Commit | Line | Data |
---|---|---|
c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
3666a048 | 3 | Copyright (C) 1994-2021 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c | 31 | #include "defs.h" |
82ca8957 | 32 | #include "dwarf2/read.h" |
3054dd54 | 33 | #include "dwarf2/abbrev.h" |
162dce55 | 34 | #include "dwarf2/attribute.h" |
4057dfde | 35 | #include "dwarf2/comp-unit.h" |
82ca8957 TT |
36 | #include "dwarf2/index-cache.h" |
37 | #include "dwarf2/index-common.h" | |
f4382c45 | 38 | #include "dwarf2/leb.h" |
8fdd972c | 39 | #include "dwarf2/line-header.h" |
9fda78b6 | 40 | #include "dwarf2/dwz.h" |
c90ec28a | 41 | #include "dwarf2/macro.h" |
c2d50fd0 | 42 | #include "dwarf2/die.h" |
c2a62a3d | 43 | #include "dwarf2/sect-names.h" |
2b2558bf | 44 | #include "dwarf2/stringify.h" |
70182375 | 45 | #include "dwarf2/public.h" |
4de283e4 TT |
46 | #include "bfd.h" |
47 | #include "elf-bfd.h" | |
48 | #include "symtab.h" | |
49 | #include "gdbtypes.h" | |
50 | #include "objfiles.h" | |
d55e5aa6 | 51 | #include "dwarf2.h" |
4de283e4 TT |
52 | #include "buildsym.h" |
53 | #include "demangle.h" | |
54 | #include "gdb-demangle.h" | |
4de283e4 | 55 | #include "filenames.h" /* for DOSish file names */ |
4de283e4 TT |
56 | #include "language.h" |
57 | #include "complaints.h" | |
82ca8957 TT |
58 | #include "dwarf2/expr.h" |
59 | #include "dwarf2/loc.h" | |
4de283e4 TT |
60 | #include "cp-support.h" |
61 | #include "hashtab.h" | |
62 | #include "command.h" | |
d55e5aa6 | 63 | #include "gdbcmd.h" |
4de283e4 TT |
64 | #include "block.h" |
65 | #include "addrmap.h" | |
66 | #include "typeprint.h" | |
67 | #include "psympriv.h" | |
4de283e4 | 68 | #include "c-lang.h" |
d55e5aa6 | 69 | #include "go-lang.h" |
4de283e4 TT |
70 | #include "valprint.h" |
71 | #include "gdbcore.h" /* for gnutarget */ | |
72 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
73 | #include "gdb_bfd.h" |
74 | #include "f-lang.h" | |
75 | #include "source.h" | |
4de283e4 | 76 | #include "build-id.h" |
d55e5aa6 | 77 | #include "namespace.h" |
268a13a5 TT |
78 | #include "gdbsupport/function-view.h" |
79 | #include "gdbsupport/gdb_optional.h" | |
80 | #include "gdbsupport/underlying.h" | |
268a13a5 | 81 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 82 | #include "filename-seen-cache.h" |
b32b108a | 83 | #include "producer.h" |
4de283e4 | 84 | #include <fcntl.h> |
4de283e4 | 85 | #include <algorithm> |
4de283e4 | 86 | #include <unordered_map> |
268a13a5 | 87 | #include "gdbsupport/selftest.h" |
c9317f21 | 88 | #include "rust-lang.h" |
268a13a5 | 89 | #include "gdbsupport/pathstuff.h" |
edd45eb0 | 90 | #include "count-one-bits.h" |
437afbb8 | 91 | |
73be47f5 DE |
92 | /* When == 1, print basic high level tracing messages. |
93 | When > 1, be more verbose. | |
b4f54984 DE |
94 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
95 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 96 | |
6f738b01 SM |
97 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 1. */ |
98 | ||
99 | #define dwarf_read_debug_printf(fmt, ...) \ | |
74b773fc SM |
100 | debug_prefixed_printf_cond (dwarf_read_debug >= 1, "dwarf-read", fmt, \ |
101 | ##__VA_ARGS__) | |
6f738b01 SM |
102 | |
103 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 2. */ | |
104 | ||
105 | #define dwarf_read_debug_printf_v(fmt, ...) \ | |
74b773fc SM |
106 | debug_prefixed_printf_cond (dwarf_read_debug >= 2, "dwarf-read", fmt, \ |
107 | ##__VA_ARGS__) | |
6f738b01 | 108 | |
d97bc12b | 109 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 110 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 111 | |
27e0867f | 112 | /* When non-zero, dump line number entries as they are read in. */ |
8fdd972c | 113 | unsigned int dwarf_line_debug = 0; |
27e0867f | 114 | |
491144b5 CB |
115 | /* When true, cross-check physname against demangler. */ |
116 | static bool check_physname = false; | |
900e11f9 | 117 | |
491144b5 CB |
118 | /* When true, do not reject deprecated .gdb_index sections. */ |
119 | static bool use_deprecated_index_sections = false; | |
481860b3 | 120 | |
17ee85fc TT |
121 | /* This is used to store the data that is always per objfile. */ |
122 | static const objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; | |
123 | ||
124 | /* These are used to store the dwarf2_per_bfd objects. | |
125 | ||
126 | objfiles having the same BFD, which doesn't require relocations, are going to | |
127 | share a dwarf2_per_bfd object, which is held in the _bfd_data_key version. | |
128 | ||
129 | Other objfiles are not going to share a dwarf2_per_bfd with any other | |
130 | objfiles, so they'll have their own version kept in the _objfile_data_key | |
131 | version. */ | |
132 | static const struct bfd_key<dwarf2_per_bfd> dwarf2_per_bfd_bfd_data_key; | |
133 | static const struct objfile_key<dwarf2_per_bfd> dwarf2_per_bfd_objfile_data_key; | |
6502dd73 | 134 | |
f1e6e072 TT |
135 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
136 | ||
137 | static int dwarf2_locexpr_index; | |
138 | static int dwarf2_loclist_index; | |
139 | static int dwarf2_locexpr_block_index; | |
140 | static int dwarf2_loclist_block_index; | |
141 | ||
41144253 | 142 | /* Size of .debug_loclists section header for 32-bit DWARF format. */ |
143 | #define LOCLIST_HEADER_SIZE32 12 | |
144 | ||
145 | /* Size of .debug_loclists section header for 64-bit DWARF format. */ | |
146 | #define LOCLIST_HEADER_SIZE64 20 | |
147 | ||
d0ce17d8 CT |
148 | /* Size of .debug_rnglists section header for 32-bit DWARF format. */ |
149 | #define RNGLIST_HEADER_SIZE32 12 | |
150 | ||
151 | /* Size of .debug_rnglists section header for 64-bit DWARF format. */ | |
152 | #define RNGLIST_HEADER_SIZE64 20 | |
153 | ||
3f563c84 PA |
154 | /* An index into a (C++) symbol name component in a symbol name as |
155 | recorded in the mapped_index's symbol table. For each C++ symbol | |
156 | in the symbol table, we record one entry for the start of each | |
157 | component in the symbol in a table of name components, and then | |
158 | sort the table, in order to be able to binary search symbol names, | |
159 | ignoring leading namespaces, both completion and regular look up. | |
160 | For example, for symbol "A::B::C", we'll have an entry that points | |
161 | to "A::B::C", another that points to "B::C", and another for "C". | |
162 | Note that function symbols in GDB index have no parameter | |
163 | information, just the function/method names. You can convert a | |
164 | name_component to a "const char *" using the | |
165 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
166 | ||
167 | struct name_component | |
168 | { | |
169 | /* Offset in the symbol name where the component starts. Stored as | |
170 | a (32-bit) offset instead of a pointer to save memory and improve | |
171 | locality on 64-bit architectures. */ | |
172 | offset_type name_offset; | |
173 | ||
174 | /* The symbol's index in the symbol and constant pool tables of a | |
175 | mapped_index. */ | |
176 | offset_type idx; | |
177 | }; | |
178 | ||
44ed8f3e PA |
179 | /* Base class containing bits shared by both .gdb_index and |
180 | .debug_name indexes. */ | |
181 | ||
182 | struct mapped_index_base | |
183 | { | |
22ca247e TT |
184 | mapped_index_base () = default; |
185 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
186 | ||
44ed8f3e PA |
187 | /* The name_component table (a sorted vector). See name_component's |
188 | description above. */ | |
189 | std::vector<name_component> name_components; | |
190 | ||
191 | /* How NAME_COMPONENTS is sorted. */ | |
192 | enum case_sensitivity name_components_casing; | |
193 | ||
194 | /* Return the number of names in the symbol table. */ | |
195 | virtual size_t symbol_name_count () const = 0; | |
196 | ||
197 | /* Get the name of the symbol at IDX in the symbol table. */ | |
fcf23d5b SM |
198 | virtual const char *symbol_name_at |
199 | (offset_type idx, dwarf2_per_objfile *per_objfile) const = 0; | |
44ed8f3e PA |
200 | |
201 | /* Return whether the name at IDX in the symbol table should be | |
202 | ignored. */ | |
203 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
204 | { | |
205 | return false; | |
206 | } | |
207 | ||
208 | /* Build the symbol name component sorted vector, if we haven't | |
209 | yet. */ | |
fcf23d5b | 210 | void build_name_components (dwarf2_per_objfile *per_objfile); |
44ed8f3e PA |
211 | |
212 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
213 | possible matches for LN_NO_PARAMS in the name component | |
214 | vector. */ | |
215 | std::pair<std::vector<name_component>::const_iterator, | |
216 | std::vector<name_component>::const_iterator> | |
3b00ef10 | 217 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
fcf23d5b SM |
218 | enum language lang, |
219 | dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
220 | |
221 | /* Prevent deleting/destroying via a base class pointer. */ | |
222 | protected: | |
223 | ~mapped_index_base() = default; | |
224 | }; | |
225 | ||
9291a0cd TT |
226 | /* A description of the mapped index. The file format is described in |
227 | a comment by the code that writes the index. */ | |
fc898b42 | 228 | struct mapped_index final : public mapped_index_base |
9291a0cd | 229 | { |
f00a2de2 PA |
230 | /* A slot/bucket in the symbol table hash. */ |
231 | struct symbol_table_slot | |
232 | { | |
233 | const offset_type name; | |
234 | const offset_type vec; | |
235 | }; | |
236 | ||
559a7a62 | 237 | /* Index data format version. */ |
3063847f | 238 | int version = 0; |
559a7a62 | 239 | |
f00a2de2 PA |
240 | /* The address table data. */ |
241 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 242 | |
3876f04e | 243 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 244 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 245 | |
9291a0cd | 246 | /* A pointer to the constant pool. */ |
3063847f | 247 | const char *constant_pool = nullptr; |
3f563c84 | 248 | |
44ed8f3e PA |
249 | bool symbol_name_slot_invalid (offset_type idx) const override |
250 | { | |
251 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 252 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 253 | } |
5c58de74 | 254 | |
3f563c84 PA |
255 | /* Convenience method to get at the name of the symbol at IDX in the |
256 | symbol table. */ | |
fcf23d5b SM |
257 | const char *symbol_name_at |
258 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
f00a2de2 | 259 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 260 | |
44ed8f3e PA |
261 | size_t symbol_name_count () const override |
262 | { return this->symbol_table.size (); } | |
9291a0cd TT |
263 | }; |
264 | ||
927aa2e7 JK |
265 | /* A description of the mapped .debug_names. |
266 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 267 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 JK |
268 | { |
269 | bfd_endian dwarf5_byte_order; | |
270 | bool dwarf5_is_dwarf64; | |
271 | bool augmentation_is_gdb; | |
272 | uint8_t offset_size; | |
273 | uint32_t cu_count = 0; | |
274 | uint32_t tu_count, bucket_count, name_count; | |
275 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
276 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
277 | const gdb_byte *name_table_string_offs_reordered; | |
278 | const gdb_byte *name_table_entry_offs_reordered; | |
279 | const gdb_byte *entry_pool; | |
280 | ||
281 | struct index_val | |
282 | { | |
283 | ULONGEST dwarf_tag; | |
284 | struct attr | |
285 | { | |
286 | /* Attribute name DW_IDX_*. */ | |
287 | ULONGEST dw_idx; | |
288 | ||
289 | /* Attribute form DW_FORM_*. */ | |
290 | ULONGEST form; | |
291 | ||
292 | /* Value if FORM is DW_FORM_implicit_const. */ | |
293 | LONGEST implicit_const; | |
294 | }; | |
295 | std::vector<attr> attr_vec; | |
296 | }; | |
297 | ||
298 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
299 | ||
fcf23d5b SM |
300 | const char *namei_to_name |
301 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
302 | |
303 | /* Implementation of the mapped_index_base virtual interface, for | |
304 | the name_components cache. */ | |
305 | ||
fcf23d5b SM |
306 | const char *symbol_name_at |
307 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
308 | { return namei_to_name (idx, per_objfile); } | |
44ed8f3e PA |
309 | |
310 | size_t symbol_name_count () const override | |
311 | { return this->name_count; } | |
927aa2e7 JK |
312 | }; |
313 | ||
cd4fb1b2 | 314 | /* See dwarf2read.h. */ |
ed2dc618 | 315 | |
cd4fb1b2 | 316 | dwarf2_per_objfile * |
ed2dc618 SM |
317 | get_dwarf2_per_objfile (struct objfile *objfile) |
318 | { | |
5bfd760d | 319 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 320 | } |
c906108c | 321 | |
251d32d9 | 322 | /* Default names of the debugging sections. */ |
c906108c | 323 | |
233a11ab CS |
324 | /* Note that if the debugging section has been compressed, it might |
325 | have a name like .zdebug_info. */ | |
326 | ||
9938d15a | 327 | const struct dwarf2_debug_sections dwarf2_elf_names = |
9cdd5dbd | 328 | { |
251d32d9 TG |
329 | { ".debug_info", ".zdebug_info" }, |
330 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
331 | { ".debug_line", ".zdebug_line" }, | |
332 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 333 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 334 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 335 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 336 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 337 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 338 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 339 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 340 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 341 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 342 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
343 | { ".debug_frame", ".zdebug_frame" }, |
344 | { ".eh_frame", NULL }, | |
24d3216f | 345 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
346 | { ".debug_names", ".zdebug_names" }, |
347 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 348 | 23 |
251d32d9 | 349 | }; |
c906108c | 350 | |
80626a55 | 351 | /* List of DWO/DWP sections. */ |
3019eac3 | 352 | |
80626a55 | 353 | static const struct dwop_section_names |
3019eac3 DE |
354 | { |
355 | struct dwarf2_section_names abbrev_dwo; | |
356 | struct dwarf2_section_names info_dwo; | |
357 | struct dwarf2_section_names line_dwo; | |
358 | struct dwarf2_section_names loc_dwo; | |
43988095 | 359 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
360 | struct dwarf2_section_names macinfo_dwo; |
361 | struct dwarf2_section_names macro_dwo; | |
d0ce17d8 | 362 | struct dwarf2_section_names rnglists_dwo; |
3019eac3 DE |
363 | struct dwarf2_section_names str_dwo; |
364 | struct dwarf2_section_names str_offsets_dwo; | |
365 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
366 | struct dwarf2_section_names cu_index; |
367 | struct dwarf2_section_names tu_index; | |
3019eac3 | 368 | } |
80626a55 | 369 | dwop_section_names = |
3019eac3 DE |
370 | { |
371 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
372 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
373 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
374 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 375 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
376 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
377 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
d0ce17d8 | 378 | { ".debug_rnglists.dwo", ".zdebug_rnglists.dwo" }, |
3019eac3 DE |
379 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
380 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
381 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
382 | { ".debug_cu_index", ".zdebug_cu_index" }, |
383 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
384 | }; |
385 | ||
c906108c SS |
386 | /* local data types */ |
387 | ||
d0ce17d8 CT |
388 | /* The location list and range list sections (.debug_loclists & .debug_rnglists) |
389 | begin with a header, which contains the following information. */ | |
390 | struct loclists_rnglists_header | |
41144253 | 391 | { |
392 | /* A 4-byte or 12-byte length containing the length of the | |
393 | set of entries for this compilation unit, not including the | |
394 | length field itself. */ | |
395 | unsigned int length; | |
396 | ||
397 | /* A 2-byte version identifier. */ | |
398 | short version; | |
399 | ||
400 | /* A 1-byte unsigned integer containing the size in bytes of an address on | |
401 | the target system. */ | |
402 | unsigned char addr_size; | |
403 | ||
404 | /* A 1-byte unsigned integer containing the size in bytes of a segment selector | |
405 | on the target system. */ | |
406 | unsigned char segment_collector_size; | |
407 | ||
408 | /* A 4-byte count of the number of offsets that follow the header. */ | |
409 | unsigned int offset_entry_count; | |
410 | }; | |
411 | ||
3da10d80 KS |
412 | /* Type used for delaying computation of method physnames. |
413 | See comments for compute_delayed_physnames. */ | |
414 | struct delayed_method_info | |
415 | { | |
416 | /* The type to which the method is attached, i.e., its parent class. */ | |
417 | struct type *type; | |
418 | ||
419 | /* The index of the method in the type's function fieldlists. */ | |
420 | int fnfield_index; | |
421 | ||
422 | /* The index of the method in the fieldlist. */ | |
423 | int index; | |
424 | ||
425 | /* The name of the DIE. */ | |
426 | const char *name; | |
427 | ||
428 | /* The DIE associated with this method. */ | |
429 | struct die_info *die; | |
430 | }; | |
431 | ||
e7c27a73 DJ |
432 | /* Internal state when decoding a particular compilation unit. */ |
433 | struct dwarf2_cu | |
434 | { | |
9e021579 SM |
435 | explicit dwarf2_cu (dwarf2_per_cu_data *per_cu, |
436 | dwarf2_per_objfile *per_objfile); | |
fcd3b13d SM |
437 | |
438 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
439 | ||
c24bdb02 KS |
440 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
441 | Create the set of symtabs used by this TU, or if this TU is sharing | |
442 | symtabs with another TU and the symtabs have already been created | |
443 | then restore those symtabs in the line header. | |
444 | We don't need the pc/line-number mapping for type units. */ | |
445 | void setup_type_unit_groups (struct die_info *die); | |
446 | ||
447 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
448 | buildsym_compunit constructor. */ | |
449 | struct compunit_symtab *start_symtab (const char *name, | |
450 | const char *comp_dir, | |
451 | CORE_ADDR low_pc); | |
452 | ||
453 | /* Reset the builder. */ | |
454 | void reset_builder () { m_builder.reset (); } | |
455 | ||
293e7e51 SM |
456 | /* Return a type that is a generic pointer type, the size of which |
457 | matches the address size given in the compilation unit header for | |
458 | this CU. */ | |
459 | struct type *addr_type () const; | |
460 | ||
461 | /* Find an integer type the same size as the address size given in | |
462 | the compilation unit header for this CU. UNSIGNED_P controls if | |
463 | the integer is unsigned or not. */ | |
464 | struct type *addr_sized_int_type (bool unsigned_p) const; | |
465 | ||
d00adf39 | 466 | /* The header of the compilation unit. */ |
fcd3b13d | 467 | struct comp_unit_head header {}; |
e142c38c | 468 | |
d00adf39 | 469 | /* Base address of this compilation unit. */ |
2b24b6e4 | 470 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 471 | |
e142c38c | 472 | /* The language we are debugging. */ |
fcd3b13d SM |
473 | enum language language = language_unknown; |
474 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 475 | |
fcd3b13d | 476 | const char *producer = nullptr; |
b0f35d58 | 477 | |
c24bdb02 | 478 | private: |
804d2729 TT |
479 | /* The symtab builder for this CU. This is only non-NULL when full |
480 | symbols are being read. */ | |
c24bdb02 | 481 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 482 | |
c24bdb02 | 483 | public: |
e142c38c DJ |
484 | /* The generic symbol table building routines have separate lists for |
485 | file scope symbols and all all other scopes (local scopes). So | |
486 | we need to select the right one to pass to add_symbol_to_list(). | |
487 | We do it by keeping a pointer to the correct list in list_in_scope. | |
488 | ||
489 | FIXME: The original dwarf code just treated the file scope as the | |
490 | first local scope, and all other local scopes as nested local | |
491 | scopes, and worked fine. Check to see if we really need to | |
492 | distinguish these in buildsym.c. */ | |
fcd3b13d | 493 | struct pending **list_in_scope = nullptr; |
e142c38c | 494 | |
b64f50a1 JK |
495 | /* Hash table holding all the loaded partial DIEs |
496 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 497 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
498 | |
499 | /* Storage for things with the same lifetime as this read-in compilation | |
500 | unit, including partial DIEs. */ | |
fcd3b13d | 501 | auto_obstack comp_unit_obstack; |
72bf9492 | 502 | |
69d751e3 | 503 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
504 | struct dwarf2_per_cu_data *per_cu; |
505 | ||
9e021579 | 506 | /* The dwarf2_per_objfile that owns this. */ |
976ca316 | 507 | dwarf2_per_objfile *per_objfile; |
9e021579 | 508 | |
ae038cb0 | 509 | /* How many compilation units ago was this CU last referenced? */ |
fcd3b13d | 510 | int last_used = 0; |
ae038cb0 | 511 | |
b64f50a1 JK |
512 | /* A hash table of DIE cu_offset for following references with |
513 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 514 | htab_t die_hash = nullptr; |
10b3939b DJ |
515 | |
516 | /* Full DIEs if read in. */ | |
fcd3b13d | 517 | struct die_info *dies = nullptr; |
10b3939b DJ |
518 | |
519 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
520 | units referenced by this one. Only set during full symbol processing; | |
521 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 522 | htab_t dependencies = nullptr; |
10b3939b | 523 | |
cb1df416 | 524 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 525 | struct line_header *line_header = nullptr; |
4c8aa72d | 526 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
5989a64e | 527 | it's owned by dwarf2_per_bfd::line_header_hash. If non-NULL, |
4c8aa72d PA |
528 | this is the DW_TAG_compile_unit die for this CU. We'll hold on |
529 | to the line header as long as this DIE is being processed. See | |
530 | process_die_scope. */ | |
fcd3b13d | 531 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 532 | |
3da10d80 KS |
533 | /* A list of methods which need to have physnames computed |
534 | after all type information has been read. */ | |
c89b44cd | 535 | std::vector<delayed_method_info> method_list; |
3da10d80 | 536 | |
96408a79 | 537 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 538 | htab_t call_site_htab = nullptr; |
96408a79 | 539 | |
034e5797 DE |
540 | /* Non-NULL if this CU came from a DWO file. |
541 | There is an invariant here that is important to remember: | |
542 | Except for attributes copied from the top level DIE in the "main" | |
543 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 544 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
545 | Either there isn't a DWO file (in which case this is NULL and the point |
546 | is moot), or there is and either we're not going to read it (in which | |
547 | case this is NULL) or there is and we are reading it (in which case this | |
548 | is non-NULL). */ | |
fcd3b13d | 549 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 550 | |
18a8505e | 551 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 552 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 553 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 554 | |
2b0c7f41 SM |
555 | /* The DW_AT_GNU_ranges_base attribute, if present. |
556 | ||
557 | This is only relevant in the context of pre-DWARF 5 split units. In this | |
558 | context, there is a .debug_ranges section in the linked executable, | |
559 | containing all the ranges data for all the compilation units. Each | |
560 | skeleton/stub unit has (if needed) a DW_AT_GNU_ranges_base attribute that | |
561 | indicates the base of its contribution to that section. The DW_AT_ranges | |
562 | attributes in the split-unit are of the form DW_FORM_sec_offset and point | |
563 | into the .debug_ranges section of the linked file. However, they are not | |
564 | "true" DW_FORM_sec_offset, because they are relative to the base of their | |
565 | compilation unit's contribution, rather than relative to the beginning of | |
566 | the section. The DW_AT_GNU_ranges_base value must be added to it to make | |
567 | it relative to the beginning of the section. | |
568 | ||
569 | Note that the value is zero when we are not in a pre-DWARF 5 split-unit | |
570 | case, so this value can be added without needing to know whether we are in | |
571 | this case or not. | |
572 | ||
573 | N.B. If a DW_AT_ranges attribute is found on the DW_TAG_compile_unit in the | |
574 | skeleton/stub, it must not have the base added, as it already points to the | |
575 | right place. And since the DW_TAG_compile_unit DIE in the split-unit can't | |
576 | have a DW_AT_ranges attribute, we can use the | |
577 | ||
578 | die->tag != DW_AT_compile_unit | |
579 | ||
580 | to determine whether the base should be added or not. */ | |
581 | ULONGEST gnu_ranges_base = 0; | |
582 | ||
583 | /* The DW_AT_rnglists_base attribute, if present. | |
584 | ||
585 | This is used when processing attributes of form DW_FORM_rnglistx in | |
586 | non-split units. Attributes of this form found in a split unit don't | |
587 | use it, as split-unit files have their own non-shared .debug_rnglists.dwo | |
588 | section. */ | |
589 | ULONGEST rnglists_base = 0; | |
2e3cf129 | 590 | |
41144253 | 591 | /* The DW_AT_loclists_base attribute if present. */ |
592 | ULONGEST loclist_base = 0; | |
593 | ||
c9317f21 TT |
594 | /* When reading debug info generated by older versions of rustc, we |
595 | have to rewrite some union types to be struct types with a | |
596 | variant part. This rewriting must be done after the CU is fully | |
597 | read in, because otherwise at the point of rewriting some struct | |
598 | type might not have been fully processed. So, we keep a list of | |
599 | all such types here and process them after expansion. */ | |
600 | std::vector<struct type *> rust_unions; | |
601 | ||
18a8505e AT |
602 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
603 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
604 | value is often implicit and is the size of the header of | |
605 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
606 | gdb::optional<ULONGEST> str_offsets_base; | |
607 | ||
ae038cb0 | 608 | /* Mark used when releasing cached dies. */ |
9068261f | 609 | bool mark : 1; |
ae038cb0 | 610 | |
8be455d7 JK |
611 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
612 | This test is imperfect as there may exist optimized debug code not using | |
613 | any location list and still facing inlining issues if handled as | |
614 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 615 | bool has_loclist : 1; |
ba919b58 | 616 | |
9068261f | 617 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
618 | if all the producer_is_* fields are valid. This information is cached |
619 | because profiling CU expansion showed excessive time spent in | |
620 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
621 | bool checked_producer : 1; |
622 | bool producer_is_gxx_lt_4_6 : 1; | |
623 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 624 | bool producer_is_icc : 1; |
9068261f | 625 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 626 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 627 | |
9068261f | 628 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
629 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
630 | this information, but later versions do. */ | |
631 | ||
9068261f | 632 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
633 | |
634 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
635 | |
636 | /* If this CU was inherited by another CU (via specification, | |
637 | abstract_origin, etc), this is the ancestor CU. */ | |
638 | dwarf2_cu *ancestor; | |
639 | ||
640 | /* Get the buildsym_compunit for this CU. */ | |
641 | buildsym_compunit *get_builder () | |
642 | { | |
643 | /* If this CU has a builder associated with it, use that. */ | |
644 | if (m_builder != nullptr) | |
645 | return m_builder.get (); | |
646 | ||
647 | /* Otherwise, search ancestors for a valid builder. */ | |
648 | if (ancestor != nullptr) | |
649 | return ancestor->get_builder (); | |
650 | ||
651 | return nullptr; | |
652 | } | |
e7c27a73 DJ |
653 | }; |
654 | ||
094b34ac DE |
655 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
656 | This includes type_unit_group and quick_file_names. */ | |
657 | ||
658 | struct stmt_list_hash | |
659 | { | |
660 | /* The DWO unit this table is from or NULL if there is none. */ | |
661 | struct dwo_unit *dwo_unit; | |
662 | ||
663 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 664 | sect_offset line_sect_off; |
094b34ac DE |
665 | }; |
666 | ||
5989a64e | 667 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
668 | an object of this type. This contains elements of type unit groups |
669 | that can be shared across objfiles. The non-shareable parts are in | |
670 | type_unit_group_unshareable. */ | |
f4dc4d17 DE |
671 | |
672 | struct type_unit_group | |
673 | { | |
0186c6a7 | 674 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
675 | To simplify things we create an artificial CU that "includes" all the |
676 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 677 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
678 | struct dwarf2_per_cu_data per_cu; |
679 | ||
0186c6a7 DE |
680 | /* The TUs that share this DW_AT_stmt_list entry. |
681 | This is added to while parsing type units to build partial symtabs, | |
682 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 683 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 684 | |
094b34ac DE |
685 | /* The data used to construct the hash key. */ |
686 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
687 | }; |
688 | ||
73869dc2 | 689 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
690 | |
691 | struct dwo_sections | |
692 | { | |
693 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
694 | struct dwarf2_section_info line; |
695 | struct dwarf2_section_info loc; | |
43988095 | 696 | struct dwarf2_section_info loclists; |
09262596 DE |
697 | struct dwarf2_section_info macinfo; |
698 | struct dwarf2_section_info macro; | |
d0ce17d8 | 699 | struct dwarf2_section_info rnglists; |
3019eac3 DE |
700 | struct dwarf2_section_info str; |
701 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
702 | /* In the case of a virtual DWO file, these two are unused. */ |
703 | struct dwarf2_section_info info; | |
fd5866f6 | 704 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
705 | }; |
706 | ||
c88ee1f0 | 707 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
708 | |
709 | struct dwo_unit | |
710 | { | |
711 | /* Backlink to the containing struct dwo_file. */ | |
712 | struct dwo_file *dwo_file; | |
713 | ||
714 | /* The "id" that distinguishes this CU/TU. | |
715 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
716 | Since signatures came first, we stick with it for consistency. */ | |
717 | ULONGEST signature; | |
718 | ||
719 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 720 | struct dwarf2_section_info *section; |
3019eac3 | 721 | |
9c541725 PA |
722 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
723 | sect_offset sect_off; | |
3019eac3 DE |
724 | unsigned int length; |
725 | ||
726 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
727 | cu_offset type_offset_in_tu; | |
728 | }; | |
729 | ||
73869dc2 DE |
730 | /* include/dwarf2.h defines the DWP section codes. |
731 | It defines a max value but it doesn't define a min value, which we | |
732 | use for error checking, so provide one. */ | |
733 | ||
734 | enum dwp_v2_section_ids | |
735 | { | |
736 | DW_SECT_MIN = 1 | |
737 | }; | |
738 | ||
80626a55 | 739 | /* Data for one DWO file. |
57d63ce2 DE |
740 | |
741 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
742 | appears in a DWP file). DWP files don't really have DWO files per se - | |
743 | comdat folding of types "loses" the DWO file they came from, and from | |
744 | a high level view DWP files appear to contain a mass of random types. | |
745 | However, to maintain consistency with the non-DWP case we pretend DWP | |
746 | files contain virtual DWO files, and we assign each TU with one virtual | |
747 | DWO file (generally based on the line and abbrev section offsets - | |
748 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
749 | |
750 | struct dwo_file | |
751 | { | |
51ac9db5 SM |
752 | dwo_file () = default; |
753 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
754 | ||
18a8505e | 755 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
756 | For virtual DWO files the name is constructed from the section offsets |
757 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
758 | from related CU+TUs. */ | |
51ac9db5 | 759 | const char *dwo_name = nullptr; |
0ac5b59e DE |
760 | |
761 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 762 | const char *comp_dir = nullptr; |
3019eac3 | 763 | |
80626a55 DE |
764 | /* The bfd, when the file is open. Otherwise this is NULL. |
765 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 766 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 767 | |
73869dc2 | 768 | /* The sections that make up this DWO file. |
d2854d8d | 769 | Remember that for virtual DWO files in DWP V2 or DWP V5, these are virtual |
73869dc2 | 770 | sections (for lack of a better name). */ |
51ac9db5 | 771 | struct dwo_sections sections {}; |
3019eac3 | 772 | |
33c5cd75 DB |
773 | /* The CUs in the file. |
774 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
775 | an extension to handle LLVM's Link Time Optimization output (where | |
776 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 777 | htab_up cus; |
3019eac3 DE |
778 | |
779 | /* Table of TUs in the file. | |
780 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 781 | htab_up tus; |
3019eac3 DE |
782 | }; |
783 | ||
80626a55 DE |
784 | /* These sections are what may appear in a DWP file. */ |
785 | ||
786 | struct dwp_sections | |
787 | { | |
d2854d8d | 788 | /* These are used by all DWP versions (1, 2 and 5). */ |
80626a55 DE |
789 | struct dwarf2_section_info str; |
790 | struct dwarf2_section_info cu_index; | |
791 | struct dwarf2_section_info tu_index; | |
73869dc2 | 792 | |
d2854d8d | 793 | /* These are only used by DWP version 2 and version 5 files. |
73869dc2 DE |
794 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other |
795 | sections are referenced by section number, and are not recorded here. | |
d2854d8d CT |
796 | In DWP version 2 or 5 there is at most one copy of all these sections, |
797 | each section being (effectively) comprised of the concatenation of all of | |
798 | the individual sections that exist in the version 1 format. | |
73869dc2 DE |
799 | To keep the code simple we treat each of these concatenated pieces as a |
800 | section itself (a virtual section?). */ | |
801 | struct dwarf2_section_info abbrev; | |
802 | struct dwarf2_section_info info; | |
803 | struct dwarf2_section_info line; | |
804 | struct dwarf2_section_info loc; | |
d2854d8d | 805 | struct dwarf2_section_info loclists; |
73869dc2 DE |
806 | struct dwarf2_section_info macinfo; |
807 | struct dwarf2_section_info macro; | |
d2854d8d | 808 | struct dwarf2_section_info rnglists; |
73869dc2 DE |
809 | struct dwarf2_section_info str_offsets; |
810 | struct dwarf2_section_info types; | |
80626a55 DE |
811 | }; |
812 | ||
73869dc2 DE |
813 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
814 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 815 | |
73869dc2 | 816 | struct virtual_v1_dwo_sections |
80626a55 DE |
817 | { |
818 | struct dwarf2_section_info abbrev; | |
819 | struct dwarf2_section_info line; | |
820 | struct dwarf2_section_info loc; | |
821 | struct dwarf2_section_info macinfo; | |
822 | struct dwarf2_section_info macro; | |
823 | struct dwarf2_section_info str_offsets; | |
824 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 825 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
826 | struct dwarf2_section_info info_or_types; |
827 | }; | |
828 | ||
d2854d8d | 829 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2 or 5. |
73869dc2 DE |
830 | In version 2, the sections of the DWO files are concatenated together |
831 | and stored in one section of that name. Thus each ELF section contains | |
832 | several "virtual" sections. */ | |
833 | ||
d2854d8d | 834 | struct virtual_v2_or_v5_dwo_sections |
73869dc2 DE |
835 | { |
836 | bfd_size_type abbrev_offset; | |
837 | bfd_size_type abbrev_size; | |
838 | ||
839 | bfd_size_type line_offset; | |
840 | bfd_size_type line_size; | |
841 | ||
842 | bfd_size_type loc_offset; | |
843 | bfd_size_type loc_size; | |
844 | ||
d2854d8d CT |
845 | bfd_size_type loclists_offset; |
846 | bfd_size_type loclists_size; | |
847 | ||
73869dc2 DE |
848 | bfd_size_type macinfo_offset; |
849 | bfd_size_type macinfo_size; | |
850 | ||
851 | bfd_size_type macro_offset; | |
852 | bfd_size_type macro_size; | |
853 | ||
d2854d8d CT |
854 | bfd_size_type rnglists_offset; |
855 | bfd_size_type rnglists_size; | |
856 | ||
73869dc2 DE |
857 | bfd_size_type str_offsets_offset; |
858 | bfd_size_type str_offsets_size; | |
859 | ||
860 | /* Each DWP hash table entry records one CU or one TU. | |
861 | That is recorded here, and copied to dwo_unit.section. */ | |
862 | bfd_size_type info_or_types_offset; | |
863 | bfd_size_type info_or_types_size; | |
864 | }; | |
865 | ||
80626a55 DE |
866 | /* Contents of DWP hash tables. */ |
867 | ||
868 | struct dwp_hash_table | |
869 | { | |
73869dc2 | 870 | uint32_t version, nr_columns; |
80626a55 | 871 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
872 | const gdb_byte *hash_table, *unit_table; |
873 | union | |
874 | { | |
875 | struct | |
876 | { | |
877 | const gdb_byte *indices; | |
878 | } v1; | |
879 | struct | |
880 | { | |
881 | /* This is indexed by column number and gives the id of the section | |
882 | in that column. */ | |
883 | #define MAX_NR_V2_DWO_SECTIONS \ | |
884 | (1 /* .debug_info or .debug_types */ \ | |
885 | + 1 /* .debug_abbrev */ \ | |
886 | + 1 /* .debug_line */ \ | |
887 | + 1 /* .debug_loc */ \ | |
888 | + 1 /* .debug_str_offsets */ \ | |
889 | + 1 /* .debug_macro or .debug_macinfo */) | |
890 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
891 | const gdb_byte *offsets; | |
892 | const gdb_byte *sizes; | |
893 | } v2; | |
d2854d8d CT |
894 | struct |
895 | { | |
896 | /* This is indexed by column number and gives the id of the section | |
897 | in that column. */ | |
898 | #define MAX_NR_V5_DWO_SECTIONS \ | |
899 | (1 /* .debug_info */ \ | |
900 | + 1 /* .debug_abbrev */ \ | |
901 | + 1 /* .debug_line */ \ | |
902 | + 1 /* .debug_loclists */ \ | |
903 | + 1 /* .debug_str_offsets */ \ | |
904 | + 1 /* .debug_macro */ \ | |
905 | + 1 /* .debug_rnglists */) | |
906 | int section_ids[MAX_NR_V5_DWO_SECTIONS]; | |
907 | const gdb_byte *offsets; | |
908 | const gdb_byte *sizes; | |
909 | } v5; | |
73869dc2 | 910 | } section_pool; |
80626a55 DE |
911 | }; |
912 | ||
913 | /* Data for one DWP file. */ | |
914 | ||
915 | struct dwp_file | |
916 | { | |
400174b1 TT |
917 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
918 | : name (name_), | |
919 | dbfd (std::move (abfd)) | |
920 | { | |
921 | } | |
922 | ||
80626a55 DE |
923 | /* Name of the file. */ |
924 | const char *name; | |
925 | ||
73869dc2 | 926 | /* File format version. */ |
400174b1 | 927 | int version = 0; |
73869dc2 | 928 | |
93417882 | 929 | /* The bfd. */ |
400174b1 | 930 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
931 | |
932 | /* Section info for this file. */ | |
400174b1 | 933 | struct dwp_sections sections {}; |
80626a55 | 934 | |
57d63ce2 | 935 | /* Table of CUs in the file. */ |
400174b1 | 936 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
937 | |
938 | /* Table of TUs in the file. */ | |
400174b1 | 939 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 940 | |
19ac8c2e | 941 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
942 | htab_up loaded_cus; |
943 | htab_up loaded_tus; | |
80626a55 | 944 | |
73869dc2 DE |
945 | /* Table to map ELF section numbers to their sections. |
946 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
947 | unsigned int num_sections = 0; |
948 | asection **elf_sections = nullptr; | |
80626a55 DE |
949 | }; |
950 | ||
0963b4bd MS |
951 | /* Struct used to pass misc. parameters to read_die_and_children, et |
952 | al. which are used for both .debug_info and .debug_types dies. | |
953 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 954 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
955 | |
956 | struct die_reader_specs | |
957 | { | |
a32a8923 | 958 | /* The bfd of die_section. */ |
0280fdcc | 959 | bfd *abfd; |
93311388 DE |
960 | |
961 | /* The CU of the DIE we are parsing. */ | |
962 | struct dwarf2_cu *cu; | |
963 | ||
80626a55 | 964 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
965 | struct dwo_file *dwo_file; |
966 | ||
dee91e82 | 967 | /* The section the die comes from. |
3019eac3 | 968 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
969 | struct dwarf2_section_info *die_section; |
970 | ||
971 | /* die_section->buffer. */ | |
d521ce57 | 972 | const gdb_byte *buffer; |
f664829e DE |
973 | |
974 | /* The end of the buffer. */ | |
975 | const gdb_byte *buffer_end; | |
a2ce51a0 | 976 | |
685af9cd TT |
977 | /* The abbreviation table to use when reading the DIEs. */ |
978 | struct abbrev_table *abbrev_table; | |
93311388 DE |
979 | }; |
980 | ||
c0ab21c2 TT |
981 | /* A subclass of die_reader_specs that holds storage and has complex |
982 | constructor and destructor behavior. */ | |
983 | ||
984 | class cutu_reader : public die_reader_specs | |
985 | { | |
986 | public: | |
987 | ||
ab432490 SM |
988 | cutu_reader (dwarf2_per_cu_data *this_cu, |
989 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 990 | struct abbrev_table *abbrev_table, |
2e671100 | 991 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
992 | bool skip_partial); |
993 | ||
994 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 995 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
996 | struct dwarf2_cu *parent_cu = nullptr, |
997 | struct dwo_file *dwo_file = nullptr); | |
998 | ||
c0ab21c2 TT |
999 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
1000 | ||
1001 | const gdb_byte *info_ptr = nullptr; | |
1002 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
1003 | bool dummy_p = false; |
1004 | ||
6751ebae TT |
1005 | /* Release the new CU, putting it on the chain. This cannot be done |
1006 | for dummy CUs. */ | |
1007 | void keep (); | |
1008 | ||
c0ab21c2 | 1009 | private: |
9e021579 SM |
1010 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
1011 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 1012 | dwarf2_cu *existing_cu); |
c0ab21c2 TT |
1013 | |
1014 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
1015 | std::unique_ptr<dwarf2_cu> m_new_cu; |
1016 | ||
1017 | /* The ordinary abbreviation table. */ | |
1018 | abbrev_table_up m_abbrev_table_holder; | |
1019 | ||
1020 | /* The DWO abbreviation table. */ | |
1021 | abbrev_table_up m_dwo_abbrev_table; | |
1022 | }; | |
dee91e82 | 1023 | |
c906108c | 1024 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1025 | need this much information. */ |
6f06d47b | 1026 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1027 | { |
7c32eebb | 1028 | partial_die_info (sect_offset sect_off, const struct abbrev_info *abbrev); |
6f06d47b YQ |
1029 | |
1030 | /* Disable assign but still keep copy ctor, which is needed | |
1031 | load_partial_dies. */ | |
1032 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1033 | ||
52356b79 YQ |
1034 | /* Adjust the partial die before generating a symbol for it. This |
1035 | function may set the is_external flag or change the DIE's | |
1036 | name. */ | |
1037 | void fixup (struct dwarf2_cu *cu); | |
1038 | ||
48fbe735 YQ |
1039 | /* Read a minimal amount of information into the minimal die |
1040 | structure. */ | |
1041 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1042 | const struct abbrev_info &abbrev, | |
1043 | const gdb_byte *info_ptr); | |
1044 | ||
7d00ffec TT |
1045 | /* Compute the name of this partial DIE. This memoizes the |
1046 | result, so it is safe to call multiple times. */ | |
1047 | const char *name (dwarf2_cu *cu); | |
1048 | ||
72bf9492 | 1049 | /* Offset of this DIE. */ |
6f06d47b | 1050 | const sect_offset sect_off; |
72bf9492 DJ |
1051 | |
1052 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1053 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1054 | |
72bf9492 | 1055 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1056 | const unsigned int has_children : 1; |
1057 | ||
72bf9492 DJ |
1058 | unsigned int is_external : 1; |
1059 | unsigned int is_declaration : 1; | |
1060 | unsigned int has_type : 1; | |
1061 | unsigned int has_specification : 1; | |
1062 | unsigned int has_pc_info : 1; | |
481860b3 | 1063 | unsigned int may_be_inlined : 1; |
72bf9492 | 1064 | |
0c1b455e TT |
1065 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1066 | unsigned int main_subprogram : 1; | |
1067 | ||
72bf9492 DJ |
1068 | /* Flag set if the SCOPE field of this structure has been |
1069 | computed. */ | |
1070 | unsigned int scope_set : 1; | |
1071 | ||
fa4028e9 JB |
1072 | /* Flag set if the DIE has a byte_size attribute. */ |
1073 | unsigned int has_byte_size : 1; | |
1074 | ||
ff908ebf AW |
1075 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1076 | unsigned int has_const_value : 1; | |
1077 | ||
98bfdba5 PA |
1078 | /* Flag set if any of the DIE's children are template arguments. */ |
1079 | unsigned int has_template_arguments : 1; | |
1080 | ||
52356b79 | 1081 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1082 | unsigned int fixup_called : 1; |
1083 | ||
36586728 TT |
1084 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1085 | unsigned int is_dwz : 1; | |
1086 | ||
1087 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1088 | unsigned int spec_is_dwz : 1; | |
1089 | ||
7d00ffec TT |
1090 | unsigned int canonical_name : 1; |
1091 | ||
72bf9492 | 1092 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1093 | sometimes a default name for unnamed DIEs. */ |
7d00ffec | 1094 | const char *raw_name = nullptr; |
72bf9492 | 1095 | |
abc72ce4 | 1096 | /* The linkage name, if present. */ |
6f06d47b | 1097 | const char *linkage_name = nullptr; |
abc72ce4 | 1098 | |
72bf9492 DJ |
1099 | /* The scope to prepend to our children. This is generally |
1100 | allocated on the comp_unit_obstack, so will disappear | |
1101 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1102 | const char *scope = nullptr; |
72bf9492 | 1103 | |
95554aad TT |
1104 | /* Some data associated with the partial DIE. The tag determines |
1105 | which field is live. */ | |
1106 | union | |
1107 | { | |
1108 | /* The location description associated with this DIE, if any. */ | |
1109 | struct dwarf_block *locdesc; | |
1110 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1111 | sect_offset sect_off; |
6f06d47b | 1112 | } d {}; |
72bf9492 DJ |
1113 | |
1114 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1115 | CORE_ADDR lowpc = 0; |
1116 | CORE_ADDR highpc = 0; | |
72bf9492 | 1117 | |
93311388 | 1118 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1119 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1120 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1121 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1122 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1123 | |
1124 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1125 | DW_AT_specification (or DW_AT_abstract_origin or | |
1126 | DW_AT_extension). */ | |
6f06d47b | 1127 | sect_offset spec_offset {}; |
72bf9492 DJ |
1128 | |
1129 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1130 | if any. */ | |
6f06d47b YQ |
1131 | struct partial_die_info *die_parent = nullptr; |
1132 | struct partial_die_info *die_child = nullptr; | |
1133 | struct partial_die_info *die_sibling = nullptr; | |
1134 | ||
1135 | friend struct partial_die_info * | |
1136 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1137 | ||
1138 | private: | |
1139 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1140 | partial_die_info (sect_offset sect_off) | |
1141 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1142 | { | |
1143 | } | |
1144 | ||
1145 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1146 | int has_children_) | |
1147 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1148 | { | |
1149 | is_external = 0; | |
1150 | is_declaration = 0; | |
1151 | has_type = 0; | |
1152 | has_specification = 0; | |
1153 | has_pc_info = 0; | |
1154 | may_be_inlined = 0; | |
1155 | main_subprogram = 0; | |
1156 | scope_set = 0; | |
1157 | has_byte_size = 0; | |
1158 | has_const_value = 0; | |
1159 | has_template_arguments = 0; | |
1160 | fixup_called = 0; | |
1161 | is_dwz = 0; | |
1162 | spec_is_dwz = 0; | |
7d00ffec | 1163 | canonical_name = 0; |
6f06d47b | 1164 | } |
c906108c SS |
1165 | }; |
1166 | ||
c906108c SS |
1167 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1168 | but this would require a corresponding change in unpack_field_as_long | |
1169 | and friends. */ | |
1170 | static int bits_per_byte = 8; | |
1171 | ||
9c6a1327 TT |
1172 | struct variant_part_builder; |
1173 | ||
1174 | /* When reading a variant, we track a bit more information about the | |
1175 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1176 | |
1177 | struct variant_field | |
1178 | { | |
9c6a1327 TT |
1179 | int first_field = -1; |
1180 | int last_field = -1; | |
1181 | ||
1182 | /* A variant can contain other variant parts. */ | |
1183 | std::vector<variant_part_builder> variant_parts; | |
1184 | ||
2ddeaf8a TT |
1185 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1186 | default branch. */ | |
9c6a1327 TT |
1187 | bool default_branch = false; |
1188 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1189 | value. */ | |
1190 | ULONGEST discriminant_value = 0; | |
1191 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1192 | data. */ | |
1193 | struct dwarf_block *discr_list_data = nullptr; | |
1194 | }; | |
1195 | ||
1196 | /* This represents a DW_TAG_variant_part. */ | |
1197 | ||
1198 | struct variant_part_builder | |
1199 | { | |
1200 | /* The offset of the discriminant field. */ | |
1201 | sect_offset discriminant_offset {}; | |
1202 | ||
1203 | /* Variants that are direct children of this variant part. */ | |
1204 | std::vector<variant_field> variants; | |
1205 | ||
1206 | /* True if we're currently reading a variant. */ | |
1207 | bool processing_variant = false; | |
2ddeaf8a TT |
1208 | }; |
1209 | ||
52059ffd TT |
1210 | struct nextfield |
1211 | { | |
be2daae6 TT |
1212 | int accessibility = 0; |
1213 | int virtuality = 0; | |
9c6a1327 TT |
1214 | /* Variant parts need to find the discriminant, which is a DIE |
1215 | reference. We track the section offset of each field to make | |
1216 | this link. */ | |
1217 | sect_offset offset; | |
be2daae6 | 1218 | struct field field {}; |
52059ffd TT |
1219 | }; |
1220 | ||
1221 | struct fnfieldlist | |
1222 | { | |
be2daae6 TT |
1223 | const char *name = nullptr; |
1224 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1225 | }; |
1226 | ||
c906108c SS |
1227 | /* The routines that read and process dies for a C struct or C++ class |
1228 | pass lists of data member fields and lists of member function fields | |
1229 | in an instance of a field_info structure, as defined below. */ | |
1230 | struct field_info | |
2de01bdb SM |
1231 | { |
1232 | /* List of data member and baseclasses fields. */ | |
1233 | std::vector<struct nextfield> fields; | |
1234 | std::vector<struct nextfield> baseclasses; | |
1235 | ||
1236 | /* Set if the accessibility of one of the fields is not public. */ | |
264fc0e2 | 1237 | bool non_public_fields = false; |
2de01bdb SM |
1238 | |
1239 | /* Member function fieldlist array, contains name of possibly overloaded | |
1240 | member function, number of overloaded member functions and a pointer | |
1241 | to the head of the member function field chain. */ | |
1242 | std::vector<struct fnfieldlist> fnfieldlists; | |
1243 | ||
1244 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1245 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1246 | std::vector<struct decl_field> typedef_field_list; | |
1247 | ||
1248 | /* Nested types defined by this class and the number of elements in this | |
1249 | list. */ | |
1250 | std::vector<struct decl_field> nested_types_list; | |
1251 | ||
1252 | /* If non-null, this is the variant part we are currently | |
1253 | reading. */ | |
1254 | variant_part_builder *current_variant_part = nullptr; | |
1255 | /* This holds all the top-level variant parts attached to the type | |
1256 | we're reading. */ | |
1257 | std::vector<variant_part_builder> variant_parts; | |
1258 | ||
1259 | /* Return the total number of fields (including baseclasses). */ | |
1260 | int nfields () const | |
c5aa993b | 1261 | { |
2de01bdb SM |
1262 | return fields.size () + baseclasses.size (); |
1263 | } | |
1264 | }; | |
c906108c | 1265 | |
ae038cb0 DJ |
1266 | /* Loaded secondary compilation units are kept in memory until they |
1267 | have not been referenced for the processing of this many | |
1268 | compilation units. Set this to zero to disable caching. Cache | |
1269 | sizes of up to at least twenty will improve startup time for | |
1270 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1271 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1272 | static void |
b4f54984 DE |
1273 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1274 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1275 | { |
3e43a32a | 1276 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1277 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1278 | value); |
1279 | } | |
4390d890 | 1280 | \f |
c906108c SS |
1281 | /* local function prototypes */ |
1282 | ||
918dd910 JK |
1283 | static void dwarf2_find_base_address (struct die_info *die, |
1284 | struct dwarf2_cu *cu); | |
1285 | ||
891813be | 1286 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1287 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1288 | const char *name); | |
0018ea6f | 1289 | |
f1902523 JK |
1290 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1291 | const gdb_byte *info_ptr, | |
3e225074 | 1292 | struct die_info *type_unit_die); |
f1902523 | 1293 | |
976ca316 | 1294 | static void dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile); |
c906108c | 1295 | |
72bf9492 DJ |
1296 | static void scan_partial_symbols (struct partial_die_info *, |
1297 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1298 | int, struct dwarf2_cu *); |
c906108c | 1299 | |
72bf9492 DJ |
1300 | static void add_partial_symbol (struct partial_die_info *, |
1301 | struct dwarf2_cu *); | |
63d06c5c | 1302 | |
72bf9492 DJ |
1303 | static void add_partial_namespace (struct partial_die_info *pdi, |
1304 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1305 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1306 | |
5d7cb8df | 1307 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1308 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1309 | struct dwarf2_cu *cu); |
1310 | ||
72bf9492 DJ |
1311 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1312 | struct dwarf2_cu *cu); | |
91c24f0a | 1313 | |
bc30ff58 JB |
1314 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1315 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1316 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1317 | |
d521ce57 | 1318 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1319 | |
dee91e82 | 1320 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1321 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1322 | |
fb816e8b TV |
1323 | /* A pair of partial_die_info and compilation unit. */ |
1324 | struct cu_partial_die_info | |
1325 | { | |
1326 | /* The compilation unit of the partial_die_info. */ | |
1327 | struct dwarf2_cu *cu; | |
1328 | /* A partial_die_info. */ | |
1329 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1330 | |
1331 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1332 | : cu (cu), | |
1333 | pdi (pdi) | |
405feb71 | 1334 | { /* Nothing. */ } |
122cf0f2 AB |
1335 | |
1336 | private: | |
1337 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1338 | }; |
1339 | ||
122cf0f2 AB |
1340 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1341 | struct dwarf2_cu *); | |
72bf9492 | 1342 | |
d521ce57 | 1343 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
4444f407 TT |
1344 | struct attribute *, |
1345 | const struct attr_abbrev *, | |
7a5f294d | 1346 | const gdb_byte *); |
18a8505e AT |
1347 | |
1348 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 1349 | struct attribute *attr, dwarf_tag tag); |
18a8505e AT |
1350 | |
1351 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1352 | |
976ca316 SM |
1353 | static sect_offset read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
1354 | dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1355 | |
ed2dc618 | 1356 | static const char *read_indirect_string |
976ca316 | 1357 | (dwarf2_per_objfile *per_objfile, bfd *, const gdb_byte *, |
ed2dc618 | 1358 | const struct comp_unit_head *, unsigned int *); |
4bdf3d34 | 1359 | |
ed2dc618 | 1360 | static const char *read_indirect_string_at_offset |
976ca316 | 1361 | (dwarf2_per_objfile *per_objfile, LONGEST str_offset); |
927aa2e7 | 1362 | |
d521ce57 TT |
1363 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1364 | const gdb_byte *, | |
3019eac3 DE |
1365 | unsigned int *); |
1366 | ||
18a8505e AT |
1367 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1368 | ULONGEST str_index); | |
1369 | ||
1370 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1371 | ULONGEST str_index); | |
3019eac3 | 1372 | |
e142c38c | 1373 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1374 | |
e142c38c DJ |
1375 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1376 | struct dwarf2_cu *); | |
c906108c | 1377 | |
7d45c7c3 | 1378 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
dda83cd7 | 1379 | struct dwarf2_cu *cu); |
7d45c7c3 | 1380 | |
a084a2a6 AT |
1381 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1382 | ||
05cf31d1 | 1383 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
dda83cd7 | 1384 | struct dwarf2_cu *cu); |
05cf31d1 | 1385 | |
e142c38c | 1386 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1387 | |
e142c38c | 1388 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1389 | struct dwarf2_cu **); |
63d06c5c | 1390 | |
9c541725 | 1391 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1392 | struct dwarf2_cu *cu); |
debd256d | 1393 | |
f3f5162e | 1394 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1395 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1396 | CORE_ADDR, int decode_mapping); |
c906108c | 1397 | |
804d2729 TT |
1398 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1399 | const char *); | |
c906108c | 1400 | |
a14ed312 | 1401 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1402 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1403 | |
ff39bb5e | 1404 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1405 | struct dwarf2_cu *); |
c906108c | 1406 | |
ff39bb5e | 1407 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1408 | struct type *type, |
1409 | const char *name, | |
1410 | struct obstack *obstack, | |
12df843f | 1411 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1412 | const gdb_byte **bytes, |
98bfdba5 | 1413 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1414 | |
57567375 TT |
1415 | static struct type *read_subrange_index_type (struct die_info *die, |
1416 | struct dwarf2_cu *cu); | |
1417 | ||
e7c27a73 | 1418 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1419 | |
b4ba55a1 JB |
1420 | static int need_gnat_info (struct dwarf2_cu *); |
1421 | ||
3e43a32a MS |
1422 | static struct type *die_descriptive_type (struct die_info *, |
1423 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1424 | |
1425 | static void set_descriptive_type (struct type *, struct die_info *, | |
1426 | struct dwarf2_cu *); | |
1427 | ||
e7c27a73 DJ |
1428 | static struct type *die_containing_type (struct die_info *, |
1429 | struct dwarf2_cu *); | |
c906108c | 1430 | |
ff39bb5e | 1431 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1432 | struct dwarf2_cu *); |
c906108c | 1433 | |
f792889a | 1434 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1435 | |
673bfd45 DE |
1436 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1437 | ||
0d5cff50 | 1438 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1439 | |
6e70227d | 1440 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1441 | const char *suffix, int physname, |
1442 | struct dwarf2_cu *cu); | |
63d06c5c | 1443 | |
e7c27a73 | 1444 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1445 | |
348e048f DE |
1446 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1447 | ||
e7c27a73 | 1448 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1449 | |
e7c27a73 | 1450 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1451 | |
96408a79 SA |
1452 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1453 | ||
71a3c369 TT |
1454 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1455 | ||
41144253 | 1456 | /* Return the .debug_loclists section to use for cu. */ |
1457 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1458 | ||
d0ce17d8 CT |
1459 | /* Return the .debug_rnglists section to use for cu. */ |
1460 | static struct dwarf2_section_info *cu_debug_rnglists_section | |
1461 | (struct dwarf2_cu *cu, dwarf_tag tag); | |
1462 | ||
3a2b436a | 1463 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1464 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1465 | enum pc_bounds_kind |
1466 | { | |
e385593e | 1467 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1468 | PC_BOUNDS_NOT_PRESENT, |
1469 | ||
e385593e JK |
1470 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1471 | were present but they do not form a valid range of PC addresses. */ | |
1472 | PC_BOUNDS_INVALID, | |
1473 | ||
3a2b436a JK |
1474 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1475 | PC_BOUNDS_RANGES, | |
1476 | ||
1477 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1478 | PC_BOUNDS_HIGH_LOW, | |
1479 | }; | |
1480 | ||
1481 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1482 | CORE_ADDR *, CORE_ADDR *, | |
1483 | struct dwarf2_cu *, | |
891813be | 1484 | dwarf2_psymtab *); |
c906108c | 1485 | |
fae299cd DC |
1486 | static void get_scope_pc_bounds (struct die_info *, |
1487 | CORE_ADDR *, CORE_ADDR *, | |
1488 | struct dwarf2_cu *); | |
1489 | ||
801e3a5b | 1490 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
dda83cd7 | 1491 | CORE_ADDR, struct dwarf2_cu *); |
801e3a5b | 1492 | |
a14ed312 | 1493 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1494 | struct dwarf2_cu *); |
c906108c | 1495 | |
a14ed312 | 1496 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1497 | struct type *, struct dwarf2_cu *); |
c906108c | 1498 | |
a14ed312 | 1499 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1500 | struct die_info *, struct type *, |
e7c27a73 | 1501 | struct dwarf2_cu *); |
c906108c | 1502 | |
a14ed312 | 1503 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1504 | struct type *, |
1505 | struct dwarf2_cu *); | |
c906108c | 1506 | |
134d01f1 | 1507 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1508 | |
e7c27a73 | 1509 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1510 | |
e7c27a73 | 1511 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1512 | |
5d7cb8df JK |
1513 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1514 | ||
804d2729 | 1515 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1516 | |
27aa8d6a SW |
1517 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1518 | ||
74921315 KS |
1519 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1520 | ||
f55ee35c JK |
1521 | static struct type *read_module_type (struct die_info *die, |
1522 | struct dwarf2_cu *cu); | |
1523 | ||
38d518c9 | 1524 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1525 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1526 | |
134d01f1 | 1527 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1528 | |
7d79de9a TT |
1529 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1530 | bool * = nullptr); | |
c906108c | 1531 | |
6e70227d | 1532 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1533 | struct dwarf2_cu *); |
1534 | ||
bf6af496 | 1535 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1536 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1537 | struct die_info *); |
639d11d3 | 1538 | |
dee91e82 | 1539 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1540 | const gdb_byte *info_ptr, |
1541 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1542 | struct die_info *parent); |
1543 | ||
d521ce57 TT |
1544 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1545 | struct die_info **, const gdb_byte *, | |
3e225074 | 1546 | int); |
3019eac3 | 1547 | |
d521ce57 | 1548 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1549 | struct die_info **, const gdb_byte *); |
93311388 | 1550 | |
e7c27a73 | 1551 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1552 | |
15d034d0 | 1553 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1554 | struct objfile *); |
71c25dea | 1555 | |
15d034d0 | 1556 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1557 | |
15d034d0 | 1558 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1559 | struct die_info *die, |
1560 | struct dwarf2_cu *cu); | |
1561 | ||
ca69b9e6 DE |
1562 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1563 | struct dwarf2_cu *cu); | |
1564 | ||
e142c38c | 1565 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1566 | struct dwarf2_cu **); |
9219021c | 1567 | |
d97bc12b DE |
1568 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1569 | ||
1570 | static void dump_die_for_error (struct die_info *); | |
1571 | ||
1572 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1573 | struct die_info *); | |
c906108c | 1574 | |
d97bc12b | 1575 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1576 | |
51545339 | 1577 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1578 | struct dwarf2_cu *); |
c906108c | 1579 | |
348e048f | 1580 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1581 | const struct attribute *, |
348e048f DE |
1582 | struct dwarf2_cu **); |
1583 | ||
10b3939b | 1584 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1585 | const struct attribute *, |
f2f0e013 | 1586 | struct dwarf2_cu **); |
c906108c | 1587 | |
348e048f | 1588 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1589 | const struct attribute *, |
348e048f DE |
1590 | struct dwarf2_cu **); |
1591 | ||
ac9ec31b DE |
1592 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1593 | struct dwarf2_cu *); | |
1594 | ||
1595 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1596 | const struct attribute *, |
ac9ec31b DE |
1597 | struct dwarf2_cu *); |
1598 | ||
ab432490 SM |
1599 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1600 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1601 | |
ab432490 SM |
1602 | static void read_signatured_type (signatured_type *sig_type, |
1603 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1604 | |
63e43d3a PMR |
1605 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1606 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1607 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1608 | |
c906108c SS |
1609 | /* memory allocation interface */ |
1610 | ||
7b5a2f43 | 1611 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1612 | |
b60c80d6 | 1613 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1614 | |
43f3e411 | 1615 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1616 | |
8cf6f0b1 TT |
1617 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1618 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1619 | const struct attribute *attr); |
8cf6f0b1 | 1620 | |
ff39bb5e | 1621 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1622 | struct symbol *sym, |
f1e6e072 TT |
1623 | struct dwarf2_cu *cu, |
1624 | int is_block); | |
4c2df51b | 1625 | |
d521ce57 TT |
1626 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1627 | const gdb_byte *info_ptr, | |
7c32eebb | 1628 | const struct abbrev_info *abbrev); |
4bb7a0a7 | 1629 | |
72bf9492 DJ |
1630 | static hashval_t partial_die_hash (const void *item); |
1631 | ||
1632 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1633 | ||
ae038cb0 | 1634 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 | 1635 | (sect_offset sect_off, unsigned int offset_in_dwz, |
976ca316 | 1636 | dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1637 | |
9816fde3 | 1638 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1639 | struct die_info *comp_unit_die, |
1640 | enum language pretend_language); | |
93311388 | 1641 | |
f792889a | 1642 | static struct type *set_die_type (struct die_info *, struct type *, |
57567375 | 1643 | struct dwarf2_cu *, bool = false); |
1c379e20 | 1644 | |
976ca316 | 1645 | static void create_all_comp_units (dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1646 | |
976ca316 | 1647 | static int create_all_type_units (dwarf2_per_objfile *per_objfile); |
1fd400ff | 1648 | |
ab432490 SM |
1649 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1650 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 1651 | dwarf2_cu *existing_cu, |
ab432490 SM |
1652 | bool skip_partial, |
1653 | enum language pretend_language); | |
10b3939b | 1654 | |
8fc0b21d | 1655 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1656 | enum language pretend_language); |
10b3939b | 1657 | |
8fc0b21d | 1658 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1659 | enum language pretend_language); |
f4dc4d17 | 1660 | |
10b3939b DJ |
1661 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1662 | struct dwarf2_per_cu_data *); | |
1663 | ||
ae038cb0 DJ |
1664 | static void dwarf2_mark (struct dwarf2_cu *); |
1665 | ||
b64f50a1 | 1666 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1667 | dwarf2_per_cu_data *per_cu, |
1668 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1669 | |
f792889a | 1670 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1671 | |
120ce1b5 SM |
1672 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1673 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1674 | enum language pretend_language); |
1675 | ||
976ca316 | 1676 | static void process_queue (dwarf2_per_objfile *per_objfile); |
9291a0cd | 1677 | |
b303c6f6 AB |
1678 | /* Class, the destructor of which frees all allocated queue entries. This |
1679 | will only have work to do if an error was thrown while processing the | |
1680 | dwarf. If no error was thrown then the queue entries should have all | |
1681 | been processed, and freed, as we went along. */ | |
1682 | ||
1683 | class dwarf2_queue_guard | |
1684 | { | |
1685 | public: | |
39856def TT |
1686 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1687 | : m_per_objfile (per_objfile) | |
1688 | { | |
08ac5771 SM |
1689 | gdb_assert (!m_per_objfile->per_bfd->queue.has_value ()); |
1690 | ||
1691 | m_per_objfile->per_bfd->queue.emplace (); | |
39856def | 1692 | } |
b303c6f6 AB |
1693 | |
1694 | /* Free any entries remaining on the queue. There should only be | |
1695 | entries left if we hit an error while processing the dwarf. */ | |
1696 | ~dwarf2_queue_guard () | |
1697 | { | |
08ac5771 SM |
1698 | gdb_assert (m_per_objfile->per_bfd->queue.has_value ()); |
1699 | ||
1700 | m_per_objfile->per_bfd->queue.reset (); | |
39856def | 1701 | } |
b303c6f6 | 1702 | |
39856def | 1703 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1704 | |
39856def TT |
1705 | private: |
1706 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1707 | }; |
1708 | ||
39856def TT |
1709 | dwarf2_queue_item::~dwarf2_queue_item () |
1710 | { | |
1711 | /* Anything still marked queued is likely to be in an | |
1712 | inconsistent state, so discard it. */ | |
1713 | if (per_cu->queued) | |
1714 | { | |
7188ed02 | 1715 | per_objfile->remove_cu (per_cu); |
39856def TT |
1716 | per_cu->queued = 0; |
1717 | } | |
1718 | } | |
1719 | ||
d721ba37 PA |
1720 | /* The return type of find_file_and_directory. Note, the enclosed |
1721 | string pointers are only valid while this object is valid. */ | |
1722 | ||
1723 | struct file_and_directory | |
1724 | { | |
1725 | /* The filename. This is never NULL. */ | |
1726 | const char *name; | |
1727 | ||
1728 | /* The compilation directory. NULL if not known. If we needed to | |
1729 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1730 | points directly to the DW_AT_comp_dir string attribute owned by | |
1731 | the obstack that owns the DIE. */ | |
1732 | const char *comp_dir; | |
1733 | ||
1734 | /* If we needed to build a new string for comp_dir, this is what | |
1735 | owns the storage. */ | |
1736 | std::string comp_dir_storage; | |
1737 | }; | |
1738 | ||
1739 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1740 | struct dwarf2_cu *cu); | |
9291a0cd | 1741 | |
298e9637 | 1742 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1743 | |
298e9637 | 1744 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1745 | |
57d63ce2 | 1746 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
976ca316 SM |
1747 | (dwarf2_per_objfile *per_objfile, struct dwp_file *dwp_file, |
1748 | const char *comp_dir, ULONGEST signature, int is_debug_types); | |
a2ce51a0 | 1749 | |
976ca316 | 1750 | static struct dwp_file *get_dwp_file (dwarf2_per_objfile *per_objfile); |
a2ce51a0 | 1751 | |
3019eac3 | 1752 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1753 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1754 | ULONGEST signature); | |
3019eac3 DE |
1755 | |
1756 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1757 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1758 | |
1b555f17 | 1759 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1760 | |
263db9a1 TT |
1761 | /* A unique pointer to a dwo_file. */ |
1762 | ||
51ac9db5 | 1763 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1764 | |
976ca316 | 1765 | static void process_cu_includes (dwarf2_per_objfile *per_objfile); |
95554aad | 1766 | |
1b80a9fa | 1767 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1768 | |
1769 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1770 | \f |
1771 | /* Various complaints about symbol reading that don't abort the process. */ | |
1772 | ||
4390d890 DE |
1773 | static void |
1774 | dwarf2_debug_line_missing_file_complaint (void) | |
1775 | { | |
b98664d3 | 1776 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1777 | } |
1778 | ||
1779 | static void | |
1780 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1781 | { | |
b98664d3 | 1782 | complaint (_(".debug_line section has line " |
4390d890 DE |
1783 | "program sequence without an end")); |
1784 | } | |
1785 | ||
1786 | static void | |
1787 | dwarf2_complex_location_expr_complaint (void) | |
1788 | { | |
b98664d3 | 1789 | complaint (_("location expression too complex")); |
4390d890 DE |
1790 | } |
1791 | ||
1792 | static void | |
1793 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1794 | int arg3) | |
1795 | { | |
b98664d3 | 1796 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1797 | arg1, arg2, arg3); |
1798 | } | |
1799 | ||
4390d890 DE |
1800 | static void |
1801 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1802 | { | |
b98664d3 | 1803 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1804 | arg1, arg2); |
1805 | } | |
527f3840 JK |
1806 | |
1807 | /* Hash function for line_header_hash. */ | |
1808 | ||
1809 | static hashval_t | |
1810 | line_header_hash (const struct line_header *ofs) | |
1811 | { | |
9c541725 | 1812 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1813 | } |
1814 | ||
1815 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1816 | ||
1817 | static hashval_t | |
1818 | line_header_hash_voidp (const void *item) | |
1819 | { | |
9a3c8263 | 1820 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1821 | |
1822 | return line_header_hash (ofs); | |
1823 | } | |
1824 | ||
1825 | /* Equality function for line_header_hash. */ | |
1826 | ||
1827 | static int | |
1828 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1829 | { | |
9a3c8263 SM |
1830 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1831 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1832 | |
9c541725 | 1833 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1834 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1835 | } | |
1836 | ||
4390d890 | 1837 | \f |
9291a0cd | 1838 | |
330cdd98 PA |
1839 | /* See declaration. */ |
1840 | ||
5989a64e SM |
1841 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1842 | bool can_copy_) | |
c3699833 SM |
1843 | : obfd (obfd), |
1844 | can_copy (can_copy_) | |
330cdd98 PA |
1845 | { |
1846 | if (names == NULL) | |
1847 | names = &dwarf2_elf_names; | |
1848 | ||
330cdd98 PA |
1849 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1850 | locate_sections (obfd, sec, *names); | |
1851 | } | |
1852 | ||
5989a64e | 1853 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1854 | { |
b76e467d | 1855 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1856 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1857 | |
b2bdb8cf | 1858 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1859 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1860 | |
5989a64e | 1861 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1862 | } |
1863 | ||
7188ed02 | 1864 | /* See read.h. */ |
330cdd98 PA |
1865 | |
1866 | void | |
7188ed02 | 1867 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1868 | { |
08ac5771 SM |
1869 | gdb_assert (!this->per_bfd->queue.has_value ()); |
1870 | ||
7188ed02 SM |
1871 | for (auto pair : m_dwarf2_cus) |
1872 | delete pair.second; | |
330cdd98 | 1873 | |
7188ed02 | 1874 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1875 | } |
1876 | ||
11ed8cad TT |
1877 | /* A helper class that calls free_cached_comp_units on |
1878 | destruction. */ | |
1879 | ||
1880 | class free_cached_comp_units | |
1881 | { | |
1882 | public: | |
1883 | ||
1884 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1885 | : m_per_objfile (per_objfile) | |
1886 | { | |
1887 | } | |
1888 | ||
1889 | ~free_cached_comp_units () | |
1890 | { | |
7188ed02 | 1891 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1892 | } |
1893 | ||
1894 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1895 | ||
1896 | private: | |
1897 | ||
1898 | dwarf2_per_objfile *m_per_objfile; | |
1899 | }; | |
1900 | ||
af758d11 SM |
1901 | /* See read.h. */ |
1902 | ||
1903 | bool | |
1904 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1905 | { | |
1906 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1907 | ||
1908 | return this->m_symtabs[per_cu->index] != nullptr; | |
1909 | } | |
1910 | ||
1911 | /* See read.h. */ | |
1912 | ||
1913 | compunit_symtab * | |
1914 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1915 | { | |
1916 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1917 | ||
1918 | return this->m_symtabs[per_cu->index]; | |
1919 | } | |
1920 | ||
1921 | /* See read.h. */ | |
1922 | ||
1923 | void | |
1924 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1925 | compunit_symtab *symtab) | |
1926 | { | |
1927 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1928 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1929 | ||
1930 | this->m_symtabs[per_cu->index] = symtab; | |
1931 | } | |
1932 | ||
c906108c | 1933 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1934 | information and return true if we have enough to do something. |
1935 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1936 | ELF names are used. CAN_COPY is true for formats where symbol |
1937 | interposition is possible and so symbol values must follow copy | |
1938 | relocation rules. */ | |
c906108c SS |
1939 | |
1940 | int | |
251d32d9 | 1941 | dwarf2_has_info (struct objfile *objfile, |
dda83cd7 | 1942 | const struct dwarf2_debug_sections *names, |
4b610737 | 1943 | bool can_copy) |
c906108c | 1944 | { |
97cbe998 SDJ |
1945 | if (objfile->flags & OBJF_READNEVER) |
1946 | return 0; | |
1947 | ||
976ca316 | 1948 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 1949 | |
976ca316 | 1950 | if (per_objfile == NULL) |
5989a64e | 1951 | { |
17ee85fc TT |
1952 | dwarf2_per_bfd *per_bfd; |
1953 | ||
1954 | /* We can share a "dwarf2_per_bfd" with other objfiles if the BFD | |
dda83cd7 | 1955 | doesn't require relocations and if there aren't partial symbols |
17ee85fc | 1956 | from some other reader. */ |
a8ad4f3c | 1957 | if (!objfile->has_partial_symbols () |
17ee85fc TT |
1958 | && !gdb_bfd_requires_relocations (objfile->obfd)) |
1959 | { | |
1960 | /* See if one has been created for this BFD yet. */ | |
1961 | per_bfd = dwarf2_per_bfd_bfd_data_key.get (objfile->obfd); | |
1962 | ||
1963 | if (per_bfd == nullptr) | |
1964 | { | |
1965 | /* No, create it now. */ | |
1966 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1967 | dwarf2_per_bfd_bfd_data_key.set (objfile->obfd, per_bfd); | |
1968 | } | |
1969 | } | |
1970 | else | |
1971 | { | |
1972 | /* No sharing possible, create one specifically for this objfile. */ | |
1973 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1974 | dwarf2_per_bfd_objfile_data_key.set (objfile, per_bfd); | |
1975 | } | |
5989a64e | 1976 | |
976ca316 | 1977 | per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); |
5989a64e | 1978 | } |
5bfd760d | 1979 | |
976ca316 SM |
1980 | return (!per_objfile->per_bfd->info.is_virtual |
1981 | && per_objfile->per_bfd->info.s.section != NULL | |
1982 | && !per_objfile->per_bfd->abbrev.is_virtual | |
1983 | && per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
1984 | } |
1985 | ||
330cdd98 | 1986 | /* See declaration. */ |
c906108c | 1987 | |
330cdd98 | 1988 | void |
5989a64e SM |
1989 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
1990 | const dwarf2_debug_sections &names) | |
c906108c | 1991 | { |
fd361982 | 1992 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1993 | |
dc7650b8 JK |
1994 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1995 | { | |
1996 | } | |
950b7495 KS |
1997 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1998 | > bfd_get_file_size (abfd)) | |
1999 | { | |
2000 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
2001 | warning (_("Discarding section %s which has a section size (%s" | |
2002 | ") larger than the file size [in module %s]"), | |
2003 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
2004 | bfd_get_filename (abfd)); | |
2005 | } | |
fbedd546 | 2006 | else if (names.info.matches (sectp->name)) |
c906108c | 2007 | { |
330cdd98 | 2008 | this->info.s.section = sectp; |
fd361982 | 2009 | this->info.size = bfd_section_size (sectp); |
c906108c | 2010 | } |
fbedd546 | 2011 | else if (names.abbrev.matches (sectp->name)) |
c906108c | 2012 | { |
330cdd98 | 2013 | this->abbrev.s.section = sectp; |
fd361982 | 2014 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2015 | } |
fbedd546 | 2016 | else if (names.line.matches (sectp->name)) |
c906108c | 2017 | { |
330cdd98 | 2018 | this->line.s.section = sectp; |
fd361982 | 2019 | this->line.size = bfd_section_size (sectp); |
c906108c | 2020 | } |
fbedd546 | 2021 | else if (names.loc.matches (sectp->name)) |
c906108c | 2022 | { |
330cdd98 | 2023 | this->loc.s.section = sectp; |
fd361982 | 2024 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2025 | } |
fbedd546 | 2026 | else if (names.loclists.matches (sectp->name)) |
43988095 | 2027 | { |
330cdd98 | 2028 | this->loclists.s.section = sectp; |
fd361982 | 2029 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2030 | } |
fbedd546 | 2031 | else if (names.macinfo.matches (sectp->name)) |
c906108c | 2032 | { |
330cdd98 | 2033 | this->macinfo.s.section = sectp; |
fd361982 | 2034 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2035 | } |
fbedd546 | 2036 | else if (names.macro.matches (sectp->name)) |
cf2c3c16 | 2037 | { |
330cdd98 | 2038 | this->macro.s.section = sectp; |
fd361982 | 2039 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2040 | } |
fbedd546 | 2041 | else if (names.str.matches (sectp->name)) |
c906108c | 2042 | { |
330cdd98 | 2043 | this->str.s.section = sectp; |
fd361982 | 2044 | this->str.size = bfd_section_size (sectp); |
c906108c | 2045 | } |
fbedd546 | 2046 | else if (names.str_offsets.matches (sectp->name)) |
18a8505e AT |
2047 | { |
2048 | this->str_offsets.s.section = sectp; | |
2049 | this->str_offsets.size = bfd_section_size (sectp); | |
2050 | } | |
fbedd546 | 2051 | else if (names.line_str.matches (sectp->name)) |
43988095 | 2052 | { |
330cdd98 | 2053 | this->line_str.s.section = sectp; |
fd361982 | 2054 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2055 | } |
fbedd546 | 2056 | else if (names.addr.matches (sectp->name)) |
3019eac3 | 2057 | { |
330cdd98 | 2058 | this->addr.s.section = sectp; |
fd361982 | 2059 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2060 | } |
fbedd546 | 2061 | else if (names.frame.matches (sectp->name)) |
b6af0555 | 2062 | { |
330cdd98 | 2063 | this->frame.s.section = sectp; |
fd361982 | 2064 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2065 | } |
fbedd546 | 2066 | else if (names.eh_frame.matches (sectp->name)) |
b6af0555 | 2067 | { |
330cdd98 | 2068 | this->eh_frame.s.section = sectp; |
fd361982 | 2069 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2070 | } |
fbedd546 | 2071 | else if (names.ranges.matches (sectp->name)) |
af34e669 | 2072 | { |
330cdd98 | 2073 | this->ranges.s.section = sectp; |
fd361982 | 2074 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2075 | } |
fbedd546 | 2076 | else if (names.rnglists.matches (sectp->name)) |
43988095 | 2077 | { |
330cdd98 | 2078 | this->rnglists.s.section = sectp; |
fd361982 | 2079 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2080 | } |
fbedd546 | 2081 | else if (names.types.matches (sectp->name)) |
348e048f | 2082 | { |
8b70b953 TT |
2083 | struct dwarf2_section_info type_section; |
2084 | ||
2085 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2086 | type_section.s.section = sectp; |
fd361982 | 2087 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2088 | |
fd5866f6 | 2089 | this->types.push_back (type_section); |
348e048f | 2090 | } |
fbedd546 | 2091 | else if (names.gdb_index.matches (sectp->name)) |
9291a0cd | 2092 | { |
330cdd98 | 2093 | this->gdb_index.s.section = sectp; |
fd361982 | 2094 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2095 | } |
fbedd546 | 2096 | else if (names.debug_names.matches (sectp->name)) |
927aa2e7 JK |
2097 | { |
2098 | this->debug_names.s.section = sectp; | |
fd361982 | 2099 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2100 | } |
fbedd546 | 2101 | else if (names.debug_aranges.matches (sectp->name)) |
927aa2e7 JK |
2102 | { |
2103 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2104 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2105 | } |
dce234bc | 2106 | |
fd361982 AM |
2107 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2108 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2109 | this->has_section_at_zero = true; |
c906108c SS |
2110 | } |
2111 | ||
dce234bc | 2112 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2113 | SECTION_NAME. */ |
af34e669 | 2114 | |
dce234bc | 2115 | void |
3017a003 | 2116 | dwarf2_get_section_info (struct objfile *objfile, |
dda83cd7 SM |
2117 | enum dwarf2_section_enum sect, |
2118 | asection **sectp, const gdb_byte **bufp, | |
2119 | bfd_size_type *sizep) | |
dce234bc | 2120 | { |
976ca316 | 2121 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
dce234bc | 2122 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2123 | |
2124 | /* We may see an objfile without any DWARF, in which case we just | |
2125 | return nothing. */ | |
976ca316 | 2126 | if (per_objfile == NULL) |
a3b2a86b TT |
2127 | { |
2128 | *sectp = NULL; | |
2129 | *bufp = NULL; | |
2130 | *sizep = 0; | |
2131 | return; | |
2132 | } | |
3017a003 TG |
2133 | switch (sect) |
2134 | { | |
2135 | case DWARF2_DEBUG_FRAME: | |
976ca316 | 2136 | info = &per_objfile->per_bfd->frame; |
3017a003 TG |
2137 | break; |
2138 | case DWARF2_EH_FRAME: | |
976ca316 | 2139 | info = &per_objfile->per_bfd->eh_frame; |
3017a003 TG |
2140 | break; |
2141 | default: | |
2142 | gdb_assert_not_reached ("unexpected section"); | |
2143 | } | |
dce234bc | 2144 | |
96b79293 | 2145 | info->read (objfile); |
dce234bc | 2146 | |
96b79293 | 2147 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2148 | *bufp = info->buffer; |
2149 | *sizep = info->size; | |
2150 | } | |
2151 | ||
9291a0cd | 2152 | \f |
39298a5d | 2153 | /* DWARF quick_symbol_functions support. */ |
7b9f3c50 DE |
2154 | |
2155 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2156 | unique line tables, so we maintain a separate table of all .debug_line | |
2157 | derived entries to support the sharing. | |
2158 | All the quick functions need is the list of file names. We discard the | |
2159 | line_header when we're done and don't need to record it here. */ | |
2160 | struct quick_file_names | |
2161 | { | |
094b34ac DE |
2162 | /* The data used to construct the hash key. */ |
2163 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2164 | |
2165 | /* The number of entries in file_names, real_names. */ | |
2166 | unsigned int num_file_names; | |
2167 | ||
2168 | /* The file names from the line table, after being run through | |
2169 | file_full_name. */ | |
2170 | const char **file_names; | |
2171 | ||
2172 | /* The file names from the line table after being run through | |
2173 | gdb_realpath. These are computed lazily. */ | |
2174 | const char **real_names; | |
2175 | }; | |
2176 | ||
2177 | /* When using the index (and thus not using psymtabs), each CU has an | |
2178 | object of this type. This is used to hold information needed by | |
2179 | the various "quick" methods. */ | |
2180 | struct dwarf2_per_cu_quick_data | |
2181 | { | |
2182 | /* The file table. This can be NULL if there was no file table | |
2183 | or it's currently not read in. | |
5989a64e | 2184 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2185 | struct quick_file_names *file_names; |
2186 | ||
7b9f3c50 DE |
2187 | /* A temporary mark bit used when iterating over all CUs in |
2188 | expand_symtabs_matching. */ | |
2189 | unsigned int mark : 1; | |
2190 | ||
2191 | /* True if we've tried to read the file table and found there isn't one. | |
2192 | There will be no point in trying to read it again next time. */ | |
2193 | unsigned int no_file_data : 1; | |
2194 | }; | |
2195 | ||
39298a5d TT |
2196 | struct dwarf2_base_index_functions : public quick_symbol_functions |
2197 | { | |
2198 | bool has_symbols (struct objfile *objfile) override; | |
2199 | ||
2200 | struct symtab *find_last_source_symtab (struct objfile *objfile) override; | |
2201 | ||
2202 | void forget_cached_source_info (struct objfile *objfile) override; | |
2203 | ||
2204 | bool map_symtabs_matching_filename | |
2205 | (struct objfile *objfile, const char *name, const char *real_path, | |
2206 | gdb::function_view<bool (symtab *)> callback) override; | |
2207 | ||
2208 | enum language lookup_global_symbol_language (struct objfile *objfile, | |
2209 | const char *name, | |
2210 | domain_enum domain, | |
2211 | bool *symbol_found_p) override | |
2212 | { | |
2213 | *symbol_found_p = false; | |
2214 | return language_unknown; | |
2215 | } | |
2216 | ||
2217 | void print_stats (struct objfile *objfile) override; | |
2218 | ||
2219 | void expand_all_symtabs (struct objfile *objfile) override; | |
2220 | ||
2221 | void expand_symtabs_with_fullname (struct objfile *objfile, | |
2222 | const char *fullname) override; | |
2223 | ||
2224 | struct compunit_symtab *find_pc_sect_compunit_symtab | |
2225 | (struct objfile *objfile, struct bound_minimal_symbol msymbol, | |
2226 | CORE_ADDR pc, struct obj_section *section, int warn_if_readin) override; | |
2227 | ||
2228 | struct compunit_symtab *find_compunit_symtab_by_address | |
2229 | (struct objfile *objfile, CORE_ADDR address) override | |
2230 | { | |
2231 | return nullptr; | |
2232 | } | |
2233 | ||
2234 | void map_symbol_filenames (struct objfile *objfile, | |
2235 | symbol_filename_ftype *fun, void *data, | |
2236 | int need_fullname) override; | |
2237 | }; | |
2238 | ||
2239 | struct dwarf2_gdb_index : public dwarf2_base_index_functions | |
2240 | { | |
2241 | struct compunit_symtab *lookup_symbol (struct objfile *objfile, | |
2242 | block_enum block_index, | |
2243 | const char *name, | |
2244 | domain_enum domain) override; | |
2245 | ||
2246 | void dump (struct objfile *objfile) override; | |
2247 | ||
2248 | void expand_symtabs_for_function (struct objfile *objfile, | |
2249 | const char *func_name) override; | |
2250 | ||
2251 | void map_matching_symbols | |
2252 | (struct objfile *, | |
2253 | const lookup_name_info &lookup_name, | |
2254 | domain_enum domain, | |
2255 | int global, | |
2256 | gdb::function_view<symbol_found_callback_ftype> callback, | |
2257 | symbol_compare_ftype *ordered_compare) override; | |
2258 | ||
2259 | void expand_symtabs_matching | |
2260 | (struct objfile *objfile, | |
2261 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
2262 | const lookup_name_info *lookup_name, | |
2263 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
2264 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
2265 | enum search_domain kind) override; | |
2266 | }; | |
2267 | ||
2268 | struct dwarf2_debug_names_index : public dwarf2_base_index_functions | |
2269 | { | |
2270 | struct compunit_symtab *lookup_symbol (struct objfile *objfile, | |
2271 | block_enum block_index, | |
2272 | const char *name, | |
2273 | domain_enum domain) override; | |
2274 | ||
2275 | void dump (struct objfile *objfile) override; | |
2276 | ||
2277 | void expand_symtabs_for_function (struct objfile *objfile, | |
2278 | const char *func_name) override; | |
2279 | ||
2280 | void map_matching_symbols | |
2281 | (struct objfile *, | |
2282 | const lookup_name_info &lookup_name, | |
2283 | domain_enum domain, | |
2284 | int global, | |
2285 | gdb::function_view<symbol_found_callback_ftype> callback, | |
2286 | symbol_compare_ftype *ordered_compare) override; | |
2287 | ||
2288 | void expand_symtabs_matching | |
2289 | (struct objfile *objfile, | |
2290 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
2291 | const lookup_name_info *lookup_name, | |
2292 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
2293 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
2294 | enum search_domain kind) override; | |
2295 | }; | |
2296 | ||
2297 | quick_symbol_functions_up | |
2298 | make_dwarf_gdb_index () | |
2299 | { | |
2300 | return quick_symbol_functions_up (new dwarf2_gdb_index); | |
2301 | } | |
2302 | ||
2303 | quick_symbol_functions_up | |
2304 | make_dwarf_debug_names () | |
2305 | { | |
2306 | return quick_symbol_functions_up (new dwarf2_debug_names_index); | |
2307 | } | |
2308 | ||
094b34ac DE |
2309 | /* Utility hash function for a stmt_list_hash. */ |
2310 | ||
2311 | static hashval_t | |
2312 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2313 | { | |
2314 | hashval_t v = 0; | |
2315 | ||
2316 | if (stmt_list_hash->dwo_unit != NULL) | |
2317 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2318 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2319 | return v; |
2320 | } | |
2321 | ||
2322 | /* Utility equality function for a stmt_list_hash. */ | |
2323 | ||
2324 | static int | |
2325 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2326 | const struct stmt_list_hash *rhs) | |
2327 | { | |
2328 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2329 | return 0; | |
2330 | if (lhs->dwo_unit != NULL | |
2331 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2332 | return 0; | |
2333 | ||
9c541725 | 2334 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2335 | } |
2336 | ||
7b9f3c50 DE |
2337 | /* Hash function for a quick_file_names. */ |
2338 | ||
2339 | static hashval_t | |
2340 | hash_file_name_entry (const void *e) | |
2341 | { | |
9a3c8263 SM |
2342 | const struct quick_file_names *file_data |
2343 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2344 | |
094b34ac | 2345 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2346 | } |
2347 | ||
2348 | /* Equality function for a quick_file_names. */ | |
2349 | ||
2350 | static int | |
2351 | eq_file_name_entry (const void *a, const void *b) | |
2352 | { | |
9a3c8263 SM |
2353 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2354 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2355 | |
094b34ac | 2356 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2357 | } |
2358 | ||
2359 | /* Delete function for a quick_file_names. */ | |
2360 | ||
2361 | static void | |
2362 | delete_file_name_entry (void *e) | |
2363 | { | |
9a3c8263 | 2364 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2365 | int i; |
2366 | ||
2367 | for (i = 0; i < file_data->num_file_names; ++i) | |
2368 | { | |
2369 | xfree ((void*) file_data->file_names[i]); | |
2370 | if (file_data->real_names) | |
2371 | xfree ((void*) file_data->real_names[i]); | |
2372 | } | |
2373 | ||
45940949 TT |
2374 | /* The space for the struct itself lives on the obstack, so we don't |
2375 | free it here. */ | |
7b9f3c50 DE |
2376 | } |
2377 | ||
2378 | /* Create a quick_file_names hash table. */ | |
2379 | ||
5895093f | 2380 | static htab_up |
7b9f3c50 DE |
2381 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2382 | { | |
5895093f TT |
2383 | return htab_up (htab_create_alloc (nr_initial_entries, |
2384 | hash_file_name_entry, eq_file_name_entry, | |
2385 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2386 | } |
9291a0cd | 2387 | |
ab432490 SM |
2388 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2389 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2390 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2391 | |
1b555f17 | 2392 | static dwarf2_cu * |
ab432490 SM |
2393 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2394 | bool skip_partial) | |
918dd910 | 2395 | { |
3019eac3 | 2396 | if (per_cu->is_debug_types) |
ab432490 | 2397 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2398 | else |
4a636814 SM |
2399 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
2400 | skip_partial, language_minimal); | |
918dd910 | 2401 | |
7188ed02 SM |
2402 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2403 | if (cu == nullptr) | |
1b555f17 | 2404 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2405 | |
7188ed02 | 2406 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2407 | |
7188ed02 | 2408 | return cu; |
918dd910 JK |
2409 | } |
2410 | ||
1350c3b4 | 2411 | /* Read in the symbols for PER_CU in the context of PER_OBJFILE. */ |
2fdf6df6 | 2412 | |
9291a0cd | 2413 | static void |
97a1449a | 2414 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2415 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2416 | { |
f4dc4d17 DE |
2417 | /* Skip type_unit_groups, reading the type units they contain |
2418 | is handled elsewhere. */ | |
197400e8 | 2419 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2420 | return; |
2421 | ||
08ac5771 SM |
2422 | { |
2423 | /* The destructor of dwarf2_queue_guard frees any entries left on | |
2424 | the queue. After this point we're guaranteed to leave this function | |
2425 | with the dwarf queue empty. */ | |
2426 | dwarf2_queue_guard q_guard (per_objfile); | |
89e63ee4 | 2427 | |
08ac5771 SM |
2428 | if (!per_objfile->symtab_set_p (per_cu)) |
2429 | { | |
2430 | queue_comp_unit (per_cu, per_objfile, language_minimal); | |
2431 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
2432 | ||
2433 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2434 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2435 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2436 | if (!per_cu->is_debug_types | |
2437 | && cu != NULL | |
2438 | && cu->dwo_unit != NULL | |
2439 | && per_objfile->per_bfd->index_table != NULL | |
2440 | && per_objfile->per_bfd->index_table->version <= 7 | |
2441 | /* DWP files aren't supported yet. */ | |
2442 | && get_dwp_file (per_objfile) == NULL) | |
2443 | queue_and_load_all_dwo_tus (cu); | |
2444 | } | |
9291a0cd | 2445 | |
08ac5771 SM |
2446 | process_queue (per_objfile); |
2447 | } | |
9291a0cd TT |
2448 | |
2449 | /* Age the cache, releasing compilation units that have not | |
2450 | been used recently. */ | |
976ca316 | 2451 | per_objfile->age_comp_units (); |
9291a0cd TT |
2452 | } |
2453 | ||
97a1449a SM |
2454 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2455 | the per-objfile for which this symtab is instantiated. | |
2456 | ||
2457 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2458 | |
43f3e411 | 2459 | static struct compunit_symtab * |
97a1449a | 2460 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2461 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2462 | bool skip_partial) |
9291a0cd | 2463 | { |
976ca316 | 2464 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2465 | |
976ca316 | 2466 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2467 | { |
976ca316 | 2468 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2469 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2470 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2471 | process_cu_includes (per_objfile); | |
9291a0cd | 2472 | } |
f194fefb | 2473 | |
976ca316 | 2474 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2475 | } |
2476 | ||
ff4c9fec | 2477 | /* See declaration. */ |
f4dc4d17 | 2478 | |
ff4c9fec | 2479 | dwarf2_per_cu_data * |
5989a64e | 2480 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2481 | { |
b76e467d | 2482 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2483 | { |
b76e467d | 2484 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2485 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2486 | return &this->all_type_units[index]->per_cu; |
2487 | } | |
f4dc4d17 | 2488 | |
ff4c9fec SM |
2489 | return this->all_comp_units[index]; |
2490 | } | |
f4dc4d17 | 2491 | |
ff4c9fec | 2492 | /* See declaration. */ |
2fdf6df6 | 2493 | |
ff4c9fec | 2494 | dwarf2_per_cu_data * |
5989a64e | 2495 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2496 | { |
b76e467d | 2497 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2498 | |
ff4c9fec | 2499 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2500 | } |
2501 | ||
ff4c9fec | 2502 | /* See declaration. */ |
f4dc4d17 | 2503 | |
ff4c9fec | 2504 | signatured_type * |
5989a64e | 2505 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2506 | { |
b2bdb8cf | 2507 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2508 | |
ff4c9fec | 2509 | return this->all_type_units[index]; |
1fd400ff TT |
2510 | } |
2511 | ||
d3473f0c TT |
2512 | /* See read.h. */ |
2513 | ||
2514 | dwarf2_per_cu_data * | |
5989a64e | 2515 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2516 | { |
2517 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2518 | result->per_bfd = this; |
d3473f0c TT |
2519 | result->index = m_num_psymtabs++; |
2520 | return result; | |
2521 | } | |
2522 | ||
2523 | /* See read.h. */ | |
2524 | ||
2525 | signatured_type * | |
5989a64e | 2526 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2527 | { |
2528 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2529 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2530 | result->per_cu.index = m_num_psymtabs++; |
2531 | return result; | |
2532 | } | |
2533 | ||
168c9250 | 2534 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2535 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2536 | |
2537 | static dwarf2_per_cu_data * | |
168c9250 SM |
2538 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2539 | struct dwarf2_section_info *section, | |
2540 | int is_dwz, | |
2541 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2542 | { |
168c9250 | 2543 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2544 | the_cu->sect_off = sect_off; |
2545 | the_cu->length = length; | |
4b514bc8 | 2546 | the_cu->section = section; |
168c9250 | 2547 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2548 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2549 | the_cu->is_dwz = is_dwz; |
2550 | return the_cu; | |
2551 | } | |
2552 | ||
2ec9a5e0 TT |
2553 | /* A helper for create_cus_from_index that handles a given list of |
2554 | CUs. */ | |
2fdf6df6 | 2555 | |
74a0d9f6 | 2556 | static void |
168c9250 | 2557 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2558 | const gdb_byte *cu_list, offset_type n_elements, |
2559 | struct dwarf2_section_info *section, | |
b76e467d | 2560 | int is_dwz) |
9291a0cd | 2561 | { |
12359b5e | 2562 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2563 | { |
74a0d9f6 | 2564 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2565 | |
2566 | sect_offset sect_off | |
2567 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2568 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2569 | cu_list += 2 * 8; |
2570 | ||
b76e467d | 2571 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2572 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2573 | length); | |
2574 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2575 | } |
9291a0cd TT |
2576 | } |
2577 | ||
2ec9a5e0 | 2578 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2579 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2580 | |
74a0d9f6 | 2581 | static void |
168c9250 | 2582 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2583 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2584 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2585 | { | |
168c9250 SM |
2586 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2587 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2588 | |
168c9250 SM |
2589 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2590 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2591 | |
2592 | if (dwz_elements == 0) | |
74a0d9f6 | 2593 | return; |
2ec9a5e0 | 2594 | |
168c9250 SM |
2595 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2596 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2597 | &dwz->info, 1); |
2ec9a5e0 TT |
2598 | } |
2599 | ||
1fd400ff | 2600 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2601 | |
74a0d9f6 | 2602 | static void |
12359b5e | 2603 | create_signatured_type_table_from_index |
168c9250 SM |
2604 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2605 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2606 | { |
168c9250 SM |
2607 | gdb_assert (per_bfd->all_type_units.empty ()); |
2608 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2609 | |
298e9637 | 2610 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2611 | |
12359b5e | 2612 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2613 | { |
52dc124a | 2614 | struct signatured_type *sig_type; |
9c541725 | 2615 | ULONGEST signature; |
1fd400ff | 2616 | void **slot; |
9c541725 | 2617 | cu_offset type_offset_in_tu; |
1fd400ff | 2618 | |
74a0d9f6 | 2619 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2620 | sect_offset sect_off |
2621 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2622 | type_offset_in_tu | |
2623 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2624 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2625 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2626 | bytes += 3 * 8; | |
2627 | ||
168c9250 | 2628 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2629 | sig_type->signature = signature; |
9c541725 | 2630 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2631 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2632 | sig_type->per_cu.section = section; |
9c541725 | 2633 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2634 | sig_type->per_cu.v.quick |
168c9250 | 2635 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2636 | struct dwarf2_per_cu_quick_data); |
2637 | ||
b0b6a987 | 2638 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2639 | *slot = sig_type; |
1fd400ff | 2640 | |
168c9250 | 2641 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2642 | } |
2643 | ||
168c9250 | 2644 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2645 | } |
2646 | ||
927aa2e7 JK |
2647 | /* Create the signatured type hash table from .debug_names. */ |
2648 | ||
2649 | static void | |
2650 | create_signatured_type_table_from_debug_names | |
976ca316 | 2651 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2652 | const mapped_debug_names &map, |
2653 | struct dwarf2_section_info *section, | |
2654 | struct dwarf2_section_info *abbrev_section) | |
2655 | { | |
976ca316 | 2656 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2657 | |
96b79293 TT |
2658 | section->read (objfile); |
2659 | abbrev_section->read (objfile); | |
927aa2e7 | 2660 | |
976ca316 SM |
2661 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
2662 | per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2663 | |
298e9637 | 2664 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2665 | |
2666 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2667 | { | |
2668 | struct signatured_type *sig_type; | |
927aa2e7 | 2669 | void **slot; |
927aa2e7 JK |
2670 | |
2671 | sect_offset sect_off | |
2672 | = (sect_offset) (extract_unsigned_integer | |
2673 | (map.tu_table_reordered + i * map.offset_size, | |
2674 | map.offset_size, | |
2675 | map.dwarf5_byte_order)); | |
2676 | ||
2677 | comp_unit_head cu_header; | |
976ca316 | 2678 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2679 | abbrev_section, |
927aa2e7 JK |
2680 | section->buffer + to_underlying (sect_off), |
2681 | rcuh_kind::TYPE); | |
2682 | ||
976ca316 | 2683 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2684 | sig_type->signature = cu_header.signature; |
2685 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2686 | sig_type->per_cu.is_debug_types = 1; | |
2687 | sig_type->per_cu.section = section; | |
2688 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2689 | sig_type->per_cu.v.quick |
976ca316 | 2690 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2691 | struct dwarf2_per_cu_quick_data); |
2692 | ||
b0b6a987 | 2693 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2694 | *slot = sig_type; |
2695 | ||
976ca316 | 2696 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2697 | } |
2698 | ||
976ca316 | 2699 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2700 | } |
2701 | ||
9291a0cd TT |
2702 | /* Read the address map data from the mapped index, and use it to |
2703 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2704 | |
9291a0cd | 2705 | static void |
976ca316 | 2706 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2707 | struct mapped_index *index) |
9291a0cd | 2708 | { |
976ca316 | 2709 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 2710 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2711 | const gdb_byte *iter, *end; |
9291a0cd | 2712 | struct addrmap *mutable_map; |
9291a0cd TT |
2713 | CORE_ADDR baseaddr; |
2714 | ||
8268c778 PA |
2715 | auto_obstack temp_obstack; |
2716 | ||
9291a0cd TT |
2717 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2718 | ||
f00a2de2 PA |
2719 | iter = index->address_table.data (); |
2720 | end = iter + index->address_table.size (); | |
9291a0cd | 2721 | |
b3b3bada | 2722 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2723 | |
2724 | while (iter < end) | |
2725 | { | |
2726 | ULONGEST hi, lo, cu_index; | |
2727 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2728 | iter += 8; | |
2729 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2730 | iter += 8; | |
2731 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2732 | iter += 4; | |
f652bce2 | 2733 | |
24a55014 | 2734 | if (lo > hi) |
f652bce2 | 2735 | { |
b98664d3 | 2736 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2737 | hex_string (lo), hex_string (hi)); |
24a55014 | 2738 | continue; |
f652bce2 | 2739 | } |
24a55014 | 2740 | |
976ca316 | 2741 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2742 | { |
b98664d3 | 2743 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2744 | (unsigned) cu_index); |
24a55014 | 2745 | continue; |
f652bce2 | 2746 | } |
24a55014 | 2747 | |
79748972 TT |
2748 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2749 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2750 | addrmap_set_empty (mutable_map, lo, hi - 1, |
976ca316 | 2751 | per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2752 | } |
2753 | ||
d320c2b5 | 2754 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2755 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2756 | } |
2757 | ||
927aa2e7 JK |
2758 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2759 | populate the objfile's psymtabs_addrmap. */ | |
2760 | ||
2761 | static void | |
976ca316 | 2762 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2763 | struct dwarf2_section_info *section) |
2764 | { | |
976ca316 | 2765 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2766 | bfd *abfd = objfile->obfd; |
08feed99 | 2767 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2768 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2769 | |
2770 | auto_obstack temp_obstack; | |
2771 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2772 | ||
2773 | std::unordered_map<sect_offset, | |
2774 | dwarf2_per_cu_data *, | |
2775 | gdb::hash_enum<sect_offset>> | |
2776 | debug_info_offset_to_per_cu; | |
976ca316 | 2777 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2778 | { |
927aa2e7 JK |
2779 | const auto insertpair |
2780 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2781 | if (!insertpair.second) | |
2782 | { | |
2783 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2784 | "debug_info_offset %s, ignoring .debug_aranges."), |
2785 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2786 | return; |
2787 | } | |
2788 | } | |
2789 | ||
96b79293 | 2790 | section->read (objfile); |
927aa2e7 JK |
2791 | |
2792 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2793 | ||
2794 | const gdb_byte *addr = section->buffer; | |
2795 | ||
2796 | while (addr < section->buffer + section->size) | |
2797 | { | |
2798 | const gdb_byte *const entry_addr = addr; | |
2799 | unsigned int bytes_read; | |
2800 | ||
2801 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2802 | &bytes_read); | |
2803 | addr += bytes_read; | |
2804 | ||
2805 | const gdb_byte *const entry_end = addr + entry_length; | |
2806 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2807 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2808 | if (addr + entry_length > section->buffer + section->size) | |
2809 | { | |
47e3f474 | 2810 | warning (_("Section .debug_aranges in %s entry at offset %s " |
dda83cd7 | 2811 | "length %s exceeds section length %s, " |
927aa2e7 | 2812 | "ignoring .debug_aranges."), |
47e3f474 TV |
2813 | objfile_name (objfile), |
2814 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2815 | plongest (bytes_read + entry_length), |
2816 | pulongest (section->size)); | |
2817 | return; | |
2818 | } | |
2819 | ||
2820 | /* The version number. */ | |
2821 | const uint16_t version = read_2_bytes (abfd, addr); | |
2822 | addr += 2; | |
2823 | if (version != 2) | |
2824 | { | |
47e3f474 | 2825 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2826 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2827 | objfile_name (objfile), |
2828 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2829 | return; |
2830 | } | |
2831 | ||
2832 | const uint64_t debug_info_offset | |
2833 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2834 | addr += offset_size; | |
2835 | const auto per_cu_it | |
2836 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2837 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2838 | { | |
47e3f474 | 2839 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2840 | "debug_info_offset %s does not exists, " |
2841 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2842 | objfile_name (objfile), |
2843 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2844 | pulongest (debug_info_offset)); |
2845 | return; | |
2846 | } | |
2847 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2848 | ||
2849 | const uint8_t address_size = *addr++; | |
2850 | if (address_size < 1 || address_size > 8) | |
2851 | { | |
47e3f474 | 2852 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2853 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2854 | objfile_name (objfile), |
2855 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2856 | return; |
2857 | } | |
2858 | ||
2859 | const uint8_t segment_selector_size = *addr++; | |
2860 | if (segment_selector_size != 0) | |
2861 | { | |
47e3f474 | 2862 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2863 | "segment_selector_size %u is not supported, " |
2864 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2865 | objfile_name (objfile), |
2866 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2867 | segment_selector_size); |
2868 | return; | |
2869 | } | |
2870 | ||
2871 | /* Must pad to an alignment boundary that is twice the address | |
dda83cd7 SM |
2872 | size. It is undocumented by the DWARF standard but GCC does |
2873 | use it. */ | |
927aa2e7 JK |
2874 | for (size_t padding = ((-(addr - section->buffer)) |
2875 | & (2 * address_size - 1)); | |
dda83cd7 | 2876 | padding > 0; padding--) |
927aa2e7 JK |
2877 | if (*addr++ != 0) |
2878 | { | |
47e3f474 | 2879 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2880 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2881 | objfile_name (objfile), |
2882 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2883 | return; |
2884 | } | |
2885 | ||
2886 | for (;;) | |
2887 | { | |
2888 | if (addr + 2 * address_size > entry_end) | |
2889 | { | |
47e3f474 | 2890 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2891 | "address list is not properly terminated, " |
2892 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2893 | objfile_name (objfile), |
2894 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2895 | return; |
2896 | } | |
2897 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2898 | dwarf5_byte_order); | |
2899 | addr += address_size; | |
2900 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2901 | dwarf5_byte_order); | |
2902 | addr += address_size; | |
2903 | if (start == 0 && length == 0) | |
2904 | break; | |
976ca316 | 2905 | if (start == 0 && !per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
2906 | { |
2907 | /* Symbol was eliminated due to a COMDAT group. */ | |
2908 | continue; | |
2909 | } | |
2910 | ULONGEST end = start + length; | |
79748972 TT |
2911 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2912 | - baseaddr); | |
2913 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2914 | - baseaddr); | |
927aa2e7 JK |
2915 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2916 | } | |
2917 | } | |
2918 | ||
d320c2b5 | 2919 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2920 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2921 | } |
2922 | ||
9291a0cd TT |
2923 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2924 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2925 | constant pool and return true. If NAME cannot be found, return |
2926 | false. */ | |
2fdf6df6 | 2927 | |
109483d9 | 2928 | static bool |
9291a0cd TT |
2929 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2930 | offset_type **vec_out) | |
2931 | { | |
0cf03b49 | 2932 | offset_type hash; |
9291a0cd | 2933 | offset_type slot, step; |
559a7a62 | 2934 | int (*cmp) (const char *, const char *); |
9291a0cd | 2935 | |
791afaa2 | 2936 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2937 | if (current_language->la_language == language_cplus |
45280282 IB |
2938 | || current_language->la_language == language_fortran |
2939 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2940 | { |
2941 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2942 | not contain any. */ | |
a8719064 | 2943 | |
72998fb3 | 2944 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2945 | { |
109483d9 | 2946 | without_params = cp_remove_params (name); |
0cf03b49 | 2947 | |
72998fb3 | 2948 | if (without_params != NULL) |
791afaa2 | 2949 | name = without_params.get (); |
0cf03b49 JK |
2950 | } |
2951 | } | |
2952 | ||
559a7a62 | 2953 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2954 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2955 | simulate our NAME being searched is also lowercased. */ |
2956 | hash = mapped_index_string_hash ((index->version == 4 | |
dda83cd7 | 2957 | && case_sensitivity == case_sensitive_off |
559a7a62 JK |
2958 | ? 5 : index->version), |
2959 | name); | |
2960 | ||
f00a2de2 PA |
2961 | slot = hash & (index->symbol_table.size () - 1); |
2962 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2963 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2964 | |
2965 | for (;;) | |
2966 | { | |
9291a0cd | 2967 | const char *str; |
f00a2de2 PA |
2968 | |
2969 | const auto &bucket = index->symbol_table[slot]; | |
2970 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2971 | return false; |
9291a0cd | 2972 | |
f00a2de2 | 2973 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2974 | if (!cmp (name, str)) |
9291a0cd TT |
2975 | { |
2976 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2977 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2978 | return true; |
9291a0cd TT |
2979 | } |
2980 | ||
f00a2de2 | 2981 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2982 | } |
2983 | } | |
2984 | ||
4485a1c1 SM |
2985 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2986 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2987 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2988 | ok to use deprecated sections. |
2989 | ||
2990 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2991 | out parameters that are filled in with information about the CU and | |
2992 | TU lists in the section. | |
2993 | ||
4485a1c1 | 2994 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2995 | |
d33bc52e | 2996 | static bool |
3810f182 | 2997 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2998 | bool deprecated_ok, |
2999 | gdb::array_view<const gdb_byte> buffer, | |
3000 | struct mapped_index *map, | |
3001 | const gdb_byte **cu_list, | |
3002 | offset_type *cu_list_elements, | |
3003 | const gdb_byte **types_list, | |
3004 | offset_type *types_list_elements) | |
3005 | { | |
3006 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3007 | |
9291a0cd | 3008 | /* Version check. */ |
4485a1c1 | 3009 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3010 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3011 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3012 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3013 | indices. */ |
831adc1f | 3014 | if (version < 4) |
481860b3 GB |
3015 | { |
3016 | static int warning_printed = 0; | |
3017 | if (!warning_printed) | |
3018 | { | |
3019 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3020 | filename); |
481860b3 GB |
3021 | warning_printed = 1; |
3022 | } | |
3023 | return 0; | |
3024 | } | |
3025 | /* Index version 4 uses a different hash function than index version | |
3026 | 5 and later. | |
3027 | ||
3028 | Versions earlier than 6 did not emit psymbols for inlined | |
3029 | functions. Using these files will cause GDB not to be able to | |
3030 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3031 | indices unless the user has done |
3032 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3033 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3034 | { |
3035 | static int warning_printed = 0; | |
3036 | if (!warning_printed) | |
3037 | { | |
e615022a DE |
3038 | warning (_("\ |
3039 | Skipping deprecated .gdb_index section in %s.\n\ | |
3040 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3041 | to use the section anyway."), | |
2ec9a5e0 | 3042 | filename); |
481860b3 GB |
3043 | warning_printed = 1; |
3044 | } | |
3045 | return 0; | |
3046 | } | |
796a7ff8 | 3047 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3048 | of the TU (for symbols coming from TUs), |
3049 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3050 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3051 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3052 | These are just performance bugs, and we can't distinguish gdb-generated | |
3053 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3054 | |
481860b3 | 3055 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3056 | longer backward compatible. */ |
796a7ff8 | 3057 | if (version > 8) |
594e8718 | 3058 | return 0; |
9291a0cd | 3059 | |
559a7a62 | 3060 | map->version = version; |
9291a0cd | 3061 | |
4485a1c1 | 3062 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3063 | |
4485a1c1 | 3064 | int i = 0; |
2ec9a5e0 TT |
3065 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3066 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3067 | / 8); | |
1fd400ff TT |
3068 | ++i; |
3069 | ||
2ec9a5e0 TT |
3070 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3071 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3072 | - MAYBE_SWAP (metadata[i])) | |
3073 | / 8); | |
987d643c | 3074 | ++i; |
1fd400ff | 3075 | |
f00a2de2 PA |
3076 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3077 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3078 | map->address_table | |
3079 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3080 | ++i; |
3081 | ||
f00a2de2 PA |
3082 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3083 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3084 | map->symbol_table | |
3085 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3086 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3087 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3088 | |
f00a2de2 | 3089 | ++i; |
f9d83a0b | 3090 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3091 | |
2ec9a5e0 TT |
3092 | return 1; |
3093 | } | |
3094 | ||
4485a1c1 SM |
3095 | /* Callback types for dwarf2_read_gdb_index. */ |
3096 | ||
3097 | typedef gdb::function_view | |
5989a64e | 3098 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3099 | get_gdb_index_contents_ftype; |
3100 | typedef gdb::function_view | |
3101 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3102 | get_gdb_index_contents_dwz_ftype; | |
3103 | ||
927aa2e7 | 3104 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3105 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3106 | ||
3107 | static int | |
4485a1c1 | 3108 | dwarf2_read_gdb_index |
976ca316 | 3109 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3110 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3111 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3112 | { |
2ec9a5e0 TT |
3113 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3114 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3115 | struct dwz_file *dwz; |
976ca316 | 3116 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3117 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3118 | |
4485a1c1 | 3119 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3120 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3121 | |
3122 | if (main_index_contents.empty ()) | |
3123 | return 0; | |
3124 | ||
3063847f | 3125 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3126 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3127 | use_deprecated_index_sections, |
3128 | main_index_contents, map.get (), &cu_list, | |
3129 | &cu_list_elements, &types_list, | |
3130 | &types_list_elements)) | |
2ec9a5e0 TT |
3131 | return 0; |
3132 | ||
0fefef59 | 3133 | /* Don't use the index if it's empty. */ |
3063847f | 3134 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3135 | return 0; |
3136 | ||
2ec9a5e0 TT |
3137 | /* If there is a .dwz file, read it so we can get its CU list as |
3138 | well. */ | |
f8c41851 | 3139 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3140 | if (dwz != NULL) |
2ec9a5e0 | 3141 | { |
2ec9a5e0 TT |
3142 | struct mapped_index dwz_map; |
3143 | const gdb_byte *dwz_types_ignore; | |
3144 | offset_type dwz_types_elements_ignore; | |
3145 | ||
4485a1c1 SM |
3146 | gdb::array_view<const gdb_byte> dwz_index_content |
3147 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3148 | ||
3149 | if (dwz_index_content.empty ()) | |
3150 | return 0; | |
3151 | ||
3810f182 | 3152 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3153 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3154 | &dwz_list, &dwz_list_elements, |
3155 | &dwz_types_ignore, | |
3156 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3157 | { |
3158 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3159 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3160 | return 0; |
3161 | } | |
3162 | } | |
3163 | ||
f8c41851 SM |
3164 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3165 | dwz_list_elements); | |
1fd400ff | 3166 | |
8b70b953 TT |
3167 | if (types_list_elements) |
3168 | { | |
8b70b953 TT |
3169 | /* We can only handle a single .debug_types when we have an |
3170 | index. */ | |
f8c41851 | 3171 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3172 | return 0; |
3173 | ||
f8c41851 | 3174 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3175 | |
f8c41851 | 3176 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3177 | types_list_elements); |
8b70b953 | 3178 | } |
9291a0cd | 3179 | |
976ca316 | 3180 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3181 | |
f8c41851 SM |
3182 | per_bfd->index_table = std::move (map); |
3183 | per_bfd->using_index = 1; | |
3184 | per_bfd->quick_file_names_table = | |
3185 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3186 | ||
3187 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent | |
3188 | objfiles using the same BFD. */ | |
3189 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
3190 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
9291a0cd TT |
3191 | |
3192 | return 1; | |
3193 | } | |
3194 | ||
dee91e82 | 3195 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3196 | |
dee91e82 DE |
3197 | static void |
3198 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
3e225074 | 3199 | struct die_info *comp_unit_die) |
9291a0cd | 3200 | { |
dee91e82 | 3201 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3202 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3203 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3204 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3205 | struct attribute *attr; |
7b9f3c50 DE |
3206 | void **slot; |
3207 | struct quick_file_names *qfn; | |
9291a0cd | 3208 | |
0186c6a7 DE |
3209 | gdb_assert (! this_cu->is_debug_types); |
3210 | ||
07261596 TT |
3211 | /* Our callers never want to match partial units -- instead they |
3212 | will match the enclosing full CU. */ | |
3213 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3214 | { | |
3215 | this_cu->v.quick->no_file_data = 1; | |
3216 | return; | |
3217 | } | |
3218 | ||
0186c6a7 | 3219 | lh_cu = this_cu; |
7b9f3c50 | 3220 | slot = NULL; |
dee91e82 | 3221 | |
fff8551c | 3222 | line_header_up lh; |
9c541725 | 3223 | sect_offset line_offset {}; |
fff8551c | 3224 | |
dee91e82 | 3225 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
d4df075e | 3226 | if (attr != nullptr && attr->form_is_unsigned ()) |
9291a0cd | 3227 | { |
7b9f3c50 DE |
3228 | struct quick_file_names find_entry; |
3229 | ||
d4df075e | 3230 | line_offset = (sect_offset) attr->as_unsigned (); |
7b9f3c50 DE |
3231 | |
3232 | /* We may have already read in this line header (TU line header sharing). | |
3233 | If we have we're done. */ | |
094b34ac | 3234 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3235 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3236 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3237 | &find_entry, INSERT); |
3238 | if (*slot != NULL) | |
3239 | { | |
9a3c8263 | 3240 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3241 | return; |
7b9f3c50 DE |
3242 | } |
3243 | ||
3019eac3 | 3244 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3245 | } |
3246 | if (lh == NULL) | |
3247 | { | |
094b34ac | 3248 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3249 | return; |
9291a0cd TT |
3250 | } |
3251 | ||
976ca316 | 3252 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3253 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3254 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3255 | gdb_assert (slot != NULL); |
3256 | *slot = qfn; | |
9291a0cd | 3257 | |
d721ba37 | 3258 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3259 | |
aa391654 TT |
3260 | int offset = 0; |
3261 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3262 | ++offset; | |
3263 | ||
7ba99d21 | 3264 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3265 | qfn->file_names = |
976ca316 | 3266 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3267 | qfn->num_file_names); |
aa391654 TT |
3268 | if (offset != 0) |
3269 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3270 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3271 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3272 | fnd.comp_dir).release (); | |
7b9f3c50 | 3273 | qfn->real_names = NULL; |
9291a0cd | 3274 | |
094b34ac | 3275 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3276 | } |
3277 | ||
3278 | /* A helper for the "quick" functions which attempts to read the line | |
3279 | table for THIS_CU. */ | |
3280 | ||
3281 | static struct quick_file_names * | |
ab432490 SM |
3282 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3283 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3284 | { |
0186c6a7 DE |
3285 | /* This should never be called for TUs. */ |
3286 | gdb_assert (! this_cu->is_debug_types); | |
3287 | /* Nor type unit groups. */ | |
197400e8 | 3288 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3289 | |
dee91e82 DE |
3290 | if (this_cu->v.quick->file_names != NULL) |
3291 | return this_cu->v.quick->file_names; | |
3292 | /* If we know there is no line data, no point in looking again. */ | |
3293 | if (this_cu->v.quick->no_file_data) | |
3294 | return NULL; | |
3295 | ||
ab432490 | 3296 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3297 | if (!reader.dummy_p) |
eb5dd737 | 3298 | dw2_get_file_names_reader (&reader, reader.comp_unit_die); |
dee91e82 DE |
3299 | |
3300 | if (this_cu->v.quick->no_file_data) | |
3301 | return NULL; | |
3302 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3303 | } |
3304 | ||
3305 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3306 | real path for a given file name from the line table. */ |
2fdf6df6 | 3307 | |
9291a0cd | 3308 | static const char * |
976ca316 | 3309 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3310 | struct quick_file_names *qfn, int index) |
9291a0cd | 3311 | { |
7b9f3c50 | 3312 | if (qfn->real_names == NULL) |
976ca316 | 3313 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3314 | qfn->num_file_names, const char *); |
9291a0cd | 3315 | |
7b9f3c50 | 3316 | if (qfn->real_names[index] == NULL) |
14278e1f | 3317 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3318 | |
7b9f3c50 | 3319 | return qfn->real_names[index]; |
9291a0cd TT |
3320 | } |
3321 | ||
39298a5d TT |
3322 | struct symtab * |
3323 | dwarf2_base_index_functions::find_last_source_symtab (struct objfile *objfile) | |
9291a0cd | 3324 | { |
976ca316 SM |
3325 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3326 | dwarf2_per_cu_data *dwarf_cu = per_objfile->per_bfd->all_comp_units.back (); | |
3327 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); | |
ae2de4f8 | 3328 | |
43f3e411 DE |
3329 | if (cust == NULL) |
3330 | return NULL; | |
ed2dc618 | 3331 | |
43f3e411 | 3332 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3333 | } |
3334 | ||
7b9f3c50 DE |
3335 | /* Traversal function for dw2_forget_cached_source_info. */ |
3336 | ||
3337 | static int | |
3338 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3339 | { |
7b9f3c50 | 3340 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3341 | |
7b9f3c50 | 3342 | if (file_data->real_names) |
9291a0cd | 3343 | { |
7b9f3c50 | 3344 | int i; |
9291a0cd | 3345 | |
7b9f3c50 | 3346 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3347 | { |
7b9f3c50 DE |
3348 | xfree ((void*) file_data->real_names[i]); |
3349 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3350 | } |
3351 | } | |
7b9f3c50 DE |
3352 | |
3353 | return 1; | |
3354 | } | |
3355 | ||
39298a5d TT |
3356 | void |
3357 | dwarf2_base_index_functions::forget_cached_source_info | |
3358 | (struct objfile *objfile) | |
7b9f3c50 | 3359 | { |
976ca316 | 3360 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3361 | |
976ca316 | 3362 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3363 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3364 | } |
3365 | ||
f8eba3c6 TT |
3366 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3367 | the symtabs and calls the iterator. */ | |
3368 | ||
3369 | static int | |
3370 | dw2_map_expand_apply (struct objfile *objfile, | |
3371 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3372 | const char *name, const char *real_path, |
14bc53a8 | 3373 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3374 | { |
43f3e411 | 3375 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3376 | |
3377 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3378 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3379 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3380 | return 0; |
3381 | ||
3382 | /* This may expand more than one symtab, and we want to iterate over | |
3383 | all of them. */ | |
97a1449a | 3384 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3385 | |
14bc53a8 PA |
3386 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3387 | last_made, callback); | |
f8eba3c6 TT |
3388 | } |
3389 | ||
3390 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3391 | ||
39298a5d TT |
3392 | bool |
3393 | dwarf2_base_index_functions::map_symtabs_matching_filename | |
14bc53a8 PA |
3394 | (struct objfile *objfile, const char *name, const char *real_path, |
3395 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3396 | { |
c011a4f4 | 3397 | const char *name_basename = lbasename (name); |
976ca316 | 3398 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 3399 | |
848e3e78 DE |
3400 | /* The rule is CUs specify all the files, including those used by |
3401 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3402 | |
976ca316 | 3403 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3404 | { |
3d7bb9d9 | 3405 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3406 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3407 | continue; |
3408 | ||
976ca316 | 3409 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3410 | if (file_data == NULL) |
9291a0cd TT |
3411 | continue; |
3412 | ||
b76e467d | 3413 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3414 | { |
7b9f3c50 | 3415 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3416 | const char *this_real_name; |
9291a0cd | 3417 | |
af529f8f | 3418 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3419 | { |
f5b95b50 | 3420 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3421 | callback)) |
3422 | return true; | |
288e77a7 | 3423 | continue; |
4aac40c8 | 3424 | } |
9291a0cd | 3425 | |
c011a4f4 DE |
3426 | /* Before we invoke realpath, which can get expensive when many |
3427 | files are involved, do a quick comparison of the basenames. */ | |
3428 | if (! basenames_may_differ | |
3429 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3430 | continue; | |
3431 | ||
976ca316 | 3432 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
da235a7c | 3433 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3434 | { |
da235a7c | 3435 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3436 | callback)) |
3437 | return true; | |
288e77a7 | 3438 | continue; |
da235a7c | 3439 | } |
9291a0cd | 3440 | |
da235a7c JK |
3441 | if (real_path != NULL) |
3442 | { | |
af529f8f JK |
3443 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3444 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3445 | if (this_real_name != NULL |
af529f8f | 3446 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3447 | { |
f5b95b50 | 3448 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3449 | callback)) |
3450 | return true; | |
288e77a7 | 3451 | continue; |
9291a0cd TT |
3452 | } |
3453 | } | |
3454 | } | |
3455 | } | |
3456 | ||
14bc53a8 | 3457 | return false; |
9291a0cd TT |
3458 | } |
3459 | ||
da51c347 DE |
3460 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3461 | ||
3462 | struct dw2_symtab_iterator | |
9291a0cd | 3463 | { |
ed2dc618 | 3464 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3465 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3466 | /* If set, only look for symbols that match that block. Valid values are |
3467 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3468 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3469 | /* The kind of symbol we're looking for. */ |
3470 | domain_enum domain; | |
3471 | /* The list of CUs from the index entry of the symbol, | |
3472 | or NULL if not found. */ | |
3473 | offset_type *vec; | |
3474 | /* The next element in VEC to look at. */ | |
3475 | int next; | |
3476 | /* The number of elements in VEC, or zero if there is no match. */ | |
3477 | int length; | |
8943b874 DE |
3478 | /* Have we seen a global version of the symbol? |
3479 | If so we can ignore all further global instances. | |
3480 | This is to work around gold/15646, inefficient gold-generated | |
3481 | indices. */ | |
3482 | int global_seen; | |
da51c347 | 3483 | }; |
9291a0cd | 3484 | |
e5f3ece2 | 3485 | /* Initialize the index symtab iterator ITER, common part. */ |
2fdf6df6 | 3486 | |
9291a0cd | 3487 | static void |
e5f3ece2 TV |
3488 | dw2_symtab_iter_init_common (struct dw2_symtab_iterator *iter, |
3489 | dwarf2_per_objfile *per_objfile, | |
3490 | gdb::optional<block_enum> block_index, | |
3491 | domain_enum domain) | |
da51c347 | 3492 | { |
976ca316 | 3493 | iter->per_objfile = per_objfile; |
da51c347 DE |
3494 | iter->block_index = block_index; |
3495 | iter->domain = domain; | |
3496 | iter->next = 0; | |
8943b874 | 3497 | iter->global_seen = 0; |
e5f3ece2 TV |
3498 | iter->vec = NULL; |
3499 | iter->length = 0; | |
3500 | } | |
da51c347 | 3501 | |
e5f3ece2 TV |
3502 | /* Initialize the index symtab iterator ITER, const char *NAME variant. */ |
3503 | ||
3504 | static void | |
3505 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3506 | dwarf2_per_objfile *per_objfile, | |
3507 | gdb::optional<block_enum> block_index, | |
3508 | domain_enum domain, | |
3509 | const char *name) | |
3510 | { | |
3511 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
ed2dc618 | 3512 | |
e5f3ece2 | 3513 | mapped_index *index = per_objfile->per_bfd->index_table.get (); |
ed2dc618 | 3514 | /* index is NULL if OBJF_READNOW. */ |
e5f3ece2 TV |
3515 | if (index == NULL) |
3516 | return; | |
3517 | ||
3518 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 | 3519 | iter->length = MAYBE_SWAP (*iter->vec); |
e5f3ece2 TV |
3520 | } |
3521 | ||
3522 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ | |
3523 | ||
3524 | static void | |
3525 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3526 | dwarf2_per_objfile *per_objfile, | |
3527 | gdb::optional<block_enum> block_index, | |
3528 | domain_enum domain, offset_type namei) | |
3529 | { | |
3530 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
3531 | ||
3532 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3533 | /* index is NULL if OBJF_READNOW. */ | |
3534 | if (index == NULL) | |
3535 | return; | |
3536 | ||
3537 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
3538 | const auto &bucket = index->symbol_table[namei]; | |
3539 | ||
3540 | iter->vec = (offset_type *) (index->constant_pool | |
3541 | + MAYBE_SWAP (bucket.vec)); | |
3542 | iter->length = MAYBE_SWAP (*iter->vec); | |
da51c347 DE |
3543 | } |
3544 | ||
3545 | /* Return the next matching CU or NULL if there are no more. */ | |
3546 | ||
3547 | static struct dwarf2_per_cu_data * | |
3548 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3549 | { | |
976ca316 | 3550 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3551 | |
da51c347 DE |
3552 | for ( ; iter->next < iter->length; ++iter->next) |
3553 | { | |
3554 | offset_type cu_index_and_attrs = | |
3555 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3556 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3557 | gdb_index_symbol_kind symbol_kind = |
3558 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3559 | /* Only check the symbol attributes if they're present. | |
3560 | Indices prior to version 7 don't record them, | |
3561 | and indices >= 7 may elide them for certain symbols | |
3562 | (gold does this). */ | |
3563 | int attrs_valid = | |
976ca316 | 3564 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3565 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3566 | ||
3190f0c6 | 3567 | /* Don't crash on bad data. */ |
976ca316 SM |
3568 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
3569 | + per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3570 | { |
b98664d3 | 3571 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3572 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3573 | continue; |
3574 | } | |
3575 | ||
976ca316 | 3576 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3577 | |
da51c347 | 3578 | /* Skip if already read in. */ |
976ca316 | 3579 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3580 | continue; |
3581 | ||
8943b874 DE |
3582 | /* Check static vs global. */ |
3583 | if (attrs_valid) | |
3584 | { | |
2b79f376 SM |
3585 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3586 | ||
3587 | if (iter->block_index.has_value ()) | |
3588 | { | |
3589 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3590 | ||
3591 | if (is_static != want_static) | |
3592 | continue; | |
3593 | } | |
3594 | ||
8943b874 | 3595 | /* Work around gold/15646. */ |
f030440d TV |
3596 | if (!is_static |
3597 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3598 | { | |
3599 | if (iter->global_seen) | |
3600 | continue; | |
3601 | ||
3602 | iter->global_seen = 1; | |
3603 | } | |
8943b874 | 3604 | } |
da51c347 DE |
3605 | |
3606 | /* Only check the symbol's kind if it has one. */ | |
3607 | if (attrs_valid) | |
3608 | { | |
3609 | switch (iter->domain) | |
3610 | { | |
3611 | case VAR_DOMAIN: | |
3612 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3613 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3614 | /* Some types are also in VAR_DOMAIN. */ | |
3615 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3616 | continue; | |
3617 | break; | |
3618 | case STRUCT_DOMAIN: | |
3619 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3620 | continue; | |
3621 | break; | |
3622 | case LABEL_DOMAIN: | |
3623 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3624 | continue; | |
3625 | break; | |
59c35742 AB |
3626 | case MODULE_DOMAIN: |
3627 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3628 | continue; | |
3629 | break; | |
da51c347 DE |
3630 | default: |
3631 | break; | |
3632 | } | |
3633 | } | |
3634 | ||
3635 | ++iter->next; | |
3636 | return per_cu; | |
3637 | } | |
3638 | ||
3639 | return NULL; | |
3640 | } | |
3641 | ||
39298a5d TT |
3642 | struct compunit_symtab * |
3643 | dwarf2_gdb_index::lookup_symbol (struct objfile *objfile, | |
3644 | block_enum block_index, | |
3645 | const char *name, domain_enum domain) | |
9291a0cd | 3646 | { |
43f3e411 | 3647 | struct compunit_symtab *stab_best = NULL; |
976ca316 | 3648 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 3649 | |
b5ec771e PA |
3650 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3651 | ||
ed2dc618 SM |
3652 | struct dw2_symtab_iterator iter; |
3653 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3654 | |
976ca316 | 3655 | dw2_symtab_iter_init (&iter, per_objfile, block_index, domain, name); |
9291a0cd | 3656 | |
ed2dc618 SM |
3657 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3658 | { | |
3659 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 3660 | struct compunit_symtab *stab |
976ca316 | 3661 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
ed2dc618 | 3662 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3663 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3664 | |
ed2dc618 SM |
3665 | sym = block_find_symbol (block, name, domain, |
3666 | block_find_non_opaque_type_preferred, | |
3667 | &with_opaque); | |
b2e2f908 | 3668 | |
ed2dc618 SM |
3669 | /* Some caution must be observed with overloaded functions |
3670 | and methods, since the index will not contain any overload | |
3671 | information (but NAME might contain it). */ | |
da51c347 | 3672 | |
ed2dc618 SM |
3673 | if (sym != NULL |
3674 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3675 | return stab; | |
3676 | if (with_opaque != NULL | |
3677 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3678 | stab_best = stab; | |
da51c347 | 3679 | |
ed2dc618 | 3680 | /* Keep looking through other CUs. */ |
9291a0cd | 3681 | } |
9291a0cd | 3682 | |
da51c347 | 3683 | return stab_best; |
9291a0cd TT |
3684 | } |
3685 | ||
39298a5d TT |
3686 | void |
3687 | dwarf2_base_index_functions::print_stats (struct objfile *objfile) | |
9291a0cd | 3688 | { |
976ca316 SM |
3689 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3690 | int total = (per_objfile->per_bfd->all_comp_units.size () | |
3691 | + per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3692 | int count = 0; |
9291a0cd | 3693 | |
ed2dc618 | 3694 | for (int i = 0; i < total; ++i) |
9291a0cd | 3695 | { |
976ca316 | 3696 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3697 | |
976ca316 | 3698 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3699 | ++count; |
3700 | } | |
e4a48d9d | 3701 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3702 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3703 | } | |
3704 | ||
779bd270 DE |
3705 | /* This dumps minimal information about the index. |
3706 | It is called via "mt print objfiles". | |
3707 | One use is to verify .gdb_index has been loaded by the | |
3708 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3709 | ||
39298a5d TT |
3710 | void |
3711 | dwarf2_gdb_index::dump (struct objfile *objfile) | |
9291a0cd | 3712 | { |
976ca316 | 3713 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3714 | |
976ca316 | 3715 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3716 | printf_filtered (".gdb_index:"); |
976ca316 | 3717 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3718 | { |
3719 | printf_filtered (" version %d\n", | |
976ca316 | 3720 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3721 | } |
3722 | else | |
3723 | printf_filtered (" faked for \"readnow\"\n"); | |
3724 | printf_filtered ("\n"); | |
9291a0cd TT |
3725 | } |
3726 | ||
39298a5d TT |
3727 | void |
3728 | dwarf2_gdb_index::expand_symtabs_for_function (struct objfile *objfile, | |
3729 | const char *func_name) | |
9291a0cd | 3730 | { |
976ca316 | 3731 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
da51c347 | 3732 | |
ed2dc618 SM |
3733 | struct dw2_symtab_iterator iter; |
3734 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3735 | |
976ca316 | 3736 | dw2_symtab_iter_init (&iter, per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3737 | |
ed2dc618 | 3738 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3739 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
da51c347 | 3740 | |
9291a0cd TT |
3741 | } |
3742 | ||
39298a5d TT |
3743 | void |
3744 | dwarf2_base_index_functions::expand_all_symtabs (struct objfile *objfile) | |
9291a0cd | 3745 | { |
976ca316 SM |
3746 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3747 | int total_units = (per_objfile->per_bfd->all_comp_units.size () | |
3748 | + per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3749 | |
ed2dc618 | 3750 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3751 | { |
976ca316 | 3752 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3753 | |
58f0c718 TT |
3754 | /* We don't want to directly expand a partial CU, because if we |
3755 | read it with the wrong language, then assertion failures can | |
3756 | be triggered later on. See PR symtab/23010. So, tell | |
3757 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3758 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3759 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3760 | } |
3761 | } | |
3762 | ||
39298a5d TT |
3763 | void |
3764 | dwarf2_base_index_functions::expand_symtabs_with_fullname | |
3765 | (struct objfile *objfile, const char *fullname) | |
9291a0cd | 3766 | { |
976ca316 | 3767 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
d4637a04 DE |
3768 | |
3769 | /* We don't need to consider type units here. | |
3770 | This is only called for examining code, e.g. expand_line_sal. | |
3771 | There can be an order of magnitude (or more) more type units | |
3772 | than comp units, and we avoid them if we can. */ | |
3773 | ||
976ca316 | 3774 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3775 | { |
3d7bb9d9 | 3776 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3777 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3778 | continue; |
3779 | ||
976ca316 | 3780 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3781 | if (file_data == NULL) |
9291a0cd TT |
3782 | continue; |
3783 | ||
b76e467d | 3784 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3785 | { |
652a8996 JK |
3786 | const char *this_fullname = file_data->file_names[j]; |
3787 | ||
3788 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3789 | { |
976ca316 | 3790 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
9291a0cd TT |
3791 | break; |
3792 | } | |
3793 | } | |
3794 | } | |
3795 | } | |
3796 | ||
9a0bacfb TV |
3797 | static void |
3798 | dw2_expand_symtabs_matching_symbol | |
3799 | (mapped_index_base &index, | |
3800 | const lookup_name_info &lookup_name_in, | |
3801 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3802 | enum search_domain kind, | |
fcf23d5b SM |
3803 | gdb::function_view<bool (offset_type)> match_callback, |
3804 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb TV |
3805 | |
3806 | static void | |
3807 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3808 | (dwarf2_per_cu_data *per_cu, |
3809 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3810 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3811 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3812 | ||
9291a0cd | 3813 | static void |
199b4314 TT |
3814 | dw2_map_matching_symbols |
3815 | (struct objfile *objfile, | |
b054970d | 3816 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3817 | int global, |
3818 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3819 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3820 | { |
1aa98955 | 3821 | /* Used for Ada. */ |
976ca316 | 3822 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3823 | |
9a0bacfb TV |
3824 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3825 | ||
976ca316 | 3826 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3827 | { |
976ca316 | 3828 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3829 | |
9a0bacfb TV |
3830 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3831 | auto matcher = [&] (const char *symname) | |
3832 | { | |
3833 | if (ordered_compare == nullptr) | |
3834 | return true; | |
3835 | return ordered_compare (symname, match_name) == 0; | |
3836 | }; | |
3837 | ||
3838 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3839 | [&] (offset_type namei) | |
3840 | { | |
3841 | struct dw2_symtab_iterator iter; | |
3842 | struct dwarf2_per_cu_data *per_cu; | |
3843 | ||
976ca316 | 3844 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3845 | namei); |
9a0bacfb | 3846 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3847 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3848 | nullptr); |
9a0bacfb | 3849 | return true; |
976ca316 | 3850 | }, per_objfile); |
9a0bacfb TV |
3851 | } |
3852 | else | |
3853 | { | |
3854 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3855 | proceed assuming all symtabs have been read in. */ | |
3856 | } | |
1aa98955 TV |
3857 | |
3858 | for (compunit_symtab *cust : objfile->compunits ()) | |
3859 | { | |
3860 | const struct block *block; | |
3861 | ||
3862 | if (cust == NULL) | |
3863 | continue; | |
3864 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3865 | if (!iterate_over_symbols_terminated (block, name, | |
3866 | domain, callback)) | |
3867 | return; | |
3868 | } | |
9291a0cd TT |
3869 | } |
3870 | ||
39298a5d TT |
3871 | void |
3872 | dwarf2_gdb_index::map_matching_symbols | |
3873 | (struct objfile *objfile, | |
3874 | const lookup_name_info &name, domain_enum domain, | |
3875 | int global, | |
3876 | gdb::function_view<symbol_found_callback_ftype> callback, | |
3877 | symbol_compare_ftype *ordered_compare) | |
3878 | { | |
3879 | dw2_map_matching_symbols (objfile, name, domain, global, callback, | |
3880 | ordered_compare); | |
3881 | } | |
3882 | ||
e1ef7d7a PA |
3883 | /* Starting from a search name, return the string that finds the upper |
3884 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3885 | list. Returns the empty string to indicate that the upper bound is | |
3886 | the end of the list. */ | |
3887 | ||
3888 | static std::string | |
3889 | make_sort_after_prefix_name (const char *search_name) | |
3890 | { | |
3891 | /* When looking to complete "func", we find the upper bound of all | |
3892 | symbols that start with "func" by looking for where we'd insert | |
3893 | the closest string that would follow "func" in lexicographical | |
3894 | order. Usually, that's "func"-with-last-character-incremented, | |
3895 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3896 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3897 | Especially mind the 0xff character, which is a valid character in | |
3898 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3899 | rule out compilers allowing it in identifiers. Note that | |
3900 | conveniently, strcmp/strcasecmp are specified to compare | |
3901 | characters interpreted as unsigned char. So what we do is treat | |
3902 | the whole string as a base 256 number composed of a sequence of | |
3903 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3904 | to 0, and carries 1 to the following more-significant position. | |
3905 | If the very first character in SEARCH_NAME ends up incremented | |
3906 | and carries/overflows, then the upper bound is the end of the | |
3907 | list. The string after the empty string is also the empty | |
3908 | string. | |
3909 | ||
3910 | Some examples of this operation: | |
3911 | ||
3912 | SEARCH_NAME => "+1" RESULT | |
3913 | ||
3914 | "abc" => "abd" | |
3915 | "ab\xff" => "ac" | |
3916 | "\xff" "a" "\xff" => "\xff" "b" | |
3917 | "\xff" => "" | |
3918 | "\xff\xff" => "" | |
3919 | "" => "" | |
3920 | ||
3921 | Then, with these symbols for example: | |
3922 | ||
3923 | func | |
3924 | func1 | |
3925 | fund | |
3926 | ||
3927 | completing "func" looks for symbols between "func" and | |
3928 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3929 | which finds "func" and "func1", but not "fund". | |
3930 | ||
3931 | And with: | |
3932 | ||
3933 | funcÿ (Latin1 'ÿ' [0xff]) | |
3934 | funcÿ1 | |
3935 | fund | |
3936 | ||
3937 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3938 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3939 | ||
3940 | And with: | |
3941 | ||
3942 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3943 | ÿÿ1 | |
3944 | ||
3945 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3946 | the end of the list. | |
3947 | */ | |
3948 | std::string after = search_name; | |
3949 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3950 | after.pop_back (); | |
3951 | if (!after.empty ()) | |
3952 | after.back () = (unsigned char) after.back () + 1; | |
3953 | return after; | |
3954 | } | |
3955 | ||
5c58de74 | 3956 | /* See declaration. */ |
61d96d7e | 3957 | |
5c58de74 PA |
3958 | std::pair<std::vector<name_component>::const_iterator, |
3959 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3960 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
3961 | (const lookup_name_info &lookup_name_without_params, language lang, |
3962 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 3963 | { |
5c58de74 PA |
3964 | auto *name_cmp |
3965 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3966 | |
3b00ef10 | 3967 | const char *lang_name |
e0802d59 | 3968 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3969 | |
3f563c84 PA |
3970 | /* Comparison function object for lower_bound that matches against a |
3971 | given symbol name. */ | |
3972 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3973 | const char *name) | |
3974 | { | |
fcf23d5b | 3975 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3976 | const char *elem_name = elem_qualified + elem.name_offset; |
3977 | return name_cmp (elem_name, name) < 0; | |
3978 | }; | |
3979 | ||
3980 | /* Comparison function object for upper_bound that matches against a | |
3981 | given symbol name. */ | |
3982 | auto lookup_compare_upper = [&] (const char *name, | |
3983 | const name_component &elem) | |
3984 | { | |
fcf23d5b | 3985 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3986 | const char *elem_name = elem_qualified + elem.name_offset; |
3987 | return name_cmp (name, elem_name) < 0; | |
3988 | }; | |
3989 | ||
5c58de74 PA |
3990 | auto begin = this->name_components.begin (); |
3991 | auto end = this->name_components.end (); | |
3f563c84 PA |
3992 | |
3993 | /* Find the lower bound. */ | |
3994 | auto lower = [&] () | |
3995 | { | |
3b00ef10 | 3996 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3997 | return begin; |
3998 | else | |
3b00ef10 | 3999 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
4000 | } (); |
4001 | ||
4002 | /* Find the upper bound. */ | |
4003 | auto upper = [&] () | |
4004 | { | |
5c58de74 | 4005 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4006 | { |
e1ef7d7a PA |
4007 | /* In completion mode, we want UPPER to point past all |
4008 | symbols names that have the same prefix. I.e., with | |
4009 | these symbols, and completing "func": | |
4010 | ||
4011 | function << lower bound | |
4012 | function1 | |
4013 | other_function << upper bound | |
4014 | ||
4015 | We find the upper bound by looking for the insertion | |
4016 | point of "func"-with-last-character-incremented, | |
4017 | i.e. "fund". */ | |
3b00ef10 | 4018 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 4019 | if (after.empty ()) |
3f563c84 | 4020 | return end; |
e6b2f5ef PA |
4021 | return std::lower_bound (lower, end, after.c_str (), |
4022 | lookup_compare_lower); | |
3f563c84 PA |
4023 | } |
4024 | else | |
3b00ef10 | 4025 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4026 | } (); |
4027 | ||
5c58de74 PA |
4028 | return {lower, upper}; |
4029 | } | |
4030 | ||
4031 | /* See declaration. */ | |
4032 | ||
4033 | void | |
fcf23d5b | 4034 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
4035 | { |
4036 | if (!this->name_components.empty ()) | |
4037 | return; | |
4038 | ||
4039 | this->name_components_casing = case_sensitivity; | |
4040 | auto *name_cmp | |
4041 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4042 | ||
4043 | /* The code below only knows how to break apart components of C++ | |
4044 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4045 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4046 | auto count = this->symbol_name_count (); |
4047 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4048 | { |
44ed8f3e | 4049 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4050 | continue; |
4051 | ||
fcf23d5b | 4052 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
4053 | |
4054 | /* Add each name component to the name component table. */ | |
4055 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4056 | |
4057 | if (strstr (name, "::") != nullptr) | |
4058 | { | |
4059 | for (unsigned int current_len = cp_find_first_component (name); | |
4060 | name[current_len] != '\0'; | |
4061 | current_len += cp_find_first_component (name + current_len)) | |
4062 | { | |
4063 | gdb_assert (name[current_len] == ':'); | |
4064 | this->name_components.push_back ({previous_len, idx}); | |
4065 | /* Skip the '::'. */ | |
4066 | current_len += 2; | |
4067 | previous_len = current_len; | |
4068 | } | |
4069 | } | |
4070 | else | |
5c58de74 | 4071 | { |
3b00ef10 TT |
4072 | /* Handle the Ada encoded (aka mangled) form here. */ |
4073 | for (const char *iter = strstr (name, "__"); | |
4074 | iter != nullptr; | |
4075 | iter = strstr (iter, "__")) | |
4076 | { | |
4077 | this->name_components.push_back ({previous_len, idx}); | |
4078 | iter += 2; | |
4079 | previous_len = iter - name; | |
4080 | } | |
5c58de74 | 4081 | } |
3b00ef10 | 4082 | |
5c58de74 PA |
4083 | this->name_components.push_back ({previous_len, idx}); |
4084 | } | |
4085 | ||
4086 | /* Sort name_components elements by name. */ | |
4087 | auto name_comp_compare = [&] (const name_component &left, | |
4088 | const name_component &right) | |
4089 | { | |
fcf23d5b SM |
4090 | const char *left_qualified |
4091 | = this->symbol_name_at (left.idx, per_objfile); | |
4092 | const char *right_qualified | |
4093 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
4094 | |
4095 | const char *left_name = left_qualified + left.name_offset; | |
4096 | const char *right_name = right_qualified + right.name_offset; | |
4097 | ||
4098 | return name_cmp (left_name, right_name) < 0; | |
4099 | }; | |
4100 | ||
4101 | std::sort (this->name_components.begin (), | |
4102 | this->name_components.end (), | |
4103 | name_comp_compare); | |
4104 | } | |
4105 | ||
4106 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4107 | mapped_index_base instead of the containing objfile. This is split |
4108 | to a separate function in order to be able to unit test the | |
4109 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4110 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4111 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4112 | |
4113 | static void | |
4114 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4115 | (mapped_index_base &index, |
5c58de74 PA |
4116 | const lookup_name_info &lookup_name_in, |
4117 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4118 | enum search_domain kind, | |
fcf23d5b SM |
4119 | gdb::function_view<bool (offset_type)> match_callback, |
4120 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4121 | { |
4122 | lookup_name_info lookup_name_without_params | |
4123 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4124 | |
4125 | /* Build the symbol name component sorted vector, if we haven't | |
4126 | yet. */ | |
fcf23d5b | 4127 | index.build_name_components (per_objfile); |
5c58de74 | 4128 | |
3f563c84 PA |
4129 | /* The same symbol may appear more than once in the range though. |
4130 | E.g., if we're looking for symbols that complete "w", and we have | |
4131 | a symbol named "w1::w2", we'll find the two name components for | |
4132 | that same symbol in the range. To be sure we only call the | |
4133 | callback once per symbol, we first collect the symbol name | |
4134 | indexes that matched in a temporary vector and ignore | |
4135 | duplicates. */ | |
4136 | std::vector<offset_type> matches; | |
3f563c84 | 4137 | |
3b00ef10 TT |
4138 | struct name_and_matcher |
4139 | { | |
4140 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4141 | const char *name; |
3b00ef10 TT |
4142 | |
4143 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4144 | { |
ecc6c606 | 4145 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4146 | } |
4147 | }; | |
4148 | ||
4149 | /* A vector holding all the different symbol name matchers, for all | |
4150 | languages. */ | |
4151 | std::vector<name_and_matcher> matchers; | |
4152 | ||
4153 | for (int i = 0; i < nr_languages; i++) | |
4154 | { | |
4155 | enum language lang_e = (enum language) i; | |
4156 | ||
4157 | const language_defn *lang = language_def (lang_e); | |
4158 | symbol_name_matcher_ftype *name_matcher | |
c9debfb9 | 4159 | = lang->get_symbol_name_matcher (lookup_name_without_params); |
3f563c84 | 4160 | |
3b00ef10 | 4161 | name_and_matcher key { |
dda83cd7 | 4162 | name_matcher, |
3b00ef10 TT |
4163 | lookup_name_without_params.language_lookup_name (lang_e) |
4164 | }; | |
4165 | ||
4166 | /* Don't insert the same comparison routine more than once. | |
4167 | Note that we do this linear walk. This is not a problem in | |
4168 | practice because the number of supported languages is | |
4169 | low. */ | |
4170 | if (std::find (matchers.begin (), matchers.end (), key) | |
4171 | != matchers.end ()) | |
9291a0cd | 4172 | continue; |
3b00ef10 TT |
4173 | matchers.push_back (std::move (key)); |
4174 | ||
4175 | auto bounds | |
4176 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 4177 | lang_e, per_objfile); |
3b00ef10 TT |
4178 | |
4179 | /* Now for each symbol name in range, check to see if we have a name | |
4180 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4181 | ||
4182 | for (; bounds.first != bounds.second; ++bounds.first) | |
4183 | { | |
fcf23d5b SM |
4184 | const char *qualified |
4185 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
4186 | |
4187 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4188 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4189 | continue; | |
9291a0cd | 4190 | |
3b00ef10 TT |
4191 | matches.push_back (bounds.first->idx); |
4192 | } | |
3f563c84 PA |
4193 | } |
4194 | ||
4195 | std::sort (matches.begin (), matches.end ()); | |
4196 | ||
4197 | /* Finally call the callback, once per match. */ | |
4198 | ULONGEST prev = -1; | |
4199 | for (offset_type idx : matches) | |
4200 | { | |
4201 | if (prev != idx) | |
4202 | { | |
3b00ef10 TT |
4203 | if (!match_callback (idx)) |
4204 | break; | |
3f563c84 PA |
4205 | prev = idx; |
4206 | } | |
4207 | } | |
4208 | ||
4209 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4210 | (offset_type)-1 are both possible values. */ | |
4211 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4212 | } | |
4213 | ||
c62446b1 PA |
4214 | #if GDB_SELF_TEST |
4215 | ||
4216 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4217 | ||
a3c5fafd PA |
4218 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4219 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4220 | mapped_index_base interface. Builds an index from the symbol list | |
4221 | passed as parameter to the constructor. */ | |
4222 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4223 | { |
4224 | public: | |
a3c5fafd PA |
4225 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4226 | : m_symbol_table (symbols) | |
c62446b1 PA |
4227 | {} |
4228 | ||
a3c5fafd | 4229 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4230 | |
a3c5fafd | 4231 | /* Return the number of names in the symbol table. */ |
632e107b | 4232 | size_t symbol_name_count () const override |
c62446b1 | 4233 | { |
a3c5fafd | 4234 | return m_symbol_table.size (); |
c62446b1 PA |
4235 | } |
4236 | ||
a3c5fafd | 4237 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
4238 | const char *symbol_name_at |
4239 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
4240 | { |
4241 | return m_symbol_table[idx]; | |
4242 | } | |
c62446b1 | 4243 | |
a3c5fafd PA |
4244 | private: |
4245 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4246 | }; |
4247 | ||
4248 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4249 | string, to pass to print routines. */ | |
4250 | ||
4251 | static const char * | |
4252 | string_or_null (const char *str) | |
4253 | { | |
4254 | return str != NULL ? str : "<null>"; | |
4255 | } | |
4256 | ||
4257 | /* Check if a lookup_name_info built from | |
4258 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4259 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4260 | matching order. If no match expected, then an empty list is | |
4261 | specified. Returns true on success. On failure prints a warning | |
4262 | indicating the file:line that failed, and returns false. */ | |
4263 | ||
4264 | static bool | |
4265 | check_match (const char *file, int line, | |
4266 | mock_mapped_index &mock_index, | |
4267 | const char *name, symbol_name_match_type match_type, | |
4268 | bool completion_mode, | |
fcf23d5b SM |
4269 | std::initializer_list<const char *> expected_list, |
4270 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4271 | { |
4272 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4273 | ||
4274 | bool matched = true; | |
4275 | ||
4276 | auto mismatch = [&] (const char *expected_str, | |
4277 | const char *got) | |
4278 | { | |
4279 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4280 | "expected=\"%s\", got=\"%s\"\n"), | |
4281 | file, line, | |
4282 | (match_type == symbol_name_match_type::FULL | |
4283 | ? "FULL" : "WILD"), | |
4284 | name, string_or_null (expected_str), string_or_null (got)); | |
4285 | matched = false; | |
4286 | }; | |
4287 | ||
4288 | auto expected_it = expected_list.begin (); | |
4289 | auto expected_end = expected_list.end (); | |
4290 | ||
a3c5fafd | 4291 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4292 | NULL, ALL_DOMAIN, |
4293 | [&] (offset_type idx) | |
4294 | { | |
fcf23d5b | 4295 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4296 | const char *expected_str |
4297 | = expected_it == expected_end ? NULL : *expected_it++; | |
4298 | ||
4299 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4300 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4301 | return true; |
fcf23d5b | 4302 | }, per_objfile); |
c62446b1 PA |
4303 | |
4304 | const char *expected_str | |
4305 | = expected_it == expected_end ? NULL : *expected_it++; | |
4306 | if (expected_str != NULL) | |
4307 | mismatch (expected_str, NULL); | |
4308 | ||
4309 | return matched; | |
4310 | } | |
4311 | ||
4312 | /* The symbols added to the mock mapped_index for testing (in | |
4313 | canonical form). */ | |
4314 | static const char *test_symbols[] = { | |
4315 | "function", | |
4316 | "std::bar", | |
4317 | "std::zfunction", | |
4318 | "std::zfunction2", | |
4319 | "w1::w2", | |
4320 | "ns::foo<char*>", | |
4321 | "ns::foo<int>", | |
4322 | "ns::foo<long>", | |
a20714ff PA |
4323 | "ns2::tmpl<int>::foo2", |
4324 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4325 | |
e1ef7d7a PA |
4326 | /* These are used to check that the increment-last-char in the |
4327 | matching algorithm for completion doesn't match "t1_fund" when | |
4328 | completing "t1_func". */ | |
4329 | "t1_func", | |
4330 | "t1_func1", | |
4331 | "t1_fund", | |
4332 | "t1_fund1", | |
4333 | ||
4334 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4335 | cp-name-parser understands this as a single identifier ("função" | |
4336 | is "function" in PT). */ | |
4337 | u8"u8função", | |
4338 | ||
4339 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4340 | "yfunc\377", | |
4341 | ||
4342 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4343 | "\377", | |
4344 | "\377\377123", | |
4345 | ||
c62446b1 PA |
4346 | /* A name with all sorts of complications. Starts with "z" to make |
4347 | it easier for the completion tests below. */ | |
4348 | #define Z_SYM_NAME \ | |
4349 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4350 | "::tuple<(anonymous namespace)::ui*, " \ | |
4351 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4352 | ||
4353 | Z_SYM_NAME | |
4354 | }; | |
4355 | ||
a3c5fafd PA |
4356 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4357 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4358 | in completion mode. */ | |
5c58de74 PA |
4359 | |
4360 | static bool | |
a3c5fafd | 4361 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4362 | const char *search_name, |
fcf23d5b SM |
4363 | gdb::array_view<const char *> expected_syms, |
4364 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4365 | { |
4366 | lookup_name_info lookup_name (search_name, | |
4367 | symbol_name_match_type::FULL, true); | |
4368 | ||
3b00ef10 | 4369 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4370 | language_cplus, |
4371 | per_objfile); | |
5c58de74 PA |
4372 | |
4373 | size_t distance = std::distance (bounds.first, bounds.second); | |
4374 | if (distance != expected_syms.size ()) | |
4375 | return false; | |
4376 | ||
4377 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4378 | { | |
4379 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4380 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4381 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4382 | return false; | |
4383 | } | |
4384 | ||
4385 | return true; | |
4386 | } | |
4387 | ||
4388 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4389 | method. */ | |
4390 | ||
c62446b1 | 4391 | static void |
5c58de74 PA |
4392 | test_mapped_index_find_name_component_bounds () |
4393 | { | |
4394 | mock_mapped_index mock_index (test_symbols); | |
4395 | ||
fcf23d5b | 4396 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4397 | |
4398 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4399 | method in completion mode. */ | |
4400 | { | |
4401 | static const char *expected_syms[] = { | |
4402 | "t1_func", | |
4403 | "t1_func1", | |
5c58de74 PA |
4404 | }; |
4405 | ||
fcf23d5b SM |
4406 | SELF_CHECK (check_find_bounds_finds |
4407 | (mock_index, "t1_func", expected_syms, | |
4408 | NULL /* per_objfile */)); | |
5c58de74 PA |
4409 | } |
4410 | ||
4411 | /* Check that the increment-last-char in the name matching algorithm | |
4412 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4413 | { | |
4414 | static const char *expected_syms1[] = { | |
4415 | "\377", | |
4416 | "\377\377123", | |
4417 | }; | |
fcf23d5b SM |
4418 | SELF_CHECK (check_find_bounds_finds |
4419 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4420 | |
4421 | static const char *expected_syms2[] = { | |
4422 | "\377\377123", | |
4423 | }; | |
fcf23d5b SM |
4424 | SELF_CHECK (check_find_bounds_finds |
4425 | (mock_index, "\377\377", expected_syms2, | |
4426 | NULL /* per_objfile */)); | |
5c58de74 PA |
4427 | } |
4428 | } | |
4429 | ||
4430 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4431 | ||
4432 | static void | |
4433 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4434 | { |
4435 | mock_mapped_index mock_index (test_symbols); | |
4436 | ||
4437 | /* We let all tests run until the end even if some fails, for debug | |
4438 | convenience. */ | |
4439 | bool any_mismatch = false; | |
4440 | ||
4441 | /* Create the expected symbols list (an initializer_list). Needed | |
4442 | because lists have commas, and we need to pass them to CHECK, | |
4443 | which is a macro. */ | |
4444 | #define EXPECT(...) { __VA_ARGS__ } | |
4445 | ||
4446 | /* Wrapper for check_match that passes down the current | |
4447 | __FILE__/__LINE__. */ | |
4448 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4449 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4450 | mock_index, \ | |
4451 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4452 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4453 | |
4454 | /* Identity checks. */ | |
4455 | for (const char *sym : test_symbols) | |
4456 | { | |
4457 | /* Should be able to match all existing symbols. */ | |
4458 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4459 | EXPECT (sym)); | |
4460 | ||
4461 | /* Should be able to match all existing symbols with | |
4462 | parameters. */ | |
4463 | std::string with_params = std::string (sym) + "(int)"; | |
4464 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4465 | EXPECT (sym)); | |
4466 | ||
4467 | /* Should be able to match all existing symbols with | |
4468 | parameters and qualifiers. */ | |
4469 | with_params = std::string (sym) + " ( int ) const"; | |
4470 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4471 | EXPECT (sym)); | |
4472 | ||
4473 | /* This should really find sym, but cp-name-parser.y doesn't | |
4474 | know about lvalue/rvalue qualifiers yet. */ | |
4475 | with_params = std::string (sym) + " ( int ) &&"; | |
4476 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4477 | {}); | |
4478 | } | |
4479 | ||
e1ef7d7a PA |
4480 | /* Check that the name matching algorithm for completion doesn't get |
4481 | confused with Latin1 'ÿ' / 0xff. */ | |
4482 | { | |
4483 | static const char str[] = "\377"; | |
4484 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4485 | EXPECT ("\377", "\377\377123")); | |
4486 | } | |
4487 | ||
4488 | /* Check that the increment-last-char in the matching algorithm for | |
4489 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4490 | { | |
4491 | static const char str[] = "t1_func"; | |
4492 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4493 | EXPECT ("t1_func", "t1_func1")); | |
4494 | } | |
4495 | ||
c62446b1 PA |
4496 | /* Check that completion mode works at each prefix of the expected |
4497 | symbol name. */ | |
4498 | { | |
4499 | static const char str[] = "function(int)"; | |
4500 | size_t len = strlen (str); | |
4501 | std::string lookup; | |
4502 | ||
4503 | for (size_t i = 1; i < len; i++) | |
4504 | { | |
4505 | lookup.assign (str, i); | |
4506 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4507 | EXPECT ("function")); | |
4508 | } | |
4509 | } | |
4510 | ||
4511 | /* While "w" is a prefix of both components, the match function | |
4512 | should still only be called once. */ | |
4513 | { | |
4514 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4515 | EXPECT ("w1::w2")); | |
a20714ff PA |
4516 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4517 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4518 | } |
4519 | ||
4520 | /* Same, with a "complicated" symbol. */ | |
4521 | { | |
4522 | static const char str[] = Z_SYM_NAME; | |
4523 | size_t len = strlen (str); | |
4524 | std::string lookup; | |
4525 | ||
4526 | for (size_t i = 1; i < len; i++) | |
4527 | { | |
4528 | lookup.assign (str, i); | |
4529 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4530 | EXPECT (Z_SYM_NAME)); | |
4531 | } | |
4532 | } | |
4533 | ||
4534 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4535 | { | |
4536 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4537 | {}); | |
4538 | } | |
4539 | ||
4540 | /* A complete symbol with parameters matches any overload, since the | |
4541 | index has no overload info. */ | |
4542 | { | |
4543 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4544 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4545 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4546 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4547 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4548 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4549 | } |
4550 | ||
4551 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4552 | template argument list. */ | |
4553 | { | |
4554 | static const char expected[] = "ns::foo<int>"; | |
4555 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4556 | EXPECT (expected)); | |
a20714ff PA |
4557 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4558 | EXPECT (expected)); | |
c62446b1 PA |
4559 | } |
4560 | ||
4561 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4562 | template argument list that includes a pointer. */ | |
4563 | { | |
4564 | static const char expected[] = "ns::foo<char*>"; | |
4565 | /* Try both completion and non-completion modes. */ | |
4566 | static const bool completion_mode[2] = {false, true}; | |
4567 | for (size_t i = 0; i < 2; i++) | |
4568 | { | |
4569 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4570 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4571 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4572 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4573 | |
4574 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4575 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4576 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4577 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4578 | } |
4579 | } | |
4580 | ||
4581 | { | |
4582 | /* Check method qualifiers are ignored. */ | |
4583 | static const char expected[] = "ns::foo<char*>"; | |
4584 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4585 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4586 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4587 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4588 | CHECK_MATCH ("foo < char * > ( int ) const", |
4589 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4590 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4591 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4592 | } |
4593 | ||
4594 | /* Test lookup names that don't match anything. */ | |
4595 | { | |
a20714ff PA |
4596 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4597 | {}); | |
4598 | ||
c62446b1 PA |
4599 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4600 | {}); | |
4601 | } | |
4602 | ||
a20714ff PA |
4603 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4604 | which should not be confused with a parameter list. */ | |
4605 | { | |
4606 | static const char *syms[] = { | |
4607 | "A::B::C", | |
4608 | "B::C", | |
4609 | "C", | |
4610 | "A :: B :: C ( int )", | |
4611 | "B :: C ( int )", | |
4612 | "C ( int )", | |
4613 | }; | |
4614 | ||
4615 | for (const char *s : syms) | |
4616 | { | |
4617 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4618 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4619 | } | |
4620 | } | |
4621 | ||
4622 | { | |
4623 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4624 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4625 | EXPECT (expected)); | |
4626 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4627 | EXPECT (expected)); | |
4628 | } | |
4629 | ||
c62446b1 PA |
4630 | SELF_CHECK (!any_mismatch); |
4631 | ||
4632 | #undef EXPECT | |
4633 | #undef CHECK_MATCH | |
4634 | } | |
4635 | ||
5c58de74 PA |
4636 | static void |
4637 | run_test () | |
4638 | { | |
4639 | test_mapped_index_find_name_component_bounds (); | |
4640 | test_dw2_expand_symtabs_matching_symbol (); | |
4641 | } | |
4642 | ||
c62446b1 PA |
4643 | }} // namespace selftests::dw2_expand_symtabs_matching |
4644 | ||
4645 | #endif /* GDB_SELF_TEST */ | |
4646 | ||
4b514bc8 JK |
4647 | /* If FILE_MATCHER is NULL or if PER_CU has |
4648 | dwarf2_per_cu_quick_data::MARK set (see | |
4649 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4650 | EXPANSION_NOTIFY on it. */ | |
4651 | ||
4652 | static void | |
4653 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4654 | (dwarf2_per_cu_data *per_cu, |
4655 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4656 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4657 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4658 | { | |
4659 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4660 | { | |
af758d11 | 4661 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4662 | |
97a1449a SM |
4663 | compunit_symtab *symtab |
4664 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4665 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4666 | |
af758d11 SM |
4667 | if (expansion_notify != NULL && symtab_was_null) |
4668 | expansion_notify (symtab); | |
4b514bc8 JK |
4669 | } |
4670 | } | |
4671 | ||
3f563c84 PA |
4672 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4673 | matched, to expand corresponding CUs that were marked. IDX is the | |
4674 | index of the symbol name that matched. */ | |
4675 | ||
4676 | static void | |
4677 | dw2_expand_marked_cus | |
976ca316 | 4678 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4679 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4680 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4681 | search_domain kind) | |
4682 | { | |
3f563c84 PA |
4683 | offset_type *vec, vec_len, vec_idx; |
4684 | bool global_seen = false; | |
976ca316 | 4685 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4686 | |
61920122 | 4687 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4688 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4689 | vec_len = MAYBE_SWAP (vec[0]); |
4690 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4691 | { | |
61920122 PA |
4692 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4693 | /* This value is only valid for index versions >= 7. */ | |
4694 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4695 | gdb_index_symbol_kind symbol_kind = | |
4696 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4697 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4698 | /* Only check the symbol attributes if they're present. | |
4699 | Indices prior to version 7 don't record them, | |
4700 | and indices >= 7 may elide them for certain symbols | |
4701 | (gold does this). */ | |
4702 | int attrs_valid = | |
4703 | (index.version >= 7 | |
4704 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4705 | ||
4706 | /* Work around gold/15646. */ | |
f030440d TV |
4707 | if (attrs_valid |
4708 | && !is_static | |
4709 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4710 | { |
f030440d | 4711 | if (global_seen) |
61920122 | 4712 | continue; |
f030440d TV |
4713 | |
4714 | global_seen = true; | |
61920122 | 4715 | } |
3190f0c6 | 4716 | |
61920122 PA |
4717 | /* Only check the symbol's kind if it has one. */ |
4718 | if (attrs_valid) | |
4719 | { | |
4720 | switch (kind) | |
8943b874 | 4721 | { |
61920122 PA |
4722 | case VARIABLES_DOMAIN: |
4723 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4724 | continue; | |
4725 | break; | |
4726 | case FUNCTIONS_DOMAIN: | |
4727 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4728 | continue; |
61920122 PA |
4729 | break; |
4730 | case TYPES_DOMAIN: | |
4731 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4732 | continue; | |
4733 | break; | |
59c35742 AB |
4734 | case MODULES_DOMAIN: |
4735 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4736 | continue; | |
4737 | break; | |
61920122 PA |
4738 | default: |
4739 | break; | |
8943b874 | 4740 | } |
61920122 | 4741 | } |
8943b874 | 4742 | |
61920122 | 4743 | /* Don't crash on bad data. */ |
976ca316 SM |
4744 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
4745 | + per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4746 | { |
b98664d3 | 4747 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4748 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4749 | continue; |
4750 | } | |
4751 | ||
976ca316 SM |
4752 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
4753 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, | |
4b514bc8 | 4754 | expansion_notify); |
61920122 PA |
4755 | } |
4756 | } | |
4757 | ||
4b514bc8 JK |
4758 | /* If FILE_MATCHER is non-NULL, set all the |
4759 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4760 | that match FILE_MATCHER. */ | |
4761 | ||
61920122 | 4762 | static void |
4b514bc8 | 4763 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4764 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4765 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4766 | { |
4b514bc8 | 4767 | if (file_matcher == NULL) |
61920122 PA |
4768 | return; |
4769 | ||
4b514bc8 JK |
4770 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4771 | htab_eq_pointer, | |
4772 | NULL, xcalloc, xfree)); | |
4773 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4774 | htab_eq_pointer, |
4775 | NULL, xcalloc, xfree)); | |
61920122 | 4776 | |
4b514bc8 JK |
4777 | /* The rule is CUs specify all the files, including those used by |
4778 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4779 | |
976ca316 | 4780 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4781 | { |
927aa2e7 JK |
4782 | QUIT; |
4783 | ||
4784 | per_cu->v.quick->mark = 0; | |
4785 | ||
4786 | /* We only need to look at symtabs not already expanded. */ | |
976ca316 | 4787 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4788 | continue; |
4789 | ||
976ca316 | 4790 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4791 | if (file_data == NULL) |
4792 | continue; | |
4793 | ||
4794 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4795 | continue; | |
4796 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4797 | { | |
4798 | per_cu->v.quick->mark = 1; | |
4799 | continue; | |
4800 | } | |
4801 | ||
b76e467d | 4802 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4803 | { |
4804 | const char *this_real_name; | |
4805 | ||
4806 | if (file_matcher (file_data->file_names[j], false)) | |
4807 | { | |
4808 | per_cu->v.quick->mark = 1; | |
4809 | break; | |
4810 | } | |
4811 | ||
4812 | /* Before we invoke realpath, which can get expensive when many | |
4813 | files are involved, do a quick comparison of the basenames. */ | |
4814 | if (!basenames_may_differ | |
4815 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4816 | true)) | |
4817 | continue; | |
4818 | ||
976ca316 | 4819 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4820 | if (file_matcher (this_real_name, false)) |
4821 | { | |
4822 | per_cu->v.quick->mark = 1; | |
4823 | break; | |
4824 | } | |
4825 | } | |
4826 | ||
b76e467d SM |
4827 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4828 | ? visited_found.get () | |
4829 | : visited_not_found.get (), | |
4830 | file_data, INSERT); | |
927aa2e7 JK |
4831 | *slot = file_data; |
4832 | } | |
4833 | } | |
4834 | ||
4835 | static void | |
4836 | dw2_expand_symtabs_matching | |
4837 | (struct objfile *objfile, | |
4838 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4839 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4840 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4841 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4842 | enum search_domain kind) | |
4843 | { | |
976ca316 | 4844 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4845 | |
4846 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4847 | if (!per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4848 | return; |
4849 | ||
976ca316 | 4850 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4851 | |
c1a66c06 TV |
4852 | if (symbol_matcher == NULL && lookup_name == NULL) |
4853 | { | |
976ca316 | 4854 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4855 | { |
4856 | QUIT; | |
4857 | ||
976ca316 | 4858 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
97a1449a | 4859 | file_matcher, expansion_notify); |
c1a66c06 TV |
4860 | } |
4861 | return; | |
4862 | } | |
4863 | ||
976ca316 | 4864 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4865 | |
c1a66c06 | 4866 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4867 | symbol_matcher, |
4868 | kind, [&] (offset_type idx) | |
4869 | { | |
976ca316 SM |
4870 | dw2_expand_marked_cus (per_objfile, idx, file_matcher, expansion_notify, |
4871 | kind); | |
3b00ef10 | 4872 | return true; |
976ca316 | 4873 | }, per_objfile); |
927aa2e7 JK |
4874 | } |
4875 | ||
39298a5d TT |
4876 | void |
4877 | dwarf2_gdb_index::expand_symtabs_matching | |
4878 | (struct objfile *objfile, | |
4879 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4880 | const lookup_name_info *lookup_name, | |
4881 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4882 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4883 | enum search_domain kind) | |
4884 | { | |
4885 | dw2_expand_symtabs_matching (objfile, file_matcher, lookup_name, | |
4886 | symbol_matcher, expansion_notify, kind); | |
4887 | } | |
4888 | ||
927aa2e7 JK |
4889 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific |
4890 | symtab. */ | |
4891 | ||
4892 | static struct compunit_symtab * | |
4893 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4894 | CORE_ADDR pc) | |
4895 | { | |
4896 | int i; | |
4897 | ||
4898 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4899 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4900 | return cust; | |
4901 | ||
4902 | if (cust->includes == NULL) | |
4903 | return NULL; | |
4904 | ||
4905 | for (i = 0; cust->includes[i]; ++i) | |
4906 | { | |
4907 | struct compunit_symtab *s = cust->includes[i]; | |
4908 | ||
4909 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4910 | if (s != NULL) | |
4911 | return s; | |
4912 | } | |
4913 | ||
4914 | return NULL; | |
4915 | } | |
4916 | ||
39298a5d TT |
4917 | struct compunit_symtab * |
4918 | dwarf2_base_index_functions::find_pc_sect_compunit_symtab | |
4919 | (struct objfile *objfile, | |
4920 | struct bound_minimal_symbol msymbol, | |
4921 | CORE_ADDR pc, | |
4922 | struct obj_section *section, | |
4923 | int warn_if_readin) | |
927aa2e7 JK |
4924 | { |
4925 | struct dwarf2_per_cu_data *data; | |
4926 | struct compunit_symtab *result; | |
4927 | ||
d320c2b5 | 4928 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4929 | return NULL; |
4930 | ||
b3b3bada | 4931 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4932 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4933 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4934 | if (!data) |
4935 | return NULL; | |
4936 | ||
af758d11 SM |
4937 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4938 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 4939 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4940 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4941 | |
97a1449a SM |
4942 | result = recursively_find_pc_sect_compunit_symtab |
4943 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4944 | ||
927aa2e7 JK |
4945 | gdb_assert (result != NULL); |
4946 | return result; | |
4947 | } | |
4948 | ||
39298a5d TT |
4949 | void |
4950 | dwarf2_base_index_functions::map_symbol_filenames (struct objfile *objfile, | |
4951 | symbol_filename_ftype *fun, | |
4952 | void *data, | |
4953 | int need_fullname) | |
927aa2e7 | 4954 | { |
976ca316 | 4955 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 4956 | |
976ca316 | 4957 | if (!per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4958 | { |
976ca316 | 4959 | per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4960 | |
4961 | htab_up visited (htab_create_alloc (10, | |
4962 | htab_hash_pointer, htab_eq_pointer, | |
4963 | NULL, xcalloc, xfree)); | |
4964 | ||
4965 | /* The rule is CUs specify all the files, including those used | |
4966 | by any TU, so there's no need to scan TUs here. We can | |
4967 | ignore file names coming from already-expanded CUs. */ | |
4968 | ||
976ca316 | 4969 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4970 | { |
976ca316 | 4971 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4972 | { |
4973 | void **slot = htab_find_slot (visited.get (), | |
4974 | per_cu->v.quick->file_names, | |
4975 | INSERT); | |
4976 | ||
4977 | *slot = per_cu->v.quick->file_names; | |
4978 | } | |
4979 | } | |
4980 | ||
976ca316 | 4981 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4982 | { |
927aa2e7 | 4983 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 4984 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4985 | continue; |
4986 | ||
ab432490 | 4987 | quick_file_names *file_data |
976ca316 | 4988 | = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4989 | if (file_data == NULL) |
4990 | continue; | |
4991 | ||
b76e467d | 4992 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4993 | if (*slot) |
4994 | { | |
4995 | /* Already visited. */ | |
4996 | continue; | |
4997 | } | |
4998 | *slot = file_data; | |
4999 | ||
5000 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5001 | { | |
5002 | const char *filename = file_data->file_names[j]; | |
976ca316 | 5003 | per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
5004 | } |
5005 | } | |
5006 | } | |
5007 | ||
976ca316 | 5008 | per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
5009 | { |
5010 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5011 | ||
5012 | if (need_fullname) | |
5013 | this_real_name = gdb_realpath (filename); | |
5014 | (*fun) (filename, this_real_name.get (), data); | |
5015 | }); | |
5016 | } | |
5017 | ||
39298a5d TT |
5018 | bool |
5019 | dwarf2_base_index_functions::has_symbols (struct objfile *objfile) | |
927aa2e7 | 5020 | { |
fae2120b | 5021 | return true; |
927aa2e7 JK |
5022 | } |
5023 | ||
927aa2e7 JK |
5024 | /* DWARF-5 debug_names reader. */ |
5025 | ||
5026 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5027 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5028 | ||
5029 | /* A helper function that reads the .debug_names section in SECTION | |
5030 | and fills in MAP. FILENAME is the name of the file containing the | |
5031 | section; it is used for error reporting. | |
5032 | ||
5033 | Returns true if all went well, false otherwise. */ | |
5034 | ||
5035 | static bool | |
5036 | read_debug_names_from_section (struct objfile *objfile, | |
5037 | const char *filename, | |
5038 | struct dwarf2_section_info *section, | |
5039 | mapped_debug_names &map) | |
5040 | { | |
96b79293 | 5041 | if (section->empty ()) |
927aa2e7 JK |
5042 | return false; |
5043 | ||
5044 | /* Older elfutils strip versions could keep the section in the main | |
5045 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5046 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
5047 | return false; |
5048 | ||
96b79293 | 5049 | section->read (objfile); |
927aa2e7 | 5050 | |
08feed99 | 5051 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
5052 | |
5053 | const gdb_byte *addr = section->buffer; | |
5054 | ||
96b79293 | 5055 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
5056 | |
5057 | unsigned int bytes_read; | |
5058 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5059 | addr += bytes_read; | |
5060 | ||
5061 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5062 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5063 | if (bytes_read + length != section->size) | |
5064 | { | |
5065 | /* There may be multiple per-CU indices. */ | |
5066 | warning (_("Section .debug_names in %s length %s does not match " | |
5067 | "section length %s, ignoring .debug_names."), | |
5068 | filename, plongest (bytes_read + length), | |
5069 | pulongest (section->size)); | |
5070 | return false; | |
5071 | } | |
5072 | ||
5073 | /* The version number. */ | |
5074 | uint16_t version = read_2_bytes (abfd, addr); | |
5075 | addr += 2; | |
5076 | if (version != 5) | |
5077 | { | |
5078 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5079 | "ignoring .debug_names."), | |
5080 | filename, version); | |
5081 | return false; | |
5082 | } | |
5083 | ||
5084 | /* Padding. */ | |
5085 | uint16_t padding = read_2_bytes (abfd, addr); | |
5086 | addr += 2; | |
5087 | if (padding != 0) | |
5088 | { | |
5089 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5090 | "ignoring .debug_names."), | |
5091 | filename, padding); | |
5092 | return false; | |
5093 | } | |
5094 | ||
5095 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5096 | map.cu_count = read_4_bytes (abfd, addr); | |
5097 | addr += 4; | |
5098 | ||
5099 | /* local_type_unit_count - The number of TUs in the local TU | |
5100 | list. */ | |
5101 | map.tu_count = read_4_bytes (abfd, addr); | |
5102 | addr += 4; | |
5103 | ||
5104 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5105 | list. */ | |
5106 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5107 | addr += 4; | |
5108 | if (foreign_tu_count != 0) | |
5109 | { | |
5110 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5111 | "ignoring .debug_names."), | |
5112 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5113 | return false; | |
5114 | } | |
5115 | ||
5116 | /* bucket_count - The number of hash buckets in the hash lookup | |
5117 | table. */ | |
5118 | map.bucket_count = read_4_bytes (abfd, addr); | |
5119 | addr += 4; | |
5120 | ||
5121 | /* name_count - The number of unique names in the index. */ | |
5122 | map.name_count = read_4_bytes (abfd, addr); | |
5123 | addr += 4; | |
5124 | ||
5125 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5126 | table. */ | |
5127 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5128 | addr += 4; | |
5129 | ||
5130 | /* augmentation_string_size - The size in bytes of the augmentation | |
5131 | string. This value is rounded up to a multiple of 4. */ | |
5132 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5133 | addr += 4; | |
5134 | map.augmentation_is_gdb = ((augmentation_string_size | |
5135 | == sizeof (dwarf5_augmentation)) | |
5136 | && memcmp (addr, dwarf5_augmentation, | |
5137 | sizeof (dwarf5_augmentation)) == 0); | |
5138 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5139 | addr += augmentation_string_size; | |
5140 | ||
5141 | /* List of CUs */ | |
5142 | map.cu_table_reordered = addr; | |
5143 | addr += map.cu_count * map.offset_size; | |
5144 | ||
5145 | /* List of Local TUs */ | |
5146 | map.tu_table_reordered = addr; | |
5147 | addr += map.tu_count * map.offset_size; | |
5148 | ||
5149 | /* Hash Lookup Table */ | |
5150 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5151 | addr += map.bucket_count * 4; | |
5152 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5153 | addr += map.name_count * 4; | |
5154 | ||
5155 | /* Name Table */ | |
5156 | map.name_table_string_offs_reordered = addr; | |
5157 | addr += map.name_count * map.offset_size; | |
5158 | map.name_table_entry_offs_reordered = addr; | |
5159 | addr += map.name_count * map.offset_size; | |
5160 | ||
5161 | const gdb_byte *abbrev_table_start = addr; | |
5162 | for (;;) | |
5163 | { | |
927aa2e7 JK |
5164 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5165 | addr += bytes_read; | |
5166 | if (index_num == 0) | |
5167 | break; | |
5168 | ||
5169 | const auto insertpair | |
5170 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5171 | if (!insertpair.second) | |
5172 | { | |
5173 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5174 | "ignoring .debug_names."), | |
5175 | filename, pulongest (index_num)); | |
5176 | return false; | |
5177 | } | |
5178 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5179 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5180 | addr += bytes_read; | |
5181 | ||
5182 | for (;;) | |
5183 | { | |
5184 | mapped_debug_names::index_val::attr attr; | |
5185 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5186 | addr += bytes_read; | |
5187 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5188 | addr += bytes_read; | |
5189 | if (attr.form == DW_FORM_implicit_const) | |
5190 | { | |
5191 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5192 | &bytes_read); | |
5193 | addr += bytes_read; | |
5194 | } | |
5195 | if (attr.dw_idx == 0 && attr.form == 0) | |
5196 | break; | |
5197 | indexval.attr_vec.push_back (std::move (attr)); | |
5198 | } | |
5199 | } | |
5200 | if (addr != abbrev_table_start + abbrev_table_size) | |
5201 | { | |
5202 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5203 | "of size %s vs. written as %u, ignoring .debug_names."), |
5204 | filename, plongest (addr - abbrev_table_start), | |
5205 | abbrev_table_size); | |
927aa2e7 JK |
5206 | return false; |
5207 | } | |
5208 | map.entry_pool = addr; | |
5209 | ||
5210 | return true; | |
5211 | } | |
5212 | ||
5213 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5214 | list. */ | |
5215 | ||
5216 | static void | |
168c9250 | 5217 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5218 | const mapped_debug_names &map, |
5219 | dwarf2_section_info §ion, | |
b76e467d | 5220 | bool is_dwz) |
927aa2e7 | 5221 | { |
3ee6bb11 TV |
5222 | if (!map.augmentation_is_gdb) |
5223 | { | |
fc9a13fb TV |
5224 | for (uint32_t i = 0; i < map.cu_count; ++i) |
5225 | { | |
5226 | sect_offset sect_off | |
5227 | = (sect_offset) (extract_unsigned_integer | |
5228 | (map.cu_table_reordered + i * map.offset_size, | |
5229 | map.offset_size, | |
5230 | map.dwarf5_byte_order)); | |
5231 | /* We don't know the length of the CU, because the CU list in a | |
5232 | .debug_names index can be incomplete, so we can't use the start | |
5233 | of the next CU as end of this CU. We create the CUs here with | |
5234 | length 0, and in cutu_reader::cutu_reader we'll fill in the | |
5235 | actual length. */ | |
5236 | dwarf2_per_cu_data *per_cu | |
5237 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, | |
5238 | sect_off, 0); | |
5239 | per_bfd->all_comp_units.push_back (per_cu); | |
5240 | } | |
d3b54e63 | 5241 | return; |
3ee6bb11 TV |
5242 | } |
5243 | ||
927aa2e7 JK |
5244 | sect_offset sect_off_prev; |
5245 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5246 | { | |
5247 | sect_offset sect_off_next; | |
5248 | if (i < map.cu_count) | |
5249 | { | |
5250 | sect_off_next | |
5251 | = (sect_offset) (extract_unsigned_integer | |
5252 | (map.cu_table_reordered + i * map.offset_size, | |
5253 | map.offset_size, | |
5254 | map.dwarf5_byte_order)); | |
5255 | } | |
5256 | else | |
5257 | sect_off_next = (sect_offset) section.size; | |
5258 | if (i >= 1) | |
5259 | { | |
5260 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5261 | dwarf2_per_cu_data *per_cu |
168c9250 | 5262 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5263 | sect_off_prev, length); |
168c9250 | 5264 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5265 | } |
5266 | sect_off_prev = sect_off_next; | |
5267 | } | |
5268 | } | |
5269 | ||
5270 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5271 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5272 | |
5273 | static void | |
168c9250 | 5274 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5275 | const mapped_debug_names &map, |
5276 | const mapped_debug_names &dwz_map) | |
5277 | { | |
168c9250 SM |
5278 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5279 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5280 | |
168c9250 | 5281 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5282 | false /* is_dwz */); |
927aa2e7 JK |
5283 | |
5284 | if (dwz_map.cu_count == 0) | |
5285 | return; | |
5286 | ||
168c9250 SM |
5287 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5288 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5289 | true /* is_dwz */); |
927aa2e7 JK |
5290 | } |
5291 | ||
5292 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5293 | elements of all the CUs and return true. Otherwise, return false. */ | |
5294 | ||
5295 | static bool | |
976ca316 | 5296 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 5297 | { |
fcf23d5b SM |
5298 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5299 | mapped_debug_names dwz_map; | |
976ca316 | 5300 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 5301 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
5302 | |
5303 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
976ca316 | 5304 | &per_objfile->per_bfd->debug_names, *map)) |
927aa2e7 JK |
5305 | return false; |
5306 | ||
5307 | /* Don't use the index if it's empty. */ | |
22ca247e | 5308 | if (map->name_count == 0) |
927aa2e7 JK |
5309 | return false; |
5310 | ||
5311 | /* If there is a .dwz file, read it so we can get its CU list as | |
5312 | well. */ | |
f8c41851 | 5313 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5314 | if (dwz != NULL) |
5315 | { | |
5316 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5317 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5318 | &dwz->debug_names, dwz_map)) |
5319 | { | |
5320 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5321 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5322 | return false; |
5323 | } | |
5324 | } | |
5325 | ||
f8c41851 | 5326 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5327 | |
22ca247e | 5328 | if (map->tu_count != 0) |
927aa2e7 JK |
5329 | { |
5330 | /* We can only handle a single .debug_types when we have an | |
5331 | index. */ | |
f8c41851 | 5332 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5333 | return false; |
5334 | ||
f8c41851 | 5335 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5336 | |
5337 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5338 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5339 | } |
5340 | ||
f8c41851 | 5341 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5342 | |
f8c41851 SM |
5343 | per_bfd->debug_names_table = std::move (map); |
5344 | per_bfd->using_index = 1; | |
5345 | per_bfd->quick_file_names_table = | |
976ca316 | 5346 | create_quick_file_names_table (per_objfile->per_bfd->all_comp_units.size ()); |
927aa2e7 | 5347 | |
f8c41851 SM |
5348 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent |
5349 | objfiles using the same BFD. */ | |
5350 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
5351 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
5352 | ||
927aa2e7 JK |
5353 | return true; |
5354 | } | |
5355 | ||
927aa2e7 JK |
5356 | /* Type used to manage iterating over all CUs looking for a symbol for |
5357 | .debug_names. */ | |
5358 | ||
5359 | class dw2_debug_names_iterator | |
5360 | { | |
5361 | public: | |
927aa2e7 | 5362 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5363 | gdb::optional<block_enum> block_index, |
5364 | domain_enum domain, | |
fcf23d5b | 5365 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5366 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5367 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5368 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5369 | {} |
5370 | ||
5371 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
fcf23d5b | 5372 | search_domain search, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5373 | : m_map (map), |
5374 | m_search (search), | |
fcf23d5b SM |
5375 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5376 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5377 | {} |
5378 | ||
3b00ef10 TT |
5379 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5380 | block_enum block_index, domain_enum domain, | |
fcf23d5b | 5381 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5382 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5383 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5384 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5385 | {} |
5386 | ||
927aa2e7 JK |
5387 | /* Return the next matching CU or NULL if there are no more. */ |
5388 | dwarf2_per_cu_data *next (); | |
5389 | ||
5390 | private: | |
5391 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5392 | const char *name, |
5393 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5394 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5395 | uint32_t namei, |
5396 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5397 | |
5398 | /* The internalized form of .debug_names. */ | |
5399 | const mapped_debug_names &m_map; | |
5400 | ||
2b79f376 SM |
5401 | /* If set, only look for symbols that match that block. Valid values are |
5402 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5403 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5404 | |
5405 | /* The kind of symbol we're looking for. */ | |
5406 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5407 | const search_domain m_search = ALL_DOMAIN; | |
5408 | ||
5409 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5410 | not found. */ | |
5411 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5412 | |
5413 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5414 | }; |
5415 | ||
5416 | const char * | |
fcf23d5b | 5417 | mapped_debug_names::namei_to_name |
976ca316 | 5418 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5419 | { |
5420 | const ULONGEST namei_string_offs | |
5421 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5422 | + namei * offset_size), | |
5423 | offset_size, | |
5424 | dwarf5_byte_order); | |
976ca316 | 5425 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5426 | } |
5427 | ||
5428 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5429 | found, return pointer to its pool data. If NAME cannot be found, | |
5430 | return NULL. */ | |
5431 | ||
5432 | const gdb_byte * | |
5433 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5434 | (const mapped_debug_names &map, const char *name, |
5435 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5436 | { |
5437 | int (*cmp) (const char *, const char *); | |
5438 | ||
54ee4252 | 5439 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5440 | if (current_language->la_language == language_cplus |
5441 | || current_language->la_language == language_fortran | |
5442 | || current_language->la_language == language_d) | |
5443 | { | |
5444 | /* NAME is already canonical. Drop any qualifiers as | |
5445 | .debug_names does not contain any. */ | |
5446 | ||
5447 | if (strchr (name, '(') != NULL) | |
5448 | { | |
54ee4252 | 5449 | without_params = cp_remove_params (name); |
927aa2e7 | 5450 | if (without_params != NULL) |
54ee4252 | 5451 | name = without_params.get (); |
927aa2e7 JK |
5452 | } |
5453 | } | |
5454 | ||
5455 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5456 | ||
5457 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5458 | uint32_t namei | |
5459 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5460 | (map.bucket_table_reordered | |
5461 | + (full_hash % map.bucket_count)), 4, | |
5462 | map.dwarf5_byte_order); | |
5463 | if (namei == 0) | |
5464 | return NULL; | |
5465 | --namei; | |
5466 | if (namei >= map.name_count) | |
5467 | { | |
b98664d3 | 5468 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5469 | "[in module %s]"), |
5470 | namei, map.name_count, | |
fcf23d5b | 5471 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5472 | return NULL; |
5473 | } | |
5474 | ||
5475 | for (;;) | |
5476 | { | |
5477 | const uint32_t namei_full_hash | |
5478 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5479 | (map.hash_table_reordered + namei), 4, | |
5480 | map.dwarf5_byte_order); | |
5481 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5482 | return NULL; | |
5483 | ||
5484 | if (full_hash == namei_full_hash) | |
5485 | { | |
fcf23d5b | 5486 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5487 | |
5488 | #if 0 /* An expensive sanity check. */ | |
5489 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5490 | { | |
b98664d3 | 5491 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5492 | "[in module %s]"), |
5493 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5494 | return NULL; | |
5495 | } | |
5496 | #endif | |
5497 | ||
5498 | if (cmp (namei_string, name) == 0) | |
5499 | { | |
5500 | const ULONGEST namei_entry_offs | |
5501 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5502 | + namei * map.offset_size), | |
5503 | map.offset_size, map.dwarf5_byte_order); | |
5504 | return map.entry_pool + namei_entry_offs; | |
5505 | } | |
5506 | } | |
5507 | ||
5508 | ++namei; | |
5509 | if (namei >= map.name_count) | |
5510 | return NULL; | |
5511 | } | |
5512 | } | |
5513 | ||
5514 | const gdb_byte * | |
5515 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5516 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5517 | { |
5518 | if (namei >= map.name_count) | |
5519 | { | |
b98664d3 | 5520 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5521 | "[in module %s]"), |
5522 | namei, map.name_count, | |
fcf23d5b | 5523 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5524 | return NULL; |
5525 | } | |
5526 | ||
5527 | const ULONGEST namei_entry_offs | |
5528 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5529 | + namei * map.offset_size), | |
5530 | map.offset_size, map.dwarf5_byte_order); | |
5531 | return map.entry_pool + namei_entry_offs; | |
5532 | } | |
5533 | ||
5534 | /* See dw2_debug_names_iterator. */ | |
5535 | ||
5536 | dwarf2_per_cu_data * | |
5537 | dw2_debug_names_iterator::next () | |
5538 | { | |
5539 | if (m_addr == NULL) | |
5540 | return NULL; | |
5541 | ||
fcf23d5b SM |
5542 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5543 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5544 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5545 | |
5546 | again: | |
5547 | ||
5548 | unsigned int bytes_read; | |
5549 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5550 | m_addr += bytes_read; | |
5551 | if (abbrev == 0) | |
5552 | return NULL; | |
5553 | ||
5554 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5555 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5556 | { | |
b98664d3 | 5557 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5558 | "[in module %s]"), |
ed2dc618 | 5559 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5560 | return NULL; |
5561 | } | |
5562 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5563 | enum class symbol_linkage { |
5564 | unknown, | |
5565 | static_, | |
5566 | extern_, | |
23c13d42 | 5567 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5568 | dwarf2_per_cu_data *per_cu = NULL; |
5569 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5570 | { | |
5571 | ULONGEST ull; | |
5572 | switch (attr.form) | |
5573 | { | |
5574 | case DW_FORM_implicit_const: | |
5575 | ull = attr.implicit_const; | |
5576 | break; | |
5577 | case DW_FORM_flag_present: | |
5578 | ull = 1; | |
5579 | break; | |
5580 | case DW_FORM_udata: | |
5581 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5582 | m_addr += bytes_read; | |
5583 | break; | |
6dc55ce9 | 5584 | case DW_FORM_ref4: |
5585 | ull = read_4_bytes (abfd, m_addr); | |
5586 | m_addr += 4; | |
5587 | break; | |
5588 | case DW_FORM_ref8: | |
5589 | ull = read_8_bytes (abfd, m_addr); | |
5590 | m_addr += 8; | |
5591 | break; | |
5592 | case DW_FORM_ref_sig8: | |
5593 | ull = read_8_bytes (abfd, m_addr); | |
5594 | m_addr += 8; | |
5595 | break; | |
927aa2e7 | 5596 | default: |
b98664d3 | 5597 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5598 | dwarf_form_name (attr.form), |
ed2dc618 | 5599 | objfile_name (objfile)); |
927aa2e7 JK |
5600 | return NULL; |
5601 | } | |
5602 | switch (attr.dw_idx) | |
5603 | { | |
5604 | case DW_IDX_compile_unit: | |
5605 | /* Don't crash on bad data. */ | |
fcf23d5b | 5606 | if (ull >= m_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5607 | { |
b98664d3 | 5608 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5609 | " [in module %s]"), |
5610 | pulongest (ull), | |
fcf23d5b | 5611 | objfile_name (objfile)); |
927aa2e7 JK |
5612 | continue; |
5613 | } | |
fcf23d5b | 5614 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5615 | break; |
8af5c486 JK |
5616 | case DW_IDX_type_unit: |
5617 | /* Don't crash on bad data. */ | |
fcf23d5b | 5618 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5619 | { |
b98664d3 | 5620 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5621 | " [in module %s]"), |
5622 | pulongest (ull), | |
fcf23d5b | 5623 | objfile_name (objfile)); |
8af5c486 JK |
5624 | continue; |
5625 | } | |
fcf23d5b | 5626 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5627 | break; |
6dc55ce9 | 5628 | case DW_IDX_die_offset: |
5629 | /* In a per-CU index (as opposed to a per-module index), index | |
5630 | entries without CU attribute implicitly refer to the single CU. */ | |
5631 | if (per_cu == NULL) | |
fcf23d5b | 5632 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5633 | break; |
927aa2e7 JK |
5634 | case DW_IDX_GNU_internal: |
5635 | if (!m_map.augmentation_is_gdb) | |
5636 | break; | |
23c13d42 | 5637 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5638 | break; |
5639 | case DW_IDX_GNU_external: | |
5640 | if (!m_map.augmentation_is_gdb) | |
5641 | break; | |
23c13d42 | 5642 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5643 | break; |
5644 | } | |
5645 | } | |
5646 | ||
5647 | /* Skip if already read in. */ | |
fcf23d5b | 5648 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5649 | goto again; |
5650 | ||
5651 | /* Check static vs global. */ | |
23c13d42 | 5652 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5653 | { |
2b79f376 | 5654 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5655 | const bool symbol_is_static = |
5656 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5657 | if (want_static != symbol_is_static) |
2b79f376 | 5658 | goto again; |
927aa2e7 JK |
5659 | } |
5660 | ||
5661 | /* Match dw2_symtab_iter_next, symbol_kind | |
5662 | and debug_names::psymbol_tag. */ | |
5663 | switch (m_domain) | |
5664 | { | |
5665 | case VAR_DOMAIN: | |
5666 | switch (indexval.dwarf_tag) | |
5667 | { | |
5668 | case DW_TAG_variable: | |
5669 | case DW_TAG_subprogram: | |
5670 | /* Some types are also in VAR_DOMAIN. */ | |
5671 | case DW_TAG_typedef: | |
5672 | case DW_TAG_structure_type: | |
5673 | break; | |
5674 | default: | |
5675 | goto again; | |
5676 | } | |
5677 | break; | |
5678 | case STRUCT_DOMAIN: | |
5679 | switch (indexval.dwarf_tag) | |
5680 | { | |
5681 | case DW_TAG_typedef: | |
5682 | case DW_TAG_structure_type: | |
5683 | break; | |
5684 | default: | |
5685 | goto again; | |
5686 | } | |
5687 | break; | |
5688 | case LABEL_DOMAIN: | |
5689 | switch (indexval.dwarf_tag) | |
5690 | { | |
5691 | case 0: | |
5692 | case DW_TAG_variable: | |
5693 | break; | |
5694 | default: | |
5695 | goto again; | |
5696 | } | |
5697 | break; | |
59c35742 AB |
5698 | case MODULE_DOMAIN: |
5699 | switch (indexval.dwarf_tag) | |
5700 | { | |
5701 | case DW_TAG_module: | |
5702 | break; | |
5703 | default: | |
5704 | goto again; | |
5705 | } | |
5706 | break; | |
927aa2e7 JK |
5707 | default: |
5708 | break; | |
5709 | } | |
5710 | ||
5711 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5712 | debug_names::psymbol_tag. */ | |
5713 | switch (m_search) | |
4b514bc8 | 5714 | { |
927aa2e7 JK |
5715 | case VARIABLES_DOMAIN: |
5716 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5717 | { |
927aa2e7 JK |
5718 | case DW_TAG_variable: |
5719 | break; | |
5720 | default: | |
5721 | goto again; | |
4b514bc8 | 5722 | } |
927aa2e7 JK |
5723 | break; |
5724 | case FUNCTIONS_DOMAIN: | |
5725 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5726 | { |
927aa2e7 JK |
5727 | case DW_TAG_subprogram: |
5728 | break; | |
5729 | default: | |
5730 | goto again; | |
4b514bc8 | 5731 | } |
927aa2e7 JK |
5732 | break; |
5733 | case TYPES_DOMAIN: | |
5734 | switch (indexval.dwarf_tag) | |
5735 | { | |
5736 | case DW_TAG_typedef: | |
5737 | case DW_TAG_structure_type: | |
5738 | break; | |
5739 | default: | |
5740 | goto again; | |
5741 | } | |
5742 | break; | |
59c35742 AB |
5743 | case MODULES_DOMAIN: |
5744 | switch (indexval.dwarf_tag) | |
5745 | { | |
5746 | case DW_TAG_module: | |
5747 | break; | |
5748 | default: | |
5749 | goto again; | |
5750 | } | |
927aa2e7 JK |
5751 | default: |
5752 | break; | |
4b514bc8 | 5753 | } |
927aa2e7 JK |
5754 | |
5755 | return per_cu; | |
4b514bc8 | 5756 | } |
61920122 | 5757 | |
39298a5d TT |
5758 | struct compunit_symtab * |
5759 | dwarf2_debug_names_index::lookup_symbol | |
5760 | (struct objfile *objfile, block_enum block_index, | |
5761 | const char *name, domain_enum domain) | |
4b514bc8 | 5762 | { |
976ca316 | 5763 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
61920122 | 5764 | |
976ca316 | 5765 | const auto &mapp = per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5766 | if (!mapp) |
61920122 | 5767 | { |
927aa2e7 JK |
5768 | /* index is NULL if OBJF_READNOW. */ |
5769 | return NULL; | |
5770 | } | |
5771 | const auto &map = *mapp; | |
9291a0cd | 5772 | |
976ca316 | 5773 | dw2_debug_names_iterator iter (map, block_index, domain, name, per_objfile); |
9703b513 | 5774 | |
927aa2e7 JK |
5775 | struct compunit_symtab *stab_best = NULL; |
5776 | struct dwarf2_per_cu_data *per_cu; | |
5777 | while ((per_cu = iter.next ()) != NULL) | |
5778 | { | |
5779 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 5780 | compunit_symtab *stab |
976ca316 | 5781 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 | 5782 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5783 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5784 | |
927aa2e7 JK |
5785 | sym = block_find_symbol (block, name, domain, |
5786 | block_find_non_opaque_type_preferred, | |
5787 | &with_opaque); | |
9703b513 | 5788 | |
927aa2e7 JK |
5789 | /* Some caution must be observed with overloaded functions and |
5790 | methods, since the index will not contain any overload | |
5791 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5792 | |
927aa2e7 | 5793 | if (sym != NULL |
987012b8 | 5794 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5795 | return stab; |
5796 | if (with_opaque != NULL | |
987012b8 | 5797 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5798 | stab_best = stab; |
9703b513 | 5799 | |
927aa2e7 | 5800 | /* Keep looking through other CUs. */ |
9703b513 TT |
5801 | } |
5802 | ||
927aa2e7 | 5803 | return stab_best; |
9703b513 TT |
5804 | } |
5805 | ||
927aa2e7 JK |
5806 | /* This dumps minimal information about .debug_names. It is called |
5807 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5808 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5809 | |
39298a5d TT |
5810 | void |
5811 | dwarf2_debug_names_index::dump (struct objfile *objfile) | |
927aa2e7 | 5812 | { |
976ca316 | 5813 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5814 | |
976ca316 | 5815 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5816 | printf_filtered (".debug_names:"); |
976ca316 | 5817 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5818 | printf_filtered (" exists\n"); |
5819 | else | |
5820 | printf_filtered (" faked for \"readnow\"\n"); | |
5821 | printf_filtered ("\n"); | |
9291a0cd TT |
5822 | } |
5823 | ||
39298a5d TT |
5824 | void |
5825 | dwarf2_debug_names_index::expand_symtabs_for_function | |
5826 | (struct objfile *objfile, const char *func_name) | |
9291a0cd | 5827 | { |
976ca316 | 5828 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 5829 | |
976ca316 SM |
5830 | /* per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5831 | if (per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5832 | { |
976ca316 | 5833 | const mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
24c79950 | 5834 | |
fcf23d5b | 5835 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name, |
976ca316 | 5836 | per_objfile); |
24c79950 | 5837 | |
927aa2e7 JK |
5838 | struct dwarf2_per_cu_data *per_cu; |
5839 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5840 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 JK |
5841 | } |
5842 | } | |
24c79950 | 5843 | |
39298a5d TT |
5844 | void |
5845 | dwarf2_debug_names_index::map_matching_symbols | |
3b00ef10 TT |
5846 | (struct objfile *objfile, |
5847 | const lookup_name_info &name, domain_enum domain, | |
5848 | int global, | |
5849 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5850 | symbol_compare_ftype *ordered_compare) | |
5851 | { | |
976ca316 | 5852 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5853 | |
5854 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5855 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5856 | return; |
5857 | ||
976ca316 | 5858 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5859 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5860 | ||
5861 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5862 | auto matcher = [&] (const char *symname) | |
5863 | { | |
5864 | if (ordered_compare == nullptr) | |
5865 | return true; | |
5866 | return ordered_compare (symname, match_name) == 0; | |
5867 | }; | |
5868 | ||
5869 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5870 | [&] (offset_type namei) | |
5871 | { | |
5872 | /* The name was matched, now expand corresponding CUs that were | |
5873 | marked. */ | |
fcf23d5b | 5874 | dw2_debug_names_iterator iter (map, block_kind, domain, namei, |
976ca316 | 5875 | per_objfile); |
3b00ef10 TT |
5876 | |
5877 | struct dwarf2_per_cu_data *per_cu; | |
5878 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5879 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5880 | nullptr); |
3b00ef10 | 5881 | return true; |
976ca316 | 5882 | }, per_objfile); |
3b00ef10 TT |
5883 | |
5884 | /* It's a shame we couldn't do this inside the | |
5885 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5886 | that have already been expanded. Instead, this loop matches what | |
5887 | the psymtab code does. */ | |
976ca316 | 5888 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5889 | { |
976ca316 | 5890 | compunit_symtab *symtab = per_objfile->get_symtab (per_cu); |
af758d11 | 5891 | if (symtab != nullptr) |
3b00ef10 TT |
5892 | { |
5893 | const struct block *block | |
af758d11 | 5894 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5895 | if (!iterate_over_symbols_terminated (block, name, |
5896 | domain, callback)) | |
5897 | break; | |
5898 | } | |
5899 | } | |
5900 | } | |
5901 | ||
39298a5d TT |
5902 | void |
5903 | dwarf2_debug_names_index::expand_symtabs_matching | |
927aa2e7 JK |
5904 | (struct objfile *objfile, |
5905 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5906 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5907 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5908 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5909 | enum search_domain kind) | |
5910 | { | |
976ca316 | 5911 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 5912 | |
927aa2e7 | 5913 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 5914 | if (!per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5915 | return; |
9291a0cd | 5916 | |
976ca316 | 5917 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 5918 | |
c1a66c06 TV |
5919 | if (symbol_matcher == NULL && lookup_name == NULL) |
5920 | { | |
976ca316 | 5921 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5922 | { |
5923 | QUIT; | |
5924 | ||
976ca316 SM |
5925 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5926 | expansion_notify); | |
c1a66c06 TV |
5927 | } |
5928 | return; | |
5929 | } | |
5930 | ||
976ca316 | 5931 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5932 | |
c1a66c06 | 5933 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
5934 | symbol_matcher, |
5935 | kind, [&] (offset_type namei) | |
927aa2e7 | 5936 | { |
927aa2e7 JK |
5937 | /* The name was matched, now expand corresponding CUs that were |
5938 | marked. */ | |
976ca316 | 5939 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile); |
bbf2f4df | 5940 | |
927aa2e7 JK |
5941 | struct dwarf2_per_cu_data *per_cu; |
5942 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 SM |
5943 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5944 | expansion_notify); | |
3b00ef10 | 5945 | return true; |
976ca316 | 5946 | }, per_objfile); |
9291a0cd TT |
5947 | } |
5948 | ||
4485a1c1 | 5949 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5950 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5951 | |
5952 | template <typename T> | |
5953 | static gdb::array_view<const gdb_byte> | |
5954 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5955 | { | |
5956 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5957 | ||
96b79293 | 5958 | if (section->empty ()) |
4485a1c1 SM |
5959 | return {}; |
5960 | ||
5961 | /* Older elfutils strip versions could keep the section in the main | |
5962 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5963 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5964 | return {}; |
5965 | ||
96b79293 | 5966 | section->read (obj); |
4485a1c1 | 5967 | |
8bebfcda PA |
5968 | /* dwarf2_section_info::size is a bfd_size_type, while |
5969 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5970 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5971 | is 32-bit. So we need an explicit narrowing conversion here. | |
5972 | This is fine, because it's impossible to allocate or mmap an | |
5973 | array/buffer larger than what size_t can represent. */ | |
5974 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5975 | } |
5976 | ||
87d6a7aa SM |
5977 | /* Lookup the index cache for the contents of the index associated to |
5978 | DWARF2_OBJ. */ | |
5979 | ||
5980 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5981 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5982 | { |
5983 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5984 | if (build_id == nullptr) | |
5985 | return {}; | |
5986 | ||
5987 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5988 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5989 | } |
5990 | ||
5991 | /* Same as the above, but for DWZ. */ | |
5992 | ||
5993 | static gdb::array_view<const gdb_byte> | |
5994 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5995 | { | |
5996 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5997 | if (build_id == nullptr) | |
5998 | return {}; | |
5999 | ||
6000 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6001 | } | |
6002 | ||
3c0aa29a | 6003 | /* See symfile.h. */ |
9291a0cd | 6004 | |
3c0aa29a PA |
6005 | bool |
6006 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6007 | { |
976ca316 SM |
6008 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6009 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 6010 | |
850ed749 SM |
6011 | dwarf_read_debug_printf ("called"); |
6012 | ||
9291a0cd TT |
6013 | /* If we're about to read full symbols, don't bother with the |
6014 | indices. In this case we also don't care if some other debug | |
6015 | format is making psymtabs, because they are all about to be | |
6016 | expanded anyway. */ | |
6017 | if ((objfile->flags & OBJF_READNOW)) | |
6018 | { | |
850ed749 SM |
6019 | dwarf_read_debug_printf ("readnow requested"); |
6020 | ||
17ee85fc TT |
6021 | /* When using READNOW, the using_index flag (set below) indicates that |
6022 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
6023 | if (per_bfd->using_index) | |
6024 | { | |
850ed749 | 6025 | dwarf_read_debug_printf ("using_index already set"); |
17ee85fc | 6026 | *index_kind = dw_index_kind::GDB_INDEX; |
976ca316 | 6027 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6028 | return true; |
6029 | } | |
6030 | ||
6031 | per_bfd->using_index = 1; | |
976ca316 SM |
6032 | create_all_comp_units (per_objfile); |
6033 | create_all_type_units (per_objfile); | |
17ee85fc TT |
6034 | per_bfd->quick_file_names_table |
6035 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 6036 | per_objfile->resize_symtabs (); |
9291a0cd | 6037 | |
17ee85fc TT |
6038 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
6039 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 6040 | { |
17ee85fc | 6041 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 6042 | |
17ee85fc | 6043 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 6044 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
6045 | } |
6046 | ||
6047 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6048 | these functions will be no-ops because we will have expanded | |
6049 | all symtabs. */ | |
3c0aa29a PA |
6050 | *index_kind = dw_index_kind::GDB_INDEX; |
6051 | return true; | |
9291a0cd TT |
6052 | } |
6053 | ||
17ee85fc TT |
6054 | /* Was a debug names index already read when we processed an objfile sharing |
6055 | PER_BFD? */ | |
6056 | if (per_bfd->debug_names_table != nullptr) | |
6057 | { | |
850ed749 | 6058 | dwarf_read_debug_printf ("re-using shared debug names table"); |
17ee85fc | 6059 | *index_kind = dw_index_kind::DEBUG_NAMES; |
f8c41851 | 6060 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6061 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6062 | return true; |
6063 | } | |
6064 | ||
6065 | /* Was a GDB index already read when we processed an objfile sharing | |
6066 | PER_BFD? */ | |
6067 | if (per_bfd->index_table != nullptr) | |
6068 | { | |
850ed749 | 6069 | dwarf_read_debug_printf ("re-using shared index table"); |
17ee85fc | 6070 | *index_kind = dw_index_kind::GDB_INDEX; |
f8c41851 | 6071 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6072 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6073 | return true; |
6074 | } | |
6075 | ||
efb763a5 SM |
6076 | /* There might already be partial symtabs built for this BFD. This happens |
6077 | when loading the same binary twice with the index-cache enabled. If so, | |
6078 | don't try to read an index. The objfile / per_objfile initialization will | |
6079 | be completed in dwarf2_build_psymtabs, in the standard partial symtabs | |
6080 | code path. */ | |
6081 | if (per_bfd->partial_symtabs != nullptr) | |
850ed749 SM |
6082 | { |
6083 | dwarf_read_debug_printf ("re-using shared partial symtabs"); | |
6084 | return false; | |
6085 | } | |
efb763a5 | 6086 | |
976ca316 | 6087 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a | 6088 | { |
850ed749 | 6089 | dwarf_read_debug_printf ("found debug names"); |
3c0aa29a | 6090 | *index_kind = dw_index_kind::DEBUG_NAMES; |
976ca316 | 6091 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6092 | return true; |
6093 | } | |
927aa2e7 | 6094 | |
976ca316 | 6095 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 6096 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 6097 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a | 6098 | { |
850ed749 | 6099 | dwarf_read_debug_printf ("found gdb index from file"); |
3c0aa29a | 6100 | *index_kind = dw_index_kind::GDB_INDEX; |
976ca316 | 6101 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6102 | return true; |
6103 | } | |
9291a0cd | 6104 | |
87d6a7aa | 6105 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 6106 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
6107 | get_gdb_index_contents_from_cache, |
6108 | get_gdb_index_contents_from_cache_dwz)) | |
6109 | { | |
850ed749 | 6110 | dwarf_read_debug_printf ("found gdb index from cache"); |
87d6a7aa SM |
6111 | global_index_cache.hit (); |
6112 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6113 | per_objfile->resize_symtabs (); |
87d6a7aa SM |
6114 | return true; |
6115 | } | |
6116 | ||
6117 | global_index_cache.miss (); | |
3c0aa29a | 6118 | return false; |
9291a0cd TT |
6119 | } |
6120 | ||
6121 | \f | |
6122 | ||
dce234bc PP |
6123 | /* Build a partial symbol table. */ |
6124 | ||
6125 | void | |
f29dff0a | 6126 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6127 | { |
976ca316 SM |
6128 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6129 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
6130 | |
6131 | if (per_bfd->partial_symtabs != nullptr) | |
6132 | { | |
6133 | /* Partial symbols were already read, so now we can simply | |
6134 | attach them. */ | |
6135 | objfile->partial_symtabs = per_bfd->partial_symtabs; | |
976ca316 | 6136 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6137 | return; |
6138 | } | |
c9bf0622 | 6139 | |
a70b8144 | 6140 | try |
c9bf0622 TT |
6141 | { |
6142 | /* This isn't really ideal: all the data we allocate on the | |
6143 | objfile's obstack is still uselessly kept around. However, | |
6144 | freeing it seems unsafe. */ | |
484b1090 | 6145 | psymtab_discarder psymtabs (objfile->partial_symtabs.get ()); |
976ca316 | 6146 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 6147 | psymtabs.keep (); |
87d6a7aa | 6148 | |
976ca316 | 6149 | per_objfile->resize_symtabs (); |
af758d11 | 6150 | |
87d6a7aa | 6151 | /* (maybe) store an index in the cache. */ |
976ca316 | 6152 | global_index_cache.store (per_objfile); |
c9bf0622 | 6153 | } |
230d2906 | 6154 | catch (const gdb_exception_error &except) |
492d29ea PA |
6155 | { |
6156 | exception_print (gdb_stderr, except); | |
6157 | } | |
17ee85fc TT |
6158 | |
6159 | /* Finish by setting the local reference to partial symtabs, so that | |
6160 | we don't try to read them again if reading another objfile with the same | |
6161 | BFD. If we can't in fact share, this won't make a difference anyway as | |
6162 | the dwarf2_per_bfd object won't be shared. */ | |
6163 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
c906108c | 6164 | } |
c906108c | 6165 | |
3b80fe9b DE |
6166 | /* Find the base address of the compilation unit for range lists and |
6167 | location lists. It will normally be specified by DW_AT_low_pc. | |
6168 | In DWARF-3 draft 4, the base address could be overridden by | |
6169 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6170 | compilation units with discontinuous ranges. */ | |
6171 | ||
6172 | static void | |
6173 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6174 | { | |
6175 | struct attribute *attr; | |
6176 | ||
2b24b6e4 | 6177 | cu->base_address.reset (); |
3b80fe9b DE |
6178 | |
6179 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6180 | if (attr != nullptr) |
95f982e5 | 6181 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6182 | else |
6183 | { | |
6184 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6185 | if (attr != nullptr) |
95f982e5 | 6186 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6187 | } |
6188 | } | |
6189 | ||
36586728 TT |
6190 | /* Helper function that returns the proper abbrev section for |
6191 | THIS_CU. */ | |
6192 | ||
6193 | static struct dwarf2_section_info * | |
6194 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6195 | { | |
6196 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6197 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6198 | |
6199 | if (this_cu->is_dwz) | |
a7308ce0 | 6200 | abbrev = &dwarf2_get_dwz_file (per_bfd, true)->abbrev; |
36586728 | 6201 | else |
c3699833 | 6202 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6203 | |
6204 | return abbrev; | |
6205 | } | |
6206 | ||
f4dc4d17 DE |
6207 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6208 | ||
6209 | static sect_offset | |
976ca316 | 6210 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6211 | struct dwarf2_section_info *section, |
9c541725 | 6212 | sect_offset sect_off) |
f4dc4d17 | 6213 | { |
96b79293 | 6214 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6215 | const gdb_byte *info_ptr; |
ac298888 | 6216 | unsigned int initial_length_size, offset_size; |
43988095 | 6217 | uint16_t version; |
f4dc4d17 | 6218 | |
976ca316 | 6219 | section->read (per_objfile->objfile); |
9c541725 | 6220 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6221 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6222 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6223 | info_ptr += initial_length_size; |
6224 | ||
6225 | version = read_2_bytes (abfd, info_ptr); | |
6226 | info_ptr += 2; | |
6227 | if (version >= 5) | |
6228 | { | |
6229 | /* Skip unit type and address size. */ | |
6230 | info_ptr += 2; | |
6231 | } | |
6232 | ||
24aa364d | 6233 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6234 | } |
6235 | ||
b83470bf TT |
6236 | /* A partial symtab that is used only for include files. */ |
6237 | struct dwarf2_include_psymtab : public partial_symtab | |
6238 | { | |
6239 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6240 | : partial_symtab (filename, objfile) | |
6241 | { | |
6242 | } | |
6243 | ||
6244 | void read_symtab (struct objfile *objfile) override | |
6245 | { | |
194d088f TV |
6246 | /* It's an include file, no symbols to read for it. |
6247 | Everything is in the includer symtab. */ | |
6248 | ||
6249 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6250 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6251 | model the includer. But if we go the regular route of calling | |
6252 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6253 | to expand the includer, we'll only use expand_psymtab on the includer | |
6254 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6255 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6256 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6257 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6258 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6259 | } |
6260 | ||
6261 | void expand_psymtab (struct objfile *objfile) override | |
6262 | { | |
194d088f TV |
6263 | /* This is not called by read_symtab, and should not be called by any |
6264 | expand_dependencies. */ | |
6265 | gdb_assert (false); | |
b83470bf TT |
6266 | } |
6267 | ||
5717c425 | 6268 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6269 | { |
5717c425 | 6270 | return includer ()->readin_p (objfile); |
b83470bf TT |
6271 | } |
6272 | ||
5717c425 | 6273 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6274 | { |
6275 | return nullptr; | |
6276 | } | |
6277 | ||
6278 | private: | |
194d088f TV |
6279 | partial_symtab *includer () const |
6280 | { | |
6281 | /* An include psymtab has exactly one dependency: the psymtab that | |
6282 | includes it. */ | |
6283 | gdb_assert (this->number_of_dependencies == 1); | |
6284 | return this->dependencies[0]; | |
6285 | } | |
b83470bf TT |
6286 | }; |
6287 | ||
aaa75496 JB |
6288 | /* Allocate a new partial symtab for file named NAME and mark this new |
6289 | partial symtab as being an include of PST. */ | |
6290 | ||
6291 | static void | |
891813be | 6292 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
dda83cd7 | 6293 | struct objfile *objfile) |
aaa75496 | 6294 | { |
b83470bf | 6295 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6296 | |
fbd9ab74 | 6297 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6298 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6299 | |
a9342b62 | 6300 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6301 | subpst->dependencies[0] = pst; |
6302 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6303 | } |
6304 | ||
6305 | /* Read the Line Number Program data and extract the list of files | |
6306 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6307 | partial symtab for each of these included files. */ |
aaa75496 JB |
6308 | |
6309 | static void | |
6310 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6311 | struct die_info *die, |
891813be | 6312 | dwarf2_psymtab *pst) |
aaa75496 | 6313 | { |
fff8551c | 6314 | line_header_up lh; |
d85a05f0 | 6315 | struct attribute *attr; |
aaa75496 | 6316 | |
d85a05f0 | 6317 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e TT |
6318 | if (attr != nullptr && attr->form_is_unsigned ()) |
6319 | lh = dwarf_decode_line_header ((sect_offset) attr->as_unsigned (), cu); | |
aaa75496 JB |
6320 | if (lh == NULL) |
6321 | return; /* No linetable, so no includes. */ | |
6322 | ||
79748972 TT |
6323 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6324 | that we pass in the raw text_low here; that is ok because we're | |
6325 | only decoding the line table to make include partial symtabs, and | |
6326 | so the addresses aren't really used. */ | |
4ae976d1 | 6327 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6328 | pst->raw_text_low (), 1); |
aaa75496 JB |
6329 | } |
6330 | ||
348e048f | 6331 | static hashval_t |
52dc124a | 6332 | hash_signatured_type (const void *item) |
348e048f | 6333 | { |
9a3c8263 SM |
6334 | const struct signatured_type *sig_type |
6335 | = (const struct signatured_type *) item; | |
9a619af0 | 6336 | |
348e048f | 6337 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6338 | return sig_type->signature; |
348e048f DE |
6339 | } |
6340 | ||
6341 | static int | |
52dc124a | 6342 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6343 | { |
9a3c8263 SM |
6344 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6345 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6346 | |
348e048f DE |
6347 | return lhs->signature == rhs->signature; |
6348 | } | |
6349 | ||
1fd400ff TT |
6350 | /* Allocate a hash table for signatured types. */ |
6351 | ||
b0b6a987 | 6352 | static htab_up |
298e9637 | 6353 | allocate_signatured_type_table () |
1fd400ff | 6354 | { |
b0b6a987 TT |
6355 | return htab_up (htab_create_alloc (41, |
6356 | hash_signatured_type, | |
6357 | eq_signatured_type, | |
6358 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6359 | } |
6360 | ||
d467dd73 | 6361 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6362 | |
6363 | static int | |
d467dd73 | 6364 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6365 | { |
9a3c8263 | 6366 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6367 | std::vector<signatured_type *> *all_type_units |
6368 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6369 | |
b2bdb8cf | 6370 | all_type_units->push_back (sigt); |
1fd400ff TT |
6371 | |
6372 | return 1; | |
6373 | } | |
6374 | ||
78d4d2c5 | 6375 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6376 | and fill them into TYPES_HTAB. It will process only type units, |
6377 | therefore DW_UT_type. */ | |
c88ee1f0 | 6378 | |
78d4d2c5 | 6379 | static void |
976ca316 | 6380 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6381 | struct dwo_file *dwo_file, |
b0b6a987 | 6382 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6383 | rcuh_kind section_kind) |
348e048f | 6384 | { |
976ca316 | 6385 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6386 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6387 | bfd *abfd; |
6388 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6389 | |
4bdcc0c1 DE |
6390 | abbrev_section = (dwo_file != NULL |
6391 | ? &dwo_file->sections.abbrev | |
976ca316 | 6392 | : &per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6393 | |
4800761a | 6394 | dwarf_read_debug_printf ("Reading %s for %s", |
6f738b01 SM |
6395 | section->get_name (), |
6396 | abbrev_section->get_file_name ()); | |
09406207 | 6397 | |
96b79293 | 6398 | section->read (objfile); |
78d4d2c5 | 6399 | info_ptr = section->buffer; |
348e048f | 6400 | |
78d4d2c5 JK |
6401 | if (info_ptr == NULL) |
6402 | return; | |
348e048f | 6403 | |
78d4d2c5 JK |
6404 | /* We can't set abfd until now because the section may be empty or |
6405 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6406 | abfd = section->get_bfd_owner (); |
348e048f | 6407 | |
c0ab21c2 TT |
6408 | /* We don't use cutu_reader here because we don't need to read |
6409 | any dies: the signature is in the header. */ | |
3019eac3 | 6410 | |
78d4d2c5 JK |
6411 | end_ptr = info_ptr + section->size; |
6412 | while (info_ptr < end_ptr) | |
6413 | { | |
78d4d2c5 JK |
6414 | struct signatured_type *sig_type; |
6415 | struct dwo_unit *dwo_tu; | |
6416 | void **slot; | |
6417 | const gdb_byte *ptr = info_ptr; | |
6418 | struct comp_unit_head header; | |
6419 | unsigned int length; | |
8b70b953 | 6420 | |
9c541725 | 6421 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6422 | |
a49dd8dd JK |
6423 | /* Initialize it due to a false compiler warning. */ |
6424 | header.signature = -1; | |
9c541725 | 6425 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6426 | |
78d4d2c5 JK |
6427 | /* We need to read the type's signature in order to build the hash |
6428 | table, but we don't need anything else just yet. */ | |
348e048f | 6429 | |
976ca316 | 6430 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6431 | abbrev_section, ptr, section_kind); |
348e048f | 6432 | |
4057dfde | 6433 | length = header.get_length (); |
6caca83c | 6434 | |
78d4d2c5 JK |
6435 | /* Skip dummy type units. */ |
6436 | if (ptr >= info_ptr + length | |
43988095 | 6437 | || peek_abbrev_code (abfd, ptr) == 0 |
d2854d8d CT |
6438 | || (header.unit_type != DW_UT_type |
6439 | && header.unit_type != DW_UT_split_type)) | |
78d4d2c5 JK |
6440 | { |
6441 | info_ptr += length; | |
6442 | continue; | |
6443 | } | |
dee91e82 | 6444 | |
78d4d2c5 JK |
6445 | if (types_htab == NULL) |
6446 | { | |
6447 | if (dwo_file) | |
298e9637 | 6448 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6449 | else |
298e9637 | 6450 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6451 | } |
8b70b953 | 6452 | |
78d4d2c5 JK |
6453 | if (dwo_file) |
6454 | { | |
6455 | sig_type = NULL; | |
976ca316 | 6456 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
78d4d2c5 | 6457 | dwo_tu->dwo_file = dwo_file; |
43988095 | 6458 | dwo_tu->signature = header.signature; |
9c541725 | 6459 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6460 | dwo_tu->section = section; |
9c541725 | 6461 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6462 | dwo_tu->length = length; |
6463 | } | |
6464 | else | |
6465 | { | |
6466 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6467 | The real type_offset is in the DWO file. */ | |
6468 | dwo_tu = NULL; | |
976ca316 | 6469 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6470 | sig_type->signature = header.signature; |
9c541725 | 6471 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6472 | sig_type->per_cu.is_debug_types = 1; |
6473 | sig_type->per_cu.section = section; | |
9c541725 | 6474 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6475 | sig_type->per_cu.length = length; |
6476 | } | |
6477 | ||
b0b6a987 | 6478 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6479 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6480 | INSERT); | |
6481 | gdb_assert (slot != NULL); | |
6482 | if (*slot != NULL) | |
6483 | { | |
9c541725 | 6484 | sect_offset dup_sect_off; |
0349ea22 | 6485 | |
3019eac3 DE |
6486 | if (dwo_file) |
6487 | { | |
78d4d2c5 JK |
6488 | const struct dwo_unit *dup_tu |
6489 | = (const struct dwo_unit *) *slot; | |
6490 | ||
9c541725 | 6491 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6492 | } |
6493 | else | |
6494 | { | |
78d4d2c5 JK |
6495 | const struct signatured_type *dup_tu |
6496 | = (const struct signatured_type *) *slot; | |
6497 | ||
9c541725 | 6498 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6499 | } |
8b70b953 | 6500 | |
b98664d3 | 6501 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6502 | " the entry at offset %s, signature %s"), |
6503 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6504 | hex_string (header.signature)); |
78d4d2c5 JK |
6505 | } |
6506 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6507 | |
6f738b01 SM |
6508 | dwarf_read_debug_printf_v (" offset %s, signature %s", |
6509 | sect_offset_str (sect_off), | |
6510 | hex_string (header.signature)); | |
3019eac3 | 6511 | |
78d4d2c5 JK |
6512 | info_ptr += length; |
6513 | } | |
6514 | } | |
3019eac3 | 6515 | |
78d4d2c5 JK |
6516 | /* Create the hash table of all entries in the .debug_types |
6517 | (or .debug_types.dwo) section(s). | |
6518 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6519 | otherwise it is NULL. | |
b3c8eb43 | 6520 | |
78d4d2c5 | 6521 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6522 | |
78d4d2c5 | 6523 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6524 | |
78d4d2c5 | 6525 | static void |
976ca316 | 6526 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6527 | struct dwo_file *dwo_file, |
fd5866f6 | 6528 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6529 | htab_up &types_htab) |
78d4d2c5 | 6530 | { |
fd5866f6 | 6531 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6532 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6533 | rcuh_kind::TYPE); | |
3019eac3 DE |
6534 | } |
6535 | ||
6536 | /* Create the hash table of all entries in the .debug_types section, | |
6537 | and initialize all_type_units. | |
6538 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6539 | otherwise non-zero. */ | |
6540 | ||
6541 | static int | |
976ca316 | 6542 | create_all_type_units (dwarf2_per_objfile *per_objfile) |
3019eac3 | 6543 | { |
b0b6a987 | 6544 | htab_up types_htab; |
3019eac3 | 6545 | |
976ca316 SM |
6546 | create_debug_type_hash_table (per_objfile, NULL, &per_objfile->per_bfd->info, |
6547 | types_htab, rcuh_kind::COMPILE); | |
6548 | create_debug_types_hash_table (per_objfile, NULL, per_objfile->per_bfd->types, | |
6549 | types_htab); | |
3019eac3 DE |
6550 | if (types_htab == NULL) |
6551 | { | |
976ca316 | 6552 | per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6553 | return 0; |
6554 | } | |
6555 | ||
976ca316 | 6556 | per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6557 | |
976ca316 SM |
6558 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
6559 | per_objfile->per_bfd->all_type_units.reserve | |
6560 | (htab_elements (per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6561 | |
976ca316 | 6562 | htab_traverse_noresize (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6563 | add_signatured_type_cu_to_table, |
976ca316 | 6564 | &per_objfile->per_bfd->all_type_units); |
1fd400ff | 6565 | |
348e048f DE |
6566 | return 1; |
6567 | } | |
6568 | ||
5989a64e | 6569 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6570 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6571 | Otherwise we find one. */ | |
6572 | ||
6573 | static struct signatured_type * | |
976ca316 | 6574 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6575 | { |
976ca316 SM |
6576 | if (per_objfile->per_bfd->all_type_units.size () |
6577 | == per_objfile->per_bfd->all_type_units.capacity ()) | |
6578 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6579 | |
976ca316 | 6580 | signatured_type *sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6581 | |
976ca316 | 6582 | per_objfile->resize_symtabs (); |
af758d11 | 6583 | |
976ca316 | 6584 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6585 | sig_type->signature = sig; |
6586 | sig_type->per_cu.is_debug_types = 1; | |
976ca316 | 6587 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6588 | { |
6589 | sig_type->per_cu.v.quick = | |
976ca316 | 6590 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6591 | struct dwarf2_per_cu_quick_data); |
6592 | } | |
6593 | ||
6594 | if (slot == NULL) | |
6595 | { | |
976ca316 | 6596 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6597 | sig_type, INSERT); |
6598 | } | |
6599 | gdb_assert (*slot == NULL); | |
6600 | *slot = sig_type; | |
6601 | /* The rest of sig_type must be filled in by the caller. */ | |
6602 | return sig_type; | |
6603 | } | |
6604 | ||
a2ce51a0 DE |
6605 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6606 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6607 | ||
6608 | static void | |
976ca316 | 6609 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6610 | struct signatured_type *sig_entry, |
6611 | struct dwo_unit *dwo_entry) | |
6612 | { | |
976ca316 | 6613 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6614 | |
7ee85ab1 | 6615 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6616 | gdb_assert (! sig_entry->per_cu.queued); |
976ca316 | 6617 | gdb_assert (per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6618 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6619 | { |
6620 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
976ca316 | 6621 | gdb_assert (!per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6622 | } |
6623 | else | |
6624 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6625 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6626 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6627 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6628 | gdb_assert (sig_entry->dwo_unit == NULL); |
6629 | ||
6630 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6631 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6632 | sig_entry->per_cu.length = dwo_entry->length; |
6633 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6634 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6635 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6636 | sig_entry->dwo_unit = dwo_entry; | |
6637 | } | |
6638 | ||
6639 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6640 | If we haven't read the TU yet, create the signatured_type data structure |
6641 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6642 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6643 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6644 | containing that CU. Otherwise we could end up reading several other DWO | |
6645 | files (due to comdat folding) to process the transitive closure of all the | |
6646 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6647 | type signature that it needs. | |
a2ce51a0 DE |
6648 | We only do this for .gdb_index because in the psymtab case we already have |
6649 | to read all the DWOs to build the type unit groups. */ | |
6650 | ||
6651 | static struct signatured_type * | |
6652 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6653 | { | |
976ca316 | 6654 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6655 | struct dwo_file *dwo_file; |
6656 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6657 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6658 | void **slot; |
a2ce51a0 | 6659 | |
976ca316 | 6660 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6661 | |
6aa5f3a6 DE |
6662 | /* If TU skeletons have been removed then we may not have read in any |
6663 | TUs yet. */ | |
976ca316 SM |
6664 | if (per_objfile->per_bfd->signatured_types == NULL) |
6665 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6666 | |
6667 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6668 | Use the global signatured_types array to do our own comdat-folding |
6669 | of types. If this is the first time we're reading this TU, and | |
6670 | the TU has an entry in .gdb_index, replace the recorded data from | |
6671 | .gdb_index with this TU. */ | |
a2ce51a0 | 6672 | |
a2ce51a0 | 6673 | find_sig_entry.signature = sig; |
976ca316 | 6674 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6675 | &find_sig_entry, INSERT); |
9a3c8263 | 6676 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6677 | |
6678 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6679 | read. Don't reassign the global entry to point to this DWO if that's |
6680 | the case. Also note that if the TU is already being read, it may not | |
6681 | have come from a DWO, the program may be a mix of Fission-compiled | |
6682 | code and non-Fission-compiled code. */ | |
6683 | ||
6684 | /* Have we already tried to read this TU? | |
6685 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6686 | needn't exist in the global table yet). */ | |
6687 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6688 | return sig_entry; |
6689 | ||
6aa5f3a6 DE |
6690 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6691 | dwo_unit of the TU itself. */ | |
6692 | dwo_file = cu->dwo_unit->dwo_file; | |
6693 | ||
a2ce51a0 DE |
6694 | /* Ok, this is the first time we're reading this TU. */ |
6695 | if (dwo_file->tus == NULL) | |
6696 | return NULL; | |
6697 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6698 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6699 | &find_dwo_entry); | |
a2ce51a0 DE |
6700 | if (dwo_entry == NULL) |
6701 | return NULL; | |
6702 | ||
6aa5f3a6 DE |
6703 | /* If the global table doesn't have an entry for this TU, add one. */ |
6704 | if (sig_entry == NULL) | |
976ca316 | 6705 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6706 | |
976ca316 | 6707 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6708 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6709 | return sig_entry; |
6710 | } | |
6711 | ||
a2ce51a0 DE |
6712 | /* Subroutine of lookup_signatured_type. |
6713 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6714 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6715 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6716 | |
6717 | static struct signatured_type * | |
6718 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6719 | { | |
976ca316 SM |
6720 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6721 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6722 | struct dwo_unit *dwo_entry; |
6723 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6724 | void **slot; |
a2ce51a0 | 6725 | |
976ca316 | 6726 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6727 | gdb_assert (dwp_file != NULL); |
6728 | ||
6aa5f3a6 DE |
6729 | /* If TU skeletons have been removed then we may not have read in any |
6730 | TUs yet. */ | |
976ca316 SM |
6731 | if (per_objfile->per_bfd->signatured_types == NULL) |
6732 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6733 | |
6aa5f3a6 | 6734 | find_sig_entry.signature = sig; |
976ca316 | 6735 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6736 | &find_sig_entry, INSERT); |
9a3c8263 | 6737 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6738 | |
6739 | /* Have we already tried to read this TU? | |
6740 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6741 | needn't exist in the global table yet). */ | |
6742 | if (sig_entry != NULL) | |
6743 | return sig_entry; | |
6744 | ||
a2ce51a0 DE |
6745 | if (dwp_file->tus == NULL) |
6746 | return NULL; | |
976ca316 SM |
6747 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6748 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6749 | if (dwo_entry == NULL) |
6750 | return NULL; | |
6751 | ||
976ca316 SM |
6752 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6753 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6754 | |
a2ce51a0 DE |
6755 | return sig_entry; |
6756 | } | |
6757 | ||
380bca97 | 6758 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6759 | Returns NULL if signature SIG is not present in the table. |
6760 | It is up to the caller to complain about this. */ | |
348e048f DE |
6761 | |
6762 | static struct signatured_type * | |
a2ce51a0 | 6763 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6764 | { |
976ca316 | 6765 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6766 | |
976ca316 | 6767 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6768 | { |
6769 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6770 | These cases require special processing. */ | |
976ca316 | 6771 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6772 | return lookup_dwo_signatured_type (cu, sig); |
6773 | else | |
6774 | return lookup_dwp_signatured_type (cu, sig); | |
6775 | } | |
6776 | else | |
6777 | { | |
6778 | struct signatured_type find_entry, *entry; | |
348e048f | 6779 | |
976ca316 | 6780 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6781 | return NULL; |
6782 | find_entry.signature = sig; | |
9a3c8263 | 6783 | entry = ((struct signatured_type *) |
976ca316 | 6784 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6785 | &find_entry)); |
a2ce51a0 DE |
6786 | return entry; |
6787 | } | |
348e048f | 6788 | } |
18a8505e | 6789 | |
42e7ad6c | 6790 | /* Low level DIE reading support. */ |
348e048f | 6791 | |
d85a05f0 DJ |
6792 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6793 | ||
6794 | static void | |
6795 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6796 | struct dwarf2_cu *cu, |
3019eac3 | 6797 | struct dwarf2_section_info *section, |
685af9cd TT |
6798 | struct dwo_file *dwo_file, |
6799 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6800 | { |
fceca515 | 6801 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6802 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6803 | reader->cu = cu; |
3019eac3 | 6804 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6805 | reader->die_section = section; |
6806 | reader->buffer = section->buffer; | |
f664829e | 6807 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6808 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6809 | } |
6810 | ||
c0ab21c2 | 6811 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6812 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6813 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6814 | already. |
6815 | ||
6816 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6817 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6818 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6819 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6820 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6821 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6822 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6823 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6824 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6825 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6826 | kept around for at least as long as *RESULT_READER. | |
6827 | ||
b0c7bfa9 DE |
6828 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6829 | ||
6830 | static int | |
4ab09049 | 6831 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6832 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6833 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6834 | const char *stub_comp_dir, |
b0c7bfa9 | 6835 | struct die_reader_specs *result_reader, |
d521ce57 | 6836 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6837 | struct die_info **result_comp_unit_die, |
685af9cd | 6838 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6839 | { |
976ca316 | 6840 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6841 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6842 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6843 | bfd *abfd; |
d521ce57 | 6844 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6845 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6846 | int i,num_extra_attrs; | |
6847 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6848 | struct die_info *comp_unit_die; |
6849 | ||
b0aeadb3 DE |
6850 | /* At most one of these may be provided. */ |
6851 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6852 | |
b0c7bfa9 DE |
6853 | /* These attributes aren't processed until later: |
6854 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6855 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6856 | referenced later. However, these attributes are found in the stub | |
6857 | which we won't have later. In order to not impose this complication | |
6858 | on the rest of the code, we read them here and copy them to the | |
6859 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6860 | |
6861 | stmt_list = NULL; | |
6862 | low_pc = NULL; | |
6863 | high_pc = NULL; | |
6864 | ranges = NULL; | |
6865 | comp_dir = NULL; | |
6866 | ||
6867 | if (stub_comp_unit_die != NULL) | |
6868 | { | |
6869 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6870 | DWO file. */ | |
4ab09049 | 6871 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6872 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6873 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6874 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6875 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6876 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6877 | ||
a39fdb41 | 6878 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6879 | |
2b0c7f41 SM |
6880 | /* There should be a DW_AT_GNU_ranges_base attribute here (if needed). |
6881 | We need the value before we can process DW_AT_ranges values from the | |
6882 | DWO. */ | |
6883 | cu->gnu_ranges_base = stub_comp_unit_die->gnu_ranges_base (); | |
6884 | ||
6885 | /* For DWARF5: record the DW_AT_rnglists_base value from the skeleton. If | |
6886 | there are attributes of form DW_FORM_rnglistx in the skeleton, they'll | |
6887 | need the rnglists base. Attributes of form DW_FORM_rnglistx in the | |
6888 | split unit don't use it, as the DWO has its own .debug_rnglists.dwo | |
6889 | section. */ | |
6890 | cu->rnglists_base = stub_comp_unit_die->rnglists_base (); | |
b0c7bfa9 | 6891 | } |
a2ce51a0 DE |
6892 | else if (stub_comp_dir != NULL) |
6893 | { | |
6894 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
fe56917a | 6895 | comp_dir = OBSTACK_ZALLOC (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6896 | comp_dir->name = DW_AT_comp_dir; |
6897 | comp_dir->form = DW_FORM_string; | |
c6481205 | 6898 | comp_dir->set_string_noncanonical (stub_comp_dir); |
a2ce51a0 | 6899 | } |
b0c7bfa9 DE |
6900 | |
6901 | /* Set up for reading the DWO CU/TU. */ | |
6902 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6903 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6904 | section->read (objfile); |
6905 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6906 | begin_info_ptr = info_ptr = (section->buffer |
6907 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6908 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6909 | |
4ab09049 | 6910 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6911 | { |
4ab09049 | 6912 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6913 | |
976ca316 SM |
6914 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6915 | section, dwo_abbrev_section, | |
43988095 | 6916 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6917 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6918 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6919 | { |
6920 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6921 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6922 | hex_string (sig_type->signature), |
43988095 | 6923 | hex_string (cu->header.signature), |
9d8780f0 | 6924 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6925 | bfd_get_filename (abfd)); |
6926 | } | |
9c541725 | 6927 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6928 | /* For DWOs coming from DWP files, we don't know the CU length |
6929 | nor the type's offset in the TU until now. */ | |
4057dfde | 6930 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6931 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6932 | |
6933 | /* Establish the type offset that can be used to lookup the type. | |
6934 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6935 | sig_type->type_offset_in_section |
6936 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6937 | } |
6938 | else | |
6939 | { | |
976ca316 SM |
6940 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6941 | section, dwo_abbrev_section, | |
43988095 | 6942 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6943 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6944 | /* For DWOs coming from DWP files, we don't know the CU length |
6945 | until now. */ | |
4057dfde | 6946 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6947 | } |
6948 | ||
606decb2 | 6949 | dwo_abbrev_section->read (objfile); |
685af9cd | 6950 | *result_dwo_abbrev_table |
606decb2 | 6951 | = abbrev_table::read (dwo_abbrev_section, cu->header.abbrev_sect_off); |
685af9cd TT |
6952 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6953 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6954 | |
6955 | /* Read in the die, but leave space to copy over the attributes | |
6956 | from the stub. This has the benefit of simplifying the rest of | |
6957 | the code - all the work to maintain the illusion of a single | |
6958 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6959 | num_extra_attrs = ((stmt_list != NULL) | |
6960 | + (low_pc != NULL) | |
6961 | + (high_pc != NULL) | |
6962 | + (ranges != NULL) | |
6963 | + (comp_dir != NULL)); | |
6964 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6965 | num_extra_attrs); |
b0c7bfa9 DE |
6966 | |
6967 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6968 | comp_unit_die = *result_comp_unit_die; | |
6969 | i = comp_unit_die->num_attrs; | |
6970 | if (stmt_list != NULL) | |
6971 | comp_unit_die->attrs[i++] = *stmt_list; | |
6972 | if (low_pc != NULL) | |
6973 | comp_unit_die->attrs[i++] = *low_pc; | |
6974 | if (high_pc != NULL) | |
6975 | comp_unit_die->attrs[i++] = *high_pc; | |
6976 | if (ranges != NULL) | |
6977 | comp_unit_die->attrs[i++] = *ranges; | |
6978 | if (comp_dir != NULL) | |
6979 | comp_unit_die->attrs[i++] = *comp_dir; | |
6980 | comp_unit_die->num_attrs += num_extra_attrs; | |
6981 | ||
b4f54984 | 6982 | if (dwarf_die_debug) |
bf6af496 DE |
6983 | { |
6984 | fprintf_unfiltered (gdb_stdlog, | |
6985 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6986 | section->get_name (), |
bf6af496 DE |
6987 | (unsigned) (begin_info_ptr - section->buffer), |
6988 | bfd_get_filename (abfd)); | |
b4f54984 | 6989 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6990 | } |
6991 | ||
b0c7bfa9 DE |
6992 | /* Skip dummy compilation units. */ |
6993 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6994 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6995 | return 0; | |
6996 | ||
6997 | *result_info_ptr = info_ptr; | |
6998 | return 1; | |
6999 | } | |
7000 | ||
a084a2a6 AT |
7001 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
7002 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
7003 | signature is part of the header. */ | |
7004 | static gdb::optional<ULONGEST> | |
7005 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
7006 | { | |
7007 | if (cu->header.version >= 5) | |
7008 | return cu->header.signature; | |
7009 | struct attribute *attr; | |
7010 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
529908cb | 7011 | if (attr == nullptr || !attr->form_is_unsigned ()) |
a084a2a6 | 7012 | return gdb::optional<ULONGEST> (); |
529908cb | 7013 | return attr->as_unsigned (); |
a084a2a6 AT |
7014 | } |
7015 | ||
c0ab21c2 | 7016 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7017 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 7018 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7019 | |
7020 | static struct dwo_unit * | |
4ab09049 | 7021 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 7022 | { |
4ab09049 | 7023 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 7024 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7025 | const char *comp_dir; |
b0c7bfa9 | 7026 | |
a2ce51a0 DE |
7027 | gdb_assert (cu != NULL); |
7028 | ||
b0c7bfa9 | 7029 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7030 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7031 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 7032 | |
4ab09049 SM |
7033 | if (per_cu->is_debug_types) |
7034 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
7035 | else |
7036 | { | |
a084a2a6 | 7037 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 7038 | |
a084a2a6 | 7039 | if (!signature.has_value ()) |
b0c7bfa9 DE |
7040 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7041 | " [in module %s]"), | |
4ab09049 SM |
7042 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
7043 | ||
7044 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
7045 | } |
7046 | ||
b0c7bfa9 DE |
7047 | return dwo_unit; |
7048 | } | |
7049 | ||
c0ab21c2 | 7050 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7051 | See it for a description of the parameters. |
fcd3b13d | 7052 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7053 | |
c0ab21c2 | 7054 | void |
9e021579 SM |
7055 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
7056 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 7057 | dwarf2_cu *existing_cu) |
a2ce51a0 | 7058 | { |
a2ce51a0 | 7059 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7060 | |
7061 | /* Verify we can do the following downcast, and that we have the | |
7062 | data we need. */ | |
7063 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7064 | sig_type = (struct signatured_type *) this_cu; | |
7065 | gdb_assert (sig_type->dwo_unit != NULL); | |
7066 | ||
2e671100 SM |
7067 | dwarf2_cu *cu; |
7068 | ||
7069 | if (existing_cu != nullptr) | |
6aa5f3a6 | 7070 | { |
2e671100 SM |
7071 | cu = existing_cu; |
7072 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7073 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7074 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7075 | } |
7076 | else | |
7077 | { | |
7188ed02 | 7078 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7079 | in per_objfile yet. */ |
7188ed02 | 7080 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
9e021579 | 7081 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 7082 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
7083 | } |
7084 | ||
7085 | /* A future optimization, if needed, would be to use an existing | |
7086 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7087 | could share abbrev tables. */ | |
a2ce51a0 | 7088 | |
2e671100 | 7089 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7090 | NULL /* stub_comp_unit_die */, |
7091 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 7092 | this, &info_ptr, |
3e225074 | 7093 | &comp_unit_die, |
c0ab21c2 | 7094 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7095 | { |
7096 | /* Dummy die. */ | |
c0ab21c2 | 7097 | dummy_p = true; |
a2ce51a0 | 7098 | } |
a2ce51a0 DE |
7099 | } |
7100 | ||
fd820528 | 7101 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7102 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7103 | |
f4dc4d17 DE |
7104 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7105 | Otherwise the table specified in the comp unit header is read in and used. | |
7106 | This is an optimization for when we already have the abbrev table. | |
7107 | ||
2e671100 SM |
7108 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
7109 | allocated. */ | |
aaa75496 | 7110 | |
ab432490 | 7111 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7112 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 7113 | struct abbrev_table *abbrev_table, |
2e671100 | 7114 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
7115 | bool skip_partial) |
7116 | : die_reader_specs {}, | |
6751ebae | 7117 | m_this_cu (this_cu) |
c906108c | 7118 | { |
976ca316 | 7119 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7120 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7121 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 7122 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7123 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7124 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7125 | /* Non-zero if CU currently points to a DWO file and we need to |
7126 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7127 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7128 | int rereading_dwo_cu = 0; |
c906108c | 7129 | |
b4f54984 | 7130 | if (dwarf_die_debug) |
9d8780f0 | 7131 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7132 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7133 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7134 | |
a2ce51a0 DE |
7135 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7136 | file (instead of going through the stub), short-circuit all of this. */ | |
7137 | if (this_cu->reading_dwo_directly) | |
7138 | { | |
7139 | /* Narrow down the scope of possibilities to have to understand. */ | |
7140 | gdb_assert (this_cu->is_debug_types); | |
7141 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 7142 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
7143 | return; |
7144 | } | |
7145 | ||
dee91e82 | 7146 | /* This is cheap if the section is already read in. */ |
96b79293 | 7147 | section->read (objfile); |
dee91e82 | 7148 | |
9c541725 | 7149 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7150 | |
7151 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7152 | |
2e671100 SM |
7153 | dwarf2_cu *cu; |
7154 | ||
7155 | if (existing_cu != nullptr) | |
dee91e82 | 7156 | { |
2e671100 | 7157 | cu = existing_cu; |
42e7ad6c DE |
7158 | /* If this CU is from a DWO file we need to start over, we need to |
7159 | refetch the attributes from the skeleton CU. | |
7160 | This could be optimized by retrieving those attributes from when we | |
7161 | were here the first time: the previous comp_unit_die was stored in | |
7162 | comp_unit_obstack. But there's no data yet that we need this | |
7163 | optimization. */ | |
7164 | if (cu->dwo_unit != NULL) | |
7165 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7166 | } |
7167 | else | |
7168 | { | |
7188ed02 | 7169 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7170 | in per_objfile yet. */ |
976ca316 SM |
7171 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
7172 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 7173 | cu = m_new_cu.get (); |
42e7ad6c | 7174 | } |
dee91e82 | 7175 | |
b0c7bfa9 | 7176 | /* Get the header. */ |
9c541725 | 7177 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7178 | { |
7179 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7180 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7181 | } |
7182 | else | |
7183 | { | |
3019eac3 | 7184 | if (this_cu->is_debug_types) |
dee91e82 | 7185 | { |
976ca316 SM |
7186 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7187 | section, abbrev_section, | |
7188 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 7189 | |
42e7ad6c DE |
7190 | /* Since per_cu is the first member of struct signatured_type, |
7191 | we can go from a pointer to one to a pointer to the other. */ | |
7192 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7193 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7194 | gdb_assert (sig_type->type_offset_in_tu |
7195 | == cu->header.type_cu_offset_in_tu); | |
7196 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7197 | |
42e7ad6c DE |
7198 | /* LENGTH has not been set yet for type units if we're |
7199 | using .gdb_index. */ | |
4057dfde | 7200 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7201 | |
7202 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7203 | sig_type->type_offset_in_section = |
7204 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7205 | |
7206 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7207 | } |
7208 | else | |
7209 | { | |
976ca316 SM |
7210 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7211 | section, abbrev_section, | |
43988095 JK |
7212 | info_ptr, |
7213 | rcuh_kind::COMPILE); | |
dee91e82 | 7214 | |
9c541725 | 7215 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7216 | if (this_cu->length == 0) |
7217 | this_cu->length = cu->header.get_length (); | |
7218 | else | |
7219 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7220 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7221 | } |
7222 | } | |
10b3939b | 7223 | |
6caca83c | 7224 | /* Skip dummy compilation units. */ |
dee91e82 | 7225 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7226 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7227 | { |
7228 | dummy_p = true; | |
7229 | return; | |
7230 | } | |
6caca83c | 7231 | |
433df2d4 DE |
7232 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7233 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7234 | done. */ |
f4dc4d17 | 7235 | if (abbrev_table != NULL) |
685af9cd TT |
7236 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7237 | else | |
f4dc4d17 | 7238 | { |
606decb2 | 7239 | abbrev_section->read (objfile); |
c0ab21c2 | 7240 | m_abbrev_table_holder |
606decb2 | 7241 | = abbrev_table::read (abbrev_section, cu->header.abbrev_sect_off); |
c0ab21c2 | 7242 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7243 | } |
af703f96 | 7244 | |
dee91e82 | 7245 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7246 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7247 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7248 | |
58f0c718 | 7249 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7250 | { |
7251 | dummy_p = true; | |
7252 | return; | |
7253 | } | |
58f0c718 | 7254 | |
b0c7bfa9 | 7255 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7256 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7257 | table from the DWO file and pass the ownership over to us. It will be | |
7258 | referenced from READER, so we must make sure to free it after we're done | |
7259 | with READER. | |
7260 | ||
b0c7bfa9 DE |
7261 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7262 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7263 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7264 | if (dwo_name != nullptr) |
3019eac3 | 7265 | { |
3019eac3 | 7266 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7267 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7268 | |
3e225074 | 7269 | if (comp_unit_die->has_children) |
6a506a2d | 7270 | { |
b98664d3 | 7271 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7272 | " has children (offset %s) [in module %s]"), |
7273 | sect_offset_str (this_cu->sect_off), | |
7274 | bfd_get_filename (abfd)); | |
6a506a2d | 7275 | } |
4ab09049 | 7276 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7277 | if (dwo_unit != NULL) |
3019eac3 | 7278 | { |
4ab09049 | 7279 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7280 | comp_unit_die, NULL, |
c0ab21c2 | 7281 | this, &info_ptr, |
3e225074 | 7282 | &dwo_comp_unit_die, |
c0ab21c2 | 7283 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7284 | { |
7285 | /* Dummy die. */ | |
c0ab21c2 | 7286 | dummy_p = true; |
6a506a2d DE |
7287 | return; |
7288 | } | |
7289 | comp_unit_die = dwo_comp_unit_die; | |
7290 | } | |
7291 | else | |
7292 | { | |
7293 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7294 | the stub. A complaint has already been logged. There's | |
7295 | not much more we can do except pass on the stub DIE to | |
7296 | die_reader_func. We don't want to throw an error on bad | |
7297 | debug info. */ | |
3019eac3 DE |
7298 | } |
7299 | } | |
c0ab21c2 | 7300 | } |
3019eac3 | 7301 | |
6751ebae TT |
7302 | void |
7303 | cutu_reader::keep () | |
c0ab21c2 | 7304 | { |
b0c7bfa9 | 7305 | /* Done, clean up. */ |
6751ebae TT |
7306 | gdb_assert (!dummy_p); |
7307 | if (m_new_cu != NULL) | |
348e048f | 7308 | { |
7188ed02 | 7309 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
dda83cd7 | 7310 | now. */ |
7188ed02 SM |
7311 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; |
7312 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7313 | } |
dee91e82 DE |
7314 | } |
7315 | ||
18a8505e AT |
7316 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7317 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7318 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7319 | |
7320 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7321 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7322 | |
7323 | We fill in THIS_CU->length. | |
7324 | ||
dee91e82 | 7325 | THIS_CU->cu is always freed when done. |
3019eac3 | 7326 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7327 | to care whether it refers to the "main" CU or the DWO CU. |
7328 | ||
7329 | When parent_cu is passed, it is used to provide a default value for | |
7330 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7331 | |
ab432490 | 7332 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7333 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
7334 | struct dwarf2_cu *parent_cu, |
7335 | struct dwo_file *dwo_file) | |
7336 | : die_reader_specs {}, | |
7337 | m_this_cu (this_cu) | |
dee91e82 | 7338 | { |
976ca316 | 7339 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7340 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7341 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7342 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7343 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7344 | |
b4f54984 | 7345 | if (dwarf_die_debug) |
9d8780f0 | 7346 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7347 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7348 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7349 | |
976ca316 | 7350 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7351 | |
33e80786 DE |
7352 | abbrev_section = (dwo_file != NULL |
7353 | ? &dwo_file->sections.abbrev | |
7354 | : get_abbrev_section_for_cu (this_cu)); | |
7355 | ||
dee91e82 | 7356 | /* This is cheap if the section is already read in. */ |
96b79293 | 7357 | section->read (objfile); |
dee91e82 | 7358 | |
976ca316 | 7359 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 7360 | |
9c541725 | 7361 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
7362 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
7363 | section, abbrev_section, info_ptr, | |
43988095 JK |
7364 | (this_cu->is_debug_types |
7365 | ? rcuh_kind::TYPE | |
7366 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7367 | |
18a8505e AT |
7368 | if (parent_cu != nullptr) |
7369 | { | |
c0ab21c2 TT |
7370 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7371 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7372 | } |
4057dfde | 7373 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7374 | |
7375 | /* Skip dummy compilation units. */ | |
7376 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7377 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7378 | { |
7379 | dummy_p = true; | |
7380 | return; | |
7381 | } | |
72bf9492 | 7382 | |
606decb2 | 7383 | abbrev_section->read (objfile); |
c0ab21c2 | 7384 | m_abbrev_table_holder |
606decb2 | 7385 | = abbrev_table::read (abbrev_section, m_new_cu->header.abbrev_sect_off); |
dee91e82 | 7386 | |
c0ab21c2 TT |
7387 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7388 | m_abbrev_table_holder.get ()); | |
3e225074 | 7389 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7390 | } |
7391 | ||
0018ea6f DE |
7392 | \f |
7393 | /* Type Unit Groups. | |
dee91e82 | 7394 | |
0018ea6f DE |
7395 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7396 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7397 | so that all types coming from the same compilation (.o file) are grouped | |
7398 | together. A future step could be to put the types in the same symtab as | |
7399 | the CU the types ultimately came from. */ | |
ff013f42 | 7400 | |
f4dc4d17 DE |
7401 | static hashval_t |
7402 | hash_type_unit_group (const void *item) | |
7403 | { | |
9a3c8263 SM |
7404 | const struct type_unit_group *tu_group |
7405 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7406 | |
094b34ac | 7407 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7408 | } |
348e048f DE |
7409 | |
7410 | static int | |
f4dc4d17 | 7411 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7412 | { |
9a3c8263 SM |
7413 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7414 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7415 | |
094b34ac | 7416 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7417 | } |
348e048f | 7418 | |
f4dc4d17 DE |
7419 | /* Allocate a hash table for type unit groups. */ |
7420 | ||
eaa5fa8b | 7421 | static htab_up |
298e9637 | 7422 | allocate_type_unit_groups_table () |
f4dc4d17 | 7423 | { |
eaa5fa8b TT |
7424 | return htab_up (htab_create_alloc (3, |
7425 | hash_type_unit_group, | |
7426 | eq_type_unit_group, | |
7427 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7428 | } |
dee91e82 | 7429 | |
f4dc4d17 DE |
7430 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7431 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7432 | of any one psymtab grow too big. */ | |
7433 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7434 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7435 | |
094b34ac | 7436 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7437 | Create the type_unit_group object used to hold one or more TUs. */ |
7438 | ||
7439 | static struct type_unit_group * | |
094b34ac | 7440 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7441 | { |
976ca316 SM |
7442 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7443 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
094b34ac | 7444 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7445 | struct type_unit_group *tu_group; |
f4dc4d17 | 7446 | |
976ca316 | 7447 | tu_group = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, type_unit_group); |
094b34ac | 7448 | per_cu = &tu_group->per_cu; |
1859c670 | 7449 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7450 | |
1859c670 | 7451 | if (per_bfd->using_index) |
094b34ac | 7452 | { |
1859c670 | 7453 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7454 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7455 | } |
7456 | else | |
7457 | { | |
9c541725 | 7458 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7459 | dwarf2_psymtab *pst; |
528e1572 | 7460 | std::string name; |
094b34ac DE |
7461 | |
7462 | /* Give the symtab a useful name for debug purposes. */ | |
7463 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7464 | name = string_printf ("<type_units_%d>", |
7465 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7466 | else |
528e1572 | 7467 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7468 | |
976ca316 | 7469 | pst = create_partial_symtab (per_cu, per_objfile, name.c_str ()); |
6d94535f | 7470 | pst->anonymous = true; |
094b34ac | 7471 | } |
f4dc4d17 | 7472 | |
094b34ac | 7473 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7474 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7475 | |
7476 | return tu_group; | |
7477 | } | |
7478 | ||
094b34ac DE |
7479 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7480 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7481 | |
7482 | static struct type_unit_group * | |
ff39bb5e | 7483 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7484 | { |
976ca316 SM |
7485 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7486 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7487 | struct type_unit_group *tu_group; |
7488 | void **slot; | |
7489 | unsigned int line_offset; | |
7490 | struct type_unit_group type_unit_group_for_lookup; | |
7491 | ||
976ca316 SM |
7492 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7493 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7494 | |
7495 | /* Do we need to create a new group, or can we use an existing one? */ | |
7496 | ||
529908cb | 7497 | if (stmt_list != nullptr && stmt_list->form_is_unsigned ()) |
f4dc4d17 | 7498 | { |
529908cb | 7499 | line_offset = stmt_list->as_unsigned (); |
f4dc4d17 DE |
7500 | ++tu_stats->nr_symtab_sharers; |
7501 | } | |
7502 | else | |
7503 | { | |
7504 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7505 | We can do various things here like create one group per TU or | |
7506 | spread them over multiple groups to split up the expansion work. | |
7507 | To avoid worst case scenarios (too many groups or too large groups) | |
7508 | we, umm, group them in bunches. */ | |
7509 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7510 | | (tu_stats->nr_stmt_less_type_units | |
7511 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7512 | ++tu_stats->nr_stmt_less_type_units; | |
7513 | } | |
7514 | ||
094b34ac | 7515 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7516 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7517 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7518 | &type_unit_group_for_lookup, INSERT); |
7519 | if (*slot != NULL) | |
7520 | { | |
9a3c8263 | 7521 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7522 | gdb_assert (tu_group != NULL); |
7523 | } | |
7524 | else | |
7525 | { | |
9c541725 | 7526 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7527 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7528 | *slot = tu_group; |
7529 | ++tu_stats->nr_symtabs; | |
7530 | } | |
7531 | ||
7532 | return tu_group; | |
7533 | } | |
0018ea6f DE |
7534 | \f |
7535 | /* Partial symbol tables. */ | |
7536 | ||
7537 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7538 | ||
7539 | The caller must fill in the following details: | |
7540 | dirname, textlow, texthigh. */ | |
7541 | ||
891813be | 7542 | static dwarf2_psymtab * |
7aa104c4 SM |
7543 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7544 | dwarf2_per_objfile *per_objfile, | |
7545 | const char *name) | |
0018ea6f | 7546 | { |
7aa104c4 | 7547 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7548 | dwarf2_psymtab *pst; |
0018ea6f | 7549 | |
9f4e76a4 | 7550 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7551 | |
6d94535f | 7552 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7553 | |
7554 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7555 | per_cu->v.psymtab = pst; |
7556 | ||
7557 | return pst; | |
7558 | } | |
7559 | ||
c0ab21c2 | 7560 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7561 | |
7562 | static void | |
7563 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7564 | const gdb_byte *info_ptr, |
0018ea6f | 7565 | struct die_info *comp_unit_die, |
c0ab21c2 | 7566 | enum language pretend_language) |
0018ea6f DE |
7567 | { |
7568 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7569 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7570 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7571 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7572 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7573 | CORE_ADDR baseaddr; |
7574 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7575 | dwarf2_psymtab *pst; |
3a2b436a | 7576 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7577 | const char *filename; |
0018ea6f | 7578 | |
0018ea6f DE |
7579 | gdb_assert (! per_cu->is_debug_types); |
7580 | ||
c0ab21c2 | 7581 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7582 | |
0018ea6f | 7583 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7584 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7585 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7586 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7587 | if (filename == NULL) | |
0018ea6f | 7588 | filename = ""; |
2e927613 TV |
7589 | else if (strcmp (filename, artificial) == 0) |
7590 | { | |
7591 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7592 | sect_offset_str (per_cu->sect_off), |
7593 | (char *) NULL)); | |
2e927613 TV |
7594 | filename = debug_filename.get (); |
7595 | } | |
0018ea6f | 7596 | |
7aa104c4 | 7597 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7598 | |
7599 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7600 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7601 | |
b3b3bada | 7602 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7603 | |
7604 | dwarf2_find_base_address (comp_unit_die, cu); | |
7605 | ||
7606 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7607 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7608 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7609 | &best_highpc, cu, pst); | |
7610 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7611 | { |
7612 | CORE_ADDR low | |
7613 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7614 | - baseaddr); | |
7615 | CORE_ADDR high | |
7616 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7617 | - baseaddr - 1); | |
7618 | /* Store the contiguous range if it is not empty; it can be | |
7619 | empty for CUs with no code. */ | |
d320c2b5 TT |
7620 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7621 | low, high, pst); | |
79748972 | 7622 | } |
0018ea6f DE |
7623 | |
7624 | /* Check if comp unit has_children. | |
7625 | If so, read the rest of the partial symbols from this comp unit. | |
7626 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7627 | if (comp_unit_die->has_children) |
0018ea6f DE |
7628 | { |
7629 | struct partial_die_info *first_die; | |
7630 | CORE_ADDR lowpc, highpc; | |
7631 | ||
7632 | lowpc = ((CORE_ADDR) -1); | |
7633 | highpc = ((CORE_ADDR) 0); | |
7634 | ||
7635 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7636 | ||
7637 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7638 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7639 | |
7640 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7641 | complaints from `maint check'. */ | |
7642 | if (lowpc == ((CORE_ADDR) -1)) | |
7643 | lowpc = highpc; | |
7644 | ||
7645 | /* If the compilation unit didn't have an explicit address range, | |
7646 | then use the information extracted from its child dies. */ | |
e385593e | 7647 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7648 | { |
7649 | best_lowpc = lowpc; | |
7650 | best_highpc = highpc; | |
7651 | } | |
7652 | } | |
4ae976d1 | 7653 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7654 | best_lowpc + baseaddr) |
7655 | - baseaddr); | |
4ae976d1 | 7656 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7657 | best_highpc + baseaddr) |
7658 | - baseaddr); | |
0018ea6f | 7659 | |
ae7754b2 | 7660 | pst->end (); |
0018ea6f | 7661 | |
ae640021 | 7662 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7663 | { |
7664 | int i; | |
ae640021 | 7665 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7666 | |
7667 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7668 | post-pass. */ | |
7669 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7670 | pst->dependencies |
7671 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7672 | for (i = 0; i < len; ++i) |
7673 | { | |
7674 | pst->dependencies[i] | |
7675 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7676 | } | |
0018ea6f | 7677 | |
ae640021 | 7678 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7679 | } |
7680 | ||
7681 | /* Get the list of files included in the current compilation unit, | |
7682 | and build a psymtab for each of them. */ | |
7683 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7684 | ||
6f738b01 SM |
7685 | dwarf_read_debug_printf ("Psymtab for %s unit @%s: %s - %s" |
7686 | ", %d global, %d static syms", | |
7687 | per_cu->is_debug_types ? "type" : "comp", | |
7688 | sect_offset_str (per_cu->sect_off), | |
7689 | paddress (gdbarch, pst->text_low (objfile)), | |
7690 | paddress (gdbarch, pst->text_high (objfile)), | |
7691 | (int) pst->global_psymbols.size (), | |
7692 | (int) pst->static_psymbols.size ()); | |
0018ea6f DE |
7693 | } |
7694 | ||
7695 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7696 | Process compilation unit THIS_CU for a psymtab. */ | |
7697 | ||
7698 | static void | |
ab432490 SM |
7699 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7700 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7701 | bool want_partial_unit, |
b93601f3 | 7702 | enum language pretend_language) |
0018ea6f DE |
7703 | { |
7704 | /* If this compilation unit was already read in, free the | |
7705 | cached copy in order to read it in again. This is | |
7706 | necessary because we skipped some symbols when we first | |
7707 | read in the compilation unit (see load_partial_dies). | |
7708 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7709 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7710 | |
2e671100 | 7711 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7712 | |
58990295 TV |
7713 | switch (reader.comp_unit_die->tag) |
7714 | { | |
7715 | case DW_TAG_compile_unit: | |
7716 | this_cu->unit_type = DW_UT_compile; | |
7717 | break; | |
7718 | case DW_TAG_partial_unit: | |
7719 | this_cu->unit_type = DW_UT_partial; | |
7720 | break; | |
e77b0004 TV |
7721 | case DW_TAG_type_unit: |
7722 | this_cu->unit_type = DW_UT_type; | |
7723 | break; | |
58990295 TV |
7724 | default: |
7725 | abort (); | |
7726 | } | |
7727 | ||
c0ab21c2 | 7728 | if (reader.dummy_p) |
f1902523 | 7729 | { |
c0ab21c2 | 7730 | /* Nothing. */ |
f1902523 | 7731 | } |
c0ab21c2 | 7732 | else if (this_cu->is_debug_types) |
3e225074 TT |
7733 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7734 | reader.comp_unit_die); | |
135f5437 TT |
7735 | else if (want_partial_unit |
7736 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7737 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7738 | reader.comp_unit_die, | |
c0ab21c2 | 7739 | pretend_language); |
0018ea6f | 7740 | |
7188ed02 | 7741 | this_cu->lang = reader.cu->language; |
58990295 | 7742 | |
0018ea6f | 7743 | /* Age out any secondary CUs. */ |
7188ed02 | 7744 | per_objfile->age_comp_units (); |
0018ea6f | 7745 | } |
f4dc4d17 DE |
7746 | |
7747 | /* Reader function for build_type_psymtabs. */ | |
7748 | ||
7749 | static void | |
7750 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7751 | const gdb_byte *info_ptr, |
3e225074 | 7752 | struct die_info *type_unit_die) |
f4dc4d17 | 7753 | { |
976ca316 | 7754 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7755 | struct dwarf2_cu *cu = reader->cu; |
7756 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7757 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7758 | struct type_unit_group *tu_group; |
7759 | struct attribute *attr; | |
7760 | struct partial_die_info *first_die; | |
7761 | CORE_ADDR lowpc, highpc; | |
891813be | 7762 | dwarf2_psymtab *pst; |
f4dc4d17 | 7763 | |
0186c6a7 DE |
7764 | gdb_assert (per_cu->is_debug_types); |
7765 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7766 | |
3e225074 | 7767 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7768 | return; |
7769 | ||
052c8bb8 | 7770 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7771 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7772 | |
df07e2c7 | 7773 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7774 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7775 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7776 | |
7777 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7778 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7779 | pst->anonymous = true; |
f4dc4d17 DE |
7780 | |
7781 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7782 | ||
7783 | lowpc = (CORE_ADDR) -1; | |
7784 | highpc = (CORE_ADDR) 0; | |
7785 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7786 | ||
ae7754b2 | 7787 | pst->end (); |
f4dc4d17 DE |
7788 | } |
7789 | ||
73051182 DE |
7790 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7791 | ||
7792 | struct tu_abbrev_offset | |
7793 | { | |
b2bdb8cf SM |
7794 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7795 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7796 | {} | |
7797 | ||
7798 | signatured_type *sig_type; | |
73051182 DE |
7799 | sect_offset abbrev_offset; |
7800 | }; | |
7801 | ||
484cf504 | 7802 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7803 | |
484cf504 TT |
7804 | static bool |
7805 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7806 | const struct tu_abbrev_offset &b) | |
73051182 | 7807 | { |
484cf504 | 7808 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7809 | } |
7810 | ||
7811 | /* Efficiently read all the type units. | |
7812 | This does the bulk of the work for build_type_psymtabs. | |
7813 | ||
7814 | The efficiency is because we sort TUs by the abbrev table they use and | |
7815 | only read each abbrev table once. In one program there are 200K TUs | |
7816 | sharing 8K abbrev tables. | |
7817 | ||
7818 | The main purpose of this function is to support building the | |
5989a64e | 7819 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7820 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7821 | can collapse the search space by grouping them by stmt_list. | |
7822 | The savings can be significant, in the same program from above the 200K TUs | |
7823 | share 8K stmt_list tables. | |
7824 | ||
7825 | FUNC is expected to call get_type_unit_group, which will create the | |
7826 | struct type_unit_group if necessary and add it to | |
5989a64e | 7827 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7828 | |
7829 | static void | |
976ca316 | 7830 | build_type_psymtabs_1 (dwarf2_per_objfile *per_objfile) |
73051182 | 7831 | { |
976ca316 | 7832 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7833 | abbrev_table_up abbrev_table; |
73051182 | 7834 | sect_offset abbrev_offset; |
73051182 DE |
7835 | |
7836 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7837 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7838 | |
976ca316 | 7839 | if (per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7840 | return; |
7841 | ||
7842 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7843 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7844 | read each abbrev table in. | |
7845 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7846 | This is simpler and efficient enough for now. | |
7847 | ||
7848 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7849 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7850 | stmt_list value too so in practice this should work well. | |
7851 | ||
7852 | The basic algorithm here is: | |
7853 | ||
7854 | sort TUs by abbrev table | |
7855 | for each TU with same abbrev table: | |
7856 | read abbrev table if first user | |
7857 | read TU top level DIE | |
7858 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7859 | call FUNC */ | |
7860 | ||
6f738b01 | 7861 | dwarf_read_debug_printf ("Building type unit groups ..."); |
73051182 DE |
7862 | |
7863 | /* Sort in a separate table to maintain the order of all_type_units | |
7864 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7865 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
976ca316 | 7866 | sorted_by_abbrev.reserve (per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7867 | |
976ca316 | 7868 | for (signatured_type *sig_type : per_objfile->per_bfd->all_type_units) |
b2bdb8cf | 7869 | sorted_by_abbrev.emplace_back |
976ca316 | 7870 | (sig_type, read_abbrev_offset (per_objfile, sig_type->per_cu.section, |
b2bdb8cf | 7871 | sig_type->per_cu.sect_off)); |
73051182 | 7872 | |
484cf504 TT |
7873 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7874 | sort_tu_by_abbrev_offset); | |
73051182 | 7875 | |
9c541725 | 7876 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7877 | |
b2bdb8cf | 7878 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7879 | { |
73051182 DE |
7880 | /* Switch to the next abbrev table if necessary. */ |
7881 | if (abbrev_table == NULL | |
b2bdb8cf | 7882 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7883 | { |
b2bdb8cf | 7884 | abbrev_offset = tu.abbrev_offset; |
606decb2 | 7885 | per_objfile->per_bfd->abbrev.read (per_objfile->objfile); |
73051182 | 7886 | abbrev_table = |
606decb2 | 7887 | abbrev_table::read (&per_objfile->per_bfd->abbrev, abbrev_offset); |
73051182 DE |
7888 | ++tu_stats->nr_uniq_abbrev_tables; |
7889 | } | |
7890 | ||
976ca316 | 7891 | cutu_reader reader (&tu.sig_type->per_cu, per_objfile, |
2e671100 | 7892 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7893 | if (!reader.dummy_p) |
7894 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7895 | reader.comp_unit_die); |
73051182 | 7896 | } |
6aa5f3a6 | 7897 | } |
73051182 | 7898 | |
6aa5f3a6 DE |
7899 | /* Print collected type unit statistics. */ |
7900 | ||
7901 | static void | |
976ca316 | 7902 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7903 | { |
976ca316 | 7904 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 | 7905 | |
6f738b01 SM |
7906 | dwarf_read_debug_printf ("Type unit statistics:"); |
7907 | dwarf_read_debug_printf (" %zu TUs", | |
7908 | per_objfile->per_bfd->all_type_units.size ()); | |
7909 | dwarf_read_debug_printf (" %d uniq abbrev tables", | |
7910 | tu_stats->nr_uniq_abbrev_tables); | |
7911 | dwarf_read_debug_printf (" %d symtabs from stmt_list entries", | |
7912 | tu_stats->nr_symtabs); | |
7913 | dwarf_read_debug_printf (" %d symtab sharers", | |
7914 | tu_stats->nr_symtab_sharers); | |
7915 | dwarf_read_debug_printf (" %d type units without a stmt_list", | |
7916 | tu_stats->nr_stmt_less_type_units); | |
7917 | dwarf_read_debug_printf (" %d all_type_units reallocs", | |
7918 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7919 | } |
7920 | ||
f4dc4d17 DE |
7921 | /* Traversal function for build_type_psymtabs. */ |
7922 | ||
7923 | static int | |
7924 | build_type_psymtab_dependencies (void **slot, void *info) | |
7925 | { | |
976ca316 SM |
7926 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
7927 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 | 7928 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
094b34ac | 7929 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7930 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7931 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7932 | int i; |
7933 | ||
7934 | gdb_assert (len > 0); | |
197400e8 | 7935 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7936 | |
7937 | pst->number_of_dependencies = len; | |
a9342b62 | 7938 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7939 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7940 | { |
df07e2c7 | 7941 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7942 | gdb_assert (iter->per_cu.is_debug_types); |
7943 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7944 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7945 | } |
7946 | ||
df07e2c7 AB |
7947 | delete tu_group->tus; |
7948 | tu_group->tus = nullptr; | |
348e048f DE |
7949 | |
7950 | return 1; | |
7951 | } | |
7952 | ||
7953 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7954 | Build partial symbol tables for the .debug_types comp-units. */ | |
7955 | ||
7956 | static void | |
976ca316 | 7957 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
348e048f | 7958 | { |
976ca316 | 7959 | if (! create_all_type_units (per_objfile)) |
348e048f DE |
7960 | return; |
7961 | ||
976ca316 | 7962 | build_type_psymtabs_1 (per_objfile); |
6aa5f3a6 | 7963 | } |
f4dc4d17 | 7964 | |
6aa5f3a6 DE |
7965 | /* Traversal function for process_skeletonless_type_unit. |
7966 | Read a TU in a DWO file and build partial symbols for it. */ | |
7967 | ||
7968 | static int | |
7969 | process_skeletonless_type_unit (void **slot, void *info) | |
7970 | { | |
7971 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 7972 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
7973 | struct signatured_type find_entry, *entry; |
7974 | ||
7975 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7976 | ||
976ca316 SM |
7977 | if (per_objfile->per_bfd->signatured_types == NULL) |
7978 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7979 | |
7980 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 7981 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7982 | &find_entry, INSERT); |
6aa5f3a6 DE |
7983 | /* If we've already seen this type there's nothing to do. What's happening |
7984 | is we're doing our own version of comdat-folding here. */ | |
7985 | if (*slot != NULL) | |
7986 | return 1; | |
7987 | ||
7988 | /* This does the job that create_all_type_units would have done for | |
7989 | this TU. */ | |
976ca316 SM |
7990 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
7991 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7992 | *slot = entry; |
7993 | ||
7994 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
976ca316 | 7995 | cutu_reader reader (&entry->per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
7996 | if (!reader.dummy_p) |
7997 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7998 | reader.comp_unit_die); |
6aa5f3a6 DE |
7999 | |
8000 | return 1; | |
8001 | } | |
8002 | ||
8003 | /* Traversal function for process_skeletonless_type_units. */ | |
8004 | ||
8005 | static int | |
8006 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8007 | { | |
8008 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8009 | ||
8010 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
8011 | htab_traverse_noresize (dwo_file->tus.get (), |
8012 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
8013 | |
8014 | return 1; | |
8015 | } | |
8016 | ||
8017 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8018 | This is needed in case a TU was emitted without its skeleton. | |
8019 | Note: This can't be done until we know what all the DWO files are. */ | |
8020 | ||
8021 | static void | |
976ca316 | 8022 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
8023 | { |
8024 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
8025 | if (get_dwp_file (per_objfile) == NULL |
8026 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 8027 | { |
976ca316 | 8028 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 8029 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 8030 | per_objfile); |
6aa5f3a6 | 8031 | } |
348e048f DE |
8032 | } |
8033 | ||
ed2dc618 | 8034 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8035 | |
8036 | static void | |
976ca316 | 8037 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 8038 | { |
976ca316 | 8039 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 8040 | { |
891813be | 8041 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8042 | |
36586728 TT |
8043 | if (pst == NULL) |
8044 | continue; | |
8045 | ||
b76e467d | 8046 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8047 | { |
8048 | /* Set the 'user' field only if it is not already set. */ | |
8049 | if (pst->dependencies[j]->user == NULL) | |
8050 | pst->dependencies[j]->user = pst; | |
8051 | } | |
8052 | } | |
8053 | } | |
8054 | ||
93311388 DE |
8055 | /* Build the partial symbol table by doing a quick pass through the |
8056 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8057 | |
93311388 | 8058 | static void |
976ca316 | 8059 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 8060 | { |
976ca316 | 8061 | struct objfile *objfile = per_objfile->objfile; |
93311388 | 8062 | |
6f738b01 SM |
8063 | dwarf_read_debug_printf ("Building psymtabs of objfile %s ...", |
8064 | objfile_name (objfile)); | |
45cfd468 | 8065 | |
76935768 | 8066 | scoped_restore restore_reading_psyms |
976ca316 | 8067 | = make_scoped_restore (&per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 8068 | true); |
98bfdba5 | 8069 | |
976ca316 | 8070 | per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 8071 | |
93311388 DE |
8072 | /* Any cached compilation units will be linked by the per-objfile |
8073 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 8074 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 8075 | |
976ca316 | 8076 | build_type_psymtabs (per_objfile); |
348e048f | 8077 | |
976ca316 | 8078 | create_all_comp_units (per_objfile); |
c906108c | 8079 | |
60606b2c TT |
8080 | /* Create a temporary address map on a temporary obstack. We later |
8081 | copy this to the final obstack. */ | |
8268c778 | 8082 | auto_obstack temp_obstack; |
791afaa2 TT |
8083 | |
8084 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8085 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8086 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8087 | |
976ca316 | 8088 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
8089 | { |
8090 | if (per_cu->v.psymtab != NULL) | |
8091 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
8092 | continue; | |
976ca316 | 8093 | process_psymtab_comp_unit (per_cu, per_objfile, false, |
ab432490 | 8094 | language_minimal); |
3d5afab3 | 8095 | } |
ff013f42 | 8096 | |
6aa5f3a6 | 8097 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 8098 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
8099 | |
8100 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
976ca316 | 8101 | if (per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 8102 | { |
976ca316 SM |
8103 | htab_traverse_noresize (per_objfile->per_bfd->type_unit_groups.get (), |
8104 | build_type_psymtab_dependencies, per_objfile); | |
6aa5f3a6 DE |
8105 | } |
8106 | ||
6f738b01 | 8107 | if (dwarf_read_debug > 0) |
976ca316 | 8108 | print_tu_stats (per_objfile); |
6aa5f3a6 | 8109 | |
976ca316 | 8110 | set_partial_user (per_objfile); |
95554aad | 8111 | |
d320c2b5 TT |
8112 | objfile->partial_symtabs->psymtabs_addrmap |
8113 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8114 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8115 | /* At this point we want to keep the address map. */ |
8116 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8117 | |
6f738b01 SM |
8118 | dwarf_read_debug_printf ("Done building psymtabs of %s", |
8119 | objfile_name (objfile)); | |
ae038cb0 DJ |
8120 | } |
8121 | ||
dee91e82 DE |
8122 | /* Load the partial DIEs for a secondary CU into memory. |
8123 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8124 | |
dee91e82 | 8125 | static void |
ab432490 | 8126 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
8127 | dwarf2_per_objfile *per_objfile, |
8128 | dwarf2_cu *existing_cu) | |
dee91e82 | 8129 | { |
2e671100 | 8130 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
8131 | |
8132 | if (!reader.dummy_p) | |
8133 | { | |
8134 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8135 | language_minimal); | |
8136 | ||
8137 | /* Check if comp unit has_children. | |
8138 | If so, read the rest of the partial symbols from this comp unit. | |
8139 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8140 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8141 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8142 | |
8143 | reader.keep (); | |
c0ab21c2 | 8144 | } |
ae038cb0 DJ |
8145 | } |
8146 | ||
ae038cb0 | 8147 | static void |
976ca316 | 8148 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 8149 | struct dwarf2_section_info *section, |
f1902523 | 8150 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8151 | unsigned int is_dwz) |
ae038cb0 | 8152 | { |
d521ce57 | 8153 | const gdb_byte *info_ptr; |
976ca316 | 8154 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 8155 | |
6f738b01 SM |
8156 | dwarf_read_debug_printf ("Reading %s for %s", |
8157 | section->get_name (), | |
8158 | section->get_file_name ()); | |
bf6af496 | 8159 | |
96b79293 | 8160 | section->read (objfile); |
ae038cb0 | 8161 | |
36586728 | 8162 | info_ptr = section->buffer; |
6e70227d | 8163 | |
36586728 | 8164 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8165 | { |
ae038cb0 | 8166 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8167 | |
9c541725 | 8168 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8169 | |
f1902523 | 8170 | comp_unit_head cu_header; |
976ca316 | 8171 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 SM |
8172 | abbrev_section, info_ptr, |
8173 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8174 | |
8175 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8176 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 8177 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8178 | else |
8179 | { | |
976ca316 | 8180 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8181 | sig_type->signature = cu_header.signature; |
8182 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8183 | this_cu = &sig_type->per_cu; | |
8184 | } | |
8185 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8186 | this_cu->sect_off = sect_off; |
f1902523 | 8187 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8188 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8189 | this_cu->section = section; |
ae038cb0 | 8190 | |
976ca316 | 8191 | per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8192 | |
8193 | info_ptr = info_ptr + this_cu->length; | |
8194 | } | |
36586728 TT |
8195 | } |
8196 | ||
8197 | /* Create a list of all compilation units in OBJFILE. | |
8198 | This is only done for -readnow and building partial symtabs. */ | |
8199 | ||
8200 | static void | |
976ca316 | 8201 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 8202 | { |
976ca316 SM |
8203 | gdb_assert (per_objfile->per_bfd->all_comp_units.empty ()); |
8204 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, | |
8205 | &per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8206 | |
976ca316 | 8207 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 8208 | if (dwz != NULL) |
976ca316 | 8209 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1); |
c906108c SS |
8210 | } |
8211 | ||
5734ee8b | 8212 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8213 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8214 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8215 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8216 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8217 | |
72bf9492 DJ |
8218 | static void |
8219 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8220 | CORE_ADDR *highpc, int set_addrmap, |
8221 | struct dwarf2_cu *cu) | |
c906108c | 8222 | { |
72bf9492 | 8223 | struct partial_die_info *pdi; |
c906108c | 8224 | |
91c24f0a DC |
8225 | /* Now, march along the PDI's, descending into ones which have |
8226 | interesting children but skipping the children of the other ones, | |
8227 | until we reach the end of the compilation unit. */ | |
c906108c | 8228 | |
72bf9492 | 8229 | pdi = first_die; |
91c24f0a | 8230 | |
72bf9492 DJ |
8231 | while (pdi != NULL) |
8232 | { | |
52356b79 | 8233 | pdi->fixup (cu); |
c906108c | 8234 | |
f55ee35c | 8235 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8236 | children, so we need to look at them. Ditto for anonymous |
8237 | enums. */ | |
933c6fe4 | 8238 | |
7d00ffec | 8239 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8240 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8241 | || pdi->tag == DW_TAG_imported_unit |
8242 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8243 | { |
72bf9492 | 8244 | switch (pdi->tag) |
c906108c SS |
8245 | { |
8246 | case DW_TAG_subprogram: | |
b1dc1806 | 8247 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8248 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
8249 | if (cu->language == language_cplus) |
8250 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
8251 | set_addrmap, cu); | |
c906108c | 8252 | break; |
72929c62 | 8253 | case DW_TAG_constant: |
c906108c SS |
8254 | case DW_TAG_variable: |
8255 | case DW_TAG_typedef: | |
91c24f0a | 8256 | case DW_TAG_union_type: |
317d2668 TV |
8257 | if (!pdi->is_declaration |
8258 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8259 | { |
72bf9492 | 8260 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8261 | } |
8262 | break; | |
c906108c | 8263 | case DW_TAG_class_type: |
680b30c7 | 8264 | case DW_TAG_interface_type: |
c906108c | 8265 | case DW_TAG_structure_type: |
72bf9492 | 8266 | if (!pdi->is_declaration) |
c906108c | 8267 | { |
72bf9492 | 8268 | add_partial_symbol (pdi, cu); |
c906108c | 8269 | } |
b7fee5a3 KS |
8270 | if ((cu->language == language_rust |
8271 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8272 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8273 | set_addrmap, cu); | |
c906108c | 8274 | break; |
91c24f0a | 8275 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8276 | if (!pdi->is_declaration) |
8277 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8278 | break; |
8279 | case DW_TAG_base_type: | |
dda83cd7 | 8280 | case DW_TAG_subrange_type: |
c906108c | 8281 | /* File scope base type definitions are added to the partial |
dda83cd7 | 8282 | symbol table. */ |
72bf9492 | 8283 | add_partial_symbol (pdi, cu); |
c906108c | 8284 | break; |
d9fa45fe | 8285 | case DW_TAG_namespace: |
cdc07690 | 8286 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8287 | break; |
5d7cb8df | 8288 | case DW_TAG_module: |
59c35742 AB |
8289 | if (!pdi->is_declaration) |
8290 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8291 | break; |
95554aad TT |
8292 | case DW_TAG_imported_unit: |
8293 | { | |
8294 | struct dwarf2_per_cu_data *per_cu; | |
8295 | ||
f4dc4d17 DE |
8296 | /* For now we don't handle imported units in type units. */ |
8297 | if (cu->per_cu->is_debug_types) | |
8298 | { | |
8299 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8300 | " supported in type units [in module %s]"), | |
5e22e966 | 8301 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8302 | } |
8303 | ||
e3b94546 | 8304 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8305 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8306 | |
8307 | /* Go read the partial unit, if needed. */ | |
8308 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8309 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8310 | cu->language); | |
95554aad | 8311 | |
ae640021 | 8312 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8313 | } |
8314 | break; | |
74921315 KS |
8315 | case DW_TAG_imported_declaration: |
8316 | add_partial_symbol (pdi, cu); | |
8317 | break; | |
c906108c SS |
8318 | default: |
8319 | break; | |
8320 | } | |
8321 | } | |
8322 | ||
72bf9492 DJ |
8323 | /* If the die has a sibling, skip to the sibling. */ |
8324 | ||
8325 | pdi = pdi->die_sibling; | |
8326 | } | |
8327 | } | |
8328 | ||
8329 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8330 | |
72bf9492 | 8331 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8332 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8333 | Enumerators are an exception; they use the scope of their parent |
8334 | enumeration type, i.e. the name of the enumeration type is not | |
8335 | prepended to the enumerator. | |
91c24f0a | 8336 | |
72bf9492 DJ |
8337 | There are two complexities. One is DW_AT_specification; in this |
8338 | case "parent" means the parent of the target of the specification, | |
8339 | instead of the direct parent of the DIE. The other is compilers | |
8340 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8341 | the fully qualified name of structure types from their members' | |
8342 | linkage names. This must be done using the DIE's children rather | |
8343 | than the children of any DW_AT_specification target. We only need | |
8344 | to do this for structures at the top level, i.e. if the target of | |
8345 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8346 | have a parent. */ | |
8347 | ||
8348 | /* Compute the scope prefix associated with PDI's parent, in | |
8349 | compilation unit CU. The result will be allocated on CU's | |
8350 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8351 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8352 | static const char * |
72bf9492 DJ |
8353 | partial_die_parent_scope (struct partial_die_info *pdi, |
8354 | struct dwarf2_cu *cu) | |
8355 | { | |
15d034d0 | 8356 | const char *grandparent_scope; |
72bf9492 | 8357 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8358 | |
72bf9492 DJ |
8359 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8360 | then this means the parent of the specification DIE. */ | |
8361 | ||
8362 | real_pdi = pdi; | |
72bf9492 | 8363 | while (real_pdi->has_specification) |
fb816e8b | 8364 | { |
122cf0f2 AB |
8365 | auto res = find_partial_die (real_pdi->spec_offset, |
8366 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8367 | real_pdi = res.pdi; |
8368 | cu = res.cu; | |
8369 | } | |
72bf9492 DJ |
8370 | |
8371 | parent = real_pdi->die_parent; | |
8372 | if (parent == NULL) | |
8373 | return NULL; | |
8374 | ||
8375 | if (parent->scope_set) | |
8376 | return parent->scope; | |
8377 | ||
52356b79 | 8378 | parent->fixup (cu); |
72bf9492 | 8379 | |
10b3939b | 8380 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8381 | |
acebe513 UW |
8382 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8383 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8384 | Work around this problem here. */ | |
8385 | if (cu->language == language_cplus | |
6e70227d | 8386 | && parent->tag == DW_TAG_namespace |
7d00ffec | 8387 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
8388 | && grandparent_scope == NULL) |
8389 | { | |
8390 | parent->scope = NULL; | |
8391 | parent->scope_set = 1; | |
8392 | return NULL; | |
8393 | } | |
8394 | ||
0a4b0913 | 8395 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8396 | if (pdi->tag == DW_TAG_enumerator) |
8397 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8398 | parent->scope = grandparent_scope; | |
8399 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8400 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8401 | || parent->tag == DW_TAG_structure_type |
8402 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8403 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8404 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8405 | || parent->tag == DW_TAG_enumeration_type |
8406 | || (cu->language == language_fortran | |
8407 | && parent->tag == DW_TAG_subprogram | |
8408 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8409 | { |
8410 | if (grandparent_scope == NULL) | |
7d00ffec | 8411 | parent->scope = parent->name (cu); |
72bf9492 | 8412 | else |
3e43a32a MS |
8413 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8414 | grandparent_scope, | |
7d00ffec | 8415 | parent->name (cu), 0, cu); |
72bf9492 | 8416 | } |
72bf9492 DJ |
8417 | else |
8418 | { | |
8419 | /* FIXME drow/2004-04-01: What should we be doing with | |
8420 | function-local names? For partial symbols, we should probably be | |
8421 | ignoring them. */ | |
fa9c3fa0 TT |
8422 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8423 | dwarf_tag_name (parent->tag), | |
8424 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8425 | parent->scope = grandparent_scope; |
c906108c SS |
8426 | } |
8427 | ||
72bf9492 DJ |
8428 | parent->scope_set = 1; |
8429 | return parent->scope; | |
8430 | } | |
8431 | ||
8432 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8433 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8434 | |
43816ebc | 8435 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8436 | partial_die_full_name (struct partial_die_info *pdi, |
8437 | struct dwarf2_cu *cu) | |
8438 | { | |
15d034d0 | 8439 | const char *parent_scope; |
72bf9492 | 8440 | |
98bfdba5 PA |
8441 | /* If this is a template instantiation, we can not work out the |
8442 | template arguments from partial DIEs. So, unfortunately, we have | |
8443 | to go through the full DIEs. At least any work we do building | |
8444 | types here will be reused if full symbols are loaded later. */ | |
8445 | if (pdi->has_template_arguments) | |
8446 | { | |
52356b79 | 8447 | pdi->fixup (cu); |
98bfdba5 | 8448 | |
7d00ffec | 8449 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8450 | { |
8451 | struct die_info *die; | |
8452 | struct attribute attr; | |
8453 | struct dwarf2_cu *ref_cu = cu; | |
8454 | ||
b64f50a1 | 8455 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8456 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8457 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8458 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8459 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8460 | ||
43816ebc | 8461 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8462 | } |
8463 | } | |
8464 | ||
72bf9492 DJ |
8465 | parent_scope = partial_die_parent_scope (pdi, cu); |
8466 | if (parent_scope == NULL) | |
8467 | return NULL; | |
8468 | else | |
43816ebc | 8469 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8470 | pdi->name (cu), |
8471 | 0, cu)); | |
c906108c SS |
8472 | } |
8473 | ||
8474 | static void | |
72bf9492 | 8475 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8476 | { |
976ca316 SM |
8477 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8478 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8479 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8480 | CORE_ADDR addr = 0; |
15d034d0 | 8481 | const char *actual_name = NULL; |
e142c38c DJ |
8482 | CORE_ADDR baseaddr; |
8483 | ||
b3b3bada | 8484 | baseaddr = objfile->text_section_offset (); |
c906108c | 8485 | |
43816ebc TT |
8486 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8487 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8488 | if (built_actual_name != NULL) |
43816ebc | 8489 | actual_name = built_actual_name.get (); |
63d06c5c | 8490 | |
72bf9492 | 8491 | if (actual_name == NULL) |
7d00ffec | 8492 | actual_name = pdi->name (cu); |
72bf9492 | 8493 | |
76e288d1 TT |
8494 | partial_symbol psymbol; |
8495 | memset (&psymbol, 0, sizeof (psymbol)); | |
8496 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
a52d653e | 8497 | psymbol.ginfo.set_section_index (-1); |
76e288d1 TT |
8498 | |
8499 | /* The code below indicates that the psymbol should be installed by | |
8500 | setting this. */ | |
8501 | gdb::optional<psymbol_placement> where; | |
8502 | ||
c906108c SS |
8503 | switch (pdi->tag) |
8504 | { | |
b1dc1806 | 8505 | case DW_TAG_inlined_subroutine: |
c906108c | 8506 | case DW_TAG_subprogram: |
79748972 TT |
8507 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8508 | - baseaddr); | |
0a4b0913 AB |
8509 | if (pdi->is_external |
8510 | || cu->language == language_ada | |
8511 | || (cu->language == language_fortran | |
8512 | && pdi->die_parent != NULL | |
8513 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8514 | { | |
dda83cd7 SM |
8515 | /* Normally, only "external" DIEs are part of the global scope. |
8516 | But in Ada and Fortran, we want to be able to access nested | |
8517 | procedures globally. So all Ada and Fortran subprograms are | |
8518 | stored in the global scope. */ | |
76e288d1 | 8519 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8520 | } |
8521 | else | |
76e288d1 TT |
8522 | where = psymbol_placement::STATIC; |
8523 | ||
8524 | psymbol.domain = VAR_DOMAIN; | |
8525 | psymbol.aclass = LOC_BLOCK; | |
a52d653e | 8526 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 | 8527 | psymbol.ginfo.value.address = addr; |
0c1b455e TT |
8528 | |
8529 | if (pdi->main_subprogram && actual_name != NULL) | |
8530 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8531 | break; |
72929c62 | 8532 | case DW_TAG_constant: |
76e288d1 TT |
8533 | psymbol.domain = VAR_DOMAIN; |
8534 | psymbol.aclass = LOC_STATIC; | |
8535 | where = (pdi->is_external | |
8536 | ? psymbol_placement::GLOBAL | |
8537 | : psymbol_placement::STATIC); | |
72929c62 | 8538 | break; |
c906108c | 8539 | case DW_TAG_variable: |
95554aad TT |
8540 | if (pdi->d.locdesc) |
8541 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8542 | |
95554aad | 8543 | if (pdi->d.locdesc |
caac4577 | 8544 | && addr == 0 |
976ca316 | 8545 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8546 | { |
8547 | /* A global or static variable may also have been stripped | |
8548 | out by the linker if unused, in which case its address | |
8549 | will be nullified; do not add such variables into partial | |
8550 | symbol table then. */ | |
8551 | } | |
8552 | else if (pdi->is_external) | |
c906108c SS |
8553 | { |
8554 | /* Global Variable. | |
8555 | Don't enter into the minimal symbol tables as there is | |
8556 | a minimal symbol table entry from the ELF symbols already. | |
8557 | Enter into partial symbol table if it has a location | |
8558 | descriptor or a type. | |
8559 | If the location descriptor is missing, new_symbol will create | |
8560 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8561 | be determined from the minimal symbol table whenever the variable | |
8562 | is referenced. | |
8563 | The address for the partial symbol table entry is not | |
8564 | used by GDB, but it comes in handy for debugging partial symbol | |
8565 | table building. */ | |
8566 | ||
95554aad | 8567 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8568 | { |
8569 | psymbol.domain = VAR_DOMAIN; | |
8570 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8571 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8572 | psymbol.ginfo.value.address = addr; |
8573 | where = psymbol_placement::GLOBAL; | |
8574 | } | |
c906108c SS |
8575 | } |
8576 | else | |
8577 | { | |
ff908ebf AW |
8578 | int has_loc = pdi->d.locdesc != NULL; |
8579 | ||
8580 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8581 | without location descriptors or constant values). */ | |
8582 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8583 | return; |
ff908ebf | 8584 | |
76e288d1 TT |
8585 | psymbol.domain = VAR_DOMAIN; |
8586 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8587 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8588 | if (has_loc) |
8589 | psymbol.ginfo.value.address = addr; | |
8590 | where = psymbol_placement::STATIC; | |
c906108c SS |
8591 | } |
8592 | break; | |
d8f62e84 | 8593 | case DW_TAG_array_type: |
c906108c SS |
8594 | case DW_TAG_typedef: |
8595 | case DW_TAG_base_type: | |
a02abb62 | 8596 | case DW_TAG_subrange_type: |
76e288d1 TT |
8597 | psymbol.domain = VAR_DOMAIN; |
8598 | psymbol.aclass = LOC_TYPEDEF; | |
8599 | where = psymbol_placement::STATIC; | |
c906108c | 8600 | break; |
74921315 | 8601 | case DW_TAG_imported_declaration: |
72bf9492 | 8602 | case DW_TAG_namespace: |
76e288d1 TT |
8603 | psymbol.domain = VAR_DOMAIN; |
8604 | psymbol.aclass = LOC_TYPEDEF; | |
8605 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8606 | break; |
530e8392 | 8607 | case DW_TAG_module: |
a5fd13a9 | 8608 | /* With Fortran 77 there might be a "BLOCK DATA" module |
dda83cd7 SM |
8609 | available without any name. If so, we skip the module as it |
8610 | doesn't bring any value. */ | |
a5fd13a9 | 8611 | if (actual_name != nullptr) |
76e288d1 TT |
8612 | { |
8613 | psymbol.domain = MODULE_DOMAIN; | |
8614 | psymbol.aclass = LOC_TYPEDEF; | |
8615 | where = psymbol_placement::GLOBAL; | |
8616 | } | |
530e8392 | 8617 | break; |
c906108c | 8618 | case DW_TAG_class_type: |
680b30c7 | 8619 | case DW_TAG_interface_type: |
c906108c SS |
8620 | case DW_TAG_structure_type: |
8621 | case DW_TAG_union_type: | |
8622 | case DW_TAG_enumeration_type: | |
fa4028e9 | 8623 | /* Skip external references. The DWARF standard says in the section |
dda83cd7 SM |
8624 | about "Structure, Union, and Class Type Entries": "An incomplete |
8625 | structure, union or class type is represented by a structure, | |
8626 | union or class entry that does not have a byte size attribute | |
8627 | and that has a DW_AT_declaration attribute." */ | |
fa4028e9 | 8628 | if (!pdi->has_byte_size && pdi->is_declaration) |
43816ebc | 8629 | return; |
fa4028e9 | 8630 | |
63d06c5c DC |
8631 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8632 | static vs. global. */ | |
76e288d1 TT |
8633 | psymbol.domain = STRUCT_DOMAIN; |
8634 | psymbol.aclass = LOC_TYPEDEF; | |
8635 | where = (cu->language == language_cplus | |
8636 | ? psymbol_placement::GLOBAL | |
8637 | : psymbol_placement::STATIC); | |
c906108c SS |
8638 | break; |
8639 | case DW_TAG_enumerator: | |
76e288d1 TT |
8640 | psymbol.domain = VAR_DOMAIN; |
8641 | psymbol.aclass = LOC_CONST; | |
8642 | where = (cu->language == language_cplus | |
8643 | ? psymbol_placement::GLOBAL | |
8644 | : psymbol_placement::STATIC); | |
c906108c SS |
8645 | break; |
8646 | default: | |
8647 | break; | |
8648 | } | |
76e288d1 TT |
8649 | |
8650 | if (where.has_value ()) | |
8651 | { | |
f049a313 TT |
8652 | if (built_actual_name != nullptr) |
8653 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8654 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8655 | psymbol.ginfo.set_linkage_name (actual_name); | |
8656 | else | |
8657 | { | |
8658 | psymbol.ginfo.set_demangled_name (actual_name, | |
8659 | &objfile->objfile_obstack); | |
8660 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8661 | } | |
932539d7 | 8662 | cu->per_cu->v.psymtab->add_psymbol (psymbol, *where, objfile); |
76e288d1 | 8663 | } |
c906108c SS |
8664 | } |
8665 | ||
5c4e30ca DC |
8666 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8667 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8668 | the name of the enclosing namespace. */ | |
91c24f0a | 8669 | |
72bf9492 DJ |
8670 | static void |
8671 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8672 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8673 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8674 | { |
72bf9492 | 8675 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8676 | |
72bf9492 | 8677 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8678 | |
8679 | /* Now scan partial symbols in that namespace. */ | |
8680 | ||
91c24f0a | 8681 | if (pdi->has_children) |
cdc07690 | 8682 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8683 | } |
8684 | ||
5d7cb8df JK |
8685 | /* Read a partial die corresponding to a Fortran module. */ |
8686 | ||
8687 | static void | |
8688 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8689 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8690 | { |
530e8392 KB |
8691 | /* Add a symbol for the namespace. */ |
8692 | ||
8693 | add_partial_symbol (pdi, cu); | |
8694 | ||
f55ee35c | 8695 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8696 | |
8697 | if (pdi->has_children) | |
cdc07690 | 8698 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8699 | } |
8700 | ||
b1dc1806 XR |
8701 | /* Read a partial die corresponding to a subprogram or an inlined |
8702 | subprogram and create a partial symbol for that subprogram. | |
8703 | When the CU language allows it, this routine also defines a partial | |
8704 | symbol for each nested subprogram that this subprogram contains. | |
8705 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8706 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8707 | |
cdc07690 YQ |
8708 | PDI may also be a lexical block, in which case we simply search |
8709 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8710 | Again, this is only performed when the CU language allows this |
8711 | type of definitions. */ | |
8712 | ||
8713 | static void | |
8714 | add_partial_subprogram (struct partial_die_info *pdi, | |
8715 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8716 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8717 | { |
b1dc1806 | 8718 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8719 | { |
8720 | if (pdi->has_pc_info) | |
dda83cd7 SM |
8721 | { |
8722 | if (pdi->lowpc < *lowpc) | |
8723 | *lowpc = pdi->lowpc; | |
8724 | if (pdi->highpc > *highpc) | |
8725 | *highpc = pdi->highpc; | |
cdc07690 | 8726 | if (set_addrmap) |
5734ee8b | 8727 | { |
5e22e966 | 8728 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8729 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8730 | CORE_ADDR baseaddr; |
b926417a TT |
8731 | CORE_ADDR this_highpc; |
8732 | CORE_ADDR this_lowpc; | |
5734ee8b | 8733 | |
b3b3bada | 8734 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8735 | this_lowpc |
8736 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8737 | pdi->lowpc + baseaddr) | |
8738 | - baseaddr); | |
8739 | this_highpc | |
8740 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8741 | pdi->highpc + baseaddr) | |
8742 | - baseaddr); | |
d320c2b5 | 8743 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8744 | this_lowpc, this_highpc - 1, |
9291a0cd | 8745 | cu->per_cu->v.psymtab); |
5734ee8b | 8746 | } |
dda83cd7 | 8747 | } |
481860b3 GB |
8748 | |
8749 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8750 | { | |
dda83cd7 | 8751 | if (!pdi->is_declaration) |
e8d05480 JB |
8752 | /* Ignore subprogram DIEs that do not have a name, they are |
8753 | illegal. Do not emit a complaint at this point, we will | |
8754 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8755 | if (pdi->name (cu)) |
e8d05480 | 8756 | add_partial_symbol (pdi, cu); |
dda83cd7 | 8757 | } |
bc30ff58 | 8758 | } |
6e70227d | 8759 | |
bc30ff58 JB |
8760 | if (! pdi->has_children) |
8761 | return; | |
8762 | ||
0a4b0913 | 8763 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8764 | { |
8765 | pdi = pdi->die_child; | |
8766 | while (pdi != NULL) | |
8767 | { | |
52356b79 | 8768 | pdi->fixup (cu); |
bc30ff58 | 8769 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8770 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8771 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8772 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8773 | pdi = pdi->die_sibling; |
8774 | } | |
8775 | } | |
8776 | } | |
8777 | ||
91c24f0a DC |
8778 | /* Read a partial die corresponding to an enumeration type. */ |
8779 | ||
72bf9492 DJ |
8780 | static void |
8781 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8782 | struct dwarf2_cu *cu) | |
91c24f0a | 8783 | { |
72bf9492 | 8784 | struct partial_die_info *pdi; |
91c24f0a | 8785 | |
7d00ffec | 8786 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8787 | add_partial_symbol (enum_pdi, cu); |
8788 | ||
8789 | pdi = enum_pdi->die_child; | |
8790 | while (pdi) | |
91c24f0a | 8791 | { |
7d00ffec | 8792 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8793 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8794 | else |
72bf9492 DJ |
8795 | add_partial_symbol (pdi, cu); |
8796 | pdi = pdi->die_sibling; | |
91c24f0a | 8797 | } |
91c24f0a DC |
8798 | } |
8799 | ||
6caca83c CC |
8800 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8801 | ||
8802 | static unsigned int | |
d521ce57 | 8803 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8804 | { |
8805 | unsigned int bytes_read; | |
8806 | ||
8807 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8808 | } | |
8809 | ||
685af9cd TT |
8810 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8811 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8812 | ||
4bb7a0a7 DJ |
8813 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8814 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8815 | the initial number. */ | |
8816 | ||
7c32eebb | 8817 | static const struct abbrev_info * |
685af9cd TT |
8818 | peek_die_abbrev (const die_reader_specs &reader, |
8819 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8820 | { |
685af9cd | 8821 | dwarf2_cu *cu = reader.cu; |
0280fdcc | 8822 | bfd *abfd = reader.abfd; |
685af9cd TT |
8823 | unsigned int abbrev_number |
8824 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8825 | |
8826 | if (abbrev_number == 0) | |
8827 | return NULL; | |
8828 | ||
7c32eebb TT |
8829 | const abbrev_info *abbrev |
8830 | = reader.abbrev_table->lookup_abbrev (abbrev_number); | |
4bb7a0a7 DJ |
8831 | if (!abbrev) |
8832 | { | |
422b9917 | 8833 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8834 | " at offset %s [in module %s]"), |
422b9917 | 8835 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8836 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8837 | } |
8838 | ||
8839 | return abbrev; | |
8840 | } | |
8841 | ||
93311388 DE |
8842 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8843 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8844 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8845 | ||
d521ce57 TT |
8846 | static const gdb_byte * |
8847 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8848 | { |
4bb7a0a7 DJ |
8849 | while (1) |
8850 | { | |
685af9cd | 8851 | unsigned int bytes_read; |
7c32eebb TT |
8852 | const abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, |
8853 | &bytes_read); | |
685af9cd | 8854 | |
4bb7a0a7 DJ |
8855 | if (abbrev == NULL) |
8856 | return info_ptr + bytes_read; | |
8857 | else | |
dee91e82 | 8858 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8859 | } |
8860 | } | |
8861 | ||
93311388 DE |
8862 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8863 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8864 | abbrev corresponding to that skipped uleb128 should be passed in |
8865 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8866 | children. */ | |
8867 | ||
d521ce57 TT |
8868 | static const gdb_byte * |
8869 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
7c32eebb | 8870 | const struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8871 | { |
8872 | unsigned int bytes_read; | |
8873 | struct attribute attr; | |
dee91e82 DE |
8874 | bfd *abfd = reader->abfd; |
8875 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8876 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8877 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8878 | unsigned int form, i; |
8879 | ||
8880 | for (i = 0; i < abbrev->num_attrs; i++) | |
8881 | { | |
8882 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8883 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8884 | { | |
7a5f294d | 8885 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 8886 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8887 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8888 | else |
b9502d3f | 8889 | { |
0826b30a | 8890 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8891 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8892 | |
8893 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8894 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8895 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8896 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8897 | else |
8898 | return sibling_ptr; | |
8899 | } | |
4bb7a0a7 DJ |
8900 | } |
8901 | ||
8902 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8903 | form = abbrev->attrs[i].form; | |
8904 | skip_attribute: | |
8905 | switch (form) | |
8906 | { | |
4bb7a0a7 | 8907 | case DW_FORM_ref_addr: |
ae411497 TT |
8908 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8909 | and later it is offset sized. */ | |
8910 | if (cu->header.version == 2) | |
8911 | info_ptr += cu->header.addr_size; | |
8912 | else | |
8913 | info_ptr += cu->header.offset_size; | |
8914 | break; | |
36586728 TT |
8915 | case DW_FORM_GNU_ref_alt: |
8916 | info_ptr += cu->header.offset_size; | |
8917 | break; | |
ae411497 | 8918 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8919 | info_ptr += cu->header.addr_size; |
8920 | break; | |
8921 | case DW_FORM_data1: | |
8922 | case DW_FORM_ref1: | |
8923 | case DW_FORM_flag: | |
8fe0f950 | 8924 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8925 | info_ptr += 1; |
8926 | break; | |
2dc7f7b3 | 8927 | case DW_FORM_flag_present: |
43988095 | 8928 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8929 | break; |
4bb7a0a7 DJ |
8930 | case DW_FORM_data2: |
8931 | case DW_FORM_ref2: | |
8fe0f950 | 8932 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8933 | info_ptr += 2; |
8934 | break; | |
8fe0f950 AT |
8935 | case DW_FORM_strx3: |
8936 | info_ptr += 3; | |
8937 | break; | |
4bb7a0a7 DJ |
8938 | case DW_FORM_data4: |
8939 | case DW_FORM_ref4: | |
8fe0f950 | 8940 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8941 | info_ptr += 4; |
8942 | break; | |
8943 | case DW_FORM_data8: | |
8944 | case DW_FORM_ref8: | |
55f1336d | 8945 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8946 | info_ptr += 8; |
8947 | break; | |
0224619f JK |
8948 | case DW_FORM_data16: |
8949 | info_ptr += 16; | |
8950 | break; | |
4bb7a0a7 | 8951 | case DW_FORM_string: |
9b1c24c8 | 8952 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8953 | info_ptr += bytes_read; |
8954 | break; | |
2dc7f7b3 | 8955 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8956 | case DW_FORM_strp: |
36586728 | 8957 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8958 | info_ptr += cu->header.offset_size; |
8959 | break; | |
2dc7f7b3 | 8960 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8961 | case DW_FORM_block: |
8962 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8963 | info_ptr += bytes_read; | |
8964 | break; | |
8965 | case DW_FORM_block1: | |
8966 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8967 | break; | |
8968 | case DW_FORM_block2: | |
8969 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8970 | break; | |
8971 | case DW_FORM_block4: | |
8972 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8973 | break; | |
336d760d | 8974 | case DW_FORM_addrx: |
cf532bd1 | 8975 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8976 | case DW_FORM_sdata: |
8977 | case DW_FORM_udata: | |
8978 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8979 | case DW_FORM_GNU_addr_index: |
8980 | case DW_FORM_GNU_str_index: | |
18a8505e | 8981 | case DW_FORM_rnglistx: |
41144253 | 8982 | case DW_FORM_loclistx: |
d521ce57 | 8983 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8984 | break; |
8985 | case DW_FORM_indirect: | |
8986 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8987 | info_ptr += bytes_read; | |
8988 | /* We need to continue parsing from here, so just go back to | |
8989 | the top. */ | |
8990 | goto skip_attribute; | |
8991 | ||
8992 | default: | |
3e43a32a MS |
8993 | error (_("Dwarf Error: Cannot handle %s " |
8994 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8995 | dwarf_form_name (form), |
8996 | bfd_get_filename (abfd)); | |
8997 | } | |
8998 | } | |
8999 | ||
9000 | if (abbrev->has_children) | |
dee91e82 | 9001 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9002 | else |
9003 | return info_ptr; | |
9004 | } | |
9005 | ||
93311388 | 9006 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9007 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9008 | |
d521ce57 | 9009 | static const gdb_byte * |
dee91e82 DE |
9010 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9011 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9012 | const gdb_byte *info_ptr) |
91c24f0a DC |
9013 | { |
9014 | /* Do we know the sibling already? */ | |
72bf9492 | 9015 | |
91c24f0a DC |
9016 | if (orig_pdi->sibling) |
9017 | return orig_pdi->sibling; | |
9018 | ||
9019 | /* Are there any children to deal with? */ | |
9020 | ||
9021 | if (!orig_pdi->has_children) | |
9022 | return info_ptr; | |
9023 | ||
4bb7a0a7 | 9024 | /* Skip the children the long way. */ |
91c24f0a | 9025 | |
dee91e82 | 9026 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9027 | } |
9028 | ||
257e7a09 | 9029 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9030 | not NULL. */ |
c906108c | 9031 | |
891813be TT |
9032 | void |
9033 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9034 | { |
976ca316 | 9035 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 9036 | |
976ca316 | 9037 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 9038 | |
077cbab2 TT |
9039 | /* If this psymtab is constructed from a debug-only objfile, the |
9040 | has_section_at_zero flag will not necessarily be correct. We | |
9041 | can get the correct value for this flag by looking at the data | |
9042 | associated with the (presumably stripped) associated objfile. */ | |
9043 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9044 | { |
976ca316 | 9045 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 9046 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 9047 | |
976ca316 SM |
9048 | per_objfile->per_bfd->has_section_at_zero |
9049 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 9050 | } |
98bfdba5 | 9051 | |
8566b89b | 9052 | expand_psymtab (objfile); |
95554aad | 9053 | |
976ca316 | 9054 | process_cu_includes (per_objfile); |
c906108c | 9055 | } |
9cdd5dbd DE |
9056 | \f |
9057 | /* Reading in full CUs. */ | |
c906108c | 9058 | |
10b3939b DJ |
9059 | /* Add PER_CU to the queue. */ |
9060 | ||
9061 | static void | |
120ce1b5 SM |
9062 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
9063 | dwarf2_per_objfile *per_objfile, | |
95554aad | 9064 | enum language pretend_language) |
10b3939b | 9065 | { |
10b3939b | 9066 | per_cu->queued = 1; |
08ac5771 SM |
9067 | |
9068 | gdb_assert (per_objfile->per_bfd->queue.has_value ()); | |
9069 | per_cu->per_bfd->queue->emplace (per_cu, per_objfile, pretend_language); | |
10b3939b DJ |
9070 | } |
9071 | ||
616c069a SM |
9072 | /* If PER_CU is not yet expanded of queued for expansion, add it to the queue. |
9073 | ||
89e63ee4 DE |
9074 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a |
9075 | dependency. | |
69d751e3 | 9076 | |
616c069a SM |
9077 | Return true if maybe_queue_comp_unit requires the caller to load the CU's |
9078 | DIEs, false otherwise. | |
9079 | ||
9080 | Explanation: there is an invariant that if a CU is queued for expansion | |
9081 | (present in `dwarf2_per_bfd::queue`), then its DIEs are loaded | |
9082 | (a dwarf2_cu object exists for this CU, and `dwarf2_per_objfile::get_cu` | |
9083 | returns non-nullptr). If the CU gets enqueued by this function but its DIEs | |
9084 | are not yet loaded, the the caller must load the CU's DIEs to ensure the | |
9085 | invariant is respected. | |
9086 | ||
9087 | The caller is therefore not required to load the CU's DIEs (we return false) | |
9088 | if: | |
9089 | ||
9090 | - the CU is already expanded, and therefore does not get enqueued | |
9091 | - the CU gets enqueued for expansion, but its DIEs are already loaded | |
9092 | ||
9093 | Note that the caller should not use this function's return value as an | |
9094 | indicator of whether the CU's DIEs are loaded right now, it should check | |
9095 | that by calling `dwarf2_per_objfile::get_cu` instead. */ | |
0907af0c DE |
9096 | |
9097 | static int | |
89e63ee4 | 9098 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
9099 | dwarf2_per_cu_data *per_cu, |
9100 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
9101 | enum language pretend_language) |
9102 | { | |
9103 | /* We may arrive here during partial symbol reading, if we need full | |
9104 | DIEs to process an unusual case (e.g. template arguments). Do | |
9105 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 9106 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 9107 | { |
7188ed02 SM |
9108 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9109 | ||
9110 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
9111 | return 1; |
9112 | return 0; | |
9113 | } | |
9114 | ||
9115 | /* Mark the dependence relation so that we don't flush PER_CU | |
9116 | too early. */ | |
89e63ee4 DE |
9117 | if (dependent_cu != NULL) |
9118 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9119 | |
9120 | /* If it's already on the queue, we have nothing to do. */ | |
9121 | if (per_cu->queued) | |
de53369b SM |
9122 | { |
9123 | /* Verify the invariant that if a CU is queued for expansion, its DIEs are | |
9124 | loaded. */ | |
9125 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); | |
616c069a SM |
9126 | |
9127 | /* If the CU is queued for expansion, it should not already be | |
9128 | expanded. */ | |
9129 | gdb_assert (!per_objfile->symtab_set_p (per_cu)); | |
9130 | ||
9131 | /* The DIEs are already loaded, the caller doesn't need to do it. */ | |
de53369b SM |
9132 | return 0; |
9133 | } | |
0907af0c | 9134 | |
616c069a SM |
9135 | bool queued = false; |
9136 | if (!per_objfile->symtab_set_p (per_cu)) | |
9137 | { | |
9138 | /* Add it to the queue. */ | |
9139 | queue_comp_unit (per_cu, per_objfile, pretend_language); | |
9140 | queued = true; | |
9141 | } | |
9142 | ||
0907af0c DE |
9143 | /* If the compilation unit is already loaded, just mark it as |
9144 | used. */ | |
7188ed02 SM |
9145 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9146 | if (cu != nullptr) | |
616c069a | 9147 | cu->last_used = 0; |
0907af0c | 9148 | |
616c069a SM |
9149 | /* Ask the caller to load the CU's DIEs if the CU got enqueued for expansion |
9150 | and the DIEs are not already loaded. */ | |
9151 | return queued && cu == nullptr; | |
0907af0c DE |
9152 | } |
9153 | ||
10b3939b DJ |
9154 | /* Process the queue. */ |
9155 | ||
9156 | static void | |
976ca316 | 9157 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 9158 | { |
6f738b01 SM |
9159 | dwarf_read_debug_printf ("Expanding one or more symtabs of objfile %s ...", |
9160 | objfile_name (per_objfile->objfile)); | |
45cfd468 | 9161 | |
03dd20cc DJ |
9162 | /* The queue starts out with one item, but following a DIE reference |
9163 | may load a new CU, adding it to the end of the queue. */ | |
08ac5771 | 9164 | while (!per_objfile->per_bfd->queue->empty ()) |
10b3939b | 9165 | { |
08ac5771 | 9166 | dwarf2_queue_item &item = per_objfile->per_bfd->queue->front (); |
7188ed02 | 9167 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 9168 | |
976ca316 | 9169 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 9170 | { |
976ca316 | 9171 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 9172 | |
7188ed02 SM |
9173 | /* Skip dummy CUs. */ |
9174 | if (cu != nullptr) | |
73be47f5 | 9175 | { |
7188ed02 SM |
9176 | unsigned int debug_print_threshold; |
9177 | char buf[100]; | |
9178 | ||
9179 | if (per_cu->is_debug_types) | |
9180 | { | |
9181 | struct signatured_type *sig_type = | |
9182 | (struct signatured_type *) per_cu; | |
9183 | ||
9184 | sprintf (buf, "TU %s at offset %s", | |
9185 | hex_string (sig_type->signature), | |
9186 | sect_offset_str (per_cu->sect_off)); | |
9187 | /* There can be 100s of TUs. | |
9188 | Only print them in verbose mode. */ | |
9189 | debug_print_threshold = 2; | |
9190 | } | |
9191 | else | |
9192 | { | |
9193 | sprintf (buf, "CU at offset %s", | |
9194 | sect_offset_str (per_cu->sect_off)); | |
9195 | debug_print_threshold = 1; | |
9196 | } | |
247f5c4f | 9197 | |
7188ed02 | 9198 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9199 | dwarf_read_debug_printf ("Expanding symtab of %s", buf); |
f4dc4d17 | 9200 | |
7188ed02 SM |
9201 | if (per_cu->is_debug_types) |
9202 | process_full_type_unit (cu, item.pretend_language); | |
9203 | else | |
9204 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9205 | |
7188ed02 | 9206 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9207 | dwarf_read_debug_printf ("Done expanding %s", buf); |
7188ed02 | 9208 | } |
f4dc4d17 | 9209 | } |
10b3939b | 9210 | |
7188ed02 | 9211 | per_cu->queued = 0; |
08ac5771 | 9212 | per_objfile->per_bfd->queue->pop (); |
10b3939b DJ |
9213 | } |
9214 | ||
6f738b01 SM |
9215 | dwarf_read_debug_printf ("Done expanding symtabs of %s.", |
9216 | objfile_name (per_objfile->objfile)); | |
10b3939b DJ |
9217 | } |
9218 | ||
10b3939b DJ |
9219 | /* Read in full symbols for PST, and anything it depends on. */ |
9220 | ||
8566b89b TT |
9221 | void |
9222 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9223 | { |
af758d11 | 9224 | gdb_assert (!readin_p (objfile)); |
95554aad | 9225 | |
17ee85fc TT |
9226 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9227 | free_cached_comp_units freer (per_objfile); | |
48993951 | 9228 | expand_dependencies (objfile); |
aaa75496 | 9229 | |
97a1449a | 9230 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 9231 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9232 | } |
9233 | ||
af758d11 SM |
9234 | /* See psympriv.h. */ |
9235 | ||
9236 | bool | |
9237 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9238 | { | |
9239 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9240 | return per_objfile->symtab_set_p (per_cu_data); | |
9241 | } | |
9242 | ||
9243 | /* See psympriv.h. */ | |
9244 | ||
9245 | compunit_symtab * | |
9246 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9247 | { | |
9248 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9249 | return per_objfile->get_symtab (per_cu_data); | |
9250 | } | |
9251 | ||
dee91e82 DE |
9252 | /* Trivial hash function for die_info: the hash value of a DIE |
9253 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9254 | |
dee91e82 DE |
9255 | static hashval_t |
9256 | die_hash (const void *item) | |
10b3939b | 9257 | { |
9a3c8263 | 9258 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9259 | |
9c541725 | 9260 | return to_underlying (die->sect_off); |
dee91e82 | 9261 | } |
63d06c5c | 9262 | |
dee91e82 DE |
9263 | /* Trivial comparison function for die_info structures: two DIEs |
9264 | are equal if they have the same offset. */ | |
98bfdba5 | 9265 | |
dee91e82 DE |
9266 | static int |
9267 | die_eq (const void *item_lhs, const void *item_rhs) | |
9268 | { | |
9a3c8263 SM |
9269 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9270 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9271 | |
9c541725 | 9272 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9273 | } |
c906108c | 9274 | |
4a636814 SM |
9275 | /* Load the DIEs associated with PER_CU into memory. |
9276 | ||
9277 | In some cases, the caller, while reading partial symbols, will need to load | |
9278 | the full symbols for the CU for some reason. It will already have a | |
9279 | dwarf2_cu object for THIS_CU and pass it as EXISTING_CU, so it can be re-used | |
9280 | rather than creating a new one. */ | |
c906108c | 9281 | |
dee91e82 | 9282 | static void |
ab432490 SM |
9283 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9284 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 9285 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
9286 | bool skip_partial, |
9287 | enum language pretend_language) | |
dee91e82 | 9288 | { |
c0ab21c2 TT |
9289 | gdb_assert (! this_cu->is_debug_types); |
9290 | ||
7188ed02 | 9291 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); |
c0ab21c2 TT |
9292 | if (reader.dummy_p) |
9293 | return; | |
9294 | ||
9295 | struct dwarf2_cu *cu = reader.cu; | |
9296 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9297 | |
dee91e82 DE |
9298 | gdb_assert (cu->die_hash == NULL); |
9299 | cu->die_hash = | |
9300 | htab_create_alloc_ex (cu->header.length / 12, | |
9301 | die_hash, | |
9302 | die_eq, | |
9303 | NULL, | |
9304 | &cu->comp_unit_obstack, | |
9305 | hashtab_obstack_allocate, | |
9306 | dummy_obstack_deallocate); | |
e142c38c | 9307 | |
3e225074 | 9308 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9309 | reader.comp_unit_die->child |
9310 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9311 | &info_ptr, reader.comp_unit_die); | |
9312 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9313 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9314 | |
9315 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9316 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9317 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9318 | or we won't be able to build types correctly. |
9319 | Similarly, if we do not read the producer, we can not apply | |
9320 | producer-specific interpretation. */ | |
c0ab21c2 | 9321 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9322 | |
9323 | reader.keep (); | |
10b3939b DJ |
9324 | } |
9325 | ||
3da10d80 KS |
9326 | /* Add a DIE to the delayed physname list. */ |
9327 | ||
9328 | static void | |
9329 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9330 | const char *name, struct die_info *die, | |
9331 | struct dwarf2_cu *cu) | |
9332 | { | |
9333 | struct delayed_method_info mi; | |
9334 | mi.type = type; | |
9335 | mi.fnfield_index = fnfield_index; | |
9336 | mi.index = index; | |
9337 | mi.name = name; | |
9338 | mi.die = die; | |
c89b44cd | 9339 | cu->method_list.push_back (mi); |
3da10d80 KS |
9340 | } |
9341 | ||
3693fdb3 PA |
9342 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9343 | "const" / "volatile". If so, decrements LEN by the length of the | |
9344 | modifier and return true. Otherwise return false. */ | |
9345 | ||
9346 | template<size_t N> | |
9347 | static bool | |
9348 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9349 | { | |
9350 | size_t mod_len = sizeof (mod) - 1; | |
9351 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9352 | { | |
9353 | len -= mod_len; | |
9354 | return true; | |
9355 | } | |
9356 | return false; | |
9357 | } | |
9358 | ||
3da10d80 KS |
9359 | /* Compute the physnames of any methods on the CU's method list. |
9360 | ||
9361 | The computation of method physnames is delayed in order to avoid the | |
9362 | (bad) condition that one of the method's formal parameters is of an as yet | |
9363 | incomplete type. */ | |
9364 | ||
9365 | static void | |
9366 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9367 | { | |
3693fdb3 | 9368 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9369 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9370 | return; |
9371 | gdb_assert (cu->language == language_cplus); | |
9372 | ||
52941706 | 9373 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9374 | { |
1d06ead6 | 9375 | const char *physname; |
3da10d80 | 9376 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9377 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9378 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9379 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9380 | = physname ? physname : ""; |
3693fdb3 PA |
9381 | |
9382 | /* Since there's no tag to indicate whether a method is a | |
9383 | const/volatile overload, extract that information out of the | |
9384 | demangled name. */ | |
9385 | if (physname != NULL) | |
9386 | { | |
9387 | size_t len = strlen (physname); | |
9388 | ||
9389 | while (1) | |
9390 | { | |
9391 | if (physname[len] == ')') /* shortcut */ | |
9392 | break; | |
9393 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9394 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9395 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9396 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9397 | else |
9398 | break; | |
9399 | } | |
9400 | } | |
3da10d80 | 9401 | } |
c89b44cd TT |
9402 | |
9403 | /* The list is no longer needed. */ | |
9404 | cu->method_list.clear (); | |
3da10d80 KS |
9405 | } |
9406 | ||
a766d390 DE |
9407 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9408 | and it's not clear if/how imported objects will appear. | |
9409 | To keep Go support simple until that's worked out, | |
9410 | go back through what we've read and create something usable. | |
9411 | We could do this while processing each DIE, and feels kinda cleaner, | |
9412 | but that way is more invasive. | |
9413 | This is to, for example, allow the user to type "p var" or "b main" | |
9414 | without having to specify the package name, and allow lookups | |
9415 | of module.object to work in contexts that use the expression | |
9416 | parser. */ | |
9417 | ||
9418 | static void | |
9419 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9420 | { | |
421d1616 | 9421 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9422 | struct pending *list; |
9423 | int i; | |
9424 | ||
c24bdb02 | 9425 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9426 | list != NULL; |
9427 | list = list->next) | |
a766d390 DE |
9428 | { |
9429 | for (i = 0; i < list->nsyms; ++i) | |
9430 | { | |
9431 | struct symbol *sym = list->symbol[i]; | |
9432 | ||
c1b5c1eb | 9433 | if (sym->language () == language_go |
a766d390 DE |
9434 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9435 | { | |
421d1616 TT |
9436 | gdb::unique_xmalloc_ptr<char> this_package_name |
9437 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9438 | |
9439 | if (this_package_name == NULL) | |
9440 | continue; | |
9441 | if (package_name == NULL) | |
421d1616 | 9442 | package_name = std::move (this_package_name); |
a766d390 DE |
9443 | else |
9444 | { | |
5e22e966 | 9445 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9446 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9447 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9448 | (symbol_symtab (sym) != NULL |
9449 | ? symtab_to_filename_for_display | |
9450 | (symbol_symtab (sym)) | |
e3b94546 | 9451 | : objfile_name (objfile)), |
421d1616 | 9452 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9453 | } |
9454 | } | |
9455 | } | |
9456 | } | |
9457 | ||
9458 | if (package_name != NULL) | |
9459 | { | |
5e22e966 | 9460 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9461 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9462 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9463 | saved_package_name); | |
a766d390 DE |
9464 | struct symbol *sym; |
9465 | ||
8c14c3a3 | 9466 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9467 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9468 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9469 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9470 | e.g., "main" finds the "main" module and not C's main(). */ | |
9471 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9472 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9473 | SYMBOL_TYPE (sym) = type; |
9474 | ||
c24bdb02 | 9475 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9476 | } |
9477 | } | |
9478 | ||
c9317f21 TT |
9479 | /* Allocate a fully-qualified name consisting of the two parts on the |
9480 | obstack. */ | |
9481 | ||
9482 | static const char * | |
9483 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9484 | { | |
9485 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9486 | } | |
9487 | ||
9c6a1327 TT |
9488 | /* A helper that allocates a variant part to attach to a Rust enum |
9489 | type. OBSTACK is where the results should be allocated. TYPE is | |
9490 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
57d02173 TT |
9491 | discriminant. It must be the index of one of the fields of TYPE, |
9492 | or -1 to mean there is no discriminant (univariant enum). | |
9c6a1327 TT |
9493 | DEFAULT_INDEX is the index of the default field; or -1 if there is |
9494 | no default. RANGES is indexed by "effective" field number (the | |
9495 | field index, but omitting the discriminant and default fields) and | |
9496 | must hold the discriminant values used by the variants. Note that | |
9497 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9498 | already allocated on it, or static. */ | |
c9317f21 | 9499 | |
9c6a1327 TT |
9500 | static void |
9501 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9502 | int discriminant_index, int default_index, | |
9503 | gdb::array_view<discriminant_range> ranges) | |
9504 | { | |
57d02173 TT |
9505 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. */ |
9506 | gdb_assert (discriminant_index == -1 | |
9507 | || (discriminant_index >= 0 | |
9508 | && discriminant_index < type->num_fields ())); | |
c9317f21 | 9509 | gdb_assert (default_index == -1 |
1f704f76 | 9510 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9511 | |
9c6a1327 | 9512 | /* We have one variant for each non-discriminant field. */ |
57d02173 TT |
9513 | int n_variants = type->num_fields (); |
9514 | if (discriminant_index != -1) | |
9515 | --n_variants; | |
c9317f21 | 9516 | |
9c6a1327 TT |
9517 | variant *variants = new (obstack) variant[n_variants]; |
9518 | int var_idx = 0; | |
9519 | int range_idx = 0; | |
1f704f76 | 9520 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9521 | { |
9522 | if (i == discriminant_index) | |
9523 | continue; | |
c9317f21 | 9524 | |
9c6a1327 TT |
9525 | variants[var_idx].first_field = i; |
9526 | variants[var_idx].last_field = i + 1; | |
9527 | ||
9528 | /* The default field does not need a range, but other fields do. | |
9529 | We skipped the discriminant above. */ | |
9530 | if (i != default_index) | |
9531 | { | |
9532 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9533 | ++range_idx; | |
9534 | } | |
c9317f21 | 9535 | |
9c6a1327 TT |
9536 | ++var_idx; |
9537 | } | |
9538 | ||
9539 | gdb_assert (range_idx == ranges.size ()); | |
9540 | gdb_assert (var_idx == n_variants); | |
9541 | ||
9542 | variant_part *part = new (obstack) variant_part; | |
9543 | part->discriminant_index = discriminant_index; | |
57d02173 TT |
9544 | /* If there is no discriminant, then whether it is signed is of no |
9545 | consequence. */ | |
9546 | part->is_unsigned | |
9547 | = (discriminant_index == -1 | |
9548 | ? false | |
c6d940a9 | 9549 | : type->field (discriminant_index).type ()->is_unsigned ()); |
9c6a1327 TT |
9550 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9551 | ||
9552 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9553 | gdb::array_view<variant_part> *prop_value | |
9554 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9555 | |
9c6a1327 | 9556 | struct dynamic_prop prop; |
8c2e4e06 | 9557 | prop.set_variant_parts (prop_value); |
9c6a1327 | 9558 | |
5c54719c | 9559 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9560 | } |
9561 | ||
9562 | /* Some versions of rustc emitted enums in an unusual way. | |
9563 | ||
9564 | Ordinary enums were emitted as unions. The first element of each | |
9565 | structure in the union was named "RUST$ENUM$DISR". This element | |
9566 | held the discriminant. | |
9567 | ||
9568 | These versions of Rust also implemented the "non-zero" | |
9569 | optimization. When the enum had two values, and one is empty and | |
9570 | the other holds a pointer that cannot be zero, the pointer is used | |
9571 | as the discriminant, with a zero value meaning the empty variant. | |
9572 | Here, the union's first member is of the form | |
9573 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9574 | where the fieldnos are the indices of the fields that should be | |
9575 | traversed in order to find the field (which may be several fields deep) | |
9576 | and the variantname is the name of the variant of the case when the | |
9577 | field is zero. | |
9578 | ||
9579 | This function recognizes whether TYPE is of one of these forms, | |
9580 | and, if so, smashes it to be a variant type. */ | |
9581 | ||
9582 | static void | |
9583 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9584 | { | |
78134374 | 9585 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9586 | |
9587 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9588 | if (type->num_fields () == 0) |
c9317f21 TT |
9589 | return; |
9590 | ||
9591 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9592 | if (type->num_fields () == 1 |
c9317f21 TT |
9593 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9594 | { | |
9595 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9596 | ||
9597 | /* Decode the field name to find the offset of the | |
9598 | discriminant. */ | |
9599 | ULONGEST bit_offset = 0; | |
940da03e | 9600 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9601 | while (name[0] >= '0' && name[0] <= '9') |
9602 | { | |
9603 | char *tail; | |
9604 | unsigned long index = strtoul (name, &tail, 10); | |
9605 | name = tail; | |
9606 | if (*name != '$' | |
1f704f76 | 9607 | || index >= field_type->num_fields () |
c9317f21 TT |
9608 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9609 | != FIELD_LOC_KIND_BITPOS)) | |
9610 | { | |
b98664d3 | 9611 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9612 | "[in module %s]"), |
9613 | TYPE_FIELD_NAME (type, 0), | |
9614 | objfile_name (objfile)); | |
9615 | return; | |
9616 | } | |
9617 | ++name; | |
9618 | ||
9619 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9620 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9621 | } |
9622 | ||
9c6a1327 TT |
9623 | /* Smash this type to be a structure type. We have to do this |
9624 | because the type has already been recorded. */ | |
67607e24 | 9625 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9626 | type->set_num_fields (3); |
9c6a1327 | 9627 | /* Save the field we care about. */ |
ceacbf6e | 9628 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9629 | type->set_fields |
9630 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9631 | |
9c6a1327 | 9632 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9633 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9634 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9635 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9636 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9637 | |
9638 | /* The order of fields doesn't really matter, so put the real | |
9639 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9640 | type->field (1) = saved_field; |
9c6a1327 | 9641 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9642 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9643 | type->field (1).type ()->set_name | |
7d93a1e0 | 9644 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9645 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9646 | |
9647 | const char *dataless_name | |
7d93a1e0 | 9648 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9649 | name); |
9650 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9651 | dataless_name); | |
5d14b6e5 | 9652 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9653 | /* NAME points into the original discriminant name, which |
9654 | already has the correct lifetime. */ | |
9c6a1327 | 9655 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9656 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9657 | |
9c6a1327 TT |
9658 | /* Indicate that this is a variant type. */ |
9659 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9660 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9661 | } |
77c2dba3 TT |
9662 | /* A union with a single anonymous field is probably an old-style |
9663 | univariant enum. */ | |
1f704f76 | 9664 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9665 | { |
c9317f21 TT |
9666 | /* Smash this type to be a structure type. We have to do this |
9667 | because the type has already been recorded. */ | |
67607e24 | 9668 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9669 | |
940da03e | 9670 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9671 | const char *variant_name |
7d93a1e0 | 9672 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9673 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9674 | field_type->set_name |
9675 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9676 | type->name (), variant_name)); |
57d02173 TT |
9677 | |
9678 | alloc_rust_variant (&objfile->objfile_obstack, type, -1, 0, {}); | |
c9317f21 TT |
9679 | } |
9680 | else | |
9681 | { | |
9682 | struct type *disr_type = nullptr; | |
1f704f76 | 9683 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9684 | { |
940da03e | 9685 | disr_type = type->field (i).type (); |
c9317f21 | 9686 | |
78134374 | 9687 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9688 | { |
9689 | /* All fields of a true enum will be structs. */ | |
9690 | return; | |
9691 | } | |
1f704f76 | 9692 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9693 | { |
9694 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9695 | disr_type = nullptr; |
c9317f21 TT |
9696 | } |
9697 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9698 | "RUST$ENUM$DISR") != 0) | |
9699 | { | |
9700 | /* Not a Rust enum. */ | |
9701 | return; | |
9702 | } | |
9703 | else | |
9704 | { | |
9705 | /* Found one. */ | |
9706 | break; | |
9707 | } | |
9708 | } | |
9709 | ||
9710 | /* If we got here without a discriminant, then it's probably | |
9711 | just a union. */ | |
9712 | if (disr_type == nullptr) | |
9713 | return; | |
9714 | ||
9715 | /* Smash this type to be a structure type. We have to do this | |
9716 | because the type has already been recorded. */ | |
67607e24 | 9717 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9718 | |
9c6a1327 | 9719 | /* Make space for the discriminant field. */ |
ceacbf6e | 9720 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9721 | field *new_fields |
1f704f76 | 9722 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9723 | * sizeof (struct field))); |
80fc5e77 | 9724 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9725 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9726 | type->set_fields (new_fields); |
1f704f76 | 9727 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9728 | |
9729 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9730 | type->field (0) = *disr_field; |
9c6a1327 TT |
9731 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9732 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9733 | |
9734 | /* We need a way to find the correct discriminant given a | |
9735 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9736 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9737 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9738 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9739 | { |
9740 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9741 | { | |
9742 | const char *name | |
9743 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9744 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9745 | } | |
9746 | } | |
9747 | ||
1f704f76 | 9748 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9749 | /* We don't need a range entry for the discriminant, but we do |
9750 | need one for every other field, as there is no default | |
9751 | variant. */ | |
9752 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9753 | discriminant_range, | |
9754 | n_fields - 1); | |
c9317f21 TT |
9755 | /* Skip the discriminant here. */ |
9756 | for (int i = 1; i < n_fields; ++i) | |
9757 | { | |
9758 | /* Find the final word in the name of this variant's type. | |
9759 | That name can be used to look up the correct | |
9760 | discriminant. */ | |
9761 | const char *variant_name | |
940da03e | 9762 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9763 | |
9764 | auto iter = discriminant_map.find (variant_name); | |
9765 | if (iter != discriminant_map.end ()) | |
9c6a1327 | 9766 | { |
57d02173 TT |
9767 | ranges[i - 1].low = iter->second; |
9768 | ranges[i - 1].high = iter->second; | |
9c6a1327 | 9769 | } |
c9317f21 | 9770 | |
57d02173 TT |
9771 | /* In Rust, each element should have the size of the |
9772 | enclosing enum. */ | |
9773 | TYPE_LENGTH (type->field (i).type ()) = TYPE_LENGTH (type); | |
9774 | ||
bedda9ac | 9775 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9776 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9777 | if (sub_type->num_fields () > 0) |
bedda9ac | 9778 | { |
5e33d5f4 | 9779 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9780 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9781 | } |
9c6a1327 | 9782 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9783 | sub_type->set_name |
9784 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9785 | type->name (), variant_name)); |
c9317f21 | 9786 | } |
9c6a1327 TT |
9787 | |
9788 | /* Indicate that this is a variant type. */ | |
a1520ad8 | 9789 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, -1, |
9c6a1327 TT |
9790 | gdb::array_view<discriminant_range> (ranges, |
9791 | n_fields - 1)); | |
c9317f21 TT |
9792 | } |
9793 | } | |
9794 | ||
9795 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9796 | ||
9797 | static void | |
9798 | rust_union_quirks (struct dwarf2_cu *cu) | |
9799 | { | |
9800 | gdb_assert (cu->language == language_rust); | |
52941706 | 9801 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9802 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9803 | /* We don't need this any more. */ |
9804 | cu->rust_unions.clear (); | |
c9317f21 TT |
9805 | } |
9806 | ||
8adb8487 TT |
9807 | /* See read.h. */ |
9808 | ||
9809 | type_unit_group_unshareable * | |
9810 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9811 | { | |
9812 | auto iter = this->m_type_units.find (tu_group); | |
9813 | if (iter != this->m_type_units.end ()) | |
9814 | return iter->second.get (); | |
9815 | ||
9816 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9817 | type_unit_group_unshareable *result = uniq.get (); | |
9818 | this->m_type_units[tu_group] = std::move (uniq); | |
9819 | return result; | |
9820 | } | |
9821 | ||
e286671b TT |
9822 | struct type * |
9823 | dwarf2_per_objfile::get_type_for_signatured_type | |
9824 | (signatured_type *sig_type) const | |
9825 | { | |
9826 | auto iter = this->m_type_map.find (sig_type); | |
9827 | if (iter == this->m_type_map.end ()) | |
9828 | return nullptr; | |
9829 | ||
9830 | return iter->second; | |
9831 | } | |
9832 | ||
9833 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9834 | (signatured_type *sig_type, struct type *type) | |
9835 | { | |
9836 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9837 | ||
9838 | this->m_type_map[sig_type] = type; | |
9839 | } | |
9840 | ||
95554aad TT |
9841 | /* A helper function for computing the list of all symbol tables |
9842 | included by PER_CU. */ | |
9843 | ||
9844 | static void | |
4c39bc03 | 9845 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9846 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9847 | dwarf2_per_cu_data *per_cu, |
9848 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9849 | struct compunit_symtab *immediate_parent) |
95554aad | 9850 | { |
af758d11 | 9851 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9852 | if (*slot != NULL) |
9853 | { | |
9854 | /* This inclusion and its children have been processed. */ | |
9855 | return; | |
9856 | } | |
9857 | ||
9858 | *slot = per_cu; | |
af758d11 | 9859 | |
95554aad | 9860 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9861 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9862 | if (cust != NULL) |
ec94af83 DE |
9863 | { |
9864 | /* If this is a type unit only add its symbol table if we haven't | |
9865 | seen it yet (type unit per_cu's can share symtabs). */ | |
9866 | if (per_cu->is_debug_types) | |
9867 | { | |
43f3e411 | 9868 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9869 | if (*slot == NULL) |
9870 | { | |
43f3e411 | 9871 | *slot = cust; |
4c39bc03 | 9872 | result->push_back (cust); |
43f3e411 DE |
9873 | if (cust->user == NULL) |
9874 | cust->user = immediate_parent; | |
ec94af83 DE |
9875 | } |
9876 | } | |
9877 | else | |
f9125b6c | 9878 | { |
4c39bc03 | 9879 | result->push_back (cust); |
43f3e411 DE |
9880 | if (cust->user == NULL) |
9881 | cust->user = immediate_parent; | |
f9125b6c | 9882 | } |
ec94af83 | 9883 | } |
95554aad | 9884 | |
ae640021 AB |
9885 | if (!per_cu->imported_symtabs_empty ()) |
9886 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9887 | { | |
9888 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9889 | all_type_symtabs, ptr, per_objfile, |
9890 | cust); | |
ae640021 | 9891 | } |
95554aad TT |
9892 | } |
9893 | ||
43f3e411 | 9894 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9895 | PER_CU. */ |
9896 | ||
9897 | static void | |
43182c09 SM |
9898 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9899 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9900 | { |
f4dc4d17 DE |
9901 | gdb_assert (! per_cu->is_debug_types); |
9902 | ||
ae640021 | 9903 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9904 | { |
ae640021 | 9905 | int len; |
4c39bc03 | 9906 | std::vector<compunit_symtab *> result_symtabs; |
43182c09 | 9907 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9908 | |
9909 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9910 | if (cust == NULL) |
95554aad TT |
9911 | return; |
9912 | ||
280a9412 TT |
9913 | htab_up all_children (htab_create_alloc (1, htab_hash_pointer, |
9914 | htab_eq_pointer, | |
9915 | NULL, xcalloc, xfree)); | |
9916 | htab_up all_type_symtabs (htab_create_alloc (1, htab_hash_pointer, | |
9917 | htab_eq_pointer, | |
9918 | NULL, xcalloc, xfree)); | |
95554aad | 9919 | |
ae640021 | 9920 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 | 9921 | { |
280a9412 TT |
9922 | recursively_compute_inclusions (&result_symtabs, all_children.get (), |
9923 | all_type_symtabs.get (), ptr, | |
9924 | per_objfile, cust); | |
ec94af83 | 9925 | } |
95554aad | 9926 | |
ec94af83 | 9927 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9928 | len = result_symtabs.size (); |
43f3e411 | 9929 | cust->includes |
f6e649dd | 9930 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9931 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9932 | memcpy (cust->includes, result_symtabs.data (), |
9933 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9934 | cust->includes[len] = NULL; |
95554aad TT |
9935 | } |
9936 | } | |
9937 | ||
9938 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9939 | read. */ | |
9940 | ||
9941 | static void | |
976ca316 | 9942 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9943 | { |
976ca316 | 9944 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9945 | { |
9946 | if (! iter->is_debug_types) | |
976ca316 | 9947 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 9948 | } |
95554aad | 9949 | |
976ca316 | 9950 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9951 | } |
9952 | ||
8fc0b21d | 9953 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9954 | already been loaded into memory. */ |
9955 | ||
9956 | static void | |
8fc0b21d | 9957 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 9958 | { |
976ca316 SM |
9959 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9960 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 9961 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9962 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9963 | struct compunit_symtab *cust; |
10b3939b | 9964 | CORE_ADDR baseaddr; |
4359dff1 | 9965 | struct block *static_block; |
3e29f34a | 9966 | CORE_ADDR addr; |
10b3939b | 9967 | |
b3b3bada | 9968 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9969 | |
c89b44cd TT |
9970 | /* Clear the list here in case something was left over. */ |
9971 | cu->method_list.clear (); | |
10b3939b | 9972 | |
95554aad TT |
9973 | cu->language = pretend_language; |
9974 | cu->language_defn = language_def (cu->language); | |
9975 | ||
1c47ec3e TV |
9976 | dwarf2_find_base_address (cu->dies, cu); |
9977 | ||
c906108c | 9978 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9979 | process_die (cu->dies, cu); |
c906108c | 9980 | |
a766d390 DE |
9981 | /* For now fudge the Go package. */ |
9982 | if (cu->language == language_go) | |
9983 | fixup_go_packaging (cu); | |
9984 | ||
5f48f8f3 | 9985 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9986 | should be complete, and it should now be safe to compute all of the |
9987 | physnames. */ | |
9988 | compute_delayed_physnames (cu); | |
3da10d80 | 9989 | |
c9317f21 TT |
9990 | if (cu->language == language_rust) |
9991 | rust_union_quirks (cu); | |
9992 | ||
fae299cd DC |
9993 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9994 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9995 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9996 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9997 | |
3e29f34a | 9998 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9999 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10000 | |
10001 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10002 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10003 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10004 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10005 | this comp unit. */ | |
10006 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10007 | ||
c24bdb02 | 10008 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
10009 | SECT_OFF_TEXT (objfile), |
10010 | 0); | |
c906108c | 10011 | |
43f3e411 | 10012 | if (cust != NULL) |
c906108c | 10013 | { |
df15bd07 | 10014 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10015 | |
8be455d7 JK |
10016 | /* Set symtab language to language from DW_AT_language. If the |
10017 | compilation is from a C file generated by language preprocessors, do | |
10018 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10019 | if (!(cu->language == language_c |
40e3ad0e | 10020 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10021 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10022 | |
10023 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10024 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10025 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10026 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10027 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10028 | |
10029 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10030 | needed, it would be wrong due to missing DW_AT_producer there. | |
10031 | ||
10032 | Still one can confuse GDB by using non-standard GCC compilation | |
10033 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 10034 | */ |
ab260dad | 10035 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10036 | cust->locations_valid = 1; |
e0d00bc7 JK |
10037 | |
10038 | if (gcc_4_minor >= 5) | |
43f3e411 | 10039 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10040 | |
43f3e411 | 10041 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10042 | } |
9291a0cd | 10043 | |
976ca316 | 10044 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 10045 | |
95554aad | 10046 | /* Push it for inclusion processing later. */ |
976ca316 | 10047 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
10048 | |
10049 | /* Not needed any more. */ | |
c24bdb02 | 10050 | cu->reset_builder (); |
f4dc4d17 | 10051 | } |
45cfd468 | 10052 | |
8fc0b21d | 10053 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
10054 | already been loaded into memory. */ |
10055 | ||
10056 | static void | |
8fc0b21d | 10057 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
10058 | enum language pretend_language) |
10059 | { | |
976ca316 SM |
10060 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10061 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 10062 | struct compunit_symtab *cust; |
0186c6a7 DE |
10063 | struct signatured_type *sig_type; |
10064 | ||
8fc0b21d SM |
10065 | gdb_assert (cu->per_cu->is_debug_types); |
10066 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 10067 | |
c89b44cd TT |
10068 | /* Clear the list here in case something was left over. */ |
10069 | cu->method_list.clear (); | |
f4dc4d17 | 10070 | |
f4dc4d17 DE |
10071 | cu->language = pretend_language; |
10072 | cu->language_defn = language_def (cu->language); | |
10073 | ||
10074 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10075 | process_die (cu->dies, cu); | |
10076 | ||
10077 | /* For now fudge the Go package. */ | |
10078 | if (cu->language == language_go) | |
10079 | fixup_go_packaging (cu); | |
10080 | ||
5f48f8f3 | 10081 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10082 | should be complete, and it should now be safe to compute all of the |
10083 | physnames. */ | |
10084 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10085 | |
c9317f21 TT |
10086 | if (cu->language == language_rust) |
10087 | rust_union_quirks (cu); | |
10088 | ||
f4dc4d17 DE |
10089 | /* TUs share symbol tables. |
10090 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10091 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10092 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 10093 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 10094 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 10095 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 10096 | { |
c24bdb02 KS |
10097 | buildsym_compunit *builder = cu->get_builder (); |
10098 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 10099 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 10100 | |
43f3e411 | 10101 | if (cust != NULL) |
f4dc4d17 DE |
10102 | { |
10103 | /* Set symtab language to language from DW_AT_language. If the | |
10104 | compilation is from a C file generated by language preprocessors, | |
10105 | do not set the language if it was already deduced by | |
10106 | start_subfile. */ | |
43f3e411 DE |
10107 | if (!(cu->language == language_c |
10108 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10109 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10110 | } |
10111 | } | |
10112 | else | |
10113 | { | |
c24bdb02 | 10114 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 10115 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
10116 | } |
10117 | ||
976ca316 | 10118 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
10119 | |
10120 | /* Not needed any more. */ | |
c24bdb02 | 10121 | cu->reset_builder (); |
c906108c SS |
10122 | } |
10123 | ||
95554aad TT |
10124 | /* Process an imported unit DIE. */ |
10125 | ||
10126 | static void | |
10127 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10128 | { | |
10129 | struct attribute *attr; | |
10130 | ||
f4dc4d17 DE |
10131 | /* For now we don't handle imported units in type units. */ |
10132 | if (cu->per_cu->is_debug_types) | |
10133 | { | |
10134 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10135 | " supported in type units [in module %s]"), | |
5e22e966 | 10136 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
10137 | } |
10138 | ||
95554aad TT |
10139 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10140 | if (attr != NULL) | |
10141 | { | |
0826b30a | 10142 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 10143 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 10144 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 10145 | dwarf2_per_cu_data *per_cu |
ab432490 | 10146 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 10147 | |
58990295 TV |
10148 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
10149 | into another compilation unit, at root level. Regard this as a hint, | |
10150 | and ignore it. */ | |
10151 | if (die->parent && die->parent->parent == NULL | |
10152 | && per_cu->unit_type == DW_UT_compile | |
10153 | && per_cu->lang == language_cplus) | |
10154 | return; | |
10155 | ||
69d751e3 | 10156 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 10157 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
10158 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
10159 | false, cu->language); | |
95554aad | 10160 | |
ae640021 | 10161 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10162 | } |
10163 | } | |
10164 | ||
4c8aa72d PA |
10165 | /* RAII object that represents a process_die scope: i.e., |
10166 | starts/finishes processing a DIE. */ | |
10167 | class process_die_scope | |
adde2bff | 10168 | { |
4c8aa72d PA |
10169 | public: |
10170 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10171 | : m_die (die), m_cu (cu) | |
10172 | { | |
10173 | /* We should only be processing DIEs not already in process. */ | |
10174 | gdb_assert (!m_die->in_process); | |
10175 | m_die->in_process = true; | |
10176 | } | |
8c3cb9fa | 10177 | |
4c8aa72d PA |
10178 | ~process_die_scope () |
10179 | { | |
10180 | m_die->in_process = false; | |
10181 | ||
10182 | /* If we're done processing the DIE for the CU that owns the line | |
10183 | header, we don't need the line header anymore. */ | |
10184 | if (m_cu->line_header_die_owner == m_die) | |
10185 | { | |
10186 | delete m_cu->line_header; | |
10187 | m_cu->line_header = NULL; | |
10188 | m_cu->line_header_die_owner = NULL; | |
10189 | } | |
10190 | } | |
10191 | ||
10192 | private: | |
10193 | die_info *m_die; | |
10194 | dwarf2_cu *m_cu; | |
10195 | }; | |
adde2bff | 10196 | |
c906108c SS |
10197 | /* Process a die and its children. */ |
10198 | ||
10199 | static void | |
e7c27a73 | 10200 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10201 | { |
4c8aa72d | 10202 | process_die_scope scope (die, cu); |
adde2bff | 10203 | |
c906108c SS |
10204 | switch (die->tag) |
10205 | { | |
10206 | case DW_TAG_padding: | |
10207 | break; | |
10208 | case DW_TAG_compile_unit: | |
95554aad | 10209 | case DW_TAG_partial_unit: |
e7c27a73 | 10210 | read_file_scope (die, cu); |
c906108c | 10211 | break; |
348e048f DE |
10212 | case DW_TAG_type_unit: |
10213 | read_type_unit_scope (die, cu); | |
10214 | break; | |
c906108c | 10215 | case DW_TAG_subprogram: |
0a4b0913 AB |
10216 | /* Nested subprograms in Fortran get a prefix. */ |
10217 | if (cu->language == language_fortran | |
10218 | && die->parent != NULL | |
10219 | && die->parent->tag == DW_TAG_subprogram) | |
10220 | cu->processing_has_namespace_info = true; | |
10221 | /* Fall through. */ | |
c906108c | 10222 | case DW_TAG_inlined_subroutine: |
edb3359d | 10223 | read_func_scope (die, cu); |
c906108c SS |
10224 | break; |
10225 | case DW_TAG_lexical_block: | |
14898363 L |
10226 | case DW_TAG_try_block: |
10227 | case DW_TAG_catch_block: | |
e7c27a73 | 10228 | read_lexical_block_scope (die, cu); |
c906108c | 10229 | break; |
216f72a1 | 10230 | case DW_TAG_call_site: |
96408a79 SA |
10231 | case DW_TAG_GNU_call_site: |
10232 | read_call_site_scope (die, cu); | |
10233 | break; | |
c906108c | 10234 | case DW_TAG_class_type: |
680b30c7 | 10235 | case DW_TAG_interface_type: |
c906108c SS |
10236 | case DW_TAG_structure_type: |
10237 | case DW_TAG_union_type: | |
134d01f1 | 10238 | process_structure_scope (die, cu); |
c906108c SS |
10239 | break; |
10240 | case DW_TAG_enumeration_type: | |
134d01f1 | 10241 | process_enumeration_scope (die, cu); |
c906108c | 10242 | break; |
134d01f1 | 10243 | |
f792889a DJ |
10244 | /* These dies have a type, but processing them does not create |
10245 | a symbol or recurse to process the children. Therefore we can | |
10246 | read them on-demand through read_type_die. */ | |
c906108c | 10247 | case DW_TAG_subroutine_type: |
72019c9c | 10248 | case DW_TAG_set_type: |
c906108c | 10249 | case DW_TAG_pointer_type: |
c906108c | 10250 | case DW_TAG_ptr_to_member_type: |
c906108c | 10251 | case DW_TAG_reference_type: |
4297a3f0 | 10252 | case DW_TAG_rvalue_reference_type: |
c906108c | 10253 | case DW_TAG_string_type: |
c906108c | 10254 | break; |
134d01f1 | 10255 | |
d8f62e84 TT |
10256 | case DW_TAG_array_type: |
10257 | /* We only need to handle this case for Ada -- in other | |
10258 | languages, it's normal for the compiler to emit a typedef | |
10259 | instead. */ | |
10260 | if (cu->language != language_ada) | |
10261 | break; | |
10262 | /* FALLTHROUGH */ | |
c906108c | 10263 | case DW_TAG_base_type: |
a02abb62 | 10264 | case DW_TAG_subrange_type: |
cb249c71 | 10265 | case DW_TAG_typedef: |
134d01f1 | 10266 | /* Add a typedef symbol for the type definition, if it has a |
dda83cd7 | 10267 | DW_AT_name. */ |
f792889a | 10268 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10269 | break; |
c906108c | 10270 | case DW_TAG_common_block: |
e7c27a73 | 10271 | read_common_block (die, cu); |
c906108c SS |
10272 | break; |
10273 | case DW_TAG_common_inclusion: | |
10274 | break; | |
d9fa45fe | 10275 | case DW_TAG_namespace: |
9068261f | 10276 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10277 | read_namespace (die, cu); |
d9fa45fe | 10278 | break; |
5d7cb8df | 10279 | case DW_TAG_module: |
9068261f | 10280 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10281 | read_module (die, cu); |
10282 | break; | |
d9fa45fe | 10283 | case DW_TAG_imported_declaration: |
9068261f | 10284 | cu->processing_has_namespace_info = true; |
74921315 KS |
10285 | if (read_namespace_alias (die, cu)) |
10286 | break; | |
86a73007 TT |
10287 | /* The declaration is not a global namespace alias. */ |
10288 | /* Fall through. */ | |
d9fa45fe | 10289 | case DW_TAG_imported_module: |
9068261f | 10290 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10291 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10292 | || cu->language != language_fortran)) | |
b98664d3 | 10293 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10294 | dwarf_tag_name (die->tag)); |
10295 | read_import_statement (die, cu); | |
d9fa45fe | 10296 | break; |
95554aad TT |
10297 | |
10298 | case DW_TAG_imported_unit: | |
10299 | process_imported_unit_die (die, cu); | |
10300 | break; | |
10301 | ||
71a3c369 TT |
10302 | case DW_TAG_variable: |
10303 | read_variable (die, cu); | |
10304 | break; | |
10305 | ||
c906108c | 10306 | default: |
e7c27a73 | 10307 | new_symbol (die, NULL, cu); |
c906108c SS |
10308 | break; |
10309 | } | |
10310 | } | |
ca69b9e6 DE |
10311 | \f |
10312 | /* DWARF name computation. */ | |
c906108c | 10313 | |
94af9270 KS |
10314 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10315 | needs to have the name of the scope prepended to the name listed in the | |
10316 | die. */ | |
10317 | ||
10318 | static int | |
10319 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10320 | { | |
1c809c68 TT |
10321 | struct attribute *attr; |
10322 | ||
94af9270 KS |
10323 | switch (die->tag) |
10324 | { | |
10325 | case DW_TAG_namespace: | |
10326 | case DW_TAG_typedef: | |
10327 | case DW_TAG_class_type: | |
10328 | case DW_TAG_interface_type: | |
10329 | case DW_TAG_structure_type: | |
10330 | case DW_TAG_union_type: | |
10331 | case DW_TAG_enumeration_type: | |
10332 | case DW_TAG_enumerator: | |
10333 | case DW_TAG_subprogram: | |
08a76f8a | 10334 | case DW_TAG_inlined_subroutine: |
94af9270 | 10335 | case DW_TAG_member: |
74921315 | 10336 | case DW_TAG_imported_declaration: |
94af9270 KS |
10337 | return 1; |
10338 | ||
10339 | case DW_TAG_variable: | |
c2b0a229 | 10340 | case DW_TAG_constant: |
94af9270 KS |
10341 | /* We only need to prefix "globally" visible variables. These include |
10342 | any variable marked with DW_AT_external or any variable that | |
10343 | lives in a namespace. [Variables in anonymous namespaces | |
10344 | require prefixing, but they are not DW_AT_external.] */ | |
10345 | ||
10346 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10347 | { | |
10348 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10349 | |
94af9270 KS |
10350 | return die_needs_namespace (die_specification (die, &spec_cu), |
10351 | spec_cu); | |
10352 | } | |
10353 | ||
1c809c68 | 10354 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10355 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10356 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10357 | return 0; |
10358 | /* A variable in a lexical block of some kind does not need a | |
10359 | namespace, even though in C++ such variables may be external | |
10360 | and have a mangled name. */ | |
10361 | if (die->parent->tag == DW_TAG_lexical_block | |
10362 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10363 | || die->parent->tag == DW_TAG_catch_block |
10364 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10365 | return 0; |
10366 | return 1; | |
94af9270 KS |
10367 | |
10368 | default: | |
10369 | return 0; | |
10370 | } | |
10371 | } | |
10372 | ||
73b9be8b KS |
10373 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10374 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10375 | defined for the given DIE. */ | |
10376 | ||
10377 | static struct attribute * | |
10378 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10379 | { | |
10380 | struct attribute *attr; | |
10381 | ||
10382 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10383 | if (attr == NULL) | |
10384 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10385 | ||
10386 | return attr; | |
10387 | } | |
10388 | ||
10389 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10390 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10391 | defined for the given DIE. */ | |
10392 | ||
10393 | static const char * | |
10394 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10395 | { | |
10396 | const char *linkage_name; | |
10397 | ||
10398 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10399 | if (linkage_name == NULL) | |
10400 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10401 | ||
787de330 TT |
10402 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10403 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10404 | if (cu->language == language_rust && linkage_name != NULL | |
10405 | && strchr (linkage_name, '{') != NULL) | |
10406 | linkage_name = NULL; | |
10407 | ||
73b9be8b KS |
10408 | return linkage_name; |
10409 | } | |
10410 | ||
94af9270 | 10411 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10412 | compute the physname for the object, which include a method's: |
9c37b5ae | 10413 | - formal parameters (C++), |
a766d390 | 10414 | - receiver type (Go), |
a766d390 DE |
10415 | |
10416 | The term "physname" is a bit confusing. | |
10417 | For C++, for example, it is the demangled name. | |
10418 | For Go, for example, it's the mangled name. | |
94af9270 | 10419 | |
af6b7be1 JB |
10420 | For Ada, return the DIE's linkage name rather than the fully qualified |
10421 | name. PHYSNAME is ignored.. | |
10422 | ||
5989a64e | 10423 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10424 | canonicalized. */ |
94af9270 KS |
10425 | |
10426 | static const char * | |
15d034d0 TT |
10427 | dwarf2_compute_name (const char *name, |
10428 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10429 | int physname) |
10430 | { | |
5e22e966 | 10431 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10432 | |
94af9270 KS |
10433 | if (name == NULL) |
10434 | name = dwarf2_name (die, cu); | |
10435 | ||
2ee7123e DE |
10436 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10437 | but otherwise compute it by typename_concat inside GDB. | |
10438 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10439 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10440 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10441 | will set the demangled name to the result of dwarf2_full_name, and it is |
10442 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10443 | if (cu->language == language_ada |
10444 | || (cu->language == language_fortran && physname)) | |
10445 | { | |
10446 | /* For Ada unit, we prefer the linkage name over the name, as | |
10447 | the former contains the exported name, which the user expects | |
10448 | to be able to reference. Ideally, we want the user to be able | |
10449 | to reference this entity using either natural or linkage name, | |
10450 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10451 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10452 | |
2ee7123e DE |
10453 | if (linkage_name != NULL) |
10454 | return linkage_name; | |
f55ee35c JK |
10455 | } |
10456 | ||
94af9270 KS |
10457 | /* These are the only languages we know how to qualify names in. */ |
10458 | if (name != NULL | |
9c37b5ae | 10459 | && (cu->language == language_cplus |
c44af4eb TT |
10460 | || cu->language == language_fortran || cu->language == language_d |
10461 | || cu->language == language_rust)) | |
94af9270 KS |
10462 | { |
10463 | if (die_needs_namespace (die, cu)) | |
10464 | { | |
0d5cff50 | 10465 | const char *prefix; |
34a68019 | 10466 | const char *canonical_name = NULL; |
94af9270 | 10467 | |
d7e74731 PA |
10468 | string_file buf; |
10469 | ||
94af9270 | 10470 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10471 | if (*prefix != '\0') |
10472 | { | |
43816ebc TT |
10473 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10474 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10475 | |
43816ebc | 10476 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10477 | } |
10478 | else | |
d7e74731 | 10479 | buf.puts (name); |
94af9270 | 10480 | |
98bfdba5 PA |
10481 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10482 | as children with DW_TAG_template_type_param or | |
10483 | DW_TAG_value_type_param. If the latter, add them to the name | |
10484 | here. If the name already has template parameters, then | |
10485 | skip this step; some versions of GCC emit both, and | |
10486 | it is more efficient to use the pre-computed name. | |
10487 | ||
10488 | Something to keep in mind about this process: it is very | |
10489 | unlikely, or in some cases downright impossible, to produce | |
10490 | something that will match the mangled name of a function. | |
10491 | If the definition of the function has the same debug info, | |
10492 | we should be able to match up with it anyway. But fallbacks | |
10493 | using the minimal symbol, for instance to find a method | |
10494 | implemented in a stripped copy of libstdc++, will not work. | |
10495 | If we do not have debug info for the definition, we will have to | |
10496 | match them up some other way. | |
10497 | ||
10498 | When we do name matching there is a related problem with function | |
10499 | templates; two instantiated function templates are allowed to | |
10500 | differ only by their return types, which we do not add here. */ | |
10501 | ||
10502 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10503 | { | |
10504 | struct attribute *attr; | |
10505 | struct die_info *child; | |
10506 | int first = 1; | |
2c75ccb2 | 10507 | const language_defn *cplus_lang = language_def (cu->language); |
98bfdba5 PA |
10508 | |
10509 | die->building_fullname = 1; | |
10510 | ||
10511 | for (child = die->child; child != NULL; child = child->sibling) | |
10512 | { | |
10513 | struct type *type; | |
12df843f | 10514 | LONGEST value; |
d521ce57 | 10515 | const gdb_byte *bytes; |
98bfdba5 PA |
10516 | struct dwarf2_locexpr_baton *baton; |
10517 | struct value *v; | |
10518 | ||
10519 | if (child->tag != DW_TAG_template_type_param | |
10520 | && child->tag != DW_TAG_template_value_param) | |
10521 | continue; | |
10522 | ||
10523 | if (first) | |
10524 | { | |
d7e74731 | 10525 | buf.puts ("<"); |
98bfdba5 PA |
10526 | first = 0; |
10527 | } | |
10528 | else | |
d7e74731 | 10529 | buf.puts (", "); |
98bfdba5 PA |
10530 | |
10531 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10532 | if (attr == NULL) | |
10533 | { | |
b98664d3 | 10534 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10535 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10536 | continue; |
10537 | } | |
10538 | type = die_type (child, cu); | |
10539 | ||
10540 | if (child->tag == DW_TAG_template_type_param) | |
10541 | { | |
2c75ccb2 AB |
10542 | cplus_lang->print_type (type, "", &buf, -1, 0, |
10543 | &type_print_raw_options); | |
98bfdba5 PA |
10544 | continue; |
10545 | } | |
10546 | ||
10547 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10548 | if (attr == NULL) | |
10549 | { | |
b98664d3 | 10550 | complaint (_("template parameter missing " |
3e43a32a | 10551 | "DW_AT_const_value")); |
d7e74731 | 10552 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10553 | continue; |
10554 | } | |
10555 | ||
10556 | dwarf2_const_value_attr (attr, type, name, | |
10557 | &cu->comp_unit_obstack, cu, | |
10558 | &value, &bytes, &baton); | |
10559 | ||
20ce4123 | 10560 | if (type->has_no_signedness ()) |
98bfdba5 PA |
10561 | /* GDB prints characters as NUMBER 'CHAR'. If that's |
10562 | changed, this can use value_print instead. */ | |
2c75ccb2 | 10563 | cplus_lang->printchar (value, type, &buf); |
98bfdba5 PA |
10564 | else |
10565 | { | |
10566 | struct value_print_options opts; | |
10567 | ||
10568 | if (baton != NULL) | |
10569 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10570 | baton->data, | |
10571 | baton->size, | |
9f47c707 SM |
10572 | baton->per_cu, |
10573 | baton->per_objfile); | |
98bfdba5 PA |
10574 | else if (bytes != NULL) |
10575 | { | |
10576 | v = allocate_value (type); | |
10577 | memcpy (value_contents_writeable (v), bytes, | |
10578 | TYPE_LENGTH (type)); | |
10579 | } | |
10580 | else | |
10581 | v = value_from_longest (type, value); | |
10582 | ||
3e43a32a MS |
10583 | /* Specify decimal so that we do not depend on |
10584 | the radix. */ | |
98bfdba5 PA |
10585 | get_formatted_print_options (&opts, 'd'); |
10586 | opts.raw = 1; | |
d7e74731 | 10587 | value_print (v, &buf, &opts); |
98bfdba5 | 10588 | release_value (v); |
98bfdba5 PA |
10589 | } |
10590 | } | |
10591 | ||
10592 | die->building_fullname = 0; | |
10593 | ||
10594 | if (!first) | |
10595 | { | |
10596 | /* Close the argument list, with a space if necessary | |
10597 | (nested templates). */ | |
d7e74731 PA |
10598 | if (!buf.empty () && buf.string ().back () == '>') |
10599 | buf.puts (" >"); | |
98bfdba5 | 10600 | else |
d7e74731 | 10601 | buf.puts (">"); |
98bfdba5 PA |
10602 | } |
10603 | } | |
10604 | ||
9c37b5ae | 10605 | /* For C++ methods, append formal parameter type |
94af9270 | 10606 | information, if PHYSNAME. */ |
6e70227d | 10607 | |
94af9270 | 10608 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10609 | && cu->language == language_cplus) |
94af9270 KS |
10610 | { |
10611 | struct type *type = read_type_die (die, cu); | |
10612 | ||
d7e74731 | 10613 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10614 | &type_print_raw_options); |
94af9270 | 10615 | |
9c37b5ae | 10616 | if (cu->language == language_cplus) |
94af9270 | 10617 | { |
60430eff DJ |
10618 | /* Assume that an artificial first parameter is |
10619 | "this", but do not crash if it is not. RealView | |
10620 | marks unnamed (and thus unused) parameters as | |
10621 | artificial; there is no way to differentiate | |
10622 | the two cases. */ | |
1f704f76 | 10623 | if (type->num_fields () > 0 |
94af9270 | 10624 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10625 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10626 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10627 | buf.puts (" const"); |
94af9270 KS |
10628 | } |
10629 | } | |
10630 | ||
d7e74731 | 10631 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10632 | |
10633 | if (cu->language == language_cplus) | |
34a68019 | 10634 | canonical_name |
322a8516 | 10635 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10636 | objfile); |
34a68019 TT |
10637 | |
10638 | /* If we only computed INTERMEDIATE_NAME, or if | |
10639 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10640 | intern it. */ |
322a8516 | 10641 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10642 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10643 | else |
10644 | name = canonical_name; | |
94af9270 KS |
10645 | } |
10646 | } | |
10647 | ||
10648 | return name; | |
10649 | } | |
10650 | ||
0114d602 DJ |
10651 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10652 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10653 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10654 | not have a name. NAME may either be from a previous call to |
10655 | dwarf2_name or NULL. | |
10656 | ||
9c37b5ae | 10657 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10658 | |
10659 | static const char * | |
15d034d0 | 10660 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10661 | { |
94af9270 KS |
10662 | return dwarf2_compute_name (name, die, cu, 0); |
10663 | } | |
0114d602 | 10664 | |
94af9270 KS |
10665 | /* Construct a physname for the given DIE in CU. NAME may either be |
10666 | from a previous call to dwarf2_name or NULL. The result will be | |
10667 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10668 | name. | |
0114d602 | 10669 | |
9c37b5ae | 10670 | The output string will be canonicalized (if C++). */ |
0114d602 | 10671 | |
94af9270 | 10672 | static const char * |
15d034d0 | 10673 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10674 | { |
5e22e966 | 10675 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10676 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10677 | int need_copy = 1; |
10678 | ||
10679 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10680 | on its own. */ | |
10681 | if (!die_needs_namespace (die, cu)) | |
10682 | return dwarf2_compute_name (name, die, cu, 1); | |
10683 | ||
906bb4c5 TT |
10684 | if (cu->language != language_rust) |
10685 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10686 | |
10687 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10688 | has computed. */ | |
791afaa2 | 10689 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10690 | if (mangled != NULL) |
900e11f9 | 10691 | { |
900e11f9 | 10692 | |
d3355e4d | 10693 | if (language_def (cu->language)->store_sym_names_in_linkage_form_p ()) |
59cc4834 JB |
10694 | { |
10695 | /* Do nothing (do not demangle the symbol name). */ | |
10696 | } | |
a766d390 DE |
10697 | else |
10698 | { | |
0eb876f5 JB |
10699 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10700 | their return type. It is easier for GDB users to search | |
10701 | for such functions as `name(params)' than `long name(params)'. | |
10702 | In such case the minimal symbol names do not match the full | |
10703 | symbol names but for template functions there is never a need | |
10704 | to look up their definition from their declaration so | |
10705 | the only disadvantage remains the minimal symbol variant | |
10706 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10707 | demangled.reset (gdb_demangle (mangled, |
10708 | (DMGL_PARAMS | DMGL_ANSI | |
10709 | | DMGL_RET_DROP))); | |
a766d390 | 10710 | } |
900e11f9 | 10711 | if (demangled) |
791afaa2 | 10712 | canon = demangled.get (); |
900e11f9 JK |
10713 | else |
10714 | { | |
10715 | canon = mangled; | |
10716 | need_copy = 0; | |
10717 | } | |
10718 | } | |
10719 | ||
10720 | if (canon == NULL || check_physname) | |
10721 | { | |
10722 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10723 | ||
10724 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10725 | { | |
10726 | /* It may not mean a bug in GDB. The compiler could also | |
10727 | compute DW_AT_linkage_name incorrectly. But in such case | |
10728 | GDB would need to be bug-to-bug compatible. */ | |
10729 | ||
b98664d3 | 10730 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10731 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10732 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10733 | objfile_name (objfile)); |
900e11f9 JK |
10734 | |
10735 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10736 | is available here - over computed PHYSNAME. It is safer | |
10737 | against both buggy GDB and buggy compilers. */ | |
10738 | ||
10739 | retval = canon; | |
10740 | } | |
10741 | else | |
10742 | { | |
10743 | retval = physname; | |
10744 | need_copy = 0; | |
10745 | } | |
10746 | } | |
10747 | else | |
10748 | retval = canon; | |
10749 | ||
10750 | if (need_copy) | |
be1e3d3e | 10751 | retval = objfile->intern (retval); |
900e11f9 | 10752 | |
900e11f9 | 10753 | return retval; |
0114d602 DJ |
10754 | } |
10755 | ||
74921315 KS |
10756 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10757 | a new symbol for it. | |
10758 | ||
10759 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10760 | ||
10761 | static int | |
10762 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10763 | { | |
10764 | struct attribute *attr; | |
10765 | ||
10766 | /* If the die does not have a name, this is not a namespace | |
10767 | alias. */ | |
10768 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10769 | if (attr != NULL) | |
10770 | { | |
10771 | int num; | |
10772 | struct die_info *d = die; | |
10773 | struct dwarf2_cu *imported_cu = cu; | |
10774 | ||
10775 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10776 | keep inspecting DIEs until we hit the underlying import. */ | |
10777 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10778 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10779 | { | |
10780 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10781 | if (attr == NULL) | |
10782 | break; | |
10783 | ||
10784 | d = follow_die_ref (d, attr, &imported_cu); | |
10785 | if (d->tag != DW_TAG_imported_declaration) | |
10786 | break; | |
10787 | } | |
10788 | ||
10789 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10790 | { | |
b98664d3 | 10791 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10792 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10793 | return 0; |
10794 | } | |
10795 | ||
10796 | if (attr != NULL) | |
10797 | { | |
10798 | struct type *type; | |
0826b30a | 10799 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10800 | |
aa66c379 | 10801 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10802 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10803 | { |
10804 | /* This declaration is a global namespace alias. Add | |
10805 | a symbol for it whose type is the aliased namespace. */ | |
10806 | new_symbol (die, type, cu); | |
10807 | return 1; | |
10808 | } | |
10809 | } | |
10810 | } | |
10811 | ||
10812 | return 0; | |
10813 | } | |
10814 | ||
22cee43f | 10815 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10816 | current context for CU. |
22cee43f PMR |
10817 | |
10818 | For Ada, imported declarations can materialize renamings, which *may* be | |
10819 | global. However it is impossible (for now?) in DWARF to distinguish | |
10820 | "external" imported declarations and "static" ones. As all imported | |
10821 | declarations seem to be static in all other languages, make them all CU-wide | |
10822 | global only in Ada. */ | |
10823 | ||
10824 | static struct using_direct ** | |
804d2729 | 10825 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10826 | { |
c24bdb02 KS |
10827 | if (cu->language == language_ada |
10828 | && cu->get_builder ()->outermost_context_p ()) | |
10829 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10830 | else |
c24bdb02 | 10831 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10832 | } |
10833 | ||
27aa8d6a SW |
10834 | /* Read the import statement specified by the given die and record it. */ |
10835 | ||
10836 | static void | |
10837 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10838 | { | |
5e22e966 | 10839 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10840 | struct attribute *import_attr; |
32019081 | 10841 | struct die_info *imported_die, *child_die; |
de4affc9 | 10842 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10843 | const char *imported_name; |
794684b6 | 10844 | const char *imported_name_prefix; |
13387711 SW |
10845 | const char *canonical_name; |
10846 | const char *import_alias; | |
10847 | const char *imported_declaration = NULL; | |
794684b6 | 10848 | const char *import_prefix; |
eb1e02fd | 10849 | std::vector<const char *> excludes; |
13387711 | 10850 | |
27aa8d6a SW |
10851 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10852 | if (import_attr == NULL) | |
10853 | { | |
b98664d3 | 10854 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10855 | dwarf_tag_name (die->tag)); |
10856 | return; | |
10857 | } | |
10858 | ||
de4affc9 CC |
10859 | imported_cu = cu; |
10860 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10861 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10862 | if (imported_name == NULL) |
10863 | { | |
10864 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10865 | ||
dda83cd7 SM |
10866 | The import in the following code: |
10867 | namespace A | |
10868 | { | |
10869 | typedef int B; | |
10870 | } | |
10871 | ||
10872 | int main () | |
10873 | { | |
10874 | using A::B; | |
10875 | B b; | |
10876 | return b; | |
10877 | } | |
10878 | ||
10879 | ... | |
10880 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10881 | <52> DW_AT_decl_file : 1 | |
10882 | <53> DW_AT_decl_line : 6 | |
10883 | <54> DW_AT_import : <0x75> | |
10884 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10885 | <59> DW_AT_name : B | |
10886 | <5b> DW_AT_decl_file : 1 | |
10887 | <5c> DW_AT_decl_line : 2 | |
10888 | <5d> DW_AT_type : <0x6e> | |
10889 | ... | |
10890 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10891 | <76> DW_AT_byte_size : 4 | |
10892 | <77> DW_AT_encoding : 5 (signed) | |
10893 | ||
10894 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10895 | This case will be ignored until the gcc bug is fixed. */ | |
27aa8d6a SW |
10896 | return; |
10897 | } | |
10898 | ||
82856980 SW |
10899 | /* Figure out the local name after import. */ |
10900 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10901 | |
794684b6 SW |
10902 | /* Figure out where the statement is being imported to. */ |
10903 | import_prefix = determine_prefix (die, cu); | |
10904 | ||
10905 | /* Figure out what the scope of the imported die is and prepend it | |
10906 | to the name of the imported die. */ | |
de4affc9 | 10907 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10908 | |
f55ee35c JK |
10909 | if (imported_die->tag != DW_TAG_namespace |
10910 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10911 | { |
13387711 SW |
10912 | imported_declaration = imported_name; |
10913 | canonical_name = imported_name_prefix; | |
794684b6 | 10914 | } |
13387711 | 10915 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10916 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10917 | imported_name_prefix, |
10918 | (cu->language == language_d ? "." : "::"), | |
10919 | imported_name, (char *) NULL); | |
13387711 SW |
10920 | else |
10921 | canonical_name = imported_name; | |
794684b6 | 10922 | |
32019081 JK |
10923 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10924 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10925 | child_die = child_die->sibling) |
32019081 JK |
10926 | { |
10927 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10928 | represented by an imported module entry with an import attribute | |
10929 | referring to the module and owned entries corresponding to those | |
10930 | entities that are renamed as part of being imported. */ | |
10931 | ||
10932 | if (child_die->tag != DW_TAG_imported_declaration) | |
10933 | { | |
b98664d3 | 10934 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10935 | "- DIE at %s [in module %s]"), |
10936 | sect_offset_str (child_die->sect_off), | |
10937 | objfile_name (objfile)); | |
32019081 JK |
10938 | continue; |
10939 | } | |
10940 | ||
10941 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10942 | if (import_attr == NULL) | |
10943 | { | |
b98664d3 | 10944 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10945 | dwarf_tag_name (child_die->tag)); |
10946 | continue; | |
10947 | } | |
10948 | ||
10949 | imported_cu = cu; | |
10950 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10951 | &imported_cu); | |
10952 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10953 | if (imported_name == NULL) | |
10954 | { | |
b98664d3 | 10955 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10956 | "imported name - DIE at %s [in module %s]"), |
10957 | sect_offset_str (child_die->sect_off), | |
10958 | objfile_name (objfile)); | |
32019081 JK |
10959 | continue; |
10960 | } | |
10961 | ||
eb1e02fd | 10962 | excludes.push_back (imported_name); |
32019081 JK |
10963 | |
10964 | process_die (child_die, cu); | |
10965 | } | |
10966 | ||
804d2729 | 10967 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10968 | import_prefix, |
10969 | canonical_name, | |
10970 | import_alias, | |
10971 | imported_declaration, | |
10972 | excludes, | |
10973 | 0, | |
10974 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10975 | } |
10976 | ||
5230b05a WT |
10977 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10978 | types, but gives them a size of zero. Starting with version 14, | |
10979 | ICC is compatible with GCC. */ | |
10980 | ||
9068261f | 10981 | static bool |
5230b05a WT |
10982 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10983 | { | |
10984 | if (!cu->checked_producer) | |
10985 | check_producer (cu); | |
10986 | ||
10987 | return cu->producer_is_icc_lt_14; | |
10988 | } | |
10989 | ||
eb77c9df AB |
10990 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10991 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10992 | which says that void functions should not have a DW_AT_type. */ | |
10993 | ||
10994 | static bool | |
10995 | producer_is_icc (struct dwarf2_cu *cu) | |
10996 | { | |
10997 | if (!cu->checked_producer) | |
10998 | check_producer (cu); | |
10999 | ||
11000 | return cu->producer_is_icc; | |
11001 | } | |
11002 | ||
1b80a9fa JK |
11003 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11004 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11005 | this, it was first present in GCC release 4.3.0. */ | |
11006 | ||
9068261f | 11007 | static bool |
1b80a9fa JK |
11008 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11009 | { | |
11010 | if (!cu->checked_producer) | |
11011 | check_producer (cu); | |
11012 | ||
11013 | return cu->producer_is_gcc_lt_4_3; | |
11014 | } | |
11015 | ||
d721ba37 PA |
11016 | static file_and_directory |
11017 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11018 | { |
d721ba37 PA |
11019 | file_and_directory res; |
11020 | ||
9291a0cd TT |
11021 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11022 | is not a source language identifier. */ | |
d721ba37 PA |
11023 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11024 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11025 | |
d721ba37 PA |
11026 | if (res.comp_dir == NULL |
11027 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11028 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11029 | { |
d721ba37 PA |
11030 | res.comp_dir_storage = ldirname (res.name); |
11031 | if (!res.comp_dir_storage.empty ()) | |
11032 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11033 | } |
d721ba37 | 11034 | if (res.comp_dir != NULL) |
9291a0cd TT |
11035 | { |
11036 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11037 | directory, get rid of it. */ | |
d721ba37 | 11038 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11039 | |
d721ba37 PA |
11040 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11041 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11042 | } |
11043 | ||
d721ba37 PA |
11044 | if (res.name == NULL) |
11045 | res.name = "<unknown>"; | |
11046 | ||
11047 | return res; | |
9291a0cd TT |
11048 | } |
11049 | ||
f4dc4d17 DE |
11050 | /* Handle DW_AT_stmt_list for a compilation unit. |
11051 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11052 | COMP_DIR is the compilation directory. LOWPC is passed to |
11053 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11054 | |
11055 | static void | |
11056 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11057 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11058 | { |
976ca316 | 11059 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 11060 | struct attribute *attr; |
527f3840 JK |
11061 | struct line_header line_header_local; |
11062 | hashval_t line_header_local_hash; | |
527f3840 JK |
11063 | void **slot; |
11064 | int decode_mapping; | |
2ab95328 | 11065 | |
f4dc4d17 DE |
11066 | gdb_assert (! cu->per_cu->is_debug_types); |
11067 | ||
2ab95328 | 11068 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e | 11069 | if (attr == NULL || !attr->form_is_unsigned ()) |
527f3840 JK |
11070 | return; |
11071 | ||
d4df075e | 11072 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
527f3840 JK |
11073 | |
11074 | /* The line header hash table is only created if needed (it exists to | |
11075 | prevent redundant reading of the line table for partial_units). | |
11076 | If we're given a partial_unit, we'll need it. If we're given a | |
11077 | compile_unit, then use the line header hash table if it's already | |
11078 | created, but don't create one just yet. */ | |
11079 | ||
976ca316 | 11080 | if (per_objfile->line_header_hash == NULL |
527f3840 | 11081 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 11082 | { |
976ca316 | 11083 | per_objfile->line_header_hash |
d15acc42 TT |
11084 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
11085 | line_header_eq_voidp, | |
11086 | free_line_header_voidp, | |
11087 | xcalloc, xfree)); | |
527f3840 | 11088 | } |
2ab95328 | 11089 | |
9c541725 | 11090 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11091 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11092 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 11093 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 11094 | { |
976ca316 | 11095 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11096 | &line_header_local, |
11097 | line_header_local_hash, NO_INSERT); | |
11098 | ||
11099 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11100 | is not present in *SLOT (since if there is something in *SLOT then | |
11101 | it will be for a partial_unit). */ | |
11102 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11103 | { |
527f3840 | 11104 | gdb_assert (*slot != NULL); |
9a3c8263 | 11105 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11106 | return; |
dee91e82 | 11107 | } |
2ab95328 | 11108 | } |
527f3840 JK |
11109 | |
11110 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11111 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11112 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11113 | if (lh == NULL) | |
527f3840 | 11114 | return; |
4c8aa72d PA |
11115 | |
11116 | cu->line_header = lh.release (); | |
11117 | cu->line_header_die_owner = die; | |
527f3840 | 11118 | |
976ca316 | 11119 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
11120 | slot = NULL; |
11121 | else | |
11122 | { | |
976ca316 | 11123 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11124 | &line_header_local, |
11125 | line_header_local_hash, INSERT); | |
11126 | gdb_assert (slot != NULL); | |
11127 | } | |
11128 | if (slot != NULL && *slot == NULL) | |
11129 | { | |
11130 | /* This newly decoded line number information unit will be owned | |
11131 | by line_header_hash hash table. */ | |
11132 | *slot = cu->line_header; | |
4c8aa72d | 11133 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11134 | } |
11135 | else | |
11136 | { | |
11137 | /* We cannot free any current entry in (*slot) as that struct line_header | |
dda83cd7 | 11138 | may be already used by multiple CUs. Create only temporary decoded |
527f3840 JK |
11139 | line_header for this CU - it may happen at most once for each line |
11140 | number information unit. And if we're not using line_header_hash | |
11141 | then this is what we want as well. */ | |
11142 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11143 | } |
11144 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11145 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11146 | decode_mapping); | |
fff8551c | 11147 | |
2ab95328 TT |
11148 | } |
11149 | ||
95554aad | 11150 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11151 | |
c906108c | 11152 | static void |
e7c27a73 | 11153 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11154 | { |
976ca316 SM |
11155 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
11156 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 11157 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 11158 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11159 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11160 | struct attribute *attr; | |
c906108c | 11161 | struct die_info *child_die; |
e142c38c | 11162 | CORE_ADDR baseaddr; |
6e70227d | 11163 | |
380618d6 | 11164 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11165 | baseaddr = objfile->text_section_offset (); |
c906108c | 11166 | |
fae299cd | 11167 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11168 | |
11169 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11170 | from finish_block. */ | |
2acceee2 | 11171 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11172 | lowpc = highpc; |
3e29f34a | 11173 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11174 | |
d721ba37 | 11175 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11176 | |
f4b8a18d KW |
11177 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11178 | standardised yet. As a workaround for the language detection we fall | |
11179 | back to the DW_AT_producer string. */ | |
11180 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11181 | cu->language = language_opencl; | |
11182 | ||
3019eac3 DE |
11183 | /* Similar hack for Go. */ |
11184 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11185 | set_cu_language (DW_LANG_Go, cu); | |
11186 | ||
c24bdb02 | 11187 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11188 | |
11189 | /* Decode line number information if present. We do this before | |
11190 | processing child DIEs, so that the line header table is available | |
11191 | for DW_AT_decl_file. */ | |
d721ba37 | 11192 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11193 | |
11194 | /* Process all dies in compilation unit. */ | |
11195 | if (die->child != NULL) | |
11196 | { | |
11197 | child_die = die->child; | |
11198 | while (child_die && child_die->tag) | |
11199 | { | |
11200 | process_die (child_die, cu); | |
436c571c | 11201 | child_die = child_die->sibling; |
3019eac3 DE |
11202 | } |
11203 | } | |
11204 | ||
11205 | /* Decode macro information, if present. Dwarf 2 macro information | |
11206 | refers to information in the line number info statement program | |
11207 | header, so we can only read it if we've read the header | |
11208 | successfully. */ | |
0af92d60 JK |
11209 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11210 | if (attr == NULL) | |
11211 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
529908cb | 11212 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 DE |
11213 | { |
11214 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11215 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11216 | |
529908cb | 11217 | dwarf_decode_macros (cu, attr->as_unsigned (), 1); |
3019eac3 DE |
11218 | } |
11219 | else | |
11220 | { | |
11221 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
529908cb | 11222 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 | 11223 | { |
529908cb | 11224 | unsigned int macro_offset = attr->as_unsigned (); |
3019eac3 | 11225 | |
43f3e411 | 11226 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11227 | } |
11228 | } | |
3019eac3 DE |
11229 | } |
11230 | ||
c24bdb02 KS |
11231 | void |
11232 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11233 | { |
f4dc4d17 DE |
11234 | struct type_unit_group *tu_group; |
11235 | int first_time; | |
3019eac3 | 11236 | struct attribute *attr; |
9c541725 | 11237 | unsigned int i; |
0186c6a7 | 11238 | struct signatured_type *sig_type; |
3019eac3 | 11239 | |
f4dc4d17 | 11240 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11241 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11242 | |
c24bdb02 | 11243 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11244 | |
f4dc4d17 | 11245 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11246 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11247 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11248 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11249 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11250 | |
11251 | /* If we've already processed this stmt_list there's no real need to | |
11252 | do it again, we could fake it and just recreate the part we need | |
11253 | (file name,index -> symtab mapping). If data shows this optimization | |
11254 | is useful we can do it then. */ | |
8adb8487 TT |
11255 | type_unit_group_unshareable *tug_unshare |
11256 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11257 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11258 | |
11259 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11260 | debug info. */ | |
fff8551c | 11261 | line_header_up lh; |
d4df075e | 11262 | if (attr != NULL && attr->form_is_unsigned ()) |
3019eac3 | 11263 | { |
d4df075e | 11264 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
c24bdb02 | 11265 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11266 | } |
11267 | if (lh == NULL) | |
11268 | { | |
11269 | if (first_time) | |
c24bdb02 | 11270 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11271 | else |
11272 | { | |
8adb8487 | 11273 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11274 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11275 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11276 | m_builder.reset (new struct buildsym_compunit |
11277 | (COMPUNIT_OBJFILE (cust), "", | |
11278 | COMPUNIT_DIRNAME (cust), | |
11279 | compunit_language (cust), | |
11280 | 0, cust)); | |
770479f2 | 11281 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11282 | } |
f4dc4d17 | 11283 | return; |
3019eac3 DE |
11284 | } |
11285 | ||
c24bdb02 KS |
11286 | line_header = lh.release (); |
11287 | line_header_die_owner = die; | |
3019eac3 | 11288 | |
f4dc4d17 DE |
11289 | if (first_time) |
11290 | { | |
c24bdb02 | 11291 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11292 | |
1fd60fc0 DE |
11293 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11294 | still initializing it, and our caller (a few levels up) | |
11295 | process_full_type_unit still needs to know if this is the first | |
11296 | time. */ | |
11297 | ||
8adb8487 | 11298 | tug_unshare->symtabs |
4ac93832 TT |
11299 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11300 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11301 | |
7ba99d21 AT |
11302 | auto &file_names = line_header->file_names (); |
11303 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11304 | { |
7ba99d21 | 11305 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11306 | dwarf2_start_subfile (this, fe.name, |
11307 | fe.include_dir (line_header)); | |
11308 | buildsym_compunit *b = get_builder (); | |
11309 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11310 | { |
4c8aa72d PA |
11311 | /* NOTE: start_subfile will recognize when it's been |
11312 | passed a file it has already seen. So we can't | |
11313 | assume there's a simple mapping from | |
11314 | cu->line_header->file_names to subfiles, plus | |
11315 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11316 | b->get_current_subfile ()->symtab |
11317 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11318 | } |
11319 | ||
c24bdb02 | 11320 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11321 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11322 | } |
11323 | } | |
11324 | else | |
3019eac3 | 11325 | { |
c24bdb02 | 11326 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11327 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11328 | m_builder.reset (new struct buildsym_compunit |
11329 | (COMPUNIT_OBJFILE (cust), "", | |
11330 | COMPUNIT_DIRNAME (cust), | |
11331 | compunit_language (cust), | |
11332 | 0, cust)); | |
770479f2 | 11333 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11334 | |
7ba99d21 AT |
11335 | auto &file_names = line_header->file_names (); |
11336 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11337 | { |
7ba99d21 | 11338 | file_entry &fe = file_names[i]; |
8adb8487 | 11339 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11340 | } |
3019eac3 DE |
11341 | } |
11342 | ||
f4dc4d17 DE |
11343 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11344 | so they don't have a "real" (so to speak) symtab anyway. | |
11345 | There is later code that will assign the main symtab to all symbols | |
11346 | that don't have one. We need to handle the case of a symbol with a | |
11347 | missing symtab (DW_AT_decl_file) anyway. */ | |
11348 | } | |
3019eac3 | 11349 | |
f4dc4d17 DE |
11350 | /* Process DW_TAG_type_unit. |
11351 | For TUs we want to skip the first top level sibling if it's not the | |
11352 | actual type being defined by this TU. In this case the first top | |
11353 | level sibling is there to provide context only. */ | |
3019eac3 | 11354 | |
f4dc4d17 DE |
11355 | static void |
11356 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11357 | { | |
11358 | struct die_info *child_die; | |
3019eac3 | 11359 | |
f4dc4d17 DE |
11360 | prepare_one_comp_unit (cu, die, language_minimal); |
11361 | ||
11362 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11363 | We do this before processing child DIEs, so that the line header table | |
11364 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11365 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11366 | |
11367 | if (die->child != NULL) | |
11368 | { | |
11369 | child_die = die->child; | |
11370 | while (child_die && child_die->tag) | |
11371 | { | |
11372 | process_die (child_die, cu); | |
436c571c | 11373 | child_die = child_die->sibling; |
f4dc4d17 DE |
11374 | } |
11375 | } | |
3019eac3 DE |
11376 | } |
11377 | \f | |
80626a55 DE |
11378 | /* DWO/DWP files. |
11379 | ||
11380 | http://gcc.gnu.org/wiki/DebugFission | |
11381 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11382 | ||
11383 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11384 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11385 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11386 | |
11387 | static hashval_t | |
11388 | hash_dwo_file (const void *item) | |
11389 | { | |
9a3c8263 | 11390 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11391 | hashval_t hash; |
3019eac3 | 11392 | |
a2ce51a0 DE |
11393 | hash = htab_hash_string (dwo_file->dwo_name); |
11394 | if (dwo_file->comp_dir != NULL) | |
11395 | hash += htab_hash_string (dwo_file->comp_dir); | |
11396 | return hash; | |
3019eac3 DE |
11397 | } |
11398 | ||
11399 | static int | |
11400 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11401 | { | |
9a3c8263 SM |
11402 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11403 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11404 | |
a2ce51a0 DE |
11405 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11406 | return 0; | |
11407 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11408 | return lhs->comp_dir == rhs->comp_dir; | |
11409 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11410 | } |
11411 | ||
11412 | /* Allocate a hash table for DWO files. */ | |
11413 | ||
51ac9db5 | 11414 | static htab_up |
298e9637 | 11415 | allocate_dwo_file_hash_table () |
3019eac3 | 11416 | { |
51ac9db5 SM |
11417 | auto delete_dwo_file = [] (void *item) |
11418 | { | |
11419 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11420 | ||
11421 | delete dwo_file; | |
11422 | }; | |
11423 | ||
bc68fb19 TT |
11424 | return htab_up (htab_create_alloc (41, |
11425 | hash_dwo_file, | |
11426 | eq_dwo_file, | |
11427 | delete_dwo_file, | |
11428 | xcalloc, xfree)); | |
3019eac3 DE |
11429 | } |
11430 | ||
80626a55 DE |
11431 | /* Lookup DWO file DWO_NAME. */ |
11432 | ||
11433 | static void ** | |
976ca316 | 11434 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11435 | const char *dwo_name, |
11436 | const char *comp_dir) | |
80626a55 DE |
11437 | { |
11438 | struct dwo_file find_entry; | |
11439 | void **slot; | |
11440 | ||
976ca316 SM |
11441 | if (per_objfile->per_bfd->dwo_files == NULL) |
11442 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11443 | |
0ac5b59e DE |
11444 | find_entry.dwo_name = dwo_name; |
11445 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11446 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11447 | INSERT); |
80626a55 DE |
11448 | |
11449 | return slot; | |
11450 | } | |
11451 | ||
3019eac3 DE |
11452 | static hashval_t |
11453 | hash_dwo_unit (const void *item) | |
11454 | { | |
9a3c8263 | 11455 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11456 | |
11457 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11458 | return dwo_unit->signature; | |
11459 | } | |
11460 | ||
11461 | static int | |
11462 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11463 | { | |
9a3c8263 SM |
11464 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11465 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11466 | |
11467 | /* The signature is assumed to be unique within the DWO file. | |
11468 | So while object file CU dwo_id's always have the value zero, | |
11469 | that's OK, assuming each object file DWO file has only one CU, | |
11470 | and that's the rule for now. */ | |
11471 | return lhs->signature == rhs->signature; | |
11472 | } | |
11473 | ||
11474 | /* Allocate a hash table for DWO CUs,TUs. | |
11475 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11476 | ||
b0b6a987 | 11477 | static htab_up |
298e9637 | 11478 | allocate_dwo_unit_table () |
3019eac3 DE |
11479 | { |
11480 | /* Start out with a pretty small number. | |
11481 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11482 | return htab_up (htab_create_alloc (3, |
11483 | hash_dwo_unit, | |
11484 | eq_dwo_unit, | |
11485 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11486 | } |
11487 | ||
19c3d4c9 | 11488 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11489 | |
11490 | static void | |
19c3d4c9 DE |
11491 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11492 | const gdb_byte *info_ptr, | |
11493 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11494 | struct dwo_file *dwo_file, |
11495 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11496 | { |
11497 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11498 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11499 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11500 | |
a084a2a6 AT |
11501 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11502 | if (!signature.has_value ()) | |
3019eac3 | 11503 | { |
b98664d3 | 11504 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11505 | " its dwo_id [in module %s]"), |
9d8780f0 | 11506 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11507 | return; |
11508 | } | |
11509 | ||
3019eac3 | 11510 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11511 | dwo_unit->signature = *signature; |
8a0459fd | 11512 | dwo_unit->section = section; |
9c541725 | 11513 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11514 | dwo_unit->length = cu->per_cu->length; |
11515 | ||
6f738b01 SM |
11516 | dwarf_read_debug_printf (" offset %s, dwo_id %s", |
11517 | sect_offset_str (sect_off), | |
11518 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
11519 | } |
11520 | ||
33c5cd75 | 11521 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11522 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11523 | |
33c5cd75 | 11524 | static void |
976ca316 | 11525 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11526 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11527 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11528 | { |
976ca316 SM |
11529 | struct objfile *objfile = per_objfile->objfile; |
11530 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11531 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11532 | |
96b79293 | 11533 | section.read (objfile); |
33c5cd75 | 11534 | info_ptr = section.buffer; |
3019eac3 DE |
11535 | |
11536 | if (info_ptr == NULL) | |
33c5cd75 | 11537 | return; |
3019eac3 | 11538 | |
6f738b01 SM |
11539 | dwarf_read_debug_printf ("Reading %s for %s:", |
11540 | section.get_name (), | |
11541 | section.get_file_name ()); | |
3019eac3 | 11542 | |
33c5cd75 | 11543 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11544 | while (info_ptr < end_ptr) |
11545 | { | |
11546 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11547 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11548 | struct dwo_unit *dwo_unit; |
11549 | void **slot; | |
11550 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11551 | |
11552 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11553 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11554 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11555 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11556 | per_cu.section = §ion; | |
11557 | ||
976ca316 | 11558 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11559 | if (!reader.dummy_p) |
11560 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11561 | &dwo_file, &read_unit); |
33c5cd75 DB |
11562 | info_ptr += per_cu.length; |
11563 | ||
11564 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11565 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11566 | continue; |
3019eac3 | 11567 | |
33c5cd75 | 11568 | if (cus_htab == NULL) |
298e9637 | 11569 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11570 | |
1859c670 | 11571 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11572 | struct dwo_unit); |
c0ab21c2 | 11573 | *dwo_unit = read_unit; |
b0b6a987 | 11574 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11575 | gdb_assert (slot != NULL); |
11576 | if (*slot != NULL) | |
19c3d4c9 | 11577 | { |
33c5cd75 DB |
11578 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11579 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11580 | |
b98664d3 | 11581 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11582 | " the entry at offset %s, signature %s"), |
11583 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11584 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11585 | } |
33c5cd75 | 11586 | *slot = (void *)dwo_unit; |
3019eac3 | 11587 | } |
3019eac3 DE |
11588 | } |
11589 | ||
80626a55 DE |
11590 | /* DWP file .debug_{cu,tu}_index section format: |
11591 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
d2854d8d CT |
11592 | [ref: http://dwarfstd.org/doc/DWARF5.pdf, sect 7.3.5 "DWARF Package Files"] |
11593 | ||
11594 | DWP Versions 1 & 2 are older, pre-standard format versions. The first | |
11595 | officially standard DWP format was published with DWARF v5 and is called | |
11596 | Version 5. There are no versions 3 or 4. | |
80626a55 | 11597 | |
d2415c6c DE |
11598 | DWP Version 1: |
11599 | ||
80626a55 DE |
11600 | Both index sections have the same format, and serve to map a 64-bit |
11601 | signature to a set of section numbers. Each section begins with a header, | |
11602 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11603 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11604 | aligned at 8-byte boundaries in the file. | |
11605 | ||
d2415c6c DE |
11606 | The index section header consists of: |
11607 | ||
11608 | V, 32 bit version number | |
11609 | -, 32 bits unused | |
11610 | N, 32 bit number of compilation units or type units in the index | |
11611 | M, 32 bit number of slots in the hash table | |
80626a55 | 11612 | |
d2415c6c | 11613 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11614 | |
d2415c6c DE |
11615 | The hash table begins at offset 16 in the section, and consists of an array |
11616 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11617 | order of the application binary). Unused slots in the hash table are 0. | |
11618 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11619 | |
d2415c6c DE |
11620 | The parallel table begins immediately after the hash table |
11621 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11622 | array of 32-bit indexes (using the byte order of the application binary), | |
11623 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11624 | table contains a 32-bit index into the pool of section numbers. For unused | |
11625 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11626 | |
73869dc2 DE |
11627 | The pool of section numbers begins immediately following the hash table |
11628 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11629 | section numbers consists of an array of 32-bit words (using the byte order | |
11630 | of the application binary). Each item in the array is indexed starting | |
11631 | from 0. The hash table entry provides the index of the first section | |
11632 | number in the set. Additional section numbers in the set follow, and the | |
11633 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11634 | ||
11635 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11636 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11637 | be the second entry. Other members of the set may follow in any order. | |
11638 | ||
11639 | --- | |
11640 | ||
d2854d8d | 11641 | DWP Versions 2 and 5: |
73869dc2 | 11642 | |
d2854d8d | 11643 | DWP Versions 2 and 5 combine all the .debug_info, etc. sections into one, |
73869dc2 DE |
11644 | and the entries in the index tables are now offsets into these sections. |
11645 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11646 | section. | |
11647 | ||
11648 | Index Section Contents: | |
11649 | Header | |
11650 | Hash Table of Signatures dwp_hash_table.hash_table | |
11651 | Parallel Table of Indices dwp_hash_table.unit_table | |
d2854d8d CT |
11652 | Table of Section Offsets dwp_hash_table.{v2|v5}.{section_ids,offsets} |
11653 | Table of Section Sizes dwp_hash_table.{v2|v5}.sizes | |
73869dc2 DE |
11654 | |
11655 | The index section header consists of: | |
11656 | ||
11657 | V, 32 bit version number | |
11658 | L, 32 bit number of columns in the table of section offsets | |
11659 | N, 32 bit number of compilation units or type units in the index | |
11660 | M, 32 bit number of slots in the hash table | |
11661 | ||
11662 | Numbers are recorded using the byte order of the application binary. | |
11663 | ||
11664 | The hash table has the same format as version 1. | |
11665 | The parallel table of indices has the same format as version 1, | |
11666 | except that the entries are origin-1 indices into the table of sections | |
11667 | offsets and the table of section sizes. | |
11668 | ||
11669 | The table of offsets begins immediately following the parallel table | |
11670 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11671 | a two-dimensional array of 32-bit words (using the byte order of the | |
11672 | application binary), with L columns and N+1 rows, in row-major order. | |
11673 | Each row in the array is indexed starting from 0. The first row provides | |
11674 | a key to the remaining rows: each column in this row provides an identifier | |
11675 | for a debug section, and the offsets in the same column of subsequent rows | |
d2854d8d | 11676 | refer to that section. The section identifiers for Version 2 are: |
73869dc2 DE |
11677 | |
11678 | DW_SECT_INFO 1 .debug_info.dwo | |
11679 | DW_SECT_TYPES 2 .debug_types.dwo | |
11680 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11681 | DW_SECT_LINE 4 .debug_line.dwo | |
11682 | DW_SECT_LOC 5 .debug_loc.dwo | |
11683 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11684 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11685 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11686 | ||
d2854d8d CT |
11687 | The section identifiers for Version 5 are: |
11688 | ||
11689 | DW_SECT_INFO_V5 1 .debug_info.dwo | |
11690 | DW_SECT_RESERVED_V5 2 -- | |
11691 | DW_SECT_ABBREV_V5 3 .debug_abbrev.dwo | |
11692 | DW_SECT_LINE_V5 4 .debug_line.dwo | |
11693 | DW_SECT_LOCLISTS_V5 5 .debug_loclists.dwo | |
11694 | DW_SECT_STR_OFFSETS_V5 6 .debug_str_offsets.dwo | |
11695 | DW_SECT_MACRO_V5 7 .debug_macro.dwo | |
11696 | DW_SECT_RNGLISTS_V5 8 .debug_rnglists.dwo | |
11697 | ||
73869dc2 DE |
11698 | The offsets provided by the CU and TU index sections are the base offsets |
11699 | for the contributions made by each CU or TU to the corresponding section | |
11700 | in the package file. Each CU and TU header contains an abbrev_offset | |
11701 | field, used to find the abbreviations table for that CU or TU within the | |
11702 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11703 | be interpreted as relative to the base offset given in the index section. | |
11704 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11705 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11706 | and offsets into other debug sections obtained from DWARF attributes should | |
11707 | also be interpreted as relative to the corresponding base offset. | |
11708 | ||
11709 | The table of sizes begins immediately following the table of offsets. | |
11710 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11711 | with L columns and N rows, in row-major order. Each row in the array is | |
11712 | indexed starting from 1 (row 0 is shared by the two tables). | |
11713 | ||
11714 | --- | |
11715 | ||
11716 | Hash table lookup is handled the same in version 1 and 2: | |
11717 | ||
11718 | We assume that N and M will not exceed 2^32 - 1. | |
11719 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11720 | ||
d2415c6c DE |
11721 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11722 | in the hash table is located as follows: | |
80626a55 | 11723 | |
d2415c6c DE |
11724 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11725 | the low-order k bits all set to 1. | |
80626a55 | 11726 | |
d2415c6c | 11727 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11728 | |
d2415c6c DE |
11729 | 3) If the hash table entry at index H matches the signature, use that |
11730 | entry. If the hash table entry at index H is unused (all zeroes), | |
11731 | terminate the search: the signature is not present in the table. | |
80626a55 | 11732 | |
d2415c6c | 11733 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11734 | |
d2415c6c | 11735 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11736 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11737 | |
11738 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11739 | .debug_{info,types}.dwo in DWP_FILE. | |
11740 | Returns NULL if there isn't one. | |
11741 | Note: This function processes DWP files only, not DWO files. */ | |
11742 | ||
11743 | static struct dwp_hash_table * | |
976ca316 | 11744 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11745 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11746 | { |
976ca316 | 11747 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11748 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11749 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11750 | struct dwarf2_section_info *index; |
73869dc2 | 11751 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11752 | struct dwp_hash_table *htab; |
11753 | ||
11754 | if (is_debug_types) | |
11755 | index = &dwp_file->sections.tu_index; | |
11756 | else | |
11757 | index = &dwp_file->sections.cu_index; | |
11758 | ||
96b79293 | 11759 | if (index->empty ()) |
80626a55 | 11760 | return NULL; |
96b79293 | 11761 | index->read (objfile); |
80626a55 DE |
11762 | |
11763 | index_ptr = index->buffer; | |
11764 | index_end = index_ptr + index->size; | |
11765 | ||
d2854d8d CT |
11766 | /* For Version 5, the version is really 2 bytes of data & 2 bytes of padding. |
11767 | For now it's safe to just read 4 bytes (particularly as it's difficult to | |
11768 | tell if you're dealing with Version 5 before you've read the version). */ | |
80626a55 | 11769 | version = read_4_bytes (dbfd, index_ptr); |
73869dc2 | 11770 | index_ptr += 4; |
d2854d8d | 11771 | if (version == 2 || version == 5) |
73869dc2 DE |
11772 | nr_columns = read_4_bytes (dbfd, index_ptr); |
11773 | else | |
11774 | nr_columns = 0; | |
11775 | index_ptr += 4; | |
80626a55 DE |
11776 | nr_units = read_4_bytes (dbfd, index_ptr); |
11777 | index_ptr += 4; | |
11778 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11779 | index_ptr += 4; | |
11780 | ||
d2854d8d | 11781 | if (version != 1 && version != 2 && version != 5) |
80626a55 | 11782 | { |
21aa081e | 11783 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11784 | " [in module %s]"), |
21aa081e | 11785 | pulongest (version), dwp_file->name); |
80626a55 DE |
11786 | } |
11787 | if (nr_slots != (nr_slots & -nr_slots)) | |
11788 | { | |
21aa081e | 11789 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11790 | " is not power of 2 [in module %s]"), |
21aa081e | 11791 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11792 | } |
11793 | ||
976ca316 | 11794 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11795 | htab->version = version; |
11796 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11797 | htab->nr_units = nr_units; |
11798 | htab->nr_slots = nr_slots; | |
11799 | htab->hash_table = index_ptr; | |
11800 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11801 | |
11802 | /* Exit early if the table is empty. */ | |
11803 | if (nr_slots == 0 || nr_units == 0 | |
d2854d8d CT |
11804 | || (version == 2 && nr_columns == 0) |
11805 | || (version == 5 && nr_columns == 0)) | |
73869dc2 DE |
11806 | { |
11807 | /* All must be zero. */ | |
11808 | if (nr_slots != 0 || nr_units != 0 | |
d2854d8d CT |
11809 | || (version == 2 && nr_columns != 0) |
11810 | || (version == 5 && nr_columns != 0)) | |
73869dc2 | 11811 | { |
b98664d3 | 11812 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11813 | " all zero [in modules %s]"), |
11814 | dwp_file->name); | |
11815 | } | |
11816 | return htab; | |
11817 | } | |
11818 | ||
11819 | if (version == 1) | |
11820 | { | |
11821 | htab->section_pool.v1.indices = | |
11822 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11823 | /* It's harder to decide whether the section is too small in v1. | |
11824 | V1 is deprecated anyway so we punt. */ | |
11825 | } | |
d2854d8d | 11826 | else if (version == 2) |
73869dc2 DE |
11827 | { |
11828 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11829 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11830 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11831 | /* Reverse map for error checking. */ |
11832 | int ids_seen[DW_SECT_MAX + 1]; | |
11833 | int i; | |
11834 | ||
11835 | if (nr_columns < 2) | |
11836 | { | |
11837 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11838 | " in section table [in module %s]"), | |
11839 | dwp_file->name); | |
11840 | } | |
11841 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11842 | { | |
11843 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11844 | " in section table [in module %s]"), | |
11845 | dwp_file->name); | |
11846 | } | |
04fd5eed GB |
11847 | memset (ids, 255, sizeof_ids); |
11848 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11849 | for (i = 0; i < nr_columns; ++i) |
11850 | { | |
11851 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11852 | ||
11853 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11854 | { | |
11855 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11856 | " in section table [in module %s]"), | |
11857 | id, dwp_file->name); | |
11858 | } | |
11859 | if (ids_seen[id] != -1) | |
11860 | { | |
11861 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11862 | " id %d in section table [in module %s]"), | |
11863 | id, dwp_file->name); | |
11864 | } | |
11865 | ids_seen[id] = i; | |
11866 | ids[i] = id; | |
11867 | } | |
11868 | /* Must have exactly one info or types section. */ | |
11869 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11870 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11871 | != 1) | |
11872 | { | |
11873 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11874 | " DWO info/types section [in module %s]"), | |
11875 | dwp_file->name); | |
11876 | } | |
11877 | /* Must have an abbrev section. */ | |
11878 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11879 | { | |
11880 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11881 | " section [in module %s]"), | |
11882 | dwp_file->name); | |
11883 | } | |
11884 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11885 | htab->section_pool.v2.sizes = | |
11886 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11887 | * nr_units * nr_columns); | |
11888 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11889 | * nr_units * nr_columns)) | |
11890 | > index_end) | |
11891 | { | |
11892 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11893 | " [in module %s]"), | |
11894 | dwp_file->name); | |
11895 | } | |
11896 | } | |
d2854d8d CT |
11897 | else /* version == 5 */ |
11898 | { | |
11899 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11900 | int *ids = htab->section_pool.v5.section_ids; | |
11901 | size_t sizeof_ids = sizeof (htab->section_pool.v5.section_ids); | |
11902 | /* Reverse map for error checking. */ | |
11903 | int ids_seen[DW_SECT_MAX_V5 + 1]; | |
11904 | ||
11905 | if (nr_columns < 2) | |
11906 | { | |
11907 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11908 | " in section table [in module %s]"), | |
11909 | dwp_file->name); | |
11910 | } | |
11911 | if (nr_columns > MAX_NR_V5_DWO_SECTIONS) | |
11912 | { | |
11913 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11914 | " in section table [in module %s]"), | |
11915 | dwp_file->name); | |
11916 | } | |
11917 | memset (ids, 255, sizeof_ids); | |
11918 | memset (ids_seen, 255, sizeof (ids_seen)); | |
11919 | for (int i = 0; i < nr_columns; ++i) | |
11920 | { | |
11921 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11922 | ||
11923 | if (id < DW_SECT_MIN || id > DW_SECT_MAX_V5) | |
11924 | { | |
11925 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11926 | " in section table [in module %s]"), | |
11927 | id, dwp_file->name); | |
11928 | } | |
11929 | if (ids_seen[id] != -1) | |
11930 | { | |
11931 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11932 | " id %d in section table [in module %s]"), | |
11933 | id, dwp_file->name); | |
11934 | } | |
11935 | ids_seen[id] = i; | |
11936 | ids[i] = id; | |
11937 | } | |
11938 | /* Must have seen an info section. */ | |
11939 | if (ids_seen[DW_SECT_INFO_V5] == -1) | |
11940 | { | |
11941 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11942 | " DWO info/types section [in module %s]"), | |
11943 | dwp_file->name); | |
11944 | } | |
11945 | /* Must have an abbrev section. */ | |
11946 | if (ids_seen[DW_SECT_ABBREV_V5] == -1) | |
11947 | { | |
11948 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11949 | " section [in module %s]"), | |
11950 | dwp_file->name); | |
11951 | } | |
11952 | htab->section_pool.v5.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11953 | htab->section_pool.v5.sizes | |
11954 | = htab->section_pool.v5.offsets + (sizeof (uint32_t) | |
11955 | * nr_units * nr_columns); | |
11956 | if ((htab->section_pool.v5.sizes + (sizeof (uint32_t) | |
11957 | * nr_units * nr_columns)) | |
11958 | > index_end) | |
11959 | { | |
11960 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11961 | " [in module %s]"), | |
11962 | dwp_file->name); | |
11963 | } | |
11964 | } | |
80626a55 DE |
11965 | |
11966 | return htab; | |
11967 | } | |
11968 | ||
11969 | /* Update SECTIONS with the data from SECTP. | |
11970 | ||
5bb6e9dd TT |
11971 | This function is like the other "locate" section routines, but in |
11972 | this context the sections to read comes from the DWP V1 hash table, | |
11973 | not the full ELF section table. | |
80626a55 DE |
11974 | |
11975 | The result is non-zero for success, or zero if an error was found. */ | |
11976 | ||
11977 | static int | |
73869dc2 DE |
11978 | locate_v1_virtual_dwo_sections (asection *sectp, |
11979 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11980 | { |
11981 | const struct dwop_section_names *names = &dwop_section_names; | |
11982 | ||
fbedd546 | 11983 | if (names->abbrev_dwo.matches (sectp->name)) |
80626a55 DE |
11984 | { |
11985 | /* There can be only one. */ | |
049412e3 | 11986 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11987 | return 0; |
049412e3 | 11988 | sections->abbrev.s.section = sectp; |
fd361982 | 11989 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 | 11990 | } |
fbedd546 TT |
11991 | else if (names->info_dwo.matches (sectp->name) |
11992 | || names->types_dwo.matches (sectp->name)) | |
80626a55 DE |
11993 | { |
11994 | /* There can be only one. */ | |
049412e3 | 11995 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11996 | return 0; |
049412e3 | 11997 | sections->info_or_types.s.section = sectp; |
fd361982 | 11998 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 | 11999 | } |
fbedd546 | 12000 | else if (names->line_dwo.matches (sectp->name)) |
80626a55 DE |
12001 | { |
12002 | /* There can be only one. */ | |
049412e3 | 12003 | if (sections->line.s.section != NULL) |
80626a55 | 12004 | return 0; |
049412e3 | 12005 | sections->line.s.section = sectp; |
fd361982 | 12006 | sections->line.size = bfd_section_size (sectp); |
80626a55 | 12007 | } |
fbedd546 | 12008 | else if (names->loc_dwo.matches (sectp->name)) |
80626a55 DE |
12009 | { |
12010 | /* There can be only one. */ | |
049412e3 | 12011 | if (sections->loc.s.section != NULL) |
80626a55 | 12012 | return 0; |
049412e3 | 12013 | sections->loc.s.section = sectp; |
fd361982 | 12014 | sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12015 | } |
fbedd546 | 12016 | else if (names->macinfo_dwo.matches (sectp->name)) |
80626a55 DE |
12017 | { |
12018 | /* There can be only one. */ | |
049412e3 | 12019 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12020 | return 0; |
049412e3 | 12021 | sections->macinfo.s.section = sectp; |
fd361982 | 12022 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 | 12023 | } |
fbedd546 | 12024 | else if (names->macro_dwo.matches (sectp->name)) |
80626a55 DE |
12025 | { |
12026 | /* There can be only one. */ | |
049412e3 | 12027 | if (sections->macro.s.section != NULL) |
80626a55 | 12028 | return 0; |
049412e3 | 12029 | sections->macro.s.section = sectp; |
fd361982 | 12030 | sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12031 | } |
fbedd546 | 12032 | else if (names->str_offsets_dwo.matches (sectp->name)) |
80626a55 DE |
12033 | { |
12034 | /* There can be only one. */ | |
049412e3 | 12035 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12036 | return 0; |
049412e3 | 12037 | sections->str_offsets.s.section = sectp; |
fd361982 | 12038 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12039 | } |
12040 | else | |
12041 | { | |
12042 | /* No other kind of section is valid. */ | |
12043 | return 0; | |
12044 | } | |
12045 | ||
12046 | return 1; | |
12047 | } | |
12048 | ||
73869dc2 DE |
12049 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12050 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12051 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12052 | This is for DWP version 1 files. */ | |
80626a55 DE |
12053 | |
12054 | static struct dwo_unit * | |
976ca316 | 12055 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12056 | struct dwp_file *dwp_file, |
73869dc2 DE |
12057 | uint32_t unit_index, |
12058 | const char *comp_dir, | |
12059 | ULONGEST signature, int is_debug_types) | |
80626a55 | 12060 | { |
73869dc2 DE |
12061 | const struct dwp_hash_table *dwp_htab = |
12062 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12063 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12064 | const char *kind = is_debug_types ? "TU" : "CU"; |
12065 | struct dwo_file *dwo_file; | |
12066 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12067 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12068 | void **dwo_file_slot; |
80626a55 DE |
12069 | int i; |
12070 | ||
73869dc2 DE |
12071 | gdb_assert (dwp_file->version == 1); |
12072 | ||
6f738b01 SM |
12073 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V1 file: %s", |
12074 | kind, pulongest (unit_index), hex_string (signature), | |
12075 | dwp_file->name); | |
80626a55 | 12076 | |
19ac8c2e | 12077 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12078 | Put a limit on the number of sections we look for so that bad data |
12079 | doesn't cause us to loop forever. */ | |
12080 | ||
73869dc2 | 12081 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12082 | (1 /* .debug_info or .debug_types */ \ |
12083 | + 1 /* .debug_abbrev */ \ | |
12084 | + 1 /* .debug_line */ \ | |
12085 | + 1 /* .debug_loc */ \ | |
12086 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12087 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12088 | + 1 /* trailing zero */) |
12089 | ||
12090 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12091 | |
73869dc2 | 12092 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12093 | { |
12094 | asection *sectp; | |
12095 | uint32_t section_nr = | |
12096 | read_4_bytes (dbfd, | |
73869dc2 DE |
12097 | dwp_htab->section_pool.v1.indices |
12098 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12099 | |
12100 | if (section_nr == 0) | |
12101 | break; | |
12102 | if (section_nr >= dwp_file->num_sections) | |
12103 | { | |
12104 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12105 | " [in module %s]"), | |
12106 | dwp_file->name); | |
12107 | } | |
12108 | ||
12109 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12110 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12111 | { |
12112 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12113 | " [in module %s]"), | |
12114 | dwp_file->name); | |
12115 | } | |
12116 | } | |
12117 | ||
12118 | if (i < 2 | |
96b79293 TT |
12119 | || sections.info_or_types.empty () |
12120 | || sections.abbrev.empty ()) | |
80626a55 DE |
12121 | { |
12122 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12123 | " [in module %s]"), | |
12124 | dwp_file->name); | |
12125 | } | |
73869dc2 | 12126 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12127 | { |
12128 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12129 | " [in module %s]"), | |
12130 | dwp_file->name); | |
12131 | } | |
12132 | ||
12133 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12134 | have dwo_unit "live" in that. At least for now. | |
12135 | ||
12136 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12137 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12138 | file, we can combine them back into a virtual DWO file to save space |
12139 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12140 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12141 | ||
791afaa2 TT |
12142 | std::string virtual_dwo_name = |
12143 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
12144 | sections.abbrev.get_id (), |
12145 | sections.line.get_id (), | |
12146 | sections.loc.get_id (), | |
12147 | sections.str_offsets.get_id ()); | |
80626a55 | 12148 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12149 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12150 | comp_dir); |
80626a55 DE |
12151 | /* Create one if necessary. */ |
12152 | if (*dwo_file_slot == NULL) | |
12153 | { | |
6f738b01 SM |
12154 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12155 | virtual_dwo_name.c_str ()); | |
12156 | ||
51ac9db5 | 12157 | dwo_file = new struct dwo_file; |
976ca316 | 12158 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 12159 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12160 | dwo_file->sections.abbrev = sections.abbrev; |
12161 | dwo_file->sections.line = sections.line; | |
12162 | dwo_file->sections.loc = sections.loc; | |
12163 | dwo_file->sections.macinfo = sections.macinfo; | |
12164 | dwo_file->sections.macro = sections.macro; | |
12165 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12166 | /* The "str" section is global to the entire DWP file. */ | |
12167 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12168 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12169 | there's no need to record it in dwo_file. |
12170 | Also, we can't simply record type sections in dwo_file because | |
12171 | we record a pointer into the vector in dwo_unit. As we collect more | |
12172 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12173 | for it, invalidating all copies of pointers into the previous |
12174 | contents. */ | |
80626a55 DE |
12175 | *dwo_file_slot = dwo_file; |
12176 | } | |
12177 | else | |
12178 | { | |
6f738b01 SM |
12179 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12180 | virtual_dwo_name.c_str ()); | |
12181 | ||
9a3c8263 | 12182 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12183 | } |
80626a55 | 12184 | |
976ca316 | 12185 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
12186 | dwo_unit->dwo_file = dwo_file; |
12187 | dwo_unit->signature = signature; | |
8d749320 | 12188 | dwo_unit->section = |
976ca316 | 12189 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 12190 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12191 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12192 | |
12193 | return dwo_unit; | |
12194 | } | |
12195 | ||
d2854d8d CT |
12196 | /* Subroutine of create_dwo_unit_in_dwp_v2 and create_dwo_unit_in_dwp_v5 to |
12197 | simplify them. Given a pointer to the containing section SECTION, and | |
12198 | OFFSET,SIZE of the piece within that section used by a TU/CU, return a | |
12199 | virtual section of just that piece. */ | |
73869dc2 DE |
12200 | |
12201 | static struct dwarf2_section_info | |
d2854d8d CT |
12202 | create_dwp_v2_or_v5_section (dwarf2_per_objfile *per_objfile, |
12203 | struct dwarf2_section_info *section, | |
12204 | bfd_size_type offset, bfd_size_type size) | |
73869dc2 DE |
12205 | { |
12206 | struct dwarf2_section_info result; | |
12207 | asection *sectp; | |
12208 | ||
12209 | gdb_assert (section != NULL); | |
12210 | gdb_assert (!section->is_virtual); | |
12211 | ||
12212 | memset (&result, 0, sizeof (result)); | |
12213 | result.s.containing_section = section; | |
dc4ccb6f | 12214 | result.is_virtual = true; |
73869dc2 DE |
12215 | |
12216 | if (size == 0) | |
12217 | return result; | |
12218 | ||
96b79293 | 12219 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12220 | |
12221 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12222 | bounds of the real section. This is a pretty-rare event, so just | |
12223 | flag an error (easier) instead of a warning and trying to cope. */ | |
12224 | if (sectp == NULL | |
fd361982 | 12225 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12226 | { |
d2854d8d | 12227 | error (_("Dwarf Error: Bad DWP V2 or V5 section info, doesn't fit" |
73869dc2 | 12228 | " in section %s [in module %s]"), |
fd361982 | 12229 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 12230 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
12231 | } |
12232 | ||
12233 | result.virtual_offset = offset; | |
12234 | result.size = size; | |
12235 | return result; | |
12236 | } | |
12237 | ||
12238 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12239 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12240 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12241 | This is for DWP version 2 files. */ | |
12242 | ||
12243 | static struct dwo_unit * | |
976ca316 | 12244 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12245 | struct dwp_file *dwp_file, |
73869dc2 DE |
12246 | uint32_t unit_index, |
12247 | const char *comp_dir, | |
12248 | ULONGEST signature, int is_debug_types) | |
12249 | { | |
73869dc2 DE |
12250 | const struct dwp_hash_table *dwp_htab = |
12251 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12252 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12253 | const char *kind = is_debug_types ? "TU" : "CU"; |
12254 | struct dwo_file *dwo_file; | |
12255 | struct dwo_unit *dwo_unit; | |
d2854d8d | 12256 | struct virtual_v2_or_v5_dwo_sections sections; |
73869dc2 | 12257 | void **dwo_file_slot; |
73869dc2 DE |
12258 | int i; |
12259 | ||
12260 | gdb_assert (dwp_file->version == 2); | |
12261 | ||
6f738b01 SM |
12262 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V2 file: %s", |
12263 | kind, pulongest (unit_index), hex_string (signature), | |
12264 | dwp_file->name); | |
73869dc2 DE |
12265 | |
12266 | /* Fetch the section offsets of this DWO unit. */ | |
12267 | ||
12268 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12269 | |
12270 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12271 | { | |
12272 | uint32_t offset = read_4_bytes (dbfd, | |
12273 | dwp_htab->section_pool.v2.offsets | |
12274 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12275 | + i) | |
12276 | * sizeof (uint32_t))); | |
12277 | uint32_t size = read_4_bytes (dbfd, | |
12278 | dwp_htab->section_pool.v2.sizes | |
12279 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12280 | + i) | |
12281 | * sizeof (uint32_t))); | |
12282 | ||
12283 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12284 | { | |
12285 | case DW_SECT_INFO: | |
12286 | case DW_SECT_TYPES: | |
12287 | sections.info_or_types_offset = offset; | |
12288 | sections.info_or_types_size = size; | |
12289 | break; | |
12290 | case DW_SECT_ABBREV: | |
12291 | sections.abbrev_offset = offset; | |
12292 | sections.abbrev_size = size; | |
12293 | break; | |
12294 | case DW_SECT_LINE: | |
12295 | sections.line_offset = offset; | |
12296 | sections.line_size = size; | |
12297 | break; | |
12298 | case DW_SECT_LOC: | |
12299 | sections.loc_offset = offset; | |
12300 | sections.loc_size = size; | |
12301 | break; | |
12302 | case DW_SECT_STR_OFFSETS: | |
12303 | sections.str_offsets_offset = offset; | |
12304 | sections.str_offsets_size = size; | |
12305 | break; | |
12306 | case DW_SECT_MACINFO: | |
12307 | sections.macinfo_offset = offset; | |
12308 | sections.macinfo_size = size; | |
12309 | break; | |
12310 | case DW_SECT_MACRO: | |
12311 | sections.macro_offset = offset; | |
12312 | sections.macro_size = size; | |
12313 | break; | |
12314 | } | |
12315 | } | |
12316 | ||
12317 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12318 | have dwo_unit "live" in that. At least for now. | |
12319 | ||
12320 | The DWP file can be made up of a random collection of CUs and TUs. | |
12321 | However, for each CU + set of TUs that came from the same original DWO | |
12322 | file, we can combine them back into a virtual DWO file to save space | |
12323 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12324 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12325 | ||
791afaa2 TT |
12326 | std::string virtual_dwo_name = |
12327 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12328 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12329 | (long) (sections.line_size ? sections.line_offset : 0), | |
12330 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12331 | (long) (sections.str_offsets_size | |
12332 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12333 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12334 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12335 | comp_dir); |
73869dc2 DE |
12336 | /* Create one if necessary. */ |
12337 | if (*dwo_file_slot == NULL) | |
12338 | { | |
6f738b01 SM |
12339 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12340 | virtual_dwo_name.c_str ()); | |
12341 | ||
51ac9db5 | 12342 | dwo_file = new struct dwo_file; |
976ca316 | 12343 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12344 | dwo_file->comp_dir = comp_dir; |
12345 | dwo_file->sections.abbrev = | |
d2854d8d CT |
12346 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.abbrev, |
12347 | sections.abbrev_offset, | |
12348 | sections.abbrev_size); | |
73869dc2 | 12349 | dwo_file->sections.line = |
d2854d8d CT |
12350 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.line, |
12351 | sections.line_offset, | |
12352 | sections.line_size); | |
73869dc2 | 12353 | dwo_file->sections.loc = |
d2854d8d CT |
12354 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.loc, |
12355 | sections.loc_offset, sections.loc_size); | |
73869dc2 | 12356 | dwo_file->sections.macinfo = |
d2854d8d CT |
12357 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macinfo, |
12358 | sections.macinfo_offset, | |
12359 | sections.macinfo_size); | |
73869dc2 | 12360 | dwo_file->sections.macro = |
d2854d8d CT |
12361 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macro, |
12362 | sections.macro_offset, | |
12363 | sections.macro_size); | |
73869dc2 | 12364 | dwo_file->sections.str_offsets = |
d2854d8d CT |
12365 | create_dwp_v2_or_v5_section (per_objfile, |
12366 | &dwp_file->sections.str_offsets, | |
12367 | sections.str_offsets_offset, | |
12368 | sections.str_offsets_size); | |
73869dc2 DE |
12369 | /* The "str" section is global to the entire DWP file. */ |
12370 | dwo_file->sections.str = dwp_file->sections.str; | |
12371 | /* The info or types section is assigned below to dwo_unit, | |
12372 | there's no need to record it in dwo_file. | |
12373 | Also, we can't simply record type sections in dwo_file because | |
12374 | we record a pointer into the vector in dwo_unit. As we collect more | |
12375 | types we'll grow the vector and eventually have to reallocate space | |
12376 | for it, invalidating all copies of pointers into the previous | |
12377 | contents. */ | |
12378 | *dwo_file_slot = dwo_file; | |
12379 | } | |
12380 | else | |
12381 | { | |
6f738b01 SM |
12382 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12383 | virtual_dwo_name.c_str ()); | |
12384 | ||
9a3c8263 | 12385 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12386 | } |
73869dc2 | 12387 | |
976ca316 | 12388 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12389 | dwo_unit->dwo_file = dwo_file; |
12390 | dwo_unit->signature = signature; | |
8d749320 | 12391 | dwo_unit->section = |
976ca316 | 12392 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
d2854d8d | 12393 | *dwo_unit->section = create_dwp_v2_or_v5_section |
dda83cd7 | 12394 | (per_objfile, |
d2854d8d CT |
12395 | is_debug_types |
12396 | ? &dwp_file->sections.types | |
12397 | : &dwp_file->sections.info, | |
12398 | sections.info_or_types_offset, | |
12399 | sections.info_or_types_size); | |
12400 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12401 | ||
12402 | return dwo_unit; | |
12403 | } | |
12404 | ||
12405 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12406 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12407 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12408 | This is for DWP version 5 files. */ | |
12409 | ||
12410 | static struct dwo_unit * | |
12411 | create_dwo_unit_in_dwp_v5 (dwarf2_per_objfile *per_objfile, | |
12412 | struct dwp_file *dwp_file, | |
12413 | uint32_t unit_index, | |
12414 | const char *comp_dir, | |
12415 | ULONGEST signature, int is_debug_types) | |
12416 | { | |
12417 | const struct dwp_hash_table *dwp_htab | |
12418 | = is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12419 | bfd *dbfd = dwp_file->dbfd.get (); | |
12420 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12421 | struct dwo_file *dwo_file; | |
12422 | struct dwo_unit *dwo_unit; | |
12423 | struct virtual_v2_or_v5_dwo_sections sections {}; | |
12424 | void **dwo_file_slot; | |
12425 | ||
12426 | gdb_assert (dwp_file->version == 5); | |
12427 | ||
6f738b01 SM |
12428 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V5 file: %s", |
12429 | kind, pulongest (unit_index), hex_string (signature), | |
12430 | dwp_file->name); | |
d2854d8d CT |
12431 | |
12432 | /* Fetch the section offsets of this DWO unit. */ | |
12433 | ||
12434 | /* memset (§ions, 0, sizeof (sections)); */ | |
12435 | ||
12436 | for (int i = 0; i < dwp_htab->nr_columns; ++i) | |
12437 | { | |
12438 | uint32_t offset = read_4_bytes (dbfd, | |
dda83cd7 SM |
12439 | dwp_htab->section_pool.v5.offsets |
12440 | + (((unit_index - 1) | |
12441 | * dwp_htab->nr_columns | |
12442 | + i) | |
12443 | * sizeof (uint32_t))); | |
d2854d8d | 12444 | uint32_t size = read_4_bytes (dbfd, |
dda83cd7 SM |
12445 | dwp_htab->section_pool.v5.sizes |
12446 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12447 | + i) | |
12448 | * sizeof (uint32_t))); | |
d2854d8d CT |
12449 | |
12450 | switch (dwp_htab->section_pool.v5.section_ids[i]) | |
dda83cd7 SM |
12451 | { |
12452 | case DW_SECT_ABBREV_V5: | |
12453 | sections.abbrev_offset = offset; | |
12454 | sections.abbrev_size = size; | |
12455 | break; | |
12456 | case DW_SECT_INFO_V5: | |
12457 | sections.info_or_types_offset = offset; | |
12458 | sections.info_or_types_size = size; | |
12459 | break; | |
12460 | case DW_SECT_LINE_V5: | |
12461 | sections.line_offset = offset; | |
12462 | sections.line_size = size; | |
12463 | break; | |
12464 | case DW_SECT_LOCLISTS_V5: | |
12465 | sections.loclists_offset = offset; | |
12466 | sections.loclists_size = size; | |
12467 | break; | |
12468 | case DW_SECT_MACRO_V5: | |
12469 | sections.macro_offset = offset; | |
12470 | sections.macro_size = size; | |
12471 | break; | |
12472 | case DW_SECT_RNGLISTS_V5: | |
12473 | sections.rnglists_offset = offset; | |
12474 | sections.rnglists_size = size; | |
12475 | break; | |
12476 | case DW_SECT_STR_OFFSETS_V5: | |
12477 | sections.str_offsets_offset = offset; | |
12478 | sections.str_offsets_size = size; | |
12479 | break; | |
12480 | case DW_SECT_RESERVED_V5: | |
12481 | default: | |
12482 | break; | |
12483 | } | |
d2854d8d CT |
12484 | } |
12485 | ||
12486 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12487 | have dwo_unit "live" in that. At least for now. | |
12488 | ||
12489 | The DWP file can be made up of a random collection of CUs and TUs. | |
12490 | However, for each CU + set of TUs that came from the same original DWO | |
12491 | file, we can combine them back into a virtual DWO file to save space | |
12492 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12493 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12494 | ||
12495 | std::string virtual_dwo_name = | |
12496 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld-%ld-%ld", | |
dda83cd7 SM |
12497 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), |
12498 | (long) (sections.line_size ? sections.line_offset : 0), | |
12499 | (long) (sections.loclists_size ? sections.loclists_offset : 0), | |
12500 | (long) (sections.str_offsets_size | |
12501 | ? sections.str_offsets_offset : 0), | |
12502 | (long) (sections.macro_size ? sections.macro_offset : 0), | |
12503 | (long) (sections.rnglists_size ? sections.rnglists_offset: 0)); | |
d2854d8d CT |
12504 | /* Can we use an existing virtual DWO file? */ |
12505 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, | |
dda83cd7 SM |
12506 | virtual_dwo_name.c_str (), |
12507 | comp_dir); | |
d2854d8d CT |
12508 | /* Create one if necessary. */ |
12509 | if (*dwo_file_slot == NULL) | |
12510 | { | |
6f738b01 SM |
12511 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12512 | virtual_dwo_name.c_str ()); | |
12513 | ||
d2854d8d CT |
12514 | dwo_file = new struct dwo_file; |
12515 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); | |
12516 | dwo_file->comp_dir = comp_dir; | |
12517 | dwo_file->sections.abbrev = | |
dda83cd7 SM |
12518 | create_dwp_v2_or_v5_section (per_objfile, |
12519 | &dwp_file->sections.abbrev, | |
12520 | sections.abbrev_offset, | |
12521 | sections.abbrev_size); | |
d2854d8d | 12522 | dwo_file->sections.line = |
dda83cd7 SM |
12523 | create_dwp_v2_or_v5_section (per_objfile, |
12524 | &dwp_file->sections.line, | |
12525 | sections.line_offset, sections.line_size); | |
d2854d8d | 12526 | dwo_file->sections.macro = |
dda83cd7 SM |
12527 | create_dwp_v2_or_v5_section (per_objfile, |
12528 | &dwp_file->sections.macro, | |
12529 | sections.macro_offset, | |
12530 | sections.macro_size); | |
d2854d8d | 12531 | dwo_file->sections.loclists = |
dda83cd7 SM |
12532 | create_dwp_v2_or_v5_section (per_objfile, |
12533 | &dwp_file->sections.loclists, | |
12534 | sections.loclists_offset, | |
12535 | sections.loclists_size); | |
d2854d8d | 12536 | dwo_file->sections.rnglists = |
dda83cd7 SM |
12537 | create_dwp_v2_or_v5_section (per_objfile, |
12538 | &dwp_file->sections.rnglists, | |
12539 | sections.rnglists_offset, | |
12540 | sections.rnglists_size); | |
d2854d8d | 12541 | dwo_file->sections.str_offsets = |
dda83cd7 SM |
12542 | create_dwp_v2_or_v5_section (per_objfile, |
12543 | &dwp_file->sections.str_offsets, | |
12544 | sections.str_offsets_offset, | |
12545 | sections.str_offsets_size); | |
d2854d8d CT |
12546 | /* The "str" section is global to the entire DWP file. */ |
12547 | dwo_file->sections.str = dwp_file->sections.str; | |
12548 | /* The info or types section is assigned below to dwo_unit, | |
dda83cd7 SM |
12549 | there's no need to record it in dwo_file. |
12550 | Also, we can't simply record type sections in dwo_file because | |
12551 | we record a pointer into the vector in dwo_unit. As we collect more | |
12552 | types we'll grow the vector and eventually have to reallocate space | |
12553 | for it, invalidating all copies of pointers into the previous | |
12554 | contents. */ | |
d2854d8d CT |
12555 | *dwo_file_slot = dwo_file; |
12556 | } | |
12557 | else | |
12558 | { | |
6f738b01 SM |
12559 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12560 | virtual_dwo_name.c_str ()); | |
12561 | ||
d2854d8d CT |
12562 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
12563 | } | |
12564 | ||
12565 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); | |
12566 | dwo_unit->dwo_file = dwo_file; | |
12567 | dwo_unit->signature = signature; | |
12568 | dwo_unit->section | |
12569 | = XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); | |
12570 | *dwo_unit->section = create_dwp_v2_or_v5_section (per_objfile, | |
dda83cd7 SM |
12571 | &dwp_file->sections.info, |
12572 | sections.info_or_types_offset, | |
12573 | sections.info_or_types_size); | |
73869dc2 DE |
12574 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
12575 | ||
12576 | return dwo_unit; | |
12577 | } | |
12578 | ||
57d63ce2 DE |
12579 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12580 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12581 | |
12582 | static struct dwo_unit * | |
976ca316 | 12583 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12584 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12585 | ULONGEST signature, int is_debug_types) |
80626a55 | 12586 | { |
57d63ce2 DE |
12587 | const struct dwp_hash_table *dwp_htab = |
12588 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12589 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12590 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12591 | uint32_t hash = signature & mask; |
12592 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12593 | unsigned int i; | |
12594 | void **slot; | |
870f88f7 | 12595 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12596 | |
12597 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12598 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12599 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12600 | ? dwp_file->loaded_tus.get () |
12601 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12602 | &find_dwo_cu, INSERT); |
80626a55 DE |
12603 | |
12604 | if (*slot != NULL) | |
9a3c8263 | 12605 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12606 | |
12607 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12608 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12609 | { |
12610 | ULONGEST signature_in_table; | |
12611 | ||
12612 | signature_in_table = | |
57d63ce2 | 12613 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12614 | if (signature_in_table == signature) |
12615 | { | |
57d63ce2 DE |
12616 | uint32_t unit_index = |
12617 | read_4_bytes (dbfd, | |
12618 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12619 | |
73869dc2 DE |
12620 | if (dwp_file->version == 1) |
12621 | { | |
976ca316 SM |
12622 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12623 | unit_index, comp_dir, | |
12624 | signature, is_debug_types); | |
73869dc2 | 12625 | } |
d2854d8d | 12626 | else if (dwp_file->version == 2) |
73869dc2 | 12627 | { |
976ca316 SM |
12628 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12629 | unit_index, comp_dir, | |
12630 | signature, is_debug_types); | |
73869dc2 | 12631 | } |
d2854d8d CT |
12632 | else /* version == 5 */ |
12633 | { | |
12634 | *slot = create_dwo_unit_in_dwp_v5 (per_objfile, dwp_file, | |
12635 | unit_index, comp_dir, | |
12636 | signature, is_debug_types); | |
12637 | } | |
9a3c8263 | 12638 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12639 | } |
12640 | if (signature_in_table == 0) | |
12641 | return NULL; | |
12642 | hash = (hash + hash2) & mask; | |
12643 | } | |
12644 | ||
12645 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12646 | " [in module %s]"), | |
12647 | dwp_file->name); | |
12648 | } | |
12649 | ||
ab5088bf | 12650 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12651 | Open the file specified by FILE_NAME and hand it off to BFD for |
12652 | preliminary analysis. Return a newly initialized bfd *, which | |
12653 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12654 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12655 | SEARCH_CWD is true if the current directory is to be searched. |
12656 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12657 | If successful, the file is added to the bfd include table of the |
12658 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12659 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12660 | NOTE: This function is derived from symfile_bfd_open. */ |
12661 | ||
192b62ce | 12662 | static gdb_bfd_ref_ptr |
976ca316 | 12663 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12664 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12665 | { |
24b9144d | 12666 | int desc; |
9c02c129 DE |
12667 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12668 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12669 | to debug_file_directory. */ | |
e0cc99a6 | 12670 | const char *search_path; |
9c02c129 DE |
12671 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12672 | ||
e0cc99a6 | 12673 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12674 | if (search_cwd) |
12675 | { | |
12676 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12677 | { |
12678 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12679 | debug_file_directory, | |
12680 | (char *) NULL)); | |
12681 | search_path = search_path_holder.get (); | |
12682 | } | |
6ac97d4c | 12683 | else |
e0cc99a6 | 12684 | search_path = "."; |
6ac97d4c | 12685 | } |
9c02c129 | 12686 | else |
e0cc99a6 | 12687 | search_path = debug_file_directory; |
3019eac3 | 12688 | |
24b9144d | 12689 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12690 | if (is_dwp) |
12691 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12692 | |
12693 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12694 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12695 | O_RDONLY | O_BINARY, &absolute_name); |
12696 | if (desc < 0) | |
12697 | return NULL; | |
12698 | ||
e0cc99a6 TT |
12699 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12700 | gnutarget, desc)); | |
9c02c129 DE |
12701 | if (sym_bfd == NULL) |
12702 | return NULL; | |
192b62ce | 12703 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12704 | |
192b62ce TT |
12705 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12706 | return NULL; | |
3019eac3 | 12707 | |
13aaf454 DE |
12708 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12709 | This is important because things like demangled_names_hash lives in the | |
12710 | objfile's per_bfd space and may have references to things like symbol | |
12711 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12712 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12713 | |
3019eac3 DE |
12714 | return sym_bfd; |
12715 | } | |
12716 | ||
ab5088bf | 12717 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12718 | COMP_DIR is the DW_AT_comp_dir attribute. |
12719 | The result is the bfd handle of the file. | |
12720 | If there is a problem finding or opening the file, return NULL. | |
12721 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12722 | same as symfile_bfd_open. */ | |
12723 | ||
192b62ce | 12724 | static gdb_bfd_ref_ptr |
976ca316 | 12725 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12726 | const char *file_name, const char *comp_dir) |
3019eac3 | 12727 | { |
80626a55 | 12728 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12729 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12730 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12731 | |
12732 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12733 | ||
12734 | if (comp_dir != NULL) | |
12735 | { | |
43816ebc TT |
12736 | gdb::unique_xmalloc_ptr<char> path_to_try |
12737 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12738 | |
12739 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12740 | search path, which seems useful. */ | |
976ca316 | 12741 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12742 | 0 /*is_dwp*/, |
192b62ce | 12743 | 1 /*search_cwd*/)); |
3019eac3 DE |
12744 | if (abfd != NULL) |
12745 | return abfd; | |
12746 | } | |
12747 | ||
12748 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12749 | is a list of paths. */ | |
12750 | ||
12751 | if (*debug_file_directory == '\0') | |
12752 | return NULL; | |
12753 | ||
976ca316 | 12754 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12755 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12756 | } |
12757 | ||
80626a55 DE |
12758 | /* This function is mapped across the sections and remembers the offset and |
12759 | size of each of the DWO debugging sections we are interested in. */ | |
12760 | ||
12761 | static void | |
5bb6e9dd TT |
12762 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, |
12763 | dwo_sections *dwo_sections) | |
80626a55 | 12764 | { |
80626a55 DE |
12765 | const struct dwop_section_names *names = &dwop_section_names; |
12766 | ||
fbedd546 | 12767 | if (names->abbrev_dwo.matches (sectp->name)) |
80626a55 | 12768 | { |
049412e3 | 12769 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12770 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 | 12771 | } |
fbedd546 | 12772 | else if (names->info_dwo.matches (sectp->name)) |
80626a55 | 12773 | { |
049412e3 | 12774 | dwo_sections->info.s.section = sectp; |
fd361982 | 12775 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 | 12776 | } |
fbedd546 | 12777 | else if (names->line_dwo.matches (sectp->name)) |
80626a55 | 12778 | { |
049412e3 | 12779 | dwo_sections->line.s.section = sectp; |
fd361982 | 12780 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 | 12781 | } |
fbedd546 | 12782 | else if (names->loc_dwo.matches (sectp->name)) |
80626a55 | 12783 | { |
049412e3 | 12784 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12785 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12786 | } |
fbedd546 | 12787 | else if (names->loclists_dwo.matches (sectp->name)) |
41144253 | 12788 | { |
12789 | dwo_sections->loclists.s.section = sectp; | |
12790 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12791 | } | |
fbedd546 | 12792 | else if (names->macinfo_dwo.matches (sectp->name)) |
80626a55 | 12793 | { |
049412e3 | 12794 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12795 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 | 12796 | } |
fbedd546 | 12797 | else if (names->macro_dwo.matches (sectp->name)) |
80626a55 | 12798 | { |
049412e3 | 12799 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12800 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12801 | } |
fbedd546 | 12802 | else if (names->rnglists_dwo.matches (sectp->name)) |
d0ce17d8 CT |
12803 | { |
12804 | dwo_sections->rnglists.s.section = sectp; | |
12805 | dwo_sections->rnglists.size = bfd_section_size (sectp); | |
12806 | } | |
fbedd546 | 12807 | else if (names->str_dwo.matches (sectp->name)) |
80626a55 | 12808 | { |
049412e3 | 12809 | dwo_sections->str.s.section = sectp; |
fd361982 | 12810 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 | 12811 | } |
fbedd546 | 12812 | else if (names->str_offsets_dwo.matches (sectp->name)) |
80626a55 | 12813 | { |
049412e3 | 12814 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12815 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 | 12816 | } |
fbedd546 | 12817 | else if (names->types_dwo.matches (sectp->name)) |
80626a55 DE |
12818 | { |
12819 | struct dwarf2_section_info type_section; | |
12820 | ||
12821 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12822 | type_section.s.section = sectp; |
fd361982 | 12823 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12824 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12825 | } |
12826 | } | |
12827 | ||
ab5088bf | 12828 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12829 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12830 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12831 | |
12832 | static struct dwo_file * | |
4ab09049 SM |
12833 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12834 | const char *comp_dir) | |
3019eac3 | 12835 | { |
976ca316 | 12836 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12837 | |
976ca316 | 12838 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12839 | if (dbfd == NULL) |
12840 | { | |
6f738b01 SM |
12841 | dwarf_read_debug_printf ("DWO file not found: %s", dwo_name); |
12842 | ||
80626a55 DE |
12843 | return NULL; |
12844 | } | |
263db9a1 | 12845 | |
51ac9db5 | 12846 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12847 | dwo_file->dwo_name = dwo_name; |
12848 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12849 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12850 | |
5bb6e9dd TT |
12851 | for (asection *sec : gdb_bfd_sections (dwo_file->dbfd)) |
12852 | dwarf2_locate_dwo_sections (dwo_file->dbfd.get (), sec, | |
12853 | &dwo_file->sections); | |
3019eac3 | 12854 | |
976ca316 SM |
12855 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12856 | dwo_file->cus); | |
3019eac3 | 12857 | |
d2854d8d CT |
12858 | if (cu->per_cu->dwarf_version < 5) |
12859 | { | |
12860 | create_debug_types_hash_table (per_objfile, dwo_file.get (), | |
12861 | dwo_file->sections.types, dwo_file->tus); | |
12862 | } | |
12863 | else | |
12864 | { | |
12865 | create_debug_type_hash_table (per_objfile, dwo_file.get (), | |
12866 | &dwo_file->sections.info, dwo_file->tus, | |
30c80d88 | 12867 | rcuh_kind::COMPILE); |
d2854d8d | 12868 | } |
3019eac3 | 12869 | |
6f738b01 | 12870 | dwarf_read_debug_printf ("DWO file found: %s", dwo_name); |
80626a55 | 12871 | |
263db9a1 | 12872 | return dwo_file.release (); |
3019eac3 DE |
12873 | } |
12874 | ||
80626a55 | 12875 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12876 | size of each of the DWP debugging sections common to version 1 and 2 that |
12877 | we are interested in. */ | |
3019eac3 | 12878 | |
80626a55 | 12879 | static void |
73869dc2 | 12880 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
5bb6e9dd | 12881 | dwp_file *dwp_file) |
3019eac3 | 12882 | { |
80626a55 DE |
12883 | const struct dwop_section_names *names = &dwop_section_names; |
12884 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12885 | |
80626a55 | 12886 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12887 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12888 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12889 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12890 | |
80626a55 | 12891 | /* Look for specific sections that we need. */ |
fbedd546 | 12892 | if (names->str_dwo.matches (sectp->name)) |
80626a55 | 12893 | { |
049412e3 | 12894 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12895 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 | 12896 | } |
fbedd546 | 12897 | else if (names->cu_index.matches (sectp->name)) |
80626a55 | 12898 | { |
049412e3 | 12899 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12900 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 | 12901 | } |
fbedd546 | 12902 | else if (names->tu_index.matches (sectp->name)) |
80626a55 | 12903 | { |
049412e3 | 12904 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12905 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12906 | } |
12907 | } | |
3019eac3 | 12908 | |
73869dc2 DE |
12909 | /* This function is mapped across the sections and remembers the offset and |
12910 | size of each of the DWP version 2 debugging sections that we are interested | |
12911 | in. This is split into a separate function because we don't know if we | |
d2854d8d | 12912 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ |
73869dc2 DE |
12913 | |
12914 | static void | |
12915 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12916 | { | |
9a3c8263 | 12917 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12918 | const struct dwop_section_names *names = &dwop_section_names; |
12919 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12920 | ||
12921 | /* Record the ELF section number for later lookup: this is what the | |
12922 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12923 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12924 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12925 | ||
12926 | /* Look for specific sections that we need. */ | |
fbedd546 | 12927 | if (names->abbrev_dwo.matches (sectp->name)) |
73869dc2 | 12928 | { |
049412e3 | 12929 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12930 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 | 12931 | } |
fbedd546 | 12932 | else if (names->info_dwo.matches (sectp->name)) |
73869dc2 | 12933 | { |
049412e3 | 12934 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12935 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 | 12936 | } |
fbedd546 | 12937 | else if (names->line_dwo.matches (sectp->name)) |
73869dc2 | 12938 | { |
049412e3 | 12939 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12940 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 | 12941 | } |
fbedd546 | 12942 | else if (names->loc_dwo.matches (sectp->name)) |
73869dc2 | 12943 | { |
049412e3 | 12944 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12945 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 | 12946 | } |
fbedd546 | 12947 | else if (names->macinfo_dwo.matches (sectp->name)) |
73869dc2 | 12948 | { |
049412e3 | 12949 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12950 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 | 12951 | } |
fbedd546 | 12952 | else if (names->macro_dwo.matches (sectp->name)) |
73869dc2 | 12953 | { |
049412e3 | 12954 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12955 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 | 12956 | } |
fbedd546 | 12957 | else if (names->str_offsets_dwo.matches (sectp->name)) |
73869dc2 | 12958 | { |
049412e3 | 12959 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12960 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 | 12961 | } |
fbedd546 | 12962 | else if (names->types_dwo.matches (sectp->name)) |
73869dc2 | 12963 | { |
049412e3 | 12964 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12965 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12966 | } |
12967 | } | |
12968 | ||
d2854d8d CT |
12969 | /* This function is mapped across the sections and remembers the offset and |
12970 | size of each of the DWP version 5 debugging sections that we are interested | |
12971 | in. This is split into a separate function because we don't know if we | |
12972 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ | |
12973 | ||
12974 | static void | |
12975 | dwarf2_locate_v5_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12976 | { | |
12977 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; | |
12978 | const struct dwop_section_names *names = &dwop_section_names; | |
12979 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12980 | ||
12981 | /* Record the ELF section number for later lookup: this is what the | |
12982 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12983 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12984 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12985 | ||
12986 | /* Look for specific sections that we need. */ | |
fbedd546 | 12987 | if (names->abbrev_dwo.matches (sectp->name)) |
d2854d8d CT |
12988 | { |
12989 | dwp_file->sections.abbrev.s.section = sectp; | |
12990 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); | |
12991 | } | |
fbedd546 | 12992 | else if (names->info_dwo.matches (sectp->name)) |
d2854d8d CT |
12993 | { |
12994 | dwp_file->sections.info.s.section = sectp; | |
12995 | dwp_file->sections.info.size = bfd_section_size (sectp); | |
12996 | } | |
fbedd546 | 12997 | else if (names->line_dwo.matches (sectp->name)) |
d2854d8d CT |
12998 | { |
12999 | dwp_file->sections.line.s.section = sectp; | |
13000 | dwp_file->sections.line.size = bfd_section_size (sectp); | |
13001 | } | |
fbedd546 | 13002 | else if (names->loclists_dwo.matches (sectp->name)) |
d2854d8d CT |
13003 | { |
13004 | dwp_file->sections.loclists.s.section = sectp; | |
13005 | dwp_file->sections.loclists.size = bfd_section_size (sectp); | |
13006 | } | |
fbedd546 | 13007 | else if (names->macro_dwo.matches (sectp->name)) |
d2854d8d CT |
13008 | { |
13009 | dwp_file->sections.macro.s.section = sectp; | |
13010 | dwp_file->sections.macro.size = bfd_section_size (sectp); | |
13011 | } | |
fbedd546 | 13012 | else if (names->rnglists_dwo.matches (sectp->name)) |
d2854d8d CT |
13013 | { |
13014 | dwp_file->sections.rnglists.s.section = sectp; | |
13015 | dwp_file->sections.rnglists.size = bfd_section_size (sectp); | |
13016 | } | |
fbedd546 | 13017 | else if (names->str_offsets_dwo.matches (sectp->name)) |
d2854d8d CT |
13018 | { |
13019 | dwp_file->sections.str_offsets.s.section = sectp; | |
13020 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); | |
13021 | } | |
13022 | } | |
13023 | ||
80626a55 | 13024 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13025 | |
80626a55 DE |
13026 | static hashval_t |
13027 | hash_dwp_loaded_cutus (const void *item) | |
13028 | { | |
9a3c8263 | 13029 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13030 | |
80626a55 DE |
13031 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13032 | return dwo_unit->signature; | |
3019eac3 DE |
13033 | } |
13034 | ||
80626a55 | 13035 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13036 | |
80626a55 DE |
13037 | static int |
13038 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13039 | { |
9a3c8263 SM |
13040 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13041 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13042 | |
80626a55 DE |
13043 | return dua->signature == dub->signature; |
13044 | } | |
3019eac3 | 13045 | |
80626a55 | 13046 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13047 | |
48b490f2 | 13048 | static htab_up |
298e9637 | 13049 | allocate_dwp_loaded_cutus_table () |
80626a55 | 13050 | { |
48b490f2 TT |
13051 | return htab_up (htab_create_alloc (3, |
13052 | hash_dwp_loaded_cutus, | |
13053 | eq_dwp_loaded_cutus, | |
13054 | NULL, xcalloc, xfree)); | |
80626a55 | 13055 | } |
3019eac3 | 13056 | |
ab5088bf DE |
13057 | /* Try to open DWP file FILE_NAME. |
13058 | The result is the bfd handle of the file. | |
13059 | If there is a problem finding or opening the file, return NULL. | |
13060 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13061 | same as symfile_bfd_open. */ | |
13062 | ||
192b62ce | 13063 | static gdb_bfd_ref_ptr |
976ca316 | 13064 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 13065 | { |
976ca316 | 13066 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 13067 | 1 /*is_dwp*/, |
192b62ce | 13068 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13069 | if (abfd != NULL) |
13070 | return abfd; | |
13071 | ||
13072 | /* Work around upstream bug 15652. | |
13073 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13074 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13075 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13076 | of the executable's path may have discarded the needed info. | |
13077 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13078 | .gnu_debuglink, but that doesn't exist yet.] | |
13079 | Strip the directory from FILE_NAME and search again. */ | |
13080 | if (*debug_file_directory != '\0') | |
13081 | { | |
13082 | /* Don't implicitly search the current directory here. | |
13083 | If the user wants to search "." to handle this case, | |
13084 | it must be added to debug-file-directory. */ | |
976ca316 SM |
13085 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
13086 | 1 /*is_dwp*/, | |
6ac97d4c DE |
13087 | 0 /*search_cwd*/); |
13088 | } | |
13089 | ||
13090 | return NULL; | |
ab5088bf DE |
13091 | } |
13092 | ||
80626a55 DE |
13093 | /* Initialize the use of the DWP file for the current objfile. |
13094 | By convention the name of the DWP file is ${objfile}.dwp. | |
13095 | The result is NULL if it can't be found. */ | |
a766d390 | 13096 | |
400174b1 | 13097 | static std::unique_ptr<struct dwp_file> |
976ca316 | 13098 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 13099 | { |
976ca316 | 13100 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 13101 | |
82bf32bc JK |
13102 | /* Try to find first .dwp for the binary file before any symbolic links |
13103 | resolving. */ | |
6c447423 DE |
13104 | |
13105 | /* If the objfile is a debug file, find the name of the real binary | |
13106 | file and get the name of dwp file from there. */ | |
d721ba37 | 13107 | std::string dwp_name; |
6c447423 DE |
13108 | if (objfile->separate_debug_objfile_backlink != NULL) |
13109 | { | |
13110 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13111 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13112 | |
d721ba37 | 13113 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13114 | } |
13115 | else | |
d721ba37 PA |
13116 | dwp_name = objfile->original_name; |
13117 | ||
13118 | dwp_name += ".dwp"; | |
80626a55 | 13119 | |
976ca316 | 13120 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13121 | if (dbfd == NULL |
13122 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13123 | { | |
13124 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13125 | dwp_name = objfile_name (objfile); |
13126 | dwp_name += ".dwp"; | |
976ca316 | 13127 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13128 | } |
13129 | ||
80626a55 DE |
13130 | if (dbfd == NULL) |
13131 | { | |
6f738b01 SM |
13132 | dwarf_read_debug_printf ("DWP file not found: %s", dwp_name.c_str ()); |
13133 | ||
400174b1 | 13134 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13135 | } |
400174b1 TT |
13136 | |
13137 | const char *name = bfd_get_filename (dbfd.get ()); | |
13138 | std::unique_ptr<struct dwp_file> dwp_file | |
13139 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13140 | |
0a0f4c01 | 13141 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 13142 | dwp_file->elf_sections = |
976ca316 | 13143 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
13144 | dwp_file->num_sections, asection *); |
13145 | ||
5bb6e9dd TT |
13146 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13147 | dwarf2_locate_common_dwp_sections (dwp_file->dbfd.get (), sec, | |
13148 | dwp_file.get ()); | |
80626a55 | 13149 | |
976ca316 | 13150 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 13151 | |
976ca316 | 13152 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 13153 | |
73869dc2 | 13154 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13155 | if (dwp_file->cus && dwp_file->tus |
13156 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13157 | { |
13158 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13159 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13160 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13161 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13162 | " TU version %s [in DWP file %s]"), | |
13163 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13164 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13165 | } |
08302ed2 DE |
13166 | |
13167 | if (dwp_file->cus) | |
13168 | dwp_file->version = dwp_file->cus->version; | |
13169 | else if (dwp_file->tus) | |
13170 | dwp_file->version = dwp_file->tus->version; | |
13171 | else | |
13172 | dwp_file->version = 2; | |
73869dc2 | 13173 | |
5bb6e9dd TT |
13174 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13175 | { | |
13176 | if (dwp_file->version == 2) | |
13177 | dwarf2_locate_v2_dwp_sections (dwp_file->dbfd.get (), sec, | |
13178 | dwp_file.get ()); | |
13179 | else | |
13180 | dwarf2_locate_v5_dwp_sections (dwp_file->dbfd.get (), sec, | |
13181 | dwp_file.get ()); | |
13182 | } | |
73869dc2 | 13183 | |
298e9637 SM |
13184 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
13185 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 13186 | |
6f738b01 SM |
13187 | dwarf_read_debug_printf ("DWP file found: %s", dwp_file->name); |
13188 | dwarf_read_debug_printf (" %s CUs, %s TUs", | |
13189 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13190 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13191 | |
13192 | return dwp_file; | |
3019eac3 | 13193 | } |
c906108c | 13194 | |
ab5088bf DE |
13195 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13196 | ||
13197 | static struct dwp_file * | |
976ca316 | 13198 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 13199 | { |
976ca316 | 13200 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 13201 | { |
976ca316 SM |
13202 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
13203 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 13204 | } |
976ca316 | 13205 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
13206 | } |
13207 | ||
80626a55 DE |
13208 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13209 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13210 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13211 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13212 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13213 | ||
13214 | This is called, for example, when wanting to read a variable with a | |
13215 | complex location. Therefore we don't want to do file i/o for every call. | |
13216 | Therefore we don't want to look for a DWO file on every call. | |
13217 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13218 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13219 | for a DWO file. | |
13220 | ||
1c658ad5 | 13221 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13222 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13223 | |
3019eac3 | 13224 | static struct dwo_unit * |
4ab09049 | 13225 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 13226 | ULONGEST signature, int is_debug_types) |
3019eac3 | 13227 | { |
976ca316 SM |
13228 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13229 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
13230 | const char *kind = is_debug_types ? "TU" : "CU"; |
13231 | void **dwo_file_slot; | |
3019eac3 | 13232 | struct dwo_file *dwo_file; |
80626a55 | 13233 | struct dwp_file *dwp_file; |
cb1df416 | 13234 | |
6a506a2d DE |
13235 | /* First see if there's a DWP file. |
13236 | If we have a DWP file but didn't find the DWO inside it, don't | |
13237 | look for the original DWO file. It makes gdb behave differently | |
13238 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13239 | |
976ca316 | 13240 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 13241 | if (dwp_file != NULL) |
cf2c3c16 | 13242 | { |
80626a55 DE |
13243 | const struct dwp_hash_table *dwp_htab = |
13244 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13245 | ||
13246 | if (dwp_htab != NULL) | |
13247 | { | |
13248 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
13249 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
13250 | is_debug_types); | |
80626a55 DE |
13251 | |
13252 | if (dwo_cutu != NULL) | |
13253 | { | |
6f738b01 SM |
13254 | dwarf_read_debug_printf ("Virtual DWO %s %s found: @%s", |
13255 | kind, hex_string (signature), | |
13256 | host_address_to_string (dwo_cutu)); | |
13257 | ||
80626a55 DE |
13258 | return dwo_cutu; |
13259 | } | |
13260 | } | |
13261 | } | |
6a506a2d | 13262 | else |
80626a55 | 13263 | { |
6a506a2d | 13264 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13265 | |
976ca316 | 13266 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 13267 | if (*dwo_file_slot == NULL) |
80626a55 | 13268 | { |
6a506a2d | 13269 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 13270 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 13271 | } |
6a506a2d | 13272 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13273 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13274 | |
6a506a2d | 13275 | if (dwo_file != NULL) |
19c3d4c9 | 13276 | { |
6a506a2d DE |
13277 | struct dwo_unit *dwo_cutu = NULL; |
13278 | ||
13279 | if (is_debug_types && dwo_file->tus) | |
13280 | { | |
13281 | struct dwo_unit find_dwo_cutu; | |
13282 | ||
13283 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13284 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 13285 | dwo_cutu |
b0b6a987 TT |
13286 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
13287 | &find_dwo_cutu); | |
6a506a2d | 13288 | } |
33c5cd75 | 13289 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13290 | { |
33c5cd75 DB |
13291 | struct dwo_unit find_dwo_cutu; |
13292 | ||
13293 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13294 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 13295 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 13296 | &find_dwo_cutu); |
6a506a2d DE |
13297 | } |
13298 | ||
13299 | if (dwo_cutu != NULL) | |
13300 | { | |
6f738b01 SM |
13301 | dwarf_read_debug_printf ("DWO %s %s(%s) found: @%s", |
13302 | kind, dwo_name, hex_string (signature), | |
13303 | host_address_to_string (dwo_cutu)); | |
13304 | ||
6a506a2d | 13305 | return dwo_cutu; |
80626a55 DE |
13306 | } |
13307 | } | |
2e276125 | 13308 | } |
9cdd5dbd | 13309 | |
80626a55 DE |
13310 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13311 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13312 | correctly to find the file. */ | |
13313 | ||
6f738b01 SM |
13314 | dwarf_read_debug_printf ("DWO %s %s(%s) not found", |
13315 | kind, dwo_name, hex_string (signature)); | |
3019eac3 | 13316 | |
6656a72d DE |
13317 | /* This is a warning and not a complaint because it can be caused by |
13318 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13319 | { |
13320 | /* Print the name of the DWP file if we looked there, helps the user | |
13321 | better diagnose the problem. */ | |
791afaa2 | 13322 | std::string dwp_text; |
43942612 DE |
13323 | |
13324 | if (dwp_file != NULL) | |
791afaa2 TT |
13325 | dwp_text = string_printf (" [in DWP file %s]", |
13326 | lbasename (dwp_file->name)); | |
43942612 | 13327 | |
9d8780f0 | 13328 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 13329 | " [in module %s]"), |
4ab09049 SM |
13330 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
13331 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 13332 | } |
3019eac3 | 13333 | return NULL; |
5fb290d7 DJ |
13334 | } |
13335 | ||
80626a55 DE |
13336 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13337 | See lookup_dwo_cutu_unit for details. */ | |
13338 | ||
13339 | static struct dwo_unit * | |
4ab09049 | 13340 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
13341 | ULONGEST signature) |
13342 | { | |
4ab09049 SM |
13343 | gdb_assert (!cu->per_cu->is_debug_types); |
13344 | ||
13345 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
13346 | } |
13347 | ||
13348 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13349 | See lookup_dwo_cutu_unit for details. */ | |
13350 | ||
13351 | static struct dwo_unit * | |
4ab09049 | 13352 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 13353 | { |
4ab09049 SM |
13354 | gdb_assert (cu->per_cu->is_debug_types); |
13355 | ||
13356 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
13357 | ||
13358 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
13359 | } |
13360 | ||
89e63ee4 DE |
13361 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13362 | ||
13363 | static int | |
13364 | queue_and_load_dwo_tu (void **slot, void *info) | |
13365 | { | |
13366 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 13367 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 13368 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 13369 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
13370 | |
13371 | if (sig_type != NULL) | |
13372 | { | |
13373 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13374 | ||
13375 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13376 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13377 | while processing PER_CU. */ | |
120ce1b5 | 13378 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
13379 | load_full_type_unit (sig_cu, cu->per_objfile); |
13380 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
13381 | } |
13382 | ||
13383 | return 1; | |
13384 | } | |
13385 | ||
1b555f17 | 13386 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
13387 | The DWO may have the only definition of the type, though it may not be |
13388 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13389 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13390 | ||
13391 | static void | |
1b555f17 | 13392 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
13393 | { |
13394 | struct dwo_unit *dwo_unit; | |
13395 | struct dwo_file *dwo_file; | |
13396 | ||
1b555f17 SM |
13397 | gdb_assert (cu != nullptr); |
13398 | gdb_assert (!cu->per_cu->is_debug_types); | |
13399 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 13400 | |
1b555f17 | 13401 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
13402 | gdb_assert (dwo_unit != NULL); |
13403 | ||
13404 | dwo_file = dwo_unit->dwo_file; | |
13405 | if (dwo_file->tus != NULL) | |
1b555f17 | 13406 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
13407 | } |
13408 | ||
3019eac3 | 13409 | /* Read in various DIEs. */ |
348e048f | 13410 | |
d389af10 | 13411 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13412 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13413 | already referenced by DW_AT_abstract_origin from the children of the | |
13414 | current DIE. */ | |
d389af10 JK |
13415 | |
13416 | static void | |
13417 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13418 | { | |
13419 | struct die_info *child_die; | |
791afaa2 | 13420 | sect_offset *offsetp; |
d389af10 JK |
13421 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13422 | struct die_info *origin_die; | |
13423 | /* Iterator of the ORIGIN_DIE children. */ | |
13424 | struct die_info *origin_child_die; | |
d389af10 | 13425 | struct attribute *attr; |
cd02d79d PA |
13426 | struct dwarf2_cu *origin_cu; |
13427 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13428 | |
13429 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13430 | if (!attr) | |
13431 | return; | |
13432 | ||
cd02d79d PA |
13433 | /* Note that following die references may follow to a die in a |
13434 | different cu. */ | |
13435 | ||
13436 | origin_cu = cu; | |
13437 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13438 | ||
13439 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13440 | symbols in. */ | |
13441 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13442 | origin_cu->list_in_scope = cu->list_in_scope; | |
13443 | ||
edb3359d DJ |
13444 | if (die->tag != origin_die->tag |
13445 | && !(die->tag == DW_TAG_inlined_subroutine | |
13446 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13447 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13448 | sect_offset_str (die->sect_off), |
13449 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13450 | |
791afaa2 | 13451 | std::vector<sect_offset> offsets; |
d389af10 | 13452 | |
3ea89b92 PMR |
13453 | for (child_die = die->child; |
13454 | child_die && child_die->tag; | |
436c571c | 13455 | child_die = child_die->sibling) |
3ea89b92 PMR |
13456 | { |
13457 | struct die_info *child_origin_die; | |
13458 | struct dwarf2_cu *child_origin_cu; | |
13459 | ||
13460 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13461 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13462 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13463 | present in the abstract instance but not referenced in the concrete | |
13464 | one. */ | |
216f72a1 | 13465 | if (child_die->tag == DW_TAG_call_site |
dda83cd7 | 13466 | || child_die->tag == DW_TAG_GNU_call_site) |
3ea89b92 PMR |
13467 | continue; |
13468 | ||
c38f313d DJ |
13469 | /* For each CHILD_DIE, find the corresponding child of |
13470 | ORIGIN_DIE. If there is more than one layer of | |
13471 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13472 | but GCC versions at least through 4.4 generate this (GCC PR | |
13473 | 40573). */ | |
3ea89b92 PMR |
13474 | child_origin_die = child_die; |
13475 | child_origin_cu = cu; | |
c38f313d DJ |
13476 | while (1) |
13477 | { | |
cd02d79d PA |
13478 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13479 | child_origin_cu); | |
c38f313d DJ |
13480 | if (attr == NULL) |
13481 | break; | |
cd02d79d PA |
13482 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13483 | &child_origin_cu); | |
c38f313d DJ |
13484 | } |
13485 | ||
d389af10 JK |
13486 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13487 | counterpart may exist. */ | |
c38f313d | 13488 | if (child_origin_die != child_die) |
d389af10 | 13489 | { |
edb3359d DJ |
13490 | if (child_die->tag != child_origin_die->tag |
13491 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13492 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13493 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13494 | "different tags"), |
9d8780f0 SM |
13495 | sect_offset_str (child_die->sect_off), |
13496 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13497 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13498 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13499 | "different parents"), |
9d8780f0 SM |
13500 | sect_offset_str (child_die->sect_off), |
13501 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13502 | else |
791afaa2 | 13503 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13504 | } |
d389af10 | 13505 | } |
791afaa2 TT |
13506 | std::sort (offsets.begin (), offsets.end ()); |
13507 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13508 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13509 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13510 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13511 | "to DIE %s as their abstract origin"), |
13512 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13513 | |
791afaa2 | 13514 | offsetp = offsets.data (); |
d389af10 JK |
13515 | origin_child_die = origin_die->child; |
13516 | while (origin_child_die && origin_child_die->tag) | |
13517 | { | |
13518 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13519 | while (offsetp < offsets_end |
9c541725 | 13520 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13521 | offsetp++; |
b64f50a1 | 13522 | if (offsetp >= offsets_end |
9c541725 | 13523 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13524 | { |
adde2bff DE |
13525 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13526 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13527 | This can happen with mutually referenced abstract_origins. | |
13528 | PR 16581. */ | |
13529 | if (!origin_child_die->in_process) | |
13530 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13531 | } |
436c571c | 13532 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13533 | } |
cd02d79d | 13534 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13535 | |
13536 | if (cu != origin_cu) | |
13537 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13538 | } |
13539 | ||
c906108c | 13540 | static void |
e7c27a73 | 13541 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13542 | { |
5e22e966 | 13543 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13544 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13545 | struct context_stack *newobj; |
c906108c SS |
13546 | CORE_ADDR lowpc; |
13547 | CORE_ADDR highpc; | |
13548 | struct die_info *child_die; | |
edb3359d | 13549 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13550 | const char *name; |
e142c38c | 13551 | CORE_ADDR baseaddr; |
801e3a5b | 13552 | struct block *block; |
edb3359d | 13553 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13554 | std::vector<struct symbol *> template_args; |
34eaf542 | 13555 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13556 | |
13557 | if (inlined_func) | |
13558 | { | |
13559 | /* If we do not have call site information, we can't show the | |
13560 | caller of this inlined function. That's too confusing, so | |
13561 | only use the scope for local variables. */ | |
13562 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13563 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13564 | if (call_line == NULL || call_file == NULL) | |
13565 | { | |
13566 | read_lexical_block_scope (die, cu); | |
13567 | return; | |
13568 | } | |
13569 | } | |
c906108c | 13570 | |
b3b3bada | 13571 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13572 | |
94af9270 | 13573 | name = dwarf2_name (die, cu); |
c906108c | 13574 | |
e8d05480 JB |
13575 | /* Ignore functions with missing or empty names. These are actually |
13576 | illegal according to the DWARF standard. */ | |
13577 | if (name == NULL) | |
13578 | { | |
b98664d3 | 13579 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13580 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13581 | return; |
13582 | } | |
13583 | ||
13584 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13585 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13586 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13587 | { |
ae4d0c03 | 13588 | attr = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 13589 | if (attr == nullptr || !attr->as_boolean ()) |
b98664d3 | 13590 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13591 | "for subprogram DIE at %s"), |
13592 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13593 | return; |
13594 | } | |
c906108c | 13595 | |
3e29f34a MR |
13596 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13597 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13598 | |
34eaf542 TT |
13599 | /* If we have any template arguments, then we must allocate a |
13600 | different sort of symbol. */ | |
436c571c | 13601 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13602 | { |
13603 | if (child_die->tag == DW_TAG_template_type_param | |
13604 | || child_die->tag == DW_TAG_template_value_param) | |
13605 | { | |
8c14c3a3 | 13606 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13607 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13608 | break; |
13609 | } | |
13610 | } | |
13611 | ||
c24bdb02 | 13612 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13613 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13614 | (struct symbol *) templ_func); | |
4c2df51b | 13615 | |
81873cc8 | 13616 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13617 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13618 | cu->language); |
13619 | ||
4cecd739 DJ |
13620 | /* If there is a location expression for DW_AT_frame_base, record |
13621 | it. */ | |
e142c38c | 13622 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13623 | if (attr != nullptr) |
fe978cb0 | 13624 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13625 | |
63e43d3a PMR |
13626 | /* If there is a location for the static link, record it. */ |
13627 | newobj->static_link = NULL; | |
13628 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13629 | if (attr != nullptr) |
63e43d3a | 13630 | { |
224c3ddb SM |
13631 | newobj->static_link |
13632 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13633 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13634 | cu->addr_type ()); |
63e43d3a PMR |
13635 | } |
13636 | ||
c24bdb02 | 13637 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13638 | |
639d11d3 | 13639 | if (die->child != NULL) |
c906108c | 13640 | { |
639d11d3 | 13641 | child_die = die->child; |
c906108c SS |
13642 | while (child_die && child_die->tag) |
13643 | { | |
34eaf542 TT |
13644 | if (child_die->tag == DW_TAG_template_type_param |
13645 | || child_die->tag == DW_TAG_template_value_param) | |
13646 | { | |
13647 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13648 | ||
f1078f66 | 13649 | if (arg != NULL) |
2f4732b0 | 13650 | template_args.push_back (arg); |
34eaf542 TT |
13651 | } |
13652 | else | |
13653 | process_die (child_die, cu); | |
436c571c | 13654 | child_die = child_die->sibling; |
c906108c SS |
13655 | } |
13656 | } | |
13657 | ||
d389af10 JK |
13658 | inherit_abstract_dies (die, cu); |
13659 | ||
4a811a97 UW |
13660 | /* If we have a DW_AT_specification, we might need to import using |
13661 | directives from the context of the specification DIE. See the | |
13662 | comment in determine_prefix. */ | |
13663 | if (cu->language == language_cplus | |
13664 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13665 | { | |
13666 | struct dwarf2_cu *spec_cu = cu; | |
13667 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13668 | ||
13669 | while (spec_die) | |
13670 | { | |
13671 | child_die = spec_die->child; | |
13672 | while (child_die && child_die->tag) | |
13673 | { | |
13674 | if (child_die->tag == DW_TAG_imported_module) | |
13675 | process_die (child_die, spec_cu); | |
436c571c | 13676 | child_die = child_die->sibling; |
4a811a97 UW |
13677 | } |
13678 | ||
13679 | /* In some cases, GCC generates specification DIEs that | |
13680 | themselves contain DW_AT_specification attributes. */ | |
13681 | spec_die = die_specification (spec_die, &spec_cu); | |
13682 | } | |
13683 | } | |
13684 | ||
c24bdb02 | 13685 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13686 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13687 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13688 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13689 | |
df8a16a1 | 13690 | /* For C++, set the block's scope. */ |
45280282 IB |
13691 | if ((cu->language == language_cplus |
13692 | || cu->language == language_fortran | |
c44af4eb TT |
13693 | || cu->language == language_d |
13694 | || cu->language == language_rust) | |
4d4ec4e5 | 13695 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13696 | block_set_scope (block, determine_prefix (die, cu), |
13697 | &objfile->objfile_obstack); | |
df8a16a1 | 13698 | |
801e3a5b JB |
13699 | /* If we have address ranges, record them. */ |
13700 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13701 | |
a60f3166 | 13702 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13703 | |
34eaf542 | 13704 | /* Attach template arguments to function. */ |
2f4732b0 | 13705 | if (!template_args.empty ()) |
34eaf542 TT |
13706 | { |
13707 | gdb_assert (templ_func != NULL); | |
13708 | ||
2f4732b0 | 13709 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13710 | templ_func->template_arguments |
dda83cd7 | 13711 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
8d749320 | 13712 | templ_func->n_template_arguments); |
34eaf542 | 13713 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13714 | template_args.data (), |
34eaf542 | 13715 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13716 | |
13717 | /* Make sure that the symtab is set on the new symbols. Even | |
13718 | though they don't appear in this symtab directly, other parts | |
13719 | of gdb assume that symbols do, and this is reasonably | |
13720 | true. */ | |
8634679f | 13721 | for (symbol *sym : template_args) |
3e1d3d8c | 13722 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13723 | } |
13724 | ||
208d8187 JB |
13725 | /* In C++, we can have functions nested inside functions (e.g., when |
13726 | a function declares a class that has methods). This means that | |
13727 | when we finish processing a function scope, we may need to go | |
13728 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13729 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13730 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13731 | |
921e78cf JB |
13732 | /* If we've finished processing a top-level function, subsequent |
13733 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13734 | if (cu->get_builder ()->outermost_context_p ()) |
13735 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13736 | } |
13737 | ||
13738 | /* Process all the DIES contained within a lexical block scope. Start | |
13739 | a new scope, process the dies, and then close the scope. */ | |
13740 | ||
13741 | static void | |
e7c27a73 | 13742 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13743 | { |
5e22e966 | 13744 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13745 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13746 | CORE_ADDR lowpc, highpc; |
13747 | struct die_info *child_die; | |
e142c38c DJ |
13748 | CORE_ADDR baseaddr; |
13749 | ||
b3b3bada | 13750 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13751 | |
13752 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13753 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13754 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13755 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13756 | describe ranges. */ |
e385593e JK |
13757 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13758 | { | |
13759 | case PC_BOUNDS_NOT_PRESENT: | |
13760 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13761 | there was no wrapping by that DW_TAG_lexical_block. | |
13762 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13763 | for (child_die = die->child; | |
13764 | child_die != NULL && child_die->tag; | |
436c571c | 13765 | child_die = child_die->sibling) |
4f7bc5ed TT |
13766 | { |
13767 | /* We might already be processing this DIE. This can happen | |
13768 | in an unusual circumstance -- where a subroutine A | |
13769 | appears lexically in another subroutine B, but A actually | |
13770 | inlines B. The recursion is broken here, rather than in | |
13771 | inherit_abstract_dies, because it seems better to simply | |
13772 | drop concrete children here. */ | |
13773 | if (!child_die->in_process) | |
13774 | process_die (child_die, cu); | |
13775 | } | |
e385593e JK |
13776 | return; |
13777 | case PC_BOUNDS_INVALID: | |
13778 | return; | |
13779 | } | |
3e29f34a MR |
13780 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13781 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13782 | |
c24bdb02 | 13783 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13784 | if (die->child != NULL) |
c906108c | 13785 | { |
639d11d3 | 13786 | child_die = die->child; |
c906108c SS |
13787 | while (child_die && child_die->tag) |
13788 | { | |
e7c27a73 | 13789 | process_die (child_die, cu); |
436c571c | 13790 | child_die = child_die->sibling; |
c906108c SS |
13791 | } |
13792 | } | |
3ea89b92 | 13793 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13794 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13795 | |
c24bdb02 KS |
13796 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13797 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13798 | { |
801e3a5b | 13799 | struct block *block |
dda83cd7 | 13800 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13801 | cstk.start_addr, highpc); |
801e3a5b JB |
13802 | |
13803 | /* Note that recording ranges after traversing children, as we | |
dda83cd7 SM |
13804 | do here, means that recording a parent's ranges entails |
13805 | walking across all its children's ranges as they appear in | |
13806 | the address map, which is quadratic behavior. | |
13807 | ||
13808 | It would be nicer to record the parent's ranges before | |
13809 | traversing its children, simply overriding whatever you find | |
13810 | there. But since we don't even decide whether to create a | |
13811 | block until after we've traversed its children, that's hard | |
13812 | to do. */ | |
801e3a5b | 13813 | dwarf2_record_block_ranges (die, block, baseaddr, cu); |
c906108c | 13814 | } |
c24bdb02 KS |
13815 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13816 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13817 | } |
13818 | ||
216f72a1 | 13819 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13820 | |
13821 | static void | |
13822 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13823 | { | |
5e22e966 | 13824 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13825 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13826 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13827 | CORE_ADDR pc, baseaddr; |
13828 | struct attribute *attr; | |
13829 | struct call_site *call_site, call_site_local; | |
13830 | void **slot; | |
13831 | int nparams; | |
13832 | struct die_info *child_die; | |
13833 | ||
b3b3bada | 13834 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13835 | |
216f72a1 JK |
13836 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13837 | if (attr == NULL) | |
13838 | { | |
13839 | /* This was a pre-DWARF-5 GNU extension alias | |
13840 | for DW_AT_call_return_pc. */ | |
13841 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13842 | } | |
96408a79 SA |
13843 | if (!attr) |
13844 | { | |
b98664d3 | 13845 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13846 | "DIE %s [in module %s]"), |
13847 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13848 | return; |
13849 | } | |
95f982e5 | 13850 | pc = attr->as_address () + baseaddr; |
3e29f34a | 13851 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13852 | |
13853 | if (cu->call_site_htab == NULL) | |
13854 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13855 | NULL, &objfile->objfile_obstack, | |
13856 | hashtab_obstack_allocate, NULL); | |
13857 | call_site_local.pc = pc; | |
13858 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13859 | if (*slot != NULL) | |
13860 | { | |
b98664d3 | 13861 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13862 | "DIE %s [in module %s]"), |
13863 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13864 | objfile_name (objfile)); |
96408a79 SA |
13865 | return; |
13866 | } | |
13867 | ||
13868 | /* Count parameters at the caller. */ | |
13869 | ||
13870 | nparams = 0; | |
13871 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13872 | child_die = child_die->sibling) |
96408a79 | 13873 | { |
216f72a1 | 13874 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13875 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 | 13876 | { |
b98664d3 | 13877 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13878 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13879 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13880 | objfile_name (objfile)); |
96408a79 SA |
13881 | continue; |
13882 | } | |
13883 | ||
13884 | nparams++; | |
13885 | } | |
13886 | ||
224c3ddb SM |
13887 | call_site |
13888 | = ((struct call_site *) | |
13889 | obstack_alloc (&objfile->objfile_obstack, | |
13890 | sizeof (*call_site) | |
13891 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13892 | *slot = call_site; |
13893 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13894 | call_site->pc = pc; | |
13895 | ||
216f72a1 JK |
13896 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13897 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13898 | { |
13899 | struct die_info *func_die; | |
13900 | ||
13901 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13902 | for (func_die = die->parent; | |
13903 | func_die && func_die->tag != DW_TAG_subprogram | |
13904 | && func_die->tag != DW_TAG_subroutine_type; | |
13905 | func_die = func_die->parent); | |
13906 | ||
216f72a1 JK |
13907 | /* DW_AT_call_all_calls is a superset |
13908 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13909 | if (func_die |
dda83cd7 SM |
13910 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
13911 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
216f72a1 | 13912 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13913 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13914 | { | |
13915 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13916 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13917 | both the initial caller containing the real return address PC and | |
13918 | the final callee containing the current PC of a chain of tail | |
13919 | calls do not need to have the tail call list complete. But any | |
13920 | function candidate for a virtual tail call frame searched via | |
13921 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13922 | determined unambiguously. */ | |
13923 | } | |
13924 | else | |
13925 | { | |
13926 | struct type *func_type = NULL; | |
13927 | ||
13928 | if (func_die) | |
13929 | func_type = get_die_type (func_die, cu); | |
13930 | if (func_type != NULL) | |
13931 | { | |
78134374 | 13932 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13933 | |
13934 | /* Enlist this call site to the function. */ | |
13935 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13936 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13937 | } | |
13938 | else | |
b98664d3 | 13939 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13940 | "DIE %s [in module %s]"), |
13941 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13942 | } |
13943 | } | |
13944 | ||
216f72a1 JK |
13945 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13946 | if (attr == NULL) | |
13947 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13948 | if (attr == NULL) | |
13949 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13950 | if (attr == NULL) |
216f72a1 JK |
13951 | { |
13952 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13953 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13954 | } | |
96408a79 | 13955 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
9d2246fc | 13956 | if (!attr || (attr->form_is_block () && attr->as_block ()->size == 0)) |
96408a79 | 13957 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13958 | else if (attr->form_is_block ()) |
96408a79 SA |
13959 | { |
13960 | struct dwarf2_locexpr_baton *dlbaton; | |
9d2246fc | 13961 | struct dwarf_block *block = attr->as_block (); |
96408a79 | 13962 | |
8d749320 | 13963 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
9d2246fc TT |
13964 | dlbaton->data = block->data; |
13965 | dlbaton->size = block->size; | |
a50264ba | 13966 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13967 | dlbaton->per_cu = cu->per_cu; |
13968 | ||
13969 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13970 | } | |
cd6c91b4 | 13971 | else if (attr->form_is_ref ()) |
96408a79 | 13972 | { |
96408a79 SA |
13973 | struct dwarf2_cu *target_cu = cu; |
13974 | struct die_info *target_die; | |
13975 | ||
ac9ec31b | 13976 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13977 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13978 | if (die_is_declaration (target_die, target_cu)) |
13979 | { | |
7d45c7c3 | 13980 | const char *target_physname; |
9112db09 JK |
13981 | |
13982 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13983 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13984 | if (target_physname == NULL) |
9112db09 | 13985 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13986 | if (target_physname == NULL) |
b98664d3 | 13987 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 13988 | "physname, for referencing DIE %s [in module %s]"), |
9d8780f0 | 13989 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 13990 | else |
7d455152 | 13991 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13992 | } |
13993 | else | |
13994 | { | |
13995 | CORE_ADDR lowpc; | |
13996 | ||
13997 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13998 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13999 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14000 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 14001 | "low pc, for referencing DIE %s [in module %s]"), |
9d8780f0 | 14002 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 14003 | else |
3e29f34a MR |
14004 | { |
14005 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14006 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14007 | } | |
96408a79 SA |
14008 | } |
14009 | } | |
14010 | else | |
b98664d3 | 14011 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14012 | "block nor reference, for DIE %s [in module %s]"), |
14013 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14014 | |
14015 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 14016 | call_site->per_objfile = per_objfile; |
96408a79 SA |
14017 | |
14018 | for (child_die = die->child; | |
14019 | child_die && child_die->tag; | |
436c571c | 14020 | child_die = child_die->sibling) |
96408a79 | 14021 | { |
96408a79 | 14022 | struct call_site_parameter *parameter; |
1788b2d3 | 14023 | struct attribute *loc, *origin; |
96408a79 | 14024 | |
216f72a1 | 14025 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 14026 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 SA |
14027 | { |
14028 | /* Already printed the complaint above. */ | |
14029 | continue; | |
14030 | } | |
14031 | ||
14032 | gdb_assert (call_site->parameter_count < nparams); | |
14033 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14034 | ||
1788b2d3 JK |
14035 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14036 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14037 | register is contained in DW_AT_call_value. */ |
96408a79 | 14038 | |
24c5c679 | 14039 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14040 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14041 | if (origin == NULL) | |
14042 | { | |
14043 | /* This was a pre-DWARF-5 GNU extension alias | |
14044 | for DW_AT_call_parameter. */ | |
14045 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14046 | } | |
cd6c91b4 | 14047 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 14048 | { |
1788b2d3 | 14049 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 14050 | |
0826b30a | 14051 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 14052 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
14053 | { |
14054 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14055 | binding can be done only inside one CU. Such referenced DIE | |
14056 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14057 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14058 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14059 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14060 | objfile_name (objfile)); |
d76b7dbc JK |
14061 | continue; |
14062 | } | |
9c541725 PA |
14063 | parameter->u.param_cu_off |
14064 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 14065 | } |
4fc6c0d5 | 14066 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 14067 | { |
b98664d3 | 14068 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14069 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14070 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14071 | continue; |
14072 | } | |
24c5c679 | 14073 | else |
96408a79 | 14074 | { |
9d2246fc TT |
14075 | struct dwarf_block *block = loc->as_block (); |
14076 | ||
24c5c679 | 14077 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9d2246fc | 14078 | (block->data, &block->data[block->size]); |
24c5c679 JK |
14079 | if (parameter->u.dwarf_reg != -1) |
14080 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9d2246fc TT |
14081 | else if (dwarf_block_to_sp_offset (gdbarch, block->data, |
14082 | &block->data[block->size], | |
24c5c679 JK |
14083 | ¶meter->u.fb_offset)) |
14084 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14085 | else | |
14086 | { | |
b98664d3 | 14087 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14088 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14089 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14090 | "[in module %s]"), |
9d8780f0 | 14091 | sect_offset_str (child_die->sect_off), |
9c541725 | 14092 | objfile_name (objfile)); |
24c5c679 JK |
14093 | continue; |
14094 | } | |
96408a79 SA |
14095 | } |
14096 | ||
216f72a1 JK |
14097 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14098 | if (attr == NULL) | |
14099 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 14100 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 14101 | { |
b98664d3 | 14102 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14103 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14104 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14105 | objfile_name (objfile)); |
96408a79 SA |
14106 | continue; |
14107 | } | |
9d2246fc TT |
14108 | |
14109 | struct dwarf_block *block = attr->as_block (); | |
14110 | parameter->value = block->data; | |
14111 | parameter->value_size = block->size; | |
96408a79 SA |
14112 | |
14113 | /* Parameters are not pre-cleared by memset above. */ | |
14114 | parameter->data_value = NULL; | |
14115 | parameter->data_value_size = 0; | |
14116 | call_site->parameter_count++; | |
14117 | ||
216f72a1 JK |
14118 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14119 | if (attr == NULL) | |
14120 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 14121 | if (attr != nullptr) |
96408a79 | 14122 | { |
4fc6c0d5 | 14123 | if (!attr->form_is_block ()) |
b98664d3 | 14124 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14125 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14126 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14127 | objfile_name (objfile)); |
96408a79 SA |
14128 | else |
14129 | { | |
9d2246fc TT |
14130 | block = attr->as_block (); |
14131 | parameter->data_value = block->data; | |
14132 | parameter->data_value_size = block->size; | |
96408a79 SA |
14133 | } |
14134 | } | |
14135 | } | |
14136 | } | |
14137 | ||
71a3c369 TT |
14138 | /* Helper function for read_variable. If DIE represents a virtual |
14139 | table, then return the type of the concrete object that is | |
14140 | associated with the virtual table. Otherwise, return NULL. */ | |
14141 | ||
14142 | static struct type * | |
14143 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14144 | { | |
14145 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14146 | if (attr == NULL) | |
14147 | return NULL; | |
14148 | ||
14149 | /* Find the type DIE. */ | |
14150 | struct die_info *type_die = NULL; | |
14151 | struct dwarf2_cu *type_cu = cu; | |
14152 | ||
cd6c91b4 | 14153 | if (attr->form_is_ref ()) |
71a3c369 TT |
14154 | type_die = follow_die_ref (die, attr, &type_cu); |
14155 | if (type_die == NULL) | |
14156 | return NULL; | |
14157 | ||
14158 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14159 | return NULL; | |
14160 | return die_containing_type (type_die, type_cu); | |
14161 | } | |
14162 | ||
14163 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14164 | ||
14165 | static void | |
14166 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14167 | { | |
14168 | struct rust_vtable_symbol *storage = NULL; | |
14169 | ||
14170 | if (cu->language == language_rust) | |
14171 | { | |
14172 | struct type *containing_type = rust_containing_type (die, cu); | |
14173 | ||
14174 | if (containing_type != NULL) | |
14175 | { | |
5e22e966 | 14176 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 14177 | |
8c14c3a3 | 14178 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 14179 | storage->concrete_type = containing_type; |
cf724bc9 | 14180 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14181 | } |
14182 | } | |
14183 | ||
e4a62c65 TV |
14184 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14185 | struct attribute *abstract_origin | |
14186 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14187 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14188 | if (res == NULL && loc && abstract_origin) | |
14189 | { | |
14190 | /* We have a variable without a name, but with a location and an abstract | |
14191 | origin. This may be a concrete instance of an abstract variable | |
14192 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14193 | later. */ | |
14194 | struct dwarf2_cu *origin_cu = cu; | |
14195 | struct die_info *origin_die | |
14196 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
14197 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14198 | per_objfile->per_bfd->abstract_to_concrete | |
14199 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 14200 | } |
71a3c369 TT |
14201 | } |
14202 | ||
43988095 JK |
14203 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14204 | reading .debug_rnglists. | |
14205 | Callback's type should be: | |
14206 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14207 | Return true if the attributes are present and valid, otherwise, | |
14208 | return false. */ | |
14209 | ||
14210 | template <typename Callback> | |
14211 | static bool | |
14212 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
d0ce17d8 | 14213 | dwarf_tag tag, Callback &&callback) |
43988095 | 14214 | { |
976ca316 SM |
14215 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14216 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 14217 | bfd *obfd = objfile->obfd; |
43988095 | 14218 | /* Base address selection entry. */ |
2b24b6e4 | 14219 | gdb::optional<CORE_ADDR> base; |
43988095 | 14220 | const gdb_byte *buffer; |
43988095 JK |
14221 | CORE_ADDR baseaddr; |
14222 | bool overflow = false; | |
d0ce17d8 CT |
14223 | ULONGEST addr_index; |
14224 | struct dwarf2_section_info *rnglists_section; | |
43988095 | 14225 | |
43988095 | 14226 | base = cu->base_address; |
d0ce17d8 CT |
14227 | rnglists_section = cu_debug_rnglists_section (cu, tag); |
14228 | rnglists_section->read (objfile); | |
43988095 | 14229 | |
d0ce17d8 | 14230 | if (offset >= rnglists_section->size) |
43988095 | 14231 | { |
b98664d3 | 14232 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14233 | offset); |
14234 | return false; | |
14235 | } | |
d0ce17d8 | 14236 | buffer = rnglists_section->buffer + offset; |
43988095 | 14237 | |
b3b3bada | 14238 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
14239 | |
14240 | while (1) | |
14241 | { | |
7814882a JK |
14242 | /* Initialize it due to a false compiler warning. */ |
14243 | CORE_ADDR range_beginning = 0, range_end = 0; | |
d0ce17d8 CT |
14244 | const gdb_byte *buf_end = (rnglists_section->buffer |
14245 | + rnglists_section->size); | |
43988095 JK |
14246 | unsigned int bytes_read; |
14247 | ||
14248 | if (buffer == buf_end) | |
14249 | { | |
14250 | overflow = true; | |
14251 | break; | |
14252 | } | |
14253 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14254 | switch (rlet) | |
14255 | { | |
14256 | case DW_RLE_end_of_list: | |
14257 | break; | |
14258 | case DW_RLE_base_address: | |
14259 | if (buffer + cu->header.addr_size > buf_end) | |
14260 | { | |
14261 | overflow = true; | |
14262 | break; | |
14263 | } | |
c8a7a66f | 14264 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14265 | buffer += bytes_read; |
14266 | break; | |
dda83cd7 SM |
14267 | case DW_RLE_base_addressx: |
14268 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14269 | buffer += bytes_read; | |
14270 | base = read_addr_index (cu, addr_index); | |
14271 | break; | |
43988095 JK |
14272 | case DW_RLE_start_length: |
14273 | if (buffer + cu->header.addr_size > buf_end) | |
14274 | { | |
14275 | overflow = true; | |
14276 | break; | |
14277 | } | |
c8a7a66f TT |
14278 | range_beginning = cu->header.read_address (obfd, buffer, |
14279 | &bytes_read); | |
43988095 JK |
14280 | buffer += bytes_read; |
14281 | range_end = (range_beginning | |
14282 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14283 | buffer += bytes_read; | |
14284 | if (buffer > buf_end) | |
14285 | { | |
14286 | overflow = true; | |
14287 | break; | |
14288 | } | |
14289 | break; | |
d0ce17d8 | 14290 | case DW_RLE_startx_length: |
dda83cd7 SM |
14291 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14292 | buffer += bytes_read; | |
14293 | range_beginning = read_addr_index (cu, addr_index); | |
14294 | if (buffer > buf_end) | |
14295 | { | |
14296 | overflow = true; | |
14297 | break; | |
14298 | } | |
14299 | range_end = (range_beginning | |
14300 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14301 | buffer += bytes_read; | |
14302 | break; | |
43988095 JK |
14303 | case DW_RLE_offset_pair: |
14304 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14305 | buffer += bytes_read; | |
14306 | if (buffer > buf_end) | |
14307 | { | |
14308 | overflow = true; | |
14309 | break; | |
14310 | } | |
14311 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14312 | buffer += bytes_read; | |
14313 | if (buffer > buf_end) | |
14314 | { | |
14315 | overflow = true; | |
14316 | break; | |
14317 | } | |
14318 | break; | |
14319 | case DW_RLE_start_end: | |
14320 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14321 | { | |
14322 | overflow = true; | |
14323 | break; | |
14324 | } | |
c8a7a66f TT |
14325 | range_beginning = cu->header.read_address (obfd, buffer, |
14326 | &bytes_read); | |
43988095 | 14327 | buffer += bytes_read; |
c8a7a66f | 14328 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14329 | buffer += bytes_read; |
14330 | break; | |
d0ce17d8 | 14331 | case DW_RLE_startx_endx: |
dda83cd7 SM |
14332 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14333 | buffer += bytes_read; | |
14334 | range_beginning = read_addr_index (cu, addr_index); | |
14335 | if (buffer > buf_end) | |
14336 | { | |
14337 | overflow = true; | |
14338 | break; | |
14339 | } | |
14340 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14341 | buffer += bytes_read; | |
14342 | range_end = read_addr_index (cu, addr_index); | |
14343 | break; | |
43988095 | 14344 | default: |
b98664d3 | 14345 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14346 | return false; |
14347 | } | |
14348 | if (rlet == DW_RLE_end_of_list || overflow) | |
14349 | break; | |
14350 | if (rlet == DW_RLE_base_address) | |
14351 | continue; | |
14352 | ||
43988095 JK |
14353 | if (range_beginning > range_end) |
14354 | { | |
14355 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14356 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14357 | return false; |
14358 | } | |
14359 | ||
14360 | /* Empty range entries have no effect. */ | |
14361 | if (range_beginning == range_end) | |
14362 | continue; | |
14363 | ||
d0ce17d8 CT |
14364 | /* Only DW_RLE_offset_pair needs the base address added. */ |
14365 | if (rlet == DW_RLE_offset_pair) | |
14366 | { | |
14367 | if (!base.has_value ()) | |
14368 | { | |
14369 | /* We have no valid base address for the DW_RLE_offset_pair. */ | |
14370 | complaint (_("Invalid .debug_rnglists data (no base address for " | |
14371 | "DW_RLE_offset_pair)")); | |
14372 | return false; | |
14373 | } | |
14374 | ||
14375 | range_beginning += *base; | |
14376 | range_end += *base; | |
14377 | } | |
43988095 JK |
14378 | |
14379 | /* A not-uncommon case of bad debug info. | |
14380 | Don't pollute the addrmap with bad data. */ | |
14381 | if (range_beginning + baseaddr == 0 | |
976ca316 | 14382 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 14383 | { |
b98664d3 | 14384 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14385 | " [in module %s]"), objfile_name (objfile)); |
14386 | continue; | |
14387 | } | |
14388 | ||
14389 | callback (range_beginning, range_end); | |
14390 | } | |
14391 | ||
14392 | if (overflow) | |
14393 | { | |
b98664d3 | 14394 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14395 | "for DW_AT_ranges attribute"), |
14396 | offset); | |
14397 | return false; | |
14398 | } | |
14399 | ||
14400 | return true; | |
14401 | } | |
14402 | ||
14403 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14404 | Callback's type should be: | |
14405 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14406 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14407 | |
43988095 | 14408 | template <typename Callback> |
43039443 | 14409 | static int |
d0ce17d8 | 14410 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag, |
43988095 | 14411 | Callback &&callback) |
43039443 | 14412 | { |
5e22e966 SM |
14413 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14414 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
14415 | struct comp_unit_head *cu_header = &cu->header; |
14416 | bfd *obfd = objfile->obfd; | |
14417 | unsigned int addr_size = cu_header->addr_size; | |
14418 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14419 | /* Base address selection entry. */ | |
2b24b6e4 | 14420 | gdb::optional<CORE_ADDR> base; |
43039443 | 14421 | unsigned int dummy; |
d521ce57 | 14422 | const gdb_byte *buffer; |
ff013f42 | 14423 | CORE_ADDR baseaddr; |
43039443 | 14424 | |
43988095 | 14425 | if (cu_header->version >= 5) |
d0ce17d8 | 14426 | return dwarf2_rnglists_process (offset, cu, tag, callback); |
43988095 | 14427 | |
d00adf39 | 14428 | base = cu->base_address; |
43039443 | 14429 | |
5e22e966 SM |
14430 | per_objfile->per_bfd->ranges.read (objfile); |
14431 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 14432 | { |
b98664d3 | 14433 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14434 | offset); |
14435 | return 0; | |
14436 | } | |
5e22e966 | 14437 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 14438 | |
b3b3bada | 14439 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14440 | |
43039443 JK |
14441 | while (1) |
14442 | { | |
14443 | CORE_ADDR range_beginning, range_end; | |
14444 | ||
c8a7a66f | 14445 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 14446 | buffer += addr_size; |
c8a7a66f | 14447 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
14448 | buffer += addr_size; |
14449 | offset += 2 * addr_size; | |
14450 | ||
14451 | /* An end of list marker is a pair of zero addresses. */ | |
14452 | if (range_beginning == 0 && range_end == 0) | |
14453 | /* Found the end of list entry. */ | |
14454 | break; | |
14455 | ||
14456 | /* Each base address selection entry is a pair of 2 values. | |
14457 | The first is the largest possible address, the second is | |
14458 | the base address. Check for a base address here. */ | |
14459 | if ((range_beginning & mask) == mask) | |
14460 | { | |
28d2bfb9 AB |
14461 | /* If we found the largest possible address, then we already |
14462 | have the base address in range_end. */ | |
14463 | base = range_end; | |
43039443 JK |
14464 | continue; |
14465 | } | |
14466 | ||
2b24b6e4 | 14467 | if (!base.has_value ()) |
43039443 JK |
14468 | { |
14469 | /* We have no valid base address for the ranges | |
14470 | data. */ | |
b98664d3 | 14471 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14472 | return 0; |
14473 | } | |
14474 | ||
9277c30c UW |
14475 | if (range_beginning > range_end) |
14476 | { | |
14477 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14478 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14479 | return 0; |
14480 | } | |
14481 | ||
14482 | /* Empty range entries have no effect. */ | |
14483 | if (range_beginning == range_end) | |
14484 | continue; | |
14485 | ||
2b24b6e4 TT |
14486 | range_beginning += *base; |
14487 | range_end += *base; | |
43039443 | 14488 | |
01093045 DE |
14489 | /* A not-uncommon case of bad debug info. |
14490 | Don't pollute the addrmap with bad data. */ | |
14491 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14492 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14493 | { |
b98664d3 | 14494 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14495 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14496 | continue; |
14497 | } | |
14498 | ||
5f46c5a5 JK |
14499 | callback (range_beginning, range_end); |
14500 | } | |
14501 | ||
14502 | return 1; | |
14503 | } | |
14504 | ||
14505 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14506 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14507 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14508 | ||
14509 | static int | |
14510 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14511 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
d0ce17d8 | 14512 | dwarf2_psymtab *ranges_pst, dwarf_tag tag) |
5f46c5a5 | 14513 | { |
5e22e966 | 14514 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14515 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14516 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14517 | int low_set = 0; |
14518 | CORE_ADDR low = 0; | |
14519 | CORE_ADDR high = 0; | |
14520 | int retval; | |
14521 | ||
d0ce17d8 | 14522 | retval = dwarf2_ranges_process (offset, cu, tag, |
5f46c5a5 JK |
14523 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) |
14524 | { | |
9277c30c | 14525 | if (ranges_pst != NULL) |
3e29f34a MR |
14526 | { |
14527 | CORE_ADDR lowpc; | |
14528 | CORE_ADDR highpc; | |
14529 | ||
79748972 TT |
14530 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14531 | range_beginning + baseaddr) | |
14532 | - baseaddr); | |
14533 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14534 | range_end + baseaddr) | |
14535 | - baseaddr); | |
d320c2b5 TT |
14536 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14537 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14538 | } |
ff013f42 | 14539 | |
43039443 JK |
14540 | /* FIXME: This is recording everything as a low-high |
14541 | segment of consecutive addresses. We should have a | |
14542 | data structure for discontiguous block ranges | |
14543 | instead. */ | |
14544 | if (! low_set) | |
14545 | { | |
14546 | low = range_beginning; | |
14547 | high = range_end; | |
14548 | low_set = 1; | |
14549 | } | |
14550 | else | |
14551 | { | |
14552 | if (range_beginning < low) | |
14553 | low = range_beginning; | |
14554 | if (range_end > high) | |
14555 | high = range_end; | |
14556 | } | |
5f46c5a5 JK |
14557 | }); |
14558 | if (!retval) | |
14559 | return 0; | |
43039443 JK |
14560 | |
14561 | if (! low_set) | |
14562 | /* If the first entry is an end-of-list marker, the range | |
14563 | describes an empty scope, i.e. no instructions. */ | |
14564 | return 0; | |
14565 | ||
14566 | if (low_return) | |
14567 | *low_return = low; | |
14568 | if (high_return) | |
14569 | *high_return = high; | |
14570 | return 1; | |
14571 | } | |
14572 | ||
3a2b436a JK |
14573 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14574 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14575 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14576 | |
3a2b436a | 14577 | static enum pc_bounds_kind |
af34e669 | 14578 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14579 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14580 | dwarf2_psymtab *pst) |
c906108c | 14581 | { |
976ca316 | 14582 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14583 | struct attribute *attr; |
91da1414 | 14584 | struct attribute *attr_high; |
af34e669 DJ |
14585 | CORE_ADDR low = 0; |
14586 | CORE_ADDR high = 0; | |
e385593e | 14587 | enum pc_bounds_kind ret; |
c906108c | 14588 | |
91da1414 MW |
14589 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14590 | if (attr_high) | |
af34e669 | 14591 | { |
e142c38c | 14592 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14593 | if (attr != nullptr) |
dda83cd7 | 14594 | { |
95f982e5 TT |
14595 | low = attr->as_address (); |
14596 | high = attr_high->as_address (); | |
cd6c91b4 | 14597 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14598 | high += low; |
91da1414 | 14599 | } |
af34e669 DJ |
14600 | else |
14601 | /* Found high w/o low attribute. */ | |
e385593e | 14602 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14603 | |
14604 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14605 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14606 | } |
c906108c | 14607 | else |
af34e669 | 14608 | { |
e142c38c | 14609 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
529908cb | 14610 | if (attr != nullptr && attr->form_is_unsigned ()) |
af34e669 | 14611 | { |
2b0c7f41 SM |
14612 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14613 | on DWARF version). */ | |
14614 | ULONGEST ranges_offset = attr->as_unsigned (); | |
14615 | ||
14616 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
14617 | this value. */ | |
14618 | if (die->tag != DW_TAG_compile_unit) | |
14619 | ranges_offset += cu->gnu_ranges_base; | |
2e3cf129 | 14620 | |
af34e669 | 14621 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14622 | .debug_ranges section. */ |
d0ce17d8 CT |
14623 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst, |
14624 | die->tag)) | |
e385593e | 14625 | return PC_BOUNDS_INVALID; |
43039443 | 14626 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14627 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14628 | } |
e385593e JK |
14629 | else |
14630 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14631 | } |
c906108c | 14632 | |
48fbe735 | 14633 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14634 | if (high <= low) |
e385593e | 14635 | return PC_BOUNDS_INVALID; |
c906108c SS |
14636 | |
14637 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14638 | eliminate duplicate copies of functions and vtables and such. | |
14639 | The linker will arbitrarily choose one and discard the others. | |
14640 | The AT_*_pc values for such functions refer to local labels in | |
14641 | these sections. If the section from that file was discarded, the | |
14642 | labels are not in the output, so the relocs get a value of 0. | |
14643 | If this is a discarded function, mark the pc bounds as invalid, | |
14644 | so that GDB will ignore it. */ | |
976ca316 | 14645 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14646 | return PC_BOUNDS_INVALID; |
c906108c SS |
14647 | |
14648 | *lowpc = low; | |
96408a79 SA |
14649 | if (highpc) |
14650 | *highpc = high; | |
af34e669 | 14651 | return ret; |
c906108c SS |
14652 | } |
14653 | ||
b084d499 JB |
14654 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14655 | its low and high PC addresses. Do nothing if these addresses could not | |
14656 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14657 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14658 | ||
14659 | static void | |
14660 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
dda83cd7 SM |
14661 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
14662 | struct dwarf2_cu *cu) | |
b084d499 JB |
14663 | { |
14664 | CORE_ADDR low, high; | |
14665 | struct die_info *child = die->child; | |
14666 | ||
e385593e | 14667 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14668 | { |
325fac50 PA |
14669 | *lowpc = std::min (*lowpc, low); |
14670 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14671 | } |
14672 | ||
14673 | /* If the language does not allow nested subprograms (either inside | |
14674 | subprograms or lexical blocks), we're done. */ | |
14675 | if (cu->language != language_ada) | |
14676 | return; | |
6e70227d | 14677 | |
b084d499 JB |
14678 | /* Check all the children of the given DIE. If it contains nested |
14679 | subprograms, then check their pc bounds. Likewise, we need to | |
14680 | check lexical blocks as well, as they may also contain subprogram | |
14681 | definitions. */ | |
14682 | while (child && child->tag) | |
14683 | { | |
14684 | if (child->tag == DW_TAG_subprogram | |
dda83cd7 SM |
14685 | || child->tag == DW_TAG_lexical_block) |
14686 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14687 | child = child->sibling; |
b084d499 JB |
14688 | } |
14689 | } | |
14690 | ||
fae299cd DC |
14691 | /* Get the low and high pc's represented by the scope DIE, and store |
14692 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14693 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14694 | ||
14695 | static void | |
14696 | get_scope_pc_bounds (struct die_info *die, | |
14697 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14698 | struct dwarf2_cu *cu) | |
14699 | { | |
14700 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14701 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14702 | CORE_ADDR current_low, current_high; | |
14703 | ||
3a2b436a | 14704 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14705 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14706 | { |
14707 | best_low = current_low; | |
14708 | best_high = current_high; | |
14709 | } | |
14710 | else | |
14711 | { | |
14712 | struct die_info *child = die->child; | |
14713 | ||
14714 | while (child && child->tag) | |
14715 | { | |
14716 | switch (child->tag) { | |
14717 | case DW_TAG_subprogram: | |
dda83cd7 | 14718 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14719 | break; |
14720 | case DW_TAG_namespace: | |
f55ee35c | 14721 | case DW_TAG_module: |
fae299cd DC |
14722 | /* FIXME: carlton/2004-01-16: Should we do this for |
14723 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14724 | that current GCC's always emit the DIEs corresponding | |
14725 | to definitions of methods of classes as children of a | |
14726 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14727 | the DIEs giving the declarations, which could be | |
14728 | anywhere). But I don't see any reason why the | |
14729 | standards says that they have to be there. */ | |
14730 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14731 | ||
14732 | if (current_low != ((CORE_ADDR) -1)) | |
14733 | { | |
325fac50 PA |
14734 | best_low = std::min (best_low, current_low); |
14735 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14736 | } |
14737 | break; | |
14738 | default: | |
0963b4bd | 14739 | /* Ignore. */ |
fae299cd DC |
14740 | break; |
14741 | } | |
14742 | ||
436c571c | 14743 | child = child->sibling; |
fae299cd DC |
14744 | } |
14745 | } | |
14746 | ||
14747 | *lowpc = best_low; | |
14748 | *highpc = best_high; | |
14749 | } | |
14750 | ||
801e3a5b JB |
14751 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14752 | in DIE. */ | |
380bca97 | 14753 | |
801e3a5b JB |
14754 | static void |
14755 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
dda83cd7 | 14756 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) |
801e3a5b | 14757 | { |
5e22e966 | 14758 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14759 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14760 | struct attribute *attr; |
91da1414 | 14761 | struct attribute *attr_high; |
801e3a5b | 14762 | |
91da1414 MW |
14763 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14764 | if (attr_high) | |
801e3a5b | 14765 | { |
801e3a5b | 14766 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14767 | if (attr != nullptr) |
dda83cd7 | 14768 | { |
95f982e5 TT |
14769 | CORE_ADDR low = attr->as_address (); |
14770 | CORE_ADDR high = attr_high->as_address (); | |
31aa7e4e | 14771 | |
cd6c91b4 | 14772 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14773 | high += low; |
9a619af0 | 14774 | |
3e29f34a MR |
14775 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14776 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14777 | cu->get_builder ()->record_block_range (block, low, high - 1); |
dda83cd7 | 14778 | } |
801e3a5b JB |
14779 | } |
14780 | ||
14781 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
529908cb | 14782 | if (attr != nullptr && attr->form_is_unsigned ()) |
801e3a5b | 14783 | { |
2b0c7f41 SM |
14784 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14785 | on DWARF version). */ | |
14786 | ULONGEST ranges_offset = attr->as_unsigned (); | |
801e3a5b | 14787 | |
2b0c7f41 SM |
14788 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add |
14789 | this value. */ | |
14790 | if (die->tag != DW_TAG_compile_unit) | |
14791 | ranges_offset += cu->gnu_ranges_base; | |
801e3a5b | 14792 | |
2d5f09ec | 14793 | std::vector<blockrange> blockvec; |
2b0c7f41 | 14794 | dwarf2_ranges_process (ranges_offset, cu, die->tag, |
5f46c5a5 JK |
14795 | [&] (CORE_ADDR start, CORE_ADDR end) |
14796 | { | |
58fdfd2c JK |
14797 | start += baseaddr; |
14798 | end += baseaddr; | |
5f46c5a5 JK |
14799 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14800 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14801 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14802 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14803 | }); |
2d5f09ec KB |
14804 | |
14805 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14806 | } |
14807 | } | |
14808 | ||
685b1105 JK |
14809 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14810 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14811 | |
685b1105 JK |
14812 | static void |
14813 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14814 | { |
38360086 | 14815 | int major, minor; |
60d5a603 JK |
14816 | |
14817 | if (cu->producer == NULL) | |
14818 | { | |
14819 | /* For unknown compilers expect their behavior is DWARF version | |
14820 | compliant. | |
14821 | ||
14822 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14823 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14824 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14825 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14826 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14827 | } |
b1ffba5a | 14828 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14829 | { |
38360086 MW |
14830 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14831 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14832 | } |
5230b05a | 14833 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14834 | { |
14835 | cu->producer_is_icc = true; | |
14836 | cu->producer_is_icc_lt_14 = major < 14; | |
14837 | } | |
c258c396 JD |
14838 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14839 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14840 | else |
14841 | { | |
14842 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14843 | compliant. */ | |
60d5a603 JK |
14844 | } |
14845 | ||
9068261f | 14846 | cu->checked_producer = true; |
685b1105 | 14847 | } |
ba919b58 | 14848 | |
685b1105 JK |
14849 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14850 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14851 | during 4.6.0 experimental. */ | |
14852 | ||
9068261f | 14853 | static bool |
685b1105 JK |
14854 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14855 | { | |
14856 | if (!cu->checked_producer) | |
14857 | check_producer (cu); | |
14858 | ||
14859 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14860 | } |
14861 | ||
c258c396 JD |
14862 | |
14863 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14864 | with incorrect is_stmt attributes. */ | |
14865 | ||
14866 | static bool | |
14867 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14868 | { | |
14869 | if (!cu->checked_producer) | |
14870 | check_producer (cu); | |
14871 | ||
14872 | return cu->producer_is_codewarrior; | |
14873 | } | |
14874 | ||
bf23a268 TT |
14875 | /* Return the accessibility of DIE, as given by DW_AT_accessibility. |
14876 | If that attribute is not available, return the appropriate | |
14877 | default. */ | |
60d5a603 JK |
14878 | |
14879 | static enum dwarf_access_attribute | |
bf23a268 | 14880 | dwarf2_access_attribute (struct die_info *die, struct dwarf2_cu *cu) |
60d5a603 | 14881 | { |
bf23a268 TT |
14882 | attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
14883 | if (attr != nullptr) | |
14884 | { | |
14885 | LONGEST value = attr->constant_value (-1); | |
14886 | if (value == DW_ACCESS_public | |
14887 | || value == DW_ACCESS_protected | |
14888 | || value == DW_ACCESS_private) | |
14889 | return (dwarf_access_attribute) value; | |
14890 | complaint (_("Unhandled DW_AT_accessibility value (%s)"), | |
14891 | plongest (value)); | |
14892 | } | |
14893 | ||
60d5a603 JK |
14894 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) |
14895 | { | |
14896 | /* The default DWARF 2 accessibility for members is public, the default | |
14897 | accessibility for inheritance is private. */ | |
14898 | ||
14899 | if (die->tag != DW_TAG_inheritance) | |
14900 | return DW_ACCESS_public; | |
14901 | else | |
14902 | return DW_ACCESS_private; | |
14903 | } | |
14904 | else | |
14905 | { | |
14906 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14907 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14908 | depends on the container kind. */ | |
14909 | ||
14910 | if (die->parent->tag == DW_TAG_class_type) | |
14911 | return DW_ACCESS_private; | |
14912 | else | |
14913 | return DW_ACCESS_public; | |
14914 | } | |
14915 | } | |
14916 | ||
74ac6d43 TT |
14917 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14918 | offset. If the attribute was not found return 0, otherwise return | |
14919 | 1. If it was found but could not properly be handled, set *OFFSET | |
14920 | to 0. */ | |
14921 | ||
14922 | static int | |
14923 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14924 | LONGEST *offset) | |
14925 | { | |
14926 | struct attribute *attr; | |
14927 | ||
14928 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14929 | if (attr != NULL) | |
14930 | { | |
14931 | *offset = 0; | |
14932 | ||
14933 | /* Note that we do not check for a section offset first here. | |
14934 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14935 | so if we see it, we can assume that a constant form is really | |
14936 | a constant and not a section offset. */ | |
cd6c91b4 | 14937 | if (attr->form_is_constant ()) |
0826b30a | 14938 | *offset = attr->constant_value (0); |
cd6c91b4 | 14939 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14940 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14941 | else if (attr->form_is_block ()) |
9d2246fc | 14942 | *offset = decode_locdesc (attr->as_block (), cu); |
74ac6d43 TT |
14943 | else |
14944 | dwarf2_complex_location_expr_complaint (); | |
14945 | ||
14946 | return 1; | |
14947 | } | |
14948 | ||
14949 | return 0; | |
14950 | } | |
14951 | ||
7d79de9a TT |
14952 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14953 | ||
14954 | static void | |
14955 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14956 | struct field *field) | |
14957 | { | |
14958 | struct attribute *attr; | |
14959 | ||
14960 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14961 | if (attr != NULL) | |
14962 | { | |
14963 | if (attr->form_is_constant ()) | |
14964 | { | |
14965 | LONGEST offset = attr->constant_value (0); | |
14966 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14967 | } | |
14968 | else if (attr->form_is_section_offset ()) | |
14969 | dwarf2_complex_location_expr_complaint (); | |
14970 | else if (attr->form_is_block ()) | |
14971 | { | |
14972 | bool handled; | |
9d2246fc | 14973 | CORE_ADDR offset = decode_locdesc (attr->as_block (), cu, &handled); |
7d79de9a TT |
14974 | if (handled) |
14975 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14976 | else | |
14977 | { | |
5e22e966 SM |
14978 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14979 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14980 | struct dwarf2_locexpr_baton *dlbaton |
14981 | = XOBNEW (&objfile->objfile_obstack, | |
14982 | struct dwarf2_locexpr_baton); | |
9d2246fc TT |
14983 | dlbaton->data = attr->as_block ()->data; |
14984 | dlbaton->size = attr->as_block ()->size; | |
7d79de9a TT |
14985 | /* When using this baton, we want to compute the address |
14986 | of the field, not the value. This is why | |
14987 | is_reference is set to false here. */ | |
14988 | dlbaton->is_reference = false; | |
5e22e966 | 14989 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14990 | dlbaton->per_cu = cu->per_cu; |
14991 | ||
14992 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14993 | } | |
14994 | } | |
14995 | else | |
14996 | dwarf2_complex_location_expr_complaint (); | |
14997 | } | |
14998 | } | |
14999 | ||
c906108c SS |
15000 | /* Add an aggregate field to the field list. */ |
15001 | ||
15002 | static void | |
107d2387 | 15003 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15004 | struct dwarf2_cu *cu) |
6e70227d | 15005 | { |
5e22e966 | 15006 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 15007 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
15008 | struct nextfield *new_field; |
15009 | struct attribute *attr; | |
15010 | struct field *fp; | |
15d034d0 | 15011 | const char *fieldname = ""; |
c906108c | 15012 | |
7d0ccb61 DJ |
15013 | if (die->tag == DW_TAG_inheritance) |
15014 | { | |
be2daae6 TT |
15015 | fip->baseclasses.emplace_back (); |
15016 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15017 | } |
15018 | else | |
15019 | { | |
be2daae6 TT |
15020 | fip->fields.emplace_back (); |
15021 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15022 | } |
be2daae6 | 15023 | |
9c6a1327 TT |
15024 | new_field->offset = die->sect_off; |
15025 | ||
bf23a268 | 15026 | new_field->accessibility = dwarf2_access_attribute (die, cu); |
c906108c | 15027 | if (new_field->accessibility != DW_ACCESS_public) |
264fc0e2 | 15028 | fip->non_public_fields = true; |
60d5a603 | 15029 | |
e142c38c | 15030 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 15031 | if (attr != nullptr) |
23dca5c3 | 15032 | new_field->virtuality = attr->as_virtuality (); |
60d5a603 JK |
15033 | else |
15034 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15035 | |
15036 | fp = &new_field->field; | |
a9a9bd0f | 15037 | |
e142c38c | 15038 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15039 | { |
a9a9bd0f | 15040 | /* Data member other than a C++ static data member. */ |
6e70227d | 15041 | |
c906108c | 15042 | /* Get type of field. */ |
5d14b6e5 | 15043 | fp->set_type (die_type (die, cu)); |
c906108c | 15044 | |
d6a843b5 | 15045 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15046 | |
c906108c | 15047 | /* Get bit size of field (zero if none). */ |
e142c38c | 15048 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 15049 | if (attr != nullptr) |
c906108c | 15050 | { |
529908cb | 15051 | FIELD_BITSIZE (*fp) = attr->constant_value (0); |
c906108c SS |
15052 | } |
15053 | else | |
15054 | { | |
15055 | FIELD_BITSIZE (*fp) = 0; | |
15056 | } | |
15057 | ||
15058 | /* Get bit offset of field. */ | |
7d79de9a | 15059 | handle_data_member_location (die, cu, fp); |
e142c38c | 15060 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
7c184d33 | 15061 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c | 15062 | { |
d5a22e77 | 15063 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
15064 | { |
15065 | /* For big endian bits, the DW_AT_bit_offset gives the | |
dda83cd7 SM |
15066 | additional bit offset from the MSB of the containing |
15067 | anonymous object to the MSB of the field. We don't | |
15068 | have to do anything special since we don't need to | |
15069 | know the size of the anonymous object. */ | |
529908cb | 15070 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) |
7c184d33 | 15071 | + attr->constant_value (0))); |
c906108c SS |
15072 | } |
15073 | else | |
15074 | { | |
15075 | /* For little endian bits, compute the bit offset to the | |
dda83cd7 SM |
15076 | MSB of the anonymous object, subtract off the number of |
15077 | bits from the MSB of the field to the MSB of the | |
15078 | object, and then subtract off the number of bits of | |
15079 | the field itself. The result is the bit offset of | |
15080 | the LSB of the field. */ | |
c906108c | 15081 | int anonymous_size; |
7c184d33 | 15082 | int bit_offset = attr->constant_value (0); |
c906108c | 15083 | |
e142c38c | 15084 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
7c184d33 | 15085 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c SS |
15086 | { |
15087 | /* The size of the anonymous object containing | |
15088 | the bit field is explicit, so use the | |
15089 | indicated size (in bytes). */ | |
7c184d33 | 15090 | anonymous_size = attr->constant_value (0); |
c906108c SS |
15091 | } |
15092 | else | |
15093 | { | |
15094 | /* The size of the anonymous object containing | |
15095 | the bit field must be inferred from the type | |
15096 | attribute of the data member containing the | |
15097 | bit field. */ | |
5d14b6e5 | 15098 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 15099 | } |
f41f5e61 PA |
15100 | SET_FIELD_BITPOS (*fp, |
15101 | (FIELD_BITPOS (*fp) | |
15102 | + anonymous_size * bits_per_byte | |
15103 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15104 | } |
15105 | } | |
da5b30da AA |
15106 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15107 | if (attr != NULL) | |
15108 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 15109 | + attr->constant_value (0))); |
c906108c SS |
15110 | |
15111 | /* Get name of field. */ | |
39cbfefa DJ |
15112 | fieldname = dwarf2_name (die, cu); |
15113 | if (fieldname == NULL) | |
15114 | fieldname = ""; | |
d8151005 DJ |
15115 | |
15116 | /* The name is already allocated along with this objfile, so we don't | |
15117 | need to duplicate it for the type. */ | |
15118 | fp->name = fieldname; | |
c906108c SS |
15119 | |
15120 | /* Change accessibility for artificial fields (e.g. virtual table | |
dda83cd7 | 15121 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15122 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15123 | { |
d48cc9dd | 15124 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c | 15125 | new_field->accessibility = DW_ACCESS_private; |
264fc0e2 | 15126 | fip->non_public_fields = true; |
c906108c SS |
15127 | } |
15128 | } | |
a9a9bd0f | 15129 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15130 | { |
a9a9bd0f DC |
15131 | /* C++ static member. */ |
15132 | ||
15133 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15134 | is a declaration, but all versions of G++ as of this writing | |
15135 | (so through at least 3.2.1) incorrectly generate | |
15136 | DW_TAG_variable tags. */ | |
6e70227d | 15137 | |
ff355380 | 15138 | const char *physname; |
c906108c | 15139 | |
a9a9bd0f | 15140 | /* Get name of field. */ |
39cbfefa DJ |
15141 | fieldname = dwarf2_name (die, cu); |
15142 | if (fieldname == NULL) | |
c906108c SS |
15143 | return; |
15144 | ||
254e6b9e | 15145 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15146 | if (attr |
15147 | /* Only create a symbol if this is an external value. | |
15148 | new_symbol checks this and puts the value in the global symbol | |
15149 | table, which we want. If it is not external, new_symbol | |
15150 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15151 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15152 | { |
15153 | /* A static const member, not much different than an enum as far as | |
15154 | we're concerned, except that we can support more types. */ | |
15155 | new_symbol (die, NULL, cu); | |
15156 | } | |
15157 | ||
2df3850c | 15158 | /* Get physical name. */ |
ff355380 | 15159 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15160 | |
d8151005 DJ |
15161 | /* The name is already allocated along with this objfile, so we don't |
15162 | need to duplicate it for the type. */ | |
15163 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 15164 | fp->set_type (die_type (die, cu)); |
d8151005 | 15165 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15166 | } |
15167 | else if (die->tag == DW_TAG_inheritance) | |
15168 | { | |
74ac6d43 | 15169 | /* C++ base class field. */ |
7d79de9a | 15170 | handle_data_member_location (die, cu, fp); |
c906108c | 15171 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
15172 | fp->set_type (die_type (die, cu)); |
15173 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 15174 | } |
2ddeaf8a TT |
15175 | else |
15176 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15177 | } |
15178 | ||
883fd55a KS |
15179 | /* Can the type given by DIE define another type? */ |
15180 | ||
15181 | static bool | |
15182 | type_can_define_types (const struct die_info *die) | |
15183 | { | |
15184 | switch (die->tag) | |
15185 | { | |
15186 | case DW_TAG_typedef: | |
15187 | case DW_TAG_class_type: | |
15188 | case DW_TAG_structure_type: | |
15189 | case DW_TAG_union_type: | |
15190 | case DW_TAG_enumeration_type: | |
15191 | return true; | |
15192 | ||
15193 | default: | |
15194 | return false; | |
15195 | } | |
15196 | } | |
15197 | ||
15198 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15199 | |
15200 | static void | |
883fd55a KS |
15201 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15202 | struct dwarf2_cu *cu) | |
6e70227d | 15203 | { |
be2daae6 TT |
15204 | struct decl_field fp; |
15205 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15206 | |
883fd55a | 15207 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15208 | |
883fd55a | 15209 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15210 | fp.name = dwarf2_name (die, cu); |
15211 | fp.type = read_type_die (die, cu); | |
98751a41 | 15212 | |
c191a687 | 15213 | /* Save accessibility. */ |
bf23a268 | 15214 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
c191a687 KS |
15215 | switch (accessibility) |
15216 | { | |
15217 | case DW_ACCESS_public: | |
15218 | /* The assumed value if neither private nor protected. */ | |
15219 | break; | |
15220 | case DW_ACCESS_private: | |
be2daae6 | 15221 | fp.is_private = 1; |
c191a687 KS |
15222 | break; |
15223 | case DW_ACCESS_protected: | |
be2daae6 | 15224 | fp.is_protected = 1; |
c191a687 | 15225 | break; |
c191a687 KS |
15226 | } |
15227 | ||
883fd55a | 15228 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15229 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15230 | else |
be2daae6 | 15231 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15232 | } |
15233 | ||
9c6a1327 TT |
15234 | /* A convenience typedef that's used when finding the discriminant |
15235 | field for a variant part. */ | |
1b95cdb7 SM |
15236 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
15237 | offset_map_type; | |
9c6a1327 TT |
15238 | |
15239 | /* Compute the discriminant range for a given variant. OBSTACK is | |
15240 | where the results will be stored. VARIANT is the variant to | |
15241 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
15242 | or unsigned. */ | |
15243 | ||
15244 | static const gdb::array_view<discriminant_range> | |
15245 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
15246 | bool is_unsigned) | |
15247 | { | |
15248 | std::vector<discriminant_range> ranges; | |
15249 | ||
15250 | if (variant.default_branch) | |
15251 | return {}; | |
15252 | ||
15253 | if (variant.discr_list_data == nullptr) | |
15254 | { | |
15255 | discriminant_range r | |
15256 | = {variant.discriminant_value, variant.discriminant_value}; | |
15257 | ranges.push_back (r); | |
15258 | } | |
15259 | else | |
15260 | { | |
15261 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
15262 | variant.discr_list_data->size); | |
15263 | while (!data.empty ()) | |
15264 | { | |
15265 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
15266 | { | |
15267 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
15268 | break; | |
15269 | } | |
15270 | bool is_range = data[0] == DW_DSC_range; | |
15271 | data = data.slice (1); | |
15272 | ||
15273 | ULONGEST low, high; | |
15274 | unsigned int bytes_read; | |
15275 | ||
15276 | if (data.empty ()) | |
15277 | { | |
15278 | complaint (_("DW_AT_discr_list missing low value")); | |
15279 | break; | |
15280 | } | |
15281 | if (is_unsigned) | |
15282 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
15283 | else | |
15284 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
15285 | &bytes_read); | |
15286 | data = data.slice (bytes_read); | |
15287 | ||
15288 | if (is_range) | |
15289 | { | |
15290 | if (data.empty ()) | |
15291 | { | |
15292 | complaint (_("DW_AT_discr_list missing high value")); | |
15293 | break; | |
15294 | } | |
15295 | if (is_unsigned) | |
15296 | high = read_unsigned_leb128 (nullptr, data.data (), | |
15297 | &bytes_read); | |
15298 | else | |
15299 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
15300 | &bytes_read); | |
15301 | data = data.slice (bytes_read); | |
15302 | } | |
15303 | else | |
15304 | high = low; | |
15305 | ||
15306 | ranges.push_back ({ low, high }); | |
15307 | } | |
15308 | } | |
15309 | ||
15310 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
15311 | ranges.size ()); | |
15312 | std::copy (ranges.begin (), ranges.end (), result); | |
15313 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
15314 | } | |
15315 | ||
15316 | static const gdb::array_view<variant_part> create_variant_parts | |
15317 | (struct obstack *obstack, | |
15318 | const offset_map_type &offset_map, | |
15319 | struct field_info *fi, | |
15320 | const std::vector<variant_part_builder> &variant_parts); | |
15321 | ||
15322 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
15323 | the variant to fill in. OBSTACK is where any needed allocations | |
15324 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
15325 | fields for the type. FI describes the fields of the type we're | |
15326 | processing. FIELD is the variant field we're converting. */ | |
15327 | ||
15328 | static void | |
15329 | create_one_variant (variant &result, struct obstack *obstack, | |
15330 | const offset_map_type &offset_map, | |
15331 | struct field_info *fi, const variant_field &field) | |
15332 | { | |
15333 | result.discriminants = convert_variant_range (obstack, field, false); | |
15334 | result.first_field = field.first_field + fi->baseclasses.size (); | |
15335 | result.last_field = field.last_field + fi->baseclasses.size (); | |
15336 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
15337 | field.variant_parts); | |
15338 | } | |
15339 | ||
15340 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
15341 | is the variant part to fill in. OBSTACK is where any needed | |
15342 | allocations will be done. OFFSET_MAP holds the mapping from | |
15343 | section offsets to fields for the type. FI describes the fields of | |
15344 | the type we're processing. BUILDER is the variant part to be | |
15345 | converted. */ | |
15346 | ||
15347 | static void | |
15348 | create_one_variant_part (variant_part &result, | |
15349 | struct obstack *obstack, | |
15350 | const offset_map_type &offset_map, | |
15351 | struct field_info *fi, | |
15352 | const variant_part_builder &builder) | |
15353 | { | |
15354 | auto iter = offset_map.find (builder.discriminant_offset); | |
15355 | if (iter == offset_map.end ()) | |
15356 | { | |
15357 | result.discriminant_index = -1; | |
15358 | /* Doesn't matter. */ | |
15359 | result.is_unsigned = false; | |
15360 | } | |
15361 | else | |
15362 | { | |
15363 | result.discriminant_index = iter->second; | |
15364 | result.is_unsigned | |
c6d940a9 | 15365 | = fi->fields[result.discriminant_index].field.type ()->is_unsigned (); |
9c6a1327 TT |
15366 | } |
15367 | ||
15368 | size_t n = builder.variants.size (); | |
15369 | variant *output = new (obstack) variant[n]; | |
15370 | for (size_t i = 0; i < n; ++i) | |
15371 | create_one_variant (output[i], obstack, offset_map, fi, | |
15372 | builder.variants[i]); | |
15373 | ||
15374 | result.variants = gdb::array_view<variant> (output, n); | |
15375 | } | |
15376 | ||
15377 | /* Create a vector of variant parts that can be attached to a type. | |
15378 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
15379 | holds the mapping from section offsets to fields for the type. FI | |
15380 | describes the fields of the type we're processing. VARIANT_PARTS | |
15381 | is the vector to convert. */ | |
15382 | ||
15383 | static const gdb::array_view<variant_part> | |
15384 | create_variant_parts (struct obstack *obstack, | |
15385 | const offset_map_type &offset_map, | |
15386 | struct field_info *fi, | |
15387 | const std::vector<variant_part_builder> &variant_parts) | |
15388 | { | |
15389 | if (variant_parts.empty ()) | |
15390 | return {}; | |
15391 | ||
15392 | size_t n = variant_parts.size (); | |
15393 | variant_part *result = new (obstack) variant_part[n]; | |
15394 | for (size_t i = 0; i < n; ++i) | |
15395 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
15396 | variant_parts[i]); | |
15397 | ||
15398 | return gdb::array_view<variant_part> (result, n); | |
15399 | } | |
15400 | ||
15401 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
15402 | done. */ | |
15403 | ||
15404 | static void | |
15405 | add_variant_property (struct field_info *fip, struct type *type, | |
15406 | struct dwarf2_cu *cu) | |
15407 | { | |
15408 | /* Map section offsets of fields to their field index. Note the | |
15409 | field index here does not take the number of baseclasses into | |
15410 | account. */ | |
15411 | offset_map_type offset_map; | |
15412 | for (int i = 0; i < fip->fields.size (); ++i) | |
15413 | offset_map[fip->fields[i].offset] = i; | |
15414 | ||
5e22e966 | 15415 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
15416 | gdb::array_view<variant_part> parts |
15417 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
15418 | fip->variant_parts); | |
15419 | ||
15420 | struct dynamic_prop prop; | |
8c2e4e06 SM |
15421 | prop.set_variant_parts ((gdb::array_view<variant_part> *) |
15422 | obstack_copy (&objfile->objfile_obstack, &parts, | |
15423 | sizeof (parts))); | |
9c6a1327 | 15424 | |
5c54719c | 15425 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
15426 | } |
15427 | ||
c906108c SS |
15428 | /* Create the vector of fields, and attach it to the type. */ |
15429 | ||
15430 | static void | |
fba45db2 | 15431 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15432 | struct dwarf2_cu *cu) |
c906108c | 15433 | { |
317f7127 | 15434 | int nfields = fip->nfields (); |
c906108c SS |
15435 | |
15436 | /* Record the field count, allocate space for the array of fields, | |
15437 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 15438 | type->set_num_fields (nfields); |
3cabb6b0 SM |
15439 | type->set_fields |
15440 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 15441 | |
b4ba55a1 | 15442 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15443 | { |
15444 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15445 | ||
15446 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15447 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15448 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15449 | ||
15450 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15451 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15452 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15453 | ||
774b6a14 TT |
15454 | TYPE_FIELD_IGNORE_BITS (type) = |
15455 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15456 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15457 | } |
15458 | ||
15459 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15460 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15461 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15462 | { |
be2daae6 | 15463 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15464 | unsigned char *pointer; |
c906108c SS |
15465 | |
15466 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15467 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15468 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15469 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15470 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15471 | } |
15472 | ||
9c6a1327 TT |
15473 | if (!fip->variant_parts.empty ()) |
15474 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15475 | |
be2daae6 TT |
15476 | /* Copy the saved-up fields into the field vector. */ |
15477 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15478 | { |
be2daae6 TT |
15479 | struct nextfield &field |
15480 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15481 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15482 | |
ceacbf6e | 15483 | type->field (i) = field.field; |
be2daae6 | 15484 | switch (field.accessibility) |
c906108c | 15485 | { |
c5aa993b | 15486 | case DW_ACCESS_private: |
b4ba55a1 | 15487 | if (cu->language != language_ada) |
be2daae6 | 15488 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15489 | break; |
c906108c | 15490 | |
c5aa993b | 15491 | case DW_ACCESS_protected: |
b4ba55a1 | 15492 | if (cu->language != language_ada) |
be2daae6 | 15493 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15494 | break; |
c906108c | 15495 | |
c5aa993b JM |
15496 | case DW_ACCESS_public: |
15497 | break; | |
c906108c | 15498 | |
c5aa993b JM |
15499 | default: |
15500 | /* Unknown accessibility. Complain and treat it as public. */ | |
15501 | { | |
b98664d3 | 15502 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15503 | field.accessibility); |
c5aa993b JM |
15504 | } |
15505 | break; | |
c906108c | 15506 | } |
be2daae6 | 15507 | if (i < fip->baseclasses.size ()) |
c906108c | 15508 | { |
be2daae6 | 15509 | switch (field.virtuality) |
c906108c | 15510 | { |
c5aa993b JM |
15511 | case DW_VIRTUALITY_virtual: |
15512 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15513 | if (cu->language == language_ada) |
a73c6dcd | 15514 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15515 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15516 | break; |
c906108c SS |
15517 | } |
15518 | } | |
c906108c SS |
15519 | } |
15520 | } | |
15521 | ||
7d27a96d TT |
15522 | /* Return true if this member function is a constructor, false |
15523 | otherwise. */ | |
15524 | ||
15525 | static int | |
15526 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15527 | { | |
15528 | const char *fieldname; | |
fe978cb0 | 15529 | const char *type_name; |
7d27a96d TT |
15530 | int len; |
15531 | ||
15532 | if (die->parent == NULL) | |
15533 | return 0; | |
15534 | ||
15535 | if (die->parent->tag != DW_TAG_structure_type | |
15536 | && die->parent->tag != DW_TAG_union_type | |
15537 | && die->parent->tag != DW_TAG_class_type) | |
15538 | return 0; | |
15539 | ||
15540 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15541 | type_name = dwarf2_name (die->parent, cu); |
15542 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15543 | return 0; |
15544 | ||
15545 | len = strlen (fieldname); | |
fe978cb0 PA |
15546 | return (strncmp (fieldname, type_name, len) == 0 |
15547 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15548 | } |
15549 | ||
c906108c SS |
15550 | /* Add a member function to the proper fieldlist. */ |
15551 | ||
15552 | static void | |
107d2387 | 15553 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15554 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15555 | { |
5e22e966 | 15556 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15557 | struct attribute *attr; |
c906108c | 15558 | int i; |
be2daae6 | 15559 | struct fnfieldlist *flp = nullptr; |
c906108c | 15560 | struct fn_field *fnp; |
15d034d0 | 15561 | const char *fieldname; |
f792889a | 15562 | struct type *this_type; |
c906108c | 15563 | |
b4ba55a1 | 15564 | if (cu->language == language_ada) |
a73c6dcd | 15565 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15566 | |
2df3850c | 15567 | /* Get name of member function. */ |
39cbfefa DJ |
15568 | fieldname = dwarf2_name (die, cu); |
15569 | if (fieldname == NULL) | |
2df3850c | 15570 | return; |
c906108c | 15571 | |
c906108c | 15572 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15573 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15574 | { |
27bfe10e | 15575 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15576 | { |
15577 | flp = &fip->fnfieldlists[i]; | |
15578 | break; | |
15579 | } | |
c906108c SS |
15580 | } |
15581 | ||
be2daae6 TT |
15582 | /* Create a new fnfieldlist if necessary. */ |
15583 | if (flp == nullptr) | |
c906108c | 15584 | { |
be2daae6 TT |
15585 | fip->fnfieldlists.emplace_back (); |
15586 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15587 | flp->name = fieldname; |
be2daae6 | 15588 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15589 | } |
15590 | ||
be2daae6 TT |
15591 | /* Create a new member function field and add it to the vector of |
15592 | fnfieldlists. */ | |
15593 | flp->fnfields.emplace_back (); | |
15594 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15595 | |
15596 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15597 | if (cu->language == language_cplus) |
be2daae6 TT |
15598 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15599 | die, cu); | |
3da10d80 KS |
15600 | else |
15601 | { | |
1d06ead6 | 15602 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15603 | fnp->physname = physname ? physname : ""; |
15604 | } | |
15605 | ||
c906108c | 15606 | fnp->type = alloc_type (objfile); |
f792889a | 15607 | this_type = read_type_die (die, cu); |
78134374 | 15608 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15609 | { |
1f704f76 | 15610 | int nparams = this_type->num_fields (); |
c906108c | 15611 | |
f792889a | 15612 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15613 | of the method itself (TYPE_CODE_METHOD). */ |
15614 | smash_to_method_type (fnp->type, type, | |
f792889a | 15615 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15616 | this_type->fields (), |
1f704f76 | 15617 | this_type->num_fields (), |
a409645d | 15618 | this_type->has_varargs ()); |
c906108c SS |
15619 | |
15620 | /* Handle static member functions. | |
dda83cd7 SM |
15621 | Dwarf2 has no clean way to discern C++ static and non-static |
15622 | member functions. G++ helps GDB by marking the first | |
15623 | parameter for non-static member functions (which is the this | |
15624 | pointer) as artificial. We obtain this information from | |
15625 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15626 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15627 | fnp->voffset = VOFFSET_STATIC; |
15628 | } | |
15629 | else | |
b98664d3 | 15630 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15631 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15632 | |
15633 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15634 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15635 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15636 | |
3e43a32a MS |
15637 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15638 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15639 | |
15640 | /* Get accessibility. */ | |
bf23a268 | 15641 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
60d5a603 | 15642 | switch (accessibility) |
c906108c | 15643 | { |
60d5a603 JK |
15644 | case DW_ACCESS_private: |
15645 | fnp->is_private = 1; | |
15646 | break; | |
15647 | case DW_ACCESS_protected: | |
15648 | fnp->is_protected = 1; | |
15649 | break; | |
c906108c SS |
15650 | } |
15651 | ||
b02dede2 | 15652 | /* Check for artificial methods. */ |
e142c38c | 15653 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
c45bc3f8 | 15654 | if (attr && attr->as_boolean ()) |
b02dede2 DJ |
15655 | fnp->is_artificial = 1; |
15656 | ||
e35000a7 TBA |
15657 | /* Check for defaulted methods. */ |
15658 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
e8e5c158 TT |
15659 | if (attr != nullptr) |
15660 | fnp->defaulted = attr->defaulted (); | |
e35000a7 TBA |
15661 | |
15662 | /* Check for deleted methods. */ | |
15663 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
c45bc3f8 | 15664 | if (attr != nullptr && attr->as_boolean ()) |
e35000a7 TBA |
15665 | fnp->is_deleted = 1; |
15666 | ||
7d27a96d TT |
15667 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15668 | ||
0d564a31 | 15669 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15670 | function. For older versions of GCC, this is an offset in the |
15671 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15672 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15673 | to the object address. */ |
15674 | ||
e142c38c | 15675 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15676 | if (attr != nullptr) |
8e19ed76 | 15677 | { |
9d2246fc | 15678 | if (attr->form_is_block () && attr->as_block ()->size > 0) |
dda83cd7 | 15679 | { |
9d2246fc TT |
15680 | struct dwarf_block *block = attr->as_block (); |
15681 | ||
15682 | if (block->data[0] == DW_OP_constu) | |
aec5aa8b TT |
15683 | { |
15684 | /* Old-style GCC. */ | |
9d2246fc | 15685 | fnp->voffset = decode_locdesc (block, cu) + 2; |
aec5aa8b | 15686 | } |
9d2246fc TT |
15687 | else if (block->data[0] == DW_OP_deref |
15688 | || (block->size > 1 | |
15689 | && block->data[0] == DW_OP_deref_size | |
15690 | && block->data[1] == cu->header.addr_size)) | |
aec5aa8b | 15691 | { |
9d2246fc | 15692 | fnp->voffset = decode_locdesc (block, cu); |
aec5aa8b TT |
15693 | if ((fnp->voffset % cu->header.addr_size) != 0) |
15694 | dwarf2_complex_location_expr_complaint (); | |
15695 | else | |
15696 | fnp->voffset /= cu->header.addr_size; | |
15697 | fnp->voffset += 2; | |
15698 | } | |
15699 | else | |
15700 | dwarf2_complex_location_expr_complaint (); | |
15701 | ||
15702 | if (!fnp->fcontext) | |
7e993ebf KS |
15703 | { |
15704 | /* If there is no `this' field and no DW_AT_containing_type, | |
15705 | we cannot actually find a base class context for the | |
15706 | vtable! */ | |
1f704f76 | 15707 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15708 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15709 | { | |
b98664d3 | 15710 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15711 | "function \"%s\" (offset %s)"), |
15712 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15713 | } |
15714 | else | |
15715 | { | |
15716 | fnp->fcontext | |
940da03e | 15717 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15718 | } |
15719 | } | |
aec5aa8b | 15720 | } |
cd6c91b4 | 15721 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 15722 | { |
4d3c2250 | 15723 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 | 15724 | } |
8e19ed76 | 15725 | else |
dda83cd7 | 15726 | { |
4d3c2250 KB |
15727 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15728 | fieldname); | |
dda83cd7 | 15729 | } |
0d564a31 | 15730 | } |
d48cc9dd DJ |
15731 | else |
15732 | { | |
15733 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
23dca5c3 | 15734 | if (attr != nullptr && attr->as_virtuality () != DW_VIRTUALITY_none) |
d48cc9dd DJ |
15735 | { |
15736 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15737 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15738 | "but the vtable offset is not specified"), |
9d8780f0 | 15739 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15740 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15741 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15742 | } | |
15743 | } | |
c906108c SS |
15744 | } |
15745 | ||
15746 | /* Create the vector of member function fields, and attach it to the type. */ | |
15747 | ||
15748 | static void | |
fba45db2 | 15749 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15750 | struct dwarf2_cu *cu) |
c906108c | 15751 | { |
b4ba55a1 | 15752 | if (cu->language == language_ada) |
a73c6dcd | 15753 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15754 | |
c906108c SS |
15755 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15756 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15757 | TYPE_ALLOC (type, |
15758 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15759 | |
be2daae6 | 15760 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15761 | { |
be2daae6 | 15762 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15763 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15764 | |
be2daae6 TT |
15765 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15766 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15767 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15768 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15769 | ||
15770 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15771 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15772 | } |
15773 | ||
be2daae6 | 15774 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15775 | } |
15776 | ||
1168df01 JB |
15777 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15778 | language, zero otherwise. */ | |
15779 | static int | |
15780 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15781 | { | |
15782 | static const char vptr[] = "_vptr"; | |
15783 | ||
9c37b5ae TT |
15784 | /* Look for the C++ form of the vtable. */ |
15785 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15786 | return 1; |
15787 | ||
15788 | return 0; | |
15789 | } | |
15790 | ||
c0dd20ea | 15791 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15792 | functions, with the ABI-specified layout. If TYPE describes |
15793 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15794 | |
15795 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15796 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15797 | |
0b92b5bb TT |
15798 | static void |
15799 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15800 | { |
09e2d7c7 | 15801 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15802 | |
15803 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15804 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15805 | return; |
c0dd20ea DJ |
15806 | |
15807 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15808 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15809 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15810 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15811 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15812 | return; | |
c0dd20ea DJ |
15813 | |
15814 | /* Find the type of the method. */ | |
940da03e | 15815 | pfn_type = type->field (0).type (); |
c0dd20ea | 15816 | if (pfn_type == NULL |
78134374 SM |
15817 | || pfn_type->code () != TYPE_CODE_PTR |
15818 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15819 | return; |
c0dd20ea DJ |
15820 | |
15821 | /* Look for the "this" argument. */ | |
15822 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15823 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15824 | /* || pfn_type->field (0).type () == NULL */ |
15825 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15826 | return; |
c0dd20ea | 15827 | |
940da03e | 15828 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15829 | new_type = alloc_type (objfile); |
09e2d7c7 | 15830 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15831 | pfn_type->fields (), pfn_type->num_fields (), |
a409645d | 15832 | pfn_type->has_varargs ()); |
0b92b5bb | 15833 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15834 | } |
1168df01 | 15835 | |
e26624c6 TT |
15836 | /* Helper for quirk_ada_thick_pointer. If TYPE is an array type that |
15837 | requires rewriting, then copy it and return the updated copy. | |
15838 | Otherwise return nullptr. */ | |
15839 | ||
15840 | static struct type * | |
15841 | rewrite_array_type (struct type *type) | |
15842 | { | |
15843 | if (type->code () != TYPE_CODE_ARRAY) | |
15844 | return nullptr; | |
15845 | ||
15846 | struct type *index_type = type->index_type (); | |
15847 | range_bounds *current_bounds = index_type->bounds (); | |
15848 | ||
15849 | /* Handle multi-dimensional arrays. */ | |
15850 | struct type *new_target = rewrite_array_type (TYPE_TARGET_TYPE (type)); | |
15851 | if (new_target == nullptr) | |
15852 | { | |
15853 | /* Maybe we don't need to rewrite this array. */ | |
15854 | if (current_bounds->low.kind () == PROP_CONST | |
15855 | && current_bounds->high.kind () == PROP_CONST) | |
15856 | return nullptr; | |
15857 | } | |
15858 | ||
15859 | /* Either the target type was rewritten, or the bounds have to be | |
15860 | updated. Either way we want to copy the type and update | |
15861 | everything. */ | |
15862 | struct type *copy = copy_type (type); | |
15863 | int nfields = copy->num_fields (); | |
15864 | field *new_fields | |
15865 | = ((struct field *) TYPE_ZALLOC (copy, | |
15866 | nfields * sizeof (struct field))); | |
15867 | memcpy (new_fields, copy->fields (), nfields * sizeof (struct field)); | |
15868 | copy->set_fields (new_fields); | |
15869 | if (new_target != nullptr) | |
15870 | TYPE_TARGET_TYPE (copy) = new_target; | |
15871 | ||
15872 | struct type *index_copy = copy_type (index_type); | |
15873 | range_bounds *bounds | |
15874 | = (struct range_bounds *) TYPE_ZALLOC (index_copy, | |
15875 | sizeof (range_bounds)); | |
15876 | *bounds = *current_bounds; | |
15877 | bounds->low.set_const_val (1); | |
15878 | bounds->high.set_const_val (0); | |
15879 | index_copy->set_bounds (bounds); | |
15880 | copy->set_index_type (index_copy); | |
15881 | ||
15882 | return copy; | |
15883 | } | |
15884 | ||
57567375 TT |
15885 | /* While some versions of GCC will generate complicated DWARF for an |
15886 | array (see quirk_ada_thick_pointer), more recent versions were | |
15887 | modified to emit an explicit thick pointer structure. However, in | |
15888 | this case, the array still has DWARF expressions for its ranges, | |
15889 | and these must be ignored. */ | |
15890 | ||
15891 | static void | |
15892 | quirk_ada_thick_pointer_struct (struct die_info *die, struct dwarf2_cu *cu, | |
15893 | struct type *type) | |
15894 | { | |
15895 | gdb_assert (cu->language == language_ada); | |
15896 | ||
15897 | /* Check for a structure with two children. */ | |
15898 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) | |
15899 | return; | |
15900 | ||
15901 | /* Check for P_ARRAY and P_BOUNDS members. */ | |
15902 | if (TYPE_FIELD_NAME (type, 0) == NULL | |
15903 | || strcmp (TYPE_FIELD_NAME (type, 0), "P_ARRAY") != 0 | |
15904 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15905 | || strcmp (TYPE_FIELD_NAME (type, 1), "P_BOUNDS") != 0) | |
15906 | return; | |
15907 | ||
15908 | /* Make sure we're looking at a pointer to an array. */ | |
15909 | if (type->field (0).type ()->code () != TYPE_CODE_PTR) | |
15910 | return; | |
57567375 | 15911 | |
e26624c6 TT |
15912 | /* The Ada code already knows how to handle these types, so all that |
15913 | we need to do is turn the bounds into static bounds. However, we | |
15914 | don't want to rewrite existing array or index types in-place, | |
15915 | because those may be referenced in other contexts where this | |
15916 | rewriting is undesirable. */ | |
15917 | struct type *new_ary_type | |
15918 | = rewrite_array_type (TYPE_TARGET_TYPE (type->field (0).type ())); | |
15919 | if (new_ary_type != nullptr) | |
15920 | type->field (0).set_type (lookup_pointer_type (new_ary_type)); | |
57567375 TT |
15921 | } |
15922 | ||
2b4424c3 TT |
15923 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15924 | appropriate error checking and issuing complaints if there is a | |
15925 | problem. */ | |
15926 | ||
15927 | static ULONGEST | |
15928 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15929 | { | |
15930 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15931 | ||
15932 | if (attr == nullptr) | |
15933 | return 0; | |
15934 | ||
cd6c91b4 | 15935 | if (!attr->form_is_constant ()) |
2b4424c3 | 15936 | { |
b98664d3 | 15937 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15938 | " - DIE at %s [in module %s]"), |
15939 | sect_offset_str (die->sect_off), | |
5e22e966 | 15940 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15941 | return 0; |
15942 | } | |
15943 | ||
529908cb TT |
15944 | LONGEST val = attr->constant_value (0); |
15945 | if (val < 0) | |
2b4424c3 | 15946 | { |
529908cb TT |
15947 | complaint (_("DW_AT_alignment value must not be negative" |
15948 | " - DIE at %s [in module %s]"), | |
15949 | sect_offset_str (die->sect_off), | |
15950 | objfile_name (cu->per_objfile->objfile)); | |
15951 | return 0; | |
2b4424c3 | 15952 | } |
529908cb | 15953 | ULONGEST align = val; |
2b4424c3 TT |
15954 | |
15955 | if (align == 0) | |
15956 | { | |
b98664d3 | 15957 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15958 | " - DIE at %s [in module %s]"), |
15959 | sect_offset_str (die->sect_off), | |
5e22e966 | 15960 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15961 | return 0; |
15962 | } | |
15963 | if ((align & (align - 1)) != 0) | |
15964 | { | |
b98664d3 | 15965 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15966 | " - DIE at %s [in module %s]"), |
15967 | sect_offset_str (die->sect_off), | |
5e22e966 | 15968 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15969 | return 0; |
15970 | } | |
15971 | ||
15972 | return align; | |
15973 | } | |
15974 | ||
15975 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15976 | the alignment for TYPE. */ | |
15977 | ||
15978 | static void | |
15979 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15980 | struct type *type) | |
15981 | { | |
15982 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15983 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15984 | " - DIE at %s [in module %s]"), |
15985 | sect_offset_str (die->sect_off), | |
5e22e966 | 15986 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15987 | } |
685b1105 | 15988 | |
e35000a7 TBA |
15989 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15990 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15991 | ||
15992 | static bool | |
15993 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15994 | { | |
15995 | switch (value) | |
15996 | { | |
15997 | case DW_CC_normal: | |
15998 | case DW_CC_pass_by_reference: | |
15999 | case DW_CC_pass_by_value: | |
16000 | return true; | |
16001 | ||
16002 | default: | |
16003 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 16004 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
16005 | return false; |
16006 | } | |
16007 | } | |
16008 | ||
d0922fcf TBA |
16009 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
16010 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
16011 | also according to GNU-specific values (see include/dwarf2.h). */ | |
16012 | ||
16013 | static bool | |
16014 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
16015 | { | |
16016 | switch (value) | |
16017 | { | |
16018 | case DW_CC_normal: | |
16019 | case DW_CC_program: | |
16020 | case DW_CC_nocall: | |
16021 | return true; | |
16022 | ||
16023 | case DW_CC_GNU_renesas_sh: | |
16024 | case DW_CC_GNU_borland_fastcall_i386: | |
16025 | case DW_CC_GDB_IBM_OpenCL: | |
16026 | return true; | |
16027 | ||
16028 | default: | |
16029 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 16030 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
16031 | return false; |
16032 | } | |
16033 | } | |
16034 | ||
c906108c | 16035 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
16036 | (definition) to create a type for the structure or union. Fill in |
16037 | the type's name and general properties; the members will not be | |
83655187 DE |
16038 | processed until process_structure_scope. A symbol table entry for |
16039 | the type will also not be done until process_structure_scope (assuming | |
16040 | the type has a name). | |
c906108c | 16041 | |
c767944b DJ |
16042 | NOTE: we need to call these functions regardless of whether or not the |
16043 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 16044 | structure or union. This gets the type entered into our set of |
83655187 | 16045 | user defined types. */ |
c906108c | 16046 | |
f792889a | 16047 | static struct type * |
134d01f1 | 16048 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16049 | { |
5e22e966 | 16050 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
16051 | struct type *type; |
16052 | struct attribute *attr; | |
15d034d0 | 16053 | const char *name; |
c906108c | 16054 | |
348e048f DE |
16055 | /* If the definition of this type lives in .debug_types, read that type. |
16056 | Don't follow DW_AT_specification though, that will take us back up | |
16057 | the chain and we want to go down. */ | |
052c8bb8 | 16058 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16059 | if (attr != nullptr) |
348e048f | 16060 | { |
ac9ec31b | 16061 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16062 | |
ac9ec31b | 16063 | /* The type's CU may not be the same as CU. |
02142a6c | 16064 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16065 | return set_die_type (die, type, cu); |
16066 | } | |
16067 | ||
c0dd20ea | 16068 | type = alloc_type (objfile); |
c906108c | 16069 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 16070 | |
39cbfefa DJ |
16071 | name = dwarf2_name (die, cu); |
16072 | if (name != NULL) | |
c906108c | 16073 | { |
987504bb | 16074 | if (cu->language == language_cplus |
c44af4eb TT |
16075 | || cu->language == language_d |
16076 | || cu->language == language_rust) | |
63d06c5c | 16077 | { |
15d034d0 | 16078 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
16079 | |
16080 | /* dwarf2_full_name might have already finished building the DIE's | |
16081 | type. If so, there is no need to continue. */ | |
16082 | if (get_die_type (die, cu) != NULL) | |
16083 | return get_die_type (die, cu); | |
16084 | ||
d0e39ea2 | 16085 | type->set_name (full_name); |
63d06c5c DC |
16086 | } |
16087 | else | |
16088 | { | |
d8151005 DJ |
16089 | /* The name is already allocated along with this objfile, so |
16090 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 16091 | type->set_name (name); |
63d06c5c | 16092 | } |
c906108c SS |
16093 | } |
16094 | ||
16095 | if (die->tag == DW_TAG_structure_type) | |
16096 | { | |
67607e24 | 16097 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16098 | } |
16099 | else if (die->tag == DW_TAG_union_type) | |
16100 | { | |
67607e24 | 16101 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
16102 | } |
16103 | else | |
16104 | { | |
67607e24 | 16105 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16106 | } |
16107 | ||
0cc2414c TT |
16108 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
16109 | TYPE_DECLARED_CLASS (type) = 1; | |
16110 | ||
e35000a7 TBA |
16111 | /* Store the calling convention in the type if it's available in |
16112 | the die. Otherwise the calling convention remains set to | |
16113 | the default value DW_CC_normal. */ | |
16114 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
16115 | if (attr != nullptr | |
529908cb | 16116 | && is_valid_DW_AT_calling_convention_for_type (attr->constant_value (0))) |
e35000a7 TBA |
16117 | { |
16118 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16119 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
529908cb | 16120 | = (enum dwarf_calling_convention) (attr->constant_value (0)); |
e35000a7 TBA |
16121 | } |
16122 | ||
e142c38c | 16123 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16124 | if (attr != nullptr) |
c906108c | 16125 | { |
cd6c91b4 | 16126 | if (attr->form_is_constant ()) |
dda83cd7 | 16127 | TYPE_LENGTH (type) = attr->constant_value (0); |
155bfbd3 JB |
16128 | else |
16129 | { | |
f8e89861 | 16130 | struct dynamic_prop prop; |
293e7e51 | 16131 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 16132 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
dda83cd7 | 16133 | TYPE_LENGTH (type) = 0; |
155bfbd3 | 16134 | } |
c906108c SS |
16135 | } |
16136 | else | |
16137 | { | |
16138 | TYPE_LENGTH (type) = 0; | |
16139 | } | |
16140 | ||
2b4424c3 TT |
16141 | maybe_set_alignment (cu, die, type); |
16142 | ||
5230b05a | 16143 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 16144 | { |
5230b05a WT |
16145 | /* ICC<14 does not output the required DW_AT_declaration on |
16146 | incomplete types, but gives them a size of zero. */ | |
b4b73759 | 16147 | type->set_is_stub (true); |
685b1105 JK |
16148 | } |
16149 | else | |
9baccff6 | 16150 | type->set_stub_is_supported (true); |
685b1105 | 16151 | |
dc718098 | 16152 | if (die_is_declaration (die, cu)) |
b4b73759 | 16153 | type->set_is_stub (true); |
a6c727b2 DJ |
16154 | else if (attr == NULL && die->child == NULL |
16155 | && producer_is_realview (cu->producer)) | |
16156 | /* RealView does not output the required DW_AT_declaration | |
16157 | on incomplete types. */ | |
b4b73759 | 16158 | type->set_is_stub (true); |
dc718098 | 16159 | |
c906108c SS |
16160 | /* We need to add the type field to the die immediately so we don't |
16161 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 16162 | type within the structure itself. */ |
1c379e20 | 16163 | set_die_type (die, type, cu); |
c906108c | 16164 | |
7e314c57 JK |
16165 | /* set_die_type should be already done. */ |
16166 | set_descriptive_type (type, die, cu); | |
16167 | ||
c767944b DJ |
16168 | return type; |
16169 | } | |
16170 | ||
9c6a1327 TT |
16171 | static void handle_struct_member_die |
16172 | (struct die_info *child_die, | |
16173 | struct type *type, | |
16174 | struct field_info *fi, | |
16175 | std::vector<struct symbol *> *template_args, | |
16176 | struct dwarf2_cu *cu); | |
16177 | ||
16178 | /* A helper for handle_struct_member_die that handles | |
16179 | DW_TAG_variant_part. */ | |
16180 | ||
16181 | static void | |
16182 | handle_variant_part (struct die_info *die, struct type *type, | |
16183 | struct field_info *fi, | |
16184 | std::vector<struct symbol *> *template_args, | |
16185 | struct dwarf2_cu *cu) | |
16186 | { | |
16187 | variant_part_builder *new_part; | |
16188 | if (fi->current_variant_part == nullptr) | |
16189 | { | |
16190 | fi->variant_parts.emplace_back (); | |
16191 | new_part = &fi->variant_parts.back (); | |
16192 | } | |
16193 | else if (!fi->current_variant_part->processing_variant) | |
16194 | { | |
16195 | complaint (_("nested DW_TAG_variant_part seen " | |
16196 | "- DIE at %s [in module %s]"), | |
16197 | sect_offset_str (die->sect_off), | |
5e22e966 | 16198 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16199 | return; |
16200 | } | |
16201 | else | |
16202 | { | |
16203 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
16204 | current.variant_parts.emplace_back (); | |
16205 | new_part = ¤t.variant_parts.back (); | |
16206 | } | |
16207 | ||
16208 | /* When we recurse, we want callees to add to this new variant | |
16209 | part. */ | |
16210 | scoped_restore save_current_variant_part | |
16211 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
16212 | ||
16213 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16214 | if (discr == NULL) | |
16215 | { | |
16216 | /* It's a univariant form, an extension we support. */ | |
16217 | } | |
16218 | else if (discr->form_is_ref ()) | |
16219 | { | |
16220 | struct dwarf2_cu *target_cu = cu; | |
16221 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16222 | ||
16223 | new_part->discriminant_offset = target_die->sect_off; | |
16224 | } | |
16225 | else | |
16226 | { | |
16227 | complaint (_("DW_AT_discr does not have DIE reference form" | |
16228 | " - DIE at %s [in module %s]"), | |
16229 | sect_offset_str (die->sect_off), | |
5e22e966 | 16230 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16231 | } |
16232 | ||
16233 | for (die_info *child_die = die->child; | |
16234 | child_die != NULL; | |
16235 | child_die = child_die->sibling) | |
16236 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
16237 | } | |
16238 | ||
16239 | /* A helper for handle_struct_member_die that handles | |
16240 | DW_TAG_variant. */ | |
16241 | ||
16242 | static void | |
16243 | handle_variant (struct die_info *die, struct type *type, | |
16244 | struct field_info *fi, | |
16245 | std::vector<struct symbol *> *template_args, | |
16246 | struct dwarf2_cu *cu) | |
16247 | { | |
16248 | if (fi->current_variant_part == nullptr) | |
16249 | { | |
16250 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
16251 | "- DIE at %s [in module %s]"), | |
16252 | sect_offset_str (die->sect_off), | |
5e22e966 | 16253 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16254 | return; |
16255 | } | |
16256 | if (fi->current_variant_part->processing_variant) | |
16257 | { | |
16258 | complaint (_("nested DW_TAG_variant 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 | ||
16265 | scoped_restore save_processing_variant | |
16266 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
16267 | true); | |
16268 | ||
16269 | fi->current_variant_part->variants.emplace_back (); | |
16270 | variant_field &variant = fi->current_variant_part->variants.back (); | |
16271 | variant.first_field = fi->fields.size (); | |
16272 | ||
16273 | /* In a variant we want to get the discriminant and also add a | |
16274 | field for our sole member child. */ | |
16275 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
cae21f8e | 16276 | if (discr == nullptr || !discr->form_is_constant ()) |
9c6a1327 TT |
16277 | { |
16278 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
9d2246fc | 16279 | if (discr == nullptr || discr->as_block ()->size == 0) |
9c6a1327 TT |
16280 | variant.default_branch = true; |
16281 | else | |
9d2246fc | 16282 | variant.discr_list_data = discr->as_block (); |
9c6a1327 TT |
16283 | } |
16284 | else | |
cae21f8e | 16285 | variant.discriminant_value = discr->constant_value (0); |
9c6a1327 TT |
16286 | |
16287 | for (die_info *variant_child = die->child; | |
16288 | variant_child != NULL; | |
16289 | variant_child = variant_child->sibling) | |
16290 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
16291 | ||
16292 | variant.last_field = fi->fields.size (); | |
16293 | } | |
16294 | ||
2ddeaf8a TT |
16295 | /* A helper for process_structure_scope that handles a single member |
16296 | DIE. */ | |
16297 | ||
16298 | static void | |
16299 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
16300 | struct field_info *fi, | |
16301 | std::vector<struct symbol *> *template_args, | |
16302 | struct dwarf2_cu *cu) | |
16303 | { | |
16304 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 16305 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
16306 | { |
16307 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
16308 | should be a DW_TAG_member that is a declaration, but | |
16309 | all versions of G++ as of this writing (so through at | |
16310 | least 3.2.1) incorrectly generate DW_TAG_variable | |
16311 | tags for them instead. */ | |
16312 | dwarf2_add_field (fi, child_die, cu); | |
16313 | } | |
16314 | else if (child_die->tag == DW_TAG_subprogram) | |
16315 | { | |
16316 | /* Rust doesn't have member functions in the C++ sense. | |
16317 | However, it does emit ordinary functions as children | |
16318 | of a struct DIE. */ | |
16319 | if (cu->language == language_rust) | |
16320 | read_func_scope (child_die, cu); | |
16321 | else | |
16322 | { | |
16323 | /* C++ member function. */ | |
16324 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16325 | } | |
16326 | } | |
16327 | else if (child_die->tag == DW_TAG_inheritance) | |
16328 | { | |
16329 | /* C++ base class field. */ | |
16330 | dwarf2_add_field (fi, child_die, cu); | |
16331 | } | |
16332 | else if (type_can_define_types (child_die)) | |
16333 | dwarf2_add_type_defn (fi, child_die, cu); | |
16334 | else if (child_die->tag == DW_TAG_template_type_param | |
16335 | || child_die->tag == DW_TAG_template_value_param) | |
16336 | { | |
16337 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16338 | ||
16339 | if (arg != NULL) | |
16340 | template_args->push_back (arg); | |
16341 | } | |
9c6a1327 TT |
16342 | else if (child_die->tag == DW_TAG_variant_part) |
16343 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 16344 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 16345 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
16346 | } |
16347 | ||
c767944b DJ |
16348 | /* Finish creating a structure or union type, including filling in |
16349 | its members and creating a symbol for it. */ | |
16350 | ||
16351 | static void | |
16352 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16353 | { | |
5e22e966 | 16354 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 16355 | struct die_info *child_die; |
c767944b DJ |
16356 | struct type *type; |
16357 | ||
16358 | type = get_die_type (die, cu); | |
16359 | if (type == NULL) | |
16360 | type = read_structure_type (die, cu); | |
16361 | ||
3e1d3d8c | 16362 | bool has_template_parameters = false; |
e142c38c | 16363 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16364 | { |
16365 | struct field_info fi; | |
2f4732b0 | 16366 | std::vector<struct symbol *> template_args; |
c906108c | 16367 | |
639d11d3 | 16368 | child_die = die->child; |
c906108c SS |
16369 | |
16370 | while (child_die && child_die->tag) | |
16371 | { | |
2ddeaf8a | 16372 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 16373 | child_die = child_die->sibling; |
c906108c SS |
16374 | } |
16375 | ||
34eaf542 | 16376 | /* Attach template arguments to type. */ |
2f4732b0 | 16377 | if (!template_args.empty ()) |
34eaf542 | 16378 | { |
3e1d3d8c | 16379 | has_template_parameters = true; |
34eaf542 | 16380 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16381 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16382 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16383 | = XOBNEWVEC (&objfile->objfile_obstack, |
16384 | struct symbol *, | |
16385 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16386 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16387 | template_args.data (), |
34eaf542 TT |
16388 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16389 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16390 | } |
16391 | ||
c906108c | 16392 | /* Attach fields and member functions to the type. */ |
317f7127 | 16393 | if (fi.nfields () > 0) |
e7c27a73 | 16394 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16395 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16396 | { |
e7c27a73 | 16397 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16398 | |
c5aa993b | 16399 | /* Get the type which refers to the base class (possibly this |
c906108c | 16400 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16401 | class from the DW_AT_containing_type attribute. This use of |
16402 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16403 | |
e142c38c | 16404 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16405 | { |
e7c27a73 | 16406 | struct type *t = die_containing_type (die, cu); |
c906108c | 16407 | |
ae6ae975 | 16408 | set_type_vptr_basetype (type, t); |
c906108c SS |
16409 | if (type == t) |
16410 | { | |
c906108c SS |
16411 | int i; |
16412 | ||
16413 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 16414 | for (i = t->num_fields () - 1; |
c906108c SS |
16415 | i >= TYPE_N_BASECLASSES (t); |
16416 | --i) | |
16417 | { | |
0d5cff50 | 16418 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16419 | |
dda83cd7 | 16420 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16421 | { |
ae6ae975 | 16422 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16423 | break; |
16424 | } | |
16425 | } | |
16426 | ||
16427 | /* Complain if virtual function table field not found. */ | |
16428 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16429 | complaint (_("virtual function table pointer " |
3e43a32a | 16430 | "not found when defining class '%s'"), |
7d93a1e0 | 16431 | type->name () ? type->name () : ""); |
c906108c SS |
16432 | } |
16433 | else | |
16434 | { | |
ae6ae975 | 16435 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16436 | } |
16437 | } | |
f6235d4c | 16438 | else if (cu->producer |
61012eef | 16439 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16440 | { |
16441 | /* The IBM XLC compiler does not provide direct indication | |
dda83cd7 SM |
16442 | of the containing type, but the vtable pointer is |
16443 | always named __vfp. */ | |
f6235d4c EZ |
16444 | |
16445 | int i; | |
16446 | ||
1f704f76 | 16447 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
16448 | i >= TYPE_N_BASECLASSES (type); |
16449 | --i) | |
16450 | { | |
16451 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16452 | { | |
ae6ae975 DE |
16453 | set_type_vptr_fieldno (type, i); |
16454 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16455 | break; |
16456 | } | |
16457 | } | |
16458 | } | |
c906108c | 16459 | } |
98751a41 JK |
16460 | |
16461 | /* Copy fi.typedef_field_list linked list elements content into the | |
16462 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16463 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16464 | { |
be2daae6 | 16465 | int count = fi.typedef_field_list.size (); |
98751a41 | 16466 | |
a0d7a4ff | 16467 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16468 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16469 | = ((struct decl_field *) |
be2daae6 TT |
16470 | TYPE_ALLOC (type, |
16471 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16472 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16473 | |
be2daae6 TT |
16474 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16475 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16476 | } |
c767944b | 16477 | |
883fd55a KS |
16478 | /* Copy fi.nested_types_list linked list elements content into the |
16479 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16480 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16481 | { |
be2daae6 | 16482 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16483 | |
16484 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16485 | TYPE_NESTED_TYPES_ARRAY (type) | |
16486 | = ((struct decl_field *) | |
be2daae6 TT |
16487 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16488 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16489 | |
be2daae6 TT |
16490 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16491 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16492 | } |
c906108c | 16493 | } |
63d06c5c | 16494 | |
bb5ed363 | 16495 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16496 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16497 | cu->rust_unions.push_back (type); | |
57567375 TT |
16498 | else if (cu->language == language_ada) |
16499 | quirk_ada_thick_pointer_struct (die, cu, type); | |
0b92b5bb | 16500 | |
90aeadfc DC |
16501 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16502 | snapshots) has been known to create a die giving a declaration | |
16503 | for a class that has, as a child, a die giving a definition for a | |
16504 | nested class. So we have to process our children even if the | |
16505 | current die is a declaration. Normally, of course, a declaration | |
16506 | won't have any children at all. */ | |
134d01f1 | 16507 | |
ca040673 DE |
16508 | child_die = die->child; |
16509 | ||
90aeadfc DC |
16510 | while (child_die != NULL && child_die->tag) |
16511 | { | |
16512 | if (child_die->tag == DW_TAG_member | |
16513 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16514 | || child_die->tag == DW_TAG_inheritance |
16515 | || child_die->tag == DW_TAG_template_value_param | |
16516 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16517 | { |
90aeadfc | 16518 | /* Do nothing. */ |
134d01f1 | 16519 | } |
90aeadfc DC |
16520 | else |
16521 | process_die (child_die, cu); | |
134d01f1 | 16522 | |
436c571c | 16523 | child_die = child_die->sibling; |
134d01f1 DJ |
16524 | } |
16525 | ||
fa4028e9 JB |
16526 | /* Do not consider external references. According to the DWARF standard, |
16527 | these DIEs are identified by the fact that they have no byte_size | |
16528 | attribute, and a declaration attribute. */ | |
16529 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16530 | || !die_is_declaration (die, cu) |
16531 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16532 | { |
16533 | struct symbol *sym = new_symbol (die, type, cu); | |
16534 | ||
16535 | if (has_template_parameters) | |
16536 | { | |
a776957c TT |
16537 | struct symtab *symtab; |
16538 | if (sym != nullptr) | |
16539 | symtab = symbol_symtab (sym); | |
16540 | else if (cu->line_header != nullptr) | |
16541 | { | |
16542 | /* Any related symtab will do. */ | |
16543 | symtab | |
7ba99d21 | 16544 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16545 | } |
16546 | else | |
16547 | { | |
16548 | symtab = nullptr; | |
16549 | complaint (_("could not find suitable " | |
16550 | "symtab for template parameter" | |
16551 | " - DIE at %s [in module %s]"), | |
16552 | sect_offset_str (die->sect_off), | |
16553 | objfile_name (objfile)); | |
16554 | } | |
16555 | ||
16556 | if (symtab != nullptr) | |
16557 | { | |
16558 | /* Make sure that the symtab is set on the new symbols. | |
16559 | Even though they don't appear in this symtab directly, | |
16560 | other parts of gdb assume that symbols do, and this is | |
16561 | reasonably true. */ | |
16562 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16563 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16564 | } | |
3e1d3d8c TT |
16565 | } |
16566 | } | |
134d01f1 DJ |
16567 | } |
16568 | ||
ed6acedd TT |
16569 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16570 | type, update TYPE using some information only available in DIE's | |
16571 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16572 | |
16573 | static void | |
16574 | update_enumeration_type_from_children (struct die_info *die, | |
16575 | struct type *type, | |
16576 | struct dwarf2_cu *cu) | |
16577 | { | |
60f7655a | 16578 | struct die_info *child_die; |
55426c9d JB |
16579 | int unsigned_enum = 1; |
16580 | int flag_enum = 1; | |
55426c9d | 16581 | |
8268c778 | 16582 | auto_obstack obstack; |
ed6acedd | 16583 | std::vector<struct field> fields; |
55426c9d | 16584 | |
60f7655a DE |
16585 | for (child_die = die->child; |
16586 | child_die != NULL && child_die->tag; | |
436c571c | 16587 | child_die = child_die->sibling) |
55426c9d JB |
16588 | { |
16589 | struct attribute *attr; | |
16590 | LONGEST value; | |
16591 | const gdb_byte *bytes; | |
16592 | struct dwarf2_locexpr_baton *baton; | |
16593 | const char *name; | |
60f7655a | 16594 | |
55426c9d JB |
16595 | if (child_die->tag != DW_TAG_enumerator) |
16596 | continue; | |
16597 | ||
16598 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16599 | if (attr == NULL) | |
16600 | continue; | |
16601 | ||
16602 | name = dwarf2_name (child_die, cu); | |
16603 | if (name == NULL) | |
16604 | name = "<anonymous enumerator>"; | |
16605 | ||
16606 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16607 | &value, &bytes, &baton); | |
16608 | if (value < 0) | |
16609 | { | |
16610 | unsigned_enum = 0; | |
16611 | flag_enum = 0; | |
16612 | } | |
55426c9d | 16613 | else |
edd45eb0 SM |
16614 | { |
16615 | if (count_one_bits_ll (value) >= 2) | |
16616 | flag_enum = 0; | |
edd45eb0 | 16617 | } |
55426c9d | 16618 | |
ed6acedd TT |
16619 | fields.emplace_back (); |
16620 | struct field &field = fields.back (); | |
16621 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16622 | SET_FIELD_ENUMVAL (field, value); | |
16623 | } | |
16624 | ||
16625 | if (!fields.empty ()) | |
16626 | { | |
5e33d5f4 | 16627 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16628 | type->set_fields |
16629 | ((struct field *) | |
16630 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16631 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16632 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16633 | } |
16634 | ||
16635 | if (unsigned_enum) | |
653223d3 SM |
16636 | type->set_is_unsigned (true); |
16637 | ||
55426c9d JB |
16638 | if (flag_enum) |
16639 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16640 | } |
16641 | ||
134d01f1 DJ |
16642 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16643 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16644 | |
f792889a | 16645 | static struct type * |
134d01f1 | 16646 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16647 | { |
5e22e966 | 16648 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16649 | struct type *type; |
c906108c | 16650 | struct attribute *attr; |
0114d602 | 16651 | const char *name; |
134d01f1 | 16652 | |
348e048f DE |
16653 | /* If the definition of this type lives in .debug_types, read that type. |
16654 | Don't follow DW_AT_specification though, that will take us back up | |
16655 | the chain and we want to go down. */ | |
052c8bb8 | 16656 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16657 | if (attr != nullptr) |
348e048f | 16658 | { |
ac9ec31b | 16659 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16660 | |
ac9ec31b | 16661 | /* The type's CU may not be the same as CU. |
02142a6c | 16662 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16663 | return set_die_type (die, type, cu); |
16664 | } | |
16665 | ||
c906108c SS |
16666 | type = alloc_type (objfile); |
16667 | ||
67607e24 | 16668 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16669 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16670 | if (name != NULL) |
d0e39ea2 | 16671 | type->set_name (name); |
c906108c | 16672 | |
0626fc76 TT |
16673 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16674 | if (attr != NULL) | |
16675 | { | |
16676 | struct type *underlying_type = die_type (die, cu); | |
16677 | ||
16678 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16679 | } | |
16680 | ||
e142c38c | 16681 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16682 | if (attr != nullptr) |
c906108c | 16683 | { |
529908cb | 16684 | TYPE_LENGTH (type) = attr->constant_value (0); |
c906108c SS |
16685 | } |
16686 | else | |
16687 | { | |
16688 | TYPE_LENGTH (type) = 0; | |
16689 | } | |
16690 | ||
2b4424c3 TT |
16691 | maybe_set_alignment (cu, die, type); |
16692 | ||
137033e9 JB |
16693 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16694 | declared as private in the package spec, and then defined only | |
16695 | inside the package body. Such types are known as Taft Amendment | |
16696 | Types. When another package uses such a type, an incomplete DIE | |
16697 | may be generated by the compiler. */ | |
02eb380e | 16698 | if (die_is_declaration (die, cu)) |
b4b73759 | 16699 | type->set_is_stub (true); |
02eb380e | 16700 | |
0626fc76 TT |
16701 | /* If this type has an underlying type that is not a stub, then we |
16702 | may use its attributes. We always use the "unsigned" attribute | |
16703 | in this situation, because ordinarily we guess whether the type | |
16704 | is unsigned -- but the guess can be wrong and the underlying type | |
16705 | can tell us the reality. However, we defer to a local size | |
16706 | attribute if one exists, because this lets the compiler override | |
16707 | the underlying type if needed. */ | |
e46d3488 | 16708 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_TARGET_TYPE (type)->is_stub ()) |
0626fc76 | 16709 | { |
9e7c9a03 HD |
16710 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16711 | underlying_type = check_typedef (underlying_type); | |
653223d3 SM |
16712 | |
16713 | type->set_is_unsigned (underlying_type->is_unsigned ()); | |
16714 | ||
0626fc76 | 16715 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16716 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
653223d3 | 16717 | |
2b4424c3 | 16718 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16719 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16720 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16721 | } |
16722 | ||
3d567982 TT |
16723 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16724 | ||
ed6acedd TT |
16725 | set_die_type (die, type, cu); |
16726 | ||
16727 | /* Finish the creation of this type by using the enum's children. | |
16728 | Note that, as usual, this must come after set_die_type to avoid | |
16729 | infinite recursion when trying to compute the names of the | |
16730 | enumerators. */ | |
16731 | update_enumeration_type_from_children (die, type, cu); | |
16732 | ||
16733 | return type; | |
134d01f1 DJ |
16734 | } |
16735 | ||
16736 | /* Given a pointer to a die which begins an enumeration, process all | |
16737 | the dies that define the members of the enumeration, and create the | |
16738 | symbol for the enumeration type. | |
16739 | ||
16740 | NOTE: We reverse the order of the element list. */ | |
16741 | ||
16742 | static void | |
16743 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16744 | { | |
f792889a | 16745 | struct type *this_type; |
134d01f1 | 16746 | |
f792889a DJ |
16747 | this_type = get_die_type (die, cu); |
16748 | if (this_type == NULL) | |
16749 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16750 | |
639d11d3 | 16751 | if (die->child != NULL) |
c906108c | 16752 | { |
9dc481d3 | 16753 | struct die_info *child_die; |
15d034d0 | 16754 | const char *name; |
9dc481d3 | 16755 | |
639d11d3 | 16756 | child_die = die->child; |
c906108c SS |
16757 | while (child_die && child_die->tag) |
16758 | { | |
16759 | if (child_die->tag != DW_TAG_enumerator) | |
16760 | { | |
e7c27a73 | 16761 | process_die (child_die, cu); |
c906108c SS |
16762 | } |
16763 | else | |
16764 | { | |
39cbfefa DJ |
16765 | name = dwarf2_name (child_die, cu); |
16766 | if (name) | |
ed6acedd | 16767 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16768 | } |
16769 | ||
436c571c | 16770 | child_die = child_die->sibling; |
c906108c | 16771 | } |
c906108c | 16772 | } |
134d01f1 | 16773 | |
6c83ed52 TT |
16774 | /* If we are reading an enum from a .debug_types unit, and the enum |
16775 | is a declaration, and the enum is not the signatured type in the | |
16776 | unit, then we do not want to add a symbol for it. Adding a | |
16777 | symbol would in some cases obscure the true definition of the | |
16778 | enum, giving users an incomplete type when the definition is | |
16779 | actually available. Note that we do not want to do this for all | |
16780 | enums which are just declarations, because C++0x allows forward | |
16781 | enum declarations. */ | |
3019eac3 | 16782 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16783 | && die_is_declaration (die, cu)) |
16784 | { | |
52dc124a | 16785 | struct signatured_type *sig_type; |
6c83ed52 | 16786 | |
c0f78cd4 | 16787 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16788 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16789 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16790 | return; |
16791 | } | |
16792 | ||
f792889a | 16793 | new_symbol (die, this_type, cu); |
c906108c SS |
16794 | } |
16795 | ||
57567375 TT |
16796 | /* Helper function for quirk_ada_thick_pointer that examines a bounds |
16797 | expression for an index type and finds the corresponding field | |
16798 | offset in the hidden "P_BOUNDS" structure. Returns true on success | |
16799 | and updates *FIELD, false if it fails to recognize an | |
16800 | expression. */ | |
16801 | ||
16802 | static bool | |
16803 | recognize_bound_expression (struct die_info *die, enum dwarf_attribute name, | |
16804 | int *bounds_offset, struct field *field, | |
16805 | struct dwarf2_cu *cu) | |
16806 | { | |
16807 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16808 | if (attr == nullptr || !attr->form_is_block ()) | |
16809 | return false; | |
16810 | ||
16811 | const struct dwarf_block *block = attr->as_block (); | |
16812 | const gdb_byte *start = block->data; | |
16813 | const gdb_byte *end = block->data + block->size; | |
16814 | ||
16815 | /* The expression to recognize generally looks like: | |
16816 | ||
16817 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16818 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16819 | ||
16820 | However, the second "plus_uconst" may be missing: | |
16821 | ||
16822 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16823 | DW_OP_deref_size: 4) | |
16824 | ||
16825 | This happens when the field is at the start of the structure. | |
16826 | ||
16827 | Also, the final deref may not be sized: | |
16828 | ||
16829 | (DW_OP_push_object_address; DW_OP_plus_uconst: 4; DW_OP_deref; | |
16830 | DW_OP_deref) | |
16831 | ||
16832 | This happens when the size of the index type happens to be the | |
16833 | same as the architecture's word size. This can occur with or | |
16834 | without the second plus_uconst. */ | |
16835 | ||
16836 | if (end - start < 2) | |
16837 | return false; | |
16838 | if (*start++ != DW_OP_push_object_address) | |
16839 | return false; | |
16840 | if (*start++ != DW_OP_plus_uconst) | |
16841 | return false; | |
16842 | ||
16843 | uint64_t this_bound_off; | |
16844 | start = gdb_read_uleb128 (start, end, &this_bound_off); | |
16845 | if (start == nullptr || (int) this_bound_off != this_bound_off) | |
16846 | return false; | |
16847 | /* Update *BOUNDS_OFFSET if needed, or alternatively verify that it | |
16848 | is consistent among all bounds. */ | |
16849 | if (*bounds_offset == -1) | |
16850 | *bounds_offset = this_bound_off; | |
16851 | else if (*bounds_offset != this_bound_off) | |
16852 | return false; | |
16853 | ||
16854 | if (start == end || *start++ != DW_OP_deref) | |
16855 | return false; | |
16856 | ||
16857 | int offset = 0; | |
16858 | if (start ==end) | |
16859 | return false; | |
16860 | else if (*start == DW_OP_deref_size || *start == DW_OP_deref) | |
16861 | { | |
16862 | /* This means an offset of 0. */ | |
16863 | } | |
16864 | else if (*start++ != DW_OP_plus_uconst) | |
16865 | return false; | |
16866 | else | |
16867 | { | |
16868 | /* The size is the parameter to DW_OP_plus_uconst. */ | |
16869 | uint64_t val; | |
16870 | start = gdb_read_uleb128 (start, end, &val); | |
16871 | if (start == nullptr) | |
16872 | return false; | |
16873 | if ((int) val != val) | |
16874 | return false; | |
16875 | offset = val; | |
16876 | } | |
16877 | ||
16878 | if (start == end) | |
16879 | return false; | |
16880 | ||
16881 | uint64_t size; | |
16882 | if (*start == DW_OP_deref_size) | |
16883 | { | |
16884 | start = gdb_read_uleb128 (start + 1, end, &size); | |
16885 | if (start == nullptr) | |
16886 | return false; | |
16887 | } | |
16888 | else if (*start == DW_OP_deref) | |
16889 | { | |
16890 | size = cu->header.addr_size; | |
16891 | ++start; | |
16892 | } | |
16893 | else | |
16894 | return false; | |
16895 | ||
16896 | SET_FIELD_BITPOS (*field, 8 * offset); | |
16897 | if (size != TYPE_LENGTH (field->type ())) | |
16898 | FIELD_BITSIZE (*field) = 8 * size; | |
16899 | ||
16900 | return true; | |
16901 | } | |
16902 | ||
16903 | /* With -fgnat-encodings=minimal, gcc will emit some unusual DWARF for | |
16904 | some kinds of Ada arrays: | |
16905 | ||
16906 | <1><11db>: Abbrev Number: 7 (DW_TAG_array_type) | |
16907 | <11dc> DW_AT_name : (indirect string, offset: 0x1bb8): string | |
16908 | <11e0> DW_AT_data_location: 2 byte block: 97 6 | |
16909 | (DW_OP_push_object_address; DW_OP_deref) | |
16910 | <11e3> DW_AT_type : <0x1173> | |
16911 | <11e7> DW_AT_sibling : <0x1201> | |
16912 | <2><11eb>: Abbrev Number: 8 (DW_TAG_subrange_type) | |
16913 | <11ec> DW_AT_type : <0x1206> | |
16914 | <11f0> DW_AT_lower_bound : 6 byte block: 97 23 8 6 94 4 | |
16915 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16916 | DW_OP_deref_size: 4) | |
16917 | <11f7> DW_AT_upper_bound : 8 byte block: 97 23 8 6 23 4 94 4 | |
16918 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16919 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16920 | ||
16921 | This actually represents a "thick pointer", which is a structure | |
16922 | with two elements: one that is a pointer to the array data, and one | |
16923 | that is a pointer to another structure; this second structure holds | |
16924 | the array bounds. | |
16925 | ||
16926 | This returns a new type on success, or nullptr if this didn't | |
16927 | recognize the type. */ | |
16928 | ||
16929 | static struct type * | |
16930 | quirk_ada_thick_pointer (struct die_info *die, struct dwarf2_cu *cu, | |
16931 | struct type *type) | |
16932 | { | |
16933 | struct attribute *attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
16934 | /* So far we've only seen this with block form. */ | |
16935 | if (attr == nullptr || !attr->form_is_block ()) | |
16936 | return nullptr; | |
16937 | ||
16938 | /* Note that this will fail if the structure layout is changed by | |
16939 | the compiler. However, we have no good way to recognize some | |
16940 | other layout, because we don't know what expression the compiler | |
16941 | might choose to emit should this happen. */ | |
16942 | struct dwarf_block *blk = attr->as_block (); | |
16943 | if (blk->size != 2 | |
16944 | || blk->data[0] != DW_OP_push_object_address | |
16945 | || blk->data[1] != DW_OP_deref) | |
16946 | return nullptr; | |
16947 | ||
16948 | int bounds_offset = -1; | |
16949 | int max_align = -1; | |
16950 | std::vector<struct field> range_fields; | |
16951 | for (struct die_info *child_die = die->child; | |
16952 | child_die; | |
16953 | child_die = child_die->sibling) | |
16954 | { | |
16955 | if (child_die->tag == DW_TAG_subrange_type) | |
16956 | { | |
16957 | struct type *underlying = read_subrange_index_type (child_die, cu); | |
16958 | ||
16959 | int this_align = type_align (underlying); | |
16960 | if (this_align > max_align) | |
16961 | max_align = this_align; | |
16962 | ||
16963 | range_fields.emplace_back (); | |
16964 | range_fields.emplace_back (); | |
16965 | ||
16966 | struct field &lower = range_fields[range_fields.size () - 2]; | |
16967 | struct field &upper = range_fields[range_fields.size () - 1]; | |
16968 | ||
16969 | lower.set_type (underlying); | |
16970 | FIELD_ARTIFICIAL (lower) = 1; | |
16971 | ||
16972 | upper.set_type (underlying); | |
16973 | FIELD_ARTIFICIAL (upper) = 1; | |
16974 | ||
16975 | if (!recognize_bound_expression (child_die, DW_AT_lower_bound, | |
16976 | &bounds_offset, &lower, cu) | |
16977 | || !recognize_bound_expression (child_die, DW_AT_upper_bound, | |
16978 | &bounds_offset, &upper, cu)) | |
16979 | return nullptr; | |
16980 | } | |
16981 | } | |
16982 | ||
16983 | /* This shouldn't really happen, but double-check that we found | |
16984 | where the bounds are stored. */ | |
16985 | if (bounds_offset == -1) | |
16986 | return nullptr; | |
16987 | ||
16988 | struct objfile *objfile = cu->per_objfile->objfile; | |
16989 | for (int i = 0; i < range_fields.size (); i += 2) | |
16990 | { | |
16991 | char name[20]; | |
16992 | ||
16993 | /* Set the name of each field in the bounds. */ | |
16994 | xsnprintf (name, sizeof (name), "LB%d", i / 2); | |
16995 | FIELD_NAME (range_fields[i]) = objfile->intern (name); | |
16996 | xsnprintf (name, sizeof (name), "UB%d", i / 2); | |
16997 | FIELD_NAME (range_fields[i + 1]) = objfile->intern (name); | |
16998 | } | |
16999 | ||
17000 | struct type *bounds = alloc_type (objfile); | |
17001 | bounds->set_code (TYPE_CODE_STRUCT); | |
17002 | ||
17003 | bounds->set_num_fields (range_fields.size ()); | |
17004 | bounds->set_fields | |
17005 | ((struct field *) TYPE_ALLOC (bounds, (bounds->num_fields () | |
17006 | * sizeof (struct field)))); | |
17007 | memcpy (bounds->fields (), range_fields.data (), | |
17008 | bounds->num_fields () * sizeof (struct field)); | |
17009 | ||
17010 | int last_fieldno = range_fields.size () - 1; | |
17011 | int bounds_size = (TYPE_FIELD_BITPOS (bounds, last_fieldno) / 8 | |
17012 | + TYPE_LENGTH (bounds->field (last_fieldno).type ())); | |
17013 | TYPE_LENGTH (bounds) = align_up (bounds_size, max_align); | |
17014 | ||
17015 | /* Rewrite the existing array type in place. Specifically, we | |
17016 | remove any dynamic properties we might have read, and we replace | |
17017 | the index types. */ | |
17018 | struct type *iter = type; | |
17019 | for (int i = 0; i < range_fields.size (); i += 2) | |
17020 | { | |
17021 | gdb_assert (iter->code () == TYPE_CODE_ARRAY); | |
17022 | iter->main_type->dyn_prop_list = nullptr; | |
17023 | iter->set_index_type | |
17024 | (create_static_range_type (NULL, bounds->field (i).type (), 1, 0)); | |
17025 | iter = TYPE_TARGET_TYPE (iter); | |
17026 | } | |
17027 | ||
17028 | struct type *result = alloc_type (objfile); | |
17029 | result->set_code (TYPE_CODE_STRUCT); | |
17030 | ||
17031 | result->set_num_fields (2); | |
17032 | result->set_fields | |
17033 | ((struct field *) TYPE_ZALLOC (result, (result->num_fields () | |
17034 | * sizeof (struct field)))); | |
17035 | ||
17036 | /* The names are chosen to coincide with what the compiler does with | |
17037 | -fgnat-encodings=all, which the Ada code in gdb already | |
17038 | understands. */ | |
17039 | TYPE_FIELD_NAME (result, 0) = "P_ARRAY"; | |
17040 | result->field (0).set_type (lookup_pointer_type (type)); | |
17041 | ||
17042 | TYPE_FIELD_NAME (result, 1) = "P_BOUNDS"; | |
17043 | result->field (1).set_type (lookup_pointer_type (bounds)); | |
17044 | SET_FIELD_BITPOS (result->field (1), 8 * bounds_offset); | |
17045 | ||
17046 | result->set_name (type->name ()); | |
17047 | TYPE_LENGTH (result) = (TYPE_LENGTH (result->field (0).type ()) | |
17048 | + TYPE_LENGTH (result->field (1).type ())); | |
17049 | ||
17050 | return result; | |
17051 | } | |
17052 | ||
c906108c SS |
17053 | /* Extract all information from a DW_TAG_array_type DIE and put it in |
17054 | the DIE's type field. For now, this only handles one dimensional | |
17055 | arrays. */ | |
17056 | ||
f792889a | 17057 | static struct type * |
e7c27a73 | 17058 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17059 | { |
5e22e966 | 17060 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 17061 | struct die_info *child_die; |
7e314c57 | 17062 | struct type *type; |
c906108c | 17063 | struct type *element_type, *range_type, *index_type; |
c906108c | 17064 | struct attribute *attr; |
15d034d0 | 17065 | const char *name; |
a405673c | 17066 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 17067 | unsigned int bit_stride = 0; |
c906108c | 17068 | |
e7c27a73 | 17069 | element_type = die_type (die, cu); |
c906108c | 17070 | |
7e314c57 JK |
17071 | /* The die_type call above may have already set the type for this DIE. */ |
17072 | type = get_die_type (die, cu); | |
17073 | if (type) | |
17074 | return type; | |
17075 | ||
dc53a7ad JB |
17076 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
17077 | if (attr != NULL) | |
a405673c JB |
17078 | { |
17079 | int stride_ok; | |
293e7e51 | 17080 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
17081 | |
17082 | byte_stride_prop | |
17083 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
17084 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
17085 | prop_type); | |
a405673c JB |
17086 | if (!stride_ok) |
17087 | { | |
b98664d3 | 17088 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
17089 | " - DIE at %s [in module %s]"), |
17090 | sect_offset_str (die->sect_off), | |
5e22e966 | 17091 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
17092 | /* Ignore this attribute. We will likely not be able to print |
17093 | arrays of this type correctly, but there is little we can do | |
17094 | to help if we cannot read the attribute's value. */ | |
17095 | byte_stride_prop = NULL; | |
17096 | } | |
17097 | } | |
dc53a7ad JB |
17098 | |
17099 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17100 | if (attr != NULL) | |
529908cb | 17101 | bit_stride = attr->constant_value (0); |
dc53a7ad | 17102 | |
c906108c SS |
17103 | /* Irix 6.2 native cc creates array types without children for |
17104 | arrays with unspecified length. */ | |
639d11d3 | 17105 | if (die->child == NULL) |
c906108c | 17106 | { |
46bf5051 | 17107 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17108 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 17109 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 17110 | byte_stride_prop, bit_stride); |
f792889a | 17111 | return set_die_type (die, type, cu); |
c906108c SS |
17112 | } |
17113 | ||
791afaa2 | 17114 | std::vector<struct type *> range_types; |
639d11d3 | 17115 | child_die = die->child; |
c906108c SS |
17116 | while (child_die && child_die->tag) |
17117 | { | |
17118 | if (child_die->tag == DW_TAG_subrange_type) | |
17119 | { | |
f792889a | 17120 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 17121 | |
dda83cd7 SM |
17122 | if (child_type != NULL) |
17123 | { | |
0963b4bd | 17124 | /* The range type was succesfully read. Save it for the |
dda83cd7 | 17125 | array type creation. */ |
791afaa2 | 17126 | range_types.push_back (child_type); |
dda83cd7 | 17127 | } |
c906108c | 17128 | } |
436c571c | 17129 | child_die = child_die->sibling; |
c906108c SS |
17130 | } |
17131 | ||
cf2b2075 TV |
17132 | if (range_types.empty ()) |
17133 | { | |
17134 | complaint (_("unable to find array range - DIE at %s [in module %s]"), | |
17135 | sect_offset_str (die->sect_off), | |
17136 | objfile_name (cu->per_objfile->objfile)); | |
17137 | return NULL; | |
17138 | } | |
17139 | ||
c906108c SS |
17140 | /* Dwarf2 dimensions are output from left to right, create the |
17141 | necessary array types in backwards order. */ | |
7ca2d3a3 | 17142 | |
c906108c | 17143 | type = element_type; |
7ca2d3a3 DL |
17144 | |
17145 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
17146 | { | |
17147 | int i = 0; | |
9a619af0 | 17148 | |
791afaa2 | 17149 | while (i < range_types.size ()) |
10f6a3ad TT |
17150 | { |
17151 | type = create_array_type_with_stride (NULL, type, range_types[i++], | |
17152 | byte_stride_prop, bit_stride); | |
17153 | bit_stride = 0; | |
17154 | byte_stride_prop = nullptr; | |
17155 | } | |
7ca2d3a3 DL |
17156 | } |
17157 | else | |
17158 | { | |
791afaa2 | 17159 | size_t ndim = range_types.size (); |
7ca2d3a3 | 17160 | while (ndim-- > 0) |
10f6a3ad TT |
17161 | { |
17162 | type = create_array_type_with_stride (NULL, type, range_types[ndim], | |
17163 | byte_stride_prop, bit_stride); | |
17164 | bit_stride = 0; | |
17165 | byte_stride_prop = nullptr; | |
17166 | } | |
7ca2d3a3 | 17167 | } |
c906108c | 17168 | |
cf2b2075 TV |
17169 | gdb_assert (type != element_type); |
17170 | ||
f5f8a009 EZ |
17171 | /* Understand Dwarf2 support for vector types (like they occur on |
17172 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
17173 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
17174 | custom vendor extension. The main difference between a regular | |
17175 | array and the vector variant is that vectors are passed by value | |
17176 | to functions. */ | |
e142c38c | 17177 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 17178 | if (attr != nullptr) |
ea37ba09 | 17179 | make_vector_type (type); |
f5f8a009 | 17180 | |
dbc98a8b KW |
17181 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
17182 | implementation may choose to implement triple vectors using this | |
17183 | attribute. */ | |
17184 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb | 17185 | if (attr != nullptr && attr->form_is_unsigned ()) |
dbc98a8b | 17186 | { |
529908cb TT |
17187 | if (attr->as_unsigned () >= TYPE_LENGTH (type)) |
17188 | TYPE_LENGTH (type) = attr->as_unsigned (); | |
dbc98a8b | 17189 | else |
b98664d3 | 17190 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 17191 | "than the total size of elements")); |
dbc98a8b KW |
17192 | } |
17193 | ||
39cbfefa DJ |
17194 | name = dwarf2_name (die, cu); |
17195 | if (name) | |
d0e39ea2 | 17196 | type->set_name (name); |
6e70227d | 17197 | |
2b4424c3 TT |
17198 | maybe_set_alignment (cu, die, type); |
17199 | ||
57567375 TT |
17200 | struct type *replacement_type = nullptr; |
17201 | if (cu->language == language_ada) | |
17202 | { | |
17203 | replacement_type = quirk_ada_thick_pointer (die, cu, type); | |
17204 | if (replacement_type != nullptr) | |
17205 | type = replacement_type; | |
17206 | } | |
17207 | ||
0963b4bd | 17208 | /* Install the type in the die. */ |
57567375 | 17209 | set_die_type (die, type, cu, replacement_type != nullptr); |
7e314c57 JK |
17210 | |
17211 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17212 | set_descriptive_type (type, die, cu); |
17213 | ||
7e314c57 | 17214 | return type; |
c906108c SS |
17215 | } |
17216 | ||
7ca2d3a3 | 17217 | static enum dwarf_array_dim_ordering |
6e70227d | 17218 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
17219 | { |
17220 | struct attribute *attr; | |
17221 | ||
17222 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
17223 | ||
435d3d88 | 17224 | if (attr != nullptr) |
1bc397c5 TT |
17225 | { |
17226 | LONGEST val = attr->constant_value (-1); | |
17227 | if (val == DW_ORD_row_major || val == DW_ORD_col_major) | |
17228 | return (enum dwarf_array_dim_ordering) val; | |
17229 | } | |
7ca2d3a3 | 17230 | |
0963b4bd MS |
17231 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
17232 | opposite order to the dwarf2 specification, but data is still | |
17233 | laid out as per normal fortran. | |
7ca2d3a3 | 17234 | |
0963b4bd MS |
17235 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
17236 | version checking. */ | |
7ca2d3a3 | 17237 | |
905e0470 PM |
17238 | if (cu->language == language_fortran |
17239 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
17240 | { |
17241 | return DW_ORD_row_major; | |
17242 | } | |
17243 | ||
3a3440fb | 17244 | switch (cu->language_defn->array_ordering ()) |
7ca2d3a3 DL |
17245 | { |
17246 | case array_column_major: | |
17247 | return DW_ORD_col_major; | |
17248 | case array_row_major: | |
17249 | default: | |
17250 | return DW_ORD_row_major; | |
17251 | }; | |
17252 | } | |
17253 | ||
72019c9c | 17254 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 17255 | the DIE's type field. */ |
72019c9c | 17256 | |
f792889a | 17257 | static struct type * |
72019c9c GM |
17258 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
17259 | { | |
7e314c57 JK |
17260 | struct type *domain_type, *set_type; |
17261 | struct attribute *attr; | |
f792889a | 17262 | |
7e314c57 JK |
17263 | domain_type = die_type (die, cu); |
17264 | ||
17265 | /* The die_type call above may have already set the type for this DIE. */ | |
17266 | set_type = get_die_type (die, cu); | |
17267 | if (set_type) | |
17268 | return set_type; | |
17269 | ||
17270 | set_type = create_set_type (NULL, domain_type); | |
17271 | ||
17272 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb TT |
17273 | if (attr != nullptr && attr->form_is_unsigned ()) |
17274 | TYPE_LENGTH (set_type) = attr->as_unsigned (); | |
7e314c57 | 17275 | |
2b4424c3 TT |
17276 | maybe_set_alignment (cu, die, set_type); |
17277 | ||
f792889a | 17278 | return set_die_type (die, set_type, cu); |
72019c9c | 17279 | } |
7ca2d3a3 | 17280 | |
0971de02 TT |
17281 | /* A helper for read_common_block that creates a locexpr baton. |
17282 | SYM is the symbol which we are marking as computed. | |
17283 | COMMON_DIE is the DIE for the common block. | |
17284 | COMMON_LOC is the location expression attribute for the common | |
17285 | block itself. | |
17286 | MEMBER_LOC is the location expression attribute for the particular | |
17287 | member of the common block that we are processing. | |
17288 | CU is the CU from which the above come. */ | |
17289 | ||
17290 | static void | |
17291 | mark_common_block_symbol_computed (struct symbol *sym, | |
17292 | struct die_info *common_die, | |
17293 | struct attribute *common_loc, | |
17294 | struct attribute *member_loc, | |
17295 | struct dwarf2_cu *cu) | |
17296 | { | |
5e22e966 | 17297 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 17298 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
17299 | struct dwarf2_locexpr_baton *baton; |
17300 | gdb_byte *ptr; | |
17301 | unsigned int cu_off; | |
08feed99 | 17302 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
17303 | LONGEST offset = 0; |
17304 | ||
17305 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
17306 | gdb_assert (common_loc->form_is_block ()); |
17307 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 17308 | || member_loc->form_is_constant ()); |
0971de02 | 17309 | |
8d749320 | 17310 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 17311 | baton->per_objfile = per_objfile; |
0971de02 TT |
17312 | baton->per_cu = cu->per_cu; |
17313 | gdb_assert (baton->per_cu); | |
17314 | ||
17315 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
17316 | ||
cd6c91b4 | 17317 | if (member_loc->form_is_constant ()) |
0971de02 | 17318 | { |
0826b30a | 17319 | offset = member_loc->constant_value (0); |
0971de02 TT |
17320 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
17321 | } | |
17322 | else | |
9d2246fc | 17323 | baton->size += member_loc->as_block ()->size; |
0971de02 | 17324 | |
224c3ddb | 17325 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
17326 | baton->data = ptr; |
17327 | ||
17328 | *ptr++ = DW_OP_call4; | |
9c541725 | 17329 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
17330 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
17331 | ptr += 4; | |
17332 | ||
cd6c91b4 | 17333 | if (member_loc->form_is_constant ()) |
0971de02 TT |
17334 | { |
17335 | *ptr++ = DW_OP_addr; | |
17336 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
17337 | ptr += cu->header.addr_size; | |
17338 | } | |
17339 | else | |
17340 | { | |
17341 | /* We have to copy the data here, because DW_OP_call4 will only | |
17342 | use a DW_AT_location attribute. */ | |
9d2246fc TT |
17343 | struct dwarf_block *block = member_loc->as_block (); |
17344 | memcpy (ptr, block->data, block->size); | |
17345 | ptr += block->size; | |
0971de02 TT |
17346 | } |
17347 | ||
17348 | *ptr++ = DW_OP_plus; | |
17349 | gdb_assert (ptr - baton->data == baton->size); | |
17350 | ||
0971de02 | 17351 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17352 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
17353 | } |
17354 | ||
4357ac6c TT |
17355 | /* Create appropriate locally-scoped variables for all the |
17356 | DW_TAG_common_block entries. Also create a struct common_block | |
17357 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 17358 | is used to separate the common blocks name namespace from regular |
4357ac6c | 17359 | variable names. */ |
c906108c SS |
17360 | |
17361 | static void | |
e7c27a73 | 17362 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17363 | { |
0971de02 TT |
17364 | struct attribute *attr; |
17365 | ||
17366 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 17367 | if (attr != nullptr) |
0971de02 TT |
17368 | { |
17369 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 17370 | if (attr->form_is_block ()) |
dda83cd7 | 17371 | { |
0971de02 | 17372 | /* Ok. */ |
dda83cd7 | 17373 | } |
cd6c91b4 | 17374 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 17375 | { |
0971de02 TT |
17376 | dwarf2_complex_location_expr_complaint (); |
17377 | attr = NULL; | |
dda83cd7 | 17378 | } |
0971de02 | 17379 | else |
dda83cd7 | 17380 | { |
0971de02 TT |
17381 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17382 | "common block member"); | |
17383 | attr = NULL; | |
dda83cd7 | 17384 | } |
0971de02 TT |
17385 | } |
17386 | ||
639d11d3 | 17387 | if (die->child != NULL) |
c906108c | 17388 | { |
5e22e966 | 17389 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
17390 | struct die_info *child_die; |
17391 | size_t n_entries = 0, size; | |
17392 | struct common_block *common_block; | |
17393 | struct symbol *sym; | |
74ac6d43 | 17394 | |
4357ac6c TT |
17395 | for (child_die = die->child; |
17396 | child_die && child_die->tag; | |
436c571c | 17397 | child_die = child_die->sibling) |
4357ac6c TT |
17398 | ++n_entries; |
17399 | ||
17400 | size = (sizeof (struct common_block) | |
17401 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17402 | common_block |
17403 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17404 | size); | |
4357ac6c TT |
17405 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17406 | common_block->n_entries = 0; | |
17407 | ||
17408 | for (child_die = die->child; | |
17409 | child_die && child_die->tag; | |
436c571c | 17410 | child_die = child_die->sibling) |
4357ac6c TT |
17411 | { |
17412 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17413 | symbol scope. */ | |
e7c27a73 | 17414 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17415 | if (sym != NULL) |
17416 | { | |
17417 | struct attribute *member_loc; | |
17418 | ||
17419 | common_block->contents[common_block->n_entries++] = sym; | |
17420 | ||
17421 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17422 | cu); | |
17423 | if (member_loc) | |
17424 | { | |
17425 | /* GDB has handled this for a long time, but it is | |
17426 | not specified by DWARF. It seems to have been | |
17427 | emitted by gfortran at least as recently as: | |
17428 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 17429 | complaint (_("Variable in common block has " |
0971de02 | 17430 | "DW_AT_data_member_location " |
9d8780f0 SM |
17431 | "- DIE at %s [in module %s]"), |
17432 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17433 | objfile_name (objfile)); |
0971de02 | 17434 | |
cd6c91b4 | 17435 | if (member_loc->form_is_section_offset ()) |
0971de02 | 17436 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 17437 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 17438 | || member_loc->form_is_block ()) |
0971de02 | 17439 | { |
435d3d88 | 17440 | if (attr != nullptr) |
0971de02 TT |
17441 | mark_common_block_symbol_computed (sym, die, attr, |
17442 | member_loc, cu); | |
17443 | } | |
17444 | else | |
17445 | dwarf2_complex_location_expr_complaint (); | |
17446 | } | |
17447 | } | |
c906108c | 17448 | } |
4357ac6c TT |
17449 | |
17450 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17451 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17452 | } |
17453 | } | |
17454 | ||
0114d602 | 17455 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17456 | |
0114d602 DJ |
17457 | static struct type * |
17458 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17459 | { |
5e22e966 | 17460 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17461 | const char *previous_prefix, *name; |
9219021c | 17462 | int is_anonymous; |
0114d602 DJ |
17463 | struct type *type; |
17464 | ||
17465 | /* For extensions, reuse the type of the original namespace. */ | |
17466 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17467 | { | |
17468 | struct die_info *ext_die; | |
17469 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17470 | |
0114d602 DJ |
17471 | ext_die = dwarf2_extension (die, &ext_cu); |
17472 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17473 | |
17474 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17475 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17476 | return set_die_type (die, type, cu); |
17477 | } | |
9219021c | 17478 | |
e142c38c | 17479 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17480 | |
17481 | /* Now build the name of the current namespace. */ | |
17482 | ||
0114d602 DJ |
17483 | previous_prefix = determine_prefix (die, cu); |
17484 | if (previous_prefix[0] != '\0') | |
17485 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17486 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17487 | |
17488 | /* Create the type. */ | |
19f392bc | 17489 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 17490 | |
60531b24 | 17491 | return set_die_type (die, type, cu); |
0114d602 DJ |
17492 | } |
17493 | ||
22cee43f | 17494 | /* Read a namespace scope. */ |
0114d602 DJ |
17495 | |
17496 | static void | |
17497 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17498 | { | |
5e22e966 | 17499 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17500 | int is_anonymous; |
9219021c | 17501 | |
5c4e30ca DC |
17502 | /* Add a symbol associated to this if we haven't seen the namespace |
17503 | before. Also, add a using directive if it's an anonymous | |
17504 | namespace. */ | |
9219021c | 17505 | |
f2f0e013 | 17506 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17507 | { |
17508 | struct type *type; | |
17509 | ||
0114d602 | 17510 | type = read_type_die (die, cu); |
e7c27a73 | 17511 | new_symbol (die, type, cu); |
5c4e30ca | 17512 | |
e8e80198 | 17513 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17514 | if (is_anonymous) |
0114d602 DJ |
17515 | { |
17516 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17517 | |
eb1e02fd | 17518 | std::vector<const char *> excludes; |
804d2729 | 17519 | add_using_directive (using_directives (cu), |
7d93a1e0 | 17520 | previous_prefix, type->name (), NULL, |
eb1e02fd | 17521 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17522 | } |
5c4e30ca | 17523 | } |
9219021c | 17524 | |
639d11d3 | 17525 | if (die->child != NULL) |
d9fa45fe | 17526 | { |
639d11d3 | 17527 | struct die_info *child_die = die->child; |
6e70227d | 17528 | |
d9fa45fe DC |
17529 | while (child_die && child_die->tag) |
17530 | { | |
e7c27a73 | 17531 | process_die (child_die, cu); |
436c571c | 17532 | child_die = child_die->sibling; |
d9fa45fe DC |
17533 | } |
17534 | } | |
38d518c9 EZ |
17535 | } |
17536 | ||
f55ee35c JK |
17537 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17538 | imported module. Still we need that type as local Fortran "use ... only" | |
17539 | declaration imports depend on the created type in determine_prefix. */ | |
17540 | ||
17541 | static struct type * | |
17542 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17543 | { | |
5e22e966 | 17544 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 17545 | const char *module_name; |
f55ee35c JK |
17546 | struct type *type; |
17547 | ||
17548 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17549 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17550 | |
f55ee35c JK |
17551 | return set_die_type (die, type, cu); |
17552 | } | |
17553 | ||
5d7cb8df JK |
17554 | /* Read a Fortran module. */ |
17555 | ||
17556 | static void | |
17557 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17558 | { | |
17559 | struct die_info *child_die = die->child; | |
530e8392 KB |
17560 | struct type *type; |
17561 | ||
17562 | type = read_type_die (die, cu); | |
17563 | new_symbol (die, type, cu); | |
5d7cb8df | 17564 | |
5d7cb8df JK |
17565 | while (child_die && child_die->tag) |
17566 | { | |
17567 | process_die (child_die, cu); | |
436c571c | 17568 | child_die = child_die->sibling; |
5d7cb8df JK |
17569 | } |
17570 | } | |
17571 | ||
38d518c9 EZ |
17572 | /* Return the name of the namespace represented by DIE. Set |
17573 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17574 | namespace. */ | |
17575 | ||
17576 | static const char * | |
e142c38c | 17577 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17578 | { |
17579 | struct die_info *current_die; | |
17580 | const char *name = NULL; | |
17581 | ||
17582 | /* Loop through the extensions until we find a name. */ | |
17583 | ||
17584 | for (current_die = die; | |
17585 | current_die != NULL; | |
f2f0e013 | 17586 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17587 | { |
96553a0c DE |
17588 | /* We don't use dwarf2_name here so that we can detect the absence |
17589 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17590 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17591 | |
38d518c9 EZ |
17592 | if (name != NULL) |
17593 | break; | |
17594 | } | |
17595 | ||
17596 | /* Is it an anonymous namespace? */ | |
17597 | ||
17598 | *is_anonymous = (name == NULL); | |
17599 | if (*is_anonymous) | |
2b1dbab0 | 17600 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17601 | |
17602 | return name; | |
d9fa45fe DC |
17603 | } |
17604 | ||
c906108c SS |
17605 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17606 | the user defined type vector. */ | |
17607 | ||
f792889a | 17608 | static struct type * |
e7c27a73 | 17609 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17610 | { |
5e22e966 | 17611 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 17612 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17613 | struct type *type; |
8b2dbe47 KB |
17614 | struct attribute *attr_byte_size; |
17615 | struct attribute *attr_address_class; | |
17616 | int byte_size, addr_class; | |
7e314c57 JK |
17617 | struct type *target_type; |
17618 | ||
17619 | target_type = die_type (die, cu); | |
c906108c | 17620 | |
7e314c57 JK |
17621 | /* The die_type call above may have already set the type for this DIE. */ |
17622 | type = get_die_type (die, cu); | |
17623 | if (type) | |
17624 | return type; | |
17625 | ||
17626 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17627 | |
e142c38c | 17628 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 | 17629 | if (attr_byte_size) |
529908cb | 17630 | byte_size = attr_byte_size->constant_value (cu_header->addr_size); |
c906108c | 17631 | else |
8b2dbe47 KB |
17632 | byte_size = cu_header->addr_size; |
17633 | ||
e142c38c | 17634 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 | 17635 | if (attr_address_class) |
529908cb | 17636 | addr_class = attr_address_class->constant_value (DW_ADDR_none); |
8b2dbe47 KB |
17637 | else |
17638 | addr_class = DW_ADDR_none; | |
17639 | ||
2b4424c3 TT |
17640 | ULONGEST alignment = get_alignment (cu, die); |
17641 | ||
17642 | /* If the pointer size, alignment, or address class is different | |
17643 | than the default, create a type variant marked as such and set | |
17644 | the length accordingly. */ | |
17645 | if (TYPE_LENGTH (type) != byte_size | |
17646 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17647 | && alignment != TYPE_RAW_ALIGN (type)) | |
17648 | || addr_class != DW_ADDR_none) | |
c906108c | 17649 | { |
5e2b427d | 17650 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 | 17651 | { |
314ad88d PA |
17652 | type_instance_flags type_flags |
17653 | = gdbarch_address_class_type_flags (gdbarch, byte_size, | |
17654 | addr_class); | |
876cecd0 TT |
17655 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17656 | == 0); | |
8b2dbe47 KB |
17657 | type = make_type_with_address_space (type, type_flags); |
17658 | } | |
17659 | else if (TYPE_LENGTH (type) != byte_size) | |
17660 | { | |
b98664d3 | 17661 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17662 | } |
2b4424c3 TT |
17663 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17664 | { | |
b98664d3 | 17665 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17666 | " - DIE at %s [in module %s]"), |
17667 | sect_offset_str (die->sect_off), | |
5e22e966 | 17668 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 17669 | } |
6e70227d | 17670 | else |
9a619af0 MS |
17671 | { |
17672 | /* Should we also complain about unhandled address classes? */ | |
17673 | } | |
c906108c | 17674 | } |
8b2dbe47 KB |
17675 | |
17676 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17677 | set_type_align (type, alignment); |
f792889a | 17678 | return set_die_type (die, type, cu); |
c906108c SS |
17679 | } |
17680 | ||
17681 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17682 | the user defined type vector. */ | |
17683 | ||
f792889a | 17684 | static struct type * |
e7c27a73 | 17685 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17686 | { |
17687 | struct type *type; | |
17688 | struct type *to_type; | |
17689 | struct type *domain; | |
17690 | ||
e7c27a73 DJ |
17691 | to_type = die_type (die, cu); |
17692 | domain = die_containing_type (die, cu); | |
0d5de010 | 17693 | |
7e314c57 JK |
17694 | /* The calls above may have already set the type for this DIE. */ |
17695 | type = get_die_type (die, cu); | |
17696 | if (type) | |
17697 | return type; | |
17698 | ||
78134374 | 17699 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 17700 | type = lookup_methodptr_type (to_type); |
78134374 | 17701 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 17702 | { |
5e22e966 | 17703 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
17704 | |
17705 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 17706 | to_type->fields (), to_type->num_fields (), |
a409645d | 17707 | to_type->has_varargs ()); |
7078baeb TT |
17708 | type = lookup_methodptr_type (new_type); |
17709 | } | |
0d5de010 DJ |
17710 | else |
17711 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17712 | |
f792889a | 17713 | return set_die_type (die, type, cu); |
c906108c SS |
17714 | } |
17715 | ||
4297a3f0 | 17716 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17717 | the user defined type vector. */ |
17718 | ||
f792889a | 17719 | static struct type * |
4297a3f0 | 17720 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
dda83cd7 | 17721 | enum type_code refcode) |
c906108c | 17722 | { |
e7c27a73 | 17723 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17724 | struct type *type, *target_type; |
c906108c SS |
17725 | struct attribute *attr; |
17726 | ||
4297a3f0 AV |
17727 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17728 | ||
7e314c57 JK |
17729 | target_type = die_type (die, cu); |
17730 | ||
17731 | /* The die_type call above may have already set the type for this DIE. */ | |
17732 | type = get_die_type (die, cu); | |
17733 | if (type) | |
17734 | return type; | |
17735 | ||
4297a3f0 | 17736 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17737 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17738 | if (attr != nullptr) |
c906108c | 17739 | { |
529908cb | 17740 | TYPE_LENGTH (type) = attr->constant_value (cu_header->addr_size); |
c906108c SS |
17741 | } |
17742 | else | |
17743 | { | |
107d2387 | 17744 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17745 | } |
2b4424c3 | 17746 | maybe_set_alignment (cu, die, type); |
f792889a | 17747 | return set_die_type (die, type, cu); |
c906108c SS |
17748 | } |
17749 | ||
cf363f18 MW |
17750 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17751 | outputs DWARF type qualifiers that apply to an array, not the | |
17752 | element type. But GDB relies on the array element type to carry | |
17753 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17754 | specification. */ | |
17755 | ||
17756 | static struct type * | |
17757 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17758 | struct type *base_type, int cnst, int voltl) | |
17759 | { | |
17760 | struct type *el_type, *inner_array; | |
17761 | ||
17762 | base_type = copy_type (base_type); | |
17763 | inner_array = base_type; | |
17764 | ||
78134374 | 17765 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17766 | { |
17767 | TYPE_TARGET_TYPE (inner_array) = | |
17768 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17769 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17770 | } | |
17771 | ||
17772 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17773 | cnst |= TYPE_CONST (el_type); | |
17774 | voltl |= TYPE_VOLATILE (el_type); | |
17775 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17776 | ||
17777 | return set_die_type (die, base_type, cu); | |
17778 | } | |
17779 | ||
f792889a | 17780 | static struct type * |
e7c27a73 | 17781 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17782 | { |
f792889a | 17783 | struct type *base_type, *cv_type; |
c906108c | 17784 | |
e7c27a73 | 17785 | base_type = die_type (die, cu); |
7e314c57 JK |
17786 | |
17787 | /* The die_type call above may have already set the type for this DIE. */ | |
17788 | cv_type = get_die_type (die, cu); | |
17789 | if (cv_type) | |
17790 | return cv_type; | |
17791 | ||
2f608a3a KW |
17792 | /* In case the const qualifier is applied to an array type, the element type |
17793 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 17794 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 17795 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17796 | |
f792889a DJ |
17797 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17798 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17799 | } |
17800 | ||
f792889a | 17801 | static struct type * |
e7c27a73 | 17802 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17803 | { |
f792889a | 17804 | struct type *base_type, *cv_type; |
c906108c | 17805 | |
e7c27a73 | 17806 | base_type = die_type (die, cu); |
7e314c57 JK |
17807 | |
17808 | /* The die_type call above may have already set the type for this DIE. */ | |
17809 | cv_type = get_die_type (die, cu); | |
17810 | if (cv_type) | |
17811 | return cv_type; | |
17812 | ||
cf363f18 MW |
17813 | /* In case the volatile qualifier is applied to an array type, the |
17814 | element type is so qualified, not the array type (section 6.7.3 | |
17815 | of C99). */ | |
78134374 | 17816 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17817 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17818 | ||
f792889a DJ |
17819 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17820 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17821 | } |
17822 | ||
06d66ee9 TT |
17823 | /* Handle DW_TAG_restrict_type. */ |
17824 | ||
17825 | static struct type * | |
17826 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17827 | { | |
17828 | struct type *base_type, *cv_type; | |
17829 | ||
17830 | base_type = die_type (die, cu); | |
17831 | ||
17832 | /* The die_type call above may have already set the type for this DIE. */ | |
17833 | cv_type = get_die_type (die, cu); | |
17834 | if (cv_type) | |
17835 | return cv_type; | |
17836 | ||
17837 | cv_type = make_restrict_type (base_type); | |
17838 | return set_die_type (die, cv_type, cu); | |
17839 | } | |
17840 | ||
a2c2acaf MW |
17841 | /* Handle DW_TAG_atomic_type. */ |
17842 | ||
17843 | static struct type * | |
17844 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17845 | { | |
17846 | struct type *base_type, *cv_type; | |
17847 | ||
17848 | base_type = die_type (die, cu); | |
17849 | ||
17850 | /* The die_type call above may have already set the type for this DIE. */ | |
17851 | cv_type = get_die_type (die, cu); | |
17852 | if (cv_type) | |
17853 | return cv_type; | |
17854 | ||
17855 | cv_type = make_atomic_type (base_type); | |
17856 | return set_die_type (die, cv_type, cu); | |
17857 | } | |
17858 | ||
c906108c SS |
17859 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17860 | the user defined type vector. It isn't really a user defined type, | |
17861 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17862 | attribute to reference it. */ | |
17863 | ||
f792889a | 17864 | static struct type * |
e7c27a73 | 17865 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17866 | { |
5e22e966 | 17867 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17868 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17869 | struct type *type, *range_type, *index_type, *char_type; |
17870 | struct attribute *attr; | |
216a7e6b AB |
17871 | struct dynamic_prop prop; |
17872 | bool length_is_constant = true; | |
17873 | LONGEST length; | |
17874 | ||
17875 | /* There are a couple of places where bit sizes might be made use of | |
17876 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17877 | of make use of these. Handling bit sizes that are a multiple of the | |
17878 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17879 | with that problem when we have to. Warn about these attributes being | |
17880 | unsupported, then parse the type and ignore them like we always | |
17881 | have. */ | |
17882 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17883 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17884 | { | |
17885 | static bool warning_printed = false; | |
17886 | if (!warning_printed) | |
17887 | { | |
17888 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17889 | "currently supported on DW_TAG_string_type.")); | |
17890 | warning_printed = true; | |
17891 | } | |
17892 | } | |
c906108c | 17893 | |
e142c38c | 17894 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17895 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17896 | { |
17897 | /* The string length describes the location at which the length of | |
17898 | the string can be found. The size of the length field can be | |
17899 | specified with one of the attributes below. */ | |
17900 | struct type *prop_type; | |
17901 | struct attribute *len | |
17902 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17903 | if (len == nullptr) | |
17904 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17905 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17906 | { |
17907 | /* Pass 0 as the default as we know this attribute is constant | |
17908 | and the default value will not be returned. */ | |
0826b30a | 17909 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17910 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17911 | } |
17912 | else | |
17913 | { | |
17914 | /* If the size is not specified then we assume it is the size of | |
17915 | an address on this target. */ | |
293e7e51 | 17916 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17917 | } |
17918 | ||
17919 | /* Convert the attribute into a dynamic property. */ | |
17920 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17921 | length = 1; | |
17922 | else | |
17923 | length_is_constant = false; | |
17924 | } | |
17925 | else if (attr != nullptr) | |
17926 | { | |
17927 | /* This DW_AT_string_length just contains the length with no | |
17928 | indirection. There's no need to create a dynamic property in this | |
17929 | case. Pass 0 for the default value as we know it will not be | |
17930 | returned in this case. */ | |
0826b30a | 17931 | length = attr->constant_value (0); |
216a7e6b AB |
17932 | } |
17933 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17934 | { |
216a7e6b | 17935 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17936 | length = attr->constant_value (1); |
c906108c SS |
17937 | } |
17938 | else | |
17939 | { | |
216a7e6b AB |
17940 | /* Use 1 as a fallback length if we have nothing else. */ |
17941 | length = 1; | |
c906108c | 17942 | } |
6ccb9162 | 17943 | |
46bf5051 | 17944 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17945 | if (length_is_constant) |
17946 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17947 | else | |
17948 | { | |
17949 | struct dynamic_prop low_bound; | |
17950 | ||
8c2e4e06 | 17951 | low_bound.set_const_val (1); |
216a7e6b AB |
17952 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); |
17953 | } | |
3b7538c0 UW |
17954 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17955 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17956 | |
f792889a | 17957 | return set_die_type (die, type, cu); |
c906108c SS |
17958 | } |
17959 | ||
4d804846 JB |
17960 | /* Assuming that DIE corresponds to a function, returns nonzero |
17961 | if the function is prototyped. */ | |
17962 | ||
17963 | static int | |
17964 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17965 | { | |
17966 | struct attribute *attr; | |
17967 | ||
17968 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
c45bc3f8 | 17969 | if (attr && attr->as_boolean ()) |
4d804846 JB |
17970 | return 1; |
17971 | ||
17972 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17973 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17974 | languages that allow unprototyped functions (Eg: Objective C). |
17975 | For all other languages, assume that functions are always | |
17976 | prototyped. */ | |
17977 | if (cu->language != language_c | |
17978 | && cu->language != language_objc | |
17979 | && cu->language != language_opencl) | |
17980 | return 1; | |
17981 | ||
17982 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17983 | prototyped and unprototyped functions; default to prototyped, | |
17984 | since that is more common in modern code (and RealView warns | |
17985 | about unprototyped functions). */ | |
17986 | if (producer_is_realview (cu->producer)) | |
17987 | return 1; | |
17988 | ||
17989 | return 0; | |
17990 | } | |
17991 | ||
c906108c SS |
17992 | /* Handle DIES due to C code like: |
17993 | ||
17994 | struct foo | |
c5aa993b JM |
17995 | { |
17996 | int (*funcp)(int a, long l); | |
17997 | int b; | |
17998 | }; | |
c906108c | 17999 | |
0963b4bd | 18000 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 18001 | |
f792889a | 18002 | static struct type * |
e7c27a73 | 18003 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18004 | { |
5e22e966 | 18005 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
18006 | struct type *type; /* Type that this function returns. */ |
18007 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
18008 | struct attribute *attr; |
18009 | ||
e7c27a73 | 18010 | type = die_type (die, cu); |
7e314c57 JK |
18011 | |
18012 | /* The die_type call above may have already set the type for this DIE. */ | |
18013 | ftype = get_die_type (die, cu); | |
18014 | if (ftype) | |
18015 | return ftype; | |
18016 | ||
0c8b41f1 | 18017 | ftype = lookup_function_type (type); |
c906108c | 18018 | |
4d804846 | 18019 | if (prototyped_function_p (die, cu)) |
27e69b7a | 18020 | ftype->set_is_prototyped (true); |
c906108c | 18021 | |
c055b101 CV |
18022 | /* Store the calling convention in the type if it's available in |
18023 | the subroutine die. Otherwise set the calling convention to | |
18024 | the default value DW_CC_normal. */ | |
18025 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf | 18026 | if (attr != nullptr |
529908cb | 18027 | && is_valid_DW_AT_calling_convention_for_subroutine (attr->constant_value (0))) |
d0922fcf | 18028 | TYPE_CALLING_CONVENTION (ftype) |
529908cb | 18029 | = (enum dwarf_calling_convention) attr->constant_value (0); |
54fcddd0 UW |
18030 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
18031 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
18032 | else | |
18033 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 18034 | |
743649fd MW |
18035 | /* Record whether the function returns normally to its caller or not |
18036 | if the DWARF producer set that information. */ | |
18037 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
c45bc3f8 | 18038 | if (attr && attr->as_boolean ()) |
743649fd MW |
18039 | TYPE_NO_RETURN (ftype) = 1; |
18040 | ||
76c10ea2 GM |
18041 | /* We need to add the subroutine type to the die immediately so |
18042 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 18043 | declared as the same subroutine type. */ |
76c10ea2 | 18044 | set_die_type (die, ftype, cu); |
6e70227d | 18045 | |
639d11d3 | 18046 | if (die->child != NULL) |
c906108c | 18047 | { |
bb5ed363 | 18048 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 18049 | struct die_info *child_die; |
8072405b | 18050 | int nparams, iparams; |
c906108c SS |
18051 | |
18052 | /* Count the number of parameters. | |
dda83cd7 SM |
18053 | FIXME: GDB currently ignores vararg functions, but knows about |
18054 | vararg member functions. */ | |
8072405b | 18055 | nparams = 0; |
639d11d3 | 18056 | child_die = die->child; |
c906108c SS |
18057 | while (child_die && child_die->tag) |
18058 | { | |
18059 | if (child_die->tag == DW_TAG_formal_parameter) | |
18060 | nparams++; | |
18061 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
1d6286ed SM |
18062 | ftype->set_has_varargs (true); |
18063 | ||
436c571c | 18064 | child_die = child_die->sibling; |
c906108c SS |
18065 | } |
18066 | ||
18067 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 18068 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
18069 | ftype->set_fields |
18070 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 18071 | |
8072405b JK |
18072 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
18073 | even if we error out during the parameters reading below. */ | |
18074 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 18075 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
18076 | |
18077 | iparams = 0; | |
639d11d3 | 18078 | child_die = die->child; |
c906108c SS |
18079 | while (child_die && child_die->tag) |
18080 | { | |
18081 | if (child_die->tag == DW_TAG_formal_parameter) | |
18082 | { | |
3ce3b1ba PA |
18083 | struct type *arg_type; |
18084 | ||
18085 | /* DWARF version 2 has no clean way to discern C++ | |
18086 | static and non-static member functions. G++ helps | |
18087 | GDB by marking the first parameter for non-static | |
18088 | member functions (which is the this pointer) as | |
18089 | artificial. We pass this information to | |
18090 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
18091 | ||
18092 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
18093 | 4.5 does not yet generate. */ | |
e142c38c | 18094 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 18095 | if (attr != nullptr) |
c45bc3f8 | 18096 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = attr->as_boolean (); |
c906108c | 18097 | else |
9c37b5ae | 18098 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
18099 | arg_type = die_type (child_die, cu); |
18100 | ||
18101 | /* RealView does not mark THIS as const, which the testsuite | |
18102 | expects. GCC marks THIS as const in method definitions, | |
18103 | but not in the class specifications (GCC PR 43053). */ | |
18104 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
18105 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
18106 | { | |
18107 | int is_this = 0; | |
18108 | struct dwarf2_cu *arg_cu = cu; | |
18109 | const char *name = dwarf2_name (child_die, cu); | |
18110 | ||
18111 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 18112 | if (attr != nullptr) |
3ce3b1ba PA |
18113 | { |
18114 | /* If the compiler emits this, use it. */ | |
18115 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
18116 | is_this = 1; | |
18117 | } | |
18118 | else if (name && strcmp (name, "this") == 0) | |
18119 | /* Function definitions will have the argument names. */ | |
18120 | is_this = 1; | |
18121 | else if (name == NULL && iparams == 0) | |
18122 | /* Declarations may not have the names, so like | |
18123 | elsewhere in GDB, assume an artificial first | |
18124 | argument is "this". */ | |
18125 | is_this = 1; | |
18126 | ||
18127 | if (is_this) | |
18128 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
18129 | arg_type, 0); | |
18130 | } | |
18131 | ||
5d14b6e5 | 18132 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
18133 | iparams++; |
18134 | } | |
436c571c | 18135 | child_die = child_die->sibling; |
c906108c SS |
18136 | } |
18137 | } | |
18138 | ||
76c10ea2 | 18139 | return ftype; |
c906108c SS |
18140 | } |
18141 | ||
f792889a | 18142 | static struct type * |
e7c27a73 | 18143 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18144 | { |
5e22e966 | 18145 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 18146 | const char *name = NULL; |
3c8e0968 | 18147 | struct type *this_type, *target_type; |
c906108c | 18148 | |
94af9270 | 18149 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc | 18150 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
8f53807e | 18151 | this_type->set_target_is_stub (true); |
f792889a | 18152 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
18153 | target_type = die_type (die, cu); |
18154 | if (target_type != this_type) | |
18155 | TYPE_TARGET_TYPE (this_type) = target_type; | |
18156 | else | |
18157 | { | |
18158 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
18159 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 18160 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
18161 | "- DIE at %s [in module %s]"), |
18162 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
18163 | TYPE_TARGET_TYPE (this_type) = NULL; |
18164 | } | |
e4003a34 TV |
18165 | if (name == NULL) |
18166 | { | |
18167 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
18168 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
18169 | Handle these by just returning the target type, rather than | |
18170 | constructing an anonymous typedef type and trying to handle this | |
18171 | elsewhere. */ | |
18172 | set_die_type (die, target_type, cu); | |
18173 | return target_type; | |
18174 | } | |
f792889a | 18175 | return this_type; |
c906108c SS |
18176 | } |
18177 | ||
a625a8c9 TT |
18178 | /* Helper for get_dwarf2_rational_constant that computes the value of |
18179 | a given gmp_mpz given an attribute. */ | |
18180 | ||
18181 | static void | |
18182 | get_mpz (struct dwarf2_cu *cu, gdb_mpz *value, struct attribute *attr) | |
18183 | { | |
18184 | /* GCC will sometimes emit a 16-byte constant value as a DWARF | |
18185 | location expression that pushes an implicit value. */ | |
18186 | if (attr->form == DW_FORM_exprloc) | |
18187 | { | |
18188 | dwarf_block *blk = attr->as_block (); | |
18189 | if (blk->size > 0 && blk->data[0] == DW_OP_implicit_value) | |
18190 | { | |
18191 | uint64_t len; | |
18192 | const gdb_byte *ptr = safe_read_uleb128 (blk->data + 1, | |
18193 | blk->data + blk->size, | |
18194 | &len); | |
18195 | if (ptr - blk->data + len <= blk->size) | |
18196 | { | |
18197 | mpz_import (value->val, len, | |
18198 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
18199 | 1, 0, 0, ptr); | |
18200 | return; | |
18201 | } | |
18202 | } | |
18203 | ||
18204 | /* On failure set it to 1. */ | |
18205 | *value = gdb_mpz (1); | |
18206 | } | |
18207 | else if (attr->form_is_block ()) | |
18208 | { | |
18209 | dwarf_block *blk = attr->as_block (); | |
18210 | mpz_import (value->val, blk->size, | |
18211 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
18212 | 1, 0, 0, blk->data); | |
18213 | } | |
18214 | else | |
18215 | *value = gdb_mpz (attr->constant_value (1)); | |
18216 | } | |
18217 | ||
09584414 JB |
18218 | /* Assuming DIE is a rational DW_TAG_constant, read the DIE's |
18219 | numerator and denominator into NUMERATOR and DENOMINATOR (resp). | |
18220 | ||
18221 | If the numerator and/or numerator attribute is missing, | |
18222 | a complaint is filed, and NUMERATOR and DENOMINATOR are left | |
18223 | untouched. */ | |
18224 | ||
18225 | static void | |
18226 | get_dwarf2_rational_constant (struct die_info *die, struct dwarf2_cu *cu, | |
5cde1d82 | 18227 | gdb_mpz *numerator, gdb_mpz *denominator) |
09584414 JB |
18228 | { |
18229 | struct attribute *num_attr, *denom_attr; | |
18230 | ||
18231 | num_attr = dwarf2_attr (die, DW_AT_GNU_numerator, cu); | |
18232 | if (num_attr == nullptr) | |
18233 | complaint (_("DW_AT_GNU_numerator missing in %s DIE at %s"), | |
18234 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18235 | ||
18236 | denom_attr = dwarf2_attr (die, DW_AT_GNU_denominator, cu); | |
18237 | if (denom_attr == nullptr) | |
18238 | complaint (_("DW_AT_GNU_denominator missing in %s DIE at %s"), | |
18239 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18240 | ||
18241 | if (num_attr == nullptr || denom_attr == nullptr) | |
18242 | return; | |
18243 | ||
a625a8c9 TT |
18244 | get_mpz (cu, numerator, num_attr); |
18245 | get_mpz (cu, denominator, denom_attr); | |
09584414 JB |
18246 | } |
18247 | ||
18248 | /* Same as get_dwarf2_rational_constant, but extracting an unsigned | |
18249 | rational constant, rather than a signed one. | |
18250 | ||
18251 | If the rational constant has a negative value, a complaint | |
18252 | is filed, and NUMERATOR and DENOMINATOR are left untouched. */ | |
18253 | ||
18254 | static void | |
18255 | get_dwarf2_unsigned_rational_constant (struct die_info *die, | |
18256 | struct dwarf2_cu *cu, | |
5cde1d82 TT |
18257 | gdb_mpz *numerator, |
18258 | gdb_mpz *denominator) | |
09584414 | 18259 | { |
5cde1d82 TT |
18260 | gdb_mpz num (1); |
18261 | gdb_mpz denom (1); | |
09584414 JB |
18262 | |
18263 | get_dwarf2_rational_constant (die, cu, &num, &denom); | |
5cde1d82 | 18264 | if (mpz_sgn (num.val) == -1 && mpz_sgn (denom.val) == -1) |
09584414 | 18265 | { |
5cde1d82 TT |
18266 | mpz_neg (num.val, num.val); |
18267 | mpz_neg (denom.val, denom.val); | |
09584414 | 18268 | } |
5cde1d82 | 18269 | else if (mpz_sgn (num.val) == -1) |
09584414 JB |
18270 | { |
18271 | complaint (_("unexpected negative value for DW_AT_GNU_numerator" | |
18272 | " in DIE at %s"), | |
18273 | sect_offset_str (die->sect_off)); | |
18274 | return; | |
18275 | } | |
5cde1d82 | 18276 | else if (mpz_sgn (denom.val) == -1) |
09584414 JB |
18277 | { |
18278 | complaint (_("unexpected negative value for DW_AT_GNU_denominator" | |
18279 | " in DIE at %s"), | |
18280 | sect_offset_str (die->sect_off)); | |
18281 | return; | |
18282 | } | |
18283 | ||
5cde1d82 TT |
18284 | *numerator = std::move (num); |
18285 | *denominator = std::move (denom); | |
09584414 JB |
18286 | } |
18287 | ||
bbcdf9ab TT |
18288 | /* Assuming that ENCODING is a string whose contents starting at the |
18289 | K'th character is "_nn" where "nn" is a decimal number, scan that | |
18290 | number and set RESULT to the value. K is updated to point to the | |
18291 | character immediately following the number. | |
18292 | ||
18293 | If the string does not conform to the format described above, false | |
18294 | is returned, and K may or may not be changed. */ | |
18295 | ||
18296 | static bool | |
18297 | ada_get_gnat_encoded_number (const char *encoding, int &k, gdb_mpz *result) | |
18298 | { | |
18299 | /* The next character should be an underscore ('_') followed | |
18300 | by a digit. */ | |
18301 | if (encoding[k] != '_' || !isdigit (encoding[k + 1])) | |
18302 | return false; | |
18303 | ||
18304 | /* Skip the underscore. */ | |
18305 | k++; | |
18306 | int start = k; | |
18307 | ||
18308 | /* Determine the number of digits for our number. */ | |
18309 | while (isdigit (encoding[k])) | |
18310 | k++; | |
18311 | if (k == start) | |
18312 | return false; | |
18313 | ||
18314 | std::string copy (&encoding[start], k - start); | |
18315 | if (mpz_set_str (result->val, copy.c_str (), 10) == -1) | |
18316 | return false; | |
18317 | ||
18318 | return true; | |
18319 | } | |
18320 | ||
18321 | /* Scan two numbers from ENCODING at OFFSET, assuming the string is of | |
18322 | the form _NN_DD, where NN and DD are decimal numbers. Set NUM and | |
18323 | DENOM, update OFFSET, and return true on success. Return false on | |
18324 | failure. */ | |
18325 | ||
18326 | static bool | |
18327 | ada_get_gnat_encoded_ratio (const char *encoding, int &offset, | |
18328 | gdb_mpz *num, gdb_mpz *denom) | |
18329 | { | |
18330 | if (!ada_get_gnat_encoded_number (encoding, offset, num)) | |
18331 | return false; | |
18332 | return ada_get_gnat_encoded_number (encoding, offset, denom); | |
18333 | } | |
18334 | ||
09584414 | 18335 | /* Assuming DIE corresponds to a fixed point type, finish the creation |
bbcdf9ab TT |
18336 | of the corresponding TYPE by setting its type-specific data. CU is |
18337 | the DIE's CU. SUFFIX is the "XF" type name suffix coming from GNAT | |
18338 | encodings. It is nullptr if the GNAT encoding should be | |
18339 | ignored. */ | |
09584414 JB |
18340 | |
18341 | static void | |
bbcdf9ab TT |
18342 | finish_fixed_point_type (struct type *type, const char *suffix, |
18343 | struct die_info *die, struct dwarf2_cu *cu) | |
09584414 | 18344 | { |
09584414 JB |
18345 | gdb_assert (type->code () == TYPE_CODE_FIXED_POINT |
18346 | && TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FIXED_POINT); | |
18347 | ||
bbcdf9ab TT |
18348 | /* If GNAT encodings are preferred, don't examine the |
18349 | attributes. */ | |
18350 | struct attribute *attr = nullptr; | |
18351 | if (suffix == nullptr) | |
18352 | { | |
18353 | attr = dwarf2_attr (die, DW_AT_binary_scale, cu); | |
18354 | if (attr == nullptr) | |
18355 | attr = dwarf2_attr (die, DW_AT_decimal_scale, cu); | |
18356 | if (attr == nullptr) | |
18357 | attr = dwarf2_attr (die, DW_AT_small, cu); | |
18358 | } | |
09584414 | 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 | { | |
bbcdf9ab TT |
18371 | int offset = 0; |
18372 | if (suffix != nullptr | |
18373 | && ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18374 | &scale_denom) | |
18375 | /* The number might be encoded as _nn_dd_nn_dd, where the | |
18376 | second ratio is the 'small value. In this situation, we | |
18377 | want the second value. */ | |
18378 | && (suffix[offset] != '_' | |
18379 | || ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18380 | &scale_denom))) | |
18381 | { | |
18382 | /* Found it. */ | |
18383 | } | |
18384 | else | |
18385 | { | |
18386 | /* Scaling factor not found. Assume a scaling factor of 1, | |
18387 | and hope for the best. At least the user will be able to | |
18388 | see the encoded value. */ | |
18389 | scale_num = 1; | |
18390 | scale_denom = 1; | |
18391 | complaint (_("no scale found for fixed-point type (DIE at %s)"), | |
18392 | sect_offset_str (die->sect_off)); | |
18393 | } | |
09584414 JB |
18394 | } |
18395 | else if (attr->name == DW_AT_binary_scale) | |
18396 | { | |
18397 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18398 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18399 | |
5cde1d82 | 18400 | mpz_mul_2exp (num_or_denom->val, num_or_denom->val, std::abs (scale_exp)); |
09584414 JB |
18401 | } |
18402 | else if (attr->name == DW_AT_decimal_scale) | |
18403 | { | |
18404 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18405 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18406 | |
5cde1d82 | 18407 | mpz_ui_pow_ui (num_or_denom->val, 10, std::abs (scale_exp)); |
09584414 JB |
18408 | } |
18409 | else if (attr->name == DW_AT_small) | |
18410 | { | |
18411 | struct die_info *scale_die; | |
18412 | struct dwarf2_cu *scale_cu = cu; | |
18413 | ||
18414 | scale_die = follow_die_ref (die, attr, &scale_cu); | |
18415 | if (scale_die->tag == DW_TAG_constant) | |
18416 | get_dwarf2_unsigned_rational_constant (scale_die, scale_cu, | |
18417 | &scale_num, &scale_denom); | |
18418 | else | |
18419 | complaint (_("%s DIE not supported as target of DW_AT_small attribute" | |
18420 | " (DIE at %s)"), | |
18421 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18422 | } | |
18423 | else | |
18424 | { | |
18425 | complaint (_("unsupported scale attribute %s for fixed-point type" | |
18426 | " (DIE at %s)"), | |
18427 | dwarf_attr_name (attr->name), | |
18428 | sect_offset_str (die->sect_off)); | |
18429 | } | |
18430 | ||
2a12c336 | 18431 | gdb_mpq &scaling_factor = type->fixed_point_info ().scaling_factor; |
5cde1d82 TT |
18432 | mpz_set (mpq_numref (scaling_factor.val), scale_num.val); |
18433 | mpz_set (mpq_denref (scaling_factor.val), scale_denom.val); | |
09584414 JB |
18434 | mpq_canonicalize (scaling_factor.val); |
18435 | } | |
18436 | ||
bbcdf9ab TT |
18437 | /* The gnat-encoding suffix for fixed point. */ |
18438 | ||
18439 | #define GNAT_FIXED_POINT_SUFFIX "___XF_" | |
18440 | ||
18441 | /* If NAME encodes an Ada fixed-point type, return a pointer to the | |
18442 | "XF" suffix of the name. The text after this is what encodes the | |
18443 | 'small and 'delta information. Otherwise, return nullptr. */ | |
18444 | ||
18445 | static const char * | |
18446 | gnat_encoded_fixed_point_type_info (const char *name) | |
18447 | { | |
18448 | return strstr (name, GNAT_FIXED_POINT_SUFFIX); | |
18449 | } | |
18450 | ||
9b790ce7 UW |
18451 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
18452 | (which may be different from NAME) to the architecture back-end to allow | |
18453 | it to guess the correct format if necessary. */ | |
18454 | ||
18455 | static struct type * | |
18456 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 18457 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 18458 | { |
08feed99 | 18459 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
18460 | const struct floatformat **format; |
18461 | struct type *type; | |
18462 | ||
18463 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
18464 | if (format) | |
103a685e | 18465 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 18466 | else |
77b7c781 | 18467 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
18468 | |
18469 | return type; | |
18470 | } | |
18471 | ||
eb77c9df AB |
18472 | /* Allocate an integer type of size BITS and name NAME. */ |
18473 | ||
18474 | static struct type * | |
18475 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
18476 | int bits, int unsigned_p, const char *name) | |
18477 | { | |
18478 | struct type *type; | |
18479 | ||
18480 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
18481 | instead of using DW_TAG_unspecified_type. This has been seen on | |
18482 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
18483 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
18484 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
18485 | type = objfile_type (objfile)->builtin_void; |
18486 | else | |
18487 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
18488 | ||
18489 | return type; | |
18490 | } | |
18491 | ||
09584414 JB |
18492 | /* Return true if DIE has a DW_AT_small attribute whose value is |
18493 | a constant rational, where both the numerator and denominator | |
18494 | are equal to zero. | |
18495 | ||
18496 | CU is the DIE's Compilation Unit. */ | |
18497 | ||
18498 | static bool | |
18499 | has_zero_over_zero_small_attribute (struct die_info *die, | |
18500 | struct dwarf2_cu *cu) | |
18501 | { | |
18502 | struct attribute *attr = dwarf2_attr (die, DW_AT_small, cu); | |
18503 | if (attr == nullptr) | |
18504 | return false; | |
18505 | ||
18506 | struct dwarf2_cu *scale_cu = cu; | |
18507 | struct die_info *scale_die | |
18508 | = follow_die_ref (die, attr, &scale_cu); | |
18509 | ||
18510 | if (scale_die->tag != DW_TAG_constant) | |
18511 | return false; | |
18512 | ||
5cde1d82 | 18513 | gdb_mpz num (1), denom (1); |
09584414 | 18514 | get_dwarf2_rational_constant (scale_die, cu, &num, &denom); |
5cde1d82 | 18515 | return mpz_sgn (num.val) == 0 && mpz_sgn (denom.val) == 0; |
09584414 JB |
18516 | } |
18517 | ||
8bdc1658 AB |
18518 | /* Initialise and return a floating point type of size BITS suitable for |
18519 | use as a component of a complex number. The NAME_HINT is passed through | |
18520 | when initialising the floating point type and is the name of the complex | |
18521 | type. | |
18522 | ||
18523 | As DWARF doesn't currently provide an explicit name for the components | |
18524 | of a complex number, but it can be helpful to have these components | |
18525 | named, we try to select a suitable name based on the size of the | |
18526 | component. */ | |
18527 | static struct type * | |
18528 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
18529 | struct objfile *objfile, | |
103a685e TT |
18530 | int bits, const char *name_hint, |
18531 | enum bfd_endian byte_order) | |
8bdc1658 | 18532 | { |
08feed99 | 18533 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
18534 | struct type *tt = nullptr; |
18535 | ||
35add35e AB |
18536 | /* Try to find a suitable floating point builtin type of size BITS. |
18537 | We're going to use the name of this type as the name for the complex | |
18538 | target type that we are about to create. */ | |
1db455a7 | 18539 | switch (cu->language) |
8bdc1658 | 18540 | { |
1db455a7 AB |
18541 | case language_fortran: |
18542 | switch (bits) | |
18543 | { | |
18544 | case 32: | |
18545 | tt = builtin_f_type (gdbarch)->builtin_real; | |
18546 | break; | |
18547 | case 64: | |
18548 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
18549 | break; | |
18550 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18551 | case 128: | |
18552 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
18553 | break; | |
18554 | } | |
8bdc1658 | 18555 | break; |
1db455a7 AB |
18556 | default: |
18557 | switch (bits) | |
18558 | { | |
18559 | case 32: | |
18560 | tt = builtin_type (gdbarch)->builtin_float; | |
18561 | break; | |
18562 | case 64: | |
18563 | tt = builtin_type (gdbarch)->builtin_double; | |
18564 | break; | |
18565 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18566 | case 128: | |
18567 | tt = builtin_type (gdbarch)->builtin_long_double; | |
18568 | break; | |
18569 | } | |
8bdc1658 AB |
18570 | break; |
18571 | } | |
18572 | ||
35add35e AB |
18573 | /* If the type we found doesn't match the size we were looking for, then |
18574 | pretend we didn't find a type at all, the complex target type we | |
18575 | create will then be nameless. */ | |
a12e5744 | 18576 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
18577 | tt = nullptr; |
18578 | ||
7d93a1e0 | 18579 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 18580 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
18581 | } |
18582 | ||
c906108c SS |
18583 | /* Find a representation of a given base type and install |
18584 | it in the TYPE field of the die. */ | |
18585 | ||
f792889a | 18586 | static struct type * |
e7c27a73 | 18587 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18588 | { |
5e22e966 | 18589 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
18590 | struct type *type; |
18591 | struct attribute *attr; | |
19f392bc | 18592 | int encoding = 0, bits = 0; |
15d034d0 | 18593 | const char *name; |
34877895 | 18594 | gdbarch *arch; |
c906108c | 18595 | |
e142c38c | 18596 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
529908cb TT |
18597 | if (attr != nullptr && attr->form_is_constant ()) |
18598 | encoding = attr->constant_value (0); | |
e142c38c | 18599 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18600 | if (attr != nullptr) |
529908cb | 18601 | bits = attr->constant_value (0) * TARGET_CHAR_BIT; |
39cbfefa | 18602 | name = dwarf2_name (die, cu); |
6ccb9162 | 18603 | if (!name) |
34877895 | 18604 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 18605 | |
08feed99 | 18606 | arch = objfile->arch (); |
103a685e TT |
18607 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
18608 | ||
34877895 | 18609 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
529908cb | 18610 | if (attr != nullptr && attr->form_is_constant ()) |
103a685e | 18611 | { |
529908cb | 18612 | int endianity = attr->constant_value (0); |
103a685e TT |
18613 | |
18614 | switch (endianity) | |
18615 | { | |
18616 | case DW_END_big: | |
18617 | byte_order = BFD_ENDIAN_BIG; | |
18618 | break; | |
18619 | case DW_END_little: | |
18620 | byte_order = BFD_ENDIAN_LITTLE; | |
18621 | break; | |
18622 | default: | |
18623 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
18624 | break; | |
18625 | } | |
18626 | } | |
6ccb9162 | 18627 | |
09584414 JB |
18628 | if ((encoding == DW_ATE_signed_fixed || encoding == DW_ATE_unsigned_fixed) |
18629 | && cu->language == language_ada | |
18630 | && has_zero_over_zero_small_attribute (die, cu)) | |
18631 | { | |
18632 | /* brobecker/2018-02-24: This is a fixed point type for which | |
18633 | the scaling factor is represented as fraction whose value | |
18634 | does not make sense (zero divided by zero), so we should | |
18635 | normally never see these. However, there is a small category | |
18636 | of fixed point types for which GNAT is unable to provide | |
18637 | the scaling factor via the standard DWARF mechanisms, and | |
18638 | for which the info is provided via the GNAT encodings instead. | |
bbcdf9ab | 18639 | This is likely what this DIE is about. */ |
09584414 JB |
18640 | encoding = (encoding == DW_ATE_signed_fixed |
18641 | ? DW_ATE_signed | |
18642 | : DW_ATE_unsigned); | |
18643 | } | |
18644 | ||
bbcdf9ab TT |
18645 | /* With GNAT encodings, fixed-point information will be encoded in |
18646 | the type name. Note that this can also occur with the above | |
18647 | zero-over-zero case, which is why this is a separate "if" rather | |
18648 | than an "else if". */ | |
18649 | const char *gnat_encoding_suffix = nullptr; | |
18650 | if ((encoding == DW_ATE_signed || encoding == DW_ATE_unsigned) | |
18651 | && cu->language == language_ada | |
18652 | && name != nullptr) | |
18653 | { | |
18654 | gnat_encoding_suffix = gnat_encoded_fixed_point_type_info (name); | |
18655 | if (gnat_encoding_suffix != nullptr) | |
18656 | { | |
18657 | gdb_assert (startswith (gnat_encoding_suffix, | |
18658 | GNAT_FIXED_POINT_SUFFIX)); | |
18659 | name = obstack_strndup (&cu->per_objfile->objfile->objfile_obstack, | |
18660 | name, gnat_encoding_suffix - name); | |
18661 | /* Use -1 here so that SUFFIX points at the "_" after the | |
18662 | "XF". */ | |
18663 | gnat_encoding_suffix += strlen (GNAT_FIXED_POINT_SUFFIX) - 1; | |
18664 | ||
18665 | encoding = (encoding == DW_ATE_signed | |
18666 | ? DW_ATE_signed_fixed | |
18667 | : DW_ATE_unsigned_fixed); | |
18668 | } | |
18669 | } | |
18670 | ||
6ccb9162 | 18671 | switch (encoding) |
c906108c | 18672 | { |
6ccb9162 UW |
18673 | case DW_ATE_address: |
18674 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 18675 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 18676 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
18677 | break; |
18678 | case DW_ATE_boolean: | |
19f392bc | 18679 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
18680 | break; |
18681 | case DW_ATE_complex_float: | |
103a685e TT |
18682 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
18683 | byte_order); | |
78134374 | 18684 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
18685 | { |
18686 | if (name == nullptr) | |
18687 | { | |
18688 | struct obstack *obstack | |
5e22e966 | 18689 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 18690 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
18691 | nullptr); |
18692 | } | |
18693 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
18694 | } | |
18695 | else | |
18696 | type = init_complex_type (name, type); | |
6ccb9162 UW |
18697 | break; |
18698 | case DW_ATE_decimal_float: | |
19f392bc | 18699 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
18700 | break; |
18701 | case DW_ATE_float: | |
103a685e | 18702 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
18703 | break; |
18704 | case DW_ATE_signed: | |
eb77c9df | 18705 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18706 | break; |
18707 | case DW_ATE_unsigned: | |
3b2b8fea TT |
18708 | if (cu->language == language_fortran |
18709 | && name | |
61012eef | 18710 | && startswith (name, "character(")) |
19f392bc UW |
18711 | type = init_character_type (objfile, bits, 1, name); |
18712 | else | |
eb77c9df | 18713 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
18714 | break; |
18715 | case DW_ATE_signed_char: | |
6e70227d | 18716 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
18717 | || cu->language == language_pascal |
18718 | || cu->language == language_fortran) | |
19f392bc UW |
18719 | type = init_character_type (objfile, bits, 0, name); |
18720 | else | |
eb77c9df | 18721 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18722 | break; |
18723 | case DW_ATE_unsigned_char: | |
868a0084 | 18724 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 18725 | || cu->language == language_pascal |
c44af4eb TT |
18726 | || cu->language == language_fortran |
18727 | || cu->language == language_rust) | |
19f392bc UW |
18728 | type = init_character_type (objfile, bits, 1, name); |
18729 | else | |
eb77c9df | 18730 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 18731 | break; |
75079b2b | 18732 | case DW_ATE_UTF: |
53e710ac | 18733 | { |
53e710ac PA |
18734 | if (bits == 16) |
18735 | type = builtin_type (arch)->builtin_char16; | |
18736 | else if (bits == 32) | |
18737 | type = builtin_type (arch)->builtin_char32; | |
18738 | else | |
18739 | { | |
b98664d3 | 18740 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 18741 | bits); |
eb77c9df | 18742 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
18743 | } |
18744 | return set_die_type (die, type, cu); | |
18745 | } | |
75079b2b | 18746 | break; |
09584414 JB |
18747 | case DW_ATE_signed_fixed: |
18748 | type = init_fixed_point_type (objfile, bits, 0, name); | |
bbcdf9ab | 18749 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 JB |
18750 | break; |
18751 | case DW_ATE_unsigned_fixed: | |
18752 | type = init_fixed_point_type (objfile, bits, 1, name); | |
bbcdf9ab | 18753 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 | 18754 | break; |
75079b2b | 18755 | |
6ccb9162 | 18756 | default: |
b98664d3 | 18757 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 18758 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 18759 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 18760 | break; |
c906108c | 18761 | } |
6ccb9162 | 18762 | |
0114d602 | 18763 | if (name && strcmp (name, "char") == 0) |
15152a54 | 18764 | type->set_has_no_signedness (true); |
0114d602 | 18765 | |
2b4424c3 TT |
18766 | maybe_set_alignment (cu, die, type); |
18767 | ||
db558e34 | 18768 | type->set_endianity_is_not_default (gdbarch_byte_order (arch) != byte_order); |
34877895 | 18769 | |
20a5fcbd TT |
18770 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_INT) |
18771 | { | |
18772 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); | |
529908cb | 18773 | if (attr != nullptr && attr->as_unsigned () <= 8 * TYPE_LENGTH (type)) |
20a5fcbd | 18774 | { |
529908cb | 18775 | unsigned real_bit_size = attr->as_unsigned (); |
20a5fcbd TT |
18776 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
18777 | /* Only use the attributes if they make sense together. */ | |
18778 | if (attr == nullptr | |
529908cb TT |
18779 | || (attr->as_unsigned () + real_bit_size |
18780 | <= 8 * TYPE_LENGTH (type))) | |
20a5fcbd TT |
18781 | { |
18782 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_size | |
18783 | = real_bit_size; | |
18784 | if (attr != nullptr) | |
18785 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_offset | |
529908cb | 18786 | = attr->as_unsigned (); |
20a5fcbd TT |
18787 | } |
18788 | } | |
18789 | } | |
18790 | ||
f792889a | 18791 | return set_die_type (die, type, cu); |
c906108c SS |
18792 | } |
18793 | ||
80180f79 SA |
18794 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
18795 | resulting value of the attribute into struct bound_prop. | |
18796 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
18797 | ||
18798 | static int | |
18799 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
18800 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
18801 | struct type *default_type) | |
80180f79 SA |
18802 | { |
18803 | struct dwarf2_property_baton *baton; | |
5e22e966 | 18804 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
18805 | struct objfile *objfile = per_objfile->objfile; |
18806 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 18807 | |
9a49df9d AB |
18808 | gdb_assert (default_type != NULL); |
18809 | ||
80180f79 SA |
18810 | if (attr == NULL || prop == NULL) |
18811 | return 0; | |
18812 | ||
4fc6c0d5 | 18813 | if (attr->form_is_block ()) |
80180f79 | 18814 | { |
8d749320 | 18815 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18816 | baton->property_type = default_type; |
80180f79 | 18817 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18818 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18819 | |
18820 | struct dwarf_block *block = attr->as_block (); | |
18821 | baton->locexpr.size = block->size; | |
18822 | baton->locexpr.data = block->data; | |
216a7e6b AB |
18823 | switch (attr->name) |
18824 | { | |
18825 | case DW_AT_string_length: | |
18826 | baton->locexpr.is_reference = true; | |
18827 | break; | |
18828 | default: | |
18829 | baton->locexpr.is_reference = false; | |
18830 | break; | |
18831 | } | |
8c2e4e06 SM |
18832 | |
18833 | prop->set_locexpr (baton); | |
18834 | gdb_assert (prop->baton () != NULL); | |
80180f79 | 18835 | } |
cd6c91b4 | 18836 | else if (attr->form_is_ref ()) |
80180f79 SA |
18837 | { |
18838 | struct dwarf2_cu *target_cu = cu; | |
18839 | struct die_info *target_die; | |
18840 | struct attribute *target_attr; | |
18841 | ||
18842 | target_die = follow_die_ref (die, attr, &target_cu); | |
18843 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
18844 | if (target_attr == NULL) |
18845 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
18846 | target_cu); | |
80180f79 SA |
18847 | if (target_attr == NULL) |
18848 | return 0; | |
18849 | ||
df25ebbd | 18850 | switch (target_attr->name) |
80180f79 | 18851 | { |
df25ebbd | 18852 | case DW_AT_location: |
cd6c91b4 | 18853 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 18854 | { |
8d749320 | 18855 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18856 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18857 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
8c2e4e06 SM |
18858 | prop->set_loclist (baton); |
18859 | gdb_assert (prop->baton () != NULL); | |
df25ebbd | 18860 | } |
4fc6c0d5 | 18861 | else if (target_attr->form_is_block ()) |
df25ebbd | 18862 | { |
8d749320 | 18863 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18864 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18865 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18866 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18867 | struct dwarf_block *block = target_attr->as_block (); |
18868 | baton->locexpr.size = block->size; | |
18869 | baton->locexpr.data = block->data; | |
9a49df9d | 18870 | baton->locexpr.is_reference = true; |
8c2e4e06 SM |
18871 | prop->set_locexpr (baton); |
18872 | gdb_assert (prop->baton () != NULL); | |
df25ebbd JB |
18873 | } |
18874 | else | |
18875 | { | |
18876 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18877 | "dynamic property"); | |
18878 | return 0; | |
18879 | } | |
18880 | break; | |
18881 | case DW_AT_data_member_location: | |
18882 | { | |
18883 | LONGEST offset; | |
18884 | ||
18885 | if (!handle_data_member_location (target_die, target_cu, | |
18886 | &offset)) | |
18887 | return 0; | |
18888 | ||
8d749320 | 18889 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18890 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 18891 | target_cu); |
df25ebbd JB |
18892 | baton->offset_info.offset = offset; |
18893 | baton->offset_info.type = die_type (target_die, target_cu); | |
8c2e4e06 | 18894 | prop->set_addr_offset (baton); |
df25ebbd JB |
18895 | break; |
18896 | } | |
80180f79 SA |
18897 | } |
18898 | } | |
cd6c91b4 | 18899 | else if (attr->form_is_constant ()) |
8c2e4e06 | 18900 | prop->set_const_val (attr->constant_value (0)); |
80180f79 SA |
18901 | else |
18902 | { | |
18903 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18904 | dwarf2_name (die, cu)); | |
18905 | return 0; | |
18906 | } | |
18907 | ||
18908 | return 1; | |
18909 | } | |
18910 | ||
09ba997f | 18911 | /* See read.h. */ |
9a49df9d | 18912 | |
09ba997f | 18913 | struct type * |
293e7e51 | 18914 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 18915 | { |
9a49df9d AB |
18916 | struct type *int_type; |
18917 | ||
18918 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
18919 | #define TRY_TYPE(F) \ |
18920 | int_type = (unsigned_p \ | |
18921 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
18922 | : objfile_type (objfile)->builtin_ ## F); \ | |
18923 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
18924 | return int_type |
18925 | ||
18926 | TRY_TYPE (char); | |
18927 | TRY_TYPE (short); | |
18928 | TRY_TYPE (int); | |
18929 | TRY_TYPE (long); | |
18930 | TRY_TYPE (long_long); | |
18931 | ||
18932 | #undef TRY_TYPE | |
18933 | ||
18934 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
18935 | } | |
18936 | ||
09ba997f | 18937 | /* See read.h. */ |
11a8b164 | 18938 | |
09ba997f | 18939 | struct type * |
293e7e51 | 18940 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 18941 | { |
293e7e51 SM |
18942 | int addr_size = this->per_cu->addr_size (); |
18943 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
18944 | } |
18945 | ||
b86352cf AB |
18946 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
18947 | present (which is valid) then compute the default type based on the | |
18948 | compilation units address size. */ | |
18949 | ||
18950 | static struct type * | |
18951 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
18952 | { | |
18953 | struct type *index_type = die_type (die, cu); | |
18954 | ||
18955 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18956 | without specifying a base type. | |
18957 | In that case, the base type must be set to the type of | |
18958 | the lower bound, upper bound or count, in that order, if any of these | |
18959 | three attributes references an object that has a type. | |
18960 | If no base type is found, the Dwarf-2 specifications say that | |
18961 | a signed integer type of size equal to the size of an address should | |
18962 | be used. | |
18963 | For the following C code: `extern char gdb_int [];' | |
18964 | GCC produces an empty range DIE. | |
18965 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
18966 | high bound or count are not yet handled by this code. */ | |
78134374 | 18967 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 18968 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
18969 | |
18970 | return index_type; | |
18971 | } | |
18972 | ||
a02abb62 JB |
18973 | /* Read the given DW_AT_subrange DIE. */ |
18974 | ||
f792889a | 18975 | static struct type * |
a02abb62 JB |
18976 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18977 | { | |
4c9ad8c2 | 18978 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18979 | struct type *range_type; |
18980 | struct attribute *attr; | |
729efb13 | 18981 | struct dynamic_prop low, high; |
4fae6e18 | 18982 | int low_default_is_valid; |
c451ebe5 | 18983 | int high_bound_is_count = 0; |
15d034d0 | 18984 | const char *name; |
d359392f | 18985 | ULONGEST negative_mask; |
e77813c8 | 18986 | |
b86352cf AB |
18987 | orig_base_type = read_subrange_index_type (die, cu); |
18988 | ||
4c9ad8c2 TT |
18989 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
18990 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18991 | creating the range type, but we use the result of check_typedef | |
18992 | when examining properties of the type. */ | |
18993 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18994 | |
7e314c57 JK |
18995 | /* The die_type call above may have already set the type for this DIE. */ |
18996 | range_type = get_die_type (die, cu); | |
18997 | if (range_type) | |
18998 | return range_type; | |
18999 | ||
8c2e4e06 | 19000 | high.set_const_val (0); |
729efb13 | 19001 | |
4fae6e18 JK |
19002 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
19003 | omitting DW_AT_lower_bound. */ | |
19004 | switch (cu->language) | |
6e70227d | 19005 | { |
4fae6e18 JK |
19006 | case language_c: |
19007 | case language_cplus: | |
8c2e4e06 | 19008 | low.set_const_val (0); |
4fae6e18 JK |
19009 | low_default_is_valid = 1; |
19010 | break; | |
19011 | case language_fortran: | |
8c2e4e06 | 19012 | low.set_const_val (1); |
4fae6e18 JK |
19013 | low_default_is_valid = 1; |
19014 | break; | |
19015 | case language_d: | |
4fae6e18 | 19016 | case language_objc: |
c44af4eb | 19017 | case language_rust: |
8c2e4e06 | 19018 | low.set_const_val (0); |
4fae6e18 JK |
19019 | low_default_is_valid = (cu->header.version >= 4); |
19020 | break; | |
19021 | case language_ada: | |
19022 | case language_m2: | |
19023 | case language_pascal: | |
8c2e4e06 | 19024 | low.set_const_val (1); |
4fae6e18 JK |
19025 | low_default_is_valid = (cu->header.version >= 4); |
19026 | break; | |
19027 | default: | |
8c2e4e06 | 19028 | low.set_const_val (0); |
4fae6e18 JK |
19029 | low_default_is_valid = 0; |
19030 | break; | |
a02abb62 JB |
19031 | } |
19032 | ||
e142c38c | 19033 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 19034 | if (attr != nullptr) |
9a49df9d | 19035 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 19036 | else if (!low_default_is_valid) |
b98664d3 | 19037 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
19038 | "- DIE at %s [in module %s]"), |
19039 | sect_offset_str (die->sect_off), | |
5e22e966 | 19040 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 19041 | |
506f5c41 TV |
19042 | struct attribute *attr_ub, *attr_count; |
19043 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 19044 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 19045 | { |
506f5c41 | 19046 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 19047 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 19048 | { |
c451ebe5 | 19049 | /* If bounds are constant do the final calculation here. */ |
8c2e4e06 SM |
19050 | if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) |
19051 | high.set_const_val (low.const_val () + high.const_val () - 1); | |
c451ebe5 SA |
19052 | else |
19053 | high_bound_is_count = 1; | |
c2ff108b | 19054 | } |
506f5c41 TV |
19055 | else |
19056 | { | |
19057 | if (attr_ub != NULL) | |
19058 | complaint (_("Unresolved DW_AT_upper_bound " | |
19059 | "- DIE at %s [in module %s]"), | |
19060 | sect_offset_str (die->sect_off), | |
5e22e966 | 19061 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
19062 | if (attr_count != NULL) |
19063 | complaint (_("Unresolved DW_AT_count " | |
19064 | "- DIE at %s [in module %s]"), | |
19065 | sect_offset_str (die->sect_off), | |
5e22e966 | 19066 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 19067 | } |
e77813c8 | 19068 | } |
a02abb62 | 19069 | |
4e962e74 TT |
19070 | LONGEST bias = 0; |
19071 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 19072 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 19073 | bias = bias_attr->constant_value (0); |
4e962e74 | 19074 | |
dbb9c2b1 JB |
19075 | /* Normally, the DWARF producers are expected to use a signed |
19076 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
19077 | But this is unfortunately not always the case, as witnessed | |
19078 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
19079 | is used instead. To work around that ambiguity, we treat | |
19080 | the bounds as signed, and thus sign-extend their values, when | |
19081 | the base type is signed. */ | |
6e70227d | 19082 | negative_mask = |
d359392f | 19083 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
8c2e4e06 | 19084 | if (low.kind () == PROP_CONST |
c6d940a9 | 19085 | && !base_type->is_unsigned () && (low.const_val () & negative_mask)) |
8c2e4e06 SM |
19086 | low.set_const_val (low.const_val () | negative_mask); |
19087 | if (high.kind () == PROP_CONST | |
c6d940a9 | 19088 | && !base_type->is_unsigned () && (high.const_val () & negative_mask)) |
8c2e4e06 | 19089 | high.set_const_val (high.const_val () | negative_mask); |
43bbcdc2 | 19090 | |
5bbd8269 AB |
19091 | /* Check for bit and byte strides. */ |
19092 | struct dynamic_prop byte_stride_prop; | |
19093 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
19094 | if (attr_byte_stride != nullptr) | |
19095 | { | |
293e7e51 | 19096 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
19097 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
19098 | prop_type); | |
19099 | } | |
19100 | ||
19101 | struct dynamic_prop bit_stride_prop; | |
19102 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
19103 | if (attr_bit_stride != nullptr) | |
19104 | { | |
19105 | /* It only makes sense to have either a bit or byte stride. */ | |
19106 | if (attr_byte_stride != nullptr) | |
19107 | { | |
19108 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
19109 | "- DIE at %s [in module %s]"), | |
19110 | sect_offset_str (die->sect_off), | |
5e22e966 | 19111 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
19112 | attr_bit_stride = nullptr; |
19113 | } | |
19114 | else | |
19115 | { | |
293e7e51 | 19116 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
19117 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
19118 | prop_type); | |
19119 | } | |
19120 | } | |
19121 | ||
19122 | if (attr_byte_stride != nullptr | |
19123 | || attr_bit_stride != nullptr) | |
19124 | { | |
19125 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
19126 | struct dynamic_prop *stride | |
19127 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
19128 | ||
19129 | range_type | |
19130 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
19131 | &high, bias, stride, byte_stride_p); | |
19132 | } | |
19133 | else | |
19134 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 19135 | |
c451ebe5 | 19136 | if (high_bound_is_count) |
599088e3 | 19137 | range_type->bounds ()->flag_upper_bound_is_count = 1; |
c451ebe5 | 19138 | |
c2ff108b JK |
19139 | /* Ada expects an empty array on no boundary attributes. */ |
19140 | if (attr == NULL && cu->language != language_ada) | |
8c2e4e06 | 19141 | range_type->bounds ()->high.set_undefined (); |
c2ff108b | 19142 | |
39cbfefa DJ |
19143 | name = dwarf2_name (die, cu); |
19144 | if (name) | |
d0e39ea2 | 19145 | range_type->set_name (name); |
6e70227d | 19146 | |
e142c38c | 19147 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 19148 | if (attr != nullptr) |
529908cb | 19149 | TYPE_LENGTH (range_type) = attr->constant_value (0); |
a02abb62 | 19150 | |
2b4424c3 TT |
19151 | maybe_set_alignment (cu, die, range_type); |
19152 | ||
7e314c57 JK |
19153 | set_die_type (die, range_type, cu); |
19154 | ||
19155 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
19156 | set_descriptive_type (range_type, die, cu); |
19157 | ||
7e314c57 | 19158 | return range_type; |
a02abb62 | 19159 | } |
6e70227d | 19160 | |
f792889a | 19161 | static struct type * |
81a17f79 JB |
19162 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
19163 | { | |
19164 | struct type *type; | |
81a17f79 | 19165 | |
5e22e966 | 19166 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 19167 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 19168 | |
74a2f8ff | 19169 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 19170 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
19171 | such a type, we treat it as a stub, and try to resolve it later on, |
19172 | when needed. */ | |
19173 | if (cu->language == language_ada) | |
b4b73759 | 19174 | type->set_is_stub (true); |
74a2f8ff | 19175 | |
f792889a | 19176 | return set_die_type (die, type, cu); |
81a17f79 | 19177 | } |
a02abb62 | 19178 | |
639d11d3 DC |
19179 | /* Read a single die and all its descendents. Set the die's sibling |
19180 | field to NULL; set other fields in the die correctly, and set all | |
19181 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
19182 | location of the info_ptr after reading all of those dies. PARENT | |
19183 | is the parent of the die in question. */ | |
19184 | ||
19185 | static struct die_info * | |
dee91e82 | 19186 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
19187 | const gdb_byte *info_ptr, |
19188 | const gdb_byte **new_info_ptr, | |
dee91e82 | 19189 | struct die_info *parent) |
639d11d3 DC |
19190 | { |
19191 | struct die_info *die; | |
d521ce57 | 19192 | const gdb_byte *cur_ptr; |
639d11d3 | 19193 | |
3e225074 | 19194 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
19195 | if (die == NULL) |
19196 | { | |
19197 | *new_info_ptr = cur_ptr; | |
19198 | return NULL; | |
19199 | } | |
93311388 | 19200 | store_in_ref_table (die, reader->cu); |
639d11d3 | 19201 | |
3e225074 | 19202 | if (die->has_children) |
bf6af496 | 19203 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
19204 | else |
19205 | { | |
19206 | die->child = NULL; | |
19207 | *new_info_ptr = cur_ptr; | |
19208 | } | |
19209 | ||
19210 | die->sibling = NULL; | |
19211 | die->parent = parent; | |
19212 | return die; | |
19213 | } | |
19214 | ||
19215 | /* Read a die, all of its descendents, and all of its siblings; set | |
19216 | all of the fields of all of the dies correctly. Arguments are as | |
19217 | in read_die_and_children. */ | |
19218 | ||
19219 | static struct die_info * | |
bf6af496 | 19220 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
19221 | const gdb_byte *info_ptr, |
19222 | const gdb_byte **new_info_ptr, | |
bf6af496 | 19223 | struct die_info *parent) |
639d11d3 DC |
19224 | { |
19225 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 19226 | const gdb_byte *cur_ptr; |
639d11d3 | 19227 | |
c906108c | 19228 | cur_ptr = info_ptr; |
639d11d3 DC |
19229 | first_die = last_sibling = NULL; |
19230 | ||
19231 | while (1) | |
c906108c | 19232 | { |
639d11d3 | 19233 | struct die_info *die |
dee91e82 | 19234 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 19235 | |
1d325ec1 | 19236 | if (die == NULL) |
c906108c | 19237 | { |
639d11d3 DC |
19238 | *new_info_ptr = cur_ptr; |
19239 | return first_die; | |
c906108c | 19240 | } |
1d325ec1 DJ |
19241 | |
19242 | if (!first_die) | |
19243 | first_die = die; | |
c906108c | 19244 | else |
1d325ec1 DJ |
19245 | last_sibling->sibling = die; |
19246 | ||
19247 | last_sibling = die; | |
c906108c | 19248 | } |
c906108c SS |
19249 | } |
19250 | ||
bf6af496 DE |
19251 | /* Read a die, all of its descendents, and all of its siblings; set |
19252 | all of the fields of all of the dies correctly. Arguments are as | |
19253 | in read_die_and_children. | |
19254 | This the main entry point for reading a DIE and all its children. */ | |
19255 | ||
19256 | static struct die_info * | |
19257 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
19258 | const gdb_byte *info_ptr, |
19259 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
19260 | struct die_info *parent) |
19261 | { | |
19262 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
19263 | new_info_ptr, parent); | |
19264 | ||
b4f54984 | 19265 | if (dwarf_die_debug) |
bf6af496 DE |
19266 | { |
19267 | fprintf_unfiltered (gdb_stdlog, | |
19268 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19269 | reader->die_section->get_name (), |
bf6af496 DE |
19270 | (unsigned) (info_ptr - reader->die_section->buffer), |
19271 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19272 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
19273 | } |
19274 | ||
19275 | return die; | |
19276 | } | |
19277 | ||
3019eac3 DE |
19278 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
19279 | attributes. | |
19280 | The caller is responsible for filling in the extra attributes | |
19281 | and updating (*DIEP)->num_attrs. | |
19282 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19283 | except for its child, sibling, and parent fields. */ |
93311388 | 19284 | |
d521ce57 | 19285 | static const gdb_byte * |
3019eac3 | 19286 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 19287 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 19288 | int num_extra_attrs) |
93311388 | 19289 | { |
b64f50a1 | 19290 | unsigned int abbrev_number, bytes_read, i; |
7c32eebb | 19291 | const struct abbrev_info *abbrev; |
93311388 DE |
19292 | struct die_info *die; |
19293 | struct dwarf2_cu *cu = reader->cu; | |
19294 | bfd *abfd = reader->abfd; | |
19295 | ||
9c541725 | 19296 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
19297 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19298 | info_ptr += bytes_read; | |
19299 | if (!abbrev_number) | |
19300 | { | |
19301 | *diep = NULL; | |
93311388 DE |
19302 | return info_ptr; |
19303 | } | |
19304 | ||
685af9cd | 19305 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 19306 | if (!abbrev) |
348e048f DE |
19307 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
19308 | abbrev_number, | |
19309 | bfd_get_filename (abfd)); | |
19310 | ||
3019eac3 | 19311 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 19312 | die->sect_off = sect_off; |
93311388 DE |
19313 | die->tag = abbrev->tag; |
19314 | die->abbrev = abbrev_number; | |
3e225074 | 19315 | die->has_children = abbrev->has_children; |
93311388 | 19316 | |
3019eac3 DE |
19317 | /* Make the result usable. |
19318 | The caller needs to update num_attrs after adding the extra | |
19319 | attributes. */ | |
93311388 DE |
19320 | die->num_attrs = abbrev->num_attrs; |
19321 | ||
7a5f294d | 19322 | bool any_need_reprocess = false; |
93311388 | 19323 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e | 19324 | { |
7a5f294d TT |
19325 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
19326 | info_ptr); | |
19327 | if (die->attrs[i].requires_reprocessing_p ()) | |
19328 | any_need_reprocess = true; | |
18a8505e AT |
19329 | } |
19330 | ||
052c8bb8 | 19331 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
529908cb TT |
19332 | if (attr != nullptr && attr->form_is_unsigned ()) |
19333 | cu->str_offsets_base = attr->as_unsigned (); | |
93311388 | 19334 | |
41144253 | 19335 | attr = die->attr (DW_AT_loclists_base); |
19336 | if (attr != nullptr) | |
529908cb | 19337 | cu->loclist_base = attr->as_unsigned (); |
41144253 | 19338 | |
a39fdb41 | 19339 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
19340 | if (maybe_addr_base.has_value ()) |
19341 | cu->addr_base = *maybe_addr_base; | |
d0ce17d8 CT |
19342 | |
19343 | attr = die->attr (DW_AT_rnglists_base); | |
19344 | if (attr != nullptr) | |
2b0c7f41 | 19345 | cu->rnglists_base = attr->as_unsigned (); |
d0ce17d8 | 19346 | |
7a5f294d TT |
19347 | if (any_need_reprocess) |
19348 | { | |
19349 | for (i = 0; i < abbrev->num_attrs; ++i) | |
19350 | { | |
19351 | if (die->attrs[i].requires_reprocessing_p ()) | |
19352 | read_attribute_reprocess (reader, &die->attrs[i], die->tag); | |
19353 | } | |
19354 | } | |
93311388 | 19355 | *diep = die; |
93311388 DE |
19356 | return info_ptr; |
19357 | } | |
19358 | ||
3019eac3 DE |
19359 | /* Read a die and all its attributes. |
19360 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19361 | except for its child, sibling, and parent fields. */ |
3019eac3 | 19362 | |
d521ce57 | 19363 | static const gdb_byte * |
3019eac3 | 19364 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 19365 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 19366 | { |
d521ce57 | 19367 | const gdb_byte *result; |
bf6af496 | 19368 | |
3e225074 | 19369 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 19370 | |
b4f54984 | 19371 | if (dwarf_die_debug) |
bf6af496 DE |
19372 | { |
19373 | fprintf_unfiltered (gdb_stdlog, | |
19374 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19375 | reader->die_section->get_name (), |
bf6af496 DE |
19376 | (unsigned) (info_ptr - reader->die_section->buffer), |
19377 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19378 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
19379 | } |
19380 | ||
19381 | return result; | |
3019eac3 | 19382 | } |
433df2d4 | 19383 | \f |
c906108c | 19384 | |
72bf9492 DJ |
19385 | /* Returns nonzero if TAG represents a type that we might generate a partial |
19386 | symbol for. */ | |
19387 | ||
19388 | static int | |
d8f62e84 | 19389 | is_type_tag_for_partial (int tag, enum language lang) |
72bf9492 DJ |
19390 | { |
19391 | switch (tag) | |
19392 | { | |
19393 | #if 0 | |
19394 | /* Some types that would be reasonable to generate partial symbols for, | |
d8f62e84 TT |
19395 | that we don't at present. Note that normally this does not |
19396 | matter, mainly because C compilers don't give names to these | |
19397 | types, but instead emit DW_TAG_typedef. */ | |
72bf9492 DJ |
19398 | case DW_TAG_file_type: |
19399 | case DW_TAG_ptr_to_member_type: | |
19400 | case DW_TAG_set_type: | |
19401 | case DW_TAG_string_type: | |
19402 | case DW_TAG_subroutine_type: | |
19403 | #endif | |
d8f62e84 TT |
19404 | |
19405 | /* GNAT may emit an array with a name, but no typedef, so we | |
19406 | need to make a symbol in this case. */ | |
19407 | case DW_TAG_array_type: | |
19408 | return lang == language_ada; | |
19409 | ||
72bf9492 DJ |
19410 | case DW_TAG_base_type: |
19411 | case DW_TAG_class_type: | |
680b30c7 | 19412 | case DW_TAG_interface_type: |
72bf9492 DJ |
19413 | case DW_TAG_enumeration_type: |
19414 | case DW_TAG_structure_type: | |
19415 | case DW_TAG_subrange_type: | |
19416 | case DW_TAG_typedef: | |
19417 | case DW_TAG_union_type: | |
19418 | return 1; | |
19419 | default: | |
19420 | return 0; | |
19421 | } | |
19422 | } | |
19423 | ||
19424 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
19425 | ||
19426 | static struct partial_die_info * | |
dee91e82 | 19427 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 19428 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 19429 | { |
dee91e82 | 19430 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19431 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 19432 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 19433 | unsigned int bytes_read; |
5afb4e99 | 19434 | unsigned int load_all = 0; |
72bf9492 DJ |
19435 | int nesting_level = 1; |
19436 | ||
19437 | parent_die = NULL; | |
19438 | last_die = NULL; | |
19439 | ||
7adf1e79 DE |
19440 | gdb_assert (cu->per_cu != NULL); |
19441 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
19442 | load_all = 1; |
19443 | ||
72bf9492 DJ |
19444 | cu->partial_dies |
19445 | = htab_create_alloc_ex (cu->header.length / 12, | |
19446 | partial_die_hash, | |
19447 | partial_die_eq, | |
19448 | NULL, | |
19449 | &cu->comp_unit_obstack, | |
19450 | hashtab_obstack_allocate, | |
19451 | dummy_obstack_deallocate); | |
19452 | ||
72bf9492 DJ |
19453 | while (1) |
19454 | { | |
7c32eebb TT |
19455 | const abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, |
19456 | &bytes_read); | |
72bf9492 DJ |
19457 | |
19458 | /* A NULL abbrev means the end of a series of children. */ | |
19459 | if (abbrev == NULL) | |
19460 | { | |
19461 | if (--nesting_level == 0) | |
cd9983dd YQ |
19462 | return first_die; |
19463 | ||
72bf9492 DJ |
19464 | info_ptr += bytes_read; |
19465 | last_die = parent_die; | |
19466 | parent_die = parent_die->die_parent; | |
19467 | continue; | |
19468 | } | |
19469 | ||
98bfdba5 PA |
19470 | /* Check for template arguments. We never save these; if |
19471 | they're seen, we just mark the parent, and go on our way. */ | |
19472 | if (parent_die != NULL | |
19473 | && cu->language == language_cplus | |
19474 | && (abbrev->tag == DW_TAG_template_type_param | |
19475 | || abbrev->tag == DW_TAG_template_value_param)) | |
19476 | { | |
19477 | parent_die->has_template_arguments = 1; | |
19478 | ||
19479 | if (!load_all) | |
19480 | { | |
19481 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 19482 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19483 | continue; |
19484 | } | |
19485 | } | |
19486 | ||
0d99eb77 | 19487 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
19488 | Skip their other children. */ |
19489 | if (!load_all | |
19490 | && cu->language == language_cplus | |
19491 | && parent_die != NULL | |
f9b5d5ea TV |
19492 | && parent_die->tag == DW_TAG_subprogram |
19493 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 19494 | { |
dee91e82 | 19495 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19496 | continue; |
19497 | } | |
19498 | ||
5afb4e99 DJ |
19499 | /* Check whether this DIE is interesting enough to save. Normally |
19500 | we would not be interested in members here, but there may be | |
19501 | later variables referencing them via DW_AT_specification (for | |
19502 | static members). */ | |
19503 | if (!load_all | |
d8f62e84 | 19504 | && !is_type_tag_for_partial (abbrev->tag, cu->language) |
72929c62 | 19505 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
19506 | && abbrev->tag != DW_TAG_enumerator |
19507 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 19508 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 19509 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 19510 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 19511 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 19512 | && abbrev->tag != DW_TAG_module |
95554aad | 19513 | && abbrev->tag != DW_TAG_member |
74921315 KS |
19514 | && abbrev->tag != DW_TAG_imported_unit |
19515 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
19516 | { |
19517 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19518 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
19519 | continue; |
19520 | } | |
19521 | ||
6f06d47b YQ |
19522 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
19523 | abbrev); | |
cd9983dd | 19524 | |
48fbe735 | 19525 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
19526 | |
19527 | /* This two-pass algorithm for processing partial symbols has a | |
19528 | high cost in cache pressure. Thus, handle some simple cases | |
19529 | here which cover the majority of C partial symbols. DIEs | |
19530 | which neither have specification tags in them, nor could have | |
19531 | specification tags elsewhere pointing at them, can simply be | |
19532 | processed and discarded. | |
19533 | ||
19534 | This segment is also optional; scan_partial_symbols and | |
19535 | add_partial_symbol will handle these DIEs if we chain | |
19536 | them in normally. When compilers which do not emit large | |
19537 | quantities of duplicate debug information are more common, | |
19538 | this code can probably be removed. */ | |
19539 | ||
19540 | /* Any complete simple types at the top level (pretty much all | |
19541 | of them, for a language without namespaces), can be processed | |
19542 | directly. */ | |
19543 | if (parent_die == NULL | |
cd9983dd YQ |
19544 | && pdi.has_specification == 0 |
19545 | && pdi.is_declaration == 0 | |
19546 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
19547 | || pdi.tag == DW_TAG_base_type | |
d8f62e84 | 19548 | || pdi.tag == DW_TAG_array_type |
cd9983dd | 19549 | || pdi.tag == DW_TAG_subrange_type)) |
72bf9492 | 19550 | { |
7d00ffec | 19551 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
19552 | add_partial_symbol (&pdi, cu); |
19553 | ||
cd9983dd | 19554 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19555 | continue; |
19556 | } | |
19557 | ||
d8228535 JK |
19558 | /* The exception for DW_TAG_typedef with has_children above is |
19559 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 19560 | type_name_or_error will error on such types later. |
d8228535 JK |
19561 | |
19562 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
19563 | it could not find the child DIEs referenced later, this is checked | |
19564 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
19565 | ||
cd9983dd | 19566 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 19567 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 19568 | "- DIE at %s [in module %s]"), |
cd9983dd | 19569 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 19570 | |
72bf9492 DJ |
19571 | /* If we're at the second level, and we're an enumerator, and |
19572 | our parent has no specification (meaning possibly lives in a | |
19573 | namespace elsewhere), then we can add the partial symbol now | |
19574 | instead of queueing it. */ | |
cd9983dd | 19575 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
19576 | && parent_die != NULL |
19577 | && parent_die->die_parent == NULL | |
19578 | && parent_die->tag == DW_TAG_enumeration_type | |
19579 | && parent_die->has_specification == 0) | |
19580 | { | |
7d00ffec | 19581 | if (pdi.raw_name == NULL) |
b98664d3 | 19582 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 19583 | else if (building_psymtab) |
f0fbb768 | 19584 | add_partial_symbol (&pdi, cu); |
72bf9492 | 19585 | |
cd9983dd | 19586 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19587 | continue; |
19588 | } | |
19589 | ||
cd9983dd | 19590 | struct partial_die_info *part_die |
6f06d47b | 19591 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 19592 | |
72bf9492 DJ |
19593 | /* We'll save this DIE so link it in. */ |
19594 | part_die->die_parent = parent_die; | |
19595 | part_die->die_sibling = NULL; | |
19596 | part_die->die_child = NULL; | |
19597 | ||
19598 | if (last_die && last_die == parent_die) | |
19599 | last_die->die_child = part_die; | |
19600 | else if (last_die) | |
19601 | last_die->die_sibling = part_die; | |
19602 | ||
19603 | last_die = part_die; | |
19604 | ||
19605 | if (first_die == NULL) | |
19606 | first_die = part_die; | |
19607 | ||
19608 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
19609 | find interesting need to be in the hash table, because we | |
19610 | also have the parent/sibling/child chains; only those that we | |
19611 | might refer to by offset later during partial symbol reading. | |
19612 | ||
19613 | For now this means things that might have be the target of a | |
19614 | DW_AT_specification, DW_AT_abstract_origin, or | |
19615 | DW_AT_extension. DW_AT_extension will refer only to | |
19616 | namespaces; DW_AT_abstract_origin refers to functions (and | |
19617 | many things under the function DIE, but we do not recurse | |
19618 | into function DIEs during partial symbol reading) and | |
19619 | possibly variables as well; DW_AT_specification refers to | |
19620 | declarations. Declarations ought to have the DW_AT_declaration | |
19621 | flag. It happens that GCC forgets to put it in sometimes, but | |
19622 | only for functions, not for types. | |
19623 | ||
19624 | Adding more things than necessary to the hash table is harmless | |
19625 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
19626 | wasted time in find_partial_die, when we reread the compilation |
19627 | unit with load_all_dies set. */ | |
72bf9492 | 19628 | |
5afb4e99 | 19629 | if (load_all |
72929c62 | 19630 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 19631 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
19632 | || abbrev->tag == DW_TAG_variable |
19633 | || abbrev->tag == DW_TAG_namespace | |
19634 | || part_die->is_declaration) | |
19635 | { | |
19636 | void **slot; | |
19637 | ||
19638 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
19639 | to_underlying (part_die->sect_off), |
19640 | INSERT); | |
72bf9492 DJ |
19641 | *slot = part_die; |
19642 | } | |
19643 | ||
72bf9492 | 19644 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 19645 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
19646 | languages we have to, so that we can get at method physnames |
19647 | to infer fully qualified class names, for DW_AT_specification, | |
19648 | and for C++ template arguments. For C++, we also look one level | |
19649 | inside functions to find template arguments (if the name of the | |
19650 | function does not already contain the template arguments). | |
bc30ff58 | 19651 | |
0a4b0913 AB |
19652 | For Ada and Fortran, we need to scan the children of subprograms |
19653 | and lexical blocks as well because these languages allow the | |
19654 | definition of nested entities that could be interesting for the | |
19655 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 19656 | if (last_die->has_children |
5afb4e99 DJ |
19657 | && (load_all |
19658 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 19659 | || last_die->tag == DW_TAG_module |
72bf9492 | 19660 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
19661 | || (cu->language == language_cplus |
19662 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
19663 | && (last_die->raw_name == NULL |
19664 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
19665 | || (cu->language != language_c |
19666 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 19667 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 19668 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 19669 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
19670 | || ((cu->language == language_ada |
19671 | || cu->language == language_fortran) | |
bc30ff58 JB |
19672 | && (last_die->tag == DW_TAG_subprogram |
19673 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
19674 | { |
19675 | nesting_level++; | |
19676 | parent_die = last_die; | |
19677 | continue; | |
19678 | } | |
19679 | ||
19680 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19681 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
19682 | |
19683 | /* Back to the top, do it again. */ | |
19684 | } | |
19685 | } | |
19686 | ||
6f06d47b | 19687 | partial_die_info::partial_die_info (sect_offset sect_off_, |
7c32eebb | 19688 | const struct abbrev_info *abbrev) |
6f06d47b YQ |
19689 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) |
19690 | { | |
19691 | } | |
19692 | ||
7d00ffec TT |
19693 | /* See class definition. */ |
19694 | ||
19695 | const char * | |
19696 | partial_die_info::name (dwarf2_cu *cu) | |
19697 | { | |
19698 | if (!canonical_name && raw_name != nullptr) | |
19699 | { | |
19700 | struct objfile *objfile = cu->per_objfile->objfile; | |
19701 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
19702 | canonical_name = 1; | |
19703 | } | |
19704 | ||
19705 | return raw_name; | |
19706 | } | |
19707 | ||
35cc7ed7 YQ |
19708 | /* Read a minimal amount of information into the minimal die structure. |
19709 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 19710 | |
48fbe735 YQ |
19711 | const gdb_byte * |
19712 | partial_die_info::read (const struct die_reader_specs *reader, | |
19713 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 19714 | { |
dee91e82 | 19715 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 19716 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 19717 | unsigned int i; |
c5aa993b | 19718 | int has_low_pc_attr = 0; |
c906108c | 19719 | int has_high_pc_attr = 0; |
91da1414 | 19720 | int high_pc_relative = 0; |
c906108c | 19721 | |
fd0a254f | 19722 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 19723 | { |
e7da7f8f | 19724 | attribute attr; |
7a5f294d | 19725 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
18a8505e | 19726 | /* String and address offsets that need to do the reprocessing have |
dda83cd7 | 19727 | already been read at this point, so there is no need to wait until |
18a8505e | 19728 | the loop terminates to do the reprocessing. */ |
7a5f294d | 19729 | if (attr.requires_reprocessing_p ()) |
d0ce17d8 | 19730 | read_attribute_reprocess (reader, &attr, tag); |
c906108c | 19731 | /* Store the data if it is of an attribute we want to keep in a |
dda83cd7 | 19732 | partial symbol table. */ |
c906108c SS |
19733 | switch (attr.name) |
19734 | { | |
19735 | case DW_AT_name: | |
48fbe735 | 19736 | switch (tag) |
71c25dea TT |
19737 | { |
19738 | case DW_TAG_compile_unit: | |
95554aad | 19739 | case DW_TAG_partial_unit: |
348e048f | 19740 | case DW_TAG_type_unit: |
71c25dea TT |
19741 | /* Compilation units have a DW_AT_name that is a filename, not |
19742 | a source language identifier. */ | |
19743 | case DW_TAG_enumeration_type: | |
19744 | case DW_TAG_enumerator: | |
19745 | /* These tags always have simple identifiers already; no need | |
19746 | to canonicalize them. */ | |
7d00ffec | 19747 | canonical_name = 1; |
2c830f54 | 19748 | raw_name = attr.as_string (); |
71c25dea TT |
19749 | break; |
19750 | default: | |
7d00ffec | 19751 | canonical_name = 0; |
2c830f54 | 19752 | raw_name = attr.as_string (); |
71c25dea TT |
19753 | break; |
19754 | } | |
c906108c | 19755 | break; |
31ef98ae | 19756 | case DW_AT_linkage_name: |
c906108c | 19757 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
19758 | /* Note that both forms of linkage name might appear. We |
19759 | assume they will be the same, and we only store the last | |
19760 | one we see. */ | |
95f982e5 | 19761 | linkage_name = attr.as_string (); |
c906108c SS |
19762 | break; |
19763 | case DW_AT_low_pc: | |
19764 | has_low_pc_attr = 1; | |
95f982e5 | 19765 | lowpc = attr.as_address (); |
c906108c SS |
19766 | break; |
19767 | case DW_AT_high_pc: | |
19768 | has_high_pc_attr = 1; | |
95f982e5 | 19769 | highpc = attr.as_address (); |
cd6c91b4 | 19770 | if (cu->header.version >= 4 && attr.form_is_constant ()) |
31aa7e4e | 19771 | high_pc_relative = 1; |
c906108c SS |
19772 | break; |
19773 | case DW_AT_location: | |
dda83cd7 SM |
19774 | /* Support the .debug_loc offsets. */ |
19775 | if (attr.form_is_block ()) | |
19776 | { | |
9d2246fc | 19777 | d.locdesc = attr.as_block (); |
dda83cd7 SM |
19778 | } |
19779 | else if (attr.form_is_section_offset ()) | |
19780 | { | |
4d3c2250 | 19781 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 SM |
19782 | } |
19783 | else | |
19784 | { | |
4d3c2250 KB |
19785 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
19786 | "partial symbol information"); | |
dda83cd7 | 19787 | } |
c906108c | 19788 | break; |
c906108c | 19789 | case DW_AT_external: |
c45bc3f8 | 19790 | is_external = attr.as_boolean (); |
c906108c SS |
19791 | break; |
19792 | case DW_AT_declaration: | |
c45bc3f8 | 19793 | is_declaration = attr.as_boolean (); |
c906108c SS |
19794 | break; |
19795 | case DW_AT_type: | |
48fbe735 | 19796 | has_type = 1; |
c906108c SS |
19797 | break; |
19798 | case DW_AT_abstract_origin: | |
19799 | case DW_AT_specification: | |
72bf9492 | 19800 | case DW_AT_extension: |
48fbe735 | 19801 | has_specification = 1; |
0826b30a | 19802 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 19803 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 19804 | || cu->per_cu->is_dwz); |
c906108c SS |
19805 | break; |
19806 | case DW_AT_sibling: | |
19807 | /* Ignore absolute siblings, they might point outside of | |
19808 | the current compile unit. */ | |
19809 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19810 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19811 | else |
b9502d3f | 19812 | { |
48fbe735 | 19813 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 19814 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 19815 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
19816 | |
19817 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19818 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 19819 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 19820 | reader->die_section->overflow_complaint (); |
b9502d3f | 19821 | else |
48fbe735 | 19822 | sibling = sibling_ptr; |
b9502d3f | 19823 | } |
c906108c | 19824 | break; |
dda83cd7 SM |
19825 | case DW_AT_byte_size: |
19826 | has_byte_size = 1; | |
19827 | break; | |
19828 | case DW_AT_const_value: | |
19829 | has_const_value = 1; | |
19830 | break; | |
68511cec CES |
19831 | case DW_AT_calling_convention: |
19832 | /* DWARF doesn't provide a way to identify a program's source-level | |
19833 | entry point. DW_AT_calling_convention attributes are only meant | |
19834 | to describe functions' calling conventions. | |
19835 | ||
19836 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19837 | Fortran, and before DWARF 4 DW_CC_program was the only |
19838 | piece of debugging information whose definition refers to | |
19839 | a 'main program' at all, several compilers marked Fortran | |
19840 | main programs with DW_CC_program --- even when those | |
19841 | functions use the standard calling conventions. | |
19842 | ||
19843 | Although DWARF now specifies a way to provide this | |
19844 | information, we support this practice for backward | |
19845 | compatibility. */ | |
529908cb | 19846 | if (attr.constant_value (0) == DW_CC_program |
0c1b455e | 19847 | && cu->language == language_fortran) |
48fbe735 | 19848 | main_subprogram = 1; |
68511cec | 19849 | break; |
481860b3 | 19850 | case DW_AT_inline: |
529908cb TT |
19851 | { |
19852 | LONGEST value = attr.constant_value (-1); | |
19853 | if (value == DW_INL_inlined | |
19854 | || value == DW_INL_declared_inlined) | |
19855 | may_be_inlined = 1; | |
19856 | } | |
481860b3 | 19857 | break; |
95554aad TT |
19858 | |
19859 | case DW_AT_import: | |
48fbe735 | 19860 | if (tag == DW_TAG_imported_unit) |
36586728 | 19861 | { |
0826b30a | 19862 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 19863 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
19864 | || cu->per_cu->is_dwz); |
19865 | } | |
95554aad TT |
19866 | break; |
19867 | ||
0c1b455e | 19868 | case DW_AT_main_subprogram: |
c45bc3f8 | 19869 | main_subprogram = attr.as_boolean (); |
0c1b455e TT |
19870 | break; |
19871 | ||
05caa1d2 TT |
19872 | case DW_AT_ranges: |
19873 | { | |
2b0c7f41 SM |
19874 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
19875 | on DWARF version). */ | |
19876 | ULONGEST ranges_offset = attr.as_unsigned (); | |
19877 | ||
19878 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
19879 | this value. */ | |
19880 | if (tag != DW_TAG_compile_unit) | |
19881 | ranges_offset += cu->gnu_ranges_base; | |
19882 | ||
05caa1d2 | 19883 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, |
d0ce17d8 | 19884 | nullptr, tag)) |
05caa1d2 TT |
19885 | has_pc_info = 1; |
19886 | } | |
19887 | break; | |
19888 | ||
c906108c SS |
19889 | default: |
19890 | break; | |
19891 | } | |
19892 | } | |
19893 | ||
10d06d82 TT |
19894 | /* For Ada, if both the name and the linkage name appear, we prefer |
19895 | the latter. This lets "catch exception" work better, regardless | |
19896 | of the order in which the name and linkage name were emitted. | |
19897 | Really, though, this is just a workaround for the fact that gdb | |
19898 | doesn't store both the name and the linkage name. */ | |
19899 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 19900 | raw_name = linkage_name; |
10d06d82 | 19901 | |
91da1414 | 19902 | if (high_pc_relative) |
48fbe735 | 19903 | highpc += lowpc; |
91da1414 | 19904 | |
9373cf26 JK |
19905 | if (has_low_pc_attr && has_high_pc_attr) |
19906 | { | |
19907 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19908 | eliminate duplicate copies of functions and vtables and such. | |
19909 | The linker will arbitrarily choose one and discard the others. | |
19910 | The AT_*_pc values for such functions refer to local labels in | |
19911 | these sections. If the section from that file was discarded, the | |
19912 | labels are not in the output, so the relocs get a value of 0. | |
19913 | If this is a discarded function, mark the pc bounds as invalid, | |
19914 | so that GDB will ignore it. */ | |
976ca316 | 19915 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 19916 | { |
976ca316 | 19917 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19918 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19919 | |
b98664d3 | 19920 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19921 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19922 | paddress (gdbarch, lowpc), |
19923 | sect_offset_str (sect_off), | |
9d8780f0 | 19924 | objfile_name (objfile)); |
9373cf26 JK |
19925 | } |
19926 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19927 | else if (lowpc >= highpc) |
9373cf26 | 19928 | { |
976ca316 | 19929 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19930 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19931 | |
b98664d3 | 19932 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19933 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19934 | paddress (gdbarch, lowpc), |
19935 | paddress (gdbarch, highpc), | |
19936 | sect_offset_str (sect_off), | |
9c541725 | 19937 | objfile_name (objfile)); |
9373cf26 JK |
19938 | } |
19939 | else | |
48fbe735 | 19940 | has_pc_info = 1; |
9373cf26 | 19941 | } |
85cbf3d3 | 19942 | |
c906108c SS |
19943 | return info_ptr; |
19944 | } | |
19945 | ||
72bf9492 DJ |
19946 | /* Find a cached partial DIE at OFFSET in CU. */ |
19947 | ||
d590ff25 YQ |
19948 | struct partial_die_info * |
19949 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19950 | { |
19951 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19952 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19953 | |
9a3c8263 | 19954 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19955 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19956 | to_underlying (sect_off))); |
72bf9492 | 19957 | |
72bf9492 DJ |
19958 | return lookup_die; |
19959 | } | |
19960 | ||
348e048f DE |
19961 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19962 | except in the case of .debug_types DIEs which do not reference | |
19963 | outside their CU (they do however referencing other types via | |
55f1336d | 19964 | DW_FORM_ref_sig8). */ |
72bf9492 | 19965 | |
122cf0f2 | 19966 | static const struct cu_partial_die_info |
9c541725 | 19967 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19968 | { |
976ca316 SM |
19969 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19970 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 19971 | struct partial_die_info *pd = NULL; |
72bf9492 | 19972 | |
36586728 | 19973 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 19974 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 19975 | { |
d590ff25 | 19976 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 19977 | if (pd != NULL) |
fb816e8b | 19978 | return { cu, pd }; |
0d99eb77 DE |
19979 | /* We missed recording what we needed. |
19980 | Load all dies and try again. */ | |
5afb4e99 | 19981 | } |
0d99eb77 DE |
19982 | else |
19983 | { | |
19984 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19985 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19986 | { |
9d8780f0 SM |
19987 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19988 | " external reference to offset %s [in module %s].\n"), | |
19989 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19990 | bfd_get_filename (objfile->obfd)); |
19991 | } | |
7188ed02 SM |
19992 | dwarf2_per_cu_data *per_cu |
19993 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 19994 | per_objfile); |
72bf9492 | 19995 | |
976ca316 | 19996 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 19997 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 19998 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 19999 | |
976ca316 | 20000 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
20001 | |
20002 | cu->last_used = 0; | |
20003 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 20004 | } |
5afb4e99 | 20005 | |
dee91e82 DE |
20006 | /* If we didn't find it, and not all dies have been loaded, |
20007 | load them all and try again. */ | |
20008 | ||
7188ed02 | 20009 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 20010 | { |
7188ed02 | 20011 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
20012 | |
20013 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
20014 | THIS_CU->cu may already be in use. So we can't just free it and | |
20015 | replace its DIEs with the ones we read in. Instead, we leave those | |
20016 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
20017 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
20018 | set. */ | |
976ca316 | 20019 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 20020 | |
7188ed02 | 20021 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
20022 | } |
20023 | ||
20024 | if (pd == NULL) | |
521894aa | 20025 | error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"), |
9d8780f0 | 20026 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 20027 | return { cu, pd }; |
72bf9492 DJ |
20028 | } |
20029 | ||
abc72ce4 DE |
20030 | /* See if we can figure out if the class lives in a namespace. We do |
20031 | this by looking for a member function; its demangled name will | |
20032 | contain namespace info, if there is any. */ | |
20033 | ||
20034 | static void | |
20035 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
20036 | struct dwarf2_cu *cu) | |
20037 | { | |
20038 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
20039 | what template types look like, because the demangler | |
20040 | frequently doesn't give the same name as the debug info. We | |
20041 | could fix this by only using the demangled name to get the | |
20042 | prefix (but see comment in read_structure_type). */ | |
20043 | ||
20044 | struct partial_die_info *real_pdi; | |
20045 | struct partial_die_info *child_pdi; | |
20046 | ||
20047 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
20048 | we should not do this. We'll prepend the parent's fully qualified | |
20049 | name when we create the partial symbol. */ | |
20050 | ||
20051 | real_pdi = struct_pdi; | |
20052 | while (real_pdi->has_specification) | |
fb816e8b | 20053 | { |
122cf0f2 AB |
20054 | auto res = find_partial_die (real_pdi->spec_offset, |
20055 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
20056 | real_pdi = res.pdi; |
20057 | cu = res.cu; | |
20058 | } | |
abc72ce4 DE |
20059 | |
20060 | if (real_pdi->die_parent != NULL) | |
20061 | return; | |
20062 | ||
20063 | for (child_pdi = struct_pdi->die_child; | |
20064 | child_pdi != NULL; | |
20065 | child_pdi = child_pdi->die_sibling) | |
20066 | { | |
20067 | if (child_pdi->tag == DW_TAG_subprogram | |
20068 | && child_pdi->linkage_name != NULL) | |
20069 | { | |
43816ebc | 20070 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
20071 | (cu->language_defn->class_name_from_physname |
20072 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
20073 | if (actual_class_name != NULL) |
20074 | { | |
5e22e966 | 20075 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
20076 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
20077 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
20078 | } |
20079 | break; | |
20080 | } | |
20081 | } | |
20082 | } | |
20083 | ||
25c11aca TV |
20084 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
20085 | attribute. */ | |
20086 | ||
20087 | static bool | |
20088 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
20089 | { | |
20090 | switch (tag) | |
20091 | { | |
20092 | case DW_TAG_constant: | |
20093 | case DW_TAG_enumerator: | |
20094 | case DW_TAG_formal_parameter: | |
20095 | case DW_TAG_template_value_param: | |
20096 | case DW_TAG_variable: | |
20097 | return true; | |
20098 | } | |
20099 | ||
20100 | return false; | |
20101 | } | |
20102 | ||
52356b79 YQ |
20103 | void |
20104 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 20105 | { |
abc72ce4 DE |
20106 | /* Once we've fixed up a die, there's no point in doing so again. |
20107 | This also avoids a memory leak if we were to call | |
20108 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 20109 | if (fixup_called) |
abc72ce4 DE |
20110 | return; |
20111 | ||
72bf9492 DJ |
20112 | /* If we found a reference attribute and the DIE has no name, try |
20113 | to find a name in the referred to DIE. */ | |
20114 | ||
7d00ffec | 20115 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
20116 | { |
20117 | struct partial_die_info *spec_die; | |
72bf9492 | 20118 | |
122cf0f2 | 20119 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
20120 | spec_die = res.pdi; |
20121 | cu = res.cu; | |
72bf9492 | 20122 | |
52356b79 | 20123 | spec_die->fixup (cu); |
72bf9492 | 20124 | |
7d00ffec | 20125 | if (spec_die->raw_name) |
72bf9492 | 20126 | { |
7d00ffec TT |
20127 | raw_name = spec_die->raw_name; |
20128 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
20129 | |
20130 | /* Copy DW_AT_external attribute if it is set. */ | |
20131 | if (spec_die->is_external) | |
52356b79 | 20132 | is_external = spec_die->is_external; |
72bf9492 DJ |
20133 | } |
20134 | } | |
20135 | ||
25c11aca TV |
20136 | if (!has_const_value && has_specification |
20137 | && can_have_DW_AT_const_value_p (tag)) | |
20138 | { | |
20139 | struct partial_die_info *spec_die; | |
20140 | ||
20141 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
20142 | spec_die = res.pdi; | |
20143 | cu = res.cu; | |
20144 | ||
20145 | spec_die->fixup (cu); | |
20146 | ||
20147 | if (spec_die->has_const_value) | |
20148 | { | |
20149 | /* Copy DW_AT_const_value attribute if it is set. */ | |
20150 | has_const_value = spec_die->has_const_value; | |
20151 | } | |
20152 | } | |
20153 | ||
72bf9492 | 20154 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 20155 | |
7d00ffec TT |
20156 | if (raw_name == NULL && tag == DW_TAG_namespace) |
20157 | { | |
20158 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
20159 | canonical_name = 1; | |
20160 | } | |
72bf9492 | 20161 | |
abc72ce4 DE |
20162 | /* If there is no parent die to provide a namespace, and there are |
20163 | children, see if we can determine the namespace from their linkage | |
122d1940 | 20164 | name. */ |
abc72ce4 | 20165 | if (cu->language == language_cplus |
5e22e966 | 20166 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
20167 | && die_parent == NULL |
20168 | && has_children | |
20169 | && (tag == DW_TAG_class_type | |
20170 | || tag == DW_TAG_structure_type | |
20171 | || tag == DW_TAG_union_type)) | |
20172 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 20173 | |
53832f31 TT |
20174 | /* GCC might emit a nameless struct or union that has a linkage |
20175 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 20176 | if (raw_name == NULL |
52356b79 YQ |
20177 | && (tag == DW_TAG_class_type |
20178 | || tag == DW_TAG_interface_type | |
20179 | || tag == DW_TAG_structure_type | |
20180 | || tag == DW_TAG_union_type) | |
20181 | && linkage_name != NULL) | |
53832f31 | 20182 | { |
43816ebc TT |
20183 | gdb::unique_xmalloc_ptr<char> demangled |
20184 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
20185 | if (demangled != nullptr) | |
53832f31 | 20186 | { |
96408a79 SA |
20187 | const char *base; |
20188 | ||
20189 | /* Strip any leading namespaces/classes, keep only the base name. | |
20190 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
20191 | base = strrchr (demangled.get (), ':'); |
20192 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
20193 | base++; |
20194 | else | |
43816ebc | 20195 | base = demangled.get (); |
96408a79 | 20196 | |
5e22e966 | 20197 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
20198 | raw_name = objfile->intern (base); |
20199 | canonical_name = 1; | |
53832f31 TT |
20200 | } |
20201 | } | |
20202 | ||
52356b79 | 20203 | fixup_called = 1; |
72bf9492 DJ |
20204 | } |
20205 | ||
d0ce17d8 | 20206 | /* Read the .debug_loclists or .debug_rnglists header (they are the same format) |
a1c40103 SM |
20207 | contents from the given SECTION in the HEADER. |
20208 | ||
20209 | HEADER_OFFSET is the offset of the header in the section. */ | |
41144253 | 20210 | static void |
d0ce17d8 | 20211 | read_loclists_rnglists_header (struct loclists_rnglists_header *header, |
a1c40103 SM |
20212 | struct dwarf2_section_info *section, |
20213 | sect_offset header_offset) | |
41144253 | 20214 | { |
20215 | unsigned int bytes_read; | |
20216 | bfd *abfd = section->get_bfd_owner (); | |
a1c40103 SM |
20217 | const gdb_byte *info_ptr = section->buffer + to_underlying (header_offset); |
20218 | ||
41144253 | 20219 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); |
20220 | info_ptr += bytes_read; | |
a1c40103 | 20221 | |
41144253 | 20222 | header->version = read_2_bytes (abfd, info_ptr); |
20223 | info_ptr += 2; | |
a1c40103 | 20224 | |
41144253 | 20225 | header->addr_size = read_1_byte (abfd, info_ptr); |
20226 | info_ptr += 1; | |
a1c40103 | 20227 | |
41144253 | 20228 | header->segment_collector_size = read_1_byte (abfd, info_ptr); |
20229 | info_ptr += 1; | |
a1c40103 | 20230 | |
41144253 | 20231 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); |
20232 | } | |
20233 | ||
20234 | /* Return the DW_AT_loclists_base value for the CU. */ | |
20235 | static ULONGEST | |
20236 | lookup_loclist_base (struct dwarf2_cu *cu) | |
20237 | { | |
20238 | /* For the .dwo unit, the loclist_base points to the first offset following | |
20239 | the header. The header consists of the following entities- | |
20240 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
20241 | bit format) | |
20242 | 2. version (2 bytes) | |
20243 | 3. address size (1 byte) | |
20244 | 4. segment selector size (1 byte) | |
20245 | 5. offset entry count (4 bytes) | |
20246 | These sizes are derived as per the DWARFv5 standard. */ | |
20247 | if (cu->dwo_unit != nullptr) | |
20248 | { | |
20249 | if (cu->header.initial_length_size == 4) | |
20250 | return LOCLIST_HEADER_SIZE32; | |
20251 | return LOCLIST_HEADER_SIZE64; | |
20252 | } | |
20253 | return cu->loclist_base; | |
20254 | } | |
20255 | ||
20256 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
20257 | array of offsets in the .debug_loclists section. */ | |
e57933dc SM |
20258 | |
20259 | static sect_offset | |
41144253 | 20260 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) |
20261 | { | |
976ca316 SM |
20262 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20263 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 20264 | bfd *abfd = objfile->obfd; |
a1c40103 SM |
20265 | ULONGEST loclist_header_size = |
20266 | (cu->header.initial_length_size == 4 ? LOCLIST_HEADER_SIZE32 | |
20267 | : LOCLIST_HEADER_SIZE64); | |
41144253 | 20268 | ULONGEST loclist_base = lookup_loclist_base (cu); |
05787bad SM |
20269 | |
20270 | /* Offset in .debug_loclists of the offset for LOCLIST_INDEX. */ | |
20271 | ULONGEST start_offset = | |
20272 | loclist_base + loclist_index * cu->header.offset_size; | |
20273 | ||
a1c40103 | 20274 | /* Get loclists section. */ |
41144253 | 20275 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
20276 | ||
a1c40103 | 20277 | /* Read the loclists section content. */ |
41144253 | 20278 | section->read (objfile); |
20279 | if (section->buffer == NULL) | |
a0c1eeba SM |
20280 | error (_("DW_FORM_loclistx used without .debug_loclists " |
20281 | "section [in module %s]"), objfile_name (objfile)); | |
20282 | ||
a1c40103 SM |
20283 | /* DW_AT_loclists_base points after the .debug_loclists contribution header, |
20284 | so if loclist_base is smaller than the header size, we have a problem. */ | |
20285 | if (loclist_base < loclist_header_size) | |
20286 | error (_("DW_AT_loclists_base is smaller than header size [in module %s]"), | |
20287 | objfile_name (objfile)); | |
20288 | ||
20289 | /* Read the header of the loclists contribution. */ | |
d0ce17d8 | 20290 | struct loclists_rnglists_header header; |
a1c40103 SM |
20291 | read_loclists_rnglists_header (&header, section, |
20292 | (sect_offset) (loclist_base - loclist_header_size)); | |
20293 | ||
20294 | /* Verify the loclist index is valid. */ | |
41144253 | 20295 | if (loclist_index >= header.offset_entry_count) |
a0c1eeba SM |
20296 | error (_("DW_FORM_loclistx pointing outside of " |
20297 | ".debug_loclists offset array [in module %s]"), | |
20298 | objfile_name (objfile)); | |
20299 | ||
05787bad SM |
20300 | /* Validate that reading won't go beyond the end of the section. */ |
20301 | if (start_offset + cu->header.offset_size > section->size) | |
20302 | error (_("Reading DW_FORM_loclistx index beyond end of" | |
20303 | ".debug_loclists section [in module %s]"), | |
20304 | objfile_name (objfile)); | |
20305 | ||
20306 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
41144253 | 20307 | |
20308 | if (cu->header.offset_size == 4) | |
e57933dc | 20309 | return (sect_offset) (bfd_get_32 (abfd, info_ptr) + loclist_base); |
41144253 | 20310 | else |
e57933dc | 20311 | return (sect_offset) (bfd_get_64 (abfd, info_ptr) + loclist_base); |
41144253 | 20312 | } |
20313 | ||
d0ce17d8 CT |
20314 | /* Given a DW_FORM_rnglistx value RNGLIST_INDEX, fetch the offset from the |
20315 | array of offsets in the .debug_rnglists section. */ | |
e57933dc SM |
20316 | |
20317 | static sect_offset | |
d0ce17d8 CT |
20318 | read_rnglist_index (struct dwarf2_cu *cu, ULONGEST rnglist_index, |
20319 | dwarf_tag tag) | |
20320 | { | |
20321 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
20322 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
20323 | bfd *abfd = objfile->obfd; | |
20324 | ULONGEST rnglist_header_size = | |
20325 | (cu->header.initial_length_size == 4 ? RNGLIST_HEADER_SIZE32 | |
20326 | : RNGLIST_HEADER_SIZE64); | |
2b0c7f41 SM |
20327 | |
20328 | /* When reading a DW_FORM_rnglistx from a DWO, we read from the DWO's | |
20329 | .debug_rnglists.dwo section. The rnglists base given in the skeleton | |
20330 | doesn't apply. */ | |
d0ce17d8 | 20331 | ULONGEST rnglist_base = |
2b0c7f41 | 20332 | (cu->dwo_unit != nullptr) ? rnglist_header_size : cu->rnglists_base; |
5e4d9bbc SM |
20333 | |
20334 | /* Offset in .debug_rnglists of the offset for RNGLIST_INDEX. */ | |
d0ce17d8 CT |
20335 | ULONGEST start_offset = |
20336 | rnglist_base + rnglist_index * cu->header.offset_size; | |
20337 | ||
20338 | /* Get rnglists section. */ | |
20339 | struct dwarf2_section_info *section = cu_debug_rnglists_section (cu, tag); | |
20340 | ||
20341 | /* Read the rnglists section content. */ | |
20342 | section->read (objfile); | |
20343 | if (section->buffer == nullptr) | |
20344 | error (_("DW_FORM_rnglistx used without .debug_rnglists section " | |
20345 | "[in module %s]"), | |
20346 | objfile_name (objfile)); | |
20347 | ||
a1c40103 SM |
20348 | /* DW_AT_rnglists_base points after the .debug_rnglists contribution header, |
20349 | so if rnglist_base is smaller than the header size, we have a problem. */ | |
20350 | if (rnglist_base < rnglist_header_size) | |
20351 | error (_("DW_AT_rnglists_base is smaller than header size [in module %s]"), | |
20352 | objfile_name (objfile)); | |
20353 | ||
20354 | /* Read the header of the rnglists contribution. */ | |
d0ce17d8 | 20355 | struct loclists_rnglists_header header; |
a1c40103 SM |
20356 | read_loclists_rnglists_header (&header, section, |
20357 | (sect_offset) (rnglist_base - rnglist_header_size)); | |
20358 | ||
20359 | /* Verify the rnglist index is valid. */ | |
d0ce17d8 CT |
20360 | if (rnglist_index >= header.offset_entry_count) |
20361 | error (_("DW_FORM_rnglistx index pointing outside of " | |
20362 | ".debug_rnglists offset array [in module %s]"), | |
20363 | objfile_name (objfile)); | |
20364 | ||
d0ce17d8 | 20365 | /* Validate that reading won't go beyond the end of the section. */ |
5e4d9bbc | 20366 | if (start_offset + cu->header.offset_size > section->size) |
d0ce17d8 CT |
20367 | error (_("Reading DW_FORM_rnglistx index beyond end of" |
20368 | ".debug_rnglists section [in module %s]"), | |
20369 | objfile_name (objfile)); | |
20370 | ||
20371 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
20372 | ||
20373 | if (cu->header.offset_size == 4) | |
e57933dc | 20374 | return (sect_offset) (read_4_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 | 20375 | else |
e57933dc | 20376 | return (sect_offset) (read_8_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 CT |
20377 | } |
20378 | ||
18a8505e AT |
20379 | /* Process the attributes that had to be skipped in the first round. These |
20380 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
20381 | They could not have been processed in the first round, because at the time | |
20382 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
20383 | static void |
20384 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 20385 | struct attribute *attr, dwarf_tag tag) |
18a8505e AT |
20386 | { |
20387 | struct dwarf2_cu *cu = reader->cu; | |
20388 | switch (attr->form) | |
20389 | { | |
20390 | case DW_FORM_addrx: | |
20391 | case DW_FORM_GNU_addr_index: | |
36d378cf TT |
20392 | attr->set_address (read_addr_index (cu, |
20393 | attr->as_unsigned_reprocess ())); | |
dda83cd7 | 20394 | break; |
41144253 | 20395 | case DW_FORM_loclistx: |
b1829e1b | 20396 | { |
e57933dc | 20397 | sect_offset loclists_sect_off |
b1829e1b SM |
20398 | = read_loclist_index (cu, attr->as_unsigned_reprocess ()); |
20399 | ||
e57933dc | 20400 | attr->set_unsigned (to_underlying (loclists_sect_off)); |
b1829e1b SM |
20401 | } |
20402 | break; | |
d0ce17d8 | 20403 | case DW_FORM_rnglistx: |
b1829e1b | 20404 | { |
e57933dc | 20405 | sect_offset rnglists_sect_off |
b1829e1b SM |
20406 | = read_rnglist_index (cu, attr->as_unsigned_reprocess (), tag); |
20407 | ||
e57933dc | 20408 | attr->set_unsigned (to_underlying (rnglists_sect_off)); |
b1829e1b | 20409 | } |
dda83cd7 | 20410 | break; |
18a8505e AT |
20411 | case DW_FORM_strx: |
20412 | case DW_FORM_strx1: | |
20413 | case DW_FORM_strx2: | |
20414 | case DW_FORM_strx3: | |
20415 | case DW_FORM_strx4: | |
20416 | case DW_FORM_GNU_str_index: | |
20417 | { | |
fe56917a | 20418 | unsigned int str_index = attr->as_unsigned_reprocess (); |
c6481205 | 20419 | gdb_assert (!attr->canonical_string_p ()); |
18a8505e | 20420 | if (reader->dwo_file != NULL) |
c6481205 TT |
20421 | attr->set_string_noncanonical (read_dwo_str_index (reader, |
20422 | str_index)); | |
18a8505e | 20423 | else |
c6481205 TT |
20424 | attr->set_string_noncanonical (read_stub_str_index (cu, |
20425 | str_index)); | |
18a8505e AT |
20426 | break; |
20427 | } | |
20428 | default: | |
20429 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
20430 | } | |
20431 | } | |
20432 | ||
a8329558 | 20433 | /* Read an attribute value described by an attribute form. */ |
c906108c | 20434 | |
d521ce57 | 20435 | static const gdb_byte * |
dee91e82 DE |
20436 | read_attribute_value (const struct die_reader_specs *reader, |
20437 | struct attribute *attr, unsigned form, | |
7a5f294d | 20438 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 20439 | { |
dee91e82 | 20440 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
20441 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20442 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 20443 | bfd *abfd = reader->abfd; |
e7c27a73 | 20444 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
20445 | unsigned int bytes_read; |
20446 | struct dwarf_block *blk; | |
20447 | ||
aead7601 | 20448 | attr->form = (enum dwarf_form) form; |
a8329558 | 20449 | switch (form) |
c906108c | 20450 | { |
c906108c | 20451 | case DW_FORM_ref_addr: |
7c290a04 TT |
20452 | if (cu_header->version == 2) |
20453 | attr->set_unsigned (cu_header->read_address (abfd, info_ptr, | |
414ad644 | 20454 | &bytes_read)); |
ae411497 | 20455 | else |
7c290a04 | 20456 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20457 | &bytes_read)); |
ae411497 TT |
20458 | info_ptr += bytes_read; |
20459 | break; | |
36586728 | 20460 | case DW_FORM_GNU_ref_alt: |
7c290a04 | 20461 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20462 | &bytes_read)); |
36586728 TT |
20463 | info_ptr += bytes_read; |
20464 | break; | |
ae411497 | 20465 | case DW_FORM_addr: |
08feed99 TT |
20466 | { |
20467 | struct gdbarch *gdbarch = objfile->arch (); | |
7c290a04 | 20468 | CORE_ADDR addr = cu_header->read_address (abfd, info_ptr, &bytes_read); |
36d378cf TT |
20469 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr); |
20470 | attr->set_address (addr); | |
08feed99 TT |
20471 | info_ptr += bytes_read; |
20472 | } | |
c906108c SS |
20473 | break; |
20474 | case DW_FORM_block2: | |
7b5a2f43 | 20475 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20476 | blk->size = read_2_bytes (abfd, info_ptr); |
20477 | info_ptr += 2; | |
20478 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20479 | info_ptr += blk->size; | |
9d2246fc | 20480 | attr->set_block (blk); |
c906108c SS |
20481 | break; |
20482 | case DW_FORM_block4: | |
7b5a2f43 | 20483 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20484 | blk->size = read_4_bytes (abfd, info_ptr); |
20485 | info_ptr += 4; | |
20486 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20487 | info_ptr += blk->size; | |
9d2246fc | 20488 | attr->set_block (blk); |
c906108c SS |
20489 | break; |
20490 | case DW_FORM_data2: | |
414ad644 | 20491 | attr->set_unsigned (read_2_bytes (abfd, info_ptr)); |
c906108c SS |
20492 | info_ptr += 2; |
20493 | break; | |
20494 | case DW_FORM_data4: | |
414ad644 | 20495 | attr->set_unsigned (read_4_bytes (abfd, info_ptr)); |
c906108c SS |
20496 | info_ptr += 4; |
20497 | break; | |
20498 | case DW_FORM_data8: | |
414ad644 | 20499 | attr->set_unsigned (read_8_bytes (abfd, info_ptr)); |
c906108c SS |
20500 | info_ptr += 8; |
20501 | break; | |
0224619f JK |
20502 | case DW_FORM_data16: |
20503 | blk = dwarf_alloc_block (cu); | |
20504 | blk->size = 16; | |
20505 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
20506 | info_ptr += 16; | |
9d2246fc | 20507 | attr->set_block (blk); |
0224619f | 20508 | break; |
2dc7f7b3 | 20509 | case DW_FORM_sec_offset: |
7c290a04 | 20510 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20511 | &bytes_read)); |
2dc7f7b3 TT |
20512 | info_ptr += bytes_read; |
20513 | break; | |
41144253 | 20514 | case DW_FORM_loclistx: |
20515 | { | |
7a5f294d TT |
20516 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20517 | &bytes_read)); | |
20518 | info_ptr += bytes_read; | |
41144253 | 20519 | } |
20520 | break; | |
c906108c | 20521 | case DW_FORM_string: |
c6481205 TT |
20522 | attr->set_string_noncanonical (read_direct_string (abfd, info_ptr, |
20523 | &bytes_read)); | |
c906108c SS |
20524 | info_ptr += bytes_read; |
20525 | break; | |
4bdf3d34 | 20526 | case DW_FORM_strp: |
36586728 TT |
20527 | if (!cu->per_cu->is_dwz) |
20528 | { | |
c6481205 TT |
20529 | attr->set_string_noncanonical |
20530 | (read_indirect_string (per_objfile, | |
20531 | abfd, info_ptr, cu_header, | |
20532 | &bytes_read)); | |
36586728 TT |
20533 | info_ptr += bytes_read; |
20534 | break; | |
20535 | } | |
20536 | /* FALLTHROUGH */ | |
43988095 JK |
20537 | case DW_FORM_line_strp: |
20538 | if (!cu->per_cu->is_dwz) | |
20539 | { | |
c6481205 TT |
20540 | attr->set_string_noncanonical |
20541 | (per_objfile->read_line_string (info_ptr, cu_header, | |
20542 | &bytes_read)); | |
43988095 JK |
20543 | info_ptr += bytes_read; |
20544 | break; | |
20545 | } | |
20546 | /* FALLTHROUGH */ | |
36586728 TT |
20547 | case DW_FORM_GNU_strp_alt: |
20548 | { | |
a7308ce0 | 20549 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd, true); |
8266302d TT |
20550 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
20551 | &bytes_read); | |
36586728 | 20552 | |
c6481205 TT |
20553 | attr->set_string_noncanonical |
20554 | (dwz->read_string (objfile, str_offset)); | |
36586728 TT |
20555 | info_ptr += bytes_read; |
20556 | } | |
4bdf3d34 | 20557 | break; |
2dc7f7b3 | 20558 | case DW_FORM_exprloc: |
c906108c | 20559 | case DW_FORM_block: |
7b5a2f43 | 20560 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20561 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20562 | info_ptr += bytes_read; | |
20563 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20564 | info_ptr += blk->size; | |
9d2246fc | 20565 | attr->set_block (blk); |
c906108c SS |
20566 | break; |
20567 | case DW_FORM_block1: | |
7b5a2f43 | 20568 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20569 | blk->size = read_1_byte (abfd, info_ptr); |
20570 | info_ptr += 1; | |
20571 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20572 | info_ptr += blk->size; | |
9d2246fc | 20573 | attr->set_block (blk); |
c906108c SS |
20574 | break; |
20575 | case DW_FORM_data1: | |
c906108c | 20576 | case DW_FORM_flag: |
414ad644 | 20577 | attr->set_unsigned (read_1_byte (abfd, info_ptr)); |
c906108c SS |
20578 | info_ptr += 1; |
20579 | break; | |
2dc7f7b3 | 20580 | case DW_FORM_flag_present: |
414ad644 | 20581 | attr->set_unsigned (1); |
2dc7f7b3 | 20582 | break; |
c906108c | 20583 | case DW_FORM_sdata: |
1bc397c5 | 20584 | attr->set_signed (read_signed_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20585 | info_ptr += bytes_read; |
20586 | break; | |
18a8505e | 20587 | case DW_FORM_rnglistx: |
7a5f294d TT |
20588 | { |
20589 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, | |
20590 | &bytes_read)); | |
20591 | info_ptr += bytes_read; | |
20592 | } | |
20593 | break; | |
d0ce17d8 | 20594 | case DW_FORM_udata: |
414ad644 | 20595 | attr->set_unsigned (read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20596 | info_ptr += bytes_read; |
20597 | break; | |
20598 | case DW_FORM_ref1: | |
7c290a04 | 20599 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20600 | + read_1_byte (abfd, info_ptr))); |
c906108c SS |
20601 | info_ptr += 1; |
20602 | break; | |
20603 | case DW_FORM_ref2: | |
7c290a04 | 20604 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20605 | + read_2_bytes (abfd, info_ptr))); |
c906108c SS |
20606 | info_ptr += 2; |
20607 | break; | |
20608 | case DW_FORM_ref4: | |
7c290a04 | 20609 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20610 | + read_4_bytes (abfd, info_ptr))); |
c906108c SS |
20611 | info_ptr += 4; |
20612 | break; | |
613e1657 | 20613 | case DW_FORM_ref8: |
7c290a04 | 20614 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20615 | + read_8_bytes (abfd, info_ptr))); |
613e1657 KB |
20616 | info_ptr += 8; |
20617 | break; | |
55f1336d | 20618 | case DW_FORM_ref_sig8: |
630ed6b9 | 20619 | attr->set_signature (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
20620 | info_ptr += 8; |
20621 | break; | |
c906108c | 20622 | case DW_FORM_ref_udata: |
7c290a04 | 20623 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 TT |
20624 | + read_unsigned_leb128 (abfd, info_ptr, |
20625 | &bytes_read))); | |
c906108c SS |
20626 | info_ptr += bytes_read; |
20627 | break; | |
c906108c | 20628 | case DW_FORM_indirect: |
a8329558 KW |
20629 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20630 | info_ptr += bytes_read; | |
43988095 JK |
20631 | if (form == DW_FORM_implicit_const) |
20632 | { | |
20633 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
20634 | info_ptr += bytes_read; | |
20635 | } | |
20636 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
7a5f294d | 20637 | info_ptr); |
43988095 JK |
20638 | break; |
20639 | case DW_FORM_implicit_const: | |
1bc397c5 | 20640 | attr->set_signed (implicit_const); |
a8329558 | 20641 | break; |
336d760d | 20642 | case DW_FORM_addrx: |
3019eac3 | 20643 | case DW_FORM_GNU_addr_index: |
fe56917a TT |
20644 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20645 | &bytes_read)); | |
3019eac3 DE |
20646 | info_ptr += bytes_read; |
20647 | break; | |
cf532bd1 | 20648 | case DW_FORM_strx: |
15f18d14 AT |
20649 | case DW_FORM_strx1: |
20650 | case DW_FORM_strx2: | |
20651 | case DW_FORM_strx3: | |
20652 | case DW_FORM_strx4: | |
3019eac3 | 20653 | case DW_FORM_GNU_str_index: |
3019eac3 | 20654 | { |
15f18d14 AT |
20655 | ULONGEST str_index; |
20656 | if (form == DW_FORM_strx1) | |
20657 | { | |
20658 | str_index = read_1_byte (abfd, info_ptr); | |
20659 | info_ptr += 1; | |
20660 | } | |
20661 | else if (form == DW_FORM_strx2) | |
20662 | { | |
20663 | str_index = read_2_bytes (abfd, info_ptr); | |
20664 | info_ptr += 2; | |
20665 | } | |
20666 | else if (form == DW_FORM_strx3) | |
20667 | { | |
20668 | str_index = read_3_bytes (abfd, info_ptr); | |
20669 | info_ptr += 3; | |
20670 | } | |
20671 | else if (form == DW_FORM_strx4) | |
20672 | { | |
20673 | str_index = read_4_bytes (abfd, info_ptr); | |
20674 | info_ptr += 4; | |
20675 | } | |
20676 | else | |
20677 | { | |
20678 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
20679 | info_ptr += bytes_read; | |
20680 | } | |
fe56917a | 20681 | attr->set_unsigned_reprocess (str_index); |
7a5f294d | 20682 | } |
3019eac3 | 20683 | break; |
c906108c | 20684 | default: |
8a3fe4f8 | 20685 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
20686 | dwarf_form_name (form), |
20687 | bfd_get_filename (abfd)); | |
c906108c | 20688 | } |
28e94949 | 20689 | |
36586728 | 20690 | /* Super hack. */ |
cd6c91b4 | 20691 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
20692 | attr->form = DW_FORM_GNU_ref_alt; |
20693 | ||
28e94949 JB |
20694 | /* We have seen instances where the compiler tried to emit a byte |
20695 | size attribute of -1 which ended up being encoded as an unsigned | |
20696 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
20697 | an object of this size seems pretty unlikely so we can relatively | |
20698 | safely treat these cases as if the size attribute was invalid and | |
20699 | treat them as zero by default. */ | |
20700 | if (attr->name == DW_AT_byte_size | |
20701 | && form == DW_FORM_data4 | |
529908cb | 20702 | && attr->as_unsigned () >= 0xffffffff) |
01c66ae6 JB |
20703 | { |
20704 | complaint | |
dda83cd7 SM |
20705 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
20706 | hex_string (attr->as_unsigned ())); | |
414ad644 | 20707 | attr->set_unsigned (0); |
01c66ae6 | 20708 | } |
28e94949 | 20709 | |
c906108c SS |
20710 | return info_ptr; |
20711 | } | |
20712 | ||
a8329558 KW |
20713 | /* Read an attribute described by an abbreviated attribute. */ |
20714 | ||
d521ce57 | 20715 | static const gdb_byte * |
dee91e82 | 20716 | read_attribute (const struct die_reader_specs *reader, |
4444f407 | 20717 | struct attribute *attr, const struct attr_abbrev *abbrev, |
7a5f294d | 20718 | const gdb_byte *info_ptr) |
a8329558 KW |
20719 | { |
20720 | attr->name = abbrev->name; | |
c6481205 | 20721 | attr->string_is_canonical = 0; |
fe56917a | 20722 | attr->requires_reprocessing = 0; |
43988095 | 20723 | return read_attribute_value (reader, attr, abbrev->form, |
7a5f294d | 20724 | abbrev->implicit_const, info_ptr); |
a8329558 KW |
20725 | } |
20726 | ||
43988095 JK |
20727 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
20728 | ||
20729 | static const char * | |
976ca316 | 20730 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 20731 | LONGEST str_offset) |
43988095 | 20732 | { |
976ca316 SM |
20733 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
20734 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
20735 | } |
20736 | ||
43988095 JK |
20737 | /* Return pointer to string at .debug_str offset as read from BUF. |
20738 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
20739 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
20740 | ||
d521ce57 | 20741 | static const char * |
976ca316 | 20742 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 20743 | const gdb_byte *buf, |
cf2c3c16 TT |
20744 | const struct comp_unit_head *cu_header, |
20745 | unsigned int *bytes_read_ptr) | |
20746 | { | |
8266302d | 20747 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 20748 | |
976ca316 | 20749 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
20750 | } |
20751 | ||
86c0bb4c | 20752 | /* See read.h. */ |
43988095 | 20753 | |
86c0bb4c TT |
20754 | const char * |
20755 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
20756 | const struct comp_unit_head *cu_header, |
20757 | unsigned int *bytes_read_ptr) | |
43988095 | 20758 | { |
86c0bb4c | 20759 | bfd *abfd = objfile->obfd; |
8266302d | 20760 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 20761 | |
5989a64e | 20762 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
20763 | } |
20764 | ||
3019eac3 | 20765 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 20766 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
20767 | ADDR_SIZE is the size of addresses from the CU header. */ |
20768 | ||
20769 | static CORE_ADDR | |
976ca316 SM |
20770 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
20771 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 20772 | { |
976ca316 | 20773 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
20774 | bfd *abfd = objfile->obfd; |
20775 | const gdb_byte *info_ptr; | |
18a8505e | 20776 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 20777 | |
976ca316 SM |
20778 | per_objfile->per_bfd->addr.read (objfile); |
20779 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 20780 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 20781 | objfile_name (objfile)); |
18a8505e | 20782 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 20783 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
20784 | error (_("DW_FORM_addr_index pointing outside of " |
20785 | ".debug_addr section [in module %s]"), | |
4262abfb | 20786 | objfile_name (objfile)); |
976ca316 SM |
20787 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
20788 | + addr_index * addr_size); | |
3019eac3 DE |
20789 | if (addr_size == 4) |
20790 | return bfd_get_32 (abfd, info_ptr); | |
20791 | else | |
20792 | return bfd_get_64 (abfd, info_ptr); | |
20793 | } | |
20794 | ||
20795 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20796 | ||
20797 | static CORE_ADDR | |
20798 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20799 | { | |
5e22e966 | 20800 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 20801 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
20802 | } |
20803 | ||
20804 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20805 | ||
20806 | static CORE_ADDR | |
d521ce57 | 20807 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20808 | unsigned int *bytes_read) |
20809 | { | |
5e22e966 | 20810 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
20811 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20812 | ||
20813 | return read_addr_index (cu, addr_index); | |
20814 | } | |
20815 | ||
450a1bfc | 20816 | /* See read.h. */ |
3019eac3 DE |
20817 | |
20818 | CORE_ADDR | |
82ca3f51 | 20819 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 20820 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 20821 | unsigned int addr_index) |
3019eac3 | 20822 | { |
976ca316 | 20823 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 20824 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20825 | int addr_size; |
20826 | ||
3019eac3 DE |
20827 | /* We need addr_base and addr_size. |
20828 | If we don't have PER_CU->cu, we have to get it. | |
20829 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20830 | which at this point doesn't seem justified: it's not clear how frequently | |
20831 | it would get used and it would increase the size of every PER_CU. | |
20832 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20833 | so we're not in uncharted territory here. | |
20834 | Alas we need to be a bit more complicated as addr_base is contained | |
20835 | in the DIE. | |
20836 | ||
20837 | We don't need to read the entire CU(/TU). | |
20838 | We just need the header and top level die. | |
a1b64ce1 | 20839 | |
3019eac3 | 20840 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20841 | For now we skip this optimization. */ |
3019eac3 DE |
20842 | |
20843 | if (cu != NULL) | |
20844 | { | |
20845 | addr_base = cu->addr_base; | |
20846 | addr_size = cu->header.addr_size; | |
20847 | } | |
20848 | else | |
20849 | { | |
976ca316 | 20850 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
20851 | addr_base = reader.cu->addr_base; |
20852 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20853 | } |
20854 | ||
976ca316 | 20855 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
20856 | } |
20857 | ||
18a8505e AT |
20858 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20859 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20860 | DWO file. */ | |
3019eac3 | 20861 | |
d521ce57 | 20862 | static const char * |
18a8505e AT |
20863 | read_str_index (struct dwarf2_cu *cu, |
20864 | struct dwarf2_section_info *str_section, | |
20865 | struct dwarf2_section_info *str_offsets_section, | |
20866 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20867 | { |
976ca316 SM |
20868 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20869 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 20870 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20871 | bfd *abfd = objfile->obfd; |
d521ce57 | 20872 | const gdb_byte *info_ptr; |
3019eac3 | 20873 | ULONGEST str_offset; |
cf532bd1 | 20874 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20875 | |
96b79293 TT |
20876 | str_section->read (objfile); |
20877 | str_offsets_section->read (objfile); | |
73869dc2 | 20878 | if (str_section->buffer == NULL) |
18a8505e | 20879 | error (_("%s used without %s section" |
9d8780f0 | 20880 | " in CU at offset %s [in module %s]"), |
96b79293 | 20881 | form_name, str_section->get_name (), |
dda83cd7 | 20882 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20883 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20884 | error (_("%s used without %s section" |
9d8780f0 | 20885 | " in CU at offset %s [in module %s]"), |
96b79293 | 20886 | form_name, str_section->get_name (), |
dda83cd7 | 20887 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20888 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20889 | + str_offsets_base |
3019eac3 DE |
20890 | + str_index * cu->header.offset_size); |
20891 | if (cu->header.offset_size == 4) | |
20892 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20893 | else | |
20894 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20895 | if (str_offset >= str_section->size) |
57d63ce2 | 20896 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20897 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20898 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20899 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20900 | } |
20901 | ||
18a8505e AT |
20902 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20903 | ||
20904 | static const char * | |
20905 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20906 | { | |
20907 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20908 | ? reader->cu->header.addr_size : 0; | |
20909 | return read_str_index (reader->cu, | |
20910 | &reader->dwo_file->sections.str, | |
20911 | &reader->dwo_file->sections.str_offsets, | |
20912 | str_offsets_base, str_index); | |
20913 | } | |
20914 | ||
20915 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20916 | ||
20917 | static const char * | |
20918 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20919 | { | |
5e22e966 | 20920 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
20921 | const char *objf_name = objfile_name (objfile); |
20922 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20923 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20924 | ||
20925 | if (!cu->str_offsets_base.has_value ()) | |
20926 | error (_("%s used in Fission stub without %s" | |
20927 | " in CU at offset 0x%lx [in module %s]"), | |
20928 | form_name, str_offsets_attr_name, | |
20929 | (long) cu->header.offset_size, objf_name); | |
20930 | ||
20931 | return read_str_index (cu, | |
5e22e966 SM |
20932 | &cu->per_objfile->per_bfd->str, |
20933 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
20934 | *cu->str_offsets_base, str_index); |
20935 | } | |
20936 | ||
3019eac3 DE |
20937 | /* Return the length of an LEB128 number in BUF. */ |
20938 | ||
20939 | static int | |
20940 | leb128_size (const gdb_byte *buf) | |
20941 | { | |
20942 | const gdb_byte *begin = buf; | |
20943 | gdb_byte byte; | |
20944 | ||
20945 | while (1) | |
20946 | { | |
20947 | byte = *buf++; | |
20948 | if ((byte & 128) == 0) | |
20949 | return buf - begin; | |
20950 | } | |
20951 | } | |
20952 | ||
c906108c | 20953 | static void |
e142c38c | 20954 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20955 | { |
20956 | switch (lang) | |
20957 | { | |
20958 | case DW_LANG_C89: | |
76bee0cc | 20959 | case DW_LANG_C99: |
0cfd832f | 20960 | case DW_LANG_C11: |
c906108c | 20961 | case DW_LANG_C: |
d1be3247 | 20962 | case DW_LANG_UPC: |
e142c38c | 20963 | cu->language = language_c; |
c906108c | 20964 | break; |
9c37b5ae | 20965 | case DW_LANG_Java: |
c906108c | 20966 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20967 | case DW_LANG_C_plus_plus_11: |
20968 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20969 | cu->language = language_cplus; |
c906108c | 20970 | break; |
6aecb9c2 JB |
20971 | case DW_LANG_D: |
20972 | cu->language = language_d; | |
20973 | break; | |
c906108c SS |
20974 | case DW_LANG_Fortran77: |
20975 | case DW_LANG_Fortran90: | |
b21b22e0 | 20976 | case DW_LANG_Fortran95: |
f7de9aab MW |
20977 | case DW_LANG_Fortran03: |
20978 | case DW_LANG_Fortran08: | |
e142c38c | 20979 | cu->language = language_fortran; |
c906108c | 20980 | break; |
a766d390 DE |
20981 | case DW_LANG_Go: |
20982 | cu->language = language_go; | |
20983 | break; | |
c906108c | 20984 | case DW_LANG_Mips_Assembler: |
e142c38c | 20985 | cu->language = language_asm; |
c906108c SS |
20986 | break; |
20987 | case DW_LANG_Ada83: | |
8aaf0b47 | 20988 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20989 | cu->language = language_ada; |
20990 | break; | |
72019c9c GM |
20991 | case DW_LANG_Modula2: |
20992 | cu->language = language_m2; | |
20993 | break; | |
fe8e67fd PM |
20994 | case DW_LANG_Pascal83: |
20995 | cu->language = language_pascal; | |
20996 | break; | |
22566fbd DJ |
20997 | case DW_LANG_ObjC: |
20998 | cu->language = language_objc; | |
20999 | break; | |
c44af4eb TT |
21000 | case DW_LANG_Rust: |
21001 | case DW_LANG_Rust_old: | |
21002 | cu->language = language_rust; | |
21003 | break; | |
c906108c SS |
21004 | case DW_LANG_Cobol74: |
21005 | case DW_LANG_Cobol85: | |
c906108c | 21006 | default: |
e142c38c | 21007 | cu->language = language_minimal; |
c906108c SS |
21008 | break; |
21009 | } | |
e142c38c | 21010 | cu->language_defn = language_def (cu->language); |
c906108c SS |
21011 | } |
21012 | ||
21013 | /* Return the named attribute or NULL if not there. */ | |
21014 | ||
21015 | static struct attribute * | |
e142c38c | 21016 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 21017 | { |
a48e046c | 21018 | for (;;) |
c906108c | 21019 | { |
a48e046c TT |
21020 | unsigned int i; |
21021 | struct attribute *spec = NULL; | |
21022 | ||
21023 | for (i = 0; i < die->num_attrs; ++i) | |
21024 | { | |
21025 | if (die->attrs[i].name == name) | |
21026 | return &die->attrs[i]; | |
21027 | if (die->attrs[i].name == DW_AT_specification | |
21028 | || die->attrs[i].name == DW_AT_abstract_origin) | |
21029 | spec = &die->attrs[i]; | |
21030 | } | |
21031 | ||
21032 | if (!spec) | |
21033 | break; | |
c906108c | 21034 | |
f2f0e013 | 21035 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 21036 | } |
c5aa993b | 21037 | |
c906108c SS |
21038 | return NULL; |
21039 | } | |
21040 | ||
7d45c7c3 KB |
21041 | /* Return the string associated with a string-typed attribute, or NULL if it |
21042 | is either not found or is of an incorrect type. */ | |
21043 | ||
21044 | static const char * | |
21045 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
21046 | { | |
21047 | struct attribute *attr; | |
21048 | const char *str = NULL; | |
21049 | ||
21050 | attr = dwarf2_attr (die, name, cu); | |
21051 | ||
21052 | if (attr != NULL) | |
21053 | { | |
95f982e5 | 21054 | str = attr->as_string (); |
e61108c9 | 21055 | if (str == nullptr) |
dda83cd7 | 21056 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
21057 | "DIE at %s in module %s"), |
21058 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 21059 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
21060 | } |
21061 | ||
21062 | return str; | |
21063 | } | |
21064 | ||
a084a2a6 | 21065 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 21066 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
21067 | static const char * |
21068 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
21069 | { | |
21070 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
21071 | if (dwo_name == nullptr) | |
21072 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
21073 | return dwo_name; | |
21074 | } | |
21075 | ||
05cf31d1 JB |
21076 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
21077 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 21078 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
21079 | |
21080 | static int | |
21081 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
21082 | { | |
21083 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
21084 | ||
c45bc3f8 | 21085 | return attr != nullptr && attr->as_boolean (); |
05cf31d1 JB |
21086 | } |
21087 | ||
3ca72b44 | 21088 | static int |
e142c38c | 21089 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 21090 | { |
05cf31d1 JB |
21091 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
21092 | which value is non-zero. However, we have to be careful with | |
21093 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
21094 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
21095 | end up accidently finding a declaration attribute that belongs | |
21096 | to a different DIE referenced by the specification attribute, | |
21097 | even though the given DIE does not have a declaration attribute. */ | |
21098 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
21099 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
21100 | } |
21101 | ||
63d06c5c | 21102 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 21103 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
21104 | containing the return value on output. If there is no |
21105 | specification, but there is an abstract origin, that is | |
21106 | returned. */ | |
63d06c5c DC |
21107 | |
21108 | static struct die_info * | |
f2f0e013 | 21109 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 21110 | { |
f2f0e013 DJ |
21111 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
21112 | *spec_cu); | |
63d06c5c | 21113 | |
edb3359d DJ |
21114 | if (spec_attr == NULL) |
21115 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
21116 | ||
63d06c5c DC |
21117 | if (spec_attr == NULL) |
21118 | return NULL; | |
21119 | else | |
f2f0e013 | 21120 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 21121 | } |
c906108c | 21122 | |
527f3840 JK |
21123 | /* Stub for free_line_header to match void * callback types. */ |
21124 | ||
21125 | static void | |
21126 | free_line_header_voidp (void *arg) | |
21127 | { | |
9a3c8263 | 21128 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 21129 | |
fff8551c | 21130 | delete lh; |
527f3840 JK |
21131 | } |
21132 | ||
83769d0b | 21133 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
21134 | |
21135 | static struct dwarf2_section_info * | |
21136 | get_debug_line_section (struct dwarf2_cu *cu) | |
21137 | { | |
21138 | struct dwarf2_section_info *section; | |
976ca316 | 21139 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
21140 | |
21141 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
21142 | DWO file. */ | |
21143 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
21144 | section = &cu->dwo_unit->dwo_file->sections.line; | |
21145 | else if (cu->per_cu->is_dwz) | |
21146 | { | |
a7308ce0 | 21147 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd, true); |
36586728 TT |
21148 | |
21149 | section = &dwz->line; | |
21150 | } | |
21151 | else | |
976ca316 | 21152 | section = &per_objfile->per_bfd->line; |
36586728 TT |
21153 | |
21154 | return section; | |
21155 | } | |
21156 | ||
debd256d | 21157 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 21158 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 21159 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
21160 | Returns NULL if there is a problem reading the header, e.g., if it |
21161 | has a version we don't understand. | |
debd256d JB |
21162 | |
21163 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
21164 | the returned object point into the dwarf line section buffer, |
21165 | and must not be freed. */ | |
ae2de4f8 | 21166 | |
fff8551c | 21167 | static line_header_up |
9c541725 | 21168 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 21169 | { |
3019eac3 | 21170 | struct dwarf2_section_info *section; |
976ca316 | 21171 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 21172 | |
36586728 | 21173 | section = get_debug_line_section (cu); |
976ca316 | 21174 | section->read (per_objfile->objfile); |
3019eac3 | 21175 | if (section->buffer == NULL) |
debd256d | 21176 | { |
3019eac3 | 21177 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 21178 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 21179 | else |
b98664d3 | 21180 | complaint (_("missing .debug_line section")); |
debd256d JB |
21181 | return 0; |
21182 | } | |
21183 | ||
0df7ad3a | 21184 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 21185 | per_objfile, section, &cu->header); |
debd256d | 21186 | } |
c906108c | 21187 | |
c6da4cef | 21188 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 21189 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 21190 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
21191 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
21192 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 21193 | |
d521ce57 | 21194 | static const char * |
7ba99d21 | 21195 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 21196 | const dwarf2_psymtab *pst, |
c89b44cd TT |
21197 | const char *comp_dir, |
21198 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 21199 | { |
d521ce57 TT |
21200 | const char *include_name = fe.name; |
21201 | const char *include_name_to_compare = include_name; | |
72b9f47f | 21202 | const char *pst_filename; |
c6da4cef DE |
21203 | int file_is_pst; |
21204 | ||
8c43009f | 21205 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 21206 | |
c89b44cd | 21207 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
21208 | if (!IS_ABSOLUTE_PATH (include_name) |
21209 | && (dir_name != NULL || comp_dir != NULL)) | |
21210 | { | |
21211 | /* Avoid creating a duplicate psymtab for PST. | |
21212 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
21213 | Before we do the comparison, however, we need to account | |
21214 | for DIR_NAME and COMP_DIR. | |
21215 | First prepend dir_name (if non-NULL). If we still don't | |
21216 | have an absolute path prepend comp_dir (if non-NULL). | |
21217 | However, the directory we record in the include-file's | |
21218 | psymtab does not contain COMP_DIR (to match the | |
21219 | corresponding symtab(s)). | |
21220 | ||
21221 | Example: | |
21222 | ||
21223 | bash$ cd /tmp | |
21224 | bash$ gcc -g ./hello.c | |
21225 | include_name = "hello.c" | |
21226 | dir_name = "." | |
21227 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
21228 | DW_AT_name = "./hello.c" |
21229 | ||
21230 | */ | |
c6da4cef DE |
21231 | |
21232 | if (dir_name != NULL) | |
21233 | { | |
c89b44cd TT |
21234 | name_holder->reset (concat (dir_name, SLASH_STRING, |
21235 | include_name, (char *) NULL)); | |
21236 | include_name = name_holder->get (); | |
c6da4cef | 21237 | include_name_to_compare = include_name; |
c6da4cef DE |
21238 | } |
21239 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
21240 | { | |
c89b44cd TT |
21241 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
21242 | include_name, (char *) NULL)); | |
21243 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
21244 | } |
21245 | } | |
21246 | ||
21247 | pst_filename = pst->filename; | |
c89b44cd | 21248 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
21249 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
21250 | { | |
c89b44cd TT |
21251 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
21252 | pst_filename, (char *) NULL)); | |
21253 | pst_filename = copied_name.get (); | |
c6da4cef DE |
21254 | } |
21255 | ||
1e3fad37 | 21256 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 21257 | |
c6da4cef DE |
21258 | if (file_is_pst) |
21259 | return NULL; | |
21260 | return include_name; | |
21261 | } | |
21262 | ||
d9b3de22 DE |
21263 | /* State machine to track the state of the line number program. */ |
21264 | ||
6f77053d | 21265 | class lnp_state_machine |
d9b3de22 | 21266 | { |
6f77053d PA |
21267 | public: |
21268 | /* Initialize a machine state for the start of a line number | |
21269 | program. */ | |
804d2729 TT |
21270 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
21271 | bool record_lines_p); | |
6f77053d | 21272 | |
8c43009f PA |
21273 | file_entry *current_file () |
21274 | { | |
21275 | /* lh->file_names is 0-based, but the file name numbers in the | |
21276 | statement program are 1-based. */ | |
6f77053d PA |
21277 | return m_line_header->file_name_at (m_file); |
21278 | } | |
21279 | ||
21280 | /* Record the line in the state machine. END_SEQUENCE is true if | |
21281 | we're processing the end of a sequence. */ | |
21282 | void record_line (bool end_sequence); | |
21283 | ||
a8caed5d | 21284 | /* Check ADDRESS is -1, or zero and less than UNRELOCATED_LOWPC, and if true |
7ab6656f | 21285 | nop-out rest of the lines in this sequence. */ |
6f77053d PA |
21286 | void check_line_address (struct dwarf2_cu *cu, |
21287 | const gdb_byte *line_ptr, | |
7ab6656f | 21288 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
21289 | |
21290 | void handle_set_discriminator (unsigned int discriminator) | |
21291 | { | |
21292 | m_discriminator = discriminator; | |
21293 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
21294 | } | |
21295 | ||
21296 | /* Handle DW_LNE_set_address. */ | |
21297 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
21298 | { | |
21299 | m_op_index = 0; | |
21300 | address += baseaddr; | |
21301 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
21302 | } | |
21303 | ||
21304 | /* Handle DW_LNS_advance_pc. */ | |
21305 | void handle_advance_pc (CORE_ADDR adjust); | |
21306 | ||
21307 | /* Handle a special opcode. */ | |
21308 | void handle_special_opcode (unsigned char op_code); | |
21309 | ||
21310 | /* Handle DW_LNS_advance_line. */ | |
21311 | void handle_advance_line (int line_delta) | |
21312 | { | |
21313 | advance_line (line_delta); | |
21314 | } | |
21315 | ||
21316 | /* Handle DW_LNS_set_file. */ | |
21317 | void handle_set_file (file_name_index file); | |
21318 | ||
21319 | /* Handle DW_LNS_negate_stmt. */ | |
21320 | void handle_negate_stmt () | |
21321 | { | |
21322 | m_is_stmt = !m_is_stmt; | |
21323 | } | |
21324 | ||
21325 | /* Handle DW_LNS_const_add_pc. */ | |
21326 | void handle_const_add_pc (); | |
21327 | ||
21328 | /* Handle DW_LNS_fixed_advance_pc. */ | |
21329 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
21330 | { | |
21331 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21332 | m_op_index = 0; | |
21333 | } | |
21334 | ||
21335 | /* Handle DW_LNS_copy. */ | |
21336 | void handle_copy () | |
21337 | { | |
21338 | record_line (false); | |
21339 | m_discriminator = 0; | |
21340 | } | |
21341 | ||
21342 | /* Handle DW_LNE_end_sequence. */ | |
21343 | void handle_end_sequence () | |
21344 | { | |
804d2729 | 21345 | m_currently_recording_lines = true; |
6f77053d PA |
21346 | } |
21347 | ||
21348 | private: | |
21349 | /* Advance the line by LINE_DELTA. */ | |
21350 | void advance_line (int line_delta) | |
21351 | { | |
21352 | m_line += line_delta; | |
21353 | ||
21354 | if (line_delta != 0) | |
21355 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
21356 | } |
21357 | ||
804d2729 TT |
21358 | struct dwarf2_cu *m_cu; |
21359 | ||
6f77053d PA |
21360 | gdbarch *m_gdbarch; |
21361 | ||
21362 | /* True if we're recording lines. | |
21363 | Otherwise we're building partial symtabs and are just interested in | |
21364 | finding include files mentioned by the line number program. */ | |
21365 | bool m_record_lines_p; | |
21366 | ||
8c43009f | 21367 | /* The line number header. */ |
6f77053d | 21368 | line_header *m_line_header; |
8c43009f | 21369 | |
6f77053d PA |
21370 | /* These are part of the standard DWARF line number state machine, |
21371 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 21372 | |
6f77053d | 21373 | unsigned char m_op_index = 0; |
7ba99d21 AT |
21374 | /* The line table index of the current file. */ |
21375 | file_name_index m_file = 1; | |
6f77053d PA |
21376 | unsigned int m_line = 1; |
21377 | ||
21378 | /* These are initialized in the constructor. */ | |
21379 | ||
21380 | CORE_ADDR m_address; | |
21381 | bool m_is_stmt; | |
21382 | unsigned int m_discriminator; | |
d9b3de22 DE |
21383 | |
21384 | /* Additional bits of state we need to track. */ | |
21385 | ||
21386 | /* The last file that we called dwarf2_start_subfile for. | |
21387 | This is only used for TLLs. */ | |
6f77053d | 21388 | unsigned int m_last_file = 0; |
d9b3de22 | 21389 | /* The last file a line number was recorded for. */ |
6f77053d | 21390 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 21391 | |
1313c56e AB |
21392 | /* The address of the last line entry. */ |
21393 | CORE_ADDR m_last_address; | |
21394 | ||
21395 | /* Set to true when a previous line at the same address (using | |
21396 | m_last_address) had m_is_stmt true. This is reset to false when a | |
21397 | line entry at a new address (m_address different to m_last_address) is | |
21398 | processed. */ | |
21399 | bool m_stmt_at_address = false; | |
21400 | ||
804d2729 TT |
21401 | /* When true, record the lines we decode. */ |
21402 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
21403 | |
21404 | /* The last line number that was recorded, used to coalesce | |
21405 | consecutive entries for the same line. This can happen, for | |
21406 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
21407 | unsigned int m_last_line = 0; |
21408 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 21409 | }; |
d9b3de22 | 21410 | |
6f77053d PA |
21411 | void |
21412 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
21413 | { | |
21414 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
21415 | / m_line_header->maximum_ops_per_instruction) | |
21416 | * m_line_header->minimum_instruction_length); | |
21417 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21418 | m_op_index = ((m_op_index + adjust) | |
21419 | % m_line_header->maximum_ops_per_instruction); | |
21420 | } | |
d9b3de22 | 21421 | |
6f77053d PA |
21422 | void |
21423 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 21424 | { |
6f77053d | 21425 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
21426 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
21427 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
21428 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
21429 | / m_line_header->maximum_ops_per_instruction) |
21430 | * m_line_header->minimum_instruction_length); | |
21431 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 21432 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 21433 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 21434 | |
258bf0ee | 21435 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
21436 | advance_line (line_delta); |
21437 | record_line (false); | |
21438 | m_discriminator = 0; | |
21439 | } | |
d9b3de22 | 21440 | |
6f77053d PA |
21441 | void |
21442 | lnp_state_machine::handle_set_file (file_name_index file) | |
21443 | { | |
21444 | m_file = file; | |
21445 | ||
21446 | const file_entry *fe = current_file (); | |
21447 | if (fe == NULL) | |
21448 | dwarf2_debug_line_missing_file_complaint (); | |
21449 | else if (m_record_lines_p) | |
21450 | { | |
21451 | const char *dir = fe->include_dir (m_line_header); | |
21452 | ||
c24bdb02 | 21453 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21454 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 21455 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
21456 | } |
21457 | } | |
21458 | ||
21459 | void | |
21460 | lnp_state_machine::handle_const_add_pc () | |
21461 | { | |
21462 | CORE_ADDR adjust | |
21463 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21464 | ||
21465 | CORE_ADDR addr_adj | |
21466 | = (((m_op_index + adjust) | |
21467 | / m_line_header->maximum_ops_per_instruction) | |
21468 | * m_line_header->minimum_instruction_length); | |
21469 | ||
21470 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21471 | m_op_index = ((m_op_index + adjust) | |
21472 | % m_line_header->maximum_ops_per_instruction); | |
21473 | } | |
d9b3de22 | 21474 | |
a05a36a5 DE |
21475 | /* Return non-zero if we should add LINE to the line number table. |
21476 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21477 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21478 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21479 | had a non-zero discriminator. | |
21480 | ||
21481 | We have to be careful in the presence of discriminators. | |
21482 | E.g., for this line: | |
21483 | ||
21484 | for (i = 0; i < 100000; i++); | |
21485 | ||
21486 | clang can emit four line number entries for that one line, | |
21487 | each with a different discriminator. | |
21488 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21489 | ||
21490 | However, we want gdb to coalesce all four entries into one. | |
21491 | Otherwise the user could stepi into the middle of the line and | |
21492 | gdb would get confused about whether the pc really was in the | |
21493 | middle of the line. | |
21494 | ||
21495 | Things are further complicated by the fact that two consecutive | |
21496 | line number entries for the same line is a heuristic used by gcc | |
21497 | to denote the end of the prologue. So we can't just discard duplicate | |
21498 | entries, we have to be selective about it. The heuristic we use is | |
21499 | that we only collapse consecutive entries for the same line if at least | |
21500 | one of those entries has a non-zero discriminator. PR 17276. | |
21501 | ||
21502 | Note: Addresses in the line number state machine can never go backwards | |
21503 | within one sequence, thus this coalescing is ok. */ | |
21504 | ||
21505 | static int | |
804d2729 TT |
21506 | dwarf_record_line_p (struct dwarf2_cu *cu, |
21507 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
21508 | int line_has_non_zero_discriminator, |
21509 | struct subfile *last_subfile) | |
21510 | { | |
c24bdb02 | 21511 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
21512 | return 1; |
21513 | if (line != last_line) | |
21514 | return 1; | |
21515 | /* Same line for the same file that we've seen already. | |
21516 | As a last check, for pr 17276, only record the line if the line | |
21517 | has never had a non-zero discriminator. */ | |
21518 | if (!line_has_non_zero_discriminator) | |
21519 | return 1; | |
21520 | return 0; | |
21521 | } | |
21522 | ||
804d2729 TT |
21523 | /* Use the CU's builder to record line number LINE beginning at |
21524 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
21525 | |
21526 | static void | |
d9b3de22 | 21527 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 21528 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 21529 | struct dwarf2_cu *cu) |
252a6764 DE |
21530 | { |
21531 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21532 | ||
27e0867f DE |
21533 | if (dwarf_line_debug) |
21534 | { | |
21535 | fprintf_unfiltered (gdb_stdlog, | |
21536 | "Recording line %u, file %s, address %s\n", | |
21537 | line, lbasename (subfile->name), | |
21538 | paddress (gdbarch, address)); | |
21539 | } | |
21540 | ||
804d2729 | 21541 | if (cu != nullptr) |
8c95582d | 21542 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
21543 | } |
21544 | ||
21545 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21546 | Mark the end of a set of line number records. | |
d9b3de22 | 21547 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21548 | If SUBFILE is NULL the request is ignored. */ |
21549 | ||
21550 | static void | |
21551 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 21552 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 21553 | { |
27e0867f DE |
21554 | if (subfile == NULL) |
21555 | return; | |
21556 | ||
21557 | if (dwarf_line_debug) | |
21558 | { | |
21559 | fprintf_unfiltered (gdb_stdlog, | |
21560 | "Finishing current line, file %s, address %s\n", | |
21561 | lbasename (subfile->name), | |
21562 | paddress (gdbarch, address)); | |
21563 | } | |
21564 | ||
8c95582d | 21565 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
21566 | } |
21567 | ||
6f77053d PA |
21568 | void |
21569 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21570 | { |
d9b3de22 DE |
21571 | if (dwarf_line_debug) |
21572 | { | |
21573 | fprintf_unfiltered (gdb_stdlog, | |
21574 | "Processing actual line %u: file %u," | |
94a72be7 | 21575 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 21576 | m_line, m_file, |
6f77053d | 21577 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
21578 | m_is_stmt, m_discriminator, |
21579 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
21580 | } |
21581 | ||
6f77053d | 21582 | file_entry *fe = current_file (); |
8c43009f PA |
21583 | |
21584 | if (fe == NULL) | |
d9b3de22 DE |
21585 | dwarf2_debug_line_missing_file_complaint (); |
21586 | /* For now we ignore lines not starting on an instruction boundary. | |
21587 | But not when processing end_sequence for compatibility with the | |
21588 | previous version of the code. */ | |
6f77053d | 21589 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21590 | { |
8c43009f | 21591 | fe->included_p = 1; |
8c95582d | 21592 | if (m_record_lines_p) |
d9b3de22 | 21593 | { |
1313c56e AB |
21594 | /* When we switch files we insert an end maker in the first file, |
21595 | switch to the second file and add a new line entry. The | |
21596 | problem is that the end marker inserted in the first file will | |
21597 | discard any previous line entries at the same address. If the | |
21598 | line entries in the first file are marked as is-stmt, while | |
21599 | the new line in the second file is non-stmt, then this means | |
21600 | the end marker will discard is-stmt lines so we can have a | |
21601 | non-stmt line. This means that there are less addresses at | |
21602 | which the user can insert a breakpoint. | |
21603 | ||
21604 | To improve this we track the last address in m_last_address, | |
21605 | and whether we have seen an is-stmt at this address. Then | |
21606 | when switching files, if we have seen a stmt at the current | |
21607 | address, and we are switching to create a non-stmt line, then | |
21608 | discard the new line. */ | |
21609 | bool file_changed | |
21610 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
21611 | bool ignore_this_line | |
dda83cd7 SM |
21612 | = ((file_changed && !end_sequence && m_last_address == m_address |
21613 | && !m_is_stmt && m_stmt_at_address) | |
21614 | || (!end_sequence && m_line == 0)); | |
1313c56e AB |
21615 | |
21616 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 21617 | { |
804d2729 TT |
21618 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21619 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21620 | } |
21621 | ||
1313c56e | 21622 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 21623 | { |
8c95582d AB |
21624 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
21625 | ||
804d2729 | 21626 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21627 | m_line_has_non_zero_discriminator, |
21628 | m_last_subfile)) | |
d9b3de22 | 21629 | { |
c24bdb02 | 21630 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21631 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21632 | builder->get_current_subfile (), |
8c95582d | 21633 | m_line, m_address, is_stmt, |
804d2729 | 21634 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21635 | } |
c24bdb02 | 21636 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21637 | m_last_line = m_line; |
d9b3de22 DE |
21638 | } |
21639 | } | |
21640 | } | |
1313c56e AB |
21641 | |
21642 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
21643 | have multiple line table entries all at m_address. */ | |
21644 | if (m_last_address != m_address) | |
21645 | { | |
21646 | m_stmt_at_address = false; | |
21647 | m_last_address = m_address; | |
21648 | } | |
21649 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
21650 | } |
21651 | ||
804d2729 TT |
21652 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21653 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21654 | { |
804d2729 | 21655 | m_cu = cu; |
6f77053d PA |
21656 | m_gdbarch = arch; |
21657 | m_record_lines_p = record_lines_p; | |
21658 | m_line_header = lh; | |
d9b3de22 | 21659 | |
804d2729 | 21660 | m_currently_recording_lines = true; |
d9b3de22 | 21661 | |
d9b3de22 DE |
21662 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21663 | was a line entry for it so that the backend has a chance to adjust it | |
21664 | and also record it in case it needs it. This is currently used by MIPS | |
21665 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21666 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21667 | m_is_stmt = lh->default_is_stmt; | |
21668 | m_discriminator = 0; | |
1313c56e AB |
21669 | |
21670 | m_last_address = m_address; | |
21671 | m_stmt_at_address = false; | |
252a6764 DE |
21672 | } |
21673 | ||
6f77053d PA |
21674 | void |
21675 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21676 | const gdb_byte *line_ptr, | |
7ab6656f | 21677 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21678 | { |
a8caed5d FS |
21679 | /* Linkers resolve a symbolic relocation referencing a GC'd function to 0 or |
21680 | -1. If ADDRESS is 0, ignoring the opcode will err if the text section is | |
21681 | located at 0x0. In this case, additionally check that if | |
21682 | ADDRESS < UNRELOCATED_LOWPC. */ | |
924c2928 | 21683 | |
a8caed5d FS |
21684 | if ((address == 0 && address < unrelocated_lowpc) |
21685 | || address == (CORE_ADDR) -1) | |
924c2928 DE |
21686 | { |
21687 | /* This line table is for a function which has been | |
21688 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21689 | ||
5e22e966 | 21690 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
21691 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21692 | ||
b98664d3 | 21693 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21694 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21695 | m_currently_recording_lines = false; |
21696 | /* Note: m_currently_recording_lines is left as false until we see | |
21697 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21698 | } |
21699 | } | |
21700 | ||
f3f5162e | 21701 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21702 | Process the line number information in LH. |
21703 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21704 | program in order to set included_p for every referenced header. */ | |
debd256d | 21705 | |
c906108c | 21706 | static void |
43f3e411 DE |
21707 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21708 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21709 | { |
d521ce57 TT |
21710 | const gdb_byte *line_ptr, *extended_end; |
21711 | const gdb_byte *line_end; | |
a8c50c1f | 21712 | unsigned int bytes_read, extended_len; |
699ca60a | 21713 | unsigned char op_code, extended_op; |
e142c38c | 21714 | CORE_ADDR baseaddr; |
5e22e966 | 21715 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21716 | bfd *abfd = objfile->obfd; |
08feed99 | 21717 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
21718 | /* True if we're recording line info (as opposed to building partial |
21719 | symtabs and just interested in finding include files mentioned by | |
21720 | the line number program). */ | |
21721 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 21722 | |
b3b3bada | 21723 | baseaddr = objfile->text_section_offset (); |
c906108c | 21724 | |
debd256d JB |
21725 | line_ptr = lh->statement_program_start; |
21726 | line_end = lh->statement_program_end; | |
c906108c SS |
21727 | |
21728 | /* Read the statement sequences until there's nothing left. */ | |
21729 | while (line_ptr < line_end) | |
21730 | { | |
6f77053d PA |
21731 | /* The DWARF line number program state machine. Reset the state |
21732 | machine at the start of each sequence. */ | |
804d2729 | 21733 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21734 | bool end_sequence = false; |
d9b3de22 | 21735 | |
8c43009f | 21736 | if (record_lines_p) |
c906108c | 21737 | { |
8c43009f PA |
21738 | /* Start a subfile for the current file of the state |
21739 | machine. */ | |
21740 | const file_entry *fe = state_machine.current_file (); | |
21741 | ||
21742 | if (fe != NULL) | |
804d2729 | 21743 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21744 | } |
21745 | ||
a738430d | 21746 | /* Decode the table. */ |
d9b3de22 | 21747 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21748 | { |
21749 | op_code = read_1_byte (abfd, line_ptr); | |
21750 | line_ptr += 1; | |
9aa1fe7e | 21751 | |
debd256d | 21752 | if (op_code >= lh->opcode_base) |
6e70227d | 21753 | { |
8e07a239 | 21754 | /* Special opcode. */ |
6f77053d | 21755 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21756 | } |
21757 | else switch (op_code) | |
c906108c SS |
21758 | { |
21759 | case DW_LNS_extended_op: | |
3e43a32a MS |
21760 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21761 | &bytes_read); | |
473b7be6 | 21762 | line_ptr += bytes_read; |
a8c50c1f | 21763 | extended_end = line_ptr + extended_len; |
c906108c SS |
21764 | extended_op = read_1_byte (abfd, line_ptr); |
21765 | line_ptr += 1; | |
8f34b746 TV |
21766 | if (DW_LNE_lo_user <= extended_op |
21767 | && extended_op <= DW_LNE_hi_user) | |
21768 | { | |
21769 | /* Vendor extension, ignore. */ | |
21770 | line_ptr = extended_end; | |
21771 | break; | |
21772 | } | |
c906108c SS |
21773 | switch (extended_op) |
21774 | { | |
21775 | case DW_LNE_end_sequence: | |
6f77053d PA |
21776 | state_machine.handle_end_sequence (); |
21777 | end_sequence = true; | |
c906108c SS |
21778 | break; |
21779 | case DW_LNE_set_address: | |
d9b3de22 DE |
21780 | { |
21781 | CORE_ADDR address | |
c8a7a66f | 21782 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 21783 | line_ptr += bytes_read; |
6f77053d PA |
21784 | |
21785 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21786 | lowpc - baseaddr, address); |
6f77053d | 21787 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21788 | } |
c906108c SS |
21789 | break; |
21790 | case DW_LNE_define_file: | |
dda83cd7 SM |
21791 | { |
21792 | const char *cur_file; | |
ecfb656c PA |
21793 | unsigned int mod_time, length; |
21794 | dir_index dindex; | |
6e70227d | 21795 | |
dda83cd7 | 21796 | cur_file = read_direct_string (abfd, line_ptr, |
3e43a32a | 21797 | &bytes_read); |
dda83cd7 SM |
21798 | line_ptr += bytes_read; |
21799 | dindex = (dir_index) | |
21800 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21801 | line_ptr += bytes_read; | |
21802 | mod_time = | |
21803 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21804 | line_ptr += bytes_read; | |
21805 | length = | |
21806 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21807 | line_ptr += bytes_read; | |
21808 | lh->add_file_name (cur_file, dindex, mod_time, length); | |
21809 | } | |
c906108c | 21810 | break; |
d0c6ba3d | 21811 | case DW_LNE_set_discriminator: |
6f77053d PA |
21812 | { |
21813 | /* The discriminator is not interesting to the | |
21814 | debugger; just ignore it. We still need to | |
21815 | check its value though: | |
21816 | if there are consecutive entries for the same | |
21817 | (non-prologue) line we want to coalesce them. | |
21818 | PR 17276. */ | |
21819 | unsigned int discr | |
21820 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21821 | line_ptr += bytes_read; | |
21822 | ||
21823 | state_machine.handle_set_discriminator (discr); | |
21824 | } | |
d0c6ba3d | 21825 | break; |
c906108c | 21826 | default: |
b98664d3 | 21827 | complaint (_("mangled .debug_line section")); |
debd256d | 21828 | return; |
c906108c | 21829 | } |
a8c50c1f DJ |
21830 | /* Make sure that we parsed the extended op correctly. If e.g. |
21831 | we expected a different address size than the producer used, | |
21832 | we may have read the wrong number of bytes. */ | |
21833 | if (line_ptr != extended_end) | |
21834 | { | |
b98664d3 | 21835 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21836 | return; |
21837 | } | |
c906108c SS |
21838 | break; |
21839 | case DW_LNS_copy: | |
6f77053d | 21840 | state_machine.handle_copy (); |
c906108c SS |
21841 | break; |
21842 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21843 | { |
21844 | CORE_ADDR adjust | |
21845 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21846 | line_ptr += bytes_read; |
6f77053d PA |
21847 | |
21848 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21849 | } |
c906108c SS |
21850 | break; |
21851 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21852 | { |
21853 | int line_delta | |
21854 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21855 | line_ptr += bytes_read; |
6f77053d PA |
21856 | |
21857 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21858 | } |
c906108c SS |
21859 | break; |
21860 | case DW_LNS_set_file: | |
d9b3de22 | 21861 | { |
6f77053d | 21862 | file_name_index file |
ecfb656c PA |
21863 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21864 | &bytes_read); | |
d9b3de22 | 21865 | line_ptr += bytes_read; |
8c43009f | 21866 | |
6f77053d | 21867 | state_machine.handle_set_file (file); |
d9b3de22 | 21868 | } |
c906108c SS |
21869 | break; |
21870 | case DW_LNS_set_column: | |
0ad93d4f | 21871 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21872 | line_ptr += bytes_read; |
21873 | break; | |
21874 | case DW_LNS_negate_stmt: | |
6f77053d | 21875 | state_machine.handle_negate_stmt (); |
c906108c SS |
21876 | break; |
21877 | case DW_LNS_set_basic_block: | |
c906108c | 21878 | break; |
c2c6d25f JM |
21879 | /* Add to the address register of the state machine the |
21880 | address increment value corresponding to special opcode | |
a738430d MK |
21881 | 255. I.e., this value is scaled by the minimum |
21882 | instruction length since special opcode 255 would have | |
b021a221 | 21883 | scaled the increment. */ |
c906108c | 21884 | case DW_LNS_const_add_pc: |
6f77053d | 21885 | state_machine.handle_const_add_pc (); |
c906108c SS |
21886 | break; |
21887 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21888 | { |
6f77053d | 21889 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21890 | line_ptr += 2; |
6f77053d PA |
21891 | |
21892 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21893 | } |
c906108c | 21894 | break; |
9aa1fe7e | 21895 | default: |
a738430d MK |
21896 | { |
21897 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21898 | int i; |
a738430d | 21899 | |
debd256d | 21900 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21901 | { |
21902 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21903 | line_ptr += bytes_read; | |
21904 | } | |
21905 | } | |
c906108c SS |
21906 | } |
21907 | } | |
d9b3de22 DE |
21908 | |
21909 | if (!end_sequence) | |
21910 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21911 | ||
21912 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21913 | in which case we still finish recording the last line). */ | |
6f77053d | 21914 | state_machine.record_line (true); |
c906108c | 21915 | } |
f3f5162e DE |
21916 | } |
21917 | ||
21918 | /* Decode the Line Number Program (LNP) for the given line_header | |
21919 | structure and CU. The actual information extracted and the type | |
21920 | of structures created from the LNP depends on the value of PST. | |
21921 | ||
21922 | 1. If PST is NULL, then this procedure uses the data from the program | |
21923 | to create all necessary symbol tables, and their linetables. | |
21924 | ||
21925 | 2. If PST is not NULL, this procedure reads the program to determine | |
21926 | the list of files included by the unit represented by PST, and | |
21927 | builds all the associated partial symbol tables. | |
21928 | ||
21929 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21930 | It is used for relative paths in the line table. | |
21931 | NOTE: When processing partial symtabs (pst != NULL), | |
21932 | comp_dir == pst->dirname. | |
21933 | ||
21934 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21935 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21936 | symtab we don't use it in the name of the psymtabs we create. | |
21937 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21938 | A good testcase for this is mb-inline.exp. |
21939 | ||
527f3840 JK |
21940 | LOWPC is the lowest address in CU (or 0 if not known). |
21941 | ||
21942 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21943 | for its PC<->lines mapping information. Otherwise only the filename | |
21944 | table is read in. */ | |
f3f5162e DE |
21945 | |
21946 | static void | |
21947 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21948 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21949 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21950 | { |
5e22e966 | 21951 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21952 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21953 | |
527f3840 JK |
21954 | if (decode_mapping) |
21955 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21956 | |
21957 | if (decode_for_pst_p) | |
21958 | { | |
aaa75496 | 21959 | /* Now that we're done scanning the Line Header Program, we can |
dda83cd7 | 21960 | create the psymtab of each included file. */ |
7ba99d21 | 21961 | for (auto &file_entry : lh->file_names ()) |
dda83cd7 SM |
21962 | if (file_entry.included_p == 1) |
21963 | { | |
c89b44cd | 21964 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21965 | const char *include_name = |
7ba99d21 AT |
21966 | psymtab_include_file_name (lh, file_entry, pst, |
21967 | comp_dir, &name_holder); | |
c6da4cef | 21968 | if (include_name != NULL) |
dda83cd7 SM |
21969 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21970 | } | |
aaa75496 | 21971 | } |
cb1df416 DJ |
21972 | else |
21973 | { | |
21974 | /* Make sure a symtab is created for every file, even files | |
21975 | which contain only variables (i.e. no code with associated | |
21976 | line numbers). */ | |
c24bdb02 KS |
21977 | buildsym_compunit *builder = cu->get_builder (); |
21978 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21979 | |
7ba99d21 | 21980 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21981 | { |
804d2729 | 21982 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21983 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21984 | { |
c24bdb02 | 21985 | builder->get_current_subfile ()->symtab |
804d2729 | 21986 | = allocate_symtab (cust, |
c24bdb02 | 21987 | builder->get_current_subfile ()->name); |
43f3e411 | 21988 | } |
c24bdb02 | 21989 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21990 | } |
21991 | } | |
c906108c SS |
21992 | } |
21993 | ||
21994 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21995 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21996 | or NULL if not known. |
c906108c SS |
21997 | This routine tries to keep line numbers from identical absolute and |
21998 | relative file names in a common subfile. | |
21999 | ||
22000 | Using the `list' example from the GDB testsuite, which resides in | |
22001 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
22002 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
22003 | ||
c5aa993b | 22004 | DW_AT_name: /srcdir/list0.c |
4d663531 | 22005 | DW_AT_comp_dir: /compdir |
357e46e7 | 22006 | files.files[0].name: list0.h |
c5aa993b | 22007 | files.files[0].dir: /srcdir |
357e46e7 | 22008 | files.files[1].name: list0.c |
c5aa993b | 22009 | files.files[1].dir: /srcdir |
c906108c SS |
22010 | |
22011 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
22012 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
22013 | start_subfile will ensure that this happens provided that we pass the | |
22014 | concatenation of files.files[1].dir and files.files[1].name as the | |
22015 | subfile's name. */ | |
c906108c SS |
22016 | |
22017 | static void | |
804d2729 TT |
22018 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
22019 | const char *dirname) | |
c906108c | 22020 | { |
43816ebc | 22021 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 22022 | |
4d663531 | 22023 | /* In order not to lose the line information directory, |
4f1520fb FR |
22024 | we concatenate it to the filename when it makes sense. |
22025 | Note that the Dwarf3 standard says (speaking of filenames in line | |
22026 | information): ``The directory index is ignored for file names | |
22027 | that represent full path names''. Thus ignoring dirname in the | |
22028 | `else' branch below isn't an issue. */ | |
c906108c | 22029 | |
d5166ae1 | 22030 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 22031 | { |
43816ebc TT |
22032 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
22033 | filename = copy.get (); | |
d521ce57 | 22034 | } |
c906108c | 22035 | |
c24bdb02 | 22036 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
22037 | } |
22038 | ||
804d2729 TT |
22039 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
22040 | buildsym_compunit constructor. */ | |
f4dc4d17 | 22041 | |
c24bdb02 KS |
22042 | struct compunit_symtab * |
22043 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
22044 | CORE_ADDR low_pc) | |
f4dc4d17 | 22045 | { |
c24bdb02 | 22046 | gdb_assert (m_builder == nullptr); |
43f3e411 | 22047 | |
c24bdb02 | 22048 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 22049 | (this->per_objfile->objfile, |
c24bdb02 | 22050 | name, comp_dir, language, low_pc)); |
93b8bea4 | 22051 | |
c24bdb02 | 22052 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 22053 | |
c24bdb02 KS |
22054 | get_builder ()->record_debugformat ("DWARF 2"); |
22055 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 22056 | |
c24bdb02 | 22057 | processing_has_namespace_info = false; |
43f3e411 | 22058 | |
c24bdb02 | 22059 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
22060 | } |
22061 | ||
4c2df51b DJ |
22062 | static void |
22063 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 22064 | struct dwarf2_cu *cu) |
4c2df51b | 22065 | { |
5e22e966 | 22066 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
22067 | struct comp_unit_head *cu_header = &cu->header; |
22068 | ||
4c2df51b DJ |
22069 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
22070 | code here to turn a symbol with DW_AT_external and a | |
22071 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
22072 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
22073 | with some versions of binutils) where shared libraries could have | |
22074 | relocations against symbols in their debug information - the | |
22075 | minimal symbol would have the right address, but the debug info | |
22076 | would not. It's no longer necessary, because we will explicitly | |
22077 | apply relocations when we read in the debug information now. */ | |
22078 | ||
22079 | /* A DW_AT_location attribute with no contents indicates that a | |
22080 | variable has been optimized away. */ | |
9d2246fc | 22081 | if (attr->form_is_block () && attr->as_block ()->size == 0) |
4c2df51b | 22082 | { |
f1e6e072 | 22083 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
22084 | return; |
22085 | } | |
22086 | ||
22087 | /* Handle one degenerate form of location expression specially, to | |
22088 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
22089 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
22090 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 22091 | |
9d2246fc TT |
22092 | if (attr->form_is_block ()) |
22093 | { | |
22094 | struct dwarf_block *block = attr->as_block (); | |
22095 | ||
22096 | if ((block->data[0] == DW_OP_addr | |
22097 | && block->size == 1 + cu_header->addr_size) | |
22098 | || ((block->data[0] == DW_OP_GNU_addr_index | |
dda83cd7 | 22099 | || block->data[0] == DW_OP_addrx) |
9d2246fc TT |
22100 | && (block->size |
22101 | == 1 + leb128_size (&block->data[1])))) | |
22102 | { | |
22103 | unsigned int dummy; | |
22104 | ||
22105 | if (block->data[0] == DW_OP_addr) | |
22106 | SET_SYMBOL_VALUE_ADDRESS | |
22107 | (sym, cu->header.read_address (objfile->obfd, | |
22108 | block->data + 1, | |
38583298 | 22109 | &dummy)); |
9d2246fc TT |
22110 | else |
22111 | SET_SYMBOL_VALUE_ADDRESS | |
22112 | (sym, read_addr_index_from_leb128 (cu, block->data + 1, | |
22113 | &dummy)); | |
22114 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; | |
22115 | fixup_symbol_section (sym, objfile); | |
22116 | SET_SYMBOL_VALUE_ADDRESS | |
22117 | (sym, | |
22118 | SYMBOL_VALUE_ADDRESS (sym) | |
a52d653e | 22119 | + objfile->section_offsets[sym->section_index ()]); |
9d2246fc TT |
22120 | return; |
22121 | } | |
4c2df51b DJ |
22122 | } |
22123 | ||
22124 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
22125 | expression evaluator, and use LOC_COMPUTED only when necessary | |
22126 | (i.e. when the value of a register or memory location is | |
22127 | referenced, or a thread-local block, etc.). Then again, it might | |
22128 | not be worthwhile. I'm assuming that it isn't unless performance | |
22129 | or memory numbers show me otherwise. */ | |
22130 | ||
f1e6e072 | 22131 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 22132 | |
f1e6e072 | 22133 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 22134 | cu->has_loclist = true; |
4c2df51b DJ |
22135 | } |
22136 | ||
c906108c SS |
22137 | /* Given a pointer to a DWARF information entry, figure out if we need |
22138 | to make a symbol table entry for it, and if so, create a new entry | |
22139 | and return a pointer to it. | |
22140 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
22141 | used the passed type. |
22142 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
22143 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
22144 | |
22145 | static struct symbol * | |
5e2db402 TT |
22146 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
22147 | struct symbol *space) | |
c906108c | 22148 | { |
976ca316 SM |
22149 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22150 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 22151 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 22152 | struct symbol *sym = NULL; |
15d034d0 | 22153 | const char *name; |
c906108c SS |
22154 | struct attribute *attr = NULL; |
22155 | struct attribute *attr2 = NULL; | |
e142c38c | 22156 | CORE_ADDR baseaddr; |
e37fd15a SW |
22157 | struct pending **list_to_add = NULL; |
22158 | ||
edb3359d | 22159 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 22160 | |
b3b3bada | 22161 | baseaddr = objfile->text_section_offset (); |
c906108c | 22162 | |
94af9270 | 22163 | name = dwarf2_name (die, cu); |
c906108c SS |
22164 | if (name) |
22165 | { | |
34eaf542 | 22166 | int suppress_add = 0; |
94af9270 | 22167 | |
34eaf542 TT |
22168 | if (space) |
22169 | sym = space; | |
22170 | else | |
8c14c3a3 | 22171 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 22172 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
22173 | |
22174 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 22175 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
22176 | /* Fortran does not have mangling standard and the mangling does differ |
22177 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
22178 | const char *physname |
22179 | = (cu->language == language_fortran | |
22180 | ? dwarf2_full_name (name, die, cu) | |
22181 | : dwarf2_physname (name, die, cu)); | |
22182 | const char *linkagename = dw2_linkage_name (die, cu); | |
22183 | ||
22184 | if (linkagename == nullptr || cu->language == language_ada) | |
22185 | sym->set_linkage_name (physname); | |
22186 | else | |
22187 | { | |
22188 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
22189 | sym->set_linkage_name (linkagename); | |
22190 | } | |
f55ee35c | 22191 | |
c906108c | 22192 | /* Default assumptions. |
dda83cd7 | 22193 | Use the passed type or decode it from the die. */ |
176620f1 | 22194 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 22195 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
22196 | if (type != NULL) |
22197 | SYMBOL_TYPE (sym) = type; | |
22198 | else | |
e7c27a73 | 22199 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
22200 | attr = dwarf2_attr (die, |
22201 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
22202 | cu); | |
435d3d88 | 22203 | if (attr != nullptr) |
529908cb | 22204 | SYMBOL_LINE (sym) = attr->constant_value (0); |
cb1df416 | 22205 | |
edb3359d DJ |
22206 | attr = dwarf2_attr (die, |
22207 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
22208 | cu); | |
aa659cfa | 22209 | if (attr != nullptr && attr->is_nonnegative ()) |
cb1df416 | 22210 | { |
529908cb | 22211 | file_name_index file_index |
aa659cfa | 22212 | = (file_name_index) attr->as_nonnegative (); |
8c43009f | 22213 | struct file_entry *fe; |
9a619af0 | 22214 | |
ecfb656c PA |
22215 | if (cu->line_header != NULL) |
22216 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
22217 | else |
22218 | fe = NULL; | |
22219 | ||
22220 | if (fe == NULL) | |
b98664d3 | 22221 | complaint (_("file index out of range")); |
8c43009f PA |
22222 | else |
22223 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
22224 | } |
22225 | ||
c906108c SS |
22226 | switch (die->tag) |
22227 | { | |
22228 | case DW_TAG_label: | |
e142c38c | 22229 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 22230 | if (attr != nullptr) |
3e29f34a MR |
22231 | { |
22232 | CORE_ADDR addr; | |
22233 | ||
95f982e5 | 22234 | addr = attr->as_address (); |
3e29f34a | 22235 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 22236 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
8f5c6526 | 22237 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
3e29f34a | 22238 | } |
8f5c6526 TV |
22239 | else |
22240 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; | |
0f5238ed TT |
22241 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
22242 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
d3cb6808 | 22243 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
22244 | break; |
22245 | case DW_TAG_subprogram: | |
22246 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22247 | finish_block. */ | |
f1e6e072 | 22248 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 22249 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 22250 | if ((attr2 != nullptr && attr2->as_boolean ()) |
0a4b0913 AB |
22251 | || cu->language == language_ada |
22252 | || cu->language == language_fortran) | |
c906108c | 22253 | { |
dda83cd7 SM |
22254 | /* Subprograms marked external are stored as a global symbol. |
22255 | Ada and Fortran subprograms, whether marked external or | |
22256 | not, are always stored as a global symbol, because we want | |
22257 | to be able to access them globally. For instance, we want | |
22258 | to be able to break on a nested subprogram without having | |
22259 | to specify the context. */ | |
c24bdb02 | 22260 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
22261 | } |
22262 | else | |
22263 | { | |
e37fd15a | 22264 | list_to_add = cu->list_in_scope; |
c906108c SS |
22265 | } |
22266 | break; | |
edb3359d DJ |
22267 | case DW_TAG_inlined_subroutine: |
22268 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22269 | finish_block. */ | |
f1e6e072 | 22270 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 22271 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 22272 | list_to_add = cu->list_in_scope; |
edb3359d | 22273 | break; |
34eaf542 TT |
22274 | case DW_TAG_template_value_param: |
22275 | suppress_add = 1; | |
22276 | /* Fall through. */ | |
72929c62 | 22277 | case DW_TAG_constant: |
c906108c | 22278 | case DW_TAG_variable: |
254e6b9e | 22279 | case DW_TAG_member: |
0963b4bd MS |
22280 | /* Compilation with minimal debug info may result in |
22281 | variables with missing type entries. Change the | |
22282 | misleading `void' type to something sensible. */ | |
78134374 | 22283 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 22284 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 22285 | |
e142c38c | 22286 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
22287 | /* In the case of DW_TAG_member, we should only be called for |
22288 | static const members. */ | |
22289 | if (die->tag == DW_TAG_member) | |
22290 | { | |
3863f96c DE |
22291 | /* dwarf2_add_field uses die_is_declaration, |
22292 | so we do the same. */ | |
254e6b9e DE |
22293 | gdb_assert (die_is_declaration (die, cu)); |
22294 | gdb_assert (attr); | |
22295 | } | |
435d3d88 | 22296 | if (attr != nullptr) |
c906108c | 22297 | { |
e7c27a73 | 22298 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 22299 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 22300 | if (!suppress_add) |
34eaf542 | 22301 | { |
c45bc3f8 | 22302 | if (attr2 != nullptr && attr2->as_boolean ()) |
c24bdb02 | 22303 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 22304 | else |
e37fd15a | 22305 | list_to_add = cu->list_in_scope; |
34eaf542 | 22306 | } |
c906108c SS |
22307 | break; |
22308 | } | |
e142c38c | 22309 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 22310 | if (attr != nullptr) |
c906108c | 22311 | { |
e7c27a73 | 22312 | var_decode_location (attr, sym, cu); |
e142c38c | 22313 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
22314 | |
22315 | /* Fortran explicitly imports any global symbols to the local | |
22316 | scope by DW_TAG_common_block. */ | |
22317 | if (cu->language == language_fortran && die->parent | |
22318 | && die->parent->tag == DW_TAG_common_block) | |
22319 | attr2 = NULL; | |
22320 | ||
caac4577 JG |
22321 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22322 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 22323 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
22324 | { |
22325 | /* When a static variable is eliminated by the linker, | |
22326 | the corresponding debug information is not stripped | |
22327 | out, but the variable address is set to null; | |
22328 | do not add such variables into symbol table. */ | |
22329 | } | |
c45bc3f8 | 22330 | else if (attr2 != nullptr && attr2->as_boolean ()) |
1c809c68 | 22331 | { |
4b610737 TT |
22332 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22333 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 22334 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
22335 | { |
22336 | /* A global static variable might be subject to | |
22337 | copy relocation. We first check for a local | |
22338 | minsym, though, because maybe the symbol was | |
22339 | marked hidden, in which case this would not | |
22340 | apply. */ | |
22341 | bound_minimal_symbol found | |
22342 | = (lookup_minimal_symbol_linkage | |
987012b8 | 22343 | (sym->linkage_name (), objfile)); |
4b610737 TT |
22344 | if (found.minsym != nullptr) |
22345 | sym->maybe_copied = 1; | |
22346 | } | |
f55ee35c | 22347 | |
1c809c68 TT |
22348 | /* A variable with DW_AT_external is never static, |
22349 | but it may be block-scoped. */ | |
804d2729 | 22350 | list_to_add |
c24bdb02 KS |
22351 | = ((cu->list_in_scope |
22352 | == cu->get_builder ()->get_file_symbols ()) | |
22353 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22354 | : cu->list_in_scope); |
1c809c68 | 22355 | } |
c906108c | 22356 | else |
e37fd15a | 22357 | list_to_add = cu->list_in_scope; |
c906108c SS |
22358 | } |
22359 | else | |
22360 | { | |
22361 | /* We do not know the address of this symbol. | |
dda83cd7 SM |
22362 | If it is an external symbol and we have type information |
22363 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
22364 | The address of the variable will then be determined from | |
22365 | the minimal symbol table whenever the variable is | |
22366 | referenced. */ | |
e142c38c | 22367 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
22368 | |
22369 | /* Fortran explicitly imports any global symbols to the local | |
22370 | scope by DW_TAG_common_block. */ | |
22371 | if (cu->language == language_fortran && die->parent | |
22372 | && die->parent->tag == DW_TAG_common_block) | |
22373 | { | |
22374 | /* SYMBOL_CLASS doesn't matter here because | |
22375 | read_common_block is going to reset it. */ | |
22376 | if (!suppress_add) | |
22377 | list_to_add = cu->list_in_scope; | |
22378 | } | |
c45bc3f8 | 22379 | else if (attr2 != nullptr && attr2->as_boolean () |
0971de02 | 22380 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 22381 | { |
0fe7935b DJ |
22382 | /* A variable with DW_AT_external is never static, but it |
22383 | may be block-scoped. */ | |
804d2729 | 22384 | list_to_add |
c24bdb02 KS |
22385 | = ((cu->list_in_scope |
22386 | == cu->get_builder ()->get_file_symbols ()) | |
22387 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22388 | : cu->list_in_scope); |
0fe7935b | 22389 | |
f1e6e072 | 22390 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 22391 | } |
442ddf59 JK |
22392 | else if (!die_is_declaration (die, cu)) |
22393 | { | |
22394 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
22395 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
22396 | if (!suppress_add) |
22397 | list_to_add = cu->list_in_scope; | |
442ddf59 | 22398 | } |
c906108c SS |
22399 | } |
22400 | break; | |
22401 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
22402 | { |
22403 | /* If we are inside a function, mark this as an argument. If | |
22404 | not, we might be looking at an argument to an inlined function | |
22405 | when we do not have enough information to show inlined frames; | |
22406 | pretend it's a local variable in that case so that the user can | |
22407 | still see it. */ | |
804d2729 | 22408 | struct context_stack *curr |
c24bdb02 | 22409 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
22410 | if (curr != nullptr && curr->name != nullptr) |
22411 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
22412 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 22413 | if (attr != nullptr) |
a60f3166 TT |
22414 | { |
22415 | var_decode_location (attr, sym, cu); | |
22416 | } | |
22417 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 22418 | if (attr != nullptr) |
a60f3166 TT |
22419 | { |
22420 | dwarf2_const_value (attr, sym, cu); | |
22421 | } | |
f346a30d | 22422 | |
a60f3166 TT |
22423 | list_to_add = cu->list_in_scope; |
22424 | } | |
c906108c SS |
22425 | break; |
22426 | case DW_TAG_unspecified_parameters: | |
22427 | /* From varargs functions; gdb doesn't seem to have any | |
22428 | interest in this information, so just ignore it for now. | |
22429 | (FIXME?) */ | |
22430 | break; | |
34eaf542 TT |
22431 | case DW_TAG_template_type_param: |
22432 | suppress_add = 1; | |
22433 | /* Fall through. */ | |
c906108c | 22434 | case DW_TAG_class_type: |
680b30c7 | 22435 | case DW_TAG_interface_type: |
c906108c SS |
22436 | case DW_TAG_structure_type: |
22437 | case DW_TAG_union_type: | |
72019c9c | 22438 | case DW_TAG_set_type: |
c906108c | 22439 | case DW_TAG_enumeration_type: |
f1e6e072 | 22440 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22441 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 22442 | |
63d06c5c | 22443 | { |
9c37b5ae | 22444 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
22445 | really ever be static objects: otherwise, if you try |
22446 | to, say, break of a class's method and you're in a file | |
22447 | which doesn't mention that class, it won't work unless | |
22448 | the check for all static symbols in lookup_symbol_aux | |
22449 | saves you. See the OtherFileClass tests in | |
22450 | gdb.c++/namespace.exp. */ | |
22451 | ||
e37fd15a | 22452 | if (!suppress_add) |
34eaf542 | 22453 | { |
c24bdb02 | 22454 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 22455 | list_to_add |
c24bdb02 | 22456 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 22457 | && cu->language == language_cplus |
c24bdb02 | 22458 | ? builder->get_global_symbols () |
804d2729 | 22459 | : cu->list_in_scope); |
63d06c5c | 22460 | |
64382290 | 22461 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 22462 | ... }" also defines a typedef for "foo". */ |
64382290 | 22463 | if (cu->language == language_cplus |
45280282 | 22464 | || cu->language == language_ada |
c44af4eb TT |
22465 | || cu->language == language_d |
22466 | || cu->language == language_rust) | |
64382290 TT |
22467 | { |
22468 | /* The symbol's name is already allocated along | |
22469 | with this objfile, so we don't need to | |
22470 | duplicate it for the type. */ | |
7d93a1e0 | 22471 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 22472 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 22473 | } |
63d06c5c DC |
22474 | } |
22475 | } | |
c906108c SS |
22476 | break; |
22477 | case DW_TAG_typedef: | |
f1e6e072 | 22478 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 22479 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22480 | list_to_add = cu->list_in_scope; |
63d06c5c | 22481 | break; |
d8f62e84 | 22482 | case DW_TAG_array_type: |
c906108c | 22483 | case DW_TAG_base_type: |
dda83cd7 | 22484 | case DW_TAG_subrange_type: |
f1e6e072 | 22485 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22486 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22487 | list_to_add = cu->list_in_scope; |
c906108c SS |
22488 | break; |
22489 | case DW_TAG_enumerator: | |
e142c38c | 22490 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 22491 | if (attr != nullptr) |
c906108c | 22492 | { |
e7c27a73 | 22493 | dwarf2_const_value (attr, sym, cu); |
c906108c | 22494 | } |
63d06c5c DC |
22495 | { |
22496 | /* NOTE: carlton/2003-11-10: See comment above in the | |
22497 | DW_TAG_class_type, etc. block. */ | |
22498 | ||
804d2729 | 22499 | list_to_add |
c24bdb02 | 22500 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 22501 | && cu->language == language_cplus |
c24bdb02 | 22502 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 22503 | : cu->list_in_scope); |
63d06c5c | 22504 | } |
c906108c | 22505 | break; |
74921315 | 22506 | case DW_TAG_imported_declaration: |
5c4e30ca | 22507 | case DW_TAG_namespace: |
f1e6e072 | 22508 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 22509 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 22510 | break; |
530e8392 KB |
22511 | case DW_TAG_module: |
22512 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22513 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 22514 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 22515 | break; |
4357ac6c | 22516 | case DW_TAG_common_block: |
f1e6e072 | 22517 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 22518 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 22519 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 22520 | break; |
c906108c SS |
22521 | default: |
22522 | /* Not a tag we recognize. Hopefully we aren't processing | |
22523 | trash data, but since we must specifically ignore things | |
22524 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22525 | this point. */ |
b98664d3 | 22526 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 22527 | dwarf_tag_name (die->tag)); |
c906108c SS |
22528 | break; |
22529 | } | |
df8a16a1 | 22530 | |
e37fd15a SW |
22531 | if (suppress_add) |
22532 | { | |
22533 | sym->hash_next = objfile->template_symbols; | |
22534 | objfile->template_symbols = sym; | |
22535 | list_to_add = NULL; | |
22536 | } | |
22537 | ||
22538 | if (list_to_add != NULL) | |
d3cb6808 | 22539 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 22540 | |
df8a16a1 DJ |
22541 | /* For the benefit of old versions of GCC, check for anonymous |
22542 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22543 | if (!cu->processing_has_namespace_info |
94af9270 | 22544 | && cu->language == language_cplus) |
c24bdb02 | 22545 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
22546 | } |
22547 | return (sym); | |
22548 | } | |
22549 | ||
98bfdba5 PA |
22550 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22551 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22552 | standard (v4) is not entirely clear about the meaning of using | |
22553 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22554 | wider than the data. The conclusion of a discussion on the DWARF | |
22555 | list was that this is unspecified. We choose to always zero-extend | |
22556 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22557 | |
98bfdba5 | 22558 | static gdb_byte * |
ff39bb5e | 22559 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22560 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22561 | { |
5e22e966 | 22562 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
22563 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22564 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
529908cb | 22565 | LONGEST l = attr->constant_value (0); |
98bfdba5 PA |
22566 | |
22567 | if (bits < sizeof (*value) * 8) | |
22568 | { | |
22569 | l &= ((LONGEST) 1 << bits) - 1; | |
22570 | *value = l; | |
22571 | } | |
22572 | else if (bits == sizeof (*value) * 8) | |
22573 | *value = l; | |
22574 | else | |
22575 | { | |
224c3ddb | 22576 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22577 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22578 | return bytes; | |
22579 | } | |
22580 | ||
22581 | return NULL; | |
22582 | } | |
22583 | ||
22584 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22585 | the value does not fit in *VALUE, set *BYTES - either already | |
22586 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22587 | or, set *BATON, if we translated the constant to a location | |
22588 | expression. */ | |
22589 | ||
22590 | static void | |
ff39bb5e | 22591 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22592 | const char *name, struct obstack *obstack, |
22593 | struct dwarf2_cu *cu, | |
d521ce57 | 22594 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22595 | struct dwarf2_locexpr_baton **baton) |
22596 | { | |
5e22e966 | 22597 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 22598 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 22599 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22600 | struct dwarf_block *blk; |
98bfdba5 PA |
22601 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22602 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22603 | ||
22604 | *value = 0; | |
22605 | *bytes = NULL; | |
22606 | *baton = NULL; | |
c906108c SS |
22607 | |
22608 | switch (attr->form) | |
22609 | { | |
22610 | case DW_FORM_addr: | |
336d760d | 22611 | case DW_FORM_addrx: |
3019eac3 | 22612 | case DW_FORM_GNU_addr_index: |
ac56253d | 22613 | { |
ac56253d TT |
22614 | gdb_byte *data; |
22615 | ||
98bfdba5 PA |
22616 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22617 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22618 | cu_header->addr_size, |
98bfdba5 | 22619 | TYPE_LENGTH (type)); |
ac56253d TT |
22620 | /* Symbols of this form are reasonably rare, so we just |
22621 | piggyback on the existing location code rather than writing | |
22622 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22623 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 22624 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
22625 | (*baton)->per_cu = cu->per_cu; |
22626 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22627 | |
98bfdba5 | 22628 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22629 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22630 | (*baton)->data = data; |
ac56253d TT |
22631 | |
22632 | data[0] = DW_OP_addr; | |
22633 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
36d378cf | 22634 | byte_order, attr->as_address ()); |
ac56253d | 22635 | data[cu_header->addr_size + 1] = DW_OP_stack_value; |
ac56253d | 22636 | } |
c906108c | 22637 | break; |
4ac36638 | 22638 | case DW_FORM_string: |
93b5768b | 22639 | case DW_FORM_strp: |
cf532bd1 | 22640 | case DW_FORM_strx: |
3019eac3 | 22641 | case DW_FORM_GNU_str_index: |
36586728 | 22642 | case DW_FORM_GNU_strp_alt: |
c6481205 | 22643 | /* The string is already allocated on the objfile obstack, point |
98bfdba5 | 22644 | directly to it. */ |
2c830f54 | 22645 | *bytes = (const gdb_byte *) attr->as_string (); |
93b5768b | 22646 | break; |
c906108c SS |
22647 | case DW_FORM_block1: |
22648 | case DW_FORM_block2: | |
22649 | case DW_FORM_block4: | |
22650 | case DW_FORM_block: | |
2dc7f7b3 | 22651 | case DW_FORM_exprloc: |
0224619f | 22652 | case DW_FORM_data16: |
9d2246fc | 22653 | blk = attr->as_block (); |
98bfdba5 PA |
22654 | if (TYPE_LENGTH (type) != blk->size) |
22655 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22656 | TYPE_LENGTH (type)); | |
22657 | *bytes = blk->data; | |
c906108c | 22658 | break; |
2df3850c JM |
22659 | |
22660 | /* The DW_AT_const_value attributes are supposed to carry the | |
22661 | symbol's value "represented as it would be on the target | |
22662 | architecture." By the time we get here, it's already been | |
22663 | converted to host endianness, so we just need to sign- or | |
22664 | zero-extend it as appropriate. */ | |
22665 | case DW_FORM_data1: | |
3aef2284 | 22666 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22667 | break; |
c906108c | 22668 | case DW_FORM_data2: |
3aef2284 | 22669 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22670 | break; |
c906108c | 22671 | case DW_FORM_data4: |
3aef2284 | 22672 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22673 | break; |
c906108c | 22674 | case DW_FORM_data8: |
3aef2284 | 22675 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22676 | break; |
22677 | ||
c906108c | 22678 | case DW_FORM_sdata: |
663c44ac | 22679 | case DW_FORM_implicit_const: |
1bc397c5 | 22680 | *value = attr->as_signed (); |
2df3850c JM |
22681 | break; |
22682 | ||
c906108c | 22683 | case DW_FORM_udata: |
529908cb | 22684 | *value = attr->as_unsigned (); |
c906108c | 22685 | break; |
2df3850c | 22686 | |
c906108c | 22687 | default: |
b98664d3 | 22688 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22689 | dwarf_form_name (attr->form)); |
98bfdba5 | 22690 | *value = 0; |
c906108c SS |
22691 | break; |
22692 | } | |
22693 | } | |
22694 | ||
2df3850c | 22695 | |
98bfdba5 PA |
22696 | /* Copy constant value from an attribute to a symbol. */ |
22697 | ||
2df3850c | 22698 | static void |
ff39bb5e | 22699 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22700 | struct dwarf2_cu *cu) |
2df3850c | 22701 | { |
5e22e966 | 22702 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 22703 | LONGEST value; |
d521ce57 | 22704 | const gdb_byte *bytes; |
98bfdba5 | 22705 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22706 | |
98bfdba5 | 22707 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 22708 | sym->print_name (), |
98bfdba5 PA |
22709 | &objfile->objfile_obstack, cu, |
22710 | &value, &bytes, &baton); | |
2df3850c | 22711 | |
98bfdba5 PA |
22712 | if (baton != NULL) |
22713 | { | |
98bfdba5 | 22714 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22715 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22716 | } |
22717 | else if (bytes != NULL) | |
22718 | { | |
22719 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22720 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22721 | } |
22722 | else | |
22723 | { | |
22724 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22725 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22726 | } |
2df3850c JM |
22727 | } |
22728 | ||
c906108c SS |
22729 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22730 | ||
22731 | static struct type * | |
e7c27a73 | 22732 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22733 | { |
c906108c | 22734 | struct attribute *type_attr; |
c906108c | 22735 | |
e142c38c | 22736 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22737 | if (!type_attr) |
22738 | { | |
5e22e966 | 22739 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22740 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22741 | return objfile_type (objfile)->builtin_void; |
c906108c | 22742 | } |
348e048f | 22743 | |
673bfd45 | 22744 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22745 | } |
22746 | ||
b4ba55a1 JB |
22747 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22748 | that allows to find parallel types through that information instead | |
22749 | of having to do expensive parallel lookups by type name. */ | |
22750 | ||
22751 | static int | |
22752 | need_gnat_info (struct dwarf2_cu *cu) | |
22753 | { | |
de4cb04a JB |
22754 | /* Assume that the Ada compiler was GNAT, which always produces |
22755 | the auxiliary information. */ | |
22756 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22757 | } |
22758 | ||
b4ba55a1 JB |
22759 | /* Return the auxiliary type of the die in question using its |
22760 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22761 | attribute is not present. */ | |
22762 | ||
22763 | static struct type * | |
22764 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22765 | { | |
b4ba55a1 | 22766 | struct attribute *type_attr; |
b4ba55a1 JB |
22767 | |
22768 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22769 | if (!type_attr) | |
22770 | return NULL; | |
22771 | ||
673bfd45 | 22772 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22773 | } |
22774 | ||
22775 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22776 | descriptive type accordingly. */ | |
22777 | ||
22778 | static void | |
22779 | set_descriptive_type (struct type *type, struct die_info *die, | |
22780 | struct dwarf2_cu *cu) | |
22781 | { | |
22782 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22783 | ||
22784 | if (descriptive_type) | |
22785 | { | |
22786 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22787 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22788 | } | |
22789 | } | |
22790 | ||
c906108c SS |
22791 | /* Return the containing type of the die in question using its |
22792 | DW_AT_containing_type attribute. */ | |
22793 | ||
22794 | static struct type * | |
e7c27a73 | 22795 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22796 | { |
c906108c | 22797 | struct attribute *type_attr; |
5e22e966 | 22798 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22799 | |
e142c38c | 22800 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22801 | if (!type_attr) |
22802 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22803 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22804 | |
673bfd45 | 22805 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22806 | } |
22807 | ||
ac9ec31b DE |
22808 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22809 | ||
22810 | static struct type * | |
22811 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22812 | { | |
976ca316 SM |
22813 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22814 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 22815 | char *saved; |
ac9ec31b | 22816 | |
528e1572 SM |
22817 | std::string message |
22818 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22819 | objfile_name (objfile), | |
22820 | sect_offset_str (cu->header.sect_off), | |
22821 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22822 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22823 | |
19f392bc | 22824 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22825 | } |
22826 | ||
673bfd45 | 22827 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22828 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22829 | DW_AT_containing_type. | |
673bfd45 DE |
22830 | If there is no type substitute an error marker. */ |
22831 | ||
c906108c | 22832 | static struct type * |
ff39bb5e | 22833 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22834 | struct dwarf2_cu *cu) |
c906108c | 22835 | { |
976ca316 SM |
22836 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22837 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
22838 | struct type *this_type; |
22839 | ||
ac9ec31b DE |
22840 | gdb_assert (attr->name == DW_AT_type |
22841 | || attr->name == DW_AT_GNAT_descriptive_type | |
22842 | || attr->name == DW_AT_containing_type); | |
22843 | ||
673bfd45 DE |
22844 | /* First see if we have it cached. */ |
22845 | ||
36586728 TT |
22846 | if (attr->form == DW_FORM_GNU_ref_alt) |
22847 | { | |
22848 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 22849 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 22850 | |
976ca316 SM |
22851 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
22852 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 22853 | } |
cd6c91b4 | 22854 | else if (attr->form_is_ref ()) |
673bfd45 | 22855 | { |
0826b30a | 22856 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 22857 | |
976ca316 | 22858 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 22859 | } |
55f1336d | 22860 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22861 | { |
630ed6b9 | 22862 | ULONGEST signature = attr->as_signature (); |
673bfd45 | 22863 | |
ac9ec31b | 22864 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22865 | } |
22866 | else | |
22867 | { | |
b98664d3 | 22868 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22869 | " at %s [in module %s]"), |
22870 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22871 | objfile_name (objfile)); |
ac9ec31b | 22872 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22873 | } |
22874 | ||
22875 | /* If not cached we need to read it in. */ | |
22876 | ||
22877 | if (this_type == NULL) | |
22878 | { | |
ac9ec31b | 22879 | struct die_info *type_die = NULL; |
673bfd45 DE |
22880 | struct dwarf2_cu *type_cu = cu; |
22881 | ||
cd6c91b4 | 22882 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22883 | type_die = follow_die_ref (die, attr, &type_cu); |
22884 | if (type_die == NULL) | |
22885 | return build_error_marker_type (cu, die); | |
22886 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22887 | from an inter-CU reference and the type's CU got expanded before |
22888 | ours. */ | |
ac9ec31b | 22889 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22890 | } |
22891 | ||
22892 | /* If we still don't have a type use an error marker. */ | |
22893 | ||
22894 | if (this_type == NULL) | |
ac9ec31b | 22895 | return build_error_marker_type (cu, die); |
673bfd45 | 22896 | |
f792889a | 22897 | return this_type; |
c906108c SS |
22898 | } |
22899 | ||
673bfd45 DE |
22900 | /* Return the type in DIE, CU. |
22901 | Returns NULL for invalid types. | |
22902 | ||
02142a6c | 22903 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22904 | and only reads the die in if necessary. |
22905 | ||
22906 | NOTE: This can be called when reading in partial or full symbols. */ | |
22907 | ||
f792889a | 22908 | static struct type * |
e7c27a73 | 22909 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22910 | { |
f792889a DJ |
22911 | struct type *this_type; |
22912 | ||
22913 | this_type = get_die_type (die, cu); | |
22914 | if (this_type) | |
22915 | return this_type; | |
22916 | ||
673bfd45 DE |
22917 | return read_type_die_1 (die, cu); |
22918 | } | |
22919 | ||
22920 | /* Read the type in DIE, CU. | |
22921 | Returns NULL for invalid types. */ | |
22922 | ||
22923 | static struct type * | |
22924 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22925 | { | |
22926 | struct type *this_type = NULL; | |
22927 | ||
c906108c SS |
22928 | switch (die->tag) |
22929 | { | |
22930 | case DW_TAG_class_type: | |
680b30c7 | 22931 | case DW_TAG_interface_type: |
c906108c SS |
22932 | case DW_TAG_structure_type: |
22933 | case DW_TAG_union_type: | |
f792889a | 22934 | this_type = read_structure_type (die, cu); |
c906108c SS |
22935 | break; |
22936 | case DW_TAG_enumeration_type: | |
f792889a | 22937 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22938 | break; |
22939 | case DW_TAG_subprogram: | |
22940 | case DW_TAG_subroutine_type: | |
edb3359d | 22941 | case DW_TAG_inlined_subroutine: |
f792889a | 22942 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22943 | break; |
22944 | case DW_TAG_array_type: | |
f792889a | 22945 | this_type = read_array_type (die, cu); |
c906108c | 22946 | break; |
72019c9c | 22947 | case DW_TAG_set_type: |
f792889a | 22948 | this_type = read_set_type (die, cu); |
72019c9c | 22949 | break; |
c906108c | 22950 | case DW_TAG_pointer_type: |
f792889a | 22951 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22952 | break; |
22953 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22954 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22955 | break; |
22956 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22957 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22958 | break; | |
22959 | case DW_TAG_rvalue_reference_type: | |
22960 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22961 | break; |
22962 | case DW_TAG_const_type: | |
f792889a | 22963 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22964 | break; |
22965 | case DW_TAG_volatile_type: | |
f792889a | 22966 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22967 | break; |
06d66ee9 TT |
22968 | case DW_TAG_restrict_type: |
22969 | this_type = read_tag_restrict_type (die, cu); | |
22970 | break; | |
c906108c | 22971 | case DW_TAG_string_type: |
f792889a | 22972 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22973 | break; |
22974 | case DW_TAG_typedef: | |
f792889a | 22975 | this_type = read_typedef (die, cu); |
c906108c | 22976 | break; |
a02abb62 | 22977 | case DW_TAG_subrange_type: |
f792889a | 22978 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22979 | break; |
c906108c | 22980 | case DW_TAG_base_type: |
f792889a | 22981 | this_type = read_base_type (die, cu); |
c906108c | 22982 | break; |
81a17f79 | 22983 | case DW_TAG_unspecified_type: |
f792889a | 22984 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22985 | break; |
0114d602 DJ |
22986 | case DW_TAG_namespace: |
22987 | this_type = read_namespace_type (die, cu); | |
22988 | break; | |
f55ee35c JK |
22989 | case DW_TAG_module: |
22990 | this_type = read_module_type (die, cu); | |
22991 | break; | |
a2c2acaf MW |
22992 | case DW_TAG_atomic_type: |
22993 | this_type = read_tag_atomic_type (die, cu); | |
22994 | break; | |
c906108c | 22995 | default: |
b98664d3 | 22996 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22997 | dwarf_tag_name (die->tag)); |
c906108c SS |
22998 | break; |
22999 | } | |
63d06c5c | 23000 | |
f792889a | 23001 | return this_type; |
63d06c5c DC |
23002 | } |
23003 | ||
abc72ce4 DE |
23004 | /* See if we can figure out if the class lives in a namespace. We do |
23005 | this by looking for a member function; its demangled name will | |
23006 | contain namespace info, if there is any. | |
23007 | Return the computed name or NULL. | |
23008 | Space for the result is allocated on the objfile's obstack. | |
23009 | This is the full-die version of guess_partial_die_structure_name. | |
23010 | In this case we know DIE has no useful parent. */ | |
23011 | ||
43816ebc | 23012 | static const char * |
abc72ce4 DE |
23013 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
23014 | { | |
23015 | struct die_info *spec_die; | |
23016 | struct dwarf2_cu *spec_cu; | |
23017 | struct die_info *child; | |
5e22e966 | 23018 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
23019 | |
23020 | spec_cu = cu; | |
23021 | spec_die = die_specification (die, &spec_cu); | |
23022 | if (spec_die != NULL) | |
23023 | { | |
23024 | die = spec_die; | |
23025 | cu = spec_cu; | |
23026 | } | |
23027 | ||
23028 | for (child = die->child; | |
23029 | child != NULL; | |
23030 | child = child->sibling) | |
23031 | { | |
23032 | if (child->tag == DW_TAG_subprogram) | |
23033 | { | |
73b9be8b | 23034 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 23035 | |
7d45c7c3 | 23036 | if (linkage_name != NULL) |
abc72ce4 | 23037 | { |
43816ebc | 23038 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 23039 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 23040 | const char *name = NULL; |
abc72ce4 DE |
23041 | |
23042 | if (actual_name != NULL) | |
23043 | { | |
15d034d0 | 23044 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
23045 | |
23046 | if (die_name != NULL | |
43816ebc | 23047 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
23048 | { |
23049 | /* Strip off the class name from the full name. | |
23050 | We want the prefix. */ | |
23051 | int die_name_len = strlen (die_name); | |
43816ebc TT |
23052 | int actual_name_len = strlen (actual_name.get ()); |
23053 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
23054 | |
23055 | /* Test for '::' as a sanity check. */ | |
23056 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 23057 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 23058 | name = obstack_strndup ( |
e3b94546 | 23059 | &objfile->per_bfd->storage_obstack, |
43816ebc | 23060 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
23061 | } |
23062 | } | |
abc72ce4 DE |
23063 | return name; |
23064 | } | |
23065 | } | |
23066 | } | |
23067 | ||
23068 | return NULL; | |
23069 | } | |
23070 | ||
96408a79 SA |
23071 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
23072 | prefix part in such case. See | |
23073 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
23074 | ||
a121b7c1 | 23075 | static const char * |
96408a79 SA |
23076 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
23077 | { | |
23078 | struct attribute *attr; | |
e6a959d6 | 23079 | const char *base; |
96408a79 SA |
23080 | |
23081 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
23082 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
23083 | return NULL; | |
23084 | ||
7d45c7c3 | 23085 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
23086 | return NULL; |
23087 | ||
73b9be8b | 23088 | attr = dw2_linkage_name_attr (die, cu); |
2c830f54 TT |
23089 | const char *attr_name = attr->as_string (); |
23090 | if (attr == NULL || attr_name == NULL) | |
96408a79 SA |
23091 | return NULL; |
23092 | ||
23093 | /* dwarf2_name had to be already called. */ | |
3b64bf15 | 23094 | gdb_assert (attr->canonical_string_p ()); |
96408a79 SA |
23095 | |
23096 | /* Strip the base name, keep any leading namespaces/classes. */ | |
2c830f54 TT |
23097 | base = strrchr (attr_name, ':'); |
23098 | if (base == NULL || base == attr_name || base[-1] != ':') | |
96408a79 SA |
23099 | return ""; |
23100 | ||
5e22e966 | 23101 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 | 23102 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
2c830f54 TT |
23103 | attr_name, |
23104 | &base[-1] - attr_name); | |
96408a79 SA |
23105 | } |
23106 | ||
fdde2d81 | 23107 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 23108 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 23109 | |
0114d602 DJ |
23110 | For example, if we're within the method foo() in the following |
23111 | code: | |
23112 | ||
23113 | namespace N { | |
23114 | class C { | |
23115 | void foo () { | |
23116 | } | |
23117 | }; | |
23118 | } | |
23119 | ||
23120 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 23121 | |
0d5cff50 | 23122 | static const char * |
e142c38c | 23123 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 23124 | { |
976ca316 | 23125 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
23126 | struct die_info *parent, *spec_die; |
23127 | struct dwarf2_cu *spec_cu; | |
23128 | struct type *parent_type; | |
a121b7c1 | 23129 | const char *retval; |
63d06c5c | 23130 | |
9c37b5ae | 23131 | if (cu->language != language_cplus |
c44af4eb TT |
23132 | && cu->language != language_fortran && cu->language != language_d |
23133 | && cu->language != language_rust) | |
0114d602 DJ |
23134 | return ""; |
23135 | ||
96408a79 SA |
23136 | retval = anonymous_struct_prefix (die, cu); |
23137 | if (retval) | |
23138 | return retval; | |
23139 | ||
0114d602 DJ |
23140 | /* We have to be careful in the presence of DW_AT_specification. |
23141 | For example, with GCC 3.4, given the code | |
23142 | ||
23143 | namespace N { | |
23144 | void foo() { | |
23145 | // Definition of N::foo. | |
23146 | } | |
23147 | } | |
23148 | ||
23149 | then we'll have a tree of DIEs like this: | |
23150 | ||
23151 | 1: DW_TAG_compile_unit | |
23152 | 2: DW_TAG_namespace // N | |
23153 | 3: DW_TAG_subprogram // declaration of N::foo | |
23154 | 4: DW_TAG_subprogram // definition of N::foo | |
23155 | DW_AT_specification // refers to die #3 | |
23156 | ||
23157 | Thus, when processing die #4, we have to pretend that we're in | |
23158 | the context of its DW_AT_specification, namely the contex of die | |
23159 | #3. */ | |
23160 | spec_cu = cu; | |
23161 | spec_die = die_specification (die, &spec_cu); | |
23162 | if (spec_die == NULL) | |
23163 | parent = die->parent; | |
23164 | else | |
63d06c5c | 23165 | { |
0114d602 DJ |
23166 | parent = spec_die->parent; |
23167 | cu = spec_cu; | |
63d06c5c | 23168 | } |
0114d602 DJ |
23169 | |
23170 | if (parent == NULL) | |
23171 | return ""; | |
98bfdba5 PA |
23172 | else if (parent->building_fullname) |
23173 | { | |
23174 | const char *name; | |
23175 | const char *parent_name; | |
23176 | ||
23177 | /* It has been seen on RealView 2.2 built binaries, | |
23178 | DW_TAG_template_type_param types actually _defined_ as | |
23179 | children of the parent class: | |
23180 | ||
23181 | enum E {}; | |
23182 | template class <class Enum> Class{}; | |
23183 | Class<enum E> class_e; | |
23184 | ||
dda83cd7 SM |
23185 | 1: DW_TAG_class_type (Class) |
23186 | 2: DW_TAG_enumeration_type (E) | |
23187 | 3: DW_TAG_enumerator (enum1:0) | |
23188 | 3: DW_TAG_enumerator (enum2:1) | |
23189 | ... | |
23190 | 2: DW_TAG_template_type_param | |
23191 | DW_AT_type DW_FORM_ref_udata (E) | |
98bfdba5 PA |
23192 | |
23193 | Besides being broken debug info, it can put GDB into an | |
23194 | infinite loop. Consider: | |
23195 | ||
23196 | When we're building the full name for Class<E>, we'll start | |
23197 | at Class, and go look over its template type parameters, | |
23198 | finding E. We'll then try to build the full name of E, and | |
23199 | reach here. We're now trying to build the full name of E, | |
23200 | and look over the parent DIE for containing scope. In the | |
23201 | broken case, if we followed the parent DIE of E, we'd again | |
23202 | find Class, and once again go look at its template type | |
23203 | arguments, etc., etc. Simply don't consider such parent die | |
23204 | as source-level parent of this die (it can't be, the language | |
23205 | doesn't allow it), and break the loop here. */ | |
23206 | name = dwarf2_name (die, cu); | |
23207 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 23208 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
23209 | name ? name : "<unknown>", |
23210 | parent_name ? parent_name : "<unknown>"); | |
23211 | return ""; | |
23212 | } | |
63d06c5c | 23213 | else |
0114d602 DJ |
23214 | switch (parent->tag) |
23215 | { | |
63d06c5c | 23216 | case DW_TAG_namespace: |
0114d602 | 23217 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
23218 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
23219 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
23220 | Work around this problem here. */ | |
23221 | if (cu->language == language_cplus | |
7d93a1e0 | 23222 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 23223 | return ""; |
0114d602 | 23224 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 23225 | return parent_type->name (); |
63d06c5c | 23226 | case DW_TAG_class_type: |
680b30c7 | 23227 | case DW_TAG_interface_type: |
63d06c5c | 23228 | case DW_TAG_structure_type: |
0114d602 | 23229 | case DW_TAG_union_type: |
f55ee35c | 23230 | case DW_TAG_module: |
0114d602 | 23231 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
23232 | if (parent_type->name () != NULL) |
23233 | return parent_type->name (); | |
0114d602 DJ |
23234 | else |
23235 | /* An anonymous structure is only allowed non-static data | |
23236 | members; no typedefs, no member functions, et cetera. | |
23237 | So it does not need a prefix. */ | |
23238 | return ""; | |
abc72ce4 | 23239 | case DW_TAG_compile_unit: |
95554aad | 23240 | case DW_TAG_partial_unit: |
abc72ce4 DE |
23241 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
23242 | if (cu->language == language_cplus | |
976ca316 | 23243 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
23244 | && die->child != NULL |
23245 | && (die->tag == DW_TAG_class_type | |
23246 | || die->tag == DW_TAG_structure_type | |
23247 | || die->tag == DW_TAG_union_type)) | |
23248 | { | |
43816ebc | 23249 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
23250 | if (name != NULL) |
23251 | return name; | |
23252 | } | |
23253 | return ""; | |
0a4b0913 AB |
23254 | case DW_TAG_subprogram: |
23255 | /* Nested subroutines in Fortran get a prefix with the name | |
23256 | of the parent's subroutine. */ | |
23257 | if (cu->language == language_fortran) | |
23258 | { | |
23259 | if ((die->tag == DW_TAG_subprogram) | |
23260 | && (dwarf2_name (parent, cu) != NULL)) | |
23261 | return dwarf2_name (parent, cu); | |
23262 | } | |
23263 | return determine_prefix (parent, cu); | |
3d567982 TT |
23264 | case DW_TAG_enumeration_type: |
23265 | parent_type = read_type_die (parent, cu); | |
23266 | if (TYPE_DECLARED_CLASS (parent_type)) | |
23267 | { | |
7d93a1e0 SM |
23268 | if (parent_type->name () != NULL) |
23269 | return parent_type->name (); | |
3d567982 TT |
23270 | return ""; |
23271 | } | |
23272 | /* Fall through. */ | |
63d06c5c | 23273 | default: |
8176b9b8 | 23274 | return determine_prefix (parent, cu); |
63d06c5c | 23275 | } |
63d06c5c DC |
23276 | } |
23277 | ||
3e43a32a MS |
23278 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
23279 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
23280 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
23281 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
23282 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 23283 | |
f55ee35c | 23284 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
23285 | |
23286 | static char * | |
f55ee35c | 23287 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
dda83cd7 | 23288 | int physname, struct dwarf2_cu *cu) |
63d06c5c | 23289 | { |
f55ee35c | 23290 | const char *lead = ""; |
5c315b68 | 23291 | const char *sep; |
63d06c5c | 23292 | |
3e43a32a MS |
23293 | if (suffix == NULL || suffix[0] == '\0' |
23294 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 23295 | sep = ""; |
45280282 IB |
23296 | else if (cu->language == language_d) |
23297 | { | |
23298 | /* For D, the 'main' function could be defined in any module, but it | |
23299 | should never be prefixed. */ | |
23300 | if (strcmp (suffix, "D main") == 0) | |
23301 | { | |
23302 | prefix = ""; | |
23303 | sep = ""; | |
23304 | } | |
23305 | else | |
23306 | sep = "."; | |
23307 | } | |
f55ee35c JK |
23308 | else if (cu->language == language_fortran && physname) |
23309 | { | |
23310 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
23311 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
23312 | ||
23313 | lead = "__"; | |
23314 | sep = "_MOD_"; | |
23315 | } | |
987504bb JJ |
23316 | else |
23317 | sep = "::"; | |
63d06c5c | 23318 | |
6dd47d34 DE |
23319 | if (prefix == NULL) |
23320 | prefix = ""; | |
23321 | if (suffix == NULL) | |
23322 | suffix = ""; | |
23323 | ||
987504bb JJ |
23324 | if (obs == NULL) |
23325 | { | |
3e43a32a | 23326 | char *retval |
224c3ddb SM |
23327 | = ((char *) |
23328 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 23329 | |
f55ee35c JK |
23330 | strcpy (retval, lead); |
23331 | strcat (retval, prefix); | |
6dd47d34 DE |
23332 | strcat (retval, sep); |
23333 | strcat (retval, suffix); | |
63d06c5c DC |
23334 | return retval; |
23335 | } | |
987504bb JJ |
23336 | else |
23337 | { | |
23338 | /* We have an obstack. */ | |
f55ee35c | 23339 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 23340 | } |
63d06c5c DC |
23341 | } |
23342 | ||
71c25dea TT |
23343 | /* Get name of a die, return NULL if not found. */ |
23344 | ||
15d034d0 TT |
23345 | static const char * |
23346 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 23347 | struct objfile *objfile) |
71c25dea TT |
23348 | { |
23349 | if (name && cu->language == language_cplus) | |
23350 | { | |
596dc4ad TT |
23351 | gdb::unique_xmalloc_ptr<char> canon_name |
23352 | = cp_canonicalize_string (name); | |
71c25dea | 23353 | |
596dc4ad TT |
23354 | if (canon_name != nullptr) |
23355 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
23356 | } |
23357 | ||
23358 | return name; | |
c906108c SS |
23359 | } |
23360 | ||
96553a0c DE |
23361 | /* Get name of a die, return NULL if not found. |
23362 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 23363 | |
15d034d0 | 23364 | static const char * |
e142c38c | 23365 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
23366 | { |
23367 | struct attribute *attr; | |
5e22e966 | 23368 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 23369 | |
e142c38c | 23370 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2c830f54 TT |
23371 | const char *attr_name = attr == nullptr ? nullptr : attr->as_string (); |
23372 | if (attr_name == nullptr | |
96553a0c | 23373 | && die->tag != DW_TAG_namespace |
53832f31 TT |
23374 | && die->tag != DW_TAG_class_type |
23375 | && die->tag != DW_TAG_interface_type | |
23376 | && die->tag != DW_TAG_structure_type | |
23377 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
23378 | return NULL; |
23379 | ||
23380 | switch (die->tag) | |
23381 | { | |
23382 | case DW_TAG_compile_unit: | |
95554aad | 23383 | case DW_TAG_partial_unit: |
71c25dea TT |
23384 | /* Compilation units have a DW_AT_name that is a filename, not |
23385 | a source language identifier. */ | |
23386 | case DW_TAG_enumeration_type: | |
23387 | case DW_TAG_enumerator: | |
23388 | /* These tags always have simple identifiers already; no need | |
23389 | to canonicalize them. */ | |
2c830f54 | 23390 | return attr_name; |
907af001 | 23391 | |
96553a0c | 23392 | case DW_TAG_namespace: |
2c830f54 TT |
23393 | if (attr_name != nullptr) |
23394 | return attr_name; | |
96553a0c DE |
23395 | return CP_ANONYMOUS_NAMESPACE_STR; |
23396 | ||
907af001 UW |
23397 | case DW_TAG_class_type: |
23398 | case DW_TAG_interface_type: | |
23399 | case DW_TAG_structure_type: | |
23400 | case DW_TAG_union_type: | |
23401 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
23402 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
23403 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
23404 | and GCC 4.4. We work around this problem by ignoring these. */ | |
2c830f54 TT |
23405 | if (attr_name != nullptr |
23406 | && (startswith (attr_name, "._") | |
23407 | || startswith (attr_name, "<anonymous"))) | |
907af001 | 23408 | return NULL; |
53832f31 TT |
23409 | |
23410 | /* GCC might emit a nameless typedef that has a linkage name. See | |
23411 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
2c830f54 | 23412 | if (!attr || attr_name == NULL) |
53832f31 | 23413 | { |
73b9be8b | 23414 | attr = dw2_linkage_name_attr (die, cu); |
95eb9e54 | 23415 | attr_name = attr == nullptr ? nullptr : attr->as_string (); |
2c830f54 | 23416 | if (attr == NULL || attr_name == NULL) |
53832f31 TT |
23417 | return NULL; |
23418 | ||
2c830f54 | 23419 | /* Avoid demangling attr_name the second time on a second |
df5c6c50 | 23420 | call for the same DIE. */ |
3b64bf15 | 23421 | if (!attr->canonical_string_p ()) |
53832f31 | 23422 | { |
43816ebc | 23423 | gdb::unique_xmalloc_ptr<char> demangled |
2c830f54 | 23424 | (gdb_demangle (attr_name, DMGL_TYPES)); |
4f180d53 AT |
23425 | if (demangled == nullptr) |
23426 | return nullptr; | |
43816ebc | 23427 | |
c6481205 | 23428 | attr->set_string_canonical (objfile->intern (demangled.get ())); |
95eb9e54 | 23429 | attr_name = attr->as_string (); |
53832f31 | 23430 | } |
67430cd0 | 23431 | |
2c830f54 TT |
23432 | /* Strip any leading namespaces/classes, keep only the |
23433 | base name. DW_AT_name for named DIEs does not | |
23434 | contain the prefixes. */ | |
23435 | const char *base = strrchr (attr_name, ':'); | |
23436 | if (base && base > attr_name && base[-1] == ':') | |
67430cd0 TT |
23437 | return &base[1]; |
23438 | else | |
2c830f54 | 23439 | return attr_name; |
53832f31 | 23440 | } |
907af001 UW |
23441 | break; |
23442 | ||
71c25dea | 23443 | default: |
907af001 UW |
23444 | break; |
23445 | } | |
23446 | ||
3b64bf15 | 23447 | if (!attr->canonical_string_p ()) |
c6481205 TT |
23448 | attr->set_string_canonical (dwarf2_canonicalize_name (attr_name, cu, |
23449 | objfile)); | |
2c830f54 | 23450 | return attr->as_string (); |
9219021c DC |
23451 | } |
23452 | ||
23453 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
23454 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
23455 | containing the return value on output. */ | |
9219021c DC |
23456 | |
23457 | static struct die_info * | |
f2f0e013 | 23458 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
23459 | { |
23460 | struct attribute *attr; | |
9219021c | 23461 | |
f2f0e013 | 23462 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
23463 | if (attr == NULL) |
23464 | return NULL; | |
23465 | ||
f2f0e013 | 23466 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
23467 | } |
23468 | ||
f9aca02d | 23469 | static void |
d97bc12b | 23470 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23471 | { |
23472 | unsigned int i; | |
23473 | ||
d97bc12b | 23474 | print_spaces (indent, f); |
9d8780f0 | 23475 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23476 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23477 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23478 | |
23479 | if (die->parent != NULL) | |
23480 | { | |
23481 | print_spaces (indent, f); | |
9d8780f0 SM |
23482 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23483 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23484 | } |
23485 | ||
23486 | print_spaces (indent, f); | |
23487 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23488 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23489 | |
d97bc12b DE |
23490 | print_spaces (indent, f); |
23491 | fprintf_unfiltered (f, " attributes:\n"); | |
23492 | ||
c906108c SS |
23493 | for (i = 0; i < die->num_attrs; ++i) |
23494 | { | |
d97bc12b DE |
23495 | print_spaces (indent, f); |
23496 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23497 | dwarf_attr_name (die->attrs[i].name), |
23498 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23499 | |
c906108c SS |
23500 | switch (die->attrs[i].form) |
23501 | { | |
c906108c | 23502 | case DW_FORM_addr: |
336d760d | 23503 | case DW_FORM_addrx: |
3019eac3 | 23504 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23505 | fprintf_unfiltered (f, "address: "); |
36d378cf | 23506 | fputs_filtered (hex_string (die->attrs[i].as_address ()), f); |
c906108c SS |
23507 | break; |
23508 | case DW_FORM_block2: | |
23509 | case DW_FORM_block4: | |
23510 | case DW_FORM_block: | |
23511 | case DW_FORM_block1: | |
56eb65bd | 23512 | fprintf_unfiltered (f, "block: size %s", |
9d2246fc | 23513 | pulongest (die->attrs[i].as_block ()->size)); |
c906108c | 23514 | break; |
2dc7f7b3 | 23515 | case DW_FORM_exprloc: |
56eb65bd | 23516 | fprintf_unfiltered (f, "expression: size %s", |
9d2246fc | 23517 | pulongest (die->attrs[i].as_block ()->size)); |
2dc7f7b3 | 23518 | break; |
0224619f JK |
23519 | case DW_FORM_data16: |
23520 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23521 | break; | |
4568ecf9 DE |
23522 | case DW_FORM_ref_addr: |
23523 | fprintf_unfiltered (f, "ref address: "); | |
529908cb | 23524 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
4568ecf9 | 23525 | break; |
36586728 TT |
23526 | case DW_FORM_GNU_ref_alt: |
23527 | fprintf_unfiltered (f, "alt ref address: "); | |
529908cb | 23528 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
36586728 | 23529 | break; |
10b3939b DJ |
23530 | case DW_FORM_ref1: |
23531 | case DW_FORM_ref2: | |
23532 | case DW_FORM_ref4: | |
4568ecf9 DE |
23533 | case DW_FORM_ref8: |
23534 | case DW_FORM_ref_udata: | |
d97bc12b | 23535 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
529908cb | 23536 | (long) (die->attrs[i].as_unsigned ())); |
10b3939b | 23537 | break; |
c906108c SS |
23538 | case DW_FORM_data1: |
23539 | case DW_FORM_data2: | |
23540 | case DW_FORM_data4: | |
ce5d95e1 | 23541 | case DW_FORM_data8: |
c906108c | 23542 | case DW_FORM_udata: |
43bbcdc2 | 23543 | fprintf_unfiltered (f, "constant: %s", |
529908cb | 23544 | pulongest (die->attrs[i].as_unsigned ())); |
c906108c | 23545 | break; |
2dc7f7b3 TT |
23546 | case DW_FORM_sec_offset: |
23547 | fprintf_unfiltered (f, "section offset: %s", | |
529908cb | 23548 | pulongest (die->attrs[i].as_unsigned ())); |
2dc7f7b3 | 23549 | break; |
55f1336d | 23550 | case DW_FORM_ref_sig8: |
ac9ec31b | 23551 | fprintf_unfiltered (f, "signature: %s", |
630ed6b9 | 23552 | hex_string (die->attrs[i].as_signature ())); |
348e048f | 23553 | break; |
c906108c | 23554 | case DW_FORM_string: |
4bdf3d34 | 23555 | case DW_FORM_strp: |
43988095 | 23556 | case DW_FORM_line_strp: |
cf532bd1 | 23557 | case DW_FORM_strx: |
3019eac3 | 23558 | case DW_FORM_GNU_str_index: |
36586728 | 23559 | case DW_FORM_GNU_strp_alt: |
8285870a | 23560 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c6481205 TT |
23561 | die->attrs[i].as_string () |
23562 | ? die->attrs[i].as_string () : "", | |
23563 | die->attrs[i].canonical_string_p () ? "is" : "not"); | |
c906108c SS |
23564 | break; |
23565 | case DW_FORM_flag: | |
c45bc3f8 | 23566 | if (die->attrs[i].as_boolean ()) |
d97bc12b | 23567 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23568 | else |
d97bc12b | 23569 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23570 | break; |
2dc7f7b3 TT |
23571 | case DW_FORM_flag_present: |
23572 | fprintf_unfiltered (f, "flag: TRUE"); | |
23573 | break; | |
a8329558 | 23574 | case DW_FORM_indirect: |
0963b4bd MS |
23575 | /* The reader will have reduced the indirect form to |
23576 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 23577 | fprintf_unfiltered (f, |
3e43a32a | 23578 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 23579 | break; |
1bc397c5 | 23580 | case DW_FORM_sdata: |
663c44ac JK |
23581 | case DW_FORM_implicit_const: |
23582 | fprintf_unfiltered (f, "constant: %s", | |
1bc397c5 | 23583 | plongest (die->attrs[i].as_signed ())); |
663c44ac | 23584 | break; |
c906108c | 23585 | default: |
d97bc12b | 23586 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23587 | die->attrs[i].form); |
d97bc12b | 23588 | break; |
c906108c | 23589 | } |
d97bc12b | 23590 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23591 | } |
23592 | } | |
23593 | ||
f9aca02d | 23594 | static void |
d97bc12b | 23595 | dump_die_for_error (struct die_info *die) |
c906108c | 23596 | { |
d97bc12b DE |
23597 | dump_die_shallow (gdb_stderr, 0, die); |
23598 | } | |
23599 | ||
23600 | static void | |
23601 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23602 | { | |
23603 | int indent = level * 4; | |
23604 | ||
23605 | gdb_assert (die != NULL); | |
23606 | ||
23607 | if (level >= max_level) | |
23608 | return; | |
23609 | ||
23610 | dump_die_shallow (f, indent, die); | |
23611 | ||
23612 | if (die->child != NULL) | |
c906108c | 23613 | { |
d97bc12b DE |
23614 | print_spaces (indent, f); |
23615 | fprintf_unfiltered (f, " Children:"); | |
23616 | if (level + 1 < max_level) | |
23617 | { | |
23618 | fprintf_unfiltered (f, "\n"); | |
23619 | dump_die_1 (f, level + 1, max_level, die->child); | |
23620 | } | |
23621 | else | |
23622 | { | |
3e43a32a MS |
23623 | fprintf_unfiltered (f, |
23624 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23625 | } |
23626 | } | |
23627 | ||
23628 | if (die->sibling != NULL && level > 0) | |
23629 | { | |
23630 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23631 | } |
23632 | } | |
23633 | ||
d97bc12b DE |
23634 | /* This is called from the pdie macro in gdbinit.in. |
23635 | It's not static so gcc will keep a copy callable from gdb. */ | |
23636 | ||
23637 | void | |
23638 | dump_die (struct die_info *die, int max_level) | |
23639 | { | |
23640 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23641 | } | |
23642 | ||
f9aca02d | 23643 | static void |
51545339 | 23644 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23645 | { |
51545339 | 23646 | void **slot; |
c906108c | 23647 | |
9c541725 PA |
23648 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23649 | to_underlying (die->sect_off), | |
b64f50a1 | 23650 | INSERT); |
51545339 DJ |
23651 | |
23652 | *slot = die; | |
c906108c SS |
23653 | } |
23654 | ||
348e048f DE |
23655 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23656 | On entry *REF_CU is the CU of SRC_DIE. | |
23657 | On exit *REF_CU is the CU of the result. */ | |
23658 | ||
23659 | static struct die_info * | |
ff39bb5e | 23660 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23661 | struct dwarf2_cu **ref_cu) |
23662 | { | |
23663 | struct die_info *die; | |
23664 | ||
cd6c91b4 | 23665 | if (attr->form_is_ref ()) |
348e048f | 23666 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23667 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23668 | die = follow_die_sig (src_die, attr, ref_cu); |
23669 | else | |
23670 | { | |
23671 | dump_die_for_error (src_die); | |
23672 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 23673 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
23674 | } |
23675 | ||
23676 | return die; | |
03dd20cc DJ |
23677 | } |
23678 | ||
5c631832 | 23679 | /* Follow reference OFFSET. |
673bfd45 DE |
23680 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23681 | On exit *REF_CU is the CU of the result. | |
23682 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23683 | |
f9aca02d | 23684 | static struct die_info * |
9c541725 | 23685 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23686 | struct dwarf2_cu **ref_cu) |
c906108c | 23687 | { |
10b3939b | 23688 | struct die_info temp_die; |
f2f0e013 | 23689 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 23690 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 23691 | |
348e048f DE |
23692 | gdb_assert (cu->per_cu != NULL); |
23693 | ||
98bfdba5 PA |
23694 | target_cu = cu; |
23695 | ||
17e593e9 SM |
23696 | dwarf_read_debug_printf_v ("source CU offset: %s, target offset: %s, " |
23697 | "source CU contains target offset: %d", | |
23698 | sect_offset_str (cu->per_cu->sect_off), | |
23699 | sect_offset_str (sect_off), | |
23700 | cu->header.offset_in_cu_p (sect_off)); | |
23701 | ||
3019eac3 | 23702 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23703 | { |
23704 | /* .debug_types CUs cannot reference anything outside their CU. | |
23705 | If they need to, they have to reference a signatured type via | |
55f1336d | 23706 | DW_FORM_ref_sig8. */ |
4057dfde | 23707 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 23708 | return NULL; |
348e048f | 23709 | } |
36586728 | 23710 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 23711 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
23712 | { |
23713 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23714 | |
9c541725 | 23715 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 23716 | per_objfile); |
03dd20cc | 23717 | |
17e593e9 SM |
23718 | dwarf_read_debug_printf_v ("target CU offset: %s, " |
23719 | "target CU DIEs loaded: %d", | |
23720 | sect_offset_str (per_cu->sect_off), | |
23721 | per_objfile->get_cu (per_cu) != nullptr); | |
23722 | ||
616c069a SM |
23723 | /* If necessary, add it to the queue and load its DIEs. |
23724 | ||
23725 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, | |
23726 | it doesn't mean they are currently loaded. Since we require them | |
23727 | to be loaded, we must check for ourselves. */ | |
23728 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language) | |
23729 | || per_objfile->get_cu (per_cu) == nullptr) | |
4a636814 SM |
23730 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
23731 | false, cu->language); | |
03dd20cc | 23732 | |
976ca316 | 23733 | target_cu = per_objfile->get_cu (per_cu); |
616c069a | 23734 | gdb_assert (target_cu != nullptr); |
10b3939b | 23735 | } |
98bfdba5 PA |
23736 | else if (cu->dies == NULL) |
23737 | { | |
23738 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 | 23739 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
4a636814 SM |
23740 | load_full_comp_unit (cu->per_cu, per_objfile, cu, false, |
23741 | language_minimal); | |
98bfdba5 | 23742 | } |
c906108c | 23743 | |
f2f0e013 | 23744 | *ref_cu = target_cu; |
9c541725 | 23745 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
23746 | |
23747 | if (target_cu != cu) | |
23748 | target_cu->ancestor = cu; | |
23749 | ||
9a3c8263 | 23750 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23751 | &temp_die, |
23752 | to_underlying (sect_off)); | |
5c631832 | 23753 | } |
10b3939b | 23754 | |
5c631832 JK |
23755 | /* Follow reference attribute ATTR of SRC_DIE. |
23756 | On entry *REF_CU is the CU of SRC_DIE. | |
23757 | On exit *REF_CU is the CU of the result. */ | |
23758 | ||
23759 | static struct die_info * | |
ff39bb5e | 23760 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23761 | struct dwarf2_cu **ref_cu) |
23762 | { | |
0826b30a | 23763 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
23764 | struct dwarf2_cu *cu = *ref_cu; |
23765 | struct die_info *die; | |
23766 | ||
9c541725 | 23767 | die = follow_die_offset (sect_off, |
36586728 TT |
23768 | (attr->form == DW_FORM_GNU_ref_alt |
23769 | || cu->per_cu->is_dwz), | |
23770 | ref_cu); | |
5c631832 | 23771 | if (!die) |
9d8780f0 SM |
23772 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23773 | "at %s [in module %s]"), | |
23774 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23775 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 23776 | |
5c631832 JK |
23777 | return die; |
23778 | } | |
23779 | ||
d4c9a4f8 | 23780 | /* See read.h. */ |
5c631832 JK |
23781 | |
23782 | struct dwarf2_locexpr_baton | |
9c541725 | 23783 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 23784 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23785 | dwarf2_per_objfile *per_objfile, |
041d9819 SM |
23786 | gdb::function_view<CORE_ADDR ()> get_frame_pc, |
23787 | bool resolve_abstract_p) | |
5c631832 | 23788 | { |
5c631832 JK |
23789 | struct die_info *die; |
23790 | struct attribute *attr; | |
23791 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 23792 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 23793 | |
976ca316 | 23794 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 23795 | if (cu == nullptr) |
976ca316 | 23796 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
23797 | |
23798 | if (cu == nullptr) | |
cc12ce38 DE |
23799 | { |
23800 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23801 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23802 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23803 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23804 | } |
918dd910 | 23805 | |
9c541725 | 23806 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23807 | if (!die) |
9d8780f0 SM |
23808 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23809 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23810 | |
23811 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23812 | if (!attr && resolve_abstract_p |
976ca316 SM |
23813 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
23814 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 | 23815 | { |
041d9819 | 23816 | CORE_ADDR pc = get_frame_pc (); |
b3b3bada | 23817 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 23818 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 23819 | |
3360b6e7 | 23820 | for (const auto &cand_off |
976ca316 | 23821 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 23822 | { |
3360b6e7 TV |
23823 | struct dwarf2_cu *cand_cu = cu; |
23824 | struct die_info *cand | |
23825 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23826 | if (!cand | |
23827 | || !cand->parent | |
e4a62c65 TV |
23828 | || cand->parent->tag != DW_TAG_subprogram) |
23829 | continue; | |
23830 | ||
23831 | CORE_ADDR pc_low, pc_high; | |
23832 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23833 | if (pc_low == ((CORE_ADDR) -1)) |
23834 | continue; | |
23835 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23836 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23837 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23838 | continue; |
23839 | ||
23840 | die = cand; | |
23841 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23842 | break; | |
23843 | } | |
23844 | } | |
23845 | ||
5c631832 JK |
23846 | if (!attr) |
23847 | { | |
e103e986 JK |
23848 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23849 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23850 | |
e103e986 | 23851 | retval.data = NULL; |
5c631832 JK |
23852 | retval.size = 0; |
23853 | } | |
cd6c91b4 | 23854 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23855 | { |
23856 | struct dwarf2_loclist_baton loclist_baton; | |
041d9819 | 23857 | CORE_ADDR pc = get_frame_pc (); |
8cf6f0b1 TT |
23858 | size_t size; |
23859 | ||
23860 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23861 | ||
23862 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23863 | &size, pc); | |
23864 | retval.size = size; | |
23865 | } | |
5c631832 JK |
23866 | else |
23867 | { | |
4fc6c0d5 | 23868 | if (!attr->form_is_block ()) |
9d8780f0 | 23869 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23870 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23871 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 | 23872 | |
9d2246fc TT |
23873 | struct dwarf_block *block = attr->as_block (); |
23874 | retval.data = block->data; | |
23875 | retval.size = block->size; | |
5c631832 | 23876 | } |
976ca316 | 23877 | retval.per_objfile = per_objfile; |
5c631832 | 23878 | retval.per_cu = cu->per_cu; |
918dd910 | 23879 | |
976ca316 | 23880 | per_objfile->age_comp_units (); |
918dd910 | 23881 | |
5c631832 | 23882 | return retval; |
348e048f DE |
23883 | } |
23884 | ||
d4c9a4f8 | 23885 | /* See read.h. */ |
8b9737bf TT |
23886 | |
23887 | struct dwarf2_locexpr_baton | |
23888 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 23889 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23890 | dwarf2_per_objfile *per_objfile, |
041d9819 | 23891 | gdb::function_view<CORE_ADDR ()> get_frame_pc) |
8b9737bf | 23892 | { |
9c541725 | 23893 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23894 | |
14095eb3 | 23895 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
041d9819 | 23896 | get_frame_pc); |
8b9737bf TT |
23897 | } |
23898 | ||
b6807d98 TT |
23899 | /* Write a constant of a given type as target-ordered bytes into |
23900 | OBSTACK. */ | |
23901 | ||
23902 | static const gdb_byte * | |
23903 | write_constant_as_bytes (struct obstack *obstack, | |
23904 | enum bfd_endian byte_order, | |
23905 | struct type *type, | |
23906 | ULONGEST value, | |
23907 | LONGEST *len) | |
23908 | { | |
23909 | gdb_byte *result; | |
23910 | ||
23911 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23912 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23913 | store_unsigned_integer (result, *len, byte_order, value); |
23914 | ||
23915 | return result; | |
23916 | } | |
23917 | ||
d4c9a4f8 | 23918 | /* See read.h. */ |
b6807d98 TT |
23919 | |
23920 | const gdb_byte * | |
9c541725 | 23921 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 23922 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23923 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 23924 | obstack *obstack, |
b6807d98 TT |
23925 | LONGEST *len) |
23926 | { | |
b6807d98 TT |
23927 | struct die_info *die; |
23928 | struct attribute *attr; | |
23929 | const gdb_byte *result = NULL; | |
23930 | struct type *type; | |
23931 | LONGEST value; | |
23932 | enum bfd_endian byte_order; | |
14095eb3 | 23933 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 23934 | |
7188ed02 | 23935 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23936 | if (cu == nullptr) |
23937 | cu = load_cu (per_cu, per_objfile, false); | |
23938 | ||
23939 | if (cu == nullptr) | |
cc12ce38 DE |
23940 | { |
23941 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23942 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23943 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23944 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23945 | } |
b6807d98 | 23946 | |
9c541725 | 23947 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23948 | if (!die) |
9d8780f0 SM |
23949 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23950 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23951 | |
23952 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23953 | if (attr == NULL) | |
23954 | return NULL; | |
23955 | ||
e3b94546 | 23956 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23957 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23958 | ||
23959 | switch (attr->form) | |
23960 | { | |
23961 | case DW_FORM_addr: | |
336d760d | 23962 | case DW_FORM_addrx: |
b6807d98 TT |
23963 | case DW_FORM_GNU_addr_index: |
23964 | { | |
23965 | gdb_byte *tem; | |
23966 | ||
23967 | *len = cu->header.addr_size; | |
224c3ddb | 23968 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
36d378cf | 23969 | store_unsigned_integer (tem, *len, byte_order, attr->as_address ()); |
b6807d98 TT |
23970 | result = tem; |
23971 | } | |
23972 | break; | |
23973 | case DW_FORM_string: | |
23974 | case DW_FORM_strp: | |
cf532bd1 | 23975 | case DW_FORM_strx: |
b6807d98 TT |
23976 | case DW_FORM_GNU_str_index: |
23977 | case DW_FORM_GNU_strp_alt: | |
c6481205 | 23978 | /* The string is already allocated on the objfile obstack, point |
b6807d98 | 23979 | directly to it. */ |
2c830f54 TT |
23980 | { |
23981 | const char *attr_name = attr->as_string (); | |
23982 | result = (const gdb_byte *) attr_name; | |
23983 | *len = strlen (attr_name); | |
23984 | } | |
b6807d98 TT |
23985 | break; |
23986 | case DW_FORM_block1: | |
23987 | case DW_FORM_block2: | |
23988 | case DW_FORM_block4: | |
23989 | case DW_FORM_block: | |
23990 | case DW_FORM_exprloc: | |
0224619f | 23991 | case DW_FORM_data16: |
9d2246fc TT |
23992 | { |
23993 | struct dwarf_block *block = attr->as_block (); | |
23994 | result = block->data; | |
23995 | *len = block->size; | |
23996 | } | |
b6807d98 TT |
23997 | break; |
23998 | ||
23999 | /* The DW_AT_const_value attributes are supposed to carry the | |
24000 | symbol's value "represented as it would be on the target | |
24001 | architecture." By the time we get here, it's already been | |
24002 | converted to host endianness, so we just need to sign- or | |
24003 | zero-extend it as appropriate. */ | |
24004 | case DW_FORM_data1: | |
24005 | type = die_type (die, cu); | |
24006 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
24007 | if (result == NULL) | |
24008 | result = write_constant_as_bytes (obstack, byte_order, | |
24009 | type, value, len); | |
24010 | break; | |
24011 | case DW_FORM_data2: | |
24012 | type = die_type (die, cu); | |
24013 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
24014 | if (result == NULL) | |
24015 | result = write_constant_as_bytes (obstack, byte_order, | |
24016 | type, value, len); | |
24017 | break; | |
24018 | case DW_FORM_data4: | |
24019 | type = die_type (die, cu); | |
24020 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
24021 | if (result == NULL) | |
24022 | result = write_constant_as_bytes (obstack, byte_order, | |
24023 | type, value, len); | |
24024 | break; | |
24025 | case DW_FORM_data8: | |
24026 | type = die_type (die, cu); | |
24027 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
24028 | if (result == NULL) | |
24029 | result = write_constant_as_bytes (obstack, byte_order, | |
24030 | type, value, len); | |
24031 | break; | |
24032 | ||
24033 | case DW_FORM_sdata: | |
663c44ac | 24034 | case DW_FORM_implicit_const: |
b6807d98 TT |
24035 | type = die_type (die, cu); |
24036 | result = write_constant_as_bytes (obstack, byte_order, | |
1bc397c5 | 24037 | type, attr->as_signed (), len); |
b6807d98 TT |
24038 | break; |
24039 | ||
24040 | case DW_FORM_udata: | |
24041 | type = die_type (die, cu); | |
24042 | result = write_constant_as_bytes (obstack, byte_order, | |
529908cb | 24043 | type, attr->as_unsigned (), len); |
b6807d98 TT |
24044 | break; |
24045 | ||
24046 | default: | |
b98664d3 | 24047 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
24048 | dwarf_form_name (attr->form)); |
24049 | break; | |
24050 | } | |
24051 | ||
24052 | return result; | |
24053 | } | |
24054 | ||
d4c9a4f8 | 24055 | /* See read.h. */ |
7942e96e AA |
24056 | |
24057 | struct type * | |
9c541725 | 24058 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
24059 | dwarf2_per_cu_data *per_cu, |
24060 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 24061 | { |
7942e96e AA |
24062 | struct die_info *die; |
24063 | ||
7188ed02 | 24064 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
24065 | if (cu == nullptr) |
24066 | cu = load_cu (per_cu, per_objfile, false); | |
24067 | ||
24068 | if (cu == nullptr) | |
24069 | return nullptr; | |
7942e96e | 24070 | |
9c541725 | 24071 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
24072 | if (!die) |
24073 | return NULL; | |
24074 | ||
24075 | return die_type (die, cu); | |
24076 | } | |
24077 | ||
8cb5117c | 24078 | /* See read.h. */ |
8a9b8146 TT |
24079 | |
24080 | struct type * | |
b64f50a1 | 24081 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
24082 | dwarf2_per_cu_data *per_cu, |
24083 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 24084 | { |
9c541725 | 24085 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 24086 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
24087 | } |
24088 | ||
ac9ec31b | 24089 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 24090 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
24091 | On exit *REF_CU is the CU of the result. |
24092 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
24093 | |
24094 | static struct die_info * | |
ac9ec31b DE |
24095 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
24096 | struct dwarf2_cu **ref_cu) | |
348e048f | 24097 | { |
348e048f | 24098 | struct die_info temp_die; |
c24bdb02 | 24099 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 24100 | struct die_info *die; |
976ca316 | 24101 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 24102 | |
348e048f | 24103 | |
ac9ec31b DE |
24104 | /* While it might be nice to assert sig_type->type == NULL here, |
24105 | we can get here for DW_AT_imported_declaration where we need | |
24106 | the DIE not the type. */ | |
348e048f | 24107 | |
616c069a | 24108 | /* If necessary, add it to the queue and load its DIEs. |
348e048f | 24109 | |
616c069a SM |
24110 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, |
24111 | it doesn't mean they are currently loaded. Since we require them | |
24112 | to be loaded, we must check for ourselves. */ | |
976ca316 | 24113 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, per_objfile, |
616c069a SM |
24114 | language_minimal) |
24115 | || per_objfile->get_cu (&sig_type->per_cu) == nullptr) | |
976ca316 | 24116 | read_signatured_type (sig_type, per_objfile); |
348e048f | 24117 | |
976ca316 | 24118 | sig_cu = per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 24119 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
24120 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
24121 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 24122 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 24123 | to_underlying (temp_die.sect_off)); |
348e048f DE |
24124 | if (die) |
24125 | { | |
796a7ff8 DE |
24126 | /* For .gdb_index version 7 keep track of included TUs. |
24127 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
24128 | if (per_objfile->per_bfd->index_table != NULL |
24129 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 24130 | { |
ae640021 | 24131 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
24132 | } |
24133 | ||
348e048f | 24134 | *ref_cu = sig_cu; |
c24bdb02 KS |
24135 | if (sig_cu != cu) |
24136 | sig_cu->ancestor = cu; | |
24137 | ||
348e048f DE |
24138 | return die; |
24139 | } | |
24140 | ||
ac9ec31b DE |
24141 | return NULL; |
24142 | } | |
24143 | ||
24144 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
24145 | On entry *REF_CU is the CU of SRC_DIE. | |
24146 | On exit *REF_CU is the CU of the result. | |
24147 | The result is the DIE of the type. | |
24148 | If the referenced type cannot be found an error is thrown. */ | |
24149 | ||
24150 | static struct die_info * | |
ff39bb5e | 24151 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
24152 | struct dwarf2_cu **ref_cu) |
24153 | { | |
630ed6b9 | 24154 | ULONGEST signature = attr->as_signature (); |
ac9ec31b DE |
24155 | struct signatured_type *sig_type; |
24156 | struct die_info *die; | |
24157 | ||
24158 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
24159 | ||
a2ce51a0 | 24160 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
24161 | /* sig_type will be NULL if the signatured type is missing from |
24162 | the debug info. */ | |
24163 | if (sig_type == NULL) | |
24164 | { | |
24165 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
dda83cd7 SM |
24166 | " from DIE at %s [in module %s]"), |
24167 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 24168 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
24169 | } |
24170 | ||
24171 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
24172 | if (die == NULL) | |
24173 | { | |
24174 | dump_die_for_error (src_die); | |
24175 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
24176 | " from DIE at %s [in module %s]"), |
24177 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 24178 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
24179 | } |
24180 | ||
24181 | return die; | |
24182 | } | |
24183 | ||
24184 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
24185 | reading in and processing the type unit if necessary. */ | |
24186 | ||
24187 | static struct type * | |
24188 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
24189 | struct dwarf2_cu *cu) | |
24190 | { | |
976ca316 | 24191 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
24192 | struct signatured_type *sig_type; |
24193 | struct dwarf2_cu *type_cu; | |
24194 | struct die_info *type_die; | |
24195 | struct type *type; | |
24196 | ||
a2ce51a0 | 24197 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
24198 | /* sig_type will be NULL if the signatured type is missing from |
24199 | the debug info. */ | |
24200 | if (sig_type == NULL) | |
24201 | { | |
b98664d3 | 24202 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
24203 | " from DIE at %s [in module %s]"), |
24204 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24205 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24206 | return build_error_marker_type (cu, die); |
24207 | } | |
24208 | ||
24209 | /* If we already know the type we're done. */ | |
976ca316 | 24210 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
24211 | if (type != nullptr) |
24212 | return type; | |
ac9ec31b DE |
24213 | |
24214 | type_cu = cu; | |
24215 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
24216 | if (type_die != NULL) | |
24217 | { | |
24218 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
24219 | is created. This is important, for example, because for c++ classes | |
24220 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
24221 | type = read_type_die (type_die, type_cu); | |
24222 | if (type == NULL) | |
24223 | { | |
b98664d3 | 24224 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
24225 | " referenced from DIE at %s [in module %s]"), |
24226 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24227 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24228 | type = build_error_marker_type (cu, die); |
24229 | } | |
24230 | } | |
24231 | else | |
24232 | { | |
b98664d3 | 24233 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
24234 | " from DIE at %s [in module %s]"), |
24235 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24236 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24237 | type = build_error_marker_type (cu, die); |
24238 | } | |
e286671b | 24239 | |
976ca316 | 24240 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
24241 | |
24242 | return type; | |
24243 | } | |
24244 | ||
24245 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
24246 | reading in and processing the type unit if necessary. */ | |
24247 | ||
24248 | static struct type * | |
ff39bb5e | 24249 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 24250 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
24251 | { |
24252 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 24253 | if (attr->form_is_ref ()) |
ac9ec31b DE |
24254 | { |
24255 | struct dwarf2_cu *type_cu = cu; | |
24256 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
24257 | ||
24258 | return read_type_die (type_die, type_cu); | |
24259 | } | |
24260 | else if (attr->form == DW_FORM_ref_sig8) | |
24261 | { | |
630ed6b9 | 24262 | return get_signatured_type (die, attr->as_signature (), cu); |
ac9ec31b DE |
24263 | } |
24264 | else | |
24265 | { | |
976ca316 | 24266 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24267 | |
b98664d3 | 24268 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
24269 | " at %s [in module %s]"), |
24270 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 24271 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24272 | return build_error_marker_type (cu, die); |
24273 | } | |
348e048f DE |
24274 | } |
24275 | ||
e5fe5e75 | 24276 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
24277 | |
24278 | static void | |
ab432490 SM |
24279 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
24280 | dwarf2_per_objfile *per_objfile) | |
348e048f | 24281 | { |
52dc124a | 24282 | struct signatured_type *sig_type; |
348e048f | 24283 | |
f4dc4d17 | 24284 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 24285 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 24286 | |
6721b2ec DE |
24287 | /* We have the per_cu, but we need the signatured_type. |
24288 | Fortunately this is an easy translation. */ | |
24289 | gdb_assert (per_cu->is_debug_types); | |
24290 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 24291 | |
7188ed02 | 24292 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24293 | |
ab432490 | 24294 | read_signatured_type (sig_type, per_objfile); |
348e048f | 24295 | |
7188ed02 | 24296 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
24297 | } |
24298 | ||
3019eac3 DE |
24299 | /* Read in a signatured type and build its CU and DIEs. |
24300 | If the type is a stub for the real type in a DWO file, | |
24301 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
24302 | |
24303 | static void | |
ab432490 SM |
24304 | read_signatured_type (signatured_type *sig_type, |
24305 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
24306 | { |
24307 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 24308 | |
3019eac3 | 24309 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 24310 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24311 | |
2e671100 | 24312 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
24313 | |
24314 | if (!reader.dummy_p) | |
24315 | { | |
24316 | struct dwarf2_cu *cu = reader.cu; | |
24317 | const gdb_byte *info_ptr = reader.info_ptr; | |
24318 | ||
24319 | gdb_assert (cu->die_hash == NULL); | |
24320 | cu->die_hash = | |
24321 | htab_create_alloc_ex (cu->header.length / 12, | |
24322 | die_hash, | |
24323 | die_eq, | |
24324 | NULL, | |
24325 | &cu->comp_unit_obstack, | |
24326 | hashtab_obstack_allocate, | |
24327 | dummy_obstack_deallocate); | |
24328 | ||
3e225074 | 24329 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
24330 | reader.comp_unit_die->child |
24331 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
24332 | reader.comp_unit_die); | |
24333 | cu->dies = reader.comp_unit_die; | |
24334 | /* comp_unit_die is not stored in die_hash, no need. */ | |
24335 | ||
24336 | /* We try not to read any attributes in this function, because | |
24337 | not all CUs needed for references have been loaded yet, and | |
24338 | symbol table processing isn't initialized. But we have to | |
24339 | set the CU language, or we won't be able to build types | |
24340 | correctly. Similarly, if we do not read the producer, we can | |
24341 | not apply producer-specific interpretation. */ | |
24342 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
24343 | |
24344 | reader.keep (); | |
c0ab21c2 TT |
24345 | } |
24346 | ||
7ee85ab1 | 24347 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
24348 | } |
24349 | ||
c906108c SS |
24350 | /* Decode simple location descriptions. |
24351 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
24352 | the location and return the value. If COMPUTED is non-null, it is |
24353 | set to true to indicate that decoding was successful, and false | |
24354 | otherwise. If COMPUTED is null, then this function may emit a | |
24355 | complaint. */ | |
c906108c SS |
24356 | |
24357 | static CORE_ADDR | |
7d79de9a | 24358 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 24359 | { |
5e22e966 | 24360 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
24361 | size_t i; |
24362 | size_t size = blk->size; | |
d521ce57 | 24363 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
24364 | CORE_ADDR stack[64]; |
24365 | int stacki; | |
24366 | unsigned int bytes_read, unsnd; | |
24367 | gdb_byte op; | |
c906108c | 24368 | |
7d79de9a TT |
24369 | if (computed != nullptr) |
24370 | *computed = false; | |
24371 | ||
21ae7a4d JK |
24372 | i = 0; |
24373 | stacki = 0; | |
24374 | stack[stacki] = 0; | |
24375 | stack[++stacki] = 0; | |
24376 | ||
24377 | while (i < size) | |
24378 | { | |
24379 | op = data[i++]; | |
24380 | switch (op) | |
24381 | { | |
24382 | case DW_OP_lit0: | |
24383 | case DW_OP_lit1: | |
24384 | case DW_OP_lit2: | |
24385 | case DW_OP_lit3: | |
24386 | case DW_OP_lit4: | |
24387 | case DW_OP_lit5: | |
24388 | case DW_OP_lit6: | |
24389 | case DW_OP_lit7: | |
24390 | case DW_OP_lit8: | |
24391 | case DW_OP_lit9: | |
24392 | case DW_OP_lit10: | |
24393 | case DW_OP_lit11: | |
24394 | case DW_OP_lit12: | |
24395 | case DW_OP_lit13: | |
24396 | case DW_OP_lit14: | |
24397 | case DW_OP_lit15: | |
24398 | case DW_OP_lit16: | |
24399 | case DW_OP_lit17: | |
24400 | case DW_OP_lit18: | |
24401 | case DW_OP_lit19: | |
24402 | case DW_OP_lit20: | |
24403 | case DW_OP_lit21: | |
24404 | case DW_OP_lit22: | |
24405 | case DW_OP_lit23: | |
24406 | case DW_OP_lit24: | |
24407 | case DW_OP_lit25: | |
24408 | case DW_OP_lit26: | |
24409 | case DW_OP_lit27: | |
24410 | case DW_OP_lit28: | |
24411 | case DW_OP_lit29: | |
24412 | case DW_OP_lit30: | |
24413 | case DW_OP_lit31: | |
24414 | stack[++stacki] = op - DW_OP_lit0; | |
24415 | break; | |
f1bea926 | 24416 | |
21ae7a4d JK |
24417 | case DW_OP_reg0: |
24418 | case DW_OP_reg1: | |
24419 | case DW_OP_reg2: | |
24420 | case DW_OP_reg3: | |
24421 | case DW_OP_reg4: | |
24422 | case DW_OP_reg5: | |
24423 | case DW_OP_reg6: | |
24424 | case DW_OP_reg7: | |
24425 | case DW_OP_reg8: | |
24426 | case DW_OP_reg9: | |
24427 | case DW_OP_reg10: | |
24428 | case DW_OP_reg11: | |
24429 | case DW_OP_reg12: | |
24430 | case DW_OP_reg13: | |
24431 | case DW_OP_reg14: | |
24432 | case DW_OP_reg15: | |
24433 | case DW_OP_reg16: | |
24434 | case DW_OP_reg17: | |
24435 | case DW_OP_reg18: | |
24436 | case DW_OP_reg19: | |
24437 | case DW_OP_reg20: | |
24438 | case DW_OP_reg21: | |
24439 | case DW_OP_reg22: | |
24440 | case DW_OP_reg23: | |
24441 | case DW_OP_reg24: | |
24442 | case DW_OP_reg25: | |
24443 | case DW_OP_reg26: | |
24444 | case DW_OP_reg27: | |
24445 | case DW_OP_reg28: | |
24446 | case DW_OP_reg29: | |
24447 | case DW_OP_reg30: | |
24448 | case DW_OP_reg31: | |
24449 | stack[++stacki] = op - DW_OP_reg0; | |
24450 | if (i < size) | |
7d79de9a TT |
24451 | { |
24452 | if (computed == nullptr) | |
24453 | dwarf2_complex_location_expr_complaint (); | |
24454 | else | |
24455 | return 0; | |
24456 | } | |
21ae7a4d | 24457 | break; |
c906108c | 24458 | |
21ae7a4d JK |
24459 | case DW_OP_regx: |
24460 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24461 | i += bytes_read; | |
24462 | stack[++stacki] = unsnd; | |
24463 | if (i < size) | |
7d79de9a TT |
24464 | { |
24465 | if (computed == nullptr) | |
24466 | dwarf2_complex_location_expr_complaint (); | |
24467 | else | |
24468 | return 0; | |
24469 | } | |
21ae7a4d | 24470 | break; |
c906108c | 24471 | |
21ae7a4d | 24472 | case DW_OP_addr: |
c8a7a66f TT |
24473 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
24474 | &bytes_read); | |
21ae7a4d JK |
24475 | i += bytes_read; |
24476 | break; | |
d53d4ac5 | 24477 | |
21ae7a4d JK |
24478 | case DW_OP_const1u: |
24479 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24480 | i += 1; | |
24481 | break; | |
24482 | ||
24483 | case DW_OP_const1s: | |
24484 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24485 | i += 1; | |
24486 | break; | |
24487 | ||
24488 | case DW_OP_const2u: | |
24489 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24490 | i += 2; | |
24491 | break; | |
24492 | ||
24493 | case DW_OP_const2s: | |
24494 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24495 | i += 2; | |
24496 | break; | |
d53d4ac5 | 24497 | |
21ae7a4d JK |
24498 | case DW_OP_const4u: |
24499 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24500 | i += 4; | |
24501 | break; | |
24502 | ||
24503 | case DW_OP_const4s: | |
24504 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24505 | i += 4; | |
24506 | break; | |
24507 | ||
585861ea JK |
24508 | case DW_OP_const8u: |
24509 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24510 | i += 8; | |
24511 | break; | |
24512 | ||
21ae7a4d JK |
24513 | case DW_OP_constu: |
24514 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24515 | &bytes_read); | |
24516 | i += bytes_read; | |
24517 | break; | |
24518 | ||
24519 | case DW_OP_consts: | |
24520 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24521 | i += bytes_read; | |
24522 | break; | |
24523 | ||
24524 | case DW_OP_dup: | |
24525 | stack[stacki + 1] = stack[stacki]; | |
24526 | stacki++; | |
24527 | break; | |
24528 | ||
24529 | case DW_OP_plus: | |
24530 | stack[stacki - 1] += stack[stacki]; | |
24531 | stacki--; | |
24532 | break; | |
24533 | ||
24534 | case DW_OP_plus_uconst: | |
24535 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24536 | &bytes_read); | |
24537 | i += bytes_read; | |
24538 | break; | |
24539 | ||
24540 | case DW_OP_minus: | |
24541 | stack[stacki - 1] -= stack[stacki]; | |
24542 | stacki--; | |
24543 | break; | |
24544 | ||
24545 | case DW_OP_deref: | |
24546 | /* If we're not the last op, then we definitely can't encode | |
24547 | this using GDB's address_class enum. This is valid for partial | |
24548 | global symbols, although the variable's address will be bogus | |
24549 | in the psymtab. */ | |
24550 | if (i < size) | |
7d79de9a TT |
24551 | { |
24552 | if (computed == nullptr) | |
24553 | dwarf2_complex_location_expr_complaint (); | |
24554 | else | |
24555 | return 0; | |
24556 | } | |
21ae7a4d JK |
24557 | break; |
24558 | ||
dda83cd7 | 24559 | case DW_OP_GNU_push_tls_address: |
4aa4e28b | 24560 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24561 | /* The top of the stack has the offset from the beginning |
24562 | of the thread control block at which the variable is located. */ | |
24563 | /* Nothing should follow this operator, so the top of stack would | |
24564 | be returned. */ | |
24565 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24566 | address will be bogus in the psymtab. Make it always at least |
24567 | non-zero to not look as a variable garbage collected by linker | |
24568 | which have DW_OP_addr 0. */ | |
21ae7a4d | 24569 | if (i < size) |
7d79de9a TT |
24570 | { |
24571 | if (computed == nullptr) | |
24572 | dwarf2_complex_location_expr_complaint (); | |
24573 | else | |
24574 | return 0; | |
24575 | } | |
585861ea | 24576 | stack[stacki]++; |
dda83cd7 | 24577 | break; |
21ae7a4d JK |
24578 | |
24579 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
24580 | if (computed != nullptr) |
24581 | return 0; | |
21ae7a4d JK |
24582 | break; |
24583 | ||
336d760d | 24584 | case DW_OP_addrx: |
3019eac3 | 24585 | case DW_OP_GNU_addr_index: |
49f6c839 | 24586 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24587 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24588 | &bytes_read); | |
24589 | i += bytes_read; | |
24590 | break; | |
24591 | ||
21ae7a4d | 24592 | default: |
7d79de9a TT |
24593 | if (computed == nullptr) |
24594 | { | |
24595 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 24596 | |
7d79de9a TT |
24597 | if (name) |
24598 | complaint (_("unsupported stack op: '%s'"), | |
24599 | name); | |
24600 | else | |
24601 | complaint (_("unsupported stack op: '%02x'"), | |
24602 | op); | |
24603 | } | |
21ae7a4d JK |
24604 | |
24605 | return (stack[stacki]); | |
d53d4ac5 | 24606 | } |
3c6e0cb3 | 24607 | |
21ae7a4d | 24608 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
dda83cd7 | 24609 | outside of the allocated space. Also enforce minimum>0. */ |
21ae7a4d JK |
24610 | if (stacki >= ARRAY_SIZE (stack) - 1) |
24611 | { | |
7d79de9a TT |
24612 | if (computed == nullptr) |
24613 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
24614 | return 0; |
24615 | } | |
24616 | ||
24617 | if (stacki <= 0) | |
24618 | { | |
7d79de9a TT |
24619 | if (computed == nullptr) |
24620 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
24621 | return 0; |
24622 | } | |
24623 | } | |
7d79de9a TT |
24624 | |
24625 | if (computed != nullptr) | |
24626 | *computed = true; | |
21ae7a4d | 24627 | return (stack[stacki]); |
c906108c SS |
24628 | } |
24629 | ||
24630 | /* memory allocation interface */ | |
24631 | ||
c906108c | 24632 | static struct dwarf_block * |
7b5a2f43 | 24633 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24634 | { |
8d749320 | 24635 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24636 | } |
24637 | ||
c906108c | 24638 | static struct die_info * |
b60c80d6 | 24639 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24640 | { |
24641 | struct die_info *die; | |
b60c80d6 DJ |
24642 | size_t size = sizeof (struct die_info); |
24643 | ||
24644 | if (num_attrs > 1) | |
24645 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24646 | |
b60c80d6 | 24647 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24648 | memset (die, 0, sizeof (struct die_info)); |
24649 | return (die); | |
24650 | } | |
2e276125 JB |
24651 | |
24652 | \f | |
a036ba48 | 24653 | |
c90ec28a | 24654 | /* Macro support. */ |
cf2c3c16 | 24655 | |
9eac9650 TT |
24656 | /* An overload of dwarf_decode_macros that finds the correct section |
24657 | and ensures it is read in before calling the other overload. */ | |
24658 | ||
24659 | static void | |
24660 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
24661 | int section_is_gnu) | |
24662 | { | |
976ca316 SM |
24663 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24664 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 24665 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
24666 | unsigned int offset_size = cu->header.offset_size; |
24667 | struct dwarf2_section_info *section; | |
24668 | const char *section_name; | |
24669 | ||
24670 | if (cu->dwo_unit != nullptr) | |
24671 | { | |
24672 | if (section_is_gnu) | |
24673 | { | |
24674 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24675 | section_name = ".debug_macro.dwo"; | |
24676 | } | |
24677 | else | |
24678 | { | |
24679 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24680 | section_name = ".debug_macinfo.dwo"; | |
24681 | } | |
24682 | } | |
24683 | else | |
24684 | { | |
24685 | if (section_is_gnu) | |
24686 | { | |
976ca316 | 24687 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
24688 | section_name = ".debug_macro"; |
24689 | } | |
24690 | else | |
24691 | { | |
976ca316 | 24692 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
24693 | section_name = ".debug_macinfo"; |
24694 | } | |
24695 | } | |
24696 | ||
24697 | section->read (objfile); | |
24698 | if (section->buffer == nullptr) | |
24699 | { | |
24700 | complaint (_("missing %s section"), section_name); | |
24701 | return; | |
24702 | } | |
24703 | ||
24704 | buildsym_compunit *builder = cu->get_builder (); | |
24705 | ||
048fde1e | 24706 | struct dwarf2_section_info *str_offsets_section; |
24707 | struct dwarf2_section_info *str_section; | |
24708 | ULONGEST str_offsets_base; | |
24709 | ||
24710 | if (cu->dwo_unit != nullptr) | |
24711 | { | |
24712 | str_offsets_section = &cu->dwo_unit->dwo_file | |
24713 | ->sections.str_offsets; | |
24714 | str_section = &cu->dwo_unit->dwo_file->sections.str; | |
24715 | str_offsets_base = cu->header.addr_size; | |
24716 | } | |
24717 | else | |
24718 | { | |
24719 | str_offsets_section = &per_objfile->per_bfd->str_offsets; | |
24720 | str_section = &per_objfile->per_bfd->str; | |
24721 | str_offsets_base = *cu->str_offsets_base; | |
24722 | } | |
24723 | ||
976ca316 | 24724 | dwarf_decode_macros (per_objfile, builder, section, lh, |
048fde1e | 24725 | offset_size, offset, str_section, str_offsets_section, |
24726 | str_offsets_base, section_is_gnu); | |
9eac9650 TT |
24727 | } |
24728 | ||
3019eac3 DE |
24729 | /* Return the .debug_loc section to use for CU. |
24730 | For DWO files use .debug_loc.dwo. */ | |
24731 | ||
24732 | static struct dwarf2_section_info * | |
24733 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24734 | { | |
976ca316 | 24735 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24736 | |
3019eac3 | 24737 | if (cu->dwo_unit) |
43988095 JK |
24738 | { |
24739 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 24740 | |
43988095 JK |
24741 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
24742 | } | |
976ca316 SM |
24743 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
24744 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
24745 | } |
24746 | ||
d0ce17d8 CT |
24747 | /* Return the .debug_rnglists section to use for CU. */ |
24748 | static struct dwarf2_section_info * | |
24749 | cu_debug_rnglists_section (struct dwarf2_cu *cu, dwarf_tag tag) | |
24750 | { | |
24751 | if (cu->header.version < 5) | |
24752 | error (_(".debug_rnglists section cannot be used in DWARF %d"), | |
24753 | cu->header.version); | |
24754 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
24755 | ||
24756 | /* Make sure we read the .debug_rnglists section from the file that | |
24757 | contains the DW_AT_ranges attribute we are reading. Normally that | |
24758 | would be the .dwo file, if there is one. However for DW_TAG_compile_unit | |
24759 | or DW_TAG_skeleton unit, we always want to read from objfile/linked | |
24760 | program. */ | |
24761 | if (cu->dwo_unit != nullptr | |
24762 | && tag != DW_TAG_compile_unit | |
24763 | && tag != DW_TAG_skeleton_unit) | |
24764 | { | |
24765 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24766 | ||
24767 | if (sections->rnglists.size > 0) | |
24768 | return §ions->rnglists; | |
24769 | else | |
24770 | error (_(".debug_rnglists section is missing from .dwo file.")); | |
24771 | } | |
24772 | return &dwarf2_per_objfile->per_bfd->rnglists; | |
24773 | } | |
24774 | ||
8cf6f0b1 TT |
24775 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24776 | ||
24777 | static void | |
24778 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24779 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24780 | const struct attribute *attr) |
8cf6f0b1 | 24781 | { |
976ca316 | 24782 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
24783 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24784 | ||
976ca316 | 24785 | section->read (per_objfile->objfile); |
8cf6f0b1 | 24786 | |
976ca316 | 24787 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
24788 | baton->per_cu = cu->per_cu; |
24789 | gdb_assert (baton->per_cu); | |
24790 | /* We don't know how long the location list is, but make sure we | |
24791 | don't run off the edge of the section. */ | |
d4df075e TT |
24792 | baton->size = section->size - attr->as_unsigned (); |
24793 | baton->data = section->buffer + attr->as_unsigned (); | |
2b24b6e4 TT |
24794 | if (cu->base_address.has_value ()) |
24795 | baton->base_address = *cu->base_address; | |
24796 | else | |
24797 | baton->base_address = 0; | |
f664829e | 24798 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24799 | } |
24800 | ||
4c2df51b | 24801 | static void |
ff39bb5e | 24802 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24803 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24804 | { |
976ca316 SM |
24805 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24806 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 24807 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24808 | |
cd6c91b4 | 24809 | if (attr->form_is_section_offset () |
3019eac3 | 24810 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24811 | the section. If so, fall through to the complaint in the |
24812 | other branch. */ | |
d4df075e | 24813 | && attr->as_unsigned () < section->get_size (objfile)) |
4c2df51b | 24814 | { |
0d53c4c4 | 24815 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24816 | |
8d749320 | 24817 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24818 | |
8cf6f0b1 | 24819 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24820 | |
2b24b6e4 | 24821 | if (!cu->base_address.has_value ()) |
b98664d3 | 24822 | complaint (_("Location list used without " |
3e43a32a | 24823 | "specifying the CU base address.")); |
4c2df51b | 24824 | |
f1e6e072 TT |
24825 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24826 | ? dwarf2_loclist_block_index | |
24827 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24828 | SYMBOL_LOCATION_BATON (sym) = baton; |
24829 | } | |
24830 | else | |
24831 | { | |
24832 | struct dwarf2_locexpr_baton *baton; | |
24833 | ||
8d749320 | 24834 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 24835 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
24836 | baton->per_cu = cu->per_cu; |
24837 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24838 | |
4fc6c0d5 | 24839 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24840 | { |
24841 | /* Note that we're just copying the block's data pointer | |
24842 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24843 | info_buffer for SYM's objfile; right now we never release |
24844 | that buffer, but when we do clean up properly this may | |
24845 | need to change. */ | |
9d2246fc TT |
24846 | struct dwarf_block *block = attr->as_block (); |
24847 | baton->size = block->size; | |
24848 | baton->data = block->data; | |
0d53c4c4 DJ |
24849 | } |
24850 | else | |
24851 | { | |
24852 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24853 | sym->natural_name ()); |
0d53c4c4 | 24854 | baton->size = 0; |
0d53c4c4 | 24855 | } |
6e70227d | 24856 | |
f1e6e072 TT |
24857 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24858 | ? dwarf2_locexpr_block_index | |
24859 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24860 | SYMBOL_LOCATION_BATON (sym) = baton; |
24861 | } | |
4c2df51b | 24862 | } |
6502dd73 | 24863 | |
2e6a9f79 | 24864 | /* See read.h. */ |
96408a79 | 24865 | |
2e6a9f79 SM |
24866 | const comp_unit_head * |
24867 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 24868 | { |
2e6a9f79 SM |
24869 | if (!m_header_read_in) |
24870 | { | |
24871 | const gdb_byte *info_ptr | |
24872 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 24873 | |
2e6a9f79 | 24874 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 24875 | |
2e6a9f79 SM |
24876 | read_comp_unit_head (&m_header, info_ptr, this->section, |
24877 | rcuh_kind::COMPILE); | |
a9f172c6 TT |
24878 | |
24879 | m_header_read_in = true; | |
2e6a9f79 | 24880 | } |
96408a79 | 24881 | |
2e6a9f79 | 24882 | return &m_header; |
96408a79 SA |
24883 | } |
24884 | ||
09ba997f | 24885 | /* See read.h. */ |
ae0d2f24 | 24886 | |
98714339 | 24887 | int |
09ba997f | 24888 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 24889 | { |
2e6a9f79 | 24890 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
24891 | } |
24892 | ||
09ba997f | 24893 | /* See read.h. */ |
9eae7c52 TT |
24894 | |
24895 | int | |
09ba997f | 24896 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 24897 | { |
2e6a9f79 | 24898 | return this->get_header ()->offset_size; |
96408a79 SA |
24899 | } |
24900 | ||
09ba997f | 24901 | /* See read.h. */ |
96408a79 SA |
24902 | |
24903 | int | |
09ba997f | 24904 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 24905 | { |
2e6a9f79 | 24906 | const comp_unit_head *header = this->get_header (); |
96408a79 | 24907 | |
2e6a9f79 SM |
24908 | if (header->version == 2) |
24909 | return header->addr_size; | |
96408a79 | 24910 | else |
2e6a9f79 | 24911 | return header->offset_size; |
181cebd4 JK |
24912 | } |
24913 | ||
09ba997f | 24914 | /* See read.h. */ |
9aa1f1e3 | 24915 | |
09ba997f | 24916 | struct type * |
293e7e51 | 24917 | dwarf2_cu::addr_type () const |
9a49df9d | 24918 | { |
293e7e51 | 24919 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
24920 | struct type *void_type = objfile_type (objfile)->builtin_void; |
24921 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 24922 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
24923 | |
24924 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24925 | return addr_type; | |
24926 | ||
c6d940a9 | 24927 | addr_type = addr_sized_int_type (addr_type->is_unsigned ()); |
9a49df9d AB |
24928 | return addr_type; |
24929 | } | |
24930 | ||
22b6cd70 TT |
24931 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
24932 | the index of the result, and that searches a vector. It will | |
24933 | return a result even if the offset in question does not actually | |
24934 | occur in any CU. This is separate so that it can be unit | |
24935 | tested. */ | |
ae038cb0 | 24936 | |
22b6cd70 TT |
24937 | static int |
24938 | dwarf2_find_containing_comp_unit | |
24939 | (sect_offset sect_off, | |
24940 | unsigned int offset_in_dwz, | |
24941 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 24942 | { |
ae038cb0 DJ |
24943 | int low, high; |
24944 | ||
ae038cb0 | 24945 | low = 0; |
22b6cd70 | 24946 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
24947 | while (high > low) |
24948 | { | |
36586728 | 24949 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24950 | int mid = low + (high - low) / 2; |
9a619af0 | 24951 | |
22b6cd70 | 24952 | mid_cu = all_comp_units[mid]; |
36586728 | 24953 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24954 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 24955 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
24956 | high = mid; |
24957 | else | |
24958 | low = mid + 1; | |
24959 | } | |
24960 | gdb_assert (low == high); | |
22b6cd70 TT |
24961 | return low; |
24962 | } | |
24963 | ||
24964 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
24965 | the DIE at OFFSET. Raises an error on failure. */ | |
24966 | ||
24967 | static struct dwarf2_per_cu_data * | |
24968 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
24969 | unsigned int offset_in_dwz, | |
976ca316 | 24970 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 24971 | { |
976ca316 SM |
24972 | int low = dwarf2_find_containing_comp_unit |
24973 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
24974 | dwarf2_per_cu_data *this_cu = per_objfile->per_bfd->all_comp_units[low]; | |
22b6cd70 | 24975 | |
45b8ae0c | 24976 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24977 | { |
36586728 | 24978 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24979 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24980 | "offset %s [in module %s]"), |
24981 | sect_offset_str (sect_off), | |
976ca316 | 24982 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 24983 | |
976ca316 | 24984 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 24985 | <= sect_off); |
976ca316 | 24986 | return per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
24987 | } |
24988 | else | |
24989 | { | |
976ca316 | 24990 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 24991 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24992 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24993 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24994 | return this_cu; |
24995 | } | |
24996 | } | |
24997 | ||
22b6cd70 TT |
24998 | #if GDB_SELF_TEST |
24999 | ||
25000 | namespace selftests { | |
25001 | namespace find_containing_comp_unit { | |
25002 | ||
25003 | static void | |
25004 | run_test () | |
25005 | { | |
25006 | struct dwarf2_per_cu_data one {}; | |
25007 | struct dwarf2_per_cu_data two {}; | |
25008 | struct dwarf2_per_cu_data three {}; | |
25009 | struct dwarf2_per_cu_data four {}; | |
25010 | ||
25011 | one.length = 5; | |
25012 | two.sect_off = sect_offset (one.length); | |
25013 | two.length = 7; | |
25014 | ||
25015 | three.length = 5; | |
25016 | three.is_dwz = 1; | |
25017 | four.sect_off = sect_offset (three.length); | |
25018 | four.length = 7; | |
25019 | four.is_dwz = 1; | |
25020 | ||
25021 | std::vector<dwarf2_per_cu_data *> units; | |
25022 | units.push_back (&one); | |
25023 | units.push_back (&two); | |
25024 | units.push_back (&three); | |
25025 | units.push_back (&four); | |
25026 | ||
25027 | int result; | |
25028 | ||
25029 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
25030 | SELF_CHECK (units[result] == &one); | |
25031 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
25032 | SELF_CHECK (units[result] == &one); | |
25033 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
25034 | SELF_CHECK (units[result] == &two); | |
25035 | ||
25036 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
25037 | SELF_CHECK (units[result] == &three); | |
25038 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
25039 | SELF_CHECK (units[result] == &three); | |
25040 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
25041 | SELF_CHECK (units[result] == &four); | |
25042 | } | |
25043 | ||
25044 | } | |
25045 | } | |
25046 | ||
25047 | #endif /* GDB_SELF_TEST */ | |
25048 | ||
9e021579 | 25049 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 25050 | |
9e021579 SM |
25051 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
25052 | dwarf2_per_objfile *per_objfile) | |
25053 | : per_cu (per_cu), | |
25054 | per_objfile (per_objfile), | |
9068261f AB |
25055 | mark (false), |
25056 | has_loclist (false), | |
25057 | checked_producer (false), | |
25058 | producer_is_gxx_lt_4_6 (false), | |
25059 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 25060 | producer_is_icc (false), |
9068261f | 25061 | producer_is_icc_lt_14 (false), |
c258c396 | 25062 | producer_is_codewarrior (false), |
9068261f | 25063 | processing_has_namespace_info (false) |
93311388 | 25064 | { |
9816fde3 JK |
25065 | } |
25066 | ||
25067 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25068 | ||
25069 | static void | |
95554aad TT |
25070 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25071 | enum language pretend_language) | |
9816fde3 JK |
25072 | { |
25073 | struct attribute *attr; | |
25074 | ||
25075 | /* Set the language we're debugging. */ | |
25076 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 25077 | if (attr != nullptr) |
529908cb | 25078 | set_cu_language (attr->constant_value (0), cu); |
9816fde3 | 25079 | else |
9cded63f | 25080 | { |
95554aad | 25081 | cu->language = pretend_language; |
9cded63f TT |
25082 | cu->language_defn = language_def (cu->language); |
25083 | } | |
dee91e82 | 25084 | |
7d45c7c3 | 25085 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25086 | } |
25087 | ||
7188ed02 | 25088 | /* See read.h. */ |
ae038cb0 | 25089 | |
7188ed02 SM |
25090 | dwarf2_cu * |
25091 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 25092 | { |
7188ed02 SM |
25093 | auto it = m_dwarf2_cus.find (per_cu); |
25094 | if (it == m_dwarf2_cus.end ()) | |
25095 | return nullptr; | |
ae038cb0 | 25096 | |
7188ed02 SM |
25097 | return it->second; |
25098 | } | |
25099 | ||
25100 | /* See read.h. */ | |
25101 | ||
25102 | void | |
25103 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
25104 | { | |
25105 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
25106 | ||
25107 | m_dwarf2_cus[per_cu] = cu; | |
25108 | } | |
25109 | ||
25110 | /* See read.h. */ | |
25111 | ||
25112 | void | |
25113 | dwarf2_per_objfile::age_comp_units () | |
25114 | { | |
17e593e9 SM |
25115 | dwarf_read_debug_printf_v ("running"); |
25116 | ||
08ac5771 SM |
25117 | /* This is not expected to be called in the middle of CU expansion. There is |
25118 | an invariant that if a CU is in the CUs-to-expand queue, its DIEs are | |
25119 | loaded in memory. Calling age_comp_units while the queue is in use could | |
25120 | make us free the DIEs for a CU that is in the queue and therefore break | |
25121 | that invariant. */ | |
25122 | gdb_assert (!this->per_bfd->queue.has_value ()); | |
25123 | ||
7188ed02 SM |
25124 | /* Start by clearing all marks. */ |
25125 | for (auto pair : m_dwarf2_cus) | |
25126 | pair.second->mark = false; | |
25127 | ||
25128 | /* Traverse all CUs, mark them and their dependencies if used recently | |
25129 | enough. */ | |
25130 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 25131 | { |
7188ed02 SM |
25132 | dwarf2_cu *cu = pair.second; |
25133 | ||
25134 | cu->last_used++; | |
25135 | if (cu->last_used <= dwarf_max_cache_age) | |
25136 | dwarf2_mark (cu); | |
ae038cb0 DJ |
25137 | } |
25138 | ||
7188ed02 SM |
25139 | /* Delete all CUs still not marked. */ |
25140 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 25141 | { |
7188ed02 | 25142 | dwarf2_cu *cu = it->second; |
ae038cb0 | 25143 | |
7188ed02 | 25144 | if (!cu->mark) |
ae038cb0 | 25145 | { |
17e593e9 SM |
25146 | dwarf_read_debug_printf_v ("deleting old CU %s", |
25147 | sect_offset_str (cu->per_cu->sect_off)); | |
7188ed02 SM |
25148 | delete cu; |
25149 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
25150 | } |
25151 | else | |
7188ed02 | 25152 | it++; |
ae038cb0 DJ |
25153 | } |
25154 | } | |
25155 | ||
7188ed02 | 25156 | /* See read.h. */ |
ae038cb0 | 25157 | |
7188ed02 SM |
25158 | void |
25159 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 25160 | { |
7188ed02 SM |
25161 | auto it = m_dwarf2_cus.find (per_cu); |
25162 | if (it == m_dwarf2_cus.end ()) | |
25163 | return; | |
ae038cb0 | 25164 | |
7188ed02 | 25165 | delete it->second; |
ae038cb0 | 25166 | |
7188ed02 SM |
25167 | m_dwarf2_cus.erase (it); |
25168 | } | |
ae038cb0 | 25169 | |
7188ed02 SM |
25170 | dwarf2_per_objfile::~dwarf2_per_objfile () |
25171 | { | |
25172 | remove_all_cus (); | |
ae038cb0 DJ |
25173 | } |
25174 | ||
dee91e82 DE |
25175 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25176 | We store these in a hash table separate from the DIEs, and preserve them | |
25177 | when the DIEs are flushed out of cache. | |
25178 | ||
25179 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25180 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25181 | or the type may come from a DWO file. Furthermore, while it's more logical |
25182 | to use per_cu->section+offset, with Fission the section with the data is in | |
25183 | the DWO file but we don't know that section at the point we need it. | |
25184 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25185 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25186 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25187 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25188 | |
dee91e82 | 25189 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25190 | { |
dee91e82 | 25191 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25192 | sect_offset sect_off; |
1c379e20 DJ |
25193 | struct type *type; |
25194 | }; | |
25195 | ||
dee91e82 | 25196 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25197 | |
25198 | static hashval_t | |
dee91e82 | 25199 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25200 | { |
9a3c8263 SM |
25201 | const struct dwarf2_per_cu_offset_and_type *ofs |
25202 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25203 | |
9c541725 | 25204 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25205 | } |
25206 | ||
dee91e82 | 25207 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25208 | |
25209 | static int | |
dee91e82 | 25210 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25211 | { |
9a3c8263 SM |
25212 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25213 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25214 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25215 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25216 | |
dee91e82 | 25217 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25218 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25219 | } |
25220 | ||
25221 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25222 | table if necessary. For convenience, return TYPE. |
25223 | ||
25224 | The DIEs reading must have careful ordering to: | |
85102364 | 25225 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
25226 | reading current DIE. |
25227 | * Not trying to dereference contents of still incompletely read in types | |
25228 | while reading in other DIEs. | |
25229 | * Enable referencing still incompletely read in types just by a pointer to | |
25230 | the type without accessing its fields. | |
25231 | ||
25232 | Therefore caller should follow these rules: | |
25233 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25234 | before building the type and calling set_die_type. | |
e71ec853 | 25235 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25236 | possible before fetching more types to complete the current type. |
25237 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25238 | |
f792889a | 25239 | static struct type * |
57567375 TT |
25240 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
25241 | bool skip_data_location) | |
1c379e20 | 25242 | { |
976ca316 | 25243 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 25244 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 25245 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
25246 | struct attribute *attr; |
25247 | struct dynamic_prop prop; | |
1c379e20 | 25248 | |
b4ba55a1 JB |
25249 | /* For Ada types, make sure that the gnat-specific data is always |
25250 | initialized (if not already set). There are a few types where | |
25251 | we should not be doing so, because the type-specific area is | |
25252 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25253 | where the type-specific area is used to store the floatformat). | |
25254 | But this is not a problem, because the gnat-specific information | |
25255 | is actually not needed for these types. */ | |
25256 | if (need_gnat_info (cu) | |
78134374 SM |
25257 | && type->code () != TYPE_CODE_FUNC |
25258 | && type->code () != TYPE_CODE_FLT | |
25259 | && type->code () != TYPE_CODE_METHODPTR | |
25260 | && type->code () != TYPE_CODE_MEMBERPTR | |
25261 | && type->code () != TYPE_CODE_METHOD | |
09584414 | 25262 | && type->code () != TYPE_CODE_FIXED_POINT |
b4ba55a1 JB |
25263 | && !HAVE_GNAT_AUX_INFO (type)) |
25264 | INIT_GNAT_SPECIFIC (type); | |
25265 | ||
3f2f83dd KB |
25266 | /* Read DW_AT_allocated and set in type. */ |
25267 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
9cdf9820 | 25268 | if (attr != NULL) |
3f2f83dd | 25269 | { |
293e7e51 | 25270 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25271 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25272 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd | 25273 | } |
3f2f83dd KB |
25274 | |
25275 | /* Read DW_AT_associated and set in type. */ | |
25276 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
9cdf9820 | 25277 | if (attr != NULL) |
3f2f83dd | 25278 | { |
293e7e51 | 25279 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25280 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25281 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd | 25282 | } |
3f2f83dd | 25283 | |
3cdcd0ce | 25284 | /* Read DW_AT_data_location and set in type. */ |
57567375 TT |
25285 | if (!skip_data_location) |
25286 | { | |
25287 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25288 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) | |
25289 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); | |
25290 | } | |
3cdcd0ce | 25291 | |
976ca316 SM |
25292 | if (per_objfile->die_type_hash == NULL) |
25293 | per_objfile->die_type_hash | |
0335378b TT |
25294 | = htab_up (htab_create_alloc (127, |
25295 | per_cu_offset_and_type_hash, | |
25296 | per_cu_offset_and_type_eq, | |
25297 | NULL, xcalloc, xfree)); | |
1c379e20 | 25298 | |
dee91e82 | 25299 | ofs.per_cu = cu->per_cu; |
9c541725 | 25300 | ofs.sect_off = die->sect_off; |
1c379e20 | 25301 | ofs.type = type; |
dee91e82 | 25302 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 25303 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 25304 | if (*slot) |
b98664d3 | 25305 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25306 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25307 | *slot = XOBNEW (&objfile->objfile_obstack, |
25308 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25309 | **slot = ofs; |
f792889a | 25310 | return type; |
1c379e20 DJ |
25311 | } |
25312 | ||
9c541725 | 25313 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25314 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25315 | |
25316 | static struct type * | |
9c541725 | 25317 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 25318 | dwarf2_per_cu_data *per_cu, |
976ca316 | 25319 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 25320 | { |
dee91e82 | 25321 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 25322 | |
976ca316 | 25323 | if (per_objfile->die_type_hash == NULL) |
f792889a | 25324 | return NULL; |
1c379e20 | 25325 | |
dee91e82 | 25326 | ofs.per_cu = per_cu; |
9c541725 | 25327 | ofs.sect_off = sect_off; |
9a3c8263 | 25328 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 25329 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
25330 | if (slot) |
25331 | return slot->type; | |
25332 | else | |
25333 | return NULL; | |
25334 | } | |
25335 | ||
02142a6c | 25336 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25337 | or return NULL if DIE does not have a saved type. */ |
25338 | ||
25339 | static struct type * | |
25340 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25341 | { | |
aa66c379 | 25342 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
25343 | } |
25344 | ||
10b3939b DJ |
25345 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25346 | ||
25347 | static void | |
25348 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25349 | struct dwarf2_per_cu_data *ref_per_cu) | |
25350 | { | |
25351 | void **slot; | |
25352 | ||
25353 | if (cu->dependencies == NULL) | |
25354 | cu->dependencies | |
25355 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25356 | NULL, &cu->comp_unit_obstack, | |
25357 | hashtab_obstack_allocate, | |
25358 | dummy_obstack_deallocate); | |
25359 | ||
25360 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25361 | if (*slot == NULL) | |
25362 | *slot = ref_per_cu; | |
25363 | } | |
1c379e20 | 25364 | |
f504f079 DE |
25365 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25366 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
25367 | cache that we must keep because we are keeping CU. |
25368 | ||
25369 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 25370 | |
10b3939b DJ |
25371 | static int |
25372 | dwarf2_mark_helper (void **slot, void *data) | |
25373 | { | |
7188ed02 SM |
25374 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
25375 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
25376 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
25377 | |
25378 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25379 | reading of the chain. As such dependencies remain valid it is not much | |
25380 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 25381 | if (cu == nullptr) |
d07ed419 JK |
25382 | return 1; |
25383 | ||
7188ed02 | 25384 | if (cu->mark) |
10b3939b | 25385 | return 1; |
10b3939b | 25386 | |
7188ed02 SM |
25387 | cu->mark = true; |
25388 | ||
25389 | if (cu->dependencies != nullptr) | |
25390 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
25391 | |
25392 | return 1; | |
25393 | } | |
25394 | ||
f504f079 DE |
25395 | /* Set the mark field in CU and in every other compilation unit in the |
25396 | cache that we must keep because we are keeping CU. */ | |
25397 | ||
ae038cb0 DJ |
25398 | static void |
25399 | dwarf2_mark (struct dwarf2_cu *cu) | |
25400 | { | |
25401 | if (cu->mark) | |
25402 | return; | |
7188ed02 | 25403 | |
9068261f | 25404 | cu->mark = true; |
ae038cb0 | 25405 | |
7188ed02 SM |
25406 | if (cu->dependencies != nullptr) |
25407 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
25408 | } |
25409 | ||
72bf9492 DJ |
25410 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25411 | is its offset in .debug_info for this objfile. */ | |
25412 | ||
25413 | static hashval_t | |
25414 | partial_die_hash (const void *item) | |
25415 | { | |
9a3c8263 SM |
25416 | const struct partial_die_info *part_die |
25417 | = (const struct partial_die_info *) item; | |
9a619af0 | 25418 | |
9c541725 | 25419 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25420 | } |
25421 | ||
25422 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25423 | are equal if they have the same offset. */ | |
25424 | ||
25425 | static int | |
25426 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25427 | { | |
9a3c8263 SM |
25428 | const struct partial_die_info *part_die_lhs |
25429 | = (const struct partial_die_info *) item_lhs; | |
25430 | const struct partial_die_info *part_die_rhs | |
25431 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25432 | |
9c541725 | 25433 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25434 | } |
25435 | ||
3c3bb058 AB |
25436 | struct cmd_list_element *set_dwarf_cmdlist; |
25437 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 25438 | |
9291a0cd | 25439 | static void |
cd4fb1b2 SM |
25440 | show_check_physname (struct ui_file *file, int from_tty, |
25441 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25442 | { |
cd4fb1b2 SM |
25443 | fprintf_filtered (file, |
25444 | _("Whether to check \"physname\" is %s.\n"), | |
25445 | value); | |
9291a0cd TT |
25446 | } |
25447 | ||
6c265988 | 25448 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 25449 | void |
6c265988 | 25450 | _initialize_dwarf2_read () |
9291a0cd | 25451 | { |
0743fc83 | 25452 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 25453 | Set DWARF specific variables.\n\ |
590042fc | 25454 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
25455 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
25456 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25457 | |
0743fc83 | 25458 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
25459 | Show DWARF specific variables.\n\ |
25460 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
25461 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
25462 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25463 | |
cd4fb1b2 SM |
25464 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25465 | &dwarf_max_cache_age, _("\ | |
25466 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25467 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25468 | A higher limit means that cached compilation units will be stored\n\ | |
25469 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25470 | caching, which can slow down startup."), | |
25471 | NULL, | |
25472 | show_dwarf_max_cache_age, | |
25473 | &set_dwarf_cmdlist, | |
25474 | &show_dwarf_cmdlist); | |
156942c7 | 25475 | |
cd4fb1b2 SM |
25476 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25477 | Set debugging of the DWARF reader."), _("\ | |
25478 | Show debugging of the DWARF reader."), _("\ | |
25479 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25480 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25481 | information. A value greater than 1 provides more verbose information."), | |
25482 | NULL, | |
25483 | NULL, | |
25484 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25485 | |
cd4fb1b2 SM |
25486 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25487 | Set debugging of the DWARF DIE reader."), _("\ | |
25488 | Show debugging of the DWARF DIE reader."), _("\ | |
25489 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25490 | The value is the maximum depth to print."), | |
25491 | NULL, | |
25492 | NULL, | |
25493 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25494 | |
cd4fb1b2 SM |
25495 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25496 | Set debugging of the dwarf line reader."), _("\ | |
25497 | Show debugging of the dwarf line reader."), _("\ | |
25498 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25499 | A value of 1 (one) provides basic information.\n\ | |
25500 | A value greater than 1 provides more verbose information."), | |
25501 | NULL, | |
25502 | NULL, | |
25503 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25504 | |
cd4fb1b2 SM |
25505 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25506 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25507 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25508 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25509 | the demangler."), | |
25510 | NULL, show_check_physname, | |
25511 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25512 | |
e615022a DE |
25513 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25514 | no_class, &use_deprecated_index_sections, _("\ | |
25515 | Set whether to use deprecated gdb_index sections."), _("\ | |
25516 | Show whether to use deprecated gdb_index sections."), _("\ | |
25517 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25518 | Normally they are ignored either because of a missing feature or\n\ | |
25519 | performance issue.\n\ | |
25520 | Warning: This option must be enabled before gdb reads the file."), | |
25521 | NULL, | |
25522 | NULL, | |
25523 | &setlist, &showlist); | |
25524 | ||
f1e6e072 TT |
25525 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25526 | &dwarf2_locexpr_funcs); | |
25527 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25528 | &dwarf2_loclist_funcs); | |
25529 | ||
25530 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25531 | &dwarf2_block_frame_base_locexpr_funcs); | |
25532 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25533 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25534 | |
25535 | #if GDB_SELF_TEST | |
25536 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25537 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
25538 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
25539 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 25540 | #endif |
6502dd73 | 25541 | } |