Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
b811d2c2 | 3 | Copyright (C) 1994-2020 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c | 31 | #include "defs.h" |
82ca8957 | 32 | #include "dwarf2/read.h" |
3054dd54 | 33 | #include "dwarf2/abbrev.h" |
162dce55 | 34 | #include "dwarf2/attribute.h" |
4057dfde | 35 | #include "dwarf2/comp-unit.h" |
82ca8957 TT |
36 | #include "dwarf2/index-cache.h" |
37 | #include "dwarf2/index-common.h" | |
f4382c45 | 38 | #include "dwarf2/leb.h" |
8fdd972c | 39 | #include "dwarf2/line-header.h" |
9fda78b6 | 40 | #include "dwarf2/dwz.h" |
c90ec28a | 41 | #include "dwarf2/macro.h" |
c2d50fd0 | 42 | #include "dwarf2/die.h" |
2b2558bf | 43 | #include "dwarf2/stringify.h" |
4de283e4 TT |
44 | #include "bfd.h" |
45 | #include "elf-bfd.h" | |
46 | #include "symtab.h" | |
47 | #include "gdbtypes.h" | |
48 | #include "objfiles.h" | |
d55e5aa6 | 49 | #include "dwarf2.h" |
4de283e4 TT |
50 | #include "buildsym.h" |
51 | #include "demangle.h" | |
52 | #include "gdb-demangle.h" | |
4de283e4 | 53 | #include "filenames.h" /* for DOSish file names */ |
4de283e4 TT |
54 | #include "language.h" |
55 | #include "complaints.h" | |
82ca8957 TT |
56 | #include "dwarf2/expr.h" |
57 | #include "dwarf2/loc.h" | |
4de283e4 TT |
58 | #include "cp-support.h" |
59 | #include "hashtab.h" | |
60 | #include "command.h" | |
d55e5aa6 | 61 | #include "gdbcmd.h" |
4de283e4 TT |
62 | #include "block.h" |
63 | #include "addrmap.h" | |
64 | #include "typeprint.h" | |
65 | #include "psympriv.h" | |
4de283e4 | 66 | #include "c-lang.h" |
d55e5aa6 | 67 | #include "go-lang.h" |
4de283e4 TT |
68 | #include "valprint.h" |
69 | #include "gdbcore.h" /* for gnutarget */ | |
70 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
71 | #include "gdb_bfd.h" |
72 | #include "f-lang.h" | |
73 | #include "source.h" | |
4de283e4 | 74 | #include "build-id.h" |
d55e5aa6 | 75 | #include "namespace.h" |
268a13a5 TT |
76 | #include "gdbsupport/function-view.h" |
77 | #include "gdbsupport/gdb_optional.h" | |
78 | #include "gdbsupport/underlying.h" | |
268a13a5 | 79 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 80 | #include "filename-seen-cache.h" |
b32b108a | 81 | #include "producer.h" |
4de283e4 | 82 | #include <fcntl.h> |
4de283e4 | 83 | #include <algorithm> |
4de283e4 | 84 | #include <unordered_map> |
268a13a5 | 85 | #include "gdbsupport/selftest.h" |
c9317f21 | 86 | #include "rust-lang.h" |
268a13a5 | 87 | #include "gdbsupport/pathstuff.h" |
edd45eb0 | 88 | #include "count-one-bits.h" |
0d79cdc4 | 89 | #include "debuginfod-support.h" |
437afbb8 | 90 | |
73be47f5 DE |
91 | /* When == 1, print basic high level tracing messages. |
92 | When > 1, be more verbose. | |
b4f54984 DE |
93 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
94 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 95 | |
d97bc12b | 96 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 97 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 98 | |
27e0867f | 99 | /* When non-zero, dump line number entries as they are read in. */ |
8fdd972c | 100 | unsigned int dwarf_line_debug = 0; |
27e0867f | 101 | |
491144b5 CB |
102 | /* When true, cross-check physname against demangler. */ |
103 | static bool check_physname = false; | |
900e11f9 | 104 | |
491144b5 CB |
105 | /* When true, do not reject deprecated .gdb_index sections. */ |
106 | static bool use_deprecated_index_sections = false; | |
481860b3 | 107 | |
17ee85fc TT |
108 | /* This is used to store the data that is always per objfile. */ |
109 | static const objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; | |
110 | ||
111 | /* These are used to store the dwarf2_per_bfd objects. | |
112 | ||
113 | objfiles having the same BFD, which doesn't require relocations, are going to | |
114 | share a dwarf2_per_bfd object, which is held in the _bfd_data_key version. | |
115 | ||
116 | Other objfiles are not going to share a dwarf2_per_bfd with any other | |
117 | objfiles, so they'll have their own version kept in the _objfile_data_key | |
118 | version. */ | |
119 | static const struct bfd_key<dwarf2_per_bfd> dwarf2_per_bfd_bfd_data_key; | |
120 | static const struct objfile_key<dwarf2_per_bfd> dwarf2_per_bfd_objfile_data_key; | |
6502dd73 | 121 | |
f1e6e072 TT |
122 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
123 | ||
124 | static int dwarf2_locexpr_index; | |
125 | static int dwarf2_loclist_index; | |
126 | static int dwarf2_locexpr_block_index; | |
127 | static int dwarf2_loclist_block_index; | |
128 | ||
41144253 | 129 | /* Size of .debug_loclists section header for 32-bit DWARF format. */ |
130 | #define LOCLIST_HEADER_SIZE32 12 | |
131 | ||
132 | /* Size of .debug_loclists section header for 64-bit DWARF format. */ | |
133 | #define LOCLIST_HEADER_SIZE64 20 | |
134 | ||
3f563c84 PA |
135 | /* An index into a (C++) symbol name component in a symbol name as |
136 | recorded in the mapped_index's symbol table. For each C++ symbol | |
137 | in the symbol table, we record one entry for the start of each | |
138 | component in the symbol in a table of name components, and then | |
139 | sort the table, in order to be able to binary search symbol names, | |
140 | ignoring leading namespaces, both completion and regular look up. | |
141 | For example, for symbol "A::B::C", we'll have an entry that points | |
142 | to "A::B::C", another that points to "B::C", and another for "C". | |
143 | Note that function symbols in GDB index have no parameter | |
144 | information, just the function/method names. You can convert a | |
145 | name_component to a "const char *" using the | |
146 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
147 | ||
148 | struct name_component | |
149 | { | |
150 | /* Offset in the symbol name where the component starts. Stored as | |
151 | a (32-bit) offset instead of a pointer to save memory and improve | |
152 | locality on 64-bit architectures. */ | |
153 | offset_type name_offset; | |
154 | ||
155 | /* The symbol's index in the symbol and constant pool tables of a | |
156 | mapped_index. */ | |
157 | offset_type idx; | |
158 | }; | |
159 | ||
44ed8f3e PA |
160 | /* Base class containing bits shared by both .gdb_index and |
161 | .debug_name indexes. */ | |
162 | ||
163 | struct mapped_index_base | |
164 | { | |
22ca247e TT |
165 | mapped_index_base () = default; |
166 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
167 | ||
44ed8f3e PA |
168 | /* The name_component table (a sorted vector). See name_component's |
169 | description above. */ | |
170 | std::vector<name_component> name_components; | |
171 | ||
172 | /* How NAME_COMPONENTS is sorted. */ | |
173 | enum case_sensitivity name_components_casing; | |
174 | ||
175 | /* Return the number of names in the symbol table. */ | |
176 | virtual size_t symbol_name_count () const = 0; | |
177 | ||
178 | /* Get the name of the symbol at IDX in the symbol table. */ | |
fcf23d5b SM |
179 | virtual const char *symbol_name_at |
180 | (offset_type idx, dwarf2_per_objfile *per_objfile) const = 0; | |
44ed8f3e PA |
181 | |
182 | /* Return whether the name at IDX in the symbol table should be | |
183 | ignored. */ | |
184 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
185 | { | |
186 | return false; | |
187 | } | |
188 | ||
189 | /* Build the symbol name component sorted vector, if we haven't | |
190 | yet. */ | |
fcf23d5b | 191 | void build_name_components (dwarf2_per_objfile *per_objfile); |
44ed8f3e PA |
192 | |
193 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
194 | possible matches for LN_NO_PARAMS in the name component | |
195 | vector. */ | |
196 | std::pair<std::vector<name_component>::const_iterator, | |
197 | std::vector<name_component>::const_iterator> | |
3b00ef10 | 198 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
fcf23d5b SM |
199 | enum language lang, |
200 | dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
201 | |
202 | /* Prevent deleting/destroying via a base class pointer. */ | |
203 | protected: | |
204 | ~mapped_index_base() = default; | |
205 | }; | |
206 | ||
9291a0cd TT |
207 | /* A description of the mapped index. The file format is described in |
208 | a comment by the code that writes the index. */ | |
fc898b42 | 209 | struct mapped_index final : public mapped_index_base |
9291a0cd | 210 | { |
f00a2de2 PA |
211 | /* A slot/bucket in the symbol table hash. */ |
212 | struct symbol_table_slot | |
213 | { | |
214 | const offset_type name; | |
215 | const offset_type vec; | |
216 | }; | |
217 | ||
559a7a62 | 218 | /* Index data format version. */ |
3063847f | 219 | int version = 0; |
559a7a62 | 220 | |
f00a2de2 PA |
221 | /* The address table data. */ |
222 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 223 | |
3876f04e | 224 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 225 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 226 | |
9291a0cd | 227 | /* A pointer to the constant pool. */ |
3063847f | 228 | const char *constant_pool = nullptr; |
3f563c84 | 229 | |
44ed8f3e PA |
230 | bool symbol_name_slot_invalid (offset_type idx) const override |
231 | { | |
232 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 233 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 234 | } |
5c58de74 | 235 | |
3f563c84 PA |
236 | /* Convenience method to get at the name of the symbol at IDX in the |
237 | symbol table. */ | |
fcf23d5b SM |
238 | const char *symbol_name_at |
239 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
f00a2de2 | 240 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 241 | |
44ed8f3e PA |
242 | size_t symbol_name_count () const override |
243 | { return this->symbol_table.size (); } | |
9291a0cd TT |
244 | }; |
245 | ||
927aa2e7 JK |
246 | /* A description of the mapped .debug_names. |
247 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 248 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 JK |
249 | { |
250 | bfd_endian dwarf5_byte_order; | |
251 | bool dwarf5_is_dwarf64; | |
252 | bool augmentation_is_gdb; | |
253 | uint8_t offset_size; | |
254 | uint32_t cu_count = 0; | |
255 | uint32_t tu_count, bucket_count, name_count; | |
256 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
257 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
258 | const gdb_byte *name_table_string_offs_reordered; | |
259 | const gdb_byte *name_table_entry_offs_reordered; | |
260 | const gdb_byte *entry_pool; | |
261 | ||
262 | struct index_val | |
263 | { | |
264 | ULONGEST dwarf_tag; | |
265 | struct attr | |
266 | { | |
267 | /* Attribute name DW_IDX_*. */ | |
268 | ULONGEST dw_idx; | |
269 | ||
270 | /* Attribute form DW_FORM_*. */ | |
271 | ULONGEST form; | |
272 | ||
273 | /* Value if FORM is DW_FORM_implicit_const. */ | |
274 | LONGEST implicit_const; | |
275 | }; | |
276 | std::vector<attr> attr_vec; | |
277 | }; | |
278 | ||
279 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
280 | ||
fcf23d5b SM |
281 | const char *namei_to_name |
282 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
283 | |
284 | /* Implementation of the mapped_index_base virtual interface, for | |
285 | the name_components cache. */ | |
286 | ||
fcf23d5b SM |
287 | const char *symbol_name_at |
288 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
289 | { return namei_to_name (idx, per_objfile); } | |
44ed8f3e PA |
290 | |
291 | size_t symbol_name_count () const override | |
292 | { return this->name_count; } | |
927aa2e7 JK |
293 | }; |
294 | ||
cd4fb1b2 | 295 | /* See dwarf2read.h. */ |
ed2dc618 | 296 | |
cd4fb1b2 | 297 | dwarf2_per_objfile * |
ed2dc618 SM |
298 | get_dwarf2_per_objfile (struct objfile *objfile) |
299 | { | |
5bfd760d | 300 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 301 | } |
c906108c | 302 | |
251d32d9 | 303 | /* Default names of the debugging sections. */ |
c906108c | 304 | |
233a11ab CS |
305 | /* Note that if the debugging section has been compressed, it might |
306 | have a name like .zdebug_info. */ | |
307 | ||
9cdd5dbd DE |
308 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
309 | { | |
251d32d9 TG |
310 | { ".debug_info", ".zdebug_info" }, |
311 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
312 | { ".debug_line", ".zdebug_line" }, | |
313 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 314 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 315 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 316 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 317 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 318 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 319 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 320 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 321 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 322 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 323 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
324 | { ".debug_frame", ".zdebug_frame" }, |
325 | { ".eh_frame", NULL }, | |
24d3216f | 326 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
327 | { ".debug_names", ".zdebug_names" }, |
328 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 329 | 23 |
251d32d9 | 330 | }; |
c906108c | 331 | |
80626a55 | 332 | /* List of DWO/DWP sections. */ |
3019eac3 | 333 | |
80626a55 | 334 | static const struct dwop_section_names |
3019eac3 DE |
335 | { |
336 | struct dwarf2_section_names abbrev_dwo; | |
337 | struct dwarf2_section_names info_dwo; | |
338 | struct dwarf2_section_names line_dwo; | |
339 | struct dwarf2_section_names loc_dwo; | |
43988095 | 340 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
341 | struct dwarf2_section_names macinfo_dwo; |
342 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
343 | struct dwarf2_section_names str_dwo; |
344 | struct dwarf2_section_names str_offsets_dwo; | |
345 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
346 | struct dwarf2_section_names cu_index; |
347 | struct dwarf2_section_names tu_index; | |
3019eac3 | 348 | } |
80626a55 | 349 | dwop_section_names = |
3019eac3 DE |
350 | { |
351 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
352 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
353 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
354 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 355 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
356 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
357 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
358 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
359 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
360 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
361 | { ".debug_cu_index", ".zdebug_cu_index" }, |
362 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
363 | }; |
364 | ||
c906108c SS |
365 | /* local data types */ |
366 | ||
41144253 | 367 | /* The location list section (.debug_loclists) begins with a header, |
368 | which contains the following information. */ | |
369 | struct loclist_header | |
370 | { | |
371 | /* A 4-byte or 12-byte length containing the length of the | |
372 | set of entries for this compilation unit, not including the | |
373 | length field itself. */ | |
374 | unsigned int length; | |
375 | ||
376 | /* A 2-byte version identifier. */ | |
377 | short version; | |
378 | ||
379 | /* A 1-byte unsigned integer containing the size in bytes of an address on | |
380 | the target system. */ | |
381 | unsigned char addr_size; | |
382 | ||
383 | /* A 1-byte unsigned integer containing the size in bytes of a segment selector | |
384 | on the target system. */ | |
385 | unsigned char segment_collector_size; | |
386 | ||
387 | /* A 4-byte count of the number of offsets that follow the header. */ | |
388 | unsigned int offset_entry_count; | |
389 | }; | |
390 | ||
3da10d80 KS |
391 | /* Type used for delaying computation of method physnames. |
392 | See comments for compute_delayed_physnames. */ | |
393 | struct delayed_method_info | |
394 | { | |
395 | /* The type to which the method is attached, i.e., its parent class. */ | |
396 | struct type *type; | |
397 | ||
398 | /* The index of the method in the type's function fieldlists. */ | |
399 | int fnfield_index; | |
400 | ||
401 | /* The index of the method in the fieldlist. */ | |
402 | int index; | |
403 | ||
404 | /* The name of the DIE. */ | |
405 | const char *name; | |
406 | ||
407 | /* The DIE associated with this method. */ | |
408 | struct die_info *die; | |
409 | }; | |
410 | ||
e7c27a73 DJ |
411 | /* Internal state when decoding a particular compilation unit. */ |
412 | struct dwarf2_cu | |
413 | { | |
9e021579 SM |
414 | explicit dwarf2_cu (dwarf2_per_cu_data *per_cu, |
415 | dwarf2_per_objfile *per_objfile); | |
fcd3b13d SM |
416 | |
417 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
418 | ||
c24bdb02 KS |
419 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
420 | Create the set of symtabs used by this TU, or if this TU is sharing | |
421 | symtabs with another TU and the symtabs have already been created | |
422 | then restore those symtabs in the line header. | |
423 | We don't need the pc/line-number mapping for type units. */ | |
424 | void setup_type_unit_groups (struct die_info *die); | |
425 | ||
426 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
427 | buildsym_compunit constructor. */ | |
428 | struct compunit_symtab *start_symtab (const char *name, | |
429 | const char *comp_dir, | |
430 | CORE_ADDR low_pc); | |
431 | ||
432 | /* Reset the builder. */ | |
433 | void reset_builder () { m_builder.reset (); } | |
434 | ||
293e7e51 SM |
435 | /* Return a type that is a generic pointer type, the size of which |
436 | matches the address size given in the compilation unit header for | |
437 | this CU. */ | |
438 | struct type *addr_type () const; | |
439 | ||
440 | /* Find an integer type the same size as the address size given in | |
441 | the compilation unit header for this CU. UNSIGNED_P controls if | |
442 | the integer is unsigned or not. */ | |
443 | struct type *addr_sized_int_type (bool unsigned_p) const; | |
444 | ||
d00adf39 | 445 | /* The header of the compilation unit. */ |
fcd3b13d | 446 | struct comp_unit_head header {}; |
e142c38c | 447 | |
d00adf39 | 448 | /* Base address of this compilation unit. */ |
2b24b6e4 | 449 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 450 | |
e142c38c | 451 | /* The language we are debugging. */ |
fcd3b13d SM |
452 | enum language language = language_unknown; |
453 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 454 | |
fcd3b13d | 455 | const char *producer = nullptr; |
b0f35d58 | 456 | |
c24bdb02 | 457 | private: |
804d2729 TT |
458 | /* The symtab builder for this CU. This is only non-NULL when full |
459 | symbols are being read. */ | |
c24bdb02 | 460 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 461 | |
c24bdb02 | 462 | public: |
e142c38c DJ |
463 | /* The generic symbol table building routines have separate lists for |
464 | file scope symbols and all all other scopes (local scopes). So | |
465 | we need to select the right one to pass to add_symbol_to_list(). | |
466 | We do it by keeping a pointer to the correct list in list_in_scope. | |
467 | ||
468 | FIXME: The original dwarf code just treated the file scope as the | |
469 | first local scope, and all other local scopes as nested local | |
470 | scopes, and worked fine. Check to see if we really need to | |
471 | distinguish these in buildsym.c. */ | |
fcd3b13d | 472 | struct pending **list_in_scope = nullptr; |
e142c38c | 473 | |
b64f50a1 JK |
474 | /* Hash table holding all the loaded partial DIEs |
475 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 476 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
477 | |
478 | /* Storage for things with the same lifetime as this read-in compilation | |
479 | unit, including partial DIEs. */ | |
fcd3b13d | 480 | auto_obstack comp_unit_obstack; |
72bf9492 | 481 | |
69d751e3 | 482 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
483 | struct dwarf2_per_cu_data *per_cu; |
484 | ||
9e021579 | 485 | /* The dwarf2_per_objfile that owns this. */ |
976ca316 | 486 | dwarf2_per_objfile *per_objfile; |
9e021579 | 487 | |
ae038cb0 | 488 | /* How many compilation units ago was this CU last referenced? */ |
fcd3b13d | 489 | int last_used = 0; |
ae038cb0 | 490 | |
b64f50a1 JK |
491 | /* A hash table of DIE cu_offset for following references with |
492 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 493 | htab_t die_hash = nullptr; |
10b3939b DJ |
494 | |
495 | /* Full DIEs if read in. */ | |
fcd3b13d | 496 | struct die_info *dies = nullptr; |
10b3939b DJ |
497 | |
498 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
499 | units referenced by this one. Only set during full symbol processing; | |
500 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 501 | htab_t dependencies = nullptr; |
10b3939b | 502 | |
cb1df416 | 503 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 504 | struct line_header *line_header = nullptr; |
4c8aa72d | 505 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
5989a64e | 506 | it's owned by dwarf2_per_bfd::line_header_hash. If non-NULL, |
4c8aa72d PA |
507 | this is the DW_TAG_compile_unit die for this CU. We'll hold on |
508 | to the line header as long as this DIE is being processed. See | |
509 | process_die_scope. */ | |
fcd3b13d | 510 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 511 | |
3da10d80 KS |
512 | /* A list of methods which need to have physnames computed |
513 | after all type information has been read. */ | |
c89b44cd | 514 | std::vector<delayed_method_info> method_list; |
3da10d80 | 515 | |
96408a79 | 516 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 517 | htab_t call_site_htab = nullptr; |
96408a79 | 518 | |
034e5797 DE |
519 | /* Non-NULL if this CU came from a DWO file. |
520 | There is an invariant here that is important to remember: | |
521 | Except for attributes copied from the top level DIE in the "main" | |
522 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 523 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
524 | Either there isn't a DWO file (in which case this is NULL and the point |
525 | is moot), or there is and either we're not going to read it (in which | |
526 | case this is NULL) or there is and we are reading it (in which case this | |
527 | is non-NULL). */ | |
fcd3b13d | 528 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 529 | |
18a8505e | 530 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 531 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 532 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 533 | |
18a8505e | 534 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 535 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 536 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
537 | be used without needing to know whether DWO files are in use or not. |
538 | N.B. This does not apply to DW_AT_ranges appearing in | |
539 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
540 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 541 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 542 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 543 | ULONGEST ranges_base = 0; |
2e3cf129 | 544 | |
41144253 | 545 | /* The DW_AT_loclists_base attribute if present. */ |
546 | ULONGEST loclist_base = 0; | |
547 | ||
c9317f21 TT |
548 | /* When reading debug info generated by older versions of rustc, we |
549 | have to rewrite some union types to be struct types with a | |
550 | variant part. This rewriting must be done after the CU is fully | |
551 | read in, because otherwise at the point of rewriting some struct | |
552 | type might not have been fully processed. So, we keep a list of | |
553 | all such types here and process them after expansion. */ | |
554 | std::vector<struct type *> rust_unions; | |
555 | ||
18a8505e AT |
556 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
557 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
558 | value is often implicit and is the size of the header of | |
559 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
560 | gdb::optional<ULONGEST> str_offsets_base; | |
561 | ||
ae038cb0 | 562 | /* Mark used when releasing cached dies. */ |
9068261f | 563 | bool mark : 1; |
ae038cb0 | 564 | |
8be455d7 JK |
565 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
566 | This test is imperfect as there may exist optimized debug code not using | |
567 | any location list and still facing inlining issues if handled as | |
568 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 569 | bool has_loclist : 1; |
ba919b58 | 570 | |
9068261f | 571 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
572 | if all the producer_is_* fields are valid. This information is cached |
573 | because profiling CU expansion showed excessive time spent in | |
574 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
575 | bool checked_producer : 1; |
576 | bool producer_is_gxx_lt_4_6 : 1; | |
577 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 578 | bool producer_is_icc : 1; |
9068261f | 579 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 580 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 581 | |
9068261f | 582 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
583 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
584 | this information, but later versions do. */ | |
585 | ||
9068261f | 586 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
587 | |
588 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
589 | |
590 | /* If this CU was inherited by another CU (via specification, | |
591 | abstract_origin, etc), this is the ancestor CU. */ | |
592 | dwarf2_cu *ancestor; | |
593 | ||
594 | /* Get the buildsym_compunit for this CU. */ | |
595 | buildsym_compunit *get_builder () | |
596 | { | |
597 | /* If this CU has a builder associated with it, use that. */ | |
598 | if (m_builder != nullptr) | |
599 | return m_builder.get (); | |
600 | ||
601 | /* Otherwise, search ancestors for a valid builder. */ | |
602 | if (ancestor != nullptr) | |
603 | return ancestor->get_builder (); | |
604 | ||
605 | return nullptr; | |
606 | } | |
e7c27a73 DJ |
607 | }; |
608 | ||
094b34ac DE |
609 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
610 | This includes type_unit_group and quick_file_names. */ | |
611 | ||
612 | struct stmt_list_hash | |
613 | { | |
614 | /* The DWO unit this table is from or NULL if there is none. */ | |
615 | struct dwo_unit *dwo_unit; | |
616 | ||
617 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 618 | sect_offset line_sect_off; |
094b34ac DE |
619 | }; |
620 | ||
5989a64e | 621 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
622 | an object of this type. This contains elements of type unit groups |
623 | that can be shared across objfiles. The non-shareable parts are in | |
624 | type_unit_group_unshareable. */ | |
f4dc4d17 DE |
625 | |
626 | struct type_unit_group | |
627 | { | |
0186c6a7 | 628 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
629 | To simplify things we create an artificial CU that "includes" all the |
630 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 631 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
632 | struct dwarf2_per_cu_data per_cu; |
633 | ||
0186c6a7 DE |
634 | /* The TUs that share this DW_AT_stmt_list entry. |
635 | This is added to while parsing type units to build partial symtabs, | |
636 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 637 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 638 | |
094b34ac DE |
639 | /* The data used to construct the hash key. */ |
640 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
641 | }; |
642 | ||
73869dc2 | 643 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
644 | |
645 | struct dwo_sections | |
646 | { | |
647 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
648 | struct dwarf2_section_info line; |
649 | struct dwarf2_section_info loc; | |
43988095 | 650 | struct dwarf2_section_info loclists; |
09262596 DE |
651 | struct dwarf2_section_info macinfo; |
652 | struct dwarf2_section_info macro; | |
3019eac3 DE |
653 | struct dwarf2_section_info str; |
654 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
655 | /* In the case of a virtual DWO file, these two are unused. */ |
656 | struct dwarf2_section_info info; | |
fd5866f6 | 657 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
658 | }; |
659 | ||
c88ee1f0 | 660 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
661 | |
662 | struct dwo_unit | |
663 | { | |
664 | /* Backlink to the containing struct dwo_file. */ | |
665 | struct dwo_file *dwo_file; | |
666 | ||
667 | /* The "id" that distinguishes this CU/TU. | |
668 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
669 | Since signatures came first, we stick with it for consistency. */ | |
670 | ULONGEST signature; | |
671 | ||
672 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 673 | struct dwarf2_section_info *section; |
3019eac3 | 674 | |
9c541725 PA |
675 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
676 | sect_offset sect_off; | |
3019eac3 DE |
677 | unsigned int length; |
678 | ||
679 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
680 | cu_offset type_offset_in_tu; | |
681 | }; | |
682 | ||
73869dc2 DE |
683 | /* include/dwarf2.h defines the DWP section codes. |
684 | It defines a max value but it doesn't define a min value, which we | |
685 | use for error checking, so provide one. */ | |
686 | ||
687 | enum dwp_v2_section_ids | |
688 | { | |
689 | DW_SECT_MIN = 1 | |
690 | }; | |
691 | ||
80626a55 | 692 | /* Data for one DWO file. |
57d63ce2 DE |
693 | |
694 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
695 | appears in a DWP file). DWP files don't really have DWO files per se - | |
696 | comdat folding of types "loses" the DWO file they came from, and from | |
697 | a high level view DWP files appear to contain a mass of random types. | |
698 | However, to maintain consistency with the non-DWP case we pretend DWP | |
699 | files contain virtual DWO files, and we assign each TU with one virtual | |
700 | DWO file (generally based on the line and abbrev section offsets - | |
701 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
702 | |
703 | struct dwo_file | |
704 | { | |
51ac9db5 SM |
705 | dwo_file () = default; |
706 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
707 | ||
18a8505e | 708 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
709 | For virtual DWO files the name is constructed from the section offsets |
710 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
711 | from related CU+TUs. */ | |
51ac9db5 | 712 | const char *dwo_name = nullptr; |
0ac5b59e DE |
713 | |
714 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 715 | const char *comp_dir = nullptr; |
3019eac3 | 716 | |
80626a55 DE |
717 | /* The bfd, when the file is open. Otherwise this is NULL. |
718 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 719 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 720 | |
73869dc2 DE |
721 | /* The sections that make up this DWO file. |
722 | Remember that for virtual DWO files in DWP V2, these are virtual | |
723 | sections (for lack of a better name). */ | |
51ac9db5 | 724 | struct dwo_sections sections {}; |
3019eac3 | 725 | |
33c5cd75 DB |
726 | /* The CUs in the file. |
727 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
728 | an extension to handle LLVM's Link Time Optimization output (where | |
729 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 730 | htab_up cus; |
3019eac3 DE |
731 | |
732 | /* Table of TUs in the file. | |
733 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 734 | htab_up tus; |
3019eac3 DE |
735 | }; |
736 | ||
80626a55 DE |
737 | /* These sections are what may appear in a DWP file. */ |
738 | ||
739 | struct dwp_sections | |
740 | { | |
73869dc2 | 741 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
742 | struct dwarf2_section_info str; |
743 | struct dwarf2_section_info cu_index; | |
744 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
745 | |
746 | /* These are only used by DWP version 2 files. | |
747 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
748 | sections are referenced by section number, and are not recorded here. | |
749 | In DWP version 2 there is at most one copy of all these sections, each | |
750 | section being (effectively) comprised of the concatenation of all of the | |
751 | individual sections that exist in the version 1 format. | |
752 | To keep the code simple we treat each of these concatenated pieces as a | |
753 | section itself (a virtual section?). */ | |
754 | struct dwarf2_section_info abbrev; | |
755 | struct dwarf2_section_info info; | |
756 | struct dwarf2_section_info line; | |
757 | struct dwarf2_section_info loc; | |
758 | struct dwarf2_section_info macinfo; | |
759 | struct dwarf2_section_info macro; | |
760 | struct dwarf2_section_info str_offsets; | |
761 | struct dwarf2_section_info types; | |
80626a55 DE |
762 | }; |
763 | ||
73869dc2 DE |
764 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
765 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 766 | |
73869dc2 | 767 | struct virtual_v1_dwo_sections |
80626a55 DE |
768 | { |
769 | struct dwarf2_section_info abbrev; | |
770 | struct dwarf2_section_info line; | |
771 | struct dwarf2_section_info loc; | |
772 | struct dwarf2_section_info macinfo; | |
773 | struct dwarf2_section_info macro; | |
774 | struct dwarf2_section_info str_offsets; | |
775 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 776 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
777 | struct dwarf2_section_info info_or_types; |
778 | }; | |
779 | ||
73869dc2 DE |
780 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
781 | In version 2, the sections of the DWO files are concatenated together | |
782 | and stored in one section of that name. Thus each ELF section contains | |
783 | several "virtual" sections. */ | |
784 | ||
785 | struct virtual_v2_dwo_sections | |
786 | { | |
787 | bfd_size_type abbrev_offset; | |
788 | bfd_size_type abbrev_size; | |
789 | ||
790 | bfd_size_type line_offset; | |
791 | bfd_size_type line_size; | |
792 | ||
793 | bfd_size_type loc_offset; | |
794 | bfd_size_type loc_size; | |
795 | ||
796 | bfd_size_type macinfo_offset; | |
797 | bfd_size_type macinfo_size; | |
798 | ||
799 | bfd_size_type macro_offset; | |
800 | bfd_size_type macro_size; | |
801 | ||
802 | bfd_size_type str_offsets_offset; | |
803 | bfd_size_type str_offsets_size; | |
804 | ||
805 | /* Each DWP hash table entry records one CU or one TU. | |
806 | That is recorded here, and copied to dwo_unit.section. */ | |
807 | bfd_size_type info_or_types_offset; | |
808 | bfd_size_type info_or_types_size; | |
809 | }; | |
810 | ||
80626a55 DE |
811 | /* Contents of DWP hash tables. */ |
812 | ||
813 | struct dwp_hash_table | |
814 | { | |
73869dc2 | 815 | uint32_t version, nr_columns; |
80626a55 | 816 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
817 | const gdb_byte *hash_table, *unit_table; |
818 | union | |
819 | { | |
820 | struct | |
821 | { | |
822 | const gdb_byte *indices; | |
823 | } v1; | |
824 | struct | |
825 | { | |
826 | /* This is indexed by column number and gives the id of the section | |
827 | in that column. */ | |
828 | #define MAX_NR_V2_DWO_SECTIONS \ | |
829 | (1 /* .debug_info or .debug_types */ \ | |
830 | + 1 /* .debug_abbrev */ \ | |
831 | + 1 /* .debug_line */ \ | |
832 | + 1 /* .debug_loc */ \ | |
833 | + 1 /* .debug_str_offsets */ \ | |
834 | + 1 /* .debug_macro or .debug_macinfo */) | |
835 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
836 | const gdb_byte *offsets; | |
837 | const gdb_byte *sizes; | |
838 | } v2; | |
839 | } section_pool; | |
80626a55 DE |
840 | }; |
841 | ||
842 | /* Data for one DWP file. */ | |
843 | ||
844 | struct dwp_file | |
845 | { | |
400174b1 TT |
846 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
847 | : name (name_), | |
848 | dbfd (std::move (abfd)) | |
849 | { | |
850 | } | |
851 | ||
80626a55 DE |
852 | /* Name of the file. */ |
853 | const char *name; | |
854 | ||
73869dc2 | 855 | /* File format version. */ |
400174b1 | 856 | int version = 0; |
73869dc2 | 857 | |
93417882 | 858 | /* The bfd. */ |
400174b1 | 859 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
860 | |
861 | /* Section info for this file. */ | |
400174b1 | 862 | struct dwp_sections sections {}; |
80626a55 | 863 | |
57d63ce2 | 864 | /* Table of CUs in the file. */ |
400174b1 | 865 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
866 | |
867 | /* Table of TUs in the file. */ | |
400174b1 | 868 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 869 | |
19ac8c2e | 870 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
871 | htab_up loaded_cus; |
872 | htab_up loaded_tus; | |
80626a55 | 873 | |
73869dc2 DE |
874 | /* Table to map ELF section numbers to their sections. |
875 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
876 | unsigned int num_sections = 0; |
877 | asection **elf_sections = nullptr; | |
80626a55 DE |
878 | }; |
879 | ||
0963b4bd MS |
880 | /* Struct used to pass misc. parameters to read_die_and_children, et |
881 | al. which are used for both .debug_info and .debug_types dies. | |
882 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 883 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
884 | |
885 | struct die_reader_specs | |
886 | { | |
a32a8923 | 887 | /* The bfd of die_section. */ |
93311388 DE |
888 | bfd* abfd; |
889 | ||
890 | /* The CU of the DIE we are parsing. */ | |
891 | struct dwarf2_cu *cu; | |
892 | ||
80626a55 | 893 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
894 | struct dwo_file *dwo_file; |
895 | ||
dee91e82 | 896 | /* The section the die comes from. |
3019eac3 | 897 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
898 | struct dwarf2_section_info *die_section; |
899 | ||
900 | /* die_section->buffer. */ | |
d521ce57 | 901 | const gdb_byte *buffer; |
f664829e DE |
902 | |
903 | /* The end of the buffer. */ | |
904 | const gdb_byte *buffer_end; | |
a2ce51a0 | 905 | |
685af9cd TT |
906 | /* The abbreviation table to use when reading the DIEs. */ |
907 | struct abbrev_table *abbrev_table; | |
93311388 DE |
908 | }; |
909 | ||
c0ab21c2 TT |
910 | /* A subclass of die_reader_specs that holds storage and has complex |
911 | constructor and destructor behavior. */ | |
912 | ||
913 | class cutu_reader : public die_reader_specs | |
914 | { | |
915 | public: | |
916 | ||
ab432490 SM |
917 | cutu_reader (dwarf2_per_cu_data *this_cu, |
918 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 919 | struct abbrev_table *abbrev_table, |
2e671100 | 920 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
921 | bool skip_partial); |
922 | ||
923 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 924 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
925 | struct dwarf2_cu *parent_cu = nullptr, |
926 | struct dwo_file *dwo_file = nullptr); | |
927 | ||
c0ab21c2 TT |
928 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
929 | ||
930 | const gdb_byte *info_ptr = nullptr; | |
931 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
932 | bool dummy_p = false; |
933 | ||
6751ebae TT |
934 | /* Release the new CU, putting it on the chain. This cannot be done |
935 | for dummy CUs. */ | |
936 | void keep (); | |
937 | ||
c0ab21c2 | 938 | private: |
9e021579 SM |
939 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
940 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 941 | dwarf2_cu *existing_cu); |
c0ab21c2 TT |
942 | |
943 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
944 | std::unique_ptr<dwarf2_cu> m_new_cu; |
945 | ||
946 | /* The ordinary abbreviation table. */ | |
947 | abbrev_table_up m_abbrev_table_holder; | |
948 | ||
949 | /* The DWO abbreviation table. */ | |
950 | abbrev_table_up m_dwo_abbrev_table; | |
951 | }; | |
dee91e82 | 952 | |
c906108c | 953 | /* When we construct a partial symbol table entry we only |
0963b4bd | 954 | need this much information. */ |
6f06d47b | 955 | struct partial_die_info : public allocate_on_obstack |
c906108c | 956 | { |
6f06d47b YQ |
957 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
958 | ||
959 | /* Disable assign but still keep copy ctor, which is needed | |
960 | load_partial_dies. */ | |
961 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
962 | ||
52356b79 YQ |
963 | /* Adjust the partial die before generating a symbol for it. This |
964 | function may set the is_external flag or change the DIE's | |
965 | name. */ | |
966 | void fixup (struct dwarf2_cu *cu); | |
967 | ||
48fbe735 YQ |
968 | /* Read a minimal amount of information into the minimal die |
969 | structure. */ | |
970 | const gdb_byte *read (const struct die_reader_specs *reader, | |
971 | const struct abbrev_info &abbrev, | |
972 | const gdb_byte *info_ptr); | |
973 | ||
7d00ffec TT |
974 | /* Compute the name of this partial DIE. This memoizes the |
975 | result, so it is safe to call multiple times. */ | |
976 | const char *name (dwarf2_cu *cu); | |
977 | ||
72bf9492 | 978 | /* Offset of this DIE. */ |
6f06d47b | 979 | const sect_offset sect_off; |
72bf9492 DJ |
980 | |
981 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 982 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 983 | |
72bf9492 | 984 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
985 | const unsigned int has_children : 1; |
986 | ||
72bf9492 DJ |
987 | unsigned int is_external : 1; |
988 | unsigned int is_declaration : 1; | |
989 | unsigned int has_type : 1; | |
990 | unsigned int has_specification : 1; | |
991 | unsigned int has_pc_info : 1; | |
481860b3 | 992 | unsigned int may_be_inlined : 1; |
72bf9492 | 993 | |
0c1b455e TT |
994 | /* This DIE has been marked DW_AT_main_subprogram. */ |
995 | unsigned int main_subprogram : 1; | |
996 | ||
72bf9492 DJ |
997 | /* Flag set if the SCOPE field of this structure has been |
998 | computed. */ | |
999 | unsigned int scope_set : 1; | |
1000 | ||
fa4028e9 JB |
1001 | /* Flag set if the DIE has a byte_size attribute. */ |
1002 | unsigned int has_byte_size : 1; | |
1003 | ||
ff908ebf AW |
1004 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1005 | unsigned int has_const_value : 1; | |
1006 | ||
98bfdba5 PA |
1007 | /* Flag set if any of the DIE's children are template arguments. */ |
1008 | unsigned int has_template_arguments : 1; | |
1009 | ||
52356b79 | 1010 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1011 | unsigned int fixup_called : 1; |
1012 | ||
36586728 TT |
1013 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1014 | unsigned int is_dwz : 1; | |
1015 | ||
1016 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1017 | unsigned int spec_is_dwz : 1; | |
1018 | ||
7d00ffec TT |
1019 | unsigned int canonical_name : 1; |
1020 | ||
72bf9492 | 1021 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1022 | sometimes a default name for unnamed DIEs. */ |
7d00ffec | 1023 | const char *raw_name = nullptr; |
72bf9492 | 1024 | |
abc72ce4 | 1025 | /* The linkage name, if present. */ |
6f06d47b | 1026 | const char *linkage_name = nullptr; |
abc72ce4 | 1027 | |
72bf9492 DJ |
1028 | /* The scope to prepend to our children. This is generally |
1029 | allocated on the comp_unit_obstack, so will disappear | |
1030 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1031 | const char *scope = nullptr; |
72bf9492 | 1032 | |
95554aad TT |
1033 | /* Some data associated with the partial DIE. The tag determines |
1034 | which field is live. */ | |
1035 | union | |
1036 | { | |
1037 | /* The location description associated with this DIE, if any. */ | |
1038 | struct dwarf_block *locdesc; | |
1039 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1040 | sect_offset sect_off; |
6f06d47b | 1041 | } d {}; |
72bf9492 DJ |
1042 | |
1043 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1044 | CORE_ADDR lowpc = 0; |
1045 | CORE_ADDR highpc = 0; | |
72bf9492 | 1046 | |
93311388 | 1047 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1048 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1049 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1050 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1051 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1052 | |
1053 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1054 | DW_AT_specification (or DW_AT_abstract_origin or | |
1055 | DW_AT_extension). */ | |
6f06d47b | 1056 | sect_offset spec_offset {}; |
72bf9492 DJ |
1057 | |
1058 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1059 | if any. */ | |
6f06d47b YQ |
1060 | struct partial_die_info *die_parent = nullptr; |
1061 | struct partial_die_info *die_child = nullptr; | |
1062 | struct partial_die_info *die_sibling = nullptr; | |
1063 | ||
1064 | friend struct partial_die_info * | |
1065 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1066 | ||
1067 | private: | |
1068 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1069 | partial_die_info (sect_offset sect_off) | |
1070 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1071 | { | |
1072 | } | |
1073 | ||
1074 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1075 | int has_children_) | |
1076 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1077 | { | |
1078 | is_external = 0; | |
1079 | is_declaration = 0; | |
1080 | has_type = 0; | |
1081 | has_specification = 0; | |
1082 | has_pc_info = 0; | |
1083 | may_be_inlined = 0; | |
1084 | main_subprogram = 0; | |
1085 | scope_set = 0; | |
1086 | has_byte_size = 0; | |
1087 | has_const_value = 0; | |
1088 | has_template_arguments = 0; | |
1089 | fixup_called = 0; | |
1090 | is_dwz = 0; | |
1091 | spec_is_dwz = 0; | |
7d00ffec | 1092 | canonical_name = 0; |
6f06d47b | 1093 | } |
c906108c SS |
1094 | }; |
1095 | ||
c906108c SS |
1096 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1097 | but this would require a corresponding change in unpack_field_as_long | |
1098 | and friends. */ | |
1099 | static int bits_per_byte = 8; | |
1100 | ||
9c6a1327 TT |
1101 | struct variant_part_builder; |
1102 | ||
1103 | /* When reading a variant, we track a bit more information about the | |
1104 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1105 | |
1106 | struct variant_field | |
1107 | { | |
9c6a1327 TT |
1108 | int first_field = -1; |
1109 | int last_field = -1; | |
1110 | ||
1111 | /* A variant can contain other variant parts. */ | |
1112 | std::vector<variant_part_builder> variant_parts; | |
1113 | ||
2ddeaf8a TT |
1114 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1115 | default branch. */ | |
9c6a1327 TT |
1116 | bool default_branch = false; |
1117 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1118 | value. */ | |
1119 | ULONGEST discriminant_value = 0; | |
1120 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1121 | data. */ | |
1122 | struct dwarf_block *discr_list_data = nullptr; | |
1123 | }; | |
1124 | ||
1125 | /* This represents a DW_TAG_variant_part. */ | |
1126 | ||
1127 | struct variant_part_builder | |
1128 | { | |
1129 | /* The offset of the discriminant field. */ | |
1130 | sect_offset discriminant_offset {}; | |
1131 | ||
1132 | /* Variants that are direct children of this variant part. */ | |
1133 | std::vector<variant_field> variants; | |
1134 | ||
1135 | /* True if we're currently reading a variant. */ | |
1136 | bool processing_variant = false; | |
2ddeaf8a TT |
1137 | }; |
1138 | ||
52059ffd TT |
1139 | struct nextfield |
1140 | { | |
be2daae6 TT |
1141 | int accessibility = 0; |
1142 | int virtuality = 0; | |
9c6a1327 TT |
1143 | /* Variant parts need to find the discriminant, which is a DIE |
1144 | reference. We track the section offset of each field to make | |
1145 | this link. */ | |
1146 | sect_offset offset; | |
be2daae6 | 1147 | struct field field {}; |
52059ffd TT |
1148 | }; |
1149 | ||
1150 | struct fnfieldlist | |
1151 | { | |
be2daae6 TT |
1152 | const char *name = nullptr; |
1153 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1154 | }; |
1155 | ||
c906108c SS |
1156 | /* The routines that read and process dies for a C struct or C++ class |
1157 | pass lists of data member fields and lists of member function fields | |
1158 | in an instance of a field_info structure, as defined below. */ | |
1159 | struct field_info | |
c5aa993b | 1160 | { |
0963b4bd | 1161 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1162 | std::vector<struct nextfield> fields; |
1163 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1164 | |
85102364 | 1165 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1166 | int non_public_fields = 0; |
c906108c | 1167 | |
c5aa993b JM |
1168 | /* Member function fieldlist array, contains name of possibly overloaded |
1169 | member function, number of overloaded member functions and a pointer | |
1170 | to the head of the member function field chain. */ | |
be2daae6 | 1171 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1172 | |
1173 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1174 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1175 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1176 | |
1177 | /* Nested types defined by this class and the number of elements in this | |
1178 | list. */ | |
be2daae6 | 1179 | std::vector<struct decl_field> nested_types_list; |
317f7127 | 1180 | |
9c6a1327 TT |
1181 | /* If non-null, this is the variant part we are currently |
1182 | reading. */ | |
1183 | variant_part_builder *current_variant_part = nullptr; | |
1184 | /* This holds all the top-level variant parts attached to the type | |
1185 | we're reading. */ | |
1186 | std::vector<variant_part_builder> variant_parts; | |
1187 | ||
317f7127 TT |
1188 | /* Return the total number of fields (including baseclasses). */ |
1189 | int nfields () const | |
1190 | { | |
1191 | return fields.size () + baseclasses.size (); | |
1192 | } | |
c5aa993b | 1193 | }; |
c906108c | 1194 | |
ae038cb0 DJ |
1195 | /* Loaded secondary compilation units are kept in memory until they |
1196 | have not been referenced for the processing of this many | |
1197 | compilation units. Set this to zero to disable caching. Cache | |
1198 | sizes of up to at least twenty will improve startup time for | |
1199 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1200 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1201 | static void |
b4f54984 DE |
1202 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1203 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1204 | { |
3e43a32a | 1205 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1206 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1207 | value); |
1208 | } | |
4390d890 | 1209 | \f |
c906108c SS |
1210 | /* local function prototypes */ |
1211 | ||
918dd910 JK |
1212 | static void dwarf2_find_base_address (struct die_info *die, |
1213 | struct dwarf2_cu *cu); | |
1214 | ||
891813be | 1215 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1216 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1217 | const char *name); | |
0018ea6f | 1218 | |
f1902523 JK |
1219 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1220 | const gdb_byte *info_ptr, | |
3e225074 | 1221 | struct die_info *type_unit_die); |
f1902523 | 1222 | |
976ca316 | 1223 | static void dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile); |
c906108c | 1224 | |
72bf9492 DJ |
1225 | static void scan_partial_symbols (struct partial_die_info *, |
1226 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1227 | int, struct dwarf2_cu *); |
c906108c | 1228 | |
72bf9492 DJ |
1229 | static void add_partial_symbol (struct partial_die_info *, |
1230 | struct dwarf2_cu *); | |
63d06c5c | 1231 | |
72bf9492 DJ |
1232 | static void add_partial_namespace (struct partial_die_info *pdi, |
1233 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1234 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1235 | |
5d7cb8df | 1236 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1237 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1238 | struct dwarf2_cu *cu); |
1239 | ||
72bf9492 DJ |
1240 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1241 | struct dwarf2_cu *cu); | |
91c24f0a | 1242 | |
bc30ff58 JB |
1243 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1244 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1245 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1246 | |
d521ce57 | 1247 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1248 | |
dee91e82 | 1249 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1250 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1251 | |
fb816e8b TV |
1252 | /* A pair of partial_die_info and compilation unit. */ |
1253 | struct cu_partial_die_info | |
1254 | { | |
1255 | /* The compilation unit of the partial_die_info. */ | |
1256 | struct dwarf2_cu *cu; | |
1257 | /* A partial_die_info. */ | |
1258 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1259 | |
1260 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1261 | : cu (cu), | |
1262 | pdi (pdi) | |
405feb71 | 1263 | { /* Nothing. */ } |
122cf0f2 AB |
1264 | |
1265 | private: | |
1266 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1267 | }; |
1268 | ||
122cf0f2 AB |
1269 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1270 | struct dwarf2_cu *); | |
72bf9492 | 1271 | |
d521ce57 TT |
1272 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1273 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1274 | const gdb_byte *, bool *need_reprocess); |
1275 | ||
1276 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1277 | struct attribute *attr); | |
1278 | ||
1279 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1280 | |
976ca316 SM |
1281 | static sect_offset read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
1282 | dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1283 | |
ed2dc618 | 1284 | static const char *read_indirect_string |
976ca316 | 1285 | (dwarf2_per_objfile *per_objfile, bfd *, const gdb_byte *, |
ed2dc618 | 1286 | const struct comp_unit_head *, unsigned int *); |
4bdf3d34 | 1287 | |
ed2dc618 | 1288 | static const char *read_indirect_string_at_offset |
976ca316 | 1289 | (dwarf2_per_objfile *per_objfile, LONGEST str_offset); |
927aa2e7 | 1290 | |
d521ce57 TT |
1291 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1292 | const gdb_byte *, | |
3019eac3 DE |
1293 | unsigned int *); |
1294 | ||
18a8505e AT |
1295 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1296 | ULONGEST str_index); | |
1297 | ||
1298 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1299 | ULONGEST str_index); | |
3019eac3 | 1300 | |
e142c38c | 1301 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1302 | |
e142c38c DJ |
1303 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1304 | struct dwarf2_cu *); | |
c906108c | 1305 | |
7d45c7c3 KB |
1306 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1307 | struct dwarf2_cu *cu); | |
1308 | ||
a084a2a6 AT |
1309 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1310 | ||
05cf31d1 JB |
1311 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1312 | struct dwarf2_cu *cu); | |
1313 | ||
e142c38c | 1314 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1315 | |
e142c38c | 1316 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1317 | struct dwarf2_cu **); |
63d06c5c | 1318 | |
9c541725 | 1319 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1320 | struct dwarf2_cu *cu); |
debd256d | 1321 | |
f3f5162e | 1322 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1323 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1324 | CORE_ADDR, int decode_mapping); |
c906108c | 1325 | |
804d2729 TT |
1326 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1327 | const char *); | |
c906108c | 1328 | |
a14ed312 | 1329 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1330 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1331 | |
ff39bb5e | 1332 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1333 | struct dwarf2_cu *); |
c906108c | 1334 | |
ff39bb5e | 1335 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1336 | struct type *type, |
1337 | const char *name, | |
1338 | struct obstack *obstack, | |
12df843f | 1339 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1340 | const gdb_byte **bytes, |
98bfdba5 | 1341 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1342 | |
e7c27a73 | 1343 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1344 | |
b4ba55a1 JB |
1345 | static int need_gnat_info (struct dwarf2_cu *); |
1346 | ||
3e43a32a MS |
1347 | static struct type *die_descriptive_type (struct die_info *, |
1348 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1349 | |
1350 | static void set_descriptive_type (struct type *, struct die_info *, | |
1351 | struct dwarf2_cu *); | |
1352 | ||
e7c27a73 DJ |
1353 | static struct type *die_containing_type (struct die_info *, |
1354 | struct dwarf2_cu *); | |
c906108c | 1355 | |
ff39bb5e | 1356 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1357 | struct dwarf2_cu *); |
c906108c | 1358 | |
f792889a | 1359 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1360 | |
673bfd45 DE |
1361 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1362 | ||
0d5cff50 | 1363 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1364 | |
6e70227d | 1365 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1366 | const char *suffix, int physname, |
1367 | struct dwarf2_cu *cu); | |
63d06c5c | 1368 | |
e7c27a73 | 1369 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1370 | |
348e048f DE |
1371 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1372 | ||
e7c27a73 | 1373 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1374 | |
e7c27a73 | 1375 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1376 | |
96408a79 SA |
1377 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1378 | ||
71a3c369 TT |
1379 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1380 | ||
ff013f42 | 1381 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1382 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1383 | |
41144253 | 1384 | /* Return the .debug_loclists section to use for cu. */ |
1385 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1386 | ||
3a2b436a | 1387 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1388 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1389 | enum pc_bounds_kind |
1390 | { | |
e385593e | 1391 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1392 | PC_BOUNDS_NOT_PRESENT, |
1393 | ||
e385593e JK |
1394 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1395 | were present but they do not form a valid range of PC addresses. */ | |
1396 | PC_BOUNDS_INVALID, | |
1397 | ||
3a2b436a JK |
1398 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1399 | PC_BOUNDS_RANGES, | |
1400 | ||
1401 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1402 | PC_BOUNDS_HIGH_LOW, | |
1403 | }; | |
1404 | ||
1405 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1406 | CORE_ADDR *, CORE_ADDR *, | |
1407 | struct dwarf2_cu *, | |
891813be | 1408 | dwarf2_psymtab *); |
c906108c | 1409 | |
fae299cd DC |
1410 | static void get_scope_pc_bounds (struct die_info *, |
1411 | CORE_ADDR *, CORE_ADDR *, | |
1412 | struct dwarf2_cu *); | |
1413 | ||
801e3a5b JB |
1414 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1415 | CORE_ADDR, struct dwarf2_cu *); | |
1416 | ||
a14ed312 | 1417 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1418 | struct dwarf2_cu *); |
c906108c | 1419 | |
a14ed312 | 1420 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1421 | struct type *, struct dwarf2_cu *); |
c906108c | 1422 | |
a14ed312 | 1423 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1424 | struct die_info *, struct type *, |
e7c27a73 | 1425 | struct dwarf2_cu *); |
c906108c | 1426 | |
a14ed312 | 1427 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1428 | struct type *, |
1429 | struct dwarf2_cu *); | |
c906108c | 1430 | |
134d01f1 | 1431 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1432 | |
e7c27a73 | 1433 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1434 | |
e7c27a73 | 1435 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1436 | |
5d7cb8df JK |
1437 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1438 | ||
804d2729 | 1439 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1440 | |
27aa8d6a SW |
1441 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1442 | ||
74921315 KS |
1443 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1444 | ||
f55ee35c JK |
1445 | static struct type *read_module_type (struct die_info *die, |
1446 | struct dwarf2_cu *cu); | |
1447 | ||
38d518c9 | 1448 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1449 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1450 | |
134d01f1 | 1451 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1452 | |
7d79de9a TT |
1453 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1454 | bool * = nullptr); | |
c906108c | 1455 | |
6e70227d | 1456 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1457 | struct dwarf2_cu *); |
1458 | ||
bf6af496 | 1459 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1460 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1461 | struct die_info *); |
639d11d3 | 1462 | |
dee91e82 | 1463 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1464 | const gdb_byte *info_ptr, |
1465 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1466 | struct die_info *parent); |
1467 | ||
d521ce57 TT |
1468 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1469 | struct die_info **, const gdb_byte *, | |
3e225074 | 1470 | int); |
3019eac3 | 1471 | |
d521ce57 | 1472 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1473 | struct die_info **, const gdb_byte *); |
93311388 | 1474 | |
e7c27a73 | 1475 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1476 | |
15d034d0 | 1477 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1478 | struct objfile *); |
71c25dea | 1479 | |
15d034d0 | 1480 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1481 | |
15d034d0 | 1482 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1483 | struct die_info *die, |
1484 | struct dwarf2_cu *cu); | |
1485 | ||
ca69b9e6 DE |
1486 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1487 | struct dwarf2_cu *cu); | |
1488 | ||
e142c38c | 1489 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1490 | struct dwarf2_cu **); |
9219021c | 1491 | |
d97bc12b DE |
1492 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1493 | ||
1494 | static void dump_die_for_error (struct die_info *); | |
1495 | ||
1496 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1497 | struct die_info *); | |
c906108c | 1498 | |
d97bc12b | 1499 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1500 | |
51545339 | 1501 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1502 | struct dwarf2_cu *); |
c906108c | 1503 | |
348e048f | 1504 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1505 | const struct attribute *, |
348e048f DE |
1506 | struct dwarf2_cu **); |
1507 | ||
10b3939b | 1508 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1509 | const struct attribute *, |
f2f0e013 | 1510 | struct dwarf2_cu **); |
c906108c | 1511 | |
348e048f | 1512 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1513 | const struct attribute *, |
348e048f DE |
1514 | struct dwarf2_cu **); |
1515 | ||
ac9ec31b DE |
1516 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1517 | struct dwarf2_cu *); | |
1518 | ||
1519 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1520 | const struct attribute *, |
ac9ec31b DE |
1521 | struct dwarf2_cu *); |
1522 | ||
ab432490 SM |
1523 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1524 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1525 | |
ab432490 SM |
1526 | static void read_signatured_type (signatured_type *sig_type, |
1527 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1528 | |
63e43d3a PMR |
1529 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1530 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1531 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1532 | |
c906108c SS |
1533 | /* memory allocation interface */ |
1534 | ||
7b5a2f43 | 1535 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1536 | |
b60c80d6 | 1537 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1538 | |
43f3e411 | 1539 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1540 | |
8cf6f0b1 TT |
1541 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1542 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1543 | const struct attribute *attr); |
8cf6f0b1 | 1544 | |
ff39bb5e | 1545 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1546 | struct symbol *sym, |
f1e6e072 TT |
1547 | struct dwarf2_cu *cu, |
1548 | int is_block); | |
4c2df51b | 1549 | |
d521ce57 TT |
1550 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1551 | const gdb_byte *info_ptr, | |
1552 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1553 | |
72bf9492 DJ |
1554 | static hashval_t partial_die_hash (const void *item); |
1555 | ||
1556 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1557 | ||
ae038cb0 | 1558 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 | 1559 | (sect_offset sect_off, unsigned int offset_in_dwz, |
976ca316 | 1560 | dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1561 | |
9816fde3 | 1562 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1563 | struct die_info *comp_unit_die, |
1564 | enum language pretend_language); | |
93311388 | 1565 | |
f792889a DJ |
1566 | static struct type *set_die_type (struct die_info *, struct type *, |
1567 | struct dwarf2_cu *); | |
1c379e20 | 1568 | |
976ca316 | 1569 | static void create_all_comp_units (dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1570 | |
976ca316 | 1571 | static int create_all_type_units (dwarf2_per_objfile *per_objfile); |
1fd400ff | 1572 | |
ab432490 SM |
1573 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1574 | dwarf2_per_objfile *per_objfile, | |
1575 | bool skip_partial, | |
1576 | enum language pretend_language); | |
10b3939b | 1577 | |
8fc0b21d | 1578 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1579 | enum language pretend_language); |
10b3939b | 1580 | |
8fc0b21d | 1581 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1582 | enum language pretend_language); |
f4dc4d17 | 1583 | |
10b3939b DJ |
1584 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1585 | struct dwarf2_per_cu_data *); | |
1586 | ||
ae038cb0 DJ |
1587 | static void dwarf2_mark (struct dwarf2_cu *); |
1588 | ||
b64f50a1 | 1589 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1590 | dwarf2_per_cu_data *per_cu, |
1591 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1592 | |
f792889a | 1593 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1594 | |
120ce1b5 SM |
1595 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1596 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1597 | enum language pretend_language); |
1598 | ||
976ca316 | 1599 | static void process_queue (dwarf2_per_objfile *per_objfile); |
9291a0cd | 1600 | |
b303c6f6 AB |
1601 | /* Class, the destructor of which frees all allocated queue entries. This |
1602 | will only have work to do if an error was thrown while processing the | |
1603 | dwarf. If no error was thrown then the queue entries should have all | |
1604 | been processed, and freed, as we went along. */ | |
1605 | ||
1606 | class dwarf2_queue_guard | |
1607 | { | |
1608 | public: | |
39856def TT |
1609 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1610 | : m_per_objfile (per_objfile) | |
1611 | { | |
1612 | } | |
b303c6f6 AB |
1613 | |
1614 | /* Free any entries remaining on the queue. There should only be | |
1615 | entries left if we hit an error while processing the dwarf. */ | |
1616 | ~dwarf2_queue_guard () | |
1617 | { | |
39856def TT |
1618 | /* Ensure that no memory is allocated by the queue. */ |
1619 | std::queue<dwarf2_queue_item> empty; | |
5989a64e | 1620 | std::swap (m_per_objfile->per_bfd->queue, empty); |
39856def | 1621 | } |
b303c6f6 | 1622 | |
39856def | 1623 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1624 | |
39856def TT |
1625 | private: |
1626 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1627 | }; |
1628 | ||
39856def TT |
1629 | dwarf2_queue_item::~dwarf2_queue_item () |
1630 | { | |
1631 | /* Anything still marked queued is likely to be in an | |
1632 | inconsistent state, so discard it. */ | |
1633 | if (per_cu->queued) | |
1634 | { | |
7188ed02 | 1635 | per_objfile->remove_cu (per_cu); |
39856def TT |
1636 | per_cu->queued = 0; |
1637 | } | |
1638 | } | |
1639 | ||
d721ba37 PA |
1640 | /* The return type of find_file_and_directory. Note, the enclosed |
1641 | string pointers are only valid while this object is valid. */ | |
1642 | ||
1643 | struct file_and_directory | |
1644 | { | |
1645 | /* The filename. This is never NULL. */ | |
1646 | const char *name; | |
1647 | ||
1648 | /* The compilation directory. NULL if not known. If we needed to | |
1649 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1650 | points directly to the DW_AT_comp_dir string attribute owned by | |
1651 | the obstack that owns the DIE. */ | |
1652 | const char *comp_dir; | |
1653 | ||
1654 | /* If we needed to build a new string for comp_dir, this is what | |
1655 | owns the storage. */ | |
1656 | std::string comp_dir_storage; | |
1657 | }; | |
1658 | ||
1659 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1660 | struct dwarf2_cu *cu); | |
9291a0cd | 1661 | |
298e9637 | 1662 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1663 | |
298e9637 | 1664 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1665 | |
57d63ce2 | 1666 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
976ca316 SM |
1667 | (dwarf2_per_objfile *per_objfile, struct dwp_file *dwp_file, |
1668 | const char *comp_dir, ULONGEST signature, int is_debug_types); | |
a2ce51a0 | 1669 | |
976ca316 | 1670 | static struct dwp_file *get_dwp_file (dwarf2_per_objfile *per_objfile); |
a2ce51a0 | 1671 | |
3019eac3 | 1672 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1673 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1674 | ULONGEST signature); | |
3019eac3 DE |
1675 | |
1676 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1677 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1678 | |
1b555f17 | 1679 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1680 | |
263db9a1 TT |
1681 | /* A unique pointer to a dwo_file. */ |
1682 | ||
51ac9db5 | 1683 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1684 | |
976ca316 | 1685 | static void process_cu_includes (dwarf2_per_objfile *per_objfile); |
95554aad | 1686 | |
1b80a9fa | 1687 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1688 | |
1689 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1690 | \f |
1691 | /* Various complaints about symbol reading that don't abort the process. */ | |
1692 | ||
4390d890 DE |
1693 | static void |
1694 | dwarf2_debug_line_missing_file_complaint (void) | |
1695 | { | |
b98664d3 | 1696 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1697 | } |
1698 | ||
1699 | static void | |
1700 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1701 | { | |
b98664d3 | 1702 | complaint (_(".debug_line section has line " |
4390d890 DE |
1703 | "program sequence without an end")); |
1704 | } | |
1705 | ||
1706 | static void | |
1707 | dwarf2_complex_location_expr_complaint (void) | |
1708 | { | |
b98664d3 | 1709 | complaint (_("location expression too complex")); |
4390d890 DE |
1710 | } |
1711 | ||
1712 | static void | |
1713 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1714 | int arg3) | |
1715 | { | |
b98664d3 | 1716 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1717 | arg1, arg2, arg3); |
1718 | } | |
1719 | ||
4390d890 DE |
1720 | static void |
1721 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1722 | { | |
b98664d3 | 1723 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1724 | arg1, arg2); |
1725 | } | |
527f3840 JK |
1726 | |
1727 | /* Hash function for line_header_hash. */ | |
1728 | ||
1729 | static hashval_t | |
1730 | line_header_hash (const struct line_header *ofs) | |
1731 | { | |
9c541725 | 1732 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1733 | } |
1734 | ||
1735 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1736 | ||
1737 | static hashval_t | |
1738 | line_header_hash_voidp (const void *item) | |
1739 | { | |
9a3c8263 | 1740 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1741 | |
1742 | return line_header_hash (ofs); | |
1743 | } | |
1744 | ||
1745 | /* Equality function for line_header_hash. */ | |
1746 | ||
1747 | static int | |
1748 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1749 | { | |
9a3c8263 SM |
1750 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1751 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1752 | |
9c541725 | 1753 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1754 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1755 | } | |
1756 | ||
4390d890 | 1757 | \f |
9291a0cd | 1758 | |
330cdd98 PA |
1759 | /* See declaration. */ |
1760 | ||
5989a64e SM |
1761 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1762 | bool can_copy_) | |
c3699833 SM |
1763 | : obfd (obfd), |
1764 | can_copy (can_copy_) | |
330cdd98 PA |
1765 | { |
1766 | if (names == NULL) | |
1767 | names = &dwarf2_elf_names; | |
1768 | ||
330cdd98 PA |
1769 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1770 | locate_sections (obfd, sec, *names); | |
1771 | } | |
1772 | ||
5989a64e | 1773 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1774 | { |
b76e467d | 1775 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1776 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1777 | |
b2bdb8cf | 1778 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1779 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1780 | |
5989a64e | 1781 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1782 | } |
1783 | ||
7188ed02 | 1784 | /* See read.h. */ |
330cdd98 PA |
1785 | |
1786 | void | |
7188ed02 | 1787 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1788 | { |
7188ed02 SM |
1789 | for (auto pair : m_dwarf2_cus) |
1790 | delete pair.second; | |
330cdd98 | 1791 | |
7188ed02 | 1792 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1793 | } |
1794 | ||
11ed8cad TT |
1795 | /* A helper class that calls free_cached_comp_units on |
1796 | destruction. */ | |
1797 | ||
1798 | class free_cached_comp_units | |
1799 | { | |
1800 | public: | |
1801 | ||
1802 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1803 | : m_per_objfile (per_objfile) | |
1804 | { | |
1805 | } | |
1806 | ||
1807 | ~free_cached_comp_units () | |
1808 | { | |
7188ed02 | 1809 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1810 | } |
1811 | ||
1812 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1813 | ||
1814 | private: | |
1815 | ||
1816 | dwarf2_per_objfile *m_per_objfile; | |
1817 | }; | |
1818 | ||
af758d11 SM |
1819 | /* See read.h. */ |
1820 | ||
1821 | bool | |
1822 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1823 | { | |
1824 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1825 | ||
1826 | return this->m_symtabs[per_cu->index] != nullptr; | |
1827 | } | |
1828 | ||
1829 | /* See read.h. */ | |
1830 | ||
1831 | compunit_symtab * | |
1832 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1833 | { | |
1834 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1835 | ||
1836 | return this->m_symtabs[per_cu->index]; | |
1837 | } | |
1838 | ||
1839 | /* See read.h. */ | |
1840 | ||
1841 | void | |
1842 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1843 | compunit_symtab *symtab) | |
1844 | { | |
1845 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1846 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1847 | ||
1848 | this->m_symtabs[per_cu->index] = symtab; | |
1849 | } | |
1850 | ||
c906108c | 1851 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1852 | information and return true if we have enough to do something. |
1853 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1854 | ELF names are used. CAN_COPY is true for formats where symbol |
1855 | interposition is possible and so symbol values must follow copy | |
1856 | relocation rules. */ | |
c906108c SS |
1857 | |
1858 | int | |
251d32d9 | 1859 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
1860 | const struct dwarf2_debug_sections *names, |
1861 | bool can_copy) | |
c906108c | 1862 | { |
97cbe998 SDJ |
1863 | if (objfile->flags & OBJF_READNEVER) |
1864 | return 0; | |
1865 | ||
976ca316 | 1866 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 1867 | |
976ca316 | 1868 | if (per_objfile == NULL) |
5989a64e | 1869 | { |
17ee85fc TT |
1870 | dwarf2_per_bfd *per_bfd; |
1871 | ||
1872 | /* We can share a "dwarf2_per_bfd" with other objfiles if the BFD | |
1873 | doesn't require relocations and if there aren't partial symbols | |
1874 | from some other reader. */ | |
1875 | if (!objfile_has_partial_symbols (objfile) | |
1876 | && !gdb_bfd_requires_relocations (objfile->obfd)) | |
1877 | { | |
1878 | /* See if one has been created for this BFD yet. */ | |
1879 | per_bfd = dwarf2_per_bfd_bfd_data_key.get (objfile->obfd); | |
1880 | ||
1881 | if (per_bfd == nullptr) | |
1882 | { | |
1883 | /* No, create it now. */ | |
1884 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1885 | dwarf2_per_bfd_bfd_data_key.set (objfile->obfd, per_bfd); | |
1886 | } | |
1887 | } | |
1888 | else | |
1889 | { | |
1890 | /* No sharing possible, create one specifically for this objfile. */ | |
1891 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1892 | dwarf2_per_bfd_objfile_data_key.set (objfile, per_bfd); | |
1893 | } | |
5989a64e | 1894 | |
976ca316 | 1895 | per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); |
5989a64e | 1896 | } |
5bfd760d | 1897 | |
976ca316 SM |
1898 | return (!per_objfile->per_bfd->info.is_virtual |
1899 | && per_objfile->per_bfd->info.s.section != NULL | |
1900 | && !per_objfile->per_bfd->abbrev.is_virtual | |
1901 | && per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
1902 | } |
1903 | ||
251d32d9 TG |
1904 | /* When loading sections, we look either for uncompressed section or for |
1905 | compressed section names. */ | |
233a11ab CS |
1906 | |
1907 | static int | |
251d32d9 TG |
1908 | section_is_p (const char *section_name, |
1909 | const struct dwarf2_section_names *names) | |
233a11ab | 1910 | { |
251d32d9 TG |
1911 | if (names->normal != NULL |
1912 | && strcmp (section_name, names->normal) == 0) | |
1913 | return 1; | |
1914 | if (names->compressed != NULL | |
1915 | && strcmp (section_name, names->compressed) == 0) | |
1916 | return 1; | |
1917 | return 0; | |
233a11ab CS |
1918 | } |
1919 | ||
330cdd98 | 1920 | /* See declaration. */ |
c906108c | 1921 | |
330cdd98 | 1922 | void |
5989a64e SM |
1923 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
1924 | const dwarf2_debug_sections &names) | |
c906108c | 1925 | { |
fd361982 | 1926 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1927 | |
dc7650b8 JK |
1928 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1929 | { | |
1930 | } | |
950b7495 KS |
1931 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1932 | > bfd_get_file_size (abfd)) | |
1933 | { | |
1934 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1935 | warning (_("Discarding section %s which has a section size (%s" | |
1936 | ") larger than the file size [in module %s]"), | |
1937 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1938 | bfd_get_filename (abfd)); | |
1939 | } | |
330cdd98 | 1940 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1941 | { |
330cdd98 | 1942 | this->info.s.section = sectp; |
fd361982 | 1943 | this->info.size = bfd_section_size (sectp); |
c906108c | 1944 | } |
330cdd98 | 1945 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 1946 | { |
330cdd98 | 1947 | this->abbrev.s.section = sectp; |
fd361982 | 1948 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 1949 | } |
330cdd98 | 1950 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 1951 | { |
330cdd98 | 1952 | this->line.s.section = sectp; |
fd361982 | 1953 | this->line.size = bfd_section_size (sectp); |
c906108c | 1954 | } |
330cdd98 | 1955 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 1956 | { |
330cdd98 | 1957 | this->loc.s.section = sectp; |
fd361982 | 1958 | this->loc.size = bfd_section_size (sectp); |
c906108c | 1959 | } |
330cdd98 | 1960 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 1961 | { |
330cdd98 | 1962 | this->loclists.s.section = sectp; |
fd361982 | 1963 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 1964 | } |
330cdd98 | 1965 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 1966 | { |
330cdd98 | 1967 | this->macinfo.s.section = sectp; |
fd361982 | 1968 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 1969 | } |
330cdd98 | 1970 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 1971 | { |
330cdd98 | 1972 | this->macro.s.section = sectp; |
fd361982 | 1973 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 1974 | } |
330cdd98 | 1975 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 1976 | { |
330cdd98 | 1977 | this->str.s.section = sectp; |
fd361982 | 1978 | this->str.size = bfd_section_size (sectp); |
c906108c | 1979 | } |
18a8505e AT |
1980 | else if (section_is_p (sectp->name, &names.str_offsets)) |
1981 | { | |
1982 | this->str_offsets.s.section = sectp; | |
1983 | this->str_offsets.size = bfd_section_size (sectp); | |
1984 | } | |
330cdd98 | 1985 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 1986 | { |
330cdd98 | 1987 | this->line_str.s.section = sectp; |
fd361982 | 1988 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 1989 | } |
330cdd98 | 1990 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 1991 | { |
330cdd98 | 1992 | this->addr.s.section = sectp; |
fd361982 | 1993 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 1994 | } |
330cdd98 | 1995 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 1996 | { |
330cdd98 | 1997 | this->frame.s.section = sectp; |
fd361982 | 1998 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 1999 | } |
330cdd98 | 2000 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2001 | { |
330cdd98 | 2002 | this->eh_frame.s.section = sectp; |
fd361982 | 2003 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2004 | } |
330cdd98 | 2005 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2006 | { |
330cdd98 | 2007 | this->ranges.s.section = sectp; |
fd361982 | 2008 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2009 | } |
330cdd98 | 2010 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2011 | { |
330cdd98 | 2012 | this->rnglists.s.section = sectp; |
fd361982 | 2013 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2014 | } |
330cdd98 | 2015 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2016 | { |
8b70b953 TT |
2017 | struct dwarf2_section_info type_section; |
2018 | ||
2019 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2020 | type_section.s.section = sectp; |
fd361982 | 2021 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2022 | |
fd5866f6 | 2023 | this->types.push_back (type_section); |
348e048f | 2024 | } |
330cdd98 | 2025 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2026 | { |
330cdd98 | 2027 | this->gdb_index.s.section = sectp; |
fd361982 | 2028 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2029 | } |
927aa2e7 JK |
2030 | else if (section_is_p (sectp->name, &names.debug_names)) |
2031 | { | |
2032 | this->debug_names.s.section = sectp; | |
fd361982 | 2033 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2034 | } |
2035 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2036 | { | |
2037 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2038 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2039 | } |
dce234bc | 2040 | |
fd361982 AM |
2041 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2042 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2043 | this->has_section_at_zero = true; |
c906108c SS |
2044 | } |
2045 | ||
dce234bc | 2046 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2047 | SECTION_NAME. */ |
af34e669 | 2048 | |
dce234bc | 2049 | void |
3017a003 TG |
2050 | dwarf2_get_section_info (struct objfile *objfile, |
2051 | enum dwarf2_section_enum sect, | |
d521ce57 | 2052 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2053 | bfd_size_type *sizep) |
2054 | { | |
976ca316 | 2055 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
dce234bc | 2056 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2057 | |
2058 | /* We may see an objfile without any DWARF, in which case we just | |
2059 | return nothing. */ | |
976ca316 | 2060 | if (per_objfile == NULL) |
a3b2a86b TT |
2061 | { |
2062 | *sectp = NULL; | |
2063 | *bufp = NULL; | |
2064 | *sizep = 0; | |
2065 | return; | |
2066 | } | |
3017a003 TG |
2067 | switch (sect) |
2068 | { | |
2069 | case DWARF2_DEBUG_FRAME: | |
976ca316 | 2070 | info = &per_objfile->per_bfd->frame; |
3017a003 TG |
2071 | break; |
2072 | case DWARF2_EH_FRAME: | |
976ca316 | 2073 | info = &per_objfile->per_bfd->eh_frame; |
3017a003 TG |
2074 | break; |
2075 | default: | |
2076 | gdb_assert_not_reached ("unexpected section"); | |
2077 | } | |
dce234bc | 2078 | |
96b79293 | 2079 | info->read (objfile); |
dce234bc | 2080 | |
96b79293 | 2081 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2082 | *bufp = info->buffer; |
2083 | *sizep = info->size; | |
2084 | } | |
2085 | ||
36586728 TT |
2086 | /* A helper function to find the sections for a .dwz file. */ |
2087 | ||
2088 | static void | |
2089 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2090 | { | |
9a3c8263 | 2091 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2092 | |
2093 | /* Note that we only support the standard ELF names, because .dwz | |
2094 | is ELF-only (at the time of writing). */ | |
2095 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2096 | { | |
049412e3 | 2097 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2098 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2099 | } |
2100 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2101 | { | |
049412e3 | 2102 | dwz_file->info.s.section = sectp; |
fd361982 | 2103 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2104 | } |
2105 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2106 | { | |
049412e3 | 2107 | dwz_file->str.s.section = sectp; |
fd361982 | 2108 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2109 | } |
2110 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2111 | { | |
049412e3 | 2112 | dwz_file->line.s.section = sectp; |
fd361982 | 2113 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2114 | } |
2115 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2116 | { | |
049412e3 | 2117 | dwz_file->macro.s.section = sectp; |
fd361982 | 2118 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2119 | } |
2ec9a5e0 TT |
2120 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2121 | { | |
049412e3 | 2122 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2123 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2124 | } |
927aa2e7 JK |
2125 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2126 | { | |
2127 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2128 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2129 | } |
36586728 TT |
2130 | } |
2131 | ||
c4973306 | 2132 | /* See dwarf2read.h. */ |
36586728 | 2133 | |
c4973306 | 2134 | struct dwz_file * |
c3699833 | 2135 | dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd) |
36586728 | 2136 | { |
36586728 | 2137 | const char *filename; |
acd13123 | 2138 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2139 | size_t buildid_len; |
2140 | bfd_byte *buildid; | |
36586728 | 2141 | |
c3699833 SM |
2142 | if (per_bfd->dwz_file != NULL) |
2143 | return per_bfd->dwz_file.get (); | |
36586728 | 2144 | |
4db1a1dc | 2145 | bfd_set_error (bfd_error_no_error); |
791afaa2 | 2146 | gdb::unique_xmalloc_ptr<char> data |
c3699833 | 2147 | (bfd_get_alt_debug_link_info (per_bfd->obfd, |
791afaa2 | 2148 | &buildid_len_arg, &buildid)); |
4db1a1dc TT |
2149 | if (data == NULL) |
2150 | { | |
2151 | if (bfd_get_error () == bfd_error_no_error) | |
2152 | return NULL; | |
2153 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2154 | bfd_errmsg (bfd_get_error ())); | |
2155 | } | |
791afaa2 TT |
2156 | |
2157 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2158 | |
acd13123 TT |
2159 | buildid_len = (size_t) buildid_len_arg; |
2160 | ||
791afaa2 | 2161 | filename = data.get (); |
d721ba37 PA |
2162 | |
2163 | std::string abs_storage; | |
36586728 TT |
2164 | if (!IS_ABSOLUTE_PATH (filename)) |
2165 | { | |
14278e1f | 2166 | gdb::unique_xmalloc_ptr<char> abs |
c3699833 | 2167 | = gdb_realpath (bfd_get_filename (per_bfd->obfd)); |
36586728 | 2168 | |
14278e1f | 2169 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2170 | filename = abs_storage.c_str (); |
36586728 TT |
2171 | } |
2172 | ||
dc294be5 TT |
2173 | /* First try the file name given in the section. If that doesn't |
2174 | work, try to use the build-id instead. */ | |
ad80db5b | 2175 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget)); |
dc294be5 | 2176 | if (dwz_bfd != NULL) |
36586728 | 2177 | { |
192b62ce | 2178 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2179 | dwz_bfd.reset (nullptr); |
36586728 TT |
2180 | } |
2181 | ||
dc294be5 TT |
2182 | if (dwz_bfd == NULL) |
2183 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2184 | ||
0d79cdc4 AM |
2185 | if (dwz_bfd == nullptr) |
2186 | { | |
2187 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
c3699833 | 2188 | const char *origname = bfd_get_filename (per_bfd->obfd); |
0d79cdc4 AM |
2189 | |
2190 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2191 | buildid_len, | |
2192 | origname, | |
2193 | &alt_filename)); | |
2194 | ||
2195 | if (fd.get () >= 0) | |
2196 | { | |
2197 | /* File successfully retrieved from server. */ | |
ad80db5b | 2198 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget); |
0d79cdc4 AM |
2199 | |
2200 | if (dwz_bfd == nullptr) | |
2201 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2202 | alt_filename.get ()); | |
2203 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2204 | dwz_bfd.reset (nullptr); | |
2205 | } | |
2206 | } | |
2207 | ||
dc294be5 TT |
2208 | if (dwz_bfd == NULL) |
2209 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
c3699833 | 2210 | bfd_get_filename (per_bfd->obfd)); |
dc294be5 | 2211 | |
7ff8cb8c TT |
2212 | std::unique_ptr<struct dwz_file> result |
2213 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2214 | |
7ff8cb8c TT |
2215 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2216 | result.get ()); | |
36586728 | 2217 | |
c3699833 SM |
2218 | gdb_bfd_record_inclusion (per_bfd->obfd, result->dwz_bfd.get ()); |
2219 | per_bfd->dwz_file = std::move (result); | |
2220 | return per_bfd->dwz_file.get (); | |
36586728 | 2221 | } |
9291a0cd | 2222 | \f |
7b9f3c50 DE |
2223 | /* DWARF quick_symbols_functions support. */ |
2224 | ||
2225 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2226 | unique line tables, so we maintain a separate table of all .debug_line | |
2227 | derived entries to support the sharing. | |
2228 | All the quick functions need is the list of file names. We discard the | |
2229 | line_header when we're done and don't need to record it here. */ | |
2230 | struct quick_file_names | |
2231 | { | |
094b34ac DE |
2232 | /* The data used to construct the hash key. */ |
2233 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2234 | |
2235 | /* The number of entries in file_names, real_names. */ | |
2236 | unsigned int num_file_names; | |
2237 | ||
2238 | /* The file names from the line table, after being run through | |
2239 | file_full_name. */ | |
2240 | const char **file_names; | |
2241 | ||
2242 | /* The file names from the line table after being run through | |
2243 | gdb_realpath. These are computed lazily. */ | |
2244 | const char **real_names; | |
2245 | }; | |
2246 | ||
2247 | /* When using the index (and thus not using psymtabs), each CU has an | |
2248 | object of this type. This is used to hold information needed by | |
2249 | the various "quick" methods. */ | |
2250 | struct dwarf2_per_cu_quick_data | |
2251 | { | |
2252 | /* The file table. This can be NULL if there was no file table | |
2253 | or it's currently not read in. | |
5989a64e | 2254 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2255 | struct quick_file_names *file_names; |
2256 | ||
7b9f3c50 DE |
2257 | /* A temporary mark bit used when iterating over all CUs in |
2258 | expand_symtabs_matching. */ | |
2259 | unsigned int mark : 1; | |
2260 | ||
2261 | /* True if we've tried to read the file table and found there isn't one. | |
2262 | There will be no point in trying to read it again next time. */ | |
2263 | unsigned int no_file_data : 1; | |
2264 | }; | |
2265 | ||
094b34ac DE |
2266 | /* Utility hash function for a stmt_list_hash. */ |
2267 | ||
2268 | static hashval_t | |
2269 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2270 | { | |
2271 | hashval_t v = 0; | |
2272 | ||
2273 | if (stmt_list_hash->dwo_unit != NULL) | |
2274 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2275 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2276 | return v; |
2277 | } | |
2278 | ||
2279 | /* Utility equality function for a stmt_list_hash. */ | |
2280 | ||
2281 | static int | |
2282 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2283 | const struct stmt_list_hash *rhs) | |
2284 | { | |
2285 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2286 | return 0; | |
2287 | if (lhs->dwo_unit != NULL | |
2288 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2289 | return 0; | |
2290 | ||
9c541725 | 2291 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2292 | } |
2293 | ||
7b9f3c50 DE |
2294 | /* Hash function for a quick_file_names. */ |
2295 | ||
2296 | static hashval_t | |
2297 | hash_file_name_entry (const void *e) | |
2298 | { | |
9a3c8263 SM |
2299 | const struct quick_file_names *file_data |
2300 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2301 | |
094b34ac | 2302 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2303 | } |
2304 | ||
2305 | /* Equality function for a quick_file_names. */ | |
2306 | ||
2307 | static int | |
2308 | eq_file_name_entry (const void *a, const void *b) | |
2309 | { | |
9a3c8263 SM |
2310 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2311 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2312 | |
094b34ac | 2313 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2314 | } |
2315 | ||
2316 | /* Delete function for a quick_file_names. */ | |
2317 | ||
2318 | static void | |
2319 | delete_file_name_entry (void *e) | |
2320 | { | |
9a3c8263 | 2321 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2322 | int i; |
2323 | ||
2324 | for (i = 0; i < file_data->num_file_names; ++i) | |
2325 | { | |
2326 | xfree ((void*) file_data->file_names[i]); | |
2327 | if (file_data->real_names) | |
2328 | xfree ((void*) file_data->real_names[i]); | |
2329 | } | |
2330 | ||
45940949 TT |
2331 | /* The space for the struct itself lives on the obstack, so we don't |
2332 | free it here. */ | |
7b9f3c50 DE |
2333 | } |
2334 | ||
2335 | /* Create a quick_file_names hash table. */ | |
2336 | ||
5895093f | 2337 | static htab_up |
7b9f3c50 DE |
2338 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2339 | { | |
5895093f TT |
2340 | return htab_up (htab_create_alloc (nr_initial_entries, |
2341 | hash_file_name_entry, eq_file_name_entry, | |
2342 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2343 | } |
9291a0cd | 2344 | |
ab432490 SM |
2345 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2346 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2347 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2348 | |
1b555f17 | 2349 | static dwarf2_cu * |
ab432490 SM |
2350 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2351 | bool skip_partial) | |
918dd910 | 2352 | { |
3019eac3 | 2353 | if (per_cu->is_debug_types) |
ab432490 | 2354 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2355 | else |
ab432490 | 2356 | load_full_comp_unit (per_cu, per_objfile, skip_partial, language_minimal); |
918dd910 | 2357 | |
7188ed02 SM |
2358 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2359 | if (cu == nullptr) | |
1b555f17 | 2360 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2361 | |
7188ed02 | 2362 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2363 | |
7188ed02 | 2364 | return cu; |
918dd910 JK |
2365 | } |
2366 | ||
97a1449a | 2367 | /* Read in the symbols for PER_CU in the context of DWARF"_PER_OBJFILE. */ |
2fdf6df6 | 2368 | |
9291a0cd | 2369 | static void |
97a1449a | 2370 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2371 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2372 | { |
f4dc4d17 DE |
2373 | /* Skip type_unit_groups, reading the type units they contain |
2374 | is handled elsewhere. */ | |
197400e8 | 2375 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2376 | return; |
2377 | ||
b303c6f6 AB |
2378 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2379 | the queue. After this point we're guaranteed to leave this function | |
2380 | with the dwarf queue empty. */ | |
39856def | 2381 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2382 | |
976ca316 | 2383 | if (!per_objfile->symtab_set_p (per_cu)) |
95554aad | 2384 | { |
976ca316 SM |
2385 | queue_comp_unit (per_cu, per_objfile, language_minimal); |
2386 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
89e63ee4 DE |
2387 | |
2388 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2389 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2390 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2391 | if (!per_cu->is_debug_types | |
1b555f17 SM |
2392 | && cu != NULL |
2393 | && cu->dwo_unit != NULL | |
976ca316 SM |
2394 | && per_objfile->per_bfd->index_table != NULL |
2395 | && per_objfile->per_bfd->index_table->version <= 7 | |
89e63ee4 | 2396 | /* DWP files aren't supported yet. */ |
976ca316 | 2397 | && get_dwp_file (per_objfile) == NULL) |
1b555f17 | 2398 | queue_and_load_all_dwo_tus (cu); |
95554aad | 2399 | } |
9291a0cd | 2400 | |
976ca316 | 2401 | process_queue (per_objfile); |
9291a0cd TT |
2402 | |
2403 | /* Age the cache, releasing compilation units that have not | |
2404 | been used recently. */ | |
976ca316 | 2405 | per_objfile->age_comp_units (); |
9291a0cd TT |
2406 | } |
2407 | ||
97a1449a SM |
2408 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2409 | the per-objfile for which this symtab is instantiated. | |
2410 | ||
2411 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2412 | |
43f3e411 | 2413 | static struct compunit_symtab * |
97a1449a | 2414 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2415 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2416 | bool skip_partial) |
9291a0cd | 2417 | { |
976ca316 | 2418 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2419 | |
976ca316 | 2420 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2421 | { |
976ca316 | 2422 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2423 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2424 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2425 | process_cu_includes (per_objfile); | |
9291a0cd | 2426 | } |
f194fefb | 2427 | |
976ca316 | 2428 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2429 | } |
2430 | ||
ff4c9fec | 2431 | /* See declaration. */ |
f4dc4d17 | 2432 | |
ff4c9fec | 2433 | dwarf2_per_cu_data * |
5989a64e | 2434 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2435 | { |
b76e467d | 2436 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2437 | { |
b76e467d | 2438 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2439 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2440 | return &this->all_type_units[index]->per_cu; |
2441 | } | |
f4dc4d17 | 2442 | |
ff4c9fec SM |
2443 | return this->all_comp_units[index]; |
2444 | } | |
f4dc4d17 | 2445 | |
ff4c9fec | 2446 | /* See declaration. */ |
2fdf6df6 | 2447 | |
ff4c9fec | 2448 | dwarf2_per_cu_data * |
5989a64e | 2449 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2450 | { |
b76e467d | 2451 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2452 | |
ff4c9fec | 2453 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2454 | } |
2455 | ||
ff4c9fec | 2456 | /* See declaration. */ |
f4dc4d17 | 2457 | |
ff4c9fec | 2458 | signatured_type * |
5989a64e | 2459 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2460 | { |
b2bdb8cf | 2461 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2462 | |
ff4c9fec | 2463 | return this->all_type_units[index]; |
1fd400ff TT |
2464 | } |
2465 | ||
d3473f0c TT |
2466 | /* See read.h. */ |
2467 | ||
2468 | dwarf2_per_cu_data * | |
5989a64e | 2469 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2470 | { |
2471 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2472 | result->per_bfd = this; |
d3473f0c TT |
2473 | result->index = m_num_psymtabs++; |
2474 | return result; | |
2475 | } | |
2476 | ||
2477 | /* See read.h. */ | |
2478 | ||
2479 | signatured_type * | |
5989a64e | 2480 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2481 | { |
2482 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2483 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2484 | result->per_cu.index = m_num_psymtabs++; |
2485 | return result; | |
2486 | } | |
2487 | ||
168c9250 | 2488 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2489 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2490 | |
2491 | static dwarf2_per_cu_data * | |
168c9250 SM |
2492 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2493 | struct dwarf2_section_info *section, | |
2494 | int is_dwz, | |
2495 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2496 | { |
168c9250 | 2497 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2498 | the_cu->sect_off = sect_off; |
2499 | the_cu->length = length; | |
4b514bc8 | 2500 | the_cu->section = section; |
168c9250 | 2501 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2502 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2503 | the_cu->is_dwz = is_dwz; |
2504 | return the_cu; | |
2505 | } | |
2506 | ||
2ec9a5e0 TT |
2507 | /* A helper for create_cus_from_index that handles a given list of |
2508 | CUs. */ | |
2fdf6df6 | 2509 | |
74a0d9f6 | 2510 | static void |
168c9250 | 2511 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2512 | const gdb_byte *cu_list, offset_type n_elements, |
2513 | struct dwarf2_section_info *section, | |
b76e467d | 2514 | int is_dwz) |
9291a0cd | 2515 | { |
12359b5e | 2516 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2517 | { |
74a0d9f6 | 2518 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2519 | |
2520 | sect_offset sect_off | |
2521 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2522 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2523 | cu_list += 2 * 8; |
2524 | ||
b76e467d | 2525 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2526 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2527 | length); | |
2528 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2529 | } |
9291a0cd TT |
2530 | } |
2531 | ||
2ec9a5e0 | 2532 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2533 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2534 | |
74a0d9f6 | 2535 | static void |
168c9250 | 2536 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2537 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2538 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2539 | { | |
168c9250 SM |
2540 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2541 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2542 | |
168c9250 SM |
2543 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2544 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2545 | |
2546 | if (dwz_elements == 0) | |
74a0d9f6 | 2547 | return; |
2ec9a5e0 | 2548 | |
168c9250 SM |
2549 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2550 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2551 | &dwz->info, 1); |
2ec9a5e0 TT |
2552 | } |
2553 | ||
1fd400ff | 2554 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2555 | |
74a0d9f6 | 2556 | static void |
12359b5e | 2557 | create_signatured_type_table_from_index |
168c9250 SM |
2558 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2559 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2560 | { |
168c9250 SM |
2561 | gdb_assert (per_bfd->all_type_units.empty ()); |
2562 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2563 | |
298e9637 | 2564 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2565 | |
12359b5e | 2566 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2567 | { |
52dc124a | 2568 | struct signatured_type *sig_type; |
9c541725 | 2569 | ULONGEST signature; |
1fd400ff | 2570 | void **slot; |
9c541725 | 2571 | cu_offset type_offset_in_tu; |
1fd400ff | 2572 | |
74a0d9f6 | 2573 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2574 | sect_offset sect_off |
2575 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2576 | type_offset_in_tu | |
2577 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2578 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2579 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2580 | bytes += 3 * 8; | |
2581 | ||
168c9250 | 2582 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2583 | sig_type->signature = signature; |
9c541725 | 2584 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2585 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2586 | sig_type->per_cu.section = section; |
9c541725 | 2587 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2588 | sig_type->per_cu.v.quick |
168c9250 | 2589 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2590 | struct dwarf2_per_cu_quick_data); |
2591 | ||
b0b6a987 | 2592 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2593 | *slot = sig_type; |
1fd400ff | 2594 | |
168c9250 | 2595 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2596 | } |
2597 | ||
168c9250 | 2598 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2599 | } |
2600 | ||
927aa2e7 JK |
2601 | /* Create the signatured type hash table from .debug_names. */ |
2602 | ||
2603 | static void | |
2604 | create_signatured_type_table_from_debug_names | |
976ca316 | 2605 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2606 | const mapped_debug_names &map, |
2607 | struct dwarf2_section_info *section, | |
2608 | struct dwarf2_section_info *abbrev_section) | |
2609 | { | |
976ca316 | 2610 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2611 | |
96b79293 TT |
2612 | section->read (objfile); |
2613 | abbrev_section->read (objfile); | |
927aa2e7 | 2614 | |
976ca316 SM |
2615 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
2616 | per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2617 | |
298e9637 | 2618 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2619 | |
2620 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2621 | { | |
2622 | struct signatured_type *sig_type; | |
927aa2e7 | 2623 | void **slot; |
927aa2e7 JK |
2624 | |
2625 | sect_offset sect_off | |
2626 | = (sect_offset) (extract_unsigned_integer | |
2627 | (map.tu_table_reordered + i * map.offset_size, | |
2628 | map.offset_size, | |
2629 | map.dwarf5_byte_order)); | |
2630 | ||
2631 | comp_unit_head cu_header; | |
976ca316 | 2632 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2633 | abbrev_section, |
927aa2e7 JK |
2634 | section->buffer + to_underlying (sect_off), |
2635 | rcuh_kind::TYPE); | |
2636 | ||
976ca316 | 2637 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2638 | sig_type->signature = cu_header.signature; |
2639 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2640 | sig_type->per_cu.is_debug_types = 1; | |
2641 | sig_type->per_cu.section = section; | |
2642 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2643 | sig_type->per_cu.v.quick |
976ca316 | 2644 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2645 | struct dwarf2_per_cu_quick_data); |
2646 | ||
b0b6a987 | 2647 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2648 | *slot = sig_type; |
2649 | ||
976ca316 | 2650 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2651 | } |
2652 | ||
976ca316 | 2653 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2654 | } |
2655 | ||
9291a0cd TT |
2656 | /* Read the address map data from the mapped index, and use it to |
2657 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2658 | |
9291a0cd | 2659 | static void |
976ca316 | 2660 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2661 | struct mapped_index *index) |
9291a0cd | 2662 | { |
976ca316 | 2663 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 2664 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2665 | const gdb_byte *iter, *end; |
9291a0cd | 2666 | struct addrmap *mutable_map; |
9291a0cd TT |
2667 | CORE_ADDR baseaddr; |
2668 | ||
8268c778 PA |
2669 | auto_obstack temp_obstack; |
2670 | ||
9291a0cd TT |
2671 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2672 | ||
f00a2de2 PA |
2673 | iter = index->address_table.data (); |
2674 | end = iter + index->address_table.size (); | |
9291a0cd | 2675 | |
b3b3bada | 2676 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2677 | |
2678 | while (iter < end) | |
2679 | { | |
2680 | ULONGEST hi, lo, cu_index; | |
2681 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2682 | iter += 8; | |
2683 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2684 | iter += 8; | |
2685 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2686 | iter += 4; | |
f652bce2 | 2687 | |
24a55014 | 2688 | if (lo > hi) |
f652bce2 | 2689 | { |
b98664d3 | 2690 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2691 | hex_string (lo), hex_string (hi)); |
24a55014 | 2692 | continue; |
f652bce2 | 2693 | } |
24a55014 | 2694 | |
976ca316 | 2695 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2696 | { |
b98664d3 | 2697 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2698 | (unsigned) cu_index); |
24a55014 | 2699 | continue; |
f652bce2 | 2700 | } |
24a55014 | 2701 | |
79748972 TT |
2702 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2703 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2704 | addrmap_set_empty (mutable_map, lo, hi - 1, |
976ca316 | 2705 | per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2706 | } |
2707 | ||
d320c2b5 | 2708 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2709 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2710 | } |
2711 | ||
927aa2e7 JK |
2712 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2713 | populate the objfile's psymtabs_addrmap. */ | |
2714 | ||
2715 | static void | |
976ca316 | 2716 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2717 | struct dwarf2_section_info *section) |
2718 | { | |
976ca316 | 2719 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2720 | bfd *abfd = objfile->obfd; |
08feed99 | 2721 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2722 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2723 | |
2724 | auto_obstack temp_obstack; | |
2725 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2726 | ||
2727 | std::unordered_map<sect_offset, | |
2728 | dwarf2_per_cu_data *, | |
2729 | gdb::hash_enum<sect_offset>> | |
2730 | debug_info_offset_to_per_cu; | |
976ca316 | 2731 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2732 | { |
927aa2e7 JK |
2733 | const auto insertpair |
2734 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2735 | if (!insertpair.second) | |
2736 | { | |
2737 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2738 | "debug_info_offset %s, ignoring .debug_aranges."), |
2739 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2740 | return; |
2741 | } | |
2742 | } | |
2743 | ||
96b79293 | 2744 | section->read (objfile); |
927aa2e7 JK |
2745 | |
2746 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2747 | ||
2748 | const gdb_byte *addr = section->buffer; | |
2749 | ||
2750 | while (addr < section->buffer + section->size) | |
2751 | { | |
2752 | const gdb_byte *const entry_addr = addr; | |
2753 | unsigned int bytes_read; | |
2754 | ||
2755 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2756 | &bytes_read); | |
2757 | addr += bytes_read; | |
2758 | ||
2759 | const gdb_byte *const entry_end = addr + entry_length; | |
2760 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2761 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2762 | if (addr + entry_length > section->buffer + section->size) | |
2763 | { | |
47e3f474 | 2764 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2765 | "length %s exceeds section length %s, " |
2766 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2767 | objfile_name (objfile), |
2768 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2769 | plongest (bytes_read + entry_length), |
2770 | pulongest (section->size)); | |
2771 | return; | |
2772 | } | |
2773 | ||
2774 | /* The version number. */ | |
2775 | const uint16_t version = read_2_bytes (abfd, addr); | |
2776 | addr += 2; | |
2777 | if (version != 2) | |
2778 | { | |
47e3f474 | 2779 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2780 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2781 | objfile_name (objfile), |
2782 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2783 | return; |
2784 | } | |
2785 | ||
2786 | const uint64_t debug_info_offset | |
2787 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2788 | addr += offset_size; | |
2789 | const auto per_cu_it | |
2790 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2791 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2792 | { | |
47e3f474 | 2793 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2794 | "debug_info_offset %s does not exists, " |
2795 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2796 | objfile_name (objfile), |
2797 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2798 | pulongest (debug_info_offset)); |
2799 | return; | |
2800 | } | |
2801 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2802 | ||
2803 | const uint8_t address_size = *addr++; | |
2804 | if (address_size < 1 || address_size > 8) | |
2805 | { | |
47e3f474 | 2806 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2807 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2808 | objfile_name (objfile), |
2809 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2810 | return; |
2811 | } | |
2812 | ||
2813 | const uint8_t segment_selector_size = *addr++; | |
2814 | if (segment_selector_size != 0) | |
2815 | { | |
47e3f474 | 2816 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2817 | "segment_selector_size %u is not supported, " |
2818 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2819 | objfile_name (objfile), |
2820 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2821 | segment_selector_size); |
2822 | return; | |
2823 | } | |
2824 | ||
2825 | /* Must pad to an alignment boundary that is twice the address | |
2826 | size. It is undocumented by the DWARF standard but GCC does | |
2827 | use it. */ | |
2828 | for (size_t padding = ((-(addr - section->buffer)) | |
2829 | & (2 * address_size - 1)); | |
2830 | padding > 0; padding--) | |
2831 | if (*addr++ != 0) | |
2832 | { | |
47e3f474 | 2833 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2834 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2835 | objfile_name (objfile), |
2836 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2837 | return; |
2838 | } | |
2839 | ||
2840 | for (;;) | |
2841 | { | |
2842 | if (addr + 2 * address_size > entry_end) | |
2843 | { | |
47e3f474 | 2844 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2845 | "address list is not properly terminated, " |
2846 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2847 | objfile_name (objfile), |
2848 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2849 | return; |
2850 | } | |
2851 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2852 | dwarf5_byte_order); | |
2853 | addr += address_size; | |
2854 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2855 | dwarf5_byte_order); | |
2856 | addr += address_size; | |
2857 | if (start == 0 && length == 0) | |
2858 | break; | |
976ca316 | 2859 | if (start == 0 && !per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
2860 | { |
2861 | /* Symbol was eliminated due to a COMDAT group. */ | |
2862 | continue; | |
2863 | } | |
2864 | ULONGEST end = start + length; | |
79748972 TT |
2865 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2866 | - baseaddr); | |
2867 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2868 | - baseaddr); | |
927aa2e7 JK |
2869 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2870 | } | |
2871 | } | |
2872 | ||
d320c2b5 | 2873 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2874 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2875 | } |
2876 | ||
9291a0cd TT |
2877 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2878 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2879 | constant pool and return true. If NAME cannot be found, return |
2880 | false. */ | |
2fdf6df6 | 2881 | |
109483d9 | 2882 | static bool |
9291a0cd TT |
2883 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2884 | offset_type **vec_out) | |
2885 | { | |
0cf03b49 | 2886 | offset_type hash; |
9291a0cd | 2887 | offset_type slot, step; |
559a7a62 | 2888 | int (*cmp) (const char *, const char *); |
9291a0cd | 2889 | |
791afaa2 | 2890 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2891 | if (current_language->la_language == language_cplus |
45280282 IB |
2892 | || current_language->la_language == language_fortran |
2893 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2894 | { |
2895 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2896 | not contain any. */ | |
a8719064 | 2897 | |
72998fb3 | 2898 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2899 | { |
109483d9 | 2900 | without_params = cp_remove_params (name); |
0cf03b49 | 2901 | |
72998fb3 | 2902 | if (without_params != NULL) |
791afaa2 | 2903 | name = without_params.get (); |
0cf03b49 JK |
2904 | } |
2905 | } | |
2906 | ||
559a7a62 | 2907 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2908 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2909 | simulate our NAME being searched is also lowercased. */ |
2910 | hash = mapped_index_string_hash ((index->version == 4 | |
2911 | && case_sensitivity == case_sensitive_off | |
2912 | ? 5 : index->version), | |
2913 | name); | |
2914 | ||
f00a2de2 PA |
2915 | slot = hash & (index->symbol_table.size () - 1); |
2916 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2917 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2918 | |
2919 | for (;;) | |
2920 | { | |
9291a0cd | 2921 | const char *str; |
f00a2de2 PA |
2922 | |
2923 | const auto &bucket = index->symbol_table[slot]; | |
2924 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2925 | return false; |
9291a0cd | 2926 | |
f00a2de2 | 2927 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2928 | if (!cmp (name, str)) |
9291a0cd TT |
2929 | { |
2930 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2931 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2932 | return true; |
9291a0cd TT |
2933 | } |
2934 | ||
f00a2de2 | 2935 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2936 | } |
2937 | } | |
2938 | ||
4485a1c1 SM |
2939 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2940 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2941 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2942 | ok to use deprecated sections. |
2943 | ||
2944 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2945 | out parameters that are filled in with information about the CU and | |
2946 | TU lists in the section. | |
2947 | ||
4485a1c1 | 2948 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2949 | |
d33bc52e | 2950 | static bool |
3810f182 | 2951 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2952 | bool deprecated_ok, |
2953 | gdb::array_view<const gdb_byte> buffer, | |
2954 | struct mapped_index *map, | |
2955 | const gdb_byte **cu_list, | |
2956 | offset_type *cu_list_elements, | |
2957 | const gdb_byte **types_list, | |
2958 | offset_type *types_list_elements) | |
2959 | { | |
2960 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 2961 | |
9291a0cd | 2962 | /* Version check. */ |
4485a1c1 | 2963 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2964 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2965 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2966 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2967 | indices. */ |
831adc1f | 2968 | if (version < 4) |
481860b3 GB |
2969 | { |
2970 | static int warning_printed = 0; | |
2971 | if (!warning_printed) | |
2972 | { | |
2973 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2974 | filename); |
481860b3 GB |
2975 | warning_printed = 1; |
2976 | } | |
2977 | return 0; | |
2978 | } | |
2979 | /* Index version 4 uses a different hash function than index version | |
2980 | 5 and later. | |
2981 | ||
2982 | Versions earlier than 6 did not emit psymbols for inlined | |
2983 | functions. Using these files will cause GDB not to be able to | |
2984 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2985 | indices unless the user has done |
2986 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2987 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2988 | { |
2989 | static int warning_printed = 0; | |
2990 | if (!warning_printed) | |
2991 | { | |
e615022a DE |
2992 | warning (_("\ |
2993 | Skipping deprecated .gdb_index section in %s.\n\ | |
2994 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2995 | to use the section anyway."), | |
2ec9a5e0 | 2996 | filename); |
481860b3 GB |
2997 | warning_printed = 1; |
2998 | } | |
2999 | return 0; | |
3000 | } | |
796a7ff8 | 3001 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3002 | of the TU (for symbols coming from TUs), |
3003 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3004 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3005 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3006 | These are just performance bugs, and we can't distinguish gdb-generated | |
3007 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3008 | |
481860b3 | 3009 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3010 | longer backward compatible. */ |
796a7ff8 | 3011 | if (version > 8) |
594e8718 | 3012 | return 0; |
9291a0cd | 3013 | |
559a7a62 | 3014 | map->version = version; |
9291a0cd | 3015 | |
4485a1c1 | 3016 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3017 | |
4485a1c1 | 3018 | int i = 0; |
2ec9a5e0 TT |
3019 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3020 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3021 | / 8); | |
1fd400ff TT |
3022 | ++i; |
3023 | ||
2ec9a5e0 TT |
3024 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3025 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3026 | - MAYBE_SWAP (metadata[i])) | |
3027 | / 8); | |
987d643c | 3028 | ++i; |
1fd400ff | 3029 | |
f00a2de2 PA |
3030 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3031 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3032 | map->address_table | |
3033 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3034 | ++i; |
3035 | ||
f00a2de2 PA |
3036 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3037 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3038 | map->symbol_table | |
3039 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3040 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3041 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3042 | |
f00a2de2 | 3043 | ++i; |
f9d83a0b | 3044 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3045 | |
2ec9a5e0 TT |
3046 | return 1; |
3047 | } | |
3048 | ||
4485a1c1 SM |
3049 | /* Callback types for dwarf2_read_gdb_index. */ |
3050 | ||
3051 | typedef gdb::function_view | |
5989a64e | 3052 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3053 | get_gdb_index_contents_ftype; |
3054 | typedef gdb::function_view | |
3055 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3056 | get_gdb_index_contents_dwz_ftype; | |
3057 | ||
927aa2e7 | 3058 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3059 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3060 | ||
3061 | static int | |
4485a1c1 | 3062 | dwarf2_read_gdb_index |
976ca316 | 3063 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3064 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3065 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3066 | { |
2ec9a5e0 TT |
3067 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3068 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3069 | struct dwz_file *dwz; |
976ca316 | 3070 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3071 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3072 | |
4485a1c1 | 3073 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3074 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3075 | |
3076 | if (main_index_contents.empty ()) | |
3077 | return 0; | |
3078 | ||
3063847f | 3079 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3080 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3081 | use_deprecated_index_sections, |
3082 | main_index_contents, map.get (), &cu_list, | |
3083 | &cu_list_elements, &types_list, | |
3084 | &types_list_elements)) | |
2ec9a5e0 TT |
3085 | return 0; |
3086 | ||
0fefef59 | 3087 | /* Don't use the index if it's empty. */ |
3063847f | 3088 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3089 | return 0; |
3090 | ||
2ec9a5e0 TT |
3091 | /* If there is a .dwz file, read it so we can get its CU list as |
3092 | well. */ | |
f8c41851 | 3093 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3094 | if (dwz != NULL) |
2ec9a5e0 | 3095 | { |
2ec9a5e0 TT |
3096 | struct mapped_index dwz_map; |
3097 | const gdb_byte *dwz_types_ignore; | |
3098 | offset_type dwz_types_elements_ignore; | |
3099 | ||
4485a1c1 SM |
3100 | gdb::array_view<const gdb_byte> dwz_index_content |
3101 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3102 | ||
3103 | if (dwz_index_content.empty ()) | |
3104 | return 0; | |
3105 | ||
3810f182 | 3106 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3107 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3108 | &dwz_list, &dwz_list_elements, |
3109 | &dwz_types_ignore, | |
3110 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3111 | { |
3112 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3113 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3114 | return 0; |
3115 | } | |
3116 | } | |
3117 | ||
f8c41851 SM |
3118 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3119 | dwz_list_elements); | |
1fd400ff | 3120 | |
8b70b953 TT |
3121 | if (types_list_elements) |
3122 | { | |
8b70b953 TT |
3123 | /* We can only handle a single .debug_types when we have an |
3124 | index. */ | |
f8c41851 | 3125 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3126 | return 0; |
3127 | ||
f8c41851 | 3128 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3129 | |
f8c41851 | 3130 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3131 | types_list_elements); |
8b70b953 | 3132 | } |
9291a0cd | 3133 | |
976ca316 | 3134 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3135 | |
f8c41851 SM |
3136 | per_bfd->index_table = std::move (map); |
3137 | per_bfd->using_index = 1; | |
3138 | per_bfd->quick_file_names_table = | |
3139 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3140 | ||
3141 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent | |
3142 | objfiles using the same BFD. */ | |
3143 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
3144 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
9291a0cd TT |
3145 | |
3146 | return 1; | |
3147 | } | |
3148 | ||
dee91e82 | 3149 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3150 | |
dee91e82 DE |
3151 | static void |
3152 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3153 | const gdb_byte *info_ptr, |
3e225074 | 3154 | struct die_info *comp_unit_die) |
9291a0cd | 3155 | { |
dee91e82 | 3156 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3157 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3158 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3159 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3160 | struct attribute *attr; |
7b9f3c50 DE |
3161 | void **slot; |
3162 | struct quick_file_names *qfn; | |
9291a0cd | 3163 | |
0186c6a7 DE |
3164 | gdb_assert (! this_cu->is_debug_types); |
3165 | ||
07261596 TT |
3166 | /* Our callers never want to match partial units -- instead they |
3167 | will match the enclosing full CU. */ | |
3168 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3169 | { | |
3170 | this_cu->v.quick->no_file_data = 1; | |
3171 | return; | |
3172 | } | |
3173 | ||
0186c6a7 | 3174 | lh_cu = this_cu; |
7b9f3c50 | 3175 | slot = NULL; |
dee91e82 | 3176 | |
fff8551c | 3177 | line_header_up lh; |
9c541725 | 3178 | sect_offset line_offset {}; |
fff8551c | 3179 | |
dee91e82 | 3180 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3181 | if (attr != nullptr) |
9291a0cd | 3182 | { |
7b9f3c50 DE |
3183 | struct quick_file_names find_entry; |
3184 | ||
9c541725 | 3185 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3186 | |
3187 | /* We may have already read in this line header (TU line header sharing). | |
3188 | If we have we're done. */ | |
094b34ac | 3189 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3190 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3191 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3192 | &find_entry, INSERT); |
3193 | if (*slot != NULL) | |
3194 | { | |
9a3c8263 | 3195 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3196 | return; |
7b9f3c50 DE |
3197 | } |
3198 | ||
3019eac3 | 3199 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3200 | } |
3201 | if (lh == NULL) | |
3202 | { | |
094b34ac | 3203 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3204 | return; |
9291a0cd TT |
3205 | } |
3206 | ||
976ca316 | 3207 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3208 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3209 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3210 | gdb_assert (slot != NULL); |
3211 | *slot = qfn; | |
9291a0cd | 3212 | |
d721ba37 | 3213 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3214 | |
aa391654 TT |
3215 | int offset = 0; |
3216 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3217 | ++offset; | |
3218 | ||
7ba99d21 | 3219 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3220 | qfn->file_names = |
976ca316 | 3221 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3222 | qfn->num_file_names); |
aa391654 TT |
3223 | if (offset != 0) |
3224 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3225 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3226 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3227 | fnd.comp_dir).release (); | |
7b9f3c50 | 3228 | qfn->real_names = NULL; |
9291a0cd | 3229 | |
094b34ac | 3230 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3231 | } |
3232 | ||
3233 | /* A helper for the "quick" functions which attempts to read the line | |
3234 | table for THIS_CU. */ | |
3235 | ||
3236 | static struct quick_file_names * | |
ab432490 SM |
3237 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3238 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3239 | { |
0186c6a7 DE |
3240 | /* This should never be called for TUs. */ |
3241 | gdb_assert (! this_cu->is_debug_types); | |
3242 | /* Nor type unit groups. */ | |
197400e8 | 3243 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3244 | |
dee91e82 DE |
3245 | if (this_cu->v.quick->file_names != NULL) |
3246 | return this_cu->v.quick->file_names; | |
3247 | /* If we know there is no line data, no point in looking again. */ | |
3248 | if (this_cu->v.quick->no_file_data) | |
3249 | return NULL; | |
3250 | ||
ab432490 | 3251 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3252 | if (!reader.dummy_p) |
3e225074 | 3253 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3254 | |
3255 | if (this_cu->v.quick->no_file_data) | |
3256 | return NULL; | |
3257 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3258 | } |
3259 | ||
3260 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3261 | real path for a given file name from the line table. */ |
2fdf6df6 | 3262 | |
9291a0cd | 3263 | static const char * |
976ca316 | 3264 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3265 | struct quick_file_names *qfn, int index) |
9291a0cd | 3266 | { |
7b9f3c50 | 3267 | if (qfn->real_names == NULL) |
976ca316 | 3268 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3269 | qfn->num_file_names, const char *); |
9291a0cd | 3270 | |
7b9f3c50 | 3271 | if (qfn->real_names[index] == NULL) |
14278e1f | 3272 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3273 | |
7b9f3c50 | 3274 | return qfn->real_names[index]; |
9291a0cd TT |
3275 | } |
3276 | ||
3277 | static struct symtab * | |
3278 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3279 | { | |
976ca316 SM |
3280 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3281 | dwarf2_per_cu_data *dwarf_cu = per_objfile->per_bfd->all_comp_units.back (); | |
3282 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); | |
ae2de4f8 | 3283 | |
43f3e411 DE |
3284 | if (cust == NULL) |
3285 | return NULL; | |
ed2dc618 | 3286 | |
43f3e411 | 3287 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3288 | } |
3289 | ||
7b9f3c50 DE |
3290 | /* Traversal function for dw2_forget_cached_source_info. */ |
3291 | ||
3292 | static int | |
3293 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3294 | { |
7b9f3c50 | 3295 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3296 | |
7b9f3c50 | 3297 | if (file_data->real_names) |
9291a0cd | 3298 | { |
7b9f3c50 | 3299 | int i; |
9291a0cd | 3300 | |
7b9f3c50 | 3301 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3302 | { |
7b9f3c50 DE |
3303 | xfree ((void*) file_data->real_names[i]); |
3304 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3305 | } |
3306 | } | |
7b9f3c50 DE |
3307 | |
3308 | return 1; | |
3309 | } | |
3310 | ||
3311 | static void | |
3312 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3313 | { | |
976ca316 | 3314 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3315 | |
976ca316 | 3316 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3317 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3318 | } |
3319 | ||
f8eba3c6 TT |
3320 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3321 | the symtabs and calls the iterator. */ | |
3322 | ||
3323 | static int | |
3324 | dw2_map_expand_apply (struct objfile *objfile, | |
3325 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3326 | const char *name, const char *real_path, |
14bc53a8 | 3327 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3328 | { |
43f3e411 | 3329 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3330 | |
3331 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3332 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3333 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3334 | return 0; |
3335 | ||
3336 | /* This may expand more than one symtab, and we want to iterate over | |
3337 | all of them. */ | |
97a1449a | 3338 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3339 | |
14bc53a8 PA |
3340 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3341 | last_made, callback); | |
f8eba3c6 TT |
3342 | } |
3343 | ||
3344 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3345 | ||
14bc53a8 PA |
3346 | static bool |
3347 | dw2_map_symtabs_matching_filename | |
3348 | (struct objfile *objfile, const char *name, const char *real_path, | |
3349 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3350 | { |
c011a4f4 | 3351 | const char *name_basename = lbasename (name); |
976ca316 | 3352 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 3353 | |
848e3e78 DE |
3354 | /* The rule is CUs specify all the files, including those used by |
3355 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3356 | |
976ca316 | 3357 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3358 | { |
3d7bb9d9 | 3359 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3360 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3361 | continue; |
3362 | ||
976ca316 | 3363 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3364 | if (file_data == NULL) |
9291a0cd TT |
3365 | continue; |
3366 | ||
b76e467d | 3367 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3368 | { |
7b9f3c50 | 3369 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3370 | const char *this_real_name; |
9291a0cd | 3371 | |
af529f8f | 3372 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3373 | { |
f5b95b50 | 3374 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3375 | callback)) |
3376 | return true; | |
288e77a7 | 3377 | continue; |
4aac40c8 | 3378 | } |
9291a0cd | 3379 | |
c011a4f4 DE |
3380 | /* Before we invoke realpath, which can get expensive when many |
3381 | files are involved, do a quick comparison of the basenames. */ | |
3382 | if (! basenames_may_differ | |
3383 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3384 | continue; | |
3385 | ||
976ca316 | 3386 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
da235a7c | 3387 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3388 | { |
da235a7c | 3389 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3390 | callback)) |
3391 | return true; | |
288e77a7 | 3392 | continue; |
da235a7c | 3393 | } |
9291a0cd | 3394 | |
da235a7c JK |
3395 | if (real_path != NULL) |
3396 | { | |
af529f8f JK |
3397 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3398 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3399 | if (this_real_name != NULL |
af529f8f | 3400 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3401 | { |
f5b95b50 | 3402 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3403 | callback)) |
3404 | return true; | |
288e77a7 | 3405 | continue; |
9291a0cd TT |
3406 | } |
3407 | } | |
3408 | } | |
3409 | } | |
3410 | ||
14bc53a8 | 3411 | return false; |
9291a0cd TT |
3412 | } |
3413 | ||
da51c347 DE |
3414 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3415 | ||
3416 | struct dw2_symtab_iterator | |
9291a0cd | 3417 | { |
ed2dc618 | 3418 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3419 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3420 | /* If set, only look for symbols that match that block. Valid values are |
3421 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3422 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3423 | /* The kind of symbol we're looking for. */ |
3424 | domain_enum domain; | |
3425 | /* The list of CUs from the index entry of the symbol, | |
3426 | or NULL if not found. */ | |
3427 | offset_type *vec; | |
3428 | /* The next element in VEC to look at. */ | |
3429 | int next; | |
3430 | /* The number of elements in VEC, or zero if there is no match. */ | |
3431 | int length; | |
8943b874 DE |
3432 | /* Have we seen a global version of the symbol? |
3433 | If so we can ignore all further global instances. | |
3434 | This is to work around gold/15646, inefficient gold-generated | |
3435 | indices. */ | |
3436 | int global_seen; | |
da51c347 | 3437 | }; |
9291a0cd | 3438 | |
e5f3ece2 | 3439 | /* Initialize the index symtab iterator ITER, common part. */ |
2fdf6df6 | 3440 | |
9291a0cd | 3441 | static void |
e5f3ece2 TV |
3442 | dw2_symtab_iter_init_common (struct dw2_symtab_iterator *iter, |
3443 | dwarf2_per_objfile *per_objfile, | |
3444 | gdb::optional<block_enum> block_index, | |
3445 | domain_enum domain) | |
da51c347 | 3446 | { |
976ca316 | 3447 | iter->per_objfile = per_objfile; |
da51c347 DE |
3448 | iter->block_index = block_index; |
3449 | iter->domain = domain; | |
3450 | iter->next = 0; | |
8943b874 | 3451 | iter->global_seen = 0; |
e5f3ece2 TV |
3452 | iter->vec = NULL; |
3453 | iter->length = 0; | |
3454 | } | |
da51c347 | 3455 | |
e5f3ece2 TV |
3456 | /* Initialize the index symtab iterator ITER, const char *NAME variant. */ |
3457 | ||
3458 | static void | |
3459 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3460 | dwarf2_per_objfile *per_objfile, | |
3461 | gdb::optional<block_enum> block_index, | |
3462 | domain_enum domain, | |
3463 | const char *name) | |
3464 | { | |
3465 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
ed2dc618 | 3466 | |
e5f3ece2 | 3467 | mapped_index *index = per_objfile->per_bfd->index_table.get (); |
ed2dc618 | 3468 | /* index is NULL if OBJF_READNOW. */ |
e5f3ece2 TV |
3469 | if (index == NULL) |
3470 | return; | |
3471 | ||
3472 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 | 3473 | iter->length = MAYBE_SWAP (*iter->vec); |
e5f3ece2 TV |
3474 | } |
3475 | ||
3476 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ | |
3477 | ||
3478 | static void | |
3479 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3480 | dwarf2_per_objfile *per_objfile, | |
3481 | gdb::optional<block_enum> block_index, | |
3482 | domain_enum domain, offset_type namei) | |
3483 | { | |
3484 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
3485 | ||
3486 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3487 | /* index is NULL if OBJF_READNOW. */ | |
3488 | if (index == NULL) | |
3489 | return; | |
3490 | ||
3491 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
3492 | const auto &bucket = index->symbol_table[namei]; | |
3493 | ||
3494 | iter->vec = (offset_type *) (index->constant_pool | |
3495 | + MAYBE_SWAP (bucket.vec)); | |
3496 | iter->length = MAYBE_SWAP (*iter->vec); | |
da51c347 DE |
3497 | } |
3498 | ||
3499 | /* Return the next matching CU or NULL if there are no more. */ | |
3500 | ||
3501 | static struct dwarf2_per_cu_data * | |
3502 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3503 | { | |
976ca316 | 3504 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3505 | |
da51c347 DE |
3506 | for ( ; iter->next < iter->length; ++iter->next) |
3507 | { | |
3508 | offset_type cu_index_and_attrs = | |
3509 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3510 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3511 | gdb_index_symbol_kind symbol_kind = |
3512 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3513 | /* Only check the symbol attributes if they're present. | |
3514 | Indices prior to version 7 don't record them, | |
3515 | and indices >= 7 may elide them for certain symbols | |
3516 | (gold does this). */ | |
3517 | int attrs_valid = | |
976ca316 | 3518 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3519 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3520 | ||
3190f0c6 | 3521 | /* Don't crash on bad data. */ |
976ca316 SM |
3522 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
3523 | + per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3524 | { |
b98664d3 | 3525 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3526 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3527 | continue; |
3528 | } | |
3529 | ||
976ca316 | 3530 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3531 | |
da51c347 | 3532 | /* Skip if already read in. */ |
976ca316 | 3533 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3534 | continue; |
3535 | ||
8943b874 DE |
3536 | /* Check static vs global. */ |
3537 | if (attrs_valid) | |
3538 | { | |
2b79f376 SM |
3539 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3540 | ||
3541 | if (iter->block_index.has_value ()) | |
3542 | { | |
3543 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3544 | ||
3545 | if (is_static != want_static) | |
3546 | continue; | |
3547 | } | |
3548 | ||
8943b874 | 3549 | /* Work around gold/15646. */ |
f030440d TV |
3550 | if (!is_static |
3551 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3552 | { | |
3553 | if (iter->global_seen) | |
3554 | continue; | |
3555 | ||
3556 | iter->global_seen = 1; | |
3557 | } | |
8943b874 | 3558 | } |
da51c347 DE |
3559 | |
3560 | /* Only check the symbol's kind if it has one. */ | |
3561 | if (attrs_valid) | |
3562 | { | |
3563 | switch (iter->domain) | |
3564 | { | |
3565 | case VAR_DOMAIN: | |
3566 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3567 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3568 | /* Some types are also in VAR_DOMAIN. */ | |
3569 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3570 | continue; | |
3571 | break; | |
3572 | case STRUCT_DOMAIN: | |
3573 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3574 | continue; | |
3575 | break; | |
3576 | case LABEL_DOMAIN: | |
3577 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3578 | continue; | |
3579 | break; | |
59c35742 AB |
3580 | case MODULE_DOMAIN: |
3581 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3582 | continue; | |
3583 | break; | |
da51c347 DE |
3584 | default: |
3585 | break; | |
3586 | } | |
3587 | } | |
3588 | ||
3589 | ++iter->next; | |
3590 | return per_cu; | |
3591 | } | |
3592 | ||
3593 | return NULL; | |
3594 | } | |
3595 | ||
43f3e411 | 3596 | static struct compunit_symtab * |
c7f839cb | 3597 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3598 | const char *name, domain_enum domain) |
9291a0cd | 3599 | { |
43f3e411 | 3600 | struct compunit_symtab *stab_best = NULL; |
976ca316 | 3601 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 3602 | |
b5ec771e PA |
3603 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3604 | ||
ed2dc618 SM |
3605 | struct dw2_symtab_iterator iter; |
3606 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3607 | |
976ca316 | 3608 | dw2_symtab_iter_init (&iter, per_objfile, block_index, domain, name); |
9291a0cd | 3609 | |
ed2dc618 SM |
3610 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3611 | { | |
3612 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 3613 | struct compunit_symtab *stab |
976ca316 | 3614 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
ed2dc618 | 3615 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3616 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3617 | |
ed2dc618 SM |
3618 | sym = block_find_symbol (block, name, domain, |
3619 | block_find_non_opaque_type_preferred, | |
3620 | &with_opaque); | |
b2e2f908 | 3621 | |
ed2dc618 SM |
3622 | /* Some caution must be observed with overloaded functions |
3623 | and methods, since the index will not contain any overload | |
3624 | information (but NAME might contain it). */ | |
da51c347 | 3625 | |
ed2dc618 SM |
3626 | if (sym != NULL |
3627 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3628 | return stab; | |
3629 | if (with_opaque != NULL | |
3630 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3631 | stab_best = stab; | |
da51c347 | 3632 | |
ed2dc618 | 3633 | /* Keep looking through other CUs. */ |
9291a0cd | 3634 | } |
9291a0cd | 3635 | |
da51c347 | 3636 | return stab_best; |
9291a0cd TT |
3637 | } |
3638 | ||
3639 | static void | |
3640 | dw2_print_stats (struct objfile *objfile) | |
3641 | { | |
976ca316 SM |
3642 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3643 | int total = (per_objfile->per_bfd->all_comp_units.size () | |
3644 | + per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3645 | int count = 0; |
9291a0cd | 3646 | |
ed2dc618 | 3647 | for (int i = 0; i < total; ++i) |
9291a0cd | 3648 | { |
976ca316 | 3649 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3650 | |
976ca316 | 3651 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3652 | ++count; |
3653 | } | |
e4a48d9d | 3654 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3655 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3656 | } | |
3657 | ||
779bd270 DE |
3658 | /* This dumps minimal information about the index. |
3659 | It is called via "mt print objfiles". | |
3660 | One use is to verify .gdb_index has been loaded by the | |
3661 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3662 | ||
9291a0cd TT |
3663 | static void |
3664 | dw2_dump (struct objfile *objfile) | |
3665 | { | |
976ca316 | 3666 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3667 | |
976ca316 | 3668 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3669 | printf_filtered (".gdb_index:"); |
976ca316 | 3670 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3671 | { |
3672 | printf_filtered (" version %d\n", | |
976ca316 | 3673 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3674 | } |
3675 | else | |
3676 | printf_filtered (" faked for \"readnow\"\n"); | |
3677 | printf_filtered ("\n"); | |
9291a0cd TT |
3678 | } |
3679 | ||
9291a0cd TT |
3680 | static void |
3681 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3682 | const char *func_name) | |
3683 | { | |
976ca316 | 3684 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
da51c347 | 3685 | |
ed2dc618 SM |
3686 | struct dw2_symtab_iterator iter; |
3687 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3688 | |
976ca316 | 3689 | dw2_symtab_iter_init (&iter, per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3690 | |
ed2dc618 | 3691 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3692 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
da51c347 | 3693 | |
9291a0cd TT |
3694 | } |
3695 | ||
3696 | static void | |
3697 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3698 | { | |
976ca316 SM |
3699 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3700 | int total_units = (per_objfile->per_bfd->all_comp_units.size () | |
3701 | + per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3702 | |
ed2dc618 | 3703 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3704 | { |
976ca316 | 3705 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3706 | |
58f0c718 TT |
3707 | /* We don't want to directly expand a partial CU, because if we |
3708 | read it with the wrong language, then assertion failures can | |
3709 | be triggered later on. See PR symtab/23010. So, tell | |
3710 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3711 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3712 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3713 | } |
3714 | } | |
3715 | ||
3716 | static void | |
652a8996 JK |
3717 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3718 | const char *fullname) | |
9291a0cd | 3719 | { |
976ca316 | 3720 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
d4637a04 DE |
3721 | |
3722 | /* We don't need to consider type units here. | |
3723 | This is only called for examining code, e.g. expand_line_sal. | |
3724 | There can be an order of magnitude (or more) more type units | |
3725 | than comp units, and we avoid them if we can. */ | |
3726 | ||
976ca316 | 3727 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3728 | { |
3d7bb9d9 | 3729 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3730 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3731 | continue; |
3732 | ||
976ca316 | 3733 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3734 | if (file_data == NULL) |
9291a0cd TT |
3735 | continue; |
3736 | ||
b76e467d | 3737 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3738 | { |
652a8996 JK |
3739 | const char *this_fullname = file_data->file_names[j]; |
3740 | ||
3741 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3742 | { |
976ca316 | 3743 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
9291a0cd TT |
3744 | break; |
3745 | } | |
3746 | } | |
3747 | } | |
3748 | } | |
3749 | ||
9a0bacfb TV |
3750 | static void |
3751 | dw2_expand_symtabs_matching_symbol | |
3752 | (mapped_index_base &index, | |
3753 | const lookup_name_info &lookup_name_in, | |
3754 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3755 | enum search_domain kind, | |
fcf23d5b SM |
3756 | gdb::function_view<bool (offset_type)> match_callback, |
3757 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb TV |
3758 | |
3759 | static void | |
3760 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3761 | (dwarf2_per_cu_data *per_cu, |
3762 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3763 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3764 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3765 | ||
9291a0cd | 3766 | static void |
199b4314 TT |
3767 | dw2_map_matching_symbols |
3768 | (struct objfile *objfile, | |
b054970d | 3769 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3770 | int global, |
3771 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3772 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3773 | { |
1aa98955 | 3774 | /* Used for Ada. */ |
976ca316 | 3775 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3776 | |
9a0bacfb TV |
3777 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3778 | ||
976ca316 | 3779 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3780 | { |
976ca316 | 3781 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3782 | |
9a0bacfb TV |
3783 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3784 | auto matcher = [&] (const char *symname) | |
3785 | { | |
3786 | if (ordered_compare == nullptr) | |
3787 | return true; | |
3788 | return ordered_compare (symname, match_name) == 0; | |
3789 | }; | |
3790 | ||
3791 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3792 | [&] (offset_type namei) | |
3793 | { | |
3794 | struct dw2_symtab_iterator iter; | |
3795 | struct dwarf2_per_cu_data *per_cu; | |
3796 | ||
976ca316 | 3797 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3798 | namei); |
9a0bacfb | 3799 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3800 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3801 | nullptr); |
9a0bacfb | 3802 | return true; |
976ca316 | 3803 | }, per_objfile); |
9a0bacfb TV |
3804 | } |
3805 | else | |
3806 | { | |
3807 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3808 | proceed assuming all symtabs have been read in. */ | |
3809 | } | |
1aa98955 TV |
3810 | |
3811 | for (compunit_symtab *cust : objfile->compunits ()) | |
3812 | { | |
3813 | const struct block *block; | |
3814 | ||
3815 | if (cust == NULL) | |
3816 | continue; | |
3817 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3818 | if (!iterate_over_symbols_terminated (block, name, | |
3819 | domain, callback)) | |
3820 | return; | |
3821 | } | |
9291a0cd TT |
3822 | } |
3823 | ||
e1ef7d7a PA |
3824 | /* Starting from a search name, return the string that finds the upper |
3825 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3826 | list. Returns the empty string to indicate that the upper bound is | |
3827 | the end of the list. */ | |
3828 | ||
3829 | static std::string | |
3830 | make_sort_after_prefix_name (const char *search_name) | |
3831 | { | |
3832 | /* When looking to complete "func", we find the upper bound of all | |
3833 | symbols that start with "func" by looking for where we'd insert | |
3834 | the closest string that would follow "func" in lexicographical | |
3835 | order. Usually, that's "func"-with-last-character-incremented, | |
3836 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3837 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3838 | Especially mind the 0xff character, which is a valid character in | |
3839 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3840 | rule out compilers allowing it in identifiers. Note that | |
3841 | conveniently, strcmp/strcasecmp are specified to compare | |
3842 | characters interpreted as unsigned char. So what we do is treat | |
3843 | the whole string as a base 256 number composed of a sequence of | |
3844 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3845 | to 0, and carries 1 to the following more-significant position. | |
3846 | If the very first character in SEARCH_NAME ends up incremented | |
3847 | and carries/overflows, then the upper bound is the end of the | |
3848 | list. The string after the empty string is also the empty | |
3849 | string. | |
3850 | ||
3851 | Some examples of this operation: | |
3852 | ||
3853 | SEARCH_NAME => "+1" RESULT | |
3854 | ||
3855 | "abc" => "abd" | |
3856 | "ab\xff" => "ac" | |
3857 | "\xff" "a" "\xff" => "\xff" "b" | |
3858 | "\xff" => "" | |
3859 | "\xff\xff" => "" | |
3860 | "" => "" | |
3861 | ||
3862 | Then, with these symbols for example: | |
3863 | ||
3864 | func | |
3865 | func1 | |
3866 | fund | |
3867 | ||
3868 | completing "func" looks for symbols between "func" and | |
3869 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3870 | which finds "func" and "func1", but not "fund". | |
3871 | ||
3872 | And with: | |
3873 | ||
3874 | funcÿ (Latin1 'ÿ' [0xff]) | |
3875 | funcÿ1 | |
3876 | fund | |
3877 | ||
3878 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3879 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3880 | ||
3881 | And with: | |
3882 | ||
3883 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3884 | ÿÿ1 | |
3885 | ||
3886 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3887 | the end of the list. | |
3888 | */ | |
3889 | std::string after = search_name; | |
3890 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3891 | after.pop_back (); | |
3892 | if (!after.empty ()) | |
3893 | after.back () = (unsigned char) after.back () + 1; | |
3894 | return after; | |
3895 | } | |
3896 | ||
5c58de74 | 3897 | /* See declaration. */ |
61d96d7e | 3898 | |
5c58de74 PA |
3899 | std::pair<std::vector<name_component>::const_iterator, |
3900 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3901 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
3902 | (const lookup_name_info &lookup_name_without_params, language lang, |
3903 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 3904 | { |
5c58de74 PA |
3905 | auto *name_cmp |
3906 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3907 | |
3b00ef10 | 3908 | const char *lang_name |
e0802d59 | 3909 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3910 | |
3f563c84 PA |
3911 | /* Comparison function object for lower_bound that matches against a |
3912 | given symbol name. */ | |
3913 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3914 | const char *name) | |
3915 | { | |
fcf23d5b | 3916 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3917 | const char *elem_name = elem_qualified + elem.name_offset; |
3918 | return name_cmp (elem_name, name) < 0; | |
3919 | }; | |
3920 | ||
3921 | /* Comparison function object for upper_bound that matches against a | |
3922 | given symbol name. */ | |
3923 | auto lookup_compare_upper = [&] (const char *name, | |
3924 | const name_component &elem) | |
3925 | { | |
fcf23d5b | 3926 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3927 | const char *elem_name = elem_qualified + elem.name_offset; |
3928 | return name_cmp (name, elem_name) < 0; | |
3929 | }; | |
3930 | ||
5c58de74 PA |
3931 | auto begin = this->name_components.begin (); |
3932 | auto end = this->name_components.end (); | |
3f563c84 PA |
3933 | |
3934 | /* Find the lower bound. */ | |
3935 | auto lower = [&] () | |
3936 | { | |
3b00ef10 | 3937 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3938 | return begin; |
3939 | else | |
3b00ef10 | 3940 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3941 | } (); |
3942 | ||
3943 | /* Find the upper bound. */ | |
3944 | auto upper = [&] () | |
3945 | { | |
5c58de74 | 3946 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3947 | { |
e1ef7d7a PA |
3948 | /* In completion mode, we want UPPER to point past all |
3949 | symbols names that have the same prefix. I.e., with | |
3950 | these symbols, and completing "func": | |
3951 | ||
3952 | function << lower bound | |
3953 | function1 | |
3954 | other_function << upper bound | |
3955 | ||
3956 | We find the upper bound by looking for the insertion | |
3957 | point of "func"-with-last-character-incremented, | |
3958 | i.e. "fund". */ | |
3b00ef10 | 3959 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3960 | if (after.empty ()) |
3f563c84 | 3961 | return end; |
e6b2f5ef PA |
3962 | return std::lower_bound (lower, end, after.c_str (), |
3963 | lookup_compare_lower); | |
3f563c84 PA |
3964 | } |
3965 | else | |
3b00ef10 | 3966 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3967 | } (); |
3968 | ||
5c58de74 PA |
3969 | return {lower, upper}; |
3970 | } | |
3971 | ||
3972 | /* See declaration. */ | |
3973 | ||
3974 | void | |
fcf23d5b | 3975 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
3976 | { |
3977 | if (!this->name_components.empty ()) | |
3978 | return; | |
3979 | ||
3980 | this->name_components_casing = case_sensitivity; | |
3981 | auto *name_cmp | |
3982 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3983 | ||
3984 | /* The code below only knows how to break apart components of C++ | |
3985 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3986 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3987 | auto count = this->symbol_name_count (); |
3988 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3989 | { |
44ed8f3e | 3990 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3991 | continue; |
3992 | ||
fcf23d5b | 3993 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
3994 | |
3995 | /* Add each name component to the name component table. */ | |
3996 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3997 | |
3998 | if (strstr (name, "::") != nullptr) | |
3999 | { | |
4000 | for (unsigned int current_len = cp_find_first_component (name); | |
4001 | name[current_len] != '\0'; | |
4002 | current_len += cp_find_first_component (name + current_len)) | |
4003 | { | |
4004 | gdb_assert (name[current_len] == ':'); | |
4005 | this->name_components.push_back ({previous_len, idx}); | |
4006 | /* Skip the '::'. */ | |
4007 | current_len += 2; | |
4008 | previous_len = current_len; | |
4009 | } | |
4010 | } | |
4011 | else | |
5c58de74 | 4012 | { |
3b00ef10 TT |
4013 | /* Handle the Ada encoded (aka mangled) form here. */ |
4014 | for (const char *iter = strstr (name, "__"); | |
4015 | iter != nullptr; | |
4016 | iter = strstr (iter, "__")) | |
4017 | { | |
4018 | this->name_components.push_back ({previous_len, idx}); | |
4019 | iter += 2; | |
4020 | previous_len = iter - name; | |
4021 | } | |
5c58de74 | 4022 | } |
3b00ef10 | 4023 | |
5c58de74 PA |
4024 | this->name_components.push_back ({previous_len, idx}); |
4025 | } | |
4026 | ||
4027 | /* Sort name_components elements by name. */ | |
4028 | auto name_comp_compare = [&] (const name_component &left, | |
4029 | const name_component &right) | |
4030 | { | |
fcf23d5b SM |
4031 | const char *left_qualified |
4032 | = this->symbol_name_at (left.idx, per_objfile); | |
4033 | const char *right_qualified | |
4034 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
4035 | |
4036 | const char *left_name = left_qualified + left.name_offset; | |
4037 | const char *right_name = right_qualified + right.name_offset; | |
4038 | ||
4039 | return name_cmp (left_name, right_name) < 0; | |
4040 | }; | |
4041 | ||
4042 | std::sort (this->name_components.begin (), | |
4043 | this->name_components.end (), | |
4044 | name_comp_compare); | |
4045 | } | |
4046 | ||
4047 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4048 | mapped_index_base instead of the containing objfile. This is split |
4049 | to a separate function in order to be able to unit test the | |
4050 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4051 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4052 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4053 | |
4054 | static void | |
4055 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4056 | (mapped_index_base &index, |
5c58de74 PA |
4057 | const lookup_name_info &lookup_name_in, |
4058 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4059 | enum search_domain kind, | |
fcf23d5b SM |
4060 | gdb::function_view<bool (offset_type)> match_callback, |
4061 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4062 | { |
4063 | lookup_name_info lookup_name_without_params | |
4064 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4065 | |
4066 | /* Build the symbol name component sorted vector, if we haven't | |
4067 | yet. */ | |
fcf23d5b | 4068 | index.build_name_components (per_objfile); |
5c58de74 | 4069 | |
3f563c84 PA |
4070 | /* The same symbol may appear more than once in the range though. |
4071 | E.g., if we're looking for symbols that complete "w", and we have | |
4072 | a symbol named "w1::w2", we'll find the two name components for | |
4073 | that same symbol in the range. To be sure we only call the | |
4074 | callback once per symbol, we first collect the symbol name | |
4075 | indexes that matched in a temporary vector and ignore | |
4076 | duplicates. */ | |
4077 | std::vector<offset_type> matches; | |
3f563c84 | 4078 | |
3b00ef10 TT |
4079 | struct name_and_matcher |
4080 | { | |
4081 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4082 | const char *name; |
3b00ef10 TT |
4083 | |
4084 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4085 | { |
ecc6c606 | 4086 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4087 | } |
4088 | }; | |
4089 | ||
4090 | /* A vector holding all the different symbol name matchers, for all | |
4091 | languages. */ | |
4092 | std::vector<name_and_matcher> matchers; | |
4093 | ||
4094 | for (int i = 0; i < nr_languages; i++) | |
4095 | { | |
4096 | enum language lang_e = (enum language) i; | |
4097 | ||
4098 | const language_defn *lang = language_def (lang_e); | |
4099 | symbol_name_matcher_ftype *name_matcher | |
4100 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 4101 | |
3b00ef10 TT |
4102 | name_and_matcher key { |
4103 | name_matcher, | |
4104 | lookup_name_without_params.language_lookup_name (lang_e) | |
4105 | }; | |
4106 | ||
4107 | /* Don't insert the same comparison routine more than once. | |
4108 | Note that we do this linear walk. This is not a problem in | |
4109 | practice because the number of supported languages is | |
4110 | low. */ | |
4111 | if (std::find (matchers.begin (), matchers.end (), key) | |
4112 | != matchers.end ()) | |
9291a0cd | 4113 | continue; |
3b00ef10 TT |
4114 | matchers.push_back (std::move (key)); |
4115 | ||
4116 | auto bounds | |
4117 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 4118 | lang_e, per_objfile); |
3b00ef10 TT |
4119 | |
4120 | /* Now for each symbol name in range, check to see if we have a name | |
4121 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4122 | ||
4123 | for (; bounds.first != bounds.second; ++bounds.first) | |
4124 | { | |
fcf23d5b SM |
4125 | const char *qualified |
4126 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
4127 | |
4128 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4129 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4130 | continue; | |
9291a0cd | 4131 | |
3b00ef10 TT |
4132 | matches.push_back (bounds.first->idx); |
4133 | } | |
3f563c84 PA |
4134 | } |
4135 | ||
4136 | std::sort (matches.begin (), matches.end ()); | |
4137 | ||
4138 | /* Finally call the callback, once per match. */ | |
4139 | ULONGEST prev = -1; | |
4140 | for (offset_type idx : matches) | |
4141 | { | |
4142 | if (prev != idx) | |
4143 | { | |
3b00ef10 TT |
4144 | if (!match_callback (idx)) |
4145 | break; | |
3f563c84 PA |
4146 | prev = idx; |
4147 | } | |
4148 | } | |
4149 | ||
4150 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4151 | (offset_type)-1 are both possible values. */ | |
4152 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4153 | } | |
4154 | ||
c62446b1 PA |
4155 | #if GDB_SELF_TEST |
4156 | ||
4157 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4158 | ||
a3c5fafd PA |
4159 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4160 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4161 | mapped_index_base interface. Builds an index from the symbol list | |
4162 | passed as parameter to the constructor. */ | |
4163 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4164 | { |
4165 | public: | |
a3c5fafd PA |
4166 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4167 | : m_symbol_table (symbols) | |
c62446b1 PA |
4168 | {} |
4169 | ||
a3c5fafd | 4170 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4171 | |
a3c5fafd | 4172 | /* Return the number of names in the symbol table. */ |
632e107b | 4173 | size_t symbol_name_count () const override |
c62446b1 | 4174 | { |
a3c5fafd | 4175 | return m_symbol_table.size (); |
c62446b1 PA |
4176 | } |
4177 | ||
a3c5fafd | 4178 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
4179 | const char *symbol_name_at |
4180 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
4181 | { |
4182 | return m_symbol_table[idx]; | |
4183 | } | |
c62446b1 | 4184 | |
a3c5fafd PA |
4185 | private: |
4186 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4187 | }; |
4188 | ||
4189 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4190 | string, to pass to print routines. */ | |
4191 | ||
4192 | static const char * | |
4193 | string_or_null (const char *str) | |
4194 | { | |
4195 | return str != NULL ? str : "<null>"; | |
4196 | } | |
4197 | ||
4198 | /* Check if a lookup_name_info built from | |
4199 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4200 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4201 | matching order. If no match expected, then an empty list is | |
4202 | specified. Returns true on success. On failure prints a warning | |
4203 | indicating the file:line that failed, and returns false. */ | |
4204 | ||
4205 | static bool | |
4206 | check_match (const char *file, int line, | |
4207 | mock_mapped_index &mock_index, | |
4208 | const char *name, symbol_name_match_type match_type, | |
4209 | bool completion_mode, | |
fcf23d5b SM |
4210 | std::initializer_list<const char *> expected_list, |
4211 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4212 | { |
4213 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4214 | ||
4215 | bool matched = true; | |
4216 | ||
4217 | auto mismatch = [&] (const char *expected_str, | |
4218 | const char *got) | |
4219 | { | |
4220 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4221 | "expected=\"%s\", got=\"%s\"\n"), | |
4222 | file, line, | |
4223 | (match_type == symbol_name_match_type::FULL | |
4224 | ? "FULL" : "WILD"), | |
4225 | name, string_or_null (expected_str), string_or_null (got)); | |
4226 | matched = false; | |
4227 | }; | |
4228 | ||
4229 | auto expected_it = expected_list.begin (); | |
4230 | auto expected_end = expected_list.end (); | |
4231 | ||
a3c5fafd | 4232 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4233 | NULL, ALL_DOMAIN, |
4234 | [&] (offset_type idx) | |
4235 | { | |
fcf23d5b | 4236 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4237 | const char *expected_str |
4238 | = expected_it == expected_end ? NULL : *expected_it++; | |
4239 | ||
4240 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4241 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4242 | return true; |
fcf23d5b | 4243 | }, per_objfile); |
c62446b1 PA |
4244 | |
4245 | const char *expected_str | |
4246 | = expected_it == expected_end ? NULL : *expected_it++; | |
4247 | if (expected_str != NULL) | |
4248 | mismatch (expected_str, NULL); | |
4249 | ||
4250 | return matched; | |
4251 | } | |
4252 | ||
4253 | /* The symbols added to the mock mapped_index for testing (in | |
4254 | canonical form). */ | |
4255 | static const char *test_symbols[] = { | |
4256 | "function", | |
4257 | "std::bar", | |
4258 | "std::zfunction", | |
4259 | "std::zfunction2", | |
4260 | "w1::w2", | |
4261 | "ns::foo<char*>", | |
4262 | "ns::foo<int>", | |
4263 | "ns::foo<long>", | |
a20714ff PA |
4264 | "ns2::tmpl<int>::foo2", |
4265 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4266 | |
e1ef7d7a PA |
4267 | /* These are used to check that the increment-last-char in the |
4268 | matching algorithm for completion doesn't match "t1_fund" when | |
4269 | completing "t1_func". */ | |
4270 | "t1_func", | |
4271 | "t1_func1", | |
4272 | "t1_fund", | |
4273 | "t1_fund1", | |
4274 | ||
4275 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4276 | cp-name-parser understands this as a single identifier ("função" | |
4277 | is "function" in PT). */ | |
4278 | u8"u8função", | |
4279 | ||
4280 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4281 | "yfunc\377", | |
4282 | ||
4283 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4284 | "\377", | |
4285 | "\377\377123", | |
4286 | ||
c62446b1 PA |
4287 | /* A name with all sorts of complications. Starts with "z" to make |
4288 | it easier for the completion tests below. */ | |
4289 | #define Z_SYM_NAME \ | |
4290 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4291 | "::tuple<(anonymous namespace)::ui*, " \ | |
4292 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4293 | ||
4294 | Z_SYM_NAME | |
4295 | }; | |
4296 | ||
a3c5fafd PA |
4297 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4298 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4299 | in completion mode. */ | |
5c58de74 PA |
4300 | |
4301 | static bool | |
a3c5fafd | 4302 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4303 | const char *search_name, |
fcf23d5b SM |
4304 | gdb::array_view<const char *> expected_syms, |
4305 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4306 | { |
4307 | lookup_name_info lookup_name (search_name, | |
4308 | symbol_name_match_type::FULL, true); | |
4309 | ||
3b00ef10 | 4310 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4311 | language_cplus, |
4312 | per_objfile); | |
5c58de74 PA |
4313 | |
4314 | size_t distance = std::distance (bounds.first, bounds.second); | |
4315 | if (distance != expected_syms.size ()) | |
4316 | return false; | |
4317 | ||
4318 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4319 | { | |
4320 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4321 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4322 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4323 | return false; | |
4324 | } | |
4325 | ||
4326 | return true; | |
4327 | } | |
4328 | ||
4329 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4330 | method. */ | |
4331 | ||
c62446b1 | 4332 | static void |
5c58de74 PA |
4333 | test_mapped_index_find_name_component_bounds () |
4334 | { | |
4335 | mock_mapped_index mock_index (test_symbols); | |
4336 | ||
fcf23d5b | 4337 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4338 | |
4339 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4340 | method in completion mode. */ | |
4341 | { | |
4342 | static const char *expected_syms[] = { | |
4343 | "t1_func", | |
4344 | "t1_func1", | |
5c58de74 PA |
4345 | }; |
4346 | ||
fcf23d5b SM |
4347 | SELF_CHECK (check_find_bounds_finds |
4348 | (mock_index, "t1_func", expected_syms, | |
4349 | NULL /* per_objfile */)); | |
5c58de74 PA |
4350 | } |
4351 | ||
4352 | /* Check that the increment-last-char in the name matching algorithm | |
4353 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4354 | { | |
4355 | static const char *expected_syms1[] = { | |
4356 | "\377", | |
4357 | "\377\377123", | |
4358 | }; | |
fcf23d5b SM |
4359 | SELF_CHECK (check_find_bounds_finds |
4360 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4361 | |
4362 | static const char *expected_syms2[] = { | |
4363 | "\377\377123", | |
4364 | }; | |
fcf23d5b SM |
4365 | SELF_CHECK (check_find_bounds_finds |
4366 | (mock_index, "\377\377", expected_syms2, | |
4367 | NULL /* per_objfile */)); | |
5c58de74 PA |
4368 | } |
4369 | } | |
4370 | ||
4371 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4372 | ||
4373 | static void | |
4374 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4375 | { |
4376 | mock_mapped_index mock_index (test_symbols); | |
4377 | ||
4378 | /* We let all tests run until the end even if some fails, for debug | |
4379 | convenience. */ | |
4380 | bool any_mismatch = false; | |
4381 | ||
4382 | /* Create the expected symbols list (an initializer_list). Needed | |
4383 | because lists have commas, and we need to pass them to CHECK, | |
4384 | which is a macro. */ | |
4385 | #define EXPECT(...) { __VA_ARGS__ } | |
4386 | ||
4387 | /* Wrapper for check_match that passes down the current | |
4388 | __FILE__/__LINE__. */ | |
4389 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4390 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4391 | mock_index, \ | |
4392 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4393 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4394 | |
4395 | /* Identity checks. */ | |
4396 | for (const char *sym : test_symbols) | |
4397 | { | |
4398 | /* Should be able to match all existing symbols. */ | |
4399 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4400 | EXPECT (sym)); | |
4401 | ||
4402 | /* Should be able to match all existing symbols with | |
4403 | parameters. */ | |
4404 | std::string with_params = std::string (sym) + "(int)"; | |
4405 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4406 | EXPECT (sym)); | |
4407 | ||
4408 | /* Should be able to match all existing symbols with | |
4409 | parameters and qualifiers. */ | |
4410 | with_params = std::string (sym) + " ( int ) const"; | |
4411 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4412 | EXPECT (sym)); | |
4413 | ||
4414 | /* This should really find sym, but cp-name-parser.y doesn't | |
4415 | know about lvalue/rvalue qualifiers yet. */ | |
4416 | with_params = std::string (sym) + " ( int ) &&"; | |
4417 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4418 | {}); | |
4419 | } | |
4420 | ||
e1ef7d7a PA |
4421 | /* Check that the name matching algorithm for completion doesn't get |
4422 | confused with Latin1 'ÿ' / 0xff. */ | |
4423 | { | |
4424 | static const char str[] = "\377"; | |
4425 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4426 | EXPECT ("\377", "\377\377123")); | |
4427 | } | |
4428 | ||
4429 | /* Check that the increment-last-char in the matching algorithm for | |
4430 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4431 | { | |
4432 | static const char str[] = "t1_func"; | |
4433 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4434 | EXPECT ("t1_func", "t1_func1")); | |
4435 | } | |
4436 | ||
c62446b1 PA |
4437 | /* Check that completion mode works at each prefix of the expected |
4438 | symbol name. */ | |
4439 | { | |
4440 | static const char str[] = "function(int)"; | |
4441 | size_t len = strlen (str); | |
4442 | std::string lookup; | |
4443 | ||
4444 | for (size_t i = 1; i < len; i++) | |
4445 | { | |
4446 | lookup.assign (str, i); | |
4447 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4448 | EXPECT ("function")); | |
4449 | } | |
4450 | } | |
4451 | ||
4452 | /* While "w" is a prefix of both components, the match function | |
4453 | should still only be called once. */ | |
4454 | { | |
4455 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4456 | EXPECT ("w1::w2")); | |
a20714ff PA |
4457 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4458 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4459 | } |
4460 | ||
4461 | /* Same, with a "complicated" symbol. */ | |
4462 | { | |
4463 | static const char str[] = Z_SYM_NAME; | |
4464 | size_t len = strlen (str); | |
4465 | std::string lookup; | |
4466 | ||
4467 | for (size_t i = 1; i < len; i++) | |
4468 | { | |
4469 | lookup.assign (str, i); | |
4470 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4471 | EXPECT (Z_SYM_NAME)); | |
4472 | } | |
4473 | } | |
4474 | ||
4475 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4476 | { | |
4477 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4478 | {}); | |
4479 | } | |
4480 | ||
4481 | /* A complete symbol with parameters matches any overload, since the | |
4482 | index has no overload info. */ | |
4483 | { | |
4484 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4485 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4486 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4487 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4488 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4489 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4490 | } |
4491 | ||
4492 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4493 | template argument list. */ | |
4494 | { | |
4495 | static const char expected[] = "ns::foo<int>"; | |
4496 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4497 | EXPECT (expected)); | |
a20714ff PA |
4498 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4499 | EXPECT (expected)); | |
c62446b1 PA |
4500 | } |
4501 | ||
4502 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4503 | template argument list that includes a pointer. */ | |
4504 | { | |
4505 | static const char expected[] = "ns::foo<char*>"; | |
4506 | /* Try both completion and non-completion modes. */ | |
4507 | static const bool completion_mode[2] = {false, true}; | |
4508 | for (size_t i = 0; i < 2; i++) | |
4509 | { | |
4510 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4511 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4512 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4513 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4514 | |
4515 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4516 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4517 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4518 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4519 | } |
4520 | } | |
4521 | ||
4522 | { | |
4523 | /* Check method qualifiers are ignored. */ | |
4524 | static const char expected[] = "ns::foo<char*>"; | |
4525 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4526 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4527 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4528 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4529 | CHECK_MATCH ("foo < char * > ( int ) const", |
4530 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4531 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4532 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4533 | } |
4534 | ||
4535 | /* Test lookup names that don't match anything. */ | |
4536 | { | |
a20714ff PA |
4537 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4538 | {}); | |
4539 | ||
c62446b1 PA |
4540 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4541 | {}); | |
4542 | } | |
4543 | ||
a20714ff PA |
4544 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4545 | which should not be confused with a parameter list. */ | |
4546 | { | |
4547 | static const char *syms[] = { | |
4548 | "A::B::C", | |
4549 | "B::C", | |
4550 | "C", | |
4551 | "A :: B :: C ( int )", | |
4552 | "B :: C ( int )", | |
4553 | "C ( int )", | |
4554 | }; | |
4555 | ||
4556 | for (const char *s : syms) | |
4557 | { | |
4558 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4559 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4560 | } | |
4561 | } | |
4562 | ||
4563 | { | |
4564 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4565 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4566 | EXPECT (expected)); | |
4567 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4568 | EXPECT (expected)); | |
4569 | } | |
4570 | ||
c62446b1 PA |
4571 | SELF_CHECK (!any_mismatch); |
4572 | ||
4573 | #undef EXPECT | |
4574 | #undef CHECK_MATCH | |
4575 | } | |
4576 | ||
5c58de74 PA |
4577 | static void |
4578 | run_test () | |
4579 | { | |
4580 | test_mapped_index_find_name_component_bounds (); | |
4581 | test_dw2_expand_symtabs_matching_symbol (); | |
4582 | } | |
4583 | ||
c62446b1 PA |
4584 | }} // namespace selftests::dw2_expand_symtabs_matching |
4585 | ||
4586 | #endif /* GDB_SELF_TEST */ | |
4587 | ||
4b514bc8 JK |
4588 | /* If FILE_MATCHER is NULL or if PER_CU has |
4589 | dwarf2_per_cu_quick_data::MARK set (see | |
4590 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4591 | EXPANSION_NOTIFY on it. */ | |
4592 | ||
4593 | static void | |
4594 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4595 | (dwarf2_per_cu_data *per_cu, |
4596 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4597 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4598 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4599 | { | |
4600 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4601 | { | |
af758d11 | 4602 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4603 | |
97a1449a SM |
4604 | compunit_symtab *symtab |
4605 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4606 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4607 | |
af758d11 SM |
4608 | if (expansion_notify != NULL && symtab_was_null) |
4609 | expansion_notify (symtab); | |
4b514bc8 JK |
4610 | } |
4611 | } | |
4612 | ||
3f563c84 PA |
4613 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4614 | matched, to expand corresponding CUs that were marked. IDX is the | |
4615 | index of the symbol name that matched. */ | |
4616 | ||
4617 | static void | |
4618 | dw2_expand_marked_cus | |
976ca316 | 4619 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4620 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4621 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4622 | search_domain kind) | |
4623 | { | |
3f563c84 PA |
4624 | offset_type *vec, vec_len, vec_idx; |
4625 | bool global_seen = false; | |
976ca316 | 4626 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4627 | |
61920122 | 4628 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4629 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4630 | vec_len = MAYBE_SWAP (vec[0]); |
4631 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4632 | { | |
61920122 PA |
4633 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4634 | /* This value is only valid for index versions >= 7. */ | |
4635 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4636 | gdb_index_symbol_kind symbol_kind = | |
4637 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4638 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4639 | /* Only check the symbol attributes if they're present. | |
4640 | Indices prior to version 7 don't record them, | |
4641 | and indices >= 7 may elide them for certain symbols | |
4642 | (gold does this). */ | |
4643 | int attrs_valid = | |
4644 | (index.version >= 7 | |
4645 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4646 | ||
4647 | /* Work around gold/15646. */ | |
f030440d TV |
4648 | if (attrs_valid |
4649 | && !is_static | |
4650 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4651 | { |
f030440d | 4652 | if (global_seen) |
61920122 | 4653 | continue; |
f030440d TV |
4654 | |
4655 | global_seen = true; | |
61920122 | 4656 | } |
3190f0c6 | 4657 | |
61920122 PA |
4658 | /* Only check the symbol's kind if it has one. */ |
4659 | if (attrs_valid) | |
4660 | { | |
4661 | switch (kind) | |
8943b874 | 4662 | { |
61920122 PA |
4663 | case VARIABLES_DOMAIN: |
4664 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4665 | continue; | |
4666 | break; | |
4667 | case FUNCTIONS_DOMAIN: | |
4668 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4669 | continue; |
61920122 PA |
4670 | break; |
4671 | case TYPES_DOMAIN: | |
4672 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4673 | continue; | |
4674 | break; | |
59c35742 AB |
4675 | case MODULES_DOMAIN: |
4676 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4677 | continue; | |
4678 | break; | |
61920122 PA |
4679 | default: |
4680 | break; | |
8943b874 | 4681 | } |
61920122 | 4682 | } |
8943b874 | 4683 | |
61920122 | 4684 | /* Don't crash on bad data. */ |
976ca316 SM |
4685 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
4686 | + per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4687 | { |
b98664d3 | 4688 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4689 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4690 | continue; |
4691 | } | |
4692 | ||
976ca316 SM |
4693 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
4694 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, | |
4b514bc8 | 4695 | expansion_notify); |
61920122 PA |
4696 | } |
4697 | } | |
4698 | ||
4b514bc8 JK |
4699 | /* If FILE_MATCHER is non-NULL, set all the |
4700 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4701 | that match FILE_MATCHER. */ | |
4702 | ||
61920122 | 4703 | static void |
4b514bc8 | 4704 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4705 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4706 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4707 | { |
4b514bc8 | 4708 | if (file_matcher == NULL) |
61920122 PA |
4709 | return; |
4710 | ||
4b514bc8 JK |
4711 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4712 | htab_eq_pointer, | |
4713 | NULL, xcalloc, xfree)); | |
4714 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4715 | htab_eq_pointer, |
4716 | NULL, xcalloc, xfree)); | |
61920122 | 4717 | |
4b514bc8 JK |
4718 | /* The rule is CUs specify all the files, including those used by |
4719 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4720 | |
976ca316 | 4721 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4722 | { |
927aa2e7 JK |
4723 | QUIT; |
4724 | ||
4725 | per_cu->v.quick->mark = 0; | |
4726 | ||
4727 | /* We only need to look at symtabs not already expanded. */ | |
976ca316 | 4728 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4729 | continue; |
4730 | ||
976ca316 | 4731 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4732 | if (file_data == NULL) |
4733 | continue; | |
4734 | ||
4735 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4736 | continue; | |
4737 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4738 | { | |
4739 | per_cu->v.quick->mark = 1; | |
4740 | continue; | |
4741 | } | |
4742 | ||
b76e467d | 4743 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4744 | { |
4745 | const char *this_real_name; | |
4746 | ||
4747 | if (file_matcher (file_data->file_names[j], false)) | |
4748 | { | |
4749 | per_cu->v.quick->mark = 1; | |
4750 | break; | |
4751 | } | |
4752 | ||
4753 | /* Before we invoke realpath, which can get expensive when many | |
4754 | files are involved, do a quick comparison of the basenames. */ | |
4755 | if (!basenames_may_differ | |
4756 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4757 | true)) | |
4758 | continue; | |
4759 | ||
976ca316 | 4760 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4761 | if (file_matcher (this_real_name, false)) |
4762 | { | |
4763 | per_cu->v.quick->mark = 1; | |
4764 | break; | |
4765 | } | |
4766 | } | |
4767 | ||
b76e467d SM |
4768 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4769 | ? visited_found.get () | |
4770 | : visited_not_found.get (), | |
4771 | file_data, INSERT); | |
927aa2e7 JK |
4772 | *slot = file_data; |
4773 | } | |
4774 | } | |
4775 | ||
4776 | static void | |
4777 | dw2_expand_symtabs_matching | |
4778 | (struct objfile *objfile, | |
4779 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4780 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4781 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4782 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4783 | enum search_domain kind) | |
4784 | { | |
976ca316 | 4785 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4786 | |
4787 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4788 | if (!per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4789 | return; |
4790 | ||
976ca316 | 4791 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4792 | |
c1a66c06 TV |
4793 | if (symbol_matcher == NULL && lookup_name == NULL) |
4794 | { | |
976ca316 | 4795 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4796 | { |
4797 | QUIT; | |
4798 | ||
976ca316 | 4799 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
97a1449a | 4800 | file_matcher, expansion_notify); |
c1a66c06 TV |
4801 | } |
4802 | return; | |
4803 | } | |
4804 | ||
976ca316 | 4805 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4806 | |
c1a66c06 | 4807 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4808 | symbol_matcher, |
4809 | kind, [&] (offset_type idx) | |
4810 | { | |
976ca316 SM |
4811 | dw2_expand_marked_cus (per_objfile, idx, file_matcher, expansion_notify, |
4812 | kind); | |
3b00ef10 | 4813 | return true; |
976ca316 | 4814 | }, per_objfile); |
927aa2e7 JK |
4815 | } |
4816 | ||
4817 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4818 | symtab. */ | |
4819 | ||
4820 | static struct compunit_symtab * | |
4821 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4822 | CORE_ADDR pc) | |
4823 | { | |
4824 | int i; | |
4825 | ||
4826 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4827 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4828 | return cust; | |
4829 | ||
4830 | if (cust->includes == NULL) | |
4831 | return NULL; | |
4832 | ||
4833 | for (i = 0; cust->includes[i]; ++i) | |
4834 | { | |
4835 | struct compunit_symtab *s = cust->includes[i]; | |
4836 | ||
4837 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4838 | if (s != NULL) | |
4839 | return s; | |
4840 | } | |
4841 | ||
4842 | return NULL; | |
4843 | } | |
4844 | ||
4845 | static struct compunit_symtab * | |
4846 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4847 | struct bound_minimal_symbol msymbol, | |
4848 | CORE_ADDR pc, | |
4849 | struct obj_section *section, | |
4850 | int warn_if_readin) | |
4851 | { | |
4852 | struct dwarf2_per_cu_data *data; | |
4853 | struct compunit_symtab *result; | |
4854 | ||
d320c2b5 | 4855 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4856 | return NULL; |
4857 | ||
b3b3bada | 4858 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4859 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4860 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4861 | if (!data) |
4862 | return NULL; | |
4863 | ||
af758d11 SM |
4864 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4865 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 4866 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4867 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4868 | |
97a1449a SM |
4869 | result = recursively_find_pc_sect_compunit_symtab |
4870 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4871 | ||
927aa2e7 JK |
4872 | gdb_assert (result != NULL); |
4873 | return result; | |
4874 | } | |
4875 | ||
4876 | static void | |
4877 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4878 | void *data, int need_fullname) | |
4879 | { | |
976ca316 | 4880 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 4881 | |
976ca316 | 4882 | if (!per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4883 | { |
976ca316 | 4884 | per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4885 | |
4886 | htab_up visited (htab_create_alloc (10, | |
4887 | htab_hash_pointer, htab_eq_pointer, | |
4888 | NULL, xcalloc, xfree)); | |
4889 | ||
4890 | /* The rule is CUs specify all the files, including those used | |
4891 | by any TU, so there's no need to scan TUs here. We can | |
4892 | ignore file names coming from already-expanded CUs. */ | |
4893 | ||
976ca316 | 4894 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4895 | { |
976ca316 | 4896 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4897 | { |
4898 | void **slot = htab_find_slot (visited.get (), | |
4899 | per_cu->v.quick->file_names, | |
4900 | INSERT); | |
4901 | ||
4902 | *slot = per_cu->v.quick->file_names; | |
4903 | } | |
4904 | } | |
4905 | ||
976ca316 | 4906 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4907 | { |
927aa2e7 | 4908 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 4909 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4910 | continue; |
4911 | ||
ab432490 | 4912 | quick_file_names *file_data |
976ca316 | 4913 | = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4914 | if (file_data == NULL) |
4915 | continue; | |
4916 | ||
b76e467d | 4917 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4918 | if (*slot) |
4919 | { | |
4920 | /* Already visited. */ | |
4921 | continue; | |
4922 | } | |
4923 | *slot = file_data; | |
4924 | ||
4925 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4926 | { | |
4927 | const char *filename = file_data->file_names[j]; | |
976ca316 | 4928 | per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
4929 | } |
4930 | } | |
4931 | } | |
4932 | ||
976ca316 | 4933 | per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
4934 | { |
4935 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4936 | ||
4937 | if (need_fullname) | |
4938 | this_real_name = gdb_realpath (filename); | |
4939 | (*fun) (filename, this_real_name.get (), data); | |
4940 | }); | |
4941 | } | |
4942 | ||
4943 | static int | |
4944 | dw2_has_symbols (struct objfile *objfile) | |
4945 | { | |
4946 | return 1; | |
4947 | } | |
4948 | ||
4949 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4950 | { | |
4951 | dw2_has_symbols, | |
4952 | dw2_find_last_source_symtab, | |
4953 | dw2_forget_cached_source_info, | |
4954 | dw2_map_symtabs_matching_filename, | |
4955 | dw2_lookup_symbol, | |
d3214198 | 4956 | NULL, |
927aa2e7 JK |
4957 | dw2_print_stats, |
4958 | dw2_dump, | |
927aa2e7 JK |
4959 | dw2_expand_symtabs_for_function, |
4960 | dw2_expand_all_symtabs, | |
4961 | dw2_expand_symtabs_with_fullname, | |
4962 | dw2_map_matching_symbols, | |
4963 | dw2_expand_symtabs_matching, | |
4964 | dw2_find_pc_sect_compunit_symtab, | |
4965 | NULL, | |
4966 | dw2_map_symbol_filenames | |
4967 | }; | |
4968 | ||
4969 | /* DWARF-5 debug_names reader. */ | |
4970 | ||
4971 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4972 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4973 | ||
4974 | /* A helper function that reads the .debug_names section in SECTION | |
4975 | and fills in MAP. FILENAME is the name of the file containing the | |
4976 | section; it is used for error reporting. | |
4977 | ||
4978 | Returns true if all went well, false otherwise. */ | |
4979 | ||
4980 | static bool | |
4981 | read_debug_names_from_section (struct objfile *objfile, | |
4982 | const char *filename, | |
4983 | struct dwarf2_section_info *section, | |
4984 | mapped_debug_names &map) | |
4985 | { | |
96b79293 | 4986 | if (section->empty ()) |
927aa2e7 JK |
4987 | return false; |
4988 | ||
4989 | /* Older elfutils strip versions could keep the section in the main | |
4990 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4991 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4992 | return false; |
4993 | ||
96b79293 | 4994 | section->read (objfile); |
927aa2e7 | 4995 | |
08feed99 | 4996 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
4997 | |
4998 | const gdb_byte *addr = section->buffer; | |
4999 | ||
96b79293 | 5000 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
5001 | |
5002 | unsigned int bytes_read; | |
5003 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5004 | addr += bytes_read; | |
5005 | ||
5006 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5007 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5008 | if (bytes_read + length != section->size) | |
5009 | { | |
5010 | /* There may be multiple per-CU indices. */ | |
5011 | warning (_("Section .debug_names in %s length %s does not match " | |
5012 | "section length %s, ignoring .debug_names."), | |
5013 | filename, plongest (bytes_read + length), | |
5014 | pulongest (section->size)); | |
5015 | return false; | |
5016 | } | |
5017 | ||
5018 | /* The version number. */ | |
5019 | uint16_t version = read_2_bytes (abfd, addr); | |
5020 | addr += 2; | |
5021 | if (version != 5) | |
5022 | { | |
5023 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5024 | "ignoring .debug_names."), | |
5025 | filename, version); | |
5026 | return false; | |
5027 | } | |
5028 | ||
5029 | /* Padding. */ | |
5030 | uint16_t padding = read_2_bytes (abfd, addr); | |
5031 | addr += 2; | |
5032 | if (padding != 0) | |
5033 | { | |
5034 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5035 | "ignoring .debug_names."), | |
5036 | filename, padding); | |
5037 | return false; | |
5038 | } | |
5039 | ||
5040 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5041 | map.cu_count = read_4_bytes (abfd, addr); | |
5042 | addr += 4; | |
5043 | ||
5044 | /* local_type_unit_count - The number of TUs in the local TU | |
5045 | list. */ | |
5046 | map.tu_count = read_4_bytes (abfd, addr); | |
5047 | addr += 4; | |
5048 | ||
5049 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5050 | list. */ | |
5051 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5052 | addr += 4; | |
5053 | if (foreign_tu_count != 0) | |
5054 | { | |
5055 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5056 | "ignoring .debug_names."), | |
5057 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5058 | return false; | |
5059 | } | |
5060 | ||
5061 | /* bucket_count - The number of hash buckets in the hash lookup | |
5062 | table. */ | |
5063 | map.bucket_count = read_4_bytes (abfd, addr); | |
5064 | addr += 4; | |
5065 | ||
5066 | /* name_count - The number of unique names in the index. */ | |
5067 | map.name_count = read_4_bytes (abfd, addr); | |
5068 | addr += 4; | |
5069 | ||
5070 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5071 | table. */ | |
5072 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5073 | addr += 4; | |
5074 | ||
5075 | /* augmentation_string_size - The size in bytes of the augmentation | |
5076 | string. This value is rounded up to a multiple of 4. */ | |
5077 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5078 | addr += 4; | |
5079 | map.augmentation_is_gdb = ((augmentation_string_size | |
5080 | == sizeof (dwarf5_augmentation)) | |
5081 | && memcmp (addr, dwarf5_augmentation, | |
5082 | sizeof (dwarf5_augmentation)) == 0); | |
5083 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5084 | addr += augmentation_string_size; | |
5085 | ||
5086 | /* List of CUs */ | |
5087 | map.cu_table_reordered = addr; | |
5088 | addr += map.cu_count * map.offset_size; | |
5089 | ||
5090 | /* List of Local TUs */ | |
5091 | map.tu_table_reordered = addr; | |
5092 | addr += map.tu_count * map.offset_size; | |
5093 | ||
5094 | /* Hash Lookup Table */ | |
5095 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5096 | addr += map.bucket_count * 4; | |
5097 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5098 | addr += map.name_count * 4; | |
5099 | ||
5100 | /* Name Table */ | |
5101 | map.name_table_string_offs_reordered = addr; | |
5102 | addr += map.name_count * map.offset_size; | |
5103 | map.name_table_entry_offs_reordered = addr; | |
5104 | addr += map.name_count * map.offset_size; | |
5105 | ||
5106 | const gdb_byte *abbrev_table_start = addr; | |
5107 | for (;;) | |
5108 | { | |
927aa2e7 JK |
5109 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5110 | addr += bytes_read; | |
5111 | if (index_num == 0) | |
5112 | break; | |
5113 | ||
5114 | const auto insertpair | |
5115 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5116 | if (!insertpair.second) | |
5117 | { | |
5118 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5119 | "ignoring .debug_names."), | |
5120 | filename, pulongest (index_num)); | |
5121 | return false; | |
5122 | } | |
5123 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5124 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5125 | addr += bytes_read; | |
5126 | ||
5127 | for (;;) | |
5128 | { | |
5129 | mapped_debug_names::index_val::attr attr; | |
5130 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5131 | addr += bytes_read; | |
5132 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5133 | addr += bytes_read; | |
5134 | if (attr.form == DW_FORM_implicit_const) | |
5135 | { | |
5136 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5137 | &bytes_read); | |
5138 | addr += bytes_read; | |
5139 | } | |
5140 | if (attr.dw_idx == 0 && attr.form == 0) | |
5141 | break; | |
5142 | indexval.attr_vec.push_back (std::move (attr)); | |
5143 | } | |
5144 | } | |
5145 | if (addr != abbrev_table_start + abbrev_table_size) | |
5146 | { | |
5147 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5148 | "of size %s vs. written as %u, ignoring .debug_names."), |
5149 | filename, plongest (addr - abbrev_table_start), | |
5150 | abbrev_table_size); | |
927aa2e7 JK |
5151 | return false; |
5152 | } | |
5153 | map.entry_pool = addr; | |
5154 | ||
5155 | return true; | |
5156 | } | |
5157 | ||
5158 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5159 | list. */ | |
5160 | ||
5161 | static void | |
168c9250 | 5162 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5163 | const mapped_debug_names &map, |
5164 | dwarf2_section_info §ion, | |
b76e467d | 5165 | bool is_dwz) |
927aa2e7 | 5166 | { |
3ee6bb11 TV |
5167 | if (!map.augmentation_is_gdb) |
5168 | { | |
5169 | for (uint32_t i = 0; i < map.cu_count; ++i) | |
5170 | { | |
5171 | sect_offset sect_off | |
5172 | = (sect_offset) (extract_unsigned_integer | |
5173 | (map.cu_table_reordered + i * map.offset_size, | |
5174 | map.offset_size, | |
5175 | map.dwarf5_byte_order)); | |
5176 | /* We don't know the length of the CU, because the CU list in a | |
5177 | .debug_names index can be incomplete, so we can't use the start of | |
5178 | the next CU as end of this CU. We create the CUs here with length 0, | |
5179 | and in cutu_reader::cutu_reader we'll fill in the actual length. */ | |
5180 | dwarf2_per_cu_data *per_cu | |
168c9250 SM |
5181 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, sect_off, 0); |
5182 | per_bfd->all_comp_units.push_back (per_cu); | |
3ee6bb11 TV |
5183 | } |
5184 | } | |
5185 | ||
927aa2e7 JK |
5186 | sect_offset sect_off_prev; |
5187 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5188 | { | |
5189 | sect_offset sect_off_next; | |
5190 | if (i < map.cu_count) | |
5191 | { | |
5192 | sect_off_next | |
5193 | = (sect_offset) (extract_unsigned_integer | |
5194 | (map.cu_table_reordered + i * map.offset_size, | |
5195 | map.offset_size, | |
5196 | map.dwarf5_byte_order)); | |
5197 | } | |
5198 | else | |
5199 | sect_off_next = (sect_offset) section.size; | |
5200 | if (i >= 1) | |
5201 | { | |
5202 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5203 | dwarf2_per_cu_data *per_cu |
168c9250 | 5204 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5205 | sect_off_prev, length); |
168c9250 | 5206 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5207 | } |
5208 | sect_off_prev = sect_off_next; | |
5209 | } | |
5210 | } | |
5211 | ||
5212 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5213 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5214 | |
5215 | static void | |
168c9250 | 5216 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5217 | const mapped_debug_names &map, |
5218 | const mapped_debug_names &dwz_map) | |
5219 | { | |
168c9250 SM |
5220 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5221 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5222 | |
168c9250 | 5223 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5224 | false /* is_dwz */); |
927aa2e7 JK |
5225 | |
5226 | if (dwz_map.cu_count == 0) | |
5227 | return; | |
5228 | ||
168c9250 SM |
5229 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5230 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5231 | true /* is_dwz */); |
927aa2e7 JK |
5232 | } |
5233 | ||
5234 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5235 | elements of all the CUs and return true. Otherwise, return false. */ | |
5236 | ||
5237 | static bool | |
976ca316 | 5238 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 5239 | { |
fcf23d5b SM |
5240 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5241 | mapped_debug_names dwz_map; | |
976ca316 | 5242 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 5243 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
5244 | |
5245 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
976ca316 | 5246 | &per_objfile->per_bfd->debug_names, *map)) |
927aa2e7 JK |
5247 | return false; |
5248 | ||
5249 | /* Don't use the index if it's empty. */ | |
22ca247e | 5250 | if (map->name_count == 0) |
927aa2e7 JK |
5251 | return false; |
5252 | ||
5253 | /* If there is a .dwz file, read it so we can get its CU list as | |
5254 | well. */ | |
f8c41851 | 5255 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5256 | if (dwz != NULL) |
5257 | { | |
5258 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5259 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5260 | &dwz->debug_names, dwz_map)) |
5261 | { | |
5262 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5263 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5264 | return false; |
5265 | } | |
5266 | } | |
5267 | ||
f8c41851 | 5268 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5269 | |
22ca247e | 5270 | if (map->tu_count != 0) |
927aa2e7 JK |
5271 | { |
5272 | /* We can only handle a single .debug_types when we have an | |
5273 | index. */ | |
f8c41851 | 5274 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5275 | return false; |
5276 | ||
f8c41851 | 5277 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5278 | |
5279 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5280 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5281 | } |
5282 | ||
f8c41851 | 5283 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5284 | |
f8c41851 SM |
5285 | per_bfd->debug_names_table = std::move (map); |
5286 | per_bfd->using_index = 1; | |
5287 | per_bfd->quick_file_names_table = | |
976ca316 | 5288 | create_quick_file_names_table (per_objfile->per_bfd->all_comp_units.size ()); |
927aa2e7 | 5289 | |
f8c41851 SM |
5290 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent |
5291 | objfiles using the same BFD. */ | |
5292 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
5293 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
5294 | ||
927aa2e7 JK |
5295 | return true; |
5296 | } | |
5297 | ||
927aa2e7 JK |
5298 | /* Type used to manage iterating over all CUs looking for a symbol for |
5299 | .debug_names. */ | |
5300 | ||
5301 | class dw2_debug_names_iterator | |
5302 | { | |
5303 | public: | |
927aa2e7 | 5304 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5305 | gdb::optional<block_enum> block_index, |
5306 | domain_enum domain, | |
fcf23d5b | 5307 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5308 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5309 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5310 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5311 | {} |
5312 | ||
5313 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
fcf23d5b | 5314 | search_domain search, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5315 | : m_map (map), |
5316 | m_search (search), | |
fcf23d5b SM |
5317 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5318 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5319 | {} |
5320 | ||
3b00ef10 TT |
5321 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5322 | block_enum block_index, domain_enum domain, | |
fcf23d5b | 5323 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5324 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5325 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5326 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5327 | {} |
5328 | ||
927aa2e7 JK |
5329 | /* Return the next matching CU or NULL if there are no more. */ |
5330 | dwarf2_per_cu_data *next (); | |
5331 | ||
5332 | private: | |
5333 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5334 | const char *name, |
5335 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5336 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5337 | uint32_t namei, |
5338 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5339 | |
5340 | /* The internalized form of .debug_names. */ | |
5341 | const mapped_debug_names &m_map; | |
5342 | ||
2b79f376 SM |
5343 | /* If set, only look for symbols that match that block. Valid values are |
5344 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5345 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5346 | |
5347 | /* The kind of symbol we're looking for. */ | |
5348 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5349 | const search_domain m_search = ALL_DOMAIN; | |
5350 | ||
5351 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5352 | not found. */ | |
5353 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5354 | |
5355 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5356 | }; |
5357 | ||
5358 | const char * | |
fcf23d5b | 5359 | mapped_debug_names::namei_to_name |
976ca316 | 5360 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5361 | { |
5362 | const ULONGEST namei_string_offs | |
5363 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5364 | + namei * offset_size), | |
5365 | offset_size, | |
5366 | dwarf5_byte_order); | |
976ca316 | 5367 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5368 | } |
5369 | ||
5370 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5371 | found, return pointer to its pool data. If NAME cannot be found, | |
5372 | return NULL. */ | |
5373 | ||
5374 | const gdb_byte * | |
5375 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5376 | (const mapped_debug_names &map, const char *name, |
5377 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5378 | { |
5379 | int (*cmp) (const char *, const char *); | |
5380 | ||
54ee4252 | 5381 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5382 | if (current_language->la_language == language_cplus |
5383 | || current_language->la_language == language_fortran | |
5384 | || current_language->la_language == language_d) | |
5385 | { | |
5386 | /* NAME is already canonical. Drop any qualifiers as | |
5387 | .debug_names does not contain any. */ | |
5388 | ||
5389 | if (strchr (name, '(') != NULL) | |
5390 | { | |
54ee4252 | 5391 | without_params = cp_remove_params (name); |
927aa2e7 | 5392 | if (without_params != NULL) |
54ee4252 | 5393 | name = without_params.get (); |
927aa2e7 JK |
5394 | } |
5395 | } | |
5396 | ||
5397 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5398 | ||
5399 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5400 | uint32_t namei | |
5401 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5402 | (map.bucket_table_reordered | |
5403 | + (full_hash % map.bucket_count)), 4, | |
5404 | map.dwarf5_byte_order); | |
5405 | if (namei == 0) | |
5406 | return NULL; | |
5407 | --namei; | |
5408 | if (namei >= map.name_count) | |
5409 | { | |
b98664d3 | 5410 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5411 | "[in module %s]"), |
5412 | namei, map.name_count, | |
fcf23d5b | 5413 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5414 | return NULL; |
5415 | } | |
5416 | ||
5417 | for (;;) | |
5418 | { | |
5419 | const uint32_t namei_full_hash | |
5420 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5421 | (map.hash_table_reordered + namei), 4, | |
5422 | map.dwarf5_byte_order); | |
5423 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5424 | return NULL; | |
5425 | ||
5426 | if (full_hash == namei_full_hash) | |
5427 | { | |
fcf23d5b | 5428 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5429 | |
5430 | #if 0 /* An expensive sanity check. */ | |
5431 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5432 | { | |
b98664d3 | 5433 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5434 | "[in module %s]"), |
5435 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5436 | return NULL; | |
5437 | } | |
5438 | #endif | |
5439 | ||
5440 | if (cmp (namei_string, name) == 0) | |
5441 | { | |
5442 | const ULONGEST namei_entry_offs | |
5443 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5444 | + namei * map.offset_size), | |
5445 | map.offset_size, map.dwarf5_byte_order); | |
5446 | return map.entry_pool + namei_entry_offs; | |
5447 | } | |
5448 | } | |
5449 | ||
5450 | ++namei; | |
5451 | if (namei >= map.name_count) | |
5452 | return NULL; | |
5453 | } | |
5454 | } | |
5455 | ||
5456 | const gdb_byte * | |
5457 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5458 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5459 | { |
5460 | if (namei >= map.name_count) | |
5461 | { | |
b98664d3 | 5462 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5463 | "[in module %s]"), |
5464 | namei, map.name_count, | |
fcf23d5b | 5465 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5466 | return NULL; |
5467 | } | |
5468 | ||
5469 | const ULONGEST namei_entry_offs | |
5470 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5471 | + namei * map.offset_size), | |
5472 | map.offset_size, map.dwarf5_byte_order); | |
5473 | return map.entry_pool + namei_entry_offs; | |
5474 | } | |
5475 | ||
5476 | /* See dw2_debug_names_iterator. */ | |
5477 | ||
5478 | dwarf2_per_cu_data * | |
5479 | dw2_debug_names_iterator::next () | |
5480 | { | |
5481 | if (m_addr == NULL) | |
5482 | return NULL; | |
5483 | ||
fcf23d5b SM |
5484 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5485 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5486 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5487 | |
5488 | again: | |
5489 | ||
5490 | unsigned int bytes_read; | |
5491 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5492 | m_addr += bytes_read; | |
5493 | if (abbrev == 0) | |
5494 | return NULL; | |
5495 | ||
5496 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5497 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5498 | { | |
b98664d3 | 5499 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5500 | "[in module %s]"), |
ed2dc618 | 5501 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5502 | return NULL; |
5503 | } | |
5504 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5505 | enum class symbol_linkage { |
5506 | unknown, | |
5507 | static_, | |
5508 | extern_, | |
23c13d42 | 5509 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5510 | dwarf2_per_cu_data *per_cu = NULL; |
5511 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5512 | { | |
5513 | ULONGEST ull; | |
5514 | switch (attr.form) | |
5515 | { | |
5516 | case DW_FORM_implicit_const: | |
5517 | ull = attr.implicit_const; | |
5518 | break; | |
5519 | case DW_FORM_flag_present: | |
5520 | ull = 1; | |
5521 | break; | |
5522 | case DW_FORM_udata: | |
5523 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5524 | m_addr += bytes_read; | |
5525 | break; | |
6dc55ce9 | 5526 | case DW_FORM_ref4: |
5527 | ull = read_4_bytes (abfd, m_addr); | |
5528 | m_addr += 4; | |
5529 | break; | |
5530 | case DW_FORM_ref8: | |
5531 | ull = read_8_bytes (abfd, m_addr); | |
5532 | m_addr += 8; | |
5533 | break; | |
5534 | case DW_FORM_ref_sig8: | |
5535 | ull = read_8_bytes (abfd, m_addr); | |
5536 | m_addr += 8; | |
5537 | break; | |
927aa2e7 | 5538 | default: |
b98664d3 | 5539 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5540 | dwarf_form_name (attr.form), |
ed2dc618 | 5541 | objfile_name (objfile)); |
927aa2e7 JK |
5542 | return NULL; |
5543 | } | |
5544 | switch (attr.dw_idx) | |
5545 | { | |
5546 | case DW_IDX_compile_unit: | |
5547 | /* Don't crash on bad data. */ | |
fcf23d5b | 5548 | if (ull >= m_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5549 | { |
b98664d3 | 5550 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5551 | " [in module %s]"), |
5552 | pulongest (ull), | |
fcf23d5b | 5553 | objfile_name (objfile)); |
927aa2e7 JK |
5554 | continue; |
5555 | } | |
fcf23d5b | 5556 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5557 | break; |
8af5c486 JK |
5558 | case DW_IDX_type_unit: |
5559 | /* Don't crash on bad data. */ | |
fcf23d5b | 5560 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5561 | { |
b98664d3 | 5562 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5563 | " [in module %s]"), |
5564 | pulongest (ull), | |
fcf23d5b | 5565 | objfile_name (objfile)); |
8af5c486 JK |
5566 | continue; |
5567 | } | |
fcf23d5b | 5568 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5569 | break; |
6dc55ce9 | 5570 | case DW_IDX_die_offset: |
5571 | /* In a per-CU index (as opposed to a per-module index), index | |
5572 | entries without CU attribute implicitly refer to the single CU. */ | |
5573 | if (per_cu == NULL) | |
fcf23d5b | 5574 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5575 | break; |
927aa2e7 JK |
5576 | case DW_IDX_GNU_internal: |
5577 | if (!m_map.augmentation_is_gdb) | |
5578 | break; | |
23c13d42 | 5579 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5580 | break; |
5581 | case DW_IDX_GNU_external: | |
5582 | if (!m_map.augmentation_is_gdb) | |
5583 | break; | |
23c13d42 | 5584 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5585 | break; |
5586 | } | |
5587 | } | |
5588 | ||
5589 | /* Skip if already read in. */ | |
fcf23d5b | 5590 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5591 | goto again; |
5592 | ||
5593 | /* Check static vs global. */ | |
23c13d42 | 5594 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5595 | { |
2b79f376 | 5596 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5597 | const bool symbol_is_static = |
5598 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5599 | if (want_static != symbol_is_static) |
2b79f376 | 5600 | goto again; |
927aa2e7 JK |
5601 | } |
5602 | ||
5603 | /* Match dw2_symtab_iter_next, symbol_kind | |
5604 | and debug_names::psymbol_tag. */ | |
5605 | switch (m_domain) | |
5606 | { | |
5607 | case VAR_DOMAIN: | |
5608 | switch (indexval.dwarf_tag) | |
5609 | { | |
5610 | case DW_TAG_variable: | |
5611 | case DW_TAG_subprogram: | |
5612 | /* Some types are also in VAR_DOMAIN. */ | |
5613 | case DW_TAG_typedef: | |
5614 | case DW_TAG_structure_type: | |
5615 | break; | |
5616 | default: | |
5617 | goto again; | |
5618 | } | |
5619 | break; | |
5620 | case STRUCT_DOMAIN: | |
5621 | switch (indexval.dwarf_tag) | |
5622 | { | |
5623 | case DW_TAG_typedef: | |
5624 | case DW_TAG_structure_type: | |
5625 | break; | |
5626 | default: | |
5627 | goto again; | |
5628 | } | |
5629 | break; | |
5630 | case LABEL_DOMAIN: | |
5631 | switch (indexval.dwarf_tag) | |
5632 | { | |
5633 | case 0: | |
5634 | case DW_TAG_variable: | |
5635 | break; | |
5636 | default: | |
5637 | goto again; | |
5638 | } | |
5639 | break; | |
59c35742 AB |
5640 | case MODULE_DOMAIN: |
5641 | switch (indexval.dwarf_tag) | |
5642 | { | |
5643 | case DW_TAG_module: | |
5644 | break; | |
5645 | default: | |
5646 | goto again; | |
5647 | } | |
5648 | break; | |
927aa2e7 JK |
5649 | default: |
5650 | break; | |
5651 | } | |
5652 | ||
5653 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5654 | debug_names::psymbol_tag. */ | |
5655 | switch (m_search) | |
4b514bc8 | 5656 | { |
927aa2e7 JK |
5657 | case VARIABLES_DOMAIN: |
5658 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5659 | { |
927aa2e7 JK |
5660 | case DW_TAG_variable: |
5661 | break; | |
5662 | default: | |
5663 | goto again; | |
4b514bc8 | 5664 | } |
927aa2e7 JK |
5665 | break; |
5666 | case FUNCTIONS_DOMAIN: | |
5667 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5668 | { |
927aa2e7 JK |
5669 | case DW_TAG_subprogram: |
5670 | break; | |
5671 | default: | |
5672 | goto again; | |
4b514bc8 | 5673 | } |
927aa2e7 JK |
5674 | break; |
5675 | case TYPES_DOMAIN: | |
5676 | switch (indexval.dwarf_tag) | |
5677 | { | |
5678 | case DW_TAG_typedef: | |
5679 | case DW_TAG_structure_type: | |
5680 | break; | |
5681 | default: | |
5682 | goto again; | |
5683 | } | |
5684 | break; | |
59c35742 AB |
5685 | case MODULES_DOMAIN: |
5686 | switch (indexval.dwarf_tag) | |
5687 | { | |
5688 | case DW_TAG_module: | |
5689 | break; | |
5690 | default: | |
5691 | goto again; | |
5692 | } | |
927aa2e7 JK |
5693 | default: |
5694 | break; | |
4b514bc8 | 5695 | } |
927aa2e7 JK |
5696 | |
5697 | return per_cu; | |
4b514bc8 | 5698 | } |
61920122 | 5699 | |
927aa2e7 | 5700 | static struct compunit_symtab * |
c7f839cb | 5701 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5702 | const char *name, domain_enum domain) |
4b514bc8 | 5703 | { |
976ca316 | 5704 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
61920122 | 5705 | |
976ca316 | 5706 | const auto &mapp = per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5707 | if (!mapp) |
61920122 | 5708 | { |
927aa2e7 JK |
5709 | /* index is NULL if OBJF_READNOW. */ |
5710 | return NULL; | |
5711 | } | |
5712 | const auto &map = *mapp; | |
9291a0cd | 5713 | |
976ca316 | 5714 | dw2_debug_names_iterator iter (map, block_index, domain, name, per_objfile); |
9703b513 | 5715 | |
927aa2e7 JK |
5716 | struct compunit_symtab *stab_best = NULL; |
5717 | struct dwarf2_per_cu_data *per_cu; | |
5718 | while ((per_cu = iter.next ()) != NULL) | |
5719 | { | |
5720 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 5721 | compunit_symtab *stab |
976ca316 | 5722 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 | 5723 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5724 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5725 | |
927aa2e7 JK |
5726 | sym = block_find_symbol (block, name, domain, |
5727 | block_find_non_opaque_type_preferred, | |
5728 | &with_opaque); | |
9703b513 | 5729 | |
927aa2e7 JK |
5730 | /* Some caution must be observed with overloaded functions and |
5731 | methods, since the index will not contain any overload | |
5732 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5733 | |
927aa2e7 | 5734 | if (sym != NULL |
987012b8 | 5735 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5736 | return stab; |
5737 | if (with_opaque != NULL | |
987012b8 | 5738 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5739 | stab_best = stab; |
9703b513 | 5740 | |
927aa2e7 | 5741 | /* Keep looking through other CUs. */ |
9703b513 TT |
5742 | } |
5743 | ||
927aa2e7 | 5744 | return stab_best; |
9703b513 TT |
5745 | } |
5746 | ||
927aa2e7 JK |
5747 | /* This dumps minimal information about .debug_names. It is called |
5748 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5749 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5750 | |
927aa2e7 JK |
5751 | static void |
5752 | dw2_debug_names_dump (struct objfile *objfile) | |
5753 | { | |
976ca316 | 5754 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5755 | |
976ca316 | 5756 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5757 | printf_filtered (".debug_names:"); |
976ca316 | 5758 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5759 | printf_filtered (" exists\n"); |
5760 | else | |
5761 | printf_filtered (" faked for \"readnow\"\n"); | |
5762 | printf_filtered ("\n"); | |
9291a0cd TT |
5763 | } |
5764 | ||
9291a0cd | 5765 | static void |
927aa2e7 JK |
5766 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5767 | const char *func_name) | |
9291a0cd | 5768 | { |
976ca316 | 5769 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 5770 | |
976ca316 SM |
5771 | /* per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5772 | if (per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5773 | { |
976ca316 | 5774 | const mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
24c79950 | 5775 | |
fcf23d5b | 5776 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name, |
976ca316 | 5777 | per_objfile); |
24c79950 | 5778 | |
927aa2e7 JK |
5779 | struct dwarf2_per_cu_data *per_cu; |
5780 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5781 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 JK |
5782 | } |
5783 | } | |
24c79950 | 5784 | |
3b00ef10 TT |
5785 | static void |
5786 | dw2_debug_names_map_matching_symbols | |
5787 | (struct objfile *objfile, | |
5788 | const lookup_name_info &name, domain_enum domain, | |
5789 | int global, | |
5790 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5791 | symbol_compare_ftype *ordered_compare) | |
5792 | { | |
976ca316 | 5793 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5794 | |
5795 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5796 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5797 | return; |
5798 | ||
976ca316 | 5799 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5800 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5801 | ||
5802 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5803 | auto matcher = [&] (const char *symname) | |
5804 | { | |
5805 | if (ordered_compare == nullptr) | |
5806 | return true; | |
5807 | return ordered_compare (symname, match_name) == 0; | |
5808 | }; | |
5809 | ||
5810 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5811 | [&] (offset_type namei) | |
5812 | { | |
5813 | /* The name was matched, now expand corresponding CUs that were | |
5814 | marked. */ | |
fcf23d5b | 5815 | dw2_debug_names_iterator iter (map, block_kind, domain, namei, |
976ca316 | 5816 | per_objfile); |
3b00ef10 TT |
5817 | |
5818 | struct dwarf2_per_cu_data *per_cu; | |
5819 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5820 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5821 | nullptr); |
3b00ef10 | 5822 | return true; |
976ca316 | 5823 | }, per_objfile); |
3b00ef10 TT |
5824 | |
5825 | /* It's a shame we couldn't do this inside the | |
5826 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5827 | that have already been expanded. Instead, this loop matches what | |
5828 | the psymtab code does. */ | |
976ca316 | 5829 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5830 | { |
976ca316 | 5831 | compunit_symtab *symtab = per_objfile->get_symtab (per_cu); |
af758d11 | 5832 | if (symtab != nullptr) |
3b00ef10 TT |
5833 | { |
5834 | const struct block *block | |
af758d11 | 5835 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5836 | if (!iterate_over_symbols_terminated (block, name, |
5837 | domain, callback)) | |
5838 | break; | |
5839 | } | |
5840 | } | |
5841 | } | |
5842 | ||
927aa2e7 JK |
5843 | static void |
5844 | dw2_debug_names_expand_symtabs_matching | |
5845 | (struct objfile *objfile, | |
5846 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5847 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5848 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5849 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5850 | enum search_domain kind) | |
5851 | { | |
976ca316 | 5852 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 5853 | |
927aa2e7 | 5854 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 5855 | if (!per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5856 | return; |
9291a0cd | 5857 | |
976ca316 | 5858 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 5859 | |
c1a66c06 TV |
5860 | if (symbol_matcher == NULL && lookup_name == NULL) |
5861 | { | |
976ca316 | 5862 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5863 | { |
5864 | QUIT; | |
5865 | ||
976ca316 SM |
5866 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5867 | expansion_notify); | |
c1a66c06 TV |
5868 | } |
5869 | return; | |
5870 | } | |
5871 | ||
976ca316 | 5872 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5873 | |
c1a66c06 | 5874 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
5875 | symbol_matcher, |
5876 | kind, [&] (offset_type namei) | |
927aa2e7 | 5877 | { |
927aa2e7 JK |
5878 | /* The name was matched, now expand corresponding CUs that were |
5879 | marked. */ | |
976ca316 | 5880 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile); |
bbf2f4df | 5881 | |
927aa2e7 JK |
5882 | struct dwarf2_per_cu_data *per_cu; |
5883 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 SM |
5884 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5885 | expansion_notify); | |
3b00ef10 | 5886 | return true; |
976ca316 | 5887 | }, per_objfile); |
9291a0cd TT |
5888 | } |
5889 | ||
927aa2e7 | 5890 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5891 | { |
5892 | dw2_has_symbols, | |
5893 | dw2_find_last_source_symtab, | |
5894 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5895 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5896 | dw2_debug_names_lookup_symbol, |
d3214198 | 5897 | NULL, |
9291a0cd | 5898 | dw2_print_stats, |
927aa2e7 | 5899 | dw2_debug_names_dump, |
927aa2e7 | 5900 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5901 | dw2_expand_all_symtabs, |
652a8996 | 5902 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5903 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5904 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5905 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5906 | NULL, |
9291a0cd TT |
5907 | dw2_map_symbol_filenames |
5908 | }; | |
5909 | ||
4485a1c1 | 5910 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5911 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5912 | |
5913 | template <typename T> | |
5914 | static gdb::array_view<const gdb_byte> | |
5915 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5916 | { | |
5917 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5918 | ||
96b79293 | 5919 | if (section->empty ()) |
4485a1c1 SM |
5920 | return {}; |
5921 | ||
5922 | /* Older elfutils strip versions could keep the section in the main | |
5923 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5924 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5925 | return {}; |
5926 | ||
96b79293 | 5927 | section->read (obj); |
4485a1c1 | 5928 | |
8bebfcda PA |
5929 | /* dwarf2_section_info::size is a bfd_size_type, while |
5930 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5931 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5932 | is 32-bit. So we need an explicit narrowing conversion here. | |
5933 | This is fine, because it's impossible to allocate or mmap an | |
5934 | array/buffer larger than what size_t can represent. */ | |
5935 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5936 | } |
5937 | ||
87d6a7aa SM |
5938 | /* Lookup the index cache for the contents of the index associated to |
5939 | DWARF2_OBJ. */ | |
5940 | ||
5941 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5942 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5943 | { |
5944 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5945 | if (build_id == nullptr) | |
5946 | return {}; | |
5947 | ||
5948 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5949 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5950 | } |
5951 | ||
5952 | /* Same as the above, but for DWZ. */ | |
5953 | ||
5954 | static gdb::array_view<const gdb_byte> | |
5955 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5956 | { | |
5957 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5958 | if (build_id == nullptr) | |
5959 | return {}; | |
5960 | ||
5961 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5962 | } | |
5963 | ||
3c0aa29a | 5964 | /* See symfile.h. */ |
9291a0cd | 5965 | |
3c0aa29a PA |
5966 | bool |
5967 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5968 | { |
976ca316 SM |
5969 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
5970 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 5971 | |
9291a0cd TT |
5972 | /* If we're about to read full symbols, don't bother with the |
5973 | indices. In this case we also don't care if some other debug | |
5974 | format is making psymtabs, because they are all about to be | |
5975 | expanded anyway. */ | |
5976 | if ((objfile->flags & OBJF_READNOW)) | |
5977 | { | |
17ee85fc TT |
5978 | /* When using READNOW, the using_index flag (set below) indicates that |
5979 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
5980 | if (per_bfd->using_index) | |
5981 | { | |
5982 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 5983 | per_objfile->resize_symtabs (); |
17ee85fc TT |
5984 | return true; |
5985 | } | |
5986 | ||
5987 | per_bfd->using_index = 1; | |
976ca316 SM |
5988 | create_all_comp_units (per_objfile); |
5989 | create_all_type_units (per_objfile); | |
17ee85fc TT |
5990 | per_bfd->quick_file_names_table |
5991 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 5992 | per_objfile->resize_symtabs (); |
9291a0cd | 5993 | |
17ee85fc TT |
5994 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
5995 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 5996 | { |
17ee85fc | 5997 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 5998 | |
17ee85fc | 5999 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 6000 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
6001 | } |
6002 | ||
6003 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6004 | these functions will be no-ops because we will have expanded | |
6005 | all symtabs. */ | |
3c0aa29a PA |
6006 | *index_kind = dw_index_kind::GDB_INDEX; |
6007 | return true; | |
9291a0cd TT |
6008 | } |
6009 | ||
17ee85fc TT |
6010 | /* Was a debug names index already read when we processed an objfile sharing |
6011 | PER_BFD? */ | |
6012 | if (per_bfd->debug_names_table != nullptr) | |
6013 | { | |
6014 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
f8c41851 | 6015 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6016 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6017 | return true; |
6018 | } | |
6019 | ||
6020 | /* Was a GDB index already read when we processed an objfile sharing | |
6021 | PER_BFD? */ | |
6022 | if (per_bfd->index_table != nullptr) | |
6023 | { | |
6024 | *index_kind = dw_index_kind::GDB_INDEX; | |
f8c41851 | 6025 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6026 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6027 | return true; |
6028 | } | |
6029 | ||
976ca316 | 6030 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a PA |
6031 | { |
6032 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
976ca316 | 6033 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6034 | return true; |
6035 | } | |
927aa2e7 | 6036 | |
976ca316 | 6037 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 6038 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 6039 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
6040 | { |
6041 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6042 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6043 | return true; |
6044 | } | |
9291a0cd | 6045 | |
87d6a7aa | 6046 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 6047 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
6048 | get_gdb_index_contents_from_cache, |
6049 | get_gdb_index_contents_from_cache_dwz)) | |
6050 | { | |
6051 | global_index_cache.hit (); | |
6052 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6053 | per_objfile->resize_symtabs (); |
87d6a7aa SM |
6054 | return true; |
6055 | } | |
6056 | ||
6057 | global_index_cache.miss (); | |
3c0aa29a | 6058 | return false; |
9291a0cd TT |
6059 | } |
6060 | ||
6061 | \f | |
6062 | ||
dce234bc PP |
6063 | /* Build a partial symbol table. */ |
6064 | ||
6065 | void | |
f29dff0a | 6066 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6067 | { |
976ca316 SM |
6068 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6069 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
6070 | |
6071 | if (per_bfd->partial_symtabs != nullptr) | |
6072 | { | |
6073 | /* Partial symbols were already read, so now we can simply | |
6074 | attach them. */ | |
6075 | objfile->partial_symtabs = per_bfd->partial_symtabs; | |
976ca316 | 6076 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6077 | return; |
6078 | } | |
c9bf0622 | 6079 | |
6eee24ce | 6080 | init_psymbol_list (objfile, 1024); |
c906108c | 6081 | |
a70b8144 | 6082 | try |
c9bf0622 TT |
6083 | { |
6084 | /* This isn't really ideal: all the data we allocate on the | |
6085 | objfile's obstack is still uselessly kept around. However, | |
6086 | freeing it seems unsafe. */ | |
906768f9 | 6087 | psymtab_discarder psymtabs (objfile); |
976ca316 | 6088 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 6089 | psymtabs.keep (); |
87d6a7aa | 6090 | |
976ca316 | 6091 | per_objfile->resize_symtabs (); |
af758d11 | 6092 | |
87d6a7aa | 6093 | /* (maybe) store an index in the cache. */ |
976ca316 | 6094 | global_index_cache.store (per_objfile); |
c9bf0622 | 6095 | } |
230d2906 | 6096 | catch (const gdb_exception_error &except) |
492d29ea PA |
6097 | { |
6098 | exception_print (gdb_stderr, except); | |
6099 | } | |
17ee85fc TT |
6100 | |
6101 | /* Finish by setting the local reference to partial symtabs, so that | |
6102 | we don't try to read them again if reading another objfile with the same | |
6103 | BFD. If we can't in fact share, this won't make a difference anyway as | |
6104 | the dwarf2_per_bfd object won't be shared. */ | |
6105 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
c906108c | 6106 | } |
c906108c | 6107 | |
3b80fe9b DE |
6108 | /* Find the base address of the compilation unit for range lists and |
6109 | location lists. It will normally be specified by DW_AT_low_pc. | |
6110 | In DWARF-3 draft 4, the base address could be overridden by | |
6111 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6112 | compilation units with discontinuous ranges. */ | |
6113 | ||
6114 | static void | |
6115 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6116 | { | |
6117 | struct attribute *attr; | |
6118 | ||
2b24b6e4 | 6119 | cu->base_address.reset (); |
3b80fe9b DE |
6120 | |
6121 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6122 | if (attr != nullptr) |
2b24b6e4 | 6123 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6124 | else |
6125 | { | |
6126 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6127 | if (attr != nullptr) |
2b24b6e4 | 6128 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6129 | } |
6130 | } | |
6131 | ||
36586728 TT |
6132 | /* Helper function that returns the proper abbrev section for |
6133 | THIS_CU. */ | |
6134 | ||
6135 | static struct dwarf2_section_info * | |
6136 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6137 | { | |
6138 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6139 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6140 | |
6141 | if (this_cu->is_dwz) | |
c3699833 | 6142 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6143 | else |
c3699833 | 6144 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6145 | |
6146 | return abbrev; | |
6147 | } | |
6148 | ||
f4dc4d17 DE |
6149 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6150 | ||
6151 | static sect_offset | |
976ca316 | 6152 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6153 | struct dwarf2_section_info *section, |
9c541725 | 6154 | sect_offset sect_off) |
f4dc4d17 | 6155 | { |
96b79293 | 6156 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6157 | const gdb_byte *info_ptr; |
ac298888 | 6158 | unsigned int initial_length_size, offset_size; |
43988095 | 6159 | uint16_t version; |
f4dc4d17 | 6160 | |
976ca316 | 6161 | section->read (per_objfile->objfile); |
9c541725 | 6162 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6163 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6164 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6165 | info_ptr += initial_length_size; |
6166 | ||
6167 | version = read_2_bytes (abfd, info_ptr); | |
6168 | info_ptr += 2; | |
6169 | if (version >= 5) | |
6170 | { | |
6171 | /* Skip unit type and address size. */ | |
6172 | info_ptr += 2; | |
6173 | } | |
6174 | ||
24aa364d | 6175 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6176 | } |
6177 | ||
b83470bf TT |
6178 | /* A partial symtab that is used only for include files. */ |
6179 | struct dwarf2_include_psymtab : public partial_symtab | |
6180 | { | |
6181 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6182 | : partial_symtab (filename, objfile) | |
6183 | { | |
6184 | } | |
6185 | ||
6186 | void read_symtab (struct objfile *objfile) override | |
6187 | { | |
194d088f TV |
6188 | /* It's an include file, no symbols to read for it. |
6189 | Everything is in the includer symtab. */ | |
6190 | ||
6191 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6192 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6193 | model the includer. But if we go the regular route of calling | |
6194 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6195 | to expand the includer, we'll only use expand_psymtab on the includer | |
6196 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6197 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6198 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6199 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6200 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6201 | } |
6202 | ||
6203 | void expand_psymtab (struct objfile *objfile) override | |
6204 | { | |
194d088f TV |
6205 | /* This is not called by read_symtab, and should not be called by any |
6206 | expand_dependencies. */ | |
6207 | gdb_assert (false); | |
b83470bf TT |
6208 | } |
6209 | ||
5717c425 | 6210 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6211 | { |
5717c425 | 6212 | return includer ()->readin_p (objfile); |
b83470bf TT |
6213 | } |
6214 | ||
5717c425 | 6215 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6216 | { |
6217 | return nullptr; | |
6218 | } | |
6219 | ||
6220 | private: | |
194d088f TV |
6221 | partial_symtab *includer () const |
6222 | { | |
6223 | /* An include psymtab has exactly one dependency: the psymtab that | |
6224 | includes it. */ | |
6225 | gdb_assert (this->number_of_dependencies == 1); | |
6226 | return this->dependencies[0]; | |
6227 | } | |
b83470bf TT |
6228 | }; |
6229 | ||
aaa75496 JB |
6230 | /* Allocate a new partial symtab for file named NAME and mark this new |
6231 | partial symtab as being an include of PST. */ | |
6232 | ||
6233 | static void | |
891813be | 6234 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6235 | struct objfile *objfile) |
6236 | { | |
b83470bf | 6237 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6238 | |
fbd9ab74 | 6239 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6240 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6241 | |
a9342b62 | 6242 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6243 | subpst->dependencies[0] = pst; |
6244 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6245 | } |
6246 | ||
6247 | /* Read the Line Number Program data and extract the list of files | |
6248 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6249 | partial symtab for each of these included files. */ |
aaa75496 JB |
6250 | |
6251 | static void | |
6252 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6253 | struct die_info *die, |
891813be | 6254 | dwarf2_psymtab *pst) |
aaa75496 | 6255 | { |
fff8551c | 6256 | line_header_up lh; |
d85a05f0 | 6257 | struct attribute *attr; |
aaa75496 | 6258 | |
d85a05f0 | 6259 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6260 | if (attr != nullptr) |
9c541725 | 6261 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6262 | if (lh == NULL) |
6263 | return; /* No linetable, so no includes. */ | |
6264 | ||
79748972 TT |
6265 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6266 | that we pass in the raw text_low here; that is ok because we're | |
6267 | only decoding the line table to make include partial symtabs, and | |
6268 | so the addresses aren't really used. */ | |
4ae976d1 | 6269 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6270 | pst->raw_text_low (), 1); |
aaa75496 JB |
6271 | } |
6272 | ||
348e048f | 6273 | static hashval_t |
52dc124a | 6274 | hash_signatured_type (const void *item) |
348e048f | 6275 | { |
9a3c8263 SM |
6276 | const struct signatured_type *sig_type |
6277 | = (const struct signatured_type *) item; | |
9a619af0 | 6278 | |
348e048f | 6279 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6280 | return sig_type->signature; |
348e048f DE |
6281 | } |
6282 | ||
6283 | static int | |
52dc124a | 6284 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6285 | { |
9a3c8263 SM |
6286 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6287 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6288 | |
348e048f DE |
6289 | return lhs->signature == rhs->signature; |
6290 | } | |
6291 | ||
1fd400ff TT |
6292 | /* Allocate a hash table for signatured types. */ |
6293 | ||
b0b6a987 | 6294 | static htab_up |
298e9637 | 6295 | allocate_signatured_type_table () |
1fd400ff | 6296 | { |
b0b6a987 TT |
6297 | return htab_up (htab_create_alloc (41, |
6298 | hash_signatured_type, | |
6299 | eq_signatured_type, | |
6300 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6301 | } |
6302 | ||
d467dd73 | 6303 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6304 | |
6305 | static int | |
d467dd73 | 6306 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6307 | { |
9a3c8263 | 6308 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6309 | std::vector<signatured_type *> *all_type_units |
6310 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6311 | |
b2bdb8cf | 6312 | all_type_units->push_back (sigt); |
1fd400ff TT |
6313 | |
6314 | return 1; | |
6315 | } | |
6316 | ||
78d4d2c5 | 6317 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6318 | and fill them into TYPES_HTAB. It will process only type units, |
6319 | therefore DW_UT_type. */ | |
c88ee1f0 | 6320 | |
78d4d2c5 | 6321 | static void |
976ca316 | 6322 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6323 | struct dwo_file *dwo_file, |
b0b6a987 | 6324 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6325 | rcuh_kind section_kind) |
348e048f | 6326 | { |
976ca316 | 6327 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6328 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6329 | bfd *abfd; |
6330 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6331 | |
4bdcc0c1 DE |
6332 | abbrev_section = (dwo_file != NULL |
6333 | ? &dwo_file->sections.abbrev | |
976ca316 | 6334 | : &per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6335 | |
b4f54984 | 6336 | if (dwarf_read_debug) |
43988095 | 6337 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6338 | section->get_name (), |
6339 | abbrev_section->get_file_name ()); | |
09406207 | 6340 | |
96b79293 | 6341 | section->read (objfile); |
78d4d2c5 | 6342 | info_ptr = section->buffer; |
348e048f | 6343 | |
78d4d2c5 JK |
6344 | if (info_ptr == NULL) |
6345 | return; | |
348e048f | 6346 | |
78d4d2c5 JK |
6347 | /* We can't set abfd until now because the section may be empty or |
6348 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6349 | abfd = section->get_bfd_owner (); |
348e048f | 6350 | |
c0ab21c2 TT |
6351 | /* We don't use cutu_reader here because we don't need to read |
6352 | any dies: the signature is in the header. */ | |
3019eac3 | 6353 | |
78d4d2c5 JK |
6354 | end_ptr = info_ptr + section->size; |
6355 | while (info_ptr < end_ptr) | |
6356 | { | |
78d4d2c5 JK |
6357 | struct signatured_type *sig_type; |
6358 | struct dwo_unit *dwo_tu; | |
6359 | void **slot; | |
6360 | const gdb_byte *ptr = info_ptr; | |
6361 | struct comp_unit_head header; | |
6362 | unsigned int length; | |
8b70b953 | 6363 | |
9c541725 | 6364 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6365 | |
a49dd8dd JK |
6366 | /* Initialize it due to a false compiler warning. */ |
6367 | header.signature = -1; | |
9c541725 | 6368 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6369 | |
78d4d2c5 JK |
6370 | /* We need to read the type's signature in order to build the hash |
6371 | table, but we don't need anything else just yet. */ | |
348e048f | 6372 | |
976ca316 | 6373 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6374 | abbrev_section, ptr, section_kind); |
348e048f | 6375 | |
4057dfde | 6376 | length = header.get_length (); |
6caca83c | 6377 | |
78d4d2c5 JK |
6378 | /* Skip dummy type units. */ |
6379 | if (ptr >= info_ptr + length | |
43988095 JK |
6380 | || peek_abbrev_code (abfd, ptr) == 0 |
6381 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6382 | { |
6383 | info_ptr += length; | |
6384 | continue; | |
6385 | } | |
dee91e82 | 6386 | |
78d4d2c5 JK |
6387 | if (types_htab == NULL) |
6388 | { | |
6389 | if (dwo_file) | |
298e9637 | 6390 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6391 | else |
298e9637 | 6392 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6393 | } |
8b70b953 | 6394 | |
78d4d2c5 JK |
6395 | if (dwo_file) |
6396 | { | |
6397 | sig_type = NULL; | |
976ca316 | 6398 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
78d4d2c5 | 6399 | dwo_tu->dwo_file = dwo_file; |
43988095 | 6400 | dwo_tu->signature = header.signature; |
9c541725 | 6401 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6402 | dwo_tu->section = section; |
9c541725 | 6403 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6404 | dwo_tu->length = length; |
6405 | } | |
6406 | else | |
6407 | { | |
6408 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6409 | The real type_offset is in the DWO file. */ | |
6410 | dwo_tu = NULL; | |
976ca316 | 6411 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6412 | sig_type->signature = header.signature; |
9c541725 | 6413 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6414 | sig_type->per_cu.is_debug_types = 1; |
6415 | sig_type->per_cu.section = section; | |
9c541725 | 6416 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6417 | sig_type->per_cu.length = length; |
6418 | } | |
6419 | ||
b0b6a987 | 6420 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6421 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6422 | INSERT); | |
6423 | gdb_assert (slot != NULL); | |
6424 | if (*slot != NULL) | |
6425 | { | |
9c541725 | 6426 | sect_offset dup_sect_off; |
0349ea22 | 6427 | |
3019eac3 DE |
6428 | if (dwo_file) |
6429 | { | |
78d4d2c5 JK |
6430 | const struct dwo_unit *dup_tu |
6431 | = (const struct dwo_unit *) *slot; | |
6432 | ||
9c541725 | 6433 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6434 | } |
6435 | else | |
6436 | { | |
78d4d2c5 JK |
6437 | const struct signatured_type *dup_tu |
6438 | = (const struct signatured_type *) *slot; | |
6439 | ||
9c541725 | 6440 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6441 | } |
8b70b953 | 6442 | |
b98664d3 | 6443 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6444 | " the entry at offset %s, signature %s"), |
6445 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6446 | hex_string (header.signature)); |
78d4d2c5 JK |
6447 | } |
6448 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6449 | |
78d4d2c5 | 6450 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6451 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6452 | sect_offset_str (sect_off), | |
43988095 | 6453 | hex_string (header.signature)); |
3019eac3 | 6454 | |
78d4d2c5 JK |
6455 | info_ptr += length; |
6456 | } | |
6457 | } | |
3019eac3 | 6458 | |
78d4d2c5 JK |
6459 | /* Create the hash table of all entries in the .debug_types |
6460 | (or .debug_types.dwo) section(s). | |
6461 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6462 | otherwise it is NULL. | |
b3c8eb43 | 6463 | |
78d4d2c5 | 6464 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6465 | |
78d4d2c5 | 6466 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6467 | |
78d4d2c5 | 6468 | static void |
976ca316 | 6469 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6470 | struct dwo_file *dwo_file, |
fd5866f6 | 6471 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6472 | htab_up &types_htab) |
78d4d2c5 | 6473 | { |
fd5866f6 | 6474 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6475 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6476 | rcuh_kind::TYPE); | |
3019eac3 DE |
6477 | } |
6478 | ||
6479 | /* Create the hash table of all entries in the .debug_types section, | |
6480 | and initialize all_type_units. | |
6481 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6482 | otherwise non-zero. */ | |
6483 | ||
6484 | static int | |
976ca316 | 6485 | create_all_type_units (dwarf2_per_objfile *per_objfile) |
3019eac3 | 6486 | { |
b0b6a987 | 6487 | htab_up types_htab; |
3019eac3 | 6488 | |
976ca316 SM |
6489 | create_debug_type_hash_table (per_objfile, NULL, &per_objfile->per_bfd->info, |
6490 | types_htab, rcuh_kind::COMPILE); | |
6491 | create_debug_types_hash_table (per_objfile, NULL, per_objfile->per_bfd->types, | |
6492 | types_htab); | |
3019eac3 DE |
6493 | if (types_htab == NULL) |
6494 | { | |
976ca316 | 6495 | per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6496 | return 0; |
6497 | } | |
6498 | ||
976ca316 | 6499 | per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6500 | |
976ca316 SM |
6501 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
6502 | per_objfile->per_bfd->all_type_units.reserve | |
6503 | (htab_elements (per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6504 | |
976ca316 | 6505 | htab_traverse_noresize (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6506 | add_signatured_type_cu_to_table, |
976ca316 | 6507 | &per_objfile->per_bfd->all_type_units); |
1fd400ff | 6508 | |
348e048f DE |
6509 | return 1; |
6510 | } | |
6511 | ||
5989a64e | 6512 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6513 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6514 | Otherwise we find one. */ | |
6515 | ||
6516 | static struct signatured_type * | |
976ca316 | 6517 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6518 | { |
976ca316 SM |
6519 | if (per_objfile->per_bfd->all_type_units.size () |
6520 | == per_objfile->per_bfd->all_type_units.capacity ()) | |
6521 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6522 | |
976ca316 | 6523 | signatured_type *sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6524 | |
976ca316 | 6525 | per_objfile->resize_symtabs (); |
af758d11 | 6526 | |
976ca316 | 6527 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6528 | sig_type->signature = sig; |
6529 | sig_type->per_cu.is_debug_types = 1; | |
976ca316 | 6530 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6531 | { |
6532 | sig_type->per_cu.v.quick = | |
976ca316 | 6533 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6534 | struct dwarf2_per_cu_quick_data); |
6535 | } | |
6536 | ||
6537 | if (slot == NULL) | |
6538 | { | |
976ca316 | 6539 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6540 | sig_type, INSERT); |
6541 | } | |
6542 | gdb_assert (*slot == NULL); | |
6543 | *slot = sig_type; | |
6544 | /* The rest of sig_type must be filled in by the caller. */ | |
6545 | return sig_type; | |
6546 | } | |
6547 | ||
a2ce51a0 DE |
6548 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6549 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6550 | ||
6551 | static void | |
976ca316 | 6552 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6553 | struct signatured_type *sig_entry, |
6554 | struct dwo_unit *dwo_entry) | |
6555 | { | |
976ca316 | 6556 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6557 | |
7ee85ab1 | 6558 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6559 | gdb_assert (! sig_entry->per_cu.queued); |
976ca316 | 6560 | gdb_assert (per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6561 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6562 | { |
6563 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
976ca316 | 6564 | gdb_assert (!per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6565 | } |
6566 | else | |
6567 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6568 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6569 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6570 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6571 | gdb_assert (sig_entry->dwo_unit == NULL); |
6572 | ||
6573 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6574 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6575 | sig_entry->per_cu.length = dwo_entry->length; |
6576 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6577 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6578 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6579 | sig_entry->dwo_unit = dwo_entry; | |
6580 | } | |
6581 | ||
6582 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6583 | If we haven't read the TU yet, create the signatured_type data structure |
6584 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6585 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6586 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6587 | containing that CU. Otherwise we could end up reading several other DWO | |
6588 | files (due to comdat folding) to process the transitive closure of all the | |
6589 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6590 | type signature that it needs. | |
a2ce51a0 DE |
6591 | We only do this for .gdb_index because in the psymtab case we already have |
6592 | to read all the DWOs to build the type unit groups. */ | |
6593 | ||
6594 | static struct signatured_type * | |
6595 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6596 | { | |
976ca316 | 6597 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6598 | struct dwo_file *dwo_file; |
6599 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6600 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6601 | void **slot; |
a2ce51a0 | 6602 | |
976ca316 | 6603 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6604 | |
6aa5f3a6 DE |
6605 | /* If TU skeletons have been removed then we may not have read in any |
6606 | TUs yet. */ | |
976ca316 SM |
6607 | if (per_objfile->per_bfd->signatured_types == NULL) |
6608 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6609 | |
6610 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6611 | Use the global signatured_types array to do our own comdat-folding |
6612 | of types. If this is the first time we're reading this TU, and | |
6613 | the TU has an entry in .gdb_index, replace the recorded data from | |
6614 | .gdb_index with this TU. */ | |
a2ce51a0 | 6615 | |
a2ce51a0 | 6616 | find_sig_entry.signature = sig; |
976ca316 | 6617 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6618 | &find_sig_entry, INSERT); |
9a3c8263 | 6619 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6620 | |
6621 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6622 | read. Don't reassign the global entry to point to this DWO if that's |
6623 | the case. Also note that if the TU is already being read, it may not | |
6624 | have come from a DWO, the program may be a mix of Fission-compiled | |
6625 | code and non-Fission-compiled code. */ | |
6626 | ||
6627 | /* Have we already tried to read this TU? | |
6628 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6629 | needn't exist in the global table yet). */ | |
6630 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6631 | return sig_entry; |
6632 | ||
6aa5f3a6 DE |
6633 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6634 | dwo_unit of the TU itself. */ | |
6635 | dwo_file = cu->dwo_unit->dwo_file; | |
6636 | ||
a2ce51a0 DE |
6637 | /* Ok, this is the first time we're reading this TU. */ |
6638 | if (dwo_file->tus == NULL) | |
6639 | return NULL; | |
6640 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6641 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6642 | &find_dwo_entry); | |
a2ce51a0 DE |
6643 | if (dwo_entry == NULL) |
6644 | return NULL; | |
6645 | ||
6aa5f3a6 DE |
6646 | /* If the global table doesn't have an entry for this TU, add one. */ |
6647 | if (sig_entry == NULL) | |
976ca316 | 6648 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6649 | |
976ca316 | 6650 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6651 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6652 | return sig_entry; |
6653 | } | |
6654 | ||
a2ce51a0 DE |
6655 | /* Subroutine of lookup_signatured_type. |
6656 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6657 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6658 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6659 | |
6660 | static struct signatured_type * | |
6661 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6662 | { | |
976ca316 SM |
6663 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6664 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6665 | struct dwo_unit *dwo_entry; |
6666 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6667 | void **slot; |
a2ce51a0 | 6668 | |
976ca316 | 6669 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6670 | gdb_assert (dwp_file != NULL); |
6671 | ||
6aa5f3a6 DE |
6672 | /* If TU skeletons have been removed then we may not have read in any |
6673 | TUs yet. */ | |
976ca316 SM |
6674 | if (per_objfile->per_bfd->signatured_types == NULL) |
6675 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6676 | |
6aa5f3a6 | 6677 | find_sig_entry.signature = sig; |
976ca316 | 6678 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6679 | &find_sig_entry, INSERT); |
9a3c8263 | 6680 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6681 | |
6682 | /* Have we already tried to read this TU? | |
6683 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6684 | needn't exist in the global table yet). */ | |
6685 | if (sig_entry != NULL) | |
6686 | return sig_entry; | |
6687 | ||
a2ce51a0 DE |
6688 | if (dwp_file->tus == NULL) |
6689 | return NULL; | |
976ca316 SM |
6690 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6691 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6692 | if (dwo_entry == NULL) |
6693 | return NULL; | |
6694 | ||
976ca316 SM |
6695 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6696 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6697 | |
a2ce51a0 DE |
6698 | return sig_entry; |
6699 | } | |
6700 | ||
380bca97 | 6701 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6702 | Returns NULL if signature SIG is not present in the table. |
6703 | It is up to the caller to complain about this. */ | |
348e048f DE |
6704 | |
6705 | static struct signatured_type * | |
a2ce51a0 | 6706 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6707 | { |
976ca316 | 6708 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6709 | |
976ca316 | 6710 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6711 | { |
6712 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6713 | These cases require special processing. */ | |
976ca316 | 6714 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6715 | return lookup_dwo_signatured_type (cu, sig); |
6716 | else | |
6717 | return lookup_dwp_signatured_type (cu, sig); | |
6718 | } | |
6719 | else | |
6720 | { | |
6721 | struct signatured_type find_entry, *entry; | |
348e048f | 6722 | |
976ca316 | 6723 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6724 | return NULL; |
6725 | find_entry.signature = sig; | |
9a3c8263 | 6726 | entry = ((struct signatured_type *) |
976ca316 | 6727 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6728 | &find_entry)); |
a2ce51a0 DE |
6729 | return entry; |
6730 | } | |
348e048f | 6731 | } |
18a8505e | 6732 | |
42e7ad6c | 6733 | /* Low level DIE reading support. */ |
348e048f | 6734 | |
d85a05f0 DJ |
6735 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6736 | ||
6737 | static void | |
6738 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6739 | struct dwarf2_cu *cu, |
3019eac3 | 6740 | struct dwarf2_section_info *section, |
685af9cd TT |
6741 | struct dwo_file *dwo_file, |
6742 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6743 | { |
fceca515 | 6744 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6745 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6746 | reader->cu = cu; |
3019eac3 | 6747 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6748 | reader->die_section = section; |
6749 | reader->buffer = section->buffer; | |
f664829e | 6750 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6751 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6752 | } |
6753 | ||
c0ab21c2 | 6754 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6755 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6756 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6757 | already. |
6758 | ||
6759 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6760 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6761 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6762 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6763 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6764 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6765 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6766 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6767 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6768 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6769 | kept around for at least as long as *RESULT_READER. | |
6770 | ||
b0c7bfa9 DE |
6771 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6772 | ||
6773 | static int | |
4ab09049 | 6774 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6775 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6776 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6777 | const char *stub_comp_dir, |
b0c7bfa9 | 6778 | struct die_reader_specs *result_reader, |
d521ce57 | 6779 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6780 | struct die_info **result_comp_unit_die, |
685af9cd | 6781 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6782 | { |
976ca316 | 6783 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6784 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6785 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6786 | bfd *abfd; |
d521ce57 | 6787 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6788 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6789 | int i,num_extra_attrs; | |
6790 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6791 | struct die_info *comp_unit_die; |
6792 | ||
b0aeadb3 DE |
6793 | /* At most one of these may be provided. */ |
6794 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6795 | |
b0c7bfa9 DE |
6796 | /* These attributes aren't processed until later: |
6797 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6798 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6799 | referenced later. However, these attributes are found in the stub | |
6800 | which we won't have later. In order to not impose this complication | |
6801 | on the rest of the code, we read them here and copy them to the | |
6802 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6803 | |
6804 | stmt_list = NULL; | |
6805 | low_pc = NULL; | |
6806 | high_pc = NULL; | |
6807 | ranges = NULL; | |
6808 | comp_dir = NULL; | |
6809 | ||
6810 | if (stub_comp_unit_die != NULL) | |
6811 | { | |
6812 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6813 | DWO file. */ | |
4ab09049 | 6814 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6815 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6816 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6817 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6818 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6819 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6820 | ||
a39fdb41 | 6821 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6822 | |
18a8505e AT |
6823 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6824 | here (if needed). We need the value before we can process | |
6825 | DW_AT_ranges. */ | |
a39fdb41 | 6826 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6827 | } |
a2ce51a0 DE |
6828 | else if (stub_comp_dir != NULL) |
6829 | { | |
6830 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6831 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6832 | comp_dir->name = DW_AT_comp_dir; |
6833 | comp_dir->form = DW_FORM_string; | |
6834 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6835 | DW_STRING (comp_dir) = stub_comp_dir; | |
6836 | } | |
b0c7bfa9 DE |
6837 | |
6838 | /* Set up for reading the DWO CU/TU. */ | |
6839 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6840 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6841 | section->read (objfile); |
6842 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6843 | begin_info_ptr = info_ptr = (section->buffer |
6844 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6845 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6846 | |
4ab09049 | 6847 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6848 | { |
4ab09049 | 6849 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6850 | |
976ca316 SM |
6851 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6852 | section, dwo_abbrev_section, | |
43988095 | 6853 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6854 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6855 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6856 | { |
6857 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6858 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6859 | hex_string (sig_type->signature), |
43988095 | 6860 | hex_string (cu->header.signature), |
9d8780f0 | 6861 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6862 | bfd_get_filename (abfd)); |
6863 | } | |
9c541725 | 6864 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6865 | /* For DWOs coming from DWP files, we don't know the CU length |
6866 | nor the type's offset in the TU until now. */ | |
4057dfde | 6867 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6868 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6869 | |
6870 | /* Establish the type offset that can be used to lookup the type. | |
6871 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6872 | sig_type->type_offset_in_section |
6873 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6874 | } |
6875 | else | |
6876 | { | |
976ca316 SM |
6877 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6878 | section, dwo_abbrev_section, | |
43988095 | 6879 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6880 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6881 | /* For DWOs coming from DWP files, we don't know the CU length |
6882 | until now. */ | |
4057dfde | 6883 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6884 | } |
6885 | ||
685af9cd | 6886 | *result_dwo_abbrev_table |
86de1d91 TT |
6887 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6888 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6889 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6890 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6891 | |
6892 | /* Read in the die, but leave space to copy over the attributes | |
6893 | from the stub. This has the benefit of simplifying the rest of | |
6894 | the code - all the work to maintain the illusion of a single | |
6895 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6896 | num_extra_attrs = ((stmt_list != NULL) | |
6897 | + (low_pc != NULL) | |
6898 | + (high_pc != NULL) | |
6899 | + (ranges != NULL) | |
6900 | + (comp_dir != NULL)); | |
6901 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6902 | num_extra_attrs); |
b0c7bfa9 DE |
6903 | |
6904 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6905 | comp_unit_die = *result_comp_unit_die; | |
6906 | i = comp_unit_die->num_attrs; | |
6907 | if (stmt_list != NULL) | |
6908 | comp_unit_die->attrs[i++] = *stmt_list; | |
6909 | if (low_pc != NULL) | |
6910 | comp_unit_die->attrs[i++] = *low_pc; | |
6911 | if (high_pc != NULL) | |
6912 | comp_unit_die->attrs[i++] = *high_pc; | |
6913 | if (ranges != NULL) | |
6914 | comp_unit_die->attrs[i++] = *ranges; | |
6915 | if (comp_dir != NULL) | |
6916 | comp_unit_die->attrs[i++] = *comp_dir; | |
6917 | comp_unit_die->num_attrs += num_extra_attrs; | |
6918 | ||
b4f54984 | 6919 | if (dwarf_die_debug) |
bf6af496 DE |
6920 | { |
6921 | fprintf_unfiltered (gdb_stdlog, | |
6922 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6923 | section->get_name (), |
bf6af496 DE |
6924 | (unsigned) (begin_info_ptr - section->buffer), |
6925 | bfd_get_filename (abfd)); | |
b4f54984 | 6926 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6927 | } |
6928 | ||
b0c7bfa9 DE |
6929 | /* Skip dummy compilation units. */ |
6930 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6931 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6932 | return 0; | |
6933 | ||
6934 | *result_info_ptr = info_ptr; | |
6935 | return 1; | |
6936 | } | |
6937 | ||
a084a2a6 AT |
6938 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6939 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6940 | signature is part of the header. */ | |
6941 | static gdb::optional<ULONGEST> | |
6942 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6943 | { | |
6944 | if (cu->header.version >= 5) | |
6945 | return cu->header.signature; | |
6946 | struct attribute *attr; | |
6947 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6948 | if (attr == nullptr) | |
6949 | return gdb::optional<ULONGEST> (); | |
6950 | return DW_UNSND (attr); | |
6951 | } | |
6952 | ||
c0ab21c2 | 6953 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6954 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6955 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6956 | |
6957 | static struct dwo_unit * | |
4ab09049 | 6958 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 6959 | { |
4ab09049 | 6960 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 6961 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6962 | const char *comp_dir; |
b0c7bfa9 | 6963 | |
a2ce51a0 DE |
6964 | gdb_assert (cu != NULL); |
6965 | ||
b0c7bfa9 | 6966 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6967 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6968 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 6969 | |
4ab09049 SM |
6970 | if (per_cu->is_debug_types) |
6971 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
6972 | else |
6973 | { | |
a084a2a6 | 6974 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 6975 | |
a084a2a6 | 6976 | if (!signature.has_value ()) |
b0c7bfa9 DE |
6977 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6978 | " [in module %s]"), | |
4ab09049 SM |
6979 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
6980 | ||
6981 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
6982 | } |
6983 | ||
b0c7bfa9 DE |
6984 | return dwo_unit; |
6985 | } | |
6986 | ||
c0ab21c2 | 6987 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6988 | See it for a description of the parameters. |
fcd3b13d | 6989 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6990 | |
c0ab21c2 | 6991 | void |
9e021579 SM |
6992 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
6993 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 6994 | dwarf2_cu *existing_cu) |
a2ce51a0 | 6995 | { |
a2ce51a0 | 6996 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6997 | |
6998 | /* Verify we can do the following downcast, and that we have the | |
6999 | data we need. */ | |
7000 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7001 | sig_type = (struct signatured_type *) this_cu; | |
7002 | gdb_assert (sig_type->dwo_unit != NULL); | |
7003 | ||
2e671100 SM |
7004 | dwarf2_cu *cu; |
7005 | ||
7006 | if (existing_cu != nullptr) | |
6aa5f3a6 | 7007 | { |
2e671100 SM |
7008 | cu = existing_cu; |
7009 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7010 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7011 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7012 | } |
7013 | else | |
7014 | { | |
7188ed02 SM |
7015 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
7016 | in per_objfile yet. */ | |
7017 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); | |
9e021579 | 7018 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 7019 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
7020 | } |
7021 | ||
7022 | /* A future optimization, if needed, would be to use an existing | |
7023 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7024 | could share abbrev tables. */ | |
a2ce51a0 | 7025 | |
2e671100 | 7026 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7027 | NULL /* stub_comp_unit_die */, |
7028 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 7029 | this, &info_ptr, |
3e225074 | 7030 | &comp_unit_die, |
c0ab21c2 | 7031 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7032 | { |
7033 | /* Dummy die. */ | |
c0ab21c2 | 7034 | dummy_p = true; |
a2ce51a0 | 7035 | } |
a2ce51a0 DE |
7036 | } |
7037 | ||
fd820528 | 7038 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7039 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7040 | |
f4dc4d17 DE |
7041 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7042 | Otherwise the table specified in the comp unit header is read in and used. | |
7043 | This is an optimization for when we already have the abbrev table. | |
7044 | ||
2e671100 SM |
7045 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
7046 | allocated. */ | |
aaa75496 | 7047 | |
ab432490 | 7048 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7049 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 7050 | struct abbrev_table *abbrev_table, |
2e671100 | 7051 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
7052 | bool skip_partial) |
7053 | : die_reader_specs {}, | |
6751ebae | 7054 | m_this_cu (this_cu) |
c906108c | 7055 | { |
976ca316 | 7056 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7057 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7058 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 7059 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7060 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7061 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7062 | /* Non-zero if CU currently points to a DWO file and we need to |
7063 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7064 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7065 | int rereading_dwo_cu = 0; |
c906108c | 7066 | |
b4f54984 | 7067 | if (dwarf_die_debug) |
9d8780f0 | 7068 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7069 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7070 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7071 | |
a2ce51a0 DE |
7072 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7073 | file (instead of going through the stub), short-circuit all of this. */ | |
7074 | if (this_cu->reading_dwo_directly) | |
7075 | { | |
7076 | /* Narrow down the scope of possibilities to have to understand. */ | |
7077 | gdb_assert (this_cu->is_debug_types); | |
7078 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 7079 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
7080 | return; |
7081 | } | |
7082 | ||
dee91e82 | 7083 | /* This is cheap if the section is already read in. */ |
96b79293 | 7084 | section->read (objfile); |
dee91e82 | 7085 | |
9c541725 | 7086 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7087 | |
7088 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7089 | |
2e671100 SM |
7090 | dwarf2_cu *cu; |
7091 | ||
7092 | if (existing_cu != nullptr) | |
dee91e82 | 7093 | { |
2e671100 | 7094 | cu = existing_cu; |
42e7ad6c DE |
7095 | /* If this CU is from a DWO file we need to start over, we need to |
7096 | refetch the attributes from the skeleton CU. | |
7097 | This could be optimized by retrieving those attributes from when we | |
7098 | were here the first time: the previous comp_unit_die was stored in | |
7099 | comp_unit_obstack. But there's no data yet that we need this | |
7100 | optimization. */ | |
7101 | if (cu->dwo_unit != NULL) | |
7102 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7103 | } |
7104 | else | |
7105 | { | |
7188ed02 SM |
7106 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
7107 | in per_objfile yet. */ | |
976ca316 SM |
7108 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
7109 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 7110 | cu = m_new_cu.get (); |
42e7ad6c | 7111 | } |
dee91e82 | 7112 | |
b0c7bfa9 | 7113 | /* Get the header. */ |
9c541725 | 7114 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7115 | { |
7116 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7117 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7118 | } |
7119 | else | |
7120 | { | |
3019eac3 | 7121 | if (this_cu->is_debug_types) |
dee91e82 | 7122 | { |
976ca316 SM |
7123 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7124 | section, abbrev_section, | |
7125 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 7126 | |
42e7ad6c DE |
7127 | /* Since per_cu is the first member of struct signatured_type, |
7128 | we can go from a pointer to one to a pointer to the other. */ | |
7129 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7130 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7131 | gdb_assert (sig_type->type_offset_in_tu |
7132 | == cu->header.type_cu_offset_in_tu); | |
7133 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7134 | |
42e7ad6c DE |
7135 | /* LENGTH has not been set yet for type units if we're |
7136 | using .gdb_index. */ | |
4057dfde | 7137 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7138 | |
7139 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7140 | sig_type->type_offset_in_section = |
7141 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7142 | |
7143 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7144 | } |
7145 | else | |
7146 | { | |
976ca316 SM |
7147 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7148 | section, abbrev_section, | |
43988095 JK |
7149 | info_ptr, |
7150 | rcuh_kind::COMPILE); | |
dee91e82 | 7151 | |
9c541725 | 7152 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7153 | if (this_cu->length == 0) |
7154 | this_cu->length = cu->header.get_length (); | |
7155 | else | |
7156 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7157 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7158 | } |
7159 | } | |
10b3939b | 7160 | |
6caca83c | 7161 | /* Skip dummy compilation units. */ |
dee91e82 | 7162 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7163 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7164 | { |
7165 | dummy_p = true; | |
7166 | return; | |
7167 | } | |
6caca83c | 7168 | |
433df2d4 DE |
7169 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7170 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7171 | done. */ |
f4dc4d17 | 7172 | if (abbrev_table != NULL) |
685af9cd TT |
7173 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7174 | else | |
f4dc4d17 | 7175 | { |
c0ab21c2 | 7176 | m_abbrev_table_holder |
86de1d91 TT |
7177 | = abbrev_table::read (objfile, abbrev_section, |
7178 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 7179 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7180 | } |
af703f96 | 7181 | |
dee91e82 | 7182 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7183 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7184 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7185 | |
58f0c718 | 7186 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7187 | { |
7188 | dummy_p = true; | |
7189 | return; | |
7190 | } | |
58f0c718 | 7191 | |
b0c7bfa9 | 7192 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7193 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7194 | table from the DWO file and pass the ownership over to us. It will be | |
7195 | referenced from READER, so we must make sure to free it after we're done | |
7196 | with READER. | |
7197 | ||
b0c7bfa9 DE |
7198 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7199 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7200 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7201 | if (dwo_name != nullptr) |
3019eac3 | 7202 | { |
3019eac3 | 7203 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7204 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7205 | |
3e225074 | 7206 | if (comp_unit_die->has_children) |
6a506a2d | 7207 | { |
b98664d3 | 7208 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7209 | " has children (offset %s) [in module %s]"), |
7210 | sect_offset_str (this_cu->sect_off), | |
7211 | bfd_get_filename (abfd)); | |
6a506a2d | 7212 | } |
4ab09049 | 7213 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7214 | if (dwo_unit != NULL) |
3019eac3 | 7215 | { |
4ab09049 | 7216 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7217 | comp_unit_die, NULL, |
c0ab21c2 | 7218 | this, &info_ptr, |
3e225074 | 7219 | &dwo_comp_unit_die, |
c0ab21c2 | 7220 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7221 | { |
7222 | /* Dummy die. */ | |
c0ab21c2 | 7223 | dummy_p = true; |
6a506a2d DE |
7224 | return; |
7225 | } | |
7226 | comp_unit_die = dwo_comp_unit_die; | |
7227 | } | |
7228 | else | |
7229 | { | |
7230 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7231 | the stub. A complaint has already been logged. There's | |
7232 | not much more we can do except pass on the stub DIE to | |
7233 | die_reader_func. We don't want to throw an error on bad | |
7234 | debug info. */ | |
3019eac3 DE |
7235 | } |
7236 | } | |
c0ab21c2 | 7237 | } |
3019eac3 | 7238 | |
6751ebae TT |
7239 | void |
7240 | cutu_reader::keep () | |
c0ab21c2 | 7241 | { |
b0c7bfa9 | 7242 | /* Done, clean up. */ |
6751ebae TT |
7243 | gdb_assert (!dummy_p); |
7244 | if (m_new_cu != NULL) | |
348e048f | 7245 | { |
7188ed02 SM |
7246 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
7247 | now. */ | |
7248 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; | |
7249 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7250 | } |
dee91e82 DE |
7251 | } |
7252 | ||
18a8505e AT |
7253 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7254 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7255 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7256 | |
7257 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7258 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7259 | |
7260 | We fill in THIS_CU->length. | |
7261 | ||
dee91e82 | 7262 | THIS_CU->cu is always freed when done. |
3019eac3 | 7263 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7264 | to care whether it refers to the "main" CU or the DWO CU. |
7265 | ||
7266 | When parent_cu is passed, it is used to provide a default value for | |
7267 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7268 | |
ab432490 | 7269 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7270 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
7271 | struct dwarf2_cu *parent_cu, |
7272 | struct dwo_file *dwo_file) | |
7273 | : die_reader_specs {}, | |
7274 | m_this_cu (this_cu) | |
dee91e82 | 7275 | { |
976ca316 | 7276 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7277 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7278 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7279 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7280 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7281 | |
b4f54984 | 7282 | if (dwarf_die_debug) |
9d8780f0 | 7283 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7284 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7285 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7286 | |
976ca316 | 7287 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7288 | |
33e80786 DE |
7289 | abbrev_section = (dwo_file != NULL |
7290 | ? &dwo_file->sections.abbrev | |
7291 | : get_abbrev_section_for_cu (this_cu)); | |
7292 | ||
dee91e82 | 7293 | /* This is cheap if the section is already read in. */ |
96b79293 | 7294 | section->read (objfile); |
dee91e82 | 7295 | |
976ca316 | 7296 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 7297 | |
9c541725 | 7298 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
7299 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
7300 | section, abbrev_section, info_ptr, | |
43988095 JK |
7301 | (this_cu->is_debug_types |
7302 | ? rcuh_kind::TYPE | |
7303 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7304 | |
18a8505e AT |
7305 | if (parent_cu != nullptr) |
7306 | { | |
c0ab21c2 TT |
7307 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7308 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7309 | } |
4057dfde | 7310 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7311 | |
7312 | /* Skip dummy compilation units. */ | |
7313 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7314 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7315 | { |
7316 | dummy_p = true; | |
7317 | return; | |
7318 | } | |
72bf9492 | 7319 | |
c0ab21c2 | 7320 | m_abbrev_table_holder |
86de1d91 TT |
7321 | = abbrev_table::read (objfile, abbrev_section, |
7322 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 7323 | |
c0ab21c2 TT |
7324 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7325 | m_abbrev_table_holder.get ()); | |
3e225074 | 7326 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7327 | } |
7328 | ||
0018ea6f DE |
7329 | \f |
7330 | /* Type Unit Groups. | |
dee91e82 | 7331 | |
0018ea6f DE |
7332 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7333 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7334 | so that all types coming from the same compilation (.o file) are grouped | |
7335 | together. A future step could be to put the types in the same symtab as | |
7336 | the CU the types ultimately came from. */ | |
ff013f42 | 7337 | |
f4dc4d17 DE |
7338 | static hashval_t |
7339 | hash_type_unit_group (const void *item) | |
7340 | { | |
9a3c8263 SM |
7341 | const struct type_unit_group *tu_group |
7342 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7343 | |
094b34ac | 7344 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7345 | } |
348e048f DE |
7346 | |
7347 | static int | |
f4dc4d17 | 7348 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7349 | { |
9a3c8263 SM |
7350 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7351 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7352 | |
094b34ac | 7353 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7354 | } |
348e048f | 7355 | |
f4dc4d17 DE |
7356 | /* Allocate a hash table for type unit groups. */ |
7357 | ||
eaa5fa8b | 7358 | static htab_up |
298e9637 | 7359 | allocate_type_unit_groups_table () |
f4dc4d17 | 7360 | { |
eaa5fa8b TT |
7361 | return htab_up (htab_create_alloc (3, |
7362 | hash_type_unit_group, | |
7363 | eq_type_unit_group, | |
7364 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7365 | } |
dee91e82 | 7366 | |
f4dc4d17 DE |
7367 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7368 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7369 | of any one psymtab grow too big. */ | |
7370 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7371 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7372 | |
094b34ac | 7373 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7374 | Create the type_unit_group object used to hold one or more TUs. */ |
7375 | ||
7376 | static struct type_unit_group * | |
094b34ac | 7377 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7378 | { |
976ca316 SM |
7379 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7380 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
094b34ac | 7381 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7382 | struct type_unit_group *tu_group; |
f4dc4d17 | 7383 | |
976ca316 | 7384 | tu_group = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, type_unit_group); |
094b34ac | 7385 | per_cu = &tu_group->per_cu; |
1859c670 | 7386 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7387 | |
1859c670 | 7388 | if (per_bfd->using_index) |
094b34ac | 7389 | { |
1859c670 | 7390 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7391 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7392 | } |
7393 | else | |
7394 | { | |
9c541725 | 7395 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7396 | dwarf2_psymtab *pst; |
528e1572 | 7397 | std::string name; |
094b34ac DE |
7398 | |
7399 | /* Give the symtab a useful name for debug purposes. */ | |
7400 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7401 | name = string_printf ("<type_units_%d>", |
7402 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7403 | else |
528e1572 | 7404 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7405 | |
976ca316 | 7406 | pst = create_partial_symtab (per_cu, per_objfile, name.c_str ()); |
6d94535f | 7407 | pst->anonymous = true; |
094b34ac | 7408 | } |
f4dc4d17 | 7409 | |
094b34ac | 7410 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7411 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7412 | |
7413 | return tu_group; | |
7414 | } | |
7415 | ||
094b34ac DE |
7416 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7417 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7418 | |
7419 | static struct type_unit_group * | |
ff39bb5e | 7420 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7421 | { |
976ca316 SM |
7422 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7423 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7424 | struct type_unit_group *tu_group; |
7425 | void **slot; | |
7426 | unsigned int line_offset; | |
7427 | struct type_unit_group type_unit_group_for_lookup; | |
7428 | ||
976ca316 SM |
7429 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7430 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7431 | |
7432 | /* Do we need to create a new group, or can we use an existing one? */ | |
7433 | ||
7434 | if (stmt_list) | |
7435 | { | |
7436 | line_offset = DW_UNSND (stmt_list); | |
7437 | ++tu_stats->nr_symtab_sharers; | |
7438 | } | |
7439 | else | |
7440 | { | |
7441 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7442 | We can do various things here like create one group per TU or | |
7443 | spread them over multiple groups to split up the expansion work. | |
7444 | To avoid worst case scenarios (too many groups or too large groups) | |
7445 | we, umm, group them in bunches. */ | |
7446 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7447 | | (tu_stats->nr_stmt_less_type_units | |
7448 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7449 | ++tu_stats->nr_stmt_less_type_units; | |
7450 | } | |
7451 | ||
094b34ac | 7452 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7453 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7454 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7455 | &type_unit_group_for_lookup, INSERT); |
7456 | if (*slot != NULL) | |
7457 | { | |
9a3c8263 | 7458 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7459 | gdb_assert (tu_group != NULL); |
7460 | } | |
7461 | else | |
7462 | { | |
9c541725 | 7463 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7464 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7465 | *slot = tu_group; |
7466 | ++tu_stats->nr_symtabs; | |
7467 | } | |
7468 | ||
7469 | return tu_group; | |
7470 | } | |
0018ea6f DE |
7471 | \f |
7472 | /* Partial symbol tables. */ | |
7473 | ||
7474 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7475 | ||
7476 | The caller must fill in the following details: | |
7477 | dirname, textlow, texthigh. */ | |
7478 | ||
891813be | 7479 | static dwarf2_psymtab * |
7aa104c4 SM |
7480 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7481 | dwarf2_per_objfile *per_objfile, | |
7482 | const char *name) | |
0018ea6f | 7483 | { |
7aa104c4 | 7484 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7485 | dwarf2_psymtab *pst; |
0018ea6f | 7486 | |
9f4e76a4 | 7487 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7488 | |
6d94535f | 7489 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7490 | |
7491 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7492 | per_cu->v.psymtab = pst; |
7493 | ||
7494 | return pst; | |
7495 | } | |
7496 | ||
c0ab21c2 | 7497 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7498 | |
7499 | static void | |
7500 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7501 | const gdb_byte *info_ptr, |
0018ea6f | 7502 | struct die_info *comp_unit_die, |
c0ab21c2 | 7503 | enum language pretend_language) |
0018ea6f DE |
7504 | { |
7505 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7506 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7507 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7508 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7509 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7510 | CORE_ADDR baseaddr; |
7511 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7512 | dwarf2_psymtab *pst; |
3a2b436a | 7513 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7514 | const char *filename; |
0018ea6f | 7515 | |
0018ea6f DE |
7516 | gdb_assert (! per_cu->is_debug_types); |
7517 | ||
c0ab21c2 | 7518 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7519 | |
0018ea6f | 7520 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7521 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7522 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7523 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7524 | if (filename == NULL) | |
0018ea6f | 7525 | filename = ""; |
2e927613 TV |
7526 | else if (strcmp (filename, artificial) == 0) |
7527 | { | |
7528 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7529 | sect_offset_str (per_cu->sect_off), |
7530 | (char *) NULL)); | |
2e927613 TV |
7531 | filename = debug_filename.get (); |
7532 | } | |
0018ea6f | 7533 | |
7aa104c4 | 7534 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7535 | |
7536 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7537 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7538 | |
b3b3bada | 7539 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7540 | |
7541 | dwarf2_find_base_address (comp_unit_die, cu); | |
7542 | ||
7543 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7544 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7545 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7546 | &best_highpc, cu, pst); | |
7547 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7548 | { |
7549 | CORE_ADDR low | |
7550 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7551 | - baseaddr); | |
7552 | CORE_ADDR high | |
7553 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7554 | - baseaddr - 1); | |
7555 | /* Store the contiguous range if it is not empty; it can be | |
7556 | empty for CUs with no code. */ | |
d320c2b5 TT |
7557 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7558 | low, high, pst); | |
79748972 | 7559 | } |
0018ea6f DE |
7560 | |
7561 | /* Check if comp unit has_children. | |
7562 | If so, read the rest of the partial symbols from this comp unit. | |
7563 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7564 | if (comp_unit_die->has_children) |
0018ea6f DE |
7565 | { |
7566 | struct partial_die_info *first_die; | |
7567 | CORE_ADDR lowpc, highpc; | |
7568 | ||
7569 | lowpc = ((CORE_ADDR) -1); | |
7570 | highpc = ((CORE_ADDR) 0); | |
7571 | ||
7572 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7573 | ||
7574 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7575 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7576 | |
7577 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7578 | complaints from `maint check'. */ | |
7579 | if (lowpc == ((CORE_ADDR) -1)) | |
7580 | lowpc = highpc; | |
7581 | ||
7582 | /* If the compilation unit didn't have an explicit address range, | |
7583 | then use the information extracted from its child dies. */ | |
e385593e | 7584 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7585 | { |
7586 | best_lowpc = lowpc; | |
7587 | best_highpc = highpc; | |
7588 | } | |
7589 | } | |
4ae976d1 | 7590 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7591 | best_lowpc + baseaddr) |
7592 | - baseaddr); | |
4ae976d1 | 7593 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7594 | best_highpc + baseaddr) |
7595 | - baseaddr); | |
0018ea6f | 7596 | |
8763cede | 7597 | end_psymtab_common (objfile, pst); |
0018ea6f | 7598 | |
ae640021 | 7599 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7600 | { |
7601 | int i; | |
ae640021 | 7602 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7603 | |
7604 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7605 | post-pass. */ | |
7606 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7607 | pst->dependencies |
7608 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7609 | for (i = 0; i < len; ++i) |
7610 | { | |
7611 | pst->dependencies[i] | |
7612 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7613 | } | |
0018ea6f | 7614 | |
ae640021 | 7615 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7616 | } |
7617 | ||
7618 | /* Get the list of files included in the current compilation unit, | |
7619 | and build a psymtab for each of them. */ | |
7620 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7621 | ||
b4f54984 | 7622 | if (dwarf_read_debug) |
b926417a TT |
7623 | fprintf_unfiltered (gdb_stdlog, |
7624 | "Psymtab for %s unit @%s: %s - %s" | |
7625 | ", %d global, %d static syms\n", | |
7626 | per_cu->is_debug_types ? "type" : "comp", | |
7627 | sect_offset_str (per_cu->sect_off), | |
7628 | paddress (gdbarch, pst->text_low (objfile)), | |
7629 | paddress (gdbarch, pst->text_high (objfile)), | |
7630 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7631 | } |
7632 | ||
7633 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7634 | Process compilation unit THIS_CU for a psymtab. */ | |
7635 | ||
7636 | static void | |
ab432490 SM |
7637 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7638 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7639 | bool want_partial_unit, |
b93601f3 | 7640 | enum language pretend_language) |
0018ea6f DE |
7641 | { |
7642 | /* If this compilation unit was already read in, free the | |
7643 | cached copy in order to read it in again. This is | |
7644 | necessary because we skipped some symbols when we first | |
7645 | read in the compilation unit (see load_partial_dies). | |
7646 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7647 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7648 | |
2e671100 | 7649 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7650 | |
58990295 TV |
7651 | switch (reader.comp_unit_die->tag) |
7652 | { | |
7653 | case DW_TAG_compile_unit: | |
7654 | this_cu->unit_type = DW_UT_compile; | |
7655 | break; | |
7656 | case DW_TAG_partial_unit: | |
7657 | this_cu->unit_type = DW_UT_partial; | |
7658 | break; | |
7659 | default: | |
7660 | abort (); | |
7661 | } | |
7662 | ||
c0ab21c2 | 7663 | if (reader.dummy_p) |
f1902523 | 7664 | { |
c0ab21c2 | 7665 | /* Nothing. */ |
f1902523 | 7666 | } |
c0ab21c2 | 7667 | else if (this_cu->is_debug_types) |
3e225074 TT |
7668 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7669 | reader.comp_unit_die); | |
135f5437 TT |
7670 | else if (want_partial_unit |
7671 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7672 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7673 | reader.comp_unit_die, | |
c0ab21c2 | 7674 | pretend_language); |
0018ea6f | 7675 | |
7188ed02 | 7676 | this_cu->lang = reader.cu->language; |
58990295 | 7677 | |
0018ea6f | 7678 | /* Age out any secondary CUs. */ |
7188ed02 | 7679 | per_objfile->age_comp_units (); |
0018ea6f | 7680 | } |
f4dc4d17 DE |
7681 | |
7682 | /* Reader function for build_type_psymtabs. */ | |
7683 | ||
7684 | static void | |
7685 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7686 | const gdb_byte *info_ptr, |
3e225074 | 7687 | struct die_info *type_unit_die) |
f4dc4d17 | 7688 | { |
976ca316 SM |
7689 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
7690 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 DE |
7691 | struct dwarf2_cu *cu = reader->cu; |
7692 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7693 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7694 | struct type_unit_group *tu_group; |
7695 | struct attribute *attr; | |
7696 | struct partial_die_info *first_die; | |
7697 | CORE_ADDR lowpc, highpc; | |
891813be | 7698 | dwarf2_psymtab *pst; |
f4dc4d17 | 7699 | |
0186c6a7 DE |
7700 | gdb_assert (per_cu->is_debug_types); |
7701 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7702 | |
3e225074 | 7703 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7704 | return; |
7705 | ||
052c8bb8 | 7706 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7707 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7708 | |
df07e2c7 | 7709 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7710 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7711 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7712 | |
7713 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7714 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7715 | pst->anonymous = true; |
f4dc4d17 DE |
7716 | |
7717 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7718 | ||
7719 | lowpc = (CORE_ADDR) -1; | |
7720 | highpc = (CORE_ADDR) 0; | |
7721 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7722 | ||
8763cede | 7723 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7724 | } |
7725 | ||
73051182 DE |
7726 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7727 | ||
7728 | struct tu_abbrev_offset | |
7729 | { | |
b2bdb8cf SM |
7730 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7731 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7732 | {} | |
7733 | ||
7734 | signatured_type *sig_type; | |
73051182 DE |
7735 | sect_offset abbrev_offset; |
7736 | }; | |
7737 | ||
484cf504 | 7738 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7739 | |
484cf504 TT |
7740 | static bool |
7741 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7742 | const struct tu_abbrev_offset &b) | |
73051182 | 7743 | { |
484cf504 | 7744 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7745 | } |
7746 | ||
7747 | /* Efficiently read all the type units. | |
7748 | This does the bulk of the work for build_type_psymtabs. | |
7749 | ||
7750 | The efficiency is because we sort TUs by the abbrev table they use and | |
7751 | only read each abbrev table once. In one program there are 200K TUs | |
7752 | sharing 8K abbrev tables. | |
7753 | ||
7754 | The main purpose of this function is to support building the | |
5989a64e | 7755 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7756 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7757 | can collapse the search space by grouping them by stmt_list. | |
7758 | The savings can be significant, in the same program from above the 200K TUs | |
7759 | share 8K stmt_list tables. | |
7760 | ||
7761 | FUNC is expected to call get_type_unit_group, which will create the | |
7762 | struct type_unit_group if necessary and add it to | |
5989a64e | 7763 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7764 | |
7765 | static void | |
976ca316 | 7766 | build_type_psymtabs_1 (dwarf2_per_objfile *per_objfile) |
73051182 | 7767 | { |
976ca316 | 7768 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7769 | abbrev_table_up abbrev_table; |
73051182 | 7770 | sect_offset abbrev_offset; |
73051182 DE |
7771 | |
7772 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7773 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7774 | |
976ca316 | 7775 | if (per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7776 | return; |
7777 | ||
7778 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7779 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7780 | read each abbrev table in. | |
7781 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7782 | This is simpler and efficient enough for now. | |
7783 | ||
7784 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7785 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7786 | stmt_list value too so in practice this should work well. | |
7787 | ||
7788 | The basic algorithm here is: | |
7789 | ||
7790 | sort TUs by abbrev table | |
7791 | for each TU with same abbrev table: | |
7792 | read abbrev table if first user | |
7793 | read TU top level DIE | |
7794 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7795 | call FUNC */ | |
7796 | ||
b4f54984 | 7797 | if (dwarf_read_debug) |
73051182 DE |
7798 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7799 | ||
7800 | /* Sort in a separate table to maintain the order of all_type_units | |
7801 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7802 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
976ca316 | 7803 | sorted_by_abbrev.reserve (per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7804 | |
976ca316 | 7805 | for (signatured_type *sig_type : per_objfile->per_bfd->all_type_units) |
b2bdb8cf | 7806 | sorted_by_abbrev.emplace_back |
976ca316 | 7807 | (sig_type, read_abbrev_offset (per_objfile, sig_type->per_cu.section, |
b2bdb8cf | 7808 | sig_type->per_cu.sect_off)); |
73051182 | 7809 | |
484cf504 TT |
7810 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7811 | sort_tu_by_abbrev_offset); | |
73051182 | 7812 | |
9c541725 | 7813 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7814 | |
b2bdb8cf | 7815 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7816 | { |
73051182 DE |
7817 | /* Switch to the next abbrev table if necessary. */ |
7818 | if (abbrev_table == NULL | |
b2bdb8cf | 7819 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7820 | { |
b2bdb8cf | 7821 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7822 | abbrev_table = |
976ca316 SM |
7823 | abbrev_table::read (per_objfile->objfile, |
7824 | &per_objfile->per_bfd->abbrev, abbrev_offset); | |
73051182 DE |
7825 | ++tu_stats->nr_uniq_abbrev_tables; |
7826 | } | |
7827 | ||
976ca316 | 7828 | cutu_reader reader (&tu.sig_type->per_cu, per_objfile, |
2e671100 | 7829 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7830 | if (!reader.dummy_p) |
7831 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7832 | reader.comp_unit_die); |
73051182 | 7833 | } |
6aa5f3a6 | 7834 | } |
73051182 | 7835 | |
6aa5f3a6 DE |
7836 | /* Print collected type unit statistics. */ |
7837 | ||
7838 | static void | |
976ca316 | 7839 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7840 | { |
976ca316 | 7841 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 DE |
7842 | |
7843 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf | 7844 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
976ca316 | 7845 | per_objfile->per_bfd->all_type_units.size ()); |
6aa5f3a6 DE |
7846 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7847 | tu_stats->nr_uniq_abbrev_tables); | |
7848 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7849 | tu_stats->nr_symtabs); | |
7850 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7851 | tu_stats->nr_symtab_sharers); | |
7852 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7853 | tu_stats->nr_stmt_less_type_units); | |
7854 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7855 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7856 | } |
7857 | ||
f4dc4d17 DE |
7858 | /* Traversal function for build_type_psymtabs. */ |
7859 | ||
7860 | static int | |
7861 | build_type_psymtab_dependencies (void **slot, void *info) | |
7862 | { | |
976ca316 SM |
7863 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
7864 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 | 7865 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
094b34ac | 7866 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7867 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7868 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7869 | int i; |
7870 | ||
7871 | gdb_assert (len > 0); | |
197400e8 | 7872 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7873 | |
7874 | pst->number_of_dependencies = len; | |
a9342b62 | 7875 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7876 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7877 | { |
df07e2c7 | 7878 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7879 | gdb_assert (iter->per_cu.is_debug_types); |
7880 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7881 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7882 | } |
7883 | ||
df07e2c7 AB |
7884 | delete tu_group->tus; |
7885 | tu_group->tus = nullptr; | |
348e048f DE |
7886 | |
7887 | return 1; | |
7888 | } | |
7889 | ||
7890 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7891 | Build partial symbol tables for the .debug_types comp-units. */ | |
7892 | ||
7893 | static void | |
976ca316 | 7894 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
348e048f | 7895 | { |
976ca316 | 7896 | if (! create_all_type_units (per_objfile)) |
348e048f DE |
7897 | return; |
7898 | ||
976ca316 | 7899 | build_type_psymtabs_1 (per_objfile); |
6aa5f3a6 | 7900 | } |
f4dc4d17 | 7901 | |
6aa5f3a6 DE |
7902 | /* Traversal function for process_skeletonless_type_unit. |
7903 | Read a TU in a DWO file and build partial symbols for it. */ | |
7904 | ||
7905 | static int | |
7906 | process_skeletonless_type_unit (void **slot, void *info) | |
7907 | { | |
7908 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 7909 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
7910 | struct signatured_type find_entry, *entry; |
7911 | ||
7912 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7913 | ||
976ca316 SM |
7914 | if (per_objfile->per_bfd->signatured_types == NULL) |
7915 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7916 | |
7917 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 7918 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7919 | &find_entry, INSERT); |
6aa5f3a6 DE |
7920 | /* If we've already seen this type there's nothing to do. What's happening |
7921 | is we're doing our own version of comdat-folding here. */ | |
7922 | if (*slot != NULL) | |
7923 | return 1; | |
7924 | ||
7925 | /* This does the job that create_all_type_units would have done for | |
7926 | this TU. */ | |
976ca316 SM |
7927 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
7928 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7929 | *slot = entry; |
7930 | ||
7931 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
976ca316 | 7932 | cutu_reader reader (&entry->per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
7933 | if (!reader.dummy_p) |
7934 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7935 | reader.comp_unit_die); |
6aa5f3a6 DE |
7936 | |
7937 | return 1; | |
7938 | } | |
7939 | ||
7940 | /* Traversal function for process_skeletonless_type_units. */ | |
7941 | ||
7942 | static int | |
7943 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7944 | { | |
7945 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7946 | ||
7947 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7948 | htab_traverse_noresize (dwo_file->tus.get (), |
7949 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7950 | |
7951 | return 1; | |
7952 | } | |
7953 | ||
7954 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7955 | This is needed in case a TU was emitted without its skeleton. | |
7956 | Note: This can't be done until we know what all the DWO files are. */ | |
7957 | ||
7958 | static void | |
976ca316 | 7959 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
7960 | { |
7961 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
7962 | if (get_dwp_file (per_objfile) == NULL |
7963 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 7964 | { |
976ca316 | 7965 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 7966 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 7967 | per_objfile); |
6aa5f3a6 | 7968 | } |
348e048f DE |
7969 | } |
7970 | ||
ed2dc618 | 7971 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7972 | |
7973 | static void | |
976ca316 | 7974 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 7975 | { |
976ca316 | 7976 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 7977 | { |
891813be | 7978 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7979 | |
36586728 TT |
7980 | if (pst == NULL) |
7981 | continue; | |
7982 | ||
b76e467d | 7983 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7984 | { |
7985 | /* Set the 'user' field only if it is not already set. */ | |
7986 | if (pst->dependencies[j]->user == NULL) | |
7987 | pst->dependencies[j]->user = pst; | |
7988 | } | |
7989 | } | |
7990 | } | |
7991 | ||
93311388 DE |
7992 | /* Build the partial symbol table by doing a quick pass through the |
7993 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7994 | |
93311388 | 7995 | static void |
976ca316 | 7996 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 7997 | { |
976ca316 | 7998 | struct objfile *objfile = per_objfile->objfile; |
93311388 | 7999 | |
b4f54984 | 8000 | if (dwarf_read_debug) |
45cfd468 DE |
8001 | { |
8002 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8003 | objfile_name (objfile)); |
45cfd468 DE |
8004 | } |
8005 | ||
76935768 | 8006 | scoped_restore restore_reading_psyms |
976ca316 | 8007 | = make_scoped_restore (&per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 8008 | true); |
98bfdba5 | 8009 | |
976ca316 | 8010 | per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 8011 | |
93311388 DE |
8012 | /* Any cached compilation units will be linked by the per-objfile |
8013 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 8014 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 8015 | |
976ca316 | 8016 | build_type_psymtabs (per_objfile); |
348e048f | 8017 | |
976ca316 | 8018 | create_all_comp_units (per_objfile); |
c906108c | 8019 | |
60606b2c TT |
8020 | /* Create a temporary address map on a temporary obstack. We later |
8021 | copy this to the final obstack. */ | |
8268c778 | 8022 | auto_obstack temp_obstack; |
791afaa2 TT |
8023 | |
8024 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8025 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8026 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8027 | |
976ca316 | 8028 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
8029 | { |
8030 | if (per_cu->v.psymtab != NULL) | |
8031 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
8032 | continue; | |
976ca316 | 8033 | process_psymtab_comp_unit (per_cu, per_objfile, false, |
ab432490 | 8034 | language_minimal); |
3d5afab3 | 8035 | } |
ff013f42 | 8036 | |
6aa5f3a6 | 8037 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 8038 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
8039 | |
8040 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
976ca316 | 8041 | if (per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 8042 | { |
976ca316 SM |
8043 | htab_traverse_noresize (per_objfile->per_bfd->type_unit_groups.get (), |
8044 | build_type_psymtab_dependencies, per_objfile); | |
6aa5f3a6 DE |
8045 | } |
8046 | ||
b4f54984 | 8047 | if (dwarf_read_debug) |
976ca316 | 8048 | print_tu_stats (per_objfile); |
6aa5f3a6 | 8049 | |
976ca316 | 8050 | set_partial_user (per_objfile); |
95554aad | 8051 | |
d320c2b5 TT |
8052 | objfile->partial_symtabs->psymtabs_addrmap |
8053 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8054 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8055 | /* At this point we want to keep the address map. */ |
8056 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8057 | |
b4f54984 | 8058 | if (dwarf_read_debug) |
45cfd468 | 8059 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8060 | objfile_name (objfile)); |
ae038cb0 DJ |
8061 | } |
8062 | ||
dee91e82 DE |
8063 | /* Load the partial DIEs for a secondary CU into memory. |
8064 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8065 | |
dee91e82 | 8066 | static void |
ab432490 | 8067 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
8068 | dwarf2_per_objfile *per_objfile, |
8069 | dwarf2_cu *existing_cu) | |
dee91e82 | 8070 | { |
2e671100 | 8071 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
8072 | |
8073 | if (!reader.dummy_p) | |
8074 | { | |
8075 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8076 | language_minimal); | |
8077 | ||
8078 | /* Check if comp unit has_children. | |
8079 | If so, read the rest of the partial symbols from this comp unit. | |
8080 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8081 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8082 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8083 | |
8084 | reader.keep (); | |
c0ab21c2 | 8085 | } |
ae038cb0 DJ |
8086 | } |
8087 | ||
ae038cb0 | 8088 | static void |
976ca316 | 8089 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 8090 | struct dwarf2_section_info *section, |
f1902523 | 8091 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8092 | unsigned int is_dwz) |
ae038cb0 | 8093 | { |
d521ce57 | 8094 | const gdb_byte *info_ptr; |
976ca316 | 8095 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 8096 | |
b4f54984 | 8097 | if (dwarf_read_debug) |
bf6af496 | 8098 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
8099 | section->get_name (), |
8100 | section->get_file_name ()); | |
bf6af496 | 8101 | |
96b79293 | 8102 | section->read (objfile); |
ae038cb0 | 8103 | |
36586728 | 8104 | info_ptr = section->buffer; |
6e70227d | 8105 | |
36586728 | 8106 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8107 | { |
ae038cb0 | 8108 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8109 | |
9c541725 | 8110 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8111 | |
f1902523 | 8112 | comp_unit_head cu_header; |
976ca316 | 8113 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 SM |
8114 | abbrev_section, info_ptr, |
8115 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8116 | |
8117 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8118 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 8119 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8120 | else |
8121 | { | |
976ca316 | 8122 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8123 | sig_type->signature = cu_header.signature; |
8124 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8125 | this_cu = &sig_type->per_cu; | |
8126 | } | |
8127 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8128 | this_cu->sect_off = sect_off; |
f1902523 | 8129 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8130 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8131 | this_cu->section = section; |
ae038cb0 | 8132 | |
976ca316 | 8133 | per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8134 | |
8135 | info_ptr = info_ptr + this_cu->length; | |
8136 | } | |
36586728 TT |
8137 | } |
8138 | ||
8139 | /* Create a list of all compilation units in OBJFILE. | |
8140 | This is only done for -readnow and building partial symtabs. */ | |
8141 | ||
8142 | static void | |
976ca316 | 8143 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 8144 | { |
976ca316 SM |
8145 | gdb_assert (per_objfile->per_bfd->all_comp_units.empty ()); |
8146 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, | |
8147 | &per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8148 | |
976ca316 | 8149 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 8150 | if (dwz != NULL) |
976ca316 | 8151 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1); |
c906108c SS |
8152 | } |
8153 | ||
5734ee8b | 8154 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8155 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8156 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8157 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8158 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8159 | |
72bf9492 DJ |
8160 | static void |
8161 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8162 | CORE_ADDR *highpc, int set_addrmap, |
8163 | struct dwarf2_cu *cu) | |
c906108c | 8164 | { |
72bf9492 | 8165 | struct partial_die_info *pdi; |
c906108c | 8166 | |
91c24f0a DC |
8167 | /* Now, march along the PDI's, descending into ones which have |
8168 | interesting children but skipping the children of the other ones, | |
8169 | until we reach the end of the compilation unit. */ | |
c906108c | 8170 | |
72bf9492 | 8171 | pdi = first_die; |
91c24f0a | 8172 | |
72bf9492 DJ |
8173 | while (pdi != NULL) |
8174 | { | |
52356b79 | 8175 | pdi->fixup (cu); |
c906108c | 8176 | |
f55ee35c | 8177 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8178 | children, so we need to look at them. Ditto for anonymous |
8179 | enums. */ | |
933c6fe4 | 8180 | |
7d00ffec | 8181 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8182 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8183 | || pdi->tag == DW_TAG_imported_unit |
8184 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8185 | { |
72bf9492 | 8186 | switch (pdi->tag) |
c906108c SS |
8187 | { |
8188 | case DW_TAG_subprogram: | |
b1dc1806 | 8189 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8190 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
8191 | if (cu->language == language_cplus) |
8192 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
8193 | set_addrmap, cu); | |
c906108c | 8194 | break; |
72929c62 | 8195 | case DW_TAG_constant: |
c906108c SS |
8196 | case DW_TAG_variable: |
8197 | case DW_TAG_typedef: | |
91c24f0a | 8198 | case DW_TAG_union_type: |
317d2668 TV |
8199 | if (!pdi->is_declaration |
8200 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8201 | { |
72bf9492 | 8202 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8203 | } |
8204 | break; | |
c906108c | 8205 | case DW_TAG_class_type: |
680b30c7 | 8206 | case DW_TAG_interface_type: |
c906108c | 8207 | case DW_TAG_structure_type: |
72bf9492 | 8208 | if (!pdi->is_declaration) |
c906108c | 8209 | { |
72bf9492 | 8210 | add_partial_symbol (pdi, cu); |
c906108c | 8211 | } |
b7fee5a3 KS |
8212 | if ((cu->language == language_rust |
8213 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8214 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8215 | set_addrmap, cu); | |
c906108c | 8216 | break; |
91c24f0a | 8217 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8218 | if (!pdi->is_declaration) |
8219 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8220 | break; |
8221 | case DW_TAG_base_type: | |
a02abb62 | 8222 | case DW_TAG_subrange_type: |
c906108c | 8223 | /* File scope base type definitions are added to the partial |
c5aa993b | 8224 | symbol table. */ |
72bf9492 | 8225 | add_partial_symbol (pdi, cu); |
c906108c | 8226 | break; |
d9fa45fe | 8227 | case DW_TAG_namespace: |
cdc07690 | 8228 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8229 | break; |
5d7cb8df | 8230 | case DW_TAG_module: |
59c35742 AB |
8231 | if (!pdi->is_declaration) |
8232 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8233 | break; |
95554aad TT |
8234 | case DW_TAG_imported_unit: |
8235 | { | |
8236 | struct dwarf2_per_cu_data *per_cu; | |
8237 | ||
f4dc4d17 DE |
8238 | /* For now we don't handle imported units in type units. */ |
8239 | if (cu->per_cu->is_debug_types) | |
8240 | { | |
8241 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8242 | " supported in type units [in module %s]"), | |
5e22e966 | 8243 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8244 | } |
8245 | ||
e3b94546 | 8246 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8247 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8248 | |
8249 | /* Go read the partial unit, if needed. */ | |
8250 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8251 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8252 | cu->language); | |
95554aad | 8253 | |
ae640021 | 8254 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8255 | } |
8256 | break; | |
74921315 KS |
8257 | case DW_TAG_imported_declaration: |
8258 | add_partial_symbol (pdi, cu); | |
8259 | break; | |
c906108c SS |
8260 | default: |
8261 | break; | |
8262 | } | |
8263 | } | |
8264 | ||
72bf9492 DJ |
8265 | /* If the die has a sibling, skip to the sibling. */ |
8266 | ||
8267 | pdi = pdi->die_sibling; | |
8268 | } | |
8269 | } | |
8270 | ||
8271 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8272 | |
72bf9492 | 8273 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8274 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8275 | Enumerators are an exception; they use the scope of their parent |
8276 | enumeration type, i.e. the name of the enumeration type is not | |
8277 | prepended to the enumerator. | |
91c24f0a | 8278 | |
72bf9492 DJ |
8279 | There are two complexities. One is DW_AT_specification; in this |
8280 | case "parent" means the parent of the target of the specification, | |
8281 | instead of the direct parent of the DIE. The other is compilers | |
8282 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8283 | the fully qualified name of structure types from their members' | |
8284 | linkage names. This must be done using the DIE's children rather | |
8285 | than the children of any DW_AT_specification target. We only need | |
8286 | to do this for structures at the top level, i.e. if the target of | |
8287 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8288 | have a parent. */ | |
8289 | ||
8290 | /* Compute the scope prefix associated with PDI's parent, in | |
8291 | compilation unit CU. The result will be allocated on CU's | |
8292 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8293 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8294 | static const char * |
72bf9492 DJ |
8295 | partial_die_parent_scope (struct partial_die_info *pdi, |
8296 | struct dwarf2_cu *cu) | |
8297 | { | |
15d034d0 | 8298 | const char *grandparent_scope; |
72bf9492 | 8299 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8300 | |
72bf9492 DJ |
8301 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8302 | then this means the parent of the specification DIE. */ | |
8303 | ||
8304 | real_pdi = pdi; | |
72bf9492 | 8305 | while (real_pdi->has_specification) |
fb816e8b | 8306 | { |
122cf0f2 AB |
8307 | auto res = find_partial_die (real_pdi->spec_offset, |
8308 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8309 | real_pdi = res.pdi; |
8310 | cu = res.cu; | |
8311 | } | |
72bf9492 DJ |
8312 | |
8313 | parent = real_pdi->die_parent; | |
8314 | if (parent == NULL) | |
8315 | return NULL; | |
8316 | ||
8317 | if (parent->scope_set) | |
8318 | return parent->scope; | |
8319 | ||
52356b79 | 8320 | parent->fixup (cu); |
72bf9492 | 8321 | |
10b3939b | 8322 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8323 | |
acebe513 UW |
8324 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8325 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8326 | Work around this problem here. */ | |
8327 | if (cu->language == language_cplus | |
6e70227d | 8328 | && parent->tag == DW_TAG_namespace |
7d00ffec | 8329 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
8330 | && grandparent_scope == NULL) |
8331 | { | |
8332 | parent->scope = NULL; | |
8333 | parent->scope_set = 1; | |
8334 | return NULL; | |
8335 | } | |
8336 | ||
0a4b0913 | 8337 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8338 | if (pdi->tag == DW_TAG_enumerator) |
8339 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8340 | parent->scope = grandparent_scope; | |
8341 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8342 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8343 | || parent->tag == DW_TAG_structure_type |
8344 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8345 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8346 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8347 | || parent->tag == DW_TAG_enumeration_type |
8348 | || (cu->language == language_fortran | |
8349 | && parent->tag == DW_TAG_subprogram | |
8350 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8351 | { |
8352 | if (grandparent_scope == NULL) | |
7d00ffec | 8353 | parent->scope = parent->name (cu); |
72bf9492 | 8354 | else |
3e43a32a MS |
8355 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8356 | grandparent_scope, | |
7d00ffec | 8357 | parent->name (cu), 0, cu); |
72bf9492 | 8358 | } |
72bf9492 DJ |
8359 | else |
8360 | { | |
8361 | /* FIXME drow/2004-04-01: What should we be doing with | |
8362 | function-local names? For partial symbols, we should probably be | |
8363 | ignoring them. */ | |
fa9c3fa0 TT |
8364 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8365 | dwarf_tag_name (parent->tag), | |
8366 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8367 | parent->scope = grandparent_scope; |
c906108c SS |
8368 | } |
8369 | ||
72bf9492 DJ |
8370 | parent->scope_set = 1; |
8371 | return parent->scope; | |
8372 | } | |
8373 | ||
8374 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8375 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8376 | |
43816ebc | 8377 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8378 | partial_die_full_name (struct partial_die_info *pdi, |
8379 | struct dwarf2_cu *cu) | |
8380 | { | |
15d034d0 | 8381 | const char *parent_scope; |
72bf9492 | 8382 | |
98bfdba5 PA |
8383 | /* If this is a template instantiation, we can not work out the |
8384 | template arguments from partial DIEs. So, unfortunately, we have | |
8385 | to go through the full DIEs. At least any work we do building | |
8386 | types here will be reused if full symbols are loaded later. */ | |
8387 | if (pdi->has_template_arguments) | |
8388 | { | |
52356b79 | 8389 | pdi->fixup (cu); |
98bfdba5 | 8390 | |
7d00ffec | 8391 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8392 | { |
8393 | struct die_info *die; | |
8394 | struct attribute attr; | |
8395 | struct dwarf2_cu *ref_cu = cu; | |
8396 | ||
b64f50a1 | 8397 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8398 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8399 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8400 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8401 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8402 | ||
43816ebc | 8403 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8404 | } |
8405 | } | |
8406 | ||
72bf9492 DJ |
8407 | parent_scope = partial_die_parent_scope (pdi, cu); |
8408 | if (parent_scope == NULL) | |
8409 | return NULL; | |
8410 | else | |
43816ebc | 8411 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8412 | pdi->name (cu), |
8413 | 0, cu)); | |
c906108c SS |
8414 | } |
8415 | ||
8416 | static void | |
72bf9492 | 8417 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8418 | { |
976ca316 SM |
8419 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8420 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8421 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8422 | CORE_ADDR addr = 0; |
15d034d0 | 8423 | const char *actual_name = NULL; |
e142c38c DJ |
8424 | CORE_ADDR baseaddr; |
8425 | ||
b3b3bada | 8426 | baseaddr = objfile->text_section_offset (); |
c906108c | 8427 | |
43816ebc TT |
8428 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8429 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8430 | if (built_actual_name != NULL) |
43816ebc | 8431 | actual_name = built_actual_name.get (); |
63d06c5c | 8432 | |
72bf9492 | 8433 | if (actual_name == NULL) |
7d00ffec | 8434 | actual_name = pdi->name (cu); |
72bf9492 | 8435 | |
76e288d1 TT |
8436 | partial_symbol psymbol; |
8437 | memset (&psymbol, 0, sizeof (psymbol)); | |
8438 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
8439 | psymbol.ginfo.section = -1; | |
8440 | ||
8441 | /* The code below indicates that the psymbol should be installed by | |
8442 | setting this. */ | |
8443 | gdb::optional<psymbol_placement> where; | |
8444 | ||
c906108c SS |
8445 | switch (pdi->tag) |
8446 | { | |
b1dc1806 | 8447 | case DW_TAG_inlined_subroutine: |
c906108c | 8448 | case DW_TAG_subprogram: |
79748972 TT |
8449 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8450 | - baseaddr); | |
0a4b0913 AB |
8451 | if (pdi->is_external |
8452 | || cu->language == language_ada | |
8453 | || (cu->language == language_fortran | |
8454 | && pdi->die_parent != NULL | |
8455 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8456 | { | |
8457 | /* Normally, only "external" DIEs are part of the global scope. | |
8458 | But in Ada and Fortran, we want to be able to access nested | |
8459 | procedures globally. So all Ada and Fortran subprograms are | |
8460 | stored in the global scope. */ | |
76e288d1 | 8461 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8462 | } |
8463 | else | |
76e288d1 TT |
8464 | where = psymbol_placement::STATIC; |
8465 | ||
8466 | psymbol.domain = VAR_DOMAIN; | |
8467 | psymbol.aclass = LOC_BLOCK; | |
8468 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8469 | psymbol.ginfo.value.address = addr; | |
0c1b455e TT |
8470 | |
8471 | if (pdi->main_subprogram && actual_name != NULL) | |
8472 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8473 | break; |
72929c62 | 8474 | case DW_TAG_constant: |
76e288d1 TT |
8475 | psymbol.domain = VAR_DOMAIN; |
8476 | psymbol.aclass = LOC_STATIC; | |
8477 | where = (pdi->is_external | |
8478 | ? psymbol_placement::GLOBAL | |
8479 | : psymbol_placement::STATIC); | |
72929c62 | 8480 | break; |
c906108c | 8481 | case DW_TAG_variable: |
95554aad TT |
8482 | if (pdi->d.locdesc) |
8483 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8484 | |
95554aad | 8485 | if (pdi->d.locdesc |
caac4577 | 8486 | && addr == 0 |
976ca316 | 8487 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8488 | { |
8489 | /* A global or static variable may also have been stripped | |
8490 | out by the linker if unused, in which case its address | |
8491 | will be nullified; do not add such variables into partial | |
8492 | symbol table then. */ | |
8493 | } | |
8494 | else if (pdi->is_external) | |
c906108c SS |
8495 | { |
8496 | /* Global Variable. | |
8497 | Don't enter into the minimal symbol tables as there is | |
8498 | a minimal symbol table entry from the ELF symbols already. | |
8499 | Enter into partial symbol table if it has a location | |
8500 | descriptor or a type. | |
8501 | If the location descriptor is missing, new_symbol will create | |
8502 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8503 | be determined from the minimal symbol table whenever the variable | |
8504 | is referenced. | |
8505 | The address for the partial symbol table entry is not | |
8506 | used by GDB, but it comes in handy for debugging partial symbol | |
8507 | table building. */ | |
8508 | ||
95554aad | 8509 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8510 | { |
8511 | psymbol.domain = VAR_DOMAIN; | |
8512 | psymbol.aclass = LOC_STATIC; | |
8513 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8514 | psymbol.ginfo.value.address = addr; | |
8515 | where = psymbol_placement::GLOBAL; | |
8516 | } | |
c906108c SS |
8517 | } |
8518 | else | |
8519 | { | |
ff908ebf AW |
8520 | int has_loc = pdi->d.locdesc != NULL; |
8521 | ||
8522 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8523 | without location descriptors or constant values). */ | |
8524 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8525 | return; |
ff908ebf | 8526 | |
76e288d1 TT |
8527 | psymbol.domain = VAR_DOMAIN; |
8528 | psymbol.aclass = LOC_STATIC; | |
8529 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8530 | if (has_loc) | |
8531 | psymbol.ginfo.value.address = addr; | |
8532 | where = psymbol_placement::STATIC; | |
c906108c SS |
8533 | } |
8534 | break; | |
8535 | case DW_TAG_typedef: | |
8536 | case DW_TAG_base_type: | |
a02abb62 | 8537 | case DW_TAG_subrange_type: |
76e288d1 TT |
8538 | psymbol.domain = VAR_DOMAIN; |
8539 | psymbol.aclass = LOC_TYPEDEF; | |
8540 | where = psymbol_placement::STATIC; | |
c906108c | 8541 | break; |
74921315 | 8542 | case DW_TAG_imported_declaration: |
72bf9492 | 8543 | case DW_TAG_namespace: |
76e288d1 TT |
8544 | psymbol.domain = VAR_DOMAIN; |
8545 | psymbol.aclass = LOC_TYPEDEF; | |
8546 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8547 | break; |
530e8392 | 8548 | case DW_TAG_module: |
a5fd13a9 BH |
8549 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8550 | available without any name. If so, we skip the module as it | |
8551 | doesn't bring any value. */ | |
8552 | if (actual_name != nullptr) | |
76e288d1 TT |
8553 | { |
8554 | psymbol.domain = MODULE_DOMAIN; | |
8555 | psymbol.aclass = LOC_TYPEDEF; | |
8556 | where = psymbol_placement::GLOBAL; | |
8557 | } | |
530e8392 | 8558 | break; |
c906108c | 8559 | case DW_TAG_class_type: |
680b30c7 | 8560 | case DW_TAG_interface_type: |
c906108c SS |
8561 | case DW_TAG_structure_type: |
8562 | case DW_TAG_union_type: | |
8563 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8564 | /* Skip external references. The DWARF standard says in the section |
8565 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8566 | structure, union or class type is represented by a structure, | |
8567 | union or class entry that does not have a byte size attribute | |
8568 | and that has a DW_AT_declaration attribute." */ | |
8569 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8570 | return; |
fa4028e9 | 8571 | |
63d06c5c DC |
8572 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8573 | static vs. global. */ | |
76e288d1 TT |
8574 | psymbol.domain = STRUCT_DOMAIN; |
8575 | psymbol.aclass = LOC_TYPEDEF; | |
8576 | where = (cu->language == language_cplus | |
8577 | ? psymbol_placement::GLOBAL | |
8578 | : psymbol_placement::STATIC); | |
c906108c SS |
8579 | break; |
8580 | case DW_TAG_enumerator: | |
76e288d1 TT |
8581 | psymbol.domain = VAR_DOMAIN; |
8582 | psymbol.aclass = LOC_CONST; | |
8583 | where = (cu->language == language_cplus | |
8584 | ? psymbol_placement::GLOBAL | |
8585 | : psymbol_placement::STATIC); | |
c906108c SS |
8586 | break; |
8587 | default: | |
8588 | break; | |
8589 | } | |
76e288d1 TT |
8590 | |
8591 | if (where.has_value ()) | |
8592 | { | |
f049a313 TT |
8593 | if (built_actual_name != nullptr) |
8594 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8595 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8596 | psymbol.ginfo.set_linkage_name (actual_name); | |
8597 | else | |
8598 | { | |
8599 | psymbol.ginfo.set_demangled_name (actual_name, | |
8600 | &objfile->objfile_obstack); | |
8601 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8602 | } | |
76e288d1 TT |
8603 | add_psymbol_to_list (psymbol, *where, objfile); |
8604 | } | |
c906108c SS |
8605 | } |
8606 | ||
5c4e30ca DC |
8607 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8608 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8609 | the name of the enclosing namespace. */ | |
91c24f0a | 8610 | |
72bf9492 DJ |
8611 | static void |
8612 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8613 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8614 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8615 | { |
72bf9492 | 8616 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8617 | |
72bf9492 | 8618 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8619 | |
8620 | /* Now scan partial symbols in that namespace. */ | |
8621 | ||
91c24f0a | 8622 | if (pdi->has_children) |
cdc07690 | 8623 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8624 | } |
8625 | ||
5d7cb8df JK |
8626 | /* Read a partial die corresponding to a Fortran module. */ |
8627 | ||
8628 | static void | |
8629 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8630 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8631 | { |
530e8392 KB |
8632 | /* Add a symbol for the namespace. */ |
8633 | ||
8634 | add_partial_symbol (pdi, cu); | |
8635 | ||
f55ee35c | 8636 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8637 | |
8638 | if (pdi->has_children) | |
cdc07690 | 8639 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8640 | } |
8641 | ||
b1dc1806 XR |
8642 | /* Read a partial die corresponding to a subprogram or an inlined |
8643 | subprogram and create a partial symbol for that subprogram. | |
8644 | When the CU language allows it, this routine also defines a partial | |
8645 | symbol for each nested subprogram that this subprogram contains. | |
8646 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8647 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8648 | |
cdc07690 YQ |
8649 | PDI may also be a lexical block, in which case we simply search |
8650 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8651 | Again, this is only performed when the CU language allows this |
8652 | type of definitions. */ | |
8653 | ||
8654 | static void | |
8655 | add_partial_subprogram (struct partial_die_info *pdi, | |
8656 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8657 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8658 | { |
b1dc1806 | 8659 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8660 | { |
8661 | if (pdi->has_pc_info) | |
8662 | { | |
8663 | if (pdi->lowpc < *lowpc) | |
8664 | *lowpc = pdi->lowpc; | |
8665 | if (pdi->highpc > *highpc) | |
8666 | *highpc = pdi->highpc; | |
cdc07690 | 8667 | if (set_addrmap) |
5734ee8b | 8668 | { |
5e22e966 | 8669 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8670 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8671 | CORE_ADDR baseaddr; |
b926417a TT |
8672 | CORE_ADDR this_highpc; |
8673 | CORE_ADDR this_lowpc; | |
5734ee8b | 8674 | |
b3b3bada | 8675 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8676 | this_lowpc |
8677 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8678 | pdi->lowpc + baseaddr) | |
8679 | - baseaddr); | |
8680 | this_highpc | |
8681 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8682 | pdi->highpc + baseaddr) | |
8683 | - baseaddr); | |
d320c2b5 | 8684 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8685 | this_lowpc, this_highpc - 1, |
9291a0cd | 8686 | cu->per_cu->v.psymtab); |
5734ee8b | 8687 | } |
481860b3 GB |
8688 | } |
8689 | ||
8690 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8691 | { | |
bc30ff58 | 8692 | if (!pdi->is_declaration) |
e8d05480 JB |
8693 | /* Ignore subprogram DIEs that do not have a name, they are |
8694 | illegal. Do not emit a complaint at this point, we will | |
8695 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8696 | if (pdi->name (cu)) |
e8d05480 | 8697 | add_partial_symbol (pdi, cu); |
bc30ff58 JB |
8698 | } |
8699 | } | |
6e70227d | 8700 | |
bc30ff58 JB |
8701 | if (! pdi->has_children) |
8702 | return; | |
8703 | ||
0a4b0913 | 8704 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8705 | { |
8706 | pdi = pdi->die_child; | |
8707 | while (pdi != NULL) | |
8708 | { | |
52356b79 | 8709 | pdi->fixup (cu); |
bc30ff58 | 8710 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8711 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8712 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8713 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8714 | pdi = pdi->die_sibling; |
8715 | } | |
8716 | } | |
8717 | } | |
8718 | ||
91c24f0a DC |
8719 | /* Read a partial die corresponding to an enumeration type. */ |
8720 | ||
72bf9492 DJ |
8721 | static void |
8722 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8723 | struct dwarf2_cu *cu) | |
91c24f0a | 8724 | { |
72bf9492 | 8725 | struct partial_die_info *pdi; |
91c24f0a | 8726 | |
7d00ffec | 8727 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8728 | add_partial_symbol (enum_pdi, cu); |
8729 | ||
8730 | pdi = enum_pdi->die_child; | |
8731 | while (pdi) | |
91c24f0a | 8732 | { |
7d00ffec | 8733 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8734 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8735 | else |
72bf9492 DJ |
8736 | add_partial_symbol (pdi, cu); |
8737 | pdi = pdi->die_sibling; | |
91c24f0a | 8738 | } |
91c24f0a DC |
8739 | } |
8740 | ||
6caca83c CC |
8741 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8742 | ||
8743 | static unsigned int | |
d521ce57 | 8744 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8745 | { |
8746 | unsigned int bytes_read; | |
8747 | ||
8748 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8749 | } | |
8750 | ||
685af9cd TT |
8751 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8752 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8753 | ||
4bb7a0a7 DJ |
8754 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8755 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8756 | the initial number. */ | |
8757 | ||
8758 | static struct abbrev_info * | |
685af9cd TT |
8759 | peek_die_abbrev (const die_reader_specs &reader, |
8760 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8761 | { |
685af9cd | 8762 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8763 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8764 | unsigned int abbrev_number |
8765 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8766 | |
8767 | if (abbrev_number == 0) | |
8768 | return NULL; | |
8769 | ||
685af9cd | 8770 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8771 | if (!abbrev) |
8772 | { | |
422b9917 | 8773 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8774 | " at offset %s [in module %s]"), |
422b9917 | 8775 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8776 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8777 | } |
8778 | ||
8779 | return abbrev; | |
8780 | } | |
8781 | ||
93311388 DE |
8782 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8783 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8784 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8785 | ||
d521ce57 TT |
8786 | static const gdb_byte * |
8787 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8788 | { |
4bb7a0a7 DJ |
8789 | while (1) |
8790 | { | |
685af9cd TT |
8791 | unsigned int bytes_read; |
8792 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8793 | ||
4bb7a0a7 DJ |
8794 | if (abbrev == NULL) |
8795 | return info_ptr + bytes_read; | |
8796 | else | |
dee91e82 | 8797 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8798 | } |
8799 | } | |
8800 | ||
93311388 DE |
8801 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8802 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8803 | abbrev corresponding to that skipped uleb128 should be passed in |
8804 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8805 | children. */ | |
8806 | ||
d521ce57 TT |
8807 | static const gdb_byte * |
8808 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8809 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8810 | { |
8811 | unsigned int bytes_read; | |
8812 | struct attribute attr; | |
dee91e82 DE |
8813 | bfd *abfd = reader->abfd; |
8814 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8815 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8816 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8817 | unsigned int form, i; |
8818 | ||
8819 | for (i = 0; i < abbrev->num_attrs; i++) | |
8820 | { | |
8821 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8822 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8823 | { | |
18a8505e AT |
8824 | bool ignored; |
8825 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8826 | &ignored); | |
4bb7a0a7 | 8827 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8828 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8829 | else |
b9502d3f | 8830 | { |
0826b30a | 8831 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8832 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8833 | |
8834 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8835 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8836 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8837 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8838 | else |
8839 | return sibling_ptr; | |
8840 | } | |
4bb7a0a7 DJ |
8841 | } |
8842 | ||
8843 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8844 | form = abbrev->attrs[i].form; | |
8845 | skip_attribute: | |
8846 | switch (form) | |
8847 | { | |
4bb7a0a7 | 8848 | case DW_FORM_ref_addr: |
ae411497 TT |
8849 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8850 | and later it is offset sized. */ | |
8851 | if (cu->header.version == 2) | |
8852 | info_ptr += cu->header.addr_size; | |
8853 | else | |
8854 | info_ptr += cu->header.offset_size; | |
8855 | break; | |
36586728 TT |
8856 | case DW_FORM_GNU_ref_alt: |
8857 | info_ptr += cu->header.offset_size; | |
8858 | break; | |
ae411497 | 8859 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8860 | info_ptr += cu->header.addr_size; |
8861 | break; | |
8862 | case DW_FORM_data1: | |
8863 | case DW_FORM_ref1: | |
8864 | case DW_FORM_flag: | |
8fe0f950 | 8865 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8866 | info_ptr += 1; |
8867 | break; | |
2dc7f7b3 | 8868 | case DW_FORM_flag_present: |
43988095 | 8869 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8870 | break; |
4bb7a0a7 DJ |
8871 | case DW_FORM_data2: |
8872 | case DW_FORM_ref2: | |
8fe0f950 | 8873 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8874 | info_ptr += 2; |
8875 | break; | |
8fe0f950 AT |
8876 | case DW_FORM_strx3: |
8877 | info_ptr += 3; | |
8878 | break; | |
4bb7a0a7 DJ |
8879 | case DW_FORM_data4: |
8880 | case DW_FORM_ref4: | |
8fe0f950 | 8881 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8882 | info_ptr += 4; |
8883 | break; | |
8884 | case DW_FORM_data8: | |
8885 | case DW_FORM_ref8: | |
55f1336d | 8886 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8887 | info_ptr += 8; |
8888 | break; | |
0224619f JK |
8889 | case DW_FORM_data16: |
8890 | info_ptr += 16; | |
8891 | break; | |
4bb7a0a7 | 8892 | case DW_FORM_string: |
9b1c24c8 | 8893 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8894 | info_ptr += bytes_read; |
8895 | break; | |
2dc7f7b3 | 8896 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8897 | case DW_FORM_strp: |
36586728 | 8898 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8899 | info_ptr += cu->header.offset_size; |
8900 | break; | |
2dc7f7b3 | 8901 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8902 | case DW_FORM_block: |
8903 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8904 | info_ptr += bytes_read; | |
8905 | break; | |
8906 | case DW_FORM_block1: | |
8907 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8908 | break; | |
8909 | case DW_FORM_block2: | |
8910 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8911 | break; | |
8912 | case DW_FORM_block4: | |
8913 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8914 | break; | |
336d760d | 8915 | case DW_FORM_addrx: |
cf532bd1 | 8916 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8917 | case DW_FORM_sdata: |
8918 | case DW_FORM_udata: | |
8919 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8920 | case DW_FORM_GNU_addr_index: |
8921 | case DW_FORM_GNU_str_index: | |
18a8505e | 8922 | case DW_FORM_rnglistx: |
41144253 | 8923 | case DW_FORM_loclistx: |
d521ce57 | 8924 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8925 | break; |
8926 | case DW_FORM_indirect: | |
8927 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8928 | info_ptr += bytes_read; | |
8929 | /* We need to continue parsing from here, so just go back to | |
8930 | the top. */ | |
8931 | goto skip_attribute; | |
8932 | ||
8933 | default: | |
3e43a32a MS |
8934 | error (_("Dwarf Error: Cannot handle %s " |
8935 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8936 | dwarf_form_name (form), |
8937 | bfd_get_filename (abfd)); | |
8938 | } | |
8939 | } | |
8940 | ||
8941 | if (abbrev->has_children) | |
dee91e82 | 8942 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8943 | else |
8944 | return info_ptr; | |
8945 | } | |
8946 | ||
93311388 | 8947 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8948 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8949 | |
d521ce57 | 8950 | static const gdb_byte * |
dee91e82 DE |
8951 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8952 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8953 | const gdb_byte *info_ptr) |
91c24f0a DC |
8954 | { |
8955 | /* Do we know the sibling already? */ | |
72bf9492 | 8956 | |
91c24f0a DC |
8957 | if (orig_pdi->sibling) |
8958 | return orig_pdi->sibling; | |
8959 | ||
8960 | /* Are there any children to deal with? */ | |
8961 | ||
8962 | if (!orig_pdi->has_children) | |
8963 | return info_ptr; | |
8964 | ||
4bb7a0a7 | 8965 | /* Skip the children the long way. */ |
91c24f0a | 8966 | |
dee91e82 | 8967 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8968 | } |
8969 | ||
257e7a09 | 8970 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8971 | not NULL. */ |
c906108c | 8972 | |
891813be TT |
8973 | void |
8974 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8975 | { |
976ca316 | 8976 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 8977 | |
976ca316 | 8978 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 8979 | |
077cbab2 TT |
8980 | /* If this psymtab is constructed from a debug-only objfile, the |
8981 | has_section_at_zero flag will not necessarily be correct. We | |
8982 | can get the correct value for this flag by looking at the data | |
8983 | associated with the (presumably stripped) associated objfile. */ | |
8984 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8985 | { |
976ca316 | 8986 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 8987 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 8988 | |
976ca316 SM |
8989 | per_objfile->per_bfd->has_section_at_zero |
8990 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 8991 | } |
98bfdba5 | 8992 | |
8566b89b | 8993 | expand_psymtab (objfile); |
95554aad | 8994 | |
976ca316 | 8995 | process_cu_includes (per_objfile); |
c906108c | 8996 | } |
9cdd5dbd DE |
8997 | \f |
8998 | /* Reading in full CUs. */ | |
c906108c | 8999 | |
10b3939b DJ |
9000 | /* Add PER_CU to the queue. */ |
9001 | ||
9002 | static void | |
120ce1b5 SM |
9003 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
9004 | dwarf2_per_objfile *per_objfile, | |
95554aad | 9005 | enum language pretend_language) |
10b3939b | 9006 | { |
10b3939b | 9007 | per_cu->queued = 1; |
120ce1b5 | 9008 | per_cu->per_bfd->queue.emplace (per_cu, per_objfile, pretend_language); |
10b3939b DJ |
9009 | } |
9010 | ||
89e63ee4 DE |
9011 | /* If PER_CU is not yet queued, add it to the queue. |
9012 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9013 | dependency. | |
0907af0c | 9014 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9015 | meaning either PER_CU is already queued or it is already loaded. |
9016 | ||
9017 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9018 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9019 | |
9020 | static int | |
89e63ee4 | 9021 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
9022 | dwarf2_per_cu_data *per_cu, |
9023 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
9024 | enum language pretend_language) |
9025 | { | |
9026 | /* We may arrive here during partial symbol reading, if we need full | |
9027 | DIEs to process an unusual case (e.g. template arguments). Do | |
9028 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 9029 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 9030 | { |
7188ed02 SM |
9031 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9032 | ||
9033 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
9034 | return 1; |
9035 | return 0; | |
9036 | } | |
9037 | ||
9038 | /* Mark the dependence relation so that we don't flush PER_CU | |
9039 | too early. */ | |
89e63ee4 DE |
9040 | if (dependent_cu != NULL) |
9041 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9042 | |
9043 | /* If it's already on the queue, we have nothing to do. */ | |
9044 | if (per_cu->queued) | |
9045 | return 0; | |
9046 | ||
9047 | /* If the compilation unit is already loaded, just mark it as | |
9048 | used. */ | |
7188ed02 SM |
9049 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9050 | if (cu != nullptr) | |
0907af0c | 9051 | { |
7188ed02 | 9052 | cu->last_used = 0; |
0907af0c DE |
9053 | return 0; |
9054 | } | |
9055 | ||
9056 | /* Add it to the queue. */ | |
120ce1b5 | 9057 | queue_comp_unit (per_cu, per_objfile, pretend_language); |
0907af0c DE |
9058 | |
9059 | return 1; | |
9060 | } | |
9061 | ||
10b3939b DJ |
9062 | /* Process the queue. */ |
9063 | ||
9064 | static void | |
976ca316 | 9065 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 9066 | { |
b4f54984 | 9067 | if (dwarf_read_debug) |
45cfd468 DE |
9068 | { |
9069 | fprintf_unfiltered (gdb_stdlog, | |
9070 | "Expanding one or more symtabs of objfile %s ...\n", | |
976ca316 | 9071 | objfile_name (per_objfile->objfile)); |
45cfd468 DE |
9072 | } |
9073 | ||
03dd20cc DJ |
9074 | /* The queue starts out with one item, but following a DIE reference |
9075 | may load a new CU, adding it to the end of the queue. */ | |
976ca316 | 9076 | while (!per_objfile->per_bfd->queue.empty ()) |
10b3939b | 9077 | { |
976ca316 | 9078 | dwarf2_queue_item &item = per_objfile->per_bfd->queue.front (); |
7188ed02 | 9079 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 9080 | |
976ca316 | 9081 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 9082 | { |
976ca316 | 9083 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 9084 | |
7188ed02 SM |
9085 | /* Skip dummy CUs. */ |
9086 | if (cu != nullptr) | |
73be47f5 | 9087 | { |
7188ed02 SM |
9088 | unsigned int debug_print_threshold; |
9089 | char buf[100]; | |
9090 | ||
9091 | if (per_cu->is_debug_types) | |
9092 | { | |
9093 | struct signatured_type *sig_type = | |
9094 | (struct signatured_type *) per_cu; | |
9095 | ||
9096 | sprintf (buf, "TU %s at offset %s", | |
9097 | hex_string (sig_type->signature), | |
9098 | sect_offset_str (per_cu->sect_off)); | |
9099 | /* There can be 100s of TUs. | |
9100 | Only print them in verbose mode. */ | |
9101 | debug_print_threshold = 2; | |
9102 | } | |
9103 | else | |
9104 | { | |
9105 | sprintf (buf, "CU at offset %s", | |
9106 | sect_offset_str (per_cu->sect_off)); | |
9107 | debug_print_threshold = 1; | |
9108 | } | |
247f5c4f | 9109 | |
7188ed02 SM |
9110 | if (dwarf_read_debug >= debug_print_threshold) |
9111 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); | |
f4dc4d17 | 9112 | |
7188ed02 SM |
9113 | if (per_cu->is_debug_types) |
9114 | process_full_type_unit (cu, item.pretend_language); | |
9115 | else | |
9116 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9117 | |
7188ed02 SM |
9118 | if (dwarf_read_debug >= debug_print_threshold) |
9119 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); | |
9120 | } | |
f4dc4d17 | 9121 | } |
10b3939b | 9122 | |
7188ed02 | 9123 | per_cu->queued = 0; |
976ca316 | 9124 | per_objfile->per_bfd->queue.pop (); |
10b3939b DJ |
9125 | } |
9126 | ||
b4f54984 | 9127 | if (dwarf_read_debug) |
45cfd468 DE |
9128 | { |
9129 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
976ca316 | 9130 | objfile_name (per_objfile->objfile)); |
45cfd468 | 9131 | } |
10b3939b DJ |
9132 | } |
9133 | ||
10b3939b DJ |
9134 | /* Read in full symbols for PST, and anything it depends on. */ |
9135 | ||
8566b89b TT |
9136 | void |
9137 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9138 | { |
af758d11 | 9139 | gdb_assert (!readin_p (objfile)); |
95554aad | 9140 | |
17ee85fc TT |
9141 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9142 | free_cached_comp_units freer (per_objfile); | |
48993951 | 9143 | expand_dependencies (objfile); |
aaa75496 | 9144 | |
97a1449a | 9145 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 9146 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9147 | } |
9148 | ||
af758d11 SM |
9149 | /* See psympriv.h. */ |
9150 | ||
9151 | bool | |
9152 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9153 | { | |
9154 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9155 | return per_objfile->symtab_set_p (per_cu_data); | |
9156 | } | |
9157 | ||
9158 | /* See psympriv.h. */ | |
9159 | ||
9160 | compunit_symtab * | |
9161 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9162 | { | |
9163 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9164 | return per_objfile->get_symtab (per_cu_data); | |
9165 | } | |
9166 | ||
dee91e82 DE |
9167 | /* Trivial hash function for die_info: the hash value of a DIE |
9168 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9169 | |
dee91e82 DE |
9170 | static hashval_t |
9171 | die_hash (const void *item) | |
10b3939b | 9172 | { |
9a3c8263 | 9173 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9174 | |
9c541725 | 9175 | return to_underlying (die->sect_off); |
dee91e82 | 9176 | } |
63d06c5c | 9177 | |
dee91e82 DE |
9178 | /* Trivial comparison function for die_info structures: two DIEs |
9179 | are equal if they have the same offset. */ | |
98bfdba5 | 9180 | |
dee91e82 DE |
9181 | static int |
9182 | die_eq (const void *item_lhs, const void *item_rhs) | |
9183 | { | |
9a3c8263 SM |
9184 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9185 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9186 | |
9c541725 | 9187 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9188 | } |
c906108c | 9189 | |
c0ab21c2 | 9190 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9191 | |
dee91e82 | 9192 | static void |
ab432490 SM |
9193 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9194 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 TT |
9195 | bool skip_partial, |
9196 | enum language pretend_language) | |
dee91e82 | 9197 | { |
c0ab21c2 TT |
9198 | gdb_assert (! this_cu->is_debug_types); |
9199 | ||
7188ed02 SM |
9200 | dwarf2_cu *existing_cu = per_objfile->get_cu (this_cu); |
9201 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); | |
c0ab21c2 TT |
9202 | if (reader.dummy_p) |
9203 | return; | |
9204 | ||
9205 | struct dwarf2_cu *cu = reader.cu; | |
9206 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9207 | |
dee91e82 DE |
9208 | gdb_assert (cu->die_hash == NULL); |
9209 | cu->die_hash = | |
9210 | htab_create_alloc_ex (cu->header.length / 12, | |
9211 | die_hash, | |
9212 | die_eq, | |
9213 | NULL, | |
9214 | &cu->comp_unit_obstack, | |
9215 | hashtab_obstack_allocate, | |
9216 | dummy_obstack_deallocate); | |
e142c38c | 9217 | |
3e225074 | 9218 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9219 | reader.comp_unit_die->child |
9220 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9221 | &info_ptr, reader.comp_unit_die); | |
9222 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9223 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9224 | |
9225 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9226 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9227 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9228 | or we won't be able to build types correctly. |
9229 | Similarly, if we do not read the producer, we can not apply | |
9230 | producer-specific interpretation. */ | |
c0ab21c2 | 9231 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9232 | |
9233 | reader.keep (); | |
10b3939b DJ |
9234 | } |
9235 | ||
3da10d80 KS |
9236 | /* Add a DIE to the delayed physname list. */ |
9237 | ||
9238 | static void | |
9239 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9240 | const char *name, struct die_info *die, | |
9241 | struct dwarf2_cu *cu) | |
9242 | { | |
9243 | struct delayed_method_info mi; | |
9244 | mi.type = type; | |
9245 | mi.fnfield_index = fnfield_index; | |
9246 | mi.index = index; | |
9247 | mi.name = name; | |
9248 | mi.die = die; | |
c89b44cd | 9249 | cu->method_list.push_back (mi); |
3da10d80 KS |
9250 | } |
9251 | ||
3693fdb3 PA |
9252 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9253 | "const" / "volatile". If so, decrements LEN by the length of the | |
9254 | modifier and return true. Otherwise return false. */ | |
9255 | ||
9256 | template<size_t N> | |
9257 | static bool | |
9258 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9259 | { | |
9260 | size_t mod_len = sizeof (mod) - 1; | |
9261 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9262 | { | |
9263 | len -= mod_len; | |
9264 | return true; | |
9265 | } | |
9266 | return false; | |
9267 | } | |
9268 | ||
3da10d80 KS |
9269 | /* Compute the physnames of any methods on the CU's method list. |
9270 | ||
9271 | The computation of method physnames is delayed in order to avoid the | |
9272 | (bad) condition that one of the method's formal parameters is of an as yet | |
9273 | incomplete type. */ | |
9274 | ||
9275 | static void | |
9276 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9277 | { | |
3693fdb3 | 9278 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9279 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9280 | return; |
9281 | gdb_assert (cu->language == language_cplus); | |
9282 | ||
52941706 | 9283 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9284 | { |
1d06ead6 | 9285 | const char *physname; |
3da10d80 | 9286 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9287 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9288 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9289 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9290 | = physname ? physname : ""; |
3693fdb3 PA |
9291 | |
9292 | /* Since there's no tag to indicate whether a method is a | |
9293 | const/volatile overload, extract that information out of the | |
9294 | demangled name. */ | |
9295 | if (physname != NULL) | |
9296 | { | |
9297 | size_t len = strlen (physname); | |
9298 | ||
9299 | while (1) | |
9300 | { | |
9301 | if (physname[len] == ')') /* shortcut */ | |
9302 | break; | |
9303 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9304 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9305 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9306 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9307 | else |
9308 | break; | |
9309 | } | |
9310 | } | |
3da10d80 | 9311 | } |
c89b44cd TT |
9312 | |
9313 | /* The list is no longer needed. */ | |
9314 | cu->method_list.clear (); | |
3da10d80 KS |
9315 | } |
9316 | ||
a766d390 DE |
9317 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9318 | and it's not clear if/how imported objects will appear. | |
9319 | To keep Go support simple until that's worked out, | |
9320 | go back through what we've read and create something usable. | |
9321 | We could do this while processing each DIE, and feels kinda cleaner, | |
9322 | but that way is more invasive. | |
9323 | This is to, for example, allow the user to type "p var" or "b main" | |
9324 | without having to specify the package name, and allow lookups | |
9325 | of module.object to work in contexts that use the expression | |
9326 | parser. */ | |
9327 | ||
9328 | static void | |
9329 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9330 | { | |
421d1616 | 9331 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9332 | struct pending *list; |
9333 | int i; | |
9334 | ||
c24bdb02 | 9335 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9336 | list != NULL; |
9337 | list = list->next) | |
a766d390 DE |
9338 | { |
9339 | for (i = 0; i < list->nsyms; ++i) | |
9340 | { | |
9341 | struct symbol *sym = list->symbol[i]; | |
9342 | ||
c1b5c1eb | 9343 | if (sym->language () == language_go |
a766d390 DE |
9344 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9345 | { | |
421d1616 TT |
9346 | gdb::unique_xmalloc_ptr<char> this_package_name |
9347 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9348 | |
9349 | if (this_package_name == NULL) | |
9350 | continue; | |
9351 | if (package_name == NULL) | |
421d1616 | 9352 | package_name = std::move (this_package_name); |
a766d390 DE |
9353 | else |
9354 | { | |
5e22e966 | 9355 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9356 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9357 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9358 | (symbol_symtab (sym) != NULL |
9359 | ? symtab_to_filename_for_display | |
9360 | (symbol_symtab (sym)) | |
e3b94546 | 9361 | : objfile_name (objfile)), |
421d1616 | 9362 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9363 | } |
9364 | } | |
9365 | } | |
9366 | } | |
9367 | ||
9368 | if (package_name != NULL) | |
9369 | { | |
5e22e966 | 9370 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9371 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9372 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9373 | saved_package_name); | |
a766d390 DE |
9374 | struct symbol *sym; |
9375 | ||
8c14c3a3 | 9376 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9377 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9378 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9379 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9380 | e.g., "main" finds the "main" module and not C's main(). */ | |
9381 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9382 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9383 | SYMBOL_TYPE (sym) = type; |
9384 | ||
c24bdb02 | 9385 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9386 | } |
9387 | } | |
9388 | ||
c9317f21 TT |
9389 | /* Allocate a fully-qualified name consisting of the two parts on the |
9390 | obstack. */ | |
9391 | ||
9392 | static const char * | |
9393 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9394 | { | |
9395 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9396 | } | |
9397 | ||
9c6a1327 TT |
9398 | /* A helper that allocates a variant part to attach to a Rust enum |
9399 | type. OBSTACK is where the results should be allocated. TYPE is | |
9400 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
9401 | discriminant. It must be the index of one of the fields of TYPE. | |
9402 | DEFAULT_INDEX is the index of the default field; or -1 if there is | |
9403 | no default. RANGES is indexed by "effective" field number (the | |
9404 | field index, but omitting the discriminant and default fields) and | |
9405 | must hold the discriminant values used by the variants. Note that | |
9406 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9407 | already allocated on it, or static. */ | |
c9317f21 | 9408 | |
9c6a1327 TT |
9409 | static void |
9410 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9411 | int discriminant_index, int default_index, | |
9412 | gdb::array_view<discriminant_range> ranges) | |
9413 | { | |
9414 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. Those | |
9415 | must be handled by the caller. */ | |
9416 | gdb_assert (discriminant_index >= 0 | |
1f704f76 | 9417 | && discriminant_index < type->num_fields ()); |
c9317f21 | 9418 | gdb_assert (default_index == -1 |
1f704f76 | 9419 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9420 | |
9c6a1327 | 9421 | /* We have one variant for each non-discriminant field. */ |
1f704f76 | 9422 | int n_variants = type->num_fields () - 1; |
c9317f21 | 9423 | |
9c6a1327 TT |
9424 | variant *variants = new (obstack) variant[n_variants]; |
9425 | int var_idx = 0; | |
9426 | int range_idx = 0; | |
1f704f76 | 9427 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9428 | { |
9429 | if (i == discriminant_index) | |
9430 | continue; | |
c9317f21 | 9431 | |
9c6a1327 TT |
9432 | variants[var_idx].first_field = i; |
9433 | variants[var_idx].last_field = i + 1; | |
9434 | ||
9435 | /* The default field does not need a range, but other fields do. | |
9436 | We skipped the discriminant above. */ | |
9437 | if (i != default_index) | |
9438 | { | |
9439 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9440 | ++range_idx; | |
9441 | } | |
c9317f21 | 9442 | |
9c6a1327 TT |
9443 | ++var_idx; |
9444 | } | |
9445 | ||
9446 | gdb_assert (range_idx == ranges.size ()); | |
9447 | gdb_assert (var_idx == n_variants); | |
9448 | ||
9449 | variant_part *part = new (obstack) variant_part; | |
9450 | part->discriminant_index = discriminant_index; | |
940da03e | 9451 | part->is_unsigned = TYPE_UNSIGNED (type->field (discriminant_index).type ()); |
9c6a1327 TT |
9452 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9453 | ||
9454 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9455 | gdb::array_view<variant_part> *prop_value | |
9456 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9457 | |
9c6a1327 TT |
9458 | struct dynamic_prop prop; |
9459 | prop.kind = PROP_VARIANT_PARTS; | |
9460 | prop.data.variant_parts = prop_value; | |
9461 | ||
5c54719c | 9462 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9463 | } |
9464 | ||
9465 | /* Some versions of rustc emitted enums in an unusual way. | |
9466 | ||
9467 | Ordinary enums were emitted as unions. The first element of each | |
9468 | structure in the union was named "RUST$ENUM$DISR". This element | |
9469 | held the discriminant. | |
9470 | ||
9471 | These versions of Rust also implemented the "non-zero" | |
9472 | optimization. When the enum had two values, and one is empty and | |
9473 | the other holds a pointer that cannot be zero, the pointer is used | |
9474 | as the discriminant, with a zero value meaning the empty variant. | |
9475 | Here, the union's first member is of the form | |
9476 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9477 | where the fieldnos are the indices of the fields that should be | |
9478 | traversed in order to find the field (which may be several fields deep) | |
9479 | and the variantname is the name of the variant of the case when the | |
9480 | field is zero. | |
9481 | ||
9482 | This function recognizes whether TYPE is of one of these forms, | |
9483 | and, if so, smashes it to be a variant type. */ | |
9484 | ||
9485 | static void | |
9486 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9487 | { | |
78134374 | 9488 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9489 | |
9490 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9491 | if (type->num_fields () == 0) |
c9317f21 TT |
9492 | return; |
9493 | ||
9494 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9495 | if (type->num_fields () == 1 |
c9317f21 TT |
9496 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9497 | { | |
9498 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9499 | ||
9500 | /* Decode the field name to find the offset of the | |
9501 | discriminant. */ | |
9502 | ULONGEST bit_offset = 0; | |
940da03e | 9503 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9504 | while (name[0] >= '0' && name[0] <= '9') |
9505 | { | |
9506 | char *tail; | |
9507 | unsigned long index = strtoul (name, &tail, 10); | |
9508 | name = tail; | |
9509 | if (*name != '$' | |
1f704f76 | 9510 | || index >= field_type->num_fields () |
c9317f21 TT |
9511 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9512 | != FIELD_LOC_KIND_BITPOS)) | |
9513 | { | |
b98664d3 | 9514 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9515 | "[in module %s]"), |
9516 | TYPE_FIELD_NAME (type, 0), | |
9517 | objfile_name (objfile)); | |
9518 | return; | |
9519 | } | |
9520 | ++name; | |
9521 | ||
9522 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9523 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9524 | } |
9525 | ||
9c6a1327 TT |
9526 | /* Smash this type to be a structure type. We have to do this |
9527 | because the type has already been recorded. */ | |
67607e24 | 9528 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9529 | type->set_num_fields (3); |
9c6a1327 | 9530 | /* Save the field we care about. */ |
ceacbf6e | 9531 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9532 | type->set_fields |
9533 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9534 | |
9c6a1327 | 9535 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9536 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9537 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9538 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9539 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9540 | |
9541 | /* The order of fields doesn't really matter, so put the real | |
9542 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9543 | type->field (1) = saved_field; |
9c6a1327 | 9544 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9545 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9546 | type->field (1).type ()->set_name | |
7d93a1e0 | 9547 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9548 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9549 | |
9550 | const char *dataless_name | |
7d93a1e0 | 9551 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9552 | name); |
9553 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9554 | dataless_name); | |
5d14b6e5 | 9555 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9556 | /* NAME points into the original discriminant name, which |
9557 | already has the correct lifetime. */ | |
9c6a1327 | 9558 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9559 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9560 | |
9c6a1327 TT |
9561 | /* Indicate that this is a variant type. */ |
9562 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9563 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9564 | } |
77c2dba3 TT |
9565 | /* A union with a single anonymous field is probably an old-style |
9566 | univariant enum. */ | |
1f704f76 | 9567 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9568 | { |
c9317f21 TT |
9569 | /* Smash this type to be a structure type. We have to do this |
9570 | because the type has already been recorded. */ | |
67607e24 | 9571 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9572 | |
940da03e | 9573 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9574 | const char *variant_name |
7d93a1e0 | 9575 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9576 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9577 | field_type->set_name |
9578 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9579 | type->name (), variant_name)); |
c9317f21 TT |
9580 | } |
9581 | else | |
9582 | { | |
9583 | struct type *disr_type = nullptr; | |
1f704f76 | 9584 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9585 | { |
940da03e | 9586 | disr_type = type->field (i).type (); |
c9317f21 | 9587 | |
78134374 | 9588 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9589 | { |
9590 | /* All fields of a true enum will be structs. */ | |
9591 | return; | |
9592 | } | |
1f704f76 | 9593 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9594 | { |
9595 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9596 | disr_type = nullptr; |
c9317f21 TT |
9597 | } |
9598 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9599 | "RUST$ENUM$DISR") != 0) | |
9600 | { | |
9601 | /* Not a Rust enum. */ | |
9602 | return; | |
9603 | } | |
9604 | else | |
9605 | { | |
9606 | /* Found one. */ | |
9607 | break; | |
9608 | } | |
9609 | } | |
9610 | ||
9611 | /* If we got here without a discriminant, then it's probably | |
9612 | just a union. */ | |
9613 | if (disr_type == nullptr) | |
9614 | return; | |
9615 | ||
9616 | /* Smash this type to be a structure type. We have to do this | |
9617 | because the type has already been recorded. */ | |
67607e24 | 9618 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9619 | |
9c6a1327 | 9620 | /* Make space for the discriminant field. */ |
ceacbf6e | 9621 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9622 | field *new_fields |
1f704f76 | 9623 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9624 | * sizeof (struct field))); |
80fc5e77 | 9625 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9626 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9627 | type->set_fields (new_fields); |
1f704f76 | 9628 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9629 | |
9630 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9631 | type->field (0) = *disr_field; |
9c6a1327 TT |
9632 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9633 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9634 | |
9635 | /* We need a way to find the correct discriminant given a | |
9636 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9637 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9638 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9639 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9640 | { |
9641 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9642 | { | |
9643 | const char *name | |
9644 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9645 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9646 | } | |
9647 | } | |
9648 | ||
1f704f76 | 9649 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9650 | /* We don't need a range entry for the discriminant, but we do |
9651 | need one for every other field, as there is no default | |
9652 | variant. */ | |
9653 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9654 | discriminant_range, | |
9655 | n_fields - 1); | |
c9317f21 TT |
9656 | /* Skip the discriminant here. */ |
9657 | for (int i = 1; i < n_fields; ++i) | |
9658 | { | |
9659 | /* Find the final word in the name of this variant's type. | |
9660 | That name can be used to look up the correct | |
9661 | discriminant. */ | |
9662 | const char *variant_name | |
940da03e | 9663 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9664 | |
9665 | auto iter = discriminant_map.find (variant_name); | |
9666 | if (iter != discriminant_map.end ()) | |
9c6a1327 TT |
9667 | { |
9668 | ranges[i].low = iter->second; | |
9669 | ranges[i].high = iter->second; | |
9670 | } | |
c9317f21 | 9671 | |
bedda9ac | 9672 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9673 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9674 | if (sub_type->num_fields () > 0) |
bedda9ac | 9675 | { |
5e33d5f4 | 9676 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9677 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9678 | } |
9c6a1327 | 9679 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9680 | sub_type->set_name |
9681 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9682 | type->name (), variant_name)); |
c9317f21 | 9683 | } |
9c6a1327 TT |
9684 | |
9685 | /* Indicate that this is a variant type. */ | |
9686 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, | |
9687 | gdb::array_view<discriminant_range> (ranges, | |
9688 | n_fields - 1)); | |
c9317f21 TT |
9689 | } |
9690 | } | |
9691 | ||
9692 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9693 | ||
9694 | static void | |
9695 | rust_union_quirks (struct dwarf2_cu *cu) | |
9696 | { | |
9697 | gdb_assert (cu->language == language_rust); | |
52941706 | 9698 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9699 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9700 | /* We don't need this any more. */ |
9701 | cu->rust_unions.clear (); | |
c9317f21 TT |
9702 | } |
9703 | ||
8adb8487 TT |
9704 | /* See read.h. */ |
9705 | ||
9706 | type_unit_group_unshareable * | |
9707 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9708 | { | |
9709 | auto iter = this->m_type_units.find (tu_group); | |
9710 | if (iter != this->m_type_units.end ()) | |
9711 | return iter->second.get (); | |
9712 | ||
9713 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9714 | type_unit_group_unshareable *result = uniq.get (); | |
9715 | this->m_type_units[tu_group] = std::move (uniq); | |
9716 | return result; | |
9717 | } | |
9718 | ||
e286671b TT |
9719 | struct type * |
9720 | dwarf2_per_objfile::get_type_for_signatured_type | |
9721 | (signatured_type *sig_type) const | |
9722 | { | |
9723 | auto iter = this->m_type_map.find (sig_type); | |
9724 | if (iter == this->m_type_map.end ()) | |
9725 | return nullptr; | |
9726 | ||
9727 | return iter->second; | |
9728 | } | |
9729 | ||
9730 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9731 | (signatured_type *sig_type, struct type *type) | |
9732 | { | |
9733 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9734 | ||
9735 | this->m_type_map[sig_type] = type; | |
9736 | } | |
9737 | ||
95554aad TT |
9738 | /* A helper function for computing the list of all symbol tables |
9739 | included by PER_CU. */ | |
9740 | ||
9741 | static void | |
4c39bc03 | 9742 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9743 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9744 | dwarf2_per_cu_data *per_cu, |
9745 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9746 | struct compunit_symtab *immediate_parent) |
95554aad | 9747 | { |
af758d11 | 9748 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9749 | if (*slot != NULL) |
9750 | { | |
9751 | /* This inclusion and its children have been processed. */ | |
9752 | return; | |
9753 | } | |
9754 | ||
9755 | *slot = per_cu; | |
af758d11 | 9756 | |
95554aad | 9757 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9758 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9759 | if (cust != NULL) |
ec94af83 DE |
9760 | { |
9761 | /* If this is a type unit only add its symbol table if we haven't | |
9762 | seen it yet (type unit per_cu's can share symtabs). */ | |
9763 | if (per_cu->is_debug_types) | |
9764 | { | |
43f3e411 | 9765 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9766 | if (*slot == NULL) |
9767 | { | |
43f3e411 | 9768 | *slot = cust; |
4c39bc03 | 9769 | result->push_back (cust); |
43f3e411 DE |
9770 | if (cust->user == NULL) |
9771 | cust->user = immediate_parent; | |
ec94af83 DE |
9772 | } |
9773 | } | |
9774 | else | |
f9125b6c | 9775 | { |
4c39bc03 | 9776 | result->push_back (cust); |
43f3e411 DE |
9777 | if (cust->user == NULL) |
9778 | cust->user = immediate_parent; | |
f9125b6c | 9779 | } |
ec94af83 | 9780 | } |
95554aad | 9781 | |
ae640021 AB |
9782 | if (!per_cu->imported_symtabs_empty ()) |
9783 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9784 | { | |
9785 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9786 | all_type_symtabs, ptr, per_objfile, |
9787 | cust); | |
ae640021 | 9788 | } |
95554aad TT |
9789 | } |
9790 | ||
43f3e411 | 9791 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9792 | PER_CU. */ |
9793 | ||
9794 | static void | |
43182c09 SM |
9795 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9796 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9797 | { |
f4dc4d17 DE |
9798 | gdb_assert (! per_cu->is_debug_types); |
9799 | ||
ae640021 | 9800 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9801 | { |
ae640021 | 9802 | int len; |
4c39bc03 | 9803 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9804 | htab_t all_children, all_type_symtabs; |
43182c09 | 9805 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9806 | |
9807 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9808 | if (cust == NULL) |
95554aad TT |
9809 | return; |
9810 | ||
9811 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9812 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9813 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9814 | NULL, xcalloc, xfree); | |
95554aad | 9815 | |
ae640021 | 9816 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9817 | { |
9818 | recursively_compute_inclusions (&result_symtabs, all_children, | |
43182c09 SM |
9819 | all_type_symtabs, ptr, per_objfile, |
9820 | cust); | |
ec94af83 | 9821 | } |
95554aad | 9822 | |
ec94af83 | 9823 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9824 | len = result_symtabs.size (); |
43f3e411 | 9825 | cust->includes |
f6e649dd | 9826 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9827 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9828 | memcpy (cust->includes, result_symtabs.data (), |
9829 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9830 | cust->includes[len] = NULL; |
95554aad | 9831 | |
95554aad | 9832 | htab_delete (all_children); |
ec94af83 | 9833 | htab_delete (all_type_symtabs); |
95554aad TT |
9834 | } |
9835 | } | |
9836 | ||
9837 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9838 | read. */ | |
9839 | ||
9840 | static void | |
976ca316 | 9841 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9842 | { |
976ca316 | 9843 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9844 | { |
9845 | if (! iter->is_debug_types) | |
976ca316 | 9846 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 9847 | } |
95554aad | 9848 | |
976ca316 | 9849 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9850 | } |
9851 | ||
8fc0b21d | 9852 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9853 | already been loaded into memory. */ |
9854 | ||
9855 | static void | |
8fc0b21d | 9856 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 9857 | { |
976ca316 SM |
9858 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9859 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 9860 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9861 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9862 | struct compunit_symtab *cust; |
10b3939b | 9863 | CORE_ADDR baseaddr; |
4359dff1 | 9864 | struct block *static_block; |
3e29f34a | 9865 | CORE_ADDR addr; |
10b3939b | 9866 | |
b3b3bada | 9867 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9868 | |
c89b44cd TT |
9869 | /* Clear the list here in case something was left over. */ |
9870 | cu->method_list.clear (); | |
10b3939b | 9871 | |
95554aad TT |
9872 | cu->language = pretend_language; |
9873 | cu->language_defn = language_def (cu->language); | |
9874 | ||
c906108c | 9875 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9876 | process_die (cu->dies, cu); |
c906108c | 9877 | |
a766d390 DE |
9878 | /* For now fudge the Go package. */ |
9879 | if (cu->language == language_go) | |
9880 | fixup_go_packaging (cu); | |
9881 | ||
5f48f8f3 | 9882 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9883 | should be complete, and it should now be safe to compute all of the |
9884 | physnames. */ | |
9885 | compute_delayed_physnames (cu); | |
3da10d80 | 9886 | |
c9317f21 TT |
9887 | if (cu->language == language_rust) |
9888 | rust_union_quirks (cu); | |
9889 | ||
fae299cd DC |
9890 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9891 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9892 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9893 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9894 | |
3e29f34a | 9895 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9896 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9897 | |
9898 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9899 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9900 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9901 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9902 | this comp unit. */ | |
9903 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9904 | ||
c24bdb02 | 9905 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9906 | SECT_OFF_TEXT (objfile), |
9907 | 0); | |
c906108c | 9908 | |
43f3e411 | 9909 | if (cust != NULL) |
c906108c | 9910 | { |
df15bd07 | 9911 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9912 | |
8be455d7 JK |
9913 | /* Set symtab language to language from DW_AT_language. If the |
9914 | compilation is from a C file generated by language preprocessors, do | |
9915 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9916 | if (!(cu->language == language_c |
40e3ad0e | 9917 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9918 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9919 | |
9920 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9921 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9922 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9923 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9924 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9925 | |
9926 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9927 | needed, it would be wrong due to missing DW_AT_producer there. | |
9928 | ||
9929 | Still one can confuse GDB by using non-standard GCC compilation | |
9930 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9931 | */ |
ab260dad | 9932 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9933 | cust->locations_valid = 1; |
e0d00bc7 JK |
9934 | |
9935 | if (gcc_4_minor >= 5) | |
43f3e411 | 9936 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9937 | |
43f3e411 | 9938 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9939 | } |
9291a0cd | 9940 | |
976ca316 | 9941 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 9942 | |
95554aad | 9943 | /* Push it for inclusion processing later. */ |
976ca316 | 9944 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
9945 | |
9946 | /* Not needed any more. */ | |
c24bdb02 | 9947 | cu->reset_builder (); |
f4dc4d17 | 9948 | } |
45cfd468 | 9949 | |
8fc0b21d | 9950 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
9951 | already been loaded into memory. */ |
9952 | ||
9953 | static void | |
8fc0b21d | 9954 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
9955 | enum language pretend_language) |
9956 | { | |
976ca316 SM |
9957 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9958 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 9959 | struct compunit_symtab *cust; |
0186c6a7 DE |
9960 | struct signatured_type *sig_type; |
9961 | ||
8fc0b21d SM |
9962 | gdb_assert (cu->per_cu->is_debug_types); |
9963 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 9964 | |
c89b44cd TT |
9965 | /* Clear the list here in case something was left over. */ |
9966 | cu->method_list.clear (); | |
f4dc4d17 | 9967 | |
f4dc4d17 DE |
9968 | cu->language = pretend_language; |
9969 | cu->language_defn = language_def (cu->language); | |
9970 | ||
9971 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9972 | process_die (cu->dies, cu); | |
9973 | ||
9974 | /* For now fudge the Go package. */ | |
9975 | if (cu->language == language_go) | |
9976 | fixup_go_packaging (cu); | |
9977 | ||
5f48f8f3 | 9978 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9979 | should be complete, and it should now be safe to compute all of the |
9980 | physnames. */ | |
9981 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9982 | |
c9317f21 TT |
9983 | if (cu->language == language_rust) |
9984 | rust_union_quirks (cu); | |
9985 | ||
f4dc4d17 DE |
9986 | /* TUs share symbol tables. |
9987 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9988 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9989 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 9990 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 9991 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 9992 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 9993 | { |
c24bdb02 KS |
9994 | buildsym_compunit *builder = cu->get_builder (); |
9995 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 9996 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 9997 | |
43f3e411 | 9998 | if (cust != NULL) |
f4dc4d17 DE |
9999 | { |
10000 | /* Set symtab language to language from DW_AT_language. If the | |
10001 | compilation is from a C file generated by language preprocessors, | |
10002 | do not set the language if it was already deduced by | |
10003 | start_subfile. */ | |
43f3e411 DE |
10004 | if (!(cu->language == language_c |
10005 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10006 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10007 | } |
10008 | } | |
10009 | else | |
10010 | { | |
c24bdb02 | 10011 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 10012 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
10013 | } |
10014 | ||
976ca316 | 10015 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
10016 | |
10017 | /* Not needed any more. */ | |
c24bdb02 | 10018 | cu->reset_builder (); |
c906108c SS |
10019 | } |
10020 | ||
95554aad TT |
10021 | /* Process an imported unit DIE. */ |
10022 | ||
10023 | static void | |
10024 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10025 | { | |
10026 | struct attribute *attr; | |
10027 | ||
f4dc4d17 DE |
10028 | /* For now we don't handle imported units in type units. */ |
10029 | if (cu->per_cu->is_debug_types) | |
10030 | { | |
10031 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10032 | " supported in type units [in module %s]"), | |
5e22e966 | 10033 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
10034 | } |
10035 | ||
95554aad TT |
10036 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10037 | if (attr != NULL) | |
10038 | { | |
0826b30a | 10039 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 10040 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 10041 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 10042 | dwarf2_per_cu_data *per_cu |
ab432490 | 10043 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 10044 | |
58990295 TV |
10045 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
10046 | into another compilation unit, at root level. Regard this as a hint, | |
10047 | and ignore it. */ | |
10048 | if (die->parent && die->parent->parent == NULL | |
10049 | && per_cu->unit_type == DW_UT_compile | |
10050 | && per_cu->lang == language_cplus) | |
10051 | return; | |
10052 | ||
69d751e3 | 10053 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 10054 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
ab432490 | 10055 | load_full_comp_unit (per_cu, per_objfile, false, cu->language); |
95554aad | 10056 | |
ae640021 | 10057 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10058 | } |
10059 | } | |
10060 | ||
4c8aa72d PA |
10061 | /* RAII object that represents a process_die scope: i.e., |
10062 | starts/finishes processing a DIE. */ | |
10063 | class process_die_scope | |
adde2bff | 10064 | { |
4c8aa72d PA |
10065 | public: |
10066 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10067 | : m_die (die), m_cu (cu) | |
10068 | { | |
10069 | /* We should only be processing DIEs not already in process. */ | |
10070 | gdb_assert (!m_die->in_process); | |
10071 | m_die->in_process = true; | |
10072 | } | |
8c3cb9fa | 10073 | |
4c8aa72d PA |
10074 | ~process_die_scope () |
10075 | { | |
10076 | m_die->in_process = false; | |
10077 | ||
10078 | /* If we're done processing the DIE for the CU that owns the line | |
10079 | header, we don't need the line header anymore. */ | |
10080 | if (m_cu->line_header_die_owner == m_die) | |
10081 | { | |
10082 | delete m_cu->line_header; | |
10083 | m_cu->line_header = NULL; | |
10084 | m_cu->line_header_die_owner = NULL; | |
10085 | } | |
10086 | } | |
10087 | ||
10088 | private: | |
10089 | die_info *m_die; | |
10090 | dwarf2_cu *m_cu; | |
10091 | }; | |
adde2bff | 10092 | |
c906108c SS |
10093 | /* Process a die and its children. */ |
10094 | ||
10095 | static void | |
e7c27a73 | 10096 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10097 | { |
4c8aa72d | 10098 | process_die_scope scope (die, cu); |
adde2bff | 10099 | |
c906108c SS |
10100 | switch (die->tag) |
10101 | { | |
10102 | case DW_TAG_padding: | |
10103 | break; | |
10104 | case DW_TAG_compile_unit: | |
95554aad | 10105 | case DW_TAG_partial_unit: |
e7c27a73 | 10106 | read_file_scope (die, cu); |
c906108c | 10107 | break; |
348e048f DE |
10108 | case DW_TAG_type_unit: |
10109 | read_type_unit_scope (die, cu); | |
10110 | break; | |
c906108c | 10111 | case DW_TAG_subprogram: |
0a4b0913 AB |
10112 | /* Nested subprograms in Fortran get a prefix. */ |
10113 | if (cu->language == language_fortran | |
10114 | && die->parent != NULL | |
10115 | && die->parent->tag == DW_TAG_subprogram) | |
10116 | cu->processing_has_namespace_info = true; | |
10117 | /* Fall through. */ | |
c906108c | 10118 | case DW_TAG_inlined_subroutine: |
edb3359d | 10119 | read_func_scope (die, cu); |
c906108c SS |
10120 | break; |
10121 | case DW_TAG_lexical_block: | |
14898363 L |
10122 | case DW_TAG_try_block: |
10123 | case DW_TAG_catch_block: | |
e7c27a73 | 10124 | read_lexical_block_scope (die, cu); |
c906108c | 10125 | break; |
216f72a1 | 10126 | case DW_TAG_call_site: |
96408a79 SA |
10127 | case DW_TAG_GNU_call_site: |
10128 | read_call_site_scope (die, cu); | |
10129 | break; | |
c906108c | 10130 | case DW_TAG_class_type: |
680b30c7 | 10131 | case DW_TAG_interface_type: |
c906108c SS |
10132 | case DW_TAG_structure_type: |
10133 | case DW_TAG_union_type: | |
134d01f1 | 10134 | process_structure_scope (die, cu); |
c906108c SS |
10135 | break; |
10136 | case DW_TAG_enumeration_type: | |
134d01f1 | 10137 | process_enumeration_scope (die, cu); |
c906108c | 10138 | break; |
134d01f1 | 10139 | |
f792889a DJ |
10140 | /* These dies have a type, but processing them does not create |
10141 | a symbol or recurse to process the children. Therefore we can | |
10142 | read them on-demand through read_type_die. */ | |
c906108c | 10143 | case DW_TAG_subroutine_type: |
72019c9c | 10144 | case DW_TAG_set_type: |
c906108c | 10145 | case DW_TAG_array_type: |
c906108c | 10146 | case DW_TAG_pointer_type: |
c906108c | 10147 | case DW_TAG_ptr_to_member_type: |
c906108c | 10148 | case DW_TAG_reference_type: |
4297a3f0 | 10149 | case DW_TAG_rvalue_reference_type: |
c906108c | 10150 | case DW_TAG_string_type: |
c906108c | 10151 | break; |
134d01f1 | 10152 | |
c906108c | 10153 | case DW_TAG_base_type: |
a02abb62 | 10154 | case DW_TAG_subrange_type: |
cb249c71 | 10155 | case DW_TAG_typedef: |
134d01f1 DJ |
10156 | /* Add a typedef symbol for the type definition, if it has a |
10157 | DW_AT_name. */ | |
f792889a | 10158 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10159 | break; |
c906108c | 10160 | case DW_TAG_common_block: |
e7c27a73 | 10161 | read_common_block (die, cu); |
c906108c SS |
10162 | break; |
10163 | case DW_TAG_common_inclusion: | |
10164 | break; | |
d9fa45fe | 10165 | case DW_TAG_namespace: |
9068261f | 10166 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10167 | read_namespace (die, cu); |
d9fa45fe | 10168 | break; |
5d7cb8df | 10169 | case DW_TAG_module: |
9068261f | 10170 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10171 | read_module (die, cu); |
10172 | break; | |
d9fa45fe | 10173 | case DW_TAG_imported_declaration: |
9068261f | 10174 | cu->processing_has_namespace_info = true; |
74921315 KS |
10175 | if (read_namespace_alias (die, cu)) |
10176 | break; | |
86a73007 TT |
10177 | /* The declaration is not a global namespace alias. */ |
10178 | /* Fall through. */ | |
d9fa45fe | 10179 | case DW_TAG_imported_module: |
9068261f | 10180 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10181 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10182 | || cu->language != language_fortran)) | |
b98664d3 | 10183 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10184 | dwarf_tag_name (die->tag)); |
10185 | read_import_statement (die, cu); | |
d9fa45fe | 10186 | break; |
95554aad TT |
10187 | |
10188 | case DW_TAG_imported_unit: | |
10189 | process_imported_unit_die (die, cu); | |
10190 | break; | |
10191 | ||
71a3c369 TT |
10192 | case DW_TAG_variable: |
10193 | read_variable (die, cu); | |
10194 | break; | |
10195 | ||
c906108c | 10196 | default: |
e7c27a73 | 10197 | new_symbol (die, NULL, cu); |
c906108c SS |
10198 | break; |
10199 | } | |
10200 | } | |
ca69b9e6 DE |
10201 | \f |
10202 | /* DWARF name computation. */ | |
c906108c | 10203 | |
94af9270 KS |
10204 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10205 | needs to have the name of the scope prepended to the name listed in the | |
10206 | die. */ | |
10207 | ||
10208 | static int | |
10209 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10210 | { | |
1c809c68 TT |
10211 | struct attribute *attr; |
10212 | ||
94af9270 KS |
10213 | switch (die->tag) |
10214 | { | |
10215 | case DW_TAG_namespace: | |
10216 | case DW_TAG_typedef: | |
10217 | case DW_TAG_class_type: | |
10218 | case DW_TAG_interface_type: | |
10219 | case DW_TAG_structure_type: | |
10220 | case DW_TAG_union_type: | |
10221 | case DW_TAG_enumeration_type: | |
10222 | case DW_TAG_enumerator: | |
10223 | case DW_TAG_subprogram: | |
08a76f8a | 10224 | case DW_TAG_inlined_subroutine: |
94af9270 | 10225 | case DW_TAG_member: |
74921315 | 10226 | case DW_TAG_imported_declaration: |
94af9270 KS |
10227 | return 1; |
10228 | ||
10229 | case DW_TAG_variable: | |
c2b0a229 | 10230 | case DW_TAG_constant: |
94af9270 KS |
10231 | /* We only need to prefix "globally" visible variables. These include |
10232 | any variable marked with DW_AT_external or any variable that | |
10233 | lives in a namespace. [Variables in anonymous namespaces | |
10234 | require prefixing, but they are not DW_AT_external.] */ | |
10235 | ||
10236 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10237 | { | |
10238 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10239 | |
94af9270 KS |
10240 | return die_needs_namespace (die_specification (die, &spec_cu), |
10241 | spec_cu); | |
10242 | } | |
10243 | ||
1c809c68 | 10244 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10245 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10246 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10247 | return 0; |
10248 | /* A variable in a lexical block of some kind does not need a | |
10249 | namespace, even though in C++ such variables may be external | |
10250 | and have a mangled name. */ | |
10251 | if (die->parent->tag == DW_TAG_lexical_block | |
10252 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10253 | || die->parent->tag == DW_TAG_catch_block |
10254 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10255 | return 0; |
10256 | return 1; | |
94af9270 KS |
10257 | |
10258 | default: | |
10259 | return 0; | |
10260 | } | |
10261 | } | |
10262 | ||
73b9be8b KS |
10263 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10264 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10265 | defined for the given DIE. */ | |
10266 | ||
10267 | static struct attribute * | |
10268 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10269 | { | |
10270 | struct attribute *attr; | |
10271 | ||
10272 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10273 | if (attr == NULL) | |
10274 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10275 | ||
10276 | return attr; | |
10277 | } | |
10278 | ||
10279 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10280 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10281 | defined for the given DIE. */ | |
10282 | ||
10283 | static const char * | |
10284 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10285 | { | |
10286 | const char *linkage_name; | |
10287 | ||
10288 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10289 | if (linkage_name == NULL) | |
10290 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10291 | ||
787de330 TT |
10292 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10293 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10294 | if (cu->language == language_rust && linkage_name != NULL | |
10295 | && strchr (linkage_name, '{') != NULL) | |
10296 | linkage_name = NULL; | |
10297 | ||
73b9be8b KS |
10298 | return linkage_name; |
10299 | } | |
10300 | ||
94af9270 | 10301 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10302 | compute the physname for the object, which include a method's: |
9c37b5ae | 10303 | - formal parameters (C++), |
a766d390 | 10304 | - receiver type (Go), |
a766d390 DE |
10305 | |
10306 | The term "physname" is a bit confusing. | |
10307 | For C++, for example, it is the demangled name. | |
10308 | For Go, for example, it's the mangled name. | |
94af9270 | 10309 | |
af6b7be1 JB |
10310 | For Ada, return the DIE's linkage name rather than the fully qualified |
10311 | name. PHYSNAME is ignored.. | |
10312 | ||
5989a64e | 10313 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10314 | canonicalized. */ |
94af9270 KS |
10315 | |
10316 | static const char * | |
15d034d0 TT |
10317 | dwarf2_compute_name (const char *name, |
10318 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10319 | int physname) |
10320 | { | |
5e22e966 | 10321 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10322 | |
94af9270 KS |
10323 | if (name == NULL) |
10324 | name = dwarf2_name (die, cu); | |
10325 | ||
2ee7123e DE |
10326 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10327 | but otherwise compute it by typename_concat inside GDB. | |
10328 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10329 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10330 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10331 | will set the demangled name to the result of dwarf2_full_name, and it is |
10332 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10333 | if (cu->language == language_ada |
10334 | || (cu->language == language_fortran && physname)) | |
10335 | { | |
10336 | /* For Ada unit, we prefer the linkage name over the name, as | |
10337 | the former contains the exported name, which the user expects | |
10338 | to be able to reference. Ideally, we want the user to be able | |
10339 | to reference this entity using either natural or linkage name, | |
10340 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10341 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10342 | |
2ee7123e DE |
10343 | if (linkage_name != NULL) |
10344 | return linkage_name; | |
f55ee35c JK |
10345 | } |
10346 | ||
94af9270 KS |
10347 | /* These are the only languages we know how to qualify names in. */ |
10348 | if (name != NULL | |
9c37b5ae | 10349 | && (cu->language == language_cplus |
c44af4eb TT |
10350 | || cu->language == language_fortran || cu->language == language_d |
10351 | || cu->language == language_rust)) | |
94af9270 KS |
10352 | { |
10353 | if (die_needs_namespace (die, cu)) | |
10354 | { | |
0d5cff50 | 10355 | const char *prefix; |
34a68019 | 10356 | const char *canonical_name = NULL; |
94af9270 | 10357 | |
d7e74731 PA |
10358 | string_file buf; |
10359 | ||
94af9270 | 10360 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10361 | if (*prefix != '\0') |
10362 | { | |
43816ebc TT |
10363 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10364 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10365 | |
43816ebc | 10366 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10367 | } |
10368 | else | |
d7e74731 | 10369 | buf.puts (name); |
94af9270 | 10370 | |
98bfdba5 PA |
10371 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10372 | as children with DW_TAG_template_type_param or | |
10373 | DW_TAG_value_type_param. If the latter, add them to the name | |
10374 | here. If the name already has template parameters, then | |
10375 | skip this step; some versions of GCC emit both, and | |
10376 | it is more efficient to use the pre-computed name. | |
10377 | ||
10378 | Something to keep in mind about this process: it is very | |
10379 | unlikely, or in some cases downright impossible, to produce | |
10380 | something that will match the mangled name of a function. | |
10381 | If the definition of the function has the same debug info, | |
10382 | we should be able to match up with it anyway. But fallbacks | |
10383 | using the minimal symbol, for instance to find a method | |
10384 | implemented in a stripped copy of libstdc++, will not work. | |
10385 | If we do not have debug info for the definition, we will have to | |
10386 | match them up some other way. | |
10387 | ||
10388 | When we do name matching there is a related problem with function | |
10389 | templates; two instantiated function templates are allowed to | |
10390 | differ only by their return types, which we do not add here. */ | |
10391 | ||
10392 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10393 | { | |
10394 | struct attribute *attr; | |
10395 | struct die_info *child; | |
10396 | int first = 1; | |
10397 | ||
10398 | die->building_fullname = 1; | |
10399 | ||
10400 | for (child = die->child; child != NULL; child = child->sibling) | |
10401 | { | |
10402 | struct type *type; | |
12df843f | 10403 | LONGEST value; |
d521ce57 | 10404 | const gdb_byte *bytes; |
98bfdba5 PA |
10405 | struct dwarf2_locexpr_baton *baton; |
10406 | struct value *v; | |
10407 | ||
10408 | if (child->tag != DW_TAG_template_type_param | |
10409 | && child->tag != DW_TAG_template_value_param) | |
10410 | continue; | |
10411 | ||
10412 | if (first) | |
10413 | { | |
d7e74731 | 10414 | buf.puts ("<"); |
98bfdba5 PA |
10415 | first = 0; |
10416 | } | |
10417 | else | |
d7e74731 | 10418 | buf.puts (", "); |
98bfdba5 PA |
10419 | |
10420 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10421 | if (attr == NULL) | |
10422 | { | |
b98664d3 | 10423 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10424 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10425 | continue; |
10426 | } | |
10427 | type = die_type (child, cu); | |
10428 | ||
10429 | if (child->tag == DW_TAG_template_type_param) | |
10430 | { | |
c1ec8cea TT |
10431 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10432 | &type_print_raw_options); | |
98bfdba5 PA |
10433 | continue; |
10434 | } | |
10435 | ||
10436 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10437 | if (attr == NULL) | |
10438 | { | |
b98664d3 | 10439 | complaint (_("template parameter missing " |
3e43a32a | 10440 | "DW_AT_const_value")); |
d7e74731 | 10441 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10442 | continue; |
10443 | } | |
10444 | ||
10445 | dwarf2_const_value_attr (attr, type, name, | |
10446 | &cu->comp_unit_obstack, cu, | |
10447 | &value, &bytes, &baton); | |
10448 | ||
10449 | if (TYPE_NOSIGN (type)) | |
10450 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10451 | changed, this can use value_print instead. */ | |
d7e74731 | 10452 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10453 | else |
10454 | { | |
10455 | struct value_print_options opts; | |
10456 | ||
10457 | if (baton != NULL) | |
10458 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10459 | baton->data, | |
10460 | baton->size, | |
9f47c707 SM |
10461 | baton->per_cu, |
10462 | baton->per_objfile); | |
98bfdba5 PA |
10463 | else if (bytes != NULL) |
10464 | { | |
10465 | v = allocate_value (type); | |
10466 | memcpy (value_contents_writeable (v), bytes, | |
10467 | TYPE_LENGTH (type)); | |
10468 | } | |
10469 | else | |
10470 | v = value_from_longest (type, value); | |
10471 | ||
3e43a32a MS |
10472 | /* Specify decimal so that we do not depend on |
10473 | the radix. */ | |
98bfdba5 PA |
10474 | get_formatted_print_options (&opts, 'd'); |
10475 | opts.raw = 1; | |
d7e74731 | 10476 | value_print (v, &buf, &opts); |
98bfdba5 | 10477 | release_value (v); |
98bfdba5 PA |
10478 | } |
10479 | } | |
10480 | ||
10481 | die->building_fullname = 0; | |
10482 | ||
10483 | if (!first) | |
10484 | { | |
10485 | /* Close the argument list, with a space if necessary | |
10486 | (nested templates). */ | |
d7e74731 PA |
10487 | if (!buf.empty () && buf.string ().back () == '>') |
10488 | buf.puts (" >"); | |
98bfdba5 | 10489 | else |
d7e74731 | 10490 | buf.puts (">"); |
98bfdba5 PA |
10491 | } |
10492 | } | |
10493 | ||
9c37b5ae | 10494 | /* For C++ methods, append formal parameter type |
94af9270 | 10495 | information, if PHYSNAME. */ |
6e70227d | 10496 | |
94af9270 | 10497 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10498 | && cu->language == language_cplus) |
94af9270 KS |
10499 | { |
10500 | struct type *type = read_type_die (die, cu); | |
10501 | ||
d7e74731 | 10502 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10503 | &type_print_raw_options); |
94af9270 | 10504 | |
9c37b5ae | 10505 | if (cu->language == language_cplus) |
94af9270 | 10506 | { |
60430eff DJ |
10507 | /* Assume that an artificial first parameter is |
10508 | "this", but do not crash if it is not. RealView | |
10509 | marks unnamed (and thus unused) parameters as | |
10510 | artificial; there is no way to differentiate | |
10511 | the two cases. */ | |
1f704f76 | 10512 | if (type->num_fields () > 0 |
94af9270 | 10513 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10514 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10515 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10516 | buf.puts (" const"); |
94af9270 KS |
10517 | } |
10518 | } | |
10519 | ||
d7e74731 | 10520 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10521 | |
10522 | if (cu->language == language_cplus) | |
34a68019 | 10523 | canonical_name |
322a8516 | 10524 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10525 | objfile); |
34a68019 TT |
10526 | |
10527 | /* If we only computed INTERMEDIATE_NAME, or if | |
10528 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10529 | intern it. */ |
322a8516 | 10530 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10531 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10532 | else |
10533 | name = canonical_name; | |
94af9270 KS |
10534 | } |
10535 | } | |
10536 | ||
10537 | return name; | |
10538 | } | |
10539 | ||
0114d602 DJ |
10540 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10541 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10542 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10543 | not have a name. NAME may either be from a previous call to |
10544 | dwarf2_name or NULL. | |
10545 | ||
9c37b5ae | 10546 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10547 | |
10548 | static const char * | |
15d034d0 | 10549 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10550 | { |
94af9270 KS |
10551 | return dwarf2_compute_name (name, die, cu, 0); |
10552 | } | |
0114d602 | 10553 | |
94af9270 KS |
10554 | /* Construct a physname for the given DIE in CU. NAME may either be |
10555 | from a previous call to dwarf2_name or NULL. The result will be | |
10556 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10557 | name. | |
0114d602 | 10558 | |
9c37b5ae | 10559 | The output string will be canonicalized (if C++). */ |
0114d602 | 10560 | |
94af9270 | 10561 | static const char * |
15d034d0 | 10562 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10563 | { |
5e22e966 | 10564 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10565 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10566 | int need_copy = 1; |
10567 | ||
10568 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10569 | on its own. */ | |
10570 | if (!die_needs_namespace (die, cu)) | |
10571 | return dwarf2_compute_name (name, die, cu, 1); | |
10572 | ||
906bb4c5 TT |
10573 | if (cu->language != language_rust) |
10574 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10575 | |
10576 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10577 | has computed. */ | |
791afaa2 | 10578 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10579 | if (mangled != NULL) |
900e11f9 | 10580 | { |
900e11f9 | 10581 | |
59cc4834 JB |
10582 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10583 | { | |
10584 | /* Do nothing (do not demangle the symbol name). */ | |
10585 | } | |
10586 | else if (cu->language == language_go) | |
a766d390 | 10587 | { |
5e2db402 TT |
10588 | /* This is a lie, but we already lie to the caller new_symbol. |
10589 | new_symbol assumes we return the mangled name. | |
a766d390 | 10590 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10591 | } |
10592 | else | |
10593 | { | |
0eb876f5 JB |
10594 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10595 | their return type. It is easier for GDB users to search | |
10596 | for such functions as `name(params)' than `long name(params)'. | |
10597 | In such case the minimal symbol names do not match the full | |
10598 | symbol names but for template functions there is never a need | |
10599 | to look up their definition from their declaration so | |
10600 | the only disadvantage remains the minimal symbol variant | |
10601 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10602 | demangled.reset (gdb_demangle (mangled, |
10603 | (DMGL_PARAMS | DMGL_ANSI | |
10604 | | DMGL_RET_DROP))); | |
a766d390 | 10605 | } |
900e11f9 | 10606 | if (demangled) |
791afaa2 | 10607 | canon = demangled.get (); |
900e11f9 JK |
10608 | else |
10609 | { | |
10610 | canon = mangled; | |
10611 | need_copy = 0; | |
10612 | } | |
10613 | } | |
10614 | ||
10615 | if (canon == NULL || check_physname) | |
10616 | { | |
10617 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10618 | ||
10619 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10620 | { | |
10621 | /* It may not mean a bug in GDB. The compiler could also | |
10622 | compute DW_AT_linkage_name incorrectly. But in such case | |
10623 | GDB would need to be bug-to-bug compatible. */ | |
10624 | ||
b98664d3 | 10625 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10626 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10627 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10628 | objfile_name (objfile)); |
900e11f9 JK |
10629 | |
10630 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10631 | is available here - over computed PHYSNAME. It is safer | |
10632 | against both buggy GDB and buggy compilers. */ | |
10633 | ||
10634 | retval = canon; | |
10635 | } | |
10636 | else | |
10637 | { | |
10638 | retval = physname; | |
10639 | need_copy = 0; | |
10640 | } | |
10641 | } | |
10642 | else | |
10643 | retval = canon; | |
10644 | ||
10645 | if (need_copy) | |
be1e3d3e | 10646 | retval = objfile->intern (retval); |
900e11f9 | 10647 | |
900e11f9 | 10648 | return retval; |
0114d602 DJ |
10649 | } |
10650 | ||
74921315 KS |
10651 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10652 | a new symbol for it. | |
10653 | ||
10654 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10655 | ||
10656 | static int | |
10657 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10658 | { | |
10659 | struct attribute *attr; | |
10660 | ||
10661 | /* If the die does not have a name, this is not a namespace | |
10662 | alias. */ | |
10663 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10664 | if (attr != NULL) | |
10665 | { | |
10666 | int num; | |
10667 | struct die_info *d = die; | |
10668 | struct dwarf2_cu *imported_cu = cu; | |
10669 | ||
10670 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10671 | keep inspecting DIEs until we hit the underlying import. */ | |
10672 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10673 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10674 | { | |
10675 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10676 | if (attr == NULL) | |
10677 | break; | |
10678 | ||
10679 | d = follow_die_ref (d, attr, &imported_cu); | |
10680 | if (d->tag != DW_TAG_imported_declaration) | |
10681 | break; | |
10682 | } | |
10683 | ||
10684 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10685 | { | |
b98664d3 | 10686 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10687 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10688 | return 0; |
10689 | } | |
10690 | ||
10691 | if (attr != NULL) | |
10692 | { | |
10693 | struct type *type; | |
0826b30a | 10694 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10695 | |
aa66c379 | 10696 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10697 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10698 | { |
10699 | /* This declaration is a global namespace alias. Add | |
10700 | a symbol for it whose type is the aliased namespace. */ | |
10701 | new_symbol (die, type, cu); | |
10702 | return 1; | |
10703 | } | |
10704 | } | |
10705 | } | |
10706 | ||
10707 | return 0; | |
10708 | } | |
10709 | ||
22cee43f | 10710 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10711 | current context for CU. |
22cee43f PMR |
10712 | |
10713 | For Ada, imported declarations can materialize renamings, which *may* be | |
10714 | global. However it is impossible (for now?) in DWARF to distinguish | |
10715 | "external" imported declarations and "static" ones. As all imported | |
10716 | declarations seem to be static in all other languages, make them all CU-wide | |
10717 | global only in Ada. */ | |
10718 | ||
10719 | static struct using_direct ** | |
804d2729 | 10720 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10721 | { |
c24bdb02 KS |
10722 | if (cu->language == language_ada |
10723 | && cu->get_builder ()->outermost_context_p ()) | |
10724 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10725 | else |
c24bdb02 | 10726 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10727 | } |
10728 | ||
27aa8d6a SW |
10729 | /* Read the import statement specified by the given die and record it. */ |
10730 | ||
10731 | static void | |
10732 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10733 | { | |
5e22e966 | 10734 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10735 | struct attribute *import_attr; |
32019081 | 10736 | struct die_info *imported_die, *child_die; |
de4affc9 | 10737 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10738 | const char *imported_name; |
794684b6 | 10739 | const char *imported_name_prefix; |
13387711 SW |
10740 | const char *canonical_name; |
10741 | const char *import_alias; | |
10742 | const char *imported_declaration = NULL; | |
794684b6 | 10743 | const char *import_prefix; |
eb1e02fd | 10744 | std::vector<const char *> excludes; |
13387711 | 10745 | |
27aa8d6a SW |
10746 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10747 | if (import_attr == NULL) | |
10748 | { | |
b98664d3 | 10749 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10750 | dwarf_tag_name (die->tag)); |
10751 | return; | |
10752 | } | |
10753 | ||
de4affc9 CC |
10754 | imported_cu = cu; |
10755 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10756 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10757 | if (imported_name == NULL) |
10758 | { | |
10759 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10760 | ||
10761 | The import in the following code: | |
10762 | namespace A | |
10763 | { | |
10764 | typedef int B; | |
10765 | } | |
10766 | ||
10767 | int main () | |
10768 | { | |
10769 | using A::B; | |
10770 | B b; | |
10771 | return b; | |
10772 | } | |
10773 | ||
10774 | ... | |
10775 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10776 | <52> DW_AT_decl_file : 1 | |
10777 | <53> DW_AT_decl_line : 6 | |
10778 | <54> DW_AT_import : <0x75> | |
10779 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10780 | <59> DW_AT_name : B | |
10781 | <5b> DW_AT_decl_file : 1 | |
10782 | <5c> DW_AT_decl_line : 2 | |
10783 | <5d> DW_AT_type : <0x6e> | |
10784 | ... | |
10785 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10786 | <76> DW_AT_byte_size : 4 | |
10787 | <77> DW_AT_encoding : 5 (signed) | |
10788 | ||
10789 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10790 | This case will be ignored until the gcc bug is fixed. */ | |
10791 | return; | |
10792 | } | |
10793 | ||
82856980 SW |
10794 | /* Figure out the local name after import. */ |
10795 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10796 | |
794684b6 SW |
10797 | /* Figure out where the statement is being imported to. */ |
10798 | import_prefix = determine_prefix (die, cu); | |
10799 | ||
10800 | /* Figure out what the scope of the imported die is and prepend it | |
10801 | to the name of the imported die. */ | |
de4affc9 | 10802 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10803 | |
f55ee35c JK |
10804 | if (imported_die->tag != DW_TAG_namespace |
10805 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10806 | { |
13387711 SW |
10807 | imported_declaration = imported_name; |
10808 | canonical_name = imported_name_prefix; | |
794684b6 | 10809 | } |
13387711 | 10810 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10811 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10812 | imported_name_prefix, |
10813 | (cu->language == language_d ? "." : "::"), | |
10814 | imported_name, (char *) NULL); | |
13387711 SW |
10815 | else |
10816 | canonical_name = imported_name; | |
794684b6 | 10817 | |
32019081 JK |
10818 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10819 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10820 | child_die = child_die->sibling) |
32019081 JK |
10821 | { |
10822 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10823 | represented by an imported module entry with an import attribute | |
10824 | referring to the module and owned entries corresponding to those | |
10825 | entities that are renamed as part of being imported. */ | |
10826 | ||
10827 | if (child_die->tag != DW_TAG_imported_declaration) | |
10828 | { | |
b98664d3 | 10829 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10830 | "- DIE at %s [in module %s]"), |
10831 | sect_offset_str (child_die->sect_off), | |
10832 | objfile_name (objfile)); | |
32019081 JK |
10833 | continue; |
10834 | } | |
10835 | ||
10836 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10837 | if (import_attr == NULL) | |
10838 | { | |
b98664d3 | 10839 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10840 | dwarf_tag_name (child_die->tag)); |
10841 | continue; | |
10842 | } | |
10843 | ||
10844 | imported_cu = cu; | |
10845 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10846 | &imported_cu); | |
10847 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10848 | if (imported_name == NULL) | |
10849 | { | |
b98664d3 | 10850 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10851 | "imported name - DIE at %s [in module %s]"), |
10852 | sect_offset_str (child_die->sect_off), | |
10853 | objfile_name (objfile)); | |
32019081 JK |
10854 | continue; |
10855 | } | |
10856 | ||
eb1e02fd | 10857 | excludes.push_back (imported_name); |
32019081 JK |
10858 | |
10859 | process_die (child_die, cu); | |
10860 | } | |
10861 | ||
804d2729 | 10862 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10863 | import_prefix, |
10864 | canonical_name, | |
10865 | import_alias, | |
10866 | imported_declaration, | |
10867 | excludes, | |
10868 | 0, | |
10869 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10870 | } |
10871 | ||
5230b05a WT |
10872 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10873 | types, but gives them a size of zero. Starting with version 14, | |
10874 | ICC is compatible with GCC. */ | |
10875 | ||
9068261f | 10876 | static bool |
5230b05a WT |
10877 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10878 | { | |
10879 | if (!cu->checked_producer) | |
10880 | check_producer (cu); | |
10881 | ||
10882 | return cu->producer_is_icc_lt_14; | |
10883 | } | |
10884 | ||
eb77c9df AB |
10885 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10886 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10887 | which says that void functions should not have a DW_AT_type. */ | |
10888 | ||
10889 | static bool | |
10890 | producer_is_icc (struct dwarf2_cu *cu) | |
10891 | { | |
10892 | if (!cu->checked_producer) | |
10893 | check_producer (cu); | |
10894 | ||
10895 | return cu->producer_is_icc; | |
10896 | } | |
10897 | ||
1b80a9fa JK |
10898 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10899 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10900 | this, it was first present in GCC release 4.3.0. */ | |
10901 | ||
9068261f | 10902 | static bool |
1b80a9fa JK |
10903 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10904 | { | |
10905 | if (!cu->checked_producer) | |
10906 | check_producer (cu); | |
10907 | ||
10908 | return cu->producer_is_gcc_lt_4_3; | |
10909 | } | |
10910 | ||
d721ba37 PA |
10911 | static file_and_directory |
10912 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10913 | { |
d721ba37 PA |
10914 | file_and_directory res; |
10915 | ||
9291a0cd TT |
10916 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10917 | is not a source language identifier. */ | |
d721ba37 PA |
10918 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10919 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10920 | |
d721ba37 PA |
10921 | if (res.comp_dir == NULL |
10922 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10923 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10924 | { |
d721ba37 PA |
10925 | res.comp_dir_storage = ldirname (res.name); |
10926 | if (!res.comp_dir_storage.empty ()) | |
10927 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10928 | } |
d721ba37 | 10929 | if (res.comp_dir != NULL) |
9291a0cd TT |
10930 | { |
10931 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10932 | directory, get rid of it. */ | |
d721ba37 | 10933 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10934 | |
d721ba37 PA |
10935 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10936 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10937 | } |
10938 | ||
d721ba37 PA |
10939 | if (res.name == NULL) |
10940 | res.name = "<unknown>"; | |
10941 | ||
10942 | return res; | |
9291a0cd TT |
10943 | } |
10944 | ||
f4dc4d17 DE |
10945 | /* Handle DW_AT_stmt_list for a compilation unit. |
10946 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10947 | COMP_DIR is the compilation directory. LOWPC is passed to |
10948 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10949 | |
10950 | static void | |
10951 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10952 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10953 | { |
976ca316 | 10954 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 10955 | struct attribute *attr; |
527f3840 JK |
10956 | struct line_header line_header_local; |
10957 | hashval_t line_header_local_hash; | |
527f3840 JK |
10958 | void **slot; |
10959 | int decode_mapping; | |
2ab95328 | 10960 | |
f4dc4d17 DE |
10961 | gdb_assert (! cu->per_cu->is_debug_types); |
10962 | ||
2ab95328 | 10963 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
10964 | if (attr == NULL) |
10965 | return; | |
10966 | ||
9c541725 | 10967 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
10968 | |
10969 | /* The line header hash table is only created if needed (it exists to | |
10970 | prevent redundant reading of the line table for partial_units). | |
10971 | If we're given a partial_unit, we'll need it. If we're given a | |
10972 | compile_unit, then use the line header hash table if it's already | |
10973 | created, but don't create one just yet. */ | |
10974 | ||
976ca316 | 10975 | if (per_objfile->line_header_hash == NULL |
527f3840 | 10976 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 10977 | { |
976ca316 | 10978 | per_objfile->line_header_hash |
d15acc42 TT |
10979 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10980 | line_header_eq_voidp, | |
10981 | free_line_header_voidp, | |
10982 | xcalloc, xfree)); | |
527f3840 | 10983 | } |
2ab95328 | 10984 | |
9c541725 | 10985 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10986 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10987 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 10988 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 10989 | { |
976ca316 | 10990 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
10991 | &line_header_local, |
10992 | line_header_local_hash, NO_INSERT); | |
10993 | ||
10994 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10995 | is not present in *SLOT (since if there is something in *SLOT then | |
10996 | it will be for a partial_unit). */ | |
10997 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10998 | { |
527f3840 | 10999 | gdb_assert (*slot != NULL); |
9a3c8263 | 11000 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11001 | return; |
dee91e82 | 11002 | } |
2ab95328 | 11003 | } |
527f3840 JK |
11004 | |
11005 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11006 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11007 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11008 | if (lh == NULL) | |
527f3840 | 11009 | return; |
4c8aa72d PA |
11010 | |
11011 | cu->line_header = lh.release (); | |
11012 | cu->line_header_die_owner = die; | |
527f3840 | 11013 | |
976ca316 | 11014 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
11015 | slot = NULL; |
11016 | else | |
11017 | { | |
976ca316 | 11018 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11019 | &line_header_local, |
11020 | line_header_local_hash, INSERT); | |
11021 | gdb_assert (slot != NULL); | |
11022 | } | |
11023 | if (slot != NULL && *slot == NULL) | |
11024 | { | |
11025 | /* This newly decoded line number information unit will be owned | |
11026 | by line_header_hash hash table. */ | |
11027 | *slot = cu->line_header; | |
4c8aa72d | 11028 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11029 | } |
11030 | else | |
11031 | { | |
11032 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11033 | may be already used by multiple CUs. Create only temporary decoded | |
11034 | line_header for this CU - it may happen at most once for each line | |
11035 | number information unit. And if we're not using line_header_hash | |
11036 | then this is what we want as well. */ | |
11037 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11038 | } |
11039 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11040 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11041 | decode_mapping); | |
fff8551c | 11042 | |
2ab95328 TT |
11043 | } |
11044 | ||
95554aad | 11045 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11046 | |
c906108c | 11047 | static void |
e7c27a73 | 11048 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11049 | { |
976ca316 SM |
11050 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
11051 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 11052 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 11053 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11054 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11055 | struct attribute *attr; | |
c906108c | 11056 | struct die_info *child_die; |
e142c38c | 11057 | CORE_ADDR baseaddr; |
6e70227d | 11058 | |
380618d6 | 11059 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11060 | baseaddr = objfile->text_section_offset (); |
c906108c | 11061 | |
fae299cd | 11062 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11063 | |
11064 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11065 | from finish_block. */ | |
2acceee2 | 11066 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11067 | lowpc = highpc; |
3e29f34a | 11068 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11069 | |
d721ba37 | 11070 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11071 | |
f4b8a18d KW |
11072 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11073 | standardised yet. As a workaround for the language detection we fall | |
11074 | back to the DW_AT_producer string. */ | |
11075 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11076 | cu->language = language_opencl; | |
11077 | ||
3019eac3 DE |
11078 | /* Similar hack for Go. */ |
11079 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11080 | set_cu_language (DW_LANG_Go, cu); | |
11081 | ||
c24bdb02 | 11082 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11083 | |
11084 | /* Decode line number information if present. We do this before | |
11085 | processing child DIEs, so that the line header table is available | |
11086 | for DW_AT_decl_file. */ | |
d721ba37 | 11087 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11088 | |
11089 | /* Process all dies in compilation unit. */ | |
11090 | if (die->child != NULL) | |
11091 | { | |
11092 | child_die = die->child; | |
11093 | while (child_die && child_die->tag) | |
11094 | { | |
11095 | process_die (child_die, cu); | |
436c571c | 11096 | child_die = child_die->sibling; |
3019eac3 DE |
11097 | } |
11098 | } | |
11099 | ||
11100 | /* Decode macro information, if present. Dwarf 2 macro information | |
11101 | refers to information in the line number info statement program | |
11102 | header, so we can only read it if we've read the header | |
11103 | successfully. */ | |
0af92d60 JK |
11104 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11105 | if (attr == NULL) | |
11106 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11107 | if (attr && cu->line_header) |
11108 | { | |
11109 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11110 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11111 | |
43f3e411 | 11112 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11113 | } |
11114 | else | |
11115 | { | |
11116 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11117 | if (attr && cu->line_header) | |
11118 | { | |
11119 | unsigned int macro_offset = DW_UNSND (attr); | |
11120 | ||
43f3e411 | 11121 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11122 | } |
11123 | } | |
3019eac3 DE |
11124 | } |
11125 | ||
c24bdb02 KS |
11126 | void |
11127 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11128 | { |
f4dc4d17 DE |
11129 | struct type_unit_group *tu_group; |
11130 | int first_time; | |
3019eac3 | 11131 | struct attribute *attr; |
9c541725 | 11132 | unsigned int i; |
0186c6a7 | 11133 | struct signatured_type *sig_type; |
3019eac3 | 11134 | |
f4dc4d17 | 11135 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11136 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11137 | |
c24bdb02 | 11138 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11139 | |
f4dc4d17 | 11140 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11141 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11142 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11143 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11144 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11145 | |
11146 | /* If we've already processed this stmt_list there's no real need to | |
11147 | do it again, we could fake it and just recreate the part we need | |
11148 | (file name,index -> symtab mapping). If data shows this optimization | |
11149 | is useful we can do it then. */ | |
8adb8487 TT |
11150 | type_unit_group_unshareable *tug_unshare |
11151 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11152 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11153 | |
11154 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11155 | debug info. */ | |
fff8551c | 11156 | line_header_up lh; |
f4dc4d17 | 11157 | if (attr != NULL) |
3019eac3 | 11158 | { |
9c541725 | 11159 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11160 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11161 | } |
11162 | if (lh == NULL) | |
11163 | { | |
11164 | if (first_time) | |
c24bdb02 | 11165 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11166 | else |
11167 | { | |
8adb8487 | 11168 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11169 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11170 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11171 | m_builder.reset (new struct buildsym_compunit |
11172 | (COMPUNIT_OBJFILE (cust), "", | |
11173 | COMPUNIT_DIRNAME (cust), | |
11174 | compunit_language (cust), | |
11175 | 0, cust)); | |
770479f2 | 11176 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11177 | } |
f4dc4d17 | 11178 | return; |
3019eac3 DE |
11179 | } |
11180 | ||
c24bdb02 KS |
11181 | line_header = lh.release (); |
11182 | line_header_die_owner = die; | |
3019eac3 | 11183 | |
f4dc4d17 DE |
11184 | if (first_time) |
11185 | { | |
c24bdb02 | 11186 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11187 | |
1fd60fc0 DE |
11188 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11189 | still initializing it, and our caller (a few levels up) | |
11190 | process_full_type_unit still needs to know if this is the first | |
11191 | time. */ | |
11192 | ||
8adb8487 | 11193 | tug_unshare->symtabs |
4ac93832 TT |
11194 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11195 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11196 | |
7ba99d21 AT |
11197 | auto &file_names = line_header->file_names (); |
11198 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11199 | { |
7ba99d21 | 11200 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11201 | dwarf2_start_subfile (this, fe.name, |
11202 | fe.include_dir (line_header)); | |
11203 | buildsym_compunit *b = get_builder (); | |
11204 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11205 | { |
4c8aa72d PA |
11206 | /* NOTE: start_subfile will recognize when it's been |
11207 | passed a file it has already seen. So we can't | |
11208 | assume there's a simple mapping from | |
11209 | cu->line_header->file_names to subfiles, plus | |
11210 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11211 | b->get_current_subfile ()->symtab |
11212 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11213 | } |
11214 | ||
c24bdb02 | 11215 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11216 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11217 | } |
11218 | } | |
11219 | else | |
3019eac3 | 11220 | { |
c24bdb02 | 11221 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11222 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11223 | m_builder.reset (new struct buildsym_compunit |
11224 | (COMPUNIT_OBJFILE (cust), "", | |
11225 | COMPUNIT_DIRNAME (cust), | |
11226 | compunit_language (cust), | |
11227 | 0, cust)); | |
770479f2 | 11228 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11229 | |
7ba99d21 AT |
11230 | auto &file_names = line_header->file_names (); |
11231 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11232 | { |
7ba99d21 | 11233 | file_entry &fe = file_names[i]; |
8adb8487 | 11234 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11235 | } |
3019eac3 DE |
11236 | } |
11237 | ||
f4dc4d17 DE |
11238 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11239 | so they don't have a "real" (so to speak) symtab anyway. | |
11240 | There is later code that will assign the main symtab to all symbols | |
11241 | that don't have one. We need to handle the case of a symbol with a | |
11242 | missing symtab (DW_AT_decl_file) anyway. */ | |
11243 | } | |
3019eac3 | 11244 | |
f4dc4d17 DE |
11245 | /* Process DW_TAG_type_unit. |
11246 | For TUs we want to skip the first top level sibling if it's not the | |
11247 | actual type being defined by this TU. In this case the first top | |
11248 | level sibling is there to provide context only. */ | |
3019eac3 | 11249 | |
f4dc4d17 DE |
11250 | static void |
11251 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11252 | { | |
11253 | struct die_info *child_die; | |
3019eac3 | 11254 | |
f4dc4d17 DE |
11255 | prepare_one_comp_unit (cu, die, language_minimal); |
11256 | ||
11257 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11258 | We do this before processing child DIEs, so that the line header table | |
11259 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11260 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11261 | |
11262 | if (die->child != NULL) | |
11263 | { | |
11264 | child_die = die->child; | |
11265 | while (child_die && child_die->tag) | |
11266 | { | |
11267 | process_die (child_die, cu); | |
436c571c | 11268 | child_die = child_die->sibling; |
f4dc4d17 DE |
11269 | } |
11270 | } | |
3019eac3 DE |
11271 | } |
11272 | \f | |
80626a55 DE |
11273 | /* DWO/DWP files. |
11274 | ||
11275 | http://gcc.gnu.org/wiki/DebugFission | |
11276 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11277 | ||
11278 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11279 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11280 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11281 | |
11282 | static hashval_t | |
11283 | hash_dwo_file (const void *item) | |
11284 | { | |
9a3c8263 | 11285 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11286 | hashval_t hash; |
3019eac3 | 11287 | |
a2ce51a0 DE |
11288 | hash = htab_hash_string (dwo_file->dwo_name); |
11289 | if (dwo_file->comp_dir != NULL) | |
11290 | hash += htab_hash_string (dwo_file->comp_dir); | |
11291 | return hash; | |
3019eac3 DE |
11292 | } |
11293 | ||
11294 | static int | |
11295 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11296 | { | |
9a3c8263 SM |
11297 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11298 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11299 | |
a2ce51a0 DE |
11300 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11301 | return 0; | |
11302 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11303 | return lhs->comp_dir == rhs->comp_dir; | |
11304 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11305 | } |
11306 | ||
11307 | /* Allocate a hash table for DWO files. */ | |
11308 | ||
51ac9db5 | 11309 | static htab_up |
298e9637 | 11310 | allocate_dwo_file_hash_table () |
3019eac3 | 11311 | { |
51ac9db5 SM |
11312 | auto delete_dwo_file = [] (void *item) |
11313 | { | |
11314 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11315 | ||
11316 | delete dwo_file; | |
11317 | }; | |
11318 | ||
bc68fb19 TT |
11319 | return htab_up (htab_create_alloc (41, |
11320 | hash_dwo_file, | |
11321 | eq_dwo_file, | |
11322 | delete_dwo_file, | |
11323 | xcalloc, xfree)); | |
3019eac3 DE |
11324 | } |
11325 | ||
80626a55 DE |
11326 | /* Lookup DWO file DWO_NAME. */ |
11327 | ||
11328 | static void ** | |
976ca316 | 11329 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11330 | const char *dwo_name, |
11331 | const char *comp_dir) | |
80626a55 DE |
11332 | { |
11333 | struct dwo_file find_entry; | |
11334 | void **slot; | |
11335 | ||
976ca316 SM |
11336 | if (per_objfile->per_bfd->dwo_files == NULL) |
11337 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11338 | |
0ac5b59e DE |
11339 | find_entry.dwo_name = dwo_name; |
11340 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11341 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11342 | INSERT); |
80626a55 DE |
11343 | |
11344 | return slot; | |
11345 | } | |
11346 | ||
3019eac3 DE |
11347 | static hashval_t |
11348 | hash_dwo_unit (const void *item) | |
11349 | { | |
9a3c8263 | 11350 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11351 | |
11352 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11353 | return dwo_unit->signature; | |
11354 | } | |
11355 | ||
11356 | static int | |
11357 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11358 | { | |
9a3c8263 SM |
11359 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11360 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11361 | |
11362 | /* The signature is assumed to be unique within the DWO file. | |
11363 | So while object file CU dwo_id's always have the value zero, | |
11364 | that's OK, assuming each object file DWO file has only one CU, | |
11365 | and that's the rule for now. */ | |
11366 | return lhs->signature == rhs->signature; | |
11367 | } | |
11368 | ||
11369 | /* Allocate a hash table for DWO CUs,TUs. | |
11370 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11371 | ||
b0b6a987 | 11372 | static htab_up |
298e9637 | 11373 | allocate_dwo_unit_table () |
3019eac3 DE |
11374 | { |
11375 | /* Start out with a pretty small number. | |
11376 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11377 | return htab_up (htab_create_alloc (3, |
11378 | hash_dwo_unit, | |
11379 | eq_dwo_unit, | |
11380 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11381 | } |
11382 | ||
19c3d4c9 | 11383 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11384 | |
11385 | static void | |
19c3d4c9 DE |
11386 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11387 | const gdb_byte *info_ptr, | |
11388 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11389 | struct dwo_file *dwo_file, |
11390 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11391 | { |
11392 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11393 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11394 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11395 | |
a084a2a6 AT |
11396 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11397 | if (!signature.has_value ()) | |
3019eac3 | 11398 | { |
b98664d3 | 11399 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11400 | " its dwo_id [in module %s]"), |
9d8780f0 | 11401 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11402 | return; |
11403 | } | |
11404 | ||
3019eac3 | 11405 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11406 | dwo_unit->signature = *signature; |
8a0459fd | 11407 | dwo_unit->section = section; |
9c541725 | 11408 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11409 | dwo_unit->length = cu->per_cu->length; |
11410 | ||
b4f54984 | 11411 | if (dwarf_read_debug) |
9d8780f0 SM |
11412 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11413 | sect_offset_str (sect_off), | |
9c541725 | 11414 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11415 | } |
11416 | ||
33c5cd75 | 11417 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11418 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11419 | |
33c5cd75 | 11420 | static void |
976ca316 | 11421 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11422 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11423 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11424 | { |
976ca316 SM |
11425 | struct objfile *objfile = per_objfile->objfile; |
11426 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11427 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11428 | |
96b79293 | 11429 | section.read (objfile); |
33c5cd75 | 11430 | info_ptr = section.buffer; |
3019eac3 DE |
11431 | |
11432 | if (info_ptr == NULL) | |
33c5cd75 | 11433 | return; |
3019eac3 | 11434 | |
b4f54984 | 11435 | if (dwarf_read_debug) |
19c3d4c9 DE |
11436 | { |
11437 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11438 | section.get_name (), |
11439 | section.get_file_name ()); | |
19c3d4c9 | 11440 | } |
3019eac3 | 11441 | |
33c5cd75 | 11442 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11443 | while (info_ptr < end_ptr) |
11444 | { | |
11445 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11446 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11447 | struct dwo_unit *dwo_unit; |
11448 | void **slot; | |
11449 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11450 | |
11451 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11452 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11453 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11454 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11455 | per_cu.section = §ion; | |
11456 | ||
976ca316 | 11457 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11458 | if (!reader.dummy_p) |
11459 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11460 | &dwo_file, &read_unit); |
33c5cd75 DB |
11461 | info_ptr += per_cu.length; |
11462 | ||
11463 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11464 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11465 | continue; |
3019eac3 | 11466 | |
33c5cd75 | 11467 | if (cus_htab == NULL) |
298e9637 | 11468 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11469 | |
1859c670 | 11470 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11471 | struct dwo_unit); |
c0ab21c2 | 11472 | *dwo_unit = read_unit; |
b0b6a987 | 11473 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11474 | gdb_assert (slot != NULL); |
11475 | if (*slot != NULL) | |
19c3d4c9 | 11476 | { |
33c5cd75 DB |
11477 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11478 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11479 | |
b98664d3 | 11480 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11481 | " the entry at offset %s, signature %s"), |
11482 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11483 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11484 | } |
33c5cd75 | 11485 | *slot = (void *)dwo_unit; |
3019eac3 | 11486 | } |
3019eac3 DE |
11487 | } |
11488 | ||
80626a55 DE |
11489 | /* DWP file .debug_{cu,tu}_index section format: |
11490 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11491 | ||
d2415c6c DE |
11492 | DWP Version 1: |
11493 | ||
80626a55 DE |
11494 | Both index sections have the same format, and serve to map a 64-bit |
11495 | signature to a set of section numbers. Each section begins with a header, | |
11496 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11497 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11498 | aligned at 8-byte boundaries in the file. | |
11499 | ||
d2415c6c DE |
11500 | The index section header consists of: |
11501 | ||
11502 | V, 32 bit version number | |
11503 | -, 32 bits unused | |
11504 | N, 32 bit number of compilation units or type units in the index | |
11505 | M, 32 bit number of slots in the hash table | |
80626a55 | 11506 | |
d2415c6c | 11507 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11508 | |
d2415c6c DE |
11509 | The hash table begins at offset 16 in the section, and consists of an array |
11510 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11511 | order of the application binary). Unused slots in the hash table are 0. | |
11512 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11513 | |
d2415c6c DE |
11514 | The parallel table begins immediately after the hash table |
11515 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11516 | array of 32-bit indexes (using the byte order of the application binary), | |
11517 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11518 | table contains a 32-bit index into the pool of section numbers. For unused | |
11519 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11520 | |
73869dc2 DE |
11521 | The pool of section numbers begins immediately following the hash table |
11522 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11523 | section numbers consists of an array of 32-bit words (using the byte order | |
11524 | of the application binary). Each item in the array is indexed starting | |
11525 | from 0. The hash table entry provides the index of the first section | |
11526 | number in the set. Additional section numbers in the set follow, and the | |
11527 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11528 | ||
11529 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11530 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11531 | be the second entry. Other members of the set may follow in any order. | |
11532 | ||
11533 | --- | |
11534 | ||
11535 | DWP Version 2: | |
11536 | ||
11537 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11538 | and the entries in the index tables are now offsets into these sections. | |
11539 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11540 | section. | |
11541 | ||
11542 | Index Section Contents: | |
11543 | Header | |
11544 | Hash Table of Signatures dwp_hash_table.hash_table | |
11545 | Parallel Table of Indices dwp_hash_table.unit_table | |
11546 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11547 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11548 | ||
11549 | The index section header consists of: | |
11550 | ||
11551 | V, 32 bit version number | |
11552 | L, 32 bit number of columns in the table of section offsets | |
11553 | N, 32 bit number of compilation units or type units in the index | |
11554 | M, 32 bit number of slots in the hash table | |
11555 | ||
11556 | Numbers are recorded using the byte order of the application binary. | |
11557 | ||
11558 | The hash table has the same format as version 1. | |
11559 | The parallel table of indices has the same format as version 1, | |
11560 | except that the entries are origin-1 indices into the table of sections | |
11561 | offsets and the table of section sizes. | |
11562 | ||
11563 | The table of offsets begins immediately following the parallel table | |
11564 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11565 | a two-dimensional array of 32-bit words (using the byte order of the | |
11566 | application binary), with L columns and N+1 rows, in row-major order. | |
11567 | Each row in the array is indexed starting from 0. The first row provides | |
11568 | a key to the remaining rows: each column in this row provides an identifier | |
11569 | for a debug section, and the offsets in the same column of subsequent rows | |
11570 | refer to that section. The section identifiers are: | |
11571 | ||
11572 | DW_SECT_INFO 1 .debug_info.dwo | |
11573 | DW_SECT_TYPES 2 .debug_types.dwo | |
11574 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11575 | DW_SECT_LINE 4 .debug_line.dwo | |
11576 | DW_SECT_LOC 5 .debug_loc.dwo | |
11577 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11578 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11579 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11580 | ||
11581 | The offsets provided by the CU and TU index sections are the base offsets | |
11582 | for the contributions made by each CU or TU to the corresponding section | |
11583 | in the package file. Each CU and TU header contains an abbrev_offset | |
11584 | field, used to find the abbreviations table for that CU or TU within the | |
11585 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11586 | be interpreted as relative to the base offset given in the index section. | |
11587 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11588 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11589 | and offsets into other debug sections obtained from DWARF attributes should | |
11590 | also be interpreted as relative to the corresponding base offset. | |
11591 | ||
11592 | The table of sizes begins immediately following the table of offsets. | |
11593 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11594 | with L columns and N rows, in row-major order. Each row in the array is | |
11595 | indexed starting from 1 (row 0 is shared by the two tables). | |
11596 | ||
11597 | --- | |
11598 | ||
11599 | Hash table lookup is handled the same in version 1 and 2: | |
11600 | ||
11601 | We assume that N and M will not exceed 2^32 - 1. | |
11602 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11603 | ||
d2415c6c DE |
11604 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11605 | in the hash table is located as follows: | |
80626a55 | 11606 | |
d2415c6c DE |
11607 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11608 | the low-order k bits all set to 1. | |
80626a55 | 11609 | |
d2415c6c | 11610 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11611 | |
d2415c6c DE |
11612 | 3) If the hash table entry at index H matches the signature, use that |
11613 | entry. If the hash table entry at index H is unused (all zeroes), | |
11614 | terminate the search: the signature is not present in the table. | |
80626a55 | 11615 | |
d2415c6c | 11616 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11617 | |
d2415c6c | 11618 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11619 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11620 | |
11621 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11622 | .debug_{info,types}.dwo in DWP_FILE. | |
11623 | Returns NULL if there isn't one. | |
11624 | Note: This function processes DWP files only, not DWO files. */ | |
11625 | ||
11626 | static struct dwp_hash_table * | |
976ca316 | 11627 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11628 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11629 | { |
976ca316 | 11630 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11631 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11632 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11633 | struct dwarf2_section_info *index; |
73869dc2 | 11634 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11635 | struct dwp_hash_table *htab; |
11636 | ||
11637 | if (is_debug_types) | |
11638 | index = &dwp_file->sections.tu_index; | |
11639 | else | |
11640 | index = &dwp_file->sections.cu_index; | |
11641 | ||
96b79293 | 11642 | if (index->empty ()) |
80626a55 | 11643 | return NULL; |
96b79293 | 11644 | index->read (objfile); |
80626a55 DE |
11645 | |
11646 | index_ptr = index->buffer; | |
11647 | index_end = index_ptr + index->size; | |
11648 | ||
11649 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11650 | index_ptr += 4; |
11651 | if (version == 2) | |
11652 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11653 | else | |
11654 | nr_columns = 0; | |
11655 | index_ptr += 4; | |
80626a55 DE |
11656 | nr_units = read_4_bytes (dbfd, index_ptr); |
11657 | index_ptr += 4; | |
11658 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11659 | index_ptr += 4; | |
11660 | ||
73869dc2 | 11661 | if (version != 1 && version != 2) |
80626a55 | 11662 | { |
21aa081e | 11663 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11664 | " [in module %s]"), |
21aa081e | 11665 | pulongest (version), dwp_file->name); |
80626a55 DE |
11666 | } |
11667 | if (nr_slots != (nr_slots & -nr_slots)) | |
11668 | { | |
21aa081e | 11669 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11670 | " is not power of 2 [in module %s]"), |
21aa081e | 11671 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11672 | } |
11673 | ||
976ca316 | 11674 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11675 | htab->version = version; |
11676 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11677 | htab->nr_units = nr_units; |
11678 | htab->nr_slots = nr_slots; | |
11679 | htab->hash_table = index_ptr; | |
11680 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11681 | |
11682 | /* Exit early if the table is empty. */ | |
11683 | if (nr_slots == 0 || nr_units == 0 | |
11684 | || (version == 2 && nr_columns == 0)) | |
11685 | { | |
11686 | /* All must be zero. */ | |
11687 | if (nr_slots != 0 || nr_units != 0 | |
11688 | || (version == 2 && nr_columns != 0)) | |
11689 | { | |
b98664d3 | 11690 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11691 | " all zero [in modules %s]"), |
11692 | dwp_file->name); | |
11693 | } | |
11694 | return htab; | |
11695 | } | |
11696 | ||
11697 | if (version == 1) | |
11698 | { | |
11699 | htab->section_pool.v1.indices = | |
11700 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11701 | /* It's harder to decide whether the section is too small in v1. | |
11702 | V1 is deprecated anyway so we punt. */ | |
11703 | } | |
11704 | else | |
11705 | { | |
11706 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11707 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11708 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11709 | /* Reverse map for error checking. */ |
11710 | int ids_seen[DW_SECT_MAX + 1]; | |
11711 | int i; | |
11712 | ||
11713 | if (nr_columns < 2) | |
11714 | { | |
11715 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11716 | " in section table [in module %s]"), | |
11717 | dwp_file->name); | |
11718 | } | |
11719 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11720 | { | |
11721 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11722 | " in section table [in module %s]"), | |
11723 | dwp_file->name); | |
11724 | } | |
04fd5eed GB |
11725 | memset (ids, 255, sizeof_ids); |
11726 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11727 | for (i = 0; i < nr_columns; ++i) |
11728 | { | |
11729 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11730 | ||
11731 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11732 | { | |
11733 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11734 | " in section table [in module %s]"), | |
11735 | id, dwp_file->name); | |
11736 | } | |
11737 | if (ids_seen[id] != -1) | |
11738 | { | |
11739 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11740 | " id %d in section table [in module %s]"), | |
11741 | id, dwp_file->name); | |
11742 | } | |
11743 | ids_seen[id] = i; | |
11744 | ids[i] = id; | |
11745 | } | |
11746 | /* Must have exactly one info or types section. */ | |
11747 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11748 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11749 | != 1) | |
11750 | { | |
11751 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11752 | " DWO info/types section [in module %s]"), | |
11753 | dwp_file->name); | |
11754 | } | |
11755 | /* Must have an abbrev section. */ | |
11756 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11757 | { | |
11758 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11759 | " section [in module %s]"), | |
11760 | dwp_file->name); | |
11761 | } | |
11762 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11763 | htab->section_pool.v2.sizes = | |
11764 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11765 | * nr_units * nr_columns); | |
11766 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11767 | * nr_units * nr_columns)) | |
11768 | > index_end) | |
11769 | { | |
11770 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11771 | " [in module %s]"), | |
11772 | dwp_file->name); | |
11773 | } | |
11774 | } | |
80626a55 DE |
11775 | |
11776 | return htab; | |
11777 | } | |
11778 | ||
11779 | /* Update SECTIONS with the data from SECTP. | |
11780 | ||
11781 | This function is like the other "locate" section routines that are | |
11782 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11783 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11784 | |
11785 | The result is non-zero for success, or zero if an error was found. */ | |
11786 | ||
11787 | static int | |
73869dc2 DE |
11788 | locate_v1_virtual_dwo_sections (asection *sectp, |
11789 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11790 | { |
11791 | const struct dwop_section_names *names = &dwop_section_names; | |
11792 | ||
11793 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11794 | { | |
11795 | /* There can be only one. */ | |
049412e3 | 11796 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11797 | return 0; |
049412e3 | 11798 | sections->abbrev.s.section = sectp; |
fd361982 | 11799 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11800 | } |
11801 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11802 | || section_is_p (sectp->name, &names->types_dwo)) | |
11803 | { | |
11804 | /* There can be only one. */ | |
049412e3 | 11805 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11806 | return 0; |
049412e3 | 11807 | sections->info_or_types.s.section = sectp; |
fd361982 | 11808 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11809 | } |
11810 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11811 | { | |
11812 | /* There can be only one. */ | |
049412e3 | 11813 | if (sections->line.s.section != NULL) |
80626a55 | 11814 | return 0; |
049412e3 | 11815 | sections->line.s.section = sectp; |
fd361982 | 11816 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11817 | } |
11818 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11819 | { | |
11820 | /* There can be only one. */ | |
049412e3 | 11821 | if (sections->loc.s.section != NULL) |
80626a55 | 11822 | return 0; |
049412e3 | 11823 | sections->loc.s.section = sectp; |
fd361982 | 11824 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11825 | } |
11826 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11827 | { | |
11828 | /* There can be only one. */ | |
049412e3 | 11829 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11830 | return 0; |
049412e3 | 11831 | sections->macinfo.s.section = sectp; |
fd361982 | 11832 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11833 | } |
11834 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11835 | { | |
11836 | /* There can be only one. */ | |
049412e3 | 11837 | if (sections->macro.s.section != NULL) |
80626a55 | 11838 | return 0; |
049412e3 | 11839 | sections->macro.s.section = sectp; |
fd361982 | 11840 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11841 | } |
11842 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11843 | { | |
11844 | /* There can be only one. */ | |
049412e3 | 11845 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11846 | return 0; |
049412e3 | 11847 | sections->str_offsets.s.section = sectp; |
fd361982 | 11848 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11849 | } |
11850 | else | |
11851 | { | |
11852 | /* No other kind of section is valid. */ | |
11853 | return 0; | |
11854 | } | |
11855 | ||
11856 | return 1; | |
11857 | } | |
11858 | ||
73869dc2 DE |
11859 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11860 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11861 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11862 | This is for DWP version 1 files. */ | |
80626a55 DE |
11863 | |
11864 | static struct dwo_unit * | |
976ca316 | 11865 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11866 | struct dwp_file *dwp_file, |
73869dc2 DE |
11867 | uint32_t unit_index, |
11868 | const char *comp_dir, | |
11869 | ULONGEST signature, int is_debug_types) | |
80626a55 | 11870 | { |
73869dc2 DE |
11871 | const struct dwp_hash_table *dwp_htab = |
11872 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11873 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11874 | const char *kind = is_debug_types ? "TU" : "CU"; |
11875 | struct dwo_file *dwo_file; | |
11876 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11877 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11878 | void **dwo_file_slot; |
80626a55 DE |
11879 | int i; |
11880 | ||
73869dc2 DE |
11881 | gdb_assert (dwp_file->version == 1); |
11882 | ||
b4f54984 | 11883 | if (dwarf_read_debug) |
80626a55 | 11884 | { |
73869dc2 | 11885 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 11886 | kind, |
73869dc2 | 11887 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
11888 | dwp_file->name); |
11889 | } | |
11890 | ||
19ac8c2e | 11891 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11892 | Put a limit on the number of sections we look for so that bad data |
11893 | doesn't cause us to loop forever. */ | |
11894 | ||
73869dc2 | 11895 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11896 | (1 /* .debug_info or .debug_types */ \ |
11897 | + 1 /* .debug_abbrev */ \ | |
11898 | + 1 /* .debug_line */ \ | |
11899 | + 1 /* .debug_loc */ \ | |
11900 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11901 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11902 | + 1 /* trailing zero */) |
11903 | ||
11904 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11905 | |
73869dc2 | 11906 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11907 | { |
11908 | asection *sectp; | |
11909 | uint32_t section_nr = | |
11910 | read_4_bytes (dbfd, | |
73869dc2 DE |
11911 | dwp_htab->section_pool.v1.indices |
11912 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11913 | |
11914 | if (section_nr == 0) | |
11915 | break; | |
11916 | if (section_nr >= dwp_file->num_sections) | |
11917 | { | |
11918 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11919 | " [in module %s]"), | |
11920 | dwp_file->name); | |
11921 | } | |
11922 | ||
11923 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11924 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11925 | { |
11926 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11927 | " [in module %s]"), | |
11928 | dwp_file->name); | |
11929 | } | |
11930 | } | |
11931 | ||
11932 | if (i < 2 | |
96b79293 TT |
11933 | || sections.info_or_types.empty () |
11934 | || sections.abbrev.empty ()) | |
80626a55 DE |
11935 | { |
11936 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11937 | " [in module %s]"), | |
11938 | dwp_file->name); | |
11939 | } | |
73869dc2 | 11940 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11941 | { |
11942 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11943 | " [in module %s]"), | |
11944 | dwp_file->name); | |
11945 | } | |
11946 | ||
11947 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11948 | have dwo_unit "live" in that. At least for now. | |
11949 | ||
11950 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11951 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11952 | file, we can combine them back into a virtual DWO file to save space |
11953 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11954 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11955 | ||
791afaa2 TT |
11956 | std::string virtual_dwo_name = |
11957 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11958 | sections.abbrev.get_id (), |
11959 | sections.line.get_id (), | |
11960 | sections.loc.get_id (), | |
11961 | sections.str_offsets.get_id ()); | |
80626a55 | 11962 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 11963 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 11964 | comp_dir); |
80626a55 DE |
11965 | /* Create one if necessary. */ |
11966 | if (*dwo_file_slot == NULL) | |
11967 | { | |
b4f54984 | 11968 | if (dwarf_read_debug) |
80626a55 DE |
11969 | { |
11970 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11971 | virtual_dwo_name.c_str ()); |
80626a55 | 11972 | } |
51ac9db5 | 11973 | dwo_file = new struct dwo_file; |
976ca316 | 11974 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 11975 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11976 | dwo_file->sections.abbrev = sections.abbrev; |
11977 | dwo_file->sections.line = sections.line; | |
11978 | dwo_file->sections.loc = sections.loc; | |
11979 | dwo_file->sections.macinfo = sections.macinfo; | |
11980 | dwo_file->sections.macro = sections.macro; | |
11981 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11982 | /* The "str" section is global to the entire DWP file. */ | |
11983 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11984 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11985 | there's no need to record it in dwo_file. |
11986 | Also, we can't simply record type sections in dwo_file because | |
11987 | we record a pointer into the vector in dwo_unit. As we collect more | |
11988 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11989 | for it, invalidating all copies of pointers into the previous |
11990 | contents. */ | |
80626a55 DE |
11991 | *dwo_file_slot = dwo_file; |
11992 | } | |
11993 | else | |
11994 | { | |
b4f54984 | 11995 | if (dwarf_read_debug) |
80626a55 DE |
11996 | { |
11997 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11998 | virtual_dwo_name.c_str ()); |
80626a55 | 11999 | } |
9a3c8263 | 12000 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12001 | } |
80626a55 | 12002 | |
976ca316 | 12003 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
12004 | dwo_unit->dwo_file = dwo_file; |
12005 | dwo_unit->signature = signature; | |
8d749320 | 12006 | dwo_unit->section = |
976ca316 | 12007 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 12008 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12009 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12010 | |
12011 | return dwo_unit; | |
12012 | } | |
12013 | ||
73869dc2 DE |
12014 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12015 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12016 | piece within that section used by a TU/CU, return a virtual section | |
12017 | of just that piece. */ | |
12018 | ||
12019 | static struct dwarf2_section_info | |
976ca316 | 12020 | create_dwp_v2_section (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12021 | struct dwarf2_section_info *section, |
73869dc2 DE |
12022 | bfd_size_type offset, bfd_size_type size) |
12023 | { | |
12024 | struct dwarf2_section_info result; | |
12025 | asection *sectp; | |
12026 | ||
12027 | gdb_assert (section != NULL); | |
12028 | gdb_assert (!section->is_virtual); | |
12029 | ||
12030 | memset (&result, 0, sizeof (result)); | |
12031 | result.s.containing_section = section; | |
dc4ccb6f | 12032 | result.is_virtual = true; |
73869dc2 DE |
12033 | |
12034 | if (size == 0) | |
12035 | return result; | |
12036 | ||
96b79293 | 12037 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12038 | |
12039 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12040 | bounds of the real section. This is a pretty-rare event, so just | |
12041 | flag an error (easier) instead of a warning and trying to cope. */ | |
12042 | if (sectp == NULL | |
fd361982 | 12043 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12044 | { |
73869dc2 DE |
12045 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12046 | " in section %s [in module %s]"), | |
fd361982 | 12047 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 12048 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
12049 | } |
12050 | ||
12051 | result.virtual_offset = offset; | |
12052 | result.size = size; | |
12053 | return result; | |
12054 | } | |
12055 | ||
12056 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12057 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12058 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12059 | This is for DWP version 2 files. */ | |
12060 | ||
12061 | static struct dwo_unit * | |
976ca316 | 12062 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12063 | struct dwp_file *dwp_file, |
73869dc2 DE |
12064 | uint32_t unit_index, |
12065 | const char *comp_dir, | |
12066 | ULONGEST signature, int is_debug_types) | |
12067 | { | |
73869dc2 DE |
12068 | const struct dwp_hash_table *dwp_htab = |
12069 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12070 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12071 | const char *kind = is_debug_types ? "TU" : "CU"; |
12072 | struct dwo_file *dwo_file; | |
12073 | struct dwo_unit *dwo_unit; | |
12074 | struct virtual_v2_dwo_sections sections; | |
12075 | void **dwo_file_slot; | |
73869dc2 DE |
12076 | int i; |
12077 | ||
12078 | gdb_assert (dwp_file->version == 2); | |
12079 | ||
b4f54984 | 12080 | if (dwarf_read_debug) |
73869dc2 DE |
12081 | { |
12082 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12083 | kind, | |
12084 | pulongest (unit_index), hex_string (signature), | |
12085 | dwp_file->name); | |
12086 | } | |
12087 | ||
12088 | /* Fetch the section offsets of this DWO unit. */ | |
12089 | ||
12090 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12091 | |
12092 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12093 | { | |
12094 | uint32_t offset = read_4_bytes (dbfd, | |
12095 | dwp_htab->section_pool.v2.offsets | |
12096 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12097 | + i) | |
12098 | * sizeof (uint32_t))); | |
12099 | uint32_t size = read_4_bytes (dbfd, | |
12100 | dwp_htab->section_pool.v2.sizes | |
12101 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12102 | + i) | |
12103 | * sizeof (uint32_t))); | |
12104 | ||
12105 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12106 | { | |
12107 | case DW_SECT_INFO: | |
12108 | case DW_SECT_TYPES: | |
12109 | sections.info_or_types_offset = offset; | |
12110 | sections.info_or_types_size = size; | |
12111 | break; | |
12112 | case DW_SECT_ABBREV: | |
12113 | sections.abbrev_offset = offset; | |
12114 | sections.abbrev_size = size; | |
12115 | break; | |
12116 | case DW_SECT_LINE: | |
12117 | sections.line_offset = offset; | |
12118 | sections.line_size = size; | |
12119 | break; | |
12120 | case DW_SECT_LOC: | |
12121 | sections.loc_offset = offset; | |
12122 | sections.loc_size = size; | |
12123 | break; | |
12124 | case DW_SECT_STR_OFFSETS: | |
12125 | sections.str_offsets_offset = offset; | |
12126 | sections.str_offsets_size = size; | |
12127 | break; | |
12128 | case DW_SECT_MACINFO: | |
12129 | sections.macinfo_offset = offset; | |
12130 | sections.macinfo_size = size; | |
12131 | break; | |
12132 | case DW_SECT_MACRO: | |
12133 | sections.macro_offset = offset; | |
12134 | sections.macro_size = size; | |
12135 | break; | |
12136 | } | |
12137 | } | |
12138 | ||
12139 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12140 | have dwo_unit "live" in that. At least for now. | |
12141 | ||
12142 | The DWP file can be made up of a random collection of CUs and TUs. | |
12143 | However, for each CU + set of TUs that came from the same original DWO | |
12144 | file, we can combine them back into a virtual DWO file to save space | |
12145 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12146 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12147 | ||
791afaa2 TT |
12148 | std::string virtual_dwo_name = |
12149 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12150 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12151 | (long) (sections.line_size ? sections.line_offset : 0), | |
12152 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12153 | (long) (sections.str_offsets_size | |
12154 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12155 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12156 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12157 | comp_dir); |
73869dc2 DE |
12158 | /* Create one if necessary. */ |
12159 | if (*dwo_file_slot == NULL) | |
12160 | { | |
b4f54984 | 12161 | if (dwarf_read_debug) |
73869dc2 DE |
12162 | { |
12163 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12164 | virtual_dwo_name.c_str ()); |
73869dc2 | 12165 | } |
51ac9db5 | 12166 | dwo_file = new struct dwo_file; |
976ca316 | 12167 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12168 | dwo_file->comp_dir = comp_dir; |
12169 | dwo_file->sections.abbrev = | |
976ca316 | 12170 | create_dwp_v2_section (per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12171 | sections.abbrev_offset, sections.abbrev_size); |
12172 | dwo_file->sections.line = | |
976ca316 | 12173 | create_dwp_v2_section (per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12174 | sections.line_offset, sections.line_size); |
12175 | dwo_file->sections.loc = | |
976ca316 | 12176 | create_dwp_v2_section (per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12177 | sections.loc_offset, sections.loc_size); |
12178 | dwo_file->sections.macinfo = | |
976ca316 | 12179 | create_dwp_v2_section (per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12180 | sections.macinfo_offset, sections.macinfo_size); |
12181 | dwo_file->sections.macro = | |
976ca316 | 12182 | create_dwp_v2_section (per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12183 | sections.macro_offset, sections.macro_size); |
12184 | dwo_file->sections.str_offsets = | |
976ca316 | 12185 | create_dwp_v2_section (per_objfile, |
ed2dc618 | 12186 | &dwp_file->sections.str_offsets, |
73869dc2 DE |
12187 | sections.str_offsets_offset, |
12188 | sections.str_offsets_size); | |
12189 | /* The "str" section is global to the entire DWP file. */ | |
12190 | dwo_file->sections.str = dwp_file->sections.str; | |
12191 | /* The info or types section is assigned below to dwo_unit, | |
12192 | there's no need to record it in dwo_file. | |
12193 | Also, we can't simply record type sections in dwo_file because | |
12194 | we record a pointer into the vector in dwo_unit. As we collect more | |
12195 | types we'll grow the vector and eventually have to reallocate space | |
12196 | for it, invalidating all copies of pointers into the previous | |
12197 | contents. */ | |
12198 | *dwo_file_slot = dwo_file; | |
12199 | } | |
12200 | else | |
12201 | { | |
b4f54984 | 12202 | if (dwarf_read_debug) |
73869dc2 DE |
12203 | { |
12204 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12205 | virtual_dwo_name.c_str ()); |
73869dc2 | 12206 | } |
9a3c8263 | 12207 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12208 | } |
73869dc2 | 12209 | |
976ca316 | 12210 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12211 | dwo_unit->dwo_file = dwo_file; |
12212 | dwo_unit->signature = signature; | |
8d749320 | 12213 | dwo_unit->section = |
976ca316 SM |
12214 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
12215 | *dwo_unit->section = create_dwp_v2_section (per_objfile, | |
ed2dc618 | 12216 | is_debug_types |
73869dc2 DE |
12217 | ? &dwp_file->sections.types |
12218 | : &dwp_file->sections.info, | |
12219 | sections.info_or_types_offset, | |
12220 | sections.info_or_types_size); | |
12221 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12222 | ||
12223 | return dwo_unit; | |
12224 | } | |
12225 | ||
57d63ce2 DE |
12226 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12227 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12228 | |
12229 | static struct dwo_unit * | |
976ca316 | 12230 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12231 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12232 | ULONGEST signature, int is_debug_types) |
80626a55 | 12233 | { |
57d63ce2 DE |
12234 | const struct dwp_hash_table *dwp_htab = |
12235 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12236 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12237 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12238 | uint32_t hash = signature & mask; |
12239 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12240 | unsigned int i; | |
12241 | void **slot; | |
870f88f7 | 12242 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12243 | |
12244 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12245 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12246 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12247 | ? dwp_file->loaded_tus.get () |
12248 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12249 | &find_dwo_cu, INSERT); |
80626a55 DE |
12250 | |
12251 | if (*slot != NULL) | |
9a3c8263 | 12252 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12253 | |
12254 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12255 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12256 | { |
12257 | ULONGEST signature_in_table; | |
12258 | ||
12259 | signature_in_table = | |
57d63ce2 | 12260 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12261 | if (signature_in_table == signature) |
12262 | { | |
57d63ce2 DE |
12263 | uint32_t unit_index = |
12264 | read_4_bytes (dbfd, | |
12265 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12266 | |
73869dc2 DE |
12267 | if (dwp_file->version == 1) |
12268 | { | |
976ca316 SM |
12269 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12270 | unit_index, comp_dir, | |
12271 | signature, is_debug_types); | |
73869dc2 DE |
12272 | } |
12273 | else | |
12274 | { | |
976ca316 SM |
12275 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12276 | unit_index, comp_dir, | |
12277 | signature, is_debug_types); | |
73869dc2 | 12278 | } |
9a3c8263 | 12279 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12280 | } |
12281 | if (signature_in_table == 0) | |
12282 | return NULL; | |
12283 | hash = (hash + hash2) & mask; | |
12284 | } | |
12285 | ||
12286 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12287 | " [in module %s]"), | |
12288 | dwp_file->name); | |
12289 | } | |
12290 | ||
ab5088bf | 12291 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12292 | Open the file specified by FILE_NAME and hand it off to BFD for |
12293 | preliminary analysis. Return a newly initialized bfd *, which | |
12294 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12295 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12296 | SEARCH_CWD is true if the current directory is to be searched. |
12297 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12298 | If successful, the file is added to the bfd include table of the |
12299 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12300 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12301 | NOTE: This function is derived from symfile_bfd_open. */ |
12302 | ||
192b62ce | 12303 | static gdb_bfd_ref_ptr |
976ca316 | 12304 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12305 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12306 | { |
24b9144d | 12307 | int desc; |
9c02c129 DE |
12308 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12309 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12310 | to debug_file_directory. */ | |
e0cc99a6 | 12311 | const char *search_path; |
9c02c129 DE |
12312 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12313 | ||
e0cc99a6 | 12314 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12315 | if (search_cwd) |
12316 | { | |
12317 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12318 | { |
12319 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12320 | debug_file_directory, | |
12321 | (char *) NULL)); | |
12322 | search_path = search_path_holder.get (); | |
12323 | } | |
6ac97d4c | 12324 | else |
e0cc99a6 | 12325 | search_path = "."; |
6ac97d4c | 12326 | } |
9c02c129 | 12327 | else |
e0cc99a6 | 12328 | search_path = debug_file_directory; |
3019eac3 | 12329 | |
24b9144d | 12330 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12331 | if (is_dwp) |
12332 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12333 | |
12334 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12335 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12336 | O_RDONLY | O_BINARY, &absolute_name); |
12337 | if (desc < 0) | |
12338 | return NULL; | |
12339 | ||
e0cc99a6 TT |
12340 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12341 | gnutarget, desc)); | |
9c02c129 DE |
12342 | if (sym_bfd == NULL) |
12343 | return NULL; | |
192b62ce | 12344 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12345 | |
192b62ce TT |
12346 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12347 | return NULL; | |
3019eac3 | 12348 | |
13aaf454 DE |
12349 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12350 | This is important because things like demangled_names_hash lives in the | |
12351 | objfile's per_bfd space and may have references to things like symbol | |
12352 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12353 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12354 | |
3019eac3 DE |
12355 | return sym_bfd; |
12356 | } | |
12357 | ||
ab5088bf | 12358 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12359 | COMP_DIR is the DW_AT_comp_dir attribute. |
12360 | The result is the bfd handle of the file. | |
12361 | If there is a problem finding or opening the file, return NULL. | |
12362 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12363 | same as symfile_bfd_open. */ | |
12364 | ||
192b62ce | 12365 | static gdb_bfd_ref_ptr |
976ca316 | 12366 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12367 | const char *file_name, const char *comp_dir) |
3019eac3 | 12368 | { |
80626a55 | 12369 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12370 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12371 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12372 | |
12373 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12374 | ||
12375 | if (comp_dir != NULL) | |
12376 | { | |
43816ebc TT |
12377 | gdb::unique_xmalloc_ptr<char> path_to_try |
12378 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12379 | |
12380 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12381 | search path, which seems useful. */ | |
976ca316 | 12382 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12383 | 0 /*is_dwp*/, |
192b62ce | 12384 | 1 /*search_cwd*/)); |
3019eac3 DE |
12385 | if (abfd != NULL) |
12386 | return abfd; | |
12387 | } | |
12388 | ||
12389 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12390 | is a list of paths. */ | |
12391 | ||
12392 | if (*debug_file_directory == '\0') | |
12393 | return NULL; | |
12394 | ||
976ca316 | 12395 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12396 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12397 | } |
12398 | ||
80626a55 DE |
12399 | /* This function is mapped across the sections and remembers the offset and |
12400 | size of each of the DWO debugging sections we are interested in. */ | |
12401 | ||
12402 | static void | |
12403 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12404 | { | |
9a3c8263 | 12405 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12406 | const struct dwop_section_names *names = &dwop_section_names; |
12407 | ||
12408 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12409 | { | |
049412e3 | 12410 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12411 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12412 | } |
12413 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12414 | { | |
049412e3 | 12415 | dwo_sections->info.s.section = sectp; |
fd361982 | 12416 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12417 | } |
12418 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12419 | { | |
049412e3 | 12420 | dwo_sections->line.s.section = sectp; |
fd361982 | 12421 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12422 | } |
12423 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12424 | { | |
049412e3 | 12425 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12426 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12427 | } |
41144253 | 12428 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12429 | { | |
12430 | dwo_sections->loclists.s.section = sectp; | |
12431 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12432 | } | |
80626a55 DE |
12433 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12434 | { | |
049412e3 | 12435 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12436 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12437 | } |
12438 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12439 | { | |
049412e3 | 12440 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12441 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12442 | } |
12443 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12444 | { | |
049412e3 | 12445 | dwo_sections->str.s.section = sectp; |
fd361982 | 12446 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12447 | } |
12448 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12449 | { | |
049412e3 | 12450 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12451 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12452 | } |
12453 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12454 | { | |
12455 | struct dwarf2_section_info type_section; | |
12456 | ||
12457 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12458 | type_section.s.section = sectp; |
fd361982 | 12459 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12460 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12461 | } |
12462 | } | |
12463 | ||
ab5088bf | 12464 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12465 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12466 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12467 | |
12468 | static struct dwo_file * | |
4ab09049 SM |
12469 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12470 | const char *comp_dir) | |
3019eac3 | 12471 | { |
976ca316 | 12472 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12473 | |
976ca316 | 12474 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12475 | if (dbfd == NULL) |
12476 | { | |
b4f54984 | 12477 | if (dwarf_read_debug) |
80626a55 DE |
12478 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12479 | return NULL; | |
12480 | } | |
263db9a1 | 12481 | |
51ac9db5 | 12482 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12483 | dwo_file->dwo_name = dwo_name; |
12484 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12485 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12486 | |
fb1eb2f9 | 12487 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12488 | &dwo_file->sections); |
3019eac3 | 12489 | |
976ca316 SM |
12490 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12491 | dwo_file->cus); | |
3019eac3 | 12492 | |
976ca316 | 12493 | create_debug_types_hash_table (per_objfile, dwo_file.get (), |
ed2dc618 | 12494 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12495 | |
b4f54984 | 12496 | if (dwarf_read_debug) |
80626a55 DE |
12497 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12498 | ||
263db9a1 | 12499 | return dwo_file.release (); |
3019eac3 DE |
12500 | } |
12501 | ||
80626a55 | 12502 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12503 | size of each of the DWP debugging sections common to version 1 and 2 that |
12504 | we are interested in. */ | |
3019eac3 | 12505 | |
80626a55 | 12506 | static void |
73869dc2 DE |
12507 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12508 | void *dwp_file_ptr) | |
3019eac3 | 12509 | { |
9a3c8263 | 12510 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12511 | const struct dwop_section_names *names = &dwop_section_names; |
12512 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12513 | |
80626a55 | 12514 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12515 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12516 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12517 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12518 | |
80626a55 DE |
12519 | /* Look for specific sections that we need. */ |
12520 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12521 | { | |
049412e3 | 12522 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12523 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12524 | } |
12525 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12526 | { | |
049412e3 | 12527 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12528 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12529 | } |
12530 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12531 | { | |
049412e3 | 12532 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12533 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12534 | } |
12535 | } | |
3019eac3 | 12536 | |
73869dc2 DE |
12537 | /* This function is mapped across the sections and remembers the offset and |
12538 | size of each of the DWP version 2 debugging sections that we are interested | |
12539 | in. This is split into a separate function because we don't know if we | |
12540 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12541 | ||
12542 | static void | |
12543 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12544 | { | |
9a3c8263 | 12545 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12546 | const struct dwop_section_names *names = &dwop_section_names; |
12547 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12548 | ||
12549 | /* Record the ELF section number for later lookup: this is what the | |
12550 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12551 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12552 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12553 | ||
12554 | /* Look for specific sections that we need. */ | |
12555 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12556 | { | |
049412e3 | 12557 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12558 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12559 | } |
12560 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12561 | { | |
049412e3 | 12562 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12563 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12564 | } |
12565 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12566 | { | |
049412e3 | 12567 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12568 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12569 | } |
12570 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12571 | { | |
049412e3 | 12572 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12573 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12574 | } |
12575 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12576 | { | |
049412e3 | 12577 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12578 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12579 | } |
12580 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12581 | { | |
049412e3 | 12582 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12583 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12584 | } |
12585 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12586 | { | |
049412e3 | 12587 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12588 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12589 | } |
12590 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12591 | { | |
049412e3 | 12592 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12593 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12594 | } |
12595 | } | |
12596 | ||
80626a55 | 12597 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12598 | |
80626a55 DE |
12599 | static hashval_t |
12600 | hash_dwp_loaded_cutus (const void *item) | |
12601 | { | |
9a3c8263 | 12602 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12603 | |
80626a55 DE |
12604 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12605 | return dwo_unit->signature; | |
3019eac3 DE |
12606 | } |
12607 | ||
80626a55 | 12608 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12609 | |
80626a55 DE |
12610 | static int |
12611 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12612 | { |
9a3c8263 SM |
12613 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12614 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12615 | |
80626a55 DE |
12616 | return dua->signature == dub->signature; |
12617 | } | |
3019eac3 | 12618 | |
80626a55 | 12619 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12620 | |
48b490f2 | 12621 | static htab_up |
298e9637 | 12622 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12623 | { |
48b490f2 TT |
12624 | return htab_up (htab_create_alloc (3, |
12625 | hash_dwp_loaded_cutus, | |
12626 | eq_dwp_loaded_cutus, | |
12627 | NULL, xcalloc, xfree)); | |
80626a55 | 12628 | } |
3019eac3 | 12629 | |
ab5088bf DE |
12630 | /* Try to open DWP file FILE_NAME. |
12631 | The result is the bfd handle of the file. | |
12632 | If there is a problem finding or opening the file, return NULL. | |
12633 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12634 | same as symfile_bfd_open. */ | |
12635 | ||
192b62ce | 12636 | static gdb_bfd_ref_ptr |
976ca316 | 12637 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 12638 | { |
976ca316 | 12639 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12640 | 1 /*is_dwp*/, |
192b62ce | 12641 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12642 | if (abfd != NULL) |
12643 | return abfd; | |
12644 | ||
12645 | /* Work around upstream bug 15652. | |
12646 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12647 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12648 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12649 | of the executable's path may have discarded the needed info. | |
12650 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12651 | .gnu_debuglink, but that doesn't exist yet.] | |
12652 | Strip the directory from FILE_NAME and search again. */ | |
12653 | if (*debug_file_directory != '\0') | |
12654 | { | |
12655 | /* Don't implicitly search the current directory here. | |
12656 | If the user wants to search "." to handle this case, | |
12657 | it must be added to debug-file-directory. */ | |
976ca316 SM |
12658 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
12659 | 1 /*is_dwp*/, | |
6ac97d4c DE |
12660 | 0 /*search_cwd*/); |
12661 | } | |
12662 | ||
12663 | return NULL; | |
ab5088bf DE |
12664 | } |
12665 | ||
80626a55 DE |
12666 | /* Initialize the use of the DWP file for the current objfile. |
12667 | By convention the name of the DWP file is ${objfile}.dwp. | |
12668 | The result is NULL if it can't be found. */ | |
a766d390 | 12669 | |
400174b1 | 12670 | static std::unique_ptr<struct dwp_file> |
976ca316 | 12671 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 12672 | { |
976ca316 | 12673 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 12674 | |
82bf32bc JK |
12675 | /* Try to find first .dwp for the binary file before any symbolic links |
12676 | resolving. */ | |
6c447423 DE |
12677 | |
12678 | /* If the objfile is a debug file, find the name of the real binary | |
12679 | file and get the name of dwp file from there. */ | |
d721ba37 | 12680 | std::string dwp_name; |
6c447423 DE |
12681 | if (objfile->separate_debug_objfile_backlink != NULL) |
12682 | { | |
12683 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12684 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12685 | |
d721ba37 | 12686 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12687 | } |
12688 | else | |
d721ba37 PA |
12689 | dwp_name = objfile->original_name; |
12690 | ||
12691 | dwp_name += ".dwp"; | |
80626a55 | 12692 | |
976ca316 | 12693 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12694 | if (dbfd == NULL |
12695 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12696 | { | |
12697 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12698 | dwp_name = objfile_name (objfile); |
12699 | dwp_name += ".dwp"; | |
976ca316 | 12700 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12701 | } |
12702 | ||
80626a55 DE |
12703 | if (dbfd == NULL) |
12704 | { | |
b4f54984 | 12705 | if (dwarf_read_debug) |
d721ba37 | 12706 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12707 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12708 | } |
400174b1 TT |
12709 | |
12710 | const char *name = bfd_get_filename (dbfd.get ()); | |
12711 | std::unique_ptr<struct dwp_file> dwp_file | |
12712 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12713 | |
0a0f4c01 | 12714 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 12715 | dwp_file->elf_sections = |
976ca316 | 12716 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
12717 | dwp_file->num_sections, asection *); |
12718 | ||
400174b1 TT |
12719 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12720 | dwarf2_locate_common_dwp_sections, | |
12721 | dwp_file.get ()); | |
80626a55 | 12722 | |
976ca316 | 12723 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 12724 | |
976ca316 | 12725 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 12726 | |
73869dc2 | 12727 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12728 | if (dwp_file->cus && dwp_file->tus |
12729 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12730 | { |
12731 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12732 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12733 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12734 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12735 | " TU version %s [in DWP file %s]"), | |
12736 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12737 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12738 | } |
08302ed2 DE |
12739 | |
12740 | if (dwp_file->cus) | |
12741 | dwp_file->version = dwp_file->cus->version; | |
12742 | else if (dwp_file->tus) | |
12743 | dwp_file->version = dwp_file->tus->version; | |
12744 | else | |
12745 | dwp_file->version = 2; | |
73869dc2 DE |
12746 | |
12747 | if (dwp_file->version == 2) | |
400174b1 TT |
12748 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12749 | dwarf2_locate_v2_dwp_sections, | |
12750 | dwp_file.get ()); | |
73869dc2 | 12751 | |
298e9637 SM |
12752 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12753 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12754 | |
b4f54984 | 12755 | if (dwarf_read_debug) |
80626a55 DE |
12756 | { |
12757 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12758 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12759 | " %s CUs, %s TUs\n", |
12760 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12761 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12762 | } |
12763 | ||
12764 | return dwp_file; | |
3019eac3 | 12765 | } |
c906108c | 12766 | |
ab5088bf DE |
12767 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12768 | ||
12769 | static struct dwp_file * | |
976ca316 | 12770 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 12771 | { |
976ca316 | 12772 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 12773 | { |
976ca316 SM |
12774 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
12775 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 12776 | } |
976ca316 | 12777 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
12778 | } |
12779 | ||
80626a55 DE |
12780 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12781 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12782 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12783 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12784 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12785 | ||
12786 | This is called, for example, when wanting to read a variable with a | |
12787 | complex location. Therefore we don't want to do file i/o for every call. | |
12788 | Therefore we don't want to look for a DWO file on every call. | |
12789 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12790 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12791 | for a DWO file. | |
12792 | ||
1c658ad5 | 12793 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12794 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12795 | |
3019eac3 | 12796 | static struct dwo_unit * |
4ab09049 | 12797 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 12798 | ULONGEST signature, int is_debug_types) |
3019eac3 | 12799 | { |
976ca316 SM |
12800 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
12801 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
12802 | const char *kind = is_debug_types ? "TU" : "CU"; |
12803 | void **dwo_file_slot; | |
3019eac3 | 12804 | struct dwo_file *dwo_file; |
80626a55 | 12805 | struct dwp_file *dwp_file; |
cb1df416 | 12806 | |
6a506a2d DE |
12807 | /* First see if there's a DWP file. |
12808 | If we have a DWP file but didn't find the DWO inside it, don't | |
12809 | look for the original DWO file. It makes gdb behave differently | |
12810 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12811 | |
976ca316 | 12812 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 12813 | if (dwp_file != NULL) |
cf2c3c16 | 12814 | { |
80626a55 DE |
12815 | const struct dwp_hash_table *dwp_htab = |
12816 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12817 | ||
12818 | if (dwp_htab != NULL) | |
12819 | { | |
12820 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
12821 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
12822 | is_debug_types); | |
80626a55 DE |
12823 | |
12824 | if (dwo_cutu != NULL) | |
12825 | { | |
b4f54984 | 12826 | if (dwarf_read_debug) |
80626a55 DE |
12827 | { |
12828 | fprintf_unfiltered (gdb_stdlog, | |
12829 | "Virtual DWO %s %s found: @%s\n", | |
12830 | kind, hex_string (signature), | |
12831 | host_address_to_string (dwo_cutu)); | |
12832 | } | |
12833 | return dwo_cutu; | |
12834 | } | |
12835 | } | |
12836 | } | |
6a506a2d | 12837 | else |
80626a55 | 12838 | { |
6a506a2d | 12839 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12840 | |
976ca316 | 12841 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 12842 | if (*dwo_file_slot == NULL) |
80626a55 | 12843 | { |
6a506a2d | 12844 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 12845 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 12846 | } |
6a506a2d | 12847 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12848 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12849 | |
6a506a2d | 12850 | if (dwo_file != NULL) |
19c3d4c9 | 12851 | { |
6a506a2d DE |
12852 | struct dwo_unit *dwo_cutu = NULL; |
12853 | ||
12854 | if (is_debug_types && dwo_file->tus) | |
12855 | { | |
12856 | struct dwo_unit find_dwo_cutu; | |
12857 | ||
12858 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12859 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12860 | dwo_cutu |
b0b6a987 TT |
12861 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12862 | &find_dwo_cutu); | |
6a506a2d | 12863 | } |
33c5cd75 | 12864 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12865 | { |
33c5cd75 DB |
12866 | struct dwo_unit find_dwo_cutu; |
12867 | ||
12868 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12869 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12870 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12871 | &find_dwo_cutu); |
6a506a2d DE |
12872 | } |
12873 | ||
12874 | if (dwo_cutu != NULL) | |
12875 | { | |
b4f54984 | 12876 | if (dwarf_read_debug) |
6a506a2d DE |
12877 | { |
12878 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
12879 | kind, dwo_name, hex_string (signature), | |
12880 | host_address_to_string (dwo_cutu)); | |
12881 | } | |
12882 | return dwo_cutu; | |
80626a55 DE |
12883 | } |
12884 | } | |
2e276125 | 12885 | } |
9cdd5dbd | 12886 | |
80626a55 DE |
12887 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12888 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12889 | correctly to find the file. */ | |
12890 | ||
b4f54984 | 12891 | if (dwarf_read_debug) |
80626a55 DE |
12892 | { |
12893 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
12894 | kind, dwo_name, hex_string (signature)); | |
12895 | } | |
3019eac3 | 12896 | |
6656a72d DE |
12897 | /* This is a warning and not a complaint because it can be caused by |
12898 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12899 | { |
12900 | /* Print the name of the DWP file if we looked there, helps the user | |
12901 | better diagnose the problem. */ | |
791afaa2 | 12902 | std::string dwp_text; |
43942612 DE |
12903 | |
12904 | if (dwp_file != NULL) | |
791afaa2 TT |
12905 | dwp_text = string_printf (" [in DWP file %s]", |
12906 | lbasename (dwp_file->name)); | |
43942612 | 12907 | |
9d8780f0 | 12908 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 12909 | " [in module %s]"), |
4ab09049 SM |
12910 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
12911 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 12912 | } |
3019eac3 | 12913 | return NULL; |
5fb290d7 DJ |
12914 | } |
12915 | ||
80626a55 DE |
12916 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12917 | See lookup_dwo_cutu_unit for details. */ | |
12918 | ||
12919 | static struct dwo_unit * | |
4ab09049 | 12920 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
12921 | ULONGEST signature) |
12922 | { | |
4ab09049 SM |
12923 | gdb_assert (!cu->per_cu->is_debug_types); |
12924 | ||
12925 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
12926 | } |
12927 | ||
12928 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12929 | See lookup_dwo_cutu_unit for details. */ | |
12930 | ||
12931 | static struct dwo_unit * | |
4ab09049 | 12932 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 12933 | { |
4ab09049 SM |
12934 | gdb_assert (cu->per_cu->is_debug_types); |
12935 | ||
12936 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
12937 | ||
12938 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
12939 | } |
12940 | ||
89e63ee4 DE |
12941 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12942 | ||
12943 | static int | |
12944 | queue_and_load_dwo_tu (void **slot, void *info) | |
12945 | { | |
12946 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 12947 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 12948 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 12949 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
12950 | |
12951 | if (sig_type != NULL) | |
12952 | { | |
12953 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
12954 | ||
12955 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
12956 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12957 | while processing PER_CU. */ | |
120ce1b5 | 12958 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
12959 | load_full_type_unit (sig_cu, cu->per_objfile); |
12960 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
12961 | } |
12962 | ||
12963 | return 1; | |
12964 | } | |
12965 | ||
1b555f17 | 12966 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
12967 | The DWO may have the only definition of the type, though it may not be |
12968 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12969 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12970 | ||
12971 | static void | |
1b555f17 | 12972 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
12973 | { |
12974 | struct dwo_unit *dwo_unit; | |
12975 | struct dwo_file *dwo_file; | |
12976 | ||
1b555f17 SM |
12977 | gdb_assert (cu != nullptr); |
12978 | gdb_assert (!cu->per_cu->is_debug_types); | |
12979 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 12980 | |
1b555f17 | 12981 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
12982 | gdb_assert (dwo_unit != NULL); |
12983 | ||
12984 | dwo_file = dwo_unit->dwo_file; | |
12985 | if (dwo_file->tus != NULL) | |
1b555f17 | 12986 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
12987 | } |
12988 | ||
3019eac3 | 12989 | /* Read in various DIEs. */ |
348e048f | 12990 | |
d389af10 | 12991 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12992 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12993 | already referenced by DW_AT_abstract_origin from the children of the | |
12994 | current DIE. */ | |
d389af10 JK |
12995 | |
12996 | static void | |
12997 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
12998 | { | |
12999 | struct die_info *child_die; | |
791afaa2 | 13000 | sect_offset *offsetp; |
d389af10 JK |
13001 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13002 | struct die_info *origin_die; | |
13003 | /* Iterator of the ORIGIN_DIE children. */ | |
13004 | struct die_info *origin_child_die; | |
d389af10 | 13005 | struct attribute *attr; |
cd02d79d PA |
13006 | struct dwarf2_cu *origin_cu; |
13007 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13008 | |
13009 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13010 | if (!attr) | |
13011 | return; | |
13012 | ||
cd02d79d PA |
13013 | /* Note that following die references may follow to a die in a |
13014 | different cu. */ | |
13015 | ||
13016 | origin_cu = cu; | |
13017 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13018 | ||
13019 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13020 | symbols in. */ | |
13021 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13022 | origin_cu->list_in_scope = cu->list_in_scope; | |
13023 | ||
edb3359d DJ |
13024 | if (die->tag != origin_die->tag |
13025 | && !(die->tag == DW_TAG_inlined_subroutine | |
13026 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13027 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13028 | sect_offset_str (die->sect_off), |
13029 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13030 | |
791afaa2 | 13031 | std::vector<sect_offset> offsets; |
d389af10 | 13032 | |
3ea89b92 PMR |
13033 | for (child_die = die->child; |
13034 | child_die && child_die->tag; | |
436c571c | 13035 | child_die = child_die->sibling) |
3ea89b92 PMR |
13036 | { |
13037 | struct die_info *child_origin_die; | |
13038 | struct dwarf2_cu *child_origin_cu; | |
13039 | ||
13040 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13041 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13042 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13043 | present in the abstract instance but not referenced in the concrete | |
13044 | one. */ | |
216f72a1 JK |
13045 | if (child_die->tag == DW_TAG_call_site |
13046 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13047 | continue; |
13048 | ||
c38f313d DJ |
13049 | /* For each CHILD_DIE, find the corresponding child of |
13050 | ORIGIN_DIE. If there is more than one layer of | |
13051 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13052 | but GCC versions at least through 4.4 generate this (GCC PR | |
13053 | 40573). */ | |
3ea89b92 PMR |
13054 | child_origin_die = child_die; |
13055 | child_origin_cu = cu; | |
c38f313d DJ |
13056 | while (1) |
13057 | { | |
cd02d79d PA |
13058 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13059 | child_origin_cu); | |
c38f313d DJ |
13060 | if (attr == NULL) |
13061 | break; | |
cd02d79d PA |
13062 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13063 | &child_origin_cu); | |
c38f313d DJ |
13064 | } |
13065 | ||
d389af10 JK |
13066 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13067 | counterpart may exist. */ | |
c38f313d | 13068 | if (child_origin_die != child_die) |
d389af10 | 13069 | { |
edb3359d DJ |
13070 | if (child_die->tag != child_origin_die->tag |
13071 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13072 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13073 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13074 | "different tags"), |
9d8780f0 SM |
13075 | sect_offset_str (child_die->sect_off), |
13076 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13077 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13078 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13079 | "different parents"), |
9d8780f0 SM |
13080 | sect_offset_str (child_die->sect_off), |
13081 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13082 | else |
791afaa2 | 13083 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13084 | } |
d389af10 | 13085 | } |
791afaa2 TT |
13086 | std::sort (offsets.begin (), offsets.end ()); |
13087 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13088 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13089 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13090 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13091 | "to DIE %s as their abstract origin"), |
13092 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13093 | |
791afaa2 | 13094 | offsetp = offsets.data (); |
d389af10 JK |
13095 | origin_child_die = origin_die->child; |
13096 | while (origin_child_die && origin_child_die->tag) | |
13097 | { | |
13098 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13099 | while (offsetp < offsets_end |
9c541725 | 13100 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13101 | offsetp++; |
b64f50a1 | 13102 | if (offsetp >= offsets_end |
9c541725 | 13103 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13104 | { |
adde2bff DE |
13105 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13106 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13107 | This can happen with mutually referenced abstract_origins. | |
13108 | PR 16581. */ | |
13109 | if (!origin_child_die->in_process) | |
13110 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13111 | } |
436c571c | 13112 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13113 | } |
cd02d79d | 13114 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13115 | |
13116 | if (cu != origin_cu) | |
13117 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13118 | } |
13119 | ||
c906108c | 13120 | static void |
e7c27a73 | 13121 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13122 | { |
5e22e966 | 13123 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13124 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13125 | struct context_stack *newobj; |
c906108c SS |
13126 | CORE_ADDR lowpc; |
13127 | CORE_ADDR highpc; | |
13128 | struct die_info *child_die; | |
edb3359d | 13129 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13130 | const char *name; |
e142c38c | 13131 | CORE_ADDR baseaddr; |
801e3a5b | 13132 | struct block *block; |
edb3359d | 13133 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13134 | std::vector<struct symbol *> template_args; |
34eaf542 | 13135 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13136 | |
13137 | if (inlined_func) | |
13138 | { | |
13139 | /* If we do not have call site information, we can't show the | |
13140 | caller of this inlined function. That's too confusing, so | |
13141 | only use the scope for local variables. */ | |
13142 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13143 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13144 | if (call_line == NULL || call_file == NULL) | |
13145 | { | |
13146 | read_lexical_block_scope (die, cu); | |
13147 | return; | |
13148 | } | |
13149 | } | |
c906108c | 13150 | |
b3b3bada | 13151 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13152 | |
94af9270 | 13153 | name = dwarf2_name (die, cu); |
c906108c | 13154 | |
e8d05480 JB |
13155 | /* Ignore functions with missing or empty names. These are actually |
13156 | illegal according to the DWARF standard. */ | |
13157 | if (name == NULL) | |
13158 | { | |
b98664d3 | 13159 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13160 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13161 | return; |
13162 | } | |
13163 | ||
13164 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13165 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13166 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13167 | { |
ae4d0c03 PM |
13168 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13169 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13170 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13171 | "for subprogram DIE at %s"), |
13172 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13173 | return; |
13174 | } | |
c906108c | 13175 | |
3e29f34a MR |
13176 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13177 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13178 | |
34eaf542 TT |
13179 | /* If we have any template arguments, then we must allocate a |
13180 | different sort of symbol. */ | |
436c571c | 13181 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13182 | { |
13183 | if (child_die->tag == DW_TAG_template_type_param | |
13184 | || child_die->tag == DW_TAG_template_value_param) | |
13185 | { | |
8c14c3a3 | 13186 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13187 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13188 | break; |
13189 | } | |
13190 | } | |
13191 | ||
c24bdb02 | 13192 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13193 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13194 | (struct symbol *) templ_func); | |
4c2df51b | 13195 | |
81873cc8 | 13196 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13197 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13198 | cu->language); |
13199 | ||
4cecd739 DJ |
13200 | /* If there is a location expression for DW_AT_frame_base, record |
13201 | it. */ | |
e142c38c | 13202 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13203 | if (attr != nullptr) |
fe978cb0 | 13204 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13205 | |
63e43d3a PMR |
13206 | /* If there is a location for the static link, record it. */ |
13207 | newobj->static_link = NULL; | |
13208 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13209 | if (attr != nullptr) |
63e43d3a | 13210 | { |
224c3ddb SM |
13211 | newobj->static_link |
13212 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13213 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13214 | cu->addr_type ()); |
63e43d3a PMR |
13215 | } |
13216 | ||
c24bdb02 | 13217 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13218 | |
639d11d3 | 13219 | if (die->child != NULL) |
c906108c | 13220 | { |
639d11d3 | 13221 | child_die = die->child; |
c906108c SS |
13222 | while (child_die && child_die->tag) |
13223 | { | |
34eaf542 TT |
13224 | if (child_die->tag == DW_TAG_template_type_param |
13225 | || child_die->tag == DW_TAG_template_value_param) | |
13226 | { | |
13227 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13228 | ||
f1078f66 | 13229 | if (arg != NULL) |
2f4732b0 | 13230 | template_args.push_back (arg); |
34eaf542 TT |
13231 | } |
13232 | else | |
13233 | process_die (child_die, cu); | |
436c571c | 13234 | child_die = child_die->sibling; |
c906108c SS |
13235 | } |
13236 | } | |
13237 | ||
d389af10 JK |
13238 | inherit_abstract_dies (die, cu); |
13239 | ||
4a811a97 UW |
13240 | /* If we have a DW_AT_specification, we might need to import using |
13241 | directives from the context of the specification DIE. See the | |
13242 | comment in determine_prefix. */ | |
13243 | if (cu->language == language_cplus | |
13244 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13245 | { | |
13246 | struct dwarf2_cu *spec_cu = cu; | |
13247 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13248 | ||
13249 | while (spec_die) | |
13250 | { | |
13251 | child_die = spec_die->child; | |
13252 | while (child_die && child_die->tag) | |
13253 | { | |
13254 | if (child_die->tag == DW_TAG_imported_module) | |
13255 | process_die (child_die, spec_cu); | |
436c571c | 13256 | child_die = child_die->sibling; |
4a811a97 UW |
13257 | } |
13258 | ||
13259 | /* In some cases, GCC generates specification DIEs that | |
13260 | themselves contain DW_AT_specification attributes. */ | |
13261 | spec_die = die_specification (spec_die, &spec_cu); | |
13262 | } | |
13263 | } | |
13264 | ||
c24bdb02 | 13265 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13266 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13267 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13268 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13269 | |
df8a16a1 | 13270 | /* For C++, set the block's scope. */ |
45280282 IB |
13271 | if ((cu->language == language_cplus |
13272 | || cu->language == language_fortran | |
c44af4eb TT |
13273 | || cu->language == language_d |
13274 | || cu->language == language_rust) | |
4d4ec4e5 | 13275 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13276 | block_set_scope (block, determine_prefix (die, cu), |
13277 | &objfile->objfile_obstack); | |
df8a16a1 | 13278 | |
801e3a5b JB |
13279 | /* If we have address ranges, record them. */ |
13280 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13281 | |
a60f3166 | 13282 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13283 | |
34eaf542 | 13284 | /* Attach template arguments to function. */ |
2f4732b0 | 13285 | if (!template_args.empty ()) |
34eaf542 TT |
13286 | { |
13287 | gdb_assert (templ_func != NULL); | |
13288 | ||
2f4732b0 | 13289 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13290 | templ_func->template_arguments |
8d749320 SM |
13291 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13292 | templ_func->n_template_arguments); | |
34eaf542 | 13293 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13294 | template_args.data (), |
34eaf542 | 13295 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13296 | |
13297 | /* Make sure that the symtab is set on the new symbols. Even | |
13298 | though they don't appear in this symtab directly, other parts | |
13299 | of gdb assume that symbols do, and this is reasonably | |
13300 | true. */ | |
8634679f | 13301 | for (symbol *sym : template_args) |
3e1d3d8c | 13302 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13303 | } |
13304 | ||
208d8187 JB |
13305 | /* In C++, we can have functions nested inside functions (e.g., when |
13306 | a function declares a class that has methods). This means that | |
13307 | when we finish processing a function scope, we may need to go | |
13308 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13309 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13310 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13311 | |
921e78cf JB |
13312 | /* If we've finished processing a top-level function, subsequent |
13313 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13314 | if (cu->get_builder ()->outermost_context_p ()) |
13315 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13316 | } |
13317 | ||
13318 | /* Process all the DIES contained within a lexical block scope. Start | |
13319 | a new scope, process the dies, and then close the scope. */ | |
13320 | ||
13321 | static void | |
e7c27a73 | 13322 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13323 | { |
5e22e966 | 13324 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13325 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13326 | CORE_ADDR lowpc, highpc; |
13327 | struct die_info *child_die; | |
e142c38c DJ |
13328 | CORE_ADDR baseaddr; |
13329 | ||
b3b3bada | 13330 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13331 | |
13332 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13333 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13334 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13335 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13336 | describe ranges. */ |
e385593e JK |
13337 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13338 | { | |
13339 | case PC_BOUNDS_NOT_PRESENT: | |
13340 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13341 | there was no wrapping by that DW_TAG_lexical_block. | |
13342 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13343 | for (child_die = die->child; | |
13344 | child_die != NULL && child_die->tag; | |
436c571c | 13345 | child_die = child_die->sibling) |
4f7bc5ed TT |
13346 | { |
13347 | /* We might already be processing this DIE. This can happen | |
13348 | in an unusual circumstance -- where a subroutine A | |
13349 | appears lexically in another subroutine B, but A actually | |
13350 | inlines B. The recursion is broken here, rather than in | |
13351 | inherit_abstract_dies, because it seems better to simply | |
13352 | drop concrete children here. */ | |
13353 | if (!child_die->in_process) | |
13354 | process_die (child_die, cu); | |
13355 | } | |
e385593e JK |
13356 | return; |
13357 | case PC_BOUNDS_INVALID: | |
13358 | return; | |
13359 | } | |
3e29f34a MR |
13360 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13361 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13362 | |
c24bdb02 | 13363 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13364 | if (die->child != NULL) |
c906108c | 13365 | { |
639d11d3 | 13366 | child_die = die->child; |
c906108c SS |
13367 | while (child_die && child_die->tag) |
13368 | { | |
e7c27a73 | 13369 | process_die (child_die, cu); |
436c571c | 13370 | child_die = child_die->sibling; |
c906108c SS |
13371 | } |
13372 | } | |
3ea89b92 | 13373 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13374 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13375 | |
c24bdb02 KS |
13376 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13377 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13378 | { |
801e3a5b | 13379 | struct block *block |
c24bdb02 | 13380 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13381 | cstk.start_addr, highpc); |
801e3a5b JB |
13382 | |
13383 | /* Note that recording ranges after traversing children, as we | |
13384 | do here, means that recording a parent's ranges entails | |
13385 | walking across all its children's ranges as they appear in | |
13386 | the address map, which is quadratic behavior. | |
13387 | ||
13388 | It would be nicer to record the parent's ranges before | |
13389 | traversing its children, simply overriding whatever you find | |
13390 | there. But since we don't even decide whether to create a | |
13391 | block until after we've traversed its children, that's hard | |
13392 | to do. */ | |
13393 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13394 | } |
c24bdb02 KS |
13395 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13396 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13397 | } |
13398 | ||
216f72a1 | 13399 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13400 | |
13401 | static void | |
13402 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13403 | { | |
5e22e966 | 13404 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13405 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13406 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13407 | CORE_ADDR pc, baseaddr; |
13408 | struct attribute *attr; | |
13409 | struct call_site *call_site, call_site_local; | |
13410 | void **slot; | |
13411 | int nparams; | |
13412 | struct die_info *child_die; | |
13413 | ||
b3b3bada | 13414 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13415 | |
216f72a1 JK |
13416 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13417 | if (attr == NULL) | |
13418 | { | |
13419 | /* This was a pre-DWARF-5 GNU extension alias | |
13420 | for DW_AT_call_return_pc. */ | |
13421 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13422 | } | |
96408a79 SA |
13423 | if (!attr) |
13424 | { | |
b98664d3 | 13425 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13426 | "DIE %s [in module %s]"), |
13427 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13428 | return; |
13429 | } | |
cd6c91b4 | 13430 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13431 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13432 | |
13433 | if (cu->call_site_htab == NULL) | |
13434 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13435 | NULL, &objfile->objfile_obstack, | |
13436 | hashtab_obstack_allocate, NULL); | |
13437 | call_site_local.pc = pc; | |
13438 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13439 | if (*slot != NULL) | |
13440 | { | |
b98664d3 | 13441 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13442 | "DIE %s [in module %s]"), |
13443 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13444 | objfile_name (objfile)); |
96408a79 SA |
13445 | return; |
13446 | } | |
13447 | ||
13448 | /* Count parameters at the caller. */ | |
13449 | ||
13450 | nparams = 0; | |
13451 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13452 | child_die = child_die->sibling) |
96408a79 | 13453 | { |
216f72a1 JK |
13454 | if (child_die->tag != DW_TAG_call_site_parameter |
13455 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13456 | { |
b98664d3 | 13457 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13458 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13459 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13460 | objfile_name (objfile)); |
96408a79 SA |
13461 | continue; |
13462 | } | |
13463 | ||
13464 | nparams++; | |
13465 | } | |
13466 | ||
224c3ddb SM |
13467 | call_site |
13468 | = ((struct call_site *) | |
13469 | obstack_alloc (&objfile->objfile_obstack, | |
13470 | sizeof (*call_site) | |
13471 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13472 | *slot = call_site; |
13473 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13474 | call_site->pc = pc; | |
13475 | ||
216f72a1 JK |
13476 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13477 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13478 | { |
13479 | struct die_info *func_die; | |
13480 | ||
13481 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13482 | for (func_die = die->parent; | |
13483 | func_die && func_die->tag != DW_TAG_subprogram | |
13484 | && func_die->tag != DW_TAG_subroutine_type; | |
13485 | func_die = func_die->parent); | |
13486 | ||
216f72a1 JK |
13487 | /* DW_AT_call_all_calls is a superset |
13488 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13489 | if (func_die |
216f72a1 | 13490 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13491 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13492 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13493 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13494 | { | |
13495 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13496 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13497 | both the initial caller containing the real return address PC and | |
13498 | the final callee containing the current PC of a chain of tail | |
13499 | calls do not need to have the tail call list complete. But any | |
13500 | function candidate for a virtual tail call frame searched via | |
13501 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13502 | determined unambiguously. */ | |
13503 | } | |
13504 | else | |
13505 | { | |
13506 | struct type *func_type = NULL; | |
13507 | ||
13508 | if (func_die) | |
13509 | func_type = get_die_type (func_die, cu); | |
13510 | if (func_type != NULL) | |
13511 | { | |
78134374 | 13512 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13513 | |
13514 | /* Enlist this call site to the function. */ | |
13515 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13516 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13517 | } | |
13518 | else | |
b98664d3 | 13519 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13520 | "DIE %s [in module %s]"), |
13521 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13522 | } |
13523 | } | |
13524 | ||
216f72a1 JK |
13525 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13526 | if (attr == NULL) | |
13527 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13528 | if (attr == NULL) | |
13529 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13530 | if (attr == NULL) |
216f72a1 JK |
13531 | { |
13532 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13533 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13534 | } | |
96408a79 | 13535 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13536 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13537 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13538 | else if (attr->form_is_block ()) |
96408a79 SA |
13539 | { |
13540 | struct dwarf2_locexpr_baton *dlbaton; | |
13541 | ||
8d749320 | 13542 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13543 | dlbaton->data = DW_BLOCK (attr)->data; |
13544 | dlbaton->size = DW_BLOCK (attr)->size; | |
a50264ba | 13545 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13546 | dlbaton->per_cu = cu->per_cu; |
13547 | ||
13548 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13549 | } | |
cd6c91b4 | 13550 | else if (attr->form_is_ref ()) |
96408a79 | 13551 | { |
96408a79 SA |
13552 | struct dwarf2_cu *target_cu = cu; |
13553 | struct die_info *target_die; | |
13554 | ||
ac9ec31b | 13555 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13556 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13557 | if (die_is_declaration (target_die, target_cu)) |
13558 | { | |
7d45c7c3 | 13559 | const char *target_physname; |
9112db09 JK |
13560 | |
13561 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13562 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13563 | if (target_physname == NULL) |
9112db09 | 13564 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13565 | if (target_physname == NULL) |
b98664d3 | 13566 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13567 | "physname, for referencing DIE %s [in module %s]"), |
13568 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13569 | else |
7d455152 | 13570 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13571 | } |
13572 | else | |
13573 | { | |
13574 | CORE_ADDR lowpc; | |
13575 | ||
13576 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13577 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13578 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13579 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13580 | "low pc, for referencing DIE %s [in module %s]"), |
13581 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13582 | else |
3e29f34a MR |
13583 | { |
13584 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13585 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13586 | } | |
96408a79 SA |
13587 | } |
13588 | } | |
13589 | else | |
b98664d3 | 13590 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13591 | "block nor reference, for DIE %s [in module %s]"), |
13592 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13593 | |
13594 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 13595 | call_site->per_objfile = per_objfile; |
96408a79 SA |
13596 | |
13597 | for (child_die = die->child; | |
13598 | child_die && child_die->tag; | |
436c571c | 13599 | child_die = child_die->sibling) |
96408a79 | 13600 | { |
96408a79 | 13601 | struct call_site_parameter *parameter; |
1788b2d3 | 13602 | struct attribute *loc, *origin; |
96408a79 | 13603 | |
216f72a1 JK |
13604 | if (child_die->tag != DW_TAG_call_site_parameter |
13605 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13606 | { |
13607 | /* Already printed the complaint above. */ | |
13608 | continue; | |
13609 | } | |
13610 | ||
13611 | gdb_assert (call_site->parameter_count < nparams); | |
13612 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13613 | ||
1788b2d3 JK |
13614 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13615 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13616 | register is contained in DW_AT_call_value. */ |
96408a79 | 13617 | |
24c5c679 | 13618 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13619 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13620 | if (origin == NULL) | |
13621 | { | |
13622 | /* This was a pre-DWARF-5 GNU extension alias | |
13623 | for DW_AT_call_parameter. */ | |
13624 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13625 | } | |
cd6c91b4 | 13626 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13627 | { |
1788b2d3 | 13628 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13629 | |
0826b30a | 13630 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13631 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13632 | { |
13633 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13634 | binding can be done only inside one CU. Such referenced DIE | |
13635 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13636 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13637 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13638 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13639 | objfile_name (objfile)); |
d76b7dbc JK |
13640 | continue; |
13641 | } | |
9c541725 PA |
13642 | parameter->u.param_cu_off |
13643 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13644 | } |
4fc6c0d5 | 13645 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13646 | { |
b98664d3 | 13647 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13648 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13649 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13650 | continue; |
13651 | } | |
24c5c679 | 13652 | else |
96408a79 | 13653 | { |
24c5c679 JK |
13654 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13655 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13656 | if (parameter->u.dwarf_reg != -1) | |
13657 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13658 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13659 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13660 | ¶meter->u.fb_offset)) | |
13661 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13662 | else | |
13663 | { | |
b98664d3 | 13664 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13665 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13666 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13667 | "[in module %s]"), |
9d8780f0 | 13668 | sect_offset_str (child_die->sect_off), |
9c541725 | 13669 | objfile_name (objfile)); |
24c5c679 JK |
13670 | continue; |
13671 | } | |
96408a79 SA |
13672 | } |
13673 | ||
216f72a1 JK |
13674 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13675 | if (attr == NULL) | |
13676 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13677 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13678 | { |
b98664d3 | 13679 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13680 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13681 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13682 | objfile_name (objfile)); |
96408a79 SA |
13683 | continue; |
13684 | } | |
13685 | parameter->value = DW_BLOCK (attr)->data; | |
13686 | parameter->value_size = DW_BLOCK (attr)->size; | |
13687 | ||
13688 | /* Parameters are not pre-cleared by memset above. */ | |
13689 | parameter->data_value = NULL; | |
13690 | parameter->data_value_size = 0; | |
13691 | call_site->parameter_count++; | |
13692 | ||
216f72a1 JK |
13693 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13694 | if (attr == NULL) | |
13695 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13696 | if (attr != nullptr) |
96408a79 | 13697 | { |
4fc6c0d5 | 13698 | if (!attr->form_is_block ()) |
b98664d3 | 13699 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13700 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13701 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13702 | objfile_name (objfile)); |
96408a79 SA |
13703 | else |
13704 | { | |
13705 | parameter->data_value = DW_BLOCK (attr)->data; | |
13706 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13707 | } | |
13708 | } | |
13709 | } | |
13710 | } | |
13711 | ||
71a3c369 TT |
13712 | /* Helper function for read_variable. If DIE represents a virtual |
13713 | table, then return the type of the concrete object that is | |
13714 | associated with the virtual table. Otherwise, return NULL. */ | |
13715 | ||
13716 | static struct type * | |
13717 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13718 | { | |
13719 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13720 | if (attr == NULL) | |
13721 | return NULL; | |
13722 | ||
13723 | /* Find the type DIE. */ | |
13724 | struct die_info *type_die = NULL; | |
13725 | struct dwarf2_cu *type_cu = cu; | |
13726 | ||
cd6c91b4 | 13727 | if (attr->form_is_ref ()) |
71a3c369 TT |
13728 | type_die = follow_die_ref (die, attr, &type_cu); |
13729 | if (type_die == NULL) | |
13730 | return NULL; | |
13731 | ||
13732 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13733 | return NULL; | |
13734 | return die_containing_type (type_die, type_cu); | |
13735 | } | |
13736 | ||
13737 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13738 | ||
13739 | static void | |
13740 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13741 | { | |
13742 | struct rust_vtable_symbol *storage = NULL; | |
13743 | ||
13744 | if (cu->language == language_rust) | |
13745 | { | |
13746 | struct type *containing_type = rust_containing_type (die, cu); | |
13747 | ||
13748 | if (containing_type != NULL) | |
13749 | { | |
5e22e966 | 13750 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 13751 | |
8c14c3a3 | 13752 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 13753 | storage->concrete_type = containing_type; |
cf724bc9 | 13754 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13755 | } |
13756 | } | |
13757 | ||
e4a62c65 TV |
13758 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13759 | struct attribute *abstract_origin | |
13760 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13761 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13762 | if (res == NULL && loc && abstract_origin) | |
13763 | { | |
13764 | /* We have a variable without a name, but with a location and an abstract | |
13765 | origin. This may be a concrete instance of an abstract variable | |
13766 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13767 | later. */ | |
13768 | struct dwarf2_cu *origin_cu = cu; | |
13769 | struct die_info *origin_die | |
13770 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
13771 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13772 | per_objfile->per_bfd->abstract_to_concrete | |
13773 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 13774 | } |
71a3c369 TT |
13775 | } |
13776 | ||
43988095 JK |
13777 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13778 | reading .debug_rnglists. | |
13779 | Callback's type should be: | |
13780 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13781 | Return true if the attributes are present and valid, otherwise, | |
13782 | return false. */ | |
13783 | ||
13784 | template <typename Callback> | |
13785 | static bool | |
13786 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13787 | Callback &&callback) | |
13788 | { | |
976ca316 SM |
13789 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13790 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 13791 | bfd *obfd = objfile->obfd; |
43988095 | 13792 | /* Base address selection entry. */ |
2b24b6e4 | 13793 | gdb::optional<CORE_ADDR> base; |
43988095 | 13794 | const gdb_byte *buffer; |
43988095 JK |
13795 | CORE_ADDR baseaddr; |
13796 | bool overflow = false; | |
13797 | ||
43988095 JK |
13798 | base = cu->base_address; |
13799 | ||
976ca316 SM |
13800 | per_objfile->per_bfd->rnglists.read (objfile); |
13801 | if (offset >= per_objfile->per_bfd->rnglists.size) | |
43988095 | 13802 | { |
b98664d3 | 13803 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13804 | offset); |
13805 | return false; | |
13806 | } | |
976ca316 | 13807 | buffer = per_objfile->per_bfd->rnglists.buffer + offset; |
43988095 | 13808 | |
b3b3bada | 13809 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13810 | |
13811 | while (1) | |
13812 | { | |
7814882a JK |
13813 | /* Initialize it due to a false compiler warning. */ |
13814 | CORE_ADDR range_beginning = 0, range_end = 0; | |
976ca316 SM |
13815 | const gdb_byte *buf_end = (per_objfile->per_bfd->rnglists.buffer |
13816 | + per_objfile->per_bfd->rnglists.size); | |
43988095 JK |
13817 | unsigned int bytes_read; |
13818 | ||
13819 | if (buffer == buf_end) | |
13820 | { | |
13821 | overflow = true; | |
13822 | break; | |
13823 | } | |
13824 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13825 | switch (rlet) | |
13826 | { | |
13827 | case DW_RLE_end_of_list: | |
13828 | break; | |
13829 | case DW_RLE_base_address: | |
13830 | if (buffer + cu->header.addr_size > buf_end) | |
13831 | { | |
13832 | overflow = true; | |
13833 | break; | |
13834 | } | |
c8a7a66f | 13835 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13836 | buffer += bytes_read; |
13837 | break; | |
13838 | case DW_RLE_start_length: | |
13839 | if (buffer + cu->header.addr_size > buf_end) | |
13840 | { | |
13841 | overflow = true; | |
13842 | break; | |
13843 | } | |
c8a7a66f TT |
13844 | range_beginning = cu->header.read_address (obfd, buffer, |
13845 | &bytes_read); | |
43988095 JK |
13846 | buffer += bytes_read; |
13847 | range_end = (range_beginning | |
13848 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13849 | buffer += bytes_read; | |
13850 | if (buffer > buf_end) | |
13851 | { | |
13852 | overflow = true; | |
13853 | break; | |
13854 | } | |
13855 | break; | |
13856 | case DW_RLE_offset_pair: | |
13857 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13858 | buffer += bytes_read; | |
13859 | if (buffer > buf_end) | |
13860 | { | |
13861 | overflow = true; | |
13862 | break; | |
13863 | } | |
13864 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13865 | buffer += bytes_read; | |
13866 | if (buffer > buf_end) | |
13867 | { | |
13868 | overflow = true; | |
13869 | break; | |
13870 | } | |
13871 | break; | |
13872 | case DW_RLE_start_end: | |
13873 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13874 | { | |
13875 | overflow = true; | |
13876 | break; | |
13877 | } | |
c8a7a66f TT |
13878 | range_beginning = cu->header.read_address (obfd, buffer, |
13879 | &bytes_read); | |
43988095 | 13880 | buffer += bytes_read; |
c8a7a66f | 13881 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13882 | buffer += bytes_read; |
13883 | break; | |
13884 | default: | |
b98664d3 | 13885 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13886 | return false; |
13887 | } | |
13888 | if (rlet == DW_RLE_end_of_list || overflow) | |
13889 | break; | |
13890 | if (rlet == DW_RLE_base_address) | |
13891 | continue; | |
13892 | ||
2b24b6e4 | 13893 | if (!base.has_value ()) |
43988095 JK |
13894 | { |
13895 | /* We have no valid base address for the ranges | |
13896 | data. */ | |
b98664d3 | 13897 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13898 | return false; |
13899 | } | |
13900 | ||
13901 | if (range_beginning > range_end) | |
13902 | { | |
13903 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13904 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13905 | return false; |
13906 | } | |
13907 | ||
13908 | /* Empty range entries have no effect. */ | |
13909 | if (range_beginning == range_end) | |
13910 | continue; | |
13911 | ||
2b24b6e4 TT |
13912 | range_beginning += *base; |
13913 | range_end += *base; | |
43988095 JK |
13914 | |
13915 | /* A not-uncommon case of bad debug info. | |
13916 | Don't pollute the addrmap with bad data. */ | |
13917 | if (range_beginning + baseaddr == 0 | |
976ca316 | 13918 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 13919 | { |
b98664d3 | 13920 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
13921 | " [in module %s]"), objfile_name (objfile)); |
13922 | continue; | |
13923 | } | |
13924 | ||
13925 | callback (range_beginning, range_end); | |
13926 | } | |
13927 | ||
13928 | if (overflow) | |
13929 | { | |
b98664d3 | 13930 | complaint (_("Offset %d is not terminated " |
43988095 JK |
13931 | "for DW_AT_ranges attribute"), |
13932 | offset); | |
13933 | return false; | |
13934 | } | |
13935 | ||
13936 | return true; | |
13937 | } | |
13938 | ||
13939 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
13940 | Callback's type should be: | |
13941 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 13942 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 13943 | |
43988095 | 13944 | template <typename Callback> |
43039443 | 13945 | static int |
5f46c5a5 | 13946 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 13947 | Callback &&callback) |
43039443 | 13948 | { |
5e22e966 SM |
13949 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13950 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
13951 | struct comp_unit_head *cu_header = &cu->header; |
13952 | bfd *obfd = objfile->obfd; | |
13953 | unsigned int addr_size = cu_header->addr_size; | |
13954 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
13955 | /* Base address selection entry. */ | |
2b24b6e4 | 13956 | gdb::optional<CORE_ADDR> base; |
43039443 | 13957 | unsigned int dummy; |
d521ce57 | 13958 | const gdb_byte *buffer; |
ff013f42 | 13959 | CORE_ADDR baseaddr; |
43039443 | 13960 | |
43988095 JK |
13961 | if (cu_header->version >= 5) |
13962 | return dwarf2_rnglists_process (offset, cu, callback); | |
13963 | ||
d00adf39 | 13964 | base = cu->base_address; |
43039443 | 13965 | |
5e22e966 SM |
13966 | per_objfile->per_bfd->ranges.read (objfile); |
13967 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 13968 | { |
b98664d3 | 13969 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
13970 | offset); |
13971 | return 0; | |
13972 | } | |
5e22e966 | 13973 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 13974 | |
b3b3bada | 13975 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 13976 | |
43039443 JK |
13977 | while (1) |
13978 | { | |
13979 | CORE_ADDR range_beginning, range_end; | |
13980 | ||
c8a7a66f | 13981 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 13982 | buffer += addr_size; |
c8a7a66f | 13983 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
13984 | buffer += addr_size; |
13985 | offset += 2 * addr_size; | |
13986 | ||
13987 | /* An end of list marker is a pair of zero addresses. */ | |
13988 | if (range_beginning == 0 && range_end == 0) | |
13989 | /* Found the end of list entry. */ | |
13990 | break; | |
13991 | ||
13992 | /* Each base address selection entry is a pair of 2 values. | |
13993 | The first is the largest possible address, the second is | |
13994 | the base address. Check for a base address here. */ | |
13995 | if ((range_beginning & mask) == mask) | |
13996 | { | |
28d2bfb9 AB |
13997 | /* If we found the largest possible address, then we already |
13998 | have the base address in range_end. */ | |
13999 | base = range_end; | |
43039443 JK |
14000 | continue; |
14001 | } | |
14002 | ||
2b24b6e4 | 14003 | if (!base.has_value ()) |
43039443 JK |
14004 | { |
14005 | /* We have no valid base address for the ranges | |
14006 | data. */ | |
b98664d3 | 14007 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14008 | return 0; |
14009 | } | |
14010 | ||
9277c30c UW |
14011 | if (range_beginning > range_end) |
14012 | { | |
14013 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14014 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14015 | return 0; |
14016 | } | |
14017 | ||
14018 | /* Empty range entries have no effect. */ | |
14019 | if (range_beginning == range_end) | |
14020 | continue; | |
14021 | ||
2b24b6e4 TT |
14022 | range_beginning += *base; |
14023 | range_end += *base; | |
43039443 | 14024 | |
01093045 DE |
14025 | /* A not-uncommon case of bad debug info. |
14026 | Don't pollute the addrmap with bad data. */ | |
14027 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14028 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14029 | { |
b98664d3 | 14030 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14031 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14032 | continue; |
14033 | } | |
14034 | ||
5f46c5a5 JK |
14035 | callback (range_beginning, range_end); |
14036 | } | |
14037 | ||
14038 | return 1; | |
14039 | } | |
14040 | ||
14041 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14042 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14043 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14044 | ||
14045 | static int | |
14046 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14047 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 14048 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 14049 | { |
5e22e966 | 14050 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14051 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14052 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14053 | int low_set = 0; |
14054 | CORE_ADDR low = 0; | |
14055 | CORE_ADDR high = 0; | |
14056 | int retval; | |
14057 | ||
14058 | retval = dwarf2_ranges_process (offset, cu, | |
14059 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14060 | { | |
9277c30c | 14061 | if (ranges_pst != NULL) |
3e29f34a MR |
14062 | { |
14063 | CORE_ADDR lowpc; | |
14064 | CORE_ADDR highpc; | |
14065 | ||
79748972 TT |
14066 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14067 | range_beginning + baseaddr) | |
14068 | - baseaddr); | |
14069 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14070 | range_end + baseaddr) | |
14071 | - baseaddr); | |
d320c2b5 TT |
14072 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14073 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14074 | } |
ff013f42 | 14075 | |
43039443 JK |
14076 | /* FIXME: This is recording everything as a low-high |
14077 | segment of consecutive addresses. We should have a | |
14078 | data structure for discontiguous block ranges | |
14079 | instead. */ | |
14080 | if (! low_set) | |
14081 | { | |
14082 | low = range_beginning; | |
14083 | high = range_end; | |
14084 | low_set = 1; | |
14085 | } | |
14086 | else | |
14087 | { | |
14088 | if (range_beginning < low) | |
14089 | low = range_beginning; | |
14090 | if (range_end > high) | |
14091 | high = range_end; | |
14092 | } | |
5f46c5a5 JK |
14093 | }); |
14094 | if (!retval) | |
14095 | return 0; | |
43039443 JK |
14096 | |
14097 | if (! low_set) | |
14098 | /* If the first entry is an end-of-list marker, the range | |
14099 | describes an empty scope, i.e. no instructions. */ | |
14100 | return 0; | |
14101 | ||
14102 | if (low_return) | |
14103 | *low_return = low; | |
14104 | if (high_return) | |
14105 | *high_return = high; | |
14106 | return 1; | |
14107 | } | |
14108 | ||
3a2b436a JK |
14109 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14110 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14111 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14112 | |
3a2b436a | 14113 | static enum pc_bounds_kind |
af34e669 | 14114 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14115 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14116 | dwarf2_psymtab *pst) |
c906108c | 14117 | { |
976ca316 | 14118 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14119 | struct attribute *attr; |
91da1414 | 14120 | struct attribute *attr_high; |
af34e669 DJ |
14121 | CORE_ADDR low = 0; |
14122 | CORE_ADDR high = 0; | |
e385593e | 14123 | enum pc_bounds_kind ret; |
c906108c | 14124 | |
91da1414 MW |
14125 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14126 | if (attr_high) | |
af34e669 | 14127 | { |
e142c38c | 14128 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14129 | if (attr != nullptr) |
91da1414 | 14130 | { |
cd6c91b4 TT |
14131 | low = attr->value_as_address (); |
14132 | high = attr_high->value_as_address (); | |
14133 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 14134 | high += low; |
91da1414 | 14135 | } |
af34e669 DJ |
14136 | else |
14137 | /* Found high w/o low attribute. */ | |
e385593e | 14138 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14139 | |
14140 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14141 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14142 | } |
c906108c | 14143 | else |
af34e669 | 14144 | { |
e142c38c | 14145 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14146 | if (attr != NULL) |
14147 | { | |
18a8505e | 14148 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14149 | We take advantage of the fact that DW_AT_ranges does not appear |
14150 | in DW_TAG_compile_unit of DWO files. */ | |
14151 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14152 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14153 | + (need_ranges_base | |
14154 | ? cu->ranges_base | |
14155 | : 0)); | |
2e3cf129 | 14156 | |
af34e669 | 14157 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14158 | .debug_ranges section. */ |
2e3cf129 | 14159 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14160 | return PC_BOUNDS_INVALID; |
43039443 | 14161 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14162 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14163 | } |
e385593e JK |
14164 | else |
14165 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14166 | } |
c906108c | 14167 | |
48fbe735 | 14168 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14169 | if (high <= low) |
e385593e | 14170 | return PC_BOUNDS_INVALID; |
c906108c SS |
14171 | |
14172 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14173 | eliminate duplicate copies of functions and vtables and such. | |
14174 | The linker will arbitrarily choose one and discard the others. | |
14175 | The AT_*_pc values for such functions refer to local labels in | |
14176 | these sections. If the section from that file was discarded, the | |
14177 | labels are not in the output, so the relocs get a value of 0. | |
14178 | If this is a discarded function, mark the pc bounds as invalid, | |
14179 | so that GDB will ignore it. */ | |
976ca316 | 14180 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14181 | return PC_BOUNDS_INVALID; |
c906108c SS |
14182 | |
14183 | *lowpc = low; | |
96408a79 SA |
14184 | if (highpc) |
14185 | *highpc = high; | |
af34e669 | 14186 | return ret; |
c906108c SS |
14187 | } |
14188 | ||
b084d499 JB |
14189 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14190 | its low and high PC addresses. Do nothing if these addresses could not | |
14191 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14192 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14193 | ||
14194 | static void | |
14195 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14196 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14197 | struct dwarf2_cu *cu) | |
14198 | { | |
14199 | CORE_ADDR low, high; | |
14200 | struct die_info *child = die->child; | |
14201 | ||
e385593e | 14202 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14203 | { |
325fac50 PA |
14204 | *lowpc = std::min (*lowpc, low); |
14205 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14206 | } |
14207 | ||
14208 | /* If the language does not allow nested subprograms (either inside | |
14209 | subprograms or lexical blocks), we're done. */ | |
14210 | if (cu->language != language_ada) | |
14211 | return; | |
6e70227d | 14212 | |
b084d499 JB |
14213 | /* Check all the children of the given DIE. If it contains nested |
14214 | subprograms, then check their pc bounds. Likewise, we need to | |
14215 | check lexical blocks as well, as they may also contain subprogram | |
14216 | definitions. */ | |
14217 | while (child && child->tag) | |
14218 | { | |
14219 | if (child->tag == DW_TAG_subprogram | |
14220 | || child->tag == DW_TAG_lexical_block) | |
14221 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14222 | child = child->sibling; |
b084d499 JB |
14223 | } |
14224 | } | |
14225 | ||
fae299cd DC |
14226 | /* Get the low and high pc's represented by the scope DIE, and store |
14227 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14228 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14229 | ||
14230 | static void | |
14231 | get_scope_pc_bounds (struct die_info *die, | |
14232 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14233 | struct dwarf2_cu *cu) | |
14234 | { | |
14235 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14236 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14237 | CORE_ADDR current_low, current_high; | |
14238 | ||
3a2b436a | 14239 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14240 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14241 | { |
14242 | best_low = current_low; | |
14243 | best_high = current_high; | |
14244 | } | |
14245 | else | |
14246 | { | |
14247 | struct die_info *child = die->child; | |
14248 | ||
14249 | while (child && child->tag) | |
14250 | { | |
14251 | switch (child->tag) { | |
14252 | case DW_TAG_subprogram: | |
b084d499 | 14253 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14254 | break; |
14255 | case DW_TAG_namespace: | |
f55ee35c | 14256 | case DW_TAG_module: |
fae299cd DC |
14257 | /* FIXME: carlton/2004-01-16: Should we do this for |
14258 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14259 | that current GCC's always emit the DIEs corresponding | |
14260 | to definitions of methods of classes as children of a | |
14261 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14262 | the DIEs giving the declarations, which could be | |
14263 | anywhere). But I don't see any reason why the | |
14264 | standards says that they have to be there. */ | |
14265 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14266 | ||
14267 | if (current_low != ((CORE_ADDR) -1)) | |
14268 | { | |
325fac50 PA |
14269 | best_low = std::min (best_low, current_low); |
14270 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14271 | } |
14272 | break; | |
14273 | default: | |
0963b4bd | 14274 | /* Ignore. */ |
fae299cd DC |
14275 | break; |
14276 | } | |
14277 | ||
436c571c | 14278 | child = child->sibling; |
fae299cd DC |
14279 | } |
14280 | } | |
14281 | ||
14282 | *lowpc = best_low; | |
14283 | *highpc = best_high; | |
14284 | } | |
14285 | ||
801e3a5b JB |
14286 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14287 | in DIE. */ | |
380bca97 | 14288 | |
801e3a5b JB |
14289 | static void |
14290 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14291 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14292 | { | |
5e22e966 | 14293 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14294 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14295 | struct attribute *attr; |
91da1414 | 14296 | struct attribute *attr_high; |
801e3a5b | 14297 | |
91da1414 MW |
14298 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14299 | if (attr_high) | |
801e3a5b | 14300 | { |
801e3a5b | 14301 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14302 | if (attr != nullptr) |
801e3a5b | 14303 | { |
cd6c91b4 TT |
14304 | CORE_ADDR low = attr->value_as_address (); |
14305 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 14306 | |
cd6c91b4 | 14307 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14308 | high += low; |
9a619af0 | 14309 | |
3e29f34a MR |
14310 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14311 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14312 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14313 | } |
14314 | } | |
14315 | ||
14316 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14317 | if (attr != nullptr) |
801e3a5b | 14318 | { |
18a8505e | 14319 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14320 | We take advantage of the fact that DW_AT_ranges does not appear |
14321 | in DW_TAG_compile_unit of DWO files. */ | |
14322 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14323 | |
14324 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14325 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14326 | unsigned long offset = (DW_UNSND (attr) |
14327 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14328 | |
2d5f09ec | 14329 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14330 | dwarf2_ranges_process (offset, cu, |
14331 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14332 | { | |
58fdfd2c JK |
14333 | start += baseaddr; |
14334 | end += baseaddr; | |
5f46c5a5 JK |
14335 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14336 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14337 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14338 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14339 | }); |
2d5f09ec KB |
14340 | |
14341 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14342 | } |
14343 | } | |
14344 | ||
685b1105 JK |
14345 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14346 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14347 | |
685b1105 JK |
14348 | static void |
14349 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14350 | { |
38360086 | 14351 | int major, minor; |
60d5a603 JK |
14352 | |
14353 | if (cu->producer == NULL) | |
14354 | { | |
14355 | /* For unknown compilers expect their behavior is DWARF version | |
14356 | compliant. | |
14357 | ||
14358 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14359 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14360 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14361 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14362 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14363 | } |
b1ffba5a | 14364 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14365 | { |
38360086 MW |
14366 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14367 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14368 | } |
5230b05a | 14369 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14370 | { |
14371 | cu->producer_is_icc = true; | |
14372 | cu->producer_is_icc_lt_14 = major < 14; | |
14373 | } | |
c258c396 JD |
14374 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14375 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14376 | else |
14377 | { | |
14378 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14379 | compliant. */ | |
60d5a603 JK |
14380 | } |
14381 | ||
9068261f | 14382 | cu->checked_producer = true; |
685b1105 | 14383 | } |
ba919b58 | 14384 | |
685b1105 JK |
14385 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14386 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14387 | during 4.6.0 experimental. */ | |
14388 | ||
9068261f | 14389 | static bool |
685b1105 JK |
14390 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14391 | { | |
14392 | if (!cu->checked_producer) | |
14393 | check_producer (cu); | |
14394 | ||
14395 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14396 | } |
14397 | ||
c258c396 JD |
14398 | |
14399 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14400 | with incorrect is_stmt attributes. */ | |
14401 | ||
14402 | static bool | |
14403 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14404 | { | |
14405 | if (!cu->checked_producer) | |
14406 | check_producer (cu); | |
14407 | ||
14408 | return cu->producer_is_codewarrior; | |
14409 | } | |
14410 | ||
405feb71 | 14411 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14412 | DW_AT_accessibility. */ |
14413 | ||
14414 | static enum dwarf_access_attribute | |
14415 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14416 | { | |
14417 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14418 | { | |
14419 | /* The default DWARF 2 accessibility for members is public, the default | |
14420 | accessibility for inheritance is private. */ | |
14421 | ||
14422 | if (die->tag != DW_TAG_inheritance) | |
14423 | return DW_ACCESS_public; | |
14424 | else | |
14425 | return DW_ACCESS_private; | |
14426 | } | |
14427 | else | |
14428 | { | |
14429 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14430 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14431 | depends on the container kind. */ | |
14432 | ||
14433 | if (die->parent->tag == DW_TAG_class_type) | |
14434 | return DW_ACCESS_private; | |
14435 | else | |
14436 | return DW_ACCESS_public; | |
14437 | } | |
14438 | } | |
14439 | ||
74ac6d43 TT |
14440 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14441 | offset. If the attribute was not found return 0, otherwise return | |
14442 | 1. If it was found but could not properly be handled, set *OFFSET | |
14443 | to 0. */ | |
14444 | ||
14445 | static int | |
14446 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14447 | LONGEST *offset) | |
14448 | { | |
14449 | struct attribute *attr; | |
14450 | ||
14451 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14452 | if (attr != NULL) | |
14453 | { | |
14454 | *offset = 0; | |
14455 | ||
14456 | /* Note that we do not check for a section offset first here. | |
14457 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14458 | so if we see it, we can assume that a constant form is really | |
14459 | a constant and not a section offset. */ | |
cd6c91b4 | 14460 | if (attr->form_is_constant ()) |
0826b30a | 14461 | *offset = attr->constant_value (0); |
cd6c91b4 | 14462 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14463 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14464 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14465 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14466 | else | |
14467 | dwarf2_complex_location_expr_complaint (); | |
14468 | ||
14469 | return 1; | |
14470 | } | |
14471 | ||
14472 | return 0; | |
14473 | } | |
14474 | ||
7d79de9a TT |
14475 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14476 | ||
14477 | static void | |
14478 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14479 | struct field *field) | |
14480 | { | |
14481 | struct attribute *attr; | |
14482 | ||
14483 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14484 | if (attr != NULL) | |
14485 | { | |
14486 | if (attr->form_is_constant ()) | |
14487 | { | |
14488 | LONGEST offset = attr->constant_value (0); | |
14489 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14490 | } | |
14491 | else if (attr->form_is_section_offset ()) | |
14492 | dwarf2_complex_location_expr_complaint (); | |
14493 | else if (attr->form_is_block ()) | |
14494 | { | |
14495 | bool handled; | |
14496 | CORE_ADDR offset = decode_locdesc (DW_BLOCK (attr), cu, &handled); | |
14497 | if (handled) | |
14498 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14499 | else | |
14500 | { | |
5e22e966 SM |
14501 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14502 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14503 | struct dwarf2_locexpr_baton *dlbaton |
14504 | = XOBNEW (&objfile->objfile_obstack, | |
14505 | struct dwarf2_locexpr_baton); | |
14506 | dlbaton->data = DW_BLOCK (attr)->data; | |
14507 | dlbaton->size = DW_BLOCK (attr)->size; | |
14508 | /* When using this baton, we want to compute the address | |
14509 | of the field, not the value. This is why | |
14510 | is_reference is set to false here. */ | |
14511 | dlbaton->is_reference = false; | |
5e22e966 | 14512 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14513 | dlbaton->per_cu = cu->per_cu; |
14514 | ||
14515 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14516 | } | |
14517 | } | |
14518 | else | |
14519 | dwarf2_complex_location_expr_complaint (); | |
14520 | } | |
14521 | } | |
14522 | ||
c906108c SS |
14523 | /* Add an aggregate field to the field list. */ |
14524 | ||
14525 | static void | |
107d2387 | 14526 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14527 | struct dwarf2_cu *cu) |
6e70227d | 14528 | { |
5e22e966 | 14529 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14530 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14531 | struct nextfield *new_field; |
14532 | struct attribute *attr; | |
14533 | struct field *fp; | |
15d034d0 | 14534 | const char *fieldname = ""; |
c906108c | 14535 | |
7d0ccb61 DJ |
14536 | if (die->tag == DW_TAG_inheritance) |
14537 | { | |
be2daae6 TT |
14538 | fip->baseclasses.emplace_back (); |
14539 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14540 | } |
14541 | else | |
14542 | { | |
be2daae6 TT |
14543 | fip->fields.emplace_back (); |
14544 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14545 | } |
be2daae6 | 14546 | |
9c6a1327 TT |
14547 | new_field->offset = die->sect_off; |
14548 | ||
e142c38c | 14549 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14550 | if (attr != nullptr) |
c906108c | 14551 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14552 | else |
14553 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14554 | if (new_field->accessibility != DW_ACCESS_public) |
14555 | fip->non_public_fields = 1; | |
60d5a603 | 14556 | |
e142c38c | 14557 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14558 | if (attr != nullptr) |
c906108c | 14559 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14560 | else |
14561 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14562 | |
14563 | fp = &new_field->field; | |
a9a9bd0f | 14564 | |
e142c38c | 14565 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14566 | { |
a9a9bd0f | 14567 | /* Data member other than a C++ static data member. */ |
6e70227d | 14568 | |
c906108c | 14569 | /* Get type of field. */ |
5d14b6e5 | 14570 | fp->set_type (die_type (die, cu)); |
c906108c | 14571 | |
d6a843b5 | 14572 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14573 | |
c906108c | 14574 | /* Get bit size of field (zero if none). */ |
e142c38c | 14575 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14576 | if (attr != nullptr) |
c906108c SS |
14577 | { |
14578 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14579 | } | |
14580 | else | |
14581 | { | |
14582 | FIELD_BITSIZE (*fp) = 0; | |
14583 | } | |
14584 | ||
14585 | /* Get bit offset of field. */ | |
7d79de9a | 14586 | handle_data_member_location (die, cu, fp); |
e142c38c | 14587 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14588 | if (attr != nullptr) |
c906108c | 14589 | { |
d5a22e77 | 14590 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14591 | { |
14592 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14593 | additional bit offset from the MSB of the containing |
14594 | anonymous object to the MSB of the field. We don't | |
14595 | have to do anything special since we don't need to | |
14596 | know the size of the anonymous object. */ | |
f41f5e61 | 14597 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14598 | } |
14599 | else | |
14600 | { | |
14601 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14602 | MSB of the anonymous object, subtract off the number of |
14603 | bits from the MSB of the field to the MSB of the | |
14604 | object, and then subtract off the number of bits of | |
14605 | the field itself. The result is the bit offset of | |
14606 | the LSB of the field. */ | |
c906108c SS |
14607 | int anonymous_size; |
14608 | int bit_offset = DW_UNSND (attr); | |
14609 | ||
e142c38c | 14610 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14611 | if (attr != nullptr) |
c906108c SS |
14612 | { |
14613 | /* The size of the anonymous object containing | |
14614 | the bit field is explicit, so use the | |
14615 | indicated size (in bytes). */ | |
14616 | anonymous_size = DW_UNSND (attr); | |
14617 | } | |
14618 | else | |
14619 | { | |
14620 | /* The size of the anonymous object containing | |
14621 | the bit field must be inferred from the type | |
14622 | attribute of the data member containing the | |
14623 | bit field. */ | |
5d14b6e5 | 14624 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 14625 | } |
f41f5e61 PA |
14626 | SET_FIELD_BITPOS (*fp, |
14627 | (FIELD_BITPOS (*fp) | |
14628 | + anonymous_size * bits_per_byte | |
14629 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14630 | } |
14631 | } | |
da5b30da AA |
14632 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14633 | if (attr != NULL) | |
14634 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14635 | + attr->constant_value (0))); |
c906108c SS |
14636 | |
14637 | /* Get name of field. */ | |
39cbfefa DJ |
14638 | fieldname = dwarf2_name (die, cu); |
14639 | if (fieldname == NULL) | |
14640 | fieldname = ""; | |
d8151005 DJ |
14641 | |
14642 | /* The name is already allocated along with this objfile, so we don't | |
14643 | need to duplicate it for the type. */ | |
14644 | fp->name = fieldname; | |
c906108c SS |
14645 | |
14646 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14647 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14648 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14649 | { |
d48cc9dd | 14650 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14651 | new_field->accessibility = DW_ACCESS_private; |
14652 | fip->non_public_fields = 1; | |
14653 | } | |
14654 | } | |
a9a9bd0f | 14655 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14656 | { |
a9a9bd0f DC |
14657 | /* C++ static member. */ |
14658 | ||
14659 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14660 | is a declaration, but all versions of G++ as of this writing | |
14661 | (so through at least 3.2.1) incorrectly generate | |
14662 | DW_TAG_variable tags. */ | |
6e70227d | 14663 | |
ff355380 | 14664 | const char *physname; |
c906108c | 14665 | |
a9a9bd0f | 14666 | /* Get name of field. */ |
39cbfefa DJ |
14667 | fieldname = dwarf2_name (die, cu); |
14668 | if (fieldname == NULL) | |
c906108c SS |
14669 | return; |
14670 | ||
254e6b9e | 14671 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14672 | if (attr |
14673 | /* Only create a symbol if this is an external value. | |
14674 | new_symbol checks this and puts the value in the global symbol | |
14675 | table, which we want. If it is not external, new_symbol | |
14676 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14677 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14678 | { |
14679 | /* A static const member, not much different than an enum as far as | |
14680 | we're concerned, except that we can support more types. */ | |
14681 | new_symbol (die, NULL, cu); | |
14682 | } | |
14683 | ||
2df3850c | 14684 | /* Get physical name. */ |
ff355380 | 14685 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14686 | |
d8151005 DJ |
14687 | /* The name is already allocated along with this objfile, so we don't |
14688 | need to duplicate it for the type. */ | |
14689 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 14690 | fp->set_type (die_type (die, cu)); |
d8151005 | 14691 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14692 | } |
14693 | else if (die->tag == DW_TAG_inheritance) | |
14694 | { | |
74ac6d43 | 14695 | /* C++ base class field. */ |
7d79de9a | 14696 | handle_data_member_location (die, cu, fp); |
c906108c | 14697 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
14698 | fp->set_type (die_type (die, cu)); |
14699 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 14700 | } |
2ddeaf8a TT |
14701 | else |
14702 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14703 | } |
14704 | ||
883fd55a KS |
14705 | /* Can the type given by DIE define another type? */ |
14706 | ||
14707 | static bool | |
14708 | type_can_define_types (const struct die_info *die) | |
14709 | { | |
14710 | switch (die->tag) | |
14711 | { | |
14712 | case DW_TAG_typedef: | |
14713 | case DW_TAG_class_type: | |
14714 | case DW_TAG_structure_type: | |
14715 | case DW_TAG_union_type: | |
14716 | case DW_TAG_enumeration_type: | |
14717 | return true; | |
14718 | ||
14719 | default: | |
14720 | return false; | |
14721 | } | |
14722 | } | |
14723 | ||
14724 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14725 | |
14726 | static void | |
883fd55a KS |
14727 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14728 | struct dwarf2_cu *cu) | |
6e70227d | 14729 | { |
be2daae6 TT |
14730 | struct decl_field fp; |
14731 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14732 | |
883fd55a | 14733 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14734 | |
883fd55a | 14735 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14736 | fp.name = dwarf2_name (die, cu); |
14737 | fp.type = read_type_die (die, cu); | |
98751a41 | 14738 | |
c191a687 KS |
14739 | /* Save accessibility. */ |
14740 | enum dwarf_access_attribute accessibility; | |
14741 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14742 | if (attr != NULL) | |
14743 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14744 | else | |
14745 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14746 | switch (accessibility) | |
14747 | { | |
14748 | case DW_ACCESS_public: | |
14749 | /* The assumed value if neither private nor protected. */ | |
14750 | break; | |
14751 | case DW_ACCESS_private: | |
be2daae6 | 14752 | fp.is_private = 1; |
c191a687 KS |
14753 | break; |
14754 | case DW_ACCESS_protected: | |
be2daae6 | 14755 | fp.is_protected = 1; |
c191a687 KS |
14756 | break; |
14757 | default: | |
b98664d3 | 14758 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14759 | } |
14760 | ||
883fd55a | 14761 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14762 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14763 | else |
be2daae6 | 14764 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14765 | } |
14766 | ||
9c6a1327 TT |
14767 | /* A convenience typedef that's used when finding the discriminant |
14768 | field for a variant part. */ | |
1b95cdb7 SM |
14769 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
14770 | offset_map_type; | |
9c6a1327 TT |
14771 | |
14772 | /* Compute the discriminant range for a given variant. OBSTACK is | |
14773 | where the results will be stored. VARIANT is the variant to | |
14774 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
14775 | or unsigned. */ | |
14776 | ||
14777 | static const gdb::array_view<discriminant_range> | |
14778 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
14779 | bool is_unsigned) | |
14780 | { | |
14781 | std::vector<discriminant_range> ranges; | |
14782 | ||
14783 | if (variant.default_branch) | |
14784 | return {}; | |
14785 | ||
14786 | if (variant.discr_list_data == nullptr) | |
14787 | { | |
14788 | discriminant_range r | |
14789 | = {variant.discriminant_value, variant.discriminant_value}; | |
14790 | ranges.push_back (r); | |
14791 | } | |
14792 | else | |
14793 | { | |
14794 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
14795 | variant.discr_list_data->size); | |
14796 | while (!data.empty ()) | |
14797 | { | |
14798 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
14799 | { | |
14800 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
14801 | break; | |
14802 | } | |
14803 | bool is_range = data[0] == DW_DSC_range; | |
14804 | data = data.slice (1); | |
14805 | ||
14806 | ULONGEST low, high; | |
14807 | unsigned int bytes_read; | |
14808 | ||
14809 | if (data.empty ()) | |
14810 | { | |
14811 | complaint (_("DW_AT_discr_list missing low value")); | |
14812 | break; | |
14813 | } | |
14814 | if (is_unsigned) | |
14815 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
14816 | else | |
14817 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
14818 | &bytes_read); | |
14819 | data = data.slice (bytes_read); | |
14820 | ||
14821 | if (is_range) | |
14822 | { | |
14823 | if (data.empty ()) | |
14824 | { | |
14825 | complaint (_("DW_AT_discr_list missing high value")); | |
14826 | break; | |
14827 | } | |
14828 | if (is_unsigned) | |
14829 | high = read_unsigned_leb128 (nullptr, data.data (), | |
14830 | &bytes_read); | |
14831 | else | |
14832 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
14833 | &bytes_read); | |
14834 | data = data.slice (bytes_read); | |
14835 | } | |
14836 | else | |
14837 | high = low; | |
14838 | ||
14839 | ranges.push_back ({ low, high }); | |
14840 | } | |
14841 | } | |
14842 | ||
14843 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
14844 | ranges.size ()); | |
14845 | std::copy (ranges.begin (), ranges.end (), result); | |
14846 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
14847 | } | |
14848 | ||
14849 | static const gdb::array_view<variant_part> create_variant_parts | |
14850 | (struct obstack *obstack, | |
14851 | const offset_map_type &offset_map, | |
14852 | struct field_info *fi, | |
14853 | const std::vector<variant_part_builder> &variant_parts); | |
14854 | ||
14855 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
14856 | the variant to fill in. OBSTACK is where any needed allocations | |
14857 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
14858 | fields for the type. FI describes the fields of the type we're | |
14859 | processing. FIELD is the variant field we're converting. */ | |
14860 | ||
14861 | static void | |
14862 | create_one_variant (variant &result, struct obstack *obstack, | |
14863 | const offset_map_type &offset_map, | |
14864 | struct field_info *fi, const variant_field &field) | |
14865 | { | |
14866 | result.discriminants = convert_variant_range (obstack, field, false); | |
14867 | result.first_field = field.first_field + fi->baseclasses.size (); | |
14868 | result.last_field = field.last_field + fi->baseclasses.size (); | |
14869 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
14870 | field.variant_parts); | |
14871 | } | |
14872 | ||
14873 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
14874 | is the variant part to fill in. OBSTACK is where any needed | |
14875 | allocations will be done. OFFSET_MAP holds the mapping from | |
14876 | section offsets to fields for the type. FI describes the fields of | |
14877 | the type we're processing. BUILDER is the variant part to be | |
14878 | converted. */ | |
14879 | ||
14880 | static void | |
14881 | create_one_variant_part (variant_part &result, | |
14882 | struct obstack *obstack, | |
14883 | const offset_map_type &offset_map, | |
14884 | struct field_info *fi, | |
14885 | const variant_part_builder &builder) | |
14886 | { | |
14887 | auto iter = offset_map.find (builder.discriminant_offset); | |
14888 | if (iter == offset_map.end ()) | |
14889 | { | |
14890 | result.discriminant_index = -1; | |
14891 | /* Doesn't matter. */ | |
14892 | result.is_unsigned = false; | |
14893 | } | |
14894 | else | |
14895 | { | |
14896 | result.discriminant_index = iter->second; | |
14897 | result.is_unsigned | |
b6cdac4b | 14898 | = TYPE_UNSIGNED (fi->fields[result.discriminant_index].field.type ()); |
9c6a1327 TT |
14899 | } |
14900 | ||
14901 | size_t n = builder.variants.size (); | |
14902 | variant *output = new (obstack) variant[n]; | |
14903 | for (size_t i = 0; i < n; ++i) | |
14904 | create_one_variant (output[i], obstack, offset_map, fi, | |
14905 | builder.variants[i]); | |
14906 | ||
14907 | result.variants = gdb::array_view<variant> (output, n); | |
14908 | } | |
14909 | ||
14910 | /* Create a vector of variant parts that can be attached to a type. | |
14911 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
14912 | holds the mapping from section offsets to fields for the type. FI | |
14913 | describes the fields of the type we're processing. VARIANT_PARTS | |
14914 | is the vector to convert. */ | |
14915 | ||
14916 | static const gdb::array_view<variant_part> | |
14917 | create_variant_parts (struct obstack *obstack, | |
14918 | const offset_map_type &offset_map, | |
14919 | struct field_info *fi, | |
14920 | const std::vector<variant_part_builder> &variant_parts) | |
14921 | { | |
14922 | if (variant_parts.empty ()) | |
14923 | return {}; | |
14924 | ||
14925 | size_t n = variant_parts.size (); | |
14926 | variant_part *result = new (obstack) variant_part[n]; | |
14927 | for (size_t i = 0; i < n; ++i) | |
14928 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
14929 | variant_parts[i]); | |
14930 | ||
14931 | return gdb::array_view<variant_part> (result, n); | |
14932 | } | |
14933 | ||
14934 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
14935 | done. */ | |
14936 | ||
14937 | static void | |
14938 | add_variant_property (struct field_info *fip, struct type *type, | |
14939 | struct dwarf2_cu *cu) | |
14940 | { | |
14941 | /* Map section offsets of fields to their field index. Note the | |
14942 | field index here does not take the number of baseclasses into | |
14943 | account. */ | |
14944 | offset_map_type offset_map; | |
14945 | for (int i = 0; i < fip->fields.size (); ++i) | |
14946 | offset_map[fip->fields[i].offset] = i; | |
14947 | ||
5e22e966 | 14948 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
14949 | gdb::array_view<variant_part> parts |
14950 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
14951 | fip->variant_parts); | |
14952 | ||
14953 | struct dynamic_prop prop; | |
14954 | prop.kind = PROP_VARIANT_PARTS; | |
14955 | prop.data.variant_parts | |
14956 | = ((gdb::array_view<variant_part> *) | |
14957 | obstack_copy (&objfile->objfile_obstack, &parts, sizeof (parts))); | |
14958 | ||
5c54719c | 14959 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
14960 | } |
14961 | ||
c906108c SS |
14962 | /* Create the vector of fields, and attach it to the type. */ |
14963 | ||
14964 | static void | |
fba45db2 | 14965 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14966 | struct dwarf2_cu *cu) |
c906108c | 14967 | { |
317f7127 | 14968 | int nfields = fip->nfields (); |
c906108c SS |
14969 | |
14970 | /* Record the field count, allocate space for the array of fields, | |
14971 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 14972 | type->set_num_fields (nfields); |
3cabb6b0 SM |
14973 | type->set_fields |
14974 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 14975 | |
b4ba55a1 | 14976 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14977 | { |
14978 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14979 | ||
14980 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14981 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14982 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14983 | ||
14984 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14985 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14986 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14987 | ||
774b6a14 TT |
14988 | TYPE_FIELD_IGNORE_BITS (type) = |
14989 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14990 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14991 | } |
14992 | ||
14993 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14994 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14995 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14996 | { |
be2daae6 | 14997 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14998 | unsigned char *pointer; |
c906108c SS |
14999 | |
15000 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15001 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15002 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15003 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15004 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15005 | } |
15006 | ||
9c6a1327 TT |
15007 | if (!fip->variant_parts.empty ()) |
15008 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15009 | |
be2daae6 TT |
15010 | /* Copy the saved-up fields into the field vector. */ |
15011 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15012 | { |
be2daae6 TT |
15013 | struct nextfield &field |
15014 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15015 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15016 | |
ceacbf6e | 15017 | type->field (i) = field.field; |
be2daae6 | 15018 | switch (field.accessibility) |
c906108c | 15019 | { |
c5aa993b | 15020 | case DW_ACCESS_private: |
b4ba55a1 | 15021 | if (cu->language != language_ada) |
be2daae6 | 15022 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15023 | break; |
c906108c | 15024 | |
c5aa993b | 15025 | case DW_ACCESS_protected: |
b4ba55a1 | 15026 | if (cu->language != language_ada) |
be2daae6 | 15027 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15028 | break; |
c906108c | 15029 | |
c5aa993b JM |
15030 | case DW_ACCESS_public: |
15031 | break; | |
c906108c | 15032 | |
c5aa993b JM |
15033 | default: |
15034 | /* Unknown accessibility. Complain and treat it as public. */ | |
15035 | { | |
b98664d3 | 15036 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15037 | field.accessibility); |
c5aa993b JM |
15038 | } |
15039 | break; | |
c906108c | 15040 | } |
be2daae6 | 15041 | if (i < fip->baseclasses.size ()) |
c906108c | 15042 | { |
be2daae6 | 15043 | switch (field.virtuality) |
c906108c | 15044 | { |
c5aa993b JM |
15045 | case DW_VIRTUALITY_virtual: |
15046 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15047 | if (cu->language == language_ada) |
a73c6dcd | 15048 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15049 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15050 | break; |
c906108c SS |
15051 | } |
15052 | } | |
c906108c SS |
15053 | } |
15054 | } | |
15055 | ||
7d27a96d TT |
15056 | /* Return true if this member function is a constructor, false |
15057 | otherwise. */ | |
15058 | ||
15059 | static int | |
15060 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15061 | { | |
15062 | const char *fieldname; | |
fe978cb0 | 15063 | const char *type_name; |
7d27a96d TT |
15064 | int len; |
15065 | ||
15066 | if (die->parent == NULL) | |
15067 | return 0; | |
15068 | ||
15069 | if (die->parent->tag != DW_TAG_structure_type | |
15070 | && die->parent->tag != DW_TAG_union_type | |
15071 | && die->parent->tag != DW_TAG_class_type) | |
15072 | return 0; | |
15073 | ||
15074 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15075 | type_name = dwarf2_name (die->parent, cu); |
15076 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15077 | return 0; |
15078 | ||
15079 | len = strlen (fieldname); | |
fe978cb0 PA |
15080 | return (strncmp (fieldname, type_name, len) == 0 |
15081 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15082 | } |
15083 | ||
e35000a7 TBA |
15084 | /* Check if the given VALUE is a recognized enum |
15085 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
15086 | Table 7.24. */ | |
15087 | ||
15088 | static bool | |
15089 | is_valid_DW_AT_defaulted (ULONGEST value) | |
15090 | { | |
15091 | switch (value) | |
15092 | { | |
15093 | case DW_DEFAULTED_no: | |
15094 | case DW_DEFAULTED_in_class: | |
15095 | case DW_DEFAULTED_out_of_class: | |
15096 | return true; | |
15097 | } | |
15098 | ||
3142e908 | 15099 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
15100 | return false; |
15101 | } | |
15102 | ||
c906108c SS |
15103 | /* Add a member function to the proper fieldlist. */ |
15104 | ||
15105 | static void | |
107d2387 | 15106 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15107 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15108 | { |
5e22e966 | 15109 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15110 | struct attribute *attr; |
c906108c | 15111 | int i; |
be2daae6 | 15112 | struct fnfieldlist *flp = nullptr; |
c906108c | 15113 | struct fn_field *fnp; |
15d034d0 | 15114 | const char *fieldname; |
f792889a | 15115 | struct type *this_type; |
60d5a603 | 15116 | enum dwarf_access_attribute accessibility; |
c906108c | 15117 | |
b4ba55a1 | 15118 | if (cu->language == language_ada) |
a73c6dcd | 15119 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15120 | |
2df3850c | 15121 | /* Get name of member function. */ |
39cbfefa DJ |
15122 | fieldname = dwarf2_name (die, cu); |
15123 | if (fieldname == NULL) | |
2df3850c | 15124 | return; |
c906108c | 15125 | |
c906108c | 15126 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15127 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15128 | { |
27bfe10e | 15129 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15130 | { |
15131 | flp = &fip->fnfieldlists[i]; | |
15132 | break; | |
15133 | } | |
c906108c SS |
15134 | } |
15135 | ||
be2daae6 TT |
15136 | /* Create a new fnfieldlist if necessary. */ |
15137 | if (flp == nullptr) | |
c906108c | 15138 | { |
be2daae6 TT |
15139 | fip->fnfieldlists.emplace_back (); |
15140 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15141 | flp->name = fieldname; |
be2daae6 | 15142 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15143 | } |
15144 | ||
be2daae6 TT |
15145 | /* Create a new member function field and add it to the vector of |
15146 | fnfieldlists. */ | |
15147 | flp->fnfields.emplace_back (); | |
15148 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15149 | |
15150 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15151 | if (cu->language == language_cplus) |
be2daae6 TT |
15152 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15153 | die, cu); | |
3da10d80 KS |
15154 | else |
15155 | { | |
1d06ead6 | 15156 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15157 | fnp->physname = physname ? physname : ""; |
15158 | } | |
15159 | ||
c906108c | 15160 | fnp->type = alloc_type (objfile); |
f792889a | 15161 | this_type = read_type_die (die, cu); |
78134374 | 15162 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15163 | { |
1f704f76 | 15164 | int nparams = this_type->num_fields (); |
c906108c | 15165 | |
f792889a | 15166 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15167 | of the method itself (TYPE_CODE_METHOD). */ |
15168 | smash_to_method_type (fnp->type, type, | |
f792889a | 15169 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15170 | this_type->fields (), |
1f704f76 | 15171 | this_type->num_fields (), |
f792889a | 15172 | TYPE_VARARGS (this_type)); |
c906108c SS |
15173 | |
15174 | /* Handle static member functions. | |
c5aa993b | 15175 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15176 | member functions. G++ helps GDB by marking the first |
15177 | parameter for non-static member functions (which is the this | |
15178 | pointer) as artificial. We obtain this information from | |
15179 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15180 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15181 | fnp->voffset = VOFFSET_STATIC; |
15182 | } | |
15183 | else | |
b98664d3 | 15184 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15185 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15186 | |
15187 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15188 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15189 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15190 | |
3e43a32a MS |
15191 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15192 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15193 | |
15194 | /* Get accessibility. */ | |
e142c38c | 15195 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15196 | if (attr != nullptr) |
aead7601 | 15197 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15198 | else |
15199 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15200 | switch (accessibility) | |
c906108c | 15201 | { |
60d5a603 JK |
15202 | case DW_ACCESS_private: |
15203 | fnp->is_private = 1; | |
15204 | break; | |
15205 | case DW_ACCESS_protected: | |
15206 | fnp->is_protected = 1; | |
15207 | break; | |
c906108c SS |
15208 | } |
15209 | ||
b02dede2 | 15210 | /* Check for artificial methods. */ |
e142c38c | 15211 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15212 | if (attr && DW_UNSND (attr) != 0) |
15213 | fnp->is_artificial = 1; | |
15214 | ||
e35000a7 TBA |
15215 | /* Check for defaulted methods. */ |
15216 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15217 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15218 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15219 | ||
15220 | /* Check for deleted methods. */ | |
15221 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15222 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15223 | fnp->is_deleted = 1; | |
15224 | ||
7d27a96d TT |
15225 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15226 | ||
0d564a31 | 15227 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15228 | function. For older versions of GCC, this is an offset in the |
15229 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15230 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15231 | to the object address. */ |
15232 | ||
e142c38c | 15233 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15234 | if (attr != nullptr) |
8e19ed76 | 15235 | { |
4fc6c0d5 | 15236 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15237 | { |
aec5aa8b TT |
15238 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15239 | { | |
15240 | /* Old-style GCC. */ | |
15241 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15242 | } | |
15243 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15244 | || (DW_BLOCK (attr)->size > 1 | |
15245 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15246 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15247 | { | |
aec5aa8b TT |
15248 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15249 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15250 | dwarf2_complex_location_expr_complaint (); | |
15251 | else | |
15252 | fnp->voffset /= cu->header.addr_size; | |
15253 | fnp->voffset += 2; | |
15254 | } | |
15255 | else | |
15256 | dwarf2_complex_location_expr_complaint (); | |
15257 | ||
15258 | if (!fnp->fcontext) | |
7e993ebf KS |
15259 | { |
15260 | /* If there is no `this' field and no DW_AT_containing_type, | |
15261 | we cannot actually find a base class context for the | |
15262 | vtable! */ | |
1f704f76 | 15263 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15264 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15265 | { | |
b98664d3 | 15266 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15267 | "function \"%s\" (offset %s)"), |
15268 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15269 | } |
15270 | else | |
15271 | { | |
15272 | fnp->fcontext | |
940da03e | 15273 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15274 | } |
15275 | } | |
aec5aa8b | 15276 | } |
cd6c91b4 | 15277 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 15278 | { |
4d3c2250 | 15279 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15280 | } |
15281 | else | |
15282 | { | |
4d3c2250 KB |
15283 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15284 | fieldname); | |
8e19ed76 | 15285 | } |
0d564a31 | 15286 | } |
d48cc9dd DJ |
15287 | else |
15288 | { | |
15289 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15290 | if (attr && DW_UNSND (attr)) | |
15291 | { | |
15292 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15293 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15294 | "but the vtable offset is not specified"), |
9d8780f0 | 15295 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15296 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15297 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15298 | } | |
15299 | } | |
c906108c SS |
15300 | } |
15301 | ||
15302 | /* Create the vector of member function fields, and attach it to the type. */ | |
15303 | ||
15304 | static void | |
fba45db2 | 15305 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15306 | struct dwarf2_cu *cu) |
c906108c | 15307 | { |
b4ba55a1 | 15308 | if (cu->language == language_ada) |
a73c6dcd | 15309 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15310 | |
c906108c SS |
15311 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15312 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15313 | TYPE_ALLOC (type, |
15314 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15315 | |
be2daae6 | 15316 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15317 | { |
be2daae6 | 15318 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15319 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15320 | |
be2daae6 TT |
15321 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15322 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15323 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15324 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15325 | ||
15326 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15327 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15328 | } |
15329 | ||
be2daae6 | 15330 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15331 | } |
15332 | ||
1168df01 JB |
15333 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15334 | language, zero otherwise. */ | |
15335 | static int | |
15336 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15337 | { | |
15338 | static const char vptr[] = "_vptr"; | |
15339 | ||
9c37b5ae TT |
15340 | /* Look for the C++ form of the vtable. */ |
15341 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15342 | return 1; |
15343 | ||
15344 | return 0; | |
15345 | } | |
15346 | ||
c0dd20ea | 15347 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15348 | functions, with the ABI-specified layout. If TYPE describes |
15349 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15350 | |
15351 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15352 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15353 | |
0b92b5bb TT |
15354 | static void |
15355 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15356 | { |
09e2d7c7 | 15357 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15358 | |
15359 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15360 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15361 | return; |
c0dd20ea DJ |
15362 | |
15363 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15364 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15365 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15366 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15367 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15368 | return; | |
c0dd20ea DJ |
15369 | |
15370 | /* Find the type of the method. */ | |
940da03e | 15371 | pfn_type = type->field (0).type (); |
c0dd20ea | 15372 | if (pfn_type == NULL |
78134374 SM |
15373 | || pfn_type->code () != TYPE_CODE_PTR |
15374 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15375 | return; |
c0dd20ea DJ |
15376 | |
15377 | /* Look for the "this" argument. */ | |
15378 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15379 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15380 | /* || pfn_type->field (0).type () == NULL */ |
15381 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15382 | return; |
c0dd20ea | 15383 | |
940da03e | 15384 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15385 | new_type = alloc_type (objfile); |
09e2d7c7 | 15386 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15387 | pfn_type->fields (), pfn_type->num_fields (), |
c0dd20ea | 15388 | TYPE_VARARGS (pfn_type)); |
0b92b5bb | 15389 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15390 | } |
1168df01 | 15391 | |
2b4424c3 TT |
15392 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15393 | appropriate error checking and issuing complaints if there is a | |
15394 | problem. */ | |
15395 | ||
15396 | static ULONGEST | |
15397 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15398 | { | |
15399 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15400 | ||
15401 | if (attr == nullptr) | |
15402 | return 0; | |
15403 | ||
cd6c91b4 | 15404 | if (!attr->form_is_constant ()) |
2b4424c3 | 15405 | { |
b98664d3 | 15406 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15407 | " - DIE at %s [in module %s]"), |
15408 | sect_offset_str (die->sect_off), | |
5e22e966 | 15409 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15410 | return 0; |
15411 | } | |
15412 | ||
15413 | ULONGEST align; | |
15414 | if (attr->form == DW_FORM_sdata) | |
15415 | { | |
15416 | LONGEST val = DW_SND (attr); | |
15417 | if (val < 0) | |
15418 | { | |
b98664d3 | 15419 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15420 | " - DIE at %s [in module %s]"), |
15421 | sect_offset_str (die->sect_off), | |
5e22e966 | 15422 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15423 | return 0; |
15424 | } | |
15425 | align = val; | |
15426 | } | |
15427 | else | |
15428 | align = DW_UNSND (attr); | |
15429 | ||
15430 | if (align == 0) | |
15431 | { | |
b98664d3 | 15432 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15433 | " - DIE at %s [in module %s]"), |
15434 | sect_offset_str (die->sect_off), | |
5e22e966 | 15435 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15436 | return 0; |
15437 | } | |
15438 | if ((align & (align - 1)) != 0) | |
15439 | { | |
b98664d3 | 15440 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15441 | " - DIE at %s [in module %s]"), |
15442 | sect_offset_str (die->sect_off), | |
5e22e966 | 15443 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15444 | return 0; |
15445 | } | |
15446 | ||
15447 | return align; | |
15448 | } | |
15449 | ||
15450 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15451 | the alignment for TYPE. */ | |
15452 | ||
15453 | static void | |
15454 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15455 | struct type *type) | |
15456 | { | |
15457 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15458 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15459 | " - DIE at %s [in module %s]"), |
15460 | sect_offset_str (die->sect_off), | |
5e22e966 | 15461 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15462 | } |
685b1105 | 15463 | |
e35000a7 TBA |
15464 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15465 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15466 | ||
15467 | static bool | |
15468 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15469 | { | |
15470 | switch (value) | |
15471 | { | |
15472 | case DW_CC_normal: | |
15473 | case DW_CC_pass_by_reference: | |
15474 | case DW_CC_pass_by_value: | |
15475 | return true; | |
15476 | ||
15477 | default: | |
15478 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15479 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15480 | return false; |
15481 | } | |
15482 | } | |
15483 | ||
d0922fcf TBA |
15484 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15485 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15486 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15487 | ||
15488 | static bool | |
15489 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15490 | { | |
15491 | switch (value) | |
15492 | { | |
15493 | case DW_CC_normal: | |
15494 | case DW_CC_program: | |
15495 | case DW_CC_nocall: | |
15496 | return true; | |
15497 | ||
15498 | case DW_CC_GNU_renesas_sh: | |
15499 | case DW_CC_GNU_borland_fastcall_i386: | |
15500 | case DW_CC_GDB_IBM_OpenCL: | |
15501 | return true; | |
15502 | ||
15503 | default: | |
15504 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15505 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15506 | return false; |
15507 | } | |
15508 | } | |
15509 | ||
c906108c | 15510 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15511 | (definition) to create a type for the structure or union. Fill in |
15512 | the type's name and general properties; the members will not be | |
83655187 DE |
15513 | processed until process_structure_scope. A symbol table entry for |
15514 | the type will also not be done until process_structure_scope (assuming | |
15515 | the type has a name). | |
c906108c | 15516 | |
c767944b DJ |
15517 | NOTE: we need to call these functions regardless of whether or not the |
15518 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15519 | structure or union. This gets the type entered into our set of |
83655187 | 15520 | user defined types. */ |
c906108c | 15521 | |
f792889a | 15522 | static struct type * |
134d01f1 | 15523 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15524 | { |
5e22e966 | 15525 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15526 | struct type *type; |
15527 | struct attribute *attr; | |
15d034d0 | 15528 | const char *name; |
c906108c | 15529 | |
348e048f DE |
15530 | /* If the definition of this type lives in .debug_types, read that type. |
15531 | Don't follow DW_AT_specification though, that will take us back up | |
15532 | the chain and we want to go down. */ | |
052c8bb8 | 15533 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15534 | if (attr != nullptr) |
348e048f | 15535 | { |
ac9ec31b | 15536 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15537 | |
ac9ec31b | 15538 | /* The type's CU may not be the same as CU. |
02142a6c | 15539 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15540 | return set_die_type (die, type, cu); |
15541 | } | |
15542 | ||
c0dd20ea | 15543 | type = alloc_type (objfile); |
c906108c | 15544 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15545 | |
39cbfefa DJ |
15546 | name = dwarf2_name (die, cu); |
15547 | if (name != NULL) | |
c906108c | 15548 | { |
987504bb | 15549 | if (cu->language == language_cplus |
c44af4eb TT |
15550 | || cu->language == language_d |
15551 | || cu->language == language_rust) | |
63d06c5c | 15552 | { |
15d034d0 | 15553 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15554 | |
15555 | /* dwarf2_full_name might have already finished building the DIE's | |
15556 | type. If so, there is no need to continue. */ | |
15557 | if (get_die_type (die, cu) != NULL) | |
15558 | return get_die_type (die, cu); | |
15559 | ||
d0e39ea2 | 15560 | type->set_name (full_name); |
63d06c5c DC |
15561 | } |
15562 | else | |
15563 | { | |
d8151005 DJ |
15564 | /* The name is already allocated along with this objfile, so |
15565 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 15566 | type->set_name (name); |
63d06c5c | 15567 | } |
c906108c SS |
15568 | } |
15569 | ||
15570 | if (die->tag == DW_TAG_structure_type) | |
15571 | { | |
67607e24 | 15572 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15573 | } |
15574 | else if (die->tag == DW_TAG_union_type) | |
15575 | { | |
67607e24 | 15576 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
15577 | } |
15578 | else | |
15579 | { | |
67607e24 | 15580 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15581 | } |
15582 | ||
0cc2414c TT |
15583 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15584 | TYPE_DECLARED_CLASS (type) = 1; | |
15585 | ||
e35000a7 TBA |
15586 | /* Store the calling convention in the type if it's available in |
15587 | the die. Otherwise the calling convention remains set to | |
15588 | the default value DW_CC_normal. */ | |
15589 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15590 | if (attr != nullptr | |
15591 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15592 | { | |
15593 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15594 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15595 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15596 | } | |
15597 | ||
e142c38c | 15598 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15599 | if (attr != nullptr) |
c906108c | 15600 | { |
cd6c91b4 | 15601 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15602 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15603 | else | |
15604 | { | |
f8e89861 | 15605 | struct dynamic_prop prop; |
293e7e51 | 15606 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 15607 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
155bfbd3 JB |
15608 | TYPE_LENGTH (type) = 0; |
15609 | } | |
c906108c SS |
15610 | } |
15611 | else | |
15612 | { | |
15613 | TYPE_LENGTH (type) = 0; | |
15614 | } | |
15615 | ||
2b4424c3 TT |
15616 | maybe_set_alignment (cu, die, type); |
15617 | ||
5230b05a | 15618 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15619 | { |
5230b05a WT |
15620 | /* ICC<14 does not output the required DW_AT_declaration on |
15621 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15622 | TYPE_STUB (type) = 1; |
685b1105 JK |
15623 | } |
15624 | else | |
15625 | TYPE_STUB_SUPPORTED (type) = 1; | |
15626 | ||
dc718098 | 15627 | if (die_is_declaration (die, cu)) |
876cecd0 | 15628 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15629 | else if (attr == NULL && die->child == NULL |
15630 | && producer_is_realview (cu->producer)) | |
15631 | /* RealView does not output the required DW_AT_declaration | |
15632 | on incomplete types. */ | |
15633 | TYPE_STUB (type) = 1; | |
dc718098 | 15634 | |
c906108c SS |
15635 | /* We need to add the type field to the die immediately so we don't |
15636 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15637 | type within the structure itself. */ |
1c379e20 | 15638 | set_die_type (die, type, cu); |
c906108c | 15639 | |
7e314c57 JK |
15640 | /* set_die_type should be already done. */ |
15641 | set_descriptive_type (type, die, cu); | |
15642 | ||
c767944b DJ |
15643 | return type; |
15644 | } | |
15645 | ||
9c6a1327 TT |
15646 | static void handle_struct_member_die |
15647 | (struct die_info *child_die, | |
15648 | struct type *type, | |
15649 | struct field_info *fi, | |
15650 | std::vector<struct symbol *> *template_args, | |
15651 | struct dwarf2_cu *cu); | |
15652 | ||
15653 | /* A helper for handle_struct_member_die that handles | |
15654 | DW_TAG_variant_part. */ | |
15655 | ||
15656 | static void | |
15657 | handle_variant_part (struct die_info *die, struct type *type, | |
15658 | struct field_info *fi, | |
15659 | std::vector<struct symbol *> *template_args, | |
15660 | struct dwarf2_cu *cu) | |
15661 | { | |
15662 | variant_part_builder *new_part; | |
15663 | if (fi->current_variant_part == nullptr) | |
15664 | { | |
15665 | fi->variant_parts.emplace_back (); | |
15666 | new_part = &fi->variant_parts.back (); | |
15667 | } | |
15668 | else if (!fi->current_variant_part->processing_variant) | |
15669 | { | |
15670 | complaint (_("nested DW_TAG_variant_part seen " | |
15671 | "- DIE at %s [in module %s]"), | |
15672 | sect_offset_str (die->sect_off), | |
5e22e966 | 15673 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15674 | return; |
15675 | } | |
15676 | else | |
15677 | { | |
15678 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
15679 | current.variant_parts.emplace_back (); | |
15680 | new_part = ¤t.variant_parts.back (); | |
15681 | } | |
15682 | ||
15683 | /* When we recurse, we want callees to add to this new variant | |
15684 | part. */ | |
15685 | scoped_restore save_current_variant_part | |
15686 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
15687 | ||
15688 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15689 | if (discr == NULL) | |
15690 | { | |
15691 | /* It's a univariant form, an extension we support. */ | |
15692 | } | |
15693 | else if (discr->form_is_ref ()) | |
15694 | { | |
15695 | struct dwarf2_cu *target_cu = cu; | |
15696 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15697 | ||
15698 | new_part->discriminant_offset = target_die->sect_off; | |
15699 | } | |
15700 | else | |
15701 | { | |
15702 | complaint (_("DW_AT_discr does not have DIE reference form" | |
15703 | " - DIE at %s [in module %s]"), | |
15704 | sect_offset_str (die->sect_off), | |
5e22e966 | 15705 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15706 | } |
15707 | ||
15708 | for (die_info *child_die = die->child; | |
15709 | child_die != NULL; | |
15710 | child_die = child_die->sibling) | |
15711 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
15712 | } | |
15713 | ||
15714 | /* A helper for handle_struct_member_die that handles | |
15715 | DW_TAG_variant. */ | |
15716 | ||
15717 | static void | |
15718 | handle_variant (struct die_info *die, struct type *type, | |
15719 | struct field_info *fi, | |
15720 | std::vector<struct symbol *> *template_args, | |
15721 | struct dwarf2_cu *cu) | |
15722 | { | |
15723 | if (fi->current_variant_part == nullptr) | |
15724 | { | |
15725 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
15726 | "- DIE at %s [in module %s]"), | |
15727 | sect_offset_str (die->sect_off), | |
5e22e966 | 15728 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15729 | return; |
15730 | } | |
15731 | if (fi->current_variant_part->processing_variant) | |
15732 | { | |
15733 | complaint (_("nested DW_TAG_variant seen " | |
15734 | "- DIE at %s [in module %s]"), | |
15735 | sect_offset_str (die->sect_off), | |
5e22e966 | 15736 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15737 | return; |
15738 | } | |
15739 | ||
15740 | scoped_restore save_processing_variant | |
15741 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
15742 | true); | |
15743 | ||
15744 | fi->current_variant_part->variants.emplace_back (); | |
15745 | variant_field &variant = fi->current_variant_part->variants.back (); | |
15746 | variant.first_field = fi->fields.size (); | |
15747 | ||
15748 | /* In a variant we want to get the discriminant and also add a | |
15749 | field for our sole member child. */ | |
15750 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
15751 | if (discr == nullptr) | |
15752 | { | |
15753 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
15754 | if (discr == nullptr || DW_BLOCK (discr)->size == 0) | |
15755 | variant.default_branch = true; | |
15756 | else | |
15757 | variant.discr_list_data = DW_BLOCK (discr); | |
15758 | } | |
15759 | else | |
15760 | variant.discriminant_value = DW_UNSND (discr); | |
15761 | ||
15762 | for (die_info *variant_child = die->child; | |
15763 | variant_child != NULL; | |
15764 | variant_child = variant_child->sibling) | |
15765 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
15766 | ||
15767 | variant.last_field = fi->fields.size (); | |
15768 | } | |
15769 | ||
2ddeaf8a TT |
15770 | /* A helper for process_structure_scope that handles a single member |
15771 | DIE. */ | |
15772 | ||
15773 | static void | |
15774 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15775 | struct field_info *fi, | |
15776 | std::vector<struct symbol *> *template_args, | |
15777 | struct dwarf2_cu *cu) | |
15778 | { | |
15779 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 15780 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
15781 | { |
15782 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15783 | should be a DW_TAG_member that is a declaration, but | |
15784 | all versions of G++ as of this writing (so through at | |
15785 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15786 | tags for them instead. */ | |
15787 | dwarf2_add_field (fi, child_die, cu); | |
15788 | } | |
15789 | else if (child_die->tag == DW_TAG_subprogram) | |
15790 | { | |
15791 | /* Rust doesn't have member functions in the C++ sense. | |
15792 | However, it does emit ordinary functions as children | |
15793 | of a struct DIE. */ | |
15794 | if (cu->language == language_rust) | |
15795 | read_func_scope (child_die, cu); | |
15796 | else | |
15797 | { | |
15798 | /* C++ member function. */ | |
15799 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15800 | } | |
15801 | } | |
15802 | else if (child_die->tag == DW_TAG_inheritance) | |
15803 | { | |
15804 | /* C++ base class field. */ | |
15805 | dwarf2_add_field (fi, child_die, cu); | |
15806 | } | |
15807 | else if (type_can_define_types (child_die)) | |
15808 | dwarf2_add_type_defn (fi, child_die, cu); | |
15809 | else if (child_die->tag == DW_TAG_template_type_param | |
15810 | || child_die->tag == DW_TAG_template_value_param) | |
15811 | { | |
15812 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15813 | ||
15814 | if (arg != NULL) | |
15815 | template_args->push_back (arg); | |
15816 | } | |
9c6a1327 TT |
15817 | else if (child_die->tag == DW_TAG_variant_part) |
15818 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 15819 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 15820 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
15821 | } |
15822 | ||
c767944b DJ |
15823 | /* Finish creating a structure or union type, including filling in |
15824 | its members and creating a symbol for it. */ | |
15825 | ||
15826 | static void | |
15827 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15828 | { | |
5e22e966 | 15829 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 15830 | struct die_info *child_die; |
c767944b DJ |
15831 | struct type *type; |
15832 | ||
15833 | type = get_die_type (die, cu); | |
15834 | if (type == NULL) | |
15835 | type = read_structure_type (die, cu); | |
15836 | ||
3e1d3d8c | 15837 | bool has_template_parameters = false; |
e142c38c | 15838 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15839 | { |
15840 | struct field_info fi; | |
2f4732b0 | 15841 | std::vector<struct symbol *> template_args; |
c906108c | 15842 | |
639d11d3 | 15843 | child_die = die->child; |
c906108c SS |
15844 | |
15845 | while (child_die && child_die->tag) | |
15846 | { | |
2ddeaf8a | 15847 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 15848 | child_die = child_die->sibling; |
c906108c SS |
15849 | } |
15850 | ||
34eaf542 | 15851 | /* Attach template arguments to type. */ |
2f4732b0 | 15852 | if (!template_args.empty ()) |
34eaf542 | 15853 | { |
3e1d3d8c | 15854 | has_template_parameters = true; |
34eaf542 | 15855 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15856 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15857 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15858 | = XOBNEWVEC (&objfile->objfile_obstack, |
15859 | struct symbol *, | |
15860 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15861 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15862 | template_args.data (), |
34eaf542 TT |
15863 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15864 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15865 | } |
15866 | ||
c906108c | 15867 | /* Attach fields and member functions to the type. */ |
317f7127 | 15868 | if (fi.nfields () > 0) |
e7c27a73 | 15869 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15870 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15871 | { |
e7c27a73 | 15872 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15873 | |
c5aa993b | 15874 | /* Get the type which refers to the base class (possibly this |
c906108c | 15875 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15876 | class from the DW_AT_containing_type attribute. This use of |
15877 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15878 | |
e142c38c | 15879 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15880 | { |
e7c27a73 | 15881 | struct type *t = die_containing_type (die, cu); |
c906108c | 15882 | |
ae6ae975 | 15883 | set_type_vptr_basetype (type, t); |
c906108c SS |
15884 | if (type == t) |
15885 | { | |
c906108c SS |
15886 | int i; |
15887 | ||
15888 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 15889 | for (i = t->num_fields () - 1; |
c906108c SS |
15890 | i >= TYPE_N_BASECLASSES (t); |
15891 | --i) | |
15892 | { | |
0d5cff50 | 15893 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15894 | |
1168df01 | 15895 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15896 | { |
ae6ae975 | 15897 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15898 | break; |
15899 | } | |
15900 | } | |
15901 | ||
15902 | /* Complain if virtual function table field not found. */ | |
15903 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15904 | complaint (_("virtual function table pointer " |
3e43a32a | 15905 | "not found when defining class '%s'"), |
7d93a1e0 | 15906 | type->name () ? type->name () : ""); |
c906108c SS |
15907 | } |
15908 | else | |
15909 | { | |
ae6ae975 | 15910 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15911 | } |
15912 | } | |
f6235d4c | 15913 | else if (cu->producer |
61012eef | 15914 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15915 | { |
15916 | /* The IBM XLC compiler does not provide direct indication | |
15917 | of the containing type, but the vtable pointer is | |
15918 | always named __vfp. */ | |
15919 | ||
15920 | int i; | |
15921 | ||
1f704f76 | 15922 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
15923 | i >= TYPE_N_BASECLASSES (type); |
15924 | --i) | |
15925 | { | |
15926 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15927 | { | |
ae6ae975 DE |
15928 | set_type_vptr_fieldno (type, i); |
15929 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15930 | break; |
15931 | } | |
15932 | } | |
15933 | } | |
c906108c | 15934 | } |
98751a41 JK |
15935 | |
15936 | /* Copy fi.typedef_field_list linked list elements content into the | |
15937 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15938 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15939 | { |
be2daae6 | 15940 | int count = fi.typedef_field_list.size (); |
98751a41 | 15941 | |
a0d7a4ff | 15942 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15943 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15944 | = ((struct decl_field *) |
be2daae6 TT |
15945 | TYPE_ALLOC (type, |
15946 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15947 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15948 | |
be2daae6 TT |
15949 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15950 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15951 | } |
c767944b | 15952 | |
883fd55a KS |
15953 | /* Copy fi.nested_types_list linked list elements content into the |
15954 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15955 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15956 | { |
be2daae6 | 15957 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15958 | |
15959 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15960 | TYPE_NESTED_TYPES_ARRAY (type) | |
15961 | = ((struct decl_field *) | |
be2daae6 TT |
15962 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15963 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15964 | |
be2daae6 TT |
15965 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15966 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15967 | } |
c906108c | 15968 | } |
63d06c5c | 15969 | |
bb5ed363 | 15970 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15971 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15972 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15973 | |
90aeadfc DC |
15974 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15975 | snapshots) has been known to create a die giving a declaration | |
15976 | for a class that has, as a child, a die giving a definition for a | |
15977 | nested class. So we have to process our children even if the | |
15978 | current die is a declaration. Normally, of course, a declaration | |
15979 | won't have any children at all. */ | |
134d01f1 | 15980 | |
ca040673 DE |
15981 | child_die = die->child; |
15982 | ||
90aeadfc DC |
15983 | while (child_die != NULL && child_die->tag) |
15984 | { | |
15985 | if (child_die->tag == DW_TAG_member | |
15986 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15987 | || child_die->tag == DW_TAG_inheritance |
15988 | || child_die->tag == DW_TAG_template_value_param | |
15989 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15990 | { |
90aeadfc | 15991 | /* Do nothing. */ |
134d01f1 | 15992 | } |
90aeadfc DC |
15993 | else |
15994 | process_die (child_die, cu); | |
134d01f1 | 15995 | |
436c571c | 15996 | child_die = child_die->sibling; |
134d01f1 DJ |
15997 | } |
15998 | ||
fa4028e9 JB |
15999 | /* Do not consider external references. According to the DWARF standard, |
16000 | these DIEs are identified by the fact that they have no byte_size | |
16001 | attribute, and a declaration attribute. */ | |
16002 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16003 | || !die_is_declaration (die, cu) |
16004 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16005 | { |
16006 | struct symbol *sym = new_symbol (die, type, cu); | |
16007 | ||
16008 | if (has_template_parameters) | |
16009 | { | |
a776957c TT |
16010 | struct symtab *symtab; |
16011 | if (sym != nullptr) | |
16012 | symtab = symbol_symtab (sym); | |
16013 | else if (cu->line_header != nullptr) | |
16014 | { | |
16015 | /* Any related symtab will do. */ | |
16016 | symtab | |
7ba99d21 | 16017 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16018 | } |
16019 | else | |
16020 | { | |
16021 | symtab = nullptr; | |
16022 | complaint (_("could not find suitable " | |
16023 | "symtab for template parameter" | |
16024 | " - DIE at %s [in module %s]"), | |
16025 | sect_offset_str (die->sect_off), | |
16026 | objfile_name (objfile)); | |
16027 | } | |
16028 | ||
16029 | if (symtab != nullptr) | |
16030 | { | |
16031 | /* Make sure that the symtab is set on the new symbols. | |
16032 | Even though they don't appear in this symtab directly, | |
16033 | other parts of gdb assume that symbols do, and this is | |
16034 | reasonably true. */ | |
16035 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16036 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16037 | } | |
3e1d3d8c TT |
16038 | } |
16039 | } | |
134d01f1 DJ |
16040 | } |
16041 | ||
ed6acedd TT |
16042 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16043 | type, update TYPE using some information only available in DIE's | |
16044 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16045 | |
16046 | static void | |
16047 | update_enumeration_type_from_children (struct die_info *die, | |
16048 | struct type *type, | |
16049 | struct dwarf2_cu *cu) | |
16050 | { | |
60f7655a | 16051 | struct die_info *child_die; |
55426c9d JB |
16052 | int unsigned_enum = 1; |
16053 | int flag_enum = 1; | |
55426c9d | 16054 | |
8268c778 | 16055 | auto_obstack obstack; |
ed6acedd | 16056 | std::vector<struct field> fields; |
55426c9d | 16057 | |
60f7655a DE |
16058 | for (child_die = die->child; |
16059 | child_die != NULL && child_die->tag; | |
436c571c | 16060 | child_die = child_die->sibling) |
55426c9d JB |
16061 | { |
16062 | struct attribute *attr; | |
16063 | LONGEST value; | |
16064 | const gdb_byte *bytes; | |
16065 | struct dwarf2_locexpr_baton *baton; | |
16066 | const char *name; | |
60f7655a | 16067 | |
55426c9d JB |
16068 | if (child_die->tag != DW_TAG_enumerator) |
16069 | continue; | |
16070 | ||
16071 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16072 | if (attr == NULL) | |
16073 | continue; | |
16074 | ||
16075 | name = dwarf2_name (child_die, cu); | |
16076 | if (name == NULL) | |
16077 | name = "<anonymous enumerator>"; | |
16078 | ||
16079 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16080 | &value, &bytes, &baton); | |
16081 | if (value < 0) | |
16082 | { | |
16083 | unsigned_enum = 0; | |
16084 | flag_enum = 0; | |
16085 | } | |
55426c9d | 16086 | else |
edd45eb0 SM |
16087 | { |
16088 | if (count_one_bits_ll (value) >= 2) | |
16089 | flag_enum = 0; | |
edd45eb0 | 16090 | } |
55426c9d | 16091 | |
ed6acedd TT |
16092 | fields.emplace_back (); |
16093 | struct field &field = fields.back (); | |
16094 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16095 | SET_FIELD_ENUMVAL (field, value); | |
16096 | } | |
16097 | ||
16098 | if (!fields.empty ()) | |
16099 | { | |
5e33d5f4 | 16100 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16101 | type->set_fields |
16102 | ((struct field *) | |
16103 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16104 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16105 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16106 | } |
16107 | ||
16108 | if (unsigned_enum) | |
16109 | TYPE_UNSIGNED (type) = 1; | |
16110 | if (flag_enum) | |
16111 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16112 | } |
16113 | ||
134d01f1 DJ |
16114 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16115 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16116 | |
f792889a | 16117 | static struct type * |
134d01f1 | 16118 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16119 | { |
5e22e966 | 16120 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16121 | struct type *type; |
c906108c | 16122 | struct attribute *attr; |
0114d602 | 16123 | const char *name; |
134d01f1 | 16124 | |
348e048f DE |
16125 | /* If the definition of this type lives in .debug_types, read that type. |
16126 | Don't follow DW_AT_specification though, that will take us back up | |
16127 | the chain and we want to go down. */ | |
052c8bb8 | 16128 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16129 | if (attr != nullptr) |
348e048f | 16130 | { |
ac9ec31b | 16131 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16132 | |
ac9ec31b | 16133 | /* The type's CU may not be the same as CU. |
02142a6c | 16134 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16135 | return set_die_type (die, type, cu); |
16136 | } | |
16137 | ||
c906108c SS |
16138 | type = alloc_type (objfile); |
16139 | ||
67607e24 | 16140 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16141 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16142 | if (name != NULL) |
d0e39ea2 | 16143 | type->set_name (name); |
c906108c | 16144 | |
0626fc76 TT |
16145 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16146 | if (attr != NULL) | |
16147 | { | |
16148 | struct type *underlying_type = die_type (die, cu); | |
16149 | ||
16150 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16151 | } | |
16152 | ||
e142c38c | 16153 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16154 | if (attr != nullptr) |
c906108c SS |
16155 | { |
16156 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16157 | } | |
16158 | else | |
16159 | { | |
16160 | TYPE_LENGTH (type) = 0; | |
16161 | } | |
16162 | ||
2b4424c3 TT |
16163 | maybe_set_alignment (cu, die, type); |
16164 | ||
137033e9 JB |
16165 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16166 | declared as private in the package spec, and then defined only | |
16167 | inside the package body. Such types are known as Taft Amendment | |
16168 | Types. When another package uses such a type, an incomplete DIE | |
16169 | may be generated by the compiler. */ | |
02eb380e | 16170 | if (die_is_declaration (die, cu)) |
876cecd0 | 16171 | TYPE_STUB (type) = 1; |
02eb380e | 16172 | |
0626fc76 TT |
16173 | /* If this type has an underlying type that is not a stub, then we |
16174 | may use its attributes. We always use the "unsigned" attribute | |
16175 | in this situation, because ordinarily we guess whether the type | |
16176 | is unsigned -- but the guess can be wrong and the underlying type | |
16177 | can tell us the reality. However, we defer to a local size | |
16178 | attribute if one exists, because this lets the compiler override | |
16179 | the underlying type if needed. */ | |
16180 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16181 | { | |
9e7c9a03 HD |
16182 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16183 | underlying_type = check_typedef (underlying_type); | |
16184 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (underlying_type); | |
0626fc76 | 16185 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16186 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
2b4424c3 | 16187 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16188 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16189 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16190 | } |
16191 | ||
3d567982 TT |
16192 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16193 | ||
ed6acedd TT |
16194 | set_die_type (die, type, cu); |
16195 | ||
16196 | /* Finish the creation of this type by using the enum's children. | |
16197 | Note that, as usual, this must come after set_die_type to avoid | |
16198 | infinite recursion when trying to compute the names of the | |
16199 | enumerators. */ | |
16200 | update_enumeration_type_from_children (die, type, cu); | |
16201 | ||
16202 | return type; | |
134d01f1 DJ |
16203 | } |
16204 | ||
16205 | /* Given a pointer to a die which begins an enumeration, process all | |
16206 | the dies that define the members of the enumeration, and create the | |
16207 | symbol for the enumeration type. | |
16208 | ||
16209 | NOTE: We reverse the order of the element list. */ | |
16210 | ||
16211 | static void | |
16212 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16213 | { | |
f792889a | 16214 | struct type *this_type; |
134d01f1 | 16215 | |
f792889a DJ |
16216 | this_type = get_die_type (die, cu); |
16217 | if (this_type == NULL) | |
16218 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16219 | |
639d11d3 | 16220 | if (die->child != NULL) |
c906108c | 16221 | { |
9dc481d3 | 16222 | struct die_info *child_die; |
15d034d0 | 16223 | const char *name; |
9dc481d3 | 16224 | |
639d11d3 | 16225 | child_die = die->child; |
c906108c SS |
16226 | while (child_die && child_die->tag) |
16227 | { | |
16228 | if (child_die->tag != DW_TAG_enumerator) | |
16229 | { | |
e7c27a73 | 16230 | process_die (child_die, cu); |
c906108c SS |
16231 | } |
16232 | else | |
16233 | { | |
39cbfefa DJ |
16234 | name = dwarf2_name (child_die, cu); |
16235 | if (name) | |
ed6acedd | 16236 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16237 | } |
16238 | ||
436c571c | 16239 | child_die = child_die->sibling; |
c906108c | 16240 | } |
c906108c | 16241 | } |
134d01f1 | 16242 | |
6c83ed52 TT |
16243 | /* If we are reading an enum from a .debug_types unit, and the enum |
16244 | is a declaration, and the enum is not the signatured type in the | |
16245 | unit, then we do not want to add a symbol for it. Adding a | |
16246 | symbol would in some cases obscure the true definition of the | |
16247 | enum, giving users an incomplete type when the definition is | |
16248 | actually available. Note that we do not want to do this for all | |
16249 | enums which are just declarations, because C++0x allows forward | |
16250 | enum declarations. */ | |
3019eac3 | 16251 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16252 | && die_is_declaration (die, cu)) |
16253 | { | |
52dc124a | 16254 | struct signatured_type *sig_type; |
6c83ed52 | 16255 | |
c0f78cd4 | 16256 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16257 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16258 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16259 | return; |
16260 | } | |
16261 | ||
f792889a | 16262 | new_symbol (die, this_type, cu); |
c906108c SS |
16263 | } |
16264 | ||
16265 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16266 | the DIE's type field. For now, this only handles one dimensional | |
16267 | arrays. */ | |
16268 | ||
f792889a | 16269 | static struct type * |
e7c27a73 | 16270 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16271 | { |
5e22e966 | 16272 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16273 | struct die_info *child_die; |
7e314c57 | 16274 | struct type *type; |
c906108c | 16275 | struct type *element_type, *range_type, *index_type; |
c906108c | 16276 | struct attribute *attr; |
15d034d0 | 16277 | const char *name; |
a405673c | 16278 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16279 | unsigned int bit_stride = 0; |
c906108c | 16280 | |
e7c27a73 | 16281 | element_type = die_type (die, cu); |
c906108c | 16282 | |
7e314c57 JK |
16283 | /* The die_type call above may have already set the type for this DIE. */ |
16284 | type = get_die_type (die, cu); | |
16285 | if (type) | |
16286 | return type; | |
16287 | ||
dc53a7ad JB |
16288 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16289 | if (attr != NULL) | |
a405673c JB |
16290 | { |
16291 | int stride_ok; | |
293e7e51 | 16292 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
16293 | |
16294 | byte_stride_prop | |
16295 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16296 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16297 | prop_type); | |
a405673c JB |
16298 | if (!stride_ok) |
16299 | { | |
b98664d3 | 16300 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16301 | " - DIE at %s [in module %s]"), |
16302 | sect_offset_str (die->sect_off), | |
5e22e966 | 16303 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
16304 | /* Ignore this attribute. We will likely not be able to print |
16305 | arrays of this type correctly, but there is little we can do | |
16306 | to help if we cannot read the attribute's value. */ | |
16307 | byte_stride_prop = NULL; | |
16308 | } | |
16309 | } | |
dc53a7ad JB |
16310 | |
16311 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16312 | if (attr != NULL) | |
16313 | bit_stride = DW_UNSND (attr); | |
16314 | ||
c906108c SS |
16315 | /* Irix 6.2 native cc creates array types without children for |
16316 | arrays with unspecified length. */ | |
639d11d3 | 16317 | if (die->child == NULL) |
c906108c | 16318 | { |
46bf5051 | 16319 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16320 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16321 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16322 | byte_stride_prop, bit_stride); |
f792889a | 16323 | return set_die_type (die, type, cu); |
c906108c SS |
16324 | } |
16325 | ||
791afaa2 | 16326 | std::vector<struct type *> range_types; |
639d11d3 | 16327 | child_die = die->child; |
c906108c SS |
16328 | while (child_die && child_die->tag) |
16329 | { | |
16330 | if (child_die->tag == DW_TAG_subrange_type) | |
16331 | { | |
f792889a | 16332 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16333 | |
f792889a | 16334 | if (child_type != NULL) |
a02abb62 | 16335 | { |
0963b4bd MS |
16336 | /* The range type was succesfully read. Save it for the |
16337 | array type creation. */ | |
791afaa2 | 16338 | range_types.push_back (child_type); |
a02abb62 | 16339 | } |
c906108c | 16340 | } |
436c571c | 16341 | child_die = child_die->sibling; |
c906108c SS |
16342 | } |
16343 | ||
16344 | /* Dwarf2 dimensions are output from left to right, create the | |
16345 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16346 | |
c906108c | 16347 | type = element_type; |
7ca2d3a3 DL |
16348 | |
16349 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16350 | { | |
16351 | int i = 0; | |
9a619af0 | 16352 | |
791afaa2 | 16353 | while (i < range_types.size ()) |
dc53a7ad | 16354 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16355 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16356 | } |
16357 | else | |
16358 | { | |
791afaa2 | 16359 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16360 | while (ndim-- > 0) |
dc53a7ad | 16361 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16362 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16363 | } |
c906108c | 16364 | |
f5f8a009 EZ |
16365 | /* Understand Dwarf2 support for vector types (like they occur on |
16366 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16367 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16368 | custom vendor extension. The main difference between a regular | |
16369 | array and the vector variant is that vectors are passed by value | |
16370 | to functions. */ | |
e142c38c | 16371 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16372 | if (attr != nullptr) |
ea37ba09 | 16373 | make_vector_type (type); |
f5f8a009 | 16374 | |
dbc98a8b KW |
16375 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16376 | implementation may choose to implement triple vectors using this | |
16377 | attribute. */ | |
16378 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16379 | if (attr != nullptr) |
dbc98a8b KW |
16380 | { |
16381 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16382 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16383 | else | |
b98664d3 | 16384 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16385 | "than the total size of elements")); |
dbc98a8b KW |
16386 | } |
16387 | ||
39cbfefa DJ |
16388 | name = dwarf2_name (die, cu); |
16389 | if (name) | |
d0e39ea2 | 16390 | type->set_name (name); |
6e70227d | 16391 | |
2b4424c3 TT |
16392 | maybe_set_alignment (cu, die, type); |
16393 | ||
0963b4bd | 16394 | /* Install the type in the die. */ |
7e314c57 JK |
16395 | set_die_type (die, type, cu); |
16396 | ||
16397 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16398 | set_descriptive_type (type, die, cu); |
16399 | ||
7e314c57 | 16400 | return type; |
c906108c SS |
16401 | } |
16402 | ||
7ca2d3a3 | 16403 | static enum dwarf_array_dim_ordering |
6e70227d | 16404 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16405 | { |
16406 | struct attribute *attr; | |
16407 | ||
16408 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16409 | ||
435d3d88 | 16410 | if (attr != nullptr) |
aead7601 | 16411 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16412 | |
0963b4bd MS |
16413 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16414 | opposite order to the dwarf2 specification, but data is still | |
16415 | laid out as per normal fortran. | |
7ca2d3a3 | 16416 | |
0963b4bd MS |
16417 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16418 | version checking. */ | |
7ca2d3a3 | 16419 | |
905e0470 PM |
16420 | if (cu->language == language_fortran |
16421 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16422 | { |
16423 | return DW_ORD_row_major; | |
16424 | } | |
16425 | ||
6e70227d | 16426 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16427 | { |
16428 | case array_column_major: | |
16429 | return DW_ORD_col_major; | |
16430 | case array_row_major: | |
16431 | default: | |
16432 | return DW_ORD_row_major; | |
16433 | }; | |
16434 | } | |
16435 | ||
72019c9c | 16436 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16437 | the DIE's type field. */ |
72019c9c | 16438 | |
f792889a | 16439 | static struct type * |
72019c9c GM |
16440 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16441 | { | |
7e314c57 JK |
16442 | struct type *domain_type, *set_type; |
16443 | struct attribute *attr; | |
f792889a | 16444 | |
7e314c57 JK |
16445 | domain_type = die_type (die, cu); |
16446 | ||
16447 | /* The die_type call above may have already set the type for this DIE. */ | |
16448 | set_type = get_die_type (die, cu); | |
16449 | if (set_type) | |
16450 | return set_type; | |
16451 | ||
16452 | set_type = create_set_type (NULL, domain_type); | |
16453 | ||
16454 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16455 | if (attr != nullptr) |
d09039dd | 16456 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16457 | |
2b4424c3 TT |
16458 | maybe_set_alignment (cu, die, set_type); |
16459 | ||
f792889a | 16460 | return set_die_type (die, set_type, cu); |
72019c9c | 16461 | } |
7ca2d3a3 | 16462 | |
0971de02 TT |
16463 | /* A helper for read_common_block that creates a locexpr baton. |
16464 | SYM is the symbol which we are marking as computed. | |
16465 | COMMON_DIE is the DIE for the common block. | |
16466 | COMMON_LOC is the location expression attribute for the common | |
16467 | block itself. | |
16468 | MEMBER_LOC is the location expression attribute for the particular | |
16469 | member of the common block that we are processing. | |
16470 | CU is the CU from which the above come. */ | |
16471 | ||
16472 | static void | |
16473 | mark_common_block_symbol_computed (struct symbol *sym, | |
16474 | struct die_info *common_die, | |
16475 | struct attribute *common_loc, | |
16476 | struct attribute *member_loc, | |
16477 | struct dwarf2_cu *cu) | |
16478 | { | |
5e22e966 | 16479 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 16480 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
16481 | struct dwarf2_locexpr_baton *baton; |
16482 | gdb_byte *ptr; | |
16483 | unsigned int cu_off; | |
08feed99 | 16484 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
16485 | LONGEST offset = 0; |
16486 | ||
16487 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16488 | gdb_assert (common_loc->form_is_block ()); |
16489 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16490 | || member_loc->form_is_constant ()); |
0971de02 | 16491 | |
8d749320 | 16492 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 16493 | baton->per_objfile = per_objfile; |
0971de02 TT |
16494 | baton->per_cu = cu->per_cu; |
16495 | gdb_assert (baton->per_cu); | |
16496 | ||
16497 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16498 | ||
cd6c91b4 | 16499 | if (member_loc->form_is_constant ()) |
0971de02 | 16500 | { |
0826b30a | 16501 | offset = member_loc->constant_value (0); |
0971de02 TT |
16502 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
16503 | } | |
16504 | else | |
16505 | baton->size += DW_BLOCK (member_loc)->size; | |
16506 | ||
224c3ddb | 16507 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16508 | baton->data = ptr; |
16509 | ||
16510 | *ptr++ = DW_OP_call4; | |
9c541725 | 16511 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16512 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16513 | ptr += 4; | |
16514 | ||
cd6c91b4 | 16515 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16516 | { |
16517 | *ptr++ = DW_OP_addr; | |
16518 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16519 | ptr += cu->header.addr_size; | |
16520 | } | |
16521 | else | |
16522 | { | |
16523 | /* We have to copy the data here, because DW_OP_call4 will only | |
16524 | use a DW_AT_location attribute. */ | |
16525 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16526 | ptr += DW_BLOCK (member_loc)->size; | |
16527 | } | |
16528 | ||
16529 | *ptr++ = DW_OP_plus; | |
16530 | gdb_assert (ptr - baton->data == baton->size); | |
16531 | ||
0971de02 | 16532 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16533 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16534 | } |
16535 | ||
4357ac6c TT |
16536 | /* Create appropriate locally-scoped variables for all the |
16537 | DW_TAG_common_block entries. Also create a struct common_block | |
16538 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16539 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16540 | variable names. */ |
c906108c SS |
16541 | |
16542 | static void | |
e7c27a73 | 16543 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16544 | { |
0971de02 TT |
16545 | struct attribute *attr; |
16546 | ||
16547 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 16548 | if (attr != nullptr) |
0971de02 TT |
16549 | { |
16550 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 16551 | if (attr->form_is_block ()) |
0971de02 TT |
16552 | { |
16553 | /* Ok. */ | |
16554 | } | |
cd6c91b4 | 16555 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
16556 | { |
16557 | dwarf2_complex_location_expr_complaint (); | |
16558 | attr = NULL; | |
16559 | } | |
16560 | else | |
16561 | { | |
16562 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16563 | "common block member"); | |
16564 | attr = NULL; | |
16565 | } | |
16566 | } | |
16567 | ||
639d11d3 | 16568 | if (die->child != NULL) |
c906108c | 16569 | { |
5e22e966 | 16570 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
16571 | struct die_info *child_die; |
16572 | size_t n_entries = 0, size; | |
16573 | struct common_block *common_block; | |
16574 | struct symbol *sym; | |
74ac6d43 | 16575 | |
4357ac6c TT |
16576 | for (child_die = die->child; |
16577 | child_die && child_die->tag; | |
436c571c | 16578 | child_die = child_die->sibling) |
4357ac6c TT |
16579 | ++n_entries; |
16580 | ||
16581 | size = (sizeof (struct common_block) | |
16582 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16583 | common_block |
16584 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16585 | size); | |
4357ac6c TT |
16586 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16587 | common_block->n_entries = 0; | |
16588 | ||
16589 | for (child_die = die->child; | |
16590 | child_die && child_die->tag; | |
436c571c | 16591 | child_die = child_die->sibling) |
4357ac6c TT |
16592 | { |
16593 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16594 | symbol scope. */ | |
e7c27a73 | 16595 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16596 | if (sym != NULL) |
16597 | { | |
16598 | struct attribute *member_loc; | |
16599 | ||
16600 | common_block->contents[common_block->n_entries++] = sym; | |
16601 | ||
16602 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16603 | cu); | |
16604 | if (member_loc) | |
16605 | { | |
16606 | /* GDB has handled this for a long time, but it is | |
16607 | not specified by DWARF. It seems to have been | |
16608 | emitted by gfortran at least as recently as: | |
16609 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16610 | complaint (_("Variable in common block has " |
0971de02 | 16611 | "DW_AT_data_member_location " |
9d8780f0 SM |
16612 | "- DIE at %s [in module %s]"), |
16613 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16614 | objfile_name (objfile)); |
0971de02 | 16615 | |
cd6c91b4 | 16616 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16617 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16618 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16619 | || member_loc->form_is_block ()) |
0971de02 | 16620 | { |
435d3d88 | 16621 | if (attr != nullptr) |
0971de02 TT |
16622 | mark_common_block_symbol_computed (sym, die, attr, |
16623 | member_loc, cu); | |
16624 | } | |
16625 | else | |
16626 | dwarf2_complex_location_expr_complaint (); | |
16627 | } | |
16628 | } | |
c906108c | 16629 | } |
4357ac6c TT |
16630 | |
16631 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16632 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16633 | } |
16634 | } | |
16635 | ||
0114d602 | 16636 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16637 | |
0114d602 DJ |
16638 | static struct type * |
16639 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16640 | { |
5e22e966 | 16641 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16642 | const char *previous_prefix, *name; |
9219021c | 16643 | int is_anonymous; |
0114d602 DJ |
16644 | struct type *type; |
16645 | ||
16646 | /* For extensions, reuse the type of the original namespace. */ | |
16647 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16648 | { | |
16649 | struct die_info *ext_die; | |
16650 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16651 | |
0114d602 DJ |
16652 | ext_die = dwarf2_extension (die, &ext_cu); |
16653 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16654 | |
16655 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16656 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16657 | return set_die_type (die, type, cu); |
16658 | } | |
9219021c | 16659 | |
e142c38c | 16660 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16661 | |
16662 | /* Now build the name of the current namespace. */ | |
16663 | ||
0114d602 DJ |
16664 | previous_prefix = determine_prefix (die, cu); |
16665 | if (previous_prefix[0] != '\0') | |
16666 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16667 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16668 | |
16669 | /* Create the type. */ | |
19f392bc | 16670 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16671 | |
60531b24 | 16672 | return set_die_type (die, type, cu); |
0114d602 DJ |
16673 | } |
16674 | ||
22cee43f | 16675 | /* Read a namespace scope. */ |
0114d602 DJ |
16676 | |
16677 | static void | |
16678 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16679 | { | |
5e22e966 | 16680 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16681 | int is_anonymous; |
9219021c | 16682 | |
5c4e30ca DC |
16683 | /* Add a symbol associated to this if we haven't seen the namespace |
16684 | before. Also, add a using directive if it's an anonymous | |
16685 | namespace. */ | |
9219021c | 16686 | |
f2f0e013 | 16687 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16688 | { |
16689 | struct type *type; | |
16690 | ||
0114d602 | 16691 | type = read_type_die (die, cu); |
e7c27a73 | 16692 | new_symbol (die, type, cu); |
5c4e30ca | 16693 | |
e8e80198 | 16694 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16695 | if (is_anonymous) |
0114d602 DJ |
16696 | { |
16697 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16698 | |
eb1e02fd | 16699 | std::vector<const char *> excludes; |
804d2729 | 16700 | add_using_directive (using_directives (cu), |
7d93a1e0 | 16701 | previous_prefix, type->name (), NULL, |
eb1e02fd | 16702 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16703 | } |
5c4e30ca | 16704 | } |
9219021c | 16705 | |
639d11d3 | 16706 | if (die->child != NULL) |
d9fa45fe | 16707 | { |
639d11d3 | 16708 | struct die_info *child_die = die->child; |
6e70227d | 16709 | |
d9fa45fe DC |
16710 | while (child_die && child_die->tag) |
16711 | { | |
e7c27a73 | 16712 | process_die (child_die, cu); |
436c571c | 16713 | child_die = child_die->sibling; |
d9fa45fe DC |
16714 | } |
16715 | } | |
38d518c9 EZ |
16716 | } |
16717 | ||
f55ee35c JK |
16718 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16719 | imported module. Still we need that type as local Fortran "use ... only" | |
16720 | declaration imports depend on the created type in determine_prefix. */ | |
16721 | ||
16722 | static struct type * | |
16723 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16724 | { | |
5e22e966 | 16725 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 16726 | const char *module_name; |
f55ee35c JK |
16727 | struct type *type; |
16728 | ||
16729 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16730 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16731 | |
f55ee35c JK |
16732 | return set_die_type (die, type, cu); |
16733 | } | |
16734 | ||
5d7cb8df JK |
16735 | /* Read a Fortran module. */ |
16736 | ||
16737 | static void | |
16738 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16739 | { | |
16740 | struct die_info *child_die = die->child; | |
530e8392 KB |
16741 | struct type *type; |
16742 | ||
16743 | type = read_type_die (die, cu); | |
16744 | new_symbol (die, type, cu); | |
5d7cb8df | 16745 | |
5d7cb8df JK |
16746 | while (child_die && child_die->tag) |
16747 | { | |
16748 | process_die (child_die, cu); | |
436c571c | 16749 | child_die = child_die->sibling; |
5d7cb8df JK |
16750 | } |
16751 | } | |
16752 | ||
38d518c9 EZ |
16753 | /* Return the name of the namespace represented by DIE. Set |
16754 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16755 | namespace. */ | |
16756 | ||
16757 | static const char * | |
e142c38c | 16758 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16759 | { |
16760 | struct die_info *current_die; | |
16761 | const char *name = NULL; | |
16762 | ||
16763 | /* Loop through the extensions until we find a name. */ | |
16764 | ||
16765 | for (current_die = die; | |
16766 | current_die != NULL; | |
f2f0e013 | 16767 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16768 | { |
96553a0c DE |
16769 | /* We don't use dwarf2_name here so that we can detect the absence |
16770 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16771 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16772 | |
38d518c9 EZ |
16773 | if (name != NULL) |
16774 | break; | |
16775 | } | |
16776 | ||
16777 | /* Is it an anonymous namespace? */ | |
16778 | ||
16779 | *is_anonymous = (name == NULL); | |
16780 | if (*is_anonymous) | |
2b1dbab0 | 16781 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16782 | |
16783 | return name; | |
d9fa45fe DC |
16784 | } |
16785 | ||
c906108c SS |
16786 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16787 | the user defined type vector. */ | |
16788 | ||
f792889a | 16789 | static struct type * |
e7c27a73 | 16790 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16791 | { |
5e22e966 | 16792 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 16793 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16794 | struct type *type; |
8b2dbe47 KB |
16795 | struct attribute *attr_byte_size; |
16796 | struct attribute *attr_address_class; | |
16797 | int byte_size, addr_class; | |
7e314c57 JK |
16798 | struct type *target_type; |
16799 | ||
16800 | target_type = die_type (die, cu); | |
c906108c | 16801 | |
7e314c57 JK |
16802 | /* The die_type call above may have already set the type for this DIE. */ |
16803 | type = get_die_type (die, cu); | |
16804 | if (type) | |
16805 | return type; | |
16806 | ||
16807 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16808 | |
e142c38c | 16809 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16810 | if (attr_byte_size) |
16811 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16812 | else |
8b2dbe47 KB |
16813 | byte_size = cu_header->addr_size; |
16814 | ||
e142c38c | 16815 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16816 | if (attr_address_class) |
16817 | addr_class = DW_UNSND (attr_address_class); | |
16818 | else | |
16819 | addr_class = DW_ADDR_none; | |
16820 | ||
2b4424c3 TT |
16821 | ULONGEST alignment = get_alignment (cu, die); |
16822 | ||
16823 | /* If the pointer size, alignment, or address class is different | |
16824 | than the default, create a type variant marked as such and set | |
16825 | the length accordingly. */ | |
16826 | if (TYPE_LENGTH (type) != byte_size | |
16827 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16828 | && alignment != TYPE_RAW_ALIGN (type)) | |
16829 | || addr_class != DW_ADDR_none) | |
c906108c | 16830 | { |
5e2b427d | 16831 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16832 | { |
16833 | int type_flags; | |
16834 | ||
849957d9 | 16835 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16836 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16837 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16838 | == 0); | |
8b2dbe47 KB |
16839 | type = make_type_with_address_space (type, type_flags); |
16840 | } | |
16841 | else if (TYPE_LENGTH (type) != byte_size) | |
16842 | { | |
b98664d3 | 16843 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16844 | } |
2b4424c3 TT |
16845 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16846 | { | |
b98664d3 | 16847 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16848 | " - DIE at %s [in module %s]"), |
16849 | sect_offset_str (die->sect_off), | |
5e22e966 | 16850 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 16851 | } |
6e70227d | 16852 | else |
9a619af0 MS |
16853 | { |
16854 | /* Should we also complain about unhandled address classes? */ | |
16855 | } | |
c906108c | 16856 | } |
8b2dbe47 KB |
16857 | |
16858 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16859 | set_type_align (type, alignment); |
f792889a | 16860 | return set_die_type (die, type, cu); |
c906108c SS |
16861 | } |
16862 | ||
16863 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16864 | the user defined type vector. */ | |
16865 | ||
f792889a | 16866 | static struct type * |
e7c27a73 | 16867 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16868 | { |
16869 | struct type *type; | |
16870 | struct type *to_type; | |
16871 | struct type *domain; | |
16872 | ||
e7c27a73 DJ |
16873 | to_type = die_type (die, cu); |
16874 | domain = die_containing_type (die, cu); | |
0d5de010 | 16875 | |
7e314c57 JK |
16876 | /* The calls above may have already set the type for this DIE. */ |
16877 | type = get_die_type (die, cu); | |
16878 | if (type) | |
16879 | return type; | |
16880 | ||
78134374 | 16881 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 16882 | type = lookup_methodptr_type (to_type); |
78134374 | 16883 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 16884 | { |
5e22e966 | 16885 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
16886 | |
16887 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 16888 | to_type->fields (), to_type->num_fields (), |
7078baeb TT |
16889 | TYPE_VARARGS (to_type)); |
16890 | type = lookup_methodptr_type (new_type); | |
16891 | } | |
0d5de010 DJ |
16892 | else |
16893 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16894 | |
f792889a | 16895 | return set_die_type (die, type, cu); |
c906108c SS |
16896 | } |
16897 | ||
4297a3f0 | 16898 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16899 | the user defined type vector. */ |
16900 | ||
f792889a | 16901 | static struct type * |
4297a3f0 AV |
16902 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16903 | enum type_code refcode) | |
c906108c | 16904 | { |
e7c27a73 | 16905 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16906 | struct type *type, *target_type; |
c906108c SS |
16907 | struct attribute *attr; |
16908 | ||
4297a3f0 AV |
16909 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16910 | ||
7e314c57 JK |
16911 | target_type = die_type (die, cu); |
16912 | ||
16913 | /* The die_type call above may have already set the type for this DIE. */ | |
16914 | type = get_die_type (die, cu); | |
16915 | if (type) | |
16916 | return type; | |
16917 | ||
4297a3f0 | 16918 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16919 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16920 | if (attr != nullptr) |
c906108c SS |
16921 | { |
16922 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16923 | } | |
16924 | else | |
16925 | { | |
107d2387 | 16926 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16927 | } |
2b4424c3 | 16928 | maybe_set_alignment (cu, die, type); |
f792889a | 16929 | return set_die_type (die, type, cu); |
c906108c SS |
16930 | } |
16931 | ||
cf363f18 MW |
16932 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16933 | outputs DWARF type qualifiers that apply to an array, not the | |
16934 | element type. But GDB relies on the array element type to carry | |
16935 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16936 | specification. */ | |
16937 | ||
16938 | static struct type * | |
16939 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16940 | struct type *base_type, int cnst, int voltl) | |
16941 | { | |
16942 | struct type *el_type, *inner_array; | |
16943 | ||
16944 | base_type = copy_type (base_type); | |
16945 | inner_array = base_type; | |
16946 | ||
78134374 | 16947 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
16948 | { |
16949 | TYPE_TARGET_TYPE (inner_array) = | |
16950 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16951 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16952 | } | |
16953 | ||
16954 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16955 | cnst |= TYPE_CONST (el_type); | |
16956 | voltl |= TYPE_VOLATILE (el_type); | |
16957 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16958 | ||
16959 | return set_die_type (die, base_type, cu); | |
16960 | } | |
16961 | ||
f792889a | 16962 | static struct type * |
e7c27a73 | 16963 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16964 | { |
f792889a | 16965 | struct type *base_type, *cv_type; |
c906108c | 16966 | |
e7c27a73 | 16967 | base_type = die_type (die, cu); |
7e314c57 JK |
16968 | |
16969 | /* The die_type call above may have already set the type for this DIE. */ | |
16970 | cv_type = get_die_type (die, cu); | |
16971 | if (cv_type) | |
16972 | return cv_type; | |
16973 | ||
2f608a3a KW |
16974 | /* In case the const qualifier is applied to an array type, the element type |
16975 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 16976 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 16977 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16978 | |
f792889a DJ |
16979 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16980 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16981 | } |
16982 | ||
f792889a | 16983 | static struct type * |
e7c27a73 | 16984 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16985 | { |
f792889a | 16986 | struct type *base_type, *cv_type; |
c906108c | 16987 | |
e7c27a73 | 16988 | base_type = die_type (die, cu); |
7e314c57 JK |
16989 | |
16990 | /* The die_type call above may have already set the type for this DIE. */ | |
16991 | cv_type = get_die_type (die, cu); | |
16992 | if (cv_type) | |
16993 | return cv_type; | |
16994 | ||
cf363f18 MW |
16995 | /* In case the volatile qualifier is applied to an array type, the |
16996 | element type is so qualified, not the array type (section 6.7.3 | |
16997 | of C99). */ | |
78134374 | 16998 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
16999 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17000 | ||
f792889a DJ |
17001 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17002 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17003 | } |
17004 | ||
06d66ee9 TT |
17005 | /* Handle DW_TAG_restrict_type. */ |
17006 | ||
17007 | static struct type * | |
17008 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17009 | { | |
17010 | struct type *base_type, *cv_type; | |
17011 | ||
17012 | base_type = die_type (die, cu); | |
17013 | ||
17014 | /* The die_type call above may have already set the type for this DIE. */ | |
17015 | cv_type = get_die_type (die, cu); | |
17016 | if (cv_type) | |
17017 | return cv_type; | |
17018 | ||
17019 | cv_type = make_restrict_type (base_type); | |
17020 | return set_die_type (die, cv_type, cu); | |
17021 | } | |
17022 | ||
a2c2acaf MW |
17023 | /* Handle DW_TAG_atomic_type. */ |
17024 | ||
17025 | static struct type * | |
17026 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17027 | { | |
17028 | struct type *base_type, *cv_type; | |
17029 | ||
17030 | base_type = die_type (die, cu); | |
17031 | ||
17032 | /* The die_type call above may have already set the type for this DIE. */ | |
17033 | cv_type = get_die_type (die, cu); | |
17034 | if (cv_type) | |
17035 | return cv_type; | |
17036 | ||
17037 | cv_type = make_atomic_type (base_type); | |
17038 | return set_die_type (die, cv_type, cu); | |
17039 | } | |
17040 | ||
c906108c SS |
17041 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17042 | the user defined type vector. It isn't really a user defined type, | |
17043 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17044 | attribute to reference it. */ | |
17045 | ||
f792889a | 17046 | static struct type * |
e7c27a73 | 17047 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17048 | { |
5e22e966 | 17049 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17050 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17051 | struct type *type, *range_type, *index_type, *char_type; |
17052 | struct attribute *attr; | |
216a7e6b AB |
17053 | struct dynamic_prop prop; |
17054 | bool length_is_constant = true; | |
17055 | LONGEST length; | |
17056 | ||
17057 | /* There are a couple of places where bit sizes might be made use of | |
17058 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17059 | of make use of these. Handling bit sizes that are a multiple of the | |
17060 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17061 | with that problem when we have to. Warn about these attributes being | |
17062 | unsupported, then parse the type and ignore them like we always | |
17063 | have. */ | |
17064 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17065 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17066 | { | |
17067 | static bool warning_printed = false; | |
17068 | if (!warning_printed) | |
17069 | { | |
17070 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17071 | "currently supported on DW_TAG_string_type.")); | |
17072 | warning_printed = true; | |
17073 | } | |
17074 | } | |
c906108c | 17075 | |
e142c38c | 17076 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17077 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17078 | { |
17079 | /* The string length describes the location at which the length of | |
17080 | the string can be found. The size of the length field can be | |
17081 | specified with one of the attributes below. */ | |
17082 | struct type *prop_type; | |
17083 | struct attribute *len | |
17084 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17085 | if (len == nullptr) | |
17086 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17087 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17088 | { |
17089 | /* Pass 0 as the default as we know this attribute is constant | |
17090 | and the default value will not be returned. */ | |
0826b30a | 17091 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17092 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17093 | } |
17094 | else | |
17095 | { | |
17096 | /* If the size is not specified then we assume it is the size of | |
17097 | an address on this target. */ | |
293e7e51 | 17098 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17099 | } |
17100 | ||
17101 | /* Convert the attribute into a dynamic property. */ | |
17102 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17103 | length = 1; | |
17104 | else | |
17105 | length_is_constant = false; | |
17106 | } | |
17107 | else if (attr != nullptr) | |
17108 | { | |
17109 | /* This DW_AT_string_length just contains the length with no | |
17110 | indirection. There's no need to create a dynamic property in this | |
17111 | case. Pass 0 for the default value as we know it will not be | |
17112 | returned in this case. */ | |
0826b30a | 17113 | length = attr->constant_value (0); |
216a7e6b AB |
17114 | } |
17115 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17116 | { |
216a7e6b | 17117 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17118 | length = attr->constant_value (1); |
c906108c SS |
17119 | } |
17120 | else | |
17121 | { | |
216a7e6b AB |
17122 | /* Use 1 as a fallback length if we have nothing else. */ |
17123 | length = 1; | |
c906108c | 17124 | } |
6ccb9162 | 17125 | |
46bf5051 | 17126 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17127 | if (length_is_constant) |
17128 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17129 | else | |
17130 | { | |
17131 | struct dynamic_prop low_bound; | |
17132 | ||
17133 | low_bound.kind = PROP_CONST; | |
17134 | low_bound.data.const_val = 1; | |
17135 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
17136 | } | |
3b7538c0 UW |
17137 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17138 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17139 | |
f792889a | 17140 | return set_die_type (die, type, cu); |
c906108c SS |
17141 | } |
17142 | ||
4d804846 JB |
17143 | /* Assuming that DIE corresponds to a function, returns nonzero |
17144 | if the function is prototyped. */ | |
17145 | ||
17146 | static int | |
17147 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17148 | { | |
17149 | struct attribute *attr; | |
17150 | ||
17151 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17152 | if (attr && (DW_UNSND (attr) != 0)) | |
17153 | return 1; | |
17154 | ||
17155 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17156 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17157 | languages that allow unprototyped functions (Eg: Objective C). |
17158 | For all other languages, assume that functions are always | |
17159 | prototyped. */ | |
17160 | if (cu->language != language_c | |
17161 | && cu->language != language_objc | |
17162 | && cu->language != language_opencl) | |
17163 | return 1; | |
17164 | ||
17165 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17166 | prototyped and unprototyped functions; default to prototyped, | |
17167 | since that is more common in modern code (and RealView warns | |
17168 | about unprototyped functions). */ | |
17169 | if (producer_is_realview (cu->producer)) | |
17170 | return 1; | |
17171 | ||
17172 | return 0; | |
17173 | } | |
17174 | ||
c906108c SS |
17175 | /* Handle DIES due to C code like: |
17176 | ||
17177 | struct foo | |
c5aa993b JM |
17178 | { |
17179 | int (*funcp)(int a, long l); | |
17180 | int b; | |
17181 | }; | |
c906108c | 17182 | |
0963b4bd | 17183 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17184 | |
f792889a | 17185 | static struct type * |
e7c27a73 | 17186 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17187 | { |
5e22e966 | 17188 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17189 | struct type *type; /* Type that this function returns. */ |
17190 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17191 | struct attribute *attr; |
17192 | ||
e7c27a73 | 17193 | type = die_type (die, cu); |
7e314c57 JK |
17194 | |
17195 | /* The die_type call above may have already set the type for this DIE. */ | |
17196 | ftype = get_die_type (die, cu); | |
17197 | if (ftype) | |
17198 | return ftype; | |
17199 | ||
0c8b41f1 | 17200 | ftype = lookup_function_type (type); |
c906108c | 17201 | |
4d804846 | 17202 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17203 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17204 | |
c055b101 CV |
17205 | /* Store the calling convention in the type if it's available in |
17206 | the subroutine die. Otherwise set the calling convention to | |
17207 | the default value DW_CC_normal. */ | |
17208 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17209 | if (attr != nullptr |
17210 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17211 | TYPE_CALLING_CONVENTION (ftype) | |
17212 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17213 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17214 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17215 | else | |
17216 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17217 | |
743649fd MW |
17218 | /* Record whether the function returns normally to its caller or not |
17219 | if the DWARF producer set that information. */ | |
17220 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17221 | if (attr && (DW_UNSND (attr) != 0)) | |
17222 | TYPE_NO_RETURN (ftype) = 1; | |
17223 | ||
76c10ea2 GM |
17224 | /* We need to add the subroutine type to the die immediately so |
17225 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17226 | declared as the same subroutine type. */ |
76c10ea2 | 17227 | set_die_type (die, ftype, cu); |
6e70227d | 17228 | |
639d11d3 | 17229 | if (die->child != NULL) |
c906108c | 17230 | { |
bb5ed363 | 17231 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17232 | struct die_info *child_die; |
8072405b | 17233 | int nparams, iparams; |
c906108c SS |
17234 | |
17235 | /* Count the number of parameters. | |
17236 | FIXME: GDB currently ignores vararg functions, but knows about | |
17237 | vararg member functions. */ | |
8072405b | 17238 | nparams = 0; |
639d11d3 | 17239 | child_die = die->child; |
c906108c SS |
17240 | while (child_die && child_die->tag) |
17241 | { | |
17242 | if (child_die->tag == DW_TAG_formal_parameter) | |
17243 | nparams++; | |
17244 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17245 | TYPE_VARARGS (ftype) = 1; |
436c571c | 17246 | child_die = child_die->sibling; |
c906108c SS |
17247 | } |
17248 | ||
17249 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17250 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17251 | ftype->set_fields |
17252 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17253 | |
8072405b JK |
17254 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17255 | even if we error out during the parameters reading below. */ | |
17256 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 17257 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
17258 | |
17259 | iparams = 0; | |
639d11d3 | 17260 | child_die = die->child; |
c906108c SS |
17261 | while (child_die && child_die->tag) |
17262 | { | |
17263 | if (child_die->tag == DW_TAG_formal_parameter) | |
17264 | { | |
3ce3b1ba PA |
17265 | struct type *arg_type; |
17266 | ||
17267 | /* DWARF version 2 has no clean way to discern C++ | |
17268 | static and non-static member functions. G++ helps | |
17269 | GDB by marking the first parameter for non-static | |
17270 | member functions (which is the this pointer) as | |
17271 | artificial. We pass this information to | |
17272 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17273 | ||
17274 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17275 | 4.5 does not yet generate. */ | |
e142c38c | 17276 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17277 | if (attr != nullptr) |
c906108c SS |
17278 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17279 | else | |
9c37b5ae | 17280 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17281 | arg_type = die_type (child_die, cu); |
17282 | ||
17283 | /* RealView does not mark THIS as const, which the testsuite | |
17284 | expects. GCC marks THIS as const in method definitions, | |
17285 | but not in the class specifications (GCC PR 43053). */ | |
17286 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17287 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17288 | { | |
17289 | int is_this = 0; | |
17290 | struct dwarf2_cu *arg_cu = cu; | |
17291 | const char *name = dwarf2_name (child_die, cu); | |
17292 | ||
17293 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17294 | if (attr != nullptr) |
3ce3b1ba PA |
17295 | { |
17296 | /* If the compiler emits this, use it. */ | |
17297 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17298 | is_this = 1; | |
17299 | } | |
17300 | else if (name && strcmp (name, "this") == 0) | |
17301 | /* Function definitions will have the argument names. */ | |
17302 | is_this = 1; | |
17303 | else if (name == NULL && iparams == 0) | |
17304 | /* Declarations may not have the names, so like | |
17305 | elsewhere in GDB, assume an artificial first | |
17306 | argument is "this". */ | |
17307 | is_this = 1; | |
17308 | ||
17309 | if (is_this) | |
17310 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17311 | arg_type, 0); | |
17312 | } | |
17313 | ||
5d14b6e5 | 17314 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
17315 | iparams++; |
17316 | } | |
436c571c | 17317 | child_die = child_die->sibling; |
c906108c SS |
17318 | } |
17319 | } | |
17320 | ||
76c10ea2 | 17321 | return ftype; |
c906108c SS |
17322 | } |
17323 | ||
f792889a | 17324 | static struct type * |
e7c27a73 | 17325 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17326 | { |
5e22e966 | 17327 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17328 | const char *name = NULL; |
3c8e0968 | 17329 | struct type *this_type, *target_type; |
c906108c | 17330 | |
94af9270 | 17331 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17332 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17333 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17334 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17335 | target_type = die_type (die, cu); |
17336 | if (target_type != this_type) | |
17337 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17338 | else | |
17339 | { | |
17340 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17341 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17342 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17343 | "- DIE at %s [in module %s]"), |
17344 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17345 | TYPE_TARGET_TYPE (this_type) = NULL; |
17346 | } | |
e4003a34 TV |
17347 | if (name == NULL) |
17348 | { | |
17349 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17350 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17351 | Handle these by just returning the target type, rather than | |
17352 | constructing an anonymous typedef type and trying to handle this | |
17353 | elsewhere. */ | |
17354 | set_die_type (die, target_type, cu); | |
17355 | return target_type; | |
17356 | } | |
f792889a | 17357 | return this_type; |
c906108c SS |
17358 | } |
17359 | ||
9b790ce7 UW |
17360 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17361 | (which may be different from NAME) to the architecture back-end to allow | |
17362 | it to guess the correct format if necessary. */ | |
17363 | ||
17364 | static struct type * | |
17365 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17366 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 17367 | { |
08feed99 | 17368 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
17369 | const struct floatformat **format; |
17370 | struct type *type; | |
17371 | ||
17372 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17373 | if (format) | |
103a685e | 17374 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17375 | else |
77b7c781 | 17376 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17377 | |
17378 | return type; | |
17379 | } | |
17380 | ||
eb77c9df AB |
17381 | /* Allocate an integer type of size BITS and name NAME. */ |
17382 | ||
17383 | static struct type * | |
17384 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17385 | int bits, int unsigned_p, const char *name) | |
17386 | { | |
17387 | struct type *type; | |
17388 | ||
17389 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17390 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17391 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17392 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17393 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17394 | type = objfile_type (objfile)->builtin_void; |
17395 | else | |
17396 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17397 | ||
17398 | return type; | |
17399 | } | |
17400 | ||
8bdc1658 AB |
17401 | /* Initialise and return a floating point type of size BITS suitable for |
17402 | use as a component of a complex number. The NAME_HINT is passed through | |
17403 | when initialising the floating point type and is the name of the complex | |
17404 | type. | |
17405 | ||
17406 | As DWARF doesn't currently provide an explicit name for the components | |
17407 | of a complex number, but it can be helpful to have these components | |
17408 | named, we try to select a suitable name based on the size of the | |
17409 | component. */ | |
17410 | static struct type * | |
17411 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17412 | struct objfile *objfile, | |
103a685e TT |
17413 | int bits, const char *name_hint, |
17414 | enum bfd_endian byte_order) | |
8bdc1658 | 17415 | { |
08feed99 | 17416 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
17417 | struct type *tt = nullptr; |
17418 | ||
35add35e AB |
17419 | /* Try to find a suitable floating point builtin type of size BITS. |
17420 | We're going to use the name of this type as the name for the complex | |
17421 | target type that we are about to create. */ | |
1db455a7 | 17422 | switch (cu->language) |
8bdc1658 | 17423 | { |
1db455a7 AB |
17424 | case language_fortran: |
17425 | switch (bits) | |
17426 | { | |
17427 | case 32: | |
17428 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17429 | break; | |
17430 | case 64: | |
17431 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17432 | break; | |
17433 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17434 | case 128: | |
17435 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17436 | break; | |
17437 | } | |
8bdc1658 | 17438 | break; |
1db455a7 AB |
17439 | default: |
17440 | switch (bits) | |
17441 | { | |
17442 | case 32: | |
17443 | tt = builtin_type (gdbarch)->builtin_float; | |
17444 | break; | |
17445 | case 64: | |
17446 | tt = builtin_type (gdbarch)->builtin_double; | |
17447 | break; | |
17448 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17449 | case 128: | |
17450 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17451 | break; | |
17452 | } | |
8bdc1658 AB |
17453 | break; |
17454 | } | |
17455 | ||
35add35e AB |
17456 | /* If the type we found doesn't match the size we were looking for, then |
17457 | pretend we didn't find a type at all, the complex target type we | |
17458 | create will then be nameless. */ | |
a12e5744 | 17459 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17460 | tt = nullptr; |
17461 | ||
7d93a1e0 | 17462 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 17463 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17464 | } |
17465 | ||
c906108c SS |
17466 | /* Find a representation of a given base type and install |
17467 | it in the TYPE field of the die. */ | |
17468 | ||
f792889a | 17469 | static struct type * |
e7c27a73 | 17470 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17471 | { |
5e22e966 | 17472 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
17473 | struct type *type; |
17474 | struct attribute *attr; | |
19f392bc | 17475 | int encoding = 0, bits = 0; |
15d034d0 | 17476 | const char *name; |
34877895 | 17477 | gdbarch *arch; |
c906108c | 17478 | |
e142c38c | 17479 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17480 | if (attr != nullptr) |
34877895 | 17481 | encoding = DW_UNSND (attr); |
e142c38c | 17482 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17483 | if (attr != nullptr) |
34877895 | 17484 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17485 | name = dwarf2_name (die, cu); |
6ccb9162 | 17486 | if (!name) |
34877895 | 17487 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 17488 | |
08feed99 | 17489 | arch = objfile->arch (); |
103a685e TT |
17490 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
17491 | ||
34877895 PJ |
17492 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17493 | if (attr) | |
103a685e TT |
17494 | { |
17495 | int endianity = DW_UNSND (attr); | |
17496 | ||
17497 | switch (endianity) | |
17498 | { | |
17499 | case DW_END_big: | |
17500 | byte_order = BFD_ENDIAN_BIG; | |
17501 | break; | |
17502 | case DW_END_little: | |
17503 | byte_order = BFD_ENDIAN_LITTLE; | |
17504 | break; | |
17505 | default: | |
17506 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17507 | break; | |
17508 | } | |
17509 | } | |
6ccb9162 UW |
17510 | |
17511 | switch (encoding) | |
c906108c | 17512 | { |
6ccb9162 UW |
17513 | case DW_ATE_address: |
17514 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17515 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17516 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17517 | break; |
17518 | case DW_ATE_boolean: | |
19f392bc | 17519 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17520 | break; |
17521 | case DW_ATE_complex_float: | |
103a685e TT |
17522 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17523 | byte_order); | |
78134374 | 17524 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
17525 | { |
17526 | if (name == nullptr) | |
17527 | { | |
17528 | struct obstack *obstack | |
5e22e966 | 17529 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 17530 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
17531 | nullptr); |
17532 | } | |
17533 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
17534 | } | |
17535 | else | |
17536 | type = init_complex_type (name, type); | |
6ccb9162 UW |
17537 | break; |
17538 | case DW_ATE_decimal_float: | |
19f392bc | 17539 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17540 | break; |
17541 | case DW_ATE_float: | |
103a685e | 17542 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
17543 | break; |
17544 | case DW_ATE_signed: | |
eb77c9df | 17545 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17546 | break; |
17547 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17548 | if (cu->language == language_fortran |
17549 | && name | |
61012eef | 17550 | && startswith (name, "character(")) |
19f392bc UW |
17551 | type = init_character_type (objfile, bits, 1, name); |
17552 | else | |
eb77c9df | 17553 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17554 | break; |
17555 | case DW_ATE_signed_char: | |
6e70227d | 17556 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17557 | || cu->language == language_pascal |
17558 | || cu->language == language_fortran) | |
19f392bc UW |
17559 | type = init_character_type (objfile, bits, 0, name); |
17560 | else | |
eb77c9df | 17561 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17562 | break; |
17563 | case DW_ATE_unsigned_char: | |
868a0084 | 17564 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17565 | || cu->language == language_pascal |
c44af4eb TT |
17566 | || cu->language == language_fortran |
17567 | || cu->language == language_rust) | |
19f392bc UW |
17568 | type = init_character_type (objfile, bits, 1, name); |
17569 | else | |
eb77c9df | 17570 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17571 | break; |
75079b2b | 17572 | case DW_ATE_UTF: |
53e710ac | 17573 | { |
53e710ac PA |
17574 | if (bits == 16) |
17575 | type = builtin_type (arch)->builtin_char16; | |
17576 | else if (bits == 32) | |
17577 | type = builtin_type (arch)->builtin_char32; | |
17578 | else | |
17579 | { | |
b98664d3 | 17580 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17581 | bits); |
eb77c9df | 17582 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17583 | } |
17584 | return set_die_type (die, type, cu); | |
17585 | } | |
75079b2b TT |
17586 | break; |
17587 | ||
6ccb9162 | 17588 | default: |
b98664d3 | 17589 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17590 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17591 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17592 | break; |
c906108c | 17593 | } |
6ccb9162 | 17594 | |
0114d602 | 17595 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17596 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17597 | |
2b4424c3 TT |
17598 | maybe_set_alignment (cu, die, type); |
17599 | ||
103a685e | 17600 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17601 | |
f792889a | 17602 | return set_die_type (die, type, cu); |
c906108c SS |
17603 | } |
17604 | ||
80180f79 SA |
17605 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17606 | resulting value of the attribute into struct bound_prop. | |
17607 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17608 | ||
17609 | static int | |
17610 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17611 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17612 | struct type *default_type) | |
80180f79 SA |
17613 | { |
17614 | struct dwarf2_property_baton *baton; | |
5e22e966 | 17615 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
17616 | struct objfile *objfile = per_objfile->objfile; |
17617 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 17618 | |
9a49df9d AB |
17619 | gdb_assert (default_type != NULL); |
17620 | ||
80180f79 SA |
17621 | if (attr == NULL || prop == NULL) |
17622 | return 0; | |
17623 | ||
4fc6c0d5 | 17624 | if (attr->form_is_block ()) |
80180f79 | 17625 | { |
8d749320 | 17626 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17627 | baton->property_type = default_type; |
80180f79 | 17628 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17629 | baton->locexpr.per_objfile = per_objfile; |
80180f79 SA |
17630 | baton->locexpr.size = DW_BLOCK (attr)->size; |
17631 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17632 | switch (attr->name) |
17633 | { | |
17634 | case DW_AT_string_length: | |
17635 | baton->locexpr.is_reference = true; | |
17636 | break; | |
17637 | default: | |
17638 | baton->locexpr.is_reference = false; | |
17639 | break; | |
17640 | } | |
80180f79 SA |
17641 | prop->data.baton = baton; |
17642 | prop->kind = PROP_LOCEXPR; | |
17643 | gdb_assert (prop->data.baton != NULL); | |
17644 | } | |
cd6c91b4 | 17645 | else if (attr->form_is_ref ()) |
80180f79 SA |
17646 | { |
17647 | struct dwarf2_cu *target_cu = cu; | |
17648 | struct die_info *target_die; | |
17649 | struct attribute *target_attr; | |
17650 | ||
17651 | target_die = follow_die_ref (die, attr, &target_cu); | |
17652 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17653 | if (target_attr == NULL) |
17654 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17655 | target_cu); | |
80180f79 SA |
17656 | if (target_attr == NULL) |
17657 | return 0; | |
17658 | ||
df25ebbd | 17659 | switch (target_attr->name) |
80180f79 | 17660 | { |
df25ebbd | 17661 | case DW_AT_location: |
cd6c91b4 | 17662 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17663 | { |
8d749320 | 17664 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17665 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17666 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17667 | prop->data.baton = baton; | |
17668 | prop->kind = PROP_LOCLIST; | |
17669 | gdb_assert (prop->data.baton != NULL); | |
17670 | } | |
4fc6c0d5 | 17671 | else if (target_attr->form_is_block ()) |
df25ebbd | 17672 | { |
8d749320 | 17673 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17674 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 17675 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17676 | baton->locexpr.per_objfile = per_objfile; |
df25ebbd JB |
17677 | baton->locexpr.size = DW_BLOCK (target_attr)->size; |
17678 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17679 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17680 | prop->data.baton = baton; |
17681 | prop->kind = PROP_LOCEXPR; | |
17682 | gdb_assert (prop->data.baton != NULL); | |
17683 | } | |
17684 | else | |
17685 | { | |
17686 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17687 | "dynamic property"); | |
17688 | return 0; | |
17689 | } | |
17690 | break; | |
17691 | case DW_AT_data_member_location: | |
17692 | { | |
17693 | LONGEST offset; | |
17694 | ||
17695 | if (!handle_data_member_location (target_die, target_cu, | |
17696 | &offset)) | |
17697 | return 0; | |
17698 | ||
8d749320 | 17699 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17700 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17701 | target_cu); |
df25ebbd JB |
17702 | baton->offset_info.offset = offset; |
17703 | baton->offset_info.type = die_type (target_die, target_cu); | |
17704 | prop->data.baton = baton; | |
17705 | prop->kind = PROP_ADDR_OFFSET; | |
17706 | break; | |
17707 | } | |
80180f79 SA |
17708 | } |
17709 | } | |
cd6c91b4 | 17710 | else if (attr->form_is_constant ()) |
80180f79 | 17711 | { |
0826b30a | 17712 | prop->data.const_val = attr->constant_value (0); |
80180f79 SA |
17713 | prop->kind = PROP_CONST; |
17714 | } | |
17715 | else | |
17716 | { | |
17717 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17718 | dwarf2_name (die, cu)); | |
17719 | return 0; | |
17720 | } | |
17721 | ||
17722 | return 1; | |
17723 | } | |
17724 | ||
09ba997f | 17725 | /* See read.h. */ |
9a49df9d | 17726 | |
09ba997f | 17727 | struct type * |
293e7e51 | 17728 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 17729 | { |
9a49df9d AB |
17730 | struct type *int_type; |
17731 | ||
17732 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17733 | #define TRY_TYPE(F) \ |
17734 | int_type = (unsigned_p \ | |
17735 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17736 | : objfile_type (objfile)->builtin_ ## F); \ | |
17737 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17738 | return int_type |
17739 | ||
17740 | TRY_TYPE (char); | |
17741 | TRY_TYPE (short); | |
17742 | TRY_TYPE (int); | |
17743 | TRY_TYPE (long); | |
17744 | TRY_TYPE (long_long); | |
17745 | ||
17746 | #undef TRY_TYPE | |
17747 | ||
17748 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17749 | } | |
17750 | ||
09ba997f | 17751 | /* See read.h. */ |
11a8b164 | 17752 | |
09ba997f | 17753 | struct type * |
293e7e51 | 17754 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 17755 | { |
293e7e51 SM |
17756 | int addr_size = this->per_cu->addr_size (); |
17757 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
17758 | } |
17759 | ||
b86352cf AB |
17760 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17761 | present (which is valid) then compute the default type based on the | |
17762 | compilation units address size. */ | |
17763 | ||
17764 | static struct type * | |
17765 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17766 | { | |
17767 | struct type *index_type = die_type (die, cu); | |
17768 | ||
17769 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17770 | without specifying a base type. | |
17771 | In that case, the base type must be set to the type of | |
17772 | the lower bound, upper bound or count, in that order, if any of these | |
17773 | three attributes references an object that has a type. | |
17774 | If no base type is found, the Dwarf-2 specifications say that | |
17775 | a signed integer type of size equal to the size of an address should | |
17776 | be used. | |
17777 | For the following C code: `extern char gdb_int [];' | |
17778 | GCC produces an empty range DIE. | |
17779 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17780 | high bound or count are not yet handled by this code. */ | |
78134374 | 17781 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 17782 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
17783 | |
17784 | return index_type; | |
17785 | } | |
17786 | ||
a02abb62 JB |
17787 | /* Read the given DW_AT_subrange DIE. */ |
17788 | ||
f792889a | 17789 | static struct type * |
a02abb62 JB |
17790 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17791 | { | |
4c9ad8c2 | 17792 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17793 | struct type *range_type; |
17794 | struct attribute *attr; | |
729efb13 | 17795 | struct dynamic_prop low, high; |
4fae6e18 | 17796 | int low_default_is_valid; |
c451ebe5 | 17797 | int high_bound_is_count = 0; |
15d034d0 | 17798 | const char *name; |
d359392f | 17799 | ULONGEST negative_mask; |
e77813c8 | 17800 | |
b86352cf AB |
17801 | orig_base_type = read_subrange_index_type (die, cu); |
17802 | ||
4c9ad8c2 TT |
17803 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17804 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17805 | creating the range type, but we use the result of check_typedef | |
17806 | when examining properties of the type. */ | |
17807 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17808 | |
7e314c57 JK |
17809 | /* The die_type call above may have already set the type for this DIE. */ |
17810 | range_type = get_die_type (die, cu); | |
17811 | if (range_type) | |
17812 | return range_type; | |
17813 | ||
729efb13 SA |
17814 | low.kind = PROP_CONST; |
17815 | high.kind = PROP_CONST; | |
17816 | high.data.const_val = 0; | |
17817 | ||
4fae6e18 JK |
17818 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17819 | omitting DW_AT_lower_bound. */ | |
17820 | switch (cu->language) | |
6e70227d | 17821 | { |
4fae6e18 JK |
17822 | case language_c: |
17823 | case language_cplus: | |
729efb13 | 17824 | low.data.const_val = 0; |
4fae6e18 JK |
17825 | low_default_is_valid = 1; |
17826 | break; | |
17827 | case language_fortran: | |
729efb13 | 17828 | low.data.const_val = 1; |
4fae6e18 JK |
17829 | low_default_is_valid = 1; |
17830 | break; | |
17831 | case language_d: | |
4fae6e18 | 17832 | case language_objc: |
c44af4eb | 17833 | case language_rust: |
729efb13 | 17834 | low.data.const_val = 0; |
4fae6e18 JK |
17835 | low_default_is_valid = (cu->header.version >= 4); |
17836 | break; | |
17837 | case language_ada: | |
17838 | case language_m2: | |
17839 | case language_pascal: | |
729efb13 | 17840 | low.data.const_val = 1; |
4fae6e18 JK |
17841 | low_default_is_valid = (cu->header.version >= 4); |
17842 | break; | |
17843 | default: | |
729efb13 | 17844 | low.data.const_val = 0; |
4fae6e18 JK |
17845 | low_default_is_valid = 0; |
17846 | break; | |
a02abb62 JB |
17847 | } |
17848 | ||
e142c38c | 17849 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17850 | if (attr != nullptr) |
9a49df9d | 17851 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17852 | else if (!low_default_is_valid) |
b98664d3 | 17853 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17854 | "- DIE at %s [in module %s]"), |
17855 | sect_offset_str (die->sect_off), | |
5e22e966 | 17856 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 17857 | |
506f5c41 TV |
17858 | struct attribute *attr_ub, *attr_count; |
17859 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17860 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17861 | { |
506f5c41 | 17862 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17863 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17864 | { |
c451ebe5 SA |
17865 | /* If bounds are constant do the final calculation here. */ |
17866 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17867 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17868 | else | |
17869 | high_bound_is_count = 1; | |
c2ff108b | 17870 | } |
506f5c41 TV |
17871 | else |
17872 | { | |
17873 | if (attr_ub != NULL) | |
17874 | complaint (_("Unresolved DW_AT_upper_bound " | |
17875 | "- DIE at %s [in module %s]"), | |
17876 | sect_offset_str (die->sect_off), | |
5e22e966 | 17877 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
17878 | if (attr_count != NULL) |
17879 | complaint (_("Unresolved DW_AT_count " | |
17880 | "- DIE at %s [in module %s]"), | |
17881 | sect_offset_str (die->sect_off), | |
5e22e966 | 17882 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 17883 | } |
e77813c8 | 17884 | } |
a02abb62 | 17885 | |
4e962e74 TT |
17886 | LONGEST bias = 0; |
17887 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17888 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 17889 | bias = bias_attr->constant_value (0); |
4e962e74 | 17890 | |
dbb9c2b1 JB |
17891 | /* Normally, the DWARF producers are expected to use a signed |
17892 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17893 | But this is unfortunately not always the case, as witnessed | |
17894 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17895 | is used instead. To work around that ambiguity, we treat | |
17896 | the bounds as signed, and thus sign-extend their values, when | |
17897 | the base type is signed. */ | |
6e70227d | 17898 | negative_mask = |
d359392f | 17899 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17900 | if (low.kind == PROP_CONST |
17901 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17902 | low.data.const_val |= negative_mask; | |
17903 | if (high.kind == PROP_CONST | |
17904 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17905 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17906 | |
5bbd8269 AB |
17907 | /* Check for bit and byte strides. */ |
17908 | struct dynamic_prop byte_stride_prop; | |
17909 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17910 | if (attr_byte_stride != nullptr) | |
17911 | { | |
293e7e51 | 17912 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
17913 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
17914 | prop_type); | |
17915 | } | |
17916 | ||
17917 | struct dynamic_prop bit_stride_prop; | |
17918 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17919 | if (attr_bit_stride != nullptr) | |
17920 | { | |
17921 | /* It only makes sense to have either a bit or byte stride. */ | |
17922 | if (attr_byte_stride != nullptr) | |
17923 | { | |
17924 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17925 | "- DIE at %s [in module %s]"), | |
17926 | sect_offset_str (die->sect_off), | |
5e22e966 | 17927 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
17928 | attr_bit_stride = nullptr; |
17929 | } | |
17930 | else | |
17931 | { | |
293e7e51 | 17932 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
17933 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
17934 | prop_type); | |
17935 | } | |
17936 | } | |
17937 | ||
17938 | if (attr_byte_stride != nullptr | |
17939 | || attr_bit_stride != nullptr) | |
17940 | { | |
17941 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17942 | struct dynamic_prop *stride | |
17943 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17944 | ||
17945 | range_type | |
17946 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17947 | &high, bias, stride, byte_stride_p); | |
17948 | } | |
17949 | else | |
17950 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17951 | |
c451ebe5 SA |
17952 | if (high_bound_is_count) |
17953 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17954 | ||
c2ff108b JK |
17955 | /* Ada expects an empty array on no boundary attributes. */ |
17956 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17957 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17958 | |
39cbfefa DJ |
17959 | name = dwarf2_name (die, cu); |
17960 | if (name) | |
d0e39ea2 | 17961 | range_type->set_name (name); |
6e70227d | 17962 | |
e142c38c | 17963 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17964 | if (attr != nullptr) |
a02abb62 JB |
17965 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17966 | ||
2b4424c3 TT |
17967 | maybe_set_alignment (cu, die, range_type); |
17968 | ||
7e314c57 JK |
17969 | set_die_type (die, range_type, cu); |
17970 | ||
17971 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17972 | set_descriptive_type (range_type, die, cu); |
17973 | ||
7e314c57 | 17974 | return range_type; |
a02abb62 | 17975 | } |
6e70227d | 17976 | |
f792889a | 17977 | static struct type * |
81a17f79 JB |
17978 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17979 | { | |
17980 | struct type *type; | |
81a17f79 | 17981 | |
5e22e966 | 17982 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 17983 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 17984 | |
74a2f8ff | 17985 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17986 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17987 | such a type, we treat it as a stub, and try to resolve it later on, |
17988 | when needed. */ | |
17989 | if (cu->language == language_ada) | |
17990 | TYPE_STUB (type) = 1; | |
17991 | ||
f792889a | 17992 | return set_die_type (die, type, cu); |
81a17f79 | 17993 | } |
a02abb62 | 17994 | |
639d11d3 DC |
17995 | /* Read a single die and all its descendents. Set the die's sibling |
17996 | field to NULL; set other fields in the die correctly, and set all | |
17997 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17998 | location of the info_ptr after reading all of those dies. PARENT | |
17999 | is the parent of the die in question. */ | |
18000 | ||
18001 | static struct die_info * | |
dee91e82 | 18002 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18003 | const gdb_byte *info_ptr, |
18004 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18005 | struct die_info *parent) |
639d11d3 DC |
18006 | { |
18007 | struct die_info *die; | |
d521ce57 | 18008 | const gdb_byte *cur_ptr; |
639d11d3 | 18009 | |
3e225074 | 18010 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
18011 | if (die == NULL) |
18012 | { | |
18013 | *new_info_ptr = cur_ptr; | |
18014 | return NULL; | |
18015 | } | |
93311388 | 18016 | store_in_ref_table (die, reader->cu); |
639d11d3 | 18017 | |
3e225074 | 18018 | if (die->has_children) |
bf6af496 | 18019 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18020 | else |
18021 | { | |
18022 | die->child = NULL; | |
18023 | *new_info_ptr = cur_ptr; | |
18024 | } | |
18025 | ||
18026 | die->sibling = NULL; | |
18027 | die->parent = parent; | |
18028 | return die; | |
18029 | } | |
18030 | ||
18031 | /* Read a die, all of its descendents, and all of its siblings; set | |
18032 | all of the fields of all of the dies correctly. Arguments are as | |
18033 | in read_die_and_children. */ | |
18034 | ||
18035 | static struct die_info * | |
bf6af496 | 18036 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18037 | const gdb_byte *info_ptr, |
18038 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18039 | struct die_info *parent) |
639d11d3 DC |
18040 | { |
18041 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18042 | const gdb_byte *cur_ptr; |
639d11d3 | 18043 | |
c906108c | 18044 | cur_ptr = info_ptr; |
639d11d3 DC |
18045 | first_die = last_sibling = NULL; |
18046 | ||
18047 | while (1) | |
c906108c | 18048 | { |
639d11d3 | 18049 | struct die_info *die |
dee91e82 | 18050 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18051 | |
1d325ec1 | 18052 | if (die == NULL) |
c906108c | 18053 | { |
639d11d3 DC |
18054 | *new_info_ptr = cur_ptr; |
18055 | return first_die; | |
c906108c | 18056 | } |
1d325ec1 DJ |
18057 | |
18058 | if (!first_die) | |
18059 | first_die = die; | |
c906108c | 18060 | else |
1d325ec1 DJ |
18061 | last_sibling->sibling = die; |
18062 | ||
18063 | last_sibling = die; | |
c906108c | 18064 | } |
c906108c SS |
18065 | } |
18066 | ||
bf6af496 DE |
18067 | /* Read a die, all of its descendents, and all of its siblings; set |
18068 | all of the fields of all of the dies correctly. Arguments are as | |
18069 | in read_die_and_children. | |
18070 | This the main entry point for reading a DIE and all its children. */ | |
18071 | ||
18072 | static struct die_info * | |
18073 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18074 | const gdb_byte *info_ptr, |
18075 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18076 | struct die_info *parent) |
18077 | { | |
18078 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18079 | new_info_ptr, parent); | |
18080 | ||
b4f54984 | 18081 | if (dwarf_die_debug) |
bf6af496 DE |
18082 | { |
18083 | fprintf_unfiltered (gdb_stdlog, | |
18084 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18085 | reader->die_section->get_name (), |
bf6af496 DE |
18086 | (unsigned) (info_ptr - reader->die_section->buffer), |
18087 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18088 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18089 | } |
18090 | ||
18091 | return die; | |
18092 | } | |
18093 | ||
3019eac3 DE |
18094 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18095 | attributes. | |
18096 | The caller is responsible for filling in the extra attributes | |
18097 | and updating (*DIEP)->num_attrs. | |
18098 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18099 | except for its child, sibling, and parent fields. */ |
93311388 | 18100 | |
d521ce57 | 18101 | static const gdb_byte * |
3019eac3 | 18102 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18103 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 18104 | int num_extra_attrs) |
93311388 | 18105 | { |
b64f50a1 | 18106 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18107 | struct abbrev_info *abbrev; |
18108 | struct die_info *die; | |
18109 | struct dwarf2_cu *cu = reader->cu; | |
18110 | bfd *abfd = reader->abfd; | |
18111 | ||
9c541725 | 18112 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18113 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18114 | info_ptr += bytes_read; | |
18115 | if (!abbrev_number) | |
18116 | { | |
18117 | *diep = NULL; | |
93311388 DE |
18118 | return info_ptr; |
18119 | } | |
18120 | ||
685af9cd | 18121 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18122 | if (!abbrev) |
348e048f DE |
18123 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18124 | abbrev_number, | |
18125 | bfd_get_filename (abfd)); | |
18126 | ||
3019eac3 | 18127 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18128 | die->sect_off = sect_off; |
93311388 DE |
18129 | die->tag = abbrev->tag; |
18130 | die->abbrev = abbrev_number; | |
3e225074 | 18131 | die->has_children = abbrev->has_children; |
93311388 | 18132 | |
3019eac3 DE |
18133 | /* Make the result usable. |
18134 | The caller needs to update num_attrs after adding the extra | |
18135 | attributes. */ | |
93311388 DE |
18136 | die->num_attrs = abbrev->num_attrs; |
18137 | ||
18a8505e | 18138 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 18139 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
18140 | { |
18141 | bool need_reprocess; | |
18142 | info_ptr = | |
18143 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
18144 | info_ptr, &need_reprocess); | |
18145 | if (need_reprocess) | |
18146 | indexes_that_need_reprocess.push_back (i); | |
18147 | } | |
18148 | ||
052c8bb8 | 18149 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
18150 | if (attr != nullptr) |
18151 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18152 | |
41144253 | 18153 | attr = die->attr (DW_AT_loclists_base); |
18154 | if (attr != nullptr) | |
18155 | cu->loclist_base = DW_UNSND (attr); | |
18156 | ||
a39fdb41 | 18157 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
18158 | if (maybe_addr_base.has_value ()) |
18159 | cu->addr_base = *maybe_addr_base; | |
18160 | for (int index : indexes_that_need_reprocess) | |
18161 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 18162 | *diep = die; |
93311388 DE |
18163 | return info_ptr; |
18164 | } | |
18165 | ||
3019eac3 DE |
18166 | /* Read a die and all its attributes. |
18167 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18168 | except for its child, sibling, and parent fields. */ |
3019eac3 | 18169 | |
d521ce57 | 18170 | static const gdb_byte * |
3019eac3 | 18171 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 18172 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 18173 | { |
d521ce57 | 18174 | const gdb_byte *result; |
bf6af496 | 18175 | |
3e225074 | 18176 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 18177 | |
b4f54984 | 18178 | if (dwarf_die_debug) |
bf6af496 DE |
18179 | { |
18180 | fprintf_unfiltered (gdb_stdlog, | |
18181 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18182 | reader->die_section->get_name (), |
bf6af496 DE |
18183 | (unsigned) (info_ptr - reader->die_section->buffer), |
18184 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18185 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18186 | } |
18187 | ||
18188 | return result; | |
3019eac3 | 18189 | } |
433df2d4 | 18190 | \f |
c906108c | 18191 | |
72bf9492 DJ |
18192 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18193 | symbol for. */ | |
18194 | ||
18195 | static int | |
18196 | is_type_tag_for_partial (int tag) | |
18197 | { | |
18198 | switch (tag) | |
18199 | { | |
18200 | #if 0 | |
18201 | /* Some types that would be reasonable to generate partial symbols for, | |
18202 | that we don't at present. */ | |
18203 | case DW_TAG_array_type: | |
18204 | case DW_TAG_file_type: | |
18205 | case DW_TAG_ptr_to_member_type: | |
18206 | case DW_TAG_set_type: | |
18207 | case DW_TAG_string_type: | |
18208 | case DW_TAG_subroutine_type: | |
18209 | #endif | |
18210 | case DW_TAG_base_type: | |
18211 | case DW_TAG_class_type: | |
680b30c7 | 18212 | case DW_TAG_interface_type: |
72bf9492 DJ |
18213 | case DW_TAG_enumeration_type: |
18214 | case DW_TAG_structure_type: | |
18215 | case DW_TAG_subrange_type: | |
18216 | case DW_TAG_typedef: | |
18217 | case DW_TAG_union_type: | |
18218 | return 1; | |
18219 | default: | |
18220 | return 0; | |
18221 | } | |
18222 | } | |
18223 | ||
18224 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18225 | ||
18226 | static struct partial_die_info * | |
dee91e82 | 18227 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18228 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18229 | { |
dee91e82 | 18230 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18231 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 18232 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18233 | unsigned int bytes_read; |
5afb4e99 | 18234 | unsigned int load_all = 0; |
72bf9492 DJ |
18235 | int nesting_level = 1; |
18236 | ||
18237 | parent_die = NULL; | |
18238 | last_die = NULL; | |
18239 | ||
7adf1e79 DE |
18240 | gdb_assert (cu->per_cu != NULL); |
18241 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18242 | load_all = 1; |
18243 | ||
72bf9492 DJ |
18244 | cu->partial_dies |
18245 | = htab_create_alloc_ex (cu->header.length / 12, | |
18246 | partial_die_hash, | |
18247 | partial_die_eq, | |
18248 | NULL, | |
18249 | &cu->comp_unit_obstack, | |
18250 | hashtab_obstack_allocate, | |
18251 | dummy_obstack_deallocate); | |
18252 | ||
72bf9492 DJ |
18253 | while (1) |
18254 | { | |
685af9cd | 18255 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18256 | |
18257 | /* A NULL abbrev means the end of a series of children. */ | |
18258 | if (abbrev == NULL) | |
18259 | { | |
18260 | if (--nesting_level == 0) | |
cd9983dd YQ |
18261 | return first_die; |
18262 | ||
72bf9492 DJ |
18263 | info_ptr += bytes_read; |
18264 | last_die = parent_die; | |
18265 | parent_die = parent_die->die_parent; | |
18266 | continue; | |
18267 | } | |
18268 | ||
98bfdba5 PA |
18269 | /* Check for template arguments. We never save these; if |
18270 | they're seen, we just mark the parent, and go on our way. */ | |
18271 | if (parent_die != NULL | |
18272 | && cu->language == language_cplus | |
18273 | && (abbrev->tag == DW_TAG_template_type_param | |
18274 | || abbrev->tag == DW_TAG_template_value_param)) | |
18275 | { | |
18276 | parent_die->has_template_arguments = 1; | |
18277 | ||
18278 | if (!load_all) | |
18279 | { | |
18280 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18281 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18282 | continue; |
18283 | } | |
18284 | } | |
18285 | ||
0d99eb77 | 18286 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18287 | Skip their other children. */ |
18288 | if (!load_all | |
18289 | && cu->language == language_cplus | |
18290 | && parent_die != NULL | |
f9b5d5ea TV |
18291 | && parent_die->tag == DW_TAG_subprogram |
18292 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 18293 | { |
dee91e82 | 18294 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18295 | continue; |
18296 | } | |
18297 | ||
5afb4e99 DJ |
18298 | /* Check whether this DIE is interesting enough to save. Normally |
18299 | we would not be interested in members here, but there may be | |
18300 | later variables referencing them via DW_AT_specification (for | |
18301 | static members). */ | |
18302 | if (!load_all | |
18303 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18304 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18305 | && abbrev->tag != DW_TAG_enumerator |
18306 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18307 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18308 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18309 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18310 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18311 | && abbrev->tag != DW_TAG_module |
95554aad | 18312 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18313 | && abbrev->tag != DW_TAG_imported_unit |
18314 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18315 | { |
18316 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18317 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18318 | continue; |
18319 | } | |
18320 | ||
6f06d47b YQ |
18321 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18322 | abbrev); | |
cd9983dd | 18323 | |
48fbe735 | 18324 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18325 | |
18326 | /* This two-pass algorithm for processing partial symbols has a | |
18327 | high cost in cache pressure. Thus, handle some simple cases | |
18328 | here which cover the majority of C partial symbols. DIEs | |
18329 | which neither have specification tags in them, nor could have | |
18330 | specification tags elsewhere pointing at them, can simply be | |
18331 | processed and discarded. | |
18332 | ||
18333 | This segment is also optional; scan_partial_symbols and | |
18334 | add_partial_symbol will handle these DIEs if we chain | |
18335 | them in normally. When compilers which do not emit large | |
18336 | quantities of duplicate debug information are more common, | |
18337 | this code can probably be removed. */ | |
18338 | ||
18339 | /* Any complete simple types at the top level (pretty much all | |
18340 | of them, for a language without namespaces), can be processed | |
18341 | directly. */ | |
18342 | if (parent_die == NULL | |
cd9983dd YQ |
18343 | && pdi.has_specification == 0 |
18344 | && pdi.is_declaration == 0 | |
18345 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18346 | || pdi.tag == DW_TAG_base_type | |
18347 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18348 | { |
7d00ffec | 18349 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
18350 | add_partial_symbol (&pdi, cu); |
18351 | ||
cd9983dd | 18352 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18353 | continue; |
18354 | } | |
18355 | ||
d8228535 JK |
18356 | /* The exception for DW_TAG_typedef with has_children above is |
18357 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18358 | type_name_or_error will error on such types later. |
d8228535 JK |
18359 | |
18360 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18361 | it could not find the child DIEs referenced later, this is checked | |
18362 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18363 | ||
cd9983dd | 18364 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18365 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18366 | "- DIE at %s [in module %s]"), |
cd9983dd | 18367 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18368 | |
72bf9492 DJ |
18369 | /* If we're at the second level, and we're an enumerator, and |
18370 | our parent has no specification (meaning possibly lives in a | |
18371 | namespace elsewhere), then we can add the partial symbol now | |
18372 | instead of queueing it. */ | |
cd9983dd | 18373 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18374 | && parent_die != NULL |
18375 | && parent_die->die_parent == NULL | |
18376 | && parent_die->tag == DW_TAG_enumeration_type | |
18377 | && parent_die->has_specification == 0) | |
18378 | { | |
7d00ffec | 18379 | if (pdi.raw_name == NULL) |
b98664d3 | 18380 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18381 | else if (building_psymtab) |
f0fbb768 | 18382 | add_partial_symbol (&pdi, cu); |
72bf9492 | 18383 | |
cd9983dd | 18384 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18385 | continue; |
18386 | } | |
18387 | ||
cd9983dd | 18388 | struct partial_die_info *part_die |
6f06d47b | 18389 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18390 | |
72bf9492 DJ |
18391 | /* We'll save this DIE so link it in. */ |
18392 | part_die->die_parent = parent_die; | |
18393 | part_die->die_sibling = NULL; | |
18394 | part_die->die_child = NULL; | |
18395 | ||
18396 | if (last_die && last_die == parent_die) | |
18397 | last_die->die_child = part_die; | |
18398 | else if (last_die) | |
18399 | last_die->die_sibling = part_die; | |
18400 | ||
18401 | last_die = part_die; | |
18402 | ||
18403 | if (first_die == NULL) | |
18404 | first_die = part_die; | |
18405 | ||
18406 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18407 | find interesting need to be in the hash table, because we | |
18408 | also have the parent/sibling/child chains; only those that we | |
18409 | might refer to by offset later during partial symbol reading. | |
18410 | ||
18411 | For now this means things that might have be the target of a | |
18412 | DW_AT_specification, DW_AT_abstract_origin, or | |
18413 | DW_AT_extension. DW_AT_extension will refer only to | |
18414 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18415 | many things under the function DIE, but we do not recurse | |
18416 | into function DIEs during partial symbol reading) and | |
18417 | possibly variables as well; DW_AT_specification refers to | |
18418 | declarations. Declarations ought to have the DW_AT_declaration | |
18419 | flag. It happens that GCC forgets to put it in sometimes, but | |
18420 | only for functions, not for types. | |
18421 | ||
18422 | Adding more things than necessary to the hash table is harmless | |
18423 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18424 | wasted time in find_partial_die, when we reread the compilation |
18425 | unit with load_all_dies set. */ | |
72bf9492 | 18426 | |
5afb4e99 | 18427 | if (load_all |
72929c62 | 18428 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18429 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18430 | || abbrev->tag == DW_TAG_variable |
18431 | || abbrev->tag == DW_TAG_namespace | |
18432 | || part_die->is_declaration) | |
18433 | { | |
18434 | void **slot; | |
18435 | ||
18436 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18437 | to_underlying (part_die->sect_off), |
18438 | INSERT); | |
72bf9492 DJ |
18439 | *slot = part_die; |
18440 | } | |
18441 | ||
72bf9492 | 18442 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18443 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18444 | languages we have to, so that we can get at method physnames |
18445 | to infer fully qualified class names, for DW_AT_specification, | |
18446 | and for C++ template arguments. For C++, we also look one level | |
18447 | inside functions to find template arguments (if the name of the | |
18448 | function does not already contain the template arguments). | |
bc30ff58 | 18449 | |
0a4b0913 AB |
18450 | For Ada and Fortran, we need to scan the children of subprograms |
18451 | and lexical blocks as well because these languages allow the | |
18452 | definition of nested entities that could be interesting for the | |
18453 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18454 | if (last_die->has_children |
5afb4e99 DJ |
18455 | && (load_all |
18456 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18457 | || last_die->tag == DW_TAG_module |
72bf9492 | 18458 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18459 | || (cu->language == language_cplus |
18460 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
18461 | && (last_die->raw_name == NULL |
18462 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
18463 | || (cu->language != language_c |
18464 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18465 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18466 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18467 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18468 | || ((cu->language == language_ada |
18469 | || cu->language == language_fortran) | |
bc30ff58 JB |
18470 | && (last_die->tag == DW_TAG_subprogram |
18471 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18472 | { |
18473 | nesting_level++; | |
18474 | parent_die = last_die; | |
18475 | continue; | |
18476 | } | |
18477 | ||
18478 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18479 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18480 | |
18481 | /* Back to the top, do it again. */ | |
18482 | } | |
18483 | } | |
18484 | ||
6f06d47b YQ |
18485 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18486 | struct abbrev_info *abbrev) | |
18487 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18488 | { | |
18489 | } | |
18490 | ||
7d00ffec TT |
18491 | /* See class definition. */ |
18492 | ||
18493 | const char * | |
18494 | partial_die_info::name (dwarf2_cu *cu) | |
18495 | { | |
18496 | if (!canonical_name && raw_name != nullptr) | |
18497 | { | |
18498 | struct objfile *objfile = cu->per_objfile->objfile; | |
18499 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
18500 | canonical_name = 1; | |
18501 | } | |
18502 | ||
18503 | return raw_name; | |
18504 | } | |
18505 | ||
35cc7ed7 YQ |
18506 | /* Read a minimal amount of information into the minimal die structure. |
18507 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18508 | |
48fbe735 YQ |
18509 | const gdb_byte * |
18510 | partial_die_info::read (const struct die_reader_specs *reader, | |
18511 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18512 | { |
dee91e82 | 18513 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 18514 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 18515 | unsigned int i; |
c5aa993b | 18516 | int has_low_pc_attr = 0; |
c906108c | 18517 | int has_high_pc_attr = 0; |
91da1414 | 18518 | int high_pc_relative = 0; |
c906108c | 18519 | |
fd0a254f | 18520 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18521 | { |
e7da7f8f | 18522 | attribute attr; |
18a8505e | 18523 | bool need_reprocess; |
e7da7f8f | 18524 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], |
18a8505e AT |
18525 | info_ptr, &need_reprocess); |
18526 | /* String and address offsets that need to do the reprocessing have | |
18527 | already been read at this point, so there is no need to wait until | |
18528 | the loop terminates to do the reprocessing. */ | |
18529 | if (need_reprocess) | |
e7da7f8f | 18530 | read_attribute_reprocess (reader, &attr); |
c906108c | 18531 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18532 | partial symbol table. */ |
c906108c SS |
18533 | switch (attr.name) |
18534 | { | |
18535 | case DW_AT_name: | |
48fbe735 | 18536 | switch (tag) |
71c25dea TT |
18537 | { |
18538 | case DW_TAG_compile_unit: | |
95554aad | 18539 | case DW_TAG_partial_unit: |
348e048f | 18540 | case DW_TAG_type_unit: |
71c25dea TT |
18541 | /* Compilation units have a DW_AT_name that is a filename, not |
18542 | a source language identifier. */ | |
18543 | case DW_TAG_enumeration_type: | |
18544 | case DW_TAG_enumerator: | |
18545 | /* These tags always have simple identifiers already; no need | |
18546 | to canonicalize them. */ | |
7d00ffec TT |
18547 | canonical_name = 1; |
18548 | raw_name = DW_STRING (&attr); | |
71c25dea TT |
18549 | break; |
18550 | default: | |
7d00ffec TT |
18551 | canonical_name = 0; |
18552 | raw_name = DW_STRING (&attr); | |
71c25dea TT |
18553 | break; |
18554 | } | |
c906108c | 18555 | break; |
31ef98ae | 18556 | case DW_AT_linkage_name: |
c906108c | 18557 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18558 | /* Note that both forms of linkage name might appear. We |
18559 | assume they will be the same, and we only store the last | |
18560 | one we see. */ | |
e61108c9 | 18561 | linkage_name = attr.value_as_string (); |
787de330 TT |
18562 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
18563 | See https://github.com/rust-lang/rust/issues/32925. */ | |
18564 | if (cu->language == language_rust && linkage_name != NULL | |
18565 | && strchr (linkage_name, '{') != NULL) | |
18566 | linkage_name = NULL; | |
c906108c SS |
18567 | break; |
18568 | case DW_AT_low_pc: | |
18569 | has_low_pc_attr = 1; | |
cd6c91b4 | 18570 | lowpc = attr.value_as_address (); |
c906108c SS |
18571 | break; |
18572 | case DW_AT_high_pc: | |
18573 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
18574 | highpc = attr.value_as_address (); |
18575 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 18576 | high_pc_relative = 1; |
c906108c SS |
18577 | break; |
18578 | case DW_AT_location: | |
0963b4bd | 18579 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 18580 | if (attr.form_is_block ()) |
8e19ed76 | 18581 | { |
48fbe735 | 18582 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18583 | } |
cd6c91b4 | 18584 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 18585 | { |
4d3c2250 | 18586 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18587 | } |
18588 | else | |
18589 | { | |
4d3c2250 KB |
18590 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18591 | "partial symbol information"); | |
8e19ed76 | 18592 | } |
c906108c | 18593 | break; |
c906108c | 18594 | case DW_AT_external: |
48fbe735 | 18595 | is_external = DW_UNSND (&attr); |
c906108c SS |
18596 | break; |
18597 | case DW_AT_declaration: | |
48fbe735 | 18598 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18599 | break; |
18600 | case DW_AT_type: | |
48fbe735 | 18601 | has_type = 1; |
c906108c SS |
18602 | break; |
18603 | case DW_AT_abstract_origin: | |
18604 | case DW_AT_specification: | |
72bf9492 | 18605 | case DW_AT_extension: |
48fbe735 | 18606 | has_specification = 1; |
0826b30a | 18607 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 18608 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 18609 | || cu->per_cu->is_dwz); |
c906108c SS |
18610 | break; |
18611 | case DW_AT_sibling: | |
18612 | /* Ignore absolute siblings, they might point outside of | |
18613 | the current compile unit. */ | |
18614 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18615 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18616 | else |
b9502d3f | 18617 | { |
48fbe735 | 18618 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 18619 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 18620 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
18621 | |
18622 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18623 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 18624 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 18625 | reader->die_section->overflow_complaint (); |
b9502d3f | 18626 | else |
48fbe735 | 18627 | sibling = sibling_ptr; |
b9502d3f | 18628 | } |
c906108c | 18629 | break; |
fa4028e9 | 18630 | case DW_AT_byte_size: |
48fbe735 | 18631 | has_byte_size = 1; |
fa4028e9 | 18632 | break; |
ff908ebf | 18633 | case DW_AT_const_value: |
48fbe735 | 18634 | has_const_value = 1; |
ff908ebf | 18635 | break; |
68511cec CES |
18636 | case DW_AT_calling_convention: |
18637 | /* DWARF doesn't provide a way to identify a program's source-level | |
18638 | entry point. DW_AT_calling_convention attributes are only meant | |
18639 | to describe functions' calling conventions. | |
18640 | ||
18641 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18642 | Fortran, and before DWARF 4 DW_CC_program was the only |
18643 | piece of debugging information whose definition refers to | |
18644 | a 'main program' at all, several compilers marked Fortran | |
18645 | main programs with DW_CC_program --- even when those | |
18646 | functions use the standard calling conventions. | |
18647 | ||
18648 | Although DWARF now specifies a way to provide this | |
18649 | information, we support this practice for backward | |
18650 | compatibility. */ | |
68511cec | 18651 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18652 | && cu->language == language_fortran) |
48fbe735 | 18653 | main_subprogram = 1; |
68511cec | 18654 | break; |
481860b3 GB |
18655 | case DW_AT_inline: |
18656 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18657 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18658 | may_be_inlined = 1; |
481860b3 | 18659 | break; |
95554aad TT |
18660 | |
18661 | case DW_AT_import: | |
48fbe735 | 18662 | if (tag == DW_TAG_imported_unit) |
36586728 | 18663 | { |
0826b30a | 18664 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 18665 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
18666 | || cu->per_cu->is_dwz); |
18667 | } | |
95554aad TT |
18668 | break; |
18669 | ||
0c1b455e | 18670 | case DW_AT_main_subprogram: |
48fbe735 | 18671 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18672 | break; |
18673 | ||
05caa1d2 TT |
18674 | case DW_AT_ranges: |
18675 | { | |
18676 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18677 | but that requires a full DIE, so instead we just | |
18678 | reimplement it. */ | |
18679 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18680 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18681 | + (need_ranges_base | |
18682 | ? cu->ranges_base | |
18683 | : 0)); | |
18684 | ||
18685 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18686 | .debug_ranges section. */ | |
18687 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18688 | nullptr)) | |
18689 | has_pc_info = 1; | |
18690 | } | |
18691 | break; | |
18692 | ||
c906108c SS |
18693 | default: |
18694 | break; | |
18695 | } | |
18696 | } | |
18697 | ||
10d06d82 TT |
18698 | /* For Ada, if both the name and the linkage name appear, we prefer |
18699 | the latter. This lets "catch exception" work better, regardless | |
18700 | of the order in which the name and linkage name were emitted. | |
18701 | Really, though, this is just a workaround for the fact that gdb | |
18702 | doesn't store both the name and the linkage name. */ | |
18703 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 18704 | raw_name = linkage_name; |
10d06d82 | 18705 | |
91da1414 | 18706 | if (high_pc_relative) |
48fbe735 | 18707 | highpc += lowpc; |
91da1414 | 18708 | |
9373cf26 JK |
18709 | if (has_low_pc_attr && has_high_pc_attr) |
18710 | { | |
18711 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18712 | eliminate duplicate copies of functions and vtables and such. | |
18713 | The linker will arbitrarily choose one and discard the others. | |
18714 | The AT_*_pc values for such functions refer to local labels in | |
18715 | these sections. If the section from that file was discarded, the | |
18716 | labels are not in the output, so the relocs get a value of 0. | |
18717 | If this is a discarded function, mark the pc bounds as invalid, | |
18718 | so that GDB will ignore it. */ | |
976ca316 | 18719 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 18720 | { |
976ca316 | 18721 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 18722 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18723 | |
b98664d3 | 18724 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18725 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18726 | paddress (gdbarch, lowpc), |
18727 | sect_offset_str (sect_off), | |
9d8780f0 | 18728 | objfile_name (objfile)); |
9373cf26 JK |
18729 | } |
18730 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18731 | else if (lowpc >= highpc) |
9373cf26 | 18732 | { |
976ca316 | 18733 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 18734 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18735 | |
b98664d3 | 18736 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18737 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18738 | paddress (gdbarch, lowpc), |
18739 | paddress (gdbarch, highpc), | |
18740 | sect_offset_str (sect_off), | |
9c541725 | 18741 | objfile_name (objfile)); |
9373cf26 JK |
18742 | } |
18743 | else | |
48fbe735 | 18744 | has_pc_info = 1; |
9373cf26 | 18745 | } |
85cbf3d3 | 18746 | |
c906108c SS |
18747 | return info_ptr; |
18748 | } | |
18749 | ||
72bf9492 DJ |
18750 | /* Find a cached partial DIE at OFFSET in CU. */ |
18751 | ||
d590ff25 YQ |
18752 | struct partial_die_info * |
18753 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18754 | { |
18755 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18756 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18757 | |
9a3c8263 | 18758 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18759 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18760 | to_underlying (sect_off))); |
72bf9492 | 18761 | |
72bf9492 DJ |
18762 | return lookup_die; |
18763 | } | |
18764 | ||
348e048f DE |
18765 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18766 | except in the case of .debug_types DIEs which do not reference | |
18767 | outside their CU (they do however referencing other types via | |
55f1336d | 18768 | DW_FORM_ref_sig8). */ |
72bf9492 | 18769 | |
122cf0f2 | 18770 | static const struct cu_partial_die_info |
9c541725 | 18771 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18772 | { |
976ca316 SM |
18773 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
18774 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 18775 | struct partial_die_info *pd = NULL; |
72bf9492 | 18776 | |
36586728 | 18777 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 18778 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 18779 | { |
d590ff25 | 18780 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18781 | if (pd != NULL) |
fb816e8b | 18782 | return { cu, pd }; |
0d99eb77 DE |
18783 | /* We missed recording what we needed. |
18784 | Load all dies and try again. */ | |
5afb4e99 | 18785 | } |
0d99eb77 DE |
18786 | else |
18787 | { | |
18788 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18789 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18790 | { |
9d8780f0 SM |
18791 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18792 | " external reference to offset %s [in module %s].\n"), | |
18793 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18794 | bfd_get_filename (objfile->obfd)); |
18795 | } | |
7188ed02 SM |
18796 | dwarf2_per_cu_data *per_cu |
18797 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 18798 | per_objfile); |
72bf9492 | 18799 | |
976ca316 | 18800 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 18801 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 18802 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 18803 | |
976ca316 | 18804 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
18805 | |
18806 | cu->last_used = 0; | |
18807 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 18808 | } |
5afb4e99 | 18809 | |
dee91e82 DE |
18810 | /* If we didn't find it, and not all dies have been loaded, |
18811 | load them all and try again. */ | |
18812 | ||
7188ed02 | 18813 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 18814 | { |
7188ed02 | 18815 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
18816 | |
18817 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18818 | THIS_CU->cu may already be in use. So we can't just free it and | |
18819 | replace its DIEs with the ones we read in. Instead, we leave those | |
18820 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18821 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18822 | set. */ | |
976ca316 | 18823 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 18824 | |
7188ed02 | 18825 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18826 | } |
18827 | ||
18828 | if (pd == NULL) | |
18829 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18830 | _("could not find partial DIE %s " |
3e43a32a | 18831 | "in cache [from module %s]\n"), |
9d8780f0 | 18832 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 18833 | return { cu, pd }; |
72bf9492 DJ |
18834 | } |
18835 | ||
abc72ce4 DE |
18836 | /* See if we can figure out if the class lives in a namespace. We do |
18837 | this by looking for a member function; its demangled name will | |
18838 | contain namespace info, if there is any. */ | |
18839 | ||
18840 | static void | |
18841 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18842 | struct dwarf2_cu *cu) | |
18843 | { | |
18844 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18845 | what template types look like, because the demangler | |
18846 | frequently doesn't give the same name as the debug info. We | |
18847 | could fix this by only using the demangled name to get the | |
18848 | prefix (but see comment in read_structure_type). */ | |
18849 | ||
18850 | struct partial_die_info *real_pdi; | |
18851 | struct partial_die_info *child_pdi; | |
18852 | ||
18853 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18854 | we should not do this. We'll prepend the parent's fully qualified | |
18855 | name when we create the partial symbol. */ | |
18856 | ||
18857 | real_pdi = struct_pdi; | |
18858 | while (real_pdi->has_specification) | |
fb816e8b | 18859 | { |
122cf0f2 AB |
18860 | auto res = find_partial_die (real_pdi->spec_offset, |
18861 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18862 | real_pdi = res.pdi; |
18863 | cu = res.cu; | |
18864 | } | |
abc72ce4 DE |
18865 | |
18866 | if (real_pdi->die_parent != NULL) | |
18867 | return; | |
18868 | ||
18869 | for (child_pdi = struct_pdi->die_child; | |
18870 | child_pdi != NULL; | |
18871 | child_pdi = child_pdi->die_sibling) | |
18872 | { | |
18873 | if (child_pdi->tag == DW_TAG_subprogram | |
18874 | && child_pdi->linkage_name != NULL) | |
18875 | { | |
43816ebc | 18876 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
18877 | (cu->language_defn->class_name_from_physname |
18878 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
18879 | if (actual_class_name != NULL) |
18880 | { | |
5e22e966 | 18881 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
18882 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
18883 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
18884 | } |
18885 | break; | |
18886 | } | |
18887 | } | |
18888 | } | |
18889 | ||
25c11aca TV |
18890 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
18891 | attribute. */ | |
18892 | ||
18893 | static bool | |
18894 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
18895 | { | |
18896 | switch (tag) | |
18897 | { | |
18898 | case DW_TAG_constant: | |
18899 | case DW_TAG_enumerator: | |
18900 | case DW_TAG_formal_parameter: | |
18901 | case DW_TAG_template_value_param: | |
18902 | case DW_TAG_variable: | |
18903 | return true; | |
18904 | } | |
18905 | ||
18906 | return false; | |
18907 | } | |
18908 | ||
52356b79 YQ |
18909 | void |
18910 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18911 | { |
abc72ce4 DE |
18912 | /* Once we've fixed up a die, there's no point in doing so again. |
18913 | This also avoids a memory leak if we were to call | |
18914 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18915 | if (fixup_called) |
abc72ce4 DE |
18916 | return; |
18917 | ||
72bf9492 DJ |
18918 | /* If we found a reference attribute and the DIE has no name, try |
18919 | to find a name in the referred to DIE. */ | |
18920 | ||
7d00ffec | 18921 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
18922 | { |
18923 | struct partial_die_info *spec_die; | |
72bf9492 | 18924 | |
122cf0f2 | 18925 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18926 | spec_die = res.pdi; |
18927 | cu = res.cu; | |
72bf9492 | 18928 | |
52356b79 | 18929 | spec_die->fixup (cu); |
72bf9492 | 18930 | |
7d00ffec | 18931 | if (spec_die->raw_name) |
72bf9492 | 18932 | { |
7d00ffec TT |
18933 | raw_name = spec_die->raw_name; |
18934 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
18935 | |
18936 | /* Copy DW_AT_external attribute if it is set. */ | |
18937 | if (spec_die->is_external) | |
52356b79 | 18938 | is_external = spec_die->is_external; |
72bf9492 DJ |
18939 | } |
18940 | } | |
18941 | ||
25c11aca TV |
18942 | if (!has_const_value && has_specification |
18943 | && can_have_DW_AT_const_value_p (tag)) | |
18944 | { | |
18945 | struct partial_die_info *spec_die; | |
18946 | ||
18947 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
18948 | spec_die = res.pdi; | |
18949 | cu = res.cu; | |
18950 | ||
18951 | spec_die->fixup (cu); | |
18952 | ||
18953 | if (spec_die->has_const_value) | |
18954 | { | |
18955 | /* Copy DW_AT_const_value attribute if it is set. */ | |
18956 | has_const_value = spec_die->has_const_value; | |
18957 | } | |
18958 | } | |
18959 | ||
72bf9492 | 18960 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 18961 | |
7d00ffec TT |
18962 | if (raw_name == NULL && tag == DW_TAG_namespace) |
18963 | { | |
18964 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
18965 | canonical_name = 1; | |
18966 | } | |
72bf9492 | 18967 | |
abc72ce4 DE |
18968 | /* If there is no parent die to provide a namespace, and there are |
18969 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18970 | name. */ |
abc72ce4 | 18971 | if (cu->language == language_cplus |
5e22e966 | 18972 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
18973 | && die_parent == NULL |
18974 | && has_children | |
18975 | && (tag == DW_TAG_class_type | |
18976 | || tag == DW_TAG_structure_type | |
18977 | || tag == DW_TAG_union_type)) | |
18978 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18979 | |
53832f31 TT |
18980 | /* GCC might emit a nameless struct or union that has a linkage |
18981 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 18982 | if (raw_name == NULL |
52356b79 YQ |
18983 | && (tag == DW_TAG_class_type |
18984 | || tag == DW_TAG_interface_type | |
18985 | || tag == DW_TAG_structure_type | |
18986 | || tag == DW_TAG_union_type) | |
18987 | && linkage_name != NULL) | |
53832f31 | 18988 | { |
43816ebc TT |
18989 | gdb::unique_xmalloc_ptr<char> demangled |
18990 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18991 | if (demangled != nullptr) | |
53832f31 | 18992 | { |
96408a79 SA |
18993 | const char *base; |
18994 | ||
18995 | /* Strip any leading namespaces/classes, keep only the base name. | |
18996 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18997 | base = strrchr (demangled.get (), ':'); |
18998 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18999 | base++; |
19000 | else | |
43816ebc | 19001 | base = demangled.get (); |
96408a79 | 19002 | |
5e22e966 | 19003 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19004 | raw_name = objfile->intern (base); |
19005 | canonical_name = 1; | |
53832f31 TT |
19006 | } |
19007 | } | |
19008 | ||
52356b79 | 19009 | fixup_called = 1; |
72bf9492 DJ |
19010 | } |
19011 | ||
41144253 | 19012 | /* Read the .debug_loclists header contents from the given SECTION in the |
19013 | HEADER. */ | |
19014 | static void | |
19015 | read_loclist_header (struct loclist_header *header, | |
19016 | struct dwarf2_section_info *section) | |
19017 | { | |
19018 | unsigned int bytes_read; | |
19019 | bfd *abfd = section->get_bfd_owner (); | |
19020 | const gdb_byte *info_ptr = section->buffer; | |
19021 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
19022 | info_ptr += bytes_read; | |
19023 | header->version = read_2_bytes (abfd, info_ptr); | |
19024 | info_ptr += 2; | |
19025 | header->addr_size = read_1_byte (abfd, info_ptr); | |
19026 | info_ptr += 1; | |
19027 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
19028 | info_ptr += 1; | |
19029 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
19030 | } | |
19031 | ||
19032 | /* Return the DW_AT_loclists_base value for the CU. */ | |
19033 | static ULONGEST | |
19034 | lookup_loclist_base (struct dwarf2_cu *cu) | |
19035 | { | |
19036 | /* For the .dwo unit, the loclist_base points to the first offset following | |
19037 | the header. The header consists of the following entities- | |
19038 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
19039 | bit format) | |
19040 | 2. version (2 bytes) | |
19041 | 3. address size (1 byte) | |
19042 | 4. segment selector size (1 byte) | |
19043 | 5. offset entry count (4 bytes) | |
19044 | These sizes are derived as per the DWARFv5 standard. */ | |
19045 | if (cu->dwo_unit != nullptr) | |
19046 | { | |
19047 | if (cu->header.initial_length_size == 4) | |
19048 | return LOCLIST_HEADER_SIZE32; | |
19049 | return LOCLIST_HEADER_SIZE64; | |
19050 | } | |
19051 | return cu->loclist_base; | |
19052 | } | |
19053 | ||
19054 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
19055 | array of offsets in the .debug_loclists section. */ | |
19056 | static CORE_ADDR | |
19057 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
19058 | { | |
976ca316 SM |
19059 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19060 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 19061 | bfd *abfd = objfile->obfd; |
19062 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
19063 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
19064 | ||
19065 | section->read (objfile); | |
19066 | if (section->buffer == NULL) | |
19067 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
19068 | "section [in module %s]"), objfile_name (objfile)); | |
19069 | struct loclist_header header; | |
19070 | read_loclist_header (&header, section); | |
19071 | if (loclist_index >= header.offset_entry_count) | |
19072 | complaint (_("DW_FORM_loclistx pointing outside of " | |
19073 | ".debug_loclists offset array [in module %s]"), | |
19074 | objfile_name (objfile)); | |
19075 | if (loclist_base + loclist_index * cu->header.offset_size | |
19076 | >= section->size) | |
19077 | complaint (_("DW_FORM_loclistx pointing outside of " | |
19078 | ".debug_loclists section [in module %s]"), | |
19079 | objfile_name (objfile)); | |
19080 | const gdb_byte *info_ptr | |
19081 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
19082 | ||
19083 | if (cu->header.offset_size == 4) | |
19084 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
19085 | else | |
19086 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
19087 | } | |
19088 | ||
18a8505e AT |
19089 | /* Process the attributes that had to be skipped in the first round. These |
19090 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
19091 | They could not have been processed in the first round, because at the time | |
19092 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
19093 | static void |
19094 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
19095 | struct attribute *attr) | |
18a8505e AT |
19096 | { |
19097 | struct dwarf2_cu *cu = reader->cu; | |
19098 | switch (attr->form) | |
19099 | { | |
19100 | case DW_FORM_addrx: | |
19101 | case DW_FORM_GNU_addr_index: | |
19102 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
19103 | break; | |
41144253 | 19104 | case DW_FORM_loclistx: |
19105 | DW_UNSND (attr) = read_loclist_index (cu, DW_UNSND (attr)); | |
19106 | break; | |
18a8505e AT |
19107 | case DW_FORM_strx: |
19108 | case DW_FORM_strx1: | |
19109 | case DW_FORM_strx2: | |
19110 | case DW_FORM_strx3: | |
19111 | case DW_FORM_strx4: | |
19112 | case DW_FORM_GNU_str_index: | |
19113 | { | |
19114 | unsigned int str_index = DW_UNSND (attr); | |
19115 | if (reader->dwo_file != NULL) | |
19116 | { | |
19117 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
19118 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19119 | } | |
19120 | else | |
19121 | { | |
19122 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
19123 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19124 | } | |
19125 | break; | |
19126 | } | |
19127 | default: | |
19128 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
19129 | } | |
19130 | } | |
19131 | ||
a8329558 | 19132 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19133 | |
d521ce57 | 19134 | static const gdb_byte * |
dee91e82 DE |
19135 | read_attribute_value (const struct die_reader_specs *reader, |
19136 | struct attribute *attr, unsigned form, | |
18a8505e AT |
19137 | LONGEST implicit_const, const gdb_byte *info_ptr, |
19138 | bool *need_reprocess) | |
c906108c | 19139 | { |
dee91e82 | 19140 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
19141 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19142 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 19143 | bfd *abfd = reader->abfd; |
e7c27a73 | 19144 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19145 | unsigned int bytes_read; |
19146 | struct dwarf_block *blk; | |
18a8505e | 19147 | *need_reprocess = false; |
c906108c | 19148 | |
aead7601 | 19149 | attr->form = (enum dwarf_form) form; |
a8329558 | 19150 | switch (form) |
c906108c | 19151 | { |
c906108c | 19152 | case DW_FORM_ref_addr: |
ae411497 | 19153 | if (cu->header.version == 2) |
c8a7a66f TT |
19154 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
19155 | &bytes_read); | |
ae411497 | 19156 | else |
8266302d TT |
19157 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
19158 | &bytes_read); | |
ae411497 TT |
19159 | info_ptr += bytes_read; |
19160 | break; | |
36586728 | 19161 | case DW_FORM_GNU_ref_alt: |
8266302d | 19162 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
19163 | info_ptr += bytes_read; |
19164 | break; | |
ae411497 | 19165 | case DW_FORM_addr: |
08feed99 TT |
19166 | { |
19167 | struct gdbarch *gdbarch = objfile->arch (); | |
19168 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); | |
19169 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); | |
19170 | info_ptr += bytes_read; | |
19171 | } | |
c906108c SS |
19172 | break; |
19173 | case DW_FORM_block2: | |
7b5a2f43 | 19174 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19175 | blk->size = read_2_bytes (abfd, info_ptr); |
19176 | info_ptr += 2; | |
19177 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19178 | info_ptr += blk->size; | |
19179 | DW_BLOCK (attr) = blk; | |
19180 | break; | |
19181 | case DW_FORM_block4: | |
7b5a2f43 | 19182 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19183 | blk->size = read_4_bytes (abfd, info_ptr); |
19184 | info_ptr += 4; | |
19185 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19186 | info_ptr += blk->size; | |
19187 | DW_BLOCK (attr) = blk; | |
19188 | break; | |
19189 | case DW_FORM_data2: | |
19190 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19191 | info_ptr += 2; | |
19192 | break; | |
19193 | case DW_FORM_data4: | |
19194 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19195 | info_ptr += 4; | |
19196 | break; | |
19197 | case DW_FORM_data8: | |
19198 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19199 | info_ptr += 8; | |
19200 | break; | |
0224619f JK |
19201 | case DW_FORM_data16: |
19202 | blk = dwarf_alloc_block (cu); | |
19203 | blk->size = 16; | |
19204 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19205 | info_ptr += 16; | |
19206 | DW_BLOCK (attr) = blk; | |
19207 | break; | |
2dc7f7b3 | 19208 | case DW_FORM_sec_offset: |
8266302d | 19209 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
19210 | info_ptr += bytes_read; |
19211 | break; | |
41144253 | 19212 | case DW_FORM_loclistx: |
19213 | { | |
19214 | *need_reprocess = true; | |
19215 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19216 | info_ptr += bytes_read; | |
19217 | } | |
19218 | break; | |
c906108c | 19219 | case DW_FORM_string: |
9b1c24c8 | 19220 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19221 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19222 | info_ptr += bytes_read; |
19223 | break; | |
4bdf3d34 | 19224 | case DW_FORM_strp: |
36586728 TT |
19225 | if (!cu->per_cu->is_dwz) |
19226 | { | |
976ca316 | 19227 | DW_STRING (attr) = read_indirect_string (per_objfile, |
ed2dc618 | 19228 | abfd, info_ptr, cu_header, |
36586728 TT |
19229 | &bytes_read); |
19230 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19231 | info_ptr += bytes_read; | |
19232 | break; | |
19233 | } | |
19234 | /* FALLTHROUGH */ | |
43988095 JK |
19235 | case DW_FORM_line_strp: |
19236 | if (!cu->per_cu->is_dwz) | |
19237 | { | |
976ca316 SM |
19238 | DW_STRING (attr) = per_objfile->read_line_string (info_ptr, cu_header, |
19239 | &bytes_read); | |
43988095 JK |
19240 | DW_STRING_IS_CANONICAL (attr) = 0; |
19241 | info_ptr += bytes_read; | |
19242 | break; | |
19243 | } | |
19244 | /* FALLTHROUGH */ | |
36586728 TT |
19245 | case DW_FORM_GNU_strp_alt: |
19246 | { | |
976ca316 | 19247 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
8266302d TT |
19248 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
19249 | &bytes_read); | |
36586728 | 19250 | |
0314b390 | 19251 | DW_STRING (attr) = dwz->read_string (objfile, str_offset); |
36586728 TT |
19252 | DW_STRING_IS_CANONICAL (attr) = 0; |
19253 | info_ptr += bytes_read; | |
19254 | } | |
4bdf3d34 | 19255 | break; |
2dc7f7b3 | 19256 | case DW_FORM_exprloc: |
c906108c | 19257 | case DW_FORM_block: |
7b5a2f43 | 19258 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19259 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19260 | info_ptr += bytes_read; | |
19261 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19262 | info_ptr += blk->size; | |
19263 | DW_BLOCK (attr) = blk; | |
19264 | break; | |
19265 | case DW_FORM_block1: | |
7b5a2f43 | 19266 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19267 | blk->size = read_1_byte (abfd, info_ptr); |
19268 | info_ptr += 1; | |
19269 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19270 | info_ptr += blk->size; | |
19271 | DW_BLOCK (attr) = blk; | |
19272 | break; | |
19273 | case DW_FORM_data1: | |
19274 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19275 | info_ptr += 1; | |
19276 | break; | |
19277 | case DW_FORM_flag: | |
19278 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19279 | info_ptr += 1; | |
19280 | break; | |
2dc7f7b3 TT |
19281 | case DW_FORM_flag_present: |
19282 | DW_UNSND (attr) = 1; | |
19283 | break; | |
c906108c SS |
19284 | case DW_FORM_sdata: |
19285 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19286 | info_ptr += bytes_read; | |
19287 | break; | |
19288 | case DW_FORM_udata: | |
18a8505e | 19289 | case DW_FORM_rnglistx: |
c906108c SS |
19290 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19291 | info_ptr += bytes_read; | |
19292 | break; | |
19293 | case DW_FORM_ref1: | |
9c541725 | 19294 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19295 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19296 | info_ptr += 1; |
19297 | break; | |
19298 | case DW_FORM_ref2: | |
9c541725 | 19299 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19300 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19301 | info_ptr += 2; |
19302 | break; | |
19303 | case DW_FORM_ref4: | |
9c541725 | 19304 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19305 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19306 | info_ptr += 4; |
19307 | break; | |
613e1657 | 19308 | case DW_FORM_ref8: |
9c541725 | 19309 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19310 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19311 | info_ptr += 8; |
19312 | break; | |
55f1336d | 19313 | case DW_FORM_ref_sig8: |
ac9ec31b | 19314 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19315 | info_ptr += 8; |
19316 | break; | |
c906108c | 19317 | case DW_FORM_ref_udata: |
9c541725 | 19318 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19319 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19320 | info_ptr += bytes_read; |
19321 | break; | |
c906108c | 19322 | case DW_FORM_indirect: |
a8329558 KW |
19323 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19324 | info_ptr += bytes_read; | |
43988095 JK |
19325 | if (form == DW_FORM_implicit_const) |
19326 | { | |
19327 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19328 | info_ptr += bytes_read; | |
19329 | } | |
19330 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19331 | info_ptr, need_reprocess); |
43988095 JK |
19332 | break; |
19333 | case DW_FORM_implicit_const: | |
19334 | DW_SND (attr) = implicit_const; | |
a8329558 | 19335 | break; |
336d760d | 19336 | case DW_FORM_addrx: |
3019eac3 | 19337 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19338 | *need_reprocess = true; |
19339 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19340 | info_ptr += bytes_read; |
19341 | break; | |
cf532bd1 | 19342 | case DW_FORM_strx: |
15f18d14 AT |
19343 | case DW_FORM_strx1: |
19344 | case DW_FORM_strx2: | |
19345 | case DW_FORM_strx3: | |
19346 | case DW_FORM_strx4: | |
3019eac3 | 19347 | case DW_FORM_GNU_str_index: |
3019eac3 | 19348 | { |
15f18d14 AT |
19349 | ULONGEST str_index; |
19350 | if (form == DW_FORM_strx1) | |
19351 | { | |
19352 | str_index = read_1_byte (abfd, info_ptr); | |
19353 | info_ptr += 1; | |
19354 | } | |
19355 | else if (form == DW_FORM_strx2) | |
19356 | { | |
19357 | str_index = read_2_bytes (abfd, info_ptr); | |
19358 | info_ptr += 2; | |
19359 | } | |
19360 | else if (form == DW_FORM_strx3) | |
19361 | { | |
19362 | str_index = read_3_bytes (abfd, info_ptr); | |
19363 | info_ptr += 3; | |
19364 | } | |
19365 | else if (form == DW_FORM_strx4) | |
19366 | { | |
19367 | str_index = read_4_bytes (abfd, info_ptr); | |
19368 | info_ptr += 4; | |
19369 | } | |
19370 | else | |
19371 | { | |
19372 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19373 | info_ptr += bytes_read; | |
19374 | } | |
18a8505e AT |
19375 | *need_reprocess = true; |
19376 | DW_UNSND (attr) = str_index; | |
19377 | } | |
3019eac3 | 19378 | break; |
c906108c | 19379 | default: |
8a3fe4f8 | 19380 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19381 | dwarf_form_name (form), |
19382 | bfd_get_filename (abfd)); | |
c906108c | 19383 | } |
28e94949 | 19384 | |
36586728 | 19385 | /* Super hack. */ |
cd6c91b4 | 19386 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
19387 | attr->form = DW_FORM_GNU_ref_alt; |
19388 | ||
28e94949 JB |
19389 | /* We have seen instances where the compiler tried to emit a byte |
19390 | size attribute of -1 which ended up being encoded as an unsigned | |
19391 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19392 | an object of this size seems pretty unlikely so we can relatively | |
19393 | safely treat these cases as if the size attribute was invalid and | |
19394 | treat them as zero by default. */ | |
19395 | if (attr->name == DW_AT_byte_size | |
19396 | && form == DW_FORM_data4 | |
19397 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19398 | { |
19399 | complaint | |
b98664d3 | 19400 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19401 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19402 | DW_UNSND (attr) = 0; |
19403 | } | |
28e94949 | 19404 | |
c906108c SS |
19405 | return info_ptr; |
19406 | } | |
19407 | ||
a8329558 KW |
19408 | /* Read an attribute described by an abbreviated attribute. */ |
19409 | ||
d521ce57 | 19410 | static const gdb_byte * |
dee91e82 DE |
19411 | read_attribute (const struct die_reader_specs *reader, |
19412 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19413 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19414 | { |
19415 | attr->name = abbrev->name; | |
43988095 | 19416 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19417 | abbrev->implicit_const, info_ptr, |
19418 | need_reprocess); | |
a8329558 KW |
19419 | } |
19420 | ||
43988095 JK |
19421 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
19422 | ||
19423 | static const char * | |
976ca316 | 19424 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 19425 | LONGEST str_offset) |
43988095 | 19426 | { |
976ca316 SM |
19427 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
19428 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
19429 | } |
19430 | ||
43988095 JK |
19431 | /* Return pointer to string at .debug_str offset as read from BUF. |
19432 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19433 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19434 | ||
d521ce57 | 19435 | static const char * |
976ca316 | 19436 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 19437 | const gdb_byte *buf, |
cf2c3c16 TT |
19438 | const struct comp_unit_head *cu_header, |
19439 | unsigned int *bytes_read_ptr) | |
19440 | { | |
8266302d | 19441 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 19442 | |
976ca316 | 19443 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
19444 | } |
19445 | ||
86c0bb4c | 19446 | /* See read.h. */ |
43988095 | 19447 | |
86c0bb4c TT |
19448 | const char * |
19449 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
19450 | const struct comp_unit_head *cu_header, |
19451 | unsigned int *bytes_read_ptr) | |
43988095 | 19452 | { |
86c0bb4c | 19453 | bfd *abfd = objfile->obfd; |
8266302d | 19454 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 19455 | |
5989a64e | 19456 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
19457 | } |
19458 | ||
3019eac3 | 19459 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 19460 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
19461 | ADDR_SIZE is the size of addresses from the CU header. */ |
19462 | ||
19463 | static CORE_ADDR | |
976ca316 SM |
19464 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
19465 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 19466 | { |
976ca316 | 19467 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
19468 | bfd *abfd = objfile->obfd; |
19469 | const gdb_byte *info_ptr; | |
18a8505e | 19470 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 19471 | |
976ca316 SM |
19472 | per_objfile->per_bfd->addr.read (objfile); |
19473 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 19474 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 19475 | objfile_name (objfile)); |
18a8505e | 19476 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 19477 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
19478 | error (_("DW_FORM_addr_index pointing outside of " |
19479 | ".debug_addr section [in module %s]"), | |
4262abfb | 19480 | objfile_name (objfile)); |
976ca316 SM |
19481 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
19482 | + addr_index * addr_size); | |
3019eac3 DE |
19483 | if (addr_size == 4) |
19484 | return bfd_get_32 (abfd, info_ptr); | |
19485 | else | |
19486 | return bfd_get_64 (abfd, info_ptr); | |
19487 | } | |
19488 | ||
19489 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19490 | ||
19491 | static CORE_ADDR | |
19492 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19493 | { | |
5e22e966 | 19494 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 19495 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
19496 | } |
19497 | ||
19498 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19499 | ||
19500 | static CORE_ADDR | |
d521ce57 | 19501 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19502 | unsigned int *bytes_read) |
19503 | { | |
5e22e966 | 19504 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
19505 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19506 | ||
19507 | return read_addr_index (cu, addr_index); | |
19508 | } | |
19509 | ||
450a1bfc | 19510 | /* See read.h. */ |
3019eac3 DE |
19511 | |
19512 | CORE_ADDR | |
82ca3f51 | 19513 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 19514 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 19515 | unsigned int addr_index) |
3019eac3 | 19516 | { |
976ca316 | 19517 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 19518 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
19519 | int addr_size; |
19520 | ||
3019eac3 DE |
19521 | /* We need addr_base and addr_size. |
19522 | If we don't have PER_CU->cu, we have to get it. | |
19523 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19524 | which at this point doesn't seem justified: it's not clear how frequently | |
19525 | it would get used and it would increase the size of every PER_CU. | |
19526 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19527 | so we're not in uncharted territory here. | |
19528 | Alas we need to be a bit more complicated as addr_base is contained | |
19529 | in the DIE. | |
19530 | ||
19531 | We don't need to read the entire CU(/TU). | |
19532 | We just need the header and top level die. | |
a1b64ce1 | 19533 | |
3019eac3 | 19534 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19535 | For now we skip this optimization. */ |
3019eac3 DE |
19536 | |
19537 | if (cu != NULL) | |
19538 | { | |
19539 | addr_base = cu->addr_base; | |
19540 | addr_size = cu->header.addr_size; | |
19541 | } | |
19542 | else | |
19543 | { | |
976ca316 | 19544 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
19545 | addr_base = reader.cu->addr_base; |
19546 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
19547 | } |
19548 | ||
976ca316 | 19549 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
19550 | } |
19551 | ||
18a8505e AT |
19552 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
19553 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
19554 | DWO file. */ | |
3019eac3 | 19555 | |
d521ce57 | 19556 | static const char * |
18a8505e AT |
19557 | read_str_index (struct dwarf2_cu *cu, |
19558 | struct dwarf2_section_info *str_section, | |
19559 | struct dwarf2_section_info *str_offsets_section, | |
19560 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 19561 | { |
976ca316 SM |
19562 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19563 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 19564 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19565 | bfd *abfd = objfile->obfd; |
d521ce57 | 19566 | const gdb_byte *info_ptr; |
3019eac3 | 19567 | ULONGEST str_offset; |
cf532bd1 | 19568 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 19569 | |
96b79293 TT |
19570 | str_section->read (objfile); |
19571 | str_offsets_section->read (objfile); | |
73869dc2 | 19572 | if (str_section->buffer == NULL) |
18a8505e | 19573 | error (_("%s used without %s section" |
9d8780f0 | 19574 | " in CU at offset %s [in module %s]"), |
96b79293 | 19575 | form_name, str_section->get_name (), |
18a8505e | 19576 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19577 | if (str_offsets_section->buffer == NULL) |
18a8505e | 19578 | error (_("%s used without %s section" |
9d8780f0 | 19579 | " in CU at offset %s [in module %s]"), |
96b79293 | 19580 | form_name, str_section->get_name (), |
18a8505e | 19581 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19582 | info_ptr = (str_offsets_section->buffer |
18a8505e | 19583 | + str_offsets_base |
3019eac3 DE |
19584 | + str_index * cu->header.offset_size); |
19585 | if (cu->header.offset_size == 4) | |
19586 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19587 | else | |
19588 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19589 | if (str_offset >= str_section->size) |
57d63ce2 | 19590 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19591 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19592 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19593 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19594 | } |
19595 | ||
18a8505e AT |
19596 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
19597 | ||
19598 | static const char * | |
19599 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
19600 | { | |
19601 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
19602 | ? reader->cu->header.addr_size : 0; | |
19603 | return read_str_index (reader->cu, | |
19604 | &reader->dwo_file->sections.str, | |
19605 | &reader->dwo_file->sections.str_offsets, | |
19606 | str_offsets_base, str_index); | |
19607 | } | |
19608 | ||
19609 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
19610 | ||
19611 | static const char * | |
19612 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
19613 | { | |
5e22e966 | 19614 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
19615 | const char *objf_name = objfile_name (objfile); |
19616 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
19617 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
19618 | ||
19619 | if (!cu->str_offsets_base.has_value ()) | |
19620 | error (_("%s used in Fission stub without %s" | |
19621 | " in CU at offset 0x%lx [in module %s]"), | |
19622 | form_name, str_offsets_attr_name, | |
19623 | (long) cu->header.offset_size, objf_name); | |
19624 | ||
19625 | return read_str_index (cu, | |
5e22e966 SM |
19626 | &cu->per_objfile->per_bfd->str, |
19627 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
19628 | *cu->str_offsets_base, str_index); |
19629 | } | |
19630 | ||
3019eac3 DE |
19631 | /* Return the length of an LEB128 number in BUF. */ |
19632 | ||
19633 | static int | |
19634 | leb128_size (const gdb_byte *buf) | |
19635 | { | |
19636 | const gdb_byte *begin = buf; | |
19637 | gdb_byte byte; | |
19638 | ||
19639 | while (1) | |
19640 | { | |
19641 | byte = *buf++; | |
19642 | if ((byte & 128) == 0) | |
19643 | return buf - begin; | |
19644 | } | |
19645 | } | |
19646 | ||
c906108c | 19647 | static void |
e142c38c | 19648 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19649 | { |
19650 | switch (lang) | |
19651 | { | |
19652 | case DW_LANG_C89: | |
76bee0cc | 19653 | case DW_LANG_C99: |
0cfd832f | 19654 | case DW_LANG_C11: |
c906108c | 19655 | case DW_LANG_C: |
d1be3247 | 19656 | case DW_LANG_UPC: |
e142c38c | 19657 | cu->language = language_c; |
c906108c | 19658 | break; |
9c37b5ae | 19659 | case DW_LANG_Java: |
c906108c | 19660 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19661 | case DW_LANG_C_plus_plus_11: |
19662 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19663 | cu->language = language_cplus; |
c906108c | 19664 | break; |
6aecb9c2 JB |
19665 | case DW_LANG_D: |
19666 | cu->language = language_d; | |
19667 | break; | |
c906108c SS |
19668 | case DW_LANG_Fortran77: |
19669 | case DW_LANG_Fortran90: | |
b21b22e0 | 19670 | case DW_LANG_Fortran95: |
f7de9aab MW |
19671 | case DW_LANG_Fortran03: |
19672 | case DW_LANG_Fortran08: | |
e142c38c | 19673 | cu->language = language_fortran; |
c906108c | 19674 | break; |
a766d390 DE |
19675 | case DW_LANG_Go: |
19676 | cu->language = language_go; | |
19677 | break; | |
c906108c | 19678 | case DW_LANG_Mips_Assembler: |
e142c38c | 19679 | cu->language = language_asm; |
c906108c SS |
19680 | break; |
19681 | case DW_LANG_Ada83: | |
8aaf0b47 | 19682 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19683 | cu->language = language_ada; |
19684 | break; | |
72019c9c GM |
19685 | case DW_LANG_Modula2: |
19686 | cu->language = language_m2; | |
19687 | break; | |
fe8e67fd PM |
19688 | case DW_LANG_Pascal83: |
19689 | cu->language = language_pascal; | |
19690 | break; | |
22566fbd DJ |
19691 | case DW_LANG_ObjC: |
19692 | cu->language = language_objc; | |
19693 | break; | |
c44af4eb TT |
19694 | case DW_LANG_Rust: |
19695 | case DW_LANG_Rust_old: | |
19696 | cu->language = language_rust; | |
19697 | break; | |
c906108c SS |
19698 | case DW_LANG_Cobol74: |
19699 | case DW_LANG_Cobol85: | |
c906108c | 19700 | default: |
e142c38c | 19701 | cu->language = language_minimal; |
c906108c SS |
19702 | break; |
19703 | } | |
e142c38c | 19704 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19705 | } |
19706 | ||
19707 | /* Return the named attribute or NULL if not there. */ | |
19708 | ||
19709 | static struct attribute * | |
e142c38c | 19710 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19711 | { |
a48e046c | 19712 | for (;;) |
c906108c | 19713 | { |
a48e046c TT |
19714 | unsigned int i; |
19715 | struct attribute *spec = NULL; | |
19716 | ||
19717 | for (i = 0; i < die->num_attrs; ++i) | |
19718 | { | |
19719 | if (die->attrs[i].name == name) | |
19720 | return &die->attrs[i]; | |
19721 | if (die->attrs[i].name == DW_AT_specification | |
19722 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19723 | spec = &die->attrs[i]; | |
19724 | } | |
19725 | ||
19726 | if (!spec) | |
19727 | break; | |
c906108c | 19728 | |
f2f0e013 | 19729 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19730 | } |
c5aa993b | 19731 | |
c906108c SS |
19732 | return NULL; |
19733 | } | |
19734 | ||
7d45c7c3 KB |
19735 | /* Return the string associated with a string-typed attribute, or NULL if it |
19736 | is either not found or is of an incorrect type. */ | |
19737 | ||
19738 | static const char * | |
19739 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19740 | { | |
19741 | struct attribute *attr; | |
19742 | const char *str = NULL; | |
19743 | ||
19744 | attr = dwarf2_attr (die, name, cu); | |
19745 | ||
19746 | if (attr != NULL) | |
19747 | { | |
e61108c9 TT |
19748 | str = attr->value_as_string (); |
19749 | if (str == nullptr) | |
b98664d3 | 19750 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19751 | "DIE at %s in module %s"), |
19752 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 19753 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
19754 | } |
19755 | ||
19756 | return str; | |
19757 | } | |
19758 | ||
a084a2a6 | 19759 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19760 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19761 | static const char * |
19762 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19763 | { | |
19764 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19765 | if (dwo_name == nullptr) | |
19766 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19767 | return dwo_name; | |
19768 | } | |
19769 | ||
05cf31d1 JB |
19770 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19771 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19772 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19773 | |
19774 | static int | |
19775 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19776 | { | |
19777 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19778 | ||
19779 | return (attr && DW_UNSND (attr)); | |
19780 | } | |
19781 | ||
3ca72b44 | 19782 | static int |
e142c38c | 19783 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19784 | { |
05cf31d1 JB |
19785 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19786 | which value is non-zero. However, we have to be careful with | |
19787 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19788 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19789 | end up accidently finding a declaration attribute that belongs | |
19790 | to a different DIE referenced by the specification attribute, | |
19791 | even though the given DIE does not have a declaration attribute. */ | |
19792 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19793 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19794 | } |
19795 | ||
63d06c5c | 19796 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19797 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19798 | containing the return value on output. If there is no |
19799 | specification, but there is an abstract origin, that is | |
19800 | returned. */ | |
63d06c5c DC |
19801 | |
19802 | static struct die_info * | |
f2f0e013 | 19803 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19804 | { |
f2f0e013 DJ |
19805 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19806 | *spec_cu); | |
63d06c5c | 19807 | |
edb3359d DJ |
19808 | if (spec_attr == NULL) |
19809 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19810 | ||
63d06c5c DC |
19811 | if (spec_attr == NULL) |
19812 | return NULL; | |
19813 | else | |
f2f0e013 | 19814 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19815 | } |
c906108c | 19816 | |
527f3840 JK |
19817 | /* Stub for free_line_header to match void * callback types. */ |
19818 | ||
19819 | static void | |
19820 | free_line_header_voidp (void *arg) | |
19821 | { | |
9a3c8263 | 19822 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19823 | |
fff8551c | 19824 | delete lh; |
527f3840 JK |
19825 | } |
19826 | ||
83769d0b | 19827 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19828 | |
19829 | static struct dwarf2_section_info * | |
19830 | get_debug_line_section (struct dwarf2_cu *cu) | |
19831 | { | |
19832 | struct dwarf2_section_info *section; | |
976ca316 | 19833 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
19834 | |
19835 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19836 | DWO file. */ | |
19837 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19838 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19839 | else if (cu->per_cu->is_dwz) | |
19840 | { | |
976ca316 | 19841 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
36586728 TT |
19842 | |
19843 | section = &dwz->line; | |
19844 | } | |
19845 | else | |
976ca316 | 19846 | section = &per_objfile->per_bfd->line; |
36586728 TT |
19847 | |
19848 | return section; | |
19849 | } | |
19850 | ||
debd256d | 19851 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 19852 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 19853 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
19854 | Returns NULL if there is a problem reading the header, e.g., if it |
19855 | has a version we don't understand. | |
debd256d JB |
19856 | |
19857 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
19858 | the returned object point into the dwarf line section buffer, |
19859 | and must not be freed. */ | |
ae2de4f8 | 19860 | |
fff8551c | 19861 | static line_header_up |
9c541725 | 19862 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 19863 | { |
3019eac3 | 19864 | struct dwarf2_section_info *section; |
976ca316 | 19865 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 19866 | |
36586728 | 19867 | section = get_debug_line_section (cu); |
976ca316 | 19868 | section->read (per_objfile->objfile); |
3019eac3 | 19869 | if (section->buffer == NULL) |
debd256d | 19870 | { |
3019eac3 | 19871 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 19872 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 19873 | else |
b98664d3 | 19874 | complaint (_("missing .debug_line section")); |
debd256d JB |
19875 | return 0; |
19876 | } | |
19877 | ||
0df7ad3a | 19878 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 19879 | per_objfile, section, &cu->header); |
debd256d | 19880 | } |
c906108c | 19881 | |
c6da4cef | 19882 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 19883 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 19884 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
19885 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
19886 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 19887 | |
d521ce57 | 19888 | static const char * |
7ba99d21 | 19889 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 19890 | const dwarf2_psymtab *pst, |
c89b44cd TT |
19891 | const char *comp_dir, |
19892 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 19893 | { |
d521ce57 TT |
19894 | const char *include_name = fe.name; |
19895 | const char *include_name_to_compare = include_name; | |
72b9f47f | 19896 | const char *pst_filename; |
c6da4cef DE |
19897 | int file_is_pst; |
19898 | ||
8c43009f | 19899 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 19900 | |
c89b44cd | 19901 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
19902 | if (!IS_ABSOLUTE_PATH (include_name) |
19903 | && (dir_name != NULL || comp_dir != NULL)) | |
19904 | { | |
19905 | /* Avoid creating a duplicate psymtab for PST. | |
19906 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
19907 | Before we do the comparison, however, we need to account | |
19908 | for DIR_NAME and COMP_DIR. | |
19909 | First prepend dir_name (if non-NULL). If we still don't | |
19910 | have an absolute path prepend comp_dir (if non-NULL). | |
19911 | However, the directory we record in the include-file's | |
19912 | psymtab does not contain COMP_DIR (to match the | |
19913 | corresponding symtab(s)). | |
19914 | ||
19915 | Example: | |
19916 | ||
19917 | bash$ cd /tmp | |
19918 | bash$ gcc -g ./hello.c | |
19919 | include_name = "hello.c" | |
19920 | dir_name = "." | |
19921 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
19922 | DW_AT_name = "./hello.c" |
19923 | ||
19924 | */ | |
c6da4cef DE |
19925 | |
19926 | if (dir_name != NULL) | |
19927 | { | |
c89b44cd TT |
19928 | name_holder->reset (concat (dir_name, SLASH_STRING, |
19929 | include_name, (char *) NULL)); | |
19930 | include_name = name_holder->get (); | |
c6da4cef | 19931 | include_name_to_compare = include_name; |
c6da4cef DE |
19932 | } |
19933 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
19934 | { | |
c89b44cd TT |
19935 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
19936 | include_name, (char *) NULL)); | |
19937 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
19938 | } |
19939 | } | |
19940 | ||
19941 | pst_filename = pst->filename; | |
c89b44cd | 19942 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
19943 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
19944 | { | |
c89b44cd TT |
19945 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
19946 | pst_filename, (char *) NULL)); | |
19947 | pst_filename = copied_name.get (); | |
c6da4cef DE |
19948 | } |
19949 | ||
1e3fad37 | 19950 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 19951 | |
c6da4cef DE |
19952 | if (file_is_pst) |
19953 | return NULL; | |
19954 | return include_name; | |
19955 | } | |
19956 | ||
d9b3de22 DE |
19957 | /* State machine to track the state of the line number program. */ |
19958 | ||
6f77053d | 19959 | class lnp_state_machine |
d9b3de22 | 19960 | { |
6f77053d PA |
19961 | public: |
19962 | /* Initialize a machine state for the start of a line number | |
19963 | program. */ | |
804d2729 TT |
19964 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
19965 | bool record_lines_p); | |
6f77053d | 19966 | |
8c43009f PA |
19967 | file_entry *current_file () |
19968 | { | |
19969 | /* lh->file_names is 0-based, but the file name numbers in the | |
19970 | statement program are 1-based. */ | |
6f77053d PA |
19971 | return m_line_header->file_name_at (m_file); |
19972 | } | |
19973 | ||
19974 | /* Record the line in the state machine. END_SEQUENCE is true if | |
19975 | we're processing the end of a sequence. */ | |
19976 | void record_line (bool end_sequence); | |
19977 | ||
7ab6656f OJ |
19978 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
19979 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
19980 | void check_line_address (struct dwarf2_cu *cu, |
19981 | const gdb_byte *line_ptr, | |
7ab6656f | 19982 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
19983 | |
19984 | void handle_set_discriminator (unsigned int discriminator) | |
19985 | { | |
19986 | m_discriminator = discriminator; | |
19987 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
19988 | } | |
19989 | ||
19990 | /* Handle DW_LNE_set_address. */ | |
19991 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
19992 | { | |
19993 | m_op_index = 0; | |
19994 | address += baseaddr; | |
19995 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
19996 | } | |
19997 | ||
19998 | /* Handle DW_LNS_advance_pc. */ | |
19999 | void handle_advance_pc (CORE_ADDR adjust); | |
20000 | ||
20001 | /* Handle a special opcode. */ | |
20002 | void handle_special_opcode (unsigned char op_code); | |
20003 | ||
20004 | /* Handle DW_LNS_advance_line. */ | |
20005 | void handle_advance_line (int line_delta) | |
20006 | { | |
20007 | advance_line (line_delta); | |
20008 | } | |
20009 | ||
20010 | /* Handle DW_LNS_set_file. */ | |
20011 | void handle_set_file (file_name_index file); | |
20012 | ||
20013 | /* Handle DW_LNS_negate_stmt. */ | |
20014 | void handle_negate_stmt () | |
20015 | { | |
20016 | m_is_stmt = !m_is_stmt; | |
20017 | } | |
20018 | ||
20019 | /* Handle DW_LNS_const_add_pc. */ | |
20020 | void handle_const_add_pc (); | |
20021 | ||
20022 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20023 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20024 | { | |
20025 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20026 | m_op_index = 0; | |
20027 | } | |
20028 | ||
20029 | /* Handle DW_LNS_copy. */ | |
20030 | void handle_copy () | |
20031 | { | |
20032 | record_line (false); | |
20033 | m_discriminator = 0; | |
20034 | } | |
20035 | ||
20036 | /* Handle DW_LNE_end_sequence. */ | |
20037 | void handle_end_sequence () | |
20038 | { | |
804d2729 | 20039 | m_currently_recording_lines = true; |
6f77053d PA |
20040 | } |
20041 | ||
20042 | private: | |
20043 | /* Advance the line by LINE_DELTA. */ | |
20044 | void advance_line (int line_delta) | |
20045 | { | |
20046 | m_line += line_delta; | |
20047 | ||
20048 | if (line_delta != 0) | |
20049 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20050 | } |
20051 | ||
804d2729 TT |
20052 | struct dwarf2_cu *m_cu; |
20053 | ||
6f77053d PA |
20054 | gdbarch *m_gdbarch; |
20055 | ||
20056 | /* True if we're recording lines. | |
20057 | Otherwise we're building partial symtabs and are just interested in | |
20058 | finding include files mentioned by the line number program. */ | |
20059 | bool m_record_lines_p; | |
20060 | ||
8c43009f | 20061 | /* The line number header. */ |
6f77053d | 20062 | line_header *m_line_header; |
8c43009f | 20063 | |
6f77053d PA |
20064 | /* These are part of the standard DWARF line number state machine, |
20065 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20066 | |
6f77053d | 20067 | unsigned char m_op_index = 0; |
7ba99d21 AT |
20068 | /* The line table index of the current file. */ |
20069 | file_name_index m_file = 1; | |
6f77053d PA |
20070 | unsigned int m_line = 1; |
20071 | ||
20072 | /* These are initialized in the constructor. */ | |
20073 | ||
20074 | CORE_ADDR m_address; | |
20075 | bool m_is_stmt; | |
20076 | unsigned int m_discriminator; | |
d9b3de22 DE |
20077 | |
20078 | /* Additional bits of state we need to track. */ | |
20079 | ||
20080 | /* The last file that we called dwarf2_start_subfile for. | |
20081 | This is only used for TLLs. */ | |
6f77053d | 20082 | unsigned int m_last_file = 0; |
d9b3de22 | 20083 | /* The last file a line number was recorded for. */ |
6f77053d | 20084 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20085 | |
1313c56e AB |
20086 | /* The address of the last line entry. */ |
20087 | CORE_ADDR m_last_address; | |
20088 | ||
20089 | /* Set to true when a previous line at the same address (using | |
20090 | m_last_address) had m_is_stmt true. This is reset to false when a | |
20091 | line entry at a new address (m_address different to m_last_address) is | |
20092 | processed. */ | |
20093 | bool m_stmt_at_address = false; | |
20094 | ||
804d2729 TT |
20095 | /* When true, record the lines we decode. */ |
20096 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20097 | |
20098 | /* The last line number that was recorded, used to coalesce | |
20099 | consecutive entries for the same line. This can happen, for | |
20100 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20101 | unsigned int m_last_line = 0; |
20102 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20103 | }; |
d9b3de22 | 20104 | |
6f77053d PA |
20105 | void |
20106 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20107 | { | |
20108 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20109 | / m_line_header->maximum_ops_per_instruction) | |
20110 | * m_line_header->minimum_instruction_length); | |
20111 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20112 | m_op_index = ((m_op_index + adjust) | |
20113 | % m_line_header->maximum_ops_per_instruction); | |
20114 | } | |
d9b3de22 | 20115 | |
6f77053d PA |
20116 | void |
20117 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20118 | { |
6f77053d | 20119 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
20120 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
20121 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
20122 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
20123 | / m_line_header->maximum_ops_per_instruction) |
20124 | * m_line_header->minimum_instruction_length); | |
20125 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 20126 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 20127 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 20128 | |
258bf0ee | 20129 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
20130 | advance_line (line_delta); |
20131 | record_line (false); | |
20132 | m_discriminator = 0; | |
20133 | } | |
d9b3de22 | 20134 | |
6f77053d PA |
20135 | void |
20136 | lnp_state_machine::handle_set_file (file_name_index file) | |
20137 | { | |
20138 | m_file = file; | |
20139 | ||
20140 | const file_entry *fe = current_file (); | |
20141 | if (fe == NULL) | |
20142 | dwarf2_debug_line_missing_file_complaint (); | |
20143 | else if (m_record_lines_p) | |
20144 | { | |
20145 | const char *dir = fe->include_dir (m_line_header); | |
20146 | ||
c24bdb02 | 20147 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20148 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20149 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20150 | } |
20151 | } | |
20152 | ||
20153 | void | |
20154 | lnp_state_machine::handle_const_add_pc () | |
20155 | { | |
20156 | CORE_ADDR adjust | |
20157 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20158 | ||
20159 | CORE_ADDR addr_adj | |
20160 | = (((m_op_index + adjust) | |
20161 | / m_line_header->maximum_ops_per_instruction) | |
20162 | * m_line_header->minimum_instruction_length); | |
20163 | ||
20164 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20165 | m_op_index = ((m_op_index + adjust) | |
20166 | % m_line_header->maximum_ops_per_instruction); | |
20167 | } | |
d9b3de22 | 20168 | |
a05a36a5 DE |
20169 | /* Return non-zero if we should add LINE to the line number table. |
20170 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20171 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20172 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20173 | had a non-zero discriminator. | |
20174 | ||
20175 | We have to be careful in the presence of discriminators. | |
20176 | E.g., for this line: | |
20177 | ||
20178 | for (i = 0; i < 100000; i++); | |
20179 | ||
20180 | clang can emit four line number entries for that one line, | |
20181 | each with a different discriminator. | |
20182 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20183 | ||
20184 | However, we want gdb to coalesce all four entries into one. | |
20185 | Otherwise the user could stepi into the middle of the line and | |
20186 | gdb would get confused about whether the pc really was in the | |
20187 | middle of the line. | |
20188 | ||
20189 | Things are further complicated by the fact that two consecutive | |
20190 | line number entries for the same line is a heuristic used by gcc | |
20191 | to denote the end of the prologue. So we can't just discard duplicate | |
20192 | entries, we have to be selective about it. The heuristic we use is | |
20193 | that we only collapse consecutive entries for the same line if at least | |
20194 | one of those entries has a non-zero discriminator. PR 17276. | |
20195 | ||
20196 | Note: Addresses in the line number state machine can never go backwards | |
20197 | within one sequence, thus this coalescing is ok. */ | |
20198 | ||
20199 | static int | |
804d2729 TT |
20200 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20201 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20202 | int line_has_non_zero_discriminator, |
20203 | struct subfile *last_subfile) | |
20204 | { | |
c24bdb02 | 20205 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20206 | return 1; |
20207 | if (line != last_line) | |
20208 | return 1; | |
20209 | /* Same line for the same file that we've seen already. | |
20210 | As a last check, for pr 17276, only record the line if the line | |
20211 | has never had a non-zero discriminator. */ | |
20212 | if (!line_has_non_zero_discriminator) | |
20213 | return 1; | |
20214 | return 0; | |
20215 | } | |
20216 | ||
804d2729 TT |
20217 | /* Use the CU's builder to record line number LINE beginning at |
20218 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20219 | |
20220 | static void | |
d9b3de22 | 20221 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 20222 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 20223 | struct dwarf2_cu *cu) |
252a6764 DE |
20224 | { |
20225 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20226 | ||
27e0867f DE |
20227 | if (dwarf_line_debug) |
20228 | { | |
20229 | fprintf_unfiltered (gdb_stdlog, | |
20230 | "Recording line %u, file %s, address %s\n", | |
20231 | line, lbasename (subfile->name), | |
20232 | paddress (gdbarch, address)); | |
20233 | } | |
20234 | ||
804d2729 | 20235 | if (cu != nullptr) |
8c95582d | 20236 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
20237 | } |
20238 | ||
20239 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20240 | Mark the end of a set of line number records. | |
d9b3de22 | 20241 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20242 | If SUBFILE is NULL the request is ignored. */ |
20243 | ||
20244 | static void | |
20245 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20246 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20247 | { |
27e0867f DE |
20248 | if (subfile == NULL) |
20249 | return; | |
20250 | ||
20251 | if (dwarf_line_debug) | |
20252 | { | |
20253 | fprintf_unfiltered (gdb_stdlog, | |
20254 | "Finishing current line, file %s, address %s\n", | |
20255 | lbasename (subfile->name), | |
20256 | paddress (gdbarch, address)); | |
20257 | } | |
20258 | ||
8c95582d | 20259 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
20260 | } |
20261 | ||
6f77053d PA |
20262 | void |
20263 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20264 | { |
d9b3de22 DE |
20265 | if (dwarf_line_debug) |
20266 | { | |
20267 | fprintf_unfiltered (gdb_stdlog, | |
20268 | "Processing actual line %u: file %u," | |
94a72be7 | 20269 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 20270 | m_line, m_file, |
6f77053d | 20271 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
20272 | m_is_stmt, m_discriminator, |
20273 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
20274 | } |
20275 | ||
6f77053d | 20276 | file_entry *fe = current_file (); |
8c43009f PA |
20277 | |
20278 | if (fe == NULL) | |
d9b3de22 DE |
20279 | dwarf2_debug_line_missing_file_complaint (); |
20280 | /* For now we ignore lines not starting on an instruction boundary. | |
20281 | But not when processing end_sequence for compatibility with the | |
20282 | previous version of the code. */ | |
6f77053d | 20283 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20284 | { |
8c43009f | 20285 | fe->included_p = 1; |
8c95582d | 20286 | if (m_record_lines_p) |
d9b3de22 | 20287 | { |
1313c56e AB |
20288 | /* When we switch files we insert an end maker in the first file, |
20289 | switch to the second file and add a new line entry. The | |
20290 | problem is that the end marker inserted in the first file will | |
20291 | discard any previous line entries at the same address. If the | |
20292 | line entries in the first file are marked as is-stmt, while | |
20293 | the new line in the second file is non-stmt, then this means | |
20294 | the end marker will discard is-stmt lines so we can have a | |
20295 | non-stmt line. This means that there are less addresses at | |
20296 | which the user can insert a breakpoint. | |
20297 | ||
20298 | To improve this we track the last address in m_last_address, | |
20299 | and whether we have seen an is-stmt at this address. Then | |
20300 | when switching files, if we have seen a stmt at the current | |
20301 | address, and we are switching to create a non-stmt line, then | |
20302 | discard the new line. */ | |
20303 | bool file_changed | |
20304 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
20305 | bool ignore_this_line | |
20306 | = (file_changed && !end_sequence && m_last_address == m_address | |
20307 | && !m_is_stmt && m_stmt_at_address); | |
20308 | ||
20309 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 20310 | { |
804d2729 TT |
20311 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20312 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20313 | } |
20314 | ||
1313c56e | 20315 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 20316 | { |
8c95582d AB |
20317 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
20318 | ||
804d2729 | 20319 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20320 | m_line_has_non_zero_discriminator, |
20321 | m_last_subfile)) | |
d9b3de22 | 20322 | { |
c24bdb02 | 20323 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 20324 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 20325 | builder->get_current_subfile (), |
8c95582d | 20326 | m_line, m_address, is_stmt, |
804d2729 | 20327 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20328 | } |
c24bdb02 | 20329 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20330 | m_last_line = m_line; |
d9b3de22 DE |
20331 | } |
20332 | } | |
20333 | } | |
1313c56e AB |
20334 | |
20335 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
20336 | have multiple line table entries all at m_address. */ | |
20337 | if (m_last_address != m_address) | |
20338 | { | |
20339 | m_stmt_at_address = false; | |
20340 | m_last_address = m_address; | |
20341 | } | |
20342 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
20343 | } |
20344 | ||
804d2729 TT |
20345 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20346 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20347 | { |
804d2729 | 20348 | m_cu = cu; |
6f77053d PA |
20349 | m_gdbarch = arch; |
20350 | m_record_lines_p = record_lines_p; | |
20351 | m_line_header = lh; | |
d9b3de22 | 20352 | |
804d2729 | 20353 | m_currently_recording_lines = true; |
d9b3de22 | 20354 | |
d9b3de22 DE |
20355 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20356 | was a line entry for it so that the backend has a chance to adjust it | |
20357 | and also record it in case it needs it. This is currently used by MIPS | |
20358 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20359 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20360 | m_is_stmt = lh->default_is_stmt; | |
20361 | m_discriminator = 0; | |
1313c56e AB |
20362 | |
20363 | m_last_address = m_address; | |
20364 | m_stmt_at_address = false; | |
252a6764 DE |
20365 | } |
20366 | ||
6f77053d PA |
20367 | void |
20368 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20369 | const gdb_byte *line_ptr, | |
7ab6656f | 20370 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20371 | { |
7ab6656f OJ |
20372 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20373 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20374 | values of zero to preserve GDB's previous behaviour which is to handle | |
20375 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20376 | |
7ab6656f | 20377 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20378 | { |
20379 | /* This line table is for a function which has been | |
20380 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20381 | ||
5e22e966 | 20382 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
20383 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20384 | ||
b98664d3 | 20385 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20386 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20387 | m_currently_recording_lines = false; |
20388 | /* Note: m_currently_recording_lines is left as false until we see | |
20389 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20390 | } |
20391 | } | |
20392 | ||
f3f5162e | 20393 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20394 | Process the line number information in LH. |
20395 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20396 | program in order to set included_p for every referenced header. */ | |
debd256d | 20397 | |
c906108c | 20398 | static void |
43f3e411 DE |
20399 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20400 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20401 | { |
d521ce57 TT |
20402 | const gdb_byte *line_ptr, *extended_end; |
20403 | const gdb_byte *line_end; | |
a8c50c1f | 20404 | unsigned int bytes_read, extended_len; |
699ca60a | 20405 | unsigned char op_code, extended_op; |
e142c38c | 20406 | CORE_ADDR baseaddr; |
5e22e966 | 20407 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20408 | bfd *abfd = objfile->obfd; |
08feed99 | 20409 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
20410 | /* True if we're recording line info (as opposed to building partial |
20411 | symtabs and just interested in finding include files mentioned by | |
20412 | the line number program). */ | |
20413 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20414 | |
b3b3bada | 20415 | baseaddr = objfile->text_section_offset (); |
c906108c | 20416 | |
debd256d JB |
20417 | line_ptr = lh->statement_program_start; |
20418 | line_end = lh->statement_program_end; | |
c906108c SS |
20419 | |
20420 | /* Read the statement sequences until there's nothing left. */ | |
20421 | while (line_ptr < line_end) | |
20422 | { | |
6f77053d PA |
20423 | /* The DWARF line number program state machine. Reset the state |
20424 | machine at the start of each sequence. */ | |
804d2729 | 20425 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20426 | bool end_sequence = false; |
d9b3de22 | 20427 | |
8c43009f | 20428 | if (record_lines_p) |
c906108c | 20429 | { |
8c43009f PA |
20430 | /* Start a subfile for the current file of the state |
20431 | machine. */ | |
20432 | const file_entry *fe = state_machine.current_file (); | |
20433 | ||
20434 | if (fe != NULL) | |
804d2729 | 20435 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20436 | } |
20437 | ||
a738430d | 20438 | /* Decode the table. */ |
d9b3de22 | 20439 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20440 | { |
20441 | op_code = read_1_byte (abfd, line_ptr); | |
20442 | line_ptr += 1; | |
9aa1fe7e | 20443 | |
debd256d | 20444 | if (op_code >= lh->opcode_base) |
6e70227d | 20445 | { |
8e07a239 | 20446 | /* Special opcode. */ |
6f77053d | 20447 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20448 | } |
20449 | else switch (op_code) | |
c906108c SS |
20450 | { |
20451 | case DW_LNS_extended_op: | |
3e43a32a MS |
20452 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20453 | &bytes_read); | |
473b7be6 | 20454 | line_ptr += bytes_read; |
a8c50c1f | 20455 | extended_end = line_ptr + extended_len; |
c906108c SS |
20456 | extended_op = read_1_byte (abfd, line_ptr); |
20457 | line_ptr += 1; | |
20458 | switch (extended_op) | |
20459 | { | |
20460 | case DW_LNE_end_sequence: | |
6f77053d PA |
20461 | state_machine.handle_end_sequence (); |
20462 | end_sequence = true; | |
c906108c SS |
20463 | break; |
20464 | case DW_LNE_set_address: | |
d9b3de22 DE |
20465 | { |
20466 | CORE_ADDR address | |
c8a7a66f | 20467 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 20468 | line_ptr += bytes_read; |
6f77053d PA |
20469 | |
20470 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20471 | lowpc - baseaddr, address); |
6f77053d | 20472 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20473 | } |
c906108c SS |
20474 | break; |
20475 | case DW_LNE_define_file: | |
debd256d | 20476 | { |
d521ce57 | 20477 | const char *cur_file; |
ecfb656c PA |
20478 | unsigned int mod_time, length; |
20479 | dir_index dindex; | |
6e70227d | 20480 | |
3e43a32a MS |
20481 | cur_file = read_direct_string (abfd, line_ptr, |
20482 | &bytes_read); | |
debd256d | 20483 | line_ptr += bytes_read; |
ecfb656c | 20484 | dindex = (dir_index) |
debd256d JB |
20485 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20486 | line_ptr += bytes_read; | |
20487 | mod_time = | |
20488 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20489 | line_ptr += bytes_read; | |
20490 | length = | |
20491 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20492 | line_ptr += bytes_read; | |
ecfb656c | 20493 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20494 | } |
c906108c | 20495 | break; |
d0c6ba3d | 20496 | case DW_LNE_set_discriminator: |
6f77053d PA |
20497 | { |
20498 | /* The discriminator is not interesting to the | |
20499 | debugger; just ignore it. We still need to | |
20500 | check its value though: | |
20501 | if there are consecutive entries for the same | |
20502 | (non-prologue) line we want to coalesce them. | |
20503 | PR 17276. */ | |
20504 | unsigned int discr | |
20505 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20506 | line_ptr += bytes_read; | |
20507 | ||
20508 | state_machine.handle_set_discriminator (discr); | |
20509 | } | |
d0c6ba3d | 20510 | break; |
c906108c | 20511 | default: |
b98664d3 | 20512 | complaint (_("mangled .debug_line section")); |
debd256d | 20513 | return; |
c906108c | 20514 | } |
a8c50c1f DJ |
20515 | /* Make sure that we parsed the extended op correctly. If e.g. |
20516 | we expected a different address size than the producer used, | |
20517 | we may have read the wrong number of bytes. */ | |
20518 | if (line_ptr != extended_end) | |
20519 | { | |
b98664d3 | 20520 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20521 | return; |
20522 | } | |
c906108c SS |
20523 | break; |
20524 | case DW_LNS_copy: | |
6f77053d | 20525 | state_machine.handle_copy (); |
c906108c SS |
20526 | break; |
20527 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20528 | { |
20529 | CORE_ADDR adjust | |
20530 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20531 | line_ptr += bytes_read; |
6f77053d PA |
20532 | |
20533 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20534 | } |
c906108c SS |
20535 | break; |
20536 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20537 | { |
20538 | int line_delta | |
20539 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20540 | line_ptr += bytes_read; |
6f77053d PA |
20541 | |
20542 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20543 | } |
c906108c SS |
20544 | break; |
20545 | case DW_LNS_set_file: | |
d9b3de22 | 20546 | { |
6f77053d | 20547 | file_name_index file |
ecfb656c PA |
20548 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20549 | &bytes_read); | |
d9b3de22 | 20550 | line_ptr += bytes_read; |
8c43009f | 20551 | |
6f77053d | 20552 | state_machine.handle_set_file (file); |
d9b3de22 | 20553 | } |
c906108c SS |
20554 | break; |
20555 | case DW_LNS_set_column: | |
0ad93d4f | 20556 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20557 | line_ptr += bytes_read; |
20558 | break; | |
20559 | case DW_LNS_negate_stmt: | |
6f77053d | 20560 | state_machine.handle_negate_stmt (); |
c906108c SS |
20561 | break; |
20562 | case DW_LNS_set_basic_block: | |
c906108c | 20563 | break; |
c2c6d25f JM |
20564 | /* Add to the address register of the state machine the |
20565 | address increment value corresponding to special opcode | |
a738430d MK |
20566 | 255. I.e., this value is scaled by the minimum |
20567 | instruction length since special opcode 255 would have | |
b021a221 | 20568 | scaled the increment. */ |
c906108c | 20569 | case DW_LNS_const_add_pc: |
6f77053d | 20570 | state_machine.handle_const_add_pc (); |
c906108c SS |
20571 | break; |
20572 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20573 | { |
6f77053d | 20574 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20575 | line_ptr += 2; |
6f77053d PA |
20576 | |
20577 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20578 | } |
c906108c | 20579 | break; |
9aa1fe7e | 20580 | default: |
a738430d MK |
20581 | { |
20582 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20583 | int i; |
a738430d | 20584 | |
debd256d | 20585 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20586 | { |
20587 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20588 | line_ptr += bytes_read; | |
20589 | } | |
20590 | } | |
c906108c SS |
20591 | } |
20592 | } | |
d9b3de22 DE |
20593 | |
20594 | if (!end_sequence) | |
20595 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20596 | ||
20597 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20598 | in which case we still finish recording the last line). */ | |
6f77053d | 20599 | state_machine.record_line (true); |
c906108c | 20600 | } |
f3f5162e DE |
20601 | } |
20602 | ||
20603 | /* Decode the Line Number Program (LNP) for the given line_header | |
20604 | structure and CU. The actual information extracted and the type | |
20605 | of structures created from the LNP depends on the value of PST. | |
20606 | ||
20607 | 1. If PST is NULL, then this procedure uses the data from the program | |
20608 | to create all necessary symbol tables, and their linetables. | |
20609 | ||
20610 | 2. If PST is not NULL, this procedure reads the program to determine | |
20611 | the list of files included by the unit represented by PST, and | |
20612 | builds all the associated partial symbol tables. | |
20613 | ||
20614 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20615 | It is used for relative paths in the line table. | |
20616 | NOTE: When processing partial symtabs (pst != NULL), | |
20617 | comp_dir == pst->dirname. | |
20618 | ||
20619 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20620 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20621 | symtab we don't use it in the name of the psymtabs we create. | |
20622 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20623 | A good testcase for this is mb-inline.exp. |
20624 | ||
527f3840 JK |
20625 | LOWPC is the lowest address in CU (or 0 if not known). |
20626 | ||
20627 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20628 | for its PC<->lines mapping information. Otherwise only the filename | |
20629 | table is read in. */ | |
f3f5162e DE |
20630 | |
20631 | static void | |
20632 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 20633 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 20634 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 20635 | { |
5e22e966 | 20636 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20637 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 20638 | |
527f3840 JK |
20639 | if (decode_mapping) |
20640 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20641 | |
20642 | if (decode_for_pst_p) | |
20643 | { | |
aaa75496 JB |
20644 | /* Now that we're done scanning the Line Header Program, we can |
20645 | create the psymtab of each included file. */ | |
7ba99d21 AT |
20646 | for (auto &file_entry : lh->file_names ()) |
20647 | if (file_entry.included_p == 1) | |
aaa75496 | 20648 | { |
c89b44cd | 20649 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 20650 | const char *include_name = |
7ba99d21 AT |
20651 | psymtab_include_file_name (lh, file_entry, pst, |
20652 | comp_dir, &name_holder); | |
c6da4cef | 20653 | if (include_name != NULL) |
aaa75496 JB |
20654 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20655 | } | |
20656 | } | |
cb1df416 DJ |
20657 | else |
20658 | { | |
20659 | /* Make sure a symtab is created for every file, even files | |
20660 | which contain only variables (i.e. no code with associated | |
20661 | line numbers). */ | |
c24bdb02 KS |
20662 | buildsym_compunit *builder = cu->get_builder (); |
20663 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 20664 | |
7ba99d21 | 20665 | for (auto &fe : lh->file_names ()) |
cb1df416 | 20666 | { |
804d2729 | 20667 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 20668 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 20669 | { |
c24bdb02 | 20670 | builder->get_current_subfile ()->symtab |
804d2729 | 20671 | = allocate_symtab (cust, |
c24bdb02 | 20672 | builder->get_current_subfile ()->name); |
43f3e411 | 20673 | } |
c24bdb02 | 20674 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
20675 | } |
20676 | } | |
c906108c SS |
20677 | } |
20678 | ||
20679 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20680 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 20681 | or NULL if not known. |
c906108c SS |
20682 | This routine tries to keep line numbers from identical absolute and |
20683 | relative file names in a common subfile. | |
20684 | ||
20685 | Using the `list' example from the GDB testsuite, which resides in | |
20686 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
20687 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
20688 | ||
c5aa993b | 20689 | DW_AT_name: /srcdir/list0.c |
4d663531 | 20690 | DW_AT_comp_dir: /compdir |
357e46e7 | 20691 | files.files[0].name: list0.h |
c5aa993b | 20692 | files.files[0].dir: /srcdir |
357e46e7 | 20693 | files.files[1].name: list0.c |
c5aa993b | 20694 | files.files[1].dir: /srcdir |
c906108c SS |
20695 | |
20696 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
20697 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
20698 | start_subfile will ensure that this happens provided that we pass the | |
20699 | concatenation of files.files[1].dir and files.files[1].name as the | |
20700 | subfile's name. */ | |
c906108c SS |
20701 | |
20702 | static void | |
804d2729 TT |
20703 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
20704 | const char *dirname) | |
c906108c | 20705 | { |
43816ebc | 20706 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 20707 | |
4d663531 | 20708 | /* In order not to lose the line information directory, |
4f1520fb FR |
20709 | we concatenate it to the filename when it makes sense. |
20710 | Note that the Dwarf3 standard says (speaking of filenames in line | |
20711 | information): ``The directory index is ignored for file names | |
20712 | that represent full path names''. Thus ignoring dirname in the | |
20713 | `else' branch below isn't an issue. */ | |
c906108c | 20714 | |
d5166ae1 | 20715 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 20716 | { |
43816ebc TT |
20717 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
20718 | filename = copy.get (); | |
d521ce57 | 20719 | } |
c906108c | 20720 | |
c24bdb02 | 20721 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
20722 | } |
20723 | ||
804d2729 TT |
20724 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
20725 | buildsym_compunit constructor. */ | |
f4dc4d17 | 20726 | |
c24bdb02 KS |
20727 | struct compunit_symtab * |
20728 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
20729 | CORE_ADDR low_pc) | |
f4dc4d17 | 20730 | { |
c24bdb02 | 20731 | gdb_assert (m_builder == nullptr); |
43f3e411 | 20732 | |
c24bdb02 | 20733 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 20734 | (this->per_objfile->objfile, |
c24bdb02 | 20735 | name, comp_dir, language, low_pc)); |
93b8bea4 | 20736 | |
c24bdb02 | 20737 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 20738 | |
c24bdb02 KS |
20739 | get_builder ()->record_debugformat ("DWARF 2"); |
20740 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 20741 | |
c24bdb02 | 20742 | processing_has_namespace_info = false; |
43f3e411 | 20743 | |
c24bdb02 | 20744 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
20745 | } |
20746 | ||
4c2df51b DJ |
20747 | static void |
20748 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 20749 | struct dwarf2_cu *cu) |
4c2df51b | 20750 | { |
5e22e966 | 20751 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
20752 | struct comp_unit_head *cu_header = &cu->header; |
20753 | ||
4c2df51b DJ |
20754 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
20755 | code here to turn a symbol with DW_AT_external and a | |
20756 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
20757 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
20758 | with some versions of binutils) where shared libraries could have | |
20759 | relocations against symbols in their debug information - the | |
20760 | minimal symbol would have the right address, but the debug info | |
20761 | would not. It's no longer necessary, because we will explicitly | |
20762 | apply relocations when we read in the debug information now. */ | |
20763 | ||
20764 | /* A DW_AT_location attribute with no contents indicates that a | |
20765 | variable has been optimized away. */ | |
4fc6c0d5 | 20766 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 20767 | { |
f1e6e072 | 20768 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
20769 | return; |
20770 | } | |
20771 | ||
20772 | /* Handle one degenerate form of location expression specially, to | |
20773 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
20774 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
20775 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 20776 | |
4fc6c0d5 | 20777 | if (attr->form_is_block () |
3019eac3 DE |
20778 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
20779 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
20780 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
20781 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
20782 | && (DW_BLOCK (attr)->size |
20783 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 20784 | { |
891d2f0b | 20785 | unsigned int dummy; |
4c2df51b | 20786 | |
3019eac3 | 20787 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
20788 | SET_SYMBOL_VALUE_ADDRESS |
20789 | (sym, cu->header.read_address (objfile->obfd, | |
20790 | DW_BLOCK (attr)->data + 1, | |
20791 | &dummy)); | |
3019eac3 | 20792 | else |
38583298 TT |
20793 | SET_SYMBOL_VALUE_ADDRESS |
20794 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
20795 | &dummy)); | |
f1e6e072 | 20796 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 20797 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
20798 | SET_SYMBOL_VALUE_ADDRESS |
20799 | (sym, | |
20800 | SYMBOL_VALUE_ADDRESS (sym) | |
20801 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
20802 | return; |
20803 | } | |
20804 | ||
20805 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
20806 | expression evaluator, and use LOC_COMPUTED only when necessary | |
20807 | (i.e. when the value of a register or memory location is | |
20808 | referenced, or a thread-local block, etc.). Then again, it might | |
20809 | not be worthwhile. I'm assuming that it isn't unless performance | |
20810 | or memory numbers show me otherwise. */ | |
20811 | ||
f1e6e072 | 20812 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 20813 | |
f1e6e072 | 20814 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 20815 | cu->has_loclist = true; |
4c2df51b DJ |
20816 | } |
20817 | ||
c906108c SS |
20818 | /* Given a pointer to a DWARF information entry, figure out if we need |
20819 | to make a symbol table entry for it, and if so, create a new entry | |
20820 | and return a pointer to it. | |
20821 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
20822 | used the passed type. |
20823 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
20824 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
20825 | |
20826 | static struct symbol * | |
5e2db402 TT |
20827 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
20828 | struct symbol *space) | |
c906108c | 20829 | { |
976ca316 SM |
20830 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20831 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 20832 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 20833 | struct symbol *sym = NULL; |
15d034d0 | 20834 | const char *name; |
c906108c SS |
20835 | struct attribute *attr = NULL; |
20836 | struct attribute *attr2 = NULL; | |
e142c38c | 20837 | CORE_ADDR baseaddr; |
e37fd15a SW |
20838 | struct pending **list_to_add = NULL; |
20839 | ||
edb3359d | 20840 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 20841 | |
b3b3bada | 20842 | baseaddr = objfile->text_section_offset (); |
c906108c | 20843 | |
94af9270 | 20844 | name = dwarf2_name (die, cu); |
c906108c SS |
20845 | if (name) |
20846 | { | |
34eaf542 | 20847 | int suppress_add = 0; |
94af9270 | 20848 | |
34eaf542 TT |
20849 | if (space) |
20850 | sym = space; | |
20851 | else | |
8c14c3a3 | 20852 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 20853 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
20854 | |
20855 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 20856 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
20857 | /* Fortran does not have mangling standard and the mangling does differ |
20858 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
20859 | const char *physname |
20860 | = (cu->language == language_fortran | |
20861 | ? dwarf2_full_name (name, die, cu) | |
20862 | : dwarf2_physname (name, die, cu)); | |
20863 | const char *linkagename = dw2_linkage_name (die, cu); | |
20864 | ||
20865 | if (linkagename == nullptr || cu->language == language_ada) | |
20866 | sym->set_linkage_name (physname); | |
20867 | else | |
20868 | { | |
20869 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
20870 | sym->set_linkage_name (linkagename); | |
20871 | } | |
f55ee35c | 20872 | |
c906108c | 20873 | /* Default assumptions. |
c5aa993b | 20874 | Use the passed type or decode it from the die. */ |
176620f1 | 20875 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 20876 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
20877 | if (type != NULL) |
20878 | SYMBOL_TYPE (sym) = type; | |
20879 | else | |
e7c27a73 | 20880 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
20881 | attr = dwarf2_attr (die, |
20882 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
20883 | cu); | |
435d3d88 | 20884 | if (attr != nullptr) |
c906108c SS |
20885 | { |
20886 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
20887 | } | |
cb1df416 | 20888 | |
edb3359d DJ |
20889 | attr = dwarf2_attr (die, |
20890 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
20891 | cu); | |
435d3d88 | 20892 | if (attr != nullptr) |
cb1df416 | 20893 | { |
ecfb656c | 20894 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 20895 | struct file_entry *fe; |
9a619af0 | 20896 | |
ecfb656c PA |
20897 | if (cu->line_header != NULL) |
20898 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
20899 | else |
20900 | fe = NULL; | |
20901 | ||
20902 | if (fe == NULL) | |
b98664d3 | 20903 | complaint (_("file index out of range")); |
8c43009f PA |
20904 | else |
20905 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
20906 | } |
20907 | ||
c906108c SS |
20908 | switch (die->tag) |
20909 | { | |
20910 | case DW_TAG_label: | |
e142c38c | 20911 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 20912 | if (attr != nullptr) |
3e29f34a MR |
20913 | { |
20914 | CORE_ADDR addr; | |
20915 | ||
cd6c91b4 | 20916 | addr = attr->value_as_address (); |
3e29f34a | 20917 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 20918 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 20919 | } |
0f5238ed TT |
20920 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
20921 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 20922 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 20923 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
20924 | break; |
20925 | case DW_TAG_subprogram: | |
20926 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20927 | finish_block. */ | |
f1e6e072 | 20928 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 20929 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 20930 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
20931 | || cu->language == language_ada |
20932 | || cu->language == language_fortran) | |
c906108c | 20933 | { |
2cfa0c8d | 20934 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
20935 | Ada and Fortran subprograms, whether marked external or |
20936 | not, are always stored as a global symbol, because we want | |
20937 | to be able to access them globally. For instance, we want | |
20938 | to be able to break on a nested subprogram without having | |
20939 | to specify the context. */ | |
c24bdb02 | 20940 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
20941 | } |
20942 | else | |
20943 | { | |
e37fd15a | 20944 | list_to_add = cu->list_in_scope; |
c906108c SS |
20945 | } |
20946 | break; | |
edb3359d DJ |
20947 | case DW_TAG_inlined_subroutine: |
20948 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20949 | finish_block. */ | |
f1e6e072 | 20950 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 20951 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 20952 | list_to_add = cu->list_in_scope; |
edb3359d | 20953 | break; |
34eaf542 TT |
20954 | case DW_TAG_template_value_param: |
20955 | suppress_add = 1; | |
20956 | /* Fall through. */ | |
72929c62 | 20957 | case DW_TAG_constant: |
c906108c | 20958 | case DW_TAG_variable: |
254e6b9e | 20959 | case DW_TAG_member: |
0963b4bd MS |
20960 | /* Compilation with minimal debug info may result in |
20961 | variables with missing type entries. Change the | |
20962 | misleading `void' type to something sensible. */ | |
78134374 | 20963 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 20964 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 20965 | |
e142c38c | 20966 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
20967 | /* In the case of DW_TAG_member, we should only be called for |
20968 | static const members. */ | |
20969 | if (die->tag == DW_TAG_member) | |
20970 | { | |
3863f96c DE |
20971 | /* dwarf2_add_field uses die_is_declaration, |
20972 | so we do the same. */ | |
254e6b9e DE |
20973 | gdb_assert (die_is_declaration (die, cu)); |
20974 | gdb_assert (attr); | |
20975 | } | |
435d3d88 | 20976 | if (attr != nullptr) |
c906108c | 20977 | { |
e7c27a73 | 20978 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 20979 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 20980 | if (!suppress_add) |
34eaf542 TT |
20981 | { |
20982 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 20983 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 20984 | else |
e37fd15a | 20985 | list_to_add = cu->list_in_scope; |
34eaf542 | 20986 | } |
c906108c SS |
20987 | break; |
20988 | } | |
e142c38c | 20989 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 20990 | if (attr != nullptr) |
c906108c | 20991 | { |
e7c27a73 | 20992 | var_decode_location (attr, sym, cu); |
e142c38c | 20993 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
20994 | |
20995 | /* Fortran explicitly imports any global symbols to the local | |
20996 | scope by DW_TAG_common_block. */ | |
20997 | if (cu->language == language_fortran && die->parent | |
20998 | && die->parent->tag == DW_TAG_common_block) | |
20999 | attr2 = NULL; | |
21000 | ||
caac4577 JG |
21001 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21002 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 21003 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
21004 | { |
21005 | /* When a static variable is eliminated by the linker, | |
21006 | the corresponding debug information is not stripped | |
21007 | out, but the variable address is set to null; | |
21008 | do not add such variables into symbol table. */ | |
21009 | } | |
21010 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21011 | { |
4b610737 TT |
21012 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21013 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 21014 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
21015 | { |
21016 | /* A global static variable might be subject to | |
21017 | copy relocation. We first check for a local | |
21018 | minsym, though, because maybe the symbol was | |
21019 | marked hidden, in which case this would not | |
21020 | apply. */ | |
21021 | bound_minimal_symbol found | |
21022 | = (lookup_minimal_symbol_linkage | |
987012b8 | 21023 | (sym->linkage_name (), objfile)); |
4b610737 TT |
21024 | if (found.minsym != nullptr) |
21025 | sym->maybe_copied = 1; | |
21026 | } | |
f55ee35c | 21027 | |
1c809c68 TT |
21028 | /* A variable with DW_AT_external is never static, |
21029 | but it may be block-scoped. */ | |
804d2729 | 21030 | list_to_add |
c24bdb02 KS |
21031 | = ((cu->list_in_scope |
21032 | == cu->get_builder ()->get_file_symbols ()) | |
21033 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21034 | : cu->list_in_scope); |
1c809c68 | 21035 | } |
c906108c | 21036 | else |
e37fd15a | 21037 | list_to_add = cu->list_in_scope; |
c906108c SS |
21038 | } |
21039 | else | |
21040 | { | |
21041 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21042 | If it is an external symbol and we have type information |
21043 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21044 | The address of the variable will then be determined from | |
21045 | the minimal symbol table whenever the variable is | |
21046 | referenced. */ | |
e142c38c | 21047 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21048 | |
21049 | /* Fortran explicitly imports any global symbols to the local | |
21050 | scope by DW_TAG_common_block. */ | |
21051 | if (cu->language == language_fortran && die->parent | |
21052 | && die->parent->tag == DW_TAG_common_block) | |
21053 | { | |
21054 | /* SYMBOL_CLASS doesn't matter here because | |
21055 | read_common_block is going to reset it. */ | |
21056 | if (!suppress_add) | |
21057 | list_to_add = cu->list_in_scope; | |
21058 | } | |
21059 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21060 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21061 | { |
0fe7935b DJ |
21062 | /* A variable with DW_AT_external is never static, but it |
21063 | may be block-scoped. */ | |
804d2729 | 21064 | list_to_add |
c24bdb02 KS |
21065 | = ((cu->list_in_scope |
21066 | == cu->get_builder ()->get_file_symbols ()) | |
21067 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21068 | : cu->list_in_scope); |
0fe7935b | 21069 | |
f1e6e072 | 21070 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21071 | } |
442ddf59 JK |
21072 | else if (!die_is_declaration (die, cu)) |
21073 | { | |
21074 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21075 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21076 | if (!suppress_add) |
21077 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21078 | } |
c906108c SS |
21079 | } |
21080 | break; | |
21081 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21082 | { |
21083 | /* If we are inside a function, mark this as an argument. If | |
21084 | not, we might be looking at an argument to an inlined function | |
21085 | when we do not have enough information to show inlined frames; | |
21086 | pretend it's a local variable in that case so that the user can | |
21087 | still see it. */ | |
804d2729 | 21088 | struct context_stack *curr |
c24bdb02 | 21089 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
21090 | if (curr != nullptr && curr->name != nullptr) |
21091 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21092 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 21093 | if (attr != nullptr) |
a60f3166 TT |
21094 | { |
21095 | var_decode_location (attr, sym, cu); | |
21096 | } | |
21097 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 21098 | if (attr != nullptr) |
a60f3166 TT |
21099 | { |
21100 | dwarf2_const_value (attr, sym, cu); | |
21101 | } | |
f346a30d | 21102 | |
a60f3166 TT |
21103 | list_to_add = cu->list_in_scope; |
21104 | } | |
c906108c SS |
21105 | break; |
21106 | case DW_TAG_unspecified_parameters: | |
21107 | /* From varargs functions; gdb doesn't seem to have any | |
21108 | interest in this information, so just ignore it for now. | |
21109 | (FIXME?) */ | |
21110 | break; | |
34eaf542 TT |
21111 | case DW_TAG_template_type_param: |
21112 | suppress_add = 1; | |
21113 | /* Fall through. */ | |
c906108c | 21114 | case DW_TAG_class_type: |
680b30c7 | 21115 | case DW_TAG_interface_type: |
c906108c SS |
21116 | case DW_TAG_structure_type: |
21117 | case DW_TAG_union_type: | |
72019c9c | 21118 | case DW_TAG_set_type: |
c906108c | 21119 | case DW_TAG_enumeration_type: |
f1e6e072 | 21120 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21121 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21122 | |
63d06c5c | 21123 | { |
9c37b5ae | 21124 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21125 | really ever be static objects: otherwise, if you try |
21126 | to, say, break of a class's method and you're in a file | |
21127 | which doesn't mention that class, it won't work unless | |
21128 | the check for all static symbols in lookup_symbol_aux | |
21129 | saves you. See the OtherFileClass tests in | |
21130 | gdb.c++/namespace.exp. */ | |
21131 | ||
e37fd15a | 21132 | if (!suppress_add) |
34eaf542 | 21133 | { |
c24bdb02 | 21134 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 21135 | list_to_add |
c24bdb02 | 21136 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 21137 | && cu->language == language_cplus |
c24bdb02 | 21138 | ? builder->get_global_symbols () |
804d2729 | 21139 | : cu->list_in_scope); |
63d06c5c | 21140 | |
64382290 | 21141 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21142 | ... }" also defines a typedef for "foo". */ |
64382290 | 21143 | if (cu->language == language_cplus |
45280282 | 21144 | || cu->language == language_ada |
c44af4eb TT |
21145 | || cu->language == language_d |
21146 | || cu->language == language_rust) | |
64382290 TT |
21147 | { |
21148 | /* The symbol's name is already allocated along | |
21149 | with this objfile, so we don't need to | |
21150 | duplicate it for the type. */ | |
7d93a1e0 | 21151 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 21152 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 21153 | } |
63d06c5c DC |
21154 | } |
21155 | } | |
c906108c SS |
21156 | break; |
21157 | case DW_TAG_typedef: | |
f1e6e072 | 21158 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21159 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21160 | list_to_add = cu->list_in_scope; |
63d06c5c | 21161 | break; |
c906108c | 21162 | case DW_TAG_base_type: |
a02abb62 | 21163 | case DW_TAG_subrange_type: |
f1e6e072 | 21164 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21165 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21166 | list_to_add = cu->list_in_scope; |
c906108c SS |
21167 | break; |
21168 | case DW_TAG_enumerator: | |
e142c38c | 21169 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 21170 | if (attr != nullptr) |
c906108c | 21171 | { |
e7c27a73 | 21172 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21173 | } |
63d06c5c DC |
21174 | { |
21175 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21176 | DW_TAG_class_type, etc. block. */ | |
21177 | ||
804d2729 | 21178 | list_to_add |
c24bdb02 | 21179 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21180 | && cu->language == language_cplus |
c24bdb02 | 21181 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21182 | : cu->list_in_scope); |
63d06c5c | 21183 | } |
c906108c | 21184 | break; |
74921315 | 21185 | case DW_TAG_imported_declaration: |
5c4e30ca | 21186 | case DW_TAG_namespace: |
f1e6e072 | 21187 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21188 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21189 | break; |
530e8392 KB |
21190 | case DW_TAG_module: |
21191 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21192 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21193 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21194 | break; |
4357ac6c | 21195 | case DW_TAG_common_block: |
f1e6e072 | 21196 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21197 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21198 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21199 | break; |
c906108c SS |
21200 | default: |
21201 | /* Not a tag we recognize. Hopefully we aren't processing | |
21202 | trash data, but since we must specifically ignore things | |
21203 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21204 | this point. */ |
b98664d3 | 21205 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21206 | dwarf_tag_name (die->tag)); |
c906108c SS |
21207 | break; |
21208 | } | |
df8a16a1 | 21209 | |
e37fd15a SW |
21210 | if (suppress_add) |
21211 | { | |
21212 | sym->hash_next = objfile->template_symbols; | |
21213 | objfile->template_symbols = sym; | |
21214 | list_to_add = NULL; | |
21215 | } | |
21216 | ||
21217 | if (list_to_add != NULL) | |
d3cb6808 | 21218 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21219 | |
df8a16a1 DJ |
21220 | /* For the benefit of old versions of GCC, check for anonymous |
21221 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21222 | if (!cu->processing_has_namespace_info |
94af9270 | 21223 | && cu->language == language_cplus) |
c24bdb02 | 21224 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21225 | } |
21226 | return (sym); | |
21227 | } | |
21228 | ||
98bfdba5 PA |
21229 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21230 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21231 | standard (v4) is not entirely clear about the meaning of using | |
21232 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21233 | wider than the data. The conclusion of a discussion on the DWARF | |
21234 | list was that this is unspecified. We choose to always zero-extend | |
21235 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21236 | |
98bfdba5 | 21237 | static gdb_byte * |
ff39bb5e | 21238 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21239 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21240 | { |
5e22e966 | 21241 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
21242 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21243 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21244 | LONGEST l = DW_UNSND (attr); |
21245 | ||
21246 | if (bits < sizeof (*value) * 8) | |
21247 | { | |
21248 | l &= ((LONGEST) 1 << bits) - 1; | |
21249 | *value = l; | |
21250 | } | |
21251 | else if (bits == sizeof (*value) * 8) | |
21252 | *value = l; | |
21253 | else | |
21254 | { | |
224c3ddb | 21255 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21256 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21257 | return bytes; | |
21258 | } | |
21259 | ||
21260 | return NULL; | |
21261 | } | |
21262 | ||
21263 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21264 | the value does not fit in *VALUE, set *BYTES - either already | |
21265 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21266 | or, set *BATON, if we translated the constant to a location | |
21267 | expression. */ | |
21268 | ||
21269 | static void | |
ff39bb5e | 21270 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21271 | const char *name, struct obstack *obstack, |
21272 | struct dwarf2_cu *cu, | |
d521ce57 | 21273 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21274 | struct dwarf2_locexpr_baton **baton) |
21275 | { | |
5e22e966 | 21276 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 21277 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 21278 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21279 | struct dwarf_block *blk; |
98bfdba5 PA |
21280 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21281 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21282 | ||
21283 | *value = 0; | |
21284 | *bytes = NULL; | |
21285 | *baton = NULL; | |
c906108c SS |
21286 | |
21287 | switch (attr->form) | |
21288 | { | |
21289 | case DW_FORM_addr: | |
336d760d | 21290 | case DW_FORM_addrx: |
3019eac3 | 21291 | case DW_FORM_GNU_addr_index: |
ac56253d | 21292 | { |
ac56253d TT |
21293 | gdb_byte *data; |
21294 | ||
98bfdba5 PA |
21295 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21296 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21297 | cu_header->addr_size, |
98bfdba5 | 21298 | TYPE_LENGTH (type)); |
ac56253d TT |
21299 | /* Symbols of this form are reasonably rare, so we just |
21300 | piggyback on the existing location code rather than writing | |
21301 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21302 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 21303 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
21304 | (*baton)->per_cu = cu->per_cu; |
21305 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21306 | |
98bfdba5 | 21307 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21308 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21309 | (*baton)->data = data; |
ac56253d TT |
21310 | |
21311 | data[0] = DW_OP_addr; | |
21312 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21313 | byte_order, DW_ADDR (attr)); | |
21314 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21315 | } |
c906108c | 21316 | break; |
4ac36638 | 21317 | case DW_FORM_string: |
93b5768b | 21318 | case DW_FORM_strp: |
cf532bd1 | 21319 | case DW_FORM_strx: |
3019eac3 | 21320 | case DW_FORM_GNU_str_index: |
36586728 | 21321 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21322 | /* DW_STRING is already allocated on the objfile obstack, point |
21323 | directly to it. */ | |
d521ce57 | 21324 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21325 | break; |
c906108c SS |
21326 | case DW_FORM_block1: |
21327 | case DW_FORM_block2: | |
21328 | case DW_FORM_block4: | |
21329 | case DW_FORM_block: | |
2dc7f7b3 | 21330 | case DW_FORM_exprloc: |
0224619f | 21331 | case DW_FORM_data16: |
c906108c | 21332 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21333 | if (TYPE_LENGTH (type) != blk->size) |
21334 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21335 | TYPE_LENGTH (type)); | |
21336 | *bytes = blk->data; | |
c906108c | 21337 | break; |
2df3850c JM |
21338 | |
21339 | /* The DW_AT_const_value attributes are supposed to carry the | |
21340 | symbol's value "represented as it would be on the target | |
21341 | architecture." By the time we get here, it's already been | |
21342 | converted to host endianness, so we just need to sign- or | |
21343 | zero-extend it as appropriate. */ | |
21344 | case DW_FORM_data1: | |
3aef2284 | 21345 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21346 | break; |
c906108c | 21347 | case DW_FORM_data2: |
3aef2284 | 21348 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21349 | break; |
c906108c | 21350 | case DW_FORM_data4: |
3aef2284 | 21351 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21352 | break; |
c906108c | 21353 | case DW_FORM_data8: |
3aef2284 | 21354 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21355 | break; |
21356 | ||
c906108c | 21357 | case DW_FORM_sdata: |
663c44ac | 21358 | case DW_FORM_implicit_const: |
98bfdba5 | 21359 | *value = DW_SND (attr); |
2df3850c JM |
21360 | break; |
21361 | ||
c906108c | 21362 | case DW_FORM_udata: |
98bfdba5 | 21363 | *value = DW_UNSND (attr); |
c906108c | 21364 | break; |
2df3850c | 21365 | |
c906108c | 21366 | default: |
b98664d3 | 21367 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21368 | dwarf_form_name (attr->form)); |
98bfdba5 | 21369 | *value = 0; |
c906108c SS |
21370 | break; |
21371 | } | |
21372 | } | |
21373 | ||
2df3850c | 21374 | |
98bfdba5 PA |
21375 | /* Copy constant value from an attribute to a symbol. */ |
21376 | ||
2df3850c | 21377 | static void |
ff39bb5e | 21378 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21379 | struct dwarf2_cu *cu) |
2df3850c | 21380 | { |
5e22e966 | 21381 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 21382 | LONGEST value; |
d521ce57 | 21383 | const gdb_byte *bytes; |
98bfdba5 | 21384 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21385 | |
98bfdba5 | 21386 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21387 | sym->print_name (), |
98bfdba5 PA |
21388 | &objfile->objfile_obstack, cu, |
21389 | &value, &bytes, &baton); | |
2df3850c | 21390 | |
98bfdba5 PA |
21391 | if (baton != NULL) |
21392 | { | |
98bfdba5 | 21393 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21394 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21395 | } |
21396 | else if (bytes != NULL) | |
21397 | { | |
21398 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21399 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21400 | } |
21401 | else | |
21402 | { | |
21403 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21404 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21405 | } |
2df3850c JM |
21406 | } |
21407 | ||
c906108c SS |
21408 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21409 | ||
21410 | static struct type * | |
e7c27a73 | 21411 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21412 | { |
c906108c | 21413 | struct attribute *type_attr; |
c906108c | 21414 | |
e142c38c | 21415 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21416 | if (!type_attr) |
21417 | { | |
5e22e966 | 21418 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21419 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21420 | return objfile_type (objfile)->builtin_void; |
c906108c | 21421 | } |
348e048f | 21422 | |
673bfd45 | 21423 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21424 | } |
21425 | ||
b4ba55a1 JB |
21426 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21427 | that allows to find parallel types through that information instead | |
21428 | of having to do expensive parallel lookups by type name. */ | |
21429 | ||
21430 | static int | |
21431 | need_gnat_info (struct dwarf2_cu *cu) | |
21432 | { | |
de4cb04a JB |
21433 | /* Assume that the Ada compiler was GNAT, which always produces |
21434 | the auxiliary information. */ | |
21435 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21436 | } |
21437 | ||
b4ba55a1 JB |
21438 | /* Return the auxiliary type of the die in question using its |
21439 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21440 | attribute is not present. */ | |
21441 | ||
21442 | static struct type * | |
21443 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21444 | { | |
b4ba55a1 | 21445 | struct attribute *type_attr; |
b4ba55a1 JB |
21446 | |
21447 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21448 | if (!type_attr) | |
21449 | return NULL; | |
21450 | ||
673bfd45 | 21451 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21452 | } |
21453 | ||
21454 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21455 | descriptive type accordingly. */ | |
21456 | ||
21457 | static void | |
21458 | set_descriptive_type (struct type *type, struct die_info *die, | |
21459 | struct dwarf2_cu *cu) | |
21460 | { | |
21461 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21462 | ||
21463 | if (descriptive_type) | |
21464 | { | |
21465 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21466 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21467 | } | |
21468 | } | |
21469 | ||
c906108c SS |
21470 | /* Return the containing type of the die in question using its |
21471 | DW_AT_containing_type attribute. */ | |
21472 | ||
21473 | static struct type * | |
e7c27a73 | 21474 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21475 | { |
c906108c | 21476 | struct attribute *type_attr; |
5e22e966 | 21477 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21478 | |
e142c38c | 21479 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21480 | if (!type_attr) |
21481 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21482 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21483 | |
673bfd45 | 21484 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21485 | } |
21486 | ||
ac9ec31b DE |
21487 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21488 | ||
21489 | static struct type * | |
21490 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21491 | { | |
976ca316 SM |
21492 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
21493 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 21494 | char *saved; |
ac9ec31b | 21495 | |
528e1572 SM |
21496 | std::string message |
21497 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21498 | objfile_name (objfile), | |
21499 | sect_offset_str (cu->header.sect_off), | |
21500 | sect_offset_str (die->sect_off)); | |
efba19b0 | 21501 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 21502 | |
19f392bc | 21503 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21504 | } |
21505 | ||
673bfd45 | 21506 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21507 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21508 | DW_AT_containing_type. | |
673bfd45 DE |
21509 | If there is no type substitute an error marker. */ |
21510 | ||
c906108c | 21511 | static struct type * |
ff39bb5e | 21512 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21513 | struct dwarf2_cu *cu) |
c906108c | 21514 | { |
976ca316 SM |
21515 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
21516 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
21517 | struct type *this_type; |
21518 | ||
ac9ec31b DE |
21519 | gdb_assert (attr->name == DW_AT_type |
21520 | || attr->name == DW_AT_GNAT_descriptive_type | |
21521 | || attr->name == DW_AT_containing_type); | |
21522 | ||
673bfd45 DE |
21523 | /* First see if we have it cached. */ |
21524 | ||
36586728 TT |
21525 | if (attr->form == DW_FORM_GNU_ref_alt) |
21526 | { | |
21527 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 21528 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 21529 | |
976ca316 SM |
21530 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
21531 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 21532 | } |
cd6c91b4 | 21533 | else if (attr->form_is_ref ()) |
673bfd45 | 21534 | { |
0826b30a | 21535 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 21536 | |
976ca316 | 21537 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 21538 | } |
55f1336d | 21539 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21540 | { |
ac9ec31b | 21541 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21542 | |
ac9ec31b | 21543 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21544 | } |
21545 | else | |
21546 | { | |
b98664d3 | 21547 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
21548 | " at %s [in module %s]"), |
21549 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21550 | objfile_name (objfile)); |
ac9ec31b | 21551 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21552 | } |
21553 | ||
21554 | /* If not cached we need to read it in. */ | |
21555 | ||
21556 | if (this_type == NULL) | |
21557 | { | |
ac9ec31b | 21558 | struct die_info *type_die = NULL; |
673bfd45 DE |
21559 | struct dwarf2_cu *type_cu = cu; |
21560 | ||
cd6c91b4 | 21561 | if (attr->form_is_ref ()) |
ac9ec31b DE |
21562 | type_die = follow_die_ref (die, attr, &type_cu); |
21563 | if (type_die == NULL) | |
21564 | return build_error_marker_type (cu, die); | |
21565 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21566 | from an inter-CU reference and the type's CU got expanded before |
21567 | ours. */ | |
ac9ec31b | 21568 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21569 | } |
21570 | ||
21571 | /* If we still don't have a type use an error marker. */ | |
21572 | ||
21573 | if (this_type == NULL) | |
ac9ec31b | 21574 | return build_error_marker_type (cu, die); |
673bfd45 | 21575 | |
f792889a | 21576 | return this_type; |
c906108c SS |
21577 | } |
21578 | ||
673bfd45 DE |
21579 | /* Return the type in DIE, CU. |
21580 | Returns NULL for invalid types. | |
21581 | ||
02142a6c | 21582 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21583 | and only reads the die in if necessary. |
21584 | ||
21585 | NOTE: This can be called when reading in partial or full symbols. */ | |
21586 | ||
f792889a | 21587 | static struct type * |
e7c27a73 | 21588 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21589 | { |
f792889a DJ |
21590 | struct type *this_type; |
21591 | ||
21592 | this_type = get_die_type (die, cu); | |
21593 | if (this_type) | |
21594 | return this_type; | |
21595 | ||
673bfd45 DE |
21596 | return read_type_die_1 (die, cu); |
21597 | } | |
21598 | ||
21599 | /* Read the type in DIE, CU. | |
21600 | Returns NULL for invalid types. */ | |
21601 | ||
21602 | static struct type * | |
21603 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21604 | { | |
21605 | struct type *this_type = NULL; | |
21606 | ||
c906108c SS |
21607 | switch (die->tag) |
21608 | { | |
21609 | case DW_TAG_class_type: | |
680b30c7 | 21610 | case DW_TAG_interface_type: |
c906108c SS |
21611 | case DW_TAG_structure_type: |
21612 | case DW_TAG_union_type: | |
f792889a | 21613 | this_type = read_structure_type (die, cu); |
c906108c SS |
21614 | break; |
21615 | case DW_TAG_enumeration_type: | |
f792889a | 21616 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21617 | break; |
21618 | case DW_TAG_subprogram: | |
21619 | case DW_TAG_subroutine_type: | |
edb3359d | 21620 | case DW_TAG_inlined_subroutine: |
f792889a | 21621 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21622 | break; |
21623 | case DW_TAG_array_type: | |
f792889a | 21624 | this_type = read_array_type (die, cu); |
c906108c | 21625 | break; |
72019c9c | 21626 | case DW_TAG_set_type: |
f792889a | 21627 | this_type = read_set_type (die, cu); |
72019c9c | 21628 | break; |
c906108c | 21629 | case DW_TAG_pointer_type: |
f792889a | 21630 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21631 | break; |
21632 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21633 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21634 | break; |
21635 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21636 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21637 | break; | |
21638 | case DW_TAG_rvalue_reference_type: | |
21639 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21640 | break; |
21641 | case DW_TAG_const_type: | |
f792889a | 21642 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21643 | break; |
21644 | case DW_TAG_volatile_type: | |
f792889a | 21645 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21646 | break; |
06d66ee9 TT |
21647 | case DW_TAG_restrict_type: |
21648 | this_type = read_tag_restrict_type (die, cu); | |
21649 | break; | |
c906108c | 21650 | case DW_TAG_string_type: |
f792889a | 21651 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21652 | break; |
21653 | case DW_TAG_typedef: | |
f792889a | 21654 | this_type = read_typedef (die, cu); |
c906108c | 21655 | break; |
a02abb62 | 21656 | case DW_TAG_subrange_type: |
f792889a | 21657 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21658 | break; |
c906108c | 21659 | case DW_TAG_base_type: |
f792889a | 21660 | this_type = read_base_type (die, cu); |
c906108c | 21661 | break; |
81a17f79 | 21662 | case DW_TAG_unspecified_type: |
f792889a | 21663 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21664 | break; |
0114d602 DJ |
21665 | case DW_TAG_namespace: |
21666 | this_type = read_namespace_type (die, cu); | |
21667 | break; | |
f55ee35c JK |
21668 | case DW_TAG_module: |
21669 | this_type = read_module_type (die, cu); | |
21670 | break; | |
a2c2acaf MW |
21671 | case DW_TAG_atomic_type: |
21672 | this_type = read_tag_atomic_type (die, cu); | |
21673 | break; | |
c906108c | 21674 | default: |
b98664d3 | 21675 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 21676 | dwarf_tag_name (die->tag)); |
c906108c SS |
21677 | break; |
21678 | } | |
63d06c5c | 21679 | |
f792889a | 21680 | return this_type; |
63d06c5c DC |
21681 | } |
21682 | ||
abc72ce4 DE |
21683 | /* See if we can figure out if the class lives in a namespace. We do |
21684 | this by looking for a member function; its demangled name will | |
21685 | contain namespace info, if there is any. | |
21686 | Return the computed name or NULL. | |
21687 | Space for the result is allocated on the objfile's obstack. | |
21688 | This is the full-die version of guess_partial_die_structure_name. | |
21689 | In this case we know DIE has no useful parent. */ | |
21690 | ||
43816ebc | 21691 | static const char * |
abc72ce4 DE |
21692 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
21693 | { | |
21694 | struct die_info *spec_die; | |
21695 | struct dwarf2_cu *spec_cu; | |
21696 | struct die_info *child; | |
5e22e966 | 21697 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
21698 | |
21699 | spec_cu = cu; | |
21700 | spec_die = die_specification (die, &spec_cu); | |
21701 | if (spec_die != NULL) | |
21702 | { | |
21703 | die = spec_die; | |
21704 | cu = spec_cu; | |
21705 | } | |
21706 | ||
21707 | for (child = die->child; | |
21708 | child != NULL; | |
21709 | child = child->sibling) | |
21710 | { | |
21711 | if (child->tag == DW_TAG_subprogram) | |
21712 | { | |
73b9be8b | 21713 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 21714 | |
7d45c7c3 | 21715 | if (linkage_name != NULL) |
abc72ce4 | 21716 | { |
43816ebc | 21717 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 21718 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 21719 | const char *name = NULL; |
abc72ce4 DE |
21720 | |
21721 | if (actual_name != NULL) | |
21722 | { | |
15d034d0 | 21723 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
21724 | |
21725 | if (die_name != NULL | |
43816ebc | 21726 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
21727 | { |
21728 | /* Strip off the class name from the full name. | |
21729 | We want the prefix. */ | |
21730 | int die_name_len = strlen (die_name); | |
43816ebc TT |
21731 | int actual_name_len = strlen (actual_name.get ()); |
21732 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
21733 | |
21734 | /* Test for '::' as a sanity check. */ | |
21735 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 21736 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 21737 | name = obstack_strndup ( |
e3b94546 | 21738 | &objfile->per_bfd->storage_obstack, |
43816ebc | 21739 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
21740 | } |
21741 | } | |
abc72ce4 DE |
21742 | return name; |
21743 | } | |
21744 | } | |
21745 | } | |
21746 | ||
21747 | return NULL; | |
21748 | } | |
21749 | ||
96408a79 SA |
21750 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
21751 | prefix part in such case. See | |
21752 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21753 | ||
a121b7c1 | 21754 | static const char * |
96408a79 SA |
21755 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
21756 | { | |
21757 | struct attribute *attr; | |
e6a959d6 | 21758 | const char *base; |
96408a79 SA |
21759 | |
21760 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
21761 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
21762 | return NULL; | |
21763 | ||
7d45c7c3 | 21764 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
21765 | return NULL; |
21766 | ||
73b9be8b | 21767 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
21768 | if (attr == NULL || DW_STRING (attr) == NULL) |
21769 | return NULL; | |
21770 | ||
21771 | /* dwarf2_name had to be already called. */ | |
21772 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
21773 | ||
21774 | /* Strip the base name, keep any leading namespaces/classes. */ | |
21775 | base = strrchr (DW_STRING (attr), ':'); | |
21776 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
21777 | return ""; | |
21778 | ||
5e22e966 | 21779 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 TT |
21780 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
21781 | DW_STRING (attr), | |
21782 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
21783 | } |
21784 | ||
fdde2d81 | 21785 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 21786 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 21787 | |
0114d602 DJ |
21788 | For example, if we're within the method foo() in the following |
21789 | code: | |
21790 | ||
21791 | namespace N { | |
21792 | class C { | |
21793 | void foo () { | |
21794 | } | |
21795 | }; | |
21796 | } | |
21797 | ||
21798 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 21799 | |
0d5cff50 | 21800 | static const char * |
e142c38c | 21801 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 21802 | { |
976ca316 | 21803 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
21804 | struct die_info *parent, *spec_die; |
21805 | struct dwarf2_cu *spec_cu; | |
21806 | struct type *parent_type; | |
a121b7c1 | 21807 | const char *retval; |
63d06c5c | 21808 | |
9c37b5ae | 21809 | if (cu->language != language_cplus |
c44af4eb TT |
21810 | && cu->language != language_fortran && cu->language != language_d |
21811 | && cu->language != language_rust) | |
0114d602 DJ |
21812 | return ""; |
21813 | ||
96408a79 SA |
21814 | retval = anonymous_struct_prefix (die, cu); |
21815 | if (retval) | |
21816 | return retval; | |
21817 | ||
0114d602 DJ |
21818 | /* We have to be careful in the presence of DW_AT_specification. |
21819 | For example, with GCC 3.4, given the code | |
21820 | ||
21821 | namespace N { | |
21822 | void foo() { | |
21823 | // Definition of N::foo. | |
21824 | } | |
21825 | } | |
21826 | ||
21827 | then we'll have a tree of DIEs like this: | |
21828 | ||
21829 | 1: DW_TAG_compile_unit | |
21830 | 2: DW_TAG_namespace // N | |
21831 | 3: DW_TAG_subprogram // declaration of N::foo | |
21832 | 4: DW_TAG_subprogram // definition of N::foo | |
21833 | DW_AT_specification // refers to die #3 | |
21834 | ||
21835 | Thus, when processing die #4, we have to pretend that we're in | |
21836 | the context of its DW_AT_specification, namely the contex of die | |
21837 | #3. */ | |
21838 | spec_cu = cu; | |
21839 | spec_die = die_specification (die, &spec_cu); | |
21840 | if (spec_die == NULL) | |
21841 | parent = die->parent; | |
21842 | else | |
63d06c5c | 21843 | { |
0114d602 DJ |
21844 | parent = spec_die->parent; |
21845 | cu = spec_cu; | |
63d06c5c | 21846 | } |
0114d602 DJ |
21847 | |
21848 | if (parent == NULL) | |
21849 | return ""; | |
98bfdba5 PA |
21850 | else if (parent->building_fullname) |
21851 | { | |
21852 | const char *name; | |
21853 | const char *parent_name; | |
21854 | ||
21855 | /* It has been seen on RealView 2.2 built binaries, | |
21856 | DW_TAG_template_type_param types actually _defined_ as | |
21857 | children of the parent class: | |
21858 | ||
21859 | enum E {}; | |
21860 | template class <class Enum> Class{}; | |
21861 | Class<enum E> class_e; | |
21862 | ||
21863 | 1: DW_TAG_class_type (Class) | |
21864 | 2: DW_TAG_enumeration_type (E) | |
21865 | 3: DW_TAG_enumerator (enum1:0) | |
21866 | 3: DW_TAG_enumerator (enum2:1) | |
21867 | ... | |
21868 | 2: DW_TAG_template_type_param | |
21869 | DW_AT_type DW_FORM_ref_udata (E) | |
21870 | ||
21871 | Besides being broken debug info, it can put GDB into an | |
21872 | infinite loop. Consider: | |
21873 | ||
21874 | When we're building the full name for Class<E>, we'll start | |
21875 | at Class, and go look over its template type parameters, | |
21876 | finding E. We'll then try to build the full name of E, and | |
21877 | reach here. We're now trying to build the full name of E, | |
21878 | and look over the parent DIE for containing scope. In the | |
21879 | broken case, if we followed the parent DIE of E, we'd again | |
21880 | find Class, and once again go look at its template type | |
21881 | arguments, etc., etc. Simply don't consider such parent die | |
21882 | as source-level parent of this die (it can't be, the language | |
21883 | doesn't allow it), and break the loop here. */ | |
21884 | name = dwarf2_name (die, cu); | |
21885 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 21886 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
21887 | name ? name : "<unknown>", |
21888 | parent_name ? parent_name : "<unknown>"); | |
21889 | return ""; | |
21890 | } | |
63d06c5c | 21891 | else |
0114d602 DJ |
21892 | switch (parent->tag) |
21893 | { | |
63d06c5c | 21894 | case DW_TAG_namespace: |
0114d602 | 21895 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
21896 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
21897 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
21898 | Work around this problem here. */ | |
21899 | if (cu->language == language_cplus | |
7d93a1e0 | 21900 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 21901 | return ""; |
0114d602 | 21902 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 21903 | return parent_type->name (); |
63d06c5c | 21904 | case DW_TAG_class_type: |
680b30c7 | 21905 | case DW_TAG_interface_type: |
63d06c5c | 21906 | case DW_TAG_structure_type: |
0114d602 | 21907 | case DW_TAG_union_type: |
f55ee35c | 21908 | case DW_TAG_module: |
0114d602 | 21909 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
21910 | if (parent_type->name () != NULL) |
21911 | return parent_type->name (); | |
0114d602 DJ |
21912 | else |
21913 | /* An anonymous structure is only allowed non-static data | |
21914 | members; no typedefs, no member functions, et cetera. | |
21915 | So it does not need a prefix. */ | |
21916 | return ""; | |
abc72ce4 | 21917 | case DW_TAG_compile_unit: |
95554aad | 21918 | case DW_TAG_partial_unit: |
abc72ce4 DE |
21919 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
21920 | if (cu->language == language_cplus | |
976ca316 | 21921 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
21922 | && die->child != NULL |
21923 | && (die->tag == DW_TAG_class_type | |
21924 | || die->tag == DW_TAG_structure_type | |
21925 | || die->tag == DW_TAG_union_type)) | |
21926 | { | |
43816ebc | 21927 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
21928 | if (name != NULL) |
21929 | return name; | |
21930 | } | |
21931 | return ""; | |
0a4b0913 AB |
21932 | case DW_TAG_subprogram: |
21933 | /* Nested subroutines in Fortran get a prefix with the name | |
21934 | of the parent's subroutine. */ | |
21935 | if (cu->language == language_fortran) | |
21936 | { | |
21937 | if ((die->tag == DW_TAG_subprogram) | |
21938 | && (dwarf2_name (parent, cu) != NULL)) | |
21939 | return dwarf2_name (parent, cu); | |
21940 | } | |
21941 | return determine_prefix (parent, cu); | |
3d567982 TT |
21942 | case DW_TAG_enumeration_type: |
21943 | parent_type = read_type_die (parent, cu); | |
21944 | if (TYPE_DECLARED_CLASS (parent_type)) | |
21945 | { | |
7d93a1e0 SM |
21946 | if (parent_type->name () != NULL) |
21947 | return parent_type->name (); | |
3d567982 TT |
21948 | return ""; |
21949 | } | |
21950 | /* Fall through. */ | |
63d06c5c | 21951 | default: |
8176b9b8 | 21952 | return determine_prefix (parent, cu); |
63d06c5c | 21953 | } |
63d06c5c DC |
21954 | } |
21955 | ||
3e43a32a MS |
21956 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
21957 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
21958 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
21959 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
21960 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 21961 | |
f55ee35c | 21962 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
21963 | |
21964 | static char * | |
f55ee35c JK |
21965 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
21966 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 21967 | { |
f55ee35c | 21968 | const char *lead = ""; |
5c315b68 | 21969 | const char *sep; |
63d06c5c | 21970 | |
3e43a32a MS |
21971 | if (suffix == NULL || suffix[0] == '\0' |
21972 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 21973 | sep = ""; |
45280282 IB |
21974 | else if (cu->language == language_d) |
21975 | { | |
21976 | /* For D, the 'main' function could be defined in any module, but it | |
21977 | should never be prefixed. */ | |
21978 | if (strcmp (suffix, "D main") == 0) | |
21979 | { | |
21980 | prefix = ""; | |
21981 | sep = ""; | |
21982 | } | |
21983 | else | |
21984 | sep = "."; | |
21985 | } | |
f55ee35c JK |
21986 | else if (cu->language == language_fortran && physname) |
21987 | { | |
21988 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
21989 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
21990 | ||
21991 | lead = "__"; | |
21992 | sep = "_MOD_"; | |
21993 | } | |
987504bb JJ |
21994 | else |
21995 | sep = "::"; | |
63d06c5c | 21996 | |
6dd47d34 DE |
21997 | if (prefix == NULL) |
21998 | prefix = ""; | |
21999 | if (suffix == NULL) | |
22000 | suffix = ""; | |
22001 | ||
987504bb JJ |
22002 | if (obs == NULL) |
22003 | { | |
3e43a32a | 22004 | char *retval |
224c3ddb SM |
22005 | = ((char *) |
22006 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22007 | |
f55ee35c JK |
22008 | strcpy (retval, lead); |
22009 | strcat (retval, prefix); | |
6dd47d34 DE |
22010 | strcat (retval, sep); |
22011 | strcat (retval, suffix); | |
63d06c5c DC |
22012 | return retval; |
22013 | } | |
987504bb JJ |
22014 | else |
22015 | { | |
22016 | /* We have an obstack. */ | |
f55ee35c | 22017 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22018 | } |
63d06c5c DC |
22019 | } |
22020 | ||
71c25dea TT |
22021 | /* Get name of a die, return NULL if not found. */ |
22022 | ||
15d034d0 TT |
22023 | static const char * |
22024 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 22025 | struct objfile *objfile) |
71c25dea TT |
22026 | { |
22027 | if (name && cu->language == language_cplus) | |
22028 | { | |
596dc4ad TT |
22029 | gdb::unique_xmalloc_ptr<char> canon_name |
22030 | = cp_canonicalize_string (name); | |
71c25dea | 22031 | |
596dc4ad TT |
22032 | if (canon_name != nullptr) |
22033 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
22034 | } |
22035 | ||
22036 | return name; | |
c906108c SS |
22037 | } |
22038 | ||
96553a0c DE |
22039 | /* Get name of a die, return NULL if not found. |
22040 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22041 | |
15d034d0 | 22042 | static const char * |
e142c38c | 22043 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22044 | { |
22045 | struct attribute *attr; | |
5e22e966 | 22046 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 22047 | |
e142c38c | 22048 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22049 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22050 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22051 | && die->tag != DW_TAG_class_type |
22052 | && die->tag != DW_TAG_interface_type | |
22053 | && die->tag != DW_TAG_structure_type | |
22054 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22055 | return NULL; |
22056 | ||
22057 | switch (die->tag) | |
22058 | { | |
22059 | case DW_TAG_compile_unit: | |
95554aad | 22060 | case DW_TAG_partial_unit: |
71c25dea TT |
22061 | /* Compilation units have a DW_AT_name that is a filename, not |
22062 | a source language identifier. */ | |
22063 | case DW_TAG_enumeration_type: | |
22064 | case DW_TAG_enumerator: | |
22065 | /* These tags always have simple identifiers already; no need | |
22066 | to canonicalize them. */ | |
22067 | return DW_STRING (attr); | |
907af001 | 22068 | |
96553a0c DE |
22069 | case DW_TAG_namespace: |
22070 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22071 | return DW_STRING (attr); | |
22072 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22073 | ||
907af001 UW |
22074 | case DW_TAG_class_type: |
22075 | case DW_TAG_interface_type: | |
22076 | case DW_TAG_structure_type: | |
22077 | case DW_TAG_union_type: | |
22078 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22079 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22080 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22081 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22082 | if (attr && DW_STRING (attr) |
61012eef GB |
22083 | && (startswith (DW_STRING (attr), "._") |
22084 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22085 | return NULL; |
53832f31 TT |
22086 | |
22087 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22088 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22089 | if (!attr || DW_STRING (attr) == NULL) | |
22090 | { | |
73b9be8b | 22091 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22092 | if (attr == NULL || DW_STRING (attr) == NULL) |
22093 | return NULL; | |
22094 | ||
df5c6c50 JK |
22095 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22096 | call for the same DIE. */ | |
22097 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 22098 | { |
43816ebc TT |
22099 | gdb::unique_xmalloc_ptr<char> demangled |
22100 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
22101 | if (demangled == nullptr) |
22102 | return nullptr; | |
43816ebc | 22103 | |
be1e3d3e | 22104 | DW_STRING (attr) = objfile->intern (demangled.get ()); |
53832f31 | 22105 | DW_STRING_IS_CANONICAL (attr) = 1; |
53832f31 | 22106 | } |
67430cd0 TT |
22107 | |
22108 | /* Strip any leading namespaces/classes, keep only the base name. | |
22109 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22110 | const char *base = strrchr (DW_STRING (attr), ':'); | |
22111 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22112 | return &base[1]; | |
22113 | else | |
22114 | return DW_STRING (attr); | |
53832f31 | 22115 | } |
907af001 UW |
22116 | break; |
22117 | ||
71c25dea | 22118 | default: |
907af001 UW |
22119 | break; |
22120 | } | |
22121 | ||
22122 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22123 | { | |
be1e3d3e TT |
22124 | DW_STRING (attr) = dwarf2_canonicalize_name (DW_STRING (attr), cu, |
22125 | objfile); | |
907af001 | 22126 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22127 | } |
907af001 | 22128 | return DW_STRING (attr); |
9219021c DC |
22129 | } |
22130 | ||
22131 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22132 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22133 | containing the return value on output. */ | |
9219021c DC |
22134 | |
22135 | static struct die_info * | |
f2f0e013 | 22136 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22137 | { |
22138 | struct attribute *attr; | |
9219021c | 22139 | |
f2f0e013 | 22140 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22141 | if (attr == NULL) |
22142 | return NULL; | |
22143 | ||
f2f0e013 | 22144 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22145 | } |
22146 | ||
f9aca02d | 22147 | static void |
d97bc12b | 22148 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22149 | { |
22150 | unsigned int i; | |
22151 | ||
d97bc12b | 22152 | print_spaces (indent, f); |
9d8780f0 | 22153 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22154 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22155 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22156 | |
22157 | if (die->parent != NULL) | |
22158 | { | |
22159 | print_spaces (indent, f); | |
9d8780f0 SM |
22160 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22161 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22162 | } |
22163 | ||
22164 | print_spaces (indent, f); | |
22165 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22166 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22167 | |
d97bc12b DE |
22168 | print_spaces (indent, f); |
22169 | fprintf_unfiltered (f, " attributes:\n"); | |
22170 | ||
c906108c SS |
22171 | for (i = 0; i < die->num_attrs; ++i) |
22172 | { | |
d97bc12b DE |
22173 | print_spaces (indent, f); |
22174 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22175 | dwarf_attr_name (die->attrs[i].name), |
22176 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22177 | |
c906108c SS |
22178 | switch (die->attrs[i].form) |
22179 | { | |
c906108c | 22180 | case DW_FORM_addr: |
336d760d | 22181 | case DW_FORM_addrx: |
3019eac3 | 22182 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22183 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22184 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22185 | break; |
22186 | case DW_FORM_block2: | |
22187 | case DW_FORM_block4: | |
22188 | case DW_FORM_block: | |
22189 | case DW_FORM_block1: | |
56eb65bd SP |
22190 | fprintf_unfiltered (f, "block: size %s", |
22191 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22192 | break; |
2dc7f7b3 | 22193 | case DW_FORM_exprloc: |
56eb65bd SP |
22194 | fprintf_unfiltered (f, "expression: size %s", |
22195 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22196 | break; |
0224619f JK |
22197 | case DW_FORM_data16: |
22198 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22199 | break; | |
4568ecf9 DE |
22200 | case DW_FORM_ref_addr: |
22201 | fprintf_unfiltered (f, "ref address: "); | |
22202 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22203 | break; | |
36586728 TT |
22204 | case DW_FORM_GNU_ref_alt: |
22205 | fprintf_unfiltered (f, "alt ref address: "); | |
22206 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22207 | break; | |
10b3939b DJ |
22208 | case DW_FORM_ref1: |
22209 | case DW_FORM_ref2: | |
22210 | case DW_FORM_ref4: | |
4568ecf9 DE |
22211 | case DW_FORM_ref8: |
22212 | case DW_FORM_ref_udata: | |
d97bc12b | 22213 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22214 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22215 | break; |
c906108c SS |
22216 | case DW_FORM_data1: |
22217 | case DW_FORM_data2: | |
22218 | case DW_FORM_data4: | |
ce5d95e1 | 22219 | case DW_FORM_data8: |
c906108c SS |
22220 | case DW_FORM_udata: |
22221 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22222 | fprintf_unfiltered (f, "constant: %s", |
22223 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22224 | break; |
2dc7f7b3 TT |
22225 | case DW_FORM_sec_offset: |
22226 | fprintf_unfiltered (f, "section offset: %s", | |
22227 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22228 | break; | |
55f1336d | 22229 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22230 | fprintf_unfiltered (f, "signature: %s", |
22231 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22232 | break; |
c906108c | 22233 | case DW_FORM_string: |
4bdf3d34 | 22234 | case DW_FORM_strp: |
43988095 | 22235 | case DW_FORM_line_strp: |
cf532bd1 | 22236 | case DW_FORM_strx: |
3019eac3 | 22237 | case DW_FORM_GNU_str_index: |
36586728 | 22238 | case DW_FORM_GNU_strp_alt: |
8285870a | 22239 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22240 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22241 | ? DW_STRING (&die->attrs[i]) : "", |
22242 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22243 | break; |
22244 | case DW_FORM_flag: | |
22245 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22246 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22247 | else |
d97bc12b | 22248 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22249 | break; |
2dc7f7b3 TT |
22250 | case DW_FORM_flag_present: |
22251 | fprintf_unfiltered (f, "flag: TRUE"); | |
22252 | break; | |
a8329558 | 22253 | case DW_FORM_indirect: |
0963b4bd MS |
22254 | /* The reader will have reduced the indirect form to |
22255 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 22256 | fprintf_unfiltered (f, |
3e43a32a | 22257 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 22258 | break; |
663c44ac JK |
22259 | case DW_FORM_implicit_const: |
22260 | fprintf_unfiltered (f, "constant: %s", | |
22261 | plongest (DW_SND (&die->attrs[i]))); | |
22262 | break; | |
c906108c | 22263 | default: |
d97bc12b | 22264 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22265 | die->attrs[i].form); |
d97bc12b | 22266 | break; |
c906108c | 22267 | } |
d97bc12b | 22268 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22269 | } |
22270 | } | |
22271 | ||
f9aca02d | 22272 | static void |
d97bc12b | 22273 | dump_die_for_error (struct die_info *die) |
c906108c | 22274 | { |
d97bc12b DE |
22275 | dump_die_shallow (gdb_stderr, 0, die); |
22276 | } | |
22277 | ||
22278 | static void | |
22279 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22280 | { | |
22281 | int indent = level * 4; | |
22282 | ||
22283 | gdb_assert (die != NULL); | |
22284 | ||
22285 | if (level >= max_level) | |
22286 | return; | |
22287 | ||
22288 | dump_die_shallow (f, indent, die); | |
22289 | ||
22290 | if (die->child != NULL) | |
c906108c | 22291 | { |
d97bc12b DE |
22292 | print_spaces (indent, f); |
22293 | fprintf_unfiltered (f, " Children:"); | |
22294 | if (level + 1 < max_level) | |
22295 | { | |
22296 | fprintf_unfiltered (f, "\n"); | |
22297 | dump_die_1 (f, level + 1, max_level, die->child); | |
22298 | } | |
22299 | else | |
22300 | { | |
3e43a32a MS |
22301 | fprintf_unfiltered (f, |
22302 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22303 | } |
22304 | } | |
22305 | ||
22306 | if (die->sibling != NULL && level > 0) | |
22307 | { | |
22308 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22309 | } |
22310 | } | |
22311 | ||
d97bc12b DE |
22312 | /* This is called from the pdie macro in gdbinit.in. |
22313 | It's not static so gcc will keep a copy callable from gdb. */ | |
22314 | ||
22315 | void | |
22316 | dump_die (struct die_info *die, int max_level) | |
22317 | { | |
22318 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22319 | } | |
22320 | ||
f9aca02d | 22321 | static void |
51545339 | 22322 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22323 | { |
51545339 | 22324 | void **slot; |
c906108c | 22325 | |
9c541725 PA |
22326 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22327 | to_underlying (die->sect_off), | |
b64f50a1 | 22328 | INSERT); |
51545339 DJ |
22329 | |
22330 | *slot = die; | |
c906108c SS |
22331 | } |
22332 | ||
348e048f DE |
22333 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22334 | On entry *REF_CU is the CU of SRC_DIE. | |
22335 | On exit *REF_CU is the CU of the result. */ | |
22336 | ||
22337 | static struct die_info * | |
ff39bb5e | 22338 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22339 | struct dwarf2_cu **ref_cu) |
22340 | { | |
22341 | struct die_info *die; | |
22342 | ||
cd6c91b4 | 22343 | if (attr->form_is_ref ()) |
348e048f | 22344 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22345 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22346 | die = follow_die_sig (src_die, attr, ref_cu); |
22347 | else | |
22348 | { | |
22349 | dump_die_for_error (src_die); | |
22350 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 22351 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
22352 | } |
22353 | ||
22354 | return die; | |
03dd20cc DJ |
22355 | } |
22356 | ||
5c631832 | 22357 | /* Follow reference OFFSET. |
673bfd45 DE |
22358 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22359 | On exit *REF_CU is the CU of the result. | |
22360 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22361 | |
f9aca02d | 22362 | static struct die_info * |
9c541725 | 22363 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22364 | struct dwarf2_cu **ref_cu) |
c906108c | 22365 | { |
10b3939b | 22366 | struct die_info temp_die; |
f2f0e013 | 22367 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 22368 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 22369 | |
348e048f DE |
22370 | gdb_assert (cu->per_cu != NULL); |
22371 | ||
98bfdba5 PA |
22372 | target_cu = cu; |
22373 | ||
3019eac3 | 22374 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22375 | { |
22376 | /* .debug_types CUs cannot reference anything outside their CU. | |
22377 | If they need to, they have to reference a signatured type via | |
55f1336d | 22378 | DW_FORM_ref_sig8. */ |
4057dfde | 22379 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 22380 | return NULL; |
348e048f | 22381 | } |
36586728 | 22382 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 22383 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
22384 | { |
22385 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22386 | |
9c541725 | 22387 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 22388 | per_objfile); |
03dd20cc DJ |
22389 | |
22390 | /* If necessary, add it to the queue and load its DIEs. */ | |
976ca316 SM |
22391 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
22392 | load_full_comp_unit (per_cu, per_objfile, false, cu->language); | |
03dd20cc | 22393 | |
976ca316 | 22394 | target_cu = per_objfile->get_cu (per_cu); |
10b3939b | 22395 | } |
98bfdba5 PA |
22396 | else if (cu->dies == NULL) |
22397 | { | |
22398 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 SM |
22399 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
22400 | load_full_comp_unit (cu->per_cu, per_objfile, false, language_minimal); | |
98bfdba5 | 22401 | } |
c906108c | 22402 | |
f2f0e013 | 22403 | *ref_cu = target_cu; |
9c541725 | 22404 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22405 | |
22406 | if (target_cu != cu) | |
22407 | target_cu->ancestor = cu; | |
22408 | ||
9a3c8263 | 22409 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22410 | &temp_die, |
22411 | to_underlying (sect_off)); | |
5c631832 | 22412 | } |
10b3939b | 22413 | |
5c631832 JK |
22414 | /* Follow reference attribute ATTR of SRC_DIE. |
22415 | On entry *REF_CU is the CU of SRC_DIE. | |
22416 | On exit *REF_CU is the CU of the result. */ | |
22417 | ||
22418 | static struct die_info * | |
ff39bb5e | 22419 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22420 | struct dwarf2_cu **ref_cu) |
22421 | { | |
0826b30a | 22422 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
22423 | struct dwarf2_cu *cu = *ref_cu; |
22424 | struct die_info *die; | |
22425 | ||
9c541725 | 22426 | die = follow_die_offset (sect_off, |
36586728 TT |
22427 | (attr->form == DW_FORM_GNU_ref_alt |
22428 | || cu->per_cu->is_dwz), | |
22429 | ref_cu); | |
5c631832 | 22430 | if (!die) |
9d8780f0 SM |
22431 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22432 | "at %s [in module %s]"), | |
22433 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22434 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 22435 | |
5c631832 JK |
22436 | return die; |
22437 | } | |
22438 | ||
d4c9a4f8 | 22439 | /* See read.h. */ |
5c631832 JK |
22440 | |
22441 | struct dwarf2_locexpr_baton | |
9c541725 | 22442 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22443 | dwarf2_per_cu_data *per_cu, |
976ca316 | 22444 | dwarf2_per_objfile *per_objfile, |
8b9737bf | 22445 | CORE_ADDR (*get_frame_pc) (void *baton), |
e4a62c65 | 22446 | void *baton, bool resolve_abstract_p) |
5c631832 | 22447 | { |
5c631832 JK |
22448 | struct die_info *die; |
22449 | struct attribute *attr; | |
22450 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 22451 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 22452 | |
976ca316 | 22453 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 22454 | if (cu == nullptr) |
976ca316 | 22455 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
22456 | |
22457 | if (cu == nullptr) | |
cc12ce38 DE |
22458 | { |
22459 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22460 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22461 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22462 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22463 | } |
918dd910 | 22464 | |
9c541725 | 22465 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22466 | if (!die) |
9d8780f0 SM |
22467 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22468 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
22469 | |
22470 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 22471 | if (!attr && resolve_abstract_p |
976ca316 SM |
22472 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
22473 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 TV |
22474 | { |
22475 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 22476 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 22477 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 22478 | |
3360b6e7 | 22479 | for (const auto &cand_off |
976ca316 | 22480 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 22481 | { |
3360b6e7 TV |
22482 | struct dwarf2_cu *cand_cu = cu; |
22483 | struct die_info *cand | |
22484 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
22485 | if (!cand | |
22486 | || !cand->parent | |
e4a62c65 TV |
22487 | || cand->parent->tag != DW_TAG_subprogram) |
22488 | continue; | |
22489 | ||
22490 | CORE_ADDR pc_low, pc_high; | |
22491 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
22492 | if (pc_low == ((CORE_ADDR) -1)) |
22493 | continue; | |
22494 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
22495 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
22496 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
22497 | continue; |
22498 | ||
22499 | die = cand; | |
22500 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22501 | break; | |
22502 | } | |
22503 | } | |
22504 | ||
5c631832 JK |
22505 | if (!attr) |
22506 | { | |
e103e986 JK |
22507 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22508 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22509 | |
e103e986 | 22510 | retval.data = NULL; |
5c631832 JK |
22511 | retval.size = 0; |
22512 | } | |
cd6c91b4 | 22513 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
22514 | { |
22515 | struct dwarf2_loclist_baton loclist_baton; | |
22516 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
22517 | size_t size; | |
22518 | ||
22519 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
22520 | ||
22521 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
22522 | &size, pc); | |
22523 | retval.size = size; | |
22524 | } | |
5c631832 JK |
22525 | else |
22526 | { | |
4fc6c0d5 | 22527 | if (!attr->form_is_block ()) |
9d8780f0 | 22528 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 22529 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 22530 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
22531 | |
22532 | retval.data = DW_BLOCK (attr)->data; | |
22533 | retval.size = DW_BLOCK (attr)->size; | |
22534 | } | |
976ca316 | 22535 | retval.per_objfile = per_objfile; |
5c631832 | 22536 | retval.per_cu = cu->per_cu; |
918dd910 | 22537 | |
976ca316 | 22538 | per_objfile->age_comp_units (); |
918dd910 | 22539 | |
5c631832 | 22540 | return retval; |
348e048f DE |
22541 | } |
22542 | ||
d4c9a4f8 | 22543 | /* See read.h. */ |
8b9737bf TT |
22544 | |
22545 | struct dwarf2_locexpr_baton | |
22546 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 22547 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22548 | dwarf2_per_objfile *per_objfile, |
8b9737bf TT |
22549 | CORE_ADDR (*get_frame_pc) (void *baton), |
22550 | void *baton) | |
22551 | { | |
9c541725 | 22552 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 22553 | |
14095eb3 SM |
22554 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
22555 | get_frame_pc, baton); | |
8b9737bf TT |
22556 | } |
22557 | ||
b6807d98 TT |
22558 | /* Write a constant of a given type as target-ordered bytes into |
22559 | OBSTACK. */ | |
22560 | ||
22561 | static const gdb_byte * | |
22562 | write_constant_as_bytes (struct obstack *obstack, | |
22563 | enum bfd_endian byte_order, | |
22564 | struct type *type, | |
22565 | ULONGEST value, | |
22566 | LONGEST *len) | |
22567 | { | |
22568 | gdb_byte *result; | |
22569 | ||
22570 | *len = TYPE_LENGTH (type); | |
224c3ddb | 22571 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22572 | store_unsigned_integer (result, *len, byte_order, value); |
22573 | ||
22574 | return result; | |
22575 | } | |
22576 | ||
d4c9a4f8 | 22577 | /* See read.h. */ |
b6807d98 TT |
22578 | |
22579 | const gdb_byte * | |
9c541725 | 22580 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 22581 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22582 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 22583 | obstack *obstack, |
b6807d98 TT |
22584 | LONGEST *len) |
22585 | { | |
b6807d98 TT |
22586 | struct die_info *die; |
22587 | struct attribute *attr; | |
22588 | const gdb_byte *result = NULL; | |
22589 | struct type *type; | |
22590 | LONGEST value; | |
22591 | enum bfd_endian byte_order; | |
14095eb3 | 22592 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 22593 | |
7188ed02 | 22594 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
22595 | if (cu == nullptr) |
22596 | cu = load_cu (per_cu, per_objfile, false); | |
22597 | ||
22598 | if (cu == nullptr) | |
cc12ce38 DE |
22599 | { |
22600 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22601 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22602 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22603 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22604 | } |
b6807d98 | 22605 | |
9c541725 | 22606 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 22607 | if (!die) |
9d8780f0 SM |
22608 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22609 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
22610 | |
22611 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
22612 | if (attr == NULL) | |
22613 | return NULL; | |
22614 | ||
e3b94546 | 22615 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
22616 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
22617 | ||
22618 | switch (attr->form) | |
22619 | { | |
22620 | case DW_FORM_addr: | |
336d760d | 22621 | case DW_FORM_addrx: |
b6807d98 TT |
22622 | case DW_FORM_GNU_addr_index: |
22623 | { | |
22624 | gdb_byte *tem; | |
22625 | ||
22626 | *len = cu->header.addr_size; | |
224c3ddb | 22627 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22628 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
22629 | result = tem; | |
22630 | } | |
22631 | break; | |
22632 | case DW_FORM_string: | |
22633 | case DW_FORM_strp: | |
cf532bd1 | 22634 | case DW_FORM_strx: |
b6807d98 TT |
22635 | case DW_FORM_GNU_str_index: |
22636 | case DW_FORM_GNU_strp_alt: | |
22637 | /* DW_STRING is already allocated on the objfile obstack, point | |
22638 | directly to it. */ | |
22639 | result = (const gdb_byte *) DW_STRING (attr); | |
22640 | *len = strlen (DW_STRING (attr)); | |
22641 | break; | |
22642 | case DW_FORM_block1: | |
22643 | case DW_FORM_block2: | |
22644 | case DW_FORM_block4: | |
22645 | case DW_FORM_block: | |
22646 | case DW_FORM_exprloc: | |
0224619f | 22647 | case DW_FORM_data16: |
b6807d98 TT |
22648 | result = DW_BLOCK (attr)->data; |
22649 | *len = DW_BLOCK (attr)->size; | |
22650 | break; | |
22651 | ||
22652 | /* The DW_AT_const_value attributes are supposed to carry the | |
22653 | symbol's value "represented as it would be on the target | |
22654 | architecture." By the time we get here, it's already been | |
22655 | converted to host endianness, so we just need to sign- or | |
22656 | zero-extend it as appropriate. */ | |
22657 | case DW_FORM_data1: | |
22658 | type = die_type (die, cu); | |
22659 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
22660 | if (result == NULL) | |
22661 | result = write_constant_as_bytes (obstack, byte_order, | |
22662 | type, value, len); | |
22663 | break; | |
22664 | case DW_FORM_data2: | |
22665 | type = die_type (die, cu); | |
22666 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
22667 | if (result == NULL) | |
22668 | result = write_constant_as_bytes (obstack, byte_order, | |
22669 | type, value, len); | |
22670 | break; | |
22671 | case DW_FORM_data4: | |
22672 | type = die_type (die, cu); | |
22673 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
22674 | if (result == NULL) | |
22675 | result = write_constant_as_bytes (obstack, byte_order, | |
22676 | type, value, len); | |
22677 | break; | |
22678 | case DW_FORM_data8: | |
22679 | type = die_type (die, cu); | |
22680 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
22681 | if (result == NULL) | |
22682 | result = write_constant_as_bytes (obstack, byte_order, | |
22683 | type, value, len); | |
22684 | break; | |
22685 | ||
22686 | case DW_FORM_sdata: | |
663c44ac | 22687 | case DW_FORM_implicit_const: |
b6807d98 TT |
22688 | type = die_type (die, cu); |
22689 | result = write_constant_as_bytes (obstack, byte_order, | |
22690 | type, DW_SND (attr), len); | |
22691 | break; | |
22692 | ||
22693 | case DW_FORM_udata: | |
22694 | type = die_type (die, cu); | |
22695 | result = write_constant_as_bytes (obstack, byte_order, | |
22696 | type, DW_UNSND (attr), len); | |
22697 | break; | |
22698 | ||
22699 | default: | |
b98664d3 | 22700 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
22701 | dwarf_form_name (attr->form)); |
22702 | break; | |
22703 | } | |
22704 | ||
22705 | return result; | |
22706 | } | |
22707 | ||
d4c9a4f8 | 22708 | /* See read.h. */ |
7942e96e AA |
22709 | |
22710 | struct type * | |
9c541725 | 22711 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
22712 | dwarf2_per_cu_data *per_cu, |
22713 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 22714 | { |
7942e96e AA |
22715 | struct die_info *die; |
22716 | ||
7188ed02 | 22717 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
22718 | if (cu == nullptr) |
22719 | cu = load_cu (per_cu, per_objfile, false); | |
22720 | ||
22721 | if (cu == nullptr) | |
22722 | return nullptr; | |
7942e96e | 22723 | |
9c541725 | 22724 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
22725 | if (!die) |
22726 | return NULL; | |
22727 | ||
22728 | return die_type (die, cu); | |
22729 | } | |
22730 | ||
8cb5117c | 22731 | /* See read.h. */ |
8a9b8146 TT |
22732 | |
22733 | struct type * | |
b64f50a1 | 22734 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
22735 | dwarf2_per_cu_data *per_cu, |
22736 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 22737 | { |
9c541725 | 22738 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 22739 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
22740 | } |
22741 | ||
ac9ec31b | 22742 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 22743 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
22744 | On exit *REF_CU is the CU of the result. |
22745 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
22746 | |
22747 | static struct die_info * | |
ac9ec31b DE |
22748 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
22749 | struct dwarf2_cu **ref_cu) | |
348e048f | 22750 | { |
348e048f | 22751 | struct die_info temp_die; |
c24bdb02 | 22752 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 22753 | struct die_info *die; |
976ca316 | 22754 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 22755 | |
348e048f | 22756 | |
ac9ec31b DE |
22757 | /* While it might be nice to assert sig_type->type == NULL here, |
22758 | we can get here for DW_AT_imported_declaration where we need | |
22759 | the DIE not the type. */ | |
348e048f DE |
22760 | |
22761 | /* If necessary, add it to the queue and load its DIEs. */ | |
22762 | ||
976ca316 | 22763 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, per_objfile, |
120ce1b5 | 22764 | language_minimal)) |
976ca316 | 22765 | read_signatured_type (sig_type, per_objfile); |
348e048f | 22766 | |
976ca316 | 22767 | sig_cu = per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 22768 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
22769 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
22770 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 22771 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 22772 | to_underlying (temp_die.sect_off)); |
348e048f DE |
22773 | if (die) |
22774 | { | |
796a7ff8 DE |
22775 | /* For .gdb_index version 7 keep track of included TUs. |
22776 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
22777 | if (per_objfile->per_bfd->index_table != NULL |
22778 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 22779 | { |
ae640021 | 22780 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
22781 | } |
22782 | ||
348e048f | 22783 | *ref_cu = sig_cu; |
c24bdb02 KS |
22784 | if (sig_cu != cu) |
22785 | sig_cu->ancestor = cu; | |
22786 | ||
348e048f DE |
22787 | return die; |
22788 | } | |
22789 | ||
ac9ec31b DE |
22790 | return NULL; |
22791 | } | |
22792 | ||
22793 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
22794 | On entry *REF_CU is the CU of SRC_DIE. | |
22795 | On exit *REF_CU is the CU of the result. | |
22796 | The result is the DIE of the type. | |
22797 | If the referenced type cannot be found an error is thrown. */ | |
22798 | ||
22799 | static struct die_info * | |
ff39bb5e | 22800 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
22801 | struct dwarf2_cu **ref_cu) |
22802 | { | |
22803 | ULONGEST signature = DW_SIGNATURE (attr); | |
22804 | struct signatured_type *sig_type; | |
22805 | struct die_info *die; | |
22806 | ||
22807 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
22808 | ||
a2ce51a0 | 22809 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
22810 | /* sig_type will be NULL if the signatured type is missing from |
22811 | the debug info. */ | |
22812 | if (sig_type == NULL) | |
22813 | { | |
22814 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
22815 | " from DIE at %s [in module %s]"), |
22816 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22817 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22818 | } |
22819 | ||
22820 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
22821 | if (die == NULL) | |
22822 | { | |
22823 | dump_die_for_error (src_die); | |
22824 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
22825 | " from DIE at %s [in module %s]"), |
22826 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22827 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22828 | } |
22829 | ||
22830 | return die; | |
22831 | } | |
22832 | ||
22833 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
22834 | reading in and processing the type unit if necessary. */ | |
22835 | ||
22836 | static struct type * | |
22837 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
22838 | struct dwarf2_cu *cu) | |
22839 | { | |
976ca316 | 22840 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
22841 | struct signatured_type *sig_type; |
22842 | struct dwarf2_cu *type_cu; | |
22843 | struct die_info *type_die; | |
22844 | struct type *type; | |
22845 | ||
a2ce51a0 | 22846 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
22847 | /* sig_type will be NULL if the signatured type is missing from |
22848 | the debug info. */ | |
22849 | if (sig_type == NULL) | |
22850 | { | |
b98664d3 | 22851 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
22852 | " from DIE at %s [in module %s]"), |
22853 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 22854 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
22855 | return build_error_marker_type (cu, die); |
22856 | } | |
22857 | ||
22858 | /* If we already know the type we're done. */ | |
976ca316 | 22859 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
22860 | if (type != nullptr) |
22861 | return type; | |
ac9ec31b DE |
22862 | |
22863 | type_cu = cu; | |
22864 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
22865 | if (type_die != NULL) | |
22866 | { | |
22867 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
22868 | is created. This is important, for example, because for c++ classes | |
22869 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
22870 | type = read_type_die (type_die, type_cu); | |
22871 | if (type == NULL) | |
22872 | { | |
b98664d3 | 22873 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
22874 | " referenced from DIE at %s [in module %s]"), |
22875 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 22876 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
22877 | type = build_error_marker_type (cu, die); |
22878 | } | |
22879 | } | |
22880 | else | |
22881 | { | |
b98664d3 | 22882 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
22883 | " from DIE at %s [in module %s]"), |
22884 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 22885 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
22886 | type = build_error_marker_type (cu, die); |
22887 | } | |
e286671b | 22888 | |
976ca316 | 22889 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
22890 | |
22891 | return type; | |
22892 | } | |
22893 | ||
22894 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
22895 | reading in and processing the type unit if necessary. */ | |
22896 | ||
22897 | static struct type * | |
ff39bb5e | 22898 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 22899 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
22900 | { |
22901 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 22902 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22903 | { |
22904 | struct dwarf2_cu *type_cu = cu; | |
22905 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
22906 | ||
22907 | return read_type_die (type_die, type_cu); | |
22908 | } | |
22909 | else if (attr->form == DW_FORM_ref_sig8) | |
22910 | { | |
22911 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
22912 | } | |
22913 | else | |
22914 | { | |
976ca316 | 22915 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 22916 | |
b98664d3 | 22917 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
22918 | " at %s [in module %s]"), |
22919 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 22920 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
22921 | return build_error_marker_type (cu, die); |
22922 | } | |
348e048f DE |
22923 | } |
22924 | ||
e5fe5e75 | 22925 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
22926 | |
22927 | static void | |
ab432490 SM |
22928 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
22929 | dwarf2_per_objfile *per_objfile) | |
348e048f | 22930 | { |
52dc124a | 22931 | struct signatured_type *sig_type; |
348e048f | 22932 | |
f4dc4d17 | 22933 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 22934 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 22935 | |
6721b2ec DE |
22936 | /* We have the per_cu, but we need the signatured_type. |
22937 | Fortunately this is an easy translation. */ | |
22938 | gdb_assert (per_cu->is_debug_types); | |
22939 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 22940 | |
7188ed02 | 22941 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 22942 | |
ab432490 | 22943 | read_signatured_type (sig_type, per_objfile); |
348e048f | 22944 | |
7188ed02 | 22945 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
22946 | } |
22947 | ||
3019eac3 DE |
22948 | /* Read in a signatured type and build its CU and DIEs. |
22949 | If the type is a stub for the real type in a DWO file, | |
22950 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
22951 | |
22952 | static void | |
ab432490 SM |
22953 | read_signatured_type (signatured_type *sig_type, |
22954 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
22955 | { |
22956 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 22957 | |
3019eac3 | 22958 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 22959 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 22960 | |
2e671100 | 22961 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
22962 | |
22963 | if (!reader.dummy_p) | |
22964 | { | |
22965 | struct dwarf2_cu *cu = reader.cu; | |
22966 | const gdb_byte *info_ptr = reader.info_ptr; | |
22967 | ||
22968 | gdb_assert (cu->die_hash == NULL); | |
22969 | cu->die_hash = | |
22970 | htab_create_alloc_ex (cu->header.length / 12, | |
22971 | die_hash, | |
22972 | die_eq, | |
22973 | NULL, | |
22974 | &cu->comp_unit_obstack, | |
22975 | hashtab_obstack_allocate, | |
22976 | dummy_obstack_deallocate); | |
22977 | ||
3e225074 | 22978 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
22979 | reader.comp_unit_die->child |
22980 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
22981 | reader.comp_unit_die); | |
22982 | cu->dies = reader.comp_unit_die; | |
22983 | /* comp_unit_die is not stored in die_hash, no need. */ | |
22984 | ||
22985 | /* We try not to read any attributes in this function, because | |
22986 | not all CUs needed for references have been loaded yet, and | |
22987 | symbol table processing isn't initialized. But we have to | |
22988 | set the CU language, or we won't be able to build types | |
22989 | correctly. Similarly, if we do not read the producer, we can | |
22990 | not apply producer-specific interpretation. */ | |
22991 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
22992 | |
22993 | reader.keep (); | |
c0ab21c2 TT |
22994 | } |
22995 | ||
7ee85ab1 | 22996 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
22997 | } |
22998 | ||
c906108c SS |
22999 | /* Decode simple location descriptions. |
23000 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
23001 | the location and return the value. If COMPUTED is non-null, it is |
23002 | set to true to indicate that decoding was successful, and false | |
23003 | otherwise. If COMPUTED is null, then this function may emit a | |
23004 | complaint. */ | |
c906108c SS |
23005 | |
23006 | static CORE_ADDR | |
7d79de9a | 23007 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 23008 | { |
5e22e966 | 23009 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
23010 | size_t i; |
23011 | size_t size = blk->size; | |
d521ce57 | 23012 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23013 | CORE_ADDR stack[64]; |
23014 | int stacki; | |
23015 | unsigned int bytes_read, unsnd; | |
23016 | gdb_byte op; | |
c906108c | 23017 | |
7d79de9a TT |
23018 | if (computed != nullptr) |
23019 | *computed = false; | |
23020 | ||
21ae7a4d JK |
23021 | i = 0; |
23022 | stacki = 0; | |
23023 | stack[stacki] = 0; | |
23024 | stack[++stacki] = 0; | |
23025 | ||
23026 | while (i < size) | |
23027 | { | |
23028 | op = data[i++]; | |
23029 | switch (op) | |
23030 | { | |
23031 | case DW_OP_lit0: | |
23032 | case DW_OP_lit1: | |
23033 | case DW_OP_lit2: | |
23034 | case DW_OP_lit3: | |
23035 | case DW_OP_lit4: | |
23036 | case DW_OP_lit5: | |
23037 | case DW_OP_lit6: | |
23038 | case DW_OP_lit7: | |
23039 | case DW_OP_lit8: | |
23040 | case DW_OP_lit9: | |
23041 | case DW_OP_lit10: | |
23042 | case DW_OP_lit11: | |
23043 | case DW_OP_lit12: | |
23044 | case DW_OP_lit13: | |
23045 | case DW_OP_lit14: | |
23046 | case DW_OP_lit15: | |
23047 | case DW_OP_lit16: | |
23048 | case DW_OP_lit17: | |
23049 | case DW_OP_lit18: | |
23050 | case DW_OP_lit19: | |
23051 | case DW_OP_lit20: | |
23052 | case DW_OP_lit21: | |
23053 | case DW_OP_lit22: | |
23054 | case DW_OP_lit23: | |
23055 | case DW_OP_lit24: | |
23056 | case DW_OP_lit25: | |
23057 | case DW_OP_lit26: | |
23058 | case DW_OP_lit27: | |
23059 | case DW_OP_lit28: | |
23060 | case DW_OP_lit29: | |
23061 | case DW_OP_lit30: | |
23062 | case DW_OP_lit31: | |
23063 | stack[++stacki] = op - DW_OP_lit0; | |
23064 | break; | |
f1bea926 | 23065 | |
21ae7a4d JK |
23066 | case DW_OP_reg0: |
23067 | case DW_OP_reg1: | |
23068 | case DW_OP_reg2: | |
23069 | case DW_OP_reg3: | |
23070 | case DW_OP_reg4: | |
23071 | case DW_OP_reg5: | |
23072 | case DW_OP_reg6: | |
23073 | case DW_OP_reg7: | |
23074 | case DW_OP_reg8: | |
23075 | case DW_OP_reg9: | |
23076 | case DW_OP_reg10: | |
23077 | case DW_OP_reg11: | |
23078 | case DW_OP_reg12: | |
23079 | case DW_OP_reg13: | |
23080 | case DW_OP_reg14: | |
23081 | case DW_OP_reg15: | |
23082 | case DW_OP_reg16: | |
23083 | case DW_OP_reg17: | |
23084 | case DW_OP_reg18: | |
23085 | case DW_OP_reg19: | |
23086 | case DW_OP_reg20: | |
23087 | case DW_OP_reg21: | |
23088 | case DW_OP_reg22: | |
23089 | case DW_OP_reg23: | |
23090 | case DW_OP_reg24: | |
23091 | case DW_OP_reg25: | |
23092 | case DW_OP_reg26: | |
23093 | case DW_OP_reg27: | |
23094 | case DW_OP_reg28: | |
23095 | case DW_OP_reg29: | |
23096 | case DW_OP_reg30: | |
23097 | case DW_OP_reg31: | |
23098 | stack[++stacki] = op - DW_OP_reg0; | |
23099 | if (i < size) | |
7d79de9a TT |
23100 | { |
23101 | if (computed == nullptr) | |
23102 | dwarf2_complex_location_expr_complaint (); | |
23103 | else | |
23104 | return 0; | |
23105 | } | |
21ae7a4d | 23106 | break; |
c906108c | 23107 | |
21ae7a4d JK |
23108 | case DW_OP_regx: |
23109 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23110 | i += bytes_read; | |
23111 | stack[++stacki] = unsnd; | |
23112 | if (i < size) | |
7d79de9a TT |
23113 | { |
23114 | if (computed == nullptr) | |
23115 | dwarf2_complex_location_expr_complaint (); | |
23116 | else | |
23117 | return 0; | |
23118 | } | |
21ae7a4d | 23119 | break; |
c906108c | 23120 | |
21ae7a4d | 23121 | case DW_OP_addr: |
c8a7a66f TT |
23122 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
23123 | &bytes_read); | |
21ae7a4d JK |
23124 | i += bytes_read; |
23125 | break; | |
d53d4ac5 | 23126 | |
21ae7a4d JK |
23127 | case DW_OP_const1u: |
23128 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23129 | i += 1; | |
23130 | break; | |
23131 | ||
23132 | case DW_OP_const1s: | |
23133 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23134 | i += 1; | |
23135 | break; | |
23136 | ||
23137 | case DW_OP_const2u: | |
23138 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23139 | i += 2; | |
23140 | break; | |
23141 | ||
23142 | case DW_OP_const2s: | |
23143 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23144 | i += 2; | |
23145 | break; | |
d53d4ac5 | 23146 | |
21ae7a4d JK |
23147 | case DW_OP_const4u: |
23148 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23149 | i += 4; | |
23150 | break; | |
23151 | ||
23152 | case DW_OP_const4s: | |
23153 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23154 | i += 4; | |
23155 | break; | |
23156 | ||
585861ea JK |
23157 | case DW_OP_const8u: |
23158 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23159 | i += 8; | |
23160 | break; | |
23161 | ||
21ae7a4d JK |
23162 | case DW_OP_constu: |
23163 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23164 | &bytes_read); | |
23165 | i += bytes_read; | |
23166 | break; | |
23167 | ||
23168 | case DW_OP_consts: | |
23169 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23170 | i += bytes_read; | |
23171 | break; | |
23172 | ||
23173 | case DW_OP_dup: | |
23174 | stack[stacki + 1] = stack[stacki]; | |
23175 | stacki++; | |
23176 | break; | |
23177 | ||
23178 | case DW_OP_plus: | |
23179 | stack[stacki - 1] += stack[stacki]; | |
23180 | stacki--; | |
23181 | break; | |
23182 | ||
23183 | case DW_OP_plus_uconst: | |
23184 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23185 | &bytes_read); | |
23186 | i += bytes_read; | |
23187 | break; | |
23188 | ||
23189 | case DW_OP_minus: | |
23190 | stack[stacki - 1] -= stack[stacki]; | |
23191 | stacki--; | |
23192 | break; | |
23193 | ||
23194 | case DW_OP_deref: | |
23195 | /* If we're not the last op, then we definitely can't encode | |
23196 | this using GDB's address_class enum. This is valid for partial | |
23197 | global symbols, although the variable's address will be bogus | |
23198 | in the psymtab. */ | |
23199 | if (i < size) | |
7d79de9a TT |
23200 | { |
23201 | if (computed == nullptr) | |
23202 | dwarf2_complex_location_expr_complaint (); | |
23203 | else | |
23204 | return 0; | |
23205 | } | |
21ae7a4d JK |
23206 | break; |
23207 | ||
23208 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23209 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23210 | /* The top of the stack has the offset from the beginning |
23211 | of the thread control block at which the variable is located. */ | |
23212 | /* Nothing should follow this operator, so the top of stack would | |
23213 | be returned. */ | |
23214 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23215 | address will be bogus in the psymtab. Make it always at least |
23216 | non-zero to not look as a variable garbage collected by linker | |
23217 | which have DW_OP_addr 0. */ | |
21ae7a4d | 23218 | if (i < size) |
7d79de9a TT |
23219 | { |
23220 | if (computed == nullptr) | |
23221 | dwarf2_complex_location_expr_complaint (); | |
23222 | else | |
23223 | return 0; | |
23224 | } | |
585861ea | 23225 | stack[stacki]++; |
21ae7a4d JK |
23226 | break; |
23227 | ||
23228 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
23229 | if (computed != nullptr) |
23230 | return 0; | |
21ae7a4d JK |
23231 | break; |
23232 | ||
336d760d | 23233 | case DW_OP_addrx: |
3019eac3 | 23234 | case DW_OP_GNU_addr_index: |
49f6c839 | 23235 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23236 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23237 | &bytes_read); | |
23238 | i += bytes_read; | |
23239 | break; | |
23240 | ||
21ae7a4d | 23241 | default: |
7d79de9a TT |
23242 | if (computed == nullptr) |
23243 | { | |
23244 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 23245 | |
7d79de9a TT |
23246 | if (name) |
23247 | complaint (_("unsupported stack op: '%s'"), | |
23248 | name); | |
23249 | else | |
23250 | complaint (_("unsupported stack op: '%02x'"), | |
23251 | op); | |
23252 | } | |
21ae7a4d JK |
23253 | |
23254 | return (stack[stacki]); | |
d53d4ac5 | 23255 | } |
3c6e0cb3 | 23256 | |
21ae7a4d JK |
23257 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23258 | outside of the allocated space. Also enforce minimum>0. */ | |
23259 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23260 | { | |
7d79de9a TT |
23261 | if (computed == nullptr) |
23262 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
23263 | return 0; |
23264 | } | |
23265 | ||
23266 | if (stacki <= 0) | |
23267 | { | |
7d79de9a TT |
23268 | if (computed == nullptr) |
23269 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
23270 | return 0; |
23271 | } | |
23272 | } | |
7d79de9a TT |
23273 | |
23274 | if (computed != nullptr) | |
23275 | *computed = true; | |
21ae7a4d | 23276 | return (stack[stacki]); |
c906108c SS |
23277 | } |
23278 | ||
23279 | /* memory allocation interface */ | |
23280 | ||
c906108c | 23281 | static struct dwarf_block * |
7b5a2f43 | 23282 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23283 | { |
8d749320 | 23284 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23285 | } |
23286 | ||
c906108c | 23287 | static struct die_info * |
b60c80d6 | 23288 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23289 | { |
23290 | struct die_info *die; | |
b60c80d6 DJ |
23291 | size_t size = sizeof (struct die_info); |
23292 | ||
23293 | if (num_attrs > 1) | |
23294 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23295 | |
b60c80d6 | 23296 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23297 | memset (die, 0, sizeof (struct die_info)); |
23298 | return (die); | |
23299 | } | |
2e276125 JB |
23300 | |
23301 | \f | |
a036ba48 | 23302 | |
c90ec28a | 23303 | /* Macro support. */ |
cf2c3c16 | 23304 | |
9eac9650 TT |
23305 | /* An overload of dwarf_decode_macros that finds the correct section |
23306 | and ensures it is read in before calling the other overload. */ | |
23307 | ||
23308 | static void | |
23309 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
23310 | int section_is_gnu) | |
23311 | { | |
976ca316 SM |
23312 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
23313 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 23314 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
23315 | unsigned int offset_size = cu->header.offset_size; |
23316 | struct dwarf2_section_info *section; | |
23317 | const char *section_name; | |
23318 | ||
23319 | if (cu->dwo_unit != nullptr) | |
23320 | { | |
23321 | if (section_is_gnu) | |
23322 | { | |
23323 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
23324 | section_name = ".debug_macro.dwo"; | |
23325 | } | |
23326 | else | |
23327 | { | |
23328 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
23329 | section_name = ".debug_macinfo.dwo"; | |
23330 | } | |
23331 | } | |
23332 | else | |
23333 | { | |
23334 | if (section_is_gnu) | |
23335 | { | |
976ca316 | 23336 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
23337 | section_name = ".debug_macro"; |
23338 | } | |
23339 | else | |
23340 | { | |
976ca316 | 23341 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
23342 | section_name = ".debug_macinfo"; |
23343 | } | |
23344 | } | |
23345 | ||
23346 | section->read (objfile); | |
23347 | if (section->buffer == nullptr) | |
23348 | { | |
23349 | complaint (_("missing %s section"), section_name); | |
23350 | return; | |
23351 | } | |
23352 | ||
23353 | buildsym_compunit *builder = cu->get_builder (); | |
23354 | ||
976ca316 | 23355 | dwarf_decode_macros (per_objfile, builder, section, lh, |
9eac9650 TT |
23356 | offset_size, offset, section_is_gnu); |
23357 | } | |
23358 | ||
3019eac3 DE |
23359 | /* Return the .debug_loc section to use for CU. |
23360 | For DWO files use .debug_loc.dwo. */ | |
23361 | ||
23362 | static struct dwarf2_section_info * | |
23363 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
23364 | { | |
976ca316 | 23365 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 23366 | |
3019eac3 | 23367 | if (cu->dwo_unit) |
43988095 JK |
23368 | { |
23369 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 23370 | |
43988095 JK |
23371 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
23372 | } | |
976ca316 SM |
23373 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
23374 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
23375 | } |
23376 | ||
8cf6f0b1 TT |
23377 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
23378 | ||
23379 | static void | |
23380 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
23381 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 23382 | const struct attribute *attr) |
8cf6f0b1 | 23383 | { |
976ca316 | 23384 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
23385 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
23386 | ||
976ca316 | 23387 | section->read (per_objfile->objfile); |
8cf6f0b1 | 23388 | |
976ca316 | 23389 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
23390 | baton->per_cu = cu->per_cu; |
23391 | gdb_assert (baton->per_cu); | |
23392 | /* We don't know how long the location list is, but make sure we | |
23393 | don't run off the edge of the section. */ | |
3019eac3 DE |
23394 | baton->size = section->size - DW_UNSND (attr); |
23395 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
23396 | if (cu->base_address.has_value ()) |
23397 | baton->base_address = *cu->base_address; | |
23398 | else | |
23399 | baton->base_address = 0; | |
f664829e | 23400 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
23401 | } |
23402 | ||
4c2df51b | 23403 | static void |
ff39bb5e | 23404 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 23405 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 23406 | { |
976ca316 SM |
23407 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
23408 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 23409 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 23410 | |
cd6c91b4 | 23411 | if (attr->form_is_section_offset () |
3019eac3 | 23412 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
23413 | the section. If so, fall through to the complaint in the |
23414 | other branch. */ | |
2c7d5afc | 23415 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 23416 | { |
0d53c4c4 | 23417 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 23418 | |
8d749320 | 23419 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 23420 | |
8cf6f0b1 | 23421 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 23422 | |
2b24b6e4 | 23423 | if (!cu->base_address.has_value ()) |
b98664d3 | 23424 | complaint (_("Location list used without " |
3e43a32a | 23425 | "specifying the CU base address.")); |
4c2df51b | 23426 | |
f1e6e072 TT |
23427 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23428 | ? dwarf2_loclist_block_index | |
23429 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
23430 | SYMBOL_LOCATION_BATON (sym) = baton; |
23431 | } | |
23432 | else | |
23433 | { | |
23434 | struct dwarf2_locexpr_baton *baton; | |
23435 | ||
8d749320 | 23436 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 23437 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
23438 | baton->per_cu = cu->per_cu; |
23439 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 23440 | |
4fc6c0d5 | 23441 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
23442 | { |
23443 | /* Note that we're just copying the block's data pointer | |
23444 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
23445 | info_buffer for SYM's objfile; right now we never release |
23446 | that buffer, but when we do clean up properly this may | |
23447 | need to change. */ | |
0d53c4c4 DJ |
23448 | baton->size = DW_BLOCK (attr)->size; |
23449 | baton->data = DW_BLOCK (attr)->data; | |
23450 | } | |
23451 | else | |
23452 | { | |
23453 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 23454 | sym->natural_name ()); |
0d53c4c4 | 23455 | baton->size = 0; |
0d53c4c4 | 23456 | } |
6e70227d | 23457 | |
f1e6e072 TT |
23458 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23459 | ? dwarf2_locexpr_block_index | |
23460 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
23461 | SYMBOL_LOCATION_BATON (sym) = baton; |
23462 | } | |
4c2df51b | 23463 | } |
6502dd73 | 23464 | |
2e6a9f79 | 23465 | /* See read.h. */ |
96408a79 | 23466 | |
2e6a9f79 SM |
23467 | const comp_unit_head * |
23468 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 23469 | { |
2e6a9f79 SM |
23470 | if (!m_header_read_in) |
23471 | { | |
23472 | const gdb_byte *info_ptr | |
23473 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 23474 | |
2e6a9f79 | 23475 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 23476 | |
2e6a9f79 SM |
23477 | read_comp_unit_head (&m_header, info_ptr, this->section, |
23478 | rcuh_kind::COMPILE); | |
23479 | } | |
96408a79 | 23480 | |
2e6a9f79 | 23481 | return &m_header; |
96408a79 SA |
23482 | } |
23483 | ||
09ba997f | 23484 | /* See read.h. */ |
ae0d2f24 | 23485 | |
98714339 | 23486 | int |
09ba997f | 23487 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 23488 | { |
2e6a9f79 | 23489 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
23490 | } |
23491 | ||
09ba997f | 23492 | /* See read.h. */ |
9eae7c52 TT |
23493 | |
23494 | int | |
09ba997f | 23495 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 23496 | { |
2e6a9f79 | 23497 | return this->get_header ()->offset_size; |
96408a79 SA |
23498 | } |
23499 | ||
09ba997f | 23500 | /* See read.h. */ |
96408a79 SA |
23501 | |
23502 | int | |
09ba997f | 23503 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 23504 | { |
2e6a9f79 | 23505 | const comp_unit_head *header = this->get_header (); |
96408a79 | 23506 | |
2e6a9f79 SM |
23507 | if (header->version == 2) |
23508 | return header->addr_size; | |
96408a79 | 23509 | else |
2e6a9f79 | 23510 | return header->offset_size; |
181cebd4 JK |
23511 | } |
23512 | ||
09ba997f | 23513 | /* See read.h. */ |
9aa1f1e3 | 23514 | |
09ba997f | 23515 | struct type * |
293e7e51 | 23516 | dwarf2_cu::addr_type () const |
9a49df9d | 23517 | { |
293e7e51 | 23518 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
23519 | struct type *void_type = objfile_type (objfile)->builtin_void; |
23520 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 23521 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
23522 | |
23523 | if (TYPE_LENGTH (addr_type) == addr_size) | |
23524 | return addr_type; | |
23525 | ||
09ba997f | 23526 | addr_type = addr_sized_int_type (TYPE_UNSIGNED (addr_type)); |
9a49df9d AB |
23527 | return addr_type; |
23528 | } | |
23529 | ||
22b6cd70 TT |
23530 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
23531 | the index of the result, and that searches a vector. It will | |
23532 | return a result even if the offset in question does not actually | |
23533 | occur in any CU. This is separate so that it can be unit | |
23534 | tested. */ | |
ae038cb0 | 23535 | |
22b6cd70 TT |
23536 | static int |
23537 | dwarf2_find_containing_comp_unit | |
23538 | (sect_offset sect_off, | |
23539 | unsigned int offset_in_dwz, | |
23540 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 23541 | { |
ae038cb0 DJ |
23542 | int low, high; |
23543 | ||
ae038cb0 | 23544 | low = 0; |
22b6cd70 | 23545 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
23546 | while (high > low) |
23547 | { | |
36586728 | 23548 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 23549 | int mid = low + (high - low) / 2; |
9a619af0 | 23550 | |
22b6cd70 | 23551 | mid_cu = all_comp_units[mid]; |
36586728 | 23552 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 23553 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 23554 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
23555 | high = mid; |
23556 | else | |
23557 | low = mid + 1; | |
23558 | } | |
23559 | gdb_assert (low == high); | |
22b6cd70 TT |
23560 | return low; |
23561 | } | |
23562 | ||
23563 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
23564 | the DIE at OFFSET. Raises an error on failure. */ | |
23565 | ||
23566 | static struct dwarf2_per_cu_data * | |
23567 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
23568 | unsigned int offset_in_dwz, | |
976ca316 | 23569 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 23570 | { |
976ca316 SM |
23571 | int low = dwarf2_find_containing_comp_unit |
23572 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
23573 | dwarf2_per_cu_data *this_cu = per_objfile->per_bfd->all_comp_units[low]; | |
22b6cd70 | 23574 | |
45b8ae0c | 23575 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 23576 | { |
36586728 | 23577 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 23578 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
23579 | "offset %s [in module %s]"), |
23580 | sect_offset_str (sect_off), | |
976ca316 | 23581 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 23582 | |
976ca316 | 23583 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 23584 | <= sect_off); |
976ca316 | 23585 | return per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
23586 | } |
23587 | else | |
23588 | { | |
976ca316 | 23589 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 23590 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 23591 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 23592 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
23593 | return this_cu; |
23594 | } | |
23595 | } | |
23596 | ||
22b6cd70 TT |
23597 | #if GDB_SELF_TEST |
23598 | ||
23599 | namespace selftests { | |
23600 | namespace find_containing_comp_unit { | |
23601 | ||
23602 | static void | |
23603 | run_test () | |
23604 | { | |
23605 | struct dwarf2_per_cu_data one {}; | |
23606 | struct dwarf2_per_cu_data two {}; | |
23607 | struct dwarf2_per_cu_data three {}; | |
23608 | struct dwarf2_per_cu_data four {}; | |
23609 | ||
23610 | one.length = 5; | |
23611 | two.sect_off = sect_offset (one.length); | |
23612 | two.length = 7; | |
23613 | ||
23614 | three.length = 5; | |
23615 | three.is_dwz = 1; | |
23616 | four.sect_off = sect_offset (three.length); | |
23617 | four.length = 7; | |
23618 | four.is_dwz = 1; | |
23619 | ||
23620 | std::vector<dwarf2_per_cu_data *> units; | |
23621 | units.push_back (&one); | |
23622 | units.push_back (&two); | |
23623 | units.push_back (&three); | |
23624 | units.push_back (&four); | |
23625 | ||
23626 | int result; | |
23627 | ||
23628 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
23629 | SELF_CHECK (units[result] == &one); | |
23630 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
23631 | SELF_CHECK (units[result] == &one); | |
23632 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
23633 | SELF_CHECK (units[result] == &two); | |
23634 | ||
23635 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
23636 | SELF_CHECK (units[result] == &three); | |
23637 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
23638 | SELF_CHECK (units[result] == &three); | |
23639 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
23640 | SELF_CHECK (units[result] == &four); | |
23641 | } | |
23642 | ||
23643 | } | |
23644 | } | |
23645 | ||
23646 | #endif /* GDB_SELF_TEST */ | |
23647 | ||
9e021579 | 23648 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 23649 | |
9e021579 SM |
23650 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
23651 | dwarf2_per_objfile *per_objfile) | |
23652 | : per_cu (per_cu), | |
23653 | per_objfile (per_objfile), | |
9068261f AB |
23654 | mark (false), |
23655 | has_loclist (false), | |
23656 | checked_producer (false), | |
23657 | producer_is_gxx_lt_4_6 (false), | |
23658 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 23659 | producer_is_icc (false), |
9068261f | 23660 | producer_is_icc_lt_14 (false), |
c258c396 | 23661 | producer_is_codewarrior (false), |
9068261f | 23662 | processing_has_namespace_info (false) |
93311388 | 23663 | { |
9816fde3 JK |
23664 | } |
23665 | ||
23666 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
23667 | ||
23668 | static void | |
95554aad TT |
23669 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
23670 | enum language pretend_language) | |
9816fde3 JK |
23671 | { |
23672 | struct attribute *attr; | |
23673 | ||
23674 | /* Set the language we're debugging. */ | |
23675 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 23676 | if (attr != nullptr) |
9816fde3 JK |
23677 | set_cu_language (DW_UNSND (attr), cu); |
23678 | else | |
9cded63f | 23679 | { |
95554aad | 23680 | cu->language = pretend_language; |
9cded63f TT |
23681 | cu->language_defn = language_def (cu->language); |
23682 | } | |
dee91e82 | 23683 | |
7d45c7c3 | 23684 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
23685 | } |
23686 | ||
7188ed02 | 23687 | /* See read.h. */ |
ae038cb0 | 23688 | |
7188ed02 SM |
23689 | dwarf2_cu * |
23690 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 23691 | { |
7188ed02 SM |
23692 | auto it = m_dwarf2_cus.find (per_cu); |
23693 | if (it == m_dwarf2_cus.end ()) | |
23694 | return nullptr; | |
ae038cb0 | 23695 | |
7188ed02 SM |
23696 | return it->second; |
23697 | } | |
23698 | ||
23699 | /* See read.h. */ | |
23700 | ||
23701 | void | |
23702 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
23703 | { | |
23704 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
23705 | ||
23706 | m_dwarf2_cus[per_cu] = cu; | |
23707 | } | |
23708 | ||
23709 | /* See read.h. */ | |
23710 | ||
23711 | void | |
23712 | dwarf2_per_objfile::age_comp_units () | |
23713 | { | |
23714 | /* Start by clearing all marks. */ | |
23715 | for (auto pair : m_dwarf2_cus) | |
23716 | pair.second->mark = false; | |
23717 | ||
23718 | /* Traverse all CUs, mark them and their dependencies if used recently | |
23719 | enough. */ | |
23720 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 23721 | { |
7188ed02 SM |
23722 | dwarf2_cu *cu = pair.second; |
23723 | ||
23724 | cu->last_used++; | |
23725 | if (cu->last_used <= dwarf_max_cache_age) | |
23726 | dwarf2_mark (cu); | |
ae038cb0 DJ |
23727 | } |
23728 | ||
7188ed02 SM |
23729 | /* Delete all CUs still not marked. */ |
23730 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 23731 | { |
7188ed02 | 23732 | dwarf2_cu *cu = it->second; |
ae038cb0 | 23733 | |
7188ed02 | 23734 | if (!cu->mark) |
ae038cb0 | 23735 | { |
7188ed02 SM |
23736 | delete cu; |
23737 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
23738 | } |
23739 | else | |
7188ed02 | 23740 | it++; |
ae038cb0 DJ |
23741 | } |
23742 | } | |
23743 | ||
7188ed02 | 23744 | /* See read.h. */ |
ae038cb0 | 23745 | |
7188ed02 SM |
23746 | void |
23747 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 23748 | { |
7188ed02 SM |
23749 | auto it = m_dwarf2_cus.find (per_cu); |
23750 | if (it == m_dwarf2_cus.end ()) | |
23751 | return; | |
ae038cb0 | 23752 | |
7188ed02 | 23753 | delete it->second; |
ae038cb0 | 23754 | |
7188ed02 SM |
23755 | m_dwarf2_cus.erase (it); |
23756 | } | |
ae038cb0 | 23757 | |
7188ed02 SM |
23758 | dwarf2_per_objfile::~dwarf2_per_objfile () |
23759 | { | |
23760 | remove_all_cus (); | |
ae038cb0 DJ |
23761 | } |
23762 | ||
dee91e82 DE |
23763 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
23764 | We store these in a hash table separate from the DIEs, and preserve them | |
23765 | when the DIEs are flushed out of cache. | |
23766 | ||
23767 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 23768 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
23769 | or the type may come from a DWO file. Furthermore, while it's more logical |
23770 | to use per_cu->section+offset, with Fission the section with the data is in | |
23771 | the DWO file but we don't know that section at the point we need it. | |
23772 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
23773 | because we can enter the lookup routine, get_die_type_at_offset, from | |
23774 | outside this file, and thus won't necessarily have PER_CU->cu. | |
23775 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 23776 | |
dee91e82 | 23777 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 23778 | { |
dee91e82 | 23779 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 23780 | sect_offset sect_off; |
1c379e20 DJ |
23781 | struct type *type; |
23782 | }; | |
23783 | ||
dee91e82 | 23784 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23785 | |
23786 | static hashval_t | |
dee91e82 | 23787 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 23788 | { |
9a3c8263 SM |
23789 | const struct dwarf2_per_cu_offset_and_type *ofs |
23790 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 23791 | |
9c541725 | 23792 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
23793 | } |
23794 | ||
dee91e82 | 23795 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23796 | |
23797 | static int | |
dee91e82 | 23798 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 23799 | { |
9a3c8263 SM |
23800 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
23801 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
23802 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
23803 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 23804 | |
dee91e82 | 23805 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 23806 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
23807 | } |
23808 | ||
23809 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
23810 | table if necessary. For convenience, return TYPE. |
23811 | ||
23812 | The DIEs reading must have careful ordering to: | |
85102364 | 23813 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
23814 | reading current DIE. |
23815 | * Not trying to dereference contents of still incompletely read in types | |
23816 | while reading in other DIEs. | |
23817 | * Enable referencing still incompletely read in types just by a pointer to | |
23818 | the type without accessing its fields. | |
23819 | ||
23820 | Therefore caller should follow these rules: | |
23821 | * Try to fetch any prerequisite types we may need to build this DIE type | |
23822 | before building the type and calling set_die_type. | |
e71ec853 | 23823 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
23824 | possible before fetching more types to complete the current type. |
23825 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 23826 | |
f792889a | 23827 | static struct type * |
1c379e20 DJ |
23828 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
23829 | { | |
976ca316 | 23830 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 23831 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 23832 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
23833 | struct attribute *attr; |
23834 | struct dynamic_prop prop; | |
1c379e20 | 23835 | |
b4ba55a1 JB |
23836 | /* For Ada types, make sure that the gnat-specific data is always |
23837 | initialized (if not already set). There are a few types where | |
23838 | we should not be doing so, because the type-specific area is | |
23839 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
23840 | where the type-specific area is used to store the floatformat). | |
23841 | But this is not a problem, because the gnat-specific information | |
23842 | is actually not needed for these types. */ | |
23843 | if (need_gnat_info (cu) | |
78134374 SM |
23844 | && type->code () != TYPE_CODE_FUNC |
23845 | && type->code () != TYPE_CODE_FLT | |
23846 | && type->code () != TYPE_CODE_METHODPTR | |
23847 | && type->code () != TYPE_CODE_MEMBERPTR | |
23848 | && type->code () != TYPE_CODE_METHOD | |
b4ba55a1 JB |
23849 | && !HAVE_GNAT_AUX_INFO (type)) |
23850 | INIT_GNAT_SPECIFIC (type); | |
23851 | ||
3f2f83dd KB |
23852 | /* Read DW_AT_allocated and set in type. */ |
23853 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 23854 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23855 | { |
293e7e51 | 23856 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 23857 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23858 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd KB |
23859 | } |
23860 | else if (attr != NULL) | |
23861 | { | |
b98664d3 | 23862 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 23863 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23864 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23865 | } |
23866 | ||
23867 | /* Read DW_AT_associated and set in type. */ | |
23868 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 23869 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23870 | { |
293e7e51 | 23871 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 23872 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23873 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd KB |
23874 | } |
23875 | else if (attr != NULL) | |
23876 | { | |
b98664d3 | 23877 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 23878 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23879 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23880 | } |
23881 | ||
3cdcd0ce JB |
23882 | /* Read DW_AT_data_location and set in type. */ |
23883 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
293e7e51 | 23884 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 23885 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); |
3cdcd0ce | 23886 | |
976ca316 SM |
23887 | if (per_objfile->die_type_hash == NULL) |
23888 | per_objfile->die_type_hash | |
0335378b TT |
23889 | = htab_up (htab_create_alloc (127, |
23890 | per_cu_offset_and_type_hash, | |
23891 | per_cu_offset_and_type_eq, | |
23892 | NULL, xcalloc, xfree)); | |
1c379e20 | 23893 | |
dee91e82 | 23894 | ofs.per_cu = cu->per_cu; |
9c541725 | 23895 | ofs.sect_off = die->sect_off; |
1c379e20 | 23896 | ofs.type = type; |
dee91e82 | 23897 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 23898 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 23899 | if (*slot) |
b98664d3 | 23900 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 23901 | sect_offset_str (die->sect_off)); |
8d749320 SM |
23902 | *slot = XOBNEW (&objfile->objfile_obstack, |
23903 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 23904 | **slot = ofs; |
f792889a | 23905 | return type; |
1c379e20 DJ |
23906 | } |
23907 | ||
9c541725 | 23908 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 23909 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
23910 | |
23911 | static struct type * | |
9c541725 | 23912 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 23913 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23914 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 23915 | { |
dee91e82 | 23916 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 23917 | |
976ca316 | 23918 | if (per_objfile->die_type_hash == NULL) |
f792889a | 23919 | return NULL; |
1c379e20 | 23920 | |
dee91e82 | 23921 | ofs.per_cu = per_cu; |
9c541725 | 23922 | ofs.sect_off = sect_off; |
9a3c8263 | 23923 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 23924 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
23925 | if (slot) |
23926 | return slot->type; | |
23927 | else | |
23928 | return NULL; | |
23929 | } | |
23930 | ||
02142a6c | 23931 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
23932 | or return NULL if DIE does not have a saved type. */ |
23933 | ||
23934 | static struct type * | |
23935 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
23936 | { | |
aa66c379 | 23937 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
23938 | } |
23939 | ||
10b3939b DJ |
23940 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
23941 | ||
23942 | static void | |
23943 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
23944 | struct dwarf2_per_cu_data *ref_per_cu) | |
23945 | { | |
23946 | void **slot; | |
23947 | ||
23948 | if (cu->dependencies == NULL) | |
23949 | cu->dependencies | |
23950 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
23951 | NULL, &cu->comp_unit_obstack, | |
23952 | hashtab_obstack_allocate, | |
23953 | dummy_obstack_deallocate); | |
23954 | ||
23955 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
23956 | if (*slot == NULL) | |
23957 | *slot = ref_per_cu; | |
23958 | } | |
1c379e20 | 23959 | |
f504f079 DE |
23960 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
23961 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
23962 | cache that we must keep because we are keeping CU. |
23963 | ||
23964 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 23965 | |
10b3939b DJ |
23966 | static int |
23967 | dwarf2_mark_helper (void **slot, void *data) | |
23968 | { | |
7188ed02 SM |
23969 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
23970 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
23971 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
23972 | |
23973 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
23974 | reading of the chain. As such dependencies remain valid it is not much | |
23975 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 23976 | if (cu == nullptr) |
d07ed419 JK |
23977 | return 1; |
23978 | ||
7188ed02 | 23979 | if (cu->mark) |
10b3939b | 23980 | return 1; |
10b3939b | 23981 | |
7188ed02 SM |
23982 | cu->mark = true; |
23983 | ||
23984 | if (cu->dependencies != nullptr) | |
23985 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
23986 | |
23987 | return 1; | |
23988 | } | |
23989 | ||
f504f079 DE |
23990 | /* Set the mark field in CU and in every other compilation unit in the |
23991 | cache that we must keep because we are keeping CU. */ | |
23992 | ||
ae038cb0 DJ |
23993 | static void |
23994 | dwarf2_mark (struct dwarf2_cu *cu) | |
23995 | { | |
23996 | if (cu->mark) | |
23997 | return; | |
7188ed02 | 23998 | |
9068261f | 23999 | cu->mark = true; |
ae038cb0 | 24000 | |
7188ed02 SM |
24001 | if (cu->dependencies != nullptr) |
24002 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
24003 | } |
24004 | ||
72bf9492 DJ |
24005 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
24006 | is its offset in .debug_info for this objfile. */ | |
24007 | ||
24008 | static hashval_t | |
24009 | partial_die_hash (const void *item) | |
24010 | { | |
9a3c8263 SM |
24011 | const struct partial_die_info *part_die |
24012 | = (const struct partial_die_info *) item; | |
9a619af0 | 24013 | |
9c541725 | 24014 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
24015 | } |
24016 | ||
24017 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
24018 | are equal if they have the same offset. */ | |
24019 | ||
24020 | static int | |
24021 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
24022 | { | |
9a3c8263 SM |
24023 | const struct partial_die_info *part_die_lhs |
24024 | = (const struct partial_die_info *) item_lhs; | |
24025 | const struct partial_die_info *part_die_rhs | |
24026 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 24027 | |
9c541725 | 24028 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
24029 | } |
24030 | ||
3c3bb058 AB |
24031 | struct cmd_list_element *set_dwarf_cmdlist; |
24032 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 24033 | |
9291a0cd | 24034 | static void |
cd4fb1b2 SM |
24035 | show_check_physname (struct ui_file *file, int from_tty, |
24036 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 24037 | { |
cd4fb1b2 SM |
24038 | fprintf_filtered (file, |
24039 | _("Whether to check \"physname\" is %s.\n"), | |
24040 | value); | |
9291a0cd TT |
24041 | } |
24042 | ||
6c265988 | 24043 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 24044 | void |
6c265988 | 24045 | _initialize_dwarf2_read () |
9291a0cd | 24046 | { |
0743fc83 | 24047 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 24048 | Set DWARF specific variables.\n\ |
590042fc | 24049 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
24050 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
24051 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 24052 | |
0743fc83 | 24053 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
24054 | Show DWARF specific variables.\n\ |
24055 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
24056 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
24057 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 24058 | |
cd4fb1b2 SM |
24059 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
24060 | &dwarf_max_cache_age, _("\ | |
24061 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
24062 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
24063 | A higher limit means that cached compilation units will be stored\n\ | |
24064 | in memory longer, and more total memory will be used. Zero disables\n\ | |
24065 | caching, which can slow down startup."), | |
24066 | NULL, | |
24067 | show_dwarf_max_cache_age, | |
24068 | &set_dwarf_cmdlist, | |
24069 | &show_dwarf_cmdlist); | |
156942c7 | 24070 | |
cd4fb1b2 SM |
24071 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
24072 | Set debugging of the DWARF reader."), _("\ | |
24073 | Show debugging of the DWARF reader."), _("\ | |
24074 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
24075 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
24076 | information. A value greater than 1 provides more verbose information."), | |
24077 | NULL, | |
24078 | NULL, | |
24079 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24080 | |
cd4fb1b2 SM |
24081 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
24082 | Set debugging of the DWARF DIE reader."), _("\ | |
24083 | Show debugging of the DWARF DIE reader."), _("\ | |
24084 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
24085 | The value is the maximum depth to print."), | |
24086 | NULL, | |
24087 | NULL, | |
24088 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24089 | |
cd4fb1b2 SM |
24090 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
24091 | Set debugging of the dwarf line reader."), _("\ | |
24092 | Show debugging of the dwarf line reader."), _("\ | |
24093 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
24094 | A value of 1 (one) provides basic information.\n\ | |
24095 | A value greater than 1 provides more verbose information."), | |
24096 | NULL, | |
24097 | NULL, | |
24098 | &setdebuglist, &showdebuglist); | |
437afbb8 | 24099 | |
cd4fb1b2 SM |
24100 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
24101 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
24102 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
24103 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
24104 | the demangler."), | |
24105 | NULL, show_check_physname, | |
24106 | &setdebuglist, &showdebuglist); | |
900e11f9 | 24107 | |
e615022a DE |
24108 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
24109 | no_class, &use_deprecated_index_sections, _("\ | |
24110 | Set whether to use deprecated gdb_index sections."), _("\ | |
24111 | Show whether to use deprecated gdb_index sections."), _("\ | |
24112 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
24113 | Normally they are ignored either because of a missing feature or\n\ | |
24114 | performance issue.\n\ | |
24115 | Warning: This option must be enabled before gdb reads the file."), | |
24116 | NULL, | |
24117 | NULL, | |
24118 | &setlist, &showlist); | |
24119 | ||
f1e6e072 TT |
24120 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
24121 | &dwarf2_locexpr_funcs); | |
24122 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24123 | &dwarf2_loclist_funcs); | |
24124 | ||
24125 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24126 | &dwarf2_block_frame_base_locexpr_funcs); | |
24127 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24128 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
24129 | |
24130 | #if GDB_SELF_TEST | |
24131 | selftests::register_test ("dw2_expand_symtabs_matching", | |
24132 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
24133 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
24134 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 24135 | #endif |
6502dd73 | 24136 | } |