exception; they use the scope of their parent |
8414 | enumeration type, i.e. the name of the enumeration type is not | |
8415 | prepended to the enumerator. | |
91c24f0a | 8416 | |
72bf9492 DJ |
8417 | There are two complexities. One is DW_AT_specification; in this |
8418 | case "parent" means the parent of the target of the specification, | |
8419 | instead of the direct parent of the DIE. The other is compilers | |
8420 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8421 | the fully qualified name of structure types from their members' | |
8422 | linkage names. This must be done using the DIE's children rather | |
8423 | than the children of any DW_AT_specification target. We only need | |
8424 | to do this for structures at the top level, i.e. if the target of | |
8425 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8426 | have a parent. */ | |
8427 | ||
8428 | /* Compute the scope prefix associated with PDI's parent, in | |
8429 | compilation unit CU. The result will be allocated on CU's | |
8430 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8431 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8432 | static const char * |
72bf9492 DJ |
8433 | partial_die_parent_scope (struct partial_die_info *pdi, |
8434 | struct dwarf2_cu *cu) | |
8435 | { | |
15d034d0 | 8436 | const char *grandparent_scope; |
72bf9492 | 8437 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8438 | |
72bf9492 DJ |
8439 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8440 | then this means the parent of the specification DIE. */ | |
8441 | ||
8442 | real_pdi = pdi; | |
72bf9492 | 8443 | while (real_pdi->has_specification) |
fb816e8b | 8444 | { |
122cf0f2 AB |
8445 | auto res = find_partial_die (real_pdi->spec_offset, |
8446 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8447 | real_pdi = res.pdi; |
8448 | cu = res.cu; | |
8449 | } | |
72bf9492 DJ |
8450 | |
8451 | parent = real_pdi->die_parent; | |
8452 | if (parent == NULL) | |
8453 | return NULL; | |
8454 | ||
8455 | if (parent->scope_set) | |
8456 | return parent->scope; | |
8457 | ||
52356b79 | 8458 | parent->fixup (cu); |
72bf9492 | 8459 | |
10b3939b | 8460 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8461 | |
acebe513 UW |
8462 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8463 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8464 | Work around this problem here. */ | |
8465 | if (cu->language == language_cplus | |
6e70227d | 8466 | && parent->tag == DW_TAG_namespace |
7d00ffec | 8467 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
8468 | && grandparent_scope == NULL) |
8469 | { | |
8470 | parent->scope = NULL; | |
8471 | parent->scope_set = 1; | |
8472 | return NULL; | |
8473 | } | |
8474 | ||
0a4b0913 | 8475 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8476 | if (pdi->tag == DW_TAG_enumerator) |
8477 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8478 | parent->scope = grandparent_scope; | |
8479 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8480 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8481 | || parent->tag == DW_TAG_structure_type |
8482 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8483 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8484 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8485 | || parent->tag == DW_TAG_enumeration_type |
8486 | || (cu->language == language_fortran | |
8487 | && parent->tag == DW_TAG_subprogram | |
8488 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8489 | { |
8490 | if (grandparent_scope == NULL) | |
7d00ffec | 8491 | parent->scope = parent->name (cu); |
72bf9492 | 8492 | else |
3e43a32a MS |
8493 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8494 | grandparent_scope, | |
7d00ffec | 8495 | parent->name (cu), 0, cu); |
72bf9492 | 8496 | } |
72bf9492 DJ |
8497 | else |
8498 | { | |
8499 | /* FIXME drow/2004-04-01: What should we be doing with | |
8500 | function-local names? For partial symbols, we should probably be | |
8501 | ignoring them. */ | |
fa9c3fa0 TT |
8502 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8503 | dwarf_tag_name (parent->tag), | |
8504 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8505 | parent->scope = grandparent_scope; |
c906108c SS |
8506 | } |
8507 | ||
72bf9492 DJ |
8508 | parent->scope_set = 1; |
8509 | return parent->scope; | |
8510 | } | |
8511 | ||
8512 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8513 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8514 | |
43816ebc | 8515 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8516 | partial_die_full_name (struct partial_die_info *pdi, |
8517 | struct dwarf2_cu *cu) | |
8518 | { | |
15d034d0 | 8519 | const char *parent_scope; |
72bf9492 | 8520 | |
98bfdba5 PA |
8521 | /* If this is a template instantiation, we can not work out the |
8522 | template arguments from partial DIEs. So, unfortunately, we have | |
8523 | to go through the full DIEs. At least any work we do building | |
8524 | types here will be reused if full symbols are loaded later. */ | |
8525 | if (pdi->has_template_arguments) | |
8526 | { | |
52356b79 | 8527 | pdi->fixup (cu); |
98bfdba5 | 8528 | |
7d00ffec | 8529 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8530 | { |
8531 | struct die_info *die; | |
8532 | struct attribute attr; | |
8533 | struct dwarf2_cu *ref_cu = cu; | |
8534 | ||
b64f50a1 | 8535 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8536 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8537 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8538 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8539 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8540 | ||
43816ebc | 8541 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8542 | } |
8543 | } | |
8544 | ||
72bf9492 DJ |
8545 | parent_scope = partial_die_parent_scope (pdi, cu); |
8546 | if (parent_scope == NULL) | |
8547 | return NULL; | |
8548 | else | |
43816ebc | 8549 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8550 | pdi->name (cu), |
8551 | 0, cu)); | |
c906108c SS |
8552 | } |
8553 | ||
8554 | static void | |
72bf9492 | 8555 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8556 | { |
976ca316 SM |
8557 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8558 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8559 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8560 | CORE_ADDR addr = 0; |
15d034d0 | 8561 | const char *actual_name = NULL; |
e142c38c DJ |
8562 | CORE_ADDR baseaddr; |
8563 | ||
b3b3bada | 8564 | baseaddr = objfile->text_section_offset (); |
c906108c | 8565 | |
43816ebc TT |
8566 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8567 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8568 | if (built_actual_name != NULL) |
43816ebc | 8569 | actual_name = built_actual_name.get (); |
63d06c5c | 8570 | |
72bf9492 | 8571 | if (actual_name == NULL) |
7d00ffec | 8572 | actual_name = pdi->name (cu); |
72bf9492 | 8573 | |
76e288d1 TT |
8574 | partial_symbol psymbol; |
8575 | memset (&psymbol, 0, sizeof (psymbol)); | |
8576 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
8577 | psymbol.ginfo.section = -1; | |
8578 | ||
8579 | /* The code below indicates that the psymbol should be installed by | |
8580 | setting this. */ | |
8581 | gdb::optional<psymbol_placement> where; | |
8582 | ||
c906108c SS |
8583 | switch (pdi->tag) |
8584 | { | |
b1dc1806 | 8585 | case DW_TAG_inlined_subroutine: |
c906108c | 8586 | case DW_TAG_subprogram: |
79748972 TT |
8587 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8588 | - baseaddr); | |
0a4b0913 AB |
8589 | if (pdi->is_external |
8590 | || cu->language == language_ada | |
8591 | || (cu->language == language_fortran | |
8592 | && pdi->die_parent != NULL | |
8593 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8594 | { | |
dda83cd7 SM |
8595 | /* Normally, only "external" DIEs are part of the global scope. |
8596 | But in Ada and Fortran, we want to be able to access nested | |
8597 | procedures globally. So all Ada and Fortran subprograms are | |
8598 | stored in the global scope. */ | |
76e288d1 | 8599 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8600 | } |
8601 | else | |
76e288d1 TT |
8602 | where = psymbol_placement::STATIC; |
8603 | ||
8604 | psymbol.domain = VAR_DOMAIN; | |
8605 | psymbol.aclass = LOC_BLOCK; | |
8606 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8607 | psymbol.ginfo.value.address = addr; | |
0c1b455e TT |
8608 | |
8609 | if (pdi->main_subprogram && actual_name != NULL) | |
8610 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8611 | break; |
72929c62 | 8612 | case DW_TAG_constant: |
76e288d1 TT |
8613 | psymbol.domain = VAR_DOMAIN; |
8614 | psymbol.aclass = LOC_STATIC; | |
8615 | where = (pdi->is_external | |
8616 | ? psymbol_placement::GLOBAL | |
8617 | : psymbol_placement::STATIC); | |
72929c62 | 8618 | break; |
c906108c | 8619 | case DW_TAG_variable: |
95554aad TT |
8620 | if (pdi->d.locdesc) |
8621 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8622 | |
95554aad | 8623 | if (pdi->d.locdesc |
caac4577 | 8624 | && addr == 0 |
976ca316 | 8625 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8626 | { |
8627 | /* A global or static variable may also have been stripped | |
8628 | out by the linker if unused, in which case its address | |
8629 | will be nullified; do not add such variables into partial | |
8630 | symbol table then. */ | |
8631 | } | |
8632 | else if (pdi->is_external) | |
c906108c SS |
8633 | { |
8634 | /* Global Variable. | |
8635 | Don't enter into the minimal symbol tables as there is | |
8636 | a minimal symbol table entry from the ELF symbols already. | |
8637 | Enter into partial symbol table if it has a location | |
8638 | descriptor or a type. | |
8639 | If the location descriptor is missing, new_symbol will create | |
8640 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8641 | be determined from the minimal symbol table whenever the variable | |
8642 | is referenced. | |
8643 | The address for the partial symbol table entry is not | |
8644 | used by GDB, but it comes in handy for debugging partial symbol | |
8645 | table building. */ | |
8646 | ||
95554aad | 8647 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8648 | { |
8649 | psymbol.domain = VAR_DOMAIN; | |
8650 | psymbol.aclass = LOC_STATIC; | |
8651 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8652 | psymbol.ginfo.value.address = addr; | |
8653 | where = psymbol_placement::GLOBAL; | |
8654 | } | |
c906108c SS |
8655 | } |
8656 | else | |
8657 | { | |
ff908ebf AW |
8658 | int has_loc = pdi->d.locdesc != NULL; |
8659 | ||
8660 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8661 | without location descriptors or constant values). */ | |
8662 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8663 | return; |
ff908ebf | 8664 | |
76e288d1 TT |
8665 | psymbol.domain = VAR_DOMAIN; |
8666 | psymbol.aclass = LOC_STATIC; | |
8667 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8668 | if (has_loc) | |
8669 | psymbol.ginfo.value.address = addr; | |
8670 | where = psymbol_placement::STATIC; | |
c906108c SS |
8671 | } |
8672 | break; | |
d8f62e84 | 8673 | case DW_TAG_array_type: |
c906108c SS |
8674 | case DW_TAG_typedef: |
8675 | case DW_TAG_base_type: | |
a02abb62 | 8676 | case DW_TAG_subrange_type: |
76e288d1 TT |
8677 | psymbol.domain = VAR_DOMAIN; |
8678 | psymbol.aclass = LOC_TYPEDEF; | |
8679 | where = psymbol_placement::STATIC; | |
c906108c | 8680 | break; |
74921315 | 8681 | case DW_TAG_imported_declaration: |
72bf9492 | 8682 | case DW_TAG_namespace: |
76e288d1 TT |
8683 | psymbol.domain = VAR_DOMAIN; |
8684 | psymbol.aclass = LOC_TYPEDEF; | |
8685 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8686 | break; |
530e8392 | 8687 | case DW_TAG_module: |
a5fd13a9 | 8688 | /* With Fortran 77 there might be a "BLOCK DATA" module |
dda83cd7 SM |
8689 | available without any name. If so, we skip the module as it |
8690 | doesn't bring any value. */ | |
a5fd13a9 | 8691 | if (actual_name != nullptr) |
76e288d1 TT |
8692 | { |
8693 | psymbol.domain = MODULE_DOMAIN; | |
8694 | psymbol.aclass = LOC_TYPEDEF; | |
8695 | where = psymbol_placement::GLOBAL; | |
8696 | } | |
530e8392 | 8697 | break; |
c906108c | 8698 | case DW_TAG_class_type: |
680b30c7 | 8699 | case DW_TAG_interface_type: |
c906108c SS |
8700 | case DW_TAG_structure_type: |
8701 | case DW_TAG_union_type: | |
8702 | case DW_TAG_enumeration_type: | |
fa4028e9 | 8703 | /* Skip external references. The DWARF standard says in the section |
dda83cd7 SM |
8704 | about "Structure, Union, and Class Type Entries": "An incomplete |
8705 | structure, union or class type is represented by a structure, | |
8706 | union or class entry that does not have a byte size attribute | |
8707 | and that has a DW_AT_declaration attribute." */ | |
fa4028e9 | 8708 | if (!pdi->has_byte_size && pdi->is_declaration) |
43816ebc | 8709 | return; |
fa4028e9 | 8710 | |
63d06c5c DC |
8711 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8712 | static vs. global. */ | |
76e288d1 TT |
8713 | psymbol.domain = STRUCT_DOMAIN; |
8714 | psymbol.aclass = LOC_TYPEDEF; | |
8715 | where = (cu->language == language_cplus | |
8716 | ? psymbol_placement::GLOBAL | |
8717 | : psymbol_placement::STATIC); | |
c906108c SS |
8718 | break; |
8719 | case DW_TAG_enumerator: | |
76e288d1 TT |
8720 | psymbol.domain = VAR_DOMAIN; |
8721 | psymbol.aclass = LOC_CONST; | |
8722 | where = (cu->language == language_cplus | |
8723 | ? psymbol_placement::GLOBAL | |
8724 | : psymbol_placement::STATIC); | |
c906108c SS |
8725 | break; |
8726 | default: | |
8727 | break; | |
8728 | } | |
76e288d1 TT |
8729 | |
8730 | if (where.has_value ()) | |
8731 | { | |
f049a313 TT |
8732 | if (built_actual_name != nullptr) |
8733 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8734 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8735 | psymbol.ginfo.set_linkage_name (actual_name); | |
8736 | else | |
8737 | { | |
8738 | psymbol.ginfo.set_demangled_name (actual_name, | |
8739 | &objfile->objfile_obstack); | |
8740 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8741 | } | |
932539d7 | 8742 | cu->per_cu->v.psymtab->add_psymbol (psymbol, *where, objfile); |
76e288d1 | 8743 | } |
c906108c SS |
8744 | } |
8745 | ||
5c4e30ca DC |
8746 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8747 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8748 | the name of the enclosing namespace. */ | |
91c24f0a | 8749 | |
72bf9492 DJ |
8750 | static void |
8751 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8752 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8753 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8754 | { |
72bf9492 | 8755 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8756 | |
72bf9492 | 8757 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8758 | |
8759 | /* Now scan partial symbols in that namespace. */ | |
8760 | ||
91c24f0a | 8761 | if (pdi->has_children) |
cdc07690 | 8762 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8763 | } |
8764 | ||
5d7cb8df JK |
8765 | /* Read a partial die corresponding to a Fortran module. */ |
8766 | ||
8767 | static void | |
8768 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8769 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8770 | { |
530e8392 KB |
8771 | /* Add a symbol for the namespace. */ |
8772 | ||
8773 | add_partial_symbol (pdi, cu); | |
8774 | ||
f55ee35c | 8775 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8776 | |
8777 | if (pdi->has_children) | |
cdc07690 | 8778 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8779 | } |
8780 | ||
b1dc1806 XR |
8781 | /* Read a partial die corresponding to a subprogram or an inlined |
8782 | subprogram and create a partial symbol for that subprogram. | |
8783 | When the CU language allows it, this routine also defines a partial | |
8784 | symbol for each nested subprogram that this subprogram contains. | |
8785 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8786 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8787 | |
cdc07690 YQ |
8788 | PDI may also be a lexical block, in which case we simply search |
8789 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8790 | Again, this is only performed when the CU language allows this |
8791 | type of definitions. */ | |
8792 | ||
8793 | static void | |
8794 | add_partial_subprogram (struct partial_die_info *pdi, | |
8795 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8796 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8797 | { |
b1dc1806 | 8798 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8799 | { |
8800 | if (pdi->has_pc_info) | |
dda83cd7 SM |
8801 | { |
8802 | if (pdi->lowpc < *lowpc) | |
8803 | *lowpc = pdi->lowpc; | |
8804 | if (pdi->highpc > *highpc) | |
8805 | *highpc = pdi->highpc; | |
cdc07690 | 8806 | if (set_addrmap) |
5734ee8b | 8807 | { |
5e22e966 | 8808 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8809 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8810 | CORE_ADDR baseaddr; |
b926417a TT |
8811 | CORE_ADDR this_highpc; |
8812 | CORE_ADDR this_lowpc; | |
5734ee8b | 8813 | |
b3b3bada | 8814 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8815 | this_lowpc |
8816 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8817 | pdi->lowpc + baseaddr) | |
8818 | - baseaddr); | |
8819 | this_highpc | |
8820 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8821 | pdi->highpc + baseaddr) | |
8822 | - baseaddr); | |
d320c2b5 | 8823 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8824 | this_lowpc, this_highpc - 1, |
9291a0cd | 8825 | cu->per_cu->v.psymtab); |
5734ee8b | 8826 | } |
dda83cd7 | 8827 | } |
481860b3 GB |
8828 | |
8829 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8830 | { | |
dda83cd7 | 8831 | if (!pdi->is_declaration) |
e8d05480 JB |
8832 | /* Ignore subprogram DIEs that do not have a name, they are |
8833 | illegal. Do not emit a complaint at this point, we will | |
8834 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8835 | if (pdi->name (cu)) |
e8d05480 | 8836 | add_partial_symbol (pdi, cu); |
dda83cd7 | 8837 | } |
bc30ff58 | 8838 | } |
6e70227d | 8839 | |
bc30ff58 JB |
8840 | if (! pdi->has_children) |
8841 | return; | |
8842 | ||
0a4b0913 | 8843 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8844 | { |
8845 | pdi = pdi->die_child; | |
8846 | while (pdi != NULL) | |
8847 | { | |
52356b79 | 8848 | pdi->fixup (cu); |
bc30ff58 | 8849 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8850 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8851 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8852 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8853 | pdi = pdi->die_sibling; |
8854 | } | |
8855 | } | |
8856 | } | |
8857 | ||
91c24f0a DC |
8858 | /* Read a partial die corresponding to an enumeration type. */ |
8859 | ||
72bf9492 DJ |
8860 | static void |
8861 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8862 | struct dwarf2_cu *cu) | |
91c24f0a | 8863 | { |
72bf9492 | 8864 | struct partial_die_info *pdi; |
91c24f0a | 8865 | |
7d00ffec | 8866 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8867 | add_partial_symbol (enum_pdi, cu); |
8868 | ||
8869 | pdi = enum_pdi->die_child; | |
8870 | while (pdi) | |
91c24f0a | 8871 | { |
7d00ffec | 8872 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8873 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8874 | else |
72bf9492 DJ |
8875 | add_partial_symbol (pdi, cu); |
8876 | pdi = pdi->die_sibling; | |
91c24f0a | 8877 | } |
91c24f0a DC |
8878 | } |
8879 | ||
6caca83c CC |
8880 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8881 | ||
8882 | static unsigned int | |
d521ce57 | 8883 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8884 | { |
8885 | unsigned int bytes_read; | |
8886 | ||
8887 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8888 | } | |
8889 | ||
685af9cd TT |
8890 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8891 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8892 | ||
4bb7a0a7 DJ |
8893 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8894 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8895 | the initial number. */ | |
8896 | ||
8897 | static struct abbrev_info * | |
685af9cd TT |
8898 | peek_die_abbrev (const die_reader_specs &reader, |
8899 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8900 | { |
685af9cd | 8901 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8902 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8903 | unsigned int abbrev_number |
8904 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8905 | |
8906 | if (abbrev_number == 0) | |
8907 | return NULL; | |
8908 | ||
685af9cd | 8909 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8910 | if (!abbrev) |
8911 | { | |
422b9917 | 8912 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8913 | " at offset %s [in module %s]"), |
422b9917 | 8914 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8915 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8916 | } |
8917 | ||
8918 | return abbrev; | |
8919 | } | |
8920 | ||
93311388 DE |
8921 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8922 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8923 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8924 | ||
d521ce57 TT |
8925 | static const gdb_byte * |
8926 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8927 | { |
4bb7a0a7 DJ |
8928 | while (1) |
8929 | { | |
685af9cd TT |
8930 | unsigned int bytes_read; |
8931 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8932 | ||
4bb7a0a7 DJ |
8933 | if (abbrev == NULL) |
8934 | return info_ptr + bytes_read; | |
8935 | else | |
dee91e82 | 8936 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8937 | } |
8938 | } | |
8939 | ||
93311388 DE |
8940 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8941 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8942 | abbrev corresponding to that skipped uleb128 should be passed in |
8943 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8944 | children. */ | |
8945 | ||
d521ce57 TT |
8946 | static const gdb_byte * |
8947 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8948 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8949 | { |
8950 | unsigned int bytes_read; | |
8951 | struct attribute attr; | |
dee91e82 DE |
8952 | bfd *abfd = reader->abfd; |
8953 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8954 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8955 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8956 | unsigned int form, i; |
8957 | ||
8958 | for (i = 0; i < abbrev->num_attrs; i++) | |
8959 | { | |
8960 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8961 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8962 | { | |
7a5f294d | 8963 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 8964 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8965 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8966 | else |
b9502d3f | 8967 | { |
0826b30a | 8968 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8969 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8970 | |
8971 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8972 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8973 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8974 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8975 | else |
8976 | return sibling_ptr; | |
8977 | } | |
4bb7a0a7 DJ |
8978 | } |
8979 | ||
8980 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8981 | form = abbrev->attrs[i].form; | |
8982 | skip_attribute: | |
8983 | switch (form) | |
8984 | { | |
4bb7a0a7 | 8985 | case DW_FORM_ref_addr: |
ae411497 TT |
8986 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8987 | and later it is offset sized. */ | |
8988 | if (cu->header.version == 2) | |
8989 | info_ptr += cu->header.addr_size; | |
8990 | else | |
8991 | info_ptr += cu->header.offset_size; | |
8992 | break; | |
36586728 TT |
8993 | case DW_FORM_GNU_ref_alt: |
8994 | info_ptr += cu->header.offset_size; | |
8995 | break; | |
ae411497 | 8996 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8997 | info_ptr += cu->header.addr_size; |
8998 | break; | |
8999 | case DW_FORM_data1: | |
9000 | case DW_FORM_ref1: | |
9001 | case DW_FORM_flag: | |
8fe0f950 | 9002 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
9003 | info_ptr += 1; |
9004 | break; | |
2dc7f7b3 | 9005 | case DW_FORM_flag_present: |
43988095 | 9006 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9007 | break; |
4bb7a0a7 DJ |
9008 | case DW_FORM_data2: |
9009 | case DW_FORM_ref2: | |
8fe0f950 | 9010 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
9011 | info_ptr += 2; |
9012 | break; | |
8fe0f950 AT |
9013 | case DW_FORM_strx3: |
9014 | info_ptr += 3; | |
9015 | break; | |
4bb7a0a7 DJ |
9016 | case DW_FORM_data4: |
9017 | case DW_FORM_ref4: | |
8fe0f950 | 9018 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
9019 | info_ptr += 4; |
9020 | break; | |
9021 | case DW_FORM_data8: | |
9022 | case DW_FORM_ref8: | |
55f1336d | 9023 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9024 | info_ptr += 8; |
9025 | break; | |
0224619f JK |
9026 | case DW_FORM_data16: |
9027 | info_ptr += 16; | |
9028 | break; | |
4bb7a0a7 | 9029 | case DW_FORM_string: |
9b1c24c8 | 9030 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9031 | info_ptr += bytes_read; |
9032 | break; | |
2dc7f7b3 | 9033 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9034 | case DW_FORM_strp: |
36586728 | 9035 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9036 | info_ptr += cu->header.offset_size; |
9037 | break; | |
2dc7f7b3 | 9038 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9039 | case DW_FORM_block: |
9040 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9041 | info_ptr += bytes_read; | |
9042 | break; | |
9043 | case DW_FORM_block1: | |
9044 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9045 | break; | |
9046 | case DW_FORM_block2: | |
9047 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9048 | break; | |
9049 | case DW_FORM_block4: | |
9050 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9051 | break; | |
336d760d | 9052 | case DW_FORM_addrx: |
cf532bd1 | 9053 | case DW_FORM_strx: |
4bb7a0a7 DJ |
9054 | case DW_FORM_sdata: |
9055 | case DW_FORM_udata: | |
9056 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9057 | case DW_FORM_GNU_addr_index: |
9058 | case DW_FORM_GNU_str_index: | |
18a8505e | 9059 | case DW_FORM_rnglistx: |
41144253 | 9060 | case DW_FORM_loclistx: |
d521ce57 | 9061 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9062 | break; |
9063 | case DW_FORM_indirect: | |
9064 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9065 | info_ptr += bytes_read; | |
9066 | /* We need to continue parsing from here, so just go back to | |
9067 | the top. */ | |
9068 | goto skip_attribute; | |
9069 | ||
9070 | default: | |
3e43a32a MS |
9071 | error (_("Dwarf Error: Cannot handle %s " |
9072 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9073 | dwarf_form_name (form), |
9074 | bfd_get_filename (abfd)); | |
9075 | } | |
9076 | } | |
9077 | ||
9078 | if (abbrev->has_children) | |
dee91e82 | 9079 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9080 | else |
9081 | return info_ptr; | |
9082 | } | |
9083 | ||
93311388 | 9084 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9085 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9086 | |
d521ce57 | 9087 | static const gdb_byte * |
dee91e82 DE |
9088 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9089 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9090 | const gdb_byte *info_ptr) |
91c24f0a DC |
9091 | { |
9092 | /* Do we know the sibling already? */ | |
72bf9492 | 9093 | |
91c24f0a DC |
9094 | if (orig_pdi->sibling) |
9095 | return orig_pdi->sibling; | |
9096 | ||
9097 | /* Are there any children to deal with? */ | |
9098 | ||
9099 | if (!orig_pdi->has_children) | |
9100 | return info_ptr; | |
9101 | ||
4bb7a0a7 | 9102 | /* Skip the children the long way. */ |
91c24f0a | 9103 | |
dee91e82 | 9104 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9105 | } |
9106 | ||
257e7a09 | 9107 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9108 | not NULL. */ |
c906108c | 9109 | |
891813be TT |
9110 | void |
9111 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9112 | { |
976ca316 | 9113 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 9114 | |
976ca316 | 9115 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 9116 | |
077cbab2 TT |
9117 | /* If this psymtab is constructed from a debug-only objfile, the |
9118 | has_section_at_zero flag will not necessarily be correct. We | |
9119 | can get the correct value for this flag by looking at the data | |
9120 | associated with the (presumably stripped) associated objfile. */ | |
9121 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9122 | { |
976ca316 | 9123 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 9124 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 9125 | |
976ca316 SM |
9126 | per_objfile->per_bfd->has_section_at_zero |
9127 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 9128 | } |
98bfdba5 | 9129 | |
8566b89b | 9130 | expand_psymtab (objfile); |
95554aad | 9131 | |
976ca316 | 9132 | process_cu_includes (per_objfile); |
c906108c | 9133 | } |
9cdd5dbd DE |
9134 | \f |
9135 | /* Reading in full CUs. */ | |
c906108c | 9136 | |
10b3939b DJ |
9137 | /* Add PER_CU to the queue. */ |
9138 | ||
9139 | static void | |
120ce1b5 SM |
9140 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
9141 | dwarf2_per_objfile *per_objfile, | |
95554aad | 9142 | enum language pretend_language) |
10b3939b | 9143 | { |
10b3939b | 9144 | per_cu->queued = 1; |
120ce1b5 | 9145 | per_cu->per_bfd->queue.emplace (per_cu, per_objfile, pretend_language); |
10b3939b DJ |
9146 | } |
9147 | ||
89e63ee4 DE |
9148 | /* If PER_CU is not yet queued, add it to the queue. |
9149 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9150 | dependency. | |
0907af0c | 9151 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9152 | meaning either PER_CU is already queued or it is already loaded. |
9153 | ||
9154 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9155 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9156 | |
9157 | static int | |
89e63ee4 | 9158 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
9159 | dwarf2_per_cu_data *per_cu, |
9160 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
9161 | enum language pretend_language) |
9162 | { | |
9163 | /* We may arrive here during partial symbol reading, if we need full | |
9164 | DIEs to process an unusual case (e.g. template arguments). Do | |
9165 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 9166 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 9167 | { |
7188ed02 SM |
9168 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9169 | ||
9170 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
9171 | return 1; |
9172 | return 0; | |
9173 | } | |
9174 | ||
9175 | /* Mark the dependence relation so that we don't flush PER_CU | |
9176 | too early. */ | |
89e63ee4 DE |
9177 | if (dependent_cu != NULL) |
9178 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9179 | |
9180 | /* If it's already on the queue, we have nothing to do. */ | |
9181 | if (per_cu->queued) | |
de53369b SM |
9182 | { |
9183 | /* Verify the invariant that if a CU is queued for expansion, its DIEs are | |
9184 | loaded. */ | |
9185 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); | |
9186 | return 0; | |
9187 | } | |
0907af0c DE |
9188 | |
9189 | /* If the compilation unit is already loaded, just mark it as | |
9190 | used. */ | |
7188ed02 SM |
9191 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9192 | if (cu != nullptr) | |
0907af0c | 9193 | { |
7188ed02 | 9194 | cu->last_used = 0; |
0907af0c DE |
9195 | return 0; |
9196 | } | |
9197 | ||
9198 | /* Add it to the queue. */ | |
120ce1b5 | 9199 | queue_comp_unit (per_cu, per_objfile, pretend_language); |
0907af0c DE |
9200 | |
9201 | return 1; | |
9202 | } | |
9203 | ||
10b3939b DJ |
9204 | /* Process the queue. */ |
9205 | ||
9206 | static void | |
976ca316 | 9207 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 9208 | { |
6f738b01 SM |
9209 | dwarf_read_debug_printf ("Expanding one or more symtabs of objfile %s ...", |
9210 | objfile_name (per_objfile->objfile)); | |
45cfd468 | 9211 | |
03dd20cc DJ |
9212 | /* The queue starts out with one item, but following a DIE reference |
9213 | may load a new CU, adding it to the end of the queue. */ | |
976ca316 | 9214 | while (!per_objfile->per_bfd->queue.empty ()) |
10b3939b | 9215 | { |
976ca316 | 9216 | dwarf2_queue_item &item = per_objfile->per_bfd->queue.front (); |
7188ed02 | 9217 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 9218 | |
976ca316 | 9219 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 9220 | { |
976ca316 | 9221 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 9222 | |
7188ed02 SM |
9223 | /* Skip dummy CUs. */ |
9224 | if (cu != nullptr) | |
73be47f5 | 9225 | { |
7188ed02 SM |
9226 | unsigned int debug_print_threshold; |
9227 | char buf[100]; | |
9228 | ||
9229 | if (per_cu->is_debug_types) | |
9230 | { | |
9231 | struct signatured_type *sig_type = | |
9232 | (struct signatured_type *) per_cu; | |
9233 | ||
9234 | sprintf (buf, "TU %s at offset %s", | |
9235 | hex_string (sig_type->signature), | |
9236 | sect_offset_str (per_cu->sect_off)); | |
9237 | /* There can be 100s of TUs. | |
9238 | Only print them in verbose mode. */ | |
9239 | debug_print_threshold = 2; | |
9240 | } | |
9241 | else | |
9242 | { | |
9243 | sprintf (buf, "CU at offset %s", | |
9244 | sect_offset_str (per_cu->sect_off)); | |
9245 | debug_print_threshold = 1; | |
9246 | } | |
247f5c4f | 9247 | |
7188ed02 | 9248 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9249 | dwarf_read_debug_printf ("Expanding symtab of %s", buf); |
f4dc4d17 | 9250 | |
7188ed02 SM |
9251 | if (per_cu->is_debug_types) |
9252 | process_full_type_unit (cu, item.pretend_language); | |
9253 | else | |
9254 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9255 | |
7188ed02 | 9256 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9257 | dwarf_read_debug_printf ("Done expanding %s", buf); |
7188ed02 | 9258 | } |
f4dc4d17 | 9259 | } |
10b3939b | 9260 | |
7188ed02 | 9261 | per_cu->queued = 0; |
976ca316 | 9262 | per_objfile->per_bfd->queue.pop (); |
10b3939b DJ |
9263 | } |
9264 | ||
6f738b01 SM |
9265 | dwarf_read_debug_printf ("Done expanding symtabs of %s.", |
9266 | objfile_name (per_objfile->objfile)); | |
10b3939b DJ |
9267 | } |
9268 | ||
10b3939b DJ |
9269 | /* Read in full symbols for PST, and anything it depends on. */ |
9270 | ||
8566b89b TT |
9271 | void |
9272 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9273 | { |
af758d11 | 9274 | gdb_assert (!readin_p (objfile)); |
95554aad | 9275 | |
17ee85fc TT |
9276 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9277 | free_cached_comp_units freer (per_objfile); | |
48993951 | 9278 | expand_dependencies (objfile); |
aaa75496 | 9279 | |
97a1449a | 9280 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 9281 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9282 | } |
9283 | ||
af758d11 SM |
9284 | /* See psympriv.h. */ |
9285 | ||
9286 | bool | |
9287 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9288 | { | |
9289 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9290 | return per_objfile->symtab_set_p (per_cu_data); | |
9291 | } | |
9292 | ||
9293 | /* See psympriv.h. */ | |
9294 | ||
9295 | compunit_symtab * | |
9296 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9297 | { | |
9298 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9299 | return per_objfile->get_symtab (per_cu_data); | |
9300 | } | |
9301 | ||
dee91e82 DE |
9302 | /* Trivial hash function for die_info: the hash value of a DIE |
9303 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9304 | |
dee91e82 DE |
9305 | static hashval_t |
9306 | die_hash (const void *item) | |
10b3939b | 9307 | { |
9a3c8263 | 9308 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9309 | |
9c541725 | 9310 | return to_underlying (die->sect_off); |
dee91e82 | 9311 | } |
63d06c5c | 9312 | |
dee91e82 DE |
9313 | /* Trivial comparison function for die_info structures: two DIEs |
9314 | are equal if they have the same offset. */ | |
98bfdba5 | 9315 | |
dee91e82 DE |
9316 | static int |
9317 | die_eq (const void *item_lhs, const void *item_rhs) | |
9318 | { | |
9a3c8263 SM |
9319 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9320 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9321 | |
9c541725 | 9322 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9323 | } |
c906108c | 9324 | |
4a636814 SM |
9325 | /* Load the DIEs associated with PER_CU into memory. |
9326 | ||
9327 | In some cases, the caller, while reading partial symbols, will need to load | |
9328 | the full symbols for the CU for some reason. It will already have a | |
9329 | dwarf2_cu object for THIS_CU and pass it as EXISTING_CU, so it can be re-used | |
9330 | rather than creating a new one. */ | |
c906108c | 9331 | |
dee91e82 | 9332 | static void |
ab432490 SM |
9333 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9334 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 9335 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
9336 | bool skip_partial, |
9337 | enum language pretend_language) | |
dee91e82 | 9338 | { |
c0ab21c2 TT |
9339 | gdb_assert (! this_cu->is_debug_types); |
9340 | ||
7188ed02 | 9341 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); |
c0ab21c2 TT |
9342 | if (reader.dummy_p) |
9343 | return; | |
9344 | ||
9345 | struct dwarf2_cu *cu = reader.cu; | |
9346 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9347 | |
dee91e82 DE |
9348 | gdb_assert (cu->die_hash == NULL); |
9349 | cu->die_hash = | |
9350 | htab_create_alloc_ex (cu->header.length / 12, | |
9351 | die_hash, | |
9352 | die_eq, | |
9353 | NULL, | |
9354 | &cu->comp_unit_obstack, | |
9355 | hashtab_obstack_allocate, | |
9356 | dummy_obstack_deallocate); | |
e142c38c | 9357 | |
3e225074 | 9358 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9359 | reader.comp_unit_die->child |
9360 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9361 | &info_ptr, reader.comp_unit_die); | |
9362 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9363 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9364 | |
9365 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9366 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9367 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9368 | or we won't be able to build types correctly. |
9369 | Similarly, if we do not read the producer, we can not apply | |
9370 | producer-specific interpretation. */ | |
c0ab21c2 | 9371 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9372 | |
9373 | reader.keep (); | |
10b3939b DJ |
9374 | } |
9375 | ||
3da10d80 KS |
9376 | /* Add a DIE to the delayed physname list. */ |
9377 | ||
9378 | static void | |
9379 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9380 | const char *name, struct die_info *die, | |
9381 | struct dwarf2_cu *cu) | |
9382 | { | |
9383 | struct delayed_method_info mi; | |
9384 | mi.type = type; | |
9385 | mi.fnfield_index = fnfield_index; | |
9386 | mi.index = index; | |
9387 | mi.name = name; | |
9388 | mi.die = die; | |
c89b44cd | 9389 | cu->method_list.push_back (mi); |
3da10d80 KS |
9390 | } |
9391 | ||
3693fdb3 PA |
9392 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9393 | "const" / "volatile". If so, decrements LEN by the length of the | |
9394 | modifier and return true. Otherwise return false. */ | |
9395 | ||
9396 | template<size_t N> | |
9397 | static bool | |
9398 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9399 | { | |
9400 | size_t mod_len = sizeof (mod) - 1; | |
9401 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9402 | { | |
9403 | len -= mod_len; | |
9404 | return true; | |
9405 | } | |
9406 | return false; | |
9407 | } | |
9408 | ||
3da10d80 KS |
9409 | /* Compute the physnames of any methods on the CU's method list. |
9410 | ||
9411 | The computation of method physnames is delayed in order to avoid the | |
9412 | (bad) condition that one of the method's formal parameters is of an as yet | |
9413 | incomplete type. */ | |
9414 | ||
9415 | static void | |
9416 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9417 | { | |
3693fdb3 | 9418 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9419 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9420 | return; |
9421 | gdb_assert (cu->language == language_cplus); | |
9422 | ||
52941706 | 9423 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9424 | { |
1d06ead6 | 9425 | const char *physname; |
3da10d80 | 9426 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9427 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9428 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9429 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9430 | = physname ? physname : ""; |
3693fdb3 PA |
9431 | |
9432 | /* Since there's no tag to indicate whether a method is a | |
9433 | const/volatile overload, extract that information out of the | |
9434 | demangled name. */ | |
9435 | if (physname != NULL) | |
9436 | { | |
9437 | size_t len = strlen (physname); | |
9438 | ||
9439 | while (1) | |
9440 | { | |
9441 | if (physname[len] == ')') /* shortcut */ | |
9442 | break; | |
9443 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9444 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9445 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9446 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9447 | else |
9448 | break; | |
9449 | } | |
9450 | } | |
3da10d80 | 9451 | } |
c89b44cd TT |
9452 | |
9453 | /* The list is no longer needed. */ | |
9454 | cu->method_list.clear (); | |
3da10d80 KS |
9455 | } |
9456 | ||
a766d390 DE |
9457 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9458 | and it's not clear if/how imported objects will appear. | |
9459 | To keep Go support simple until that's worked out, | |
9460 | go back through what we've read and create something usable. | |
9461 | We could do this while processing each DIE, and feels kinda cleaner, | |
9462 | but that way is more invasive. | |
9463 | This is to, for example, allow the user to type "p var" or "b main" | |
9464 | without having to specify the package name, and allow lookups | |
9465 | of module.object to work in contexts that use the expression | |
9466 | parser. */ | |
9467 | ||
9468 | static void | |
9469 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9470 | { | |
421d1616 | 9471 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9472 | struct pending *list; |
9473 | int i; | |
9474 | ||
c24bdb02 | 9475 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9476 | list != NULL; |
9477 | list = list->next) | |
a766d390 DE |
9478 | { |
9479 | for (i = 0; i < list->nsyms; ++i) | |
9480 | { | |
9481 | struct symbol *sym = list->symbol[i]; | |
9482 | ||
c1b5c1eb | 9483 | if (sym->language () == language_go |
a766d390 DE |
9484 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9485 | { | |
421d1616 TT |
9486 | gdb::unique_xmalloc_ptr<char> this_package_name |
9487 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9488 | |
9489 | if (this_package_name == NULL) | |
9490 | continue; | |
9491 | if (package_name == NULL) | |
421d1616 | 9492 | package_name = std::move (this_package_name); |
a766d390 DE |
9493 | else |
9494 | { | |
5e22e966 | 9495 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9496 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9497 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9498 | (symbol_symtab (sym) != NULL |
9499 | ? symtab_to_filename_for_display | |
9500 | (symbol_symtab (sym)) | |
e3b94546 | 9501 | : objfile_name (objfile)), |
421d1616 | 9502 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9503 | } |
9504 | } | |
9505 | } | |
9506 | } | |
9507 | ||
9508 | if (package_name != NULL) | |
9509 | { | |
5e22e966 | 9510 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9511 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9512 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9513 | saved_package_name); | |
a766d390 DE |
9514 | struct symbol *sym; |
9515 | ||
8c14c3a3 | 9516 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9517 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9518 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9519 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9520 | e.g., "main" finds the "main" module and not C's main(). */ | |
9521 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9522 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9523 | SYMBOL_TYPE (sym) = type; |
9524 | ||
c24bdb02 | 9525 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9526 | } |
9527 | } | |
9528 | ||
c9317f21 TT |
9529 | /* Allocate a fully-qualified name consisting of the two parts on the |
9530 | obstack. */ | |
9531 | ||
9532 | static const char * | |
9533 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9534 | { | |
9535 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9536 | } | |
9537 | ||
9c6a1327 TT |
9538 | /* A helper that allocates a variant part to attach to a Rust enum |
9539 | type. OBSTACK is where the results should be allocated. TYPE is | |
9540 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
57d02173 TT |
9541 | discriminant. It must be the index of one of the fields of TYPE, |
9542 | or -1 to mean there is no discriminant (univariant enum). | |
9c6a1327 TT |
9543 | DEFAULT_INDEX is the index of the default field; or -1 if there is |
9544 | no default. RANGES is indexed by "effective" field number (the | |
9545 | field index, but omitting the discriminant and default fields) and | |
9546 | must hold the discriminant values used by the variants. Note that | |
9547 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9548 | already allocated on it, or static. */ | |
c9317f21 | 9549 | |
9c6a1327 TT |
9550 | static void |
9551 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9552 | int discriminant_index, int default_index, | |
9553 | gdb::array_view<discriminant_range> ranges) | |
9554 | { | |
57d02173 TT |
9555 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. */ |
9556 | gdb_assert (discriminant_index == -1 | |
9557 | || (discriminant_index >= 0 | |
9558 | && discriminant_index < type->num_fields ())); | |
c9317f21 | 9559 | gdb_assert (default_index == -1 |
1f704f76 | 9560 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9561 | |
9c6a1327 | 9562 | /* We have one variant for each non-discriminant field. */ |
57d02173 TT |
9563 | int n_variants = type->num_fields (); |
9564 | if (discriminant_index != -1) | |
9565 | --n_variants; | |
c9317f21 | 9566 | |
9c6a1327 TT |
9567 | variant *variants = new (obstack) variant[n_variants]; |
9568 | int var_idx = 0; | |
9569 | int range_idx = 0; | |
1f704f76 | 9570 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9571 | { |
9572 | if (i == discriminant_index) | |
9573 | continue; | |
c9317f21 | 9574 | |
9c6a1327 TT |
9575 | variants[var_idx].first_field = i; |
9576 | variants[var_idx].last_field = i + 1; | |
9577 | ||
9578 | /* The default field does not need a range, but other fields do. | |
9579 | We skipped the discriminant above. */ | |
9580 | if (i != default_index) | |
9581 | { | |
9582 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9583 | ++range_idx; | |
9584 | } | |
c9317f21 | 9585 | |
9c6a1327 TT |
9586 | ++var_idx; |
9587 | } | |
9588 | ||
9589 | gdb_assert (range_idx == ranges.size ()); | |
9590 | gdb_assert (var_idx == n_variants); | |
9591 | ||
9592 | variant_part *part = new (obstack) variant_part; | |
9593 | part->discriminant_index = discriminant_index; | |
57d02173 TT |
9594 | /* If there is no discriminant, then whether it is signed is of no |
9595 | consequence. */ | |
9596 | part->is_unsigned | |
9597 | = (discriminant_index == -1 | |
9598 | ? false | |
c6d940a9 | 9599 | : type->field (discriminant_index).type ()->is_unsigned ()); |
9c6a1327 TT |
9600 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9601 | ||
9602 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9603 | gdb::array_view<variant_part> *prop_value | |
9604 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9605 | |
9c6a1327 | 9606 | struct dynamic_prop prop; |
8c2e4e06 | 9607 | prop.set_variant_parts (prop_value); |
9c6a1327 | 9608 | |
5c54719c | 9609 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9610 | } |
9611 | ||
9612 | /* Some versions of rustc emitted enums in an unusual way. | |
9613 | ||
9614 | Ordinary enums were emitted as unions. The first element of each | |
9615 | structure in the union was named "RUST$ENUM$DISR". This element | |
9616 | held the discriminant. | |
9617 | ||
9618 | These versions of Rust also implemented the "non-zero" | |
9619 | optimization. When the enum had two values, and one is empty and | |
9620 | the other holds a pointer that cannot be zero, the pointer is used | |
9621 | as the discriminant, with a zero value meaning the empty variant. | |
9622 | Here, the union's first member is of the form | |
9623 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9624 | where the fieldnos are the indices of the fields that should be | |
9625 | traversed in order to find the field (which may be several fields deep) | |
9626 | and the variantname is the name of the variant of the case when the | |
9627 | field is zero. | |
9628 | ||
9629 | This function recognizes whether TYPE is of one of these forms, | |
9630 | and, if so, smashes it to be a variant type. */ | |
9631 | ||
9632 | static void | |
9633 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9634 | { | |
78134374 | 9635 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9636 | |
9637 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9638 | if (type->num_fields () == 0) |
c9317f21 TT |
9639 | return; |
9640 | ||
9641 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9642 | if (type->num_fields () == 1 |
c9317f21 TT |
9643 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9644 | { | |
9645 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9646 | ||
9647 | /* Decode the field name to find the offset of the | |
9648 | discriminant. */ | |
9649 | ULONGEST bit_offset = 0; | |
940da03e | 9650 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9651 | while (name[0] >= '0' && name[0] <= '9') |
9652 | { | |
9653 | char *tail; | |
9654 | unsigned long index = strtoul (name, &tail, 10); | |
9655 | name = tail; | |
9656 | if (*name != '$' | |
1f704f76 | 9657 | || index >= field_type->num_fields () |
c9317f21 TT |
9658 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9659 | != FIELD_LOC_KIND_BITPOS)) | |
9660 | { | |
b98664d3 | 9661 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9662 | "[in module %s]"), |
9663 | TYPE_FIELD_NAME (type, 0), | |
9664 | objfile_name (objfile)); | |
9665 | return; | |
9666 | } | |
9667 | ++name; | |
9668 | ||
9669 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9670 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9671 | } |
9672 | ||
9c6a1327 TT |
9673 | /* Smash this type to be a structure type. We have to do this |
9674 | because the type has already been recorded. */ | |
67607e24 | 9675 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9676 | type->set_num_fields (3); |
9c6a1327 | 9677 | /* Save the field we care about. */ |
ceacbf6e | 9678 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9679 | type->set_fields |
9680 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9681 | |
9c6a1327 | 9682 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9683 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9684 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9685 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9686 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9687 | |
9688 | /* The order of fields doesn't really matter, so put the real | |
9689 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9690 | type->field (1) = saved_field; |
9c6a1327 | 9691 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9692 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9693 | type->field (1).type ()->set_name | |
7d93a1e0 | 9694 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9695 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9696 | |
9697 | const char *dataless_name | |
7d93a1e0 | 9698 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9699 | name); |
9700 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9701 | dataless_name); | |
5d14b6e5 | 9702 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9703 | /* NAME points into the original discriminant name, which |
9704 | already has the correct lifetime. */ | |
9c6a1327 | 9705 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9706 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9707 | |
9c6a1327 TT |
9708 | /* Indicate that this is a variant type. */ |
9709 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9710 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9711 | } |
77c2dba3 TT |
9712 | /* A union with a single anonymous field is probably an old-style |
9713 | univariant enum. */ | |
1f704f76 | 9714 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9715 | { |
c9317f21 TT |
9716 | /* Smash this type to be a structure type. We have to do this |
9717 | because the type has already been recorded. */ | |
67607e24 | 9718 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9719 | |
940da03e | 9720 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9721 | const char *variant_name |
7d93a1e0 | 9722 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9723 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9724 | field_type->set_name |
9725 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9726 | type->name (), variant_name)); |
57d02173 TT |
9727 | |
9728 | alloc_rust_variant (&objfile->objfile_obstack, type, -1, 0, {}); | |
c9317f21 TT |
9729 | } |
9730 | else | |
9731 | { | |
9732 | struct type *disr_type = nullptr; | |
1f704f76 | 9733 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9734 | { |
940da03e | 9735 | disr_type = type->field (i).type (); |
c9317f21 | 9736 | |
78134374 | 9737 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9738 | { |
9739 | /* All fields of a true enum will be structs. */ | |
9740 | return; | |
9741 | } | |
1f704f76 | 9742 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9743 | { |
9744 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9745 | disr_type = nullptr; |
c9317f21 TT |
9746 | } |
9747 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9748 | "RUST$ENUM$DISR") != 0) | |
9749 | { | |
9750 | /* Not a Rust enum. */ | |
9751 | return; | |
9752 | } | |
9753 | else | |
9754 | { | |
9755 | /* Found one. */ | |
9756 | break; | |
9757 | } | |
9758 | } | |
9759 | ||
9760 | /* If we got here without a discriminant, then it's probably | |
9761 | just a union. */ | |
9762 | if (disr_type == nullptr) | |
9763 | return; | |
9764 | ||
9765 | /* Smash this type to be a structure type. We have to do this | |
9766 | because the type has already been recorded. */ | |
67607e24 | 9767 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9768 | |
9c6a1327 | 9769 | /* Make space for the discriminant field. */ |
ceacbf6e | 9770 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9771 | field *new_fields |
1f704f76 | 9772 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9773 | * sizeof (struct field))); |
80fc5e77 | 9774 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9775 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9776 | type->set_fields (new_fields); |
1f704f76 | 9777 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9778 | |
9779 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9780 | type->field (0) = *disr_field; |
9c6a1327 TT |
9781 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9782 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9783 | |
9784 | /* We need a way to find the correct discriminant given a | |
9785 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9786 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9787 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9788 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9789 | { |
9790 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9791 | { | |
9792 | const char *name | |
9793 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9794 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9795 | } | |
9796 | } | |
9797 | ||
1f704f76 | 9798 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9799 | /* We don't need a range entry for the discriminant, but we do |
9800 | need one for every other field, as there is no default | |
9801 | variant. */ | |
9802 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9803 | discriminant_range, | |
9804 | n_fields - 1); | |
c9317f21 TT |
9805 | /* Skip the discriminant here. */ |
9806 | for (int i = 1; i < n_fields; ++i) | |
9807 | { | |
9808 | /* Find the final word in the name of this variant's type. | |
9809 | That name can be used to look up the correct | |
9810 | discriminant. */ | |
9811 | const char *variant_name | |
940da03e | 9812 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9813 | |
9814 | auto iter = discriminant_map.find (variant_name); | |
9815 | if (iter != discriminant_map.end ()) | |
9c6a1327 | 9816 | { |
57d02173 TT |
9817 | ranges[i - 1].low = iter->second; |
9818 | ranges[i - 1].high = iter->second; | |
9c6a1327 | 9819 | } |
c9317f21 | 9820 | |
57d02173 TT |
9821 | /* In Rust, each element should have the size of the |
9822 | enclosing enum. */ | |
9823 | TYPE_LENGTH (type->field (i).type ()) = TYPE_LENGTH (type); | |
9824 | ||
bedda9ac | 9825 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9826 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9827 | if (sub_type->num_fields () > 0) |
bedda9ac | 9828 | { |
5e33d5f4 | 9829 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9830 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9831 | } |
9c6a1327 | 9832 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9833 | sub_type->set_name |
9834 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9835 | type->name (), variant_name)); |
c9317f21 | 9836 | } |
9c6a1327 TT |
9837 | |
9838 | /* Indicate that this is a variant type. */ | |
a1520ad8 | 9839 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, -1, |
9c6a1327 TT |
9840 | gdb::array_view<discriminant_range> (ranges, |
9841 | n_fields - 1)); | |
c9317f21 TT |
9842 | } |
9843 | } | |
9844 | ||
9845 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9846 | ||
9847 | static void | |
9848 | rust_union_quirks (struct dwarf2_cu *cu) | |
9849 | { | |
9850 | gdb_assert (cu->language == language_rust); | |
52941706 | 9851 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9852 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9853 | /* We don't need this any more. */ |
9854 | cu->rust_unions.clear (); | |
c9317f21 TT |
9855 | } |
9856 | ||
8adb8487 TT |
9857 | /* See read.h. */ |
9858 | ||
9859 | type_unit_group_unshareable * | |
9860 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9861 | { | |
9862 | auto iter = this->m_type_units.find (tu_group); | |
9863 | if (iter != this->m_type_units.end ()) | |
9864 | return iter->second.get (); | |
9865 | ||
9866 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9867 | type_unit_group_unshareable *result = uniq.get (); | |
9868 | this->m_type_units[tu_group] = std::move (uniq); | |
9869 | return result; | |
9870 | } | |
9871 | ||
e286671b TT |
9872 | struct type * |
9873 | dwarf2_per_objfile::get_type_for_signatured_type | |
9874 | (signatured_type *sig_type) const | |
9875 | { | |
9876 | auto iter = this->m_type_map.find (sig_type); | |
9877 | if (iter == this->m_type_map.end ()) | |
9878 | return nullptr; | |
9879 | ||
9880 | return iter->second; | |
9881 | } | |
9882 | ||
9883 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9884 | (signatured_type *sig_type, struct type *type) | |
9885 | { | |
9886 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9887 | ||
9888 | this->m_type_map[sig_type] = type; | |
9889 | } | |
9890 | ||
95554aad TT |
9891 | /* A helper function for computing the list of all symbol tables |
9892 | included by PER_CU. */ | |
9893 | ||
9894 | static void | |
4c39bc03 | 9895 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9896 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9897 | dwarf2_per_cu_data *per_cu, |
9898 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9899 | struct compunit_symtab *immediate_parent) |
95554aad | 9900 | { |
af758d11 | 9901 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9902 | if (*slot != NULL) |
9903 | { | |
9904 | /* This inclusion and its children have been processed. */ | |
9905 | return; | |
9906 | } | |
9907 | ||
9908 | *slot = per_cu; | |
af758d11 | 9909 | |
95554aad | 9910 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9911 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9912 | if (cust != NULL) |
ec94af83 DE |
9913 | { |
9914 | /* If this is a type unit only add its symbol table if we haven't | |
9915 | seen it yet (type unit per_cu's can share symtabs). */ | |
9916 | if (per_cu->is_debug_types) | |
9917 | { | |
43f3e411 | 9918 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9919 | if (*slot == NULL) |
9920 | { | |
43f3e411 | 9921 | *slot = cust; |
4c39bc03 | 9922 | result->push_back (cust); |
43f3e411 DE |
9923 | if (cust->user == NULL) |
9924 | cust->user = immediate_parent; | |
ec94af83 DE |
9925 | } |
9926 | } | |
9927 | else | |
f9125b6c | 9928 | { |
4c39bc03 | 9929 | result->push_back (cust); |
43f3e411 DE |
9930 | if (cust->user == NULL) |
9931 | cust->user = immediate_parent; | |
f9125b6c | 9932 | } |
ec94af83 | 9933 | } |
95554aad | 9934 | |
ae640021 AB |
9935 | if (!per_cu->imported_symtabs_empty ()) |
9936 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9937 | { | |
9938 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9939 | all_type_symtabs, ptr, per_objfile, |
9940 | cust); | |
ae640021 | 9941 | } |
95554aad TT |
9942 | } |
9943 | ||
43f3e411 | 9944 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9945 | PER_CU. */ |
9946 | ||
9947 | static void | |
43182c09 SM |
9948 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9949 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9950 | { |
f4dc4d17 DE |
9951 | gdb_assert (! per_cu->is_debug_types); |
9952 | ||
ae640021 | 9953 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9954 | { |
ae640021 | 9955 | int len; |
4c39bc03 | 9956 | std::vector<compunit_symtab *> result_symtabs; |
43182c09 | 9957 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9958 | |
9959 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9960 | if (cust == NULL) |
95554aad TT |
9961 | return; |
9962 | ||
280a9412 TT |
9963 | htab_up all_children (htab_create_alloc (1, htab_hash_pointer, |
9964 | htab_eq_pointer, | |
9965 | NULL, xcalloc, xfree)); | |
9966 | htab_up all_type_symtabs (htab_create_alloc (1, htab_hash_pointer, | |
9967 | htab_eq_pointer, | |
9968 | NULL, xcalloc, xfree)); | |
95554aad | 9969 | |
ae640021 | 9970 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 | 9971 | { |
280a9412 TT |
9972 | recursively_compute_inclusions (&result_symtabs, all_children.get (), |
9973 | all_type_symtabs.get (), ptr, | |
9974 | per_objfile, cust); | |
ec94af83 | 9975 | } |
95554aad | 9976 | |
ec94af83 | 9977 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9978 | len = result_symtabs.size (); |
43f3e411 | 9979 | cust->includes |
f6e649dd | 9980 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9981 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9982 | memcpy (cust->includes, result_symtabs.data (), |
9983 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9984 | cust->includes[len] = NULL; |
95554aad TT |
9985 | } |
9986 | } | |
9987 | ||
9988 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9989 | read. */ | |
9990 | ||
9991 | static void | |
976ca316 | 9992 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9993 | { |
976ca316 | 9994 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9995 | { |
9996 | if (! iter->is_debug_types) | |
976ca316 | 9997 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 9998 | } |
95554aad | 9999 | |
976ca316 | 10000 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
10001 | } |
10002 | ||
8fc0b21d | 10003 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
10004 | already been loaded into memory. */ |
10005 | ||
10006 | static void | |
8fc0b21d | 10007 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 10008 | { |
976ca316 SM |
10009 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10010 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 10011 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 10012 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10013 | struct compunit_symtab *cust; |
10b3939b | 10014 | CORE_ADDR baseaddr; |
4359dff1 | 10015 | struct block *static_block; |
3e29f34a | 10016 | CORE_ADDR addr; |
10b3939b | 10017 | |
b3b3bada | 10018 | baseaddr = objfile->text_section_offset (); |
10b3939b | 10019 | |
c89b44cd TT |
10020 | /* Clear the list here in case something was left over. */ |
10021 | cu->method_list.clear (); | |
10b3939b | 10022 | |
95554aad TT |
10023 | cu->language = pretend_language; |
10024 | cu->language_defn = language_def (cu->language); | |
10025 | ||
1c47ec3e TV |
10026 | dwarf2_find_base_address (cu->dies, cu); |
10027 | ||
c906108c | 10028 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10029 | process_die (cu->dies, cu); |
c906108c | 10030 | |
a766d390 DE |
10031 | /* For now fudge the Go package. */ |
10032 | if (cu->language == language_go) | |
10033 | fixup_go_packaging (cu); | |
10034 | ||
5f48f8f3 | 10035 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
10036 | should be complete, and it should now be safe to compute all of the |
10037 | physnames. */ | |
10038 | compute_delayed_physnames (cu); | |
3da10d80 | 10039 | |
c9317f21 TT |
10040 | if (cu->language == language_rust) |
10041 | rust_union_quirks (cu); | |
10042 | ||
fae299cd DC |
10043 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10044 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10045 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10046 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10047 | |
3e29f34a | 10048 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 10049 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10050 | |
10051 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10052 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10053 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10054 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10055 | this comp unit. */ | |
10056 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10057 | ||
c24bdb02 | 10058 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
10059 | SECT_OFF_TEXT (objfile), |
10060 | 0); | |
c906108c | 10061 | |
43f3e411 | 10062 | if (cust != NULL) |
c906108c | 10063 | { |
df15bd07 | 10064 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10065 | |
8be455d7 JK |
10066 | /* Set symtab language to language from DW_AT_language. If the |
10067 | compilation is from a C file generated by language preprocessors, do | |
10068 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10069 | if (!(cu->language == language_c |
40e3ad0e | 10070 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10071 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10072 | |
10073 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10074 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10075 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10076 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10077 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10078 | |
10079 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10080 | needed, it would be wrong due to missing DW_AT_producer there. | |
10081 | ||
10082 | Still one can confuse GDB by using non-standard GCC compilation | |
10083 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 10084 | */ |
ab260dad | 10085 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10086 | cust->locations_valid = 1; |
e0d00bc7 JK |
10087 | |
10088 | if (gcc_4_minor >= 5) | |
43f3e411 | 10089 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10090 | |
43f3e411 | 10091 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10092 | } |
9291a0cd | 10093 | |
976ca316 | 10094 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 10095 | |
95554aad | 10096 | /* Push it for inclusion processing later. */ |
976ca316 | 10097 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
10098 | |
10099 | /* Not needed any more. */ | |
c24bdb02 | 10100 | cu->reset_builder (); |
f4dc4d17 | 10101 | } |
45cfd468 | 10102 | |
8fc0b21d | 10103 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
10104 | already been loaded into memory. */ |
10105 | ||
10106 | static void | |
8fc0b21d | 10107 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
10108 | enum language pretend_language) |
10109 | { | |
976ca316 SM |
10110 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10111 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 10112 | struct compunit_symtab *cust; |
0186c6a7 DE |
10113 | struct signatured_type *sig_type; |
10114 | ||
8fc0b21d SM |
10115 | gdb_assert (cu->per_cu->is_debug_types); |
10116 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 10117 | |
c89b44cd TT |
10118 | /* Clear the list here in case something was left over. */ |
10119 | cu->method_list.clear (); | |
f4dc4d17 | 10120 | |
f4dc4d17 DE |
10121 | cu->language = pretend_language; |
10122 | cu->language_defn = language_def (cu->language); | |
10123 | ||
10124 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10125 | process_die (cu->dies, cu); | |
10126 | ||
10127 | /* For now fudge the Go package. */ | |
10128 | if (cu->language == language_go) | |
10129 | fixup_go_packaging (cu); | |
10130 | ||
5f48f8f3 | 10131 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10132 | should be complete, and it should now be safe to compute all of the |
10133 | physnames. */ | |
10134 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10135 | |
c9317f21 TT |
10136 | if (cu->language == language_rust) |
10137 | rust_union_quirks (cu); | |
10138 | ||
f4dc4d17 DE |
10139 | /* TUs share symbol tables. |
10140 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10141 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10142 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 10143 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 10144 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 10145 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 10146 | { |
c24bdb02 KS |
10147 | buildsym_compunit *builder = cu->get_builder (); |
10148 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 10149 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 10150 | |
43f3e411 | 10151 | if (cust != NULL) |
f4dc4d17 DE |
10152 | { |
10153 | /* Set symtab language to language from DW_AT_language. If the | |
10154 | compilation is from a C file generated by language preprocessors, | |
10155 | do not set the language if it was already deduced by | |
10156 | start_subfile. */ | |
43f3e411 DE |
10157 | if (!(cu->language == language_c |
10158 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10159 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10160 | } |
10161 | } | |
10162 | else | |
10163 | { | |
c24bdb02 | 10164 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 10165 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
10166 | } |
10167 | ||
976ca316 | 10168 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
10169 | |
10170 | /* Not needed any more. */ | |
c24bdb02 | 10171 | cu->reset_builder (); |
c906108c SS |
10172 | } |
10173 | ||
95554aad TT |
10174 | /* Process an imported unit DIE. */ |
10175 | ||
10176 | static void | |
10177 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10178 | { | |
10179 | struct attribute *attr; | |
10180 | ||
f4dc4d17 DE |
10181 | /* For now we don't handle imported units in type units. */ |
10182 | if (cu->per_cu->is_debug_types) | |
10183 | { | |
10184 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10185 | " supported in type units [in module %s]"), | |
5e22e966 | 10186 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
10187 | } |
10188 | ||
95554aad TT |
10189 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10190 | if (attr != NULL) | |
10191 | { | |
0826b30a | 10192 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 10193 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 10194 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 10195 | dwarf2_per_cu_data *per_cu |
ab432490 | 10196 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 10197 | |
58990295 TV |
10198 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
10199 | into another compilation unit, at root level. Regard this as a hint, | |
10200 | and ignore it. */ | |
10201 | if (die->parent && die->parent->parent == NULL | |
10202 | && per_cu->unit_type == DW_UT_compile | |
10203 | && per_cu->lang == language_cplus) | |
10204 | return; | |
10205 | ||
69d751e3 | 10206 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 10207 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
10208 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
10209 | false, cu->language); | |
95554aad | 10210 | |
ae640021 | 10211 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10212 | } |
10213 | } | |
10214 | ||
4c8aa72d PA |
10215 | /* RAII object that represents a process_die scope: i.e., |
10216 | starts/finishes processing a DIE. */ | |
10217 | class process_die_scope | |
adde2bff | 10218 | { |
4c8aa72d PA |
10219 | public: |
10220 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10221 | : m_die (die), m_cu (cu) | |
10222 | { | |
10223 | /* We should only be processing DIEs not already in process. */ | |
10224 | gdb_assert (!m_die->in_process); | |
10225 | m_die->in_process = true; | |
10226 | } | |
8c3cb9fa | 10227 | |
4c8aa72d PA |
10228 | ~process_die_scope () |
10229 | { | |
10230 | m_die->in_process = false; | |
10231 | ||
10232 | /* If we're done processing the DIE for the CU that owns the line | |
10233 | header, we don't need the line header anymore. */ | |
10234 | if (m_cu->line_header_die_owner == m_die) | |
10235 | { | |
10236 | delete m_cu->line_header; | |
10237 | m_cu->line_header = NULL; | |
10238 | m_cu->line_header_die_owner = NULL; | |
10239 | } | |
10240 | } | |
10241 | ||
10242 | private: | |
10243 | die_info *m_die; | |
10244 | dwarf2_cu *m_cu; | |
10245 | }; | |
adde2bff | 10246 | |
c906108c SS |
10247 | /* Process a die and its children. */ |
10248 | ||
10249 | static void | |
e7c27a73 | 10250 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10251 | { |
4c8aa72d | 10252 | process_die_scope scope (die, cu); |
adde2bff | 10253 | |
c906108c SS |
10254 | switch (die->tag) |
10255 | { | |
10256 | case DW_TAG_padding: | |
10257 | break; | |
10258 | case DW_TAG_compile_unit: | |
95554aad | 10259 | case DW_TAG_partial_unit: |
e7c27a73 | 10260 | read_file_scope (die, cu); |
c906108c | 10261 | break; |
348e048f DE |
10262 | case DW_TAG_type_unit: |
10263 | read_type_unit_scope (die, cu); | |
10264 | break; | |
c906108c | 10265 | case DW_TAG_subprogram: |
0a4b0913 AB |
10266 | /* Nested subprograms in Fortran get a prefix. */ |
10267 | if (cu->language == language_fortran | |
10268 | && die->parent != NULL | |
10269 | && die->parent->tag == DW_TAG_subprogram) | |
10270 | cu->processing_has_namespace_info = true; | |
10271 | /* Fall through. */ | |
c906108c | 10272 | case DW_TAG_inlined_subroutine: |
edb3359d | 10273 | read_func_scope (die, cu); |
c906108c SS |
10274 | break; |
10275 | case DW_TAG_lexical_block: | |
14898363 L |
10276 | case DW_TAG_try_block: |
10277 | case DW_TAG_catch_block: | |
e7c27a73 | 10278 | read_lexical_block_scope (die, cu); |
c906108c | 10279 | break; |
216f72a1 | 10280 | case DW_TAG_call_site: |
96408a79 SA |
10281 | case DW_TAG_GNU_call_site: |
10282 | read_call_site_scope (die, cu); | |
10283 | break; | |
c906108c | 10284 | case DW_TAG_class_type: |
680b30c7 | 10285 | case DW_TAG_interface_type: |
c906108c SS |
10286 | case DW_TAG_structure_type: |
10287 | case DW_TAG_union_type: | |
134d01f1 | 10288 | process_structure_scope (die, cu); |
c906108c SS |
10289 | break; |
10290 | case DW_TAG_enumeration_type: | |
134d01f1 | 10291 | process_enumeration_scope (die, cu); |
c906108c | 10292 | break; |
134d01f1 | 10293 | |
f792889a DJ |
10294 | /* These dies have a type, but processing them does not create |
10295 | a symbol or recurse to process the children. Therefore we can | |
10296 | read them on-demand through read_type_die. */ | |
c906108c | 10297 | case DW_TAG_subroutine_type: |
72019c9c | 10298 | case DW_TAG_set_type: |
c906108c | 10299 | case DW_TAG_pointer_type: |
c906108c | 10300 | case DW_TAG_ptr_to_member_type: |
c906108c | 10301 | case DW_TAG_reference_type: |
4297a3f0 | 10302 | case DW_TAG_rvalue_reference_type: |
c906108c | 10303 | case DW_TAG_string_type: |
c906108c | 10304 | break; |
134d01f1 | 10305 | |
d8f62e84 TT |
10306 | case DW_TAG_array_type: |
10307 | /* We only need to handle this case for Ada -- in other | |
10308 | languages, it's normal for the compiler to emit a typedef | |
10309 | instead. */ | |
10310 | if (cu->language != language_ada) | |
10311 | break; | |
10312 | /* FALLTHROUGH */ | |
c906108c | 10313 | case DW_TAG_base_type: |
a02abb62 | 10314 | case DW_TAG_subrange_type: |
cb249c71 | 10315 | case DW_TAG_typedef: |
134d01f1 | 10316 | /* Add a typedef symbol for the type definition, if it has a |
dda83cd7 | 10317 | DW_AT_name. */ |
f792889a | 10318 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10319 | break; |
c906108c | 10320 | case DW_TAG_common_block: |
e7c27a73 | 10321 | read_common_block (die, cu); |
c906108c SS |
10322 | break; |
10323 | case DW_TAG_common_inclusion: | |
10324 | break; | |
d9fa45fe | 10325 | case DW_TAG_namespace: |
9068261f | 10326 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10327 | read_namespace (die, cu); |
d9fa45fe | 10328 | break; |
5d7cb8df | 10329 | case DW_TAG_module: |
9068261f | 10330 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10331 | read_module (die, cu); |
10332 | break; | |
d9fa45fe | 10333 | case DW_TAG_imported_declaration: |
9068261f | 10334 | cu->processing_has_namespace_info = true; |
74921315 KS |
10335 | if (read_namespace_alias (die, cu)) |
10336 | break; | |
86a73007 TT |
10337 | /* The declaration is not a global namespace alias. */ |
10338 | /* Fall through. */ | |
d9fa45fe | 10339 | case DW_TAG_imported_module: |
9068261f | 10340 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10341 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10342 | || cu->language != language_fortran)) | |
b98664d3 | 10343 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10344 | dwarf_tag_name (die->tag)); |
10345 | read_import_statement (die, cu); | |
d9fa45fe | 10346 | break; |
95554aad TT |
10347 | |
10348 | case DW_TAG_imported_unit: | |
10349 | process_imported_unit_die (die, cu); | |
10350 | break; | |
10351 | ||
71a3c369 TT |
10352 | case DW_TAG_variable: |
10353 | read_variable (die, cu); | |
10354 | break; | |
10355 | ||
c906108c | 10356 | default: |
e7c27a73 | 10357 | new_symbol (die, NULL, cu); |
c906108c SS |
10358 | break; |
10359 | } | |
10360 | } | |
ca69b9e6 DE |
10361 | \f |
10362 | /* DWARF name computation. */ | |
c906108c | 10363 | |
94af9270 KS |
10364 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10365 | needs to have the name of the scope prepended to the name listed in the | |
10366 | die. */ | |
10367 | ||
10368 | static int | |
10369 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10370 | { | |
1c809c68 TT |
10371 | struct attribute *attr; |
10372 | ||
94af9270 KS |
10373 | switch (die->tag) |
10374 | { | |
10375 | case DW_TAG_namespace: | |
10376 | case DW_TAG_typedef: | |
10377 | case DW_TAG_class_type: | |
10378 | case DW_TAG_interface_type: | |
10379 | case DW_TAG_structure_type: | |
10380 | case DW_TAG_union_type: | |
10381 | case DW_TAG_enumeration_type: | |
10382 | case DW_TAG_enumerator: | |
10383 | case DW_TAG_subprogram: | |
08a76f8a | 10384 | case DW_TAG_inlined_subroutine: |
94af9270 | 10385 | case DW_TAG_member: |
74921315 | 10386 | case DW_TAG_imported_declaration: |
94af9270 KS |
10387 | return 1; |
10388 | ||
10389 | case DW_TAG_variable: | |
c2b0a229 | 10390 | case DW_TAG_constant: |
94af9270 KS |
10391 | /* We only need to prefix "globally" visible variables. These include |
10392 | any variable marked with DW_AT_external or any variable that | |
10393 | lives in a namespace. [Variables in anonymous namespaces | |
10394 | require prefixing, but they are not DW_AT_external.] */ | |
10395 | ||
10396 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10397 | { | |
10398 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10399 | |
94af9270 KS |
10400 | return die_needs_namespace (die_specification (die, &spec_cu), |
10401 | spec_cu); | |
10402 | } | |
10403 | ||
1c809c68 | 10404 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10405 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10406 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10407 | return 0; |
10408 | /* A variable in a lexical block of some kind does not need a | |
10409 | namespace, even though in C++ such variables may be external | |
10410 | and have a mangled name. */ | |
10411 | if (die->parent->tag == DW_TAG_lexical_block | |
10412 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10413 | || die->parent->tag == DW_TAG_catch_block |
10414 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10415 | return 0; |
10416 | return 1; | |
94af9270 KS |
10417 | |
10418 | default: | |
10419 | return 0; | |
10420 | } | |
10421 | } | |
10422 | ||
73b9be8b KS |
10423 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10424 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10425 | defined for the given DIE. */ | |
10426 | ||
10427 | static struct attribute * | |
10428 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10429 | { | |
10430 | struct attribute *attr; | |
10431 | ||
10432 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10433 | if (attr == NULL) | |
10434 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10435 | ||
10436 | return attr; | |
10437 | } | |
10438 | ||
10439 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10440 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10441 | defined for the given DIE. */ | |
10442 | ||
10443 | static const char * | |
10444 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10445 | { | |
10446 | const char *linkage_name; | |
10447 | ||
10448 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10449 | if (linkage_name == NULL) | |
10450 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10451 | ||
787de330 TT |
10452 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10453 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10454 | if (cu->language == language_rust && linkage_name != NULL | |
10455 | && strchr (linkage_name, '{') != NULL) | |
10456 | linkage_name = NULL; | |
10457 | ||
73b9be8b KS |
10458 | return linkage_name; |
10459 | } | |
10460 | ||
94af9270 | 10461 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10462 | compute the physname for the object, which include a method's: |
9c37b5ae | 10463 | - formal parameters (C++), |
a766d390 | 10464 | - receiver type (Go), |
a766d390 DE |
10465 | |
10466 | The term "physname" is a bit confusing. | |
10467 | For C++, for example, it is the demangled name. | |
10468 | For Go, for example, it's the mangled name. | |
94af9270 | 10469 | |
af6b7be1 JB |
10470 | For Ada, return the DIE's linkage name rather than the fully qualified |
10471 | name. PHYSNAME is ignored.. | |
10472 | ||
5989a64e | 10473 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10474 | canonicalized. */ |
94af9270 KS |
10475 | |
10476 | static const char * | |
15d034d0 TT |
10477 | dwarf2_compute_name (const char *name, |
10478 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10479 | int physname) |
10480 | { | |
5e22e966 | 10481 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10482 | |
94af9270 KS |
10483 | if (name == NULL) |
10484 | name = dwarf2_name (die, cu); | |
10485 | ||
2ee7123e DE |
10486 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10487 | but otherwise compute it by typename_concat inside GDB. | |
10488 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10489 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10490 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10491 | will set the demangled name to the result of dwarf2_full_name, and it is |
10492 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10493 | if (cu->language == language_ada |
10494 | || (cu->language == language_fortran && physname)) | |
10495 | { | |
10496 | /* For Ada unit, we prefer the linkage name over the name, as | |
10497 | the former contains the exported name, which the user expects | |
10498 | to be able to reference. Ideally, we want the user to be able | |
10499 | to reference this entity using either natural or linkage name, | |
10500 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10501 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10502 | |
2ee7123e DE |
10503 | if (linkage_name != NULL) |
10504 | return linkage_name; | |
f55ee35c JK |
10505 | } |
10506 | ||
94af9270 KS |
10507 | /* These are the only languages we know how to qualify names in. */ |
10508 | if (name != NULL | |
9c37b5ae | 10509 | && (cu->language == language_cplus |
c44af4eb TT |
10510 | || cu->language == language_fortran || cu->language == language_d |
10511 | || cu->language == language_rust)) | |
94af9270 KS |
10512 | { |
10513 | if (die_needs_namespace (die, cu)) | |
10514 | { | |
0d5cff50 | 10515 | const char *prefix; |
34a68019 | 10516 | const char *canonical_name = NULL; |
94af9270 | 10517 | |
d7e74731 PA |
10518 | string_file buf; |
10519 | ||
94af9270 | 10520 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10521 | if (*prefix != '\0') |
10522 | { | |
43816ebc TT |
10523 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10524 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10525 | |
43816ebc | 10526 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10527 | } |
10528 | else | |
d7e74731 | 10529 | buf.puts (name); |
94af9270 | 10530 | |
98bfdba5 PA |
10531 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10532 | as children with DW_TAG_template_type_param or | |
10533 | DW_TAG_value_type_param. If the latter, add them to the name | |
10534 | here. If the name already has template parameters, then | |
10535 | skip this step; some versions of GCC emit both, and | |
10536 | it is more efficient to use the pre-computed name. | |
10537 | ||
10538 | Something to keep in mind about this process: it is very | |
10539 | unlikely, or in some cases downright impossible, to produce | |
10540 | something that will match the mangled name of a function. | |
10541 | If the definition of the function has the same debug info, | |
10542 | we should be able to match up with it anyway. But fallbacks | |
10543 | using the minimal symbol, for instance to find a method | |
10544 | implemented in a stripped copy of libstdc++, will not work. | |
10545 | If we do not have debug info for the definition, we will have to | |
10546 | match them up some other way. | |
10547 | ||
10548 | When we do name matching there is a related problem with function | |
10549 | templates; two instantiated function templates are allowed to | |
10550 | differ only by their return types, which we do not add here. */ | |
10551 | ||
10552 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10553 | { | |
10554 | struct attribute *attr; | |
10555 | struct die_info *child; | |
10556 | int first = 1; | |
2c75ccb2 | 10557 | const language_defn *cplus_lang = language_def (cu->language); |
98bfdba5 PA |
10558 | |
10559 | die->building_fullname = 1; | |
10560 | ||
10561 | for (child = die->child; child != NULL; child = child->sibling) | |
10562 | { | |
10563 | struct type *type; | |
12df843f | 10564 | LONGEST value; |
d521ce57 | 10565 | const gdb_byte *bytes; |
98bfdba5 PA |
10566 | struct dwarf2_locexpr_baton *baton; |
10567 | struct value *v; | |
10568 | ||
10569 | if (child->tag != DW_TAG_template_type_param | |
10570 | && child->tag != DW_TAG_template_value_param) | |
10571 | continue; | |
10572 | ||
10573 | if (first) | |
10574 | { | |
d7e74731 | 10575 | buf.puts ("<"); |
98bfdba5 PA |
10576 | first = 0; |
10577 | } | |
10578 | else | |
d7e74731 | 10579 | buf.puts (", "); |
98bfdba5 PA |
10580 | |
10581 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10582 | if (attr == NULL) | |
10583 | { | |
b98664d3 | 10584 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10585 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10586 | continue; |
10587 | } | |
10588 | type = die_type (child, cu); | |
10589 | ||
10590 | if (child->tag == DW_TAG_template_type_param) | |
10591 | { | |
2c75ccb2 AB |
10592 | cplus_lang->print_type (type, "", &buf, -1, 0, |
10593 | &type_print_raw_options); | |
98bfdba5 PA |
10594 | continue; |
10595 | } | |
10596 | ||
10597 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10598 | if (attr == NULL) | |
10599 | { | |
b98664d3 | 10600 | complaint (_("template parameter missing " |
3e43a32a | 10601 | "DW_AT_const_value")); |
d7e74731 | 10602 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10603 | continue; |
10604 | } | |
10605 | ||
10606 | dwarf2_const_value_attr (attr, type, name, | |
10607 | &cu->comp_unit_obstack, cu, | |
10608 | &value, &bytes, &baton); | |
10609 | ||
20ce4123 | 10610 | if (type->has_no_signedness ()) |
98bfdba5 PA |
10611 | /* GDB prints characters as NUMBER 'CHAR'. If that's |
10612 | changed, this can use value_print instead. */ | |
2c75ccb2 | 10613 | cplus_lang->printchar (value, type, &buf); |
98bfdba5 PA |
10614 | else |
10615 | { | |
10616 | struct value_print_options opts; | |
10617 | ||
10618 | if (baton != NULL) | |
10619 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10620 | baton->data, | |
10621 | baton->size, | |
9f47c707 SM |
10622 | baton->per_cu, |
10623 | baton->per_objfile); | |
98bfdba5 PA |
10624 | else if (bytes != NULL) |
10625 | { | |
10626 | v = allocate_value (type); | |
10627 | memcpy (value_contents_writeable (v), bytes, | |
10628 | TYPE_LENGTH (type)); | |
10629 | } | |
10630 | else | |
10631 | v = value_from_longest (type, value); | |
10632 | ||
3e43a32a MS |
10633 | /* Specify decimal so that we do not depend on |
10634 | the radix. */ | |
98bfdba5 PA |
10635 | get_formatted_print_options (&opts, 'd'); |
10636 | opts.raw = 1; | |
d7e74731 | 10637 | value_print (v, &buf, &opts); |
98bfdba5 | 10638 | release_value (v); |
98bfdba5 PA |
10639 | } |
10640 | } | |
10641 | ||
10642 | die->building_fullname = 0; | |
10643 | ||
10644 | if (!first) | |
10645 | { | |
10646 | /* Close the argument list, with a space if necessary | |
10647 | (nested templates). */ | |
d7e74731 PA |
10648 | if (!buf.empty () && buf.string ().back () == '>') |
10649 | buf.puts (" >"); | |
98bfdba5 | 10650 | else |
d7e74731 | 10651 | buf.puts (">"); |
98bfdba5 PA |
10652 | } |
10653 | } | |
10654 | ||
9c37b5ae | 10655 | /* For C++ methods, append formal parameter type |
94af9270 | 10656 | information, if PHYSNAME. */ |
6e70227d | 10657 | |
94af9270 | 10658 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10659 | && cu->language == language_cplus) |
94af9270 KS |
10660 | { |
10661 | struct type *type = read_type_die (die, cu); | |
10662 | ||
d7e74731 | 10663 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10664 | &type_print_raw_options); |
94af9270 | 10665 | |
9c37b5ae | 10666 | if (cu->language == language_cplus) |
94af9270 | 10667 | { |
60430eff DJ |
10668 | /* Assume that an artificial first parameter is |
10669 | "this", but do not crash if it is not. RealView | |
10670 | marks unnamed (and thus unused) parameters as | |
10671 | artificial; there is no way to differentiate | |
10672 | the two cases. */ | |
1f704f76 | 10673 | if (type->num_fields () > 0 |
94af9270 | 10674 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10675 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10676 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10677 | buf.puts (" const"); |
94af9270 KS |
10678 | } |
10679 | } | |
10680 | ||
d7e74731 | 10681 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10682 | |
10683 | if (cu->language == language_cplus) | |
34a68019 | 10684 | canonical_name |
322a8516 | 10685 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10686 | objfile); |
34a68019 TT |
10687 | |
10688 | /* If we only computed INTERMEDIATE_NAME, or if | |
10689 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10690 | intern it. */ |
322a8516 | 10691 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10692 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10693 | else |
10694 | name = canonical_name; | |
94af9270 KS |
10695 | } |
10696 | } | |
10697 | ||
10698 | return name; | |
10699 | } | |
10700 | ||
0114d602 DJ |
10701 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10702 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10703 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10704 | not have a name. NAME may either be from a previous call to |
10705 | dwarf2_name or NULL. | |
10706 | ||
9c37b5ae | 10707 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10708 | |
10709 | static const char * | |
15d034d0 | 10710 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10711 | { |
94af9270 KS |
10712 | return dwarf2_compute_name (name, die, cu, 0); |
10713 | } | |
0114d602 | 10714 | |
94af9270 KS |
10715 | /* Construct a physname for the given DIE in CU. NAME may either be |
10716 | from a previous call to dwarf2_name or NULL. The result will be | |
10717 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10718 | name. | |
0114d602 | 10719 | |
9c37b5ae | 10720 | The output string will be canonicalized (if C++). */ |
0114d602 | 10721 | |
94af9270 | 10722 | static const char * |
15d034d0 | 10723 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10724 | { |
5e22e966 | 10725 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10726 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10727 | int need_copy = 1; |
10728 | ||
10729 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10730 | on its own. */ | |
10731 | if (!die_needs_namespace (die, cu)) | |
10732 | return dwarf2_compute_name (name, die, cu, 1); | |
10733 | ||
906bb4c5 TT |
10734 | if (cu->language != language_rust) |
10735 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10736 | |
10737 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10738 | has computed. */ | |
791afaa2 | 10739 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10740 | if (mangled != NULL) |
900e11f9 | 10741 | { |
900e11f9 | 10742 | |
d3355e4d | 10743 | if (language_def (cu->language)->store_sym_names_in_linkage_form_p ()) |
59cc4834 JB |
10744 | { |
10745 | /* Do nothing (do not demangle the symbol name). */ | |
10746 | } | |
a766d390 DE |
10747 | else |
10748 | { | |
0eb876f5 JB |
10749 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10750 | their return type. It is easier for GDB users to search | |
10751 | for such functions as `name(params)' than `long name(params)'. | |
10752 | In such case the minimal symbol names do not match the full | |
10753 | symbol names but for template functions there is never a need | |
10754 | to look up their definition from their declaration so | |
10755 | the only disadvantage remains the minimal symbol variant | |
10756 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10757 | demangled.reset (gdb_demangle (mangled, |
10758 | (DMGL_PARAMS | DMGL_ANSI | |
10759 | | DMGL_RET_DROP))); | |
a766d390 | 10760 | } |
900e11f9 | 10761 | if (demangled) |
791afaa2 | 10762 | canon = demangled.get (); |
900e11f9 JK |
10763 | else |
10764 | { | |
10765 | canon = mangled; | |
10766 | need_copy = 0; | |
10767 | } | |
10768 | } | |
10769 | ||
10770 | if (canon == NULL || check_physname) | |
10771 | { | |
10772 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10773 | ||
10774 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10775 | { | |
10776 | /* It may not mean a bug in GDB. The compiler could also | |
10777 | compute DW_AT_linkage_name incorrectly. But in such case | |
10778 | GDB would need to be bug-to-bug compatible. */ | |
10779 | ||
b98664d3 | 10780 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10781 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10782 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10783 | objfile_name (objfile)); |
900e11f9 JK |
10784 | |
10785 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10786 | is available here - over computed PHYSNAME. It is safer | |
10787 | against both buggy GDB and buggy compilers. */ | |
10788 | ||
10789 | retval = canon; | |
10790 | } | |
10791 | else | |
10792 | { | |
10793 | retval = physname; | |
10794 | need_copy = 0; | |
10795 | } | |
10796 | } | |
10797 | else | |
10798 | retval = canon; | |
10799 | ||
10800 | if (need_copy) | |
be1e3d3e | 10801 | retval = objfile->intern (retval); |
900e11f9 | 10802 | |
900e11f9 | 10803 | return retval; |
0114d602 DJ |
10804 | } |
10805 | ||
74921315 KS |
10806 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10807 | a new symbol for it. | |
10808 | ||
10809 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10810 | ||
10811 | static int | |
10812 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10813 | { | |
10814 | struct attribute *attr; | |
10815 | ||
10816 | /* If the die does not have a name, this is not a namespace | |
10817 | alias. */ | |
10818 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10819 | if (attr != NULL) | |
10820 | { | |
10821 | int num; | |
10822 | struct die_info *d = die; | |
10823 | struct dwarf2_cu *imported_cu = cu; | |
10824 | ||
10825 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10826 | keep inspecting DIEs until we hit the underlying import. */ | |
10827 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10828 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10829 | { | |
10830 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10831 | if (attr == NULL) | |
10832 | break; | |
10833 | ||
10834 | d = follow_die_ref (d, attr, &imported_cu); | |
10835 | if (d->tag != DW_TAG_imported_declaration) | |
10836 | break; | |
10837 | } | |
10838 | ||
10839 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10840 | { | |
b98664d3 | 10841 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10842 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10843 | return 0; |
10844 | } | |
10845 | ||
10846 | if (attr != NULL) | |
10847 | { | |
10848 | struct type *type; | |
0826b30a | 10849 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10850 | |
aa66c379 | 10851 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10852 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10853 | { |
10854 | /* This declaration is a global namespace alias. Add | |
10855 | a symbol for it whose type is the aliased namespace. */ | |
10856 | new_symbol (die, type, cu); | |
10857 | return 1; | |
10858 | } | |
10859 | } | |
10860 | } | |
10861 | ||
10862 | return 0; | |
10863 | } | |
10864 | ||
22cee43f | 10865 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10866 | current context for CU. |
22cee43f PMR |
10867 | |
10868 | For Ada, imported declarations can materialize renamings, which *may* be | |
10869 | global. However it is impossible (for now?) in DWARF to distinguish | |
10870 | "external" imported declarations and "static" ones. As all imported | |
10871 | declarations seem to be static in all other languages, make them all CU-wide | |
10872 | global only in Ada. */ | |
10873 | ||
10874 | static struct using_direct ** | |
804d2729 | 10875 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10876 | { |
c24bdb02 KS |
10877 | if (cu->language == language_ada |
10878 | && cu->get_builder ()->outermost_context_p ()) | |
10879 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10880 | else |
c24bdb02 | 10881 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10882 | } |
10883 | ||
27aa8d6a SW |
10884 | /* Read the import statement specified by the given die and record it. */ |
10885 | ||
10886 | static void | |
10887 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10888 | { | |
5e22e966 | 10889 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10890 | struct attribute *import_attr; |
32019081 | 10891 | struct die_info *imported_die, *child_die; |
de4affc9 | 10892 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10893 | const char *imported_name; |
794684b6 | 10894 | const char *imported_name_prefix; |
13387711 SW |
10895 | const char *canonical_name; |
10896 | const char *import_alias; | |
10897 | const char *imported_declaration = NULL; | |
794684b6 | 10898 | const char *import_prefix; |
eb1e02fd | 10899 | std::vector<const char *> excludes; |
13387711 | 10900 | |
27aa8d6a SW |
10901 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10902 | if (import_attr == NULL) | |
10903 | { | |
b98664d3 | 10904 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10905 | dwarf_tag_name (die->tag)); |
10906 | return; | |
10907 | } | |
10908 | ||
de4affc9 CC |
10909 | imported_cu = cu; |
10910 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10911 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10912 | if (imported_name == NULL) |
10913 | { | |
10914 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10915 | ||
dda83cd7 SM |
10916 | The import in the following code: |
10917 | namespace A | |
10918 | { | |
10919 | typedef int B; | |
10920 | } | |
10921 | ||
10922 | int main () | |
10923 | { | |
10924 | using A::B; | |
10925 | B b; | |
10926 | return b; | |
10927 | } | |
10928 | ||
10929 | ... | |
10930 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10931 | <52> DW_AT_decl_file : 1 | |
10932 | <53> DW_AT_decl_line : 6 | |
10933 | <54> DW_AT_import : <0x75> | |
10934 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10935 | <59> DW_AT_name : B | |
10936 | <5b> DW_AT_decl_file : 1 | |
10937 | <5c> DW_AT_decl_line : 2 | |
10938 | <5d> DW_AT_type : <0x6e> | |
10939 | ... | |
10940 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10941 | <76> DW_AT_byte_size : 4 | |
10942 | <77> DW_AT_encoding : 5 (signed) | |
10943 | ||
10944 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10945 | This case will be ignored until the gcc bug is fixed. */ | |
27aa8d6a SW |
10946 | return; |
10947 | } | |
10948 | ||
82856980 SW |
10949 | /* Figure out the local name after import. */ |
10950 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10951 | |
794684b6 SW |
10952 | /* Figure out where the statement is being imported to. */ |
10953 | import_prefix = determine_prefix (die, cu); | |
10954 | ||
10955 | /* Figure out what the scope of the imported die is and prepend it | |
10956 | to the name of the imported die. */ | |
de4affc9 | 10957 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10958 | |
f55ee35c JK |
10959 | if (imported_die->tag != DW_TAG_namespace |
10960 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10961 | { |
13387711 SW |
10962 | imported_declaration = imported_name; |
10963 | canonical_name = imported_name_prefix; | |
794684b6 | 10964 | } |
13387711 | 10965 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10966 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10967 | imported_name_prefix, |
10968 | (cu->language == language_d ? "." : "::"), | |
10969 | imported_name, (char *) NULL); | |
13387711 SW |
10970 | else |
10971 | canonical_name = imported_name; | |
794684b6 | 10972 | |
32019081 JK |
10973 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10974 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10975 | child_die = child_die->sibling) |
32019081 JK |
10976 | { |
10977 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10978 | represented by an imported module entry with an import attribute | |
10979 | referring to the module and owned entries corresponding to those | |
10980 | entities that are renamed as part of being imported. */ | |
10981 | ||
10982 | if (child_die->tag != DW_TAG_imported_declaration) | |
10983 | { | |
b98664d3 | 10984 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10985 | "- DIE at %s [in module %s]"), |
10986 | sect_offset_str (child_die->sect_off), | |
10987 | objfile_name (objfile)); | |
32019081 JK |
10988 | continue; |
10989 | } | |
10990 | ||
10991 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10992 | if (import_attr == NULL) | |
10993 | { | |
b98664d3 | 10994 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10995 | dwarf_tag_name (child_die->tag)); |
10996 | continue; | |
10997 | } | |
10998 | ||
10999 | imported_cu = cu; | |
11000 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11001 | &imported_cu); | |
11002 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11003 | if (imported_name == NULL) | |
11004 | { | |
b98664d3 | 11005 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11006 | "imported name - DIE at %s [in module %s]"), |
11007 | sect_offset_str (child_die->sect_off), | |
11008 | objfile_name (objfile)); | |
32019081 JK |
11009 | continue; |
11010 | } | |
11011 | ||
eb1e02fd | 11012 | excludes.push_back (imported_name); |
32019081 JK |
11013 | |
11014 | process_die (child_die, cu); | |
11015 | } | |
11016 | ||
804d2729 | 11017 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11018 | import_prefix, |
11019 | canonical_name, | |
11020 | import_alias, | |
11021 | imported_declaration, | |
11022 | excludes, | |
11023 | 0, | |
11024 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11025 | } |
11026 | ||
5230b05a WT |
11027 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11028 | types, but gives them a size of zero. Starting with version 14, | |
11029 | ICC is compatible with GCC. */ | |
11030 | ||
9068261f | 11031 | static bool |
5230b05a WT |
11032 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
11033 | { | |
11034 | if (!cu->checked_producer) | |
11035 | check_producer (cu); | |
11036 | ||
11037 | return cu->producer_is_icc_lt_14; | |
11038 | } | |
11039 | ||
eb77c9df AB |
11040 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
11041 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
11042 | which says that void functions should not have a DW_AT_type. */ | |
11043 | ||
11044 | static bool | |
11045 | producer_is_icc (struct dwarf2_cu *cu) | |
11046 | { | |
11047 | if (!cu->checked_producer) | |
11048 | check_producer (cu); | |
11049 | ||
11050 | return cu->producer_is_icc; | |
11051 | } | |
11052 | ||
1b80a9fa JK |
11053 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11054 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11055 | this, it was first present in GCC release 4.3.0. */ | |
11056 | ||
9068261f | 11057 | static bool |
1b80a9fa JK |
11058 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11059 | { | |
11060 | if (!cu->checked_producer) | |
11061 | check_producer (cu); | |
11062 | ||
11063 | return cu->producer_is_gcc_lt_4_3; | |
11064 | } | |
11065 | ||
d721ba37 PA |
11066 | static file_and_directory |
11067 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11068 | { |
d721ba37 PA |
11069 | file_and_directory res; |
11070 | ||
9291a0cd TT |
11071 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11072 | is not a source language identifier. */ | |
d721ba37 PA |
11073 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11074 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11075 | |
d721ba37 PA |
11076 | if (res.comp_dir == NULL |
11077 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11078 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11079 | { |
d721ba37 PA |
11080 | res.comp_dir_storage = ldirname (res.name); |
11081 | if (!res.comp_dir_storage.empty ()) | |
11082 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11083 | } |
d721ba37 | 11084 | if (res.comp_dir != NULL) |
9291a0cd TT |
11085 | { |
11086 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11087 | directory, get rid of it. */ | |
d721ba37 | 11088 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11089 | |
d721ba37 PA |
11090 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11091 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11092 | } |
11093 | ||
d721ba37 PA |
11094 | if (res.name == NULL) |
11095 | res.name = "<unknown>"; | |
11096 | ||
11097 | return res; | |
9291a0cd TT |
11098 | } |
11099 | ||
f4dc4d17 DE |
11100 | /* Handle DW_AT_stmt_list for a compilation unit. |
11101 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11102 | COMP_DIR is the compilation directory. LOWPC is passed to |
11103 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11104 | |
11105 | static void | |
11106 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11107 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11108 | { |
976ca316 | 11109 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 11110 | struct attribute *attr; |
527f3840 JK |
11111 | struct line_header line_header_local; |
11112 | hashval_t line_header_local_hash; | |
527f3840 JK |
11113 | void **slot; |
11114 | int decode_mapping; | |
2ab95328 | 11115 | |
f4dc4d17 DE |
11116 | gdb_assert (! cu->per_cu->is_debug_types); |
11117 | ||
2ab95328 | 11118 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e | 11119 | if (attr == NULL || !attr->form_is_unsigned ()) |
527f3840 JK |
11120 | return; |
11121 | ||
d4df075e | 11122 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
527f3840 JK |
11123 | |
11124 | /* The line header hash table is only created if needed (it exists to | |
11125 | prevent redundant reading of the line table for partial_units). | |
11126 | If we're given a partial_unit, we'll need it. If we're given a | |
11127 | compile_unit, then use the line header hash table if it's already | |
11128 | created, but don't create one just yet. */ | |
11129 | ||
976ca316 | 11130 | if (per_objfile->line_header_hash == NULL |
527f3840 | 11131 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 11132 | { |
976ca316 | 11133 | per_objfile->line_header_hash |
d15acc42 TT |
11134 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
11135 | line_header_eq_voidp, | |
11136 | free_line_header_voidp, | |
11137 | xcalloc, xfree)); | |
527f3840 | 11138 | } |
2ab95328 | 11139 | |
9c541725 | 11140 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11141 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11142 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 11143 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 11144 | { |
976ca316 | 11145 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11146 | &line_header_local, |
11147 | line_header_local_hash, NO_INSERT); | |
11148 | ||
11149 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11150 | is not present in *SLOT (since if there is something in *SLOT then | |
11151 | it will be for a partial_unit). */ | |
11152 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11153 | { |
527f3840 | 11154 | gdb_assert (*slot != NULL); |
9a3c8263 | 11155 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11156 | return; |
dee91e82 | 11157 | } |
2ab95328 | 11158 | } |
527f3840 JK |
11159 | |
11160 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11161 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11162 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11163 | if (lh == NULL) | |
527f3840 | 11164 | return; |
4c8aa72d PA |
11165 | |
11166 | cu->line_header = lh.release (); | |
11167 | cu->line_header_die_owner = die; | |
527f3840 | 11168 | |
976ca316 | 11169 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
11170 | slot = NULL; |
11171 | else | |
11172 | { | |
976ca316 | 11173 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11174 | &line_header_local, |
11175 | line_header_local_hash, INSERT); | |
11176 | gdb_assert (slot != NULL); | |
11177 | } | |
11178 | if (slot != NULL && *slot == NULL) | |
11179 | { | |
11180 | /* This newly decoded line number information unit will be owned | |
11181 | by line_header_hash hash table. */ | |
11182 | *slot = cu->line_header; | |
4c8aa72d | 11183 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11184 | } |
11185 | else | |
11186 | { | |
11187 | /* We cannot free any current entry in (*slot) as that struct line_header | |
dda83cd7 | 11188 | may be already used by multiple CUs. Create only temporary decoded |
527f3840 JK |
11189 | line_header for this CU - it may happen at most once for each line |
11190 | number information unit. And if we're not using line_header_hash | |
11191 | then this is what we want as well. */ | |
11192 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11193 | } |
11194 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11195 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11196 | decode_mapping); | |
fff8551c | 11197 | |
2ab95328 TT |
11198 | } |
11199 | ||
95554aad | 11200 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11201 | |
c906108c | 11202 | static void |
e7c27a73 | 11203 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11204 | { |
976ca316 SM |
11205 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
11206 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 11207 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 11208 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11209 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11210 | struct attribute *attr; | |
c906108c | 11211 | struct die_info *child_die; |
e142c38c | 11212 | CORE_ADDR baseaddr; |
6e70227d | 11213 | |
380618d6 | 11214 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11215 | baseaddr = objfile->text_section_offset (); |
c906108c | 11216 | |
fae299cd | 11217 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11218 | |
11219 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11220 | from finish_block. */ | |
2acceee2 | 11221 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11222 | lowpc = highpc; |
3e29f34a | 11223 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11224 | |
d721ba37 | 11225 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11226 | |
f4b8a18d KW |
11227 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11228 | standardised yet. As a workaround for the language detection we fall | |
11229 | back to the DW_AT_producer string. */ | |
11230 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11231 | cu->language = language_opencl; | |
11232 | ||
3019eac3 DE |
11233 | /* Similar hack for Go. */ |
11234 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11235 | set_cu_language (DW_LANG_Go, cu); | |
11236 | ||
c24bdb02 | 11237 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11238 | |
11239 | /* Decode line number information if present. We do this before | |
11240 | processing child DIEs, so that the line header table is available | |
11241 | for DW_AT_decl_file. */ | |
d721ba37 | 11242 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11243 | |
11244 | /* Process all dies in compilation unit. */ | |
11245 | if (die->child != NULL) | |
11246 | { | |
11247 | child_die = die->child; | |
11248 | while (child_die && child_die->tag) | |
11249 | { | |
11250 | process_die (child_die, cu); | |
436c571c | 11251 | child_die = child_die->sibling; |
3019eac3 DE |
11252 | } |
11253 | } | |
11254 | ||
11255 | /* Decode macro information, if present. Dwarf 2 macro information | |
11256 | refers to information in the line number info statement program | |
11257 | header, so we can only read it if we've read the header | |
11258 | successfully. */ | |
0af92d60 JK |
11259 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11260 | if (attr == NULL) | |
11261 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
529908cb | 11262 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 DE |
11263 | { |
11264 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11265 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11266 | |
529908cb | 11267 | dwarf_decode_macros (cu, attr->as_unsigned (), 1); |
3019eac3 DE |
11268 | } |
11269 | else | |
11270 | { | |
11271 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
529908cb | 11272 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 | 11273 | { |
529908cb | 11274 | unsigned int macro_offset = attr->as_unsigned (); |
3019eac3 | 11275 | |
43f3e411 | 11276 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11277 | } |
11278 | } | |
3019eac3 DE |
11279 | } |
11280 | ||
c24bdb02 KS |
11281 | void |
11282 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11283 | { |
f4dc4d17 DE |
11284 | struct type_unit_group *tu_group; |
11285 | int first_time; | |
3019eac3 | 11286 | struct attribute *attr; |
9c541725 | 11287 | unsigned int i; |
0186c6a7 | 11288 | struct signatured_type *sig_type; |
3019eac3 | 11289 | |
f4dc4d17 | 11290 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11291 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11292 | |
c24bdb02 | 11293 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11294 | |
f4dc4d17 | 11295 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11296 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11297 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11298 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11299 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11300 | |
11301 | /* If we've already processed this stmt_list there's no real need to | |
11302 | do it again, we could fake it and just recreate the part we need | |
11303 | (file name,index -> symtab mapping). If data shows this optimization | |
11304 | is useful we can do it then. */ | |
8adb8487 TT |
11305 | type_unit_group_unshareable *tug_unshare |
11306 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11307 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11308 | |
11309 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11310 | debug info. */ | |
fff8551c | 11311 | line_header_up lh; |
d4df075e | 11312 | if (attr != NULL && attr->form_is_unsigned ()) |
3019eac3 | 11313 | { |
d4df075e | 11314 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
c24bdb02 | 11315 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11316 | } |
11317 | if (lh == NULL) | |
11318 | { | |
11319 | if (first_time) | |
c24bdb02 | 11320 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11321 | else |
11322 | { | |
8adb8487 | 11323 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11324 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11325 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11326 | m_builder.reset (new struct buildsym_compunit |
11327 | (COMPUNIT_OBJFILE (cust), "", | |
11328 | COMPUNIT_DIRNAME (cust), | |
11329 | compunit_language (cust), | |
11330 | 0, cust)); | |
770479f2 | 11331 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11332 | } |
f4dc4d17 | 11333 | return; |
3019eac3 DE |
11334 | } |
11335 | ||
c24bdb02 KS |
11336 | line_header = lh.release (); |
11337 | line_header_die_owner = die; | |
3019eac3 | 11338 | |
f4dc4d17 DE |
11339 | if (first_time) |
11340 | { | |
c24bdb02 | 11341 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11342 | |
1fd60fc0 DE |
11343 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11344 | still initializing it, and our caller (a few levels up) | |
11345 | process_full_type_unit still needs to know if this is the first | |
11346 | time. */ | |
11347 | ||
8adb8487 | 11348 | tug_unshare->symtabs |
4ac93832 TT |
11349 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11350 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11351 | |
7ba99d21 AT |
11352 | auto &file_names = line_header->file_names (); |
11353 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11354 | { |
7ba99d21 | 11355 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11356 | dwarf2_start_subfile (this, fe.name, |
11357 | fe.include_dir (line_header)); | |
11358 | buildsym_compunit *b = get_builder (); | |
11359 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11360 | { |
4c8aa72d PA |
11361 | /* NOTE: start_subfile will recognize when it's been |
11362 | passed a file it has already seen. So we can't | |
11363 | assume there's a simple mapping from | |
11364 | cu->line_header->file_names to subfiles, plus | |
11365 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11366 | b->get_current_subfile ()->symtab |
11367 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11368 | } |
11369 | ||
c24bdb02 | 11370 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11371 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11372 | } |
11373 | } | |
11374 | else | |
3019eac3 | 11375 | { |
c24bdb02 | 11376 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11377 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11378 | m_builder.reset (new struct buildsym_compunit |
11379 | (COMPUNIT_OBJFILE (cust), "", | |
11380 | COMPUNIT_DIRNAME (cust), | |
11381 | compunit_language (cust), | |
11382 | 0, cust)); | |
770479f2 | 11383 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11384 | |
7ba99d21 AT |
11385 | auto &file_names = line_header->file_names (); |
11386 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11387 | { |
7ba99d21 | 11388 | file_entry &fe = file_names[i]; |
8adb8487 | 11389 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11390 | } |
3019eac3 DE |
11391 | } |
11392 | ||
f4dc4d17 DE |
11393 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11394 | so they don't have a "real" (so to speak) symtab anyway. | |
11395 | There is later code that will assign the main symtab to all symbols | |
11396 | that don't have one. We need to handle the case of a symbol with a | |
11397 | missing symtab (DW_AT_decl_file) anyway. */ | |
11398 | } | |
3019eac3 | 11399 | |
f4dc4d17 DE |
11400 | /* Process DW_TAG_type_unit. |
11401 | For TUs we want to skip the first top level sibling if it's not the | |
11402 | actual type being defined by this TU. In this case the first top | |
11403 | level sibling is there to provide context only. */ | |
3019eac3 | 11404 | |
f4dc4d17 DE |
11405 | static void |
11406 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11407 | { | |
11408 | struct die_info *child_die; | |
3019eac3 | 11409 | |
f4dc4d17 DE |
11410 | prepare_one_comp_unit (cu, die, language_minimal); |
11411 | ||
11412 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11413 | We do this before processing child DIEs, so that the line header table | |
11414 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11415 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11416 | |
11417 | if (die->child != NULL) | |
11418 | { | |
11419 | child_die = die->child; | |
11420 | while (child_die && child_die->tag) | |
11421 | { | |
11422 | process_die (child_die, cu); | |
436c571c | 11423 | child_die = child_die->sibling; |
f4dc4d17 DE |
11424 | } |
11425 | } | |
3019eac3 DE |
11426 | } |
11427 | \f | |
80626a55 DE |
11428 | /* DWO/DWP files. |
11429 | ||
11430 | http://gcc.gnu.org/wiki/DebugFission | |
11431 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11432 | ||
11433 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11434 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11435 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11436 | |
11437 | static hashval_t | |
11438 | hash_dwo_file (const void *item) | |
11439 | { | |
9a3c8263 | 11440 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11441 | hashval_t hash; |
3019eac3 | 11442 | |
a2ce51a0 DE |
11443 | hash = htab_hash_string (dwo_file->dwo_name); |
11444 | if (dwo_file->comp_dir != NULL) | |
11445 | hash += htab_hash_string (dwo_file->comp_dir); | |
11446 | return hash; | |
3019eac3 DE |
11447 | } |
11448 | ||
11449 | static int | |
11450 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11451 | { | |
9a3c8263 SM |
11452 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11453 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11454 | |
a2ce51a0 DE |
11455 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11456 | return 0; | |
11457 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11458 | return lhs->comp_dir == rhs->comp_dir; | |
11459 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11460 | } |
11461 | ||
11462 | /* Allocate a hash table for DWO files. */ | |
11463 | ||
51ac9db5 | 11464 | static htab_up |
298e9637 | 11465 | allocate_dwo_file_hash_table () |
3019eac3 | 11466 | { |
51ac9db5 SM |
11467 | auto delete_dwo_file = [] (void *item) |
11468 | { | |
11469 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11470 | ||
11471 | delete dwo_file; | |
11472 | }; | |
11473 | ||
bc68fb19 TT |
11474 | return htab_up (htab_create_alloc (41, |
11475 | hash_dwo_file, | |
11476 | eq_dwo_file, | |
11477 | delete_dwo_file, | |
11478 | xcalloc, xfree)); | |
3019eac3 DE |
11479 | } |
11480 | ||
80626a55 DE |
11481 | /* Lookup DWO file DWO_NAME. */ |
11482 | ||
11483 | static void ** | |
976ca316 | 11484 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11485 | const char *dwo_name, |
11486 | const char *comp_dir) | |
80626a55 DE |
11487 | { |
11488 | struct dwo_file find_entry; | |
11489 | void **slot; | |
11490 | ||
976ca316 SM |
11491 | if (per_objfile->per_bfd->dwo_files == NULL) |
11492 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11493 | |
0ac5b59e DE |
11494 | find_entry.dwo_name = dwo_name; |
11495 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11496 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11497 | INSERT); |
80626a55 DE |
11498 | |
11499 | return slot; | |
11500 | } | |
11501 | ||
3019eac3 DE |
11502 | static hashval_t |
11503 | hash_dwo_unit (const void *item) | |
11504 | { | |
9a3c8263 | 11505 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11506 | |
11507 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11508 | return dwo_unit->signature; | |
11509 | } | |
11510 | ||
11511 | static int | |
11512 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11513 | { | |
9a3c8263 SM |
11514 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11515 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11516 | |
11517 | /* The signature is assumed to be unique within the DWO file. | |
11518 | So while object file CU dwo_id's always have the value zero, | |
11519 | that's OK, assuming each object file DWO file has only one CU, | |
11520 | and that's the rule for now. */ | |
11521 | return lhs->signature == rhs->signature; | |
11522 | } | |
11523 | ||
11524 | /* Allocate a hash table for DWO CUs,TUs. | |
11525 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11526 | ||
b0b6a987 | 11527 | static htab_up |
298e9637 | 11528 | allocate_dwo_unit_table () |
3019eac3 DE |
11529 | { |
11530 | /* Start out with a pretty small number. | |
11531 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11532 | return htab_up (htab_create_alloc (3, |
11533 | hash_dwo_unit, | |
11534 | eq_dwo_unit, | |
11535 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11536 | } |
11537 | ||
19c3d4c9 | 11538 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11539 | |
11540 | static void | |
19c3d4c9 DE |
11541 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11542 | const gdb_byte *info_ptr, | |
11543 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11544 | struct dwo_file *dwo_file, |
11545 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11546 | { |
11547 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11548 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11549 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11550 | |
a084a2a6 AT |
11551 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11552 | if (!signature.has_value ()) | |
3019eac3 | 11553 | { |
b98664d3 | 11554 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11555 | " its dwo_id [in module %s]"), |
9d8780f0 | 11556 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11557 | return; |
11558 | } | |
11559 | ||
3019eac3 | 11560 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11561 | dwo_unit->signature = *signature; |
8a0459fd | 11562 | dwo_unit->section = section; |
9c541725 | 11563 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11564 | dwo_unit->length = cu->per_cu->length; |
11565 | ||
6f738b01 SM |
11566 | dwarf_read_debug_printf (" offset %s, dwo_id %s", |
11567 | sect_offset_str (sect_off), | |
11568 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
11569 | } |
11570 | ||
33c5cd75 | 11571 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11572 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11573 | |
33c5cd75 | 11574 | static void |
976ca316 | 11575 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11576 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11577 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11578 | { |
976ca316 SM |
11579 | struct objfile *objfile = per_objfile->objfile; |
11580 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11581 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11582 | |
96b79293 | 11583 | section.read (objfile); |
33c5cd75 | 11584 | info_ptr = section.buffer; |
3019eac3 DE |
11585 | |
11586 | if (info_ptr == NULL) | |
33c5cd75 | 11587 | return; |
3019eac3 | 11588 | |
6f738b01 SM |
11589 | dwarf_read_debug_printf ("Reading %s for %s:", |
11590 | section.get_name (), | |
11591 | section.get_file_name ()); | |
3019eac3 | 11592 | |
33c5cd75 | 11593 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11594 | while (info_ptr < end_ptr) |
11595 | { | |
11596 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11597 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11598 | struct dwo_unit *dwo_unit; |
11599 | void **slot; | |
11600 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11601 | |
11602 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11603 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11604 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11605 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11606 | per_cu.section = §ion; | |
11607 | ||
976ca316 | 11608 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11609 | if (!reader.dummy_p) |
11610 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11611 | &dwo_file, &read_unit); |
33c5cd75 DB |
11612 | info_ptr += per_cu.length; |
11613 | ||
11614 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11615 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11616 | continue; |
3019eac3 | 11617 | |
33c5cd75 | 11618 | if (cus_htab == NULL) |
298e9637 | 11619 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11620 | |
1859c670 | 11621 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11622 | struct dwo_unit); |
c0ab21c2 | 11623 | *dwo_unit = read_unit; |
b0b6a987 | 11624 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11625 | gdb_assert (slot != NULL); |
11626 | if (*slot != NULL) | |
19c3d4c9 | 11627 | { |
33c5cd75 DB |
11628 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11629 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11630 | |
b98664d3 | 11631 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11632 | " the entry at offset %s, signature %s"), |
11633 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11634 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11635 | } |
33c5cd75 | 11636 | *slot = (void *)dwo_unit; |
3019eac3 | 11637 | } |
3019eac3 DE |
11638 | } |
11639 | ||
80626a55 DE |
11640 | /* DWP file .debug_{cu,tu}_index section format: |
11641 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
d2854d8d CT |
11642 | [ref: http://dwarfstd.org/doc/DWARF5.pdf, sect 7.3.5 "DWARF Package Files"] |
11643 | ||
11644 | DWP Versions 1 & 2 are older, pre-standard format versions. The first | |
11645 | officially standard DWP format was published with DWARF v5 and is called | |
11646 | Version 5. There are no versions 3 or 4. | |
80626a55 | 11647 | |
d2415c6c DE |
11648 | DWP Version 1: |
11649 | ||
80626a55 DE |
11650 | Both index sections have the same format, and serve to map a 64-bit |
11651 | signature to a set of section numbers. Each section begins with a header, | |
11652 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11653 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11654 | aligned at 8-byte boundaries in the file. | |
11655 | ||
d2415c6c DE |
11656 | The index section header consists of: |
11657 | ||
11658 | V, 32 bit version number | |
11659 | -, 32 bits unused | |
11660 | N, 32 bit number of compilation units or type units in the index | |
11661 | M, 32 bit number of slots in the hash table | |
80626a55 | 11662 | |
d2415c6c | 11663 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11664 | |
d2415c6c DE |
11665 | The hash table begins at offset 16 in the section, and consists of an array |
11666 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11667 | order of the application binary). Unused slots in the hash table are 0. | |
11668 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11669 | |
d2415c6c DE |
11670 | The parallel table begins immediately after the hash table |
11671 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11672 | array of 32-bit indexes (using the byte order of the application binary), | |
11673 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11674 | table contains a 32-bit index into the pool of section numbers. For unused | |
11675 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11676 | |
73869dc2 DE |
11677 | The pool of section numbers begins immediately following the hash table |
11678 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11679 | section numbers consists of an array of 32-bit words (using the byte order | |
11680 | of the application binary). Each item in the array is indexed starting | |
11681 | from 0. The hash table entry provides the index of the first section | |
11682 | number in the set. Additional section numbers in the set follow, and the | |
11683 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11684 | ||
11685 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11686 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11687 | be the second entry. Other members of the set may follow in any order. | |
11688 | ||
11689 | --- | |
11690 | ||
d2854d8d | 11691 | DWP Versions 2 and 5: |
73869dc2 | 11692 | |
d2854d8d | 11693 | DWP Versions 2 and 5 combine all the .debug_info, etc. sections into one, |
73869dc2 DE |
11694 | and the entries in the index tables are now offsets into these sections. |
11695 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11696 | section. | |
11697 | ||
11698 | Index Section Contents: | |
11699 | Header | |
11700 | Hash Table of Signatures dwp_hash_table.hash_table | |
11701 | Parallel Table of Indices dwp_hash_table.unit_table | |
d2854d8d CT |
11702 | Table of Section Offsets dwp_hash_table.{v2|v5}.{section_ids,offsets} |
11703 | Table of Section Sizes dwp_hash_table.{v2|v5}.sizes | |
73869dc2 DE |
11704 | |
11705 | The index section header consists of: | |
11706 | ||
11707 | V, 32 bit version number | |
11708 | L, 32 bit number of columns in the table of section offsets | |
11709 | N, 32 bit number of compilation units or type units in the index | |
11710 | M, 32 bit number of slots in the hash table | |
11711 | ||
11712 | Numbers are recorded using the byte order of the application binary. | |
11713 | ||
11714 | The hash table has the same format as version 1. | |
11715 | The parallel table of indices has the same format as version 1, | |
11716 | except that the entries are origin-1 indices into the table of sections | |
11717 | offsets and the table of section sizes. | |
11718 | ||
11719 | The table of offsets begins immediately following the parallel table | |
11720 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11721 | a two-dimensional array of 32-bit words (using the byte order of the | |
11722 | application binary), with L columns and N+1 rows, in row-major order. | |
11723 | Each row in the array is indexed starting from 0. The first row provides | |
11724 | a key to the remaining rows: each column in this row provides an identifier | |
11725 | for a debug section, and the offsets in the same column of subsequent rows | |
d2854d8d | 11726 | refer to that section. The section identifiers for Version 2 are: |
73869dc2 DE |
11727 | |
11728 | DW_SECT_INFO 1 .debug_info.dwo | |
11729 | DW_SECT_TYPES 2 .debug_types.dwo | |
11730 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11731 | DW_SECT_LINE 4 .debug_line.dwo | |
11732 | DW_SECT_LOC 5 .debug_loc.dwo | |
11733 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11734 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11735 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11736 | ||
d2854d8d CT |
11737 | The section identifiers for Version 5 are: |
11738 | ||
11739 | DW_SECT_INFO_V5 1 .debug_info.dwo | |
11740 | DW_SECT_RESERVED_V5 2 -- | |
11741 | DW_SECT_ABBREV_V5 3 .debug_abbrev.dwo | |
11742 | DW_SECT_LINE_V5 4 .debug_line.dwo | |
11743 | DW_SECT_LOCLISTS_V5 5 .debug_loclists.dwo | |
11744 | DW_SECT_STR_OFFSETS_V5 6 .debug_str_offsets.dwo | |
11745 | DW_SECT_MACRO_V5 7 .debug_macro.dwo | |
11746 | DW_SECT_RNGLISTS_V5 8 .debug_rnglists.dwo | |
11747 | ||
73869dc2 DE |
11748 | The offsets provided by the CU and TU index sections are the base offsets |
11749 | for the contributions made by each CU or TU to the corresponding section | |
11750 | in the package file. Each CU and TU header contains an abbrev_offset | |
11751 | field, used to find the abbreviations table for that CU or TU within the | |
11752 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11753 | be interpreted as relative to the base offset given in the index section. | |
11754 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11755 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11756 | and offsets into other debug sections obtained from DWARF attributes should | |
11757 | also be interpreted as relative to the corresponding base offset. | |
11758 | ||
11759 | The table of sizes begins immediately following the table of offsets. | |
11760 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11761 | with L columns and N rows, in row-major order. Each row in the array is | |
11762 | indexed starting from 1 (row 0 is shared by the two tables). | |
11763 | ||
11764 | --- | |
11765 | ||
11766 | Hash table lookup is handled the same in version 1 and 2: | |
11767 | ||
11768 | We assume that N and M will not exceed 2^32 - 1. | |
11769 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11770 | ||
d2415c6c DE |
11771 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11772 | in the hash table is located as follows: | |
80626a55 | 11773 | |
d2415c6c DE |
11774 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11775 | the low-order k bits all set to 1. | |
80626a55 | 11776 | |
d2415c6c | 11777 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11778 | |
d2415c6c DE |
11779 | 3) If the hash table entry at index H matches the signature, use that |
11780 | entry. If the hash table entry at index H is unused (all zeroes), | |
11781 | terminate the search: the signature is not present in the table. | |
80626a55 | 11782 | |
d2415c6c | 11783 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11784 | |
d2415c6c | 11785 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11786 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11787 | |
11788 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11789 | .debug_{info,types}.dwo in DWP_FILE. | |
11790 | Returns NULL if there isn't one. | |
11791 | Note: This function processes DWP files only, not DWO files. */ | |
11792 | ||
11793 | static struct dwp_hash_table * | |
976ca316 | 11794 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11795 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11796 | { |
976ca316 | 11797 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11798 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11799 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11800 | struct dwarf2_section_info *index; |
73869dc2 | 11801 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11802 | struct dwp_hash_table *htab; |
11803 | ||
11804 | if (is_debug_types) | |
11805 | index = &dwp_file->sections.tu_index; | |
11806 | else | |
11807 | index = &dwp_file->sections.cu_index; | |
11808 | ||
96b79293 | 11809 | if (index->empty ()) |
80626a55 | 11810 | return NULL; |
96b79293 | 11811 | index->read (objfile); |
80626a55 DE |
11812 | |
11813 | index_ptr = index->buffer; | |
11814 | index_end = index_ptr + index->size; | |
11815 | ||
d2854d8d CT |
11816 | /* For Version 5, the version is really 2 bytes of data & 2 bytes of padding. |
11817 | For now it's safe to just read 4 bytes (particularly as it's difficult to | |
11818 | tell if you're dealing with Version 5 before you've read the version). */ | |
80626a55 | 11819 | version = read_4_bytes (dbfd, index_ptr); |
73869dc2 | 11820 | index_ptr += 4; |
d2854d8d | 11821 | if (version == 2 || version == 5) |
73869dc2 DE |
11822 | nr_columns = read_4_bytes (dbfd, index_ptr); |
11823 | else | |
11824 | nr_columns = 0; | |
11825 | index_ptr += 4; | |
80626a55 DE |
11826 | nr_units = read_4_bytes (dbfd, index_ptr); |
11827 | index_ptr += 4; | |
11828 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11829 | index_ptr += 4; | |
11830 | ||
d2854d8d | 11831 | if (version != 1 && version != 2 && version != 5) |
80626a55 | 11832 | { |
21aa081e | 11833 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11834 | " [in module %s]"), |
21aa081e | 11835 | pulongest (version), dwp_file->name); |
80626a55 DE |
11836 | } |
11837 | if (nr_slots != (nr_slots & -nr_slots)) | |
11838 | { | |
21aa081e | 11839 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11840 | " is not power of 2 [in module %s]"), |
21aa081e | 11841 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11842 | } |
11843 | ||
976ca316 | 11844 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11845 | htab->version = version; |
11846 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11847 | htab->nr_units = nr_units; |
11848 | htab->nr_slots = nr_slots; | |
11849 | htab->hash_table = index_ptr; | |
11850 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11851 | |
11852 | /* Exit early if the table is empty. */ | |
11853 | if (nr_slots == 0 || nr_units == 0 | |
d2854d8d CT |
11854 | || (version == 2 && nr_columns == 0) |
11855 | || (version == 5 && nr_columns == 0)) | |
73869dc2 DE |
11856 | { |
11857 | /* All must be zero. */ | |
11858 | if (nr_slots != 0 || nr_units != 0 | |
d2854d8d CT |
11859 | || (version == 2 && nr_columns != 0) |
11860 | || (version == 5 && nr_columns != 0)) | |
73869dc2 | 11861 | { |
b98664d3 | 11862 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11863 | " all zero [in modules %s]"), |
11864 | dwp_file->name); | |
11865 | } | |
11866 | return htab; | |
11867 | } | |
11868 | ||
11869 | if (version == 1) | |
11870 | { | |
11871 | htab->section_pool.v1.indices = | |
11872 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11873 | /* It's harder to decide whether the section is too small in v1. | |
11874 | V1 is deprecated anyway so we punt. */ | |
11875 | } | |
d2854d8d | 11876 | else if (version == 2) |
73869dc2 DE |
11877 | { |
11878 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11879 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11880 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11881 | /* Reverse map for error checking. */ |
11882 | int ids_seen[DW_SECT_MAX + 1]; | |
11883 | int i; | |
11884 | ||
11885 | if (nr_columns < 2) | |
11886 | { | |
11887 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11888 | " in section table [in module %s]"), | |
11889 | dwp_file->name); | |
11890 | } | |
11891 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11892 | { | |
11893 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11894 | " in section table [in module %s]"), | |
11895 | dwp_file->name); | |
11896 | } | |
04fd5eed GB |
11897 | memset (ids, 255, sizeof_ids); |
11898 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11899 | for (i = 0; i < nr_columns; ++i) |
11900 | { | |
11901 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11902 | ||
11903 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11904 | { | |
11905 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11906 | " in section table [in module %s]"), | |
11907 | id, dwp_file->name); | |
11908 | } | |
11909 | if (ids_seen[id] != -1) | |
11910 | { | |
11911 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11912 | " id %d in section table [in module %s]"), | |
11913 | id, dwp_file->name); | |
11914 | } | |
11915 | ids_seen[id] = i; | |
11916 | ids[i] = id; | |
11917 | } | |
11918 | /* Must have exactly one info or types section. */ | |
11919 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11920 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11921 | != 1) | |
11922 | { | |
11923 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11924 | " DWO info/types section [in module %s]"), | |
11925 | dwp_file->name); | |
11926 | } | |
11927 | /* Must have an abbrev section. */ | |
11928 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11929 | { | |
11930 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11931 | " section [in module %s]"), | |
11932 | dwp_file->name); | |
11933 | } | |
11934 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11935 | htab->section_pool.v2.sizes = | |
11936 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11937 | * nr_units * nr_columns); | |
11938 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11939 | * nr_units * nr_columns)) | |
11940 | > index_end) | |
11941 | { | |
11942 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11943 | " [in module %s]"), | |
11944 | dwp_file->name); | |
11945 | } | |
11946 | } | |
d2854d8d CT |
11947 | else /* version == 5 */ |
11948 | { | |
11949 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11950 | int *ids = htab->section_pool.v5.section_ids; | |
11951 | size_t sizeof_ids = sizeof (htab->section_pool.v5.section_ids); | |
11952 | /* Reverse map for error checking. */ | |
11953 | int ids_seen[DW_SECT_MAX_V5 + 1]; | |
11954 | ||
11955 | if (nr_columns < 2) | |
11956 | { | |
11957 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11958 | " in section table [in module %s]"), | |
11959 | dwp_file->name); | |
11960 | } | |
11961 | if (nr_columns > MAX_NR_V5_DWO_SECTIONS) | |
11962 | { | |
11963 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11964 | " in section table [in module %s]"), | |
11965 | dwp_file->name); | |
11966 | } | |
11967 | memset (ids, 255, sizeof_ids); | |
11968 | memset (ids_seen, 255, sizeof (ids_seen)); | |
11969 | for (int i = 0; i < nr_columns; ++i) | |
11970 | { | |
11971 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11972 | ||
11973 | if (id < DW_SECT_MIN || id > DW_SECT_MAX_V5) | |
11974 | { | |
11975 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11976 | " in section table [in module %s]"), | |
11977 | id, dwp_file->name); | |
11978 | } | |
11979 | if (ids_seen[id] != -1) | |
11980 | { | |
11981 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11982 | " id %d in section table [in module %s]"), | |
11983 | id, dwp_file->name); | |
11984 | } | |
11985 | ids_seen[id] = i; | |
11986 | ids[i] = id; | |
11987 | } | |
11988 | /* Must have seen an info section. */ | |
11989 | if (ids_seen[DW_SECT_INFO_V5] == -1) | |
11990 | { | |
11991 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11992 | " DWO info/types section [in module %s]"), | |
11993 | dwp_file->name); | |
11994 | } | |
11995 | /* Must have an abbrev section. */ | |
11996 | if (ids_seen[DW_SECT_ABBREV_V5] == -1) | |
11997 | { | |
11998 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11999 | " section [in module %s]"), | |
12000 | dwp_file->name); | |
12001 | } | |
12002 | htab->section_pool.v5.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12003 | htab->section_pool.v5.sizes | |
12004 | = htab->section_pool.v5.offsets + (sizeof (uint32_t) | |
12005 | * nr_units * nr_columns); | |
12006 | if ((htab->section_pool.v5.sizes + (sizeof (uint32_t) | |
12007 | * nr_units * nr_columns)) | |
12008 | > index_end) | |
12009 | { | |
12010 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12011 | " [in module %s]"), | |
12012 | dwp_file->name); | |
12013 | } | |
12014 | } | |
80626a55 DE |
12015 | |
12016 | return htab; | |
12017 | } | |
12018 | ||
12019 | /* Update SECTIONS with the data from SECTP. | |
12020 | ||
5bb6e9dd TT |
12021 | This function is like the other "locate" section routines, but in |
12022 | this context the sections to read comes from the DWP V1 hash table, | |
12023 | not the full ELF section table. | |
80626a55 DE |
12024 | |
12025 | The result is non-zero for success, or zero if an error was found. */ | |
12026 | ||
12027 | static int | |
73869dc2 DE |
12028 | locate_v1_virtual_dwo_sections (asection *sectp, |
12029 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12030 | { |
12031 | const struct dwop_section_names *names = &dwop_section_names; | |
12032 | ||
12033 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12034 | { | |
12035 | /* There can be only one. */ | |
049412e3 | 12036 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12037 | return 0; |
049412e3 | 12038 | sections->abbrev.s.section = sectp; |
fd361982 | 12039 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12040 | } |
12041 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12042 | || section_is_p (sectp->name, &names->types_dwo)) | |
12043 | { | |
12044 | /* There can be only one. */ | |
049412e3 | 12045 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12046 | return 0; |
049412e3 | 12047 | sections->info_or_types.s.section = sectp; |
fd361982 | 12048 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
12049 | } |
12050 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12051 | { | |
12052 | /* There can be only one. */ | |
049412e3 | 12053 | if (sections->line.s.section != NULL) |
80626a55 | 12054 | return 0; |
049412e3 | 12055 | sections->line.s.section = sectp; |
fd361982 | 12056 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12057 | } |
12058 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12059 | { | |
12060 | /* There can be only one. */ | |
049412e3 | 12061 | if (sections->loc.s.section != NULL) |
80626a55 | 12062 | return 0; |
049412e3 | 12063 | sections->loc.s.section = sectp; |
fd361982 | 12064 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12065 | } |
12066 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12067 | { | |
12068 | /* There can be only one. */ | |
049412e3 | 12069 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12070 | return 0; |
049412e3 | 12071 | sections->macinfo.s.section = sectp; |
fd361982 | 12072 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12073 | } |
12074 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12075 | { | |
12076 | /* There can be only one. */ | |
049412e3 | 12077 | if (sections->macro.s.section != NULL) |
80626a55 | 12078 | return 0; |
049412e3 | 12079 | sections->macro.s.section = sectp; |
fd361982 | 12080 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12081 | } |
12082 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12083 | { | |
12084 | /* There can be only one. */ | |
049412e3 | 12085 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12086 | return 0; |
049412e3 | 12087 | sections->str_offsets.s.section = sectp; |
fd361982 | 12088 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12089 | } |
12090 | else | |
12091 | { | |
12092 | /* No other kind of section is valid. */ | |
12093 | return 0; | |
12094 | } | |
12095 | ||
12096 | return 1; | |
12097 | } | |
12098 | ||
73869dc2 DE |
12099 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12100 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12101 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12102 | This is for DWP version 1 files. */ | |
80626a55 DE |
12103 | |
12104 | static struct dwo_unit * | |
976ca316 | 12105 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12106 | struct dwp_file *dwp_file, |
73869dc2 DE |
12107 | uint32_t unit_index, |
12108 | const char *comp_dir, | |
12109 | ULONGEST signature, int is_debug_types) | |
80626a55 | 12110 | { |
73869dc2 DE |
12111 | const struct dwp_hash_table *dwp_htab = |
12112 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12113 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12114 | const char *kind = is_debug_types ? "TU" : "CU"; |
12115 | struct dwo_file *dwo_file; | |
12116 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12117 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12118 | void **dwo_file_slot; |
80626a55 DE |
12119 | int i; |
12120 | ||
73869dc2 DE |
12121 | gdb_assert (dwp_file->version == 1); |
12122 | ||
6f738b01 SM |
12123 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V1 file: %s", |
12124 | kind, pulongest (unit_index), hex_string (signature), | |
12125 | dwp_file->name); | |
80626a55 | 12126 | |
19ac8c2e | 12127 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12128 | Put a limit on the number of sections we look for so that bad data |
12129 | doesn't cause us to loop forever. */ | |
12130 | ||
73869dc2 | 12131 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12132 | (1 /* .debug_info or .debug_types */ \ |
12133 | + 1 /* .debug_abbrev */ \ | |
12134 | + 1 /* .debug_line */ \ | |
12135 | + 1 /* .debug_loc */ \ | |
12136 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12137 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12138 | + 1 /* trailing zero */) |
12139 | ||
12140 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12141 | |
73869dc2 | 12142 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12143 | { |
12144 | asection *sectp; | |
12145 | uint32_t section_nr = | |
12146 | read_4_bytes (dbfd, | |
73869dc2 DE |
12147 | dwp_htab->section_pool.v1.indices |
12148 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12149 | |
12150 | if (section_nr == 0) | |
12151 | break; | |
12152 | if (section_nr >= dwp_file->num_sections) | |
12153 | { | |
12154 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12155 | " [in module %s]"), | |
12156 | dwp_file->name); | |
12157 | } | |
12158 | ||
12159 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12160 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12161 | { |
12162 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12163 | " [in module %s]"), | |
12164 | dwp_file->name); | |
12165 | } | |
12166 | } | |
12167 | ||
12168 | if (i < 2 | |
96b79293 TT |
12169 | || sections.info_or_types.empty () |
12170 | || sections.abbrev.empty ()) | |
80626a55 DE |
12171 | { |
12172 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12173 | " [in module %s]"), | |
12174 | dwp_file->name); | |
12175 | } | |
73869dc2 | 12176 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12177 | { |
12178 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12179 | " [in module %s]"), | |
12180 | dwp_file->name); | |
12181 | } | |
12182 | ||
12183 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12184 | have dwo_unit "live" in that. At least for now. | |
12185 | ||
12186 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12187 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12188 | file, we can combine them back into a virtual DWO file to save space |
12189 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12190 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12191 | ||
791afaa2 TT |
12192 | std::string virtual_dwo_name = |
12193 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
12194 | sections.abbrev.get_id (), |
12195 | sections.line.get_id (), | |
12196 | sections.loc.get_id (), | |
12197 | sections.str_offsets.get_id ()); | |
80626a55 | 12198 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12199 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12200 | comp_dir); |
80626a55 DE |
12201 | /* Create one if necessary. */ |
12202 | if (*dwo_file_slot == NULL) | |
12203 | { | |
6f738b01 SM |
12204 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12205 | virtual_dwo_name.c_str ()); | |
12206 | ||
51ac9db5 | 12207 | dwo_file = new struct dwo_file; |
976ca316 | 12208 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 12209 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12210 | dwo_file->sections.abbrev = sections.abbrev; |
12211 | dwo_file->sections.line = sections.line; | |
12212 | dwo_file->sections.loc = sections.loc; | |
12213 | dwo_file->sections.macinfo = sections.macinfo; | |
12214 | dwo_file->sections.macro = sections.macro; | |
12215 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12216 | /* The "str" section is global to the entire DWP file. */ | |
12217 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12218 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12219 | there's no need to record it in dwo_file. |
12220 | Also, we can't simply record type sections in dwo_file because | |
12221 | we record a pointer into the vector in dwo_unit. As we collect more | |
12222 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12223 | for it, invalidating all copies of pointers into the previous |
12224 | contents. */ | |
80626a55 DE |
12225 | *dwo_file_slot = dwo_file; |
12226 | } | |
12227 | else | |
12228 | { | |
6f738b01 SM |
12229 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12230 | virtual_dwo_name.c_str ()); | |
12231 | ||
9a3c8263 | 12232 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12233 | } |
80626a55 | 12234 | |
976ca316 | 12235 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
12236 | dwo_unit->dwo_file = dwo_file; |
12237 | dwo_unit->signature = signature; | |
8d749320 | 12238 | dwo_unit->section = |
976ca316 | 12239 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 12240 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12241 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12242 | |
12243 | return dwo_unit; | |
12244 | } | |
12245 | ||
d2854d8d CT |
12246 | /* Subroutine of create_dwo_unit_in_dwp_v2 and create_dwo_unit_in_dwp_v5 to |
12247 | simplify them. Given a pointer to the containing section SECTION, and | |
12248 | OFFSET,SIZE of the piece within that section used by a TU/CU, return a | |
12249 | virtual section of just that piece. */ | |
73869dc2 DE |
12250 | |
12251 | static struct dwarf2_section_info | |
d2854d8d CT |
12252 | create_dwp_v2_or_v5_section (dwarf2_per_objfile *per_objfile, |
12253 | struct dwarf2_section_info *section, | |
12254 | bfd_size_type offset, bfd_size_type size) | |
73869dc2 DE |
12255 | { |
12256 | struct dwarf2_section_info result; | |
12257 | asection *sectp; | |
12258 | ||
12259 | gdb_assert (section != NULL); | |
12260 | gdb_assert (!section->is_virtual); | |
12261 | ||
12262 | memset (&result, 0, sizeof (result)); | |
12263 | result.s.containing_section = section; | |
dc4ccb6f | 12264 | result.is_virtual = true; |
73869dc2 DE |
12265 | |
12266 | if (size == 0) | |
12267 | return result; | |
12268 | ||
96b79293 | 12269 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12270 | |
12271 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12272 | bounds of the real section. This is a pretty-rare event, so just | |
12273 | flag an error (easier) instead of a warning and trying to cope. */ | |
12274 | if (sectp == NULL | |
fd361982 | 12275 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12276 | { |
d2854d8d | 12277 | error (_("Dwarf Error: Bad DWP V2 or V5 section info, doesn't fit" |
73869dc2 | 12278 | " in section %s [in module %s]"), |
fd361982 | 12279 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 12280 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
12281 | } |
12282 | ||
12283 | result.virtual_offset = offset; | |
12284 | result.size = size; | |
12285 | return result; | |
12286 | } | |
12287 | ||
12288 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12289 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12290 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12291 | This is for DWP version 2 files. */ | |
12292 | ||
12293 | static struct dwo_unit * | |
976ca316 | 12294 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12295 | struct dwp_file *dwp_file, |
73869dc2 DE |
12296 | uint32_t unit_index, |
12297 | const char *comp_dir, | |
12298 | ULONGEST signature, int is_debug_types) | |
12299 | { | |
73869dc2 DE |
12300 | const struct dwp_hash_table *dwp_htab = |
12301 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12302 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12303 | const char *kind = is_debug_types ? "TU" : "CU"; |
12304 | struct dwo_file *dwo_file; | |
12305 | struct dwo_unit *dwo_unit; | |
d2854d8d | 12306 | struct virtual_v2_or_v5_dwo_sections sections; |
73869dc2 | 12307 | void **dwo_file_slot; |
73869dc2 DE |
12308 | int i; |
12309 | ||
12310 | gdb_assert (dwp_file->version == 2); | |
12311 | ||
6f738b01 SM |
12312 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V2 file: %s", |
12313 | kind, pulongest (unit_index), hex_string (signature), | |
12314 | dwp_file->name); | |
73869dc2 DE |
12315 | |
12316 | /* Fetch the section offsets of this DWO unit. */ | |
12317 | ||
12318 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12319 | |
12320 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12321 | { | |
12322 | uint32_t offset = read_4_bytes (dbfd, | |
12323 | dwp_htab->section_pool.v2.offsets | |
12324 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12325 | + i) | |
12326 | * sizeof (uint32_t))); | |
12327 | uint32_t size = read_4_bytes (dbfd, | |
12328 | dwp_htab->section_pool.v2.sizes | |
12329 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12330 | + i) | |
12331 | * sizeof (uint32_t))); | |
12332 | ||
12333 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12334 | { | |
12335 | case DW_SECT_INFO: | |
12336 | case DW_SECT_TYPES: | |
12337 | sections.info_or_types_offset = offset; | |
12338 | sections.info_or_types_size = size; | |
12339 | break; | |
12340 | case DW_SECT_ABBREV: | |
12341 | sections.abbrev_offset = offset; | |
12342 | sections.abbrev_size = size; | |
12343 | break; | |
12344 | case DW_SECT_LINE: | |
12345 | sections.line_offset = offset; | |
12346 | sections.line_size = size; | |
12347 | break; | |
12348 | case DW_SECT_LOC: | |
12349 | sections.loc_offset = offset; | |
12350 | sections.loc_size = size; | |
12351 | break; | |
12352 | case DW_SECT_STR_OFFSETS: | |
12353 | sections.str_offsets_offset = offset; | |
12354 | sections.str_offsets_size = size; | |
12355 | break; | |
12356 | case DW_SECT_MACINFO: | |
12357 | sections.macinfo_offset = offset; | |
12358 | sections.macinfo_size = size; | |
12359 | break; | |
12360 | case DW_SECT_MACRO: | |
12361 | sections.macro_offset = offset; | |
12362 | sections.macro_size = size; | |
12363 | break; | |
12364 | } | |
12365 | } | |
12366 | ||
12367 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12368 | have dwo_unit "live" in that. At least for now. | |
12369 | ||
12370 | The DWP file can be made up of a random collection of CUs and TUs. | |
12371 | However, for each CU + set of TUs that came from the same original DWO | |
12372 | file, we can combine them back into a virtual DWO file to save space | |
12373 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12374 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12375 | ||
791afaa2 TT |
12376 | std::string virtual_dwo_name = |
12377 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12378 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12379 | (long) (sections.line_size ? sections.line_offset : 0), | |
12380 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12381 | (long) (sections.str_offsets_size | |
12382 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12383 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12384 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12385 | comp_dir); |
73869dc2 DE |
12386 | /* Create one if necessary. */ |
12387 | if (*dwo_file_slot == NULL) | |
12388 | { | |
6f738b01 SM |
12389 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12390 | virtual_dwo_name.c_str ()); | |
12391 | ||
51ac9db5 | 12392 | dwo_file = new struct dwo_file; |
976ca316 | 12393 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12394 | dwo_file->comp_dir = comp_dir; |
12395 | dwo_file->sections.abbrev = | |
d2854d8d CT |
12396 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.abbrev, |
12397 | sections.abbrev_offset, | |
12398 | sections.abbrev_size); | |
73869dc2 | 12399 | dwo_file->sections.line = |
d2854d8d CT |
12400 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.line, |
12401 | sections.line_offset, | |
12402 | sections.line_size); | |
73869dc2 | 12403 | dwo_file->sections.loc = |
d2854d8d CT |
12404 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.loc, |
12405 | sections.loc_offset, sections.loc_size); | |
73869dc2 | 12406 | dwo_file->sections.macinfo = |
d2854d8d CT |
12407 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macinfo, |
12408 | sections.macinfo_offset, | |
12409 | sections.macinfo_size); | |
73869dc2 | 12410 | dwo_file->sections.macro = |
d2854d8d CT |
12411 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macro, |
12412 | sections.macro_offset, | |
12413 | sections.macro_size); | |
73869dc2 | 12414 | dwo_file->sections.str_offsets = |
d2854d8d CT |
12415 | create_dwp_v2_or_v5_section (per_objfile, |
12416 | &dwp_file->sections.str_offsets, | |
12417 | sections.str_offsets_offset, | |
12418 | sections.str_offsets_size); | |
73869dc2 DE |
12419 | /* The "str" section is global to the entire DWP file. */ |
12420 | dwo_file->sections.str = dwp_file->sections.str; | |
12421 | /* The info or types section is assigned below to dwo_unit, | |
12422 | there's no need to record it in dwo_file. | |
12423 | Also, we can't simply record type sections in dwo_file because | |
12424 | we record a pointer into the vector in dwo_unit. As we collect more | |
12425 | types we'll grow the vector and eventually have to reallocate space | |
12426 | for it, invalidating all copies of pointers into the previous | |
12427 | contents. */ | |
12428 | *dwo_file_slot = dwo_file; | |
12429 | } | |
12430 | else | |
12431 | { | |
6f738b01 SM |
12432 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12433 | virtual_dwo_name.c_str ()); | |
12434 | ||
9a3c8263 | 12435 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12436 | } |
73869dc2 | 12437 | |
976ca316 | 12438 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12439 | dwo_unit->dwo_file = dwo_file; |
12440 | dwo_unit->signature = signature; | |
8d749320 | 12441 | dwo_unit->section = |
976ca316 | 12442 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
d2854d8d | 12443 | *dwo_unit->section = create_dwp_v2_or_v5_section |
dda83cd7 | 12444 | (per_objfile, |
d2854d8d CT |
12445 | is_debug_types |
12446 | ? &dwp_file->sections.types | |
12447 | : &dwp_file->sections.info, | |
12448 | sections.info_or_types_offset, | |
12449 | sections.info_or_types_size); | |
12450 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12451 | ||
12452 | return dwo_unit; | |
12453 | } | |
12454 | ||
12455 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12456 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12457 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12458 | This is for DWP version 5 files. */ | |
12459 | ||
12460 | static struct dwo_unit * | |
12461 | create_dwo_unit_in_dwp_v5 (dwarf2_per_objfile *per_objfile, | |
12462 | struct dwp_file *dwp_file, | |
12463 | uint32_t unit_index, | |
12464 | const char *comp_dir, | |
12465 | ULONGEST signature, int is_debug_types) | |
12466 | { | |
12467 | const struct dwp_hash_table *dwp_htab | |
12468 | = is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12469 | bfd *dbfd = dwp_file->dbfd.get (); | |
12470 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12471 | struct dwo_file *dwo_file; | |
12472 | struct dwo_unit *dwo_unit; | |
12473 | struct virtual_v2_or_v5_dwo_sections sections {}; | |
12474 | void **dwo_file_slot; | |
12475 | ||
12476 | gdb_assert (dwp_file->version == 5); | |
12477 | ||
6f738b01 SM |
12478 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V5 file: %s", |
12479 | kind, pulongest (unit_index), hex_string (signature), | |
12480 | dwp_file->name); | |
d2854d8d CT |
12481 | |
12482 | /* Fetch the section offsets of this DWO unit. */ | |
12483 | ||
12484 | /* memset (§ions, 0, sizeof (sections)); */ | |
12485 | ||
12486 | for (int i = 0; i < dwp_htab->nr_columns; ++i) | |
12487 | { | |
12488 | uint32_t offset = read_4_bytes (dbfd, | |
dda83cd7 SM |
12489 | dwp_htab->section_pool.v5.offsets |
12490 | + (((unit_index - 1) | |
12491 | * dwp_htab->nr_columns | |
12492 | + i) | |
12493 | * sizeof (uint32_t))); | |
d2854d8d | 12494 | uint32_t size = read_4_bytes (dbfd, |
dda83cd7 SM |
12495 | dwp_htab->section_pool.v5.sizes |
12496 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12497 | + i) | |
12498 | * sizeof (uint32_t))); | |
d2854d8d CT |
12499 | |
12500 | switch (dwp_htab->section_pool.v5.section_ids[i]) | |
dda83cd7 SM |
12501 | { |
12502 | case DW_SECT_ABBREV_V5: | |
12503 | sections.abbrev_offset = offset; | |
12504 | sections.abbrev_size = size; | |
12505 | break; | |
12506 | case DW_SECT_INFO_V5: | |
12507 | sections.info_or_types_offset = offset; | |
12508 | sections.info_or_types_size = size; | |
12509 | break; | |
12510 | case DW_SECT_LINE_V5: | |
12511 | sections.line_offset = offset; | |
12512 | sections.line_size = size; | |
12513 | break; | |
12514 | case DW_SECT_LOCLISTS_V5: | |
12515 | sections.loclists_offset = offset; | |
12516 | sections.loclists_size = size; | |
12517 | break; | |
12518 | case DW_SECT_MACRO_V5: | |
12519 | sections.macro_offset = offset; | |
12520 | sections.macro_size = size; | |
12521 | break; | |
12522 | case DW_SECT_RNGLISTS_V5: | |
12523 | sections.rnglists_offset = offset; | |
12524 | sections.rnglists_size = size; | |
12525 | break; | |
12526 | case DW_SECT_STR_OFFSETS_V5: | |
12527 | sections.str_offsets_offset = offset; | |
12528 | sections.str_offsets_size = size; | |
12529 | break; | |
12530 | case DW_SECT_RESERVED_V5: | |
12531 | default: | |
12532 | break; | |
12533 | } | |
d2854d8d CT |
12534 | } |
12535 | ||
12536 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12537 | have dwo_unit "live" in that. At least for now. | |
12538 | ||
12539 | The DWP file can be made up of a random collection of CUs and TUs. | |
12540 | However, for each CU + set of TUs that came from the same original DWO | |
12541 | file, we can combine them back into a virtual DWO file to save space | |
12542 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12543 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12544 | ||
12545 | std::string virtual_dwo_name = | |
12546 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld-%ld-%ld", | |
dda83cd7 SM |
12547 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), |
12548 | (long) (sections.line_size ? sections.line_offset : 0), | |
12549 | (long) (sections.loclists_size ? sections.loclists_offset : 0), | |
12550 | (long) (sections.str_offsets_size | |
12551 | ? sections.str_offsets_offset : 0), | |
12552 | (long) (sections.macro_size ? sections.macro_offset : 0), | |
12553 | (long) (sections.rnglists_size ? sections.rnglists_offset: 0)); | |
d2854d8d CT |
12554 | /* Can we use an existing virtual DWO file? */ |
12555 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, | |
dda83cd7 SM |
12556 | virtual_dwo_name.c_str (), |
12557 | comp_dir); | |
d2854d8d CT |
12558 | /* Create one if necessary. */ |
12559 | if (*dwo_file_slot == NULL) | |
12560 | { | |
6f738b01 SM |
12561 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12562 | virtual_dwo_name.c_str ()); | |
12563 | ||
d2854d8d CT |
12564 | dwo_file = new struct dwo_file; |
12565 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); | |
12566 | dwo_file->comp_dir = comp_dir; | |
12567 | dwo_file->sections.abbrev = | |
dda83cd7 SM |
12568 | create_dwp_v2_or_v5_section (per_objfile, |
12569 | &dwp_file->sections.abbrev, | |
12570 | sections.abbrev_offset, | |
12571 | sections.abbrev_size); | |
d2854d8d | 12572 | dwo_file->sections.line = |
dda83cd7 SM |
12573 | create_dwp_v2_or_v5_section (per_objfile, |
12574 | &dwp_file->sections.line, | |
12575 | sections.line_offset, sections.line_size); | |
d2854d8d | 12576 | dwo_file->sections.macro = |
dda83cd7 SM |
12577 | create_dwp_v2_or_v5_section (per_objfile, |
12578 | &dwp_file->sections.macro, | |
12579 | sections.macro_offset, | |
12580 | sections.macro_size); | |
d2854d8d | 12581 | dwo_file->sections.loclists = |
dda83cd7 SM |
12582 | create_dwp_v2_or_v5_section (per_objfile, |
12583 | &dwp_file->sections.loclists, | |
12584 | sections.loclists_offset, | |
12585 | sections.loclists_size); | |
d2854d8d | 12586 | dwo_file->sections.rnglists = |
dda83cd7 SM |
12587 | create_dwp_v2_or_v5_section (per_objfile, |
12588 | &dwp_file->sections.rnglists, | |
12589 | sections.rnglists_offset, | |
12590 | sections.rnglists_size); | |
d2854d8d | 12591 | dwo_file->sections.str_offsets = |
dda83cd7 SM |
12592 | create_dwp_v2_or_v5_section (per_objfile, |
12593 | &dwp_file->sections.str_offsets, | |
12594 | sections.str_offsets_offset, | |
12595 | sections.str_offsets_size); | |
d2854d8d CT |
12596 | /* The "str" section is global to the entire DWP file. */ |
12597 | dwo_file->sections.str = dwp_file->sections.str; | |
12598 | /* The info or types section is assigned below to dwo_unit, | |
dda83cd7 SM |
12599 | there's no need to record it in dwo_file. |
12600 | Also, we can't simply record type sections in dwo_file because | |
12601 | we record a pointer into the vector in dwo_unit. As we collect more | |
12602 | types we'll grow the vector and eventually have to reallocate space | |
12603 | for it, invalidating all copies of pointers into the previous | |
12604 | contents. */ | |
d2854d8d CT |
12605 | *dwo_file_slot = dwo_file; |
12606 | } | |
12607 | else | |
12608 | { | |
6f738b01 SM |
12609 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12610 | virtual_dwo_name.c_str ()); | |
12611 | ||
d2854d8d CT |
12612 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
12613 | } | |
12614 | ||
12615 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); | |
12616 | dwo_unit->dwo_file = dwo_file; | |
12617 | dwo_unit->signature = signature; | |
12618 | dwo_unit->section | |
12619 | = XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); | |
12620 | *dwo_unit->section = create_dwp_v2_or_v5_section (per_objfile, | |
dda83cd7 SM |
12621 | &dwp_file->sections.info, |
12622 | sections.info_or_types_offset, | |
12623 | sections.info_or_types_size); | |
73869dc2 DE |
12624 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
12625 | ||
12626 | return dwo_unit; | |
12627 | } | |
12628 | ||
57d63ce2 DE |
12629 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12630 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12631 | |
12632 | static struct dwo_unit * | |
976ca316 | 12633 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12634 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12635 | ULONGEST signature, int is_debug_types) |
80626a55 | 12636 | { |
57d63ce2 DE |
12637 | const struct dwp_hash_table *dwp_htab = |
12638 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12639 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12640 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12641 | uint32_t hash = signature & mask; |
12642 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12643 | unsigned int i; | |
12644 | void **slot; | |
870f88f7 | 12645 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12646 | |
12647 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12648 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12649 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12650 | ? dwp_file->loaded_tus.get () |
12651 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12652 | &find_dwo_cu, INSERT); |
80626a55 DE |
12653 | |
12654 | if (*slot != NULL) | |
9a3c8263 | 12655 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12656 | |
12657 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12658 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12659 | { |
12660 | ULONGEST signature_in_table; | |
12661 | ||
12662 | signature_in_table = | |
57d63ce2 | 12663 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12664 | if (signature_in_table == signature) |
12665 | { | |
57d63ce2 DE |
12666 | uint32_t unit_index = |
12667 | read_4_bytes (dbfd, | |
12668 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12669 | |
73869dc2 DE |
12670 | if (dwp_file->version == 1) |
12671 | { | |
976ca316 SM |
12672 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12673 | unit_index, comp_dir, | |
12674 | signature, is_debug_types); | |
73869dc2 | 12675 | } |
d2854d8d | 12676 | else if (dwp_file->version == 2) |
73869dc2 | 12677 | { |
976ca316 SM |
12678 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12679 | unit_index, comp_dir, | |
12680 | signature, is_debug_types); | |
73869dc2 | 12681 | } |
d2854d8d CT |
12682 | else /* version == 5 */ |
12683 | { | |
12684 | *slot = create_dwo_unit_in_dwp_v5 (per_objfile, dwp_file, | |
12685 | unit_index, comp_dir, | |
12686 | signature, is_debug_types); | |
12687 | } | |
9a3c8263 | 12688 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12689 | } |
12690 | if (signature_in_table == 0) | |
12691 | return NULL; | |
12692 | hash = (hash + hash2) & mask; | |
12693 | } | |
12694 | ||
12695 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12696 | " [in module %s]"), | |
12697 | dwp_file->name); | |
12698 | } | |
12699 | ||
ab5088bf | 12700 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12701 | Open the file specified by FILE_NAME and hand it off to BFD for |
12702 | preliminary analysis. Return a newly initialized bfd *, which | |
12703 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12704 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12705 | SEARCH_CWD is true if the current directory is to be searched. |
12706 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12707 | If successful, the file is added to the bfd include table of the |
12708 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12709 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12710 | NOTE: This function is derived from symfile_bfd_open. */ |
12711 | ||
192b62ce | 12712 | static gdb_bfd_ref_ptr |
976ca316 | 12713 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12714 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12715 | { |
24b9144d | 12716 | int desc; |
9c02c129 DE |
12717 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12718 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12719 | to debug_file_directory. */ | |
e0cc99a6 | 12720 | const char *search_path; |
9c02c129 DE |
12721 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12722 | ||
e0cc99a6 | 12723 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12724 | if (search_cwd) |
12725 | { | |
12726 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12727 | { |
12728 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12729 | debug_file_directory, | |
12730 | (char *) NULL)); | |
12731 | search_path = search_path_holder.get (); | |
12732 | } | |
6ac97d4c | 12733 | else |
e0cc99a6 | 12734 | search_path = "."; |
6ac97d4c | 12735 | } |
9c02c129 | 12736 | else |
e0cc99a6 | 12737 | search_path = debug_file_directory; |
3019eac3 | 12738 | |
24b9144d | 12739 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12740 | if (is_dwp) |
12741 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12742 | |
12743 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12744 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12745 | O_RDONLY | O_BINARY, &absolute_name); |
12746 | if (desc < 0) | |
12747 | return NULL; | |
12748 | ||
e0cc99a6 TT |
12749 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12750 | gnutarget, desc)); | |
9c02c129 DE |
12751 | if (sym_bfd == NULL) |
12752 | return NULL; | |
192b62ce | 12753 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12754 | |
192b62ce TT |
12755 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12756 | return NULL; | |
3019eac3 | 12757 | |
13aaf454 DE |
12758 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12759 | This is important because things like demangled_names_hash lives in the | |
12760 | objfile's per_bfd space and may have references to things like symbol | |
12761 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12762 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12763 | |
3019eac3 DE |
12764 | return sym_bfd; |
12765 | } | |
12766 | ||
ab5088bf | 12767 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12768 | COMP_DIR is the DW_AT_comp_dir attribute. |
12769 | The result is the bfd handle of the file. | |
12770 | If there is a problem finding or opening the file, return NULL. | |
12771 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12772 | same as symfile_bfd_open. */ | |
12773 | ||
192b62ce | 12774 | static gdb_bfd_ref_ptr |
976ca316 | 12775 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12776 | const char *file_name, const char *comp_dir) |
3019eac3 | 12777 | { |
80626a55 | 12778 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12779 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12780 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12781 | |
12782 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12783 | ||
12784 | if (comp_dir != NULL) | |
12785 | { | |
43816ebc TT |
12786 | gdb::unique_xmalloc_ptr<char> path_to_try |
12787 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12788 | |
12789 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12790 | search path, which seems useful. */ | |
976ca316 | 12791 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12792 | 0 /*is_dwp*/, |
192b62ce | 12793 | 1 /*search_cwd*/)); |
3019eac3 DE |
12794 | if (abfd != NULL) |
12795 | return abfd; | |
12796 | } | |
12797 | ||
12798 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12799 | is a list of paths. */ | |
12800 | ||
12801 | if (*debug_file_directory == '\0') | |
12802 | return NULL; | |
12803 | ||
976ca316 | 12804 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12805 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12806 | } |
12807 | ||
80626a55 DE |
12808 | /* This function is mapped across the sections and remembers the offset and |
12809 | size of each of the DWO debugging sections we are interested in. */ | |
12810 | ||
12811 | static void | |
5bb6e9dd TT |
12812 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, |
12813 | dwo_sections *dwo_sections) | |
80626a55 | 12814 | { |
80626a55 DE |
12815 | const struct dwop_section_names *names = &dwop_section_names; |
12816 | ||
12817 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12818 | { | |
049412e3 | 12819 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12820 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12821 | } |
12822 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12823 | { | |
049412e3 | 12824 | dwo_sections->info.s.section = sectp; |
fd361982 | 12825 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12826 | } |
12827 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12828 | { | |
049412e3 | 12829 | dwo_sections->line.s.section = sectp; |
fd361982 | 12830 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12831 | } |
12832 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12833 | { | |
049412e3 | 12834 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12835 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12836 | } |
41144253 | 12837 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12838 | { | |
12839 | dwo_sections->loclists.s.section = sectp; | |
12840 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12841 | } | |
80626a55 DE |
12842 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12843 | { | |
049412e3 | 12844 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12845 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12846 | } |
12847 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12848 | { | |
049412e3 | 12849 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12850 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12851 | } |
d0ce17d8 CT |
12852 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) |
12853 | { | |
12854 | dwo_sections->rnglists.s.section = sectp; | |
12855 | dwo_sections->rnglists.size = bfd_section_size (sectp); | |
12856 | } | |
80626a55 DE |
12857 | else if (section_is_p (sectp->name, &names->str_dwo)) |
12858 | { | |
049412e3 | 12859 | dwo_sections->str.s.section = sectp; |
fd361982 | 12860 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12861 | } |
12862 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12863 | { | |
049412e3 | 12864 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12865 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12866 | } |
12867 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12868 | { | |
12869 | struct dwarf2_section_info type_section; | |
12870 | ||
12871 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12872 | type_section.s.section = sectp; |
fd361982 | 12873 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12874 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12875 | } |
12876 | } | |
12877 | ||
ab5088bf | 12878 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12879 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12880 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12881 | |
12882 | static struct dwo_file * | |
4ab09049 SM |
12883 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12884 | const char *comp_dir) | |
3019eac3 | 12885 | { |
976ca316 | 12886 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12887 | |
976ca316 | 12888 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12889 | if (dbfd == NULL) |
12890 | { | |
6f738b01 SM |
12891 | dwarf_read_debug_printf ("DWO file not found: %s", dwo_name); |
12892 | ||
80626a55 DE |
12893 | return NULL; |
12894 | } | |
263db9a1 | 12895 | |
51ac9db5 | 12896 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12897 | dwo_file->dwo_name = dwo_name; |
12898 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12899 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12900 | |
5bb6e9dd TT |
12901 | for (asection *sec : gdb_bfd_sections (dwo_file->dbfd)) |
12902 | dwarf2_locate_dwo_sections (dwo_file->dbfd.get (), sec, | |
12903 | &dwo_file->sections); | |
3019eac3 | 12904 | |
976ca316 SM |
12905 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12906 | dwo_file->cus); | |
3019eac3 | 12907 | |
d2854d8d CT |
12908 | if (cu->per_cu->dwarf_version < 5) |
12909 | { | |
12910 | create_debug_types_hash_table (per_objfile, dwo_file.get (), | |
12911 | dwo_file->sections.types, dwo_file->tus); | |
12912 | } | |
12913 | else | |
12914 | { | |
12915 | create_debug_type_hash_table (per_objfile, dwo_file.get (), | |
12916 | &dwo_file->sections.info, dwo_file->tus, | |
12917 | rcuh_kind::TYPE); | |
12918 | } | |
3019eac3 | 12919 | |
6f738b01 | 12920 | dwarf_read_debug_printf ("DWO file found: %s", dwo_name); |
80626a55 | 12921 | |
263db9a1 | 12922 | return dwo_file.release (); |
3019eac3 DE |
12923 | } |
12924 | ||
80626a55 | 12925 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12926 | size of each of the DWP debugging sections common to version 1 and 2 that |
12927 | we are interested in. */ | |
3019eac3 | 12928 | |
80626a55 | 12929 | static void |
73869dc2 | 12930 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
5bb6e9dd | 12931 | dwp_file *dwp_file) |
3019eac3 | 12932 | { |
80626a55 DE |
12933 | const struct dwop_section_names *names = &dwop_section_names; |
12934 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12935 | |
80626a55 | 12936 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12937 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12938 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12939 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12940 | |
80626a55 DE |
12941 | /* Look for specific sections that we need. */ |
12942 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12943 | { | |
049412e3 | 12944 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12945 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12946 | } |
12947 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12948 | { | |
049412e3 | 12949 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12950 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12951 | } |
12952 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12953 | { | |
049412e3 | 12954 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12955 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12956 | } |
12957 | } | |
3019eac3 | 12958 | |
73869dc2 DE |
12959 | /* This function is mapped across the sections and remembers the offset and |
12960 | size of each of the DWP version 2 debugging sections that we are interested | |
12961 | in. This is split into a separate function because we don't know if we | |
d2854d8d | 12962 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ |
73869dc2 DE |
12963 | |
12964 | static void | |
12965 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12966 | { | |
9a3c8263 | 12967 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12968 | const struct dwop_section_names *names = &dwop_section_names; |
12969 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12970 | ||
12971 | /* Record the ELF section number for later lookup: this is what the | |
12972 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12973 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12974 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12975 | ||
12976 | /* Look for specific sections that we need. */ | |
12977 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12978 | { | |
049412e3 | 12979 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12980 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12981 | } |
12982 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12983 | { | |
049412e3 | 12984 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12985 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12986 | } |
12987 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12988 | { | |
049412e3 | 12989 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12990 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12991 | } |
12992 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12993 | { | |
049412e3 | 12994 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12995 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12996 | } |
12997 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12998 | { | |
049412e3 | 12999 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 13000 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
13001 | } |
13002 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13003 | { | |
049412e3 | 13004 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 13005 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
13006 | } |
13007 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13008 | { | |
049412e3 | 13009 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 13010 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
13011 | } |
13012 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13013 | { | |
049412e3 | 13014 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 13015 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
13016 | } |
13017 | } | |
13018 | ||
d2854d8d CT |
13019 | /* This function is mapped across the sections and remembers the offset and |
13020 | size of each of the DWP version 5 debugging sections that we are interested | |
13021 | in. This is split into a separate function because we don't know if we | |
13022 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ | |
13023 | ||
13024 | static void | |
13025 | dwarf2_locate_v5_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13026 | { | |
13027 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; | |
13028 | const struct dwop_section_names *names = &dwop_section_names; | |
13029 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13030 | ||
13031 | /* Record the ELF section number for later lookup: this is what the | |
13032 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13033 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13034 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13035 | ||
13036 | /* Look for specific sections that we need. */ | |
13037 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13038 | { | |
13039 | dwp_file->sections.abbrev.s.section = sectp; | |
13040 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); | |
13041 | } | |
13042 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13043 | { | |
13044 | dwp_file->sections.info.s.section = sectp; | |
13045 | dwp_file->sections.info.size = bfd_section_size (sectp); | |
13046 | } | |
13047 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13048 | { | |
13049 | dwp_file->sections.line.s.section = sectp; | |
13050 | dwp_file->sections.line.size = bfd_section_size (sectp); | |
13051 | } | |
13052 | else if (section_is_p (sectp->name, &names->loclists_dwo)) | |
13053 | { | |
13054 | dwp_file->sections.loclists.s.section = sectp; | |
13055 | dwp_file->sections.loclists.size = bfd_section_size (sectp); | |
13056 | } | |
13057 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13058 | { | |
13059 | dwp_file->sections.macro.s.section = sectp; | |
13060 | dwp_file->sections.macro.size = bfd_section_size (sectp); | |
13061 | } | |
13062 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) | |
13063 | { | |
13064 | dwp_file->sections.rnglists.s.section = sectp; | |
13065 | dwp_file->sections.rnglists.size = bfd_section_size (sectp); | |
13066 | } | |
13067 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13068 | { | |
13069 | dwp_file->sections.str_offsets.s.section = sectp; | |
13070 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); | |
13071 | } | |
13072 | } | |
13073 | ||
80626a55 | 13074 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13075 | |
80626a55 DE |
13076 | static hashval_t |
13077 | hash_dwp_loaded_cutus (const void *item) | |
13078 | { | |
9a3c8263 | 13079 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13080 | |
80626a55 DE |
13081 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13082 | return dwo_unit->signature; | |
3019eac3 DE |
13083 | } |
13084 | ||
80626a55 | 13085 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13086 | |
80626a55 DE |
13087 | static int |
13088 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13089 | { |
9a3c8263 SM |
13090 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13091 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13092 | |
80626a55 DE |
13093 | return dua->signature == dub->signature; |
13094 | } | |
3019eac3 | 13095 | |
80626a55 | 13096 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13097 | |
48b490f2 | 13098 | static htab_up |
298e9637 | 13099 | allocate_dwp_loaded_cutus_table () |
80626a55 | 13100 | { |
48b490f2 TT |
13101 | return htab_up (htab_create_alloc (3, |
13102 | hash_dwp_loaded_cutus, | |
13103 | eq_dwp_loaded_cutus, | |
13104 | NULL, xcalloc, xfree)); | |
80626a55 | 13105 | } |
3019eac3 | 13106 | |
ab5088bf DE |
13107 | /* Try to open DWP file FILE_NAME. |
13108 | The result is the bfd handle of the file. | |
13109 | If there is a problem finding or opening the file, return NULL. | |
13110 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13111 | same as symfile_bfd_open. */ | |
13112 | ||
192b62ce | 13113 | static gdb_bfd_ref_ptr |
976ca316 | 13114 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 13115 | { |
976ca316 | 13116 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 13117 | 1 /*is_dwp*/, |
192b62ce | 13118 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13119 | if (abfd != NULL) |
13120 | return abfd; | |
13121 | ||
13122 | /* Work around upstream bug 15652. | |
13123 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13124 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13125 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13126 | of the executable's path may have discarded the needed info. | |
13127 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13128 | .gnu_debuglink, but that doesn't exist yet.] | |
13129 | Strip the directory from FILE_NAME and search again. */ | |
13130 | if (*debug_file_directory != '\0') | |
13131 | { | |
13132 | /* Don't implicitly search the current directory here. | |
13133 | If the user wants to search "." to handle this case, | |
13134 | it must be added to debug-file-directory. */ | |
976ca316 SM |
13135 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
13136 | 1 /*is_dwp*/, | |
6ac97d4c DE |
13137 | 0 /*search_cwd*/); |
13138 | } | |
13139 | ||
13140 | return NULL; | |
ab5088bf DE |
13141 | } |
13142 | ||
80626a55 DE |
13143 | /* Initialize the use of the DWP file for the current objfile. |
13144 | By convention the name of the DWP file is ${objfile}.dwp. | |
13145 | The result is NULL if it can't be found. */ | |
a766d390 | 13146 | |
400174b1 | 13147 | static std::unique_ptr<struct dwp_file> |
976ca316 | 13148 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 13149 | { |
976ca316 | 13150 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 13151 | |
82bf32bc JK |
13152 | /* Try to find first .dwp for the binary file before any symbolic links |
13153 | resolving. */ | |
6c447423 DE |
13154 | |
13155 | /* If the objfile is a debug file, find the name of the real binary | |
13156 | file and get the name of dwp file from there. */ | |
d721ba37 | 13157 | std::string dwp_name; |
6c447423 DE |
13158 | if (objfile->separate_debug_objfile_backlink != NULL) |
13159 | { | |
13160 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13161 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13162 | |
d721ba37 | 13163 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13164 | } |
13165 | else | |
d721ba37 PA |
13166 | dwp_name = objfile->original_name; |
13167 | ||
13168 | dwp_name += ".dwp"; | |
80626a55 | 13169 | |
976ca316 | 13170 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13171 | if (dbfd == NULL |
13172 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13173 | { | |
13174 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13175 | dwp_name = objfile_name (objfile); |
13176 | dwp_name += ".dwp"; | |
976ca316 | 13177 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13178 | } |
13179 | ||
80626a55 DE |
13180 | if (dbfd == NULL) |
13181 | { | |
6f738b01 SM |
13182 | dwarf_read_debug_printf ("DWP file not found: %s", dwp_name.c_str ()); |
13183 | ||
400174b1 | 13184 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13185 | } |
400174b1 TT |
13186 | |
13187 | const char *name = bfd_get_filename (dbfd.get ()); | |
13188 | std::unique_ptr<struct dwp_file> dwp_file | |
13189 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13190 | |
0a0f4c01 | 13191 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 13192 | dwp_file->elf_sections = |
976ca316 | 13193 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
13194 | dwp_file->num_sections, asection *); |
13195 | ||
5bb6e9dd TT |
13196 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13197 | dwarf2_locate_common_dwp_sections (dwp_file->dbfd.get (), sec, | |
13198 | dwp_file.get ()); | |
80626a55 | 13199 | |
976ca316 | 13200 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 13201 | |
976ca316 | 13202 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 13203 | |
73869dc2 | 13204 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13205 | if (dwp_file->cus && dwp_file->tus |
13206 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13207 | { |
13208 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13209 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13210 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13211 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13212 | " TU version %s [in DWP file %s]"), | |
13213 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13214 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13215 | } |
08302ed2 DE |
13216 | |
13217 | if (dwp_file->cus) | |
13218 | dwp_file->version = dwp_file->cus->version; | |
13219 | else if (dwp_file->tus) | |
13220 | dwp_file->version = dwp_file->tus->version; | |
13221 | else | |
13222 | dwp_file->version = 2; | |
73869dc2 | 13223 | |
5bb6e9dd TT |
13224 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13225 | { | |
13226 | if (dwp_file->version == 2) | |
13227 | dwarf2_locate_v2_dwp_sections (dwp_file->dbfd.get (), sec, | |
13228 | dwp_file.get ()); | |
13229 | else | |
13230 | dwarf2_locate_v5_dwp_sections (dwp_file->dbfd.get (), sec, | |
13231 | dwp_file.get ()); | |
13232 | } | |
73869dc2 | 13233 | |
298e9637 SM |
13234 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
13235 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 13236 | |
6f738b01 SM |
13237 | dwarf_read_debug_printf ("DWP file found: %s", dwp_file->name); |
13238 | dwarf_read_debug_printf (" %s CUs, %s TUs", | |
13239 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13240 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13241 | |
13242 | return dwp_file; | |
3019eac3 | 13243 | } |
c906108c | 13244 | |
ab5088bf DE |
13245 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13246 | ||
13247 | static struct dwp_file * | |
976ca316 | 13248 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 13249 | { |
976ca316 | 13250 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 13251 | { |
976ca316 SM |
13252 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
13253 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 13254 | } |
976ca316 | 13255 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
13256 | } |
13257 | ||
80626a55 DE |
13258 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13259 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13260 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13261 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13262 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13263 | ||
13264 | This is called, for example, when wanting to read a variable with a | |
13265 | complex location. Therefore we don't want to do file i/o for every call. | |
13266 | Therefore we don't want to look for a DWO file on every call. | |
13267 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13268 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13269 | for a DWO file. | |
13270 | ||
1c658ad5 | 13271 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13272 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13273 | |
3019eac3 | 13274 | static struct dwo_unit * |
4ab09049 | 13275 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 13276 | ULONGEST signature, int is_debug_types) |
3019eac3 | 13277 | { |
976ca316 SM |
13278 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13279 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
13280 | const char *kind = is_debug_types ? "TU" : "CU"; |
13281 | void **dwo_file_slot; | |
3019eac3 | 13282 | struct dwo_file *dwo_file; |
80626a55 | 13283 | struct dwp_file *dwp_file; |
cb1df416 | 13284 | |
6a506a2d DE |
13285 | /* First see if there's a DWP file. |
13286 | If we have a DWP file but didn't find the DWO inside it, don't | |
13287 | look for the original DWO file. It makes gdb behave differently | |
13288 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13289 | |
976ca316 | 13290 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 13291 | if (dwp_file != NULL) |
cf2c3c16 | 13292 | { |
80626a55 DE |
13293 | const struct dwp_hash_table *dwp_htab = |
13294 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13295 | ||
13296 | if (dwp_htab != NULL) | |
13297 | { | |
13298 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
13299 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
13300 | is_debug_types); | |
80626a55 DE |
13301 | |
13302 | if (dwo_cutu != NULL) | |
13303 | { | |
6f738b01 SM |
13304 | dwarf_read_debug_printf ("Virtual DWO %s %s found: @%s", |
13305 | kind, hex_string (signature), | |
13306 | host_address_to_string (dwo_cutu)); | |
13307 | ||
80626a55 DE |
13308 | return dwo_cutu; |
13309 | } | |
13310 | } | |
13311 | } | |
6a506a2d | 13312 | else |
80626a55 | 13313 | { |
6a506a2d | 13314 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13315 | |
976ca316 | 13316 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 13317 | if (*dwo_file_slot == NULL) |
80626a55 | 13318 | { |
6a506a2d | 13319 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 13320 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 13321 | } |
6a506a2d | 13322 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13323 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13324 | |
6a506a2d | 13325 | if (dwo_file != NULL) |
19c3d4c9 | 13326 | { |
6a506a2d DE |
13327 | struct dwo_unit *dwo_cutu = NULL; |
13328 | ||
13329 | if (is_debug_types && dwo_file->tus) | |
13330 | { | |
13331 | struct dwo_unit find_dwo_cutu; | |
13332 | ||
13333 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13334 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 13335 | dwo_cutu |
b0b6a987 TT |
13336 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
13337 | &find_dwo_cutu); | |
6a506a2d | 13338 | } |
33c5cd75 | 13339 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13340 | { |
33c5cd75 DB |
13341 | struct dwo_unit find_dwo_cutu; |
13342 | ||
13343 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13344 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 13345 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 13346 | &find_dwo_cutu); |
6a506a2d DE |
13347 | } |
13348 | ||
13349 | if (dwo_cutu != NULL) | |
13350 | { | |
6f738b01 SM |
13351 | dwarf_read_debug_printf ("DWO %s %s(%s) found: @%s", |
13352 | kind, dwo_name, hex_string (signature), | |
13353 | host_address_to_string (dwo_cutu)); | |
13354 | ||
6a506a2d | 13355 | return dwo_cutu; |
80626a55 DE |
13356 | } |
13357 | } | |
2e276125 | 13358 | } |
9cdd5dbd | 13359 | |
80626a55 DE |
13360 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13361 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13362 | correctly to find the file. */ | |
13363 | ||
6f738b01 SM |
13364 | dwarf_read_debug_printf ("DWO %s %s(%s) not found", |
13365 | kind, dwo_name, hex_string (signature)); | |
3019eac3 | 13366 | |
6656a72d DE |
13367 | /* This is a warning and not a complaint because it can be caused by |
13368 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13369 | { |
13370 | /* Print the name of the DWP file if we looked there, helps the user | |
13371 | better diagnose the problem. */ | |
791afaa2 | 13372 | std::string dwp_text; |
43942612 DE |
13373 | |
13374 | if (dwp_file != NULL) | |
791afaa2 TT |
13375 | dwp_text = string_printf (" [in DWP file %s]", |
13376 | lbasename (dwp_file->name)); | |
43942612 | 13377 | |
9d8780f0 | 13378 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 13379 | " [in module %s]"), |
4ab09049 SM |
13380 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
13381 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 13382 | } |
3019eac3 | 13383 | return NULL; |
5fb290d7 DJ |
13384 | } |
13385 | ||
80626a55 DE |
13386 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13387 | See lookup_dwo_cutu_unit for details. */ | |
13388 | ||
13389 | static struct dwo_unit * | |
4ab09049 | 13390 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
13391 | ULONGEST signature) |
13392 | { | |
4ab09049 SM |
13393 | gdb_assert (!cu->per_cu->is_debug_types); |
13394 | ||
13395 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
13396 | } |
13397 | ||
13398 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13399 | See lookup_dwo_cutu_unit for details. */ | |
13400 | ||
13401 | static struct dwo_unit * | |
4ab09049 | 13402 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 13403 | { |
4ab09049 SM |
13404 | gdb_assert (cu->per_cu->is_debug_types); |
13405 | ||
13406 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
13407 | ||
13408 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
13409 | } |
13410 | ||
89e63ee4 DE |
13411 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13412 | ||
13413 | static int | |
13414 | queue_and_load_dwo_tu (void **slot, void *info) | |
13415 | { | |
13416 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 13417 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 13418 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 13419 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
13420 | |
13421 | if (sig_type != NULL) | |
13422 | { | |
13423 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13424 | ||
13425 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13426 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13427 | while processing PER_CU. */ | |
120ce1b5 | 13428 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
13429 | load_full_type_unit (sig_cu, cu->per_objfile); |
13430 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
13431 | } |
13432 | ||
13433 | return 1; | |
13434 | } | |
13435 | ||
1b555f17 | 13436 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
13437 | The DWO may have the only definition of the type, though it may not be |
13438 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13439 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13440 | ||
13441 | static void | |
1b555f17 | 13442 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
13443 | { |
13444 | struct dwo_unit *dwo_unit; | |
13445 | struct dwo_file *dwo_file; | |
13446 | ||
1b555f17 SM |
13447 | gdb_assert (cu != nullptr); |
13448 | gdb_assert (!cu->per_cu->is_debug_types); | |
13449 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 13450 | |
1b555f17 | 13451 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
13452 | gdb_assert (dwo_unit != NULL); |
13453 | ||
13454 | dwo_file = dwo_unit->dwo_file; | |
13455 | if (dwo_file->tus != NULL) | |
1b555f17 | 13456 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
13457 | } |
13458 | ||
3019eac3 | 13459 | /* Read in various DIEs. */ |
348e048f | 13460 | |
d389af10 | 13461 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13462 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13463 | already referenced by DW_AT_abstract_origin from the children of the | |
13464 | current DIE. */ | |
d389af10 JK |
13465 | |
13466 | static void | |
13467 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13468 | { | |
13469 | struct die_info *child_die; | |
791afaa2 | 13470 | sect_offset *offsetp; |
d389af10 JK |
13471 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13472 | struct die_info *origin_die; | |
13473 | /* Iterator of the ORIGIN_DIE children. */ | |
13474 | struct die_info *origin_child_die; | |
d389af10 | 13475 | struct attribute *attr; |
cd02d79d PA |
13476 | struct dwarf2_cu *origin_cu; |
13477 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13478 | |
13479 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13480 | if (!attr) | |
13481 | return; | |
13482 | ||
cd02d79d PA |
13483 | /* Note that following die references may follow to a die in a |
13484 | different cu. */ | |
13485 | ||
13486 | origin_cu = cu; | |
13487 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13488 | ||
13489 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13490 | symbols in. */ | |
13491 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13492 | origin_cu->list_in_scope = cu->list_in_scope; | |
13493 | ||
edb3359d DJ |
13494 | if (die->tag != origin_die->tag |
13495 | && !(die->tag == DW_TAG_inlined_subroutine | |
13496 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13497 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13498 | sect_offset_str (die->sect_off), |
13499 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13500 | |
791afaa2 | 13501 | std::vector<sect_offset> offsets; |
d389af10 | 13502 | |
3ea89b92 PMR |
13503 | for (child_die = die->child; |
13504 | child_die && child_die->tag; | |
436c571c | 13505 | child_die = child_die->sibling) |
3ea89b92 PMR |
13506 | { |
13507 | struct die_info *child_origin_die; | |
13508 | struct dwarf2_cu *child_origin_cu; | |
13509 | ||
13510 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13511 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13512 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13513 | present in the abstract instance but not referenced in the concrete | |
13514 | one. */ | |
216f72a1 | 13515 | if (child_die->tag == DW_TAG_call_site |
dda83cd7 | 13516 | || child_die->tag == DW_TAG_GNU_call_site) |
3ea89b92 PMR |
13517 | continue; |
13518 | ||
c38f313d DJ |
13519 | /* For each CHILD_DIE, find the corresponding child of |
13520 | ORIGIN_DIE. If there is more than one layer of | |
13521 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13522 | but GCC versions at least through 4.4 generate this (GCC PR | |
13523 | 40573). */ | |
3ea89b92 PMR |
13524 | child_origin_die = child_die; |
13525 | child_origin_cu = cu; | |
c38f313d DJ |
13526 | while (1) |
13527 | { | |
cd02d79d PA |
13528 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13529 | child_origin_cu); | |
c38f313d DJ |
13530 | if (attr == NULL) |
13531 | break; | |
cd02d79d PA |
13532 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13533 | &child_origin_cu); | |
c38f313d DJ |
13534 | } |
13535 | ||
d389af10 JK |
13536 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13537 | counterpart may exist. */ | |
c38f313d | 13538 | if (child_origin_die != child_die) |
d389af10 | 13539 | { |
edb3359d DJ |
13540 | if (child_die->tag != child_origin_die->tag |
13541 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13542 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13543 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13544 | "different tags"), |
9d8780f0 SM |
13545 | sect_offset_str (child_die->sect_off), |
13546 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13547 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13548 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13549 | "different parents"), |
9d8780f0 SM |
13550 | sect_offset_str (child_die->sect_off), |
13551 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13552 | else |
791afaa2 | 13553 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13554 | } |
d389af10 | 13555 | } |
791afaa2 TT |
13556 | std::sort (offsets.begin (), offsets.end ()); |
13557 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13558 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13559 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13560 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13561 | "to DIE %s as their abstract origin"), |
13562 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13563 | |
791afaa2 | 13564 | offsetp = offsets.data (); |
d389af10 JK |
13565 | origin_child_die = origin_die->child; |
13566 | while (origin_child_die && origin_child_die->tag) | |
13567 | { | |
13568 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13569 | while (offsetp < offsets_end |
9c541725 | 13570 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13571 | offsetp++; |
b64f50a1 | 13572 | if (offsetp >= offsets_end |
9c541725 | 13573 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13574 | { |
adde2bff DE |
13575 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13576 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13577 | This can happen with mutually referenced abstract_origins. | |
13578 | PR 16581. */ | |
13579 | if (!origin_child_die->in_process) | |
13580 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13581 | } |
436c571c | 13582 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13583 | } |
cd02d79d | 13584 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13585 | |
13586 | if (cu != origin_cu) | |
13587 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13588 | } |
13589 | ||
c906108c | 13590 | static void |
e7c27a73 | 13591 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13592 | { |
5e22e966 | 13593 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13594 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13595 | struct context_stack *newobj; |
c906108c SS |
13596 | CORE_ADDR lowpc; |
13597 | CORE_ADDR highpc; | |
13598 | struct die_info *child_die; | |
edb3359d | 13599 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13600 | const char *name; |
e142c38c | 13601 | CORE_ADDR baseaddr; |
801e3a5b | 13602 | struct block *block; |
edb3359d | 13603 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13604 | std::vector<struct symbol *> template_args; |
34eaf542 | 13605 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13606 | |
13607 | if (inlined_func) | |
13608 | { | |
13609 | /* If we do not have call site information, we can't show the | |
13610 | caller of this inlined function. That's too confusing, so | |
13611 | only use the scope for local variables. */ | |
13612 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13613 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13614 | if (call_line == NULL || call_file == NULL) | |
13615 | { | |
13616 | read_lexical_block_scope (die, cu); | |
13617 | return; | |
13618 | } | |
13619 | } | |
c906108c | 13620 | |
b3b3bada | 13621 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13622 | |
94af9270 | 13623 | name = dwarf2_name (die, cu); |
c906108c | 13624 | |
e8d05480 JB |
13625 | /* Ignore functions with missing or empty names. These are actually |
13626 | illegal according to the DWARF standard. */ | |
13627 | if (name == NULL) | |
13628 | { | |
b98664d3 | 13629 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13630 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13631 | return; |
13632 | } | |
13633 | ||
13634 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13635 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13636 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13637 | { |
ae4d0c03 | 13638 | attr = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 13639 | if (attr == nullptr || !attr->as_boolean ()) |
b98664d3 | 13640 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13641 | "for subprogram DIE at %s"), |
13642 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13643 | return; |
13644 | } | |
c906108c | 13645 | |
3e29f34a MR |
13646 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13647 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13648 | |
34eaf542 TT |
13649 | /* If we have any template arguments, then we must allocate a |
13650 | different sort of symbol. */ | |
436c571c | 13651 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13652 | { |
13653 | if (child_die->tag == DW_TAG_template_type_param | |
13654 | || child_die->tag == DW_TAG_template_value_param) | |
13655 | { | |
8c14c3a3 | 13656 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13657 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13658 | break; |
13659 | } | |
13660 | } | |
13661 | ||
c24bdb02 | 13662 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13663 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13664 | (struct symbol *) templ_func); | |
4c2df51b | 13665 | |
81873cc8 | 13666 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13667 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13668 | cu->language); |
13669 | ||
4cecd739 DJ |
13670 | /* If there is a location expression for DW_AT_frame_base, record |
13671 | it. */ | |
e142c38c | 13672 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13673 | if (attr != nullptr) |
fe978cb0 | 13674 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13675 | |
63e43d3a PMR |
13676 | /* If there is a location for the static link, record it. */ |
13677 | newobj->static_link = NULL; | |
13678 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13679 | if (attr != nullptr) |
63e43d3a | 13680 | { |
224c3ddb SM |
13681 | newobj->static_link |
13682 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13683 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13684 | cu->addr_type ()); |
63e43d3a PMR |
13685 | } |
13686 | ||
c24bdb02 | 13687 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13688 | |
639d11d3 | 13689 | if (die->child != NULL) |
c906108c | 13690 | { |
639d11d3 | 13691 | child_die = die->child; |
c906108c SS |
13692 | while (child_die && child_die->tag) |
13693 | { | |
34eaf542 TT |
13694 | if (child_die->tag == DW_TAG_template_type_param |
13695 | || child_die->tag == DW_TAG_template_value_param) | |
13696 | { | |
13697 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13698 | ||
f1078f66 | 13699 | if (arg != NULL) |
2f4732b0 | 13700 | template_args.push_back (arg); |
34eaf542 TT |
13701 | } |
13702 | else | |
13703 | process_die (child_die, cu); | |
436c571c | 13704 | child_die = child_die->sibling; |
c906108c SS |
13705 | } |
13706 | } | |
13707 | ||
d389af10 JK |
13708 | inherit_abstract_dies (die, cu); |
13709 | ||
4a811a97 UW |
13710 | /* If we have a DW_AT_specification, we might need to import using |
13711 | directives from the context of the specification DIE. See the | |
13712 | comment in determine_prefix. */ | |
13713 | if (cu->language == language_cplus | |
13714 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13715 | { | |
13716 | struct dwarf2_cu *spec_cu = cu; | |
13717 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13718 | ||
13719 | while (spec_die) | |
13720 | { | |
13721 | child_die = spec_die->child; | |
13722 | while (child_die && child_die->tag) | |
13723 | { | |
13724 | if (child_die->tag == DW_TAG_imported_module) | |
13725 | process_die (child_die, spec_cu); | |
436c571c | 13726 | child_die = child_die->sibling; |
4a811a97 UW |
13727 | } |
13728 | ||
13729 | /* In some cases, GCC generates specification DIEs that | |
13730 | themselves contain DW_AT_specification attributes. */ | |
13731 | spec_die = die_specification (spec_die, &spec_cu); | |
13732 | } | |
13733 | } | |
13734 | ||
c24bdb02 | 13735 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13736 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13737 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13738 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13739 | |
df8a16a1 | 13740 | /* For C++, set the block's scope. */ |
45280282 IB |
13741 | if ((cu->language == language_cplus |
13742 | || cu->language == language_fortran | |
c44af4eb TT |
13743 | || cu->language == language_d |
13744 | || cu->language == language_rust) | |
4d4ec4e5 | 13745 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13746 | block_set_scope (block, determine_prefix (die, cu), |
13747 | &objfile->objfile_obstack); | |
df8a16a1 | 13748 | |
801e3a5b JB |
13749 | /* If we have address ranges, record them. */ |
13750 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13751 | |
a60f3166 | 13752 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13753 | |
34eaf542 | 13754 | /* Attach template arguments to function. */ |
2f4732b0 | 13755 | if (!template_args.empty ()) |
34eaf542 TT |
13756 | { |
13757 | gdb_assert (templ_func != NULL); | |
13758 | ||
2f4732b0 | 13759 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13760 | templ_func->template_arguments |
dda83cd7 | 13761 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
8d749320 | 13762 | templ_func->n_template_arguments); |
34eaf542 | 13763 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13764 | template_args.data (), |
34eaf542 | 13765 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13766 | |
13767 | /* Make sure that the symtab is set on the new symbols. Even | |
13768 | though they don't appear in this symtab directly, other parts | |
13769 | of gdb assume that symbols do, and this is reasonably | |
13770 | true. */ | |
8634679f | 13771 | for (symbol *sym : template_args) |
3e1d3d8c | 13772 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13773 | } |
13774 | ||
208d8187 JB |
13775 | /* In C++, we can have functions nested inside functions (e.g., when |
13776 | a function declares a class that has methods). This means that | |
13777 | when we finish processing a function scope, we may need to go | |
13778 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13779 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13780 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13781 | |
921e78cf JB |
13782 | /* If we've finished processing a top-level function, subsequent |
13783 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13784 | if (cu->get_builder ()->outermost_context_p ()) |
13785 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13786 | } |
13787 | ||
13788 | /* Process all the DIES contained within a lexical block scope. Start | |
13789 | a new scope, process the dies, and then close the scope. */ | |
13790 | ||
13791 | static void | |
e7c27a73 | 13792 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13793 | { |
5e22e966 | 13794 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13795 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13796 | CORE_ADDR lowpc, highpc; |
13797 | struct die_info *child_die; | |
e142c38c DJ |
13798 | CORE_ADDR baseaddr; |
13799 | ||
b3b3bada | 13800 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13801 | |
13802 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13803 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13804 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13805 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13806 | describe ranges. */ |
e385593e JK |
13807 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13808 | { | |
13809 | case PC_BOUNDS_NOT_PRESENT: | |
13810 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13811 | there was no wrapping by that DW_TAG_lexical_block. | |
13812 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13813 | for (child_die = die->child; | |
13814 | child_die != NULL && child_die->tag; | |
436c571c | 13815 | child_die = child_die->sibling) |
4f7bc5ed TT |
13816 | { |
13817 | /* We might already be processing this DIE. This can happen | |
13818 | in an unusual circumstance -- where a subroutine A | |
13819 | appears lexically in another subroutine B, but A actually | |
13820 | inlines B. The recursion is broken here, rather than in | |
13821 | inherit_abstract_dies, because it seems better to simply | |
13822 | drop concrete children here. */ | |
13823 | if (!child_die->in_process) | |
13824 | process_die (child_die, cu); | |
13825 | } | |
e385593e JK |
13826 | return; |
13827 | case PC_BOUNDS_INVALID: | |
13828 | return; | |
13829 | } | |
3e29f34a MR |
13830 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13831 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13832 | |
c24bdb02 | 13833 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13834 | if (die->child != NULL) |
c906108c | 13835 | { |
639d11d3 | 13836 | child_die = die->child; |
c906108c SS |
13837 | while (child_die && child_die->tag) |
13838 | { | |
e7c27a73 | 13839 | process_die (child_die, cu); |
436c571c | 13840 | child_die = child_die->sibling; |
c906108c SS |
13841 | } |
13842 | } | |
3ea89b92 | 13843 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13844 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13845 | |
c24bdb02 KS |
13846 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13847 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13848 | { |
801e3a5b | 13849 | struct block *block |
dda83cd7 | 13850 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13851 | cstk.start_addr, highpc); |
801e3a5b JB |
13852 | |
13853 | /* Note that recording ranges after traversing children, as we | |
dda83cd7 SM |
13854 | do here, means that recording a parent's ranges entails |
13855 | walking across all its children's ranges as they appear in | |
13856 | the address map, which is quadratic behavior. | |
13857 | ||
13858 | It would be nicer to record the parent's ranges before | |
13859 | traversing its children, simply overriding whatever you find | |
13860 | there. But since we don't even decide whether to create a | |
13861 | block until after we've traversed its children, that's hard | |
13862 | to do. */ | |
801e3a5b | 13863 | dwarf2_record_block_ranges (die, block, baseaddr, cu); |
c906108c | 13864 | } |
c24bdb02 KS |
13865 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13866 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13867 | } |
13868 | ||
216f72a1 | 13869 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13870 | |
13871 | static void | |
13872 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13873 | { | |
5e22e966 | 13874 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13875 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13876 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13877 | CORE_ADDR pc, baseaddr; |
13878 | struct attribute *attr; | |
13879 | struct call_site *call_site, call_site_local; | |
13880 | void **slot; | |
13881 | int nparams; | |
13882 | struct die_info *child_die; | |
13883 | ||
b3b3bada | 13884 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13885 | |
216f72a1 JK |
13886 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13887 | if (attr == NULL) | |
13888 | { | |
13889 | /* This was a pre-DWARF-5 GNU extension alias | |
13890 | for DW_AT_call_return_pc. */ | |
13891 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13892 | } | |
96408a79 SA |
13893 | if (!attr) |
13894 | { | |
b98664d3 | 13895 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13896 | "DIE %s [in module %s]"), |
13897 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13898 | return; |
13899 | } | |
95f982e5 | 13900 | pc = attr->as_address () + baseaddr; |
3e29f34a | 13901 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13902 | |
13903 | if (cu->call_site_htab == NULL) | |
13904 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13905 | NULL, &objfile->objfile_obstack, | |
13906 | hashtab_obstack_allocate, NULL); | |
13907 | call_site_local.pc = pc; | |
13908 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13909 | if (*slot != NULL) | |
13910 | { | |
b98664d3 | 13911 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13912 | "DIE %s [in module %s]"), |
13913 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13914 | objfile_name (objfile)); |
96408a79 SA |
13915 | return; |
13916 | } | |
13917 | ||
13918 | /* Count parameters at the caller. */ | |
13919 | ||
13920 | nparams = 0; | |
13921 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13922 | child_die = child_die->sibling) |
96408a79 | 13923 | { |
216f72a1 | 13924 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13925 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 | 13926 | { |
b98664d3 | 13927 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13928 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13929 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13930 | objfile_name (objfile)); |
96408a79 SA |
13931 | continue; |
13932 | } | |
13933 | ||
13934 | nparams++; | |
13935 | } | |
13936 | ||
224c3ddb SM |
13937 | call_site |
13938 | = ((struct call_site *) | |
13939 | obstack_alloc (&objfile->objfile_obstack, | |
13940 | sizeof (*call_site) | |
13941 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13942 | *slot = call_site; |
13943 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13944 | call_site->pc = pc; | |
13945 | ||
216f72a1 JK |
13946 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13947 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13948 | { |
13949 | struct die_info *func_die; | |
13950 | ||
13951 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13952 | for (func_die = die->parent; | |
13953 | func_die && func_die->tag != DW_TAG_subprogram | |
13954 | && func_die->tag != DW_TAG_subroutine_type; | |
13955 | func_die = func_die->parent); | |
13956 | ||
216f72a1 JK |
13957 | /* DW_AT_call_all_calls is a superset |
13958 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13959 | if (func_die |
dda83cd7 SM |
13960 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
13961 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
216f72a1 | 13962 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13963 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13964 | { | |
13965 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13966 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13967 | both the initial caller containing the real return address PC and | |
13968 | the final callee containing the current PC of a chain of tail | |
13969 | calls do not need to have the tail call list complete. But any | |
13970 | function candidate for a virtual tail call frame searched via | |
13971 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13972 | determined unambiguously. */ | |
13973 | } | |
13974 | else | |
13975 | { | |
13976 | struct type *func_type = NULL; | |
13977 | ||
13978 | if (func_die) | |
13979 | func_type = get_die_type (func_die, cu); | |
13980 | if (func_type != NULL) | |
13981 | { | |
78134374 | 13982 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13983 | |
13984 | /* Enlist this call site to the function. */ | |
13985 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13986 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13987 | } | |
13988 | else | |
b98664d3 | 13989 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13990 | "DIE %s [in module %s]"), |
13991 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13992 | } |
13993 | } | |
13994 | ||
216f72a1 JK |
13995 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13996 | if (attr == NULL) | |
13997 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13998 | if (attr == NULL) | |
13999 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14000 | if (attr == NULL) |
216f72a1 JK |
14001 | { |
14002 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14003 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14004 | } | |
96408a79 | 14005 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
9d2246fc | 14006 | if (!attr || (attr->form_is_block () && attr->as_block ()->size == 0)) |
96408a79 | 14007 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 14008 | else if (attr->form_is_block ()) |
96408a79 SA |
14009 | { |
14010 | struct dwarf2_locexpr_baton *dlbaton; | |
9d2246fc | 14011 | struct dwarf_block *block = attr->as_block (); |
96408a79 | 14012 | |
8d749320 | 14013 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
9d2246fc TT |
14014 | dlbaton->data = block->data; |
14015 | dlbaton->size = block->size; | |
a50264ba | 14016 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
14017 | dlbaton->per_cu = cu->per_cu; |
14018 | ||
14019 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14020 | } | |
cd6c91b4 | 14021 | else if (attr->form_is_ref ()) |
96408a79 | 14022 | { |
96408a79 SA |
14023 | struct dwarf2_cu *target_cu = cu; |
14024 | struct die_info *target_die; | |
14025 | ||
ac9ec31b | 14026 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 14027 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
14028 | if (die_is_declaration (target_die, target_cu)) |
14029 | { | |
7d45c7c3 | 14030 | const char *target_physname; |
9112db09 JK |
14031 | |
14032 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14033 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14034 | if (target_physname == NULL) |
9112db09 | 14035 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 14036 | if (target_physname == NULL) |
b98664d3 | 14037 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 14038 | "physname, for referencing DIE %s [in module %s]"), |
9d8780f0 | 14039 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 14040 | else |
7d455152 | 14041 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14042 | } |
14043 | else | |
14044 | { | |
14045 | CORE_ADDR lowpc; | |
14046 | ||
14047 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14048 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14049 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14050 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 14051 | "low pc, for referencing DIE %s [in module %s]"), |
9d8780f0 | 14052 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 14053 | else |
3e29f34a MR |
14054 | { |
14055 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14056 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14057 | } | |
96408a79 SA |
14058 | } |
14059 | } | |
14060 | else | |
b98664d3 | 14061 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14062 | "block nor reference, for DIE %s [in module %s]"), |
14063 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14064 | |
14065 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 14066 | call_site->per_objfile = per_objfile; |
96408a79 SA |
14067 | |
14068 | for (child_die = die->child; | |
14069 | child_die && child_die->tag; | |
436c571c | 14070 | child_die = child_die->sibling) |
96408a79 | 14071 | { |
96408a79 | 14072 | struct call_site_parameter *parameter; |
1788b2d3 | 14073 | struct attribute *loc, *origin; |
96408a79 | 14074 | |
216f72a1 | 14075 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 14076 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 SA |
14077 | { |
14078 | /* Already printed the complaint above. */ | |
14079 | continue; | |
14080 | } | |
14081 | ||
14082 | gdb_assert (call_site->parameter_count < nparams); | |
14083 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14084 | ||
1788b2d3 JK |
14085 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14086 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14087 | register is contained in DW_AT_call_value. */ |
96408a79 | 14088 | |
24c5c679 | 14089 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14090 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14091 | if (origin == NULL) | |
14092 | { | |
14093 | /* This was a pre-DWARF-5 GNU extension alias | |
14094 | for DW_AT_call_parameter. */ | |
14095 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14096 | } | |
cd6c91b4 | 14097 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 14098 | { |
1788b2d3 | 14099 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 14100 | |
0826b30a | 14101 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 14102 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
14103 | { |
14104 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14105 | binding can be done only inside one CU. Such referenced DIE | |
14106 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14107 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14108 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14109 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14110 | objfile_name (objfile)); |
d76b7dbc JK |
14111 | continue; |
14112 | } | |
9c541725 PA |
14113 | parameter->u.param_cu_off |
14114 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 14115 | } |
4fc6c0d5 | 14116 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 14117 | { |
b98664d3 | 14118 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14119 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14120 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14121 | continue; |
14122 | } | |
24c5c679 | 14123 | else |
96408a79 | 14124 | { |
9d2246fc TT |
14125 | struct dwarf_block *block = loc->as_block (); |
14126 | ||
24c5c679 | 14127 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9d2246fc | 14128 | (block->data, &block->data[block->size]); |
24c5c679 JK |
14129 | if (parameter->u.dwarf_reg != -1) |
14130 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9d2246fc TT |
14131 | else if (dwarf_block_to_sp_offset (gdbarch, block->data, |
14132 | &block->data[block->size], | |
24c5c679 JK |
14133 | ¶meter->u.fb_offset)) |
14134 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14135 | else | |
14136 | { | |
b98664d3 | 14137 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14138 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14139 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14140 | "[in module %s]"), |
9d8780f0 | 14141 | sect_offset_str (child_die->sect_off), |
9c541725 | 14142 | objfile_name (objfile)); |
24c5c679 JK |
14143 | continue; |
14144 | } | |
96408a79 SA |
14145 | } |
14146 | ||
216f72a1 JK |
14147 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14148 | if (attr == NULL) | |
14149 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 14150 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 14151 | { |
b98664d3 | 14152 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14153 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14154 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14155 | objfile_name (objfile)); |
96408a79 SA |
14156 | continue; |
14157 | } | |
9d2246fc TT |
14158 | |
14159 | struct dwarf_block *block = attr->as_block (); | |
14160 | parameter->value = block->data; | |
14161 | parameter->value_size = block->size; | |
96408a79 SA |
14162 | |
14163 | /* Parameters are not pre-cleared by memset above. */ | |
14164 | parameter->data_value = NULL; | |
14165 | parameter->data_value_size = 0; | |
14166 | call_site->parameter_count++; | |
14167 | ||
216f72a1 JK |
14168 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14169 | if (attr == NULL) | |
14170 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 14171 | if (attr != nullptr) |
96408a79 | 14172 | { |
4fc6c0d5 | 14173 | if (!attr->form_is_block ()) |
b98664d3 | 14174 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14175 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14176 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14177 | objfile_name (objfile)); |
96408a79 SA |
14178 | else |
14179 | { | |
9d2246fc TT |
14180 | block = attr->as_block (); |
14181 | parameter->data_value = block->data; | |
14182 | parameter->data_value_size = block->size; | |
96408a79 SA |
14183 | } |
14184 | } | |
14185 | } | |
14186 | } | |
14187 | ||
71a3c369 TT |
14188 | /* Helper function for read_variable. If DIE represents a virtual |
14189 | table, then return the type of the concrete object that is | |
14190 | associated with the virtual table. Otherwise, return NULL. */ | |
14191 | ||
14192 | static struct type * | |
14193 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14194 | { | |
14195 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14196 | if (attr == NULL) | |
14197 | return NULL; | |
14198 | ||
14199 | /* Find the type DIE. */ | |
14200 | struct die_info *type_die = NULL; | |
14201 | struct dwarf2_cu *type_cu = cu; | |
14202 | ||
cd6c91b4 | 14203 | if (attr->form_is_ref ()) |
71a3c369 TT |
14204 | type_die = follow_die_ref (die, attr, &type_cu); |
14205 | if (type_die == NULL) | |
14206 | return NULL; | |
14207 | ||
14208 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14209 | return NULL; | |
14210 | return die_containing_type (type_die, type_cu); | |
14211 | } | |
14212 | ||
14213 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14214 | ||
14215 | static void | |
14216 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14217 | { | |
14218 | struct rust_vtable_symbol *storage = NULL; | |
14219 | ||
14220 | if (cu->language == language_rust) | |
14221 | { | |
14222 | struct type *containing_type = rust_containing_type (die, cu); | |
14223 | ||
14224 | if (containing_type != NULL) | |
14225 | { | |
5e22e966 | 14226 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 14227 | |
8c14c3a3 | 14228 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 14229 | storage->concrete_type = containing_type; |
cf724bc9 | 14230 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14231 | } |
14232 | } | |
14233 | ||
e4a62c65 TV |
14234 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14235 | struct attribute *abstract_origin | |
14236 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14237 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14238 | if (res == NULL && loc && abstract_origin) | |
14239 | { | |
14240 | /* We have a variable without a name, but with a location and an abstract | |
14241 | origin. This may be a concrete instance of an abstract variable | |
14242 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14243 | later. */ | |
14244 | struct dwarf2_cu *origin_cu = cu; | |
14245 | struct die_info *origin_die | |
14246 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
14247 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14248 | per_objfile->per_bfd->abstract_to_concrete | |
14249 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 14250 | } |
71a3c369 TT |
14251 | } |
14252 | ||
43988095 JK |
14253 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14254 | reading .debug_rnglists. | |
14255 | Callback's type should be: | |
14256 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14257 | Return true if the attributes are present and valid, otherwise, | |
14258 | return false. */ | |
14259 | ||
14260 | template <typename Callback> | |
14261 | static bool | |
14262 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
d0ce17d8 | 14263 | dwarf_tag tag, Callback &&callback) |
43988095 | 14264 | { |
976ca316 SM |
14265 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14266 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 14267 | bfd *obfd = objfile->obfd; |
43988095 | 14268 | /* Base address selection entry. */ |
2b24b6e4 | 14269 | gdb::optional<CORE_ADDR> base; |
43988095 | 14270 | const gdb_byte *buffer; |
43988095 JK |
14271 | CORE_ADDR baseaddr; |
14272 | bool overflow = false; | |
d0ce17d8 CT |
14273 | ULONGEST addr_index; |
14274 | struct dwarf2_section_info *rnglists_section; | |
43988095 | 14275 | |
43988095 | 14276 | base = cu->base_address; |
d0ce17d8 CT |
14277 | rnglists_section = cu_debug_rnglists_section (cu, tag); |
14278 | rnglists_section->read (objfile); | |
43988095 | 14279 | |
d0ce17d8 | 14280 | if (offset >= rnglists_section->size) |
43988095 | 14281 | { |
b98664d3 | 14282 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14283 | offset); |
14284 | return false; | |
14285 | } | |
d0ce17d8 | 14286 | buffer = rnglists_section->buffer + offset; |
43988095 | 14287 | |
b3b3bada | 14288 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
14289 | |
14290 | while (1) | |
14291 | { | |
7814882a JK |
14292 | /* Initialize it due to a false compiler warning. */ |
14293 | CORE_ADDR range_beginning = 0, range_end = 0; | |
d0ce17d8 CT |
14294 | const gdb_byte *buf_end = (rnglists_section->buffer |
14295 | + rnglists_section->size); | |
43988095 JK |
14296 | unsigned int bytes_read; |
14297 | ||
14298 | if (buffer == buf_end) | |
14299 | { | |
14300 | overflow = true; | |
14301 | break; | |
14302 | } | |
14303 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14304 | switch (rlet) | |
14305 | { | |
14306 | case DW_RLE_end_of_list: | |
14307 | break; | |
14308 | case DW_RLE_base_address: | |
14309 | if (buffer + cu->header.addr_size > buf_end) | |
14310 | { | |
14311 | overflow = true; | |
14312 | break; | |
14313 | } | |
c8a7a66f | 14314 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14315 | buffer += bytes_read; |
14316 | break; | |
dda83cd7 SM |
14317 | case DW_RLE_base_addressx: |
14318 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14319 | buffer += bytes_read; | |
14320 | base = read_addr_index (cu, addr_index); | |
14321 | break; | |
43988095 JK |
14322 | case DW_RLE_start_length: |
14323 | if (buffer + cu->header.addr_size > buf_end) | |
14324 | { | |
14325 | overflow = true; | |
14326 | break; | |
14327 | } | |
c8a7a66f TT |
14328 | range_beginning = cu->header.read_address (obfd, buffer, |
14329 | &bytes_read); | |
43988095 JK |
14330 | buffer += bytes_read; |
14331 | range_end = (range_beginning | |
14332 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14333 | buffer += bytes_read; | |
14334 | if (buffer > buf_end) | |
14335 | { | |
14336 | overflow = true; | |
14337 | break; | |
14338 | } | |
14339 | break; | |
d0ce17d8 | 14340 | case DW_RLE_startx_length: |
dda83cd7 SM |
14341 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14342 | buffer += bytes_read; | |
14343 | range_beginning = read_addr_index (cu, addr_index); | |
14344 | if (buffer > buf_end) | |
14345 | { | |
14346 | overflow = true; | |
14347 | break; | |
14348 | } | |
14349 | range_end = (range_beginning | |
14350 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14351 | buffer += bytes_read; | |
14352 | break; | |
43988095 JK |
14353 | case DW_RLE_offset_pair: |
14354 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14355 | buffer += bytes_read; | |
14356 | if (buffer > buf_end) | |
14357 | { | |
14358 | overflow = true; | |
14359 | break; | |
14360 | } | |
14361 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14362 | buffer += bytes_read; | |
14363 | if (buffer > buf_end) | |
14364 | { | |
14365 | overflow = true; | |
14366 | break; | |
14367 | } | |
14368 | break; | |
14369 | case DW_RLE_start_end: | |
14370 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14371 | { | |
14372 | overflow = true; | |
14373 | break; | |
14374 | } | |
c8a7a66f TT |
14375 | range_beginning = cu->header.read_address (obfd, buffer, |
14376 | &bytes_read); | |
43988095 | 14377 | buffer += bytes_read; |
c8a7a66f | 14378 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14379 | buffer += bytes_read; |
14380 | break; | |
d0ce17d8 | 14381 | case DW_RLE_startx_endx: |
dda83cd7 SM |
14382 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14383 | buffer += bytes_read; | |
14384 | range_beginning = read_addr_index (cu, addr_index); | |
14385 | if (buffer > buf_end) | |
14386 | { | |
14387 | overflow = true; | |
14388 | break; | |
14389 | } | |
14390 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14391 | buffer += bytes_read; | |
14392 | range_end = read_addr_index (cu, addr_index); | |
14393 | break; | |
43988095 | 14394 | default: |
b98664d3 | 14395 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14396 | return false; |
14397 | } | |
14398 | if (rlet == DW_RLE_end_of_list || overflow) | |
14399 | break; | |
14400 | if (rlet == DW_RLE_base_address) | |
14401 | continue; | |
14402 | ||
43988095 JK |
14403 | if (range_beginning > range_end) |
14404 | { | |
14405 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14406 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14407 | return false; |
14408 | } | |
14409 | ||
14410 | /* Empty range entries have no effect. */ | |
14411 | if (range_beginning == range_end) | |
14412 | continue; | |
14413 | ||
d0ce17d8 CT |
14414 | /* Only DW_RLE_offset_pair needs the base address added. */ |
14415 | if (rlet == DW_RLE_offset_pair) | |
14416 | { | |
14417 | if (!base.has_value ()) | |
14418 | { | |
14419 | /* We have no valid base address for the DW_RLE_offset_pair. */ | |
14420 | complaint (_("Invalid .debug_rnglists data (no base address for " | |
14421 | "DW_RLE_offset_pair)")); | |
14422 | return false; | |
14423 | } | |
14424 | ||
14425 | range_beginning += *base; | |
14426 | range_end += *base; | |
14427 | } | |
43988095 JK |
14428 | |
14429 | /* A not-uncommon case of bad debug info. | |
14430 | Don't pollute the addrmap with bad data. */ | |
14431 | if (range_beginning + baseaddr == 0 | |
976ca316 | 14432 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 14433 | { |
b98664d3 | 14434 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14435 | " [in module %s]"), objfile_name (objfile)); |
14436 | continue; | |
14437 | } | |
14438 | ||
14439 | callback (range_beginning, range_end); | |
14440 | } | |
14441 | ||
14442 | if (overflow) | |
14443 | { | |
b98664d3 | 14444 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14445 | "for DW_AT_ranges attribute"), |
14446 | offset); | |
14447 | return false; | |
14448 | } | |
14449 | ||
14450 | return true; | |
14451 | } | |
14452 | ||
14453 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14454 | Callback's type should be: | |
14455 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14456 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14457 | |
43988095 | 14458 | template <typename Callback> |
43039443 | 14459 | static int |
d0ce17d8 | 14460 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag, |
43988095 | 14461 | Callback &&callback) |
43039443 | 14462 | { |
5e22e966 SM |
14463 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14464 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
14465 | struct comp_unit_head *cu_header = &cu->header; |
14466 | bfd *obfd = objfile->obfd; | |
14467 | unsigned int addr_size = cu_header->addr_size; | |
14468 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14469 | /* Base address selection entry. */ | |
2b24b6e4 | 14470 | gdb::optional<CORE_ADDR> base; |
43039443 | 14471 | unsigned int dummy; |
d521ce57 | 14472 | const gdb_byte *buffer; |
ff013f42 | 14473 | CORE_ADDR baseaddr; |
43039443 | 14474 | |
43988095 | 14475 | if (cu_header->version >= 5) |
d0ce17d8 | 14476 | return dwarf2_rnglists_process (offset, cu, tag, callback); |
43988095 | 14477 | |
d00adf39 | 14478 | base = cu->base_address; |
43039443 | 14479 | |
5e22e966 SM |
14480 | per_objfile->per_bfd->ranges.read (objfile); |
14481 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 14482 | { |
b98664d3 | 14483 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14484 | offset); |
14485 | return 0; | |
14486 | } | |
5e22e966 | 14487 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 14488 | |
b3b3bada | 14489 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14490 | |
43039443 JK |
14491 | while (1) |
14492 | { | |
14493 | CORE_ADDR range_beginning, range_end; | |
14494 | ||
c8a7a66f | 14495 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 14496 | buffer += addr_size; |
c8a7a66f | 14497 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
14498 | buffer += addr_size; |
14499 | offset += 2 * addr_size; | |
14500 | ||
14501 | /* An end of list marker is a pair of zero addresses. */ | |
14502 | if (range_beginning == 0 && range_end == 0) | |
14503 | /* Found the end of list entry. */ | |
14504 | break; | |
14505 | ||
14506 | /* Each base address selection entry is a pair of 2 values. | |
14507 | The first is the largest possible address, the second is | |
14508 | the base address. Check for a base address here. */ | |
14509 | if ((range_beginning & mask) == mask) | |
14510 | { | |
28d2bfb9 AB |
14511 | /* If we found the largest possible address, then we already |
14512 | have the base address in range_end. */ | |
14513 | base = range_end; | |
43039443 JK |
14514 | continue; |
14515 | } | |
14516 | ||
2b24b6e4 | 14517 | if (!base.has_value ()) |
43039443 JK |
14518 | { |
14519 | /* We have no valid base address for the ranges | |
14520 | data. */ | |
b98664d3 | 14521 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14522 | return 0; |
14523 | } | |
14524 | ||
9277c30c UW |
14525 | if (range_beginning > range_end) |
14526 | { | |
14527 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14528 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14529 | return 0; |
14530 | } | |
14531 | ||
14532 | /* Empty range entries have no effect. */ | |
14533 | if (range_beginning == range_end) | |
14534 | continue; | |
14535 | ||
2b24b6e4 TT |
14536 | range_beginning += *base; |
14537 | range_end += *base; | |
43039443 | 14538 | |
01093045 DE |
14539 | /* A not-uncommon case of bad debug info. |
14540 | Don't pollute the addrmap with bad data. */ | |
14541 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14542 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14543 | { |
b98664d3 | 14544 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14545 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14546 | continue; |
14547 | } | |
14548 | ||
5f46c5a5 JK |
14549 | callback (range_beginning, range_end); |
14550 | } | |
14551 | ||
14552 | return 1; | |
14553 | } | |
14554 | ||
14555 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14556 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14557 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14558 | ||
14559 | static int | |
14560 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14561 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
d0ce17d8 | 14562 | dwarf2_psymtab *ranges_pst, dwarf_tag tag) |
5f46c5a5 | 14563 | { |
5e22e966 | 14564 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14565 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14566 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14567 | int low_set = 0; |
14568 | CORE_ADDR low = 0; | |
14569 | CORE_ADDR high = 0; | |
14570 | int retval; | |
14571 | ||
d0ce17d8 | 14572 | retval = dwarf2_ranges_process (offset, cu, tag, |
5f46c5a5 JK |
14573 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) |
14574 | { | |
9277c30c | 14575 | if (ranges_pst != NULL) |
3e29f34a MR |
14576 | { |
14577 | CORE_ADDR lowpc; | |
14578 | CORE_ADDR highpc; | |
14579 | ||
79748972 TT |
14580 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14581 | range_beginning + baseaddr) | |
14582 | - baseaddr); | |
14583 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14584 | range_end + baseaddr) | |
14585 | - baseaddr); | |
d320c2b5 TT |
14586 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14587 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14588 | } |
ff013f42 | 14589 | |
43039443 JK |
14590 | /* FIXME: This is recording everything as a low-high |
14591 | segment of consecutive addresses. We should have a | |
14592 | data structure for discontiguous block ranges | |
14593 | instead. */ | |
14594 | if (! low_set) | |
14595 | { | |
14596 | low = range_beginning; | |
14597 | high = range_end; | |
14598 | low_set = 1; | |
14599 | } | |
14600 | else | |
14601 | { | |
14602 | if (range_beginning < low) | |
14603 | low = range_beginning; | |
14604 | if (range_end > high) | |
14605 | high = range_end; | |
14606 | } | |
5f46c5a5 JK |
14607 | }); |
14608 | if (!retval) | |
14609 | return 0; | |
43039443 JK |
14610 | |
14611 | if (! low_set) | |
14612 | /* If the first entry is an end-of-list marker, the range | |
14613 | describes an empty scope, i.e. no instructions. */ | |
14614 | return 0; | |
14615 | ||
14616 | if (low_return) | |
14617 | *low_return = low; | |
14618 | if (high_return) | |
14619 | *high_return = high; | |
14620 | return 1; | |
14621 | } | |
14622 | ||
3a2b436a JK |
14623 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14624 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14625 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14626 | |
3a2b436a | 14627 | static enum pc_bounds_kind |
af34e669 | 14628 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14629 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14630 | dwarf2_psymtab *pst) |
c906108c | 14631 | { |
976ca316 | 14632 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14633 | struct attribute *attr; |
91da1414 | 14634 | struct attribute *attr_high; |
af34e669 DJ |
14635 | CORE_ADDR low = 0; |
14636 | CORE_ADDR high = 0; | |
e385593e | 14637 | enum pc_bounds_kind ret; |
c906108c | 14638 | |
91da1414 MW |
14639 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14640 | if (attr_high) | |
af34e669 | 14641 | { |
e142c38c | 14642 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14643 | if (attr != nullptr) |
dda83cd7 | 14644 | { |
95f982e5 TT |
14645 | low = attr->as_address (); |
14646 | high = attr_high->as_address (); | |
cd6c91b4 | 14647 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14648 | high += low; |
91da1414 | 14649 | } |
af34e669 DJ |
14650 | else |
14651 | /* Found high w/o low attribute. */ | |
e385593e | 14652 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14653 | |
14654 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14655 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14656 | } |
c906108c | 14657 | else |
af34e669 | 14658 | { |
e142c38c | 14659 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
529908cb | 14660 | if (attr != nullptr && attr->form_is_unsigned ()) |
af34e669 | 14661 | { |
18a8505e | 14662 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 | 14663 | We take advantage of the fact that DW_AT_ranges does not appear |
d0ce17d8 CT |
14664 | in DW_TAG_compile_unit of DWO files. |
14665 | ||
14666 | Attributes of the form DW_FORM_rnglistx have already had their | |
14667 | value changed by read_rnglist_index and already include | |
14668 | DW_AT_rnglists_base, so don't need to add the ranges base, | |
14669 | either. */ | |
14670 | int need_ranges_base = (die->tag != DW_TAG_compile_unit | |
14671 | && attr->form != DW_FORM_rnglistx); | |
529908cb | 14672 | unsigned int ranges_offset = (attr->as_unsigned () |
ab435259 DE |
14673 | + (need_ranges_base |
14674 | ? cu->ranges_base | |
14675 | : 0)); | |
2e3cf129 | 14676 | |
af34e669 | 14677 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14678 | .debug_ranges section. */ |
d0ce17d8 CT |
14679 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst, |
14680 | die->tag)) | |
e385593e | 14681 | return PC_BOUNDS_INVALID; |
43039443 | 14682 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14683 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14684 | } |
e385593e JK |
14685 | else |
14686 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14687 | } |
c906108c | 14688 | |
48fbe735 | 14689 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14690 | if (high <= low) |
e385593e | 14691 | return PC_BOUNDS_INVALID; |
c906108c SS |
14692 | |
14693 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14694 | eliminate duplicate copies of functions and vtables and such. | |
14695 | The linker will arbitrarily choose one and discard the others. | |
14696 | The AT_*_pc values for such functions refer to local labels in | |
14697 | these sections. If the section from that file was discarded, the | |
14698 | labels are not in the output, so the relocs get a value of 0. | |
14699 | If this is a discarded function, mark the pc bounds as invalid, | |
14700 | so that GDB will ignore it. */ | |
976ca316 | 14701 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14702 | return PC_BOUNDS_INVALID; |
c906108c SS |
14703 | |
14704 | *lowpc = low; | |
96408a79 SA |
14705 | if (highpc) |
14706 | *highpc = high; | |
af34e669 | 14707 | return ret; |
c906108c SS |
14708 | } |
14709 | ||
b084d499 JB |
14710 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14711 | its low and high PC addresses. Do nothing if these addresses could not | |
14712 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14713 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14714 | ||
14715 | static void | |
14716 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
dda83cd7 SM |
14717 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
14718 | struct dwarf2_cu *cu) | |
b084d499 JB |
14719 | { |
14720 | CORE_ADDR low, high; | |
14721 | struct die_info *child = die->child; | |
14722 | ||
e385593e | 14723 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14724 | { |
325fac50 PA |
14725 | *lowpc = std::min (*lowpc, low); |
14726 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14727 | } |
14728 | ||
14729 | /* If the language does not allow nested subprograms (either inside | |
14730 | subprograms or lexical blocks), we're done. */ | |
14731 | if (cu->language != language_ada) | |
14732 | return; | |
6e70227d | 14733 | |
b084d499 JB |
14734 | /* Check all the children of the given DIE. If it contains nested |
14735 | subprograms, then check their pc bounds. Likewise, we need to | |
14736 | check lexical blocks as well, as they may also contain subprogram | |
14737 | definitions. */ | |
14738 | while (child && child->tag) | |
14739 | { | |
14740 | if (child->tag == DW_TAG_subprogram | |
dda83cd7 SM |
14741 | || child->tag == DW_TAG_lexical_block) |
14742 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14743 | child = child->sibling; |
b084d499 JB |
14744 | } |
14745 | } | |
14746 | ||
fae299cd DC |
14747 | /* Get the low and high pc's represented by the scope DIE, and store |
14748 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14749 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14750 | ||
14751 | static void | |
14752 | get_scope_pc_bounds (struct die_info *die, | |
14753 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14754 | struct dwarf2_cu *cu) | |
14755 | { | |
14756 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14757 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14758 | CORE_ADDR current_low, current_high; | |
14759 | ||
3a2b436a | 14760 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14761 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14762 | { |
14763 | best_low = current_low; | |
14764 | best_high = current_high; | |
14765 | } | |
14766 | else | |
14767 | { | |
14768 | struct die_info *child = die->child; | |
14769 | ||
14770 | while (child && child->tag) | |
14771 | { | |
14772 | switch (child->tag) { | |
14773 | case DW_TAG_subprogram: | |
dda83cd7 | 14774 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14775 | break; |
14776 | case DW_TAG_namespace: | |
f55ee35c | 14777 | case DW_TAG_module: |
fae299cd DC |
14778 | /* FIXME: carlton/2004-01-16: Should we do this for |
14779 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14780 | that current GCC's always emit the DIEs corresponding | |
14781 | to definitions of methods of classes as children of a | |
14782 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14783 | the DIEs giving the declarations, which could be | |
14784 | anywhere). But I don't see any reason why the | |
14785 | standards says that they have to be there. */ | |
14786 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14787 | ||
14788 | if (current_low != ((CORE_ADDR) -1)) | |
14789 | { | |
325fac50 PA |
14790 | best_low = std::min (best_low, current_low); |
14791 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14792 | } |
14793 | break; | |
14794 | default: | |
0963b4bd | 14795 | /* Ignore. */ |
fae299cd DC |
14796 | break; |
14797 | } | |
14798 | ||
436c571c | 14799 | child = child->sibling; |
fae299cd DC |
14800 | } |
14801 | } | |
14802 | ||
14803 | *lowpc = best_low; | |
14804 | *highpc = best_high; | |
14805 | } | |
14806 | ||
801e3a5b JB |
14807 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14808 | in DIE. */ | |
380bca97 | 14809 | |
801e3a5b JB |
14810 | static void |
14811 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
dda83cd7 | 14812 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) |
801e3a5b | 14813 | { |
5e22e966 | 14814 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14815 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14816 | struct attribute *attr; |
91da1414 | 14817 | struct attribute *attr_high; |
801e3a5b | 14818 | |
91da1414 MW |
14819 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14820 | if (attr_high) | |
801e3a5b | 14821 | { |
801e3a5b | 14822 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14823 | if (attr != nullptr) |
dda83cd7 | 14824 | { |
95f982e5 TT |
14825 | CORE_ADDR low = attr->as_address (); |
14826 | CORE_ADDR high = attr_high->as_address (); | |
31aa7e4e | 14827 | |
cd6c91b4 | 14828 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14829 | high += low; |
9a619af0 | 14830 | |
3e29f34a MR |
14831 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14832 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14833 | cu->get_builder ()->record_block_range (block, low, high - 1); |
dda83cd7 | 14834 | } |
801e3a5b JB |
14835 | } |
14836 | ||
14837 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
529908cb | 14838 | if (attr != nullptr && attr->form_is_unsigned ()) |
801e3a5b | 14839 | { |
18a8505e | 14840 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 | 14841 | We take advantage of the fact that DW_AT_ranges does not appear |
d0ce17d8 CT |
14842 | in DW_TAG_compile_unit of DWO files. |
14843 | ||
14844 | Attributes of the form DW_FORM_rnglistx have already had their | |
14845 | value changed by read_rnglist_index and already include | |
14846 | DW_AT_rnglists_base, so don't need to add the ranges base, | |
14847 | either. */ | |
14848 | int need_ranges_base = (die->tag != DW_TAG_compile_unit | |
14849 | && attr->form != DW_FORM_rnglistx); | |
801e3a5b JB |
14850 | |
14851 | /* The value of the DW_AT_ranges attribute is the offset of the | |
dda83cd7 | 14852 | address range list in the .debug_ranges section. */ |
529908cb | 14853 | unsigned long offset = (attr->as_unsigned () |
ab435259 | 14854 | + (need_ranges_base ? cu->ranges_base : 0)); |
801e3a5b | 14855 | |
2d5f09ec | 14856 | std::vector<blockrange> blockvec; |
d0ce17d8 | 14857 | dwarf2_ranges_process (offset, cu, die->tag, |
5f46c5a5 JK |
14858 | [&] (CORE_ADDR start, CORE_ADDR end) |
14859 | { | |
58fdfd2c JK |
14860 | start += baseaddr; |
14861 | end += baseaddr; | |
5f46c5a5 JK |
14862 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14863 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14864 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14865 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14866 | }); |
2d5f09ec KB |
14867 | |
14868 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14869 | } |
14870 | } | |
14871 | ||
685b1105 JK |
14872 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14873 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14874 | |
685b1105 JK |
14875 | static void |
14876 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14877 | { |
38360086 | 14878 | int major, minor; |
60d5a603 JK |
14879 | |
14880 | if (cu->producer == NULL) | |
14881 | { | |
14882 | /* For unknown compilers expect their behavior is DWARF version | |
14883 | compliant. | |
14884 | ||
14885 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14886 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14887 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14888 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14889 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14890 | } |
b1ffba5a | 14891 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14892 | { |
38360086 MW |
14893 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14894 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14895 | } |
5230b05a | 14896 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14897 | { |
14898 | cu->producer_is_icc = true; | |
14899 | cu->producer_is_icc_lt_14 = major < 14; | |
14900 | } | |
c258c396 JD |
14901 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14902 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14903 | else |
14904 | { | |
14905 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14906 | compliant. */ | |
60d5a603 JK |
14907 | } |
14908 | ||
9068261f | 14909 | cu->checked_producer = true; |
685b1105 | 14910 | } |
ba919b58 | 14911 | |
685b1105 JK |
14912 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14913 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14914 | during 4.6.0 experimental. */ | |
14915 | ||
9068261f | 14916 | static bool |
685b1105 JK |
14917 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14918 | { | |
14919 | if (!cu->checked_producer) | |
14920 | check_producer (cu); | |
14921 | ||
14922 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14923 | } |
14924 | ||
c258c396 JD |
14925 | |
14926 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14927 | with incorrect is_stmt attributes. */ | |
14928 | ||
14929 | static bool | |
14930 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14931 | { | |
14932 | if (!cu->checked_producer) | |
14933 | check_producer (cu); | |
14934 | ||
14935 | return cu->producer_is_codewarrior; | |
14936 | } | |
14937 | ||
bf23a268 TT |
14938 | /* Return the accessibility of DIE, as given by DW_AT_accessibility. |
14939 | If that attribute is not available, return the appropriate | |
14940 | default. */ | |
60d5a603 JK |
14941 | |
14942 | static enum dwarf_access_attribute | |
bf23a268 | 14943 | dwarf2_access_attribute (struct die_info *die, struct dwarf2_cu *cu) |
60d5a603 | 14944 | { |
bf23a268 TT |
14945 | attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
14946 | if (attr != nullptr) | |
14947 | { | |
14948 | LONGEST value = attr->constant_value (-1); | |
14949 | if (value == DW_ACCESS_public | |
14950 | || value == DW_ACCESS_protected | |
14951 | || value == DW_ACCESS_private) | |
14952 | return (dwarf_access_attribute) value; | |
14953 | complaint (_("Unhandled DW_AT_accessibility value (%s)"), | |
14954 | plongest (value)); | |
14955 | } | |
14956 | ||
60d5a603 JK |
14957 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) |
14958 | { | |
14959 | /* The default DWARF 2 accessibility for members is public, the default | |
14960 | accessibility for inheritance is private. */ | |
14961 | ||
14962 | if (die->tag != DW_TAG_inheritance) | |
14963 | return DW_ACCESS_public; | |
14964 | else | |
14965 | return DW_ACCESS_private; | |
14966 | } | |
14967 | else | |
14968 | { | |
14969 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14970 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14971 | depends on the container kind. */ | |
14972 | ||
14973 | if (die->parent->tag == DW_TAG_class_type) | |
14974 | return DW_ACCESS_private; | |
14975 | else | |
14976 | return DW_ACCESS_public; | |
14977 | } | |
14978 | } | |
14979 | ||
74ac6d43 TT |
14980 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14981 | offset. If the attribute was not found return 0, otherwise return | |
14982 | 1. If it was found but could not properly be handled, set *OFFSET | |
14983 | to 0. */ | |
14984 | ||
14985 | static int | |
14986 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14987 | LONGEST *offset) | |
14988 | { | |
14989 | struct attribute *attr; | |
14990 | ||
14991 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14992 | if (attr != NULL) | |
14993 | { | |
14994 | *offset = 0; | |
14995 | ||
14996 | /* Note that we do not check for a section offset first here. | |
14997 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14998 | so if we see it, we can assume that a constant form is really | |
14999 | a constant and not a section offset. */ | |
cd6c91b4 | 15000 | if (attr->form_is_constant ()) |
0826b30a | 15001 | *offset = attr->constant_value (0); |
cd6c91b4 | 15002 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 15003 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 15004 | else if (attr->form_is_block ()) |
9d2246fc | 15005 | *offset = decode_locdesc (attr->as_block (), cu); |
74ac6d43 TT |
15006 | else |
15007 | dwarf2_complex_location_expr_complaint (); | |
15008 | ||
15009 | return 1; | |
15010 | } | |
15011 | ||
15012 | return 0; | |
15013 | } | |
15014 | ||
7d79de9a TT |
15015 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
15016 | ||
15017 | static void | |
15018 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
15019 | struct field *field) | |
15020 | { | |
15021 | struct attribute *attr; | |
15022 | ||
15023 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
15024 | if (attr != NULL) | |
15025 | { | |
15026 | if (attr->form_is_constant ()) | |
15027 | { | |
15028 | LONGEST offset = attr->constant_value (0); | |
15029 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
15030 | } | |
15031 | else if (attr->form_is_section_offset ()) | |
15032 | dwarf2_complex_location_expr_complaint (); | |
15033 | else if (attr->form_is_block ()) | |
15034 | { | |
15035 | bool handled; | |
9d2246fc | 15036 | CORE_ADDR offset = decode_locdesc (attr->as_block (), cu, &handled); |
7d79de9a TT |
15037 | if (handled) |
15038 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
15039 | else | |
15040 | { | |
5e22e966 SM |
15041 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
15042 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
15043 | struct dwarf2_locexpr_baton *dlbaton |
15044 | = XOBNEW (&objfile->objfile_obstack, | |
15045 | struct dwarf2_locexpr_baton); | |
9d2246fc TT |
15046 | dlbaton->data = attr->as_block ()->data; |
15047 | dlbaton->size = attr->as_block ()->size; | |
7d79de9a TT |
15048 | /* When using this baton, we want to compute the address |
15049 | of the field, not the value. This is why | |
15050 | is_reference is set to false here. */ | |
15051 | dlbaton->is_reference = false; | |
5e22e966 | 15052 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
15053 | dlbaton->per_cu = cu->per_cu; |
15054 | ||
15055 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
15056 | } | |
15057 | } | |
15058 | else | |
15059 | dwarf2_complex_location_expr_complaint (); | |
15060 | } | |
15061 | } | |
15062 | ||
c906108c SS |
15063 | /* Add an aggregate field to the field list. */ |
15064 | ||
15065 | static void | |
107d2387 | 15066 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15067 | struct dwarf2_cu *cu) |
6e70227d | 15068 | { |
5e22e966 | 15069 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 15070 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
15071 | struct nextfield *new_field; |
15072 | struct attribute *attr; | |
15073 | struct field *fp; | |
15d034d0 | 15074 | const char *fieldname = ""; |
c906108c | 15075 | |
7d0ccb61 DJ |
15076 | if (die->tag == DW_TAG_inheritance) |
15077 | { | |
be2daae6 TT |
15078 | fip->baseclasses.emplace_back (); |
15079 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15080 | } |
15081 | else | |
15082 | { | |
be2daae6 TT |
15083 | fip->fields.emplace_back (); |
15084 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15085 | } |
be2daae6 | 15086 | |
9c6a1327 TT |
15087 | new_field->offset = die->sect_off; |
15088 | ||
bf23a268 | 15089 | new_field->accessibility = dwarf2_access_attribute (die, cu); |
c906108c | 15090 | if (new_field->accessibility != DW_ACCESS_public) |
264fc0e2 | 15091 | fip->non_public_fields = true; |
60d5a603 | 15092 | |
e142c38c | 15093 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 15094 | if (attr != nullptr) |
23dca5c3 | 15095 | new_field->virtuality = attr->as_virtuality (); |
60d5a603 JK |
15096 | else |
15097 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15098 | |
15099 | fp = &new_field->field; | |
a9a9bd0f | 15100 | |
e142c38c | 15101 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15102 | { |
a9a9bd0f | 15103 | /* Data member other than a C++ static data member. */ |
6e70227d | 15104 | |
c906108c | 15105 | /* Get type of field. */ |
5d14b6e5 | 15106 | fp->set_type (die_type (die, cu)); |
c906108c | 15107 | |
d6a843b5 | 15108 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15109 | |
c906108c | 15110 | /* Get bit size of field (zero if none). */ |
e142c38c | 15111 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 15112 | if (attr != nullptr) |
c906108c | 15113 | { |
529908cb | 15114 | FIELD_BITSIZE (*fp) = attr->constant_value (0); |
c906108c SS |
15115 | } |
15116 | else | |
15117 | { | |
15118 | FIELD_BITSIZE (*fp) = 0; | |
15119 | } | |
15120 | ||
15121 | /* Get bit offset of field. */ | |
7d79de9a | 15122 | handle_data_member_location (die, cu, fp); |
e142c38c | 15123 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
7c184d33 | 15124 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c | 15125 | { |
d5a22e77 | 15126 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
15127 | { |
15128 | /* For big endian bits, the DW_AT_bit_offset gives the | |
dda83cd7 SM |
15129 | additional bit offset from the MSB of the containing |
15130 | anonymous object to the MSB of the field. We don't | |
15131 | have to do anything special since we don't need to | |
15132 | know the size of the anonymous object. */ | |
529908cb | 15133 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) |
7c184d33 | 15134 | + attr->constant_value (0))); |
c906108c SS |
15135 | } |
15136 | else | |
15137 | { | |
15138 | /* For little endian bits, compute the bit offset to the | |
dda83cd7 SM |
15139 | MSB of the anonymous object, subtract off the number of |
15140 | bits from the MSB of the field to the MSB of the | |
15141 | object, and then subtract off the number of bits of | |
15142 | the field itself. The result is the bit offset of | |
15143 | the LSB of the field. */ | |
c906108c | 15144 | int anonymous_size; |
7c184d33 | 15145 | int bit_offset = attr->constant_value (0); |
c906108c | 15146 | |
e142c38c | 15147 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
7c184d33 | 15148 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c SS |
15149 | { |
15150 | /* The size of the anonymous object containing | |
15151 | the bit field is explicit, so use the | |
15152 | indicated size (in bytes). */ | |
7c184d33 | 15153 | anonymous_size = attr->constant_value (0); |
c906108c SS |
15154 | } |
15155 | else | |
15156 | { | |
15157 | /* The size of the anonymous object containing | |
15158 | the bit field must be inferred from the type | |
15159 | attribute of the data member containing the | |
15160 | bit field. */ | |
5d14b6e5 | 15161 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 15162 | } |
f41f5e61 PA |
15163 | SET_FIELD_BITPOS (*fp, |
15164 | (FIELD_BITPOS (*fp) | |
15165 | + anonymous_size * bits_per_byte | |
15166 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15167 | } |
15168 | } | |
da5b30da AA |
15169 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15170 | if (attr != NULL) | |
15171 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 15172 | + attr->constant_value (0))); |
c906108c SS |
15173 | |
15174 | /* Get name of field. */ | |
39cbfefa DJ |
15175 | fieldname = dwarf2_name (die, cu); |
15176 | if (fieldname == NULL) | |
15177 | fieldname = ""; | |
d8151005 DJ |
15178 | |
15179 | /* The name is already allocated along with this objfile, so we don't | |
15180 | need to duplicate it for the type. */ | |
15181 | fp->name = fieldname; | |
c906108c SS |
15182 | |
15183 | /* Change accessibility for artificial fields (e.g. virtual table | |
dda83cd7 | 15184 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15185 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15186 | { |
d48cc9dd | 15187 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c | 15188 | new_field->accessibility = DW_ACCESS_private; |
264fc0e2 | 15189 | fip->non_public_fields = true; |
c906108c SS |
15190 | } |
15191 | } | |
a9a9bd0f | 15192 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15193 | { |
a9a9bd0f DC |
15194 | /* C++ static member. */ |
15195 | ||
15196 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15197 | is a declaration, but all versions of G++ as of this writing | |
15198 | (so through at least 3.2.1) incorrectly generate | |
15199 | DW_TAG_variable tags. */ | |
6e70227d | 15200 | |
ff355380 | 15201 | const char *physname; |
c906108c | 15202 | |
a9a9bd0f | 15203 | /* Get name of field. */ |
39cbfefa DJ |
15204 | fieldname = dwarf2_name (die, cu); |
15205 | if (fieldname == NULL) | |
c906108c SS |
15206 | return; |
15207 | ||
254e6b9e | 15208 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15209 | if (attr |
15210 | /* Only create a symbol if this is an external value. | |
15211 | new_symbol checks this and puts the value in the global symbol | |
15212 | table, which we want. If it is not external, new_symbol | |
15213 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15214 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15215 | { |
15216 | /* A static const member, not much different than an enum as far as | |
15217 | we're concerned, except that we can support more types. */ | |
15218 | new_symbol (die, NULL, cu); | |
15219 | } | |
15220 | ||
2df3850c | 15221 | /* Get physical name. */ |
ff355380 | 15222 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15223 | |
d8151005 DJ |
15224 | /* The name is already allocated along with this objfile, so we don't |
15225 | need to duplicate it for the type. */ | |
15226 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 15227 | fp->set_type (die_type (die, cu)); |
d8151005 | 15228 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15229 | } |
15230 | else if (die->tag == DW_TAG_inheritance) | |
15231 | { | |
74ac6d43 | 15232 | /* C++ base class field. */ |
7d79de9a | 15233 | handle_data_member_location (die, cu, fp); |
c906108c | 15234 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
15235 | fp->set_type (die_type (die, cu)); |
15236 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 15237 | } |
2ddeaf8a TT |
15238 | else |
15239 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15240 | } |
15241 | ||
883fd55a KS |
15242 | /* Can the type given by DIE define another type? */ |
15243 | ||
15244 | static bool | |
15245 | type_can_define_types (const struct die_info *die) | |
15246 | { | |
15247 | switch (die->tag) | |
15248 | { | |
15249 | case DW_TAG_typedef: | |
15250 | case DW_TAG_class_type: | |
15251 | case DW_TAG_structure_type: | |
15252 | case DW_TAG_union_type: | |
15253 | case DW_TAG_enumeration_type: | |
15254 | return true; | |
15255 | ||
15256 | default: | |
15257 | return false; | |
15258 | } | |
15259 | } | |
15260 | ||
15261 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15262 | |
15263 | static void | |
883fd55a KS |
15264 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15265 | struct dwarf2_cu *cu) | |
6e70227d | 15266 | { |
be2daae6 TT |
15267 | struct decl_field fp; |
15268 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15269 | |
883fd55a | 15270 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15271 | |
883fd55a | 15272 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15273 | fp.name = dwarf2_name (die, cu); |
15274 | fp.type = read_type_die (die, cu); | |
98751a41 | 15275 | |
c191a687 | 15276 | /* Save accessibility. */ |
bf23a268 | 15277 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
c191a687 KS |
15278 | switch (accessibility) |
15279 | { | |
15280 | case DW_ACCESS_public: | |
15281 | /* The assumed value if neither private nor protected. */ | |
15282 | break; | |
15283 | case DW_ACCESS_private: | |
be2daae6 | 15284 | fp.is_private = 1; |
c191a687 KS |
15285 | break; |
15286 | case DW_ACCESS_protected: | |
be2daae6 | 15287 | fp.is_protected = 1; |
c191a687 | 15288 | break; |
c191a687 KS |
15289 | } |
15290 | ||
883fd55a | 15291 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15292 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15293 | else |
be2daae6 | 15294 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15295 | } |
15296 | ||
9c6a1327 TT |
15297 | /* A convenience typedef that's used when finding the discriminant |
15298 | field for a variant part. */ | |
1b95cdb7 SM |
15299 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
15300 | offset_map_type; | |
9c6a1327 TT |
15301 | |
15302 | /* Compute the discriminant range for a given variant. OBSTACK is | |
15303 | where the results will be stored. VARIANT is the variant to | |
15304 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
15305 | or unsigned. */ | |
15306 | ||
15307 | static const gdb::array_view<discriminant_range> | |
15308 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
15309 | bool is_unsigned) | |
15310 | { | |
15311 | std::vector<discriminant_range> ranges; | |
15312 | ||
15313 | if (variant.default_branch) | |
15314 | return {}; | |
15315 | ||
15316 | if (variant.discr_list_data == nullptr) | |
15317 | { | |
15318 | discriminant_range r | |
15319 | = {variant.discriminant_value, variant.discriminant_value}; | |
15320 | ranges.push_back (r); | |
15321 | } | |
15322 | else | |
15323 | { | |
15324 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
15325 | variant.discr_list_data->size); | |
15326 | while (!data.empty ()) | |
15327 | { | |
15328 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
15329 | { | |
15330 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
15331 | break; | |
15332 | } | |
15333 | bool is_range = data[0] == DW_DSC_range; | |
15334 | data = data.slice (1); | |
15335 | ||
15336 | ULONGEST low, high; | |
15337 | unsigned int bytes_read; | |
15338 | ||
15339 | if (data.empty ()) | |
15340 | { | |
15341 | complaint (_("DW_AT_discr_list missing low value")); | |
15342 | break; | |
15343 | } | |
15344 | if (is_unsigned) | |
15345 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
15346 | else | |
15347 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
15348 | &bytes_read); | |
15349 | data = data.slice (bytes_read); | |
15350 | ||
15351 | if (is_range) | |
15352 | { | |
15353 | if (data.empty ()) | |
15354 | { | |
15355 | complaint (_("DW_AT_discr_list missing high value")); | |
15356 | break; | |
15357 | } | |
15358 | if (is_unsigned) | |
15359 | high = read_unsigned_leb128 (nullptr, data.data (), | |
15360 | &bytes_read); | |
15361 | else | |
15362 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
15363 | &bytes_read); | |
15364 | data = data.slice (bytes_read); | |
15365 | } | |
15366 | else | |
15367 | high = low; | |
15368 | ||
15369 | ranges.push_back ({ low, high }); | |
15370 | } | |
15371 | } | |
15372 | ||
15373 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
15374 | ranges.size ()); | |
15375 | std::copy (ranges.begin (), ranges.end (), result); | |
15376 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
15377 | } | |
15378 | ||
15379 | static const gdb::array_view<variant_part> create_variant_parts | |
15380 | (struct obstack *obstack, | |
15381 | const offset_map_type &offset_map, | |
15382 | struct field_info *fi, | |
15383 | const std::vector<variant_part_builder> &variant_parts); | |
15384 | ||
15385 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
15386 | the variant to fill in. OBSTACK is where any needed allocations | |
15387 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
15388 | fields for the type. FI describes the fields of the type we're | |
15389 | processing. FIELD is the variant field we're converting. */ | |
15390 | ||
15391 | static void | |
15392 | create_one_variant (variant &result, struct obstack *obstack, | |
15393 | const offset_map_type &offset_map, | |
15394 | struct field_info *fi, const variant_field &field) | |
15395 | { | |
15396 | result.discriminants = convert_variant_range (obstack, field, false); | |
15397 | result.first_field = field.first_field + fi->baseclasses.size (); | |
15398 | result.last_field = field.last_field + fi->baseclasses.size (); | |
15399 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
15400 | field.variant_parts); | |
15401 | } | |
15402 | ||
15403 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
15404 | is the variant part to fill in. OBSTACK is where any needed | |
15405 | allocations will be done. OFFSET_MAP holds the mapping from | |
15406 | section offsets to fields for the type. FI describes the fields of | |
15407 | the type we're processing. BUILDER is the variant part to be | |
15408 | converted. */ | |
15409 | ||
15410 | static void | |
15411 | create_one_variant_part (variant_part &result, | |
15412 | struct obstack *obstack, | |
15413 | const offset_map_type &offset_map, | |
15414 | struct field_info *fi, | |
15415 | const variant_part_builder &builder) | |
15416 | { | |
15417 | auto iter = offset_map.find (builder.discriminant_offset); | |
15418 | if (iter == offset_map.end ()) | |
15419 | { | |
15420 | result.discriminant_index = -1; | |
15421 | /* Doesn't matter. */ | |
15422 | result.is_unsigned = false; | |
15423 | } | |
15424 | else | |
15425 | { | |
15426 | result.discriminant_index = iter->second; | |
15427 | result.is_unsigned | |
c6d940a9 | 15428 | = fi->fields[result.discriminant_index].field.type ()->is_unsigned (); |
9c6a1327 TT |
15429 | } |
15430 | ||
15431 | size_t n = builder.variants.size (); | |
15432 | variant *output = new (obstack) variant[n]; | |
15433 | for (size_t i = 0; i < n; ++i) | |
15434 | create_one_variant (output[i], obstack, offset_map, fi, | |
15435 | builder.variants[i]); | |
15436 | ||
15437 | result.variants = gdb::array_view<variant> (output, n); | |
15438 | } | |
15439 | ||
15440 | /* Create a vector of variant parts that can be attached to a type. | |
15441 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
15442 | holds the mapping from section offsets to fields for the type. FI | |
15443 | describes the fields of the type we're processing. VARIANT_PARTS | |
15444 | is the vector to convert. */ | |
15445 | ||
15446 | static const gdb::array_view<variant_part> | |
15447 | create_variant_parts (struct obstack *obstack, | |
15448 | const offset_map_type &offset_map, | |
15449 | struct field_info *fi, | |
15450 | const std::vector<variant_part_builder> &variant_parts) | |
15451 | { | |
15452 | if (variant_parts.empty ()) | |
15453 | return {}; | |
15454 | ||
15455 | size_t n = variant_parts.size (); | |
15456 | variant_part *result = new (obstack) variant_part[n]; | |
15457 | for (size_t i = 0; i < n; ++i) | |
15458 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
15459 | variant_parts[i]); | |
15460 | ||
15461 | return gdb::array_view<variant_part> (result, n); | |
15462 | } | |
15463 | ||
15464 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
15465 | done. */ | |
15466 | ||
15467 | static void | |
15468 | add_variant_property (struct field_info *fip, struct type *type, | |
15469 | struct dwarf2_cu *cu) | |
15470 | { | |
15471 | /* Map section offsets of fields to their field index. Note the | |
15472 | field index here does not take the number of baseclasses into | |
15473 | account. */ | |
15474 | offset_map_type offset_map; | |
15475 | for (int i = 0; i < fip->fields.size (); ++i) | |
15476 | offset_map[fip->fields[i].offset] = i; | |
15477 | ||
5e22e966 | 15478 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
15479 | gdb::array_view<variant_part> parts |
15480 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
15481 | fip->variant_parts); | |
15482 | ||
15483 | struct dynamic_prop prop; | |
8c2e4e06 SM |
15484 | prop.set_variant_parts ((gdb::array_view<variant_part> *) |
15485 | obstack_copy (&objfile->objfile_obstack, &parts, | |
15486 | sizeof (parts))); | |
9c6a1327 | 15487 | |
5c54719c | 15488 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
15489 | } |
15490 | ||
c906108c SS |
15491 | /* Create the vector of fields, and attach it to the type. */ |
15492 | ||
15493 | static void | |
fba45db2 | 15494 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15495 | struct dwarf2_cu *cu) |
c906108c | 15496 | { |
317f7127 | 15497 | int nfields = fip->nfields (); |
c906108c SS |
15498 | |
15499 | /* Record the field count, allocate space for the array of fields, | |
15500 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 15501 | type->set_num_fields (nfields); |
3cabb6b0 SM |
15502 | type->set_fields |
15503 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 15504 | |
b4ba55a1 | 15505 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15506 | { |
15507 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15508 | ||
15509 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15510 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15511 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15512 | ||
15513 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15514 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15515 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15516 | ||
774b6a14 TT |
15517 | TYPE_FIELD_IGNORE_BITS (type) = |
15518 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15519 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15520 | } |
15521 | ||
15522 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15523 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15524 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15525 | { |
be2daae6 | 15526 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15527 | unsigned char *pointer; |
c906108c SS |
15528 | |
15529 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15530 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15531 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15532 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15533 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15534 | } |
15535 | ||
9c6a1327 TT |
15536 | if (!fip->variant_parts.empty ()) |
15537 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15538 | |
be2daae6 TT |
15539 | /* Copy the saved-up fields into the field vector. */ |
15540 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15541 | { |
be2daae6 TT |
15542 | struct nextfield &field |
15543 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15544 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15545 | |
ceacbf6e | 15546 | type->field (i) = field.field; |
be2daae6 | 15547 | switch (field.accessibility) |
c906108c | 15548 | { |
c5aa993b | 15549 | case DW_ACCESS_private: |
b4ba55a1 | 15550 | if (cu->language != language_ada) |
be2daae6 | 15551 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15552 | break; |
c906108c | 15553 | |
c5aa993b | 15554 | case DW_ACCESS_protected: |
b4ba55a1 | 15555 | if (cu->language != language_ada) |
be2daae6 | 15556 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15557 | break; |
c906108c | 15558 | |
c5aa993b JM |
15559 | case DW_ACCESS_public: |
15560 | break; | |
c906108c | 15561 | |
c5aa993b JM |
15562 | default: |
15563 | /* Unknown accessibility. Complain and treat it as public. */ | |
15564 | { | |
b98664d3 | 15565 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15566 | field.accessibility); |
c5aa993b JM |
15567 | } |
15568 | break; | |
c906108c | 15569 | } |
be2daae6 | 15570 | if (i < fip->baseclasses.size ()) |
c906108c | 15571 | { |
be2daae6 | 15572 | switch (field.virtuality) |
c906108c | 15573 | { |
c5aa993b JM |
15574 | case DW_VIRTUALITY_virtual: |
15575 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15576 | if (cu->language == language_ada) |
a73c6dcd | 15577 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15578 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15579 | break; |
c906108c SS |
15580 | } |
15581 | } | |
c906108c SS |
15582 | } |
15583 | } | |
15584 | ||
7d27a96d TT |
15585 | /* Return true if this member function is a constructor, false |
15586 | otherwise. */ | |
15587 | ||
15588 | static int | |
15589 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15590 | { | |
15591 | const char *fieldname; | |
fe978cb0 | 15592 | const char *type_name; |
7d27a96d TT |
15593 | int len; |
15594 | ||
15595 | if (die->parent == NULL) | |
15596 | return 0; | |
15597 | ||
15598 | if (die->parent->tag != DW_TAG_structure_type | |
15599 | && die->parent->tag != DW_TAG_union_type | |
15600 | && die->parent->tag != DW_TAG_class_type) | |
15601 | return 0; | |
15602 | ||
15603 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15604 | type_name = dwarf2_name (die->parent, cu); |
15605 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15606 | return 0; |
15607 | ||
15608 | len = strlen (fieldname); | |
fe978cb0 PA |
15609 | return (strncmp (fieldname, type_name, len) == 0 |
15610 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15611 | } |
15612 | ||
c906108c SS |
15613 | /* Add a member function to the proper fieldlist. */ |
15614 | ||
15615 | static void | |
107d2387 | 15616 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15617 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15618 | { |
5e22e966 | 15619 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15620 | struct attribute *attr; |
c906108c | 15621 | int i; |
be2daae6 | 15622 | struct fnfieldlist *flp = nullptr; |
c906108c | 15623 | struct fn_field *fnp; |
15d034d0 | 15624 | const char *fieldname; |
f792889a | 15625 | struct type *this_type; |
c906108c | 15626 | |
b4ba55a1 | 15627 | if (cu->language == language_ada) |
a73c6dcd | 15628 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15629 | |
2df3850c | 15630 | /* Get name of member function. */ |
39cbfefa DJ |
15631 | fieldname = dwarf2_name (die, cu); |
15632 | if (fieldname == NULL) | |
2df3850c | 15633 | return; |
c906108c | 15634 | |
c906108c | 15635 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15636 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15637 | { |
27bfe10e | 15638 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15639 | { |
15640 | flp = &fip->fnfieldlists[i]; | |
15641 | break; | |
15642 | } | |
c906108c SS |
15643 | } |
15644 | ||
be2daae6 TT |
15645 | /* Create a new fnfieldlist if necessary. */ |
15646 | if (flp == nullptr) | |
c906108c | 15647 | { |
be2daae6 TT |
15648 | fip->fnfieldlists.emplace_back (); |
15649 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15650 | flp->name = fieldname; |
be2daae6 | 15651 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15652 | } |
15653 | ||
be2daae6 TT |
15654 | /* Create a new member function field and add it to the vector of |
15655 | fnfieldlists. */ | |
15656 | flp->fnfields.emplace_back (); | |
15657 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15658 | |
15659 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15660 | if (cu->language == language_cplus) |
be2daae6 TT |
15661 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15662 | die, cu); | |
3da10d80 KS |
15663 | else |
15664 | { | |
1d06ead6 | 15665 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15666 | fnp->physname = physname ? physname : ""; |
15667 | } | |
15668 | ||
c906108c | 15669 | fnp->type = alloc_type (objfile); |
f792889a | 15670 | this_type = read_type_die (die, cu); |
78134374 | 15671 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15672 | { |
1f704f76 | 15673 | int nparams = this_type->num_fields (); |
c906108c | 15674 | |
f792889a | 15675 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15676 | of the method itself (TYPE_CODE_METHOD). */ |
15677 | smash_to_method_type (fnp->type, type, | |
f792889a | 15678 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15679 | this_type->fields (), |
1f704f76 | 15680 | this_type->num_fields (), |
a409645d | 15681 | this_type->has_varargs ()); |
c906108c SS |
15682 | |
15683 | /* Handle static member functions. | |
dda83cd7 SM |
15684 | Dwarf2 has no clean way to discern C++ static and non-static |
15685 | member functions. G++ helps GDB by marking the first | |
15686 | parameter for non-static member functions (which is the this | |
15687 | pointer) as artificial. We obtain this information from | |
15688 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15689 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15690 | fnp->voffset = VOFFSET_STATIC; |
15691 | } | |
15692 | else | |
b98664d3 | 15693 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15694 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15695 | |
15696 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15697 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15698 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15699 | |
3e43a32a MS |
15700 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15701 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15702 | |
15703 | /* Get accessibility. */ | |
bf23a268 | 15704 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
60d5a603 | 15705 | switch (accessibility) |
c906108c | 15706 | { |
60d5a603 JK |
15707 | case DW_ACCESS_private: |
15708 | fnp->is_private = 1; | |
15709 | break; | |
15710 | case DW_ACCESS_protected: | |
15711 | fnp->is_protected = 1; | |
15712 | break; | |
c906108c SS |
15713 | } |
15714 | ||
b02dede2 | 15715 | /* Check for artificial methods. */ |
e142c38c | 15716 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
c45bc3f8 | 15717 | if (attr && attr->as_boolean ()) |
b02dede2 DJ |
15718 | fnp->is_artificial = 1; |
15719 | ||
e35000a7 TBA |
15720 | /* Check for defaulted methods. */ |
15721 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
e8e5c158 TT |
15722 | if (attr != nullptr) |
15723 | fnp->defaulted = attr->defaulted (); | |
e35000a7 TBA |
15724 | |
15725 | /* Check for deleted methods. */ | |
15726 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
c45bc3f8 | 15727 | if (attr != nullptr && attr->as_boolean ()) |
e35000a7 TBA |
15728 | fnp->is_deleted = 1; |
15729 | ||
7d27a96d TT |
15730 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15731 | ||
0d564a31 | 15732 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15733 | function. For older versions of GCC, this is an offset in the |
15734 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15735 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15736 | to the object address. */ |
15737 | ||
e142c38c | 15738 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15739 | if (attr != nullptr) |
8e19ed76 | 15740 | { |
9d2246fc | 15741 | if (attr->form_is_block () && attr->as_block ()->size > 0) |
dda83cd7 | 15742 | { |
9d2246fc TT |
15743 | struct dwarf_block *block = attr->as_block (); |
15744 | ||
15745 | if (block->data[0] == DW_OP_constu) | |
aec5aa8b TT |
15746 | { |
15747 | /* Old-style GCC. */ | |
9d2246fc | 15748 | fnp->voffset = decode_locdesc (block, cu) + 2; |
aec5aa8b | 15749 | } |
9d2246fc TT |
15750 | else if (block->data[0] == DW_OP_deref |
15751 | || (block->size > 1 | |
15752 | && block->data[0] == DW_OP_deref_size | |
15753 | && block->data[1] == cu->header.addr_size)) | |
aec5aa8b | 15754 | { |
9d2246fc | 15755 | fnp->voffset = decode_locdesc (block, cu); |
aec5aa8b TT |
15756 | if ((fnp->voffset % cu->header.addr_size) != 0) |
15757 | dwarf2_complex_location_expr_complaint (); | |
15758 | else | |
15759 | fnp->voffset /= cu->header.addr_size; | |
15760 | fnp->voffset += 2; | |
15761 | } | |
15762 | else | |
15763 | dwarf2_complex_location_expr_complaint (); | |
15764 | ||
15765 | if (!fnp->fcontext) | |
7e993ebf KS |
15766 | { |
15767 | /* If there is no `this' field and no DW_AT_containing_type, | |
15768 | we cannot actually find a base class context for the | |
15769 | vtable! */ | |
1f704f76 | 15770 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15771 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15772 | { | |
b98664d3 | 15773 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15774 | "function \"%s\" (offset %s)"), |
15775 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15776 | } |
15777 | else | |
15778 | { | |
15779 | fnp->fcontext | |
940da03e | 15780 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15781 | } |
15782 | } | |
aec5aa8b | 15783 | } |
cd6c91b4 | 15784 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 15785 | { |
4d3c2250 | 15786 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 | 15787 | } |
8e19ed76 | 15788 | else |
dda83cd7 | 15789 | { |
4d3c2250 KB |
15790 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15791 | fieldname); | |
dda83cd7 | 15792 | } |
0d564a31 | 15793 | } |
d48cc9dd DJ |
15794 | else |
15795 | { | |
15796 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
23dca5c3 | 15797 | if (attr != nullptr && attr->as_virtuality () != DW_VIRTUALITY_none) |
d48cc9dd DJ |
15798 | { |
15799 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15800 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15801 | "but the vtable offset is not specified"), |
9d8780f0 | 15802 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15803 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15804 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15805 | } | |
15806 | } | |
c906108c SS |
15807 | } |
15808 | ||
15809 | /* Create the vector of member function fields, and attach it to the type. */ | |
15810 | ||
15811 | static void | |
fba45db2 | 15812 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15813 | struct dwarf2_cu *cu) |
c906108c | 15814 | { |
b4ba55a1 | 15815 | if (cu->language == language_ada) |
a73c6dcd | 15816 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15817 | |
c906108c SS |
15818 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15819 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15820 | TYPE_ALLOC (type, |
15821 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15822 | |
be2daae6 | 15823 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15824 | { |
be2daae6 | 15825 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15826 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15827 | |
be2daae6 TT |
15828 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15829 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15830 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15831 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15832 | ||
15833 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15834 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15835 | } |
15836 | ||
be2daae6 | 15837 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15838 | } |
15839 | ||
1168df01 JB |
15840 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15841 | language, zero otherwise. */ | |
15842 | static int | |
15843 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15844 | { | |
15845 | static const char vptr[] = "_vptr"; | |
15846 | ||
9c37b5ae TT |
15847 | /* Look for the C++ form of the vtable. */ |
15848 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15849 | return 1; |
15850 | ||
15851 | return 0; | |
15852 | } | |
15853 | ||
c0dd20ea | 15854 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15855 | functions, with the ABI-specified layout. If TYPE describes |
15856 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15857 | |
15858 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15859 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15860 | |
0b92b5bb TT |
15861 | static void |
15862 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15863 | { |
09e2d7c7 | 15864 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15865 | |
15866 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15867 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15868 | return; |
c0dd20ea DJ |
15869 | |
15870 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15871 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15872 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15873 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15874 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15875 | return; | |
c0dd20ea DJ |
15876 | |
15877 | /* Find the type of the method. */ | |
940da03e | 15878 | pfn_type = type->field (0).type (); |
c0dd20ea | 15879 | if (pfn_type == NULL |
78134374 SM |
15880 | || pfn_type->code () != TYPE_CODE_PTR |
15881 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15882 | return; |
c0dd20ea DJ |
15883 | |
15884 | /* Look for the "this" argument. */ | |
15885 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15886 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15887 | /* || pfn_type->field (0).type () == NULL */ |
15888 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15889 | return; |
c0dd20ea | 15890 | |
940da03e | 15891 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15892 | new_type = alloc_type (objfile); |
09e2d7c7 | 15893 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15894 | pfn_type->fields (), pfn_type->num_fields (), |
a409645d | 15895 | pfn_type->has_varargs ()); |
0b92b5bb | 15896 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15897 | } |
1168df01 | 15898 | |
e26624c6 TT |
15899 | /* Helper for quirk_ada_thick_pointer. If TYPE is an array type that |
15900 | requires rewriting, then copy it and return the updated copy. | |
15901 | Otherwise return nullptr. */ | |
15902 | ||
15903 | static struct type * | |
15904 | rewrite_array_type (struct type *type) | |
15905 | { | |
15906 | if (type->code () != TYPE_CODE_ARRAY) | |
15907 | return nullptr; | |
15908 | ||
15909 | struct type *index_type = type->index_type (); | |
15910 | range_bounds *current_bounds = index_type->bounds (); | |
15911 | ||
15912 | /* Handle multi-dimensional arrays. */ | |
15913 | struct type *new_target = rewrite_array_type (TYPE_TARGET_TYPE (type)); | |
15914 | if (new_target == nullptr) | |
15915 | { | |
15916 | /* Maybe we don't need to rewrite this array. */ | |
15917 | if (current_bounds->low.kind () == PROP_CONST | |
15918 | && current_bounds->high.kind () == PROP_CONST) | |
15919 | return nullptr; | |
15920 | } | |
15921 | ||
15922 | /* Either the target type was rewritten, or the bounds have to be | |
15923 | updated. Either way we want to copy the type and update | |
15924 | everything. */ | |
15925 | struct type *copy = copy_type (type); | |
15926 | int nfields = copy->num_fields (); | |
15927 | field *new_fields | |
15928 | = ((struct field *) TYPE_ZALLOC (copy, | |
15929 | nfields * sizeof (struct field))); | |
15930 | memcpy (new_fields, copy->fields (), nfields * sizeof (struct field)); | |
15931 | copy->set_fields (new_fields); | |
15932 | if (new_target != nullptr) | |
15933 | TYPE_TARGET_TYPE (copy) = new_target; | |
15934 | ||
15935 | struct type *index_copy = copy_type (index_type); | |
15936 | range_bounds *bounds | |
15937 | = (struct range_bounds *) TYPE_ZALLOC (index_copy, | |
15938 | sizeof (range_bounds)); | |
15939 | *bounds = *current_bounds; | |
15940 | bounds->low.set_const_val (1); | |
15941 | bounds->high.set_const_val (0); | |
15942 | index_copy->set_bounds (bounds); | |
15943 | copy->set_index_type (index_copy); | |
15944 | ||
15945 | return copy; | |
15946 | } | |
15947 | ||
57567375 TT |
15948 | /* While some versions of GCC will generate complicated DWARF for an |
15949 | array (see quirk_ada_thick_pointer), more recent versions were | |
15950 | modified to emit an explicit thick pointer structure. However, in | |
15951 | this case, the array still has DWARF expressions for its ranges, | |
15952 | and these must be ignored. */ | |
15953 | ||
15954 | static void | |
15955 | quirk_ada_thick_pointer_struct (struct die_info *die, struct dwarf2_cu *cu, | |
15956 | struct type *type) | |
15957 | { | |
15958 | gdb_assert (cu->language == language_ada); | |
15959 | ||
15960 | /* Check for a structure with two children. */ | |
15961 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) | |
15962 | return; | |
15963 | ||
15964 | /* Check for P_ARRAY and P_BOUNDS members. */ | |
15965 | if (TYPE_FIELD_NAME (type, 0) == NULL | |
15966 | || strcmp (TYPE_FIELD_NAME (type, 0), "P_ARRAY") != 0 | |
15967 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15968 | || strcmp (TYPE_FIELD_NAME (type, 1), "P_BOUNDS") != 0) | |
15969 | return; | |
15970 | ||
15971 | /* Make sure we're looking at a pointer to an array. */ | |
15972 | if (type->field (0).type ()->code () != TYPE_CODE_PTR) | |
15973 | return; | |
57567375 | 15974 | |
e26624c6 TT |
15975 | /* The Ada code already knows how to handle these types, so all that |
15976 | we need to do is turn the bounds into static bounds. However, we | |
15977 | don't want to rewrite existing array or index types in-place, | |
15978 | because those may be referenced in other contexts where this | |
15979 | rewriting is undesirable. */ | |
15980 | struct type *new_ary_type | |
15981 | = rewrite_array_type (TYPE_TARGET_TYPE (type->field (0).type ())); | |
15982 | if (new_ary_type != nullptr) | |
15983 | type->field (0).set_type (lookup_pointer_type (new_ary_type)); | |
57567375 TT |
15984 | } |
15985 | ||
2b4424c3 TT |
15986 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15987 | appropriate error checking and issuing complaints if there is a | |
15988 | problem. */ | |
15989 | ||
15990 | static ULONGEST | |
15991 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15992 | { | |
15993 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15994 | ||
15995 | if (attr == nullptr) | |
15996 | return 0; | |
15997 | ||
cd6c91b4 | 15998 | if (!attr->form_is_constant ()) |
2b4424c3 | 15999 | { |
b98664d3 | 16000 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
16001 | " - DIE at %s [in module %s]"), |
16002 | sect_offset_str (die->sect_off), | |
5e22e966 | 16003 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
16004 | return 0; |
16005 | } | |
16006 | ||
529908cb TT |
16007 | LONGEST val = attr->constant_value (0); |
16008 | if (val < 0) | |
2b4424c3 | 16009 | { |
529908cb TT |
16010 | complaint (_("DW_AT_alignment value must not be negative" |
16011 | " - DIE at %s [in module %s]"), | |
16012 | sect_offset_str (die->sect_off), | |
16013 | objfile_name (cu->per_objfile->objfile)); | |
16014 | return 0; | |
2b4424c3 | 16015 | } |
529908cb | 16016 | ULONGEST align = val; |
2b4424c3 TT |
16017 | |
16018 | if (align == 0) | |
16019 | { | |
b98664d3 | 16020 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
16021 | " - DIE at %s [in module %s]"), |
16022 | sect_offset_str (die->sect_off), | |
5e22e966 | 16023 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
16024 | return 0; |
16025 | } | |
16026 | if ((align & (align - 1)) != 0) | |
16027 | { | |
b98664d3 | 16028 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
16029 | " - DIE at %s [in module %s]"), |
16030 | sect_offset_str (die->sect_off), | |
5e22e966 | 16031 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
16032 | return 0; |
16033 | } | |
16034 | ||
16035 | return align; | |
16036 | } | |
16037 | ||
16038 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
16039 | the alignment for TYPE. */ | |
16040 | ||
16041 | static void | |
16042 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
16043 | struct type *type) | |
16044 | { | |
16045 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 16046 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
16047 | " - DIE at %s [in module %s]"), |
16048 | sect_offset_str (die->sect_off), | |
5e22e966 | 16049 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 16050 | } |
685b1105 | 16051 | |
e35000a7 TBA |
16052 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
16053 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
16054 | ||
16055 | static bool | |
16056 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
16057 | { | |
16058 | switch (value) | |
16059 | { | |
16060 | case DW_CC_normal: | |
16061 | case DW_CC_pass_by_reference: | |
16062 | case DW_CC_pass_by_value: | |
16063 | return true; | |
16064 | ||
16065 | default: | |
16066 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 16067 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
16068 | return false; |
16069 | } | |
16070 | } | |
16071 | ||
d0922fcf TBA |
16072 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
16073 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
16074 | also according to GNU-specific values (see include/dwarf2.h). */ | |
16075 | ||
16076 | static bool | |
16077 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
16078 | { | |
16079 | switch (value) | |
16080 | { | |
16081 | case DW_CC_normal: | |
16082 | case DW_CC_program: | |
16083 | case DW_CC_nocall: | |
16084 | return true; | |
16085 | ||
16086 | case DW_CC_GNU_renesas_sh: | |
16087 | case DW_CC_GNU_borland_fastcall_i386: | |
16088 | case DW_CC_GDB_IBM_OpenCL: | |
16089 | return true; | |
16090 | ||
16091 | default: | |
16092 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 16093 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
16094 | return false; |
16095 | } | |
16096 | } | |
16097 | ||
c906108c | 16098 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
16099 | (definition) to create a type for the structure or union. Fill in |
16100 | the type's name and general properties; the members will not be | |
83655187 DE |
16101 | processed until process_structure_scope. A symbol table entry for |
16102 | the type will also not be done until process_structure_scope (assuming | |
16103 | the type has a name). | |
c906108c | 16104 | |
c767944b DJ |
16105 | NOTE: we need to call these functions regardless of whether or not the |
16106 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 16107 | structure or union. This gets the type entered into our set of |
83655187 | 16108 | user defined types. */ |
c906108c | 16109 | |
f792889a | 16110 | static struct type * |
134d01f1 | 16111 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16112 | { |
5e22e966 | 16113 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
16114 | struct type *type; |
16115 | struct attribute *attr; | |
15d034d0 | 16116 | const char *name; |
c906108c | 16117 | |
348e048f DE |
16118 | /* If the definition of this type lives in .debug_types, read that type. |
16119 | Don't follow DW_AT_specification though, that will take us back up | |
16120 | the chain and we want to go down. */ | |
052c8bb8 | 16121 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16122 | if (attr != nullptr) |
348e048f | 16123 | { |
ac9ec31b | 16124 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16125 | |
ac9ec31b | 16126 | /* The type's CU may not be the same as CU. |
02142a6c | 16127 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16128 | return set_die_type (die, type, cu); |
16129 | } | |
16130 | ||
c0dd20ea | 16131 | type = alloc_type (objfile); |
c906108c | 16132 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 16133 | |
39cbfefa DJ |
16134 | name = dwarf2_name (die, cu); |
16135 | if (name != NULL) | |
c906108c | 16136 | { |
987504bb | 16137 | if (cu->language == language_cplus |
c44af4eb TT |
16138 | || cu->language == language_d |
16139 | || cu->language == language_rust) | |
63d06c5c | 16140 | { |
15d034d0 | 16141 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
16142 | |
16143 | /* dwarf2_full_name might have already finished building the DIE's | |
16144 | type. If so, there is no need to continue. */ | |
16145 | if (get_die_type (die, cu) != NULL) | |
16146 | return get_die_type (die, cu); | |
16147 | ||
d0e39ea2 | 16148 | type->set_name (full_name); |
63d06c5c DC |
16149 | } |
16150 | else | |
16151 | { | |
d8151005 DJ |
16152 | /* The name is already allocated along with this objfile, so |
16153 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 16154 | type->set_name (name); |
63d06c5c | 16155 | } |
c906108c SS |
16156 | } |
16157 | ||
16158 | if (die->tag == DW_TAG_structure_type) | |
16159 | { | |
67607e24 | 16160 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16161 | } |
16162 | else if (die->tag == DW_TAG_union_type) | |
16163 | { | |
67607e24 | 16164 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
16165 | } |
16166 | else | |
16167 | { | |
67607e24 | 16168 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16169 | } |
16170 | ||
0cc2414c TT |
16171 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
16172 | TYPE_DECLARED_CLASS (type) = 1; | |
16173 | ||
e35000a7 TBA |
16174 | /* Store the calling convention in the type if it's available in |
16175 | the die. Otherwise the calling convention remains set to | |
16176 | the default value DW_CC_normal. */ | |
16177 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
16178 | if (attr != nullptr | |
529908cb | 16179 | && is_valid_DW_AT_calling_convention_for_type (attr->constant_value (0))) |
e35000a7 TBA |
16180 | { |
16181 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16182 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
529908cb | 16183 | = (enum dwarf_calling_convention) (attr->constant_value (0)); |
e35000a7 TBA |
16184 | } |
16185 | ||
e142c38c | 16186 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16187 | if (attr != nullptr) |
c906108c | 16188 | { |
cd6c91b4 | 16189 | if (attr->form_is_constant ()) |
dda83cd7 | 16190 | TYPE_LENGTH (type) = attr->constant_value (0); |
155bfbd3 JB |
16191 | else |
16192 | { | |
f8e89861 | 16193 | struct dynamic_prop prop; |
293e7e51 | 16194 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 16195 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
dda83cd7 | 16196 | TYPE_LENGTH (type) = 0; |
155bfbd3 | 16197 | } |
c906108c SS |
16198 | } |
16199 | else | |
16200 | { | |
16201 | TYPE_LENGTH (type) = 0; | |
16202 | } | |
16203 | ||
2b4424c3 TT |
16204 | maybe_set_alignment (cu, die, type); |
16205 | ||
5230b05a | 16206 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 16207 | { |
5230b05a WT |
16208 | /* ICC<14 does not output the required DW_AT_declaration on |
16209 | incomplete types, but gives them a size of zero. */ | |
b4b73759 | 16210 | type->set_is_stub (true); |
685b1105 JK |
16211 | } |
16212 | else | |
9baccff6 | 16213 | type->set_stub_is_supported (true); |
685b1105 | 16214 | |
dc718098 | 16215 | if (die_is_declaration (die, cu)) |
b4b73759 | 16216 | type->set_is_stub (true); |
a6c727b2 DJ |
16217 | else if (attr == NULL && die->child == NULL |
16218 | && producer_is_realview (cu->producer)) | |
16219 | /* RealView does not output the required DW_AT_declaration | |
16220 | on incomplete types. */ | |
b4b73759 | 16221 | type->set_is_stub (true); |
dc718098 | 16222 | |
c906108c SS |
16223 | /* We need to add the type field to the die immediately so we don't |
16224 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 16225 | type within the structure itself. */ |
1c379e20 | 16226 | set_die_type (die, type, cu); |
c906108c | 16227 | |
7e314c57 JK |
16228 | /* set_die_type should be already done. */ |
16229 | set_descriptive_type (type, die, cu); | |
16230 | ||
c767944b DJ |
16231 | return type; |
16232 | } | |
16233 | ||
9c6a1327 TT |
16234 | static void handle_struct_member_die |
16235 | (struct die_info *child_die, | |
16236 | struct type *type, | |
16237 | struct field_info *fi, | |
16238 | std::vector<struct symbol *> *template_args, | |
16239 | struct dwarf2_cu *cu); | |
16240 | ||
16241 | /* A helper for handle_struct_member_die that handles | |
16242 | DW_TAG_variant_part. */ | |
16243 | ||
16244 | static void | |
16245 | handle_variant_part (struct die_info *die, struct type *type, | |
16246 | struct field_info *fi, | |
16247 | std::vector<struct symbol *> *template_args, | |
16248 | struct dwarf2_cu *cu) | |
16249 | { | |
16250 | variant_part_builder *new_part; | |
16251 | if (fi->current_variant_part == nullptr) | |
16252 | { | |
16253 | fi->variant_parts.emplace_back (); | |
16254 | new_part = &fi->variant_parts.back (); | |
16255 | } | |
16256 | else if (!fi->current_variant_part->processing_variant) | |
16257 | { | |
16258 | complaint (_("nested DW_TAG_variant_part seen " | |
16259 | "- DIE at %s [in module %s]"), | |
16260 | sect_offset_str (die->sect_off), | |
5e22e966 | 16261 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16262 | return; |
16263 | } | |
16264 | else | |
16265 | { | |
16266 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
16267 | current.variant_parts.emplace_back (); | |
16268 | new_part = ¤t.variant_parts.back (); | |
16269 | } | |
16270 | ||
16271 | /* When we recurse, we want callees to add to this new variant | |
16272 | part. */ | |
16273 | scoped_restore save_current_variant_part | |
16274 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
16275 | ||
16276 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16277 | if (discr == NULL) | |
16278 | { | |
16279 | /* It's a univariant form, an extension we support. */ | |
16280 | } | |
16281 | else if (discr->form_is_ref ()) | |
16282 | { | |
16283 | struct dwarf2_cu *target_cu = cu; | |
16284 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16285 | ||
16286 | new_part->discriminant_offset = target_die->sect_off; | |
16287 | } | |
16288 | else | |
16289 | { | |
16290 | complaint (_("DW_AT_discr does not have DIE reference form" | |
16291 | " - DIE at %s [in module %s]"), | |
16292 | sect_offset_str (die->sect_off), | |
5e22e966 | 16293 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16294 | } |
16295 | ||
16296 | for (die_info *child_die = die->child; | |
16297 | child_die != NULL; | |
16298 | child_die = child_die->sibling) | |
16299 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
16300 | } | |
16301 | ||
16302 | /* A helper for handle_struct_member_die that handles | |
16303 | DW_TAG_variant. */ | |
16304 | ||
16305 | static void | |
16306 | handle_variant (struct die_info *die, struct type *type, | |
16307 | struct field_info *fi, | |
16308 | std::vector<struct symbol *> *template_args, | |
16309 | struct dwarf2_cu *cu) | |
16310 | { | |
16311 | if (fi->current_variant_part == nullptr) | |
16312 | { | |
16313 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
16314 | "- DIE at %s [in module %s]"), | |
16315 | sect_offset_str (die->sect_off), | |
5e22e966 | 16316 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16317 | return; |
16318 | } | |
16319 | if (fi->current_variant_part->processing_variant) | |
16320 | { | |
16321 | complaint (_("nested DW_TAG_variant seen " | |
16322 | "- DIE at %s [in module %s]"), | |
16323 | sect_offset_str (die->sect_off), | |
5e22e966 | 16324 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16325 | return; |
16326 | } | |
16327 | ||
16328 | scoped_restore save_processing_variant | |
16329 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
16330 | true); | |
16331 | ||
16332 | fi->current_variant_part->variants.emplace_back (); | |
16333 | variant_field &variant = fi->current_variant_part->variants.back (); | |
16334 | variant.first_field = fi->fields.size (); | |
16335 | ||
16336 | /* In a variant we want to get the discriminant and also add a | |
16337 | field for our sole member child. */ | |
16338 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
cae21f8e | 16339 | if (discr == nullptr || !discr->form_is_constant ()) |
9c6a1327 TT |
16340 | { |
16341 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
9d2246fc | 16342 | if (discr == nullptr || discr->as_block ()->size == 0) |
9c6a1327 TT |
16343 | variant.default_branch = true; |
16344 | else | |
9d2246fc | 16345 | variant.discr_list_data = discr->as_block (); |
9c6a1327 TT |
16346 | } |
16347 | else | |
cae21f8e | 16348 | variant.discriminant_value = discr->constant_value (0); |
9c6a1327 TT |
16349 | |
16350 | for (die_info *variant_child = die->child; | |
16351 | variant_child != NULL; | |
16352 | variant_child = variant_child->sibling) | |
16353 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
16354 | ||
16355 | variant.last_field = fi->fields.size (); | |
16356 | } | |
16357 | ||
2ddeaf8a TT |
16358 | /* A helper for process_structure_scope that handles a single member |
16359 | DIE. */ | |
16360 | ||
16361 | static void | |
16362 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
16363 | struct field_info *fi, | |
16364 | std::vector<struct symbol *> *template_args, | |
16365 | struct dwarf2_cu *cu) | |
16366 | { | |
16367 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 16368 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
16369 | { |
16370 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
16371 | should be a DW_TAG_member that is a declaration, but | |
16372 | all versions of G++ as of this writing (so through at | |
16373 | least 3.2.1) incorrectly generate DW_TAG_variable | |
16374 | tags for them instead. */ | |
16375 | dwarf2_add_field (fi, child_die, cu); | |
16376 | } | |
16377 | else if (child_die->tag == DW_TAG_subprogram) | |
16378 | { | |
16379 | /* Rust doesn't have member functions in the C++ sense. | |
16380 | However, it does emit ordinary functions as children | |
16381 | of a struct DIE. */ | |
16382 | if (cu->language == language_rust) | |
16383 | read_func_scope (child_die, cu); | |
16384 | else | |
16385 | { | |
16386 | /* C++ member function. */ | |
16387 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16388 | } | |
16389 | } | |
16390 | else if (child_die->tag == DW_TAG_inheritance) | |
16391 | { | |
16392 | /* C++ base class field. */ | |
16393 | dwarf2_add_field (fi, child_die, cu); | |
16394 | } | |
16395 | else if (type_can_define_types (child_die)) | |
16396 | dwarf2_add_type_defn (fi, child_die, cu); | |
16397 | else if (child_die->tag == DW_TAG_template_type_param | |
16398 | || child_die->tag == DW_TAG_template_value_param) | |
16399 | { | |
16400 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16401 | ||
16402 | if (arg != NULL) | |
16403 | template_args->push_back (arg); | |
16404 | } | |
9c6a1327 TT |
16405 | else if (child_die->tag == DW_TAG_variant_part) |
16406 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 16407 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 16408 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
16409 | } |
16410 | ||
c767944b DJ |
16411 | /* Finish creating a structure or union type, including filling in |
16412 | its members and creating a symbol for it. */ | |
16413 | ||
16414 | static void | |
16415 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16416 | { | |
5e22e966 | 16417 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 16418 | struct die_info *child_die; |
c767944b DJ |
16419 | struct type *type; |
16420 | ||
16421 | type = get_die_type (die, cu); | |
16422 | if (type == NULL) | |
16423 | type = read_structure_type (die, cu); | |
16424 | ||
3e1d3d8c | 16425 | bool has_template_parameters = false; |
e142c38c | 16426 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16427 | { |
16428 | struct field_info fi; | |
2f4732b0 | 16429 | std::vector<struct symbol *> template_args; |
c906108c | 16430 | |
639d11d3 | 16431 | child_die = die->child; |
c906108c SS |
16432 | |
16433 | while (child_die && child_die->tag) | |
16434 | { | |
2ddeaf8a | 16435 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 16436 | child_die = child_die->sibling; |
c906108c SS |
16437 | } |
16438 | ||
34eaf542 | 16439 | /* Attach template arguments to type. */ |
2f4732b0 | 16440 | if (!template_args.empty ()) |
34eaf542 | 16441 | { |
3e1d3d8c | 16442 | has_template_parameters = true; |
34eaf542 | 16443 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16444 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16445 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16446 | = XOBNEWVEC (&objfile->objfile_obstack, |
16447 | struct symbol *, | |
16448 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16449 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16450 | template_args.data (), |
34eaf542 TT |
16451 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16452 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16453 | } |
16454 | ||
c906108c | 16455 | /* Attach fields and member functions to the type. */ |
317f7127 | 16456 | if (fi.nfields () > 0) |
e7c27a73 | 16457 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16458 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16459 | { |
e7c27a73 | 16460 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16461 | |
c5aa993b | 16462 | /* Get the type which refers to the base class (possibly this |
c906108c | 16463 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16464 | class from the DW_AT_containing_type attribute. This use of |
16465 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16466 | |
e142c38c | 16467 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16468 | { |
e7c27a73 | 16469 | struct type *t = die_containing_type (die, cu); |
c906108c | 16470 | |
ae6ae975 | 16471 | set_type_vptr_basetype (type, t); |
c906108c SS |
16472 | if (type == t) |
16473 | { | |
c906108c SS |
16474 | int i; |
16475 | ||
16476 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 16477 | for (i = t->num_fields () - 1; |
c906108c SS |
16478 | i >= TYPE_N_BASECLASSES (t); |
16479 | --i) | |
16480 | { | |
0d5cff50 | 16481 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16482 | |
dda83cd7 | 16483 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16484 | { |
ae6ae975 | 16485 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16486 | break; |
16487 | } | |
16488 | } | |
16489 | ||
16490 | /* Complain if virtual function table field not found. */ | |
16491 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16492 | complaint (_("virtual function table pointer " |
3e43a32a | 16493 | "not found when defining class '%s'"), |
7d93a1e0 | 16494 | type->name () ? type->name () : ""); |
c906108c SS |
16495 | } |
16496 | else | |
16497 | { | |
ae6ae975 | 16498 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16499 | } |
16500 | } | |
f6235d4c | 16501 | else if (cu->producer |
61012eef | 16502 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16503 | { |
16504 | /* The IBM XLC compiler does not provide direct indication | |
dda83cd7 SM |
16505 | of the containing type, but the vtable pointer is |
16506 | always named __vfp. */ | |
f6235d4c EZ |
16507 | |
16508 | int i; | |
16509 | ||
1f704f76 | 16510 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
16511 | i >= TYPE_N_BASECLASSES (type); |
16512 | --i) | |
16513 | { | |
16514 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16515 | { | |
ae6ae975 DE |
16516 | set_type_vptr_fieldno (type, i); |
16517 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16518 | break; |
16519 | } | |
16520 | } | |
16521 | } | |
c906108c | 16522 | } |
98751a41 JK |
16523 | |
16524 | /* Copy fi.typedef_field_list linked list elements content into the | |
16525 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16526 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16527 | { |
be2daae6 | 16528 | int count = fi.typedef_field_list.size (); |
98751a41 | 16529 | |
a0d7a4ff | 16530 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16531 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16532 | = ((struct decl_field *) |
be2daae6 TT |
16533 | TYPE_ALLOC (type, |
16534 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16535 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16536 | |
be2daae6 TT |
16537 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16538 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16539 | } |
c767944b | 16540 | |
883fd55a KS |
16541 | /* Copy fi.nested_types_list linked list elements content into the |
16542 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16543 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16544 | { |
be2daae6 | 16545 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16546 | |
16547 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16548 | TYPE_NESTED_TYPES_ARRAY (type) | |
16549 | = ((struct decl_field *) | |
be2daae6 TT |
16550 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16551 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16552 | |
be2daae6 TT |
16553 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16554 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16555 | } |
c906108c | 16556 | } |
63d06c5c | 16557 | |
bb5ed363 | 16558 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16559 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16560 | cu->rust_unions.push_back (type); | |
57567375 TT |
16561 | else if (cu->language == language_ada) |
16562 | quirk_ada_thick_pointer_struct (die, cu, type); | |
0b92b5bb | 16563 | |
90aeadfc DC |
16564 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16565 | snapshots) has been known to create a die giving a declaration | |
16566 | for a class that has, as a child, a die giving a definition for a | |
16567 | nested class. So we have to process our children even if the | |
16568 | current die is a declaration. Normally, of course, a declaration | |
16569 | won't have any children at all. */ | |
134d01f1 | 16570 | |
ca040673 DE |
16571 | child_die = die->child; |
16572 | ||
90aeadfc DC |
16573 | while (child_die != NULL && child_die->tag) |
16574 | { | |
16575 | if (child_die->tag == DW_TAG_member | |
16576 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16577 | || child_die->tag == DW_TAG_inheritance |
16578 | || child_die->tag == DW_TAG_template_value_param | |
16579 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16580 | { |
90aeadfc | 16581 | /* Do nothing. */ |
134d01f1 | 16582 | } |
90aeadfc DC |
16583 | else |
16584 | process_die (child_die, cu); | |
134d01f1 | 16585 | |
436c571c | 16586 | child_die = child_die->sibling; |
134d01f1 DJ |
16587 | } |
16588 | ||
fa4028e9 JB |
16589 | /* Do not consider external references. According to the DWARF standard, |
16590 | these DIEs are identified by the fact that they have no byte_size | |
16591 | attribute, and a declaration attribute. */ | |
16592 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16593 | || !die_is_declaration (die, cu) |
16594 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16595 | { |
16596 | struct symbol *sym = new_symbol (die, type, cu); | |
16597 | ||
16598 | if (has_template_parameters) | |
16599 | { | |
a776957c TT |
16600 | struct symtab *symtab; |
16601 | if (sym != nullptr) | |
16602 | symtab = symbol_symtab (sym); | |
16603 | else if (cu->line_header != nullptr) | |
16604 | { | |
16605 | /* Any related symtab will do. */ | |
16606 | symtab | |
7ba99d21 | 16607 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16608 | } |
16609 | else | |
16610 | { | |
16611 | symtab = nullptr; | |
16612 | complaint (_("could not find suitable " | |
16613 | "symtab for template parameter" | |
16614 | " - DIE at %s [in module %s]"), | |
16615 | sect_offset_str (die->sect_off), | |
16616 | objfile_name (objfile)); | |
16617 | } | |
16618 | ||
16619 | if (symtab != nullptr) | |
16620 | { | |
16621 | /* Make sure that the symtab is set on the new symbols. | |
16622 | Even though they don't appear in this symtab directly, | |
16623 | other parts of gdb assume that symbols do, and this is | |
16624 | reasonably true. */ | |
16625 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16626 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16627 | } | |
3e1d3d8c TT |
16628 | } |
16629 | } | |
134d01f1 DJ |
16630 | } |
16631 | ||
ed6acedd TT |
16632 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16633 | type, update TYPE using some information only available in DIE's | |
16634 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16635 | |
16636 | static void | |
16637 | update_enumeration_type_from_children (struct die_info *die, | |
16638 | struct type *type, | |
16639 | struct dwarf2_cu *cu) | |
16640 | { | |
60f7655a | 16641 | struct die_info *child_die; |
55426c9d JB |
16642 | int unsigned_enum = 1; |
16643 | int flag_enum = 1; | |
55426c9d | 16644 | |
8268c778 | 16645 | auto_obstack obstack; |
ed6acedd | 16646 | std::vector<struct field> fields; |
55426c9d | 16647 | |
60f7655a DE |
16648 | for (child_die = die->child; |
16649 | child_die != NULL && child_die->tag; | |
436c571c | 16650 | child_die = child_die->sibling) |
55426c9d JB |
16651 | { |
16652 | struct attribute *attr; | |
16653 | LONGEST value; | |
16654 | const gdb_byte *bytes; | |
16655 | struct dwarf2_locexpr_baton *baton; | |
16656 | const char *name; | |
60f7655a | 16657 | |
55426c9d JB |
16658 | if (child_die->tag != DW_TAG_enumerator) |
16659 | continue; | |
16660 | ||
16661 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16662 | if (attr == NULL) | |
16663 | continue; | |
16664 | ||
16665 | name = dwarf2_name (child_die, cu); | |
16666 | if (name == NULL) | |
16667 | name = "<anonymous enumerator>"; | |
16668 | ||
16669 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16670 | &value, &bytes, &baton); | |
16671 | if (value < 0) | |
16672 | { | |
16673 | unsigned_enum = 0; | |
16674 | flag_enum = 0; | |
16675 | } | |
55426c9d | 16676 | else |
edd45eb0 SM |
16677 | { |
16678 | if (count_one_bits_ll (value) >= 2) | |
16679 | flag_enum = 0; | |
edd45eb0 | 16680 | } |
55426c9d | 16681 | |
ed6acedd TT |
16682 | fields.emplace_back (); |
16683 | struct field &field = fields.back (); | |
16684 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16685 | SET_FIELD_ENUMVAL (field, value); | |
16686 | } | |
16687 | ||
16688 | if (!fields.empty ()) | |
16689 | { | |
5e33d5f4 | 16690 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16691 | type->set_fields |
16692 | ((struct field *) | |
16693 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16694 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16695 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16696 | } |
16697 | ||
16698 | if (unsigned_enum) | |
653223d3 SM |
16699 | type->set_is_unsigned (true); |
16700 | ||
55426c9d JB |
16701 | if (flag_enum) |
16702 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16703 | } |
16704 | ||
134d01f1 DJ |
16705 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16706 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16707 | |
f792889a | 16708 | static struct type * |
134d01f1 | 16709 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16710 | { |
5e22e966 | 16711 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16712 | struct type *type; |
c906108c | 16713 | struct attribute *attr; |
0114d602 | 16714 | const char *name; |
134d01f1 | 16715 | |
348e048f DE |
16716 | /* If the definition of this type lives in .debug_types, read that type. |
16717 | Don't follow DW_AT_specification though, that will take us back up | |
16718 | the chain and we want to go down. */ | |
052c8bb8 | 16719 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16720 | if (attr != nullptr) |
348e048f | 16721 | { |
ac9ec31b | 16722 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16723 | |
ac9ec31b | 16724 | /* The type's CU may not be the same as CU. |
02142a6c | 16725 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16726 | return set_die_type (die, type, cu); |
16727 | } | |
16728 | ||
c906108c SS |
16729 | type = alloc_type (objfile); |
16730 | ||
67607e24 | 16731 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16732 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16733 | if (name != NULL) |
d0e39ea2 | 16734 | type->set_name (name); |
c906108c | 16735 | |
0626fc76 TT |
16736 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16737 | if (attr != NULL) | |
16738 | { | |
16739 | struct type *underlying_type = die_type (die, cu); | |
16740 | ||
16741 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16742 | } | |
16743 | ||
e142c38c | 16744 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16745 | if (attr != nullptr) |
c906108c | 16746 | { |
529908cb | 16747 | TYPE_LENGTH (type) = attr->constant_value (0); |
c906108c SS |
16748 | } |
16749 | else | |
16750 | { | |
16751 | TYPE_LENGTH (type) = 0; | |
16752 | } | |
16753 | ||
2b4424c3 TT |
16754 | maybe_set_alignment (cu, die, type); |
16755 | ||
137033e9 JB |
16756 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16757 | declared as private in the package spec, and then defined only | |
16758 | inside the package body. Such types are known as Taft Amendment | |
16759 | Types. When another package uses such a type, an incomplete DIE | |
16760 | may be generated by the compiler. */ | |
02eb380e | 16761 | if (die_is_declaration (die, cu)) |
b4b73759 | 16762 | type->set_is_stub (true); |
02eb380e | 16763 | |
0626fc76 TT |
16764 | /* If this type has an underlying type that is not a stub, then we |
16765 | may use its attributes. We always use the "unsigned" attribute | |
16766 | in this situation, because ordinarily we guess whether the type | |
16767 | is unsigned -- but the guess can be wrong and the underlying type | |
16768 | can tell us the reality. However, we defer to a local size | |
16769 | attribute if one exists, because this lets the compiler override | |
16770 | the underlying type if needed. */ | |
e46d3488 | 16771 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_TARGET_TYPE (type)->is_stub ()) |
0626fc76 | 16772 | { |
9e7c9a03 HD |
16773 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16774 | underlying_type = check_typedef (underlying_type); | |
653223d3 SM |
16775 | |
16776 | type->set_is_unsigned (underlying_type->is_unsigned ()); | |
16777 | ||
0626fc76 | 16778 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16779 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
653223d3 | 16780 | |
2b4424c3 | 16781 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16782 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16783 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16784 | } |
16785 | ||
3d567982 TT |
16786 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16787 | ||
ed6acedd TT |
16788 | set_die_type (die, type, cu); |
16789 | ||
16790 | /* Finish the creation of this type by using the enum's children. | |
16791 | Note that, as usual, this must come after set_die_type to avoid | |
16792 | infinite recursion when trying to compute the names of the | |
16793 | enumerators. */ | |
16794 | update_enumeration_type_from_children (die, type, cu); | |
16795 | ||
16796 | return type; | |
134d01f1 DJ |
16797 | } |
16798 | ||
16799 | /* Given a pointer to a die which begins an enumeration, process all | |
16800 | the dies that define the members of the enumeration, and create the | |
16801 | symbol for the enumeration type. | |
16802 | ||
16803 | NOTE: We reverse the order of the element list. */ | |
16804 | ||
16805 | static void | |
16806 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16807 | { | |
f792889a | 16808 | struct type *this_type; |
134d01f1 | 16809 | |
f792889a DJ |
16810 | this_type = get_die_type (die, cu); |
16811 | if (this_type == NULL) | |
16812 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16813 | |
639d11d3 | 16814 | if (die->child != NULL) |
c906108c | 16815 | { |
9dc481d3 | 16816 | struct die_info *child_die; |
15d034d0 | 16817 | const char *name; |
9dc481d3 | 16818 | |
639d11d3 | 16819 | child_die = die->child; |
c906108c SS |
16820 | while (child_die && child_die->tag) |
16821 | { | |
16822 | if (child_die->tag != DW_TAG_enumerator) | |
16823 | { | |
e7c27a73 | 16824 | process_die (child_die, cu); |
c906108c SS |
16825 | } |
16826 | else | |
16827 | { | |
39cbfefa DJ |
16828 | name = dwarf2_name (child_die, cu); |
16829 | if (name) | |
ed6acedd | 16830 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16831 | } |
16832 | ||
436c571c | 16833 | child_die = child_die->sibling; |
c906108c | 16834 | } |
c906108c | 16835 | } |
134d01f1 | 16836 | |
6c83ed52 TT |
16837 | /* If we are reading an enum from a .debug_types unit, and the enum |
16838 | is a declaration, and the enum is not the signatured type in the | |
16839 | unit, then we do not want to add a symbol for it. Adding a | |
16840 | symbol would in some cases obscure the true definition of the | |
16841 | enum, giving users an incomplete type when the definition is | |
16842 | actually available. Note that we do not want to do this for all | |
16843 | enums which are just declarations, because C++0x allows forward | |
16844 | enum declarations. */ | |
3019eac3 | 16845 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16846 | && die_is_declaration (die, cu)) |
16847 | { | |
52dc124a | 16848 | struct signatured_type *sig_type; |
6c83ed52 | 16849 | |
c0f78cd4 | 16850 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16851 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16852 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16853 | return; |
16854 | } | |
16855 | ||
f792889a | 16856 | new_symbol (die, this_type, cu); |
c906108c SS |
16857 | } |
16858 | ||
57567375 TT |
16859 | /* Helper function for quirk_ada_thick_pointer that examines a bounds |
16860 | expression for an index type and finds the corresponding field | |
16861 | offset in the hidden "P_BOUNDS" structure. Returns true on success | |
16862 | and updates *FIELD, false if it fails to recognize an | |
16863 | expression. */ | |
16864 | ||
16865 | static bool | |
16866 | recognize_bound_expression (struct die_info *die, enum dwarf_attribute name, | |
16867 | int *bounds_offset, struct field *field, | |
16868 | struct dwarf2_cu *cu) | |
16869 | { | |
16870 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16871 | if (attr == nullptr || !attr->form_is_block ()) | |
16872 | return false; | |
16873 | ||
16874 | const struct dwarf_block *block = attr->as_block (); | |
16875 | const gdb_byte *start = block->data; | |
16876 | const gdb_byte *end = block->data + block->size; | |
16877 | ||
16878 | /* The expression to recognize generally looks like: | |
16879 | ||
16880 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16881 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16882 | ||
16883 | However, the second "plus_uconst" may be missing: | |
16884 | ||
16885 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16886 | DW_OP_deref_size: 4) | |
16887 | ||
16888 | This happens when the field is at the start of the structure. | |
16889 | ||
16890 | Also, the final deref may not be sized: | |
16891 | ||
16892 | (DW_OP_push_object_address; DW_OP_plus_uconst: 4; DW_OP_deref; | |
16893 | DW_OP_deref) | |
16894 | ||
16895 | This happens when the size of the index type happens to be the | |
16896 | same as the architecture's word size. This can occur with or | |
16897 | without the second plus_uconst. */ | |
16898 | ||
16899 | if (end - start < 2) | |
16900 | return false; | |
16901 | if (*start++ != DW_OP_push_object_address) | |
16902 | return false; | |
16903 | if (*start++ != DW_OP_plus_uconst) | |
16904 | return false; | |
16905 | ||
16906 | uint64_t this_bound_off; | |
16907 | start = gdb_read_uleb128 (start, end, &this_bound_off); | |
16908 | if (start == nullptr || (int) this_bound_off != this_bound_off) | |
16909 | return false; | |
16910 | /* Update *BOUNDS_OFFSET if needed, or alternatively verify that it | |
16911 | is consistent among all bounds. */ | |
16912 | if (*bounds_offset == -1) | |
16913 | *bounds_offset = this_bound_off; | |
16914 | else if (*bounds_offset != this_bound_off) | |
16915 | return false; | |
16916 | ||
16917 | if (start == end || *start++ != DW_OP_deref) | |
16918 | return false; | |
16919 | ||
16920 | int offset = 0; | |
16921 | if (start ==end) | |
16922 | return false; | |
16923 | else if (*start == DW_OP_deref_size || *start == DW_OP_deref) | |
16924 | { | |
16925 | /* This means an offset of 0. */ | |
16926 | } | |
16927 | else if (*start++ != DW_OP_plus_uconst) | |
16928 | return false; | |
16929 | else | |
16930 | { | |
16931 | /* The size is the parameter to DW_OP_plus_uconst. */ | |
16932 | uint64_t val; | |
16933 | start = gdb_read_uleb128 (start, end, &val); | |
16934 | if (start == nullptr) | |
16935 | return false; | |
16936 | if ((int) val != val) | |
16937 | return false; | |
16938 | offset = val; | |
16939 | } | |
16940 | ||
16941 | if (start == end) | |
16942 | return false; | |
16943 | ||
16944 | uint64_t size; | |
16945 | if (*start == DW_OP_deref_size) | |
16946 | { | |
16947 | start = gdb_read_uleb128 (start + 1, end, &size); | |
16948 | if (start == nullptr) | |
16949 | return false; | |
16950 | } | |
16951 | else if (*start == DW_OP_deref) | |
16952 | { | |
16953 | size = cu->header.addr_size; | |
16954 | ++start; | |
16955 | } | |
16956 | else | |
16957 | return false; | |
16958 | ||
16959 | SET_FIELD_BITPOS (*field, 8 * offset); | |
16960 | if (size != TYPE_LENGTH (field->type ())) | |
16961 | FIELD_BITSIZE (*field) = 8 * size; | |
16962 | ||
16963 | return true; | |
16964 | } | |
16965 | ||
16966 | /* With -fgnat-encodings=minimal, gcc will emit some unusual DWARF for | |
16967 | some kinds of Ada arrays: | |
16968 | ||
16969 | <1><11db>: Abbrev Number: 7 (DW_TAG_array_type) | |
16970 | <11dc> DW_AT_name : (indirect string, offset: 0x1bb8): string | |
16971 | <11e0> DW_AT_data_location: 2 byte block: 97 6 | |
16972 | (DW_OP_push_object_address; DW_OP_deref) | |
16973 | <11e3> DW_AT_type : <0x1173> | |
16974 | <11e7> DW_AT_sibling : <0x1201> | |
16975 | <2><11eb>: Abbrev Number: 8 (DW_TAG_subrange_type) | |
16976 | <11ec> DW_AT_type : <0x1206> | |
16977 | <11f0> DW_AT_lower_bound : 6 byte block: 97 23 8 6 94 4 | |
16978 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16979 | DW_OP_deref_size: 4) | |
16980 | <11f7> DW_AT_upper_bound : 8 byte block: 97 23 8 6 23 4 94 4 | |
16981 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16982 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16983 | ||
16984 | This actually represents a "thick pointer", which is a structure | |
16985 | with two elements: one that is a pointer to the array data, and one | |
16986 | that is a pointer to another structure; this second structure holds | |
16987 | the array bounds. | |
16988 | ||
16989 | This returns a new type on success, or nullptr if this didn't | |
16990 | recognize the type. */ | |
16991 | ||
16992 | static struct type * | |
16993 | quirk_ada_thick_pointer (struct die_info *die, struct dwarf2_cu *cu, | |
16994 | struct type *type) | |
16995 | { | |
16996 | struct attribute *attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
16997 | /* So far we've only seen this with block form. */ | |
16998 | if (attr == nullptr || !attr->form_is_block ()) | |
16999 | return nullptr; | |
17000 | ||
17001 | /* Note that this will fail if the structure layout is changed by | |
17002 | the compiler. However, we have no good way to recognize some | |
17003 | other layout, because we don't know what expression the compiler | |
17004 | might choose to emit should this happen. */ | |
17005 | struct dwarf_block *blk = attr->as_block (); | |
17006 | if (blk->size != 2 | |
17007 | || blk->data[0] != DW_OP_push_object_address | |
17008 | || blk->data[1] != DW_OP_deref) | |
17009 | return nullptr; | |
17010 | ||
17011 | int bounds_offset = -1; | |
17012 | int max_align = -1; | |
17013 | std::vector<struct field> range_fields; | |
17014 | for (struct die_info *child_die = die->child; | |
17015 | child_die; | |
17016 | child_die = child_die->sibling) | |
17017 | { | |
17018 | if (child_die->tag == DW_TAG_subrange_type) | |
17019 | { | |
17020 | struct type *underlying = read_subrange_index_type (child_die, cu); | |
17021 | ||
17022 | int this_align = type_align (underlying); | |
17023 | if (this_align > max_align) | |
17024 | max_align = this_align; | |
17025 | ||
17026 | range_fields.emplace_back (); | |
17027 | range_fields.emplace_back (); | |
17028 | ||
17029 | struct field &lower = range_fields[range_fields.size () - 2]; | |
17030 | struct field &upper = range_fields[range_fields.size () - 1]; | |
17031 | ||
17032 | lower.set_type (underlying); | |
17033 | FIELD_ARTIFICIAL (lower) = 1; | |
17034 | ||
17035 | upper.set_type (underlying); | |
17036 | FIELD_ARTIFICIAL (upper) = 1; | |
17037 | ||
17038 | if (!recognize_bound_expression (child_die, DW_AT_lower_bound, | |
17039 | &bounds_offset, &lower, cu) | |
17040 | || !recognize_bound_expression (child_die, DW_AT_upper_bound, | |
17041 | &bounds_offset, &upper, cu)) | |
17042 | return nullptr; | |
17043 | } | |
17044 | } | |
17045 | ||
17046 | /* This shouldn't really happen, but double-check that we found | |
17047 | where the bounds are stored. */ | |
17048 | if (bounds_offset == -1) | |
17049 | return nullptr; | |
17050 | ||
17051 | struct objfile *objfile = cu->per_objfile->objfile; | |
17052 | for (int i = 0; i < range_fields.size (); i += 2) | |
17053 | { | |
17054 | char name[20]; | |
17055 | ||
17056 | /* Set the name of each field in the bounds. */ | |
17057 | xsnprintf (name, sizeof (name), "LB%d", i / 2); | |
17058 | FIELD_NAME (range_fields[i]) = objfile->intern (name); | |
17059 | xsnprintf (name, sizeof (name), "UB%d", i / 2); | |
17060 | FIELD_NAME (range_fields[i + 1]) = objfile->intern (name); | |
17061 | } | |
17062 | ||
17063 | struct type *bounds = alloc_type (objfile); | |
17064 | bounds->set_code (TYPE_CODE_STRUCT); | |
17065 | ||
17066 | bounds->set_num_fields (range_fields.size ()); | |
17067 | bounds->set_fields | |
17068 | ((struct field *) TYPE_ALLOC (bounds, (bounds->num_fields () | |
17069 | * sizeof (struct field)))); | |
17070 | memcpy (bounds->fields (), range_fields.data (), | |
17071 | bounds->num_fields () * sizeof (struct field)); | |
17072 | ||
17073 | int last_fieldno = range_fields.size () - 1; | |
17074 | int bounds_size = (TYPE_FIELD_BITPOS (bounds, last_fieldno) / 8 | |
17075 | + TYPE_LENGTH (bounds->field (last_fieldno).type ())); | |
17076 | TYPE_LENGTH (bounds) = align_up (bounds_size, max_align); | |
17077 | ||
17078 | /* Rewrite the existing array type in place. Specifically, we | |
17079 | remove any dynamic properties we might have read, and we replace | |
17080 | the index types. */ | |
17081 | struct type *iter = type; | |
17082 | for (int i = 0; i < range_fields.size (); i += 2) | |
17083 | { | |
17084 | gdb_assert (iter->code () == TYPE_CODE_ARRAY); | |
17085 | iter->main_type->dyn_prop_list = nullptr; | |
17086 | iter->set_index_type | |
17087 | (create_static_range_type (NULL, bounds->field (i).type (), 1, 0)); | |
17088 | iter = TYPE_TARGET_TYPE (iter); | |
17089 | } | |
17090 | ||
17091 | struct type *result = alloc_type (objfile); | |
17092 | result->set_code (TYPE_CODE_STRUCT); | |
17093 | ||
17094 | result->set_num_fields (2); | |
17095 | result->set_fields | |
17096 | ((struct field *) TYPE_ZALLOC (result, (result->num_fields () | |
17097 | * sizeof (struct field)))); | |
17098 | ||
17099 | /* The names are chosen to coincide with what the compiler does with | |
17100 | -fgnat-encodings=all, which the Ada code in gdb already | |
17101 | understands. */ | |
17102 | TYPE_FIELD_NAME (result, 0) = "P_ARRAY"; | |
17103 | result->field (0).set_type (lookup_pointer_type (type)); | |
17104 | ||
17105 | TYPE_FIELD_NAME (result, 1) = "P_BOUNDS"; | |
17106 | result->field (1).set_type (lookup_pointer_type (bounds)); | |
17107 | SET_FIELD_BITPOS (result->field (1), 8 * bounds_offset); | |
17108 | ||
17109 | result->set_name (type->name ()); | |
17110 | TYPE_LENGTH (result) = (TYPE_LENGTH (result->field (0).type ()) | |
17111 | + TYPE_LENGTH (result->field (1).type ())); | |
17112 | ||
17113 | return result; | |
17114 | } | |
17115 | ||
c906108c SS |
17116 | /* Extract all information from a DW_TAG_array_type DIE and put it in |
17117 | the DIE's type field. For now, this only handles one dimensional | |
17118 | arrays. */ | |
17119 | ||
f792889a | 17120 | static struct type * |
e7c27a73 | 17121 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17122 | { |
5e22e966 | 17123 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 17124 | struct die_info *child_die; |
7e314c57 | 17125 | struct type *type; |
c906108c | 17126 | struct type *element_type, *range_type, *index_type; |
c906108c | 17127 | struct attribute *attr; |
15d034d0 | 17128 | const char *name; |
a405673c | 17129 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 17130 | unsigned int bit_stride = 0; |
c906108c | 17131 | |
e7c27a73 | 17132 | element_type = die_type (die, cu); |
c906108c | 17133 | |
7e314c57 JK |
17134 | /* The die_type call above may have already set the type for this DIE. */ |
17135 | type = get_die_type (die, cu); | |
17136 | if (type) | |
17137 | return type; | |
17138 | ||
dc53a7ad JB |
17139 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
17140 | if (attr != NULL) | |
a405673c JB |
17141 | { |
17142 | int stride_ok; | |
293e7e51 | 17143 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
17144 | |
17145 | byte_stride_prop | |
17146 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
17147 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
17148 | prop_type); | |
a405673c JB |
17149 | if (!stride_ok) |
17150 | { | |
b98664d3 | 17151 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
17152 | " - DIE at %s [in module %s]"), |
17153 | sect_offset_str (die->sect_off), | |
5e22e966 | 17154 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
17155 | /* Ignore this attribute. We will likely not be able to print |
17156 | arrays of this type correctly, but there is little we can do | |
17157 | to help if we cannot read the attribute's value. */ | |
17158 | byte_stride_prop = NULL; | |
17159 | } | |
17160 | } | |
dc53a7ad JB |
17161 | |
17162 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17163 | if (attr != NULL) | |
529908cb | 17164 | bit_stride = attr->constant_value (0); |
dc53a7ad | 17165 | |
c906108c SS |
17166 | /* Irix 6.2 native cc creates array types without children for |
17167 | arrays with unspecified length. */ | |
639d11d3 | 17168 | if (die->child == NULL) |
c906108c | 17169 | { |
46bf5051 | 17170 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17171 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 17172 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 17173 | byte_stride_prop, bit_stride); |
f792889a | 17174 | return set_die_type (die, type, cu); |
c906108c SS |
17175 | } |
17176 | ||
791afaa2 | 17177 | std::vector<struct type *> range_types; |
639d11d3 | 17178 | child_die = die->child; |
c906108c SS |
17179 | while (child_die && child_die->tag) |
17180 | { | |
17181 | if (child_die->tag == DW_TAG_subrange_type) | |
17182 | { | |
f792889a | 17183 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 17184 | |
dda83cd7 SM |
17185 | if (child_type != NULL) |
17186 | { | |
0963b4bd | 17187 | /* The range type was succesfully read. Save it for the |
dda83cd7 | 17188 | array type creation. */ |
791afaa2 | 17189 | range_types.push_back (child_type); |
dda83cd7 | 17190 | } |
c906108c | 17191 | } |
436c571c | 17192 | child_die = child_die->sibling; |
c906108c SS |
17193 | } |
17194 | ||
17195 | /* Dwarf2 dimensions are output from left to right, create the | |
17196 | necessary array types in backwards order. */ | |
7ca2d3a3 | 17197 | |
c906108c | 17198 | type = element_type; |
7ca2d3a3 DL |
17199 | |
17200 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
17201 | { | |
17202 | int i = 0; | |
9a619af0 | 17203 | |
791afaa2 | 17204 | while (i < range_types.size ()) |
10f6a3ad TT |
17205 | { |
17206 | type = create_array_type_with_stride (NULL, type, range_types[i++], | |
17207 | byte_stride_prop, bit_stride); | |
17208 | bit_stride = 0; | |
17209 | byte_stride_prop = nullptr; | |
17210 | } | |
7ca2d3a3 DL |
17211 | } |
17212 | else | |
17213 | { | |
791afaa2 | 17214 | size_t ndim = range_types.size (); |
7ca2d3a3 | 17215 | while (ndim-- > 0) |
10f6a3ad TT |
17216 | { |
17217 | type = create_array_type_with_stride (NULL, type, range_types[ndim], | |
17218 | byte_stride_prop, bit_stride); | |
17219 | bit_stride = 0; | |
17220 | byte_stride_prop = nullptr; | |
17221 | } | |
7ca2d3a3 | 17222 | } |
c906108c | 17223 | |
f5f8a009 EZ |
17224 | /* Understand Dwarf2 support for vector types (like they occur on |
17225 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
17226 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
17227 | custom vendor extension. The main difference between a regular | |
17228 | array and the vector variant is that vectors are passed by value | |
17229 | to functions. */ | |
e142c38c | 17230 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 17231 | if (attr != nullptr) |
ea37ba09 | 17232 | make_vector_type (type); |
f5f8a009 | 17233 | |
dbc98a8b KW |
17234 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
17235 | implementation may choose to implement triple vectors using this | |
17236 | attribute. */ | |
17237 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb | 17238 | if (attr != nullptr && attr->form_is_unsigned ()) |
dbc98a8b | 17239 | { |
529908cb TT |
17240 | if (attr->as_unsigned () >= TYPE_LENGTH (type)) |
17241 | TYPE_LENGTH (type) = attr->as_unsigned (); | |
dbc98a8b | 17242 | else |
b98664d3 | 17243 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 17244 | "than the total size of elements")); |
dbc98a8b KW |
17245 | } |
17246 | ||
39cbfefa DJ |
17247 | name = dwarf2_name (die, cu); |
17248 | if (name) | |
d0e39ea2 | 17249 | type->set_name (name); |
6e70227d | 17250 | |
2b4424c3 TT |
17251 | maybe_set_alignment (cu, die, type); |
17252 | ||
57567375 TT |
17253 | struct type *replacement_type = nullptr; |
17254 | if (cu->language == language_ada) | |
17255 | { | |
17256 | replacement_type = quirk_ada_thick_pointer (die, cu, type); | |
17257 | if (replacement_type != nullptr) | |
17258 | type = replacement_type; | |
17259 | } | |
17260 | ||
0963b4bd | 17261 | /* Install the type in the die. */ |
57567375 | 17262 | set_die_type (die, type, cu, replacement_type != nullptr); |
7e314c57 JK |
17263 | |
17264 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17265 | set_descriptive_type (type, die, cu); |
17266 | ||
7e314c57 | 17267 | return type; |
c906108c SS |
17268 | } |
17269 | ||
7ca2d3a3 | 17270 | static enum dwarf_array_dim_ordering |
6e70227d | 17271 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
17272 | { |
17273 | struct attribute *attr; | |
17274 | ||
17275 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
17276 | ||
435d3d88 | 17277 | if (attr != nullptr) |
1bc397c5 TT |
17278 | { |
17279 | LONGEST val = attr->constant_value (-1); | |
17280 | if (val == DW_ORD_row_major || val == DW_ORD_col_major) | |
17281 | return (enum dwarf_array_dim_ordering) val; | |
17282 | } | |
7ca2d3a3 | 17283 | |
0963b4bd MS |
17284 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
17285 | opposite order to the dwarf2 specification, but data is still | |
17286 | laid out as per normal fortran. | |
7ca2d3a3 | 17287 | |
0963b4bd MS |
17288 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
17289 | version checking. */ | |
7ca2d3a3 | 17290 | |
905e0470 PM |
17291 | if (cu->language == language_fortran |
17292 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
17293 | { |
17294 | return DW_ORD_row_major; | |
17295 | } | |
17296 | ||
3a3440fb | 17297 | switch (cu->language_defn->array_ordering ()) |
7ca2d3a3 DL |
17298 | { |
17299 | case array_column_major: | |
17300 | return DW_ORD_col_major; | |
17301 | case array_row_major: | |
17302 | default: | |
17303 | return DW_ORD_row_major; | |
17304 | }; | |
17305 | } | |
17306 | ||
72019c9c | 17307 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 17308 | the DIE's type field. */ |
72019c9c | 17309 | |
f792889a | 17310 | static struct type * |
72019c9c GM |
17311 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
17312 | { | |
7e314c57 JK |
17313 | struct type *domain_type, *set_type; |
17314 | struct attribute *attr; | |
f792889a | 17315 | |
7e314c57 JK |
17316 | domain_type = die_type (die, cu); |
17317 | ||
17318 | /* The die_type call above may have already set the type for this DIE. */ | |
17319 | set_type = get_die_type (die, cu); | |
17320 | if (set_type) | |
17321 | return set_type; | |
17322 | ||
17323 | set_type = create_set_type (NULL, domain_type); | |
17324 | ||
17325 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb TT |
17326 | if (attr != nullptr && attr->form_is_unsigned ()) |
17327 | TYPE_LENGTH (set_type) = attr->as_unsigned (); | |
7e314c57 | 17328 | |
2b4424c3 TT |
17329 | maybe_set_alignment (cu, die, set_type); |
17330 | ||
f792889a | 17331 | return set_die_type (die, set_type, cu); |
72019c9c | 17332 | } |
7ca2d3a3 | 17333 | |
0971de02 TT |
17334 | /* A helper for read_common_block that creates a locexpr baton. |
17335 | SYM is the symbol which we are marking as computed. | |
17336 | COMMON_DIE is the DIE for the common block. | |
17337 | COMMON_LOC is the location expression attribute for the common | |
17338 | block itself. | |
17339 | MEMBER_LOC is the location expression attribute for the particular | |
17340 | member of the common block that we are processing. | |
17341 | CU is the CU from which the above come. */ | |
17342 | ||
17343 | static void | |
17344 | mark_common_block_symbol_computed (struct symbol *sym, | |
17345 | struct die_info *common_die, | |
17346 | struct attribute *common_loc, | |
17347 | struct attribute *member_loc, | |
17348 | struct dwarf2_cu *cu) | |
17349 | { | |
5e22e966 | 17350 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 17351 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
17352 | struct dwarf2_locexpr_baton *baton; |
17353 | gdb_byte *ptr; | |
17354 | unsigned int cu_off; | |
08feed99 | 17355 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
17356 | LONGEST offset = 0; |
17357 | ||
17358 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
17359 | gdb_assert (common_loc->form_is_block ()); |
17360 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 17361 | || member_loc->form_is_constant ()); |
0971de02 | 17362 | |
8d749320 | 17363 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 17364 | baton->per_objfile = per_objfile; |
0971de02 TT |
17365 | baton->per_cu = cu->per_cu; |
17366 | gdb_assert (baton->per_cu); | |
17367 | ||
17368 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
17369 | ||
cd6c91b4 | 17370 | if (member_loc->form_is_constant ()) |
0971de02 | 17371 | { |
0826b30a | 17372 | offset = member_loc->constant_value (0); |
0971de02 TT |
17373 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
17374 | } | |
17375 | else | |
9d2246fc | 17376 | baton->size += member_loc->as_block ()->size; |
0971de02 | 17377 | |
224c3ddb | 17378 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
17379 | baton->data = ptr; |
17380 | ||
17381 | *ptr++ = DW_OP_call4; | |
9c541725 | 17382 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
17383 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
17384 | ptr += 4; | |
17385 | ||
cd6c91b4 | 17386 | if (member_loc->form_is_constant ()) |
0971de02 TT |
17387 | { |
17388 | *ptr++ = DW_OP_addr; | |
17389 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
17390 | ptr += cu->header.addr_size; | |
17391 | } | |
17392 | else | |
17393 | { | |
17394 | /* We have to copy the data here, because DW_OP_call4 will only | |
17395 | use a DW_AT_location attribute. */ | |
9d2246fc TT |
17396 | struct dwarf_block *block = member_loc->as_block (); |
17397 | memcpy (ptr, block->data, block->size); | |
17398 | ptr += block->size; | |
0971de02 TT |
17399 | } |
17400 | ||
17401 | *ptr++ = DW_OP_plus; | |
17402 | gdb_assert (ptr - baton->data == baton->size); | |
17403 | ||
0971de02 | 17404 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17405 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
17406 | } |
17407 | ||
4357ac6c TT |
17408 | /* Create appropriate locally-scoped variables for all the |
17409 | DW_TAG_common_block entries. Also create a struct common_block | |
17410 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 17411 | is used to separate the common blocks name namespace from regular |
4357ac6c | 17412 | variable names. */ |
c906108c SS |
17413 | |
17414 | static void | |
e7c27a73 | 17415 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17416 | { |
0971de02 TT |
17417 | struct attribute *attr; |
17418 | ||
17419 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 17420 | if (attr != nullptr) |
0971de02 TT |
17421 | { |
17422 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 17423 | if (attr->form_is_block ()) |
dda83cd7 | 17424 | { |
0971de02 | 17425 | /* Ok. */ |
dda83cd7 | 17426 | } |
cd6c91b4 | 17427 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 17428 | { |
0971de02 TT |
17429 | dwarf2_complex_location_expr_complaint (); |
17430 | attr = NULL; | |
dda83cd7 | 17431 | } |
0971de02 | 17432 | else |
dda83cd7 | 17433 | { |
0971de02 TT |
17434 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17435 | "common block member"); | |
17436 | attr = NULL; | |
dda83cd7 | 17437 | } |
0971de02 TT |
17438 | } |
17439 | ||
639d11d3 | 17440 | if (die->child != NULL) |
c906108c | 17441 | { |
5e22e966 | 17442 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
17443 | struct die_info *child_die; |
17444 | size_t n_entries = 0, size; | |
17445 | struct common_block *common_block; | |
17446 | struct symbol *sym; | |
74ac6d43 | 17447 | |
4357ac6c TT |
17448 | for (child_die = die->child; |
17449 | child_die && child_die->tag; | |
436c571c | 17450 | child_die = child_die->sibling) |
4357ac6c TT |
17451 | ++n_entries; |
17452 | ||
17453 | size = (sizeof (struct common_block) | |
17454 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17455 | common_block |
17456 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17457 | size); | |
4357ac6c TT |
17458 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17459 | common_block->n_entries = 0; | |
17460 | ||
17461 | for (child_die = die->child; | |
17462 | child_die && child_die->tag; | |
436c571c | 17463 | child_die = child_die->sibling) |
4357ac6c TT |
17464 | { |
17465 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17466 | symbol scope. */ | |
e7c27a73 | 17467 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17468 | if (sym != NULL) |
17469 | { | |
17470 | struct attribute *member_loc; | |
17471 | ||
17472 | common_block->contents[common_block->n_entries++] = sym; | |
17473 | ||
17474 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17475 | cu); | |
17476 | if (member_loc) | |
17477 | { | |
17478 | /* GDB has handled this for a long time, but it is | |
17479 | not specified by DWARF. It seems to have been | |
17480 | emitted by gfortran at least as recently as: | |
17481 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 17482 | complaint (_("Variable in common block has " |
0971de02 | 17483 | "DW_AT_data_member_location " |
9d8780f0 SM |
17484 | "- DIE at %s [in module %s]"), |
17485 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17486 | objfile_name (objfile)); |
0971de02 | 17487 | |
cd6c91b4 | 17488 | if (member_loc->form_is_section_offset ()) |
0971de02 | 17489 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 17490 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 17491 | || member_loc->form_is_block ()) |
0971de02 | 17492 | { |
435d3d88 | 17493 | if (attr != nullptr) |
0971de02 TT |
17494 | mark_common_block_symbol_computed (sym, die, attr, |
17495 | member_loc, cu); | |
17496 | } | |
17497 | else | |
17498 | dwarf2_complex_location_expr_complaint (); | |
17499 | } | |
17500 | } | |
c906108c | 17501 | } |
4357ac6c TT |
17502 | |
17503 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17504 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17505 | } |
17506 | } | |
17507 | ||
0114d602 | 17508 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17509 | |
0114d602 DJ |
17510 | static struct type * |
17511 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17512 | { |
5e22e966 | 17513 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17514 | const char *previous_prefix, *name; |
9219021c | 17515 | int is_anonymous; |
0114d602 DJ |
17516 | struct type *type; |
17517 | ||
17518 | /* For extensions, reuse the type of the original namespace. */ | |
17519 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17520 | { | |
17521 | struct die_info *ext_die; | |
17522 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17523 | |
0114d602 DJ |
17524 | ext_die = dwarf2_extension (die, &ext_cu); |
17525 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17526 | |
17527 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17528 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17529 | return set_die_type (die, type, cu); |
17530 | } | |
9219021c | 17531 | |
e142c38c | 17532 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17533 | |
17534 | /* Now build the name of the current namespace. */ | |
17535 | ||
0114d602 DJ |
17536 | previous_prefix = determine_prefix (die, cu); |
17537 | if (previous_prefix[0] != '\0') | |
17538 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17539 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17540 | |
17541 | /* Create the type. */ | |
19f392bc | 17542 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 17543 | |
60531b24 | 17544 | return set_die_type (die, type, cu); |
0114d602 DJ |
17545 | } |
17546 | ||
22cee43f | 17547 | /* Read a namespace scope. */ |
0114d602 DJ |
17548 | |
17549 | static void | |
17550 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17551 | { | |
5e22e966 | 17552 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17553 | int is_anonymous; |
9219021c | 17554 | |
5c4e30ca DC |
17555 | /* Add a symbol associated to this if we haven't seen the namespace |
17556 | before. Also, add a using directive if it's an anonymous | |
17557 | namespace. */ | |
9219021c | 17558 | |
f2f0e013 | 17559 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17560 | { |
17561 | struct type *type; | |
17562 | ||
0114d602 | 17563 | type = read_type_die (die, cu); |
e7c27a73 | 17564 | new_symbol (die, type, cu); |
5c4e30ca | 17565 | |
e8e80198 | 17566 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17567 | if (is_anonymous) |
0114d602 DJ |
17568 | { |
17569 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17570 | |
eb1e02fd | 17571 | std::vector<const char *> excludes; |
804d2729 | 17572 | add_using_directive (using_directives (cu), |
7d93a1e0 | 17573 | previous_prefix, type->name (), NULL, |
eb1e02fd | 17574 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17575 | } |
5c4e30ca | 17576 | } |
9219021c | 17577 | |
639d11d3 | 17578 | if (die->child != NULL) |
d9fa45fe | 17579 | { |
639d11d3 | 17580 | struct die_info *child_die = die->child; |
6e70227d | 17581 | |
d9fa45fe DC |
17582 | while (child_die && child_die->tag) |
17583 | { | |
e7c27a73 | 17584 | process_die (child_die, cu); |
436c571c | 17585 | child_die = child_die->sibling; |
d9fa45fe DC |
17586 | } |
17587 | } | |
38d518c9 EZ |
17588 | } |
17589 | ||
f55ee35c JK |
17590 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17591 | imported module. Still we need that type as local Fortran "use ... only" | |
17592 | declaration imports depend on the created type in determine_prefix. */ | |
17593 | ||
17594 | static struct type * | |
17595 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17596 | { | |
5e22e966 | 17597 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 17598 | const char *module_name; |
f55ee35c JK |
17599 | struct type *type; |
17600 | ||
17601 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17602 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17603 | |
f55ee35c JK |
17604 | return set_die_type (die, type, cu); |
17605 | } | |
17606 | ||
5d7cb8df JK |
17607 | /* Read a Fortran module. */ |
17608 | ||
17609 | static void | |
17610 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17611 | { | |
17612 | struct die_info *child_die = die->child; | |
530e8392 KB |
17613 | struct type *type; |
17614 | ||
17615 | type = read_type_die (die, cu); | |
17616 | new_symbol (die, type, cu); | |
5d7cb8df | 17617 | |
5d7cb8df JK |
17618 | while (child_die && child_die->tag) |
17619 | { | |
17620 | process_die (child_die, cu); | |
436c571c | 17621 | child_die = child_die->sibling; |
5d7cb8df JK |
17622 | } |
17623 | } | |
17624 | ||
38d518c9 EZ |
17625 | /* Return the name of the namespace represented by DIE. Set |
17626 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17627 | namespace. */ | |
17628 | ||
17629 | static const char * | |
e142c38c | 17630 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17631 | { |
17632 | struct die_info *current_die; | |
17633 | const char *name = NULL; | |
17634 | ||
17635 | /* Loop through the extensions until we find a name. */ | |
17636 | ||
17637 | for (current_die = die; | |
17638 | current_die != NULL; | |
f2f0e013 | 17639 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17640 | { |
96553a0c DE |
17641 | /* We don't use dwarf2_name here so that we can detect the absence |
17642 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17643 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17644 | |
38d518c9 EZ |
17645 | if (name != NULL) |
17646 | break; | |
17647 | } | |
17648 | ||
17649 | /* Is it an anonymous namespace? */ | |
17650 | ||
17651 | *is_anonymous = (name == NULL); | |
17652 | if (*is_anonymous) | |
2b1dbab0 | 17653 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17654 | |
17655 | return name; | |
d9fa45fe DC |
17656 | } |
17657 | ||
c906108c SS |
17658 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17659 | the user defined type vector. */ | |
17660 | ||
f792889a | 17661 | static struct type * |
e7c27a73 | 17662 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17663 | { |
5e22e966 | 17664 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 17665 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17666 | struct type *type; |
8b2dbe47 KB |
17667 | struct attribute *attr_byte_size; |
17668 | struct attribute *attr_address_class; | |
17669 | int byte_size, addr_class; | |
7e314c57 JK |
17670 | struct type *target_type; |
17671 | ||
17672 | target_type = die_type (die, cu); | |
c906108c | 17673 | |
7e314c57 JK |
17674 | /* The die_type call above may have already set the type for this DIE. */ |
17675 | type = get_die_type (die, cu); | |
17676 | if (type) | |
17677 | return type; | |
17678 | ||
17679 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17680 | |
e142c38c | 17681 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 | 17682 | if (attr_byte_size) |
529908cb | 17683 | byte_size = attr_byte_size->constant_value (cu_header->addr_size); |
c906108c | 17684 | else |
8b2dbe47 KB |
17685 | byte_size = cu_header->addr_size; |
17686 | ||
e142c38c | 17687 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 | 17688 | if (attr_address_class) |
529908cb | 17689 | addr_class = attr_address_class->constant_value (DW_ADDR_none); |
8b2dbe47 KB |
17690 | else |
17691 | addr_class = DW_ADDR_none; | |
17692 | ||
2b4424c3 TT |
17693 | ULONGEST alignment = get_alignment (cu, die); |
17694 | ||
17695 | /* If the pointer size, alignment, or address class is different | |
17696 | than the default, create a type variant marked as such and set | |
17697 | the length accordingly. */ | |
17698 | if (TYPE_LENGTH (type) != byte_size | |
17699 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17700 | && alignment != TYPE_RAW_ALIGN (type)) | |
17701 | || addr_class != DW_ADDR_none) | |
c906108c | 17702 | { |
5e2b427d | 17703 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 | 17704 | { |
314ad88d PA |
17705 | type_instance_flags type_flags |
17706 | = gdbarch_address_class_type_flags (gdbarch, byte_size, | |
17707 | addr_class); | |
876cecd0 TT |
17708 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17709 | == 0); | |
8b2dbe47 KB |
17710 | type = make_type_with_address_space (type, type_flags); |
17711 | } | |
17712 | else if (TYPE_LENGTH (type) != byte_size) | |
17713 | { | |
b98664d3 | 17714 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17715 | } |
2b4424c3 TT |
17716 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17717 | { | |
b98664d3 | 17718 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17719 | " - DIE at %s [in module %s]"), |
17720 | sect_offset_str (die->sect_off), | |
5e22e966 | 17721 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 17722 | } |
6e70227d | 17723 | else |
9a619af0 MS |
17724 | { |
17725 | /* Should we also complain about unhandled address classes? */ | |
17726 | } | |
c906108c | 17727 | } |
8b2dbe47 KB |
17728 | |
17729 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17730 | set_type_align (type, alignment); |
f792889a | 17731 | return set_die_type (die, type, cu); |
c906108c SS |
17732 | } |
17733 | ||
17734 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17735 | the user defined type vector. */ | |
17736 | ||
f792889a | 17737 | static struct type * |
e7c27a73 | 17738 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17739 | { |
17740 | struct type *type; | |
17741 | struct type *to_type; | |
17742 | struct type *domain; | |
17743 | ||
e7c27a73 DJ |
17744 | to_type = die_type (die, cu); |
17745 | domain = die_containing_type (die, cu); | |
0d5de010 | 17746 | |
7e314c57 JK |
17747 | /* The calls above may have already set the type for this DIE. */ |
17748 | type = get_die_type (die, cu); | |
17749 | if (type) | |
17750 | return type; | |
17751 | ||
78134374 | 17752 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 17753 | type = lookup_methodptr_type (to_type); |
78134374 | 17754 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 17755 | { |
5e22e966 | 17756 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
17757 | |
17758 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 17759 | to_type->fields (), to_type->num_fields (), |
a409645d | 17760 | to_type->has_varargs ()); |
7078baeb TT |
17761 | type = lookup_methodptr_type (new_type); |
17762 | } | |
0d5de010 DJ |
17763 | else |
17764 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17765 | |
f792889a | 17766 | return set_die_type (die, type, cu); |
c906108c SS |
17767 | } |
17768 | ||
4297a3f0 | 17769 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17770 | the user defined type vector. */ |
17771 | ||
f792889a | 17772 | static struct type * |
4297a3f0 | 17773 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
dda83cd7 | 17774 | enum type_code refcode) |
c906108c | 17775 | { |
e7c27a73 | 17776 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17777 | struct type *type, *target_type; |
c906108c SS |
17778 | struct attribute *attr; |
17779 | ||
4297a3f0 AV |
17780 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17781 | ||
7e314c57 JK |
17782 | target_type = die_type (die, cu); |
17783 | ||
17784 | /* The die_type call above may have already set the type for this DIE. */ | |
17785 | type = get_die_type (die, cu); | |
17786 | if (type) | |
17787 | return type; | |
17788 | ||
4297a3f0 | 17789 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17790 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17791 | if (attr != nullptr) |
c906108c | 17792 | { |
529908cb | 17793 | TYPE_LENGTH (type) = attr->constant_value (cu_header->addr_size); |
c906108c SS |
17794 | } |
17795 | else | |
17796 | { | |
107d2387 | 17797 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17798 | } |
2b4424c3 | 17799 | maybe_set_alignment (cu, die, type); |
f792889a | 17800 | return set_die_type (die, type, cu); |
c906108c SS |
17801 | } |
17802 | ||
cf363f18 MW |
17803 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17804 | outputs DWARF type qualifiers that apply to an array, not the | |
17805 | element type. But GDB relies on the array element type to carry | |
17806 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17807 | specification. */ | |
17808 | ||
17809 | static struct type * | |
17810 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17811 | struct type *base_type, int cnst, int voltl) | |
17812 | { | |
17813 | struct type *el_type, *inner_array; | |
17814 | ||
17815 | base_type = copy_type (base_type); | |
17816 | inner_array = base_type; | |
17817 | ||
78134374 | 17818 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17819 | { |
17820 | TYPE_TARGET_TYPE (inner_array) = | |
17821 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17822 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17823 | } | |
17824 | ||
17825 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17826 | cnst |= TYPE_CONST (el_type); | |
17827 | voltl |= TYPE_VOLATILE (el_type); | |
17828 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17829 | ||
17830 | return set_die_type (die, base_type, cu); | |
17831 | } | |
17832 | ||
f792889a | 17833 | static struct type * |
e7c27a73 | 17834 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17835 | { |
f792889a | 17836 | struct type *base_type, *cv_type; |
c906108c | 17837 | |
e7c27a73 | 17838 | base_type = die_type (die, cu); |
7e314c57 JK |
17839 | |
17840 | /* The die_type call above may have already set the type for this DIE. */ | |
17841 | cv_type = get_die_type (die, cu); | |
17842 | if (cv_type) | |
17843 | return cv_type; | |
17844 | ||
2f608a3a KW |
17845 | /* In case the const qualifier is applied to an array type, the element type |
17846 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 17847 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 17848 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17849 | |
f792889a DJ |
17850 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17851 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17852 | } |
17853 | ||
f792889a | 17854 | static struct type * |
e7c27a73 | 17855 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17856 | { |
f792889a | 17857 | struct type *base_type, *cv_type; |
c906108c | 17858 | |
e7c27a73 | 17859 | base_type = die_type (die, cu); |
7e314c57 JK |
17860 | |
17861 | /* The die_type call above may have already set the type for this DIE. */ | |
17862 | cv_type = get_die_type (die, cu); | |
17863 | if (cv_type) | |
17864 | return cv_type; | |
17865 | ||
cf363f18 MW |
17866 | /* In case the volatile qualifier is applied to an array type, the |
17867 | element type is so qualified, not the array type (section 6.7.3 | |
17868 | of C99). */ | |
78134374 | 17869 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17870 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17871 | ||
f792889a DJ |
17872 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17873 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17874 | } |
17875 | ||
06d66ee9 TT |
17876 | /* Handle DW_TAG_restrict_type. */ |
17877 | ||
17878 | static struct type * | |
17879 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17880 | { | |
17881 | struct type *base_type, *cv_type; | |
17882 | ||
17883 | base_type = die_type (die, cu); | |
17884 | ||
17885 | /* The die_type call above may have already set the type for this DIE. */ | |
17886 | cv_type = get_die_type (die, cu); | |
17887 | if (cv_type) | |
17888 | return cv_type; | |
17889 | ||
17890 | cv_type = make_restrict_type (base_type); | |
17891 | return set_die_type (die, cv_type, cu); | |
17892 | } | |
17893 | ||
a2c2acaf MW |
17894 | /* Handle DW_TAG_atomic_type. */ |
17895 | ||
17896 | static struct type * | |
17897 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17898 | { | |
17899 | struct type *base_type, *cv_type; | |
17900 | ||
17901 | base_type = die_type (die, cu); | |
17902 | ||
17903 | /* The die_type call above may have already set the type for this DIE. */ | |
17904 | cv_type = get_die_type (die, cu); | |
17905 | if (cv_type) | |
17906 | return cv_type; | |
17907 | ||
17908 | cv_type = make_atomic_type (base_type); | |
17909 | return set_die_type (die, cv_type, cu); | |
17910 | } | |
17911 | ||
c906108c SS |
17912 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17913 | the user defined type vector. It isn't really a user defined type, | |
17914 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17915 | attribute to reference it. */ | |
17916 | ||
f792889a | 17917 | static struct type * |
e7c27a73 | 17918 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17919 | { |
5e22e966 | 17920 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17921 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17922 | struct type *type, *range_type, *index_type, *char_type; |
17923 | struct attribute *attr; | |
216a7e6b AB |
17924 | struct dynamic_prop prop; |
17925 | bool length_is_constant = true; | |
17926 | LONGEST length; | |
17927 | ||
17928 | /* There are a couple of places where bit sizes might be made use of | |
17929 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17930 | of make use of these. Handling bit sizes that are a multiple of the | |
17931 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17932 | with that problem when we have to. Warn about these attributes being | |
17933 | unsupported, then parse the type and ignore them like we always | |
17934 | have. */ | |
17935 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17936 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17937 | { | |
17938 | static bool warning_printed = false; | |
17939 | if (!warning_printed) | |
17940 | { | |
17941 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17942 | "currently supported on DW_TAG_string_type.")); | |
17943 | warning_printed = true; | |
17944 | } | |
17945 | } | |
c906108c | 17946 | |
e142c38c | 17947 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17948 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17949 | { |
17950 | /* The string length describes the location at which the length of | |
17951 | the string can be found. The size of the length field can be | |
17952 | specified with one of the attributes below. */ | |
17953 | struct type *prop_type; | |
17954 | struct attribute *len | |
17955 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17956 | if (len == nullptr) | |
17957 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17958 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17959 | { |
17960 | /* Pass 0 as the default as we know this attribute is constant | |
17961 | and the default value will not be returned. */ | |
0826b30a | 17962 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17963 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17964 | } |
17965 | else | |
17966 | { | |
17967 | /* If the size is not specified then we assume it is the size of | |
17968 | an address on this target. */ | |
293e7e51 | 17969 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17970 | } |
17971 | ||
17972 | /* Convert the attribute into a dynamic property. */ | |
17973 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17974 | length = 1; | |
17975 | else | |
17976 | length_is_constant = false; | |
17977 | } | |
17978 | else if (attr != nullptr) | |
17979 | { | |
17980 | /* This DW_AT_string_length just contains the length with no | |
17981 | indirection. There's no need to create a dynamic property in this | |
17982 | case. Pass 0 for the default value as we know it will not be | |
17983 | returned in this case. */ | |
0826b30a | 17984 | length = attr->constant_value (0); |
216a7e6b AB |
17985 | } |
17986 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17987 | { |
216a7e6b | 17988 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17989 | length = attr->constant_value (1); |
c906108c SS |
17990 | } |
17991 | else | |
17992 | { | |
216a7e6b AB |
17993 | /* Use 1 as a fallback length if we have nothing else. */ |
17994 | length = 1; | |
c906108c | 17995 | } |
6ccb9162 | 17996 | |
46bf5051 | 17997 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17998 | if (length_is_constant) |
17999 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
18000 | else | |
18001 | { | |
18002 | struct dynamic_prop low_bound; | |
18003 | ||
8c2e4e06 | 18004 | low_bound.set_const_val (1); |
216a7e6b AB |
18005 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); |
18006 | } | |
3b7538c0 UW |
18007 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
18008 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 18009 | |
f792889a | 18010 | return set_die_type (die, type, cu); |
c906108c SS |
18011 | } |
18012 | ||
4d804846 JB |
18013 | /* Assuming that DIE corresponds to a function, returns nonzero |
18014 | if the function is prototyped. */ | |
18015 | ||
18016 | static int | |
18017 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
18018 | { | |
18019 | struct attribute *attr; | |
18020 | ||
18021 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
c45bc3f8 | 18022 | if (attr && attr->as_boolean ()) |
4d804846 JB |
18023 | return 1; |
18024 | ||
18025 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 18026 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
18027 | languages that allow unprototyped functions (Eg: Objective C). |
18028 | For all other languages, assume that functions are always | |
18029 | prototyped. */ | |
18030 | if (cu->language != language_c | |
18031 | && cu->language != language_objc | |
18032 | && cu->language != language_opencl) | |
18033 | return 1; | |
18034 | ||
18035 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
18036 | prototyped and unprototyped functions; default to prototyped, | |
18037 | since that is more common in modern code (and RealView warns | |
18038 | about unprototyped functions). */ | |
18039 | if (producer_is_realview (cu->producer)) | |
18040 | return 1; | |
18041 | ||
18042 | return 0; | |
18043 | } | |
18044 | ||
c906108c SS |
18045 | /* Handle DIES due to C code like: |
18046 | ||
18047 | struct foo | |
c5aa993b JM |
18048 | { |
18049 | int (*funcp)(int a, long l); | |
18050 | int b; | |
18051 | }; | |
c906108c | 18052 | |
0963b4bd | 18053 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 18054 | |
f792889a | 18055 | static struct type * |
e7c27a73 | 18056 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18057 | { |
5e22e966 | 18058 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
18059 | struct type *type; /* Type that this function returns. */ |
18060 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
18061 | struct attribute *attr; |
18062 | ||
e7c27a73 | 18063 | type = die_type (die, cu); |
7e314c57 JK |
18064 | |
18065 | /* The die_type call above may have already set the type for this DIE. */ | |
18066 | ftype = get_die_type (die, cu); | |
18067 | if (ftype) | |
18068 | return ftype; | |
18069 | ||
0c8b41f1 | 18070 | ftype = lookup_function_type (type); |
c906108c | 18071 | |
4d804846 | 18072 | if (prototyped_function_p (die, cu)) |
27e69b7a | 18073 | ftype->set_is_prototyped (true); |
c906108c | 18074 | |
c055b101 CV |
18075 | /* Store the calling convention in the type if it's available in |
18076 | the subroutine die. Otherwise set the calling convention to | |
18077 | the default value DW_CC_normal. */ | |
18078 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf | 18079 | if (attr != nullptr |
529908cb | 18080 | && is_valid_DW_AT_calling_convention_for_subroutine (attr->constant_value (0))) |
d0922fcf | 18081 | TYPE_CALLING_CONVENTION (ftype) |
529908cb | 18082 | = (enum dwarf_calling_convention) attr->constant_value (0); |
54fcddd0 UW |
18083 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
18084 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
18085 | else | |
18086 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 18087 | |
743649fd MW |
18088 | /* Record whether the function returns normally to its caller or not |
18089 | if the DWARF producer set that information. */ | |
18090 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
c45bc3f8 | 18091 | if (attr && attr->as_boolean ()) |
743649fd MW |
18092 | TYPE_NO_RETURN (ftype) = 1; |
18093 | ||
76c10ea2 GM |
18094 | /* We need to add the subroutine type to the die immediately so |
18095 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 18096 | declared as the same subroutine type. */ |
76c10ea2 | 18097 | set_die_type (die, ftype, cu); |
6e70227d | 18098 | |
639d11d3 | 18099 | if (die->child != NULL) |
c906108c | 18100 | { |
bb5ed363 | 18101 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 18102 | struct die_info *child_die; |
8072405b | 18103 | int nparams, iparams; |
c906108c SS |
18104 | |
18105 | /* Count the number of parameters. | |
dda83cd7 SM |
18106 | FIXME: GDB currently ignores vararg functions, but knows about |
18107 | vararg member functions. */ | |
8072405b | 18108 | nparams = 0; |
639d11d3 | 18109 | child_die = die->child; |
c906108c SS |
18110 | while (child_die && child_die->tag) |
18111 | { | |
18112 | if (child_die->tag == DW_TAG_formal_parameter) | |
18113 | nparams++; | |
18114 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
1d6286ed SM |
18115 | ftype->set_has_varargs (true); |
18116 | ||
436c571c | 18117 | child_die = child_die->sibling; |
c906108c SS |
18118 | } |
18119 | ||
18120 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 18121 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
18122 | ftype->set_fields |
18123 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 18124 | |
8072405b JK |
18125 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
18126 | even if we error out during the parameters reading below. */ | |
18127 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 18128 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
18129 | |
18130 | iparams = 0; | |
639d11d3 | 18131 | child_die = die->child; |
c906108c SS |
18132 | while (child_die && child_die->tag) |
18133 | { | |
18134 | if (child_die->tag == DW_TAG_formal_parameter) | |
18135 | { | |
3ce3b1ba PA |
18136 | struct type *arg_type; |
18137 | ||
18138 | /* DWARF version 2 has no clean way to discern C++ | |
18139 | static and non-static member functions. G++ helps | |
18140 | GDB by marking the first parameter for non-static | |
18141 | member functions (which is the this pointer) as | |
18142 | artificial. We pass this information to | |
18143 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
18144 | ||
18145 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
18146 | 4.5 does not yet generate. */ | |
e142c38c | 18147 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 18148 | if (attr != nullptr) |
c45bc3f8 | 18149 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = attr->as_boolean (); |
c906108c | 18150 | else |
9c37b5ae | 18151 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
18152 | arg_type = die_type (child_die, cu); |
18153 | ||
18154 | /* RealView does not mark THIS as const, which the testsuite | |
18155 | expects. GCC marks THIS as const in method definitions, | |
18156 | but not in the class specifications (GCC PR 43053). */ | |
18157 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
18158 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
18159 | { | |
18160 | int is_this = 0; | |
18161 | struct dwarf2_cu *arg_cu = cu; | |
18162 | const char *name = dwarf2_name (child_die, cu); | |
18163 | ||
18164 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 18165 | if (attr != nullptr) |
3ce3b1ba PA |
18166 | { |
18167 | /* If the compiler emits this, use it. */ | |
18168 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
18169 | is_this = 1; | |
18170 | } | |
18171 | else if (name && strcmp (name, "this") == 0) | |
18172 | /* Function definitions will have the argument names. */ | |
18173 | is_this = 1; | |
18174 | else if (name == NULL && iparams == 0) | |
18175 | /* Declarations may not have the names, so like | |
18176 | elsewhere in GDB, assume an artificial first | |
18177 | argument is "this". */ | |
18178 | is_this = 1; | |
18179 | ||
18180 | if (is_this) | |
18181 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
18182 | arg_type, 0); | |
18183 | } | |
18184 | ||
5d14b6e5 | 18185 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
18186 | iparams++; |
18187 | } | |
436c571c | 18188 | child_die = child_die->sibling; |
c906108c SS |
18189 | } |
18190 | } | |
18191 | ||
76c10ea2 | 18192 | return ftype; |
c906108c SS |
18193 | } |
18194 | ||
f792889a | 18195 | static struct type * |
e7c27a73 | 18196 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18197 | { |
5e22e966 | 18198 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 18199 | const char *name = NULL; |
3c8e0968 | 18200 | struct type *this_type, *target_type; |
c906108c | 18201 | |
94af9270 | 18202 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc | 18203 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
8f53807e | 18204 | this_type->set_target_is_stub (true); |
f792889a | 18205 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
18206 | target_type = die_type (die, cu); |
18207 | if (target_type != this_type) | |
18208 | TYPE_TARGET_TYPE (this_type) = target_type; | |
18209 | else | |
18210 | { | |
18211 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
18212 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 18213 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
18214 | "- DIE at %s [in module %s]"), |
18215 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
18216 | TYPE_TARGET_TYPE (this_type) = NULL; |
18217 | } | |
e4003a34 TV |
18218 | if (name == NULL) |
18219 | { | |
18220 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
18221 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
18222 | Handle these by just returning the target type, rather than | |
18223 | constructing an anonymous typedef type and trying to handle this | |
18224 | elsewhere. */ | |
18225 | set_die_type (die, target_type, cu); | |
18226 | return target_type; | |
18227 | } | |
f792889a | 18228 | return this_type; |
c906108c SS |
18229 | } |
18230 | ||
a625a8c9 TT |
18231 | /* Helper for get_dwarf2_rational_constant that computes the value of |
18232 | a given gmp_mpz given an attribute. */ | |
18233 | ||
18234 | static void | |
18235 | get_mpz (struct dwarf2_cu *cu, gdb_mpz *value, struct attribute *attr) | |
18236 | { | |
18237 | /* GCC will sometimes emit a 16-byte constant value as a DWARF | |
18238 | location expression that pushes an implicit value. */ | |
18239 | if (attr->form == DW_FORM_exprloc) | |
18240 | { | |
18241 | dwarf_block *blk = attr->as_block (); | |
18242 | if (blk->size > 0 && blk->data[0] == DW_OP_implicit_value) | |
18243 | { | |
18244 | uint64_t len; | |
18245 | const gdb_byte *ptr = safe_read_uleb128 (blk->data + 1, | |
18246 | blk->data + blk->size, | |
18247 | &len); | |
18248 | if (ptr - blk->data + len <= blk->size) | |
18249 | { | |
18250 | mpz_import (value->val, len, | |
18251 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
18252 | 1, 0, 0, ptr); | |
18253 | return; | |
18254 | } | |
18255 | } | |
18256 | ||
18257 | /* On failure set it to 1. */ | |
18258 | *value = gdb_mpz (1); | |
18259 | } | |
18260 | else if (attr->form_is_block ()) | |
18261 | { | |
18262 | dwarf_block *blk = attr->as_block (); | |
18263 | mpz_import (value->val, blk->size, | |
18264 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
18265 | 1, 0, 0, blk->data); | |
18266 | } | |
18267 | else | |
18268 | *value = gdb_mpz (attr->constant_value (1)); | |
18269 | } | |
18270 | ||
09584414 JB |
18271 | /* Assuming DIE is a rational DW_TAG_constant, read the DIE's |
18272 | numerator and denominator into NUMERATOR and DENOMINATOR (resp). | |
18273 | ||
18274 | If the numerator and/or numerator attribute is missing, | |
18275 | a complaint is filed, and NUMERATOR and DENOMINATOR are left | |
18276 | untouched. */ | |
18277 | ||
18278 | static void | |
18279 | get_dwarf2_rational_constant (struct die_info *die, struct dwarf2_cu *cu, | |
5cde1d82 | 18280 | gdb_mpz *numerator, gdb_mpz *denominator) |
09584414 JB |
18281 | { |
18282 | struct attribute *num_attr, *denom_attr; | |
18283 | ||
18284 | num_attr = dwarf2_attr (die, DW_AT_GNU_numerator, cu); | |
18285 | if (num_attr == nullptr) | |
18286 | complaint (_("DW_AT_GNU_numerator missing in %s DIE at %s"), | |
18287 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18288 | ||
18289 | denom_attr = dwarf2_attr (die, DW_AT_GNU_denominator, cu); | |
18290 | if (denom_attr == nullptr) | |
18291 | complaint (_("DW_AT_GNU_denominator missing in %s DIE at %s"), | |
18292 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18293 | ||
18294 | if (num_attr == nullptr || denom_attr == nullptr) | |
18295 | return; | |
18296 | ||
a625a8c9 TT |
18297 | get_mpz (cu, numerator, num_attr); |
18298 | get_mpz (cu, denominator, denom_attr); | |
09584414 JB |
18299 | } |
18300 | ||
18301 | /* Same as get_dwarf2_rational_constant, but extracting an unsigned | |
18302 | rational constant, rather than a signed one. | |
18303 | ||
18304 | If the rational constant has a negative value, a complaint | |
18305 | is filed, and NUMERATOR and DENOMINATOR are left untouched. */ | |
18306 | ||
18307 | static void | |
18308 | get_dwarf2_unsigned_rational_constant (struct die_info *die, | |
18309 | struct dwarf2_cu *cu, | |
5cde1d82 TT |
18310 | gdb_mpz *numerator, |
18311 | gdb_mpz *denominator) | |
09584414 | 18312 | { |
5cde1d82 TT |
18313 | gdb_mpz num (1); |
18314 | gdb_mpz denom (1); | |
09584414 JB |
18315 | |
18316 | get_dwarf2_rational_constant (die, cu, &num, &denom); | |
5cde1d82 | 18317 | if (mpz_sgn (num.val) == -1 && mpz_sgn (denom.val) == -1) |
09584414 | 18318 | { |
5cde1d82 TT |
18319 | mpz_neg (num.val, num.val); |
18320 | mpz_neg (denom.val, denom.val); | |
09584414 | 18321 | } |
5cde1d82 | 18322 | else if (mpz_sgn (num.val) == -1) |
09584414 JB |
18323 | { |
18324 | complaint (_("unexpected negative value for DW_AT_GNU_numerator" | |
18325 | " in DIE at %s"), | |
18326 | sect_offset_str (die->sect_off)); | |
18327 | return; | |
18328 | } | |
5cde1d82 | 18329 | else if (mpz_sgn (denom.val) == -1) |
09584414 JB |
18330 | { |
18331 | complaint (_("unexpected negative value for DW_AT_GNU_denominator" | |
18332 | " in DIE at %s"), | |
18333 | sect_offset_str (die->sect_off)); | |
18334 | return; | |
18335 | } | |
18336 | ||
5cde1d82 TT |
18337 | *numerator = std::move (num); |
18338 | *denominator = std::move (denom); | |
09584414 JB |
18339 | } |
18340 | ||
18341 | /* Assuming DIE corresponds to a fixed point type, finish the creation | |
2a12c336 | 18342 | of the corresponding TYPE by setting its type-specific data. |
09584414 JB |
18343 | CU is the DIE's CU. */ |
18344 | ||
18345 | static void | |
18346 | finish_fixed_point_type (struct type *type, struct die_info *die, | |
18347 | struct dwarf2_cu *cu) | |
18348 | { | |
18349 | struct attribute *attr; | |
09584414 JB |
18350 | |
18351 | gdb_assert (type->code () == TYPE_CODE_FIXED_POINT | |
18352 | && TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FIXED_POINT); | |
18353 | ||
18354 | attr = dwarf2_attr (die, DW_AT_binary_scale, cu); | |
18355 | if (!attr) | |
18356 | attr = dwarf2_attr (die, DW_AT_decimal_scale, cu); | |
18357 | if (!attr) | |
18358 | attr = dwarf2_attr (die, DW_AT_small, cu); | |
18359 | ||
5cde1d82 TT |
18360 | /* Numerator and denominator of our fixed-point type's scaling factor. |
18361 | The default is a scaling factor of 1, which we use as a fallback | |
18362 | when we are not able to decode it (problem with the debugging info, | |
18363 | unsupported forms, bug in GDB, etc...). Using that as the default | |
18364 | allows us to at least print the unscaled value, which might still | |
18365 | be useful to a user. */ | |
18366 | gdb_mpz scale_num (1); | |
18367 | gdb_mpz scale_denom (1); | |
18368 | ||
09584414 JB |
18369 | if (attr == nullptr) |
18370 | { | |
18371 | /* Scaling factor not found. Assume a scaling factor of 1, | |
18372 | and hope for the best. At least the user will be able to see | |
18373 | the encoded value. */ | |
18374 | complaint (_("no scale found for fixed-point type (DIE at %s)"), | |
18375 | sect_offset_str (die->sect_off)); | |
18376 | } | |
18377 | else if (attr->name == DW_AT_binary_scale) | |
18378 | { | |
18379 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18380 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18381 | |
5cde1d82 | 18382 | mpz_mul_2exp (num_or_denom->val, num_or_denom->val, std::abs (scale_exp)); |
09584414 JB |
18383 | } |
18384 | else if (attr->name == DW_AT_decimal_scale) | |
18385 | { | |
18386 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18387 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18388 | |
5cde1d82 | 18389 | mpz_ui_pow_ui (num_or_denom->val, 10, std::abs (scale_exp)); |
09584414 JB |
18390 | } |
18391 | else if (attr->name == DW_AT_small) | |
18392 | { | |
18393 | struct die_info *scale_die; | |
18394 | struct dwarf2_cu *scale_cu = cu; | |
18395 | ||
18396 | scale_die = follow_die_ref (die, attr, &scale_cu); | |
18397 | if (scale_die->tag == DW_TAG_constant) | |
18398 | get_dwarf2_unsigned_rational_constant (scale_die, scale_cu, | |
18399 | &scale_num, &scale_denom); | |
18400 | else | |
18401 | complaint (_("%s DIE not supported as target of DW_AT_small attribute" | |
18402 | " (DIE at %s)"), | |
18403 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18404 | } | |
18405 | else | |
18406 | { | |
18407 | complaint (_("unsupported scale attribute %s for fixed-point type" | |
18408 | " (DIE at %s)"), | |
18409 | dwarf_attr_name (attr->name), | |
18410 | sect_offset_str (die->sect_off)); | |
18411 | } | |
18412 | ||
2a12c336 | 18413 | gdb_mpq &scaling_factor = type->fixed_point_info ().scaling_factor; |
5cde1d82 TT |
18414 | mpz_set (mpq_numref (scaling_factor.val), scale_num.val); |
18415 | mpz_set (mpq_denref (scaling_factor.val), scale_denom.val); | |
09584414 JB |
18416 | mpq_canonicalize (scaling_factor.val); |
18417 | } | |
18418 | ||
9b790ce7 UW |
18419 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
18420 | (which may be different from NAME) to the architecture back-end to allow | |
18421 | it to guess the correct format if necessary. */ | |
18422 | ||
18423 | static struct type * | |
18424 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 18425 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 18426 | { |
08feed99 | 18427 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
18428 | const struct floatformat **format; |
18429 | struct type *type; | |
18430 | ||
18431 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
18432 | if (format) | |
103a685e | 18433 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 18434 | else |
77b7c781 | 18435 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
18436 | |
18437 | return type; | |
18438 | } | |
18439 | ||
eb77c9df AB |
18440 | /* Allocate an integer type of size BITS and name NAME. */ |
18441 | ||
18442 | static struct type * | |
18443 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
18444 | int bits, int unsigned_p, const char *name) | |
18445 | { | |
18446 | struct type *type; | |
18447 | ||
18448 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
18449 | instead of using DW_TAG_unspecified_type. This has been seen on | |
18450 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
18451 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
18452 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
18453 | type = objfile_type (objfile)->builtin_void; |
18454 | else | |
18455 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
18456 | ||
18457 | return type; | |
18458 | } | |
18459 | ||
09584414 JB |
18460 | /* Return true if DIE has a DW_AT_small attribute whose value is |
18461 | a constant rational, where both the numerator and denominator | |
18462 | are equal to zero. | |
18463 | ||
18464 | CU is the DIE's Compilation Unit. */ | |
18465 | ||
18466 | static bool | |
18467 | has_zero_over_zero_small_attribute (struct die_info *die, | |
18468 | struct dwarf2_cu *cu) | |
18469 | { | |
18470 | struct attribute *attr = dwarf2_attr (die, DW_AT_small, cu); | |
18471 | if (attr == nullptr) | |
18472 | return false; | |
18473 | ||
18474 | struct dwarf2_cu *scale_cu = cu; | |
18475 | struct die_info *scale_die | |
18476 | = follow_die_ref (die, attr, &scale_cu); | |
18477 | ||
18478 | if (scale_die->tag != DW_TAG_constant) | |
18479 | return false; | |
18480 | ||
5cde1d82 | 18481 | gdb_mpz num (1), denom (1); |
09584414 | 18482 | get_dwarf2_rational_constant (scale_die, cu, &num, &denom); |
5cde1d82 | 18483 | return mpz_sgn (num.val) == 0 && mpz_sgn (denom.val) == 0; |
09584414 JB |
18484 | } |
18485 | ||
8bdc1658 AB |
18486 | /* Initialise and return a floating point type of size BITS suitable for |
18487 | use as a component of a complex number. The NAME_HINT is passed through | |
18488 | when initialising the floating point type and is the name of the complex | |
18489 | type. | |
18490 | ||
18491 | As DWARF doesn't currently provide an explicit name for the components | |
18492 | of a complex number, but it can be helpful to have these components | |
18493 | named, we try to select a suitable name based on the size of the | |
18494 | component. */ | |
18495 | static struct type * | |
18496 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
18497 | struct objfile *objfile, | |
103a685e TT |
18498 | int bits, const char *name_hint, |
18499 | enum bfd_endian byte_order) | |
8bdc1658 | 18500 | { |
08feed99 | 18501 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
18502 | struct type *tt = nullptr; |
18503 | ||
35add35e AB |
18504 | /* Try to find a suitable floating point builtin type of size BITS. |
18505 | We're going to use the name of this type as the name for the complex | |
18506 | target type that we are about to create. */ | |
1db455a7 | 18507 | switch (cu->language) |
8bdc1658 | 18508 | { |
1db455a7 AB |
18509 | case language_fortran: |
18510 | switch (bits) | |
18511 | { | |
18512 | case 32: | |
18513 | tt = builtin_f_type (gdbarch)->builtin_real; | |
18514 | break; | |
18515 | case 64: | |
18516 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
18517 | break; | |
18518 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18519 | case 128: | |
18520 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
18521 | break; | |
18522 | } | |
8bdc1658 | 18523 | break; |
1db455a7 AB |
18524 | default: |
18525 | switch (bits) | |
18526 | { | |
18527 | case 32: | |
18528 | tt = builtin_type (gdbarch)->builtin_float; | |
18529 | break; | |
18530 | case 64: | |
18531 | tt = builtin_type (gdbarch)->builtin_double; | |
18532 | break; | |
18533 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18534 | case 128: | |
18535 | tt = builtin_type (gdbarch)->builtin_long_double; | |
18536 | break; | |
18537 | } | |
8bdc1658 AB |
18538 | break; |
18539 | } | |
18540 | ||
35add35e AB |
18541 | /* If the type we found doesn't match the size we were looking for, then |
18542 | pretend we didn't find a type at all, the complex target type we | |
18543 | create will then be nameless. */ | |
a12e5744 | 18544 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
18545 | tt = nullptr; |
18546 | ||
7d93a1e0 | 18547 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 18548 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
18549 | } |
18550 | ||
c906108c SS |
18551 | /* Find a representation of a given base type and install |
18552 | it in the TYPE field of the die. */ | |
18553 | ||
f792889a | 18554 | static struct type * |
e7c27a73 | 18555 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18556 | { |
5e22e966 | 18557 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
18558 | struct type *type; |
18559 | struct attribute *attr; | |
19f392bc | 18560 | int encoding = 0, bits = 0; |
15d034d0 | 18561 | const char *name; |
34877895 | 18562 | gdbarch *arch; |
c906108c | 18563 | |
e142c38c | 18564 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
529908cb TT |
18565 | if (attr != nullptr && attr->form_is_constant ()) |
18566 | encoding = attr->constant_value (0); | |
e142c38c | 18567 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18568 | if (attr != nullptr) |
529908cb | 18569 | bits = attr->constant_value (0) * TARGET_CHAR_BIT; |
39cbfefa | 18570 | name = dwarf2_name (die, cu); |
6ccb9162 | 18571 | if (!name) |
34877895 | 18572 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 18573 | |
08feed99 | 18574 | arch = objfile->arch (); |
103a685e TT |
18575 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
18576 | ||
34877895 | 18577 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
529908cb | 18578 | if (attr != nullptr && attr->form_is_constant ()) |
103a685e | 18579 | { |
529908cb | 18580 | int endianity = attr->constant_value (0); |
103a685e TT |
18581 | |
18582 | switch (endianity) | |
18583 | { | |
18584 | case DW_END_big: | |
18585 | byte_order = BFD_ENDIAN_BIG; | |
18586 | break; | |
18587 | case DW_END_little: | |
18588 | byte_order = BFD_ENDIAN_LITTLE; | |
18589 | break; | |
18590 | default: | |
18591 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
18592 | break; | |
18593 | } | |
18594 | } | |
6ccb9162 | 18595 | |
09584414 JB |
18596 | if ((encoding == DW_ATE_signed_fixed || encoding == DW_ATE_unsigned_fixed) |
18597 | && cu->language == language_ada | |
18598 | && has_zero_over_zero_small_attribute (die, cu)) | |
18599 | { | |
18600 | /* brobecker/2018-02-24: This is a fixed point type for which | |
18601 | the scaling factor is represented as fraction whose value | |
18602 | does not make sense (zero divided by zero), so we should | |
18603 | normally never see these. However, there is a small category | |
18604 | of fixed point types for which GNAT is unable to provide | |
18605 | the scaling factor via the standard DWARF mechanisms, and | |
18606 | for which the info is provided via the GNAT encodings instead. | |
18607 | This is likely what this DIE is about. | |
18608 | ||
18609 | Ideally, GNAT should be declaring this type the same way | |
18610 | it declares other fixed point types when using the legacy | |
18611 | GNAT encoding, which is to use a simple signed or unsigned | |
18612 | base type. A report to the GNAT team has been created to | |
18613 | look into it. In the meantime, pretend this type is a simple | |
18614 | signed or unsigned integral, rather than a fixed point type, | |
18615 | to avoid any confusion later on as to how to process this type. */ | |
18616 | encoding = (encoding == DW_ATE_signed_fixed | |
18617 | ? DW_ATE_signed | |
18618 | : DW_ATE_unsigned); | |
18619 | } | |
18620 | ||
6ccb9162 | 18621 | switch (encoding) |
c906108c | 18622 | { |
6ccb9162 UW |
18623 | case DW_ATE_address: |
18624 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 18625 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 18626 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
18627 | break; |
18628 | case DW_ATE_boolean: | |
19f392bc | 18629 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
18630 | break; |
18631 | case DW_ATE_complex_float: | |
103a685e TT |
18632 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
18633 | byte_order); | |
78134374 | 18634 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
18635 | { |
18636 | if (name == nullptr) | |
18637 | { | |
18638 | struct obstack *obstack | |
5e22e966 | 18639 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 18640 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
18641 | nullptr); |
18642 | } | |
18643 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
18644 | } | |
18645 | else | |
18646 | type = init_complex_type (name, type); | |
6ccb9162 UW |
18647 | break; |
18648 | case DW_ATE_decimal_float: | |
19f392bc | 18649 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
18650 | break; |
18651 | case DW_ATE_float: | |
103a685e | 18652 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
18653 | break; |
18654 | case DW_ATE_signed: | |
eb77c9df | 18655 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18656 | break; |
18657 | case DW_ATE_unsigned: | |
3b2b8fea TT |
18658 | if (cu->language == language_fortran |
18659 | && name | |
61012eef | 18660 | && startswith (name, "character(")) |
19f392bc UW |
18661 | type = init_character_type (objfile, bits, 1, name); |
18662 | else | |
eb77c9df | 18663 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
18664 | break; |
18665 | case DW_ATE_signed_char: | |
6e70227d | 18666 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
18667 | || cu->language == language_pascal |
18668 | || cu->language == language_fortran) | |
19f392bc UW |
18669 | type = init_character_type (objfile, bits, 0, name); |
18670 | else | |
eb77c9df | 18671 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18672 | break; |
18673 | case DW_ATE_unsigned_char: | |
868a0084 | 18674 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 18675 | || cu->language == language_pascal |
c44af4eb TT |
18676 | || cu->language == language_fortran |
18677 | || cu->language == language_rust) | |
19f392bc UW |
18678 | type = init_character_type (objfile, bits, 1, name); |
18679 | else | |
eb77c9df | 18680 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 18681 | break; |
75079b2b | 18682 | case DW_ATE_UTF: |
53e710ac | 18683 | { |
53e710ac PA |
18684 | if (bits == 16) |
18685 | type = builtin_type (arch)->builtin_char16; | |
18686 | else if (bits == 32) | |
18687 | type = builtin_type (arch)->builtin_char32; | |
18688 | else | |
18689 | { | |
b98664d3 | 18690 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 18691 | bits); |
eb77c9df | 18692 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
18693 | } |
18694 | return set_die_type (die, type, cu); | |
18695 | } | |
75079b2b | 18696 | break; |
09584414 JB |
18697 | case DW_ATE_signed_fixed: |
18698 | type = init_fixed_point_type (objfile, bits, 0, name); | |
18699 | finish_fixed_point_type (type, die, cu); | |
18700 | break; | |
18701 | case DW_ATE_unsigned_fixed: | |
18702 | type = init_fixed_point_type (objfile, bits, 1, name); | |
18703 | finish_fixed_point_type (type, die, cu); | |
18704 | break; | |
75079b2b | 18705 | |
6ccb9162 | 18706 | default: |
b98664d3 | 18707 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 18708 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 18709 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 18710 | break; |
c906108c | 18711 | } |
6ccb9162 | 18712 | |
0114d602 | 18713 | if (name && strcmp (name, "char") == 0) |
15152a54 | 18714 | type->set_has_no_signedness (true); |
0114d602 | 18715 | |
2b4424c3 TT |
18716 | maybe_set_alignment (cu, die, type); |
18717 | ||
db558e34 | 18718 | type->set_endianity_is_not_default (gdbarch_byte_order (arch) != byte_order); |
34877895 | 18719 | |
20a5fcbd TT |
18720 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_INT) |
18721 | { | |
18722 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); | |
529908cb | 18723 | if (attr != nullptr && attr->as_unsigned () <= 8 * TYPE_LENGTH (type)) |
20a5fcbd | 18724 | { |
529908cb | 18725 | unsigned real_bit_size = attr->as_unsigned (); |
20a5fcbd TT |
18726 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
18727 | /* Only use the attributes if they make sense together. */ | |
18728 | if (attr == nullptr | |
529908cb TT |
18729 | || (attr->as_unsigned () + real_bit_size |
18730 | <= 8 * TYPE_LENGTH (type))) | |
20a5fcbd TT |
18731 | { |
18732 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_size | |
18733 | = real_bit_size; | |
18734 | if (attr != nullptr) | |
18735 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_offset | |
529908cb | 18736 | = attr->as_unsigned (); |
20a5fcbd TT |
18737 | } |
18738 | } | |
18739 | } | |
18740 | ||
f792889a | 18741 | return set_die_type (die, type, cu); |
c906108c SS |
18742 | } |
18743 | ||
80180f79 SA |
18744 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
18745 | resulting value of the attribute into struct bound_prop. | |
18746 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
18747 | ||
18748 | static int | |
18749 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
18750 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
18751 | struct type *default_type) | |
80180f79 SA |
18752 | { |
18753 | struct dwarf2_property_baton *baton; | |
5e22e966 | 18754 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
18755 | struct objfile *objfile = per_objfile->objfile; |
18756 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 18757 | |
9a49df9d AB |
18758 | gdb_assert (default_type != NULL); |
18759 | ||
80180f79 SA |
18760 | if (attr == NULL || prop == NULL) |
18761 | return 0; | |
18762 | ||
4fc6c0d5 | 18763 | if (attr->form_is_block ()) |
80180f79 | 18764 | { |
8d749320 | 18765 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18766 | baton->property_type = default_type; |
80180f79 | 18767 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18768 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18769 | |
18770 | struct dwarf_block *block = attr->as_block (); | |
18771 | baton->locexpr.size = block->size; | |
18772 | baton->locexpr.data = block->data; | |
216a7e6b AB |
18773 | switch (attr->name) |
18774 | { | |
18775 | case DW_AT_string_length: | |
18776 | baton->locexpr.is_reference = true; | |
18777 | break; | |
18778 | default: | |
18779 | baton->locexpr.is_reference = false; | |
18780 | break; | |
18781 | } | |
8c2e4e06 SM |
18782 | |
18783 | prop->set_locexpr (baton); | |
18784 | gdb_assert (prop->baton () != NULL); | |
80180f79 | 18785 | } |
cd6c91b4 | 18786 | else if (attr->form_is_ref ()) |
80180f79 SA |
18787 | { |
18788 | struct dwarf2_cu *target_cu = cu; | |
18789 | struct die_info *target_die; | |
18790 | struct attribute *target_attr; | |
18791 | ||
18792 | target_die = follow_die_ref (die, attr, &target_cu); | |
18793 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
18794 | if (target_attr == NULL) |
18795 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
18796 | target_cu); | |
80180f79 SA |
18797 | if (target_attr == NULL) |
18798 | return 0; | |
18799 | ||
df25ebbd | 18800 | switch (target_attr->name) |
80180f79 | 18801 | { |
df25ebbd | 18802 | case DW_AT_location: |
cd6c91b4 | 18803 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 18804 | { |
8d749320 | 18805 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18806 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18807 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
8c2e4e06 SM |
18808 | prop->set_loclist (baton); |
18809 | gdb_assert (prop->baton () != NULL); | |
df25ebbd | 18810 | } |
4fc6c0d5 | 18811 | else if (target_attr->form_is_block ()) |
df25ebbd | 18812 | { |
8d749320 | 18813 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18814 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18815 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18816 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18817 | struct dwarf_block *block = target_attr->as_block (); |
18818 | baton->locexpr.size = block->size; | |
18819 | baton->locexpr.data = block->data; | |
9a49df9d | 18820 | baton->locexpr.is_reference = true; |
8c2e4e06 SM |
18821 | prop->set_locexpr (baton); |
18822 | gdb_assert (prop->baton () != NULL); | |
df25ebbd JB |
18823 | } |
18824 | else | |
18825 | { | |
18826 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18827 | "dynamic property"); | |
18828 | return 0; | |
18829 | } | |
18830 | break; | |
18831 | case DW_AT_data_member_location: | |
18832 | { | |
18833 | LONGEST offset; | |
18834 | ||
18835 | if (!handle_data_member_location (target_die, target_cu, | |
18836 | &offset)) | |
18837 | return 0; | |
18838 | ||
8d749320 | 18839 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18840 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 18841 | target_cu); |
df25ebbd JB |
18842 | baton->offset_info.offset = offset; |
18843 | baton->offset_info.type = die_type (target_die, target_cu); | |
8c2e4e06 | 18844 | prop->set_addr_offset (baton); |
df25ebbd JB |
18845 | break; |
18846 | } | |
80180f79 SA |
18847 | } |
18848 | } | |
cd6c91b4 | 18849 | else if (attr->form_is_constant ()) |
8c2e4e06 | 18850 | prop->set_const_val (attr->constant_value (0)); |
80180f79 SA |
18851 | else |
18852 | { | |
18853 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18854 | dwarf2_name (die, cu)); | |
18855 | return 0; | |
18856 | } | |
18857 | ||
18858 | return 1; | |
18859 | } | |
18860 | ||
09ba997f | 18861 | /* See read.h. */ |
9a49df9d | 18862 | |
09ba997f | 18863 | struct type * |
293e7e51 | 18864 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 18865 | { |
9a49df9d AB |
18866 | struct type *int_type; |
18867 | ||
18868 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
18869 | #define TRY_TYPE(F) \ |
18870 | int_type = (unsigned_p \ | |
18871 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
18872 | : objfile_type (objfile)->builtin_ ## F); \ | |
18873 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
18874 | return int_type |
18875 | ||
18876 | TRY_TYPE (char); | |
18877 | TRY_TYPE (short); | |
18878 | TRY_TYPE (int); | |
18879 | TRY_TYPE (long); | |
18880 | TRY_TYPE (long_long); | |
18881 | ||
18882 | #undef TRY_TYPE | |
18883 | ||
18884 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
18885 | } | |
18886 | ||
09ba997f | 18887 | /* See read.h. */ |
11a8b164 | 18888 | |
09ba997f | 18889 | struct type * |
293e7e51 | 18890 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 18891 | { |
293e7e51 SM |
18892 | int addr_size = this->per_cu->addr_size (); |
18893 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
18894 | } |
18895 | ||
b86352cf AB |
18896 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
18897 | present (which is valid) then compute the default type based on the | |
18898 | compilation units address size. */ | |
18899 | ||
18900 | static struct type * | |
18901 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
18902 | { | |
18903 | struct type *index_type = die_type (die, cu); | |
18904 | ||
18905 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18906 | without specifying a base type. | |
18907 | In that case, the base type must be set to the type of | |
18908 | the lower bound, upper bound or count, in that order, if any of these | |
18909 | three attributes references an object that has a type. | |
18910 | If no base type is found, the Dwarf-2 specifications say that | |
18911 | a signed integer type of size equal to the size of an address should | |
18912 | be used. | |
18913 | For the following C code: `extern char gdb_int [];' | |
18914 | GCC produces an empty range DIE. | |
18915 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
18916 | high bound or count are not yet handled by this code. */ | |
78134374 | 18917 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 18918 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
18919 | |
18920 | return index_type; | |
18921 | } | |
18922 | ||
a02abb62 JB |
18923 | /* Read the given DW_AT_subrange DIE. */ |
18924 | ||
f792889a | 18925 | static struct type * |
a02abb62 JB |
18926 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18927 | { | |
4c9ad8c2 | 18928 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18929 | struct type *range_type; |
18930 | struct attribute *attr; | |
729efb13 | 18931 | struct dynamic_prop low, high; |
4fae6e18 | 18932 | int low_default_is_valid; |
c451ebe5 | 18933 | int high_bound_is_count = 0; |
15d034d0 | 18934 | const char *name; |
d359392f | 18935 | ULONGEST negative_mask; |
e77813c8 | 18936 | |
b86352cf AB |
18937 | orig_base_type = read_subrange_index_type (die, cu); |
18938 | ||
4c9ad8c2 TT |
18939 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
18940 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18941 | creating the range type, but we use the result of check_typedef | |
18942 | when examining properties of the type. */ | |
18943 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18944 | |
7e314c57 JK |
18945 | /* The die_type call above may have already set the type for this DIE. */ |
18946 | range_type = get_die_type (die, cu); | |
18947 | if (range_type) | |
18948 | return range_type; | |
18949 | ||
8c2e4e06 | 18950 | high.set_const_val (0); |
729efb13 | 18951 | |
4fae6e18 JK |
18952 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18953 | omitting DW_AT_lower_bound. */ | |
18954 | switch (cu->language) | |
6e70227d | 18955 | { |
4fae6e18 JK |
18956 | case language_c: |
18957 | case language_cplus: | |
8c2e4e06 | 18958 | low.set_const_val (0); |
4fae6e18 JK |
18959 | low_default_is_valid = 1; |
18960 | break; | |
18961 | case language_fortran: | |
8c2e4e06 | 18962 | low.set_const_val (1); |
4fae6e18 JK |
18963 | low_default_is_valid = 1; |
18964 | break; | |
18965 | case language_d: | |
4fae6e18 | 18966 | case language_objc: |
c44af4eb | 18967 | case language_rust: |
8c2e4e06 | 18968 | low.set_const_val (0); |
4fae6e18 JK |
18969 | low_default_is_valid = (cu->header.version >= 4); |
18970 | break; | |
18971 | case language_ada: | |
18972 | case language_m2: | |
18973 | case language_pascal: | |
8c2e4e06 | 18974 | low.set_const_val (1); |
4fae6e18 JK |
18975 | low_default_is_valid = (cu->header.version >= 4); |
18976 | break; | |
18977 | default: | |
8c2e4e06 | 18978 | low.set_const_val (0); |
4fae6e18 JK |
18979 | low_default_is_valid = 0; |
18980 | break; | |
a02abb62 JB |
18981 | } |
18982 | ||
e142c38c | 18983 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 18984 | if (attr != nullptr) |
9a49df9d | 18985 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 18986 | else if (!low_default_is_valid) |
b98664d3 | 18987 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
18988 | "- DIE at %s [in module %s]"), |
18989 | sect_offset_str (die->sect_off), | |
5e22e966 | 18990 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 18991 | |
506f5c41 TV |
18992 | struct attribute *attr_ub, *attr_count; |
18993 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 18994 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 18995 | { |
506f5c41 | 18996 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 18997 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 18998 | { |
c451ebe5 | 18999 | /* If bounds are constant do the final calculation here. */ |
8c2e4e06 SM |
19000 | if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) |
19001 | high.set_const_val (low.const_val () + high.const_val () - 1); | |
c451ebe5 SA |
19002 | else |
19003 | high_bound_is_count = 1; | |
c2ff108b | 19004 | } |
506f5c41 TV |
19005 | else |
19006 | { | |
19007 | if (attr_ub != NULL) | |
19008 | complaint (_("Unresolved DW_AT_upper_bound " | |
19009 | "- DIE at %s [in module %s]"), | |
19010 | sect_offset_str (die->sect_off), | |
5e22e966 | 19011 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
19012 | if (attr_count != NULL) |
19013 | complaint (_("Unresolved DW_AT_count " | |
19014 | "- DIE at %s [in module %s]"), | |
19015 | sect_offset_str (die->sect_off), | |
5e22e966 | 19016 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 19017 | } |
e77813c8 | 19018 | } |
a02abb62 | 19019 | |
4e962e74 TT |
19020 | LONGEST bias = 0; |
19021 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 19022 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 19023 | bias = bias_attr->constant_value (0); |
4e962e74 | 19024 | |
dbb9c2b1 JB |
19025 | /* Normally, the DWARF producers are expected to use a signed |
19026 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
19027 | But this is unfortunately not always the case, as witnessed | |
19028 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
19029 | is used instead. To work around that ambiguity, we treat | |
19030 | the bounds as signed, and thus sign-extend their values, when | |
19031 | the base type is signed. */ | |
6e70227d | 19032 | negative_mask = |
d359392f | 19033 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
8c2e4e06 | 19034 | if (low.kind () == PROP_CONST |
c6d940a9 | 19035 | && !base_type->is_unsigned () && (low.const_val () & negative_mask)) |
8c2e4e06 SM |
19036 | low.set_const_val (low.const_val () | negative_mask); |
19037 | if (high.kind () == PROP_CONST | |
c6d940a9 | 19038 | && !base_type->is_unsigned () && (high.const_val () & negative_mask)) |
8c2e4e06 | 19039 | high.set_const_val (high.const_val () | negative_mask); |
43bbcdc2 | 19040 | |
5bbd8269 AB |
19041 | /* Check for bit and byte strides. */ |
19042 | struct dynamic_prop byte_stride_prop; | |
19043 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
19044 | if (attr_byte_stride != nullptr) | |
19045 | { | |
293e7e51 | 19046 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
19047 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
19048 | prop_type); | |
19049 | } | |
19050 | ||
19051 | struct dynamic_prop bit_stride_prop; | |
19052 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
19053 | if (attr_bit_stride != nullptr) | |
19054 | { | |
19055 | /* It only makes sense to have either a bit or byte stride. */ | |
19056 | if (attr_byte_stride != nullptr) | |
19057 | { | |
19058 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
19059 | "- DIE at %s [in module %s]"), | |
19060 | sect_offset_str (die->sect_off), | |
5e22e966 | 19061 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
19062 | attr_bit_stride = nullptr; |
19063 | } | |
19064 | else | |
19065 | { | |
293e7e51 | 19066 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
19067 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
19068 | prop_type); | |
19069 | } | |
19070 | } | |
19071 | ||
19072 | if (attr_byte_stride != nullptr | |
19073 | || attr_bit_stride != nullptr) | |
19074 | { | |
19075 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
19076 | struct dynamic_prop *stride | |
19077 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
19078 | ||
19079 | range_type | |
19080 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
19081 | &high, bias, stride, byte_stride_p); | |
19082 | } | |
19083 | else | |
19084 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 19085 | |
c451ebe5 | 19086 | if (high_bound_is_count) |
599088e3 | 19087 | range_type->bounds ()->flag_upper_bound_is_count = 1; |
c451ebe5 | 19088 | |
c2ff108b JK |
19089 | /* Ada expects an empty array on no boundary attributes. */ |
19090 | if (attr == NULL && cu->language != language_ada) | |
8c2e4e06 | 19091 | range_type->bounds ()->high.set_undefined (); |
c2ff108b | 19092 | |
39cbfefa DJ |
19093 | name = dwarf2_name (die, cu); |
19094 | if (name) | |
d0e39ea2 | 19095 | range_type->set_name (name); |
6e70227d | 19096 | |
e142c38c | 19097 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 19098 | if (attr != nullptr) |
529908cb | 19099 | TYPE_LENGTH (range_type) = attr->constant_value (0); |
a02abb62 | 19100 | |
2b4424c3 TT |
19101 | maybe_set_alignment (cu, die, range_type); |
19102 | ||
7e314c57 JK |
19103 | set_die_type (die, range_type, cu); |
19104 | ||
19105 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
19106 | set_descriptive_type (range_type, die, cu); |
19107 | ||
7e314c57 | 19108 | return range_type; |
a02abb62 | 19109 | } |
6e70227d | 19110 | |
f792889a | 19111 | static struct type * |
81a17f79 JB |
19112 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
19113 | { | |
19114 | struct type *type; | |
81a17f79 | 19115 | |
5e22e966 | 19116 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 19117 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 19118 | |
74a2f8ff | 19119 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 19120 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
19121 | such a type, we treat it as a stub, and try to resolve it later on, |
19122 | when needed. */ | |
19123 | if (cu->language == language_ada) | |
b4b73759 | 19124 | type->set_is_stub (true); |
74a2f8ff | 19125 | |
f792889a | 19126 | return set_die_type (die, type, cu); |
81a17f79 | 19127 | } |
a02abb62 | 19128 | |
639d11d3 DC |
19129 | /* Read a single die and all its descendents. Set the die's sibling |
19130 | field to NULL; set other fields in the die correctly, and set all | |
19131 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
19132 | location of the info_ptr after reading all of those dies. PARENT | |
19133 | is the parent of the die in question. */ | |
19134 | ||
19135 | static struct die_info * | |
dee91e82 | 19136 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
19137 | const gdb_byte *info_ptr, |
19138 | const gdb_byte **new_info_ptr, | |
dee91e82 | 19139 | struct die_info *parent) |
639d11d3 DC |
19140 | { |
19141 | struct die_info *die; | |
d521ce57 | 19142 | const gdb_byte *cur_ptr; |
639d11d3 | 19143 | |
3e225074 | 19144 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
19145 | if (die == NULL) |
19146 | { | |
19147 | *new_info_ptr = cur_ptr; | |
19148 | return NULL; | |
19149 | } | |
93311388 | 19150 | store_in_ref_table (die, reader->cu); |
639d11d3 | 19151 | |
3e225074 | 19152 | if (die->has_children) |
bf6af496 | 19153 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
19154 | else |
19155 | { | |
19156 | die->child = NULL; | |
19157 | *new_info_ptr = cur_ptr; | |
19158 | } | |
19159 | ||
19160 | die->sibling = NULL; | |
19161 | die->parent = parent; | |
19162 | return die; | |
19163 | } | |
19164 | ||
19165 | /* Read a die, all of its descendents, and all of its siblings; set | |
19166 | all of the fields of all of the dies correctly. Arguments are as | |
19167 | in read_die_and_children. */ | |
19168 | ||
19169 | static struct die_info * | |
bf6af496 | 19170 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
19171 | const gdb_byte *info_ptr, |
19172 | const gdb_byte **new_info_ptr, | |
bf6af496 | 19173 | struct die_info *parent) |
639d11d3 DC |
19174 | { |
19175 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 19176 | const gdb_byte *cur_ptr; |
639d11d3 | 19177 | |
c906108c | 19178 | cur_ptr = info_ptr; |
639d11d3 DC |
19179 | first_die = last_sibling = NULL; |
19180 | ||
19181 | while (1) | |
c906108c | 19182 | { |
639d11d3 | 19183 | struct die_info *die |
dee91e82 | 19184 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 19185 | |
1d325ec1 | 19186 | if (die == NULL) |
c906108c | 19187 | { |
639d11d3 DC |
19188 | *new_info_ptr = cur_ptr; |
19189 | return first_die; | |
c906108c | 19190 | } |
1d325ec1 DJ |
19191 | |
19192 | if (!first_die) | |
19193 | first_die = die; | |
c906108c | 19194 | else |
1d325ec1 DJ |
19195 | last_sibling->sibling = die; |
19196 | ||
19197 | last_sibling = die; | |
c906108c | 19198 | } |
c906108c SS |
19199 | } |
19200 | ||
bf6af496 DE |
19201 | /* Read a die, all of its descendents, and all of its siblings; set |
19202 | all of the fields of all of the dies correctly. Arguments are as | |
19203 | in read_die_and_children. | |
19204 | This the main entry point for reading a DIE and all its children. */ | |
19205 | ||
19206 | static struct die_info * | |
19207 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
19208 | const gdb_byte *info_ptr, |
19209 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
19210 | struct die_info *parent) |
19211 | { | |
19212 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
19213 | new_info_ptr, parent); | |
19214 | ||
b4f54984 | 19215 | if (dwarf_die_debug) |
bf6af496 DE |
19216 | { |
19217 | fprintf_unfiltered (gdb_stdlog, | |
19218 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19219 | reader->die_section->get_name (), |
bf6af496 DE |
19220 | (unsigned) (info_ptr - reader->die_section->buffer), |
19221 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19222 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
19223 | } |
19224 | ||
19225 | return die; | |
19226 | } | |
19227 | ||
3019eac3 DE |
19228 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
19229 | attributes. | |
19230 | The caller is responsible for filling in the extra attributes | |
19231 | and updating (*DIEP)->num_attrs. | |
19232 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19233 | except for its child, sibling, and parent fields. */ |
93311388 | 19234 | |
d521ce57 | 19235 | static const gdb_byte * |
3019eac3 | 19236 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 19237 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 19238 | int num_extra_attrs) |
93311388 | 19239 | { |
b64f50a1 | 19240 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
19241 | struct abbrev_info *abbrev; |
19242 | struct die_info *die; | |
19243 | struct dwarf2_cu *cu = reader->cu; | |
19244 | bfd *abfd = reader->abfd; | |
19245 | ||
9c541725 | 19246 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
19247 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19248 | info_ptr += bytes_read; | |
19249 | if (!abbrev_number) | |
19250 | { | |
19251 | *diep = NULL; | |
93311388 DE |
19252 | return info_ptr; |
19253 | } | |
19254 | ||
685af9cd | 19255 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 19256 | if (!abbrev) |
348e048f DE |
19257 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
19258 | abbrev_number, | |
19259 | bfd_get_filename (abfd)); | |
19260 | ||
3019eac3 | 19261 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 19262 | die->sect_off = sect_off; |
93311388 DE |
19263 | die->tag = abbrev->tag; |
19264 | die->abbrev = abbrev_number; | |
3e225074 | 19265 | die->has_children = abbrev->has_children; |
93311388 | 19266 | |
3019eac3 DE |
19267 | /* Make the result usable. |
19268 | The caller needs to update num_attrs after adding the extra | |
19269 | attributes. */ | |
93311388 DE |
19270 | die->num_attrs = abbrev->num_attrs; |
19271 | ||
7a5f294d | 19272 | bool any_need_reprocess = false; |
93311388 | 19273 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e | 19274 | { |
7a5f294d TT |
19275 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
19276 | info_ptr); | |
19277 | if (die->attrs[i].requires_reprocessing_p ()) | |
19278 | any_need_reprocess = true; | |
18a8505e AT |
19279 | } |
19280 | ||
052c8bb8 | 19281 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
529908cb TT |
19282 | if (attr != nullptr && attr->form_is_unsigned ()) |
19283 | cu->str_offsets_base = attr->as_unsigned (); | |
93311388 | 19284 | |
41144253 | 19285 | attr = die->attr (DW_AT_loclists_base); |
19286 | if (attr != nullptr) | |
529908cb | 19287 | cu->loclist_base = attr->as_unsigned (); |
41144253 | 19288 | |
a39fdb41 | 19289 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
19290 | if (maybe_addr_base.has_value ()) |
19291 | cu->addr_base = *maybe_addr_base; | |
d0ce17d8 CT |
19292 | |
19293 | attr = die->attr (DW_AT_rnglists_base); | |
19294 | if (attr != nullptr) | |
529908cb | 19295 | cu->ranges_base = attr->as_unsigned (); |
d0ce17d8 | 19296 | |
7a5f294d TT |
19297 | if (any_need_reprocess) |
19298 | { | |
19299 | for (i = 0; i < abbrev->num_attrs; ++i) | |
19300 | { | |
19301 | if (die->attrs[i].requires_reprocessing_p ()) | |
19302 | read_attribute_reprocess (reader, &die->attrs[i], die->tag); | |
19303 | } | |
19304 | } | |
93311388 | 19305 | *diep = die; |
93311388 DE |
19306 | return info_ptr; |
19307 | } | |
19308 | ||
3019eac3 DE |
19309 | /* Read a die and all its attributes. |
19310 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19311 | except for its child, sibling, and parent fields. */ |
3019eac3 | 19312 | |
d521ce57 | 19313 | static const gdb_byte * |
3019eac3 | 19314 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 19315 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 19316 | { |
d521ce57 | 19317 | const gdb_byte *result; |
bf6af496 | 19318 | |
3e225074 | 19319 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 19320 | |
b4f54984 | 19321 | if (dwarf_die_debug) |
bf6af496 DE |
19322 | { |
19323 | fprintf_unfiltered (gdb_stdlog, | |
19324 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19325 | reader->die_section->get_name (), |
bf6af496 DE |
19326 | (unsigned) (info_ptr - reader->die_section->buffer), |
19327 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19328 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
19329 | } |
19330 | ||
19331 | return result; | |
3019eac3 | 19332 | } |
433df2d4 | 19333 | \f |
c906108c | 19334 | |
72bf9492 DJ |
19335 | /* Returns nonzero if TAG represents a type that we might generate a partial |
19336 | symbol for. */ | |
19337 | ||
19338 | static int | |
d8f62e84 | 19339 | is_type_tag_for_partial (int tag, enum language lang) |
72bf9492 DJ |
19340 | { |
19341 | switch (tag) | |
19342 | { | |
19343 | #if 0 | |
19344 | /* Some types that would be reasonable to generate partial symbols for, | |
d8f62e84 TT |
19345 | that we don't at present. Note that normally this does not |
19346 | matter, mainly because C compilers don't give names to these | |
19347 | types, but instead emit DW_TAG_typedef. */ | |
72bf9492 DJ |
19348 | case DW_TAG_file_type: |
19349 | case DW_TAG_ptr_to_member_type: | |
19350 | case DW_TAG_set_type: | |
19351 | case DW_TAG_string_type: | |
19352 | case DW_TAG_subroutine_type: | |
19353 | #endif | |
d8f62e84 TT |
19354 | |
19355 | /* GNAT may emit an array with a name, but no typedef, so we | |
19356 | need to make a symbol in this case. */ | |
19357 | case DW_TAG_array_type: | |
19358 | return lang == language_ada; | |
19359 | ||
72bf9492 DJ |
19360 | case DW_TAG_base_type: |
19361 | case DW_TAG_class_type: | |
680b30c7 | 19362 | case DW_TAG_interface_type: |
72bf9492 DJ |
19363 | case DW_TAG_enumeration_type: |
19364 | case DW_TAG_structure_type: | |
19365 | case DW_TAG_subrange_type: | |
19366 | case DW_TAG_typedef: | |
19367 | case DW_TAG_union_type: | |
19368 | return 1; | |
19369 | default: | |
19370 | return 0; | |
19371 | } | |
19372 | } | |
19373 | ||
19374 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
19375 | ||
19376 | static struct partial_die_info * | |
dee91e82 | 19377 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 19378 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 19379 | { |
dee91e82 | 19380 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19381 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 19382 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 19383 | unsigned int bytes_read; |
5afb4e99 | 19384 | unsigned int load_all = 0; |
72bf9492 DJ |
19385 | int nesting_level = 1; |
19386 | ||
19387 | parent_die = NULL; | |
19388 | last_die = NULL; | |
19389 | ||
7adf1e79 DE |
19390 | gdb_assert (cu->per_cu != NULL); |
19391 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
19392 | load_all = 1; |
19393 | ||
72bf9492 DJ |
19394 | cu->partial_dies |
19395 | = htab_create_alloc_ex (cu->header.length / 12, | |
19396 | partial_die_hash, | |
19397 | partial_die_eq, | |
19398 | NULL, | |
19399 | &cu->comp_unit_obstack, | |
19400 | hashtab_obstack_allocate, | |
19401 | dummy_obstack_deallocate); | |
19402 | ||
72bf9492 DJ |
19403 | while (1) |
19404 | { | |
685af9cd | 19405 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
19406 | |
19407 | /* A NULL abbrev means the end of a series of children. */ | |
19408 | if (abbrev == NULL) | |
19409 | { | |
19410 | if (--nesting_level == 0) | |
cd9983dd YQ |
19411 | return first_die; |
19412 | ||
72bf9492 DJ |
19413 | info_ptr += bytes_read; |
19414 | last_die = parent_die; | |
19415 | parent_die = parent_die->die_parent; | |
19416 | continue; | |
19417 | } | |
19418 | ||
98bfdba5 PA |
19419 | /* Check for template arguments. We never save these; if |
19420 | they're seen, we just mark the parent, and go on our way. */ | |
19421 | if (parent_die != NULL | |
19422 | && cu->language == language_cplus | |
19423 | && (abbrev->tag == DW_TAG_template_type_param | |
19424 | || abbrev->tag == DW_TAG_template_value_param)) | |
19425 | { | |
19426 | parent_die->has_template_arguments = 1; | |
19427 | ||
19428 | if (!load_all) | |
19429 | { | |
19430 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 19431 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19432 | continue; |
19433 | } | |
19434 | } | |
19435 | ||
0d99eb77 | 19436 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
19437 | Skip their other children. */ |
19438 | if (!load_all | |
19439 | && cu->language == language_cplus | |
19440 | && parent_die != NULL | |
f9b5d5ea TV |
19441 | && parent_die->tag == DW_TAG_subprogram |
19442 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 19443 | { |
dee91e82 | 19444 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19445 | continue; |
19446 | } | |
19447 | ||
5afb4e99 DJ |
19448 | /* Check whether this DIE is interesting enough to save. Normally |
19449 | we would not be interested in members here, but there may be | |
19450 | later variables referencing them via DW_AT_specification (for | |
19451 | static members). */ | |
19452 | if (!load_all | |
d8f62e84 | 19453 | && !is_type_tag_for_partial (abbrev->tag, cu->language) |
72929c62 | 19454 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
19455 | && abbrev->tag != DW_TAG_enumerator |
19456 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 19457 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 19458 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 19459 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 19460 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 19461 | && abbrev->tag != DW_TAG_module |
95554aad | 19462 | && abbrev->tag != DW_TAG_member |
74921315 KS |
19463 | && abbrev->tag != DW_TAG_imported_unit |
19464 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
19465 | { |
19466 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19467 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
19468 | continue; |
19469 | } | |
19470 | ||
6f06d47b YQ |
19471 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
19472 | abbrev); | |
cd9983dd | 19473 | |
48fbe735 | 19474 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
19475 | |
19476 | /* This two-pass algorithm for processing partial symbols has a | |
19477 | high cost in cache pressure. Thus, handle some simple cases | |
19478 | here which cover the majority of C partial symbols. DIEs | |
19479 | which neither have specification tags in them, nor could have | |
19480 | specification tags elsewhere pointing at them, can simply be | |
19481 | processed and discarded. | |
19482 | ||
19483 | This segment is also optional; scan_partial_symbols and | |
19484 | add_partial_symbol will handle these DIEs if we chain | |
19485 | them in normally. When compilers which do not emit large | |
19486 | quantities of duplicate debug information are more common, | |
19487 | this code can probably be removed. */ | |
19488 | ||
19489 | /* Any complete simple types at the top level (pretty much all | |
19490 | of them, for a language without namespaces), can be processed | |
19491 | directly. */ | |
19492 | if (parent_die == NULL | |
cd9983dd YQ |
19493 | && pdi.has_specification == 0 |
19494 | && pdi.is_declaration == 0 | |
19495 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
19496 | || pdi.tag == DW_TAG_base_type | |
d8f62e84 | 19497 | || pdi.tag == DW_TAG_array_type |
cd9983dd | 19498 | || pdi.tag == DW_TAG_subrange_type)) |
72bf9492 | 19499 | { |
7d00ffec | 19500 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
19501 | add_partial_symbol (&pdi, cu); |
19502 | ||
cd9983dd | 19503 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19504 | continue; |
19505 | } | |
19506 | ||
d8228535 JK |
19507 | /* The exception for DW_TAG_typedef with has_children above is |
19508 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 19509 | type_name_or_error will error on such types later. |
d8228535 JK |
19510 | |
19511 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
19512 | it could not find the child DIEs referenced later, this is checked | |
19513 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
19514 | ||
cd9983dd | 19515 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 19516 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 19517 | "- DIE at %s [in module %s]"), |
cd9983dd | 19518 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 19519 | |
72bf9492 DJ |
19520 | /* If we're at the second level, and we're an enumerator, and |
19521 | our parent has no specification (meaning possibly lives in a | |
19522 | namespace elsewhere), then we can add the partial symbol now | |
19523 | instead of queueing it. */ | |
cd9983dd | 19524 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
19525 | && parent_die != NULL |
19526 | && parent_die->die_parent == NULL | |
19527 | && parent_die->tag == DW_TAG_enumeration_type | |
19528 | && parent_die->has_specification == 0) | |
19529 | { | |
7d00ffec | 19530 | if (pdi.raw_name == NULL) |
b98664d3 | 19531 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 19532 | else if (building_psymtab) |
f0fbb768 | 19533 | add_partial_symbol (&pdi, cu); |
72bf9492 | 19534 | |
cd9983dd | 19535 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19536 | continue; |
19537 | } | |
19538 | ||
cd9983dd | 19539 | struct partial_die_info *part_die |
6f06d47b | 19540 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 19541 | |
72bf9492 DJ |
19542 | /* We'll save this DIE so link it in. */ |
19543 | part_die->die_parent = parent_die; | |
19544 | part_die->die_sibling = NULL; | |
19545 | part_die->die_child = NULL; | |
19546 | ||
19547 | if (last_die && last_die == parent_die) | |
19548 | last_die->die_child = part_die; | |
19549 | else if (last_die) | |
19550 | last_die->die_sibling = part_die; | |
19551 | ||
19552 | last_die = part_die; | |
19553 | ||
19554 | if (first_die == NULL) | |
19555 | first_die = part_die; | |
19556 | ||
19557 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
19558 | find interesting need to be in the hash table, because we | |
19559 | also have the parent/sibling/child chains; only those that we | |
19560 | might refer to by offset later during partial symbol reading. | |
19561 | ||
19562 | For now this means things that might have be the target of a | |
19563 | DW_AT_specification, DW_AT_abstract_origin, or | |
19564 | DW_AT_extension. DW_AT_extension will refer only to | |
19565 | namespaces; DW_AT_abstract_origin refers to functions (and | |
19566 | many things under the function DIE, but we do not recurse | |
19567 | into function DIEs during partial symbol reading) and | |
19568 | possibly variables as well; DW_AT_specification refers to | |
19569 | declarations. Declarations ought to have the DW_AT_declaration | |
19570 | flag. It happens that GCC forgets to put it in sometimes, but | |
19571 | only for functions, not for types. | |
19572 | ||
19573 | Adding more things than necessary to the hash table is harmless | |
19574 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
19575 | wasted time in find_partial_die, when we reread the compilation |
19576 | unit with load_all_dies set. */ | |
72bf9492 | 19577 | |
5afb4e99 | 19578 | if (load_all |
72929c62 | 19579 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 19580 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
19581 | || abbrev->tag == DW_TAG_variable |
19582 | || abbrev->tag == DW_TAG_namespace | |
19583 | || part_die->is_declaration) | |
19584 | { | |
19585 | void **slot; | |
19586 | ||
19587 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
19588 | to_underlying (part_die->sect_off), |
19589 | INSERT); | |
72bf9492 DJ |
19590 | *slot = part_die; |
19591 | } | |
19592 | ||
72bf9492 | 19593 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 19594 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
19595 | languages we have to, so that we can get at method physnames |
19596 | to infer fully qualified class names, for DW_AT_specification, | |
19597 | and for C++ template arguments. For C++, we also look one level | |
19598 | inside functions to find template arguments (if the name of the | |
19599 | function does not already contain the template arguments). | |
bc30ff58 | 19600 | |
0a4b0913 AB |
19601 | For Ada and Fortran, we need to scan the children of subprograms |
19602 | and lexical blocks as well because these languages allow the | |
19603 | definition of nested entities that could be interesting for the | |
19604 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 19605 | if (last_die->has_children |
5afb4e99 DJ |
19606 | && (load_all |
19607 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 19608 | || last_die->tag == DW_TAG_module |
72bf9492 | 19609 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
19610 | || (cu->language == language_cplus |
19611 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
19612 | && (last_die->raw_name == NULL |
19613 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
19614 | || (cu->language != language_c |
19615 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 19616 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 19617 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 19618 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
19619 | || ((cu->language == language_ada |
19620 | || cu->language == language_fortran) | |
bc30ff58 JB |
19621 | && (last_die->tag == DW_TAG_subprogram |
19622 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
19623 | { |
19624 | nesting_level++; | |
19625 | parent_die = last_die; | |
19626 | continue; | |
19627 | } | |
19628 | ||
19629 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19630 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
19631 | |
19632 | /* Back to the top, do it again. */ | |
19633 | } | |
19634 | } | |
19635 | ||
6f06d47b YQ |
19636 | partial_die_info::partial_die_info (sect_offset sect_off_, |
19637 | struct abbrev_info *abbrev) | |
19638 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
19639 | { | |
19640 | } | |
19641 | ||
7d00ffec TT |
19642 | /* See class definition. */ |
19643 | ||
19644 | const char * | |
19645 | partial_die_info::name (dwarf2_cu *cu) | |
19646 | { | |
19647 | if (!canonical_name && raw_name != nullptr) | |
19648 | { | |
19649 | struct objfile *objfile = cu->per_objfile->objfile; | |
19650 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
19651 | canonical_name = 1; | |
19652 | } | |
19653 | ||
19654 | return raw_name; | |
19655 | } | |
19656 | ||
35cc7ed7 YQ |
19657 | /* Read a minimal amount of information into the minimal die structure. |
19658 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 19659 | |
48fbe735 YQ |
19660 | const gdb_byte * |
19661 | partial_die_info::read (const struct die_reader_specs *reader, | |
19662 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 19663 | { |
dee91e82 | 19664 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 19665 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 19666 | unsigned int i; |
c5aa993b | 19667 | int has_low_pc_attr = 0; |
c906108c | 19668 | int has_high_pc_attr = 0; |
91da1414 | 19669 | int high_pc_relative = 0; |
c906108c | 19670 | |
fd0a254f | 19671 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 19672 | { |
e7da7f8f | 19673 | attribute attr; |
7a5f294d | 19674 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
18a8505e | 19675 | /* String and address offsets that need to do the reprocessing have |
dda83cd7 | 19676 | already been read at this point, so there is no need to wait until |
18a8505e | 19677 | the loop terminates to do the reprocessing. */ |
7a5f294d | 19678 | if (attr.requires_reprocessing_p ()) |
d0ce17d8 | 19679 | read_attribute_reprocess (reader, &attr, tag); |
c906108c | 19680 | /* Store the data if it is of an attribute we want to keep in a |
dda83cd7 | 19681 | partial symbol table. */ |
c906108c SS |
19682 | switch (attr.name) |
19683 | { | |
19684 | case DW_AT_name: | |
48fbe735 | 19685 | switch (tag) |
71c25dea TT |
19686 | { |
19687 | case DW_TAG_compile_unit: | |
95554aad | 19688 | case DW_TAG_partial_unit: |
348e048f | 19689 | case DW_TAG_type_unit: |
71c25dea TT |
19690 | /* Compilation units have a DW_AT_name that is a filename, not |
19691 | a source language identifier. */ | |
19692 | case DW_TAG_enumeration_type: | |
19693 | case DW_TAG_enumerator: | |
19694 | /* These tags always have simple identifiers already; no need | |
19695 | to canonicalize them. */ | |
7d00ffec | 19696 | canonical_name = 1; |
2c830f54 | 19697 | raw_name = attr.as_string (); |
71c25dea TT |
19698 | break; |
19699 | default: | |
7d00ffec | 19700 | canonical_name = 0; |
2c830f54 | 19701 | raw_name = attr.as_string (); |
71c25dea TT |
19702 | break; |
19703 | } | |
c906108c | 19704 | break; |
31ef98ae | 19705 | case DW_AT_linkage_name: |
c906108c | 19706 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
19707 | /* Note that both forms of linkage name might appear. We |
19708 | assume they will be the same, and we only store the last | |
19709 | one we see. */ | |
95f982e5 | 19710 | linkage_name = attr.as_string (); |
c906108c SS |
19711 | break; |
19712 | case DW_AT_low_pc: | |
19713 | has_low_pc_attr = 1; | |
95f982e5 | 19714 | lowpc = attr.as_address (); |
c906108c SS |
19715 | break; |
19716 | case DW_AT_high_pc: | |
19717 | has_high_pc_attr = 1; | |
95f982e5 | 19718 | highpc = attr.as_address (); |
cd6c91b4 | 19719 | if (cu->header.version >= 4 && attr.form_is_constant ()) |
31aa7e4e | 19720 | high_pc_relative = 1; |
c906108c SS |
19721 | break; |
19722 | case DW_AT_location: | |
dda83cd7 SM |
19723 | /* Support the .debug_loc offsets. */ |
19724 | if (attr.form_is_block ()) | |
19725 | { | |
9d2246fc | 19726 | d.locdesc = attr.as_block (); |
dda83cd7 SM |
19727 | } |
19728 | else if (attr.form_is_section_offset ()) | |
19729 | { | |
4d3c2250 | 19730 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 SM |
19731 | } |
19732 | else | |
19733 | { | |
4d3c2250 KB |
19734 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
19735 | "partial symbol information"); | |
dda83cd7 | 19736 | } |
c906108c | 19737 | break; |
c906108c | 19738 | case DW_AT_external: |
c45bc3f8 | 19739 | is_external = attr.as_boolean (); |
c906108c SS |
19740 | break; |
19741 | case DW_AT_declaration: | |
c45bc3f8 | 19742 | is_declaration = attr.as_boolean (); |
c906108c SS |
19743 | break; |
19744 | case DW_AT_type: | |
48fbe735 | 19745 | has_type = 1; |
c906108c SS |
19746 | break; |
19747 | case DW_AT_abstract_origin: | |
19748 | case DW_AT_specification: | |
72bf9492 | 19749 | case DW_AT_extension: |
48fbe735 | 19750 | has_specification = 1; |
0826b30a | 19751 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 19752 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 19753 | || cu->per_cu->is_dwz); |
c906108c SS |
19754 | break; |
19755 | case DW_AT_sibling: | |
19756 | /* Ignore absolute siblings, they might point outside of | |
19757 | the current compile unit. */ | |
19758 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19759 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19760 | else |
b9502d3f | 19761 | { |
48fbe735 | 19762 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 19763 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 19764 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
19765 | |
19766 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19767 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 19768 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 19769 | reader->die_section->overflow_complaint (); |
b9502d3f | 19770 | else |
48fbe735 | 19771 | sibling = sibling_ptr; |
b9502d3f | 19772 | } |
c906108c | 19773 | break; |
dda83cd7 SM |
19774 | case DW_AT_byte_size: |
19775 | has_byte_size = 1; | |
19776 | break; | |
19777 | case DW_AT_const_value: | |
19778 | has_const_value = 1; | |
19779 | break; | |
68511cec CES |
19780 | case DW_AT_calling_convention: |
19781 | /* DWARF doesn't provide a way to identify a program's source-level | |
19782 | entry point. DW_AT_calling_convention attributes are only meant | |
19783 | to describe functions' calling conventions. | |
19784 | ||
19785 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19786 | Fortran, and before DWARF 4 DW_CC_program was the only |
19787 | piece of debugging information whose definition refers to | |
19788 | a 'main program' at all, several compilers marked Fortran | |
19789 | main programs with DW_CC_program --- even when those | |
19790 | functions use the standard calling conventions. | |
19791 | ||
19792 | Although DWARF now specifies a way to provide this | |
19793 | information, we support this practice for backward | |
19794 | compatibility. */ | |
529908cb | 19795 | if (attr.constant_value (0) == DW_CC_program |
0c1b455e | 19796 | && cu->language == language_fortran) |
48fbe735 | 19797 | main_subprogram = 1; |
68511cec | 19798 | break; |
481860b3 | 19799 | case DW_AT_inline: |
529908cb TT |
19800 | { |
19801 | LONGEST value = attr.constant_value (-1); | |
19802 | if (value == DW_INL_inlined | |
19803 | || value == DW_INL_declared_inlined) | |
19804 | may_be_inlined = 1; | |
19805 | } | |
481860b3 | 19806 | break; |
95554aad TT |
19807 | |
19808 | case DW_AT_import: | |
48fbe735 | 19809 | if (tag == DW_TAG_imported_unit) |
36586728 | 19810 | { |
0826b30a | 19811 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 19812 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
19813 | || cu->per_cu->is_dwz); |
19814 | } | |
95554aad TT |
19815 | break; |
19816 | ||
0c1b455e | 19817 | case DW_AT_main_subprogram: |
c45bc3f8 | 19818 | main_subprogram = attr.as_boolean (); |
0c1b455e TT |
19819 | break; |
19820 | ||
05caa1d2 TT |
19821 | case DW_AT_ranges: |
19822 | { | |
d0ce17d8 CT |
19823 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO |
19824 | skeleton. We take advantage of the fact the DW_AT_ranges | |
19825 | does not appear in DW_TAG_compile_unit of DWO files. | |
19826 | ||
19827 | Attributes of the form DW_FORM_rnglistx have already had | |
dda83cd7 | 19828 | their value changed by read_rnglist_index and already |
d0ce17d8 CT |
19829 | include DW_AT_rnglists_base, so don't need to add the ranges |
19830 | base, either. */ | |
19831 | int need_ranges_base = (tag != DW_TAG_compile_unit | |
19832 | && attr.form != DW_FORM_rnglistx); | |
529908cb TT |
19833 | /* It would be nice to reuse dwarf2_get_pc_bounds here, |
19834 | but that requires a full DIE, so instead we just | |
19835 | reimplement it. */ | |
9f6c202e | 19836 | unsigned int ranges_offset = (attr.as_unsigned () |
05caa1d2 TT |
19837 | + (need_ranges_base |
19838 | ? cu->ranges_base | |
19839 | : 0)); | |
19840 | ||
19841 | /* Value of the DW_AT_ranges attribute is the offset in the | |
19842 | .debug_ranges section. */ | |
19843 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
d0ce17d8 | 19844 | nullptr, tag)) |
05caa1d2 TT |
19845 | has_pc_info = 1; |
19846 | } | |
19847 | break; | |
19848 | ||
c906108c SS |
19849 | default: |
19850 | break; | |
19851 | } | |
19852 | } | |
19853 | ||
10d06d82 TT |
19854 | /* For Ada, if both the name and the linkage name appear, we prefer |
19855 | the latter. This lets "catch exception" work better, regardless | |
19856 | of the order in which the name and linkage name were emitted. | |
19857 | Really, though, this is just a workaround for the fact that gdb | |
19858 | doesn't store both the name and the linkage name. */ | |
19859 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 19860 | raw_name = linkage_name; |
10d06d82 | 19861 | |
91da1414 | 19862 | if (high_pc_relative) |
48fbe735 | 19863 | highpc += lowpc; |
91da1414 | 19864 | |
9373cf26 JK |
19865 | if (has_low_pc_attr && has_high_pc_attr) |
19866 | { | |
19867 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19868 | eliminate duplicate copies of functions and vtables and such. | |
19869 | The linker will arbitrarily choose one and discard the others. | |
19870 | The AT_*_pc values for such functions refer to local labels in | |
19871 | these sections. If the section from that file was discarded, the | |
19872 | labels are not in the output, so the relocs get a value of 0. | |
19873 | If this is a discarded function, mark the pc bounds as invalid, | |
19874 | so that GDB will ignore it. */ | |
976ca316 | 19875 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 19876 | { |
976ca316 | 19877 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19878 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19879 | |
b98664d3 | 19880 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19881 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19882 | paddress (gdbarch, lowpc), |
19883 | sect_offset_str (sect_off), | |
9d8780f0 | 19884 | objfile_name (objfile)); |
9373cf26 JK |
19885 | } |
19886 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19887 | else if (lowpc >= highpc) |
9373cf26 | 19888 | { |
976ca316 | 19889 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19890 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19891 | |
b98664d3 | 19892 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19893 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19894 | paddress (gdbarch, lowpc), |
19895 | paddress (gdbarch, highpc), | |
19896 | sect_offset_str (sect_off), | |
9c541725 | 19897 | objfile_name (objfile)); |
9373cf26 JK |
19898 | } |
19899 | else | |
48fbe735 | 19900 | has_pc_info = 1; |
9373cf26 | 19901 | } |
85cbf3d3 | 19902 | |
c906108c SS |
19903 | return info_ptr; |
19904 | } | |
19905 | ||
72bf9492 DJ |
19906 | /* Find a cached partial DIE at OFFSET in CU. */ |
19907 | ||
d590ff25 YQ |
19908 | struct partial_die_info * |
19909 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19910 | { |
19911 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19912 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19913 | |
9a3c8263 | 19914 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19915 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19916 | to_underlying (sect_off))); |
72bf9492 | 19917 | |
72bf9492 DJ |
19918 | return lookup_die; |
19919 | } | |
19920 | ||
348e048f DE |
19921 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19922 | except in the case of .debug_types DIEs which do not reference | |
19923 | outside their CU (they do however referencing other types via | |
55f1336d | 19924 | DW_FORM_ref_sig8). */ |
72bf9492 | 19925 | |
122cf0f2 | 19926 | static const struct cu_partial_die_info |
9c541725 | 19927 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19928 | { |
976ca316 SM |
19929 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19930 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 19931 | struct partial_die_info *pd = NULL; |
72bf9492 | 19932 | |
36586728 | 19933 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 19934 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 19935 | { |
d590ff25 | 19936 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 19937 | if (pd != NULL) |
fb816e8b | 19938 | return { cu, pd }; |
0d99eb77 DE |
19939 | /* We missed recording what we needed. |
19940 | Load all dies and try again. */ | |
5afb4e99 | 19941 | } |
0d99eb77 DE |
19942 | else |
19943 | { | |
19944 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19945 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19946 | { |
9d8780f0 SM |
19947 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19948 | " external reference to offset %s [in module %s].\n"), | |
19949 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19950 | bfd_get_filename (objfile->obfd)); |
19951 | } | |
7188ed02 SM |
19952 | dwarf2_per_cu_data *per_cu |
19953 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 19954 | per_objfile); |
72bf9492 | 19955 | |
976ca316 | 19956 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 19957 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 19958 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 19959 | |
976ca316 | 19960 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
19961 | |
19962 | cu->last_used = 0; | |
19963 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 19964 | } |
5afb4e99 | 19965 | |
dee91e82 DE |
19966 | /* If we didn't find it, and not all dies have been loaded, |
19967 | load them all and try again. */ | |
19968 | ||
7188ed02 | 19969 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 19970 | { |
7188ed02 | 19971 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
19972 | |
19973 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19974 | THIS_CU->cu may already be in use. So we can't just free it and | |
19975 | replace its DIEs with the ones we read in. Instead, we leave those | |
19976 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19977 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19978 | set. */ | |
976ca316 | 19979 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 19980 | |
7188ed02 | 19981 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19982 | } |
19983 | ||
19984 | if (pd == NULL) | |
521894aa | 19985 | error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"), |
9d8780f0 | 19986 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 19987 | return { cu, pd }; |
72bf9492 DJ |
19988 | } |
19989 | ||
abc72ce4 DE |
19990 | /* See if we can figure out if the class lives in a namespace. We do |
19991 | this by looking for a member function; its demangled name will | |
19992 | contain namespace info, if there is any. */ | |
19993 | ||
19994 | static void | |
19995 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19996 | struct dwarf2_cu *cu) | |
19997 | { | |
19998 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19999 | what template types look like, because the demangler | |
20000 | frequently doesn't give the same name as the debug info. We | |
20001 | could fix this by only using the demangled name to get the | |
20002 | prefix (but see comment in read_structure_type). */ | |
20003 | ||
20004 | struct partial_die_info *real_pdi; | |
20005 | struct partial_die_info *child_pdi; | |
20006 | ||
20007 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
20008 | we should not do this. We'll prepend the parent's fully qualified | |
20009 | name when we create the partial symbol. */ | |
20010 | ||
20011 | real_pdi = struct_pdi; | |
20012 | while (real_pdi->has_specification) | |
fb816e8b | 20013 | { |
122cf0f2 AB |
20014 | auto res = find_partial_die (real_pdi->spec_offset, |
20015 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
20016 | real_pdi = res.pdi; |
20017 | cu = res.cu; | |
20018 | } | |
abc72ce4 DE |
20019 | |
20020 | if (real_pdi->die_parent != NULL) | |
20021 | return; | |
20022 | ||
20023 | for (child_pdi = struct_pdi->die_child; | |
20024 | child_pdi != NULL; | |
20025 | child_pdi = child_pdi->die_sibling) | |
20026 | { | |
20027 | if (child_pdi->tag == DW_TAG_subprogram | |
20028 | && child_pdi->linkage_name != NULL) | |
20029 | { | |
43816ebc | 20030 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
20031 | (cu->language_defn->class_name_from_physname |
20032 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
20033 | if (actual_class_name != NULL) |
20034 | { | |
5e22e966 | 20035 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
20036 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
20037 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
20038 | } |
20039 | break; | |
20040 | } | |
20041 | } | |
20042 | } | |
20043 | ||
25c11aca TV |
20044 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
20045 | attribute. */ | |
20046 | ||
20047 | static bool | |
20048 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
20049 | { | |
20050 | switch (tag) | |
20051 | { | |
20052 | case DW_TAG_constant: | |
20053 | case DW_TAG_enumerator: | |
20054 | case DW_TAG_formal_parameter: | |
20055 | case DW_TAG_template_value_param: | |
20056 | case DW_TAG_variable: | |
20057 | return true; | |
20058 | } | |
20059 | ||
20060 | return false; | |
20061 | } | |
20062 | ||
52356b79 YQ |
20063 | void |
20064 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 20065 | { |
abc72ce4 DE |
20066 | /* Once we've fixed up a die, there's no point in doing so again. |
20067 | This also avoids a memory leak if we were to call | |
20068 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 20069 | if (fixup_called) |
abc72ce4 DE |
20070 | return; |
20071 | ||
72bf9492 DJ |
20072 | /* If we found a reference attribute and the DIE has no name, try |
20073 | to find a name in the referred to DIE. */ | |
20074 | ||
7d00ffec | 20075 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
20076 | { |
20077 | struct partial_die_info *spec_die; | |
72bf9492 | 20078 | |
122cf0f2 | 20079 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
20080 | spec_die = res.pdi; |
20081 | cu = res.cu; | |
72bf9492 | 20082 | |
52356b79 | 20083 | spec_die->fixup (cu); |
72bf9492 | 20084 | |
7d00ffec | 20085 | if (spec_die->raw_name) |
72bf9492 | 20086 | { |
7d00ffec TT |
20087 | raw_name = spec_die->raw_name; |
20088 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
20089 | |
20090 | /* Copy DW_AT_external attribute if it is set. */ | |
20091 | if (spec_die->is_external) | |
52356b79 | 20092 | is_external = spec_die->is_external; |
72bf9492 DJ |
20093 | } |
20094 | } | |
20095 | ||
25c11aca TV |
20096 | if (!has_const_value && has_specification |
20097 | && can_have_DW_AT_const_value_p (tag)) | |
20098 | { | |
20099 | struct partial_die_info *spec_die; | |
20100 | ||
20101 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
20102 | spec_die = res.pdi; | |
20103 | cu = res.cu; | |
20104 | ||
20105 | spec_die->fixup (cu); | |
20106 | ||
20107 | if (spec_die->has_const_value) | |
20108 | { | |
20109 | /* Copy DW_AT_const_value attribute if it is set. */ | |
20110 | has_const_value = spec_die->has_const_value; | |
20111 | } | |
20112 | } | |
20113 | ||
72bf9492 | 20114 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 20115 | |
7d00ffec TT |
20116 | if (raw_name == NULL && tag == DW_TAG_namespace) |
20117 | { | |
20118 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
20119 | canonical_name = 1; | |
20120 | } | |
72bf9492 | 20121 | |
abc72ce4 DE |
20122 | /* If there is no parent die to provide a namespace, and there are |
20123 | children, see if we can determine the namespace from their linkage | |
122d1940 | 20124 | name. */ |
abc72ce4 | 20125 | if (cu->language == language_cplus |
5e22e966 | 20126 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
20127 | && die_parent == NULL |
20128 | && has_children | |
20129 | && (tag == DW_TAG_class_type | |
20130 | || tag == DW_TAG_structure_type | |
20131 | || tag == DW_TAG_union_type)) | |
20132 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 20133 | |
53832f31 TT |
20134 | /* GCC might emit a nameless struct or union that has a linkage |
20135 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 20136 | if (raw_name == NULL |
52356b79 YQ |
20137 | && (tag == DW_TAG_class_type |
20138 | || tag == DW_TAG_interface_type | |
20139 | || tag == DW_TAG_structure_type | |
20140 | || tag == DW_TAG_union_type) | |
20141 | && linkage_name != NULL) | |
53832f31 | 20142 | { |
43816ebc TT |
20143 | gdb::unique_xmalloc_ptr<char> demangled |
20144 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
20145 | if (demangled != nullptr) | |
53832f31 | 20146 | { |
96408a79 SA |
20147 | const char *base; |
20148 | ||
20149 | /* Strip any leading namespaces/classes, keep only the base name. | |
20150 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
20151 | base = strrchr (demangled.get (), ':'); |
20152 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
20153 | base++; |
20154 | else | |
43816ebc | 20155 | base = demangled.get (); |
96408a79 | 20156 | |
5e22e966 | 20157 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
20158 | raw_name = objfile->intern (base); |
20159 | canonical_name = 1; | |
53832f31 TT |
20160 | } |
20161 | } | |
20162 | ||
52356b79 | 20163 | fixup_called = 1; |
72bf9492 DJ |
20164 | } |
20165 | ||
d0ce17d8 | 20166 | /* Read the .debug_loclists or .debug_rnglists header (they are the same format) |
a1c40103 SM |
20167 | contents from the given SECTION in the HEADER. |
20168 | ||
20169 | HEADER_OFFSET is the offset of the header in the section. */ | |
41144253 | 20170 | static void |
d0ce17d8 | 20171 | read_loclists_rnglists_header (struct loclists_rnglists_header *header, |
a1c40103 SM |
20172 | struct dwarf2_section_info *section, |
20173 | sect_offset header_offset) | |
41144253 | 20174 | { |
20175 | unsigned int bytes_read; | |
20176 | bfd *abfd = section->get_bfd_owner (); | |
a1c40103 SM |
20177 | const gdb_byte *info_ptr = section->buffer + to_underlying (header_offset); |
20178 | ||
41144253 | 20179 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); |
20180 | info_ptr += bytes_read; | |
a1c40103 | 20181 | |
41144253 | 20182 | header->version = read_2_bytes (abfd, info_ptr); |
20183 | info_ptr += 2; | |
a1c40103 | 20184 | |
41144253 | 20185 | header->addr_size = read_1_byte (abfd, info_ptr); |
20186 | info_ptr += 1; | |
a1c40103 | 20187 | |
41144253 | 20188 | header->segment_collector_size = read_1_byte (abfd, info_ptr); |
20189 | info_ptr += 1; | |
a1c40103 | 20190 | |
41144253 | 20191 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); |
20192 | } | |
20193 | ||
20194 | /* Return the DW_AT_loclists_base value for the CU. */ | |
20195 | static ULONGEST | |
20196 | lookup_loclist_base (struct dwarf2_cu *cu) | |
20197 | { | |
20198 | /* For the .dwo unit, the loclist_base points to the first offset following | |
20199 | the header. The header consists of the following entities- | |
20200 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
20201 | bit format) | |
20202 | 2. version (2 bytes) | |
20203 | 3. address size (1 byte) | |
20204 | 4. segment selector size (1 byte) | |
20205 | 5. offset entry count (4 bytes) | |
20206 | These sizes are derived as per the DWARFv5 standard. */ | |
20207 | if (cu->dwo_unit != nullptr) | |
20208 | { | |
20209 | if (cu->header.initial_length_size == 4) | |
20210 | return LOCLIST_HEADER_SIZE32; | |
20211 | return LOCLIST_HEADER_SIZE64; | |
20212 | } | |
20213 | return cu->loclist_base; | |
20214 | } | |
20215 | ||
20216 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
20217 | array of offsets in the .debug_loclists section. */ | |
20218 | static CORE_ADDR | |
20219 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
20220 | { | |
976ca316 SM |
20221 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20222 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 20223 | bfd *abfd = objfile->obfd; |
a1c40103 SM |
20224 | ULONGEST loclist_header_size = |
20225 | (cu->header.initial_length_size == 4 ? LOCLIST_HEADER_SIZE32 | |
20226 | : LOCLIST_HEADER_SIZE64); | |
41144253 | 20227 | ULONGEST loclist_base = lookup_loclist_base (cu); |
05787bad SM |
20228 | |
20229 | /* Offset in .debug_loclists of the offset for LOCLIST_INDEX. */ | |
20230 | ULONGEST start_offset = | |
20231 | loclist_base + loclist_index * cu->header.offset_size; | |
20232 | ||
a1c40103 | 20233 | /* Get loclists section. */ |
41144253 | 20234 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
20235 | ||
a1c40103 | 20236 | /* Read the loclists section content. */ |
41144253 | 20237 | section->read (objfile); |
20238 | if (section->buffer == NULL) | |
a0c1eeba SM |
20239 | error (_("DW_FORM_loclistx used without .debug_loclists " |
20240 | "section [in module %s]"), objfile_name (objfile)); | |
20241 | ||
a1c40103 SM |
20242 | /* DW_AT_loclists_base points after the .debug_loclists contribution header, |
20243 | so if loclist_base is smaller than the header size, we have a problem. */ | |
20244 | if (loclist_base < loclist_header_size) | |
20245 | error (_("DW_AT_loclists_base is smaller than header size [in module %s]"), | |
20246 | objfile_name (objfile)); | |
20247 | ||
20248 | /* Read the header of the loclists contribution. */ | |
d0ce17d8 | 20249 | struct loclists_rnglists_header header; |
a1c40103 SM |
20250 | read_loclists_rnglists_header (&header, section, |
20251 | (sect_offset) (loclist_base - loclist_header_size)); | |
20252 | ||
20253 | /* Verify the loclist index is valid. */ | |
41144253 | 20254 | if (loclist_index >= header.offset_entry_count) |
a0c1eeba SM |
20255 | error (_("DW_FORM_loclistx pointing outside of " |
20256 | ".debug_loclists offset array [in module %s]"), | |
20257 | objfile_name (objfile)); | |
20258 | ||
05787bad SM |
20259 | /* Validate that reading won't go beyond the end of the section. */ |
20260 | if (start_offset + cu->header.offset_size > section->size) | |
20261 | error (_("Reading DW_FORM_loclistx index beyond end of" | |
20262 | ".debug_loclists section [in module %s]"), | |
20263 | objfile_name (objfile)); | |
20264 | ||
20265 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
41144253 | 20266 | |
20267 | if (cu->header.offset_size == 4) | |
20268 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
20269 | else | |
20270 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
20271 | } | |
20272 | ||
d0ce17d8 CT |
20273 | /* Given a DW_FORM_rnglistx value RNGLIST_INDEX, fetch the offset from the |
20274 | array of offsets in the .debug_rnglists section. */ | |
20275 | static CORE_ADDR | |
20276 | read_rnglist_index (struct dwarf2_cu *cu, ULONGEST rnglist_index, | |
20277 | dwarf_tag tag) | |
20278 | { | |
20279 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
20280 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
20281 | bfd *abfd = objfile->obfd; | |
20282 | ULONGEST rnglist_header_size = | |
20283 | (cu->header.initial_length_size == 4 ? RNGLIST_HEADER_SIZE32 | |
20284 | : RNGLIST_HEADER_SIZE64); | |
20285 | ULONGEST rnglist_base = | |
20286 | (cu->dwo_unit != nullptr) ? rnglist_header_size : cu->ranges_base; | |
5e4d9bbc SM |
20287 | |
20288 | /* Offset in .debug_rnglists of the offset for RNGLIST_INDEX. */ | |
d0ce17d8 CT |
20289 | ULONGEST start_offset = |
20290 | rnglist_base + rnglist_index * cu->header.offset_size; | |
20291 | ||
20292 | /* Get rnglists section. */ | |
20293 | struct dwarf2_section_info *section = cu_debug_rnglists_section (cu, tag); | |
20294 | ||
20295 | /* Read the rnglists section content. */ | |
20296 | section->read (objfile); | |
20297 | if (section->buffer == nullptr) | |
20298 | error (_("DW_FORM_rnglistx used without .debug_rnglists section " | |
20299 | "[in module %s]"), | |
20300 | objfile_name (objfile)); | |
20301 | ||
a1c40103 SM |
20302 | /* DW_AT_rnglists_base points after the .debug_rnglists contribution header, |
20303 | so if rnglist_base is smaller than the header size, we have a problem. */ | |
20304 | if (rnglist_base < rnglist_header_size) | |
20305 | error (_("DW_AT_rnglists_base is smaller than header size [in module %s]"), | |
20306 | objfile_name (objfile)); | |
20307 | ||
20308 | /* Read the header of the rnglists contribution. */ | |
d0ce17d8 | 20309 | struct loclists_rnglists_header header; |
a1c40103 SM |
20310 | read_loclists_rnglists_header (&header, section, |
20311 | (sect_offset) (rnglist_base - rnglist_header_size)); | |
20312 | ||
20313 | /* Verify the rnglist index is valid. */ | |
d0ce17d8 CT |
20314 | if (rnglist_index >= header.offset_entry_count) |
20315 | error (_("DW_FORM_rnglistx index pointing outside of " | |
20316 | ".debug_rnglists offset array [in module %s]"), | |
20317 | objfile_name (objfile)); | |
20318 | ||
d0ce17d8 | 20319 | /* Validate that reading won't go beyond the end of the section. */ |
5e4d9bbc | 20320 | if (start_offset + cu->header.offset_size > section->size) |
d0ce17d8 CT |
20321 | error (_("Reading DW_FORM_rnglistx index beyond end of" |
20322 | ".debug_rnglists section [in module %s]"), | |
20323 | objfile_name (objfile)); | |
20324 | ||
20325 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
20326 | ||
20327 | if (cu->header.offset_size == 4) | |
20328 | return read_4_bytes (abfd, info_ptr) + rnglist_base; | |
20329 | else | |
20330 | return read_8_bytes (abfd, info_ptr) + rnglist_base; | |
20331 | } | |
20332 | ||
18a8505e AT |
20333 | /* Process the attributes that had to be skipped in the first round. These |
20334 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
20335 | They could not have been processed in the first round, because at the time | |
20336 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
20337 | static void |
20338 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 20339 | struct attribute *attr, dwarf_tag tag) |
18a8505e AT |
20340 | { |
20341 | struct dwarf2_cu *cu = reader->cu; | |
20342 | switch (attr->form) | |
20343 | { | |
20344 | case DW_FORM_addrx: | |
20345 | case DW_FORM_GNU_addr_index: | |
36d378cf TT |
20346 | attr->set_address (read_addr_index (cu, |
20347 | attr->as_unsigned_reprocess ())); | |
dda83cd7 | 20348 | break; |
41144253 | 20349 | case DW_FORM_loclistx: |
b1829e1b SM |
20350 | { |
20351 | CORE_ADDR loclists_sect_off | |
20352 | = read_loclist_index (cu, attr->as_unsigned_reprocess ()); | |
20353 | ||
20354 | attr->set_unsigned (loclists_sect_off); | |
20355 | } | |
20356 | break; | |
d0ce17d8 | 20357 | case DW_FORM_rnglistx: |
b1829e1b SM |
20358 | { |
20359 | CORE_ADDR rnglists_sect_off | |
20360 | = read_rnglist_index (cu, attr->as_unsigned_reprocess (), tag); | |
20361 | ||
20362 | attr->set_unsigned (rnglists_sect_off); | |
20363 | } | |
dda83cd7 | 20364 | break; |
18a8505e AT |
20365 | case DW_FORM_strx: |
20366 | case DW_FORM_strx1: | |
20367 | case DW_FORM_strx2: | |
20368 | case DW_FORM_strx3: | |
20369 | case DW_FORM_strx4: | |
20370 | case DW_FORM_GNU_str_index: | |
20371 | { | |
fe56917a | 20372 | unsigned int str_index = attr->as_unsigned_reprocess (); |
c6481205 | 20373 | gdb_assert (!attr->canonical_string_p ()); |
18a8505e | 20374 | if (reader->dwo_file != NULL) |
c6481205 TT |
20375 | attr->set_string_noncanonical (read_dwo_str_index (reader, |
20376 | str_index)); | |
18a8505e | 20377 | else |
c6481205 TT |
20378 | attr->set_string_noncanonical (read_stub_str_index (cu, |
20379 | str_index)); | |
18a8505e AT |
20380 | break; |
20381 | } | |
20382 | default: | |
20383 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
20384 | } | |
20385 | } | |
20386 | ||
a8329558 | 20387 | /* Read an attribute value described by an attribute form. */ |
c906108c | 20388 | |
d521ce57 | 20389 | static const gdb_byte * |
dee91e82 DE |
20390 | read_attribute_value (const struct die_reader_specs *reader, |
20391 | struct attribute *attr, unsigned form, | |
7a5f294d | 20392 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 20393 | { |
dee91e82 | 20394 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
20395 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20396 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 20397 | bfd *abfd = reader->abfd; |
e7c27a73 | 20398 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
20399 | unsigned int bytes_read; |
20400 | struct dwarf_block *blk; | |
20401 | ||
aead7601 | 20402 | attr->form = (enum dwarf_form) form; |
a8329558 | 20403 | switch (form) |
c906108c | 20404 | { |
c906108c | 20405 | case DW_FORM_ref_addr: |
ae411497 | 20406 | if (cu->header.version == 2) |
414ad644 TT |
20407 | attr->set_unsigned (cu->header.read_address (abfd, info_ptr, |
20408 | &bytes_read)); | |
ae411497 | 20409 | else |
414ad644 TT |
20410 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20411 | &bytes_read)); | |
ae411497 TT |
20412 | info_ptr += bytes_read; |
20413 | break; | |
36586728 | 20414 | case DW_FORM_GNU_ref_alt: |
414ad644 TT |
20415 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20416 | &bytes_read)); | |
36586728 TT |
20417 | info_ptr += bytes_read; |
20418 | break; | |
ae411497 | 20419 | case DW_FORM_addr: |
08feed99 TT |
20420 | { |
20421 | struct gdbarch *gdbarch = objfile->arch (); | |
36d378cf TT |
20422 | CORE_ADDR addr = cu->header.read_address (abfd, info_ptr, &bytes_read); |
20423 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr); | |
20424 | attr->set_address (addr); | |
08feed99 TT |
20425 | info_ptr += bytes_read; |
20426 | } | |
c906108c SS |
20427 | break; |
20428 | case DW_FORM_block2: | |
7b5a2f43 | 20429 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20430 | blk->size = read_2_bytes (abfd, info_ptr); |
20431 | info_ptr += 2; | |
20432 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20433 | info_ptr += blk->size; | |
9d2246fc | 20434 | attr->set_block (blk); |
c906108c SS |
20435 | break; |
20436 | case DW_FORM_block4: | |
7b5a2f43 | 20437 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20438 | blk->size = read_4_bytes (abfd, info_ptr); |
20439 | info_ptr += 4; | |
20440 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20441 | info_ptr += blk->size; | |
9d2246fc | 20442 | attr->set_block (blk); |
c906108c SS |
20443 | break; |
20444 | case DW_FORM_data2: | |
414ad644 | 20445 | attr->set_unsigned (read_2_bytes (abfd, info_ptr)); |
c906108c SS |
20446 | info_ptr += 2; |
20447 | break; | |
20448 | case DW_FORM_data4: | |
414ad644 | 20449 | attr->set_unsigned (read_4_bytes (abfd, info_ptr)); |
c906108c SS |
20450 | info_ptr += 4; |
20451 | break; | |
20452 | case DW_FORM_data8: | |
414ad644 | 20453 | attr->set_unsigned (read_8_bytes (abfd, info_ptr)); |
c906108c SS |
20454 | info_ptr += 8; |
20455 | break; | |
0224619f JK |
20456 | case DW_FORM_data16: |
20457 | blk = dwarf_alloc_block (cu); | |
20458 | blk->size = 16; | |
20459 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
20460 | info_ptr += 16; | |
9d2246fc | 20461 | attr->set_block (blk); |
0224619f | 20462 | break; |
2dc7f7b3 | 20463 | case DW_FORM_sec_offset: |
414ad644 TT |
20464 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20465 | &bytes_read)); | |
2dc7f7b3 TT |
20466 | info_ptr += bytes_read; |
20467 | break; | |
41144253 | 20468 | case DW_FORM_loclistx: |
20469 | { | |
7a5f294d TT |
20470 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20471 | &bytes_read)); | |
20472 | info_ptr += bytes_read; | |
41144253 | 20473 | } |
20474 | break; | |
c906108c | 20475 | case DW_FORM_string: |
c6481205 TT |
20476 | attr->set_string_noncanonical (read_direct_string (abfd, info_ptr, |
20477 | &bytes_read)); | |
c906108c SS |
20478 | info_ptr += bytes_read; |
20479 | break; | |
4bdf3d34 | 20480 | case DW_FORM_strp: |
36586728 TT |
20481 | if (!cu->per_cu->is_dwz) |
20482 | { | |
c6481205 TT |
20483 | attr->set_string_noncanonical |
20484 | (read_indirect_string (per_objfile, | |
20485 | abfd, info_ptr, cu_header, | |
20486 | &bytes_read)); | |
36586728 TT |
20487 | info_ptr += bytes_read; |
20488 | break; | |
20489 | } | |
20490 | /* FALLTHROUGH */ | |
43988095 JK |
20491 | case DW_FORM_line_strp: |
20492 | if (!cu->per_cu->is_dwz) | |
20493 | { | |
c6481205 TT |
20494 | attr->set_string_noncanonical |
20495 | (per_objfile->read_line_string (info_ptr, cu_header, | |
20496 | &bytes_read)); | |
43988095 JK |
20497 | info_ptr += bytes_read; |
20498 | break; | |
20499 | } | |
20500 | /* FALLTHROUGH */ | |
36586728 TT |
20501 | case DW_FORM_GNU_strp_alt: |
20502 | { | |
976ca316 | 20503 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
8266302d TT |
20504 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
20505 | &bytes_read); | |
36586728 | 20506 | |
c6481205 TT |
20507 | attr->set_string_noncanonical |
20508 | (dwz->read_string (objfile, str_offset)); | |
36586728 TT |
20509 | info_ptr += bytes_read; |
20510 | } | |
4bdf3d34 | 20511 | break; |
2dc7f7b3 | 20512 | case DW_FORM_exprloc: |
c906108c | 20513 | case DW_FORM_block: |
7b5a2f43 | 20514 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20515 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20516 | info_ptr += bytes_read; | |
20517 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20518 | info_ptr += blk->size; | |
9d2246fc | 20519 | attr->set_block (blk); |
c906108c SS |
20520 | break; |
20521 | case DW_FORM_block1: | |
7b5a2f43 | 20522 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20523 | blk->size = read_1_byte (abfd, info_ptr); |
20524 | info_ptr += 1; | |
20525 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20526 | info_ptr += blk->size; | |
9d2246fc | 20527 | attr->set_block (blk); |
c906108c SS |
20528 | break; |
20529 | case DW_FORM_data1: | |
c906108c | 20530 | case DW_FORM_flag: |
414ad644 | 20531 | attr->set_unsigned (read_1_byte (abfd, info_ptr)); |
c906108c SS |
20532 | info_ptr += 1; |
20533 | break; | |
2dc7f7b3 | 20534 | case DW_FORM_flag_present: |
414ad644 | 20535 | attr->set_unsigned (1); |
2dc7f7b3 | 20536 | break; |
c906108c | 20537 | case DW_FORM_sdata: |
1bc397c5 | 20538 | attr->set_signed (read_signed_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20539 | info_ptr += bytes_read; |
20540 | break; | |
18a8505e | 20541 | case DW_FORM_rnglistx: |
7a5f294d TT |
20542 | { |
20543 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, | |
20544 | &bytes_read)); | |
20545 | info_ptr += bytes_read; | |
20546 | } | |
20547 | break; | |
d0ce17d8 | 20548 | case DW_FORM_udata: |
414ad644 | 20549 | attr->set_unsigned (read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20550 | info_ptr += bytes_read; |
20551 | break; | |
20552 | case DW_FORM_ref1: | |
414ad644 TT |
20553 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20554 | + read_1_byte (abfd, info_ptr))); | |
c906108c SS |
20555 | info_ptr += 1; |
20556 | break; | |
20557 | case DW_FORM_ref2: | |
414ad644 TT |
20558 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20559 | + read_2_bytes (abfd, info_ptr))); | |
c906108c SS |
20560 | info_ptr += 2; |
20561 | break; | |
20562 | case DW_FORM_ref4: | |
414ad644 TT |
20563 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20564 | + read_4_bytes (abfd, info_ptr))); | |
c906108c SS |
20565 | info_ptr += 4; |
20566 | break; | |
613e1657 | 20567 | case DW_FORM_ref8: |
414ad644 TT |
20568 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20569 | + read_8_bytes (abfd, info_ptr))); | |
613e1657 KB |
20570 | info_ptr += 8; |
20571 | break; | |
55f1336d | 20572 | case DW_FORM_ref_sig8: |
630ed6b9 | 20573 | attr->set_signature (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
20574 | info_ptr += 8; |
20575 | break; | |
c906108c | 20576 | case DW_FORM_ref_udata: |
414ad644 TT |
20577 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20578 | + read_unsigned_leb128 (abfd, info_ptr, | |
20579 | &bytes_read))); | |
c906108c SS |
20580 | info_ptr += bytes_read; |
20581 | break; | |
c906108c | 20582 | case DW_FORM_indirect: |
a8329558 KW |
20583 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20584 | info_ptr += bytes_read; | |
43988095 JK |
20585 | if (form == DW_FORM_implicit_const) |
20586 | { | |
20587 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
20588 | info_ptr += bytes_read; | |
20589 | } | |
20590 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
7a5f294d | 20591 | info_ptr); |
43988095 JK |
20592 | break; |
20593 | case DW_FORM_implicit_const: | |
1bc397c5 | 20594 | attr->set_signed (implicit_const); |
a8329558 | 20595 | break; |
336d760d | 20596 | case DW_FORM_addrx: |
3019eac3 | 20597 | case DW_FORM_GNU_addr_index: |
fe56917a TT |
20598 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20599 | &bytes_read)); | |
3019eac3 DE |
20600 | info_ptr += bytes_read; |
20601 | break; | |
cf532bd1 | 20602 | case DW_FORM_strx: |
15f18d14 AT |
20603 | case DW_FORM_strx1: |
20604 | case DW_FORM_strx2: | |
20605 | case DW_FORM_strx3: | |
20606 | case DW_FORM_strx4: | |
3019eac3 | 20607 | case DW_FORM_GNU_str_index: |
3019eac3 | 20608 | { |
15f18d14 AT |
20609 | ULONGEST str_index; |
20610 | if (form == DW_FORM_strx1) | |
20611 | { | |
20612 | str_index = read_1_byte (abfd, info_ptr); | |
20613 | info_ptr += 1; | |
20614 | } | |
20615 | else if (form == DW_FORM_strx2) | |
20616 | { | |
20617 | str_index = read_2_bytes (abfd, info_ptr); | |
20618 | info_ptr += 2; | |
20619 | } | |
20620 | else if (form == DW_FORM_strx3) | |
20621 | { | |
20622 | str_index = read_3_bytes (abfd, info_ptr); | |
20623 | info_ptr += 3; | |
20624 | } | |
20625 | else if (form == DW_FORM_strx4) | |
20626 | { | |
20627 | str_index = read_4_bytes (abfd, info_ptr); | |
20628 | info_ptr += 4; | |
20629 | } | |
20630 | else | |
20631 | { | |
20632 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
20633 | info_ptr += bytes_read; | |
20634 | } | |
fe56917a | 20635 | attr->set_unsigned_reprocess (str_index); |
7a5f294d | 20636 | } |
3019eac3 | 20637 | break; |
c906108c | 20638 | default: |
8a3fe4f8 | 20639 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
20640 | dwarf_form_name (form), |
20641 | bfd_get_filename (abfd)); | |
c906108c | 20642 | } |
28e94949 | 20643 | |
36586728 | 20644 | /* Super hack. */ |
cd6c91b4 | 20645 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
20646 | attr->form = DW_FORM_GNU_ref_alt; |
20647 | ||
28e94949 JB |
20648 | /* We have seen instances where the compiler tried to emit a byte |
20649 | size attribute of -1 which ended up being encoded as an unsigned | |
20650 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
20651 | an object of this size seems pretty unlikely so we can relatively | |
20652 | safely treat these cases as if the size attribute was invalid and | |
20653 | treat them as zero by default. */ | |
20654 | if (attr->name == DW_AT_byte_size | |
20655 | && form == DW_FORM_data4 | |
529908cb | 20656 | && attr->as_unsigned () >= 0xffffffff) |
01c66ae6 JB |
20657 | { |
20658 | complaint | |
dda83cd7 SM |
20659 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
20660 | hex_string (attr->as_unsigned ())); | |
414ad644 | 20661 | attr->set_unsigned (0); |
01c66ae6 | 20662 | } |
28e94949 | 20663 | |
c906108c SS |
20664 | return info_ptr; |
20665 | } | |
20666 | ||
a8329558 KW |
20667 | /* Read an attribute described by an abbreviated attribute. */ |
20668 | ||
d521ce57 | 20669 | static const gdb_byte * |
dee91e82 DE |
20670 | read_attribute (const struct die_reader_specs *reader, |
20671 | struct attribute *attr, struct attr_abbrev *abbrev, | |
7a5f294d | 20672 | const gdb_byte *info_ptr) |
a8329558 KW |
20673 | { |
20674 | attr->name = abbrev->name; | |
c6481205 | 20675 | attr->string_is_canonical = 0; |
fe56917a | 20676 | attr->requires_reprocessing = 0; |
43988095 | 20677 | return read_attribute_value (reader, attr, abbrev->form, |
7a5f294d | 20678 | abbrev->implicit_const, info_ptr); |
a8329558 KW |
20679 | } |
20680 | ||
43988095 JK |
20681 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
20682 | ||
20683 | static const char * | |
976ca316 | 20684 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 20685 | LONGEST str_offset) |
43988095 | 20686 | { |
976ca316 SM |
20687 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
20688 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
20689 | } |
20690 | ||
43988095 JK |
20691 | /* Return pointer to string at .debug_str offset as read from BUF. |
20692 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
20693 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
20694 | ||
d521ce57 | 20695 | static const char * |
976ca316 | 20696 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 20697 | const gdb_byte *buf, |
cf2c3c16 TT |
20698 | const struct comp_unit_head *cu_header, |
20699 | unsigned int *bytes_read_ptr) | |
20700 | { | |
8266302d | 20701 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 20702 | |
976ca316 | 20703 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
20704 | } |
20705 | ||
86c0bb4c | 20706 | /* See read.h. */ |
43988095 | 20707 | |
86c0bb4c TT |
20708 | const char * |
20709 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
20710 | const struct comp_unit_head *cu_header, |
20711 | unsigned int *bytes_read_ptr) | |
43988095 | 20712 | { |
86c0bb4c | 20713 | bfd *abfd = objfile->obfd; |
8266302d | 20714 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 20715 | |
5989a64e | 20716 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
20717 | } |
20718 | ||
3019eac3 | 20719 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 20720 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
20721 | ADDR_SIZE is the size of addresses from the CU header. */ |
20722 | ||
20723 | static CORE_ADDR | |
976ca316 SM |
20724 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
20725 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 20726 | { |
976ca316 | 20727 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
20728 | bfd *abfd = objfile->obfd; |
20729 | const gdb_byte *info_ptr; | |
18a8505e | 20730 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 20731 | |
976ca316 SM |
20732 | per_objfile->per_bfd->addr.read (objfile); |
20733 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 20734 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 20735 | objfile_name (objfile)); |
18a8505e | 20736 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 20737 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
20738 | error (_("DW_FORM_addr_index pointing outside of " |
20739 | ".debug_addr section [in module %s]"), | |
4262abfb | 20740 | objfile_name (objfile)); |
976ca316 SM |
20741 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
20742 | + addr_index * addr_size); | |
3019eac3 DE |
20743 | if (addr_size == 4) |
20744 | return bfd_get_32 (abfd, info_ptr); | |
20745 | else | |
20746 | return bfd_get_64 (abfd, info_ptr); | |
20747 | } | |
20748 | ||
20749 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20750 | ||
20751 | static CORE_ADDR | |
20752 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20753 | { | |
5e22e966 | 20754 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 20755 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
20756 | } |
20757 | ||
20758 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20759 | ||
20760 | static CORE_ADDR | |
d521ce57 | 20761 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20762 | unsigned int *bytes_read) |
20763 | { | |
5e22e966 | 20764 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
20765 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20766 | ||
20767 | return read_addr_index (cu, addr_index); | |
20768 | } | |
20769 | ||
450a1bfc | 20770 | /* See read.h. */ |
3019eac3 DE |
20771 | |
20772 | CORE_ADDR | |
82ca3f51 | 20773 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 20774 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 20775 | unsigned int addr_index) |
3019eac3 | 20776 | { |
976ca316 | 20777 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 20778 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20779 | int addr_size; |
20780 | ||
3019eac3 DE |
20781 | /* We need addr_base and addr_size. |
20782 | If we don't have PER_CU->cu, we have to get it. | |
20783 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20784 | which at this point doesn't seem justified: it's not clear how frequently | |
20785 | it would get used and it would increase the size of every PER_CU. | |
20786 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20787 | so we're not in uncharted territory here. | |
20788 | Alas we need to be a bit more complicated as addr_base is contained | |
20789 | in the DIE. | |
20790 | ||
20791 | We don't need to read the entire CU(/TU). | |
20792 | We just need the header and top level die. | |
a1b64ce1 | 20793 | |
3019eac3 | 20794 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20795 | For now we skip this optimization. */ |
3019eac3 DE |
20796 | |
20797 | if (cu != NULL) | |
20798 | { | |
20799 | addr_base = cu->addr_base; | |
20800 | addr_size = cu->header.addr_size; | |
20801 | } | |
20802 | else | |
20803 | { | |
976ca316 | 20804 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
20805 | addr_base = reader.cu->addr_base; |
20806 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20807 | } |
20808 | ||
976ca316 | 20809 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
20810 | } |
20811 | ||
18a8505e AT |
20812 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20813 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20814 | DWO file. */ | |
3019eac3 | 20815 | |
d521ce57 | 20816 | static const char * |
18a8505e AT |
20817 | read_str_index (struct dwarf2_cu *cu, |
20818 | struct dwarf2_section_info *str_section, | |
20819 | struct dwarf2_section_info *str_offsets_section, | |
20820 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20821 | { |
976ca316 SM |
20822 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20823 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 20824 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20825 | bfd *abfd = objfile->obfd; |
d521ce57 | 20826 | const gdb_byte *info_ptr; |
3019eac3 | 20827 | ULONGEST str_offset; |
cf532bd1 | 20828 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20829 | |
96b79293 TT |
20830 | str_section->read (objfile); |
20831 | str_offsets_section->read (objfile); | |
73869dc2 | 20832 | if (str_section->buffer == NULL) |
18a8505e | 20833 | error (_("%s used without %s section" |
9d8780f0 | 20834 | " in CU at offset %s [in module %s]"), |
96b79293 | 20835 | form_name, str_section->get_name (), |
dda83cd7 | 20836 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20837 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20838 | error (_("%s used without %s section" |
9d8780f0 | 20839 | " in CU at offset %s [in module %s]"), |
96b79293 | 20840 | form_name, str_section->get_name (), |
dda83cd7 | 20841 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20842 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20843 | + str_offsets_base |
3019eac3 DE |
20844 | + str_index * cu->header.offset_size); |
20845 | if (cu->header.offset_size == 4) | |
20846 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20847 | else | |
20848 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20849 | if (str_offset >= str_section->size) |
57d63ce2 | 20850 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20851 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20852 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20853 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20854 | } |
20855 | ||
18a8505e AT |
20856 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20857 | ||
20858 | static const char * | |
20859 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20860 | { | |
20861 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20862 | ? reader->cu->header.addr_size : 0; | |
20863 | return read_str_index (reader->cu, | |
20864 | &reader->dwo_file->sections.str, | |
20865 | &reader->dwo_file->sections.str_offsets, | |
20866 | str_offsets_base, str_index); | |
20867 | } | |
20868 | ||
20869 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20870 | ||
20871 | static const char * | |
20872 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20873 | { | |
5e22e966 | 20874 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
20875 | const char *objf_name = objfile_name (objfile); |
20876 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20877 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20878 | ||
20879 | if (!cu->str_offsets_base.has_value ()) | |
20880 | error (_("%s used in Fission stub without %s" | |
20881 | " in CU at offset 0x%lx [in module %s]"), | |
20882 | form_name, str_offsets_attr_name, | |
20883 | (long) cu->header.offset_size, objf_name); | |
20884 | ||
20885 | return read_str_index (cu, | |
5e22e966 SM |
20886 | &cu->per_objfile->per_bfd->str, |
20887 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
20888 | *cu->str_offsets_base, str_index); |
20889 | } | |
20890 | ||
3019eac3 DE |
20891 | /* Return the length of an LEB128 number in BUF. */ |
20892 | ||
20893 | static int | |
20894 | leb128_size (const gdb_byte *buf) | |
20895 | { | |
20896 | const gdb_byte *begin = buf; | |
20897 | gdb_byte byte; | |
20898 | ||
20899 | while (1) | |
20900 | { | |
20901 | byte = *buf++; | |
20902 | if ((byte & 128) == 0) | |
20903 | return buf - begin; | |
20904 | } | |
20905 | } | |
20906 | ||
c906108c | 20907 | static void |
e142c38c | 20908 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20909 | { |
20910 | switch (lang) | |
20911 | { | |
20912 | case DW_LANG_C89: | |
76bee0cc | 20913 | case DW_LANG_C99: |
0cfd832f | 20914 | case DW_LANG_C11: |
c906108c | 20915 | case DW_LANG_C: |
d1be3247 | 20916 | case DW_LANG_UPC: |
e142c38c | 20917 | cu->language = language_c; |
c906108c | 20918 | break; |
9c37b5ae | 20919 | case DW_LANG_Java: |
c906108c | 20920 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20921 | case DW_LANG_C_plus_plus_11: |
20922 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20923 | cu->language = language_cplus; |
c906108c | 20924 | break; |
6aecb9c2 JB |
20925 | case DW_LANG_D: |
20926 | cu->language = language_d; | |
20927 | break; | |
c906108c SS |
20928 | case DW_LANG_Fortran77: |
20929 | case DW_LANG_Fortran90: | |
b21b22e0 | 20930 | case DW_LANG_Fortran95: |
f7de9aab MW |
20931 | case DW_LANG_Fortran03: |
20932 | case DW_LANG_Fortran08: | |
e142c38c | 20933 | cu->language = language_fortran; |
c906108c | 20934 | break; |
a766d390 DE |
20935 | case DW_LANG_Go: |
20936 | cu->language = language_go; | |
20937 | break; | |
c906108c | 20938 | case DW_LANG_Mips_Assembler: |
e142c38c | 20939 | cu->language = language_asm; |
c906108c SS |
20940 | break; |
20941 | case DW_LANG_Ada83: | |
8aaf0b47 | 20942 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20943 | cu->language = language_ada; |
20944 | break; | |
72019c9c GM |
20945 | case DW_LANG_Modula2: |
20946 | cu->language = language_m2; | |
20947 | break; | |
fe8e67fd PM |
20948 | case DW_LANG_Pascal83: |
20949 | cu->language = language_pascal; | |
20950 | break; | |
22566fbd DJ |
20951 | case DW_LANG_ObjC: |
20952 | cu->language = language_objc; | |
20953 | break; | |
c44af4eb TT |
20954 | case DW_LANG_Rust: |
20955 | case DW_LANG_Rust_old: | |
20956 | cu->language = language_rust; | |
20957 | break; | |
c906108c SS |
20958 | case DW_LANG_Cobol74: |
20959 | case DW_LANG_Cobol85: | |
c906108c | 20960 | default: |
e142c38c | 20961 | cu->language = language_minimal; |
c906108c SS |
20962 | break; |
20963 | } | |
e142c38c | 20964 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20965 | } |
20966 | ||
20967 | /* Return the named attribute or NULL if not there. */ | |
20968 | ||
20969 | static struct attribute * | |
e142c38c | 20970 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20971 | { |
a48e046c | 20972 | for (;;) |
c906108c | 20973 | { |
a48e046c TT |
20974 | unsigned int i; |
20975 | struct attribute *spec = NULL; | |
20976 | ||
20977 | for (i = 0; i < die->num_attrs; ++i) | |
20978 | { | |
20979 | if (die->attrs[i].name == name) | |
20980 | return &die->attrs[i]; | |
20981 | if (die->attrs[i].name == DW_AT_specification | |
20982 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20983 | spec = &die->attrs[i]; | |
20984 | } | |
20985 | ||
20986 | if (!spec) | |
20987 | break; | |
c906108c | 20988 | |
f2f0e013 | 20989 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20990 | } |
c5aa993b | 20991 | |
c906108c SS |
20992 | return NULL; |
20993 | } | |
20994 | ||
7d45c7c3 KB |
20995 | /* Return the string associated with a string-typed attribute, or NULL if it |
20996 | is either not found or is of an incorrect type. */ | |
20997 | ||
20998 | static const char * | |
20999 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
21000 | { | |
21001 | struct attribute *attr; | |
21002 | const char *str = NULL; | |
21003 | ||
21004 | attr = dwarf2_attr (die, name, cu); | |
21005 | ||
21006 | if (attr != NULL) | |
21007 | { | |
95f982e5 | 21008 | str = attr->as_string (); |
e61108c9 | 21009 | if (str == nullptr) |
dda83cd7 | 21010 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
21011 | "DIE at %s in module %s"), |
21012 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 21013 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
21014 | } |
21015 | ||
21016 | return str; | |
21017 | } | |
21018 | ||
a084a2a6 | 21019 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 21020 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
21021 | static const char * |
21022 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
21023 | { | |
21024 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
21025 | if (dwo_name == nullptr) | |
21026 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
21027 | return dwo_name; | |
21028 | } | |
21029 | ||
05cf31d1 JB |
21030 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
21031 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 21032 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
21033 | |
21034 | static int | |
21035 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
21036 | { | |
21037 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
21038 | ||
c45bc3f8 | 21039 | return attr != nullptr && attr->as_boolean (); |
05cf31d1 JB |
21040 | } |
21041 | ||
3ca72b44 | 21042 | static int |
e142c38c | 21043 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 21044 | { |
05cf31d1 JB |
21045 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
21046 | which value is non-zero. However, we have to be careful with | |
21047 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
21048 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
21049 | end up accidently finding a declaration attribute that belongs | |
21050 | to a different DIE referenced by the specification attribute, | |
21051 | even though the given DIE does not have a declaration attribute. */ | |
21052 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
21053 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
21054 | } |
21055 | ||
63d06c5c | 21056 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 21057 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
21058 | containing the return value on output. If there is no |
21059 | specification, but there is an abstract origin, that is | |
21060 | returned. */ | |
63d06c5c DC |
21061 | |
21062 | static struct die_info * | |
f2f0e013 | 21063 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 21064 | { |
f2f0e013 DJ |
21065 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
21066 | *spec_cu); | |
63d06c5c | 21067 | |
edb3359d DJ |
21068 | if (spec_attr == NULL) |
21069 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
21070 | ||
63d06c5c DC |
21071 | if (spec_attr == NULL) |
21072 | return NULL; | |
21073 | else | |
f2f0e013 | 21074 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 21075 | } |
c906108c | 21076 | |
527f3840 JK |
21077 | /* Stub for free_line_header to match void * callback types. */ |
21078 | ||
21079 | static void | |
21080 | free_line_header_voidp (void *arg) | |
21081 | { | |
9a3c8263 | 21082 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 21083 | |
fff8551c | 21084 | delete lh; |
527f3840 JK |
21085 | } |
21086 | ||
83769d0b | 21087 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
21088 | |
21089 | static struct dwarf2_section_info * | |
21090 | get_debug_line_section (struct dwarf2_cu *cu) | |
21091 | { | |
21092 | struct dwarf2_section_info *section; | |
976ca316 | 21093 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
21094 | |
21095 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
21096 | DWO file. */ | |
21097 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
21098 | section = &cu->dwo_unit->dwo_file->sections.line; | |
21099 | else if (cu->per_cu->is_dwz) | |
21100 | { | |
976ca316 | 21101 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
36586728 TT |
21102 | |
21103 | section = &dwz->line; | |
21104 | } | |
21105 | else | |
976ca316 | 21106 | section = &per_objfile->per_bfd->line; |
36586728 TT |
21107 | |
21108 | return section; | |
21109 | } | |
21110 | ||
debd256d | 21111 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 21112 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 21113 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
21114 | Returns NULL if there is a problem reading the header, e.g., if it |
21115 | has a version we don't understand. | |
debd256d JB |
21116 | |
21117 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
21118 | the returned object point into the dwarf line section buffer, |
21119 | and must not be freed. */ | |
ae2de4f8 | 21120 | |
fff8551c | 21121 | static line_header_up |
9c541725 | 21122 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 21123 | { |
3019eac3 | 21124 | struct dwarf2_section_info *section; |
976ca316 | 21125 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 21126 | |
36586728 | 21127 | section = get_debug_line_section (cu); |
976ca316 | 21128 | section->read (per_objfile->objfile); |
3019eac3 | 21129 | if (section->buffer == NULL) |
debd256d | 21130 | { |
3019eac3 | 21131 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 21132 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 21133 | else |
b98664d3 | 21134 | complaint (_("missing .debug_line section")); |
debd256d JB |
21135 | return 0; |
21136 | } | |
21137 | ||
0df7ad3a | 21138 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 21139 | per_objfile, section, &cu->header); |
debd256d | 21140 | } |
c906108c | 21141 | |
c6da4cef | 21142 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 21143 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 21144 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
21145 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
21146 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 21147 | |
d521ce57 | 21148 | static const char * |
7ba99d21 | 21149 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 21150 | const dwarf2_psymtab *pst, |
c89b44cd TT |
21151 | const char *comp_dir, |
21152 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 21153 | { |
d521ce57 TT |
21154 | const char *include_name = fe.name; |
21155 | const char *include_name_to_compare = include_name; | |
72b9f47f | 21156 | const char *pst_filename; |
c6da4cef DE |
21157 | int file_is_pst; |
21158 | ||
8c43009f | 21159 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 21160 | |
c89b44cd | 21161 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
21162 | if (!IS_ABSOLUTE_PATH (include_name) |
21163 | && (dir_name != NULL || comp_dir != NULL)) | |
21164 | { | |
21165 | /* Avoid creating a duplicate psymtab for PST. | |
21166 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
21167 | Before we do the comparison, however, we need to account | |
21168 | for DIR_NAME and COMP_DIR. | |
21169 | First prepend dir_name (if non-NULL). If we still don't | |
21170 | have an absolute path prepend comp_dir (if non-NULL). | |
21171 | However, the directory we record in the include-file's | |
21172 | psymtab does not contain COMP_DIR (to match the | |
21173 | corresponding symtab(s)). | |
21174 | ||
21175 | Example: | |
21176 | ||
21177 | bash$ cd /tmp | |
21178 | bash$ gcc -g ./hello.c | |
21179 | include_name = "hello.c" | |
21180 | dir_name = "." | |
21181 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
21182 | DW_AT_name = "./hello.c" |
21183 | ||
21184 | */ | |
c6da4cef DE |
21185 | |
21186 | if (dir_name != NULL) | |
21187 | { | |
c89b44cd TT |
21188 | name_holder->reset (concat (dir_name, SLASH_STRING, |
21189 | include_name, (char *) NULL)); | |
21190 | include_name = name_holder->get (); | |
c6da4cef | 21191 | include_name_to_compare = include_name; |
c6da4cef DE |
21192 | } |
21193 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
21194 | { | |
c89b44cd TT |
21195 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
21196 | include_name, (char *) NULL)); | |
21197 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
21198 | } |
21199 | } | |
21200 | ||
21201 | pst_filename = pst->filename; | |
c89b44cd | 21202 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
21203 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
21204 | { | |
c89b44cd TT |
21205 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
21206 | pst_filename, (char *) NULL)); | |
21207 | pst_filename = copied_name.get (); | |
c6da4cef DE |
21208 | } |
21209 | ||
1e3fad37 | 21210 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 21211 | |
c6da4cef DE |
21212 | if (file_is_pst) |
21213 | return NULL; | |
21214 | return include_name; | |
21215 | } | |
21216 | ||
d9b3de22 DE |
21217 | /* State machine to track the state of the line number program. */ |
21218 | ||
6f77053d | 21219 | class lnp_state_machine |
d9b3de22 | 21220 | { |
6f77053d PA |
21221 | public: |
21222 | /* Initialize a machine state for the start of a line number | |
21223 | program. */ | |
804d2729 TT |
21224 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
21225 | bool record_lines_p); | |
6f77053d | 21226 | |
8c43009f PA |
21227 | file_entry *current_file () |
21228 | { | |
21229 | /* lh->file_names is 0-based, but the file name numbers in the | |
21230 | statement program are 1-based. */ | |
6f77053d PA |
21231 | return m_line_header->file_name_at (m_file); |
21232 | } | |
21233 | ||
21234 | /* Record the line in the state machine. END_SEQUENCE is true if | |
21235 | we're processing the end of a sequence. */ | |
21236 | void record_line (bool end_sequence); | |
21237 | ||
a8caed5d | 21238 | /* Check ADDRESS is -1, or zero and less than UNRELOCATED_LOWPC, and if true |
7ab6656f | 21239 | nop-out rest of the lines in this sequence. */ |
6f77053d PA |
21240 | void check_line_address (struct dwarf2_cu *cu, |
21241 | const gdb_byte *line_ptr, | |
7ab6656f | 21242 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
21243 | |
21244 | void handle_set_discriminator (unsigned int discriminator) | |
21245 | { | |
21246 | m_discriminator = discriminator; | |
21247 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
21248 | } | |
21249 | ||
21250 | /* Handle DW_LNE_set_address. */ | |
21251 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
21252 | { | |
21253 | m_op_index = 0; | |
21254 | address += baseaddr; | |
21255 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
21256 | } | |
21257 | ||
21258 | /* Handle DW_LNS_advance_pc. */ | |
21259 | void handle_advance_pc (CORE_ADDR adjust); | |
21260 | ||
21261 | /* Handle a special opcode. */ | |
21262 | void handle_special_opcode (unsigned char op_code); | |
21263 | ||
21264 | /* Handle DW_LNS_advance_line. */ | |
21265 | void handle_advance_line (int line_delta) | |
21266 | { | |
21267 | advance_line (line_delta); | |
21268 | } | |
21269 | ||
21270 | /* Handle DW_LNS_set_file. */ | |
21271 | void handle_set_file (file_name_index file); | |
21272 | ||
21273 | /* Handle DW_LNS_negate_stmt. */ | |
21274 | void handle_negate_stmt () | |
21275 | { | |
21276 | m_is_stmt = !m_is_stmt; | |
21277 | } | |
21278 | ||
21279 | /* Handle DW_LNS_const_add_pc. */ | |
21280 | void handle_const_add_pc (); | |
21281 | ||
21282 | /* Handle DW_LNS_fixed_advance_pc. */ | |
21283 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
21284 | { | |
21285 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21286 | m_op_index = 0; | |
21287 | } | |
21288 | ||
21289 | /* Handle DW_LNS_copy. */ | |
21290 | void handle_copy () | |
21291 | { | |
21292 | record_line (false); | |
21293 | m_discriminator = 0; | |
21294 | } | |
21295 | ||
21296 | /* Handle DW_LNE_end_sequence. */ | |
21297 | void handle_end_sequence () | |
21298 | { | |
804d2729 | 21299 | m_currently_recording_lines = true; |
6f77053d PA |
21300 | } |
21301 | ||
21302 | private: | |
21303 | /* Advance the line by LINE_DELTA. */ | |
21304 | void advance_line (int line_delta) | |
21305 | { | |
21306 | m_line += line_delta; | |
21307 | ||
21308 | if (line_delta != 0) | |
21309 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
21310 | } |
21311 | ||
804d2729 TT |
21312 | struct dwarf2_cu *m_cu; |
21313 | ||
6f77053d PA |
21314 | gdbarch *m_gdbarch; |
21315 | ||
21316 | /* True if we're recording lines. | |
21317 | Otherwise we're building partial symtabs and are just interested in | |
21318 | finding include files mentioned by the line number program. */ | |
21319 | bool m_record_lines_p; | |
21320 | ||
8c43009f | 21321 | /* The line number header. */ |
6f77053d | 21322 | line_header *m_line_header; |
8c43009f | 21323 | |
6f77053d PA |
21324 | /* These are part of the standard DWARF line number state machine, |
21325 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 21326 | |
6f77053d | 21327 | unsigned char m_op_index = 0; |
7ba99d21 AT |
21328 | /* The line table index of the current file. */ |
21329 | file_name_index m_file = 1; | |
6f77053d PA |
21330 | unsigned int m_line = 1; |
21331 | ||
21332 | /* These are initialized in the constructor. */ | |
21333 | ||
21334 | CORE_ADDR m_address; | |
21335 | bool m_is_stmt; | |
21336 | unsigned int m_discriminator; | |
d9b3de22 DE |
21337 | |
21338 | /* Additional bits of state we need to track. */ | |
21339 | ||
21340 | /* The last file that we called dwarf2_start_subfile for. | |
21341 | This is only used for TLLs. */ | |
6f77053d | 21342 | unsigned int m_last_file = 0; |
d9b3de22 | 21343 | /* The last file a line number was recorded for. */ |
6f77053d | 21344 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 21345 | |
1313c56e AB |
21346 | /* The address of the last line entry. */ |
21347 | CORE_ADDR m_last_address; | |
21348 | ||
21349 | /* Set to true when a previous line at the same address (using | |
21350 | m_last_address) had m_is_stmt true. This is reset to false when a | |
21351 | line entry at a new address (m_address different to m_last_address) is | |
21352 | processed. */ | |
21353 | bool m_stmt_at_address = false; | |
21354 | ||
804d2729 TT |
21355 | /* When true, record the lines we decode. */ |
21356 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
21357 | |
21358 | /* The last line number that was recorded, used to coalesce | |
21359 | consecutive entries for the same line. This can happen, for | |
21360 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
21361 | unsigned int m_last_line = 0; |
21362 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 21363 | }; |
d9b3de22 | 21364 | |
6f77053d PA |
21365 | void |
21366 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
21367 | { | |
21368 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
21369 | / m_line_header->maximum_ops_per_instruction) | |
21370 | * m_line_header->minimum_instruction_length); | |
21371 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21372 | m_op_index = ((m_op_index + adjust) | |
21373 | % m_line_header->maximum_ops_per_instruction); | |
21374 | } | |
d9b3de22 | 21375 | |
6f77053d PA |
21376 | void |
21377 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 21378 | { |
6f77053d | 21379 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
21380 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
21381 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
21382 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
21383 | / m_line_header->maximum_ops_per_instruction) |
21384 | * m_line_header->minimum_instruction_length); | |
21385 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 21386 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 21387 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 21388 | |
258bf0ee | 21389 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
21390 | advance_line (line_delta); |
21391 | record_line (false); | |
21392 | m_discriminator = 0; | |
21393 | } | |
d9b3de22 | 21394 | |
6f77053d PA |
21395 | void |
21396 | lnp_state_machine::handle_set_file (file_name_index file) | |
21397 | { | |
21398 | m_file = file; | |
21399 | ||
21400 | const file_entry *fe = current_file (); | |
21401 | if (fe == NULL) | |
21402 | dwarf2_debug_line_missing_file_complaint (); | |
21403 | else if (m_record_lines_p) | |
21404 | { | |
21405 | const char *dir = fe->include_dir (m_line_header); | |
21406 | ||
c24bdb02 | 21407 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21408 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 21409 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
21410 | } |
21411 | } | |
21412 | ||
21413 | void | |
21414 | lnp_state_machine::handle_const_add_pc () | |
21415 | { | |
21416 | CORE_ADDR adjust | |
21417 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21418 | ||
21419 | CORE_ADDR addr_adj | |
21420 | = (((m_op_index + adjust) | |
21421 | / m_line_header->maximum_ops_per_instruction) | |
21422 | * m_line_header->minimum_instruction_length); | |
21423 | ||
21424 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21425 | m_op_index = ((m_op_index + adjust) | |
21426 | % m_line_header->maximum_ops_per_instruction); | |
21427 | } | |
d9b3de22 | 21428 | |
a05a36a5 DE |
21429 | /* Return non-zero if we should add LINE to the line number table. |
21430 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21431 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21432 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21433 | had a non-zero discriminator. | |
21434 | ||
21435 | We have to be careful in the presence of discriminators. | |
21436 | E.g., for this line: | |
21437 | ||
21438 | for (i = 0; i < 100000; i++); | |
21439 | ||
21440 | clang can emit four line number entries for that one line, | |
21441 | each with a different discriminator. | |
21442 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21443 | ||
21444 | However, we want gdb to coalesce all four entries into one. | |
21445 | Otherwise the user could stepi into the middle of the line and | |
21446 | gdb would get confused about whether the pc really was in the | |
21447 | middle of the line. | |
21448 | ||
21449 | Things are further complicated by the fact that two consecutive | |
21450 | line number entries for the same line is a heuristic used by gcc | |
21451 | to denote the end of the prologue. So we can't just discard duplicate | |
21452 | entries, we have to be selective about it. The heuristic we use is | |
21453 | that we only collapse consecutive entries for the same line if at least | |
21454 | one of those entries has a non-zero discriminator. PR 17276. | |
21455 | ||
21456 | Note: Addresses in the line number state machine can never go backwards | |
21457 | within one sequence, thus this coalescing is ok. */ | |
21458 | ||
21459 | static int | |
804d2729 TT |
21460 | dwarf_record_line_p (struct dwarf2_cu *cu, |
21461 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
21462 | int line_has_non_zero_discriminator, |
21463 | struct subfile *last_subfile) | |
21464 | { | |
c24bdb02 | 21465 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
21466 | return 1; |
21467 | if (line != last_line) | |
21468 | return 1; | |
21469 | /* Same line for the same file that we've seen already. | |
21470 | As a last check, for pr 17276, only record the line if the line | |
21471 | has never had a non-zero discriminator. */ | |
21472 | if (!line_has_non_zero_discriminator) | |
21473 | return 1; | |
21474 | return 0; | |
21475 | } | |
21476 | ||
804d2729 TT |
21477 | /* Use the CU's builder to record line number LINE beginning at |
21478 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
21479 | |
21480 | static void | |
d9b3de22 | 21481 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 21482 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 21483 | struct dwarf2_cu *cu) |
252a6764 DE |
21484 | { |
21485 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21486 | ||
27e0867f DE |
21487 | if (dwarf_line_debug) |
21488 | { | |
21489 | fprintf_unfiltered (gdb_stdlog, | |
21490 | "Recording line %u, file %s, address %s\n", | |
21491 | line, lbasename (subfile->name), | |
21492 | paddress (gdbarch, address)); | |
21493 | } | |
21494 | ||
804d2729 | 21495 | if (cu != nullptr) |
8c95582d | 21496 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
21497 | } |
21498 | ||
21499 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21500 | Mark the end of a set of line number records. | |
d9b3de22 | 21501 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21502 | If SUBFILE is NULL the request is ignored. */ |
21503 | ||
21504 | static void | |
21505 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 21506 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 21507 | { |
27e0867f DE |
21508 | if (subfile == NULL) |
21509 | return; | |
21510 | ||
21511 | if (dwarf_line_debug) | |
21512 | { | |
21513 | fprintf_unfiltered (gdb_stdlog, | |
21514 | "Finishing current line, file %s, address %s\n", | |
21515 | lbasename (subfile->name), | |
21516 | paddress (gdbarch, address)); | |
21517 | } | |
21518 | ||
8c95582d | 21519 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
21520 | } |
21521 | ||
6f77053d PA |
21522 | void |
21523 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21524 | { |
d9b3de22 DE |
21525 | if (dwarf_line_debug) |
21526 | { | |
21527 | fprintf_unfiltered (gdb_stdlog, | |
21528 | "Processing actual line %u: file %u," | |
94a72be7 | 21529 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 21530 | m_line, m_file, |
6f77053d | 21531 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
21532 | m_is_stmt, m_discriminator, |
21533 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
21534 | } |
21535 | ||
6f77053d | 21536 | file_entry *fe = current_file (); |
8c43009f PA |
21537 | |
21538 | if (fe == NULL) | |
d9b3de22 DE |
21539 | dwarf2_debug_line_missing_file_complaint (); |
21540 | /* For now we ignore lines not starting on an instruction boundary. | |
21541 | But not when processing end_sequence for compatibility with the | |
21542 | previous version of the code. */ | |
6f77053d | 21543 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21544 | { |
8c43009f | 21545 | fe->included_p = 1; |
8c95582d | 21546 | if (m_record_lines_p) |
d9b3de22 | 21547 | { |
1313c56e AB |
21548 | /* When we switch files we insert an end maker in the first file, |
21549 | switch to the second file and add a new line entry. The | |
21550 | problem is that the end marker inserted in the first file will | |
21551 | discard any previous line entries at the same address. If the | |
21552 | line entries in the first file are marked as is-stmt, while | |
21553 | the new line in the second file is non-stmt, then this means | |
21554 | the end marker will discard is-stmt lines so we can have a | |
21555 | non-stmt line. This means that there are less addresses at | |
21556 | which the user can insert a breakpoint. | |
21557 | ||
21558 | To improve this we track the last address in m_last_address, | |
21559 | and whether we have seen an is-stmt at this address. Then | |
21560 | when switching files, if we have seen a stmt at the current | |
21561 | address, and we are switching to create a non-stmt line, then | |
21562 | discard the new line. */ | |
21563 | bool file_changed | |
21564 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
21565 | bool ignore_this_line | |
dda83cd7 SM |
21566 | = ((file_changed && !end_sequence && m_last_address == m_address |
21567 | && !m_is_stmt && m_stmt_at_address) | |
21568 | || (!end_sequence && m_line == 0)); | |
1313c56e AB |
21569 | |
21570 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 21571 | { |
804d2729 TT |
21572 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21573 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21574 | } |
21575 | ||
1313c56e | 21576 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 21577 | { |
8c95582d AB |
21578 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
21579 | ||
804d2729 | 21580 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21581 | m_line_has_non_zero_discriminator, |
21582 | m_last_subfile)) | |
d9b3de22 | 21583 | { |
c24bdb02 | 21584 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21585 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21586 | builder->get_current_subfile (), |
8c95582d | 21587 | m_line, m_address, is_stmt, |
804d2729 | 21588 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21589 | } |
c24bdb02 | 21590 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21591 | m_last_line = m_line; |
d9b3de22 DE |
21592 | } |
21593 | } | |
21594 | } | |
1313c56e AB |
21595 | |
21596 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
21597 | have multiple line table entries all at m_address. */ | |
21598 | if (m_last_address != m_address) | |
21599 | { | |
21600 | m_stmt_at_address = false; | |
21601 | m_last_address = m_address; | |
21602 | } | |
21603 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
21604 | } |
21605 | ||
804d2729 TT |
21606 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21607 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21608 | { |
804d2729 | 21609 | m_cu = cu; |
6f77053d PA |
21610 | m_gdbarch = arch; |
21611 | m_record_lines_p = record_lines_p; | |
21612 | m_line_header = lh; | |
d9b3de22 | 21613 | |
804d2729 | 21614 | m_currently_recording_lines = true; |
d9b3de22 | 21615 | |
d9b3de22 DE |
21616 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21617 | was a line entry for it so that the backend has a chance to adjust it | |
21618 | and also record it in case it needs it. This is currently used by MIPS | |
21619 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21620 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21621 | m_is_stmt = lh->default_is_stmt; | |
21622 | m_discriminator = 0; | |
1313c56e AB |
21623 | |
21624 | m_last_address = m_address; | |
21625 | m_stmt_at_address = false; | |
252a6764 DE |
21626 | } |
21627 | ||
6f77053d PA |
21628 | void |
21629 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21630 | const gdb_byte *line_ptr, | |
7ab6656f | 21631 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21632 | { |
a8caed5d FS |
21633 | /* Linkers resolve a symbolic relocation referencing a GC'd function to 0 or |
21634 | -1. If ADDRESS is 0, ignoring the opcode will err if the text section is | |
21635 | located at 0x0. In this case, additionally check that if | |
21636 | ADDRESS < UNRELOCATED_LOWPC. */ | |
924c2928 | 21637 | |
a8caed5d FS |
21638 | if ((address == 0 && address < unrelocated_lowpc) |
21639 | || address == (CORE_ADDR) -1) | |
924c2928 DE |
21640 | { |
21641 | /* This line table is for a function which has been | |
21642 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21643 | ||
5e22e966 | 21644 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
21645 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21646 | ||
b98664d3 | 21647 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21648 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21649 | m_currently_recording_lines = false; |
21650 | /* Note: m_currently_recording_lines is left as false until we see | |
21651 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21652 | } |
21653 | } | |
21654 | ||
f3f5162e | 21655 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21656 | Process the line number information in LH. |
21657 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21658 | program in order to set included_p for every referenced header. */ | |
debd256d | 21659 | |
c906108c | 21660 | static void |
43f3e411 DE |
21661 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21662 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21663 | { |
d521ce57 TT |
21664 | const gdb_byte *line_ptr, *extended_end; |
21665 | const gdb_byte *line_end; | |
a8c50c1f | 21666 | unsigned int bytes_read, extended_len; |
699ca60a | 21667 | unsigned char op_code, extended_op; |
e142c38c | 21668 | CORE_ADDR baseaddr; |
5e22e966 | 21669 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21670 | bfd *abfd = objfile->obfd; |
08feed99 | 21671 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
21672 | /* True if we're recording line info (as opposed to building partial |
21673 | symtabs and just interested in finding include files mentioned by | |
21674 | the line number program). */ | |
21675 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 21676 | |
b3b3bada | 21677 | baseaddr = objfile->text_section_offset (); |
c906108c | 21678 | |
debd256d JB |
21679 | line_ptr = lh->statement_program_start; |
21680 | line_end = lh->statement_program_end; | |
c906108c SS |
21681 | |
21682 | /* Read the statement sequences until there's nothing left. */ | |
21683 | while (line_ptr < line_end) | |
21684 | { | |
6f77053d PA |
21685 | /* The DWARF line number program state machine. Reset the state |
21686 | machine at the start of each sequence. */ | |
804d2729 | 21687 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21688 | bool end_sequence = false; |
d9b3de22 | 21689 | |
8c43009f | 21690 | if (record_lines_p) |
c906108c | 21691 | { |
8c43009f PA |
21692 | /* Start a subfile for the current file of the state |
21693 | machine. */ | |
21694 | const file_entry *fe = state_machine.current_file (); | |
21695 | ||
21696 | if (fe != NULL) | |
804d2729 | 21697 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21698 | } |
21699 | ||
a738430d | 21700 | /* Decode the table. */ |
d9b3de22 | 21701 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21702 | { |
21703 | op_code = read_1_byte (abfd, line_ptr); | |
21704 | line_ptr += 1; | |
9aa1fe7e | 21705 | |
debd256d | 21706 | if (op_code >= lh->opcode_base) |
6e70227d | 21707 | { |
8e07a239 | 21708 | /* Special opcode. */ |
6f77053d | 21709 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21710 | } |
21711 | else switch (op_code) | |
c906108c SS |
21712 | { |
21713 | case DW_LNS_extended_op: | |
3e43a32a MS |
21714 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21715 | &bytes_read); | |
473b7be6 | 21716 | line_ptr += bytes_read; |
a8c50c1f | 21717 | extended_end = line_ptr + extended_len; |
c906108c SS |
21718 | extended_op = read_1_byte (abfd, line_ptr); |
21719 | line_ptr += 1; | |
8f34b746 TV |
21720 | if (DW_LNE_lo_user <= extended_op |
21721 | && extended_op <= DW_LNE_hi_user) | |
21722 | { | |
21723 | /* Vendor extension, ignore. */ | |
21724 | line_ptr = extended_end; | |
21725 | break; | |
21726 | } | |
c906108c SS |
21727 | switch (extended_op) |
21728 | { | |
21729 | case DW_LNE_end_sequence: | |
6f77053d PA |
21730 | state_machine.handle_end_sequence (); |
21731 | end_sequence = true; | |
c906108c SS |
21732 | break; |
21733 | case DW_LNE_set_address: | |
d9b3de22 DE |
21734 | { |
21735 | CORE_ADDR address | |
c8a7a66f | 21736 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 21737 | line_ptr += bytes_read; |
6f77053d PA |
21738 | |
21739 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21740 | lowpc - baseaddr, address); |
6f77053d | 21741 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21742 | } |
c906108c SS |
21743 | break; |
21744 | case DW_LNE_define_file: | |
dda83cd7 SM |
21745 | { |
21746 | const char *cur_file; | |
ecfb656c PA |
21747 | unsigned int mod_time, length; |
21748 | dir_index dindex; | |
6e70227d | 21749 | |
dda83cd7 | 21750 | cur_file = read_direct_string (abfd, line_ptr, |
3e43a32a | 21751 | &bytes_read); |
dda83cd7 SM |
21752 | line_ptr += bytes_read; |
21753 | dindex = (dir_index) | |
21754 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21755 | line_ptr += bytes_read; | |
21756 | mod_time = | |
21757 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21758 | line_ptr += bytes_read; | |
21759 | length = | |
21760 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21761 | line_ptr += bytes_read; | |
21762 | lh->add_file_name (cur_file, dindex, mod_time, length); | |
21763 | } | |
c906108c | 21764 | break; |
d0c6ba3d | 21765 | case DW_LNE_set_discriminator: |
6f77053d PA |
21766 | { |
21767 | /* The discriminator is not interesting to the | |
21768 | debugger; just ignore it. We still need to | |
21769 | check its value though: | |
21770 | if there are consecutive entries for the same | |
21771 | (non-prologue) line we want to coalesce them. | |
21772 | PR 17276. */ | |
21773 | unsigned int discr | |
21774 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21775 | line_ptr += bytes_read; | |
21776 | ||
21777 | state_machine.handle_set_discriminator (discr); | |
21778 | } | |
d0c6ba3d | 21779 | break; |
c906108c | 21780 | default: |
b98664d3 | 21781 | complaint (_("mangled .debug_line section")); |
debd256d | 21782 | return; |
c906108c | 21783 | } |
a8c50c1f DJ |
21784 | /* Make sure that we parsed the extended op correctly. If e.g. |
21785 | we expected a different address size than the producer used, | |
21786 | we may have read the wrong number of bytes. */ | |
21787 | if (line_ptr != extended_end) | |
21788 | { | |
b98664d3 | 21789 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21790 | return; |
21791 | } | |
c906108c SS |
21792 | break; |
21793 | case DW_LNS_copy: | |
6f77053d | 21794 | state_machine.handle_copy (); |
c906108c SS |
21795 | break; |
21796 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21797 | { |
21798 | CORE_ADDR adjust | |
21799 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21800 | line_ptr += bytes_read; |
6f77053d PA |
21801 | |
21802 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21803 | } |
c906108c SS |
21804 | break; |
21805 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21806 | { |
21807 | int line_delta | |
21808 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21809 | line_ptr += bytes_read; |
6f77053d PA |
21810 | |
21811 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21812 | } |
c906108c SS |
21813 | break; |
21814 | case DW_LNS_set_file: | |
d9b3de22 | 21815 | { |
6f77053d | 21816 | file_name_index file |
ecfb656c PA |
21817 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21818 | &bytes_read); | |
d9b3de22 | 21819 | line_ptr += bytes_read; |
8c43009f | 21820 | |
6f77053d | 21821 | state_machine.handle_set_file (file); |
d9b3de22 | 21822 | } |
c906108c SS |
21823 | break; |
21824 | case DW_LNS_set_column: | |
0ad93d4f | 21825 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21826 | line_ptr += bytes_read; |
21827 | break; | |
21828 | case DW_LNS_negate_stmt: | |
6f77053d | 21829 | state_machine.handle_negate_stmt (); |
c906108c SS |
21830 | break; |
21831 | case DW_LNS_set_basic_block: | |
c906108c | 21832 | break; |
c2c6d25f JM |
21833 | /* Add to the address register of the state machine the |
21834 | address increment value corresponding to special opcode | |
a738430d MK |
21835 | 255. I.e., this value is scaled by the minimum |
21836 | instruction length since special opcode 255 would have | |
b021a221 | 21837 | scaled the increment. */ |
c906108c | 21838 | case DW_LNS_const_add_pc: |
6f77053d | 21839 | state_machine.handle_const_add_pc (); |
c906108c SS |
21840 | break; |
21841 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21842 | { |
6f77053d | 21843 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21844 | line_ptr += 2; |
6f77053d PA |
21845 | |
21846 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21847 | } |
c906108c | 21848 | break; |
9aa1fe7e | 21849 | default: |
a738430d MK |
21850 | { |
21851 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21852 | int i; |
a738430d | 21853 | |
debd256d | 21854 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21855 | { |
21856 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21857 | line_ptr += bytes_read; | |
21858 | } | |
21859 | } | |
c906108c SS |
21860 | } |
21861 | } | |
d9b3de22 DE |
21862 | |
21863 | if (!end_sequence) | |
21864 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21865 | ||
21866 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21867 | in which case we still finish recording the last line). */ | |
6f77053d | 21868 | state_machine.record_line (true); |
c906108c | 21869 | } |
f3f5162e DE |
21870 | } |
21871 | ||
21872 | /* Decode the Line Number Program (LNP) for the given line_header | |
21873 | structure and CU. The actual information extracted and the type | |
21874 | of structures created from the LNP depends on the value of PST. | |
21875 | ||
21876 | 1. If PST is NULL, then this procedure uses the data from the program | |
21877 | to create all necessary symbol tables, and their linetables. | |
21878 | ||
21879 | 2. If PST is not NULL, this procedure reads the program to determine | |
21880 | the list of files included by the unit represented by PST, and | |
21881 | builds all the associated partial symbol tables. | |
21882 | ||
21883 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21884 | It is used for relative paths in the line table. | |
21885 | NOTE: When processing partial symtabs (pst != NULL), | |
21886 | comp_dir == pst->dirname. | |
21887 | ||
21888 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21889 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21890 | symtab we don't use it in the name of the psymtabs we create. | |
21891 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21892 | A good testcase for this is mb-inline.exp. |
21893 | ||
527f3840 JK |
21894 | LOWPC is the lowest address in CU (or 0 if not known). |
21895 | ||
21896 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21897 | for its PC<->lines mapping information. Otherwise only the filename | |
21898 | table is read in. */ | |
f3f5162e DE |
21899 | |
21900 | static void | |
21901 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21902 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21903 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21904 | { |
5e22e966 | 21905 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21906 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21907 | |
527f3840 JK |
21908 | if (decode_mapping) |
21909 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21910 | |
21911 | if (decode_for_pst_p) | |
21912 | { | |
aaa75496 | 21913 | /* Now that we're done scanning the Line Header Program, we can |
dda83cd7 | 21914 | create the psymtab of each included file. */ |
7ba99d21 | 21915 | for (auto &file_entry : lh->file_names ()) |
dda83cd7 SM |
21916 | if (file_entry.included_p == 1) |
21917 | { | |
c89b44cd | 21918 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21919 | const char *include_name = |
7ba99d21 AT |
21920 | psymtab_include_file_name (lh, file_entry, pst, |
21921 | comp_dir, &name_holder); | |
c6da4cef | 21922 | if (include_name != NULL) |
dda83cd7 SM |
21923 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21924 | } | |
aaa75496 | 21925 | } |
cb1df416 DJ |
21926 | else |
21927 | { | |
21928 | /* Make sure a symtab is created for every file, even files | |
21929 | which contain only variables (i.e. no code with associated | |
21930 | line numbers). */ | |
c24bdb02 KS |
21931 | buildsym_compunit *builder = cu->get_builder (); |
21932 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21933 | |
7ba99d21 | 21934 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21935 | { |
804d2729 | 21936 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21937 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21938 | { |
c24bdb02 | 21939 | builder->get_current_subfile ()->symtab |
804d2729 | 21940 | = allocate_symtab (cust, |
c24bdb02 | 21941 | builder->get_current_subfile ()->name); |
43f3e411 | 21942 | } |
c24bdb02 | 21943 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21944 | } |
21945 | } | |
c906108c SS |
21946 | } |
21947 | ||
21948 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21949 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21950 | or NULL if not known. |
c906108c SS |
21951 | This routine tries to keep line numbers from identical absolute and |
21952 | relative file names in a common subfile. | |
21953 | ||
21954 | Using the `list' example from the GDB testsuite, which resides in | |
21955 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21956 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21957 | ||
c5aa993b | 21958 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21959 | DW_AT_comp_dir: /compdir |
357e46e7 | 21960 | files.files[0].name: list0.h |
c5aa993b | 21961 | files.files[0].dir: /srcdir |
357e46e7 | 21962 | files.files[1].name: list0.c |
c5aa993b | 21963 | files.files[1].dir: /srcdir |
c906108c SS |
21964 | |
21965 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21966 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21967 | start_subfile will ensure that this happens provided that we pass the | |
21968 | concatenation of files.files[1].dir and files.files[1].name as the | |
21969 | subfile's name. */ | |
c906108c SS |
21970 | |
21971 | static void | |
804d2729 TT |
21972 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21973 | const char *dirname) | |
c906108c | 21974 | { |
43816ebc | 21975 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21976 | |
4d663531 | 21977 | /* In order not to lose the line information directory, |
4f1520fb FR |
21978 | we concatenate it to the filename when it makes sense. |
21979 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21980 | information): ``The directory index is ignored for file names | |
21981 | that represent full path names''. Thus ignoring dirname in the | |
21982 | `else' branch below isn't an issue. */ | |
c906108c | 21983 | |
d5166ae1 | 21984 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21985 | { |
43816ebc TT |
21986 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21987 | filename = copy.get (); | |
d521ce57 | 21988 | } |
c906108c | 21989 | |
c24bdb02 | 21990 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21991 | } |
21992 | ||
804d2729 TT |
21993 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21994 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21995 | |
c24bdb02 KS |
21996 | struct compunit_symtab * |
21997 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21998 | CORE_ADDR low_pc) | |
f4dc4d17 | 21999 | { |
c24bdb02 | 22000 | gdb_assert (m_builder == nullptr); |
43f3e411 | 22001 | |
c24bdb02 | 22002 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 22003 | (this->per_objfile->objfile, |
c24bdb02 | 22004 | name, comp_dir, language, low_pc)); |
93b8bea4 | 22005 | |
c24bdb02 | 22006 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 22007 | |
c24bdb02 KS |
22008 | get_builder ()->record_debugformat ("DWARF 2"); |
22009 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 22010 | |
c24bdb02 | 22011 | processing_has_namespace_info = false; |
43f3e411 | 22012 | |
c24bdb02 | 22013 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
22014 | } |
22015 | ||
4c2df51b DJ |
22016 | static void |
22017 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 22018 | struct dwarf2_cu *cu) |
4c2df51b | 22019 | { |
5e22e966 | 22020 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
22021 | struct comp_unit_head *cu_header = &cu->header; |
22022 | ||
4c2df51b DJ |
22023 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
22024 | code here to turn a symbol with DW_AT_external and a | |
22025 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
22026 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
22027 | with some versions of binutils) where shared libraries could have | |
22028 | relocations against symbols in their debug information - the | |
22029 | minimal symbol would have the right address, but the debug info | |
22030 | would not. It's no longer necessary, because we will explicitly | |
22031 | apply relocations when we read in the debug information now. */ | |
22032 | ||
22033 | /* A DW_AT_location attribute with no contents indicates that a | |
22034 | variable has been optimized away. */ | |
9d2246fc | 22035 | if (attr->form_is_block () && attr->as_block ()->size == 0) |
4c2df51b | 22036 | { |
f1e6e072 | 22037 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
22038 | return; |
22039 | } | |
22040 | ||
22041 | /* Handle one degenerate form of location expression specially, to | |
22042 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
22043 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
22044 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 22045 | |
9d2246fc TT |
22046 | if (attr->form_is_block ()) |
22047 | { | |
22048 | struct dwarf_block *block = attr->as_block (); | |
22049 | ||
22050 | if ((block->data[0] == DW_OP_addr | |
22051 | && block->size == 1 + cu_header->addr_size) | |
22052 | || ((block->data[0] == DW_OP_GNU_addr_index | |
dda83cd7 | 22053 | || block->data[0] == DW_OP_addrx) |
9d2246fc TT |
22054 | && (block->size |
22055 | == 1 + leb128_size (&block->data[1])))) | |
22056 | { | |
22057 | unsigned int dummy; | |
22058 | ||
22059 | if (block->data[0] == DW_OP_addr) | |
22060 | SET_SYMBOL_VALUE_ADDRESS | |
22061 | (sym, cu->header.read_address (objfile->obfd, | |
22062 | block->data + 1, | |
38583298 | 22063 | &dummy)); |
9d2246fc TT |
22064 | else |
22065 | SET_SYMBOL_VALUE_ADDRESS | |
22066 | (sym, read_addr_index_from_leb128 (cu, block->data + 1, | |
22067 | &dummy)); | |
22068 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; | |
22069 | fixup_symbol_section (sym, objfile); | |
22070 | SET_SYMBOL_VALUE_ADDRESS | |
22071 | (sym, | |
22072 | SYMBOL_VALUE_ADDRESS (sym) | |
22073 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
22074 | return; | |
22075 | } | |
4c2df51b DJ |
22076 | } |
22077 | ||
22078 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
22079 | expression evaluator, and use LOC_COMPUTED only when necessary | |
22080 | (i.e. when the value of a register or memory location is | |
22081 | referenced, or a thread-local block, etc.). Then again, it might | |
22082 | not be worthwhile. I'm assuming that it isn't unless performance | |
22083 | or memory numbers show me otherwise. */ | |
22084 | ||
f1e6e072 | 22085 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 22086 | |
f1e6e072 | 22087 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 22088 | cu->has_loclist = true; |
4c2df51b DJ |
22089 | } |
22090 | ||
c906108c SS |
22091 | /* Given a pointer to a DWARF information entry, figure out if we need |
22092 | to make a symbol table entry for it, and if so, create a new entry | |
22093 | and return a pointer to it. | |
22094 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
22095 | used the passed type. |
22096 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
22097 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
22098 | |
22099 | static struct symbol * | |
5e2db402 TT |
22100 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
22101 | struct symbol *space) | |
c906108c | 22102 | { |
976ca316 SM |
22103 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22104 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 22105 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 22106 | struct symbol *sym = NULL; |
15d034d0 | 22107 | const char *name; |
c906108c SS |
22108 | struct attribute *attr = NULL; |
22109 | struct attribute *attr2 = NULL; | |
e142c38c | 22110 | CORE_ADDR baseaddr; |
e37fd15a SW |
22111 | struct pending **list_to_add = NULL; |
22112 | ||
edb3359d | 22113 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 22114 | |
b3b3bada | 22115 | baseaddr = objfile->text_section_offset (); |
c906108c | 22116 | |
94af9270 | 22117 | name = dwarf2_name (die, cu); |
c906108c SS |
22118 | if (name) |
22119 | { | |
34eaf542 | 22120 | int suppress_add = 0; |
94af9270 | 22121 | |
34eaf542 TT |
22122 | if (space) |
22123 | sym = space; | |
22124 | else | |
8c14c3a3 | 22125 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 22126 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
22127 | |
22128 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 22129 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
22130 | /* Fortran does not have mangling standard and the mangling does differ |
22131 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
22132 | const char *physname |
22133 | = (cu->language == language_fortran | |
22134 | ? dwarf2_full_name (name, die, cu) | |
22135 | : dwarf2_physname (name, die, cu)); | |
22136 | const char *linkagename = dw2_linkage_name (die, cu); | |
22137 | ||
22138 | if (linkagename == nullptr || cu->language == language_ada) | |
22139 | sym->set_linkage_name (physname); | |
22140 | else | |
22141 | { | |
22142 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
22143 | sym->set_linkage_name (linkagename); | |
22144 | } | |
f55ee35c | 22145 | |
c906108c | 22146 | /* Default assumptions. |
dda83cd7 | 22147 | Use the passed type or decode it from the die. */ |
176620f1 | 22148 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 22149 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
22150 | if (type != NULL) |
22151 | SYMBOL_TYPE (sym) = type; | |
22152 | else | |
e7c27a73 | 22153 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
22154 | attr = dwarf2_attr (die, |
22155 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
22156 | cu); | |
435d3d88 | 22157 | if (attr != nullptr) |
529908cb | 22158 | SYMBOL_LINE (sym) = attr->constant_value (0); |
cb1df416 | 22159 | |
edb3359d DJ |
22160 | attr = dwarf2_attr (die, |
22161 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
22162 | cu); | |
529908cb | 22163 | if (attr != nullptr && attr->form_is_unsigned ()) |
cb1df416 | 22164 | { |
529908cb TT |
22165 | file_name_index file_index |
22166 | = (file_name_index) attr->as_unsigned (); | |
8c43009f | 22167 | struct file_entry *fe; |
9a619af0 | 22168 | |
ecfb656c PA |
22169 | if (cu->line_header != NULL) |
22170 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
22171 | else |
22172 | fe = NULL; | |
22173 | ||
22174 | if (fe == NULL) | |
b98664d3 | 22175 | complaint (_("file index out of range")); |
8c43009f PA |
22176 | else |
22177 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
22178 | } |
22179 | ||
c906108c SS |
22180 | switch (die->tag) |
22181 | { | |
22182 | case DW_TAG_label: | |
e142c38c | 22183 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 22184 | if (attr != nullptr) |
3e29f34a MR |
22185 | { |
22186 | CORE_ADDR addr; | |
22187 | ||
95f982e5 | 22188 | addr = attr->as_address (); |
3e29f34a | 22189 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 22190 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
8f5c6526 | 22191 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
3e29f34a | 22192 | } |
8f5c6526 TV |
22193 | else |
22194 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; | |
0f5238ed TT |
22195 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
22196 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
d3cb6808 | 22197 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
22198 | break; |
22199 | case DW_TAG_subprogram: | |
22200 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22201 | finish_block. */ | |
f1e6e072 | 22202 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 22203 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 22204 | if ((attr2 != nullptr && attr2->as_boolean ()) |
0a4b0913 AB |
22205 | || cu->language == language_ada |
22206 | || cu->language == language_fortran) | |
c906108c | 22207 | { |
dda83cd7 SM |
22208 | /* Subprograms marked external are stored as a global symbol. |
22209 | Ada and Fortran subprograms, whether marked external or | |
22210 | not, are always stored as a global symbol, because we want | |
22211 | to be able to access them globally. For instance, we want | |
22212 | to be able to break on a nested subprogram without having | |
22213 | to specify the context. */ | |
c24bdb02 | 22214 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
22215 | } |
22216 | else | |
22217 | { | |
e37fd15a | 22218 | list_to_add = cu->list_in_scope; |
c906108c SS |
22219 | } |
22220 | break; | |
edb3359d DJ |
22221 | case DW_TAG_inlined_subroutine: |
22222 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22223 | finish_block. */ | |
f1e6e072 | 22224 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 22225 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 22226 | list_to_add = cu->list_in_scope; |
edb3359d | 22227 | break; |
34eaf542 TT |
22228 | case DW_TAG_template_value_param: |
22229 | suppress_add = 1; | |
22230 | /* Fall through. */ | |
72929c62 | 22231 | case DW_TAG_constant: |
c906108c | 22232 | case DW_TAG_variable: |
254e6b9e | 22233 | case DW_TAG_member: |
0963b4bd MS |
22234 | /* Compilation with minimal debug info may result in |
22235 | variables with missing type entries. Change the | |
22236 | misleading `void' type to something sensible. */ | |
78134374 | 22237 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 22238 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 22239 | |
e142c38c | 22240 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
22241 | /* In the case of DW_TAG_member, we should only be called for |
22242 | static const members. */ | |
22243 | if (die->tag == DW_TAG_member) | |
22244 | { | |
3863f96c DE |
22245 | /* dwarf2_add_field uses die_is_declaration, |
22246 | so we do the same. */ | |
254e6b9e DE |
22247 | gdb_assert (die_is_declaration (die, cu)); |
22248 | gdb_assert (attr); | |
22249 | } | |
435d3d88 | 22250 | if (attr != nullptr) |
c906108c | 22251 | { |
e7c27a73 | 22252 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 22253 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 22254 | if (!suppress_add) |
34eaf542 | 22255 | { |
c45bc3f8 | 22256 | if (attr2 != nullptr && attr2->as_boolean ()) |
c24bdb02 | 22257 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 22258 | else |
e37fd15a | 22259 | list_to_add = cu->list_in_scope; |
34eaf542 | 22260 | } |
c906108c SS |
22261 | break; |
22262 | } | |
e142c38c | 22263 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 22264 | if (attr != nullptr) |
c906108c | 22265 | { |
e7c27a73 | 22266 | var_decode_location (attr, sym, cu); |
e142c38c | 22267 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
22268 | |
22269 | /* Fortran explicitly imports any global symbols to the local | |
22270 | scope by DW_TAG_common_block. */ | |
22271 | if (cu->language == language_fortran && die->parent | |
22272 | && die->parent->tag == DW_TAG_common_block) | |
22273 | attr2 = NULL; | |
22274 | ||
caac4577 JG |
22275 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22276 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 22277 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
22278 | { |
22279 | /* When a static variable is eliminated by the linker, | |
22280 | the corresponding debug information is not stripped | |
22281 | out, but the variable address is set to null; | |
22282 | do not add such variables into symbol table. */ | |
22283 | } | |
c45bc3f8 | 22284 | else if (attr2 != nullptr && attr2->as_boolean ()) |
1c809c68 | 22285 | { |
4b610737 TT |
22286 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22287 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 22288 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
22289 | { |
22290 | /* A global static variable might be subject to | |
22291 | copy relocation. We first check for a local | |
22292 | minsym, though, because maybe the symbol was | |
22293 | marked hidden, in which case this would not | |
22294 | apply. */ | |
22295 | bound_minimal_symbol found | |
22296 | = (lookup_minimal_symbol_linkage | |
987012b8 | 22297 | (sym->linkage_name (), objfile)); |
4b610737 TT |
22298 | if (found.minsym != nullptr) |
22299 | sym->maybe_copied = 1; | |
22300 | } | |
f55ee35c | 22301 | |
1c809c68 TT |
22302 | /* A variable with DW_AT_external is never static, |
22303 | but it may be block-scoped. */ | |
804d2729 | 22304 | list_to_add |
c24bdb02 KS |
22305 | = ((cu->list_in_scope |
22306 | == cu->get_builder ()->get_file_symbols ()) | |
22307 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22308 | : cu->list_in_scope); |
1c809c68 | 22309 | } |
c906108c | 22310 | else |
e37fd15a | 22311 | list_to_add = cu->list_in_scope; |
c906108c SS |
22312 | } |
22313 | else | |
22314 | { | |
22315 | /* We do not know the address of this symbol. | |
dda83cd7 SM |
22316 | If it is an external symbol and we have type information |
22317 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
22318 | The address of the variable will then be determined from | |
22319 | the minimal symbol table whenever the variable is | |
22320 | referenced. */ | |
e142c38c | 22321 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
22322 | |
22323 | /* Fortran explicitly imports any global symbols to the local | |
22324 | scope by DW_TAG_common_block. */ | |
22325 | if (cu->language == language_fortran && die->parent | |
22326 | && die->parent->tag == DW_TAG_common_block) | |
22327 | { | |
22328 | /* SYMBOL_CLASS doesn't matter here because | |
22329 | read_common_block is going to reset it. */ | |
22330 | if (!suppress_add) | |
22331 | list_to_add = cu->list_in_scope; | |
22332 | } | |
c45bc3f8 | 22333 | else if (attr2 != nullptr && attr2->as_boolean () |
0971de02 | 22334 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 22335 | { |
0fe7935b DJ |
22336 | /* A variable with DW_AT_external is never static, but it |
22337 | may be block-scoped. */ | |
804d2729 | 22338 | list_to_add |
c24bdb02 KS |
22339 | = ((cu->list_in_scope |
22340 | == cu->get_builder ()->get_file_symbols ()) | |
22341 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22342 | : cu->list_in_scope); |
0fe7935b | 22343 | |
f1e6e072 | 22344 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 22345 | } |
442ddf59 JK |
22346 | else if (!die_is_declaration (die, cu)) |
22347 | { | |
22348 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
22349 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
22350 | if (!suppress_add) |
22351 | list_to_add = cu->list_in_scope; | |
442ddf59 | 22352 | } |
c906108c SS |
22353 | } |
22354 | break; | |
22355 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
22356 | { |
22357 | /* If we are inside a function, mark this as an argument. If | |
22358 | not, we might be looking at an argument to an inlined function | |
22359 | when we do not have enough information to show inlined frames; | |
22360 | pretend it's a local variable in that case so that the user can | |
22361 | still see it. */ | |
804d2729 | 22362 | struct context_stack *curr |
c24bdb02 | 22363 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
22364 | if (curr != nullptr && curr->name != nullptr) |
22365 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
22366 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 22367 | if (attr != nullptr) |
a60f3166 TT |
22368 | { |
22369 | var_decode_location (attr, sym, cu); | |
22370 | } | |
22371 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 22372 | if (attr != nullptr) |
a60f3166 TT |
22373 | { |
22374 | dwarf2_const_value (attr, sym, cu); | |
22375 | } | |
f346a30d | 22376 | |
a60f3166 TT |
22377 | list_to_add = cu->list_in_scope; |
22378 | } | |
c906108c SS |
22379 | break; |
22380 | case DW_TAG_unspecified_parameters: | |
22381 | /* From varargs functions; gdb doesn't seem to have any | |
22382 | interest in this information, so just ignore it for now. | |
22383 | (FIXME?) */ | |
22384 | break; | |
34eaf542 TT |
22385 | case DW_TAG_template_type_param: |
22386 | suppress_add = 1; | |
22387 | /* Fall through. */ | |
c906108c | 22388 | case DW_TAG_class_type: |
680b30c7 | 22389 | case DW_TAG_interface_type: |
c906108c SS |
22390 | case DW_TAG_structure_type: |
22391 | case DW_TAG_union_type: | |
72019c9c | 22392 | case DW_TAG_set_type: |
c906108c | 22393 | case DW_TAG_enumeration_type: |
f1e6e072 | 22394 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22395 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 22396 | |
63d06c5c | 22397 | { |
9c37b5ae | 22398 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
22399 | really ever be static objects: otherwise, if you try |
22400 | to, say, break of a class's method and you're in a file | |
22401 | which doesn't mention that class, it won't work unless | |
22402 | the check for all static symbols in lookup_symbol_aux | |
22403 | saves you. See the OtherFileClass tests in | |
22404 | gdb.c++/namespace.exp. */ | |
22405 | ||
e37fd15a | 22406 | if (!suppress_add) |
34eaf542 | 22407 | { |
c24bdb02 | 22408 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 22409 | list_to_add |
c24bdb02 | 22410 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 22411 | && cu->language == language_cplus |
c24bdb02 | 22412 | ? builder->get_global_symbols () |
804d2729 | 22413 | : cu->list_in_scope); |
63d06c5c | 22414 | |
64382290 | 22415 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 22416 | ... }" also defines a typedef for "foo". */ |
64382290 | 22417 | if (cu->language == language_cplus |
45280282 | 22418 | || cu->language == language_ada |
c44af4eb TT |
22419 | || cu->language == language_d |
22420 | || cu->language == language_rust) | |
64382290 TT |
22421 | { |
22422 | /* The symbol's name is already allocated along | |
22423 | with this objfile, so we don't need to | |
22424 | duplicate it for the type. */ | |
7d93a1e0 | 22425 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 22426 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 22427 | } |
63d06c5c DC |
22428 | } |
22429 | } | |
c906108c SS |
22430 | break; |
22431 | case DW_TAG_typedef: | |
f1e6e072 | 22432 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 22433 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22434 | list_to_add = cu->list_in_scope; |
63d06c5c | 22435 | break; |
d8f62e84 | 22436 | case DW_TAG_array_type: |
c906108c | 22437 | case DW_TAG_base_type: |
dda83cd7 | 22438 | case DW_TAG_subrange_type: |
f1e6e072 | 22439 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22440 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22441 | list_to_add = cu->list_in_scope; |
c906108c SS |
22442 | break; |
22443 | case DW_TAG_enumerator: | |
e142c38c | 22444 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 22445 | if (attr != nullptr) |
c906108c | 22446 | { |
e7c27a73 | 22447 | dwarf2_const_value (attr, sym, cu); |
c906108c | 22448 | } |
63d06c5c DC |
22449 | { |
22450 | /* NOTE: carlton/2003-11-10: See comment above in the | |
22451 | DW_TAG_class_type, etc. block. */ | |
22452 | ||
804d2729 | 22453 | list_to_add |
c24bdb02 | 22454 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 22455 | && cu->language == language_cplus |
c24bdb02 | 22456 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 22457 | : cu->list_in_scope); |
63d06c5c | 22458 | } |
c906108c | 22459 | break; |
74921315 | 22460 | case DW_TAG_imported_declaration: |
5c4e30ca | 22461 | case DW_TAG_namespace: |
f1e6e072 | 22462 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 22463 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 22464 | break; |
530e8392 KB |
22465 | case DW_TAG_module: |
22466 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22467 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 22468 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 22469 | break; |
4357ac6c | 22470 | case DW_TAG_common_block: |
f1e6e072 | 22471 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 22472 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 22473 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 22474 | break; |
c906108c SS |
22475 | default: |
22476 | /* Not a tag we recognize. Hopefully we aren't processing | |
22477 | trash data, but since we must specifically ignore things | |
22478 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22479 | this point. */ |
b98664d3 | 22480 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 22481 | dwarf_tag_name (die->tag)); |
c906108c SS |
22482 | break; |
22483 | } | |
df8a16a1 | 22484 | |
e37fd15a SW |
22485 | if (suppress_add) |
22486 | { | |
22487 | sym->hash_next = objfile->template_symbols; | |
22488 | objfile->template_symbols = sym; | |
22489 | list_to_add = NULL; | |
22490 | } | |
22491 | ||
22492 | if (list_to_add != NULL) | |
d3cb6808 | 22493 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 22494 | |
df8a16a1 DJ |
22495 | /* For the benefit of old versions of GCC, check for anonymous |
22496 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22497 | if (!cu->processing_has_namespace_info |
94af9270 | 22498 | && cu->language == language_cplus) |
c24bdb02 | 22499 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
22500 | } |
22501 | return (sym); | |
22502 | } | |
22503 | ||
98bfdba5 PA |
22504 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22505 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22506 | standard (v4) is not entirely clear about the meaning of using | |
22507 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22508 | wider than the data. The conclusion of a discussion on the DWARF | |
22509 | list was that this is unspecified. We choose to always zero-extend | |
22510 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22511 | |
98bfdba5 | 22512 | static gdb_byte * |
ff39bb5e | 22513 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22514 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22515 | { |
5e22e966 | 22516 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
22517 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22518 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
529908cb | 22519 | LONGEST l = attr->constant_value (0); |
98bfdba5 PA |
22520 | |
22521 | if (bits < sizeof (*value) * 8) | |
22522 | { | |
22523 | l &= ((LONGEST) 1 << bits) - 1; | |
22524 | *value = l; | |
22525 | } | |
22526 | else if (bits == sizeof (*value) * 8) | |
22527 | *value = l; | |
22528 | else | |
22529 | { | |
224c3ddb | 22530 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22531 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22532 | return bytes; | |
22533 | } | |
22534 | ||
22535 | return NULL; | |
22536 | } | |
22537 | ||
22538 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22539 | the value does not fit in *VALUE, set *BYTES - either already | |
22540 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22541 | or, set *BATON, if we translated the constant to a location | |
22542 | expression. */ | |
22543 | ||
22544 | static void | |
ff39bb5e | 22545 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22546 | const char *name, struct obstack *obstack, |
22547 | struct dwarf2_cu *cu, | |
d521ce57 | 22548 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22549 | struct dwarf2_locexpr_baton **baton) |
22550 | { | |
5e22e966 | 22551 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 22552 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 22553 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22554 | struct dwarf_block *blk; |
98bfdba5 PA |
22555 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22556 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22557 | ||
22558 | *value = 0; | |
22559 | *bytes = NULL; | |
22560 | *baton = NULL; | |
c906108c SS |
22561 | |
22562 | switch (attr->form) | |
22563 | { | |
22564 | case DW_FORM_addr: | |
336d760d | 22565 | case DW_FORM_addrx: |
3019eac3 | 22566 | case DW_FORM_GNU_addr_index: |
ac56253d | 22567 | { |
ac56253d TT |
22568 | gdb_byte *data; |
22569 | ||
98bfdba5 PA |
22570 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22571 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22572 | cu_header->addr_size, |
98bfdba5 | 22573 | TYPE_LENGTH (type)); |
ac56253d TT |
22574 | /* Symbols of this form are reasonably rare, so we just |
22575 | piggyback on the existing location code rather than writing | |
22576 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22577 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 22578 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
22579 | (*baton)->per_cu = cu->per_cu; |
22580 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22581 | |
98bfdba5 | 22582 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22583 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22584 | (*baton)->data = data; |
ac56253d TT |
22585 | |
22586 | data[0] = DW_OP_addr; | |
22587 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
36d378cf | 22588 | byte_order, attr->as_address ()); |
ac56253d | 22589 | data[cu_header->addr_size + 1] = DW_OP_stack_value; |
ac56253d | 22590 | } |
c906108c | 22591 | break; |
4ac36638 | 22592 | case DW_FORM_string: |
93b5768b | 22593 | case DW_FORM_strp: |
cf532bd1 | 22594 | case DW_FORM_strx: |
3019eac3 | 22595 | case DW_FORM_GNU_str_index: |
36586728 | 22596 | case DW_FORM_GNU_strp_alt: |
c6481205 | 22597 | /* The string is already allocated on the objfile obstack, point |
98bfdba5 | 22598 | directly to it. */ |
2c830f54 | 22599 | *bytes = (const gdb_byte *) attr->as_string (); |
93b5768b | 22600 | break; |
c906108c SS |
22601 | case DW_FORM_block1: |
22602 | case DW_FORM_block2: | |
22603 | case DW_FORM_block4: | |
22604 | case DW_FORM_block: | |
2dc7f7b3 | 22605 | case DW_FORM_exprloc: |
0224619f | 22606 | case DW_FORM_data16: |
9d2246fc | 22607 | blk = attr->as_block (); |
98bfdba5 PA |
22608 | if (TYPE_LENGTH (type) != blk->size) |
22609 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22610 | TYPE_LENGTH (type)); | |
22611 | *bytes = blk->data; | |
c906108c | 22612 | break; |
2df3850c JM |
22613 | |
22614 | /* The DW_AT_const_value attributes are supposed to carry the | |
22615 | symbol's value "represented as it would be on the target | |
22616 | architecture." By the time we get here, it's already been | |
22617 | converted to host endianness, so we just need to sign- or | |
22618 | zero-extend it as appropriate. */ | |
22619 | case DW_FORM_data1: | |
3aef2284 | 22620 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22621 | break; |
c906108c | 22622 | case DW_FORM_data2: |
3aef2284 | 22623 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22624 | break; |
c906108c | 22625 | case DW_FORM_data4: |
3aef2284 | 22626 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22627 | break; |
c906108c | 22628 | case DW_FORM_data8: |
3aef2284 | 22629 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22630 | break; |
22631 | ||
c906108c | 22632 | case DW_FORM_sdata: |
663c44ac | 22633 | case DW_FORM_implicit_const: |
1bc397c5 | 22634 | *value = attr->as_signed (); |
2df3850c JM |
22635 | break; |
22636 | ||
c906108c | 22637 | case DW_FORM_udata: |
529908cb | 22638 | *value = attr->as_unsigned (); |
c906108c | 22639 | break; |
2df3850c | 22640 | |
c906108c | 22641 | default: |
b98664d3 | 22642 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22643 | dwarf_form_name (attr->form)); |
98bfdba5 | 22644 | *value = 0; |
c906108c SS |
22645 | break; |
22646 | } | |
22647 | } | |
22648 | ||
2df3850c | 22649 | |
98bfdba5 PA |
22650 | /* Copy constant value from an attribute to a symbol. */ |
22651 | ||
2df3850c | 22652 | static void |
ff39bb5e | 22653 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22654 | struct dwarf2_cu *cu) |
2df3850c | 22655 | { |
5e22e966 | 22656 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 22657 | LONGEST value; |
d521ce57 | 22658 | const gdb_byte *bytes; |
98bfdba5 | 22659 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22660 | |
98bfdba5 | 22661 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 22662 | sym->print_name (), |
98bfdba5 PA |
22663 | &objfile->objfile_obstack, cu, |
22664 | &value, &bytes, &baton); | |
2df3850c | 22665 | |
98bfdba5 PA |
22666 | if (baton != NULL) |
22667 | { | |
98bfdba5 | 22668 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22669 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22670 | } |
22671 | else if (bytes != NULL) | |
22672 | { | |
22673 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22674 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22675 | } |
22676 | else | |
22677 | { | |
22678 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22679 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22680 | } |
2df3850c JM |
22681 | } |
22682 | ||
c906108c SS |
22683 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22684 | ||
22685 | static struct type * | |
e7c27a73 | 22686 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22687 | { |
c906108c | 22688 | struct attribute *type_attr; |
c906108c | 22689 | |
e142c38c | 22690 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22691 | if (!type_attr) |
22692 | { | |
5e22e966 | 22693 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22694 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22695 | return objfile_type (objfile)->builtin_void; |
c906108c | 22696 | } |
348e048f | 22697 | |
673bfd45 | 22698 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22699 | } |
22700 | ||
b4ba55a1 JB |
22701 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22702 | that allows to find parallel types through that information instead | |
22703 | of having to do expensive parallel lookups by type name. */ | |
22704 | ||
22705 | static int | |
22706 | need_gnat_info (struct dwarf2_cu *cu) | |
22707 | { | |
de4cb04a JB |
22708 | /* Assume that the Ada compiler was GNAT, which always produces |
22709 | the auxiliary information. */ | |
22710 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22711 | } |
22712 | ||
b4ba55a1 JB |
22713 | /* Return the auxiliary type of the die in question using its |
22714 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22715 | attribute is not present. */ | |
22716 | ||
22717 | static struct type * | |
22718 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22719 | { | |
b4ba55a1 | 22720 | struct attribute *type_attr; |
b4ba55a1 JB |
22721 | |
22722 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22723 | if (!type_attr) | |
22724 | return NULL; | |
22725 | ||
673bfd45 | 22726 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22727 | } |
22728 | ||
22729 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22730 | descriptive type accordingly. */ | |
22731 | ||
22732 | static void | |
22733 | set_descriptive_type (struct type *type, struct die_info *die, | |
22734 | struct dwarf2_cu *cu) | |
22735 | { | |
22736 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22737 | ||
22738 | if (descriptive_type) | |
22739 | { | |
22740 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22741 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22742 | } | |
22743 | } | |
22744 | ||
c906108c SS |
22745 | /* Return the containing type of the die in question using its |
22746 | DW_AT_containing_type attribute. */ | |
22747 | ||
22748 | static struct type * | |
e7c27a73 | 22749 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22750 | { |
c906108c | 22751 | struct attribute *type_attr; |
5e22e966 | 22752 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22753 | |
e142c38c | 22754 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22755 | if (!type_attr) |
22756 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22757 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22758 | |
673bfd45 | 22759 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22760 | } |
22761 | ||
ac9ec31b DE |
22762 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22763 | ||
22764 | static struct type * | |
22765 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22766 | { | |
976ca316 SM |
22767 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22768 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 22769 | char *saved; |
ac9ec31b | 22770 | |
528e1572 SM |
22771 | std::string message |
22772 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22773 | objfile_name (objfile), | |
22774 | sect_offset_str (cu->header.sect_off), | |
22775 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22776 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22777 | |
19f392bc | 22778 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22779 | } |
22780 | ||
673bfd45 | 22781 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22782 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22783 | DW_AT_containing_type. | |
673bfd45 DE |
22784 | If there is no type substitute an error marker. */ |
22785 | ||
c906108c | 22786 | static struct type * |
ff39bb5e | 22787 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22788 | struct dwarf2_cu *cu) |
c906108c | 22789 | { |
976ca316 SM |
22790 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22791 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
22792 | struct type *this_type; |
22793 | ||
ac9ec31b DE |
22794 | gdb_assert (attr->name == DW_AT_type |
22795 | || attr->name == DW_AT_GNAT_descriptive_type | |
22796 | || attr->name == DW_AT_containing_type); | |
22797 | ||
673bfd45 DE |
22798 | /* First see if we have it cached. */ |
22799 | ||
36586728 TT |
22800 | if (attr->form == DW_FORM_GNU_ref_alt) |
22801 | { | |
22802 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 22803 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 22804 | |
976ca316 SM |
22805 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
22806 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 22807 | } |
cd6c91b4 | 22808 | else if (attr->form_is_ref ()) |
673bfd45 | 22809 | { |
0826b30a | 22810 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 22811 | |
976ca316 | 22812 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 22813 | } |
55f1336d | 22814 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22815 | { |
630ed6b9 | 22816 | ULONGEST signature = attr->as_signature (); |
673bfd45 | 22817 | |
ac9ec31b | 22818 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22819 | } |
22820 | else | |
22821 | { | |
b98664d3 | 22822 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22823 | " at %s [in module %s]"), |
22824 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22825 | objfile_name (objfile)); |
ac9ec31b | 22826 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22827 | } |
22828 | ||
22829 | /* If not cached we need to read it in. */ | |
22830 | ||
22831 | if (this_type == NULL) | |
22832 | { | |
ac9ec31b | 22833 | struct die_info *type_die = NULL; |
673bfd45 DE |
22834 | struct dwarf2_cu *type_cu = cu; |
22835 | ||
cd6c91b4 | 22836 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22837 | type_die = follow_die_ref (die, attr, &type_cu); |
22838 | if (type_die == NULL) | |
22839 | return build_error_marker_type (cu, die); | |
22840 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22841 | from an inter-CU reference and the type's CU got expanded before |
22842 | ours. */ | |
ac9ec31b | 22843 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22844 | } |
22845 | ||
22846 | /* If we still don't have a type use an error marker. */ | |
22847 | ||
22848 | if (this_type == NULL) | |
ac9ec31b | 22849 | return build_error_marker_type (cu, die); |
673bfd45 | 22850 | |
f792889a | 22851 | return this_type; |
c906108c SS |
22852 | } |
22853 | ||
673bfd45 DE |
22854 | /* Return the type in DIE, CU. |
22855 | Returns NULL for invalid types. | |
22856 | ||
02142a6c | 22857 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22858 | and only reads the die in if necessary. |
22859 | ||
22860 | NOTE: This can be called when reading in partial or full symbols. */ | |
22861 | ||
f792889a | 22862 | static struct type * |
e7c27a73 | 22863 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22864 | { |
f792889a DJ |
22865 | struct type *this_type; |
22866 | ||
22867 | this_type = get_die_type (die, cu); | |
22868 | if (this_type) | |
22869 | return this_type; | |
22870 | ||
673bfd45 DE |
22871 | return read_type_die_1 (die, cu); |
22872 | } | |
22873 | ||
22874 | /* Read the type in DIE, CU. | |
22875 | Returns NULL for invalid types. */ | |
22876 | ||
22877 | static struct type * | |
22878 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22879 | { | |
22880 | struct type *this_type = NULL; | |
22881 | ||
c906108c SS |
22882 | switch (die->tag) |
22883 | { | |
22884 | case DW_TAG_class_type: | |
680b30c7 | 22885 | case DW_TAG_interface_type: |
c906108c SS |
22886 | case DW_TAG_structure_type: |
22887 | case DW_TAG_union_type: | |
f792889a | 22888 | this_type = read_structure_type (die, cu); |
c906108c SS |
22889 | break; |
22890 | case DW_TAG_enumeration_type: | |
f792889a | 22891 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22892 | break; |
22893 | case DW_TAG_subprogram: | |
22894 | case DW_TAG_subroutine_type: | |
edb3359d | 22895 | case DW_TAG_inlined_subroutine: |
f792889a | 22896 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22897 | break; |
22898 | case DW_TAG_array_type: | |
f792889a | 22899 | this_type = read_array_type (die, cu); |
c906108c | 22900 | break; |
72019c9c | 22901 | case DW_TAG_set_type: |
f792889a | 22902 | this_type = read_set_type (die, cu); |
72019c9c | 22903 | break; |
c906108c | 22904 | case DW_TAG_pointer_type: |
f792889a | 22905 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22906 | break; |
22907 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22908 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22909 | break; |
22910 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22911 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22912 | break; | |
22913 | case DW_TAG_rvalue_reference_type: | |
22914 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22915 | break; |
22916 | case DW_TAG_const_type: | |
f792889a | 22917 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22918 | break; |
22919 | case DW_TAG_volatile_type: | |
f792889a | 22920 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22921 | break; |
06d66ee9 TT |
22922 | case DW_TAG_restrict_type: |
22923 | this_type = read_tag_restrict_type (die, cu); | |
22924 | break; | |
c906108c | 22925 | case DW_TAG_string_type: |
f792889a | 22926 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22927 | break; |
22928 | case DW_TAG_typedef: | |
f792889a | 22929 | this_type = read_typedef (die, cu); |
c906108c | 22930 | break; |
a02abb62 | 22931 | case DW_TAG_subrange_type: |
f792889a | 22932 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22933 | break; |
c906108c | 22934 | case DW_TAG_base_type: |
f792889a | 22935 | this_type = read_base_type (die, cu); |
c906108c | 22936 | break; |
81a17f79 | 22937 | case DW_TAG_unspecified_type: |
f792889a | 22938 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22939 | break; |
0114d602 DJ |
22940 | case DW_TAG_namespace: |
22941 | this_type = read_namespace_type (die, cu); | |
22942 | break; | |
f55ee35c JK |
22943 | case DW_TAG_module: |
22944 | this_type = read_module_type (die, cu); | |
22945 | break; | |
a2c2acaf MW |
22946 | case DW_TAG_atomic_type: |
22947 | this_type = read_tag_atomic_type (die, cu); | |
22948 | break; | |
c906108c | 22949 | default: |
b98664d3 | 22950 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22951 | dwarf_tag_name (die->tag)); |
c906108c SS |
22952 | break; |
22953 | } | |
63d06c5c | 22954 | |
f792889a | 22955 | return this_type; |
63d06c5c DC |
22956 | } |
22957 | ||
abc72ce4 DE |
22958 | /* See if we can figure out if the class lives in a namespace. We do |
22959 | this by looking for a member function; its demangled name will | |
22960 | contain namespace info, if there is any. | |
22961 | Return the computed name or NULL. | |
22962 | Space for the result is allocated on the objfile's obstack. | |
22963 | This is the full-die version of guess_partial_die_structure_name. | |
22964 | In this case we know DIE has no useful parent. */ | |
22965 | ||
43816ebc | 22966 | static const char * |
abc72ce4 DE |
22967 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22968 | { | |
22969 | struct die_info *spec_die; | |
22970 | struct dwarf2_cu *spec_cu; | |
22971 | struct die_info *child; | |
5e22e966 | 22972 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
22973 | |
22974 | spec_cu = cu; | |
22975 | spec_die = die_specification (die, &spec_cu); | |
22976 | if (spec_die != NULL) | |
22977 | { | |
22978 | die = spec_die; | |
22979 | cu = spec_cu; | |
22980 | } | |
22981 | ||
22982 | for (child = die->child; | |
22983 | child != NULL; | |
22984 | child = child->sibling) | |
22985 | { | |
22986 | if (child->tag == DW_TAG_subprogram) | |
22987 | { | |
73b9be8b | 22988 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22989 | |
7d45c7c3 | 22990 | if (linkage_name != NULL) |
abc72ce4 | 22991 | { |
43816ebc | 22992 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 22993 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 22994 | const char *name = NULL; |
abc72ce4 DE |
22995 | |
22996 | if (actual_name != NULL) | |
22997 | { | |
15d034d0 | 22998 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22999 | |
23000 | if (die_name != NULL | |
43816ebc | 23001 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
23002 | { |
23003 | /* Strip off the class name from the full name. | |
23004 | We want the prefix. */ | |
23005 | int die_name_len = strlen (die_name); | |
43816ebc TT |
23006 | int actual_name_len = strlen (actual_name.get ()); |
23007 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
23008 | |
23009 | /* Test for '::' as a sanity check. */ | |
23010 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 23011 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 23012 | name = obstack_strndup ( |
e3b94546 | 23013 | &objfile->per_bfd->storage_obstack, |
43816ebc | 23014 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
23015 | } |
23016 | } | |
abc72ce4 DE |
23017 | return name; |
23018 | } | |
23019 | } | |
23020 | } | |
23021 | ||
23022 | return NULL; | |
23023 | } | |
23024 | ||
96408a79 SA |
23025 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
23026 | prefix part in such case. See | |
23027 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
23028 | ||
a121b7c1 | 23029 | static const char * |
96408a79 SA |
23030 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
23031 | { | |
23032 | struct attribute *attr; | |
e6a959d6 | 23033 | const char *base; |
96408a79 SA |
23034 | |
23035 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
23036 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
23037 | return NULL; | |
23038 | ||
7d45c7c3 | 23039 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
23040 | return NULL; |
23041 | ||
73b9be8b | 23042 | attr = dw2_linkage_name_attr (die, cu); |
2c830f54 TT |
23043 | const char *attr_name = attr->as_string (); |
23044 | if (attr == NULL || attr_name == NULL) | |
96408a79 SA |
23045 | return NULL; |
23046 | ||
23047 | /* dwarf2_name had to be already called. */ | |
3b64bf15 | 23048 | gdb_assert (attr->canonical_string_p ()); |
96408a79 SA |
23049 | |
23050 | /* Strip the base name, keep any leading namespaces/classes. */ | |
2c830f54 TT |
23051 | base = strrchr (attr_name, ':'); |
23052 | if (base == NULL || base == attr_name || base[-1] != ':') | |
96408a79 SA |
23053 | return ""; |
23054 | ||
5e22e966 | 23055 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 | 23056 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
2c830f54 TT |
23057 | attr_name, |
23058 | &base[-1] - attr_name); | |
96408a79 SA |
23059 | } |
23060 | ||
fdde2d81 | 23061 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 23062 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 23063 | |
0114d602 DJ |
23064 | For example, if we're within the method foo() in the following |
23065 | code: | |
23066 | ||
23067 | namespace N { | |
23068 | class C { | |
23069 | void foo () { | |
23070 | } | |
23071 | }; | |
23072 | } | |
23073 | ||
23074 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 23075 | |
0d5cff50 | 23076 | static const char * |
e142c38c | 23077 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 23078 | { |
976ca316 | 23079 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
23080 | struct die_info *parent, *spec_die; |
23081 | struct dwarf2_cu *spec_cu; | |
23082 | struct type *parent_type; | |
a121b7c1 | 23083 | const char *retval; |
63d06c5c | 23084 | |
9c37b5ae | 23085 | if (cu->language != language_cplus |
c44af4eb TT |
23086 | && cu->language != language_fortran && cu->language != language_d |
23087 | && cu->language != language_rust) | |
0114d602 DJ |
23088 | return ""; |
23089 | ||
96408a79 SA |
23090 | retval = anonymous_struct_prefix (die, cu); |
23091 | if (retval) | |
23092 | return retval; | |
23093 | ||
0114d602 DJ |
23094 | /* We have to be careful in the presence of DW_AT_specification. |
23095 | For example, with GCC 3.4, given the code | |
23096 | ||
23097 | namespace N { | |
23098 | void foo() { | |
23099 | // Definition of N::foo. | |
23100 | } | |
23101 | } | |
23102 | ||
23103 | then we'll have a tree of DIEs like this: | |
23104 | ||
23105 | 1: DW_TAG_compile_unit | |
23106 | 2: DW_TAG_namespace // N | |
23107 | 3: DW_TAG_subprogram // declaration of N::foo | |
23108 | 4: DW_TAG_subprogram // definition of N::foo | |
23109 | DW_AT_specification // refers to die #3 | |
23110 | ||
23111 | Thus, when processing die #4, we have to pretend that we're in | |
23112 | the context of its DW_AT_specification, namely the contex of die | |
23113 | #3. */ | |
23114 | spec_cu = cu; | |
23115 | spec_die = die_specification (die, &spec_cu); | |
23116 | if (spec_die == NULL) | |
23117 | parent = die->parent; | |
23118 | else | |
63d06c5c | 23119 | { |
0114d602 DJ |
23120 | parent = spec_die->parent; |
23121 | cu = spec_cu; | |
63d06c5c | 23122 | } |
0114d602 DJ |
23123 | |
23124 | if (parent == NULL) | |
23125 | return ""; | |
98bfdba5 PA |
23126 | else if (parent->building_fullname) |
23127 | { | |
23128 | const char *name; | |
23129 | const char *parent_name; | |
23130 | ||
23131 | /* It has been seen on RealView 2.2 built binaries, | |
23132 | DW_TAG_template_type_param types actually _defined_ as | |
23133 | children of the parent class: | |
23134 | ||
23135 | enum E {}; | |
23136 | template class <class Enum> Class{}; | |
23137 | Class<enum E> class_e; | |
23138 | ||
dda83cd7 SM |
23139 | 1: DW_TAG_class_type (Class) |
23140 | 2: DW_TAG_enumeration_type (E) | |
23141 | 3: DW_TAG_enumerator (enum1:0) | |
23142 | 3: DW_TAG_enumerator (enum2:1) | |
23143 | ... | |
23144 | 2: DW_TAG_template_type_param | |
23145 | DW_AT_type DW_FORM_ref_udata (E) | |
98bfdba5 PA |
23146 | |
23147 | Besides being broken debug info, it can put GDB into an | |
23148 | infinite loop. Consider: | |
23149 | ||
23150 | When we're building the full name for Class<E>, we'll start | |
23151 | at Class, and go look over its template type parameters, | |
23152 | finding E. We'll then try to build the full name of E, and | |
23153 | reach here. We're now trying to build the full name of E, | |
23154 | and look over the parent DIE for containing scope. In the | |
23155 | broken case, if we followed the parent DIE of E, we'd again | |
23156 | find Class, and once again go look at its template type | |
23157 | arguments, etc., etc. Simply don't consider such parent die | |
23158 | as source-level parent of this die (it can't be, the language | |
23159 | doesn't allow it), and break the loop here. */ | |
23160 | name = dwarf2_name (die, cu); | |
23161 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 23162 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
23163 | name ? name : "<unknown>", |
23164 | parent_name ? parent_name : "<unknown>"); | |
23165 | return ""; | |
23166 | } | |
63d06c5c | 23167 | else |
0114d602 DJ |
23168 | switch (parent->tag) |
23169 | { | |
63d06c5c | 23170 | case DW_TAG_namespace: |
0114d602 | 23171 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
23172 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
23173 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
23174 | Work around this problem here. */ | |
23175 | if (cu->language == language_cplus | |
7d93a1e0 | 23176 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 23177 | return ""; |
0114d602 | 23178 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 23179 | return parent_type->name (); |
63d06c5c | 23180 | case DW_TAG_class_type: |
680b30c7 | 23181 | case DW_TAG_interface_type: |
63d06c5c | 23182 | case DW_TAG_structure_type: |
0114d602 | 23183 | case DW_TAG_union_type: |
f55ee35c | 23184 | case DW_TAG_module: |
0114d602 | 23185 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
23186 | if (parent_type->name () != NULL) |
23187 | return parent_type->name (); | |
0114d602 DJ |
23188 | else |
23189 | /* An anonymous structure is only allowed non-static data | |
23190 | members; no typedefs, no member functions, et cetera. | |
23191 | So it does not need a prefix. */ | |
23192 | return ""; | |
abc72ce4 | 23193 | case DW_TAG_compile_unit: |
95554aad | 23194 | case DW_TAG_partial_unit: |
abc72ce4 DE |
23195 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
23196 | if (cu->language == language_cplus | |
976ca316 | 23197 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
23198 | && die->child != NULL |
23199 | && (die->tag == DW_TAG_class_type | |
23200 | || die->tag == DW_TAG_structure_type | |
23201 | || die->tag == DW_TAG_union_type)) | |
23202 | { | |
43816ebc | 23203 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
23204 | if (name != NULL) |
23205 | return name; | |
23206 | } | |
23207 | return ""; | |
0a4b0913 AB |
23208 | case DW_TAG_subprogram: |
23209 | /* Nested subroutines in Fortran get a prefix with the name | |
23210 | of the parent's subroutine. */ | |
23211 | if (cu->language == language_fortran) | |
23212 | { | |
23213 | if ((die->tag == DW_TAG_subprogram) | |
23214 | && (dwarf2_name (parent, cu) != NULL)) | |
23215 | return dwarf2_name (parent, cu); | |
23216 | } | |
23217 | return determine_prefix (parent, cu); | |
3d567982 TT |
23218 | case DW_TAG_enumeration_type: |
23219 | parent_type = read_type_die (parent, cu); | |
23220 | if (TYPE_DECLARED_CLASS (parent_type)) | |
23221 | { | |
7d93a1e0 SM |
23222 | if (parent_type->name () != NULL) |
23223 | return parent_type->name (); | |
3d567982 TT |
23224 | return ""; |
23225 | } | |
23226 | /* Fall through. */ | |
63d06c5c | 23227 | default: |
8176b9b8 | 23228 | return determine_prefix (parent, cu); |
63d06c5c | 23229 | } |
63d06c5c DC |
23230 | } |
23231 | ||
3e43a32a MS |
23232 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
23233 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
23234 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
23235 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
23236 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 23237 | |
f55ee35c | 23238 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
23239 | |
23240 | static char * | |
f55ee35c | 23241 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
dda83cd7 | 23242 | int physname, struct dwarf2_cu *cu) |
63d06c5c | 23243 | { |
f55ee35c | 23244 | const char *lead = ""; |
5c315b68 | 23245 | const char *sep; |
63d06c5c | 23246 | |
3e43a32a MS |
23247 | if (suffix == NULL || suffix[0] == '\0' |
23248 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 23249 | sep = ""; |
45280282 IB |
23250 | else if (cu->language == language_d) |
23251 | { | |
23252 | /* For D, the 'main' function could be defined in any module, but it | |
23253 | should never be prefixed. */ | |
23254 | if (strcmp (suffix, "D main") == 0) | |
23255 | { | |
23256 | prefix = ""; | |
23257 | sep = ""; | |
23258 | } | |
23259 | else | |
23260 | sep = "."; | |
23261 | } | |
f55ee35c JK |
23262 | else if (cu->language == language_fortran && physname) |
23263 | { | |
23264 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
23265 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
23266 | ||
23267 | lead = "__"; | |
23268 | sep = "_MOD_"; | |
23269 | } | |
987504bb JJ |
23270 | else |
23271 | sep = "::"; | |
63d06c5c | 23272 | |
6dd47d34 DE |
23273 | if (prefix == NULL) |
23274 | prefix = ""; | |
23275 | if (suffix == NULL) | |
23276 | suffix = ""; | |
23277 | ||
987504bb JJ |
23278 | if (obs == NULL) |
23279 | { | |
3e43a32a | 23280 | char *retval |
224c3ddb SM |
23281 | = ((char *) |
23282 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 23283 | |
f55ee35c JK |
23284 | strcpy (retval, lead); |
23285 | strcat (retval, prefix); | |
6dd47d34 DE |
23286 | strcat (retval, sep); |
23287 | strcat (retval, suffix); | |
63d06c5c DC |
23288 | return retval; |
23289 | } | |
987504bb JJ |
23290 | else |
23291 | { | |
23292 | /* We have an obstack. */ | |
f55ee35c | 23293 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 23294 | } |
63d06c5c DC |
23295 | } |
23296 | ||
71c25dea TT |
23297 | /* Get name of a die, return NULL if not found. */ |
23298 | ||
15d034d0 TT |
23299 | static const char * |
23300 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 23301 | struct objfile *objfile) |
71c25dea TT |
23302 | { |
23303 | if (name && cu->language == language_cplus) | |
23304 | { | |
596dc4ad TT |
23305 | gdb::unique_xmalloc_ptr<char> canon_name |
23306 | = cp_canonicalize_string (name); | |
71c25dea | 23307 | |
596dc4ad TT |
23308 | if (canon_name != nullptr) |
23309 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
23310 | } |
23311 | ||
23312 | return name; | |
c906108c SS |
23313 | } |
23314 | ||
96553a0c DE |
23315 | /* Get name of a die, return NULL if not found. |
23316 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 23317 | |
15d034d0 | 23318 | static const char * |
e142c38c | 23319 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
23320 | { |
23321 | struct attribute *attr; | |
5e22e966 | 23322 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 23323 | |
e142c38c | 23324 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2c830f54 TT |
23325 | const char *attr_name = attr == nullptr ? nullptr : attr->as_string (); |
23326 | if (attr_name == nullptr | |
96553a0c | 23327 | && die->tag != DW_TAG_namespace |
53832f31 TT |
23328 | && die->tag != DW_TAG_class_type |
23329 | && die->tag != DW_TAG_interface_type | |
23330 | && die->tag != DW_TAG_structure_type | |
23331 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
23332 | return NULL; |
23333 | ||
23334 | switch (die->tag) | |
23335 | { | |
23336 | case DW_TAG_compile_unit: | |
95554aad | 23337 | case DW_TAG_partial_unit: |
71c25dea TT |
23338 | /* Compilation units have a DW_AT_name that is a filename, not |
23339 | a source language identifier. */ | |
23340 | case DW_TAG_enumeration_type: | |
23341 | case DW_TAG_enumerator: | |
23342 | /* These tags always have simple identifiers already; no need | |
23343 | to canonicalize them. */ | |
2c830f54 | 23344 | return attr_name; |
907af001 | 23345 | |
96553a0c | 23346 | case DW_TAG_namespace: |
2c830f54 TT |
23347 | if (attr_name != nullptr) |
23348 | return attr_name; | |
96553a0c DE |
23349 | return CP_ANONYMOUS_NAMESPACE_STR; |
23350 | ||
907af001 UW |
23351 | case DW_TAG_class_type: |
23352 | case DW_TAG_interface_type: | |
23353 | case DW_TAG_structure_type: | |
23354 | case DW_TAG_union_type: | |
23355 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
23356 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
23357 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
23358 | and GCC 4.4. We work around this problem by ignoring these. */ | |
2c830f54 TT |
23359 | if (attr_name != nullptr |
23360 | && (startswith (attr_name, "._") | |
23361 | || startswith (attr_name, "<anonymous"))) | |
907af001 | 23362 | return NULL; |
53832f31 TT |
23363 | |
23364 | /* GCC might emit a nameless typedef that has a linkage name. See | |
23365 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
2c830f54 | 23366 | if (!attr || attr_name == NULL) |
53832f31 | 23367 | { |
73b9be8b | 23368 | attr = dw2_linkage_name_attr (die, cu); |
95eb9e54 | 23369 | attr_name = attr == nullptr ? nullptr : attr->as_string (); |
2c830f54 | 23370 | if (attr == NULL || attr_name == NULL) |
53832f31 TT |
23371 | return NULL; |
23372 | ||
2c830f54 | 23373 | /* Avoid demangling attr_name the second time on a second |
df5c6c50 | 23374 | call for the same DIE. */ |
3b64bf15 | 23375 | if (!attr->canonical_string_p ()) |
53832f31 | 23376 | { |
43816ebc | 23377 | gdb::unique_xmalloc_ptr<char> demangled |
2c830f54 | 23378 | (gdb_demangle (attr_name, DMGL_TYPES)); |
4f180d53 AT |
23379 | if (demangled == nullptr) |
23380 | return nullptr; | |
43816ebc | 23381 | |
c6481205 | 23382 | attr->set_string_canonical (objfile->intern (demangled.get ())); |
95eb9e54 | 23383 | attr_name = attr->as_string (); |
53832f31 | 23384 | } |
67430cd0 | 23385 | |
2c830f54 TT |
23386 | /* Strip any leading namespaces/classes, keep only the |
23387 | base name. DW_AT_name for named DIEs does not | |
23388 | contain the prefixes. */ | |
23389 | const char *base = strrchr (attr_name, ':'); | |
23390 | if (base && base > attr_name && base[-1] == ':') | |
67430cd0 TT |
23391 | return &base[1]; |
23392 | else | |
2c830f54 | 23393 | return attr_name; |
53832f31 | 23394 | } |
907af001 UW |
23395 | break; |
23396 | ||
71c25dea | 23397 | default: |
907af001 UW |
23398 | break; |
23399 | } | |
23400 | ||
3b64bf15 | 23401 | if (!attr->canonical_string_p ()) |
c6481205 TT |
23402 | attr->set_string_canonical (dwarf2_canonicalize_name (attr_name, cu, |
23403 | objfile)); | |
2c830f54 | 23404 | return attr->as_string (); |
9219021c DC |
23405 | } |
23406 | ||
23407 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
23408 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
23409 | containing the return value on output. */ | |
9219021c DC |
23410 | |
23411 | static struct die_info * | |
f2f0e013 | 23412 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
23413 | { |
23414 | struct attribute *attr; | |
9219021c | 23415 | |
f2f0e013 | 23416 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
23417 | if (attr == NULL) |
23418 | return NULL; | |
23419 | ||
f2f0e013 | 23420 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
23421 | } |
23422 | ||
f9aca02d | 23423 | static void |
d97bc12b | 23424 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23425 | { |
23426 | unsigned int i; | |
23427 | ||
d97bc12b | 23428 | print_spaces (indent, f); |
9d8780f0 | 23429 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23430 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23431 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23432 | |
23433 | if (die->parent != NULL) | |
23434 | { | |
23435 | print_spaces (indent, f); | |
9d8780f0 SM |
23436 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23437 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23438 | } |
23439 | ||
23440 | print_spaces (indent, f); | |
23441 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23442 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23443 | |
d97bc12b DE |
23444 | print_spaces (indent, f); |
23445 | fprintf_unfiltered (f, " attributes:\n"); | |
23446 | ||
c906108c SS |
23447 | for (i = 0; i < die->num_attrs; ++i) |
23448 | { | |
d97bc12b DE |
23449 | print_spaces (indent, f); |
23450 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23451 | dwarf_attr_name (die->attrs[i].name), |
23452 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23453 | |
c906108c SS |
23454 | switch (die->attrs[i].form) |
23455 | { | |
c906108c | 23456 | case DW_FORM_addr: |
336d760d | 23457 | case DW_FORM_addrx: |
3019eac3 | 23458 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23459 | fprintf_unfiltered (f, "address: "); |
36d378cf | 23460 | fputs_filtered (hex_string (die->attrs[i].as_address ()), f); |
c906108c SS |
23461 | break; |
23462 | case DW_FORM_block2: | |
23463 | case DW_FORM_block4: | |
23464 | case DW_FORM_block: | |
23465 | case DW_FORM_block1: | |
56eb65bd | 23466 | fprintf_unfiltered (f, "block: size %s", |
9d2246fc | 23467 | pulongest (die->attrs[i].as_block ()->size)); |
c906108c | 23468 | break; |
2dc7f7b3 | 23469 | case DW_FORM_exprloc: |
56eb65bd | 23470 | fprintf_unfiltered (f, "expression: size %s", |
9d2246fc | 23471 | pulongest (die->attrs[i].as_block ()->size)); |
2dc7f7b3 | 23472 | break; |
0224619f JK |
23473 | case DW_FORM_data16: |
23474 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23475 | break; | |
4568ecf9 DE |
23476 | case DW_FORM_ref_addr: |
23477 | fprintf_unfiltered (f, "ref address: "); | |
529908cb | 23478 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
4568ecf9 | 23479 | break; |
36586728 TT |
23480 | case DW_FORM_GNU_ref_alt: |
23481 | fprintf_unfiltered (f, "alt ref address: "); | |
529908cb | 23482 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
36586728 | 23483 | break; |
10b3939b DJ |
23484 | case DW_FORM_ref1: |
23485 | case DW_FORM_ref2: | |
23486 | case DW_FORM_ref4: | |
4568ecf9 DE |
23487 | case DW_FORM_ref8: |
23488 | case DW_FORM_ref_udata: | |
d97bc12b | 23489 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
529908cb | 23490 | (long) (die->attrs[i].as_unsigned ())); |
10b3939b | 23491 | break; |
c906108c SS |
23492 | case DW_FORM_data1: |
23493 | case DW_FORM_data2: | |
23494 | case DW_FORM_data4: | |
ce5d95e1 | 23495 | case DW_FORM_data8: |
c906108c | 23496 | case DW_FORM_udata: |
43bbcdc2 | 23497 | fprintf_unfiltered (f, "constant: %s", |
529908cb | 23498 | pulongest (die->attrs[i].as_unsigned ())); |
c906108c | 23499 | break; |
2dc7f7b3 TT |
23500 | case DW_FORM_sec_offset: |
23501 | fprintf_unfiltered (f, "section offset: %s", | |
529908cb | 23502 | pulongest (die->attrs[i].as_unsigned ())); |
2dc7f7b3 | 23503 | break; |
55f1336d | 23504 | case DW_FORM_ref_sig8: |
ac9ec31b | 23505 | fprintf_unfiltered (f, "signature: %s", |
630ed6b9 | 23506 | hex_string (die->attrs[i].as_signature ())); |
348e048f | 23507 | break; |
c906108c | 23508 | case DW_FORM_string: |
4bdf3d34 | 23509 | case DW_FORM_strp: |
43988095 | 23510 | case DW_FORM_line_strp: |
cf532bd1 | 23511 | case DW_FORM_strx: |
3019eac3 | 23512 | case DW_FORM_GNU_str_index: |
36586728 | 23513 | case DW_FORM_GNU_strp_alt: |
8285870a | 23514 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c6481205 TT |
23515 | die->attrs[i].as_string () |
23516 | ? die->attrs[i].as_string () : "", | |
23517 | die->attrs[i].canonical_string_p () ? "is" : "not"); | |
c906108c SS |
23518 | break; |
23519 | case DW_FORM_flag: | |
c45bc3f8 | 23520 | if (die->attrs[i].as_boolean ()) |
d97bc12b | 23521 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23522 | else |
d97bc12b | 23523 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23524 | break; |
2dc7f7b3 TT |
23525 | case DW_FORM_flag_present: |
23526 | fprintf_unfiltered (f, "flag: TRUE"); | |
23527 | break; | |
a8329558 | 23528 | case DW_FORM_indirect: |
0963b4bd MS |
23529 | /* The reader will have reduced the indirect form to |
23530 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 23531 | fprintf_unfiltered (f, |
3e43a32a | 23532 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 23533 | break; |
1bc397c5 | 23534 | case DW_FORM_sdata: |
663c44ac JK |
23535 | case DW_FORM_implicit_const: |
23536 | fprintf_unfiltered (f, "constant: %s", | |
1bc397c5 | 23537 | plongest (die->attrs[i].as_signed ())); |
663c44ac | 23538 | break; |
c906108c | 23539 | default: |
d97bc12b | 23540 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23541 | die->attrs[i].form); |
d97bc12b | 23542 | break; |
c906108c | 23543 | } |
d97bc12b | 23544 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23545 | } |
23546 | } | |
23547 | ||
f9aca02d | 23548 | static void |
d97bc12b | 23549 | dump_die_for_error (struct die_info *die) |
c906108c | 23550 | { |
d97bc12b DE |
23551 | dump_die_shallow (gdb_stderr, 0, die); |
23552 | } | |
23553 | ||
23554 | static void | |
23555 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23556 | { | |
23557 | int indent = level * 4; | |
23558 | ||
23559 | gdb_assert (die != NULL); | |
23560 | ||
23561 | if (level >= max_level) | |
23562 | return; | |
23563 | ||
23564 | dump_die_shallow (f, indent, die); | |
23565 | ||
23566 | if (die->child != NULL) | |
c906108c | 23567 | { |
d97bc12b DE |
23568 | print_spaces (indent, f); |
23569 | fprintf_unfiltered (f, " Children:"); | |
23570 | if (level + 1 < max_level) | |
23571 | { | |
23572 | fprintf_unfiltered (f, "\n"); | |
23573 | dump_die_1 (f, level + 1, max_level, die->child); | |
23574 | } | |
23575 | else | |
23576 | { | |
3e43a32a MS |
23577 | fprintf_unfiltered (f, |
23578 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23579 | } |
23580 | } | |
23581 | ||
23582 | if (die->sibling != NULL && level > 0) | |
23583 | { | |
23584 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23585 | } |
23586 | } | |
23587 | ||
d97bc12b DE |
23588 | /* This is called from the pdie macro in gdbinit.in. |
23589 | It's not static so gcc will keep a copy callable from gdb. */ | |
23590 | ||
23591 | void | |
23592 | dump_die (struct die_info *die, int max_level) | |
23593 | { | |
23594 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23595 | } | |
23596 | ||
f9aca02d | 23597 | static void |
51545339 | 23598 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23599 | { |
51545339 | 23600 | void **slot; |
c906108c | 23601 | |
9c541725 PA |
23602 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23603 | to_underlying (die->sect_off), | |
b64f50a1 | 23604 | INSERT); |
51545339 DJ |
23605 | |
23606 | *slot = die; | |
c906108c SS |
23607 | } |
23608 | ||
348e048f DE |
23609 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23610 | On entry *REF_CU is the CU of SRC_DIE. | |
23611 | On exit *REF_CU is the CU of the result. */ | |
23612 | ||
23613 | static struct die_info * | |
ff39bb5e | 23614 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23615 | struct dwarf2_cu **ref_cu) |
23616 | { | |
23617 | struct die_info *die; | |
23618 | ||
cd6c91b4 | 23619 | if (attr->form_is_ref ()) |
348e048f | 23620 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23621 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23622 | die = follow_die_sig (src_die, attr, ref_cu); |
23623 | else | |
23624 | { | |
23625 | dump_die_for_error (src_die); | |
23626 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 23627 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
23628 | } |
23629 | ||
23630 | return die; | |
03dd20cc DJ |
23631 | } |
23632 | ||
5c631832 | 23633 | /* Follow reference OFFSET. |
673bfd45 DE |
23634 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23635 | On exit *REF_CU is the CU of the result. | |
23636 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23637 | |
f9aca02d | 23638 | static struct die_info * |
9c541725 | 23639 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23640 | struct dwarf2_cu **ref_cu) |
c906108c | 23641 | { |
10b3939b | 23642 | struct die_info temp_die; |
f2f0e013 | 23643 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 23644 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 23645 | |
348e048f DE |
23646 | gdb_assert (cu->per_cu != NULL); |
23647 | ||
98bfdba5 PA |
23648 | target_cu = cu; |
23649 | ||
17e593e9 SM |
23650 | dwarf_read_debug_printf_v ("source CU offset: %s, target offset: %s, " |
23651 | "source CU contains target offset: %d", | |
23652 | sect_offset_str (cu->per_cu->sect_off), | |
23653 | sect_offset_str (sect_off), | |
23654 | cu->header.offset_in_cu_p (sect_off)); | |
23655 | ||
3019eac3 | 23656 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23657 | { |
23658 | /* .debug_types CUs cannot reference anything outside their CU. | |
23659 | If they need to, they have to reference a signatured type via | |
55f1336d | 23660 | DW_FORM_ref_sig8. */ |
4057dfde | 23661 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 23662 | return NULL; |
348e048f | 23663 | } |
36586728 | 23664 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 23665 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
23666 | { |
23667 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23668 | |
9c541725 | 23669 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 23670 | per_objfile); |
03dd20cc | 23671 | |
17e593e9 SM |
23672 | dwarf_read_debug_printf_v ("target CU offset: %s, " |
23673 | "target CU DIEs loaded: %d", | |
23674 | sect_offset_str (per_cu->sect_off), | |
23675 | per_objfile->get_cu (per_cu) != nullptr); | |
23676 | ||
03dd20cc | 23677 | /* If necessary, add it to the queue and load its DIEs. */ |
976ca316 | 23678 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
23679 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
23680 | false, cu->language); | |
03dd20cc | 23681 | |
976ca316 | 23682 | target_cu = per_objfile->get_cu (per_cu); |
10b3939b | 23683 | } |
98bfdba5 PA |
23684 | else if (cu->dies == NULL) |
23685 | { | |
23686 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 | 23687 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
4a636814 SM |
23688 | load_full_comp_unit (cu->per_cu, per_objfile, cu, false, |
23689 | language_minimal); | |
98bfdba5 | 23690 | } |
c906108c | 23691 | |
f2f0e013 | 23692 | *ref_cu = target_cu; |
9c541725 | 23693 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
23694 | |
23695 | if (target_cu != cu) | |
23696 | target_cu->ancestor = cu; | |
23697 | ||
9a3c8263 | 23698 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23699 | &temp_die, |
23700 | to_underlying (sect_off)); | |
5c631832 | 23701 | } |
10b3939b | 23702 | |
5c631832 JK |
23703 | /* Follow reference attribute ATTR of SRC_DIE. |
23704 | On entry *REF_CU is the CU of SRC_DIE. | |
23705 | On exit *REF_CU is the CU of the result. */ | |
23706 | ||
23707 | static struct die_info * | |
ff39bb5e | 23708 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23709 | struct dwarf2_cu **ref_cu) |
23710 | { | |
0826b30a | 23711 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
23712 | struct dwarf2_cu *cu = *ref_cu; |
23713 | struct die_info *die; | |
23714 | ||
9c541725 | 23715 | die = follow_die_offset (sect_off, |
36586728 TT |
23716 | (attr->form == DW_FORM_GNU_ref_alt |
23717 | || cu->per_cu->is_dwz), | |
23718 | ref_cu); | |
5c631832 | 23719 | if (!die) |
9d8780f0 SM |
23720 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23721 | "at %s [in module %s]"), | |
23722 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23723 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 23724 | |
5c631832 JK |
23725 | return die; |
23726 | } | |
23727 | ||
d4c9a4f8 | 23728 | /* See read.h. */ |
5c631832 JK |
23729 | |
23730 | struct dwarf2_locexpr_baton | |
9c541725 | 23731 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 23732 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23733 | dwarf2_per_objfile *per_objfile, |
041d9819 SM |
23734 | gdb::function_view<CORE_ADDR ()> get_frame_pc, |
23735 | bool resolve_abstract_p) | |
5c631832 | 23736 | { |
5c631832 JK |
23737 | struct die_info *die; |
23738 | struct attribute *attr; | |
23739 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 23740 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 23741 | |
976ca316 | 23742 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 23743 | if (cu == nullptr) |
976ca316 | 23744 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
23745 | |
23746 | if (cu == nullptr) | |
cc12ce38 DE |
23747 | { |
23748 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23749 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23750 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23751 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23752 | } |
918dd910 | 23753 | |
9c541725 | 23754 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23755 | if (!die) |
9d8780f0 SM |
23756 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23757 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23758 | |
23759 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23760 | if (!attr && resolve_abstract_p |
976ca316 SM |
23761 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
23762 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 | 23763 | { |
041d9819 | 23764 | CORE_ADDR pc = get_frame_pc (); |
b3b3bada | 23765 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 23766 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 23767 | |
3360b6e7 | 23768 | for (const auto &cand_off |
976ca316 | 23769 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 23770 | { |
3360b6e7 TV |
23771 | struct dwarf2_cu *cand_cu = cu; |
23772 | struct die_info *cand | |
23773 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23774 | if (!cand | |
23775 | || !cand->parent | |
e4a62c65 TV |
23776 | || cand->parent->tag != DW_TAG_subprogram) |
23777 | continue; | |
23778 | ||
23779 | CORE_ADDR pc_low, pc_high; | |
23780 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23781 | if (pc_low == ((CORE_ADDR) -1)) |
23782 | continue; | |
23783 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23784 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23785 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23786 | continue; |
23787 | ||
23788 | die = cand; | |
23789 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23790 | break; | |
23791 | } | |
23792 | } | |
23793 | ||
5c631832 JK |
23794 | if (!attr) |
23795 | { | |
e103e986 JK |
23796 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23797 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23798 | |
e103e986 | 23799 | retval.data = NULL; |
5c631832 JK |
23800 | retval.size = 0; |
23801 | } | |
cd6c91b4 | 23802 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23803 | { |
23804 | struct dwarf2_loclist_baton loclist_baton; | |
041d9819 | 23805 | CORE_ADDR pc = get_frame_pc (); |
8cf6f0b1 TT |
23806 | size_t size; |
23807 | ||
23808 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23809 | ||
23810 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23811 | &size, pc); | |
23812 | retval.size = size; | |
23813 | } | |
5c631832 JK |
23814 | else |
23815 | { | |
4fc6c0d5 | 23816 | if (!attr->form_is_block ()) |
9d8780f0 | 23817 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23818 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23819 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 | 23820 | |
9d2246fc TT |
23821 | struct dwarf_block *block = attr->as_block (); |
23822 | retval.data = block->data; | |
23823 | retval.size = block->size; | |
5c631832 | 23824 | } |
976ca316 | 23825 | retval.per_objfile = per_objfile; |
5c631832 | 23826 | retval.per_cu = cu->per_cu; |
918dd910 | 23827 | |
976ca316 | 23828 | per_objfile->age_comp_units (); |
918dd910 | 23829 | |
5c631832 | 23830 | return retval; |
348e048f DE |
23831 | } |
23832 | ||
d4c9a4f8 | 23833 | /* See read.h. */ |
8b9737bf TT |
23834 | |
23835 | struct dwarf2_locexpr_baton | |
23836 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 23837 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23838 | dwarf2_per_objfile *per_objfile, |
041d9819 | 23839 | gdb::function_view<CORE_ADDR ()> get_frame_pc) |
8b9737bf | 23840 | { |
9c541725 | 23841 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23842 | |
14095eb3 | 23843 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
041d9819 | 23844 | get_frame_pc); |
8b9737bf TT |
23845 | } |
23846 | ||
b6807d98 TT |
23847 | /* Write a constant of a given type as target-ordered bytes into |
23848 | OBSTACK. */ | |
23849 | ||
23850 | static const gdb_byte * | |
23851 | write_constant_as_bytes (struct obstack *obstack, | |
23852 | enum bfd_endian byte_order, | |
23853 | struct type *type, | |
23854 | ULONGEST value, | |
23855 | LONGEST *len) | |
23856 | { | |
23857 | gdb_byte *result; | |
23858 | ||
23859 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23860 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23861 | store_unsigned_integer (result, *len, byte_order, value); |
23862 | ||
23863 | return result; | |
23864 | } | |
23865 | ||
d4c9a4f8 | 23866 | /* See read.h. */ |
b6807d98 TT |
23867 | |
23868 | const gdb_byte * | |
9c541725 | 23869 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 23870 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23871 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 23872 | obstack *obstack, |
b6807d98 TT |
23873 | LONGEST *len) |
23874 | { | |
b6807d98 TT |
23875 | struct die_info *die; |
23876 | struct attribute *attr; | |
23877 | const gdb_byte *result = NULL; | |
23878 | struct type *type; | |
23879 | LONGEST value; | |
23880 | enum bfd_endian byte_order; | |
14095eb3 | 23881 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 23882 | |
7188ed02 | 23883 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23884 | if (cu == nullptr) |
23885 | cu = load_cu (per_cu, per_objfile, false); | |
23886 | ||
23887 | if (cu == nullptr) | |
cc12ce38 DE |
23888 | { |
23889 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23890 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23891 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23892 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23893 | } |
b6807d98 | 23894 | |
9c541725 | 23895 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23896 | if (!die) |
9d8780f0 SM |
23897 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23898 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23899 | |
23900 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23901 | if (attr == NULL) | |
23902 | return NULL; | |
23903 | ||
e3b94546 | 23904 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23905 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23906 | ||
23907 | switch (attr->form) | |
23908 | { | |
23909 | case DW_FORM_addr: | |
336d760d | 23910 | case DW_FORM_addrx: |
b6807d98 TT |
23911 | case DW_FORM_GNU_addr_index: |
23912 | { | |
23913 | gdb_byte *tem; | |
23914 | ||
23915 | *len = cu->header.addr_size; | |
224c3ddb | 23916 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
36d378cf | 23917 | store_unsigned_integer (tem, *len, byte_order, attr->as_address ()); |
b6807d98 TT |
23918 | result = tem; |
23919 | } | |
23920 | break; | |
23921 | case DW_FORM_string: | |
23922 | case DW_FORM_strp: | |
cf532bd1 | 23923 | case DW_FORM_strx: |
b6807d98 TT |
23924 | case DW_FORM_GNU_str_index: |
23925 | case DW_FORM_GNU_strp_alt: | |
c6481205 | 23926 | /* The string is already allocated on the objfile obstack, point |
b6807d98 | 23927 | directly to it. */ |
2c830f54 TT |
23928 | { |
23929 | const char *attr_name = attr->as_string (); | |
23930 | result = (const gdb_byte *) attr_name; | |
23931 | *len = strlen (attr_name); | |
23932 | } | |
b6807d98 TT |
23933 | break; |
23934 | case DW_FORM_block1: | |
23935 | case DW_FORM_block2: | |
23936 | case DW_FORM_block4: | |
23937 | case DW_FORM_block: | |
23938 | case DW_FORM_exprloc: | |
0224619f | 23939 | case DW_FORM_data16: |
9d2246fc TT |
23940 | { |
23941 | struct dwarf_block *block = attr->as_block (); | |
23942 | result = block->data; | |
23943 | *len = block->size; | |
23944 | } | |
b6807d98 TT |
23945 | break; |
23946 | ||
23947 | /* The DW_AT_const_value attributes are supposed to carry the | |
23948 | symbol's value "represented as it would be on the target | |
23949 | architecture." By the time we get here, it's already been | |
23950 | converted to host endianness, so we just need to sign- or | |
23951 | zero-extend it as appropriate. */ | |
23952 | case DW_FORM_data1: | |
23953 | type = die_type (die, cu); | |
23954 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23955 | if (result == NULL) | |
23956 | result = write_constant_as_bytes (obstack, byte_order, | |
23957 | type, value, len); | |
23958 | break; | |
23959 | case DW_FORM_data2: | |
23960 | type = die_type (die, cu); | |
23961 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23962 | if (result == NULL) | |
23963 | result = write_constant_as_bytes (obstack, byte_order, | |
23964 | type, value, len); | |
23965 | break; | |
23966 | case DW_FORM_data4: | |
23967 | type = die_type (die, cu); | |
23968 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23969 | if (result == NULL) | |
23970 | result = write_constant_as_bytes (obstack, byte_order, | |
23971 | type, value, len); | |
23972 | break; | |
23973 | case DW_FORM_data8: | |
23974 | type = die_type (die, cu); | |
23975 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23976 | if (result == NULL) | |
23977 | result = write_constant_as_bytes (obstack, byte_order, | |
23978 | type, value, len); | |
23979 | break; | |
23980 | ||
23981 | case DW_FORM_sdata: | |
663c44ac | 23982 | case DW_FORM_implicit_const: |
b6807d98 TT |
23983 | type = die_type (die, cu); |
23984 | result = write_constant_as_bytes (obstack, byte_order, | |
1bc397c5 | 23985 | type, attr->as_signed (), len); |
b6807d98 TT |
23986 | break; |
23987 | ||
23988 | case DW_FORM_udata: | |
23989 | type = die_type (die, cu); | |
23990 | result = write_constant_as_bytes (obstack, byte_order, | |
529908cb | 23991 | type, attr->as_unsigned (), len); |
b6807d98 TT |
23992 | break; |
23993 | ||
23994 | default: | |
b98664d3 | 23995 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23996 | dwarf_form_name (attr->form)); |
23997 | break; | |
23998 | } | |
23999 | ||
24000 | return result; | |
24001 | } | |
24002 | ||
d4c9a4f8 | 24003 | /* See read.h. */ |
7942e96e AA |
24004 | |
24005 | struct type * | |
9c541725 | 24006 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
24007 | dwarf2_per_cu_data *per_cu, |
24008 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 24009 | { |
7942e96e AA |
24010 | struct die_info *die; |
24011 | ||
7188ed02 | 24012 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
24013 | if (cu == nullptr) |
24014 | cu = load_cu (per_cu, per_objfile, false); | |
24015 | ||
24016 | if (cu == nullptr) | |
24017 | return nullptr; | |
7942e96e | 24018 | |
9c541725 | 24019 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
24020 | if (!die) |
24021 | return NULL; | |
24022 | ||
24023 | return die_type (die, cu); | |
24024 | } | |
24025 | ||
8cb5117c | 24026 | /* See read.h. */ |
8a9b8146 TT |
24027 | |
24028 | struct type * | |
b64f50a1 | 24029 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
24030 | dwarf2_per_cu_data *per_cu, |
24031 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 24032 | { |
9c541725 | 24033 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 24034 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
24035 | } |
24036 | ||
ac9ec31b | 24037 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 24038 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
24039 | On exit *REF_CU is the CU of the result. |
24040 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
24041 | |
24042 | static struct die_info * | |
ac9ec31b DE |
24043 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
24044 | struct dwarf2_cu **ref_cu) | |
348e048f | 24045 | { |
348e048f | 24046 | struct die_info temp_die; |
c24bdb02 | 24047 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 24048 | struct die_info *die; |
976ca316 | 24049 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 24050 | |
348e048f | 24051 | |
ac9ec31b DE |
24052 | /* While it might be nice to assert sig_type->type == NULL here, |
24053 | we can get here for DW_AT_imported_declaration where we need | |
24054 | the DIE not the type. */ | |
348e048f DE |
24055 | |
24056 | /* If necessary, add it to the queue and load its DIEs. */ | |
24057 | ||
976ca316 | 24058 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, per_objfile, |
120ce1b5 | 24059 | language_minimal)) |
976ca316 | 24060 | read_signatured_type (sig_type, per_objfile); |
348e048f | 24061 | |
976ca316 | 24062 | sig_cu = per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 24063 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
24064 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
24065 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 24066 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 24067 | to_underlying (temp_die.sect_off)); |
348e048f DE |
24068 | if (die) |
24069 | { | |
796a7ff8 DE |
24070 | /* For .gdb_index version 7 keep track of included TUs. |
24071 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
24072 | if (per_objfile->per_bfd->index_table != NULL |
24073 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 24074 | { |
ae640021 | 24075 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
24076 | } |
24077 | ||
348e048f | 24078 | *ref_cu = sig_cu; |
c24bdb02 KS |
24079 | if (sig_cu != cu) |
24080 | sig_cu->ancestor = cu; | |
24081 | ||
348e048f DE |
24082 | return die; |
24083 | } | |
24084 | ||
ac9ec31b DE |
24085 | return NULL; |
24086 | } | |
24087 | ||
24088 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
24089 | On entry *REF_CU is the CU of SRC_DIE. | |
24090 | On exit *REF_CU is the CU of the result. | |
24091 | The result is the DIE of the type. | |
24092 | If the referenced type cannot be found an error is thrown. */ | |
24093 | ||
24094 | static struct die_info * | |
ff39bb5e | 24095 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
24096 | struct dwarf2_cu **ref_cu) |
24097 | { | |
630ed6b9 | 24098 | ULONGEST signature = attr->as_signature (); |
ac9ec31b DE |
24099 | struct signatured_type *sig_type; |
24100 | struct die_info *die; | |
24101 | ||
24102 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
24103 | ||
a2ce51a0 | 24104 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
24105 | /* sig_type will be NULL if the signatured type is missing from |
24106 | the debug info. */ | |
24107 | if (sig_type == NULL) | |
24108 | { | |
24109 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
dda83cd7 SM |
24110 | " from DIE at %s [in module %s]"), |
24111 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 24112 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
24113 | } |
24114 | ||
24115 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
24116 | if (die == NULL) | |
24117 | { | |
24118 | dump_die_for_error (src_die); | |
24119 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
24120 | " from DIE at %s [in module %s]"), |
24121 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 24122 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
24123 | } |
24124 | ||
24125 | return die; | |
24126 | } | |
24127 | ||
24128 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
24129 | reading in and processing the type unit if necessary. */ | |
24130 | ||
24131 | static struct type * | |
24132 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
24133 | struct dwarf2_cu *cu) | |
24134 | { | |
976ca316 | 24135 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
24136 | struct signatured_type *sig_type; |
24137 | struct dwarf2_cu *type_cu; | |
24138 | struct die_info *type_die; | |
24139 | struct type *type; | |
24140 | ||
a2ce51a0 | 24141 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
24142 | /* sig_type will be NULL if the signatured type is missing from |
24143 | the debug info. */ | |
24144 | if (sig_type == NULL) | |
24145 | { | |
b98664d3 | 24146 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
24147 | " from DIE at %s [in module %s]"), |
24148 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24149 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24150 | return build_error_marker_type (cu, die); |
24151 | } | |
24152 | ||
24153 | /* If we already know the type we're done. */ | |
976ca316 | 24154 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
24155 | if (type != nullptr) |
24156 | return type; | |
ac9ec31b DE |
24157 | |
24158 | type_cu = cu; | |
24159 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
24160 | if (type_die != NULL) | |
24161 | { | |
24162 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
24163 | is created. This is important, for example, because for c++ classes | |
24164 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
24165 | type = read_type_die (type_die, type_cu); | |
24166 | if (type == NULL) | |
24167 | { | |
b98664d3 | 24168 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
24169 | " referenced from DIE at %s [in module %s]"), |
24170 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24171 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24172 | type = build_error_marker_type (cu, die); |
24173 | } | |
24174 | } | |
24175 | else | |
24176 | { | |
b98664d3 | 24177 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
24178 | " from DIE at %s [in module %s]"), |
24179 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24180 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24181 | type = build_error_marker_type (cu, die); |
24182 | } | |
e286671b | 24183 | |
976ca316 | 24184 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
24185 | |
24186 | return type; | |
24187 | } | |
24188 | ||
24189 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
24190 | reading in and processing the type unit if necessary. */ | |
24191 | ||
24192 | static struct type * | |
ff39bb5e | 24193 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 24194 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
24195 | { |
24196 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 24197 | if (attr->form_is_ref ()) |
ac9ec31b DE |
24198 | { |
24199 | struct dwarf2_cu *type_cu = cu; | |
24200 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
24201 | ||
24202 | return read_type_die (type_die, type_cu); | |
24203 | } | |
24204 | else if (attr->form == DW_FORM_ref_sig8) | |
24205 | { | |
630ed6b9 | 24206 | return get_signatured_type (die, attr->as_signature (), cu); |
ac9ec31b DE |
24207 | } |
24208 | else | |
24209 | { | |
976ca316 | 24210 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24211 | |
b98664d3 | 24212 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
24213 | " at %s [in module %s]"), |
24214 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 24215 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24216 | return build_error_marker_type (cu, die); |
24217 | } | |
348e048f DE |
24218 | } |
24219 | ||
e5fe5e75 | 24220 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
24221 | |
24222 | static void | |
ab432490 SM |
24223 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
24224 | dwarf2_per_objfile *per_objfile) | |
348e048f | 24225 | { |
52dc124a | 24226 | struct signatured_type *sig_type; |
348e048f | 24227 | |
f4dc4d17 | 24228 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 24229 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 24230 | |
6721b2ec DE |
24231 | /* We have the per_cu, but we need the signatured_type. |
24232 | Fortunately this is an easy translation. */ | |
24233 | gdb_assert (per_cu->is_debug_types); | |
24234 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 24235 | |
7188ed02 | 24236 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24237 | |
ab432490 | 24238 | read_signatured_type (sig_type, per_objfile); |
348e048f | 24239 | |
7188ed02 | 24240 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
24241 | } |
24242 | ||
3019eac3 DE |
24243 | /* Read in a signatured type and build its CU and DIEs. |
24244 | If the type is a stub for the real type in a DWO file, | |
24245 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
24246 | |
24247 | static void | |
ab432490 SM |
24248 | read_signatured_type (signatured_type *sig_type, |
24249 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
24250 | { |
24251 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 24252 | |
3019eac3 | 24253 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 24254 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24255 | |
2e671100 | 24256 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
24257 | |
24258 | if (!reader.dummy_p) | |
24259 | { | |
24260 | struct dwarf2_cu *cu = reader.cu; | |
24261 | const gdb_byte *info_ptr = reader.info_ptr; | |
24262 | ||
24263 | gdb_assert (cu->die_hash == NULL); | |
24264 | cu->die_hash = | |
24265 | htab_create_alloc_ex (cu->header.length / 12, | |
24266 | die_hash, | |
24267 | die_eq, | |
24268 | NULL, | |
24269 | &cu->comp_unit_obstack, | |
24270 | hashtab_obstack_allocate, | |
24271 | dummy_obstack_deallocate); | |
24272 | ||
3e225074 | 24273 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
24274 | reader.comp_unit_die->child |
24275 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
24276 | reader.comp_unit_die); | |
24277 | cu->dies = reader.comp_unit_die; | |
24278 | /* comp_unit_die is not stored in die_hash, no need. */ | |
24279 | ||
24280 | /* We try not to read any attributes in this function, because | |
24281 | not all CUs needed for references have been loaded yet, and | |
24282 | symbol table processing isn't initialized. But we have to | |
24283 | set the CU language, or we won't be able to build types | |
24284 | correctly. Similarly, if we do not read the producer, we can | |
24285 | not apply producer-specific interpretation. */ | |
24286 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
24287 | |
24288 | reader.keep (); | |
c0ab21c2 TT |
24289 | } |
24290 | ||
7ee85ab1 | 24291 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
24292 | } |
24293 | ||
c906108c SS |
24294 | /* Decode simple location descriptions. |
24295 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
24296 | the location and return the value. If COMPUTED is non-null, it is |
24297 | set to true to indicate that decoding was successful, and false | |
24298 | otherwise. If COMPUTED is null, then this function may emit a | |
24299 | complaint. */ | |
c906108c SS |
24300 | |
24301 | static CORE_ADDR | |
7d79de9a | 24302 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 24303 | { |
5e22e966 | 24304 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
24305 | size_t i; |
24306 | size_t size = blk->size; | |
d521ce57 | 24307 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
24308 | CORE_ADDR stack[64]; |
24309 | int stacki; | |
24310 | unsigned int bytes_read, unsnd; | |
24311 | gdb_byte op; | |
c906108c | 24312 | |
7d79de9a TT |
24313 | if (computed != nullptr) |
24314 | *computed = false; | |
24315 | ||
21ae7a4d JK |
24316 | i = 0; |
24317 | stacki = 0; | |
24318 | stack[stacki] = 0; | |
24319 | stack[++stacki] = 0; | |
24320 | ||
24321 | while (i < size) | |
24322 | { | |
24323 | op = data[i++]; | |
24324 | switch (op) | |
24325 | { | |
24326 | case DW_OP_lit0: | |
24327 | case DW_OP_lit1: | |
24328 | case DW_OP_lit2: | |
24329 | case DW_OP_lit3: | |
24330 | case DW_OP_lit4: | |
24331 | case DW_OP_lit5: | |
24332 | case DW_OP_lit6: | |
24333 | case DW_OP_lit7: | |
24334 | case DW_OP_lit8: | |
24335 | case DW_OP_lit9: | |
24336 | case DW_OP_lit10: | |
24337 | case DW_OP_lit11: | |
24338 | case DW_OP_lit12: | |
24339 | case DW_OP_lit13: | |
24340 | case DW_OP_lit14: | |
24341 | case DW_OP_lit15: | |
24342 | case DW_OP_lit16: | |
24343 | case DW_OP_lit17: | |
24344 | case DW_OP_lit18: | |
24345 | case DW_OP_lit19: | |
24346 | case DW_OP_lit20: | |
24347 | case DW_OP_lit21: | |
24348 | case DW_OP_lit22: | |
24349 | case DW_OP_lit23: | |
24350 | case DW_OP_lit24: | |
24351 | case DW_OP_lit25: | |
24352 | case DW_OP_lit26: | |
24353 | case DW_OP_lit27: | |
24354 | case DW_OP_lit28: | |
24355 | case DW_OP_lit29: | |
24356 | case DW_OP_lit30: | |
24357 | case DW_OP_lit31: | |
24358 | stack[++stacki] = op - DW_OP_lit0; | |
24359 | break; | |
f1bea926 | 24360 | |
21ae7a4d JK |
24361 | case DW_OP_reg0: |
24362 | case DW_OP_reg1: | |
24363 | case DW_OP_reg2: | |
24364 | case DW_OP_reg3: | |
24365 | case DW_OP_reg4: | |
24366 | case DW_OP_reg5: | |
24367 | case DW_OP_reg6: | |
24368 | case DW_OP_reg7: | |
24369 | case DW_OP_reg8: | |
24370 | case DW_OP_reg9: | |
24371 | case DW_OP_reg10: | |
24372 | case DW_OP_reg11: | |
24373 | case DW_OP_reg12: | |
24374 | case DW_OP_reg13: | |
24375 | case DW_OP_reg14: | |
24376 | case DW_OP_reg15: | |
24377 | case DW_OP_reg16: | |
24378 | case DW_OP_reg17: | |
24379 | case DW_OP_reg18: | |
24380 | case DW_OP_reg19: | |
24381 | case DW_OP_reg20: | |
24382 | case DW_OP_reg21: | |
24383 | case DW_OP_reg22: | |
24384 | case DW_OP_reg23: | |
24385 | case DW_OP_reg24: | |
24386 | case DW_OP_reg25: | |
24387 | case DW_OP_reg26: | |
24388 | case DW_OP_reg27: | |
24389 | case DW_OP_reg28: | |
24390 | case DW_OP_reg29: | |
24391 | case DW_OP_reg30: | |
24392 | case DW_OP_reg31: | |
24393 | stack[++stacki] = op - DW_OP_reg0; | |
24394 | if (i < size) | |
7d79de9a TT |
24395 | { |
24396 | if (computed == nullptr) | |
24397 | dwarf2_complex_location_expr_complaint (); | |
24398 | else | |
24399 | return 0; | |
24400 | } | |
21ae7a4d | 24401 | break; |
c906108c | 24402 | |
21ae7a4d JK |
24403 | case DW_OP_regx: |
24404 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24405 | i += bytes_read; | |
24406 | stack[++stacki] = unsnd; | |
24407 | if (i < size) | |
7d79de9a TT |
24408 | { |
24409 | if (computed == nullptr) | |
24410 | dwarf2_complex_location_expr_complaint (); | |
24411 | else | |
24412 | return 0; | |
24413 | } | |
21ae7a4d | 24414 | break; |
c906108c | 24415 | |
21ae7a4d | 24416 | case DW_OP_addr: |
c8a7a66f TT |
24417 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
24418 | &bytes_read); | |
21ae7a4d JK |
24419 | i += bytes_read; |
24420 | break; | |
d53d4ac5 | 24421 | |
21ae7a4d JK |
24422 | case DW_OP_const1u: |
24423 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24424 | i += 1; | |
24425 | break; | |
24426 | ||
24427 | case DW_OP_const1s: | |
24428 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24429 | i += 1; | |
24430 | break; | |
24431 | ||
24432 | case DW_OP_const2u: | |
24433 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24434 | i += 2; | |
24435 | break; | |
24436 | ||
24437 | case DW_OP_const2s: | |
24438 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24439 | i += 2; | |
24440 | break; | |
d53d4ac5 | 24441 | |
21ae7a4d JK |
24442 | case DW_OP_const4u: |
24443 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24444 | i += 4; | |
24445 | break; | |
24446 | ||
24447 | case DW_OP_const4s: | |
24448 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24449 | i += 4; | |
24450 | break; | |
24451 | ||
585861ea JK |
24452 | case DW_OP_const8u: |
24453 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24454 | i += 8; | |
24455 | break; | |
24456 | ||
21ae7a4d JK |
24457 | case DW_OP_constu: |
24458 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24459 | &bytes_read); | |
24460 | i += bytes_read; | |
24461 | break; | |
24462 | ||
24463 | case DW_OP_consts: | |
24464 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24465 | i += bytes_read; | |
24466 | break; | |
24467 | ||
24468 | case DW_OP_dup: | |
24469 | stack[stacki + 1] = stack[stacki]; | |
24470 | stacki++; | |
24471 | break; | |
24472 | ||
24473 | case DW_OP_plus: | |
24474 | stack[stacki - 1] += stack[stacki]; | |
24475 | stacki--; | |
24476 | break; | |
24477 | ||
24478 | case DW_OP_plus_uconst: | |
24479 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24480 | &bytes_read); | |
24481 | i += bytes_read; | |
24482 | break; | |
24483 | ||
24484 | case DW_OP_minus: | |
24485 | stack[stacki - 1] -= stack[stacki]; | |
24486 | stacki--; | |
24487 | break; | |
24488 | ||
24489 | case DW_OP_deref: | |
24490 | /* If we're not the last op, then we definitely can't encode | |
24491 | this using GDB's address_class enum. This is valid for partial | |
24492 | global symbols, although the variable's address will be bogus | |
24493 | in the psymtab. */ | |
24494 | if (i < size) | |
7d79de9a TT |
24495 | { |
24496 | if (computed == nullptr) | |
24497 | dwarf2_complex_location_expr_complaint (); | |
24498 | else | |
24499 | return 0; | |
24500 | } | |
21ae7a4d JK |
24501 | break; |
24502 | ||
dda83cd7 | 24503 | case DW_OP_GNU_push_tls_address: |
4aa4e28b | 24504 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24505 | /* The top of the stack has the offset from the beginning |
24506 | of the thread control block at which the variable is located. */ | |
24507 | /* Nothing should follow this operator, so the top of stack would | |
24508 | be returned. */ | |
24509 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24510 | address will be bogus in the psymtab. Make it always at least |
24511 | non-zero to not look as a variable garbage collected by linker | |
24512 | which have DW_OP_addr 0. */ | |
21ae7a4d | 24513 | if (i < size) |
7d79de9a TT |
24514 | { |
24515 | if (computed == nullptr) | |
24516 | dwarf2_complex_location_expr_complaint (); | |
24517 | else | |
24518 | return 0; | |
24519 | } | |
585861ea | 24520 | stack[stacki]++; |
dda83cd7 | 24521 | break; |
21ae7a4d JK |
24522 | |
24523 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
24524 | if (computed != nullptr) |
24525 | return 0; | |
21ae7a4d JK |
24526 | break; |
24527 | ||
336d760d | 24528 | case DW_OP_addrx: |
3019eac3 | 24529 | case DW_OP_GNU_addr_index: |
49f6c839 | 24530 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24531 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24532 | &bytes_read); | |
24533 | i += bytes_read; | |
24534 | break; | |
24535 | ||
21ae7a4d | 24536 | default: |
7d79de9a TT |
24537 | if (computed == nullptr) |
24538 | { | |
24539 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 24540 | |
7d79de9a TT |
24541 | if (name) |
24542 | complaint (_("unsupported stack op: '%s'"), | |
24543 | name); | |
24544 | else | |
24545 | complaint (_("unsupported stack op: '%02x'"), | |
24546 | op); | |
24547 | } | |
21ae7a4d JK |
24548 | |
24549 | return (stack[stacki]); | |
d53d4ac5 | 24550 | } |
3c6e0cb3 | 24551 | |
21ae7a4d | 24552 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
dda83cd7 | 24553 | outside of the allocated space. Also enforce minimum>0. */ |
21ae7a4d JK |
24554 | if (stacki >= ARRAY_SIZE (stack) - 1) |
24555 | { | |
7d79de9a TT |
24556 | if (computed == nullptr) |
24557 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
24558 | return 0; |
24559 | } | |
24560 | ||
24561 | if (stacki <= 0) | |
24562 | { | |
7d79de9a TT |
24563 | if (computed == nullptr) |
24564 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
24565 | return 0; |
24566 | } | |
24567 | } | |
7d79de9a TT |
24568 | |
24569 | if (computed != nullptr) | |
24570 | *computed = true; | |
21ae7a4d | 24571 | return (stack[stacki]); |
c906108c SS |
24572 | } |
24573 | ||
24574 | /* memory allocation interface */ | |
24575 | ||
c906108c | 24576 | static struct dwarf_block * |
7b5a2f43 | 24577 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24578 | { |
8d749320 | 24579 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24580 | } |
24581 | ||
c906108c | 24582 | static struct die_info * |
b60c80d6 | 24583 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24584 | { |
24585 | struct die_info *die; | |
b60c80d6 DJ |
24586 | size_t size = sizeof (struct die_info); |
24587 | ||
24588 | if (num_attrs > 1) | |
24589 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24590 | |
b60c80d6 | 24591 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24592 | memset (die, 0, sizeof (struct die_info)); |
24593 | return (die); | |
24594 | } | |
2e276125 JB |
24595 | |
24596 | \f | |
a036ba48 | 24597 | |
c90ec28a | 24598 | /* Macro support. */ |
cf2c3c16 | 24599 | |
9eac9650 TT |
24600 | /* An overload of dwarf_decode_macros that finds the correct section |
24601 | and ensures it is read in before calling the other overload. */ | |
24602 | ||
24603 | static void | |
24604 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
24605 | int section_is_gnu) | |
24606 | { | |
976ca316 SM |
24607 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24608 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 24609 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
24610 | unsigned int offset_size = cu->header.offset_size; |
24611 | struct dwarf2_section_info *section; | |
24612 | const char *section_name; | |
24613 | ||
24614 | if (cu->dwo_unit != nullptr) | |
24615 | { | |
24616 | if (section_is_gnu) | |
24617 | { | |
24618 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24619 | section_name = ".debug_macro.dwo"; | |
24620 | } | |
24621 | else | |
24622 | { | |
24623 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24624 | section_name = ".debug_macinfo.dwo"; | |
24625 | } | |
24626 | } | |
24627 | else | |
24628 | { | |
24629 | if (section_is_gnu) | |
24630 | { | |
976ca316 | 24631 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
24632 | section_name = ".debug_macro"; |
24633 | } | |
24634 | else | |
24635 | { | |
976ca316 | 24636 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
24637 | section_name = ".debug_macinfo"; |
24638 | } | |
24639 | } | |
24640 | ||
24641 | section->read (objfile); | |
24642 | if (section->buffer == nullptr) | |
24643 | { | |
24644 | complaint (_("missing %s section"), section_name); | |
24645 | return; | |
24646 | } | |
24647 | ||
24648 | buildsym_compunit *builder = cu->get_builder (); | |
24649 | ||
048fde1e | 24650 | struct dwarf2_section_info *str_offsets_section; |
24651 | struct dwarf2_section_info *str_section; | |
24652 | ULONGEST str_offsets_base; | |
24653 | ||
24654 | if (cu->dwo_unit != nullptr) | |
24655 | { | |
24656 | str_offsets_section = &cu->dwo_unit->dwo_file | |
24657 | ->sections.str_offsets; | |
24658 | str_section = &cu->dwo_unit->dwo_file->sections.str; | |
24659 | str_offsets_base = cu->header.addr_size; | |
24660 | } | |
24661 | else | |
24662 | { | |
24663 | str_offsets_section = &per_objfile->per_bfd->str_offsets; | |
24664 | str_section = &per_objfile->per_bfd->str; | |
24665 | str_offsets_base = *cu->str_offsets_base; | |
24666 | } | |
24667 | ||
976ca316 | 24668 | dwarf_decode_macros (per_objfile, builder, section, lh, |
048fde1e | 24669 | offset_size, offset, str_section, str_offsets_section, |
24670 | str_offsets_base, section_is_gnu); | |
9eac9650 TT |
24671 | } |
24672 | ||
3019eac3 DE |
24673 | /* Return the .debug_loc section to use for CU. |
24674 | For DWO files use .debug_loc.dwo. */ | |
24675 | ||
24676 | static struct dwarf2_section_info * | |
24677 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24678 | { | |
976ca316 | 24679 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24680 | |
3019eac3 | 24681 | if (cu->dwo_unit) |
43988095 JK |
24682 | { |
24683 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 24684 | |
43988095 JK |
24685 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
24686 | } | |
976ca316 SM |
24687 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
24688 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
24689 | } |
24690 | ||
d0ce17d8 CT |
24691 | /* Return the .debug_rnglists section to use for CU. */ |
24692 | static struct dwarf2_section_info * | |
24693 | cu_debug_rnglists_section (struct dwarf2_cu *cu, dwarf_tag tag) | |
24694 | { | |
24695 | if (cu->header.version < 5) | |
24696 | error (_(".debug_rnglists section cannot be used in DWARF %d"), | |
24697 | cu->header.version); | |
24698 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
24699 | ||
24700 | /* Make sure we read the .debug_rnglists section from the file that | |
24701 | contains the DW_AT_ranges attribute we are reading. Normally that | |
24702 | would be the .dwo file, if there is one. However for DW_TAG_compile_unit | |
24703 | or DW_TAG_skeleton unit, we always want to read from objfile/linked | |
24704 | program. */ | |
24705 | if (cu->dwo_unit != nullptr | |
24706 | && tag != DW_TAG_compile_unit | |
24707 | && tag != DW_TAG_skeleton_unit) | |
24708 | { | |
24709 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24710 | ||
24711 | if (sections->rnglists.size > 0) | |
24712 | return §ions->rnglists; | |
24713 | else | |
24714 | error (_(".debug_rnglists section is missing from .dwo file.")); | |
24715 | } | |
24716 | return &dwarf2_per_objfile->per_bfd->rnglists; | |
24717 | } | |
24718 | ||
8cf6f0b1 TT |
24719 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24720 | ||
24721 | static void | |
24722 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24723 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24724 | const struct attribute *attr) |
8cf6f0b1 | 24725 | { |
976ca316 | 24726 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
24727 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24728 | ||
976ca316 | 24729 | section->read (per_objfile->objfile); |
8cf6f0b1 | 24730 | |
976ca316 | 24731 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
24732 | baton->per_cu = cu->per_cu; |
24733 | gdb_assert (baton->per_cu); | |
24734 | /* We don't know how long the location list is, but make sure we | |
24735 | don't run off the edge of the section. */ | |
d4df075e TT |
24736 | baton->size = section->size - attr->as_unsigned (); |
24737 | baton->data = section->buffer + attr->as_unsigned (); | |
2b24b6e4 TT |
24738 | if (cu->base_address.has_value ()) |
24739 | baton->base_address = *cu->base_address; | |
24740 | else | |
24741 | baton->base_address = 0; | |
f664829e | 24742 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24743 | } |
24744 | ||
4c2df51b | 24745 | static void |
ff39bb5e | 24746 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24747 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24748 | { |
976ca316 SM |
24749 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24750 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 24751 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24752 | |
cd6c91b4 | 24753 | if (attr->form_is_section_offset () |
3019eac3 | 24754 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24755 | the section. If so, fall through to the complaint in the |
24756 | other branch. */ | |
d4df075e | 24757 | && attr->as_unsigned () < section->get_size (objfile)) |
4c2df51b | 24758 | { |
0d53c4c4 | 24759 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24760 | |
8d749320 | 24761 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24762 | |
8cf6f0b1 | 24763 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24764 | |
2b24b6e4 | 24765 | if (!cu->base_address.has_value ()) |
b98664d3 | 24766 | complaint (_("Location list used without " |
3e43a32a | 24767 | "specifying the CU base address.")); |
4c2df51b | 24768 | |
f1e6e072 TT |
24769 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24770 | ? dwarf2_loclist_block_index | |
24771 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24772 | SYMBOL_LOCATION_BATON (sym) = baton; |
24773 | } | |
24774 | else | |
24775 | { | |
24776 | struct dwarf2_locexpr_baton *baton; | |
24777 | ||
8d749320 | 24778 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 24779 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
24780 | baton->per_cu = cu->per_cu; |
24781 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24782 | |
4fc6c0d5 | 24783 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24784 | { |
24785 | /* Note that we're just copying the block's data pointer | |
24786 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24787 | info_buffer for SYM's objfile; right now we never release |
24788 | that buffer, but when we do clean up properly this may | |
24789 | need to change. */ | |
9d2246fc TT |
24790 | struct dwarf_block *block = attr->as_block (); |
24791 | baton->size = block->size; | |
24792 | baton->data = block->data; | |
0d53c4c4 DJ |
24793 | } |
24794 | else | |
24795 | { | |
24796 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24797 | sym->natural_name ()); |
0d53c4c4 | 24798 | baton->size = 0; |
0d53c4c4 | 24799 | } |
6e70227d | 24800 | |
f1e6e072 TT |
24801 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24802 | ? dwarf2_locexpr_block_index | |
24803 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24804 | SYMBOL_LOCATION_BATON (sym) = baton; |
24805 | } | |
4c2df51b | 24806 | } |
6502dd73 | 24807 | |
2e6a9f79 | 24808 | /* See read.h. */ |
96408a79 | 24809 | |
2e6a9f79 SM |
24810 | const comp_unit_head * |
24811 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 24812 | { |
2e6a9f79 SM |
24813 | if (!m_header_read_in) |
24814 | { | |
24815 | const gdb_byte *info_ptr | |
24816 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 24817 | |
2e6a9f79 | 24818 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 24819 | |
2e6a9f79 SM |
24820 | read_comp_unit_head (&m_header, info_ptr, this->section, |
24821 | rcuh_kind::COMPILE); | |
24822 | } | |
96408a79 | 24823 | |
2e6a9f79 | 24824 | return &m_header; |
96408a79 SA |
24825 | } |
24826 | ||
09ba997f | 24827 | /* See read.h. */ |
ae0d2f24 | 24828 | |
98714339 | 24829 | int |
09ba997f | 24830 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 24831 | { |
2e6a9f79 | 24832 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
24833 | } |
24834 | ||
09ba997f | 24835 | /* See read.h. */ |
9eae7c52 TT |
24836 | |
24837 | int | |
09ba997f | 24838 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 24839 | { |
2e6a9f79 | 24840 | return this->get_header ()->offset_size; |
96408a79 SA |
24841 | } |
24842 | ||
09ba997f | 24843 | /* See read.h. */ |
96408a79 SA |
24844 | |
24845 | int | |
09ba997f | 24846 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 24847 | { |
2e6a9f79 | 24848 | const comp_unit_head *header = this->get_header (); |
96408a79 | 24849 | |
2e6a9f79 SM |
24850 | if (header->version == 2) |
24851 | return header->addr_size; | |
96408a79 | 24852 | else |
2e6a9f79 | 24853 | return header->offset_size; |
181cebd4 JK |
24854 | } |
24855 | ||
09ba997f | 24856 | /* See read.h. */ |
9aa1f1e3 | 24857 | |
09ba997f | 24858 | struct type * |
293e7e51 | 24859 | dwarf2_cu::addr_type () const |
9a49df9d | 24860 | { |
293e7e51 | 24861 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
24862 | struct type *void_type = objfile_type (objfile)->builtin_void; |
24863 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 24864 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
24865 | |
24866 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24867 | return addr_type; | |
24868 | ||
c6d940a9 | 24869 | addr_type = addr_sized_int_type (addr_type->is_unsigned ()); |
9a49df9d AB |
24870 | return addr_type; |
24871 | } | |
24872 | ||
22b6cd70 TT |
24873 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
24874 | the index of the result, and that searches a vector. It will | |
24875 | return a result even if the offset in question does not actually | |
24876 | occur in any CU. This is separate so that it can be unit | |
24877 | tested. */ | |
ae038cb0 | 24878 | |
22b6cd70 TT |
24879 | static int |
24880 | dwarf2_find_containing_comp_unit | |
24881 | (sect_offset sect_off, | |
24882 | unsigned int offset_in_dwz, | |
24883 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 24884 | { |
ae038cb0 DJ |
24885 | int low, high; |
24886 | ||
ae038cb0 | 24887 | low = 0; |
22b6cd70 | 24888 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
24889 | while (high > low) |
24890 | { | |
36586728 | 24891 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24892 | int mid = low + (high - low) / 2; |
9a619af0 | 24893 | |
22b6cd70 | 24894 | mid_cu = all_comp_units[mid]; |
36586728 | 24895 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24896 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 24897 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
24898 | high = mid; |
24899 | else | |
24900 | low = mid + 1; | |
24901 | } | |
24902 | gdb_assert (low == high); | |
22b6cd70 TT |
24903 | return low; |
24904 | } | |
24905 | ||
24906 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
24907 | the DIE at OFFSET. Raises an error on failure. */ | |
24908 | ||
24909 | static struct dwarf2_per_cu_data * | |
24910 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
24911 | unsigned int offset_in_dwz, | |
976ca316 | 24912 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 24913 | { |
976ca316 SM |
24914 | int low = dwarf2_find_containing_comp_unit |
24915 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
24916 | dwarf2_per_cu_data *this_cu = per_objfile->per_bfd->all_comp_units[low]; | |
22b6cd70 | 24917 | |
45b8ae0c | 24918 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24919 | { |
36586728 | 24920 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24921 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24922 | "offset %s [in module %s]"), |
24923 | sect_offset_str (sect_off), | |
976ca316 | 24924 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 24925 | |
976ca316 | 24926 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 24927 | <= sect_off); |
976ca316 | 24928 | return per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
24929 | } |
24930 | else | |
24931 | { | |
976ca316 | 24932 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 24933 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24934 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24935 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24936 | return this_cu; |
24937 | } | |
24938 | } | |
24939 | ||
22b6cd70 TT |
24940 | #if GDB_SELF_TEST |
24941 | ||
24942 | namespace selftests { | |
24943 | namespace find_containing_comp_unit { | |
24944 | ||
24945 | static void | |
24946 | run_test () | |
24947 | { | |
24948 | struct dwarf2_per_cu_data one {}; | |
24949 | struct dwarf2_per_cu_data two {}; | |
24950 | struct dwarf2_per_cu_data three {}; | |
24951 | struct dwarf2_per_cu_data four {}; | |
24952 | ||
24953 | one.length = 5; | |
24954 | two.sect_off = sect_offset (one.length); | |
24955 | two.length = 7; | |
24956 | ||
24957 | three.length = 5; | |
24958 | three.is_dwz = 1; | |
24959 | four.sect_off = sect_offset (three.length); | |
24960 | four.length = 7; | |
24961 | four.is_dwz = 1; | |
24962 | ||
24963 | std::vector<dwarf2_per_cu_data *> units; | |
24964 | units.push_back (&one); | |
24965 | units.push_back (&two); | |
24966 | units.push_back (&three); | |
24967 | units.push_back (&four); | |
24968 | ||
24969 | int result; | |
24970 | ||
24971 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
24972 | SELF_CHECK (units[result] == &one); | |
24973 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
24974 | SELF_CHECK (units[result] == &one); | |
24975 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
24976 | SELF_CHECK (units[result] == &two); | |
24977 | ||
24978 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
24979 | SELF_CHECK (units[result] == &three); | |
24980 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
24981 | SELF_CHECK (units[result] == &three); | |
24982 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
24983 | SELF_CHECK (units[result] == &four); | |
24984 | } | |
24985 | ||
24986 | } | |
24987 | } | |
24988 | ||
24989 | #endif /* GDB_SELF_TEST */ | |
24990 | ||
9e021579 | 24991 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 24992 | |
9e021579 SM |
24993 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
24994 | dwarf2_per_objfile *per_objfile) | |
24995 | : per_cu (per_cu), | |
24996 | per_objfile (per_objfile), | |
9068261f AB |
24997 | mark (false), |
24998 | has_loclist (false), | |
24999 | checked_producer (false), | |
25000 | producer_is_gxx_lt_4_6 (false), | |
25001 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 25002 | producer_is_icc (false), |
9068261f | 25003 | producer_is_icc_lt_14 (false), |
c258c396 | 25004 | producer_is_codewarrior (false), |
9068261f | 25005 | processing_has_namespace_info (false) |
93311388 | 25006 | { |
9816fde3 JK |
25007 | } |
25008 | ||
25009 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25010 | ||
25011 | static void | |
95554aad TT |
25012 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25013 | enum language pretend_language) | |
9816fde3 JK |
25014 | { |
25015 | struct attribute *attr; | |
25016 | ||
25017 | /* Set the language we're debugging. */ | |
25018 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 25019 | if (attr != nullptr) |
529908cb | 25020 | set_cu_language (attr->constant_value (0), cu); |
9816fde3 | 25021 | else |
9cded63f | 25022 | { |
95554aad | 25023 | cu->language = pretend_language; |
9cded63f TT |
25024 | cu->language_defn = language_def (cu->language); |
25025 | } | |
dee91e82 | 25026 | |
7d45c7c3 | 25027 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25028 | } |
25029 | ||
7188ed02 | 25030 | /* See read.h. */ |
ae038cb0 | 25031 | |
7188ed02 SM |
25032 | dwarf2_cu * |
25033 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 25034 | { |
7188ed02 SM |
25035 | auto it = m_dwarf2_cus.find (per_cu); |
25036 | if (it == m_dwarf2_cus.end ()) | |
25037 | return nullptr; | |
ae038cb0 | 25038 | |
7188ed02 SM |
25039 | return it->second; |
25040 | } | |
25041 | ||
25042 | /* See read.h. */ | |
25043 | ||
25044 | void | |
25045 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
25046 | { | |
25047 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
25048 | ||
25049 | m_dwarf2_cus[per_cu] = cu; | |
25050 | } | |
25051 | ||
25052 | /* See read.h. */ | |
25053 | ||
25054 | void | |
25055 | dwarf2_per_objfile::age_comp_units () | |
25056 | { | |
17e593e9 SM |
25057 | dwarf_read_debug_printf_v ("running"); |
25058 | ||
7188ed02 SM |
25059 | /* Start by clearing all marks. */ |
25060 | for (auto pair : m_dwarf2_cus) | |
25061 | pair.second->mark = false; | |
25062 | ||
25063 | /* Traverse all CUs, mark them and their dependencies if used recently | |
25064 | enough. */ | |
25065 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 25066 | { |
7188ed02 SM |
25067 | dwarf2_cu *cu = pair.second; |
25068 | ||
25069 | cu->last_used++; | |
25070 | if (cu->last_used <= dwarf_max_cache_age) | |
25071 | dwarf2_mark (cu); | |
ae038cb0 DJ |
25072 | } |
25073 | ||
7188ed02 SM |
25074 | /* Delete all CUs still not marked. */ |
25075 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 25076 | { |
7188ed02 | 25077 | dwarf2_cu *cu = it->second; |
ae038cb0 | 25078 | |
7188ed02 | 25079 | if (!cu->mark) |
ae038cb0 | 25080 | { |
17e593e9 SM |
25081 | dwarf_read_debug_printf_v ("deleting old CU %s", |
25082 | sect_offset_str (cu->per_cu->sect_off)); | |
7188ed02 SM |
25083 | delete cu; |
25084 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
25085 | } |
25086 | else | |
7188ed02 | 25087 | it++; |
ae038cb0 DJ |
25088 | } |
25089 | } | |
25090 | ||
7188ed02 | 25091 | /* See read.h. */ |
ae038cb0 | 25092 | |
7188ed02 SM |
25093 | void |
25094 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 25095 | { |
7188ed02 SM |
25096 | auto it = m_dwarf2_cus.find (per_cu); |
25097 | if (it == m_dwarf2_cus.end ()) | |
25098 | return; | |
ae038cb0 | 25099 | |
7188ed02 | 25100 | delete it->second; |
ae038cb0 | 25101 | |
7188ed02 SM |
25102 | m_dwarf2_cus.erase (it); |
25103 | } | |
ae038cb0 | 25104 | |
7188ed02 SM |
25105 | dwarf2_per_objfile::~dwarf2_per_objfile () |
25106 | { | |
25107 | remove_all_cus (); | |
ae038cb0 DJ |
25108 | } |
25109 | ||
dee91e82 DE |
25110 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25111 | We store these in a hash table separate from the DIEs, and preserve them | |
25112 | when the DIEs are flushed out of cache. | |
25113 | ||
25114 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25115 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25116 | or the type may come from a DWO file. Furthermore, while it's more logical |
25117 | to use per_cu->section+offset, with Fission the section with the data is in | |
25118 | the DWO file but we don't know that section at the point we need it. | |
25119 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25120 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25121 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25122 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25123 | |
dee91e82 | 25124 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25125 | { |
dee91e82 | 25126 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25127 | sect_offset sect_off; |
1c379e20 DJ |
25128 | struct type *type; |
25129 | }; | |
25130 | ||
dee91e82 | 25131 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25132 | |
25133 | static hashval_t | |
dee91e82 | 25134 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25135 | { |
9a3c8263 SM |
25136 | const struct dwarf2_per_cu_offset_and_type *ofs |
25137 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25138 | |
9c541725 | 25139 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25140 | } |
25141 | ||
dee91e82 | 25142 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25143 | |
25144 | static int | |
dee91e82 | 25145 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25146 | { |
9a3c8263 SM |
25147 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25148 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25149 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25150 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25151 | |
dee91e82 | 25152 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25153 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25154 | } |
25155 | ||
25156 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25157 | table if necessary. For convenience, return TYPE. |
25158 | ||
25159 | The DIEs reading must have careful ordering to: | |
85102364 | 25160 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
25161 | reading current DIE. |
25162 | * Not trying to dereference contents of still incompletely read in types | |
25163 | while reading in other DIEs. | |
25164 | * Enable referencing still incompletely read in types just by a pointer to | |
25165 | the type without accessing its fields. | |
25166 | ||
25167 | Therefore caller should follow these rules: | |
25168 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25169 | before building the type and calling set_die_type. | |
e71ec853 | 25170 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25171 | possible before fetching more types to complete the current type. |
25172 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25173 | |
f792889a | 25174 | static struct type * |
57567375 TT |
25175 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
25176 | bool skip_data_location) | |
1c379e20 | 25177 | { |
976ca316 | 25178 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 25179 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 25180 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
25181 | struct attribute *attr; |
25182 | struct dynamic_prop prop; | |
1c379e20 | 25183 | |
b4ba55a1 JB |
25184 | /* For Ada types, make sure that the gnat-specific data is always |
25185 | initialized (if not already set). There are a few types where | |
25186 | we should not be doing so, because the type-specific area is | |
25187 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25188 | where the type-specific area is used to store the floatformat). | |
25189 | But this is not a problem, because the gnat-specific information | |
25190 | is actually not needed for these types. */ | |
25191 | if (need_gnat_info (cu) | |
78134374 SM |
25192 | && type->code () != TYPE_CODE_FUNC |
25193 | && type->code () != TYPE_CODE_FLT | |
25194 | && type->code () != TYPE_CODE_METHODPTR | |
25195 | && type->code () != TYPE_CODE_MEMBERPTR | |
25196 | && type->code () != TYPE_CODE_METHOD | |
09584414 | 25197 | && type->code () != TYPE_CODE_FIXED_POINT |
b4ba55a1 JB |
25198 | && !HAVE_GNAT_AUX_INFO (type)) |
25199 | INIT_GNAT_SPECIFIC (type); | |
25200 | ||
3f2f83dd KB |
25201 | /* Read DW_AT_allocated and set in type. */ |
25202 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
9cdf9820 | 25203 | if (attr != NULL) |
3f2f83dd | 25204 | { |
293e7e51 | 25205 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25206 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25207 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd | 25208 | } |
3f2f83dd KB |
25209 | |
25210 | /* Read DW_AT_associated and set in type. */ | |
25211 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
9cdf9820 | 25212 | if (attr != NULL) |
3f2f83dd | 25213 | { |
293e7e51 | 25214 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25215 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25216 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd | 25217 | } |
3f2f83dd | 25218 | |
3cdcd0ce | 25219 | /* Read DW_AT_data_location and set in type. */ |
57567375 TT |
25220 | if (!skip_data_location) |
25221 | { | |
25222 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25223 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) | |
25224 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); | |
25225 | } | |
3cdcd0ce | 25226 | |
976ca316 SM |
25227 | if (per_objfile->die_type_hash == NULL) |
25228 | per_objfile->die_type_hash | |
0335378b TT |
25229 | = htab_up (htab_create_alloc (127, |
25230 | per_cu_offset_and_type_hash, | |
25231 | per_cu_offset_and_type_eq, | |
25232 | NULL, xcalloc, xfree)); | |
1c379e20 | 25233 | |
dee91e82 | 25234 | ofs.per_cu = cu->per_cu; |
9c541725 | 25235 | ofs.sect_off = die->sect_off; |
1c379e20 | 25236 | ofs.type = type; |
dee91e82 | 25237 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 25238 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 25239 | if (*slot) |
b98664d3 | 25240 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25241 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25242 | *slot = XOBNEW (&objfile->objfile_obstack, |
25243 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25244 | **slot = ofs; |
f792889a | 25245 | return type; |
1c379e20 DJ |
25246 | } |
25247 | ||
9c541725 | 25248 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25249 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25250 | |
25251 | static struct type * | |
9c541725 | 25252 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 25253 | dwarf2_per_cu_data *per_cu, |
976ca316 | 25254 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 25255 | { |
dee91e82 | 25256 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 25257 | |
976ca316 | 25258 | if (per_objfile->die_type_hash == NULL) |
f792889a | 25259 | return NULL; |
1c379e20 | 25260 | |
dee91e82 | 25261 | ofs.per_cu = per_cu; |
9c541725 | 25262 | ofs.sect_off = sect_off; |
9a3c8263 | 25263 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 25264 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
25265 | if (slot) |
25266 | return slot->type; | |
25267 | else | |
25268 | return NULL; | |
25269 | } | |
25270 | ||
02142a6c | 25271 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25272 | or return NULL if DIE does not have a saved type. */ |
25273 | ||
25274 | static struct type * | |
25275 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25276 | { | |
aa66c379 | 25277 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
25278 | } |
25279 | ||
10b3939b DJ |
25280 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25281 | ||
25282 | static void | |
25283 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25284 | struct dwarf2_per_cu_data *ref_per_cu) | |
25285 | { | |
25286 | void **slot; | |
25287 | ||
25288 | if (cu->dependencies == NULL) | |
25289 | cu->dependencies | |
25290 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25291 | NULL, &cu->comp_unit_obstack, | |
25292 | hashtab_obstack_allocate, | |
25293 | dummy_obstack_deallocate); | |
25294 | ||
25295 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25296 | if (*slot == NULL) | |
25297 | *slot = ref_per_cu; | |
25298 | } | |
1c379e20 | 25299 | |
f504f079 DE |
25300 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25301 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
25302 | cache that we must keep because we are keeping CU. |
25303 | ||
25304 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 25305 | |
10b3939b DJ |
25306 | static int |
25307 | dwarf2_mark_helper (void **slot, void *data) | |
25308 | { | |
7188ed02 SM |
25309 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
25310 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
25311 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
25312 | |
25313 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25314 | reading of the chain. As such dependencies remain valid it is not much | |
25315 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 25316 | if (cu == nullptr) |
d07ed419 JK |
25317 | return 1; |
25318 | ||
7188ed02 | 25319 | if (cu->mark) |
10b3939b | 25320 | return 1; |
10b3939b | 25321 | |
7188ed02 SM |
25322 | cu->mark = true; |
25323 | ||
25324 | if (cu->dependencies != nullptr) | |
25325 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
25326 | |
25327 | return 1; | |
25328 | } | |
25329 | ||
f504f079 DE |
25330 | /* Set the mark field in CU and in every other compilation unit in the |
25331 | cache that we must keep because we are keeping CU. */ | |
25332 | ||
ae038cb0 DJ |
25333 | static void |
25334 | dwarf2_mark (struct dwarf2_cu *cu) | |
25335 | { | |
25336 | if (cu->mark) | |
25337 | return; | |
7188ed02 | 25338 | |
9068261f | 25339 | cu->mark = true; |
ae038cb0 | 25340 | |
7188ed02 SM |
25341 | if (cu->dependencies != nullptr) |
25342 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
25343 | } |
25344 | ||
72bf9492 DJ |
25345 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25346 | is its offset in .debug_info for this objfile. */ | |
25347 | ||
25348 | static hashval_t | |
25349 | partial_die_hash (const void *item) | |
25350 | { | |
9a3c8263 SM |
25351 | const struct partial_die_info *part_die |
25352 | = (const struct partial_die_info *) item; | |
9a619af0 | 25353 | |
9c541725 | 25354 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25355 | } |
25356 | ||
25357 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25358 | are equal if they have the same offset. */ | |
25359 | ||
25360 | static int | |
25361 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25362 | { | |
9a3c8263 SM |
25363 | const struct partial_die_info *part_die_lhs |
25364 | = (const struct partial_die_info *) item_lhs; | |
25365 | const struct partial_die_info *part_die_rhs | |
25366 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25367 | |
9c541725 | 25368 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25369 | } |
25370 | ||
3c3bb058 AB |
25371 | struct cmd_list_element *set_dwarf_cmdlist; |
25372 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 25373 | |
9291a0cd | 25374 | static void |
cd4fb1b2 SM |
25375 | show_check_physname (struct ui_file *file, int from_tty, |
25376 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25377 | { |
cd4fb1b2 SM |
25378 | fprintf_filtered (file, |
25379 | _("Whether to check \"physname\" is %s.\n"), | |
25380 | value); | |
9291a0cd TT |
25381 | } |
25382 | ||
6c265988 | 25383 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 25384 | void |
6c265988 | 25385 | _initialize_dwarf2_read () |
9291a0cd | 25386 | { |
0743fc83 | 25387 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 25388 | Set DWARF specific variables.\n\ |
590042fc | 25389 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
25390 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
25391 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25392 | |
0743fc83 | 25393 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
25394 | Show DWARF specific variables.\n\ |
25395 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
25396 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
25397 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25398 | |
cd4fb1b2 SM |
25399 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25400 | &dwarf_max_cache_age, _("\ | |
25401 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25402 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25403 | A higher limit means that cached compilation units will be stored\n\ | |
25404 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25405 | caching, which can slow down startup."), | |
25406 | NULL, | |
25407 | show_dwarf_max_cache_age, | |
25408 | &set_dwarf_cmdlist, | |
25409 | &show_dwarf_cmdlist); | |
156942c7 | 25410 | |
cd4fb1b2 SM |
25411 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25412 | Set debugging of the DWARF reader."), _("\ | |
25413 | Show debugging of the DWARF reader."), _("\ | |
25414 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25415 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25416 | information. A value greater than 1 provides more verbose information."), | |
25417 | NULL, | |
25418 | NULL, | |
25419 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25420 | |
cd4fb1b2 SM |
25421 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25422 | Set debugging of the DWARF DIE reader."), _("\ | |
25423 | Show debugging of the DWARF DIE reader."), _("\ | |
25424 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25425 | The value is the maximum depth to print."), | |
25426 | NULL, | |
25427 | NULL, | |
25428 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25429 | |
cd4fb1b2 SM |
25430 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25431 | Set debugging of the dwarf line reader."), _("\ | |
25432 | Show debugging of the dwarf line reader."), _("\ | |
25433 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25434 | A value of 1 (one) provides basic information.\n\ | |
25435 | A value greater than 1 provides more verbose information."), | |
25436 | NULL, | |
25437 | NULL, | |
25438 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25439 | |
cd4fb1b2 SM |
25440 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25441 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25442 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25443 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25444 | the demangler."), | |
25445 | NULL, show_check_physname, | |
25446 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25447 | |
e615022a DE |
25448 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25449 | no_class, &use_deprecated_index_sections, _("\ | |
25450 | Set whether to use deprecated gdb_index sections."), _("\ | |
25451 | Show whether to use deprecated gdb_index sections."), _("\ | |
25452 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25453 | Normally they are ignored either because of a missing feature or\n\ | |
25454 | performance issue.\n\ | |
25455 | Warning: This option must be enabled before gdb reads the file."), | |
25456 | NULL, | |
25457 | NULL, | |
25458 | &setlist, &showlist); | |
25459 | ||
f1e6e072 TT |
25460 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25461 | &dwarf2_locexpr_funcs); | |
25462 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25463 | &dwarf2_loclist_funcs); | |
25464 | ||
25465 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25466 | &dwarf2_block_frame_base_locexpr_funcs); | |
25467 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25468 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25469 | |
25470 | #if GDB_SELF_TEST | |
25471 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25472 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
25473 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
25474 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 25475 | #endif |
6502dd73 | 25476 | } |