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 | |
2b79f376 | 3439 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3440 | |
9291a0cd | 3441 | static void |
da51c347 | 3442 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
976ca316 | 3443 | dwarf2_per_objfile *per_objfile, |
c7f839cb | 3444 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3445 | domain_enum domain, |
3446 | const char *name) | |
3447 | { | |
976ca316 | 3448 | iter->per_objfile = per_objfile; |
da51c347 DE |
3449 | iter->block_index = block_index; |
3450 | iter->domain = domain; | |
3451 | iter->next = 0; | |
8943b874 | 3452 | iter->global_seen = 0; |
da51c347 | 3453 | |
976ca316 | 3454 | mapped_index *index = per_objfile->per_bfd->index_table.get (); |
ed2dc618 SM |
3455 | |
3456 | /* index is NULL if OBJF_READNOW. */ | |
3457 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3458 | iter->length = MAYBE_SWAP (*iter->vec); |
3459 | else | |
3460 | { | |
3461 | iter->vec = NULL; | |
3462 | iter->length = 0; | |
3463 | } | |
3464 | } | |
3465 | ||
3466 | /* Return the next matching CU or NULL if there are no more. */ | |
3467 | ||
3468 | static struct dwarf2_per_cu_data * | |
3469 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3470 | { | |
976ca316 | 3471 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3472 | |
da51c347 DE |
3473 | for ( ; iter->next < iter->length; ++iter->next) |
3474 | { | |
3475 | offset_type cu_index_and_attrs = | |
3476 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3477 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3478 | gdb_index_symbol_kind symbol_kind = |
3479 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3480 | /* Only check the symbol attributes if they're present. | |
3481 | Indices prior to version 7 don't record them, | |
3482 | and indices >= 7 may elide them for certain symbols | |
3483 | (gold does this). */ | |
3484 | int attrs_valid = | |
976ca316 | 3485 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3486 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3487 | ||
3190f0c6 | 3488 | /* Don't crash on bad data. */ |
976ca316 SM |
3489 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
3490 | + per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3491 | { |
b98664d3 | 3492 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3493 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3494 | continue; |
3495 | } | |
3496 | ||
976ca316 | 3497 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3498 | |
da51c347 | 3499 | /* Skip if already read in. */ |
976ca316 | 3500 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3501 | continue; |
3502 | ||
8943b874 DE |
3503 | /* Check static vs global. */ |
3504 | if (attrs_valid) | |
3505 | { | |
2b79f376 SM |
3506 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3507 | ||
3508 | if (iter->block_index.has_value ()) | |
3509 | { | |
3510 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3511 | ||
3512 | if (is_static != want_static) | |
3513 | continue; | |
3514 | } | |
3515 | ||
8943b874 | 3516 | /* Work around gold/15646. */ |
f030440d TV |
3517 | if (!is_static |
3518 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3519 | { | |
3520 | if (iter->global_seen) | |
3521 | continue; | |
3522 | ||
3523 | iter->global_seen = 1; | |
3524 | } | |
8943b874 | 3525 | } |
da51c347 DE |
3526 | |
3527 | /* Only check the symbol's kind if it has one. */ | |
3528 | if (attrs_valid) | |
3529 | { | |
3530 | switch (iter->domain) | |
3531 | { | |
3532 | case VAR_DOMAIN: | |
3533 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3534 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3535 | /* Some types are also in VAR_DOMAIN. */ | |
3536 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3537 | continue; | |
3538 | break; | |
3539 | case STRUCT_DOMAIN: | |
3540 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3541 | continue; | |
3542 | break; | |
3543 | case LABEL_DOMAIN: | |
3544 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3545 | continue; | |
3546 | break; | |
59c35742 AB |
3547 | case MODULE_DOMAIN: |
3548 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3549 | continue; | |
3550 | break; | |
da51c347 DE |
3551 | default: |
3552 | break; | |
3553 | } | |
3554 | } | |
3555 | ||
3556 | ++iter->next; | |
3557 | return per_cu; | |
3558 | } | |
3559 | ||
3560 | return NULL; | |
3561 | } | |
3562 | ||
43f3e411 | 3563 | static struct compunit_symtab * |
c7f839cb | 3564 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3565 | const char *name, domain_enum domain) |
9291a0cd | 3566 | { |
43f3e411 | 3567 | struct compunit_symtab *stab_best = NULL; |
976ca316 | 3568 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 3569 | |
b5ec771e PA |
3570 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3571 | ||
ed2dc618 SM |
3572 | struct dw2_symtab_iterator iter; |
3573 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3574 | |
976ca316 | 3575 | dw2_symtab_iter_init (&iter, per_objfile, block_index, domain, name); |
9291a0cd | 3576 | |
ed2dc618 SM |
3577 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3578 | { | |
3579 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 3580 | struct compunit_symtab *stab |
976ca316 | 3581 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
ed2dc618 | 3582 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3583 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3584 | |
ed2dc618 SM |
3585 | sym = block_find_symbol (block, name, domain, |
3586 | block_find_non_opaque_type_preferred, | |
3587 | &with_opaque); | |
b2e2f908 | 3588 | |
ed2dc618 SM |
3589 | /* Some caution must be observed with overloaded functions |
3590 | and methods, since the index will not contain any overload | |
3591 | information (but NAME might contain it). */ | |
da51c347 | 3592 | |
ed2dc618 SM |
3593 | if (sym != NULL |
3594 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3595 | return stab; | |
3596 | if (with_opaque != NULL | |
3597 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3598 | stab_best = stab; | |
da51c347 | 3599 | |
ed2dc618 | 3600 | /* Keep looking through other CUs. */ |
9291a0cd | 3601 | } |
9291a0cd | 3602 | |
da51c347 | 3603 | return stab_best; |
9291a0cd TT |
3604 | } |
3605 | ||
3606 | static void | |
3607 | dw2_print_stats (struct objfile *objfile) | |
3608 | { | |
976ca316 SM |
3609 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3610 | int total = (per_objfile->per_bfd->all_comp_units.size () | |
3611 | + per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3612 | int count = 0; |
9291a0cd | 3613 | |
ed2dc618 | 3614 | for (int i = 0; i < total; ++i) |
9291a0cd | 3615 | { |
976ca316 | 3616 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3617 | |
976ca316 | 3618 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3619 | ++count; |
3620 | } | |
e4a48d9d | 3621 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3622 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3623 | } | |
3624 | ||
779bd270 DE |
3625 | /* This dumps minimal information about the index. |
3626 | It is called via "mt print objfiles". | |
3627 | One use is to verify .gdb_index has been loaded by the | |
3628 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3629 | ||
9291a0cd TT |
3630 | static void |
3631 | dw2_dump (struct objfile *objfile) | |
3632 | { | |
976ca316 | 3633 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3634 | |
976ca316 | 3635 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3636 | printf_filtered (".gdb_index:"); |
976ca316 | 3637 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3638 | { |
3639 | printf_filtered (" version %d\n", | |
976ca316 | 3640 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3641 | } |
3642 | else | |
3643 | printf_filtered (" faked for \"readnow\"\n"); | |
3644 | printf_filtered ("\n"); | |
9291a0cd TT |
3645 | } |
3646 | ||
9291a0cd TT |
3647 | static void |
3648 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3649 | const char *func_name) | |
3650 | { | |
976ca316 | 3651 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
da51c347 | 3652 | |
ed2dc618 SM |
3653 | struct dw2_symtab_iterator iter; |
3654 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3655 | |
976ca316 | 3656 | dw2_symtab_iter_init (&iter, per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3657 | |
ed2dc618 | 3658 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3659 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
da51c347 | 3660 | |
9291a0cd TT |
3661 | } |
3662 | ||
3663 | static void | |
3664 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3665 | { | |
976ca316 SM |
3666 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3667 | int total_units = (per_objfile->per_bfd->all_comp_units.size () | |
3668 | + per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3669 | |
ed2dc618 | 3670 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3671 | { |
976ca316 | 3672 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3673 | |
58f0c718 TT |
3674 | /* We don't want to directly expand a partial CU, because if we |
3675 | read it with the wrong language, then assertion failures can | |
3676 | be triggered later on. See PR symtab/23010. So, tell | |
3677 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3678 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3679 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3680 | } |
3681 | } | |
3682 | ||
3683 | static void | |
652a8996 JK |
3684 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3685 | const char *fullname) | |
9291a0cd | 3686 | { |
976ca316 | 3687 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
d4637a04 DE |
3688 | |
3689 | /* We don't need to consider type units here. | |
3690 | This is only called for examining code, e.g. expand_line_sal. | |
3691 | There can be an order of magnitude (or more) more type units | |
3692 | than comp units, and we avoid them if we can. */ | |
3693 | ||
976ca316 | 3694 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3695 | { |
3d7bb9d9 | 3696 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3697 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3698 | continue; |
3699 | ||
976ca316 | 3700 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3701 | if (file_data == NULL) |
9291a0cd TT |
3702 | continue; |
3703 | ||
b76e467d | 3704 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3705 | { |
652a8996 JK |
3706 | const char *this_fullname = file_data->file_names[j]; |
3707 | ||
3708 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3709 | { |
976ca316 | 3710 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
9291a0cd TT |
3711 | break; |
3712 | } | |
3713 | } | |
3714 | } | |
3715 | } | |
3716 | ||
9a0bacfb TV |
3717 | static void |
3718 | dw2_expand_symtabs_matching_symbol | |
3719 | (mapped_index_base &index, | |
3720 | const lookup_name_info &lookup_name_in, | |
3721 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3722 | enum search_domain kind, | |
fcf23d5b SM |
3723 | gdb::function_view<bool (offset_type)> match_callback, |
3724 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb TV |
3725 | |
3726 | static void | |
3727 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3728 | (dwarf2_per_cu_data *per_cu, |
3729 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3730 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3731 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3732 | ||
9291a0cd | 3733 | static void |
199b4314 TT |
3734 | dw2_map_matching_symbols |
3735 | (struct objfile *objfile, | |
b054970d | 3736 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3737 | int global, |
3738 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3739 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3740 | { |
1aa98955 | 3741 | /* Used for Ada. */ |
976ca316 | 3742 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3743 | |
9a0bacfb TV |
3744 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3745 | ||
976ca316 | 3746 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 TV |
3747 | { |
3748 | /* Ada currently doesn't support .gdb_index (see PR24713). We can get | |
3749 | here though if the current language is Ada for a non-Ada objfile | |
9a0bacfb | 3750 | using GNU index. */ |
976ca316 | 3751 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3752 | |
9a0bacfb TV |
3753 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3754 | auto matcher = [&] (const char *symname) | |
3755 | { | |
3756 | if (ordered_compare == nullptr) | |
3757 | return true; | |
3758 | return ordered_compare (symname, match_name) == 0; | |
3759 | }; | |
3760 | ||
3761 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3762 | [&] (offset_type namei) | |
3763 | { | |
3764 | struct dw2_symtab_iterator iter; | |
3765 | struct dwarf2_per_cu_data *per_cu; | |
3766 | ||
976ca316 | 3767 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
9a0bacfb TV |
3768 | match_name); |
3769 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
976ca316 | 3770 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3771 | nullptr); |
9a0bacfb | 3772 | return true; |
976ca316 | 3773 | }, per_objfile); |
9a0bacfb TV |
3774 | } |
3775 | else | |
3776 | { | |
3777 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3778 | proceed assuming all symtabs have been read in. */ | |
3779 | } | |
1aa98955 TV |
3780 | |
3781 | for (compunit_symtab *cust : objfile->compunits ()) | |
3782 | { | |
3783 | const struct block *block; | |
3784 | ||
3785 | if (cust == NULL) | |
3786 | continue; | |
3787 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3788 | if (!iterate_over_symbols_terminated (block, name, | |
3789 | domain, callback)) | |
3790 | return; | |
3791 | } | |
9291a0cd TT |
3792 | } |
3793 | ||
e1ef7d7a PA |
3794 | /* Starting from a search name, return the string that finds the upper |
3795 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3796 | list. Returns the empty string to indicate that the upper bound is | |
3797 | the end of the list. */ | |
3798 | ||
3799 | static std::string | |
3800 | make_sort_after_prefix_name (const char *search_name) | |
3801 | { | |
3802 | /* When looking to complete "func", we find the upper bound of all | |
3803 | symbols that start with "func" by looking for where we'd insert | |
3804 | the closest string that would follow "func" in lexicographical | |
3805 | order. Usually, that's "func"-with-last-character-incremented, | |
3806 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3807 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3808 | Especially mind the 0xff character, which is a valid character in | |
3809 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3810 | rule out compilers allowing it in identifiers. Note that | |
3811 | conveniently, strcmp/strcasecmp are specified to compare | |
3812 | characters interpreted as unsigned char. So what we do is treat | |
3813 | the whole string as a base 256 number composed of a sequence of | |
3814 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3815 | to 0, and carries 1 to the following more-significant position. | |
3816 | If the very first character in SEARCH_NAME ends up incremented | |
3817 | and carries/overflows, then the upper bound is the end of the | |
3818 | list. The string after the empty string is also the empty | |
3819 | string. | |
3820 | ||
3821 | Some examples of this operation: | |
3822 | ||
3823 | SEARCH_NAME => "+1" RESULT | |
3824 | ||
3825 | "abc" => "abd" | |
3826 | "ab\xff" => "ac" | |
3827 | "\xff" "a" "\xff" => "\xff" "b" | |
3828 | "\xff" => "" | |
3829 | "\xff\xff" => "" | |
3830 | "" => "" | |
3831 | ||
3832 | Then, with these symbols for example: | |
3833 | ||
3834 | func | |
3835 | func1 | |
3836 | fund | |
3837 | ||
3838 | completing "func" looks for symbols between "func" and | |
3839 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3840 | which finds "func" and "func1", but not "fund". | |
3841 | ||
3842 | And with: | |
3843 | ||
3844 | funcÿ (Latin1 'ÿ' [0xff]) | |
3845 | funcÿ1 | |
3846 | fund | |
3847 | ||
3848 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3849 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3850 | ||
3851 | And with: | |
3852 | ||
3853 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3854 | ÿÿ1 | |
3855 | ||
3856 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3857 | the end of the list. | |
3858 | */ | |
3859 | std::string after = search_name; | |
3860 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3861 | after.pop_back (); | |
3862 | if (!after.empty ()) | |
3863 | after.back () = (unsigned char) after.back () + 1; | |
3864 | return after; | |
3865 | } | |
3866 | ||
5c58de74 | 3867 | /* See declaration. */ |
61d96d7e | 3868 | |
5c58de74 PA |
3869 | std::pair<std::vector<name_component>::const_iterator, |
3870 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3871 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
3872 | (const lookup_name_info &lookup_name_without_params, language lang, |
3873 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 3874 | { |
5c58de74 PA |
3875 | auto *name_cmp |
3876 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3877 | |
3b00ef10 | 3878 | const char *lang_name |
e0802d59 | 3879 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3880 | |
3f563c84 PA |
3881 | /* Comparison function object for lower_bound that matches against a |
3882 | given symbol name. */ | |
3883 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3884 | const char *name) | |
3885 | { | |
fcf23d5b | 3886 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3887 | const char *elem_name = elem_qualified + elem.name_offset; |
3888 | return name_cmp (elem_name, name) < 0; | |
3889 | }; | |
3890 | ||
3891 | /* Comparison function object for upper_bound that matches against a | |
3892 | given symbol name. */ | |
3893 | auto lookup_compare_upper = [&] (const char *name, | |
3894 | const name_component &elem) | |
3895 | { | |
fcf23d5b | 3896 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3897 | const char *elem_name = elem_qualified + elem.name_offset; |
3898 | return name_cmp (name, elem_name) < 0; | |
3899 | }; | |
3900 | ||
5c58de74 PA |
3901 | auto begin = this->name_components.begin (); |
3902 | auto end = this->name_components.end (); | |
3f563c84 PA |
3903 | |
3904 | /* Find the lower bound. */ | |
3905 | auto lower = [&] () | |
3906 | { | |
3b00ef10 | 3907 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3908 | return begin; |
3909 | else | |
3b00ef10 | 3910 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3911 | } (); |
3912 | ||
3913 | /* Find the upper bound. */ | |
3914 | auto upper = [&] () | |
3915 | { | |
5c58de74 | 3916 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3917 | { |
e1ef7d7a PA |
3918 | /* In completion mode, we want UPPER to point past all |
3919 | symbols names that have the same prefix. I.e., with | |
3920 | these symbols, and completing "func": | |
3921 | ||
3922 | function << lower bound | |
3923 | function1 | |
3924 | other_function << upper bound | |
3925 | ||
3926 | We find the upper bound by looking for the insertion | |
3927 | point of "func"-with-last-character-incremented, | |
3928 | i.e. "fund". */ | |
3b00ef10 | 3929 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3930 | if (after.empty ()) |
3f563c84 | 3931 | return end; |
e6b2f5ef PA |
3932 | return std::lower_bound (lower, end, after.c_str (), |
3933 | lookup_compare_lower); | |
3f563c84 PA |
3934 | } |
3935 | else | |
3b00ef10 | 3936 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3937 | } (); |
3938 | ||
5c58de74 PA |
3939 | return {lower, upper}; |
3940 | } | |
3941 | ||
3942 | /* See declaration. */ | |
3943 | ||
3944 | void | |
fcf23d5b | 3945 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
3946 | { |
3947 | if (!this->name_components.empty ()) | |
3948 | return; | |
3949 | ||
3950 | this->name_components_casing = case_sensitivity; | |
3951 | auto *name_cmp | |
3952 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3953 | ||
3954 | /* The code below only knows how to break apart components of C++ | |
3955 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3956 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3957 | auto count = this->symbol_name_count (); |
3958 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3959 | { |
44ed8f3e | 3960 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3961 | continue; |
3962 | ||
fcf23d5b | 3963 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
3964 | |
3965 | /* Add each name component to the name component table. */ | |
3966 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3967 | |
3968 | if (strstr (name, "::") != nullptr) | |
3969 | { | |
3970 | for (unsigned int current_len = cp_find_first_component (name); | |
3971 | name[current_len] != '\0'; | |
3972 | current_len += cp_find_first_component (name + current_len)) | |
3973 | { | |
3974 | gdb_assert (name[current_len] == ':'); | |
3975 | this->name_components.push_back ({previous_len, idx}); | |
3976 | /* Skip the '::'. */ | |
3977 | current_len += 2; | |
3978 | previous_len = current_len; | |
3979 | } | |
3980 | } | |
3981 | else | |
5c58de74 | 3982 | { |
3b00ef10 TT |
3983 | /* Handle the Ada encoded (aka mangled) form here. */ |
3984 | for (const char *iter = strstr (name, "__"); | |
3985 | iter != nullptr; | |
3986 | iter = strstr (iter, "__")) | |
3987 | { | |
3988 | this->name_components.push_back ({previous_len, idx}); | |
3989 | iter += 2; | |
3990 | previous_len = iter - name; | |
3991 | } | |
5c58de74 | 3992 | } |
3b00ef10 | 3993 | |
5c58de74 PA |
3994 | this->name_components.push_back ({previous_len, idx}); |
3995 | } | |
3996 | ||
3997 | /* Sort name_components elements by name. */ | |
3998 | auto name_comp_compare = [&] (const name_component &left, | |
3999 | const name_component &right) | |
4000 | { | |
fcf23d5b SM |
4001 | const char *left_qualified |
4002 | = this->symbol_name_at (left.idx, per_objfile); | |
4003 | const char *right_qualified | |
4004 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
4005 | |
4006 | const char *left_name = left_qualified + left.name_offset; | |
4007 | const char *right_name = right_qualified + right.name_offset; | |
4008 | ||
4009 | return name_cmp (left_name, right_name) < 0; | |
4010 | }; | |
4011 | ||
4012 | std::sort (this->name_components.begin (), | |
4013 | this->name_components.end (), | |
4014 | name_comp_compare); | |
4015 | } | |
4016 | ||
4017 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4018 | mapped_index_base instead of the containing objfile. This is split |
4019 | to a separate function in order to be able to unit test the | |
4020 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4021 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4022 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4023 | |
4024 | static void | |
4025 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4026 | (mapped_index_base &index, |
5c58de74 PA |
4027 | const lookup_name_info &lookup_name_in, |
4028 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4029 | enum search_domain kind, | |
fcf23d5b SM |
4030 | gdb::function_view<bool (offset_type)> match_callback, |
4031 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4032 | { |
4033 | lookup_name_info lookup_name_without_params | |
4034 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4035 | |
4036 | /* Build the symbol name component sorted vector, if we haven't | |
4037 | yet. */ | |
fcf23d5b | 4038 | index.build_name_components (per_objfile); |
5c58de74 | 4039 | |
3f563c84 PA |
4040 | /* The same symbol may appear more than once in the range though. |
4041 | E.g., if we're looking for symbols that complete "w", and we have | |
4042 | a symbol named "w1::w2", we'll find the two name components for | |
4043 | that same symbol in the range. To be sure we only call the | |
4044 | callback once per symbol, we first collect the symbol name | |
4045 | indexes that matched in a temporary vector and ignore | |
4046 | duplicates. */ | |
4047 | std::vector<offset_type> matches; | |
3f563c84 | 4048 | |
3b00ef10 TT |
4049 | struct name_and_matcher |
4050 | { | |
4051 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4052 | const char *name; |
3b00ef10 TT |
4053 | |
4054 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4055 | { |
ecc6c606 | 4056 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4057 | } |
4058 | }; | |
4059 | ||
4060 | /* A vector holding all the different symbol name matchers, for all | |
4061 | languages. */ | |
4062 | std::vector<name_and_matcher> matchers; | |
4063 | ||
4064 | for (int i = 0; i < nr_languages; i++) | |
4065 | { | |
4066 | enum language lang_e = (enum language) i; | |
4067 | ||
4068 | const language_defn *lang = language_def (lang_e); | |
4069 | symbol_name_matcher_ftype *name_matcher | |
4070 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 4071 | |
3b00ef10 TT |
4072 | name_and_matcher key { |
4073 | name_matcher, | |
4074 | lookup_name_without_params.language_lookup_name (lang_e) | |
4075 | }; | |
4076 | ||
4077 | /* Don't insert the same comparison routine more than once. | |
4078 | Note that we do this linear walk. This is not a problem in | |
4079 | practice because the number of supported languages is | |
4080 | low. */ | |
4081 | if (std::find (matchers.begin (), matchers.end (), key) | |
4082 | != matchers.end ()) | |
9291a0cd | 4083 | continue; |
3b00ef10 TT |
4084 | matchers.push_back (std::move (key)); |
4085 | ||
4086 | auto bounds | |
4087 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 4088 | lang_e, per_objfile); |
3b00ef10 TT |
4089 | |
4090 | /* Now for each symbol name in range, check to see if we have a name | |
4091 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4092 | ||
4093 | for (; bounds.first != bounds.second; ++bounds.first) | |
4094 | { | |
fcf23d5b SM |
4095 | const char *qualified |
4096 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
4097 | |
4098 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4099 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4100 | continue; | |
9291a0cd | 4101 | |
3b00ef10 TT |
4102 | matches.push_back (bounds.first->idx); |
4103 | } | |
3f563c84 PA |
4104 | } |
4105 | ||
4106 | std::sort (matches.begin (), matches.end ()); | |
4107 | ||
4108 | /* Finally call the callback, once per match. */ | |
4109 | ULONGEST prev = -1; | |
4110 | for (offset_type idx : matches) | |
4111 | { | |
4112 | if (prev != idx) | |
4113 | { | |
3b00ef10 TT |
4114 | if (!match_callback (idx)) |
4115 | break; | |
3f563c84 PA |
4116 | prev = idx; |
4117 | } | |
4118 | } | |
4119 | ||
4120 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4121 | (offset_type)-1 are both possible values. */ | |
4122 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4123 | } | |
4124 | ||
c62446b1 PA |
4125 | #if GDB_SELF_TEST |
4126 | ||
4127 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4128 | ||
a3c5fafd PA |
4129 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4130 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4131 | mapped_index_base interface. Builds an index from the symbol list | |
4132 | passed as parameter to the constructor. */ | |
4133 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4134 | { |
4135 | public: | |
a3c5fafd PA |
4136 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4137 | : m_symbol_table (symbols) | |
c62446b1 PA |
4138 | {} |
4139 | ||
a3c5fafd | 4140 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4141 | |
a3c5fafd | 4142 | /* Return the number of names in the symbol table. */ |
632e107b | 4143 | size_t symbol_name_count () const override |
c62446b1 | 4144 | { |
a3c5fafd | 4145 | return m_symbol_table.size (); |
c62446b1 PA |
4146 | } |
4147 | ||
a3c5fafd | 4148 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
4149 | const char *symbol_name_at |
4150 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
4151 | { |
4152 | return m_symbol_table[idx]; | |
4153 | } | |
c62446b1 | 4154 | |
a3c5fafd PA |
4155 | private: |
4156 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4157 | }; |
4158 | ||
4159 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4160 | string, to pass to print routines. */ | |
4161 | ||
4162 | static const char * | |
4163 | string_or_null (const char *str) | |
4164 | { | |
4165 | return str != NULL ? str : "<null>"; | |
4166 | } | |
4167 | ||
4168 | /* Check if a lookup_name_info built from | |
4169 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4170 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4171 | matching order. If no match expected, then an empty list is | |
4172 | specified. Returns true on success. On failure prints a warning | |
4173 | indicating the file:line that failed, and returns false. */ | |
4174 | ||
4175 | static bool | |
4176 | check_match (const char *file, int line, | |
4177 | mock_mapped_index &mock_index, | |
4178 | const char *name, symbol_name_match_type match_type, | |
4179 | bool completion_mode, | |
fcf23d5b SM |
4180 | std::initializer_list<const char *> expected_list, |
4181 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4182 | { |
4183 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4184 | ||
4185 | bool matched = true; | |
4186 | ||
4187 | auto mismatch = [&] (const char *expected_str, | |
4188 | const char *got) | |
4189 | { | |
4190 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4191 | "expected=\"%s\", got=\"%s\"\n"), | |
4192 | file, line, | |
4193 | (match_type == symbol_name_match_type::FULL | |
4194 | ? "FULL" : "WILD"), | |
4195 | name, string_or_null (expected_str), string_or_null (got)); | |
4196 | matched = false; | |
4197 | }; | |
4198 | ||
4199 | auto expected_it = expected_list.begin (); | |
4200 | auto expected_end = expected_list.end (); | |
4201 | ||
a3c5fafd | 4202 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4203 | NULL, ALL_DOMAIN, |
4204 | [&] (offset_type idx) | |
4205 | { | |
fcf23d5b | 4206 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4207 | const char *expected_str |
4208 | = expected_it == expected_end ? NULL : *expected_it++; | |
4209 | ||
4210 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4211 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4212 | return true; |
fcf23d5b | 4213 | }, per_objfile); |
c62446b1 PA |
4214 | |
4215 | const char *expected_str | |
4216 | = expected_it == expected_end ? NULL : *expected_it++; | |
4217 | if (expected_str != NULL) | |
4218 | mismatch (expected_str, NULL); | |
4219 | ||
4220 | return matched; | |
4221 | } | |
4222 | ||
4223 | /* The symbols added to the mock mapped_index for testing (in | |
4224 | canonical form). */ | |
4225 | static const char *test_symbols[] = { | |
4226 | "function", | |
4227 | "std::bar", | |
4228 | "std::zfunction", | |
4229 | "std::zfunction2", | |
4230 | "w1::w2", | |
4231 | "ns::foo<char*>", | |
4232 | "ns::foo<int>", | |
4233 | "ns::foo<long>", | |
a20714ff PA |
4234 | "ns2::tmpl<int>::foo2", |
4235 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4236 | |
e1ef7d7a PA |
4237 | /* These are used to check that the increment-last-char in the |
4238 | matching algorithm for completion doesn't match "t1_fund" when | |
4239 | completing "t1_func". */ | |
4240 | "t1_func", | |
4241 | "t1_func1", | |
4242 | "t1_fund", | |
4243 | "t1_fund1", | |
4244 | ||
4245 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4246 | cp-name-parser understands this as a single identifier ("função" | |
4247 | is "function" in PT). */ | |
4248 | u8"u8função", | |
4249 | ||
4250 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4251 | "yfunc\377", | |
4252 | ||
4253 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4254 | "\377", | |
4255 | "\377\377123", | |
4256 | ||
c62446b1 PA |
4257 | /* A name with all sorts of complications. Starts with "z" to make |
4258 | it easier for the completion tests below. */ | |
4259 | #define Z_SYM_NAME \ | |
4260 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4261 | "::tuple<(anonymous namespace)::ui*, " \ | |
4262 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4263 | ||
4264 | Z_SYM_NAME | |
4265 | }; | |
4266 | ||
a3c5fafd PA |
4267 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4268 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4269 | in completion mode. */ | |
5c58de74 PA |
4270 | |
4271 | static bool | |
a3c5fafd | 4272 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4273 | const char *search_name, |
fcf23d5b SM |
4274 | gdb::array_view<const char *> expected_syms, |
4275 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4276 | { |
4277 | lookup_name_info lookup_name (search_name, | |
4278 | symbol_name_match_type::FULL, true); | |
4279 | ||
3b00ef10 | 4280 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4281 | language_cplus, |
4282 | per_objfile); | |
5c58de74 PA |
4283 | |
4284 | size_t distance = std::distance (bounds.first, bounds.second); | |
4285 | if (distance != expected_syms.size ()) | |
4286 | return false; | |
4287 | ||
4288 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4289 | { | |
4290 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4291 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4292 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4293 | return false; | |
4294 | } | |
4295 | ||
4296 | return true; | |
4297 | } | |
4298 | ||
4299 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4300 | method. */ | |
4301 | ||
c62446b1 | 4302 | static void |
5c58de74 PA |
4303 | test_mapped_index_find_name_component_bounds () |
4304 | { | |
4305 | mock_mapped_index mock_index (test_symbols); | |
4306 | ||
fcf23d5b | 4307 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4308 | |
4309 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4310 | method in completion mode. */ | |
4311 | { | |
4312 | static const char *expected_syms[] = { | |
4313 | "t1_func", | |
4314 | "t1_func1", | |
5c58de74 PA |
4315 | }; |
4316 | ||
fcf23d5b SM |
4317 | SELF_CHECK (check_find_bounds_finds |
4318 | (mock_index, "t1_func", expected_syms, | |
4319 | NULL /* per_objfile */)); | |
5c58de74 PA |
4320 | } |
4321 | ||
4322 | /* Check that the increment-last-char in the name matching algorithm | |
4323 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4324 | { | |
4325 | static const char *expected_syms1[] = { | |
4326 | "\377", | |
4327 | "\377\377123", | |
4328 | }; | |
fcf23d5b SM |
4329 | SELF_CHECK (check_find_bounds_finds |
4330 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4331 | |
4332 | static const char *expected_syms2[] = { | |
4333 | "\377\377123", | |
4334 | }; | |
fcf23d5b SM |
4335 | SELF_CHECK (check_find_bounds_finds |
4336 | (mock_index, "\377\377", expected_syms2, | |
4337 | NULL /* per_objfile */)); | |
5c58de74 PA |
4338 | } |
4339 | } | |
4340 | ||
4341 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4342 | ||
4343 | static void | |
4344 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4345 | { |
4346 | mock_mapped_index mock_index (test_symbols); | |
4347 | ||
4348 | /* We let all tests run until the end even if some fails, for debug | |
4349 | convenience. */ | |
4350 | bool any_mismatch = false; | |
4351 | ||
4352 | /* Create the expected symbols list (an initializer_list). Needed | |
4353 | because lists have commas, and we need to pass them to CHECK, | |
4354 | which is a macro. */ | |
4355 | #define EXPECT(...) { __VA_ARGS__ } | |
4356 | ||
4357 | /* Wrapper for check_match that passes down the current | |
4358 | __FILE__/__LINE__. */ | |
4359 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4360 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4361 | mock_index, \ | |
4362 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4363 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4364 | |
4365 | /* Identity checks. */ | |
4366 | for (const char *sym : test_symbols) | |
4367 | { | |
4368 | /* Should be able to match all existing symbols. */ | |
4369 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4370 | EXPECT (sym)); | |
4371 | ||
4372 | /* Should be able to match all existing symbols with | |
4373 | parameters. */ | |
4374 | std::string with_params = std::string (sym) + "(int)"; | |
4375 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4376 | EXPECT (sym)); | |
4377 | ||
4378 | /* Should be able to match all existing symbols with | |
4379 | parameters and qualifiers. */ | |
4380 | with_params = std::string (sym) + " ( int ) const"; | |
4381 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4382 | EXPECT (sym)); | |
4383 | ||
4384 | /* This should really find sym, but cp-name-parser.y doesn't | |
4385 | know about lvalue/rvalue qualifiers yet. */ | |
4386 | with_params = std::string (sym) + " ( int ) &&"; | |
4387 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4388 | {}); | |
4389 | } | |
4390 | ||
e1ef7d7a PA |
4391 | /* Check that the name matching algorithm for completion doesn't get |
4392 | confused with Latin1 'ÿ' / 0xff. */ | |
4393 | { | |
4394 | static const char str[] = "\377"; | |
4395 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4396 | EXPECT ("\377", "\377\377123")); | |
4397 | } | |
4398 | ||
4399 | /* Check that the increment-last-char in the matching algorithm for | |
4400 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4401 | { | |
4402 | static const char str[] = "t1_func"; | |
4403 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4404 | EXPECT ("t1_func", "t1_func1")); | |
4405 | } | |
4406 | ||
c62446b1 PA |
4407 | /* Check that completion mode works at each prefix of the expected |
4408 | symbol name. */ | |
4409 | { | |
4410 | static const char str[] = "function(int)"; | |
4411 | size_t len = strlen (str); | |
4412 | std::string lookup; | |
4413 | ||
4414 | for (size_t i = 1; i < len; i++) | |
4415 | { | |
4416 | lookup.assign (str, i); | |
4417 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4418 | EXPECT ("function")); | |
4419 | } | |
4420 | } | |
4421 | ||
4422 | /* While "w" is a prefix of both components, the match function | |
4423 | should still only be called once. */ | |
4424 | { | |
4425 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4426 | EXPECT ("w1::w2")); | |
a20714ff PA |
4427 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4428 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4429 | } |
4430 | ||
4431 | /* Same, with a "complicated" symbol. */ | |
4432 | { | |
4433 | static const char str[] = Z_SYM_NAME; | |
4434 | size_t len = strlen (str); | |
4435 | std::string lookup; | |
4436 | ||
4437 | for (size_t i = 1; i < len; i++) | |
4438 | { | |
4439 | lookup.assign (str, i); | |
4440 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4441 | EXPECT (Z_SYM_NAME)); | |
4442 | } | |
4443 | } | |
4444 | ||
4445 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4446 | { | |
4447 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4448 | {}); | |
4449 | } | |
4450 | ||
4451 | /* A complete symbol with parameters matches any overload, since the | |
4452 | index has no overload info. */ | |
4453 | { | |
4454 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4455 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4456 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4457 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4458 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4459 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4460 | } |
4461 | ||
4462 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4463 | template argument list. */ | |
4464 | { | |
4465 | static const char expected[] = "ns::foo<int>"; | |
4466 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4467 | EXPECT (expected)); | |
a20714ff PA |
4468 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4469 | EXPECT (expected)); | |
c62446b1 PA |
4470 | } |
4471 | ||
4472 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4473 | template argument list that includes a pointer. */ | |
4474 | { | |
4475 | static const char expected[] = "ns::foo<char*>"; | |
4476 | /* Try both completion and non-completion modes. */ | |
4477 | static const bool completion_mode[2] = {false, true}; | |
4478 | for (size_t i = 0; i < 2; i++) | |
4479 | { | |
4480 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4481 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4482 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4483 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4484 | |
4485 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4486 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4487 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4488 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4489 | } |
4490 | } | |
4491 | ||
4492 | { | |
4493 | /* Check method qualifiers are ignored. */ | |
4494 | static const char expected[] = "ns::foo<char*>"; | |
4495 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4496 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4497 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4498 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4499 | CHECK_MATCH ("foo < char * > ( int ) const", |
4500 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4501 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4502 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4503 | } |
4504 | ||
4505 | /* Test lookup names that don't match anything. */ | |
4506 | { | |
a20714ff PA |
4507 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4508 | {}); | |
4509 | ||
c62446b1 PA |
4510 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4511 | {}); | |
4512 | } | |
4513 | ||
a20714ff PA |
4514 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4515 | which should not be confused with a parameter list. */ | |
4516 | { | |
4517 | static const char *syms[] = { | |
4518 | "A::B::C", | |
4519 | "B::C", | |
4520 | "C", | |
4521 | "A :: B :: C ( int )", | |
4522 | "B :: C ( int )", | |
4523 | "C ( int )", | |
4524 | }; | |
4525 | ||
4526 | for (const char *s : syms) | |
4527 | { | |
4528 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4529 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4530 | } | |
4531 | } | |
4532 | ||
4533 | { | |
4534 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4535 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4536 | EXPECT (expected)); | |
4537 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4538 | EXPECT (expected)); | |
4539 | } | |
4540 | ||
c62446b1 PA |
4541 | SELF_CHECK (!any_mismatch); |
4542 | ||
4543 | #undef EXPECT | |
4544 | #undef CHECK_MATCH | |
4545 | } | |
4546 | ||
5c58de74 PA |
4547 | static void |
4548 | run_test () | |
4549 | { | |
4550 | test_mapped_index_find_name_component_bounds (); | |
4551 | test_dw2_expand_symtabs_matching_symbol (); | |
4552 | } | |
4553 | ||
c62446b1 PA |
4554 | }} // namespace selftests::dw2_expand_symtabs_matching |
4555 | ||
4556 | #endif /* GDB_SELF_TEST */ | |
4557 | ||
4b514bc8 JK |
4558 | /* If FILE_MATCHER is NULL or if PER_CU has |
4559 | dwarf2_per_cu_quick_data::MARK set (see | |
4560 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4561 | EXPANSION_NOTIFY on it. */ | |
4562 | ||
4563 | static void | |
4564 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4565 | (dwarf2_per_cu_data *per_cu, |
4566 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4567 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4568 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4569 | { | |
4570 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4571 | { | |
af758d11 | 4572 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4573 | |
97a1449a SM |
4574 | compunit_symtab *symtab |
4575 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4576 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4577 | |
af758d11 SM |
4578 | if (expansion_notify != NULL && symtab_was_null) |
4579 | expansion_notify (symtab); | |
4b514bc8 JK |
4580 | } |
4581 | } | |
4582 | ||
3f563c84 PA |
4583 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4584 | matched, to expand corresponding CUs that were marked. IDX is the | |
4585 | index of the symbol name that matched. */ | |
4586 | ||
4587 | static void | |
4588 | dw2_expand_marked_cus | |
976ca316 | 4589 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4590 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4591 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4592 | search_domain kind) | |
4593 | { | |
3f563c84 PA |
4594 | offset_type *vec, vec_len, vec_idx; |
4595 | bool global_seen = false; | |
976ca316 | 4596 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4597 | |
61920122 | 4598 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4599 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4600 | vec_len = MAYBE_SWAP (vec[0]); |
4601 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4602 | { | |
61920122 PA |
4603 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4604 | /* This value is only valid for index versions >= 7. */ | |
4605 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4606 | gdb_index_symbol_kind symbol_kind = | |
4607 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4608 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4609 | /* Only check the symbol attributes if they're present. | |
4610 | Indices prior to version 7 don't record them, | |
4611 | and indices >= 7 may elide them for certain symbols | |
4612 | (gold does this). */ | |
4613 | int attrs_valid = | |
4614 | (index.version >= 7 | |
4615 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4616 | ||
4617 | /* Work around gold/15646. */ | |
f030440d TV |
4618 | if (attrs_valid |
4619 | && !is_static | |
4620 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4621 | { |
f030440d | 4622 | if (global_seen) |
61920122 | 4623 | continue; |
f030440d TV |
4624 | |
4625 | global_seen = true; | |
61920122 | 4626 | } |
3190f0c6 | 4627 | |
61920122 PA |
4628 | /* Only check the symbol's kind if it has one. */ |
4629 | if (attrs_valid) | |
4630 | { | |
4631 | switch (kind) | |
8943b874 | 4632 | { |
61920122 PA |
4633 | case VARIABLES_DOMAIN: |
4634 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4635 | continue; | |
4636 | break; | |
4637 | case FUNCTIONS_DOMAIN: | |
4638 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4639 | continue; |
61920122 PA |
4640 | break; |
4641 | case TYPES_DOMAIN: | |
4642 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4643 | continue; | |
4644 | break; | |
59c35742 AB |
4645 | case MODULES_DOMAIN: |
4646 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4647 | continue; | |
4648 | break; | |
61920122 PA |
4649 | default: |
4650 | break; | |
8943b874 | 4651 | } |
61920122 | 4652 | } |
8943b874 | 4653 | |
61920122 | 4654 | /* Don't crash on bad data. */ |
976ca316 SM |
4655 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
4656 | + per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4657 | { |
b98664d3 | 4658 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4659 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4660 | continue; |
4661 | } | |
4662 | ||
976ca316 SM |
4663 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
4664 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, | |
4b514bc8 | 4665 | expansion_notify); |
61920122 PA |
4666 | } |
4667 | } | |
4668 | ||
4b514bc8 JK |
4669 | /* If FILE_MATCHER is non-NULL, set all the |
4670 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4671 | that match FILE_MATCHER. */ | |
4672 | ||
61920122 | 4673 | static void |
4b514bc8 | 4674 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4675 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4676 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4677 | { |
4b514bc8 | 4678 | if (file_matcher == NULL) |
61920122 PA |
4679 | return; |
4680 | ||
4b514bc8 JK |
4681 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4682 | htab_eq_pointer, | |
4683 | NULL, xcalloc, xfree)); | |
4684 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4685 | htab_eq_pointer, |
4686 | NULL, xcalloc, xfree)); | |
61920122 | 4687 | |
4b514bc8 JK |
4688 | /* The rule is CUs specify all the files, including those used by |
4689 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4690 | |
976ca316 | 4691 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4692 | { |
927aa2e7 JK |
4693 | QUIT; |
4694 | ||
4695 | per_cu->v.quick->mark = 0; | |
4696 | ||
4697 | /* We only need to look at symtabs not already expanded. */ | |
976ca316 | 4698 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4699 | continue; |
4700 | ||
976ca316 | 4701 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4702 | if (file_data == NULL) |
4703 | continue; | |
4704 | ||
4705 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4706 | continue; | |
4707 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4708 | { | |
4709 | per_cu->v.quick->mark = 1; | |
4710 | continue; | |
4711 | } | |
4712 | ||
b76e467d | 4713 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4714 | { |
4715 | const char *this_real_name; | |
4716 | ||
4717 | if (file_matcher (file_data->file_names[j], false)) | |
4718 | { | |
4719 | per_cu->v.quick->mark = 1; | |
4720 | break; | |
4721 | } | |
4722 | ||
4723 | /* Before we invoke realpath, which can get expensive when many | |
4724 | files are involved, do a quick comparison of the basenames. */ | |
4725 | if (!basenames_may_differ | |
4726 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4727 | true)) | |
4728 | continue; | |
4729 | ||
976ca316 | 4730 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4731 | if (file_matcher (this_real_name, false)) |
4732 | { | |
4733 | per_cu->v.quick->mark = 1; | |
4734 | break; | |
4735 | } | |
4736 | } | |
4737 | ||
b76e467d SM |
4738 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4739 | ? visited_found.get () | |
4740 | : visited_not_found.get (), | |
4741 | file_data, INSERT); | |
927aa2e7 JK |
4742 | *slot = file_data; |
4743 | } | |
4744 | } | |
4745 | ||
4746 | static void | |
4747 | dw2_expand_symtabs_matching | |
4748 | (struct objfile *objfile, | |
4749 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4750 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4751 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4752 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4753 | enum search_domain kind) | |
4754 | { | |
976ca316 | 4755 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4756 | |
4757 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4758 | if (!per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4759 | return; |
4760 | ||
976ca316 | 4761 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4762 | |
c1a66c06 TV |
4763 | if (symbol_matcher == NULL && lookup_name == NULL) |
4764 | { | |
976ca316 | 4765 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4766 | { |
4767 | QUIT; | |
4768 | ||
976ca316 | 4769 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
97a1449a | 4770 | file_matcher, expansion_notify); |
c1a66c06 TV |
4771 | } |
4772 | return; | |
4773 | } | |
4774 | ||
976ca316 | 4775 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4776 | |
c1a66c06 | 4777 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4778 | symbol_matcher, |
4779 | kind, [&] (offset_type idx) | |
4780 | { | |
976ca316 SM |
4781 | dw2_expand_marked_cus (per_objfile, idx, file_matcher, expansion_notify, |
4782 | kind); | |
3b00ef10 | 4783 | return true; |
976ca316 | 4784 | }, per_objfile); |
927aa2e7 JK |
4785 | } |
4786 | ||
4787 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4788 | symtab. */ | |
4789 | ||
4790 | static struct compunit_symtab * | |
4791 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4792 | CORE_ADDR pc) | |
4793 | { | |
4794 | int i; | |
4795 | ||
4796 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4797 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4798 | return cust; | |
4799 | ||
4800 | if (cust->includes == NULL) | |
4801 | return NULL; | |
4802 | ||
4803 | for (i = 0; cust->includes[i]; ++i) | |
4804 | { | |
4805 | struct compunit_symtab *s = cust->includes[i]; | |
4806 | ||
4807 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4808 | if (s != NULL) | |
4809 | return s; | |
4810 | } | |
4811 | ||
4812 | return NULL; | |
4813 | } | |
4814 | ||
4815 | static struct compunit_symtab * | |
4816 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4817 | struct bound_minimal_symbol msymbol, | |
4818 | CORE_ADDR pc, | |
4819 | struct obj_section *section, | |
4820 | int warn_if_readin) | |
4821 | { | |
4822 | struct dwarf2_per_cu_data *data; | |
4823 | struct compunit_symtab *result; | |
4824 | ||
d320c2b5 | 4825 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4826 | return NULL; |
4827 | ||
b3b3bada | 4828 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4829 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4830 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4831 | if (!data) |
4832 | return NULL; | |
4833 | ||
af758d11 SM |
4834 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4835 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 4836 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4837 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4838 | |
97a1449a SM |
4839 | result = recursively_find_pc_sect_compunit_symtab |
4840 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4841 | ||
927aa2e7 JK |
4842 | gdb_assert (result != NULL); |
4843 | return result; | |
4844 | } | |
4845 | ||
4846 | static void | |
4847 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4848 | void *data, int need_fullname) | |
4849 | { | |
976ca316 | 4850 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 4851 | |
976ca316 | 4852 | if (!per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4853 | { |
976ca316 | 4854 | per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4855 | |
4856 | htab_up visited (htab_create_alloc (10, | |
4857 | htab_hash_pointer, htab_eq_pointer, | |
4858 | NULL, xcalloc, xfree)); | |
4859 | ||
4860 | /* The rule is CUs specify all the files, including those used | |
4861 | by any TU, so there's no need to scan TUs here. We can | |
4862 | ignore file names coming from already-expanded CUs. */ | |
4863 | ||
976ca316 | 4864 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4865 | { |
976ca316 | 4866 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4867 | { |
4868 | void **slot = htab_find_slot (visited.get (), | |
4869 | per_cu->v.quick->file_names, | |
4870 | INSERT); | |
4871 | ||
4872 | *slot = per_cu->v.quick->file_names; | |
4873 | } | |
4874 | } | |
4875 | ||
976ca316 | 4876 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4877 | { |
927aa2e7 | 4878 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 4879 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4880 | continue; |
4881 | ||
ab432490 | 4882 | quick_file_names *file_data |
976ca316 | 4883 | = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4884 | if (file_data == NULL) |
4885 | continue; | |
4886 | ||
b76e467d | 4887 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4888 | if (*slot) |
4889 | { | |
4890 | /* Already visited. */ | |
4891 | continue; | |
4892 | } | |
4893 | *slot = file_data; | |
4894 | ||
4895 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4896 | { | |
4897 | const char *filename = file_data->file_names[j]; | |
976ca316 | 4898 | per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
4899 | } |
4900 | } | |
4901 | } | |
4902 | ||
976ca316 | 4903 | per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
4904 | { |
4905 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4906 | ||
4907 | if (need_fullname) | |
4908 | this_real_name = gdb_realpath (filename); | |
4909 | (*fun) (filename, this_real_name.get (), data); | |
4910 | }); | |
4911 | } | |
4912 | ||
4913 | static int | |
4914 | dw2_has_symbols (struct objfile *objfile) | |
4915 | { | |
4916 | return 1; | |
4917 | } | |
4918 | ||
4919 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4920 | { | |
4921 | dw2_has_symbols, | |
4922 | dw2_find_last_source_symtab, | |
4923 | dw2_forget_cached_source_info, | |
4924 | dw2_map_symtabs_matching_filename, | |
4925 | dw2_lookup_symbol, | |
d3214198 | 4926 | NULL, |
927aa2e7 JK |
4927 | dw2_print_stats, |
4928 | dw2_dump, | |
927aa2e7 JK |
4929 | dw2_expand_symtabs_for_function, |
4930 | dw2_expand_all_symtabs, | |
4931 | dw2_expand_symtabs_with_fullname, | |
4932 | dw2_map_matching_symbols, | |
4933 | dw2_expand_symtabs_matching, | |
4934 | dw2_find_pc_sect_compunit_symtab, | |
4935 | NULL, | |
4936 | dw2_map_symbol_filenames | |
4937 | }; | |
4938 | ||
4939 | /* DWARF-5 debug_names reader. */ | |
4940 | ||
4941 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4942 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4943 | ||
4944 | /* A helper function that reads the .debug_names section in SECTION | |
4945 | and fills in MAP. FILENAME is the name of the file containing the | |
4946 | section; it is used for error reporting. | |
4947 | ||
4948 | Returns true if all went well, false otherwise. */ | |
4949 | ||
4950 | static bool | |
4951 | read_debug_names_from_section (struct objfile *objfile, | |
4952 | const char *filename, | |
4953 | struct dwarf2_section_info *section, | |
4954 | mapped_debug_names &map) | |
4955 | { | |
96b79293 | 4956 | if (section->empty ()) |
927aa2e7 JK |
4957 | return false; |
4958 | ||
4959 | /* Older elfutils strip versions could keep the section in the main | |
4960 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4961 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4962 | return false; |
4963 | ||
96b79293 | 4964 | section->read (objfile); |
927aa2e7 | 4965 | |
08feed99 | 4966 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
4967 | |
4968 | const gdb_byte *addr = section->buffer; | |
4969 | ||
96b79293 | 4970 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4971 | |
4972 | unsigned int bytes_read; | |
4973 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4974 | addr += bytes_read; | |
4975 | ||
4976 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4977 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4978 | if (bytes_read + length != section->size) | |
4979 | { | |
4980 | /* There may be multiple per-CU indices. */ | |
4981 | warning (_("Section .debug_names in %s length %s does not match " | |
4982 | "section length %s, ignoring .debug_names."), | |
4983 | filename, plongest (bytes_read + length), | |
4984 | pulongest (section->size)); | |
4985 | return false; | |
4986 | } | |
4987 | ||
4988 | /* The version number. */ | |
4989 | uint16_t version = read_2_bytes (abfd, addr); | |
4990 | addr += 2; | |
4991 | if (version != 5) | |
4992 | { | |
4993 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4994 | "ignoring .debug_names."), | |
4995 | filename, version); | |
4996 | return false; | |
4997 | } | |
4998 | ||
4999 | /* Padding. */ | |
5000 | uint16_t padding = read_2_bytes (abfd, addr); | |
5001 | addr += 2; | |
5002 | if (padding != 0) | |
5003 | { | |
5004 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5005 | "ignoring .debug_names."), | |
5006 | filename, padding); | |
5007 | return false; | |
5008 | } | |
5009 | ||
5010 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5011 | map.cu_count = read_4_bytes (abfd, addr); | |
5012 | addr += 4; | |
5013 | ||
5014 | /* local_type_unit_count - The number of TUs in the local TU | |
5015 | list. */ | |
5016 | map.tu_count = read_4_bytes (abfd, addr); | |
5017 | addr += 4; | |
5018 | ||
5019 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5020 | list. */ | |
5021 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5022 | addr += 4; | |
5023 | if (foreign_tu_count != 0) | |
5024 | { | |
5025 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5026 | "ignoring .debug_names."), | |
5027 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5028 | return false; | |
5029 | } | |
5030 | ||
5031 | /* bucket_count - The number of hash buckets in the hash lookup | |
5032 | table. */ | |
5033 | map.bucket_count = read_4_bytes (abfd, addr); | |
5034 | addr += 4; | |
5035 | ||
5036 | /* name_count - The number of unique names in the index. */ | |
5037 | map.name_count = read_4_bytes (abfd, addr); | |
5038 | addr += 4; | |
5039 | ||
5040 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5041 | table. */ | |
5042 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5043 | addr += 4; | |
5044 | ||
5045 | /* augmentation_string_size - The size in bytes of the augmentation | |
5046 | string. This value is rounded up to a multiple of 4. */ | |
5047 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5048 | addr += 4; | |
5049 | map.augmentation_is_gdb = ((augmentation_string_size | |
5050 | == sizeof (dwarf5_augmentation)) | |
5051 | && memcmp (addr, dwarf5_augmentation, | |
5052 | sizeof (dwarf5_augmentation)) == 0); | |
5053 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5054 | addr += augmentation_string_size; | |
5055 | ||
5056 | /* List of CUs */ | |
5057 | map.cu_table_reordered = addr; | |
5058 | addr += map.cu_count * map.offset_size; | |
5059 | ||
5060 | /* List of Local TUs */ | |
5061 | map.tu_table_reordered = addr; | |
5062 | addr += map.tu_count * map.offset_size; | |
5063 | ||
5064 | /* Hash Lookup Table */ | |
5065 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5066 | addr += map.bucket_count * 4; | |
5067 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5068 | addr += map.name_count * 4; | |
5069 | ||
5070 | /* Name Table */ | |
5071 | map.name_table_string_offs_reordered = addr; | |
5072 | addr += map.name_count * map.offset_size; | |
5073 | map.name_table_entry_offs_reordered = addr; | |
5074 | addr += map.name_count * map.offset_size; | |
5075 | ||
5076 | const gdb_byte *abbrev_table_start = addr; | |
5077 | for (;;) | |
5078 | { | |
927aa2e7 JK |
5079 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5080 | addr += bytes_read; | |
5081 | if (index_num == 0) | |
5082 | break; | |
5083 | ||
5084 | const auto insertpair | |
5085 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5086 | if (!insertpair.second) | |
5087 | { | |
5088 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5089 | "ignoring .debug_names."), | |
5090 | filename, pulongest (index_num)); | |
5091 | return false; | |
5092 | } | |
5093 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5094 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5095 | addr += bytes_read; | |
5096 | ||
5097 | for (;;) | |
5098 | { | |
5099 | mapped_debug_names::index_val::attr attr; | |
5100 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5101 | addr += bytes_read; | |
5102 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5103 | addr += bytes_read; | |
5104 | if (attr.form == DW_FORM_implicit_const) | |
5105 | { | |
5106 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5107 | &bytes_read); | |
5108 | addr += bytes_read; | |
5109 | } | |
5110 | if (attr.dw_idx == 0 && attr.form == 0) | |
5111 | break; | |
5112 | indexval.attr_vec.push_back (std::move (attr)); | |
5113 | } | |
5114 | } | |
5115 | if (addr != abbrev_table_start + abbrev_table_size) | |
5116 | { | |
5117 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5118 | "of size %s vs. written as %u, ignoring .debug_names."), |
5119 | filename, plongest (addr - abbrev_table_start), | |
5120 | abbrev_table_size); | |
927aa2e7 JK |
5121 | return false; |
5122 | } | |
5123 | map.entry_pool = addr; | |
5124 | ||
5125 | return true; | |
5126 | } | |
5127 | ||
5128 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5129 | list. */ | |
5130 | ||
5131 | static void | |
168c9250 | 5132 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5133 | const mapped_debug_names &map, |
5134 | dwarf2_section_info §ion, | |
b76e467d | 5135 | bool is_dwz) |
927aa2e7 | 5136 | { |
3ee6bb11 TV |
5137 | if (!map.augmentation_is_gdb) |
5138 | { | |
5139 | for (uint32_t i = 0; i < map.cu_count; ++i) | |
5140 | { | |
5141 | sect_offset sect_off | |
5142 | = (sect_offset) (extract_unsigned_integer | |
5143 | (map.cu_table_reordered + i * map.offset_size, | |
5144 | map.offset_size, | |
5145 | map.dwarf5_byte_order)); | |
5146 | /* We don't know the length of the CU, because the CU list in a | |
5147 | .debug_names index can be incomplete, so we can't use the start of | |
5148 | the next CU as end of this CU. We create the CUs here with length 0, | |
5149 | and in cutu_reader::cutu_reader we'll fill in the actual length. */ | |
5150 | dwarf2_per_cu_data *per_cu | |
168c9250 SM |
5151 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, sect_off, 0); |
5152 | per_bfd->all_comp_units.push_back (per_cu); | |
3ee6bb11 TV |
5153 | } |
5154 | } | |
5155 | ||
927aa2e7 JK |
5156 | sect_offset sect_off_prev; |
5157 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5158 | { | |
5159 | sect_offset sect_off_next; | |
5160 | if (i < map.cu_count) | |
5161 | { | |
5162 | sect_off_next | |
5163 | = (sect_offset) (extract_unsigned_integer | |
5164 | (map.cu_table_reordered + i * map.offset_size, | |
5165 | map.offset_size, | |
5166 | map.dwarf5_byte_order)); | |
5167 | } | |
5168 | else | |
5169 | sect_off_next = (sect_offset) section.size; | |
5170 | if (i >= 1) | |
5171 | { | |
5172 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5173 | dwarf2_per_cu_data *per_cu |
168c9250 | 5174 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5175 | sect_off_prev, length); |
168c9250 | 5176 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5177 | } |
5178 | sect_off_prev = sect_off_next; | |
5179 | } | |
5180 | } | |
5181 | ||
5182 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5183 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5184 | |
5185 | static void | |
168c9250 | 5186 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5187 | const mapped_debug_names &map, |
5188 | const mapped_debug_names &dwz_map) | |
5189 | { | |
168c9250 SM |
5190 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5191 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5192 | |
168c9250 | 5193 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5194 | false /* is_dwz */); |
927aa2e7 JK |
5195 | |
5196 | if (dwz_map.cu_count == 0) | |
5197 | return; | |
5198 | ||
168c9250 SM |
5199 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5200 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5201 | true /* is_dwz */); |
927aa2e7 JK |
5202 | } |
5203 | ||
5204 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5205 | elements of all the CUs and return true. Otherwise, return false. */ | |
5206 | ||
5207 | static bool | |
976ca316 | 5208 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 5209 | { |
fcf23d5b SM |
5210 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5211 | mapped_debug_names dwz_map; | |
976ca316 | 5212 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 5213 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
5214 | |
5215 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
976ca316 | 5216 | &per_objfile->per_bfd->debug_names, *map)) |
927aa2e7 JK |
5217 | return false; |
5218 | ||
5219 | /* Don't use the index if it's empty. */ | |
22ca247e | 5220 | if (map->name_count == 0) |
927aa2e7 JK |
5221 | return false; |
5222 | ||
5223 | /* If there is a .dwz file, read it so we can get its CU list as | |
5224 | well. */ | |
f8c41851 | 5225 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5226 | if (dwz != NULL) |
5227 | { | |
5228 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5229 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5230 | &dwz->debug_names, dwz_map)) |
5231 | { | |
5232 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5233 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5234 | return false; |
5235 | } | |
5236 | } | |
5237 | ||
f8c41851 | 5238 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5239 | |
22ca247e | 5240 | if (map->tu_count != 0) |
927aa2e7 JK |
5241 | { |
5242 | /* We can only handle a single .debug_types when we have an | |
5243 | index. */ | |
f8c41851 | 5244 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5245 | return false; |
5246 | ||
f8c41851 | 5247 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5248 | |
5249 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5250 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5251 | } |
5252 | ||
f8c41851 | 5253 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5254 | |
f8c41851 SM |
5255 | per_bfd->debug_names_table = std::move (map); |
5256 | per_bfd->using_index = 1; | |
5257 | per_bfd->quick_file_names_table = | |
976ca316 | 5258 | create_quick_file_names_table (per_objfile->per_bfd->all_comp_units.size ()); |
927aa2e7 | 5259 | |
f8c41851 SM |
5260 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent |
5261 | objfiles using the same BFD. */ | |
5262 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
5263 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
5264 | ||
927aa2e7 JK |
5265 | return true; |
5266 | } | |
5267 | ||
927aa2e7 JK |
5268 | /* Type used to manage iterating over all CUs looking for a symbol for |
5269 | .debug_names. */ | |
5270 | ||
5271 | class dw2_debug_names_iterator | |
5272 | { | |
5273 | public: | |
927aa2e7 | 5274 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5275 | gdb::optional<block_enum> block_index, |
5276 | domain_enum domain, | |
fcf23d5b | 5277 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5278 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5279 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5280 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5281 | {} |
5282 | ||
5283 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
fcf23d5b | 5284 | search_domain search, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5285 | : m_map (map), |
5286 | m_search (search), | |
fcf23d5b SM |
5287 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5288 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5289 | {} |
5290 | ||
3b00ef10 TT |
5291 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5292 | block_enum block_index, domain_enum domain, | |
fcf23d5b | 5293 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5294 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5295 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5296 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5297 | {} |
5298 | ||
927aa2e7 JK |
5299 | /* Return the next matching CU or NULL if there are no more. */ |
5300 | dwarf2_per_cu_data *next (); | |
5301 | ||
5302 | private: | |
5303 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5304 | const char *name, |
5305 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5306 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5307 | uint32_t namei, |
5308 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5309 | |
5310 | /* The internalized form of .debug_names. */ | |
5311 | const mapped_debug_names &m_map; | |
5312 | ||
2b79f376 SM |
5313 | /* If set, only look for symbols that match that block. Valid values are |
5314 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5315 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5316 | |
5317 | /* The kind of symbol we're looking for. */ | |
5318 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5319 | const search_domain m_search = ALL_DOMAIN; | |
5320 | ||
5321 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5322 | not found. */ | |
5323 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5324 | |
5325 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5326 | }; |
5327 | ||
5328 | const char * | |
fcf23d5b | 5329 | mapped_debug_names::namei_to_name |
976ca316 | 5330 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5331 | { |
5332 | const ULONGEST namei_string_offs | |
5333 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5334 | + namei * offset_size), | |
5335 | offset_size, | |
5336 | dwarf5_byte_order); | |
976ca316 | 5337 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5338 | } |
5339 | ||
5340 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5341 | found, return pointer to its pool data. If NAME cannot be found, | |
5342 | return NULL. */ | |
5343 | ||
5344 | const gdb_byte * | |
5345 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5346 | (const mapped_debug_names &map, const char *name, |
5347 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5348 | { |
5349 | int (*cmp) (const char *, const char *); | |
5350 | ||
54ee4252 | 5351 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5352 | if (current_language->la_language == language_cplus |
5353 | || current_language->la_language == language_fortran | |
5354 | || current_language->la_language == language_d) | |
5355 | { | |
5356 | /* NAME is already canonical. Drop any qualifiers as | |
5357 | .debug_names does not contain any. */ | |
5358 | ||
5359 | if (strchr (name, '(') != NULL) | |
5360 | { | |
54ee4252 | 5361 | without_params = cp_remove_params (name); |
927aa2e7 | 5362 | if (without_params != NULL) |
54ee4252 | 5363 | name = without_params.get (); |
927aa2e7 JK |
5364 | } |
5365 | } | |
5366 | ||
5367 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5368 | ||
5369 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5370 | uint32_t namei | |
5371 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5372 | (map.bucket_table_reordered | |
5373 | + (full_hash % map.bucket_count)), 4, | |
5374 | map.dwarf5_byte_order); | |
5375 | if (namei == 0) | |
5376 | return NULL; | |
5377 | --namei; | |
5378 | if (namei >= map.name_count) | |
5379 | { | |
b98664d3 | 5380 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5381 | "[in module %s]"), |
5382 | namei, map.name_count, | |
fcf23d5b | 5383 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5384 | return NULL; |
5385 | } | |
5386 | ||
5387 | for (;;) | |
5388 | { | |
5389 | const uint32_t namei_full_hash | |
5390 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5391 | (map.hash_table_reordered + namei), 4, | |
5392 | map.dwarf5_byte_order); | |
5393 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5394 | return NULL; | |
5395 | ||
5396 | if (full_hash == namei_full_hash) | |
5397 | { | |
fcf23d5b | 5398 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5399 | |
5400 | #if 0 /* An expensive sanity check. */ | |
5401 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5402 | { | |
b98664d3 | 5403 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5404 | "[in module %s]"), |
5405 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5406 | return NULL; | |
5407 | } | |
5408 | #endif | |
5409 | ||
5410 | if (cmp (namei_string, name) == 0) | |
5411 | { | |
5412 | const ULONGEST namei_entry_offs | |
5413 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5414 | + namei * map.offset_size), | |
5415 | map.offset_size, map.dwarf5_byte_order); | |
5416 | return map.entry_pool + namei_entry_offs; | |
5417 | } | |
5418 | } | |
5419 | ||
5420 | ++namei; | |
5421 | if (namei >= map.name_count) | |
5422 | return NULL; | |
5423 | } | |
5424 | } | |
5425 | ||
5426 | const gdb_byte * | |
5427 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5428 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5429 | { |
5430 | if (namei >= map.name_count) | |
5431 | { | |
b98664d3 | 5432 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5433 | "[in module %s]"), |
5434 | namei, map.name_count, | |
fcf23d5b | 5435 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5436 | return NULL; |
5437 | } | |
5438 | ||
5439 | const ULONGEST namei_entry_offs | |
5440 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5441 | + namei * map.offset_size), | |
5442 | map.offset_size, map.dwarf5_byte_order); | |
5443 | return map.entry_pool + namei_entry_offs; | |
5444 | } | |
5445 | ||
5446 | /* See dw2_debug_names_iterator. */ | |
5447 | ||
5448 | dwarf2_per_cu_data * | |
5449 | dw2_debug_names_iterator::next () | |
5450 | { | |
5451 | if (m_addr == NULL) | |
5452 | return NULL; | |
5453 | ||
fcf23d5b SM |
5454 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5455 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5456 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5457 | |
5458 | again: | |
5459 | ||
5460 | unsigned int bytes_read; | |
5461 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5462 | m_addr += bytes_read; | |
5463 | if (abbrev == 0) | |
5464 | return NULL; | |
5465 | ||
5466 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5467 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5468 | { | |
b98664d3 | 5469 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5470 | "[in module %s]"), |
ed2dc618 | 5471 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5472 | return NULL; |
5473 | } | |
5474 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5475 | enum class symbol_linkage { |
5476 | unknown, | |
5477 | static_, | |
5478 | extern_, | |
23c13d42 | 5479 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5480 | dwarf2_per_cu_data *per_cu = NULL; |
5481 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5482 | { | |
5483 | ULONGEST ull; | |
5484 | switch (attr.form) | |
5485 | { | |
5486 | case DW_FORM_implicit_const: | |
5487 | ull = attr.implicit_const; | |
5488 | break; | |
5489 | case DW_FORM_flag_present: | |
5490 | ull = 1; | |
5491 | break; | |
5492 | case DW_FORM_udata: | |
5493 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5494 | m_addr += bytes_read; | |
5495 | break; | |
6dc55ce9 | 5496 | case DW_FORM_ref4: |
5497 | ull = read_4_bytes (abfd, m_addr); | |
5498 | m_addr += 4; | |
5499 | break; | |
5500 | case DW_FORM_ref8: | |
5501 | ull = read_8_bytes (abfd, m_addr); | |
5502 | m_addr += 8; | |
5503 | break; | |
5504 | case DW_FORM_ref_sig8: | |
5505 | ull = read_8_bytes (abfd, m_addr); | |
5506 | m_addr += 8; | |
5507 | break; | |
927aa2e7 | 5508 | default: |
b98664d3 | 5509 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5510 | dwarf_form_name (attr.form), |
ed2dc618 | 5511 | objfile_name (objfile)); |
927aa2e7 JK |
5512 | return NULL; |
5513 | } | |
5514 | switch (attr.dw_idx) | |
5515 | { | |
5516 | case DW_IDX_compile_unit: | |
5517 | /* Don't crash on bad data. */ | |
fcf23d5b | 5518 | if (ull >= m_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5519 | { |
b98664d3 | 5520 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5521 | " [in module %s]"), |
5522 | pulongest (ull), | |
fcf23d5b | 5523 | objfile_name (objfile)); |
927aa2e7 JK |
5524 | continue; |
5525 | } | |
fcf23d5b | 5526 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5527 | break; |
8af5c486 JK |
5528 | case DW_IDX_type_unit: |
5529 | /* Don't crash on bad data. */ | |
fcf23d5b | 5530 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5531 | { |
b98664d3 | 5532 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5533 | " [in module %s]"), |
5534 | pulongest (ull), | |
fcf23d5b | 5535 | objfile_name (objfile)); |
8af5c486 JK |
5536 | continue; |
5537 | } | |
fcf23d5b | 5538 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5539 | break; |
6dc55ce9 | 5540 | case DW_IDX_die_offset: |
5541 | /* In a per-CU index (as opposed to a per-module index), index | |
5542 | entries without CU attribute implicitly refer to the single CU. */ | |
5543 | if (per_cu == NULL) | |
fcf23d5b | 5544 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5545 | break; |
927aa2e7 JK |
5546 | case DW_IDX_GNU_internal: |
5547 | if (!m_map.augmentation_is_gdb) | |
5548 | break; | |
23c13d42 | 5549 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5550 | break; |
5551 | case DW_IDX_GNU_external: | |
5552 | if (!m_map.augmentation_is_gdb) | |
5553 | break; | |
23c13d42 | 5554 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5555 | break; |
5556 | } | |
5557 | } | |
5558 | ||
5559 | /* Skip if already read in. */ | |
fcf23d5b | 5560 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5561 | goto again; |
5562 | ||
5563 | /* Check static vs global. */ | |
23c13d42 | 5564 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5565 | { |
2b79f376 | 5566 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5567 | const bool symbol_is_static = |
5568 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5569 | if (want_static != symbol_is_static) |
2b79f376 | 5570 | goto again; |
927aa2e7 JK |
5571 | } |
5572 | ||
5573 | /* Match dw2_symtab_iter_next, symbol_kind | |
5574 | and debug_names::psymbol_tag. */ | |
5575 | switch (m_domain) | |
5576 | { | |
5577 | case VAR_DOMAIN: | |
5578 | switch (indexval.dwarf_tag) | |
5579 | { | |
5580 | case DW_TAG_variable: | |
5581 | case DW_TAG_subprogram: | |
5582 | /* Some types are also in VAR_DOMAIN. */ | |
5583 | case DW_TAG_typedef: | |
5584 | case DW_TAG_structure_type: | |
5585 | break; | |
5586 | default: | |
5587 | goto again; | |
5588 | } | |
5589 | break; | |
5590 | case STRUCT_DOMAIN: | |
5591 | switch (indexval.dwarf_tag) | |
5592 | { | |
5593 | case DW_TAG_typedef: | |
5594 | case DW_TAG_structure_type: | |
5595 | break; | |
5596 | default: | |
5597 | goto again; | |
5598 | } | |
5599 | break; | |
5600 | case LABEL_DOMAIN: | |
5601 | switch (indexval.dwarf_tag) | |
5602 | { | |
5603 | case 0: | |
5604 | case DW_TAG_variable: | |
5605 | break; | |
5606 | default: | |
5607 | goto again; | |
5608 | } | |
5609 | break; | |
59c35742 AB |
5610 | case MODULE_DOMAIN: |
5611 | switch (indexval.dwarf_tag) | |
5612 | { | |
5613 | case DW_TAG_module: | |
5614 | break; | |
5615 | default: | |
5616 | goto again; | |
5617 | } | |
5618 | break; | |
927aa2e7 JK |
5619 | default: |
5620 | break; | |
5621 | } | |
5622 | ||
5623 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5624 | debug_names::psymbol_tag. */ | |
5625 | switch (m_search) | |
4b514bc8 | 5626 | { |
927aa2e7 JK |
5627 | case VARIABLES_DOMAIN: |
5628 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5629 | { |
927aa2e7 JK |
5630 | case DW_TAG_variable: |
5631 | break; | |
5632 | default: | |
5633 | goto again; | |
4b514bc8 | 5634 | } |
927aa2e7 JK |
5635 | break; |
5636 | case FUNCTIONS_DOMAIN: | |
5637 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5638 | { |
927aa2e7 JK |
5639 | case DW_TAG_subprogram: |
5640 | break; | |
5641 | default: | |
5642 | goto again; | |
4b514bc8 | 5643 | } |
927aa2e7 JK |
5644 | break; |
5645 | case TYPES_DOMAIN: | |
5646 | switch (indexval.dwarf_tag) | |
5647 | { | |
5648 | case DW_TAG_typedef: | |
5649 | case DW_TAG_structure_type: | |
5650 | break; | |
5651 | default: | |
5652 | goto again; | |
5653 | } | |
5654 | break; | |
59c35742 AB |
5655 | case MODULES_DOMAIN: |
5656 | switch (indexval.dwarf_tag) | |
5657 | { | |
5658 | case DW_TAG_module: | |
5659 | break; | |
5660 | default: | |
5661 | goto again; | |
5662 | } | |
927aa2e7 JK |
5663 | default: |
5664 | break; | |
4b514bc8 | 5665 | } |
927aa2e7 JK |
5666 | |
5667 | return per_cu; | |
4b514bc8 | 5668 | } |
61920122 | 5669 | |
927aa2e7 | 5670 | static struct compunit_symtab * |
c7f839cb | 5671 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5672 | const char *name, domain_enum domain) |
4b514bc8 | 5673 | { |
976ca316 | 5674 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
61920122 | 5675 | |
976ca316 | 5676 | const auto &mapp = per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5677 | if (!mapp) |
61920122 | 5678 | { |
927aa2e7 JK |
5679 | /* index is NULL if OBJF_READNOW. */ |
5680 | return NULL; | |
5681 | } | |
5682 | const auto &map = *mapp; | |
9291a0cd | 5683 | |
976ca316 | 5684 | dw2_debug_names_iterator iter (map, block_index, domain, name, per_objfile); |
9703b513 | 5685 | |
927aa2e7 JK |
5686 | struct compunit_symtab *stab_best = NULL; |
5687 | struct dwarf2_per_cu_data *per_cu; | |
5688 | while ((per_cu = iter.next ()) != NULL) | |
5689 | { | |
5690 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 5691 | compunit_symtab *stab |
976ca316 | 5692 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 | 5693 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5694 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5695 | |
927aa2e7 JK |
5696 | sym = block_find_symbol (block, name, domain, |
5697 | block_find_non_opaque_type_preferred, | |
5698 | &with_opaque); | |
9703b513 | 5699 | |
927aa2e7 JK |
5700 | /* Some caution must be observed with overloaded functions and |
5701 | methods, since the index will not contain any overload | |
5702 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5703 | |
927aa2e7 | 5704 | if (sym != NULL |
987012b8 | 5705 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5706 | return stab; |
5707 | if (with_opaque != NULL | |
987012b8 | 5708 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5709 | stab_best = stab; |
9703b513 | 5710 | |
927aa2e7 | 5711 | /* Keep looking through other CUs. */ |
9703b513 TT |
5712 | } |
5713 | ||
927aa2e7 | 5714 | return stab_best; |
9703b513 TT |
5715 | } |
5716 | ||
927aa2e7 JK |
5717 | /* This dumps minimal information about .debug_names. It is called |
5718 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5719 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5720 | |
927aa2e7 JK |
5721 | static void |
5722 | dw2_debug_names_dump (struct objfile *objfile) | |
5723 | { | |
976ca316 | 5724 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5725 | |
976ca316 | 5726 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5727 | printf_filtered (".debug_names:"); |
976ca316 | 5728 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5729 | printf_filtered (" exists\n"); |
5730 | else | |
5731 | printf_filtered (" faked for \"readnow\"\n"); | |
5732 | printf_filtered ("\n"); | |
9291a0cd TT |
5733 | } |
5734 | ||
9291a0cd | 5735 | static void |
927aa2e7 JK |
5736 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5737 | const char *func_name) | |
9291a0cd | 5738 | { |
976ca316 | 5739 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 5740 | |
976ca316 SM |
5741 | /* per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5742 | if (per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5743 | { |
976ca316 | 5744 | const mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
24c79950 | 5745 | |
fcf23d5b | 5746 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name, |
976ca316 | 5747 | per_objfile); |
24c79950 | 5748 | |
927aa2e7 JK |
5749 | struct dwarf2_per_cu_data *per_cu; |
5750 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5751 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 JK |
5752 | } |
5753 | } | |
24c79950 | 5754 | |
3b00ef10 TT |
5755 | static void |
5756 | dw2_debug_names_map_matching_symbols | |
5757 | (struct objfile *objfile, | |
5758 | const lookup_name_info &name, domain_enum domain, | |
5759 | int global, | |
5760 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5761 | symbol_compare_ftype *ordered_compare) | |
5762 | { | |
976ca316 | 5763 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5764 | |
5765 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5766 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5767 | return; |
5768 | ||
976ca316 | 5769 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5770 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5771 | ||
5772 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5773 | auto matcher = [&] (const char *symname) | |
5774 | { | |
5775 | if (ordered_compare == nullptr) | |
5776 | return true; | |
5777 | return ordered_compare (symname, match_name) == 0; | |
5778 | }; | |
5779 | ||
5780 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5781 | [&] (offset_type namei) | |
5782 | { | |
5783 | /* The name was matched, now expand corresponding CUs that were | |
5784 | marked. */ | |
fcf23d5b | 5785 | dw2_debug_names_iterator iter (map, block_kind, domain, namei, |
976ca316 | 5786 | per_objfile); |
3b00ef10 TT |
5787 | |
5788 | struct dwarf2_per_cu_data *per_cu; | |
5789 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5790 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5791 | nullptr); |
3b00ef10 | 5792 | return true; |
976ca316 | 5793 | }, per_objfile); |
3b00ef10 TT |
5794 | |
5795 | /* It's a shame we couldn't do this inside the | |
5796 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5797 | that have already been expanded. Instead, this loop matches what | |
5798 | the psymtab code does. */ | |
976ca316 | 5799 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5800 | { |
976ca316 | 5801 | compunit_symtab *symtab = per_objfile->get_symtab (per_cu); |
af758d11 | 5802 | if (symtab != nullptr) |
3b00ef10 TT |
5803 | { |
5804 | const struct block *block | |
af758d11 | 5805 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5806 | if (!iterate_over_symbols_terminated (block, name, |
5807 | domain, callback)) | |
5808 | break; | |
5809 | } | |
5810 | } | |
5811 | } | |
5812 | ||
927aa2e7 JK |
5813 | static void |
5814 | dw2_debug_names_expand_symtabs_matching | |
5815 | (struct objfile *objfile, | |
5816 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5817 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5818 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5819 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5820 | enum search_domain kind) | |
5821 | { | |
976ca316 | 5822 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 5823 | |
927aa2e7 | 5824 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 5825 | if (!per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5826 | return; |
9291a0cd | 5827 | |
976ca316 | 5828 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 5829 | |
c1a66c06 TV |
5830 | if (symbol_matcher == NULL && lookup_name == NULL) |
5831 | { | |
976ca316 | 5832 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5833 | { |
5834 | QUIT; | |
5835 | ||
976ca316 SM |
5836 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5837 | expansion_notify); | |
c1a66c06 TV |
5838 | } |
5839 | return; | |
5840 | } | |
5841 | ||
976ca316 | 5842 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5843 | |
c1a66c06 | 5844 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
5845 | symbol_matcher, |
5846 | kind, [&] (offset_type namei) | |
927aa2e7 | 5847 | { |
927aa2e7 JK |
5848 | /* The name was matched, now expand corresponding CUs that were |
5849 | marked. */ | |
976ca316 | 5850 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile); |
bbf2f4df | 5851 | |
927aa2e7 JK |
5852 | struct dwarf2_per_cu_data *per_cu; |
5853 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 SM |
5854 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5855 | expansion_notify); | |
3b00ef10 | 5856 | return true; |
976ca316 | 5857 | }, per_objfile); |
9291a0cd TT |
5858 | } |
5859 | ||
927aa2e7 | 5860 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5861 | { |
5862 | dw2_has_symbols, | |
5863 | dw2_find_last_source_symtab, | |
5864 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5865 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5866 | dw2_debug_names_lookup_symbol, |
d3214198 | 5867 | NULL, |
9291a0cd | 5868 | dw2_print_stats, |
927aa2e7 | 5869 | dw2_debug_names_dump, |
927aa2e7 | 5870 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5871 | dw2_expand_all_symtabs, |
652a8996 | 5872 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5873 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5874 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5875 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5876 | NULL, |
9291a0cd TT |
5877 | dw2_map_symbol_filenames |
5878 | }; | |
5879 | ||
4485a1c1 | 5880 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5881 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5882 | |
5883 | template <typename T> | |
5884 | static gdb::array_view<const gdb_byte> | |
5885 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5886 | { | |
5887 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5888 | ||
96b79293 | 5889 | if (section->empty ()) |
4485a1c1 SM |
5890 | return {}; |
5891 | ||
5892 | /* Older elfutils strip versions could keep the section in the main | |
5893 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5894 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5895 | return {}; |
5896 | ||
96b79293 | 5897 | section->read (obj); |
4485a1c1 | 5898 | |
8bebfcda PA |
5899 | /* dwarf2_section_info::size is a bfd_size_type, while |
5900 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5901 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5902 | is 32-bit. So we need an explicit narrowing conversion here. | |
5903 | This is fine, because it's impossible to allocate or mmap an | |
5904 | array/buffer larger than what size_t can represent. */ | |
5905 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5906 | } |
5907 | ||
87d6a7aa SM |
5908 | /* Lookup the index cache for the contents of the index associated to |
5909 | DWARF2_OBJ. */ | |
5910 | ||
5911 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5912 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5913 | { |
5914 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5915 | if (build_id == nullptr) | |
5916 | return {}; | |
5917 | ||
5918 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5919 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5920 | } |
5921 | ||
5922 | /* Same as the above, but for DWZ. */ | |
5923 | ||
5924 | static gdb::array_view<const gdb_byte> | |
5925 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5926 | { | |
5927 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5928 | if (build_id == nullptr) | |
5929 | return {}; | |
5930 | ||
5931 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5932 | } | |
5933 | ||
3c0aa29a | 5934 | /* See symfile.h. */ |
9291a0cd | 5935 | |
3c0aa29a PA |
5936 | bool |
5937 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5938 | { |
976ca316 SM |
5939 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
5940 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 5941 | |
9291a0cd TT |
5942 | /* If we're about to read full symbols, don't bother with the |
5943 | indices. In this case we also don't care if some other debug | |
5944 | format is making psymtabs, because they are all about to be | |
5945 | expanded anyway. */ | |
5946 | if ((objfile->flags & OBJF_READNOW)) | |
5947 | { | |
17ee85fc TT |
5948 | /* When using READNOW, the using_index flag (set below) indicates that |
5949 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
5950 | if (per_bfd->using_index) | |
5951 | { | |
5952 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 5953 | per_objfile->resize_symtabs (); |
17ee85fc TT |
5954 | return true; |
5955 | } | |
5956 | ||
5957 | per_bfd->using_index = 1; | |
976ca316 SM |
5958 | create_all_comp_units (per_objfile); |
5959 | create_all_type_units (per_objfile); | |
17ee85fc TT |
5960 | per_bfd->quick_file_names_table |
5961 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 5962 | per_objfile->resize_symtabs (); |
9291a0cd | 5963 | |
17ee85fc TT |
5964 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
5965 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 5966 | { |
17ee85fc | 5967 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 5968 | |
17ee85fc | 5969 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 5970 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
5971 | } |
5972 | ||
5973 | /* Return 1 so that gdb sees the "quick" functions. However, | |
5974 | these functions will be no-ops because we will have expanded | |
5975 | all symtabs. */ | |
3c0aa29a PA |
5976 | *index_kind = dw_index_kind::GDB_INDEX; |
5977 | return true; | |
9291a0cd TT |
5978 | } |
5979 | ||
17ee85fc TT |
5980 | /* Was a debug names index already read when we processed an objfile sharing |
5981 | PER_BFD? */ | |
5982 | if (per_bfd->debug_names_table != nullptr) | |
5983 | { | |
5984 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
f8c41851 | 5985 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 5986 | per_objfile->resize_symtabs (); |
17ee85fc TT |
5987 | return true; |
5988 | } | |
5989 | ||
5990 | /* Was a GDB index already read when we processed an objfile sharing | |
5991 | PER_BFD? */ | |
5992 | if (per_bfd->index_table != nullptr) | |
5993 | { | |
5994 | *index_kind = dw_index_kind::GDB_INDEX; | |
f8c41851 | 5995 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 5996 | per_objfile->resize_symtabs (); |
17ee85fc TT |
5997 | return true; |
5998 | } | |
5999 | ||
976ca316 | 6000 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a PA |
6001 | { |
6002 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
976ca316 | 6003 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6004 | return true; |
6005 | } | |
927aa2e7 | 6006 | |
976ca316 | 6007 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 6008 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 6009 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
6010 | { |
6011 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6012 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6013 | return true; |
6014 | } | |
9291a0cd | 6015 | |
87d6a7aa | 6016 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 6017 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
6018 | get_gdb_index_contents_from_cache, |
6019 | get_gdb_index_contents_from_cache_dwz)) | |
6020 | { | |
6021 | global_index_cache.hit (); | |
6022 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6023 | per_objfile->resize_symtabs (); |
87d6a7aa SM |
6024 | return true; |
6025 | } | |
6026 | ||
6027 | global_index_cache.miss (); | |
3c0aa29a | 6028 | return false; |
9291a0cd TT |
6029 | } |
6030 | ||
6031 | \f | |
6032 | ||
dce234bc PP |
6033 | /* Build a partial symbol table. */ |
6034 | ||
6035 | void | |
f29dff0a | 6036 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6037 | { |
976ca316 SM |
6038 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6039 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
6040 | |
6041 | if (per_bfd->partial_symtabs != nullptr) | |
6042 | { | |
6043 | /* Partial symbols were already read, so now we can simply | |
6044 | attach them. */ | |
6045 | objfile->partial_symtabs = per_bfd->partial_symtabs; | |
976ca316 | 6046 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6047 | return; |
6048 | } | |
c9bf0622 | 6049 | |
6eee24ce | 6050 | init_psymbol_list (objfile, 1024); |
c906108c | 6051 | |
a70b8144 | 6052 | try |
c9bf0622 TT |
6053 | { |
6054 | /* This isn't really ideal: all the data we allocate on the | |
6055 | objfile's obstack is still uselessly kept around. However, | |
6056 | freeing it seems unsafe. */ | |
906768f9 | 6057 | psymtab_discarder psymtabs (objfile); |
976ca316 | 6058 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 6059 | psymtabs.keep (); |
87d6a7aa | 6060 | |
976ca316 | 6061 | per_objfile->resize_symtabs (); |
af758d11 | 6062 | |
87d6a7aa | 6063 | /* (maybe) store an index in the cache. */ |
976ca316 | 6064 | global_index_cache.store (per_objfile); |
c9bf0622 | 6065 | } |
230d2906 | 6066 | catch (const gdb_exception_error &except) |
492d29ea PA |
6067 | { |
6068 | exception_print (gdb_stderr, except); | |
6069 | } | |
17ee85fc TT |
6070 | |
6071 | /* Finish by setting the local reference to partial symtabs, so that | |
6072 | we don't try to read them again if reading another objfile with the same | |
6073 | BFD. If we can't in fact share, this won't make a difference anyway as | |
6074 | the dwarf2_per_bfd object won't be shared. */ | |
6075 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
c906108c | 6076 | } |
c906108c | 6077 | |
3b80fe9b DE |
6078 | /* Find the base address of the compilation unit for range lists and |
6079 | location lists. It will normally be specified by DW_AT_low_pc. | |
6080 | In DWARF-3 draft 4, the base address could be overridden by | |
6081 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6082 | compilation units with discontinuous ranges. */ | |
6083 | ||
6084 | static void | |
6085 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6086 | { | |
6087 | struct attribute *attr; | |
6088 | ||
2b24b6e4 | 6089 | cu->base_address.reset (); |
3b80fe9b DE |
6090 | |
6091 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6092 | if (attr != nullptr) |
2b24b6e4 | 6093 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6094 | else |
6095 | { | |
6096 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6097 | if (attr != nullptr) |
2b24b6e4 | 6098 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6099 | } |
6100 | } | |
6101 | ||
36586728 TT |
6102 | /* Helper function that returns the proper abbrev section for |
6103 | THIS_CU. */ | |
6104 | ||
6105 | static struct dwarf2_section_info * | |
6106 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6107 | { | |
6108 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6109 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6110 | |
6111 | if (this_cu->is_dwz) | |
c3699833 | 6112 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6113 | else |
c3699833 | 6114 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6115 | |
6116 | return abbrev; | |
6117 | } | |
6118 | ||
f4dc4d17 DE |
6119 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6120 | ||
6121 | static sect_offset | |
976ca316 | 6122 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6123 | struct dwarf2_section_info *section, |
9c541725 | 6124 | sect_offset sect_off) |
f4dc4d17 | 6125 | { |
96b79293 | 6126 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6127 | const gdb_byte *info_ptr; |
ac298888 | 6128 | unsigned int initial_length_size, offset_size; |
43988095 | 6129 | uint16_t version; |
f4dc4d17 | 6130 | |
976ca316 | 6131 | section->read (per_objfile->objfile); |
9c541725 | 6132 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6133 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6134 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6135 | info_ptr += initial_length_size; |
6136 | ||
6137 | version = read_2_bytes (abfd, info_ptr); | |
6138 | info_ptr += 2; | |
6139 | if (version >= 5) | |
6140 | { | |
6141 | /* Skip unit type and address size. */ | |
6142 | info_ptr += 2; | |
6143 | } | |
6144 | ||
24aa364d | 6145 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6146 | } |
6147 | ||
b83470bf TT |
6148 | /* A partial symtab that is used only for include files. */ |
6149 | struct dwarf2_include_psymtab : public partial_symtab | |
6150 | { | |
6151 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6152 | : partial_symtab (filename, objfile) | |
6153 | { | |
6154 | } | |
6155 | ||
6156 | void read_symtab (struct objfile *objfile) override | |
6157 | { | |
194d088f TV |
6158 | /* It's an include file, no symbols to read for it. |
6159 | Everything is in the includer symtab. */ | |
6160 | ||
6161 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6162 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6163 | model the includer. But if we go the regular route of calling | |
6164 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6165 | to expand the includer, we'll only use expand_psymtab on the includer | |
6166 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6167 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6168 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6169 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6170 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6171 | } |
6172 | ||
6173 | void expand_psymtab (struct objfile *objfile) override | |
6174 | { | |
194d088f TV |
6175 | /* This is not called by read_symtab, and should not be called by any |
6176 | expand_dependencies. */ | |
6177 | gdb_assert (false); | |
b83470bf TT |
6178 | } |
6179 | ||
5717c425 | 6180 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6181 | { |
5717c425 | 6182 | return includer ()->readin_p (objfile); |
b83470bf TT |
6183 | } |
6184 | ||
5717c425 | 6185 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6186 | { |
6187 | return nullptr; | |
6188 | } | |
6189 | ||
6190 | private: | |
194d088f TV |
6191 | partial_symtab *includer () const |
6192 | { | |
6193 | /* An include psymtab has exactly one dependency: the psymtab that | |
6194 | includes it. */ | |
6195 | gdb_assert (this->number_of_dependencies == 1); | |
6196 | return this->dependencies[0]; | |
6197 | } | |
b83470bf TT |
6198 | }; |
6199 | ||
aaa75496 JB |
6200 | /* Allocate a new partial symtab for file named NAME and mark this new |
6201 | partial symtab as being an include of PST. */ | |
6202 | ||
6203 | static void | |
891813be | 6204 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6205 | struct objfile *objfile) |
6206 | { | |
b83470bf | 6207 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6208 | |
fbd9ab74 | 6209 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6210 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6211 | |
a9342b62 | 6212 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6213 | subpst->dependencies[0] = pst; |
6214 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6215 | } |
6216 | ||
6217 | /* Read the Line Number Program data and extract the list of files | |
6218 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6219 | partial symtab for each of these included files. */ |
aaa75496 JB |
6220 | |
6221 | static void | |
6222 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6223 | struct die_info *die, |
891813be | 6224 | dwarf2_psymtab *pst) |
aaa75496 | 6225 | { |
fff8551c | 6226 | line_header_up lh; |
d85a05f0 | 6227 | struct attribute *attr; |
aaa75496 | 6228 | |
d85a05f0 | 6229 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6230 | if (attr != nullptr) |
9c541725 | 6231 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6232 | if (lh == NULL) |
6233 | return; /* No linetable, so no includes. */ | |
6234 | ||
79748972 TT |
6235 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6236 | that we pass in the raw text_low here; that is ok because we're | |
6237 | only decoding the line table to make include partial symtabs, and | |
6238 | so the addresses aren't really used. */ | |
4ae976d1 | 6239 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6240 | pst->raw_text_low (), 1); |
aaa75496 JB |
6241 | } |
6242 | ||
348e048f | 6243 | static hashval_t |
52dc124a | 6244 | hash_signatured_type (const void *item) |
348e048f | 6245 | { |
9a3c8263 SM |
6246 | const struct signatured_type *sig_type |
6247 | = (const struct signatured_type *) item; | |
9a619af0 | 6248 | |
348e048f | 6249 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6250 | return sig_type->signature; |
348e048f DE |
6251 | } |
6252 | ||
6253 | static int | |
52dc124a | 6254 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6255 | { |
9a3c8263 SM |
6256 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6257 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6258 | |
348e048f DE |
6259 | return lhs->signature == rhs->signature; |
6260 | } | |
6261 | ||
1fd400ff TT |
6262 | /* Allocate a hash table for signatured types. */ |
6263 | ||
b0b6a987 | 6264 | static htab_up |
298e9637 | 6265 | allocate_signatured_type_table () |
1fd400ff | 6266 | { |
b0b6a987 TT |
6267 | return htab_up (htab_create_alloc (41, |
6268 | hash_signatured_type, | |
6269 | eq_signatured_type, | |
6270 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6271 | } |
6272 | ||
d467dd73 | 6273 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6274 | |
6275 | static int | |
d467dd73 | 6276 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6277 | { |
9a3c8263 | 6278 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6279 | std::vector<signatured_type *> *all_type_units |
6280 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6281 | |
b2bdb8cf | 6282 | all_type_units->push_back (sigt); |
1fd400ff TT |
6283 | |
6284 | return 1; | |
6285 | } | |
6286 | ||
78d4d2c5 | 6287 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6288 | and fill them into TYPES_HTAB. It will process only type units, |
6289 | therefore DW_UT_type. */ | |
c88ee1f0 | 6290 | |
78d4d2c5 | 6291 | static void |
976ca316 | 6292 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6293 | struct dwo_file *dwo_file, |
b0b6a987 | 6294 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6295 | rcuh_kind section_kind) |
348e048f | 6296 | { |
976ca316 | 6297 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6298 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6299 | bfd *abfd; |
6300 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6301 | |
4bdcc0c1 DE |
6302 | abbrev_section = (dwo_file != NULL |
6303 | ? &dwo_file->sections.abbrev | |
976ca316 | 6304 | : &per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6305 | |
b4f54984 | 6306 | if (dwarf_read_debug) |
43988095 | 6307 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6308 | section->get_name (), |
6309 | abbrev_section->get_file_name ()); | |
09406207 | 6310 | |
96b79293 | 6311 | section->read (objfile); |
78d4d2c5 | 6312 | info_ptr = section->buffer; |
348e048f | 6313 | |
78d4d2c5 JK |
6314 | if (info_ptr == NULL) |
6315 | return; | |
348e048f | 6316 | |
78d4d2c5 JK |
6317 | /* We can't set abfd until now because the section may be empty or |
6318 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6319 | abfd = section->get_bfd_owner (); |
348e048f | 6320 | |
c0ab21c2 TT |
6321 | /* We don't use cutu_reader here because we don't need to read |
6322 | any dies: the signature is in the header. */ | |
3019eac3 | 6323 | |
78d4d2c5 JK |
6324 | end_ptr = info_ptr + section->size; |
6325 | while (info_ptr < end_ptr) | |
6326 | { | |
78d4d2c5 JK |
6327 | struct signatured_type *sig_type; |
6328 | struct dwo_unit *dwo_tu; | |
6329 | void **slot; | |
6330 | const gdb_byte *ptr = info_ptr; | |
6331 | struct comp_unit_head header; | |
6332 | unsigned int length; | |
8b70b953 | 6333 | |
9c541725 | 6334 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6335 | |
a49dd8dd JK |
6336 | /* Initialize it due to a false compiler warning. */ |
6337 | header.signature = -1; | |
9c541725 | 6338 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6339 | |
78d4d2c5 JK |
6340 | /* We need to read the type's signature in order to build the hash |
6341 | table, but we don't need anything else just yet. */ | |
348e048f | 6342 | |
976ca316 | 6343 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6344 | abbrev_section, ptr, section_kind); |
348e048f | 6345 | |
4057dfde | 6346 | length = header.get_length (); |
6caca83c | 6347 | |
78d4d2c5 JK |
6348 | /* Skip dummy type units. */ |
6349 | if (ptr >= info_ptr + length | |
43988095 JK |
6350 | || peek_abbrev_code (abfd, ptr) == 0 |
6351 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6352 | { |
6353 | info_ptr += length; | |
6354 | continue; | |
6355 | } | |
dee91e82 | 6356 | |
78d4d2c5 JK |
6357 | if (types_htab == NULL) |
6358 | { | |
6359 | if (dwo_file) | |
298e9637 | 6360 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6361 | else |
298e9637 | 6362 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6363 | } |
8b70b953 | 6364 | |
78d4d2c5 JK |
6365 | if (dwo_file) |
6366 | { | |
6367 | sig_type = NULL; | |
976ca316 | 6368 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
78d4d2c5 | 6369 | dwo_tu->dwo_file = dwo_file; |
43988095 | 6370 | dwo_tu->signature = header.signature; |
9c541725 | 6371 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6372 | dwo_tu->section = section; |
9c541725 | 6373 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6374 | dwo_tu->length = length; |
6375 | } | |
6376 | else | |
6377 | { | |
6378 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6379 | The real type_offset is in the DWO file. */ | |
6380 | dwo_tu = NULL; | |
976ca316 | 6381 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6382 | sig_type->signature = header.signature; |
9c541725 | 6383 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6384 | sig_type->per_cu.is_debug_types = 1; |
6385 | sig_type->per_cu.section = section; | |
9c541725 | 6386 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6387 | sig_type->per_cu.length = length; |
6388 | } | |
6389 | ||
b0b6a987 | 6390 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6391 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6392 | INSERT); | |
6393 | gdb_assert (slot != NULL); | |
6394 | if (*slot != NULL) | |
6395 | { | |
9c541725 | 6396 | sect_offset dup_sect_off; |
0349ea22 | 6397 | |
3019eac3 DE |
6398 | if (dwo_file) |
6399 | { | |
78d4d2c5 JK |
6400 | const struct dwo_unit *dup_tu |
6401 | = (const struct dwo_unit *) *slot; | |
6402 | ||
9c541725 | 6403 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6404 | } |
6405 | else | |
6406 | { | |
78d4d2c5 JK |
6407 | const struct signatured_type *dup_tu |
6408 | = (const struct signatured_type *) *slot; | |
6409 | ||
9c541725 | 6410 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6411 | } |
8b70b953 | 6412 | |
b98664d3 | 6413 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6414 | " the entry at offset %s, signature %s"), |
6415 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6416 | hex_string (header.signature)); |
78d4d2c5 JK |
6417 | } |
6418 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6419 | |
78d4d2c5 | 6420 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6421 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6422 | sect_offset_str (sect_off), | |
43988095 | 6423 | hex_string (header.signature)); |
3019eac3 | 6424 | |
78d4d2c5 JK |
6425 | info_ptr += length; |
6426 | } | |
6427 | } | |
3019eac3 | 6428 | |
78d4d2c5 JK |
6429 | /* Create the hash table of all entries in the .debug_types |
6430 | (or .debug_types.dwo) section(s). | |
6431 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6432 | otherwise it is NULL. | |
b3c8eb43 | 6433 | |
78d4d2c5 | 6434 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6435 | |
78d4d2c5 | 6436 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6437 | |
78d4d2c5 | 6438 | static void |
976ca316 | 6439 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6440 | struct dwo_file *dwo_file, |
fd5866f6 | 6441 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6442 | htab_up &types_htab) |
78d4d2c5 | 6443 | { |
fd5866f6 | 6444 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6445 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6446 | rcuh_kind::TYPE); | |
3019eac3 DE |
6447 | } |
6448 | ||
6449 | /* Create the hash table of all entries in the .debug_types section, | |
6450 | and initialize all_type_units. | |
6451 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6452 | otherwise non-zero. */ | |
6453 | ||
6454 | static int | |
976ca316 | 6455 | create_all_type_units (dwarf2_per_objfile *per_objfile) |
3019eac3 | 6456 | { |
b0b6a987 | 6457 | htab_up types_htab; |
3019eac3 | 6458 | |
976ca316 SM |
6459 | create_debug_type_hash_table (per_objfile, NULL, &per_objfile->per_bfd->info, |
6460 | types_htab, rcuh_kind::COMPILE); | |
6461 | create_debug_types_hash_table (per_objfile, NULL, per_objfile->per_bfd->types, | |
6462 | types_htab); | |
3019eac3 DE |
6463 | if (types_htab == NULL) |
6464 | { | |
976ca316 | 6465 | per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6466 | return 0; |
6467 | } | |
6468 | ||
976ca316 | 6469 | per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6470 | |
976ca316 SM |
6471 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
6472 | per_objfile->per_bfd->all_type_units.reserve | |
6473 | (htab_elements (per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6474 | |
976ca316 | 6475 | htab_traverse_noresize (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6476 | add_signatured_type_cu_to_table, |
976ca316 | 6477 | &per_objfile->per_bfd->all_type_units); |
1fd400ff | 6478 | |
348e048f DE |
6479 | return 1; |
6480 | } | |
6481 | ||
5989a64e | 6482 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6483 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6484 | Otherwise we find one. */ | |
6485 | ||
6486 | static struct signatured_type * | |
976ca316 | 6487 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6488 | { |
976ca316 SM |
6489 | if (per_objfile->per_bfd->all_type_units.size () |
6490 | == per_objfile->per_bfd->all_type_units.capacity ()) | |
6491 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6492 | |
976ca316 | 6493 | signatured_type *sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6494 | |
976ca316 | 6495 | per_objfile->resize_symtabs (); |
af758d11 | 6496 | |
976ca316 | 6497 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6498 | sig_type->signature = sig; |
6499 | sig_type->per_cu.is_debug_types = 1; | |
976ca316 | 6500 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6501 | { |
6502 | sig_type->per_cu.v.quick = | |
976ca316 | 6503 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6504 | struct dwarf2_per_cu_quick_data); |
6505 | } | |
6506 | ||
6507 | if (slot == NULL) | |
6508 | { | |
976ca316 | 6509 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6510 | sig_type, INSERT); |
6511 | } | |
6512 | gdb_assert (*slot == NULL); | |
6513 | *slot = sig_type; | |
6514 | /* The rest of sig_type must be filled in by the caller. */ | |
6515 | return sig_type; | |
6516 | } | |
6517 | ||
a2ce51a0 DE |
6518 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6519 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6520 | ||
6521 | static void | |
976ca316 | 6522 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6523 | struct signatured_type *sig_entry, |
6524 | struct dwo_unit *dwo_entry) | |
6525 | { | |
976ca316 | 6526 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6527 | |
7ee85ab1 | 6528 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6529 | gdb_assert (! sig_entry->per_cu.queued); |
976ca316 | 6530 | gdb_assert (per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6531 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6532 | { |
6533 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
976ca316 | 6534 | gdb_assert (!per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6535 | } |
6536 | else | |
6537 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6538 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6539 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6540 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6541 | gdb_assert (sig_entry->dwo_unit == NULL); |
6542 | ||
6543 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6544 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6545 | sig_entry->per_cu.length = dwo_entry->length; |
6546 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6547 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6548 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6549 | sig_entry->dwo_unit = dwo_entry; | |
6550 | } | |
6551 | ||
6552 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6553 | If we haven't read the TU yet, create the signatured_type data structure |
6554 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6555 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6556 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6557 | containing that CU. Otherwise we could end up reading several other DWO | |
6558 | files (due to comdat folding) to process the transitive closure of all the | |
6559 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6560 | type signature that it needs. | |
a2ce51a0 DE |
6561 | We only do this for .gdb_index because in the psymtab case we already have |
6562 | to read all the DWOs to build the type unit groups. */ | |
6563 | ||
6564 | static struct signatured_type * | |
6565 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6566 | { | |
976ca316 | 6567 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6568 | struct dwo_file *dwo_file; |
6569 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6570 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6571 | void **slot; |
a2ce51a0 | 6572 | |
976ca316 | 6573 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6574 | |
6aa5f3a6 DE |
6575 | /* If TU skeletons have been removed then we may not have read in any |
6576 | TUs yet. */ | |
976ca316 SM |
6577 | if (per_objfile->per_bfd->signatured_types == NULL) |
6578 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6579 | |
6580 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6581 | Use the global signatured_types array to do our own comdat-folding |
6582 | of types. If this is the first time we're reading this TU, and | |
6583 | the TU has an entry in .gdb_index, replace the recorded data from | |
6584 | .gdb_index with this TU. */ | |
a2ce51a0 | 6585 | |
a2ce51a0 | 6586 | find_sig_entry.signature = sig; |
976ca316 | 6587 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6588 | &find_sig_entry, INSERT); |
9a3c8263 | 6589 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6590 | |
6591 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6592 | read. Don't reassign the global entry to point to this DWO if that's |
6593 | the case. Also note that if the TU is already being read, it may not | |
6594 | have come from a DWO, the program may be a mix of Fission-compiled | |
6595 | code and non-Fission-compiled code. */ | |
6596 | ||
6597 | /* Have we already tried to read this TU? | |
6598 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6599 | needn't exist in the global table yet). */ | |
6600 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6601 | return sig_entry; |
6602 | ||
6aa5f3a6 DE |
6603 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6604 | dwo_unit of the TU itself. */ | |
6605 | dwo_file = cu->dwo_unit->dwo_file; | |
6606 | ||
a2ce51a0 DE |
6607 | /* Ok, this is the first time we're reading this TU. */ |
6608 | if (dwo_file->tus == NULL) | |
6609 | return NULL; | |
6610 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6611 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6612 | &find_dwo_entry); | |
a2ce51a0 DE |
6613 | if (dwo_entry == NULL) |
6614 | return NULL; | |
6615 | ||
6aa5f3a6 DE |
6616 | /* If the global table doesn't have an entry for this TU, add one. */ |
6617 | if (sig_entry == NULL) | |
976ca316 | 6618 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6619 | |
976ca316 | 6620 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6621 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6622 | return sig_entry; |
6623 | } | |
6624 | ||
a2ce51a0 DE |
6625 | /* Subroutine of lookup_signatured_type. |
6626 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6627 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6628 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6629 | |
6630 | static struct signatured_type * | |
6631 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6632 | { | |
976ca316 SM |
6633 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6634 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6635 | struct dwo_unit *dwo_entry; |
6636 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6637 | void **slot; |
a2ce51a0 | 6638 | |
976ca316 | 6639 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6640 | gdb_assert (dwp_file != NULL); |
6641 | ||
6aa5f3a6 DE |
6642 | /* If TU skeletons have been removed then we may not have read in any |
6643 | TUs yet. */ | |
976ca316 SM |
6644 | if (per_objfile->per_bfd->signatured_types == NULL) |
6645 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6646 | |
6aa5f3a6 | 6647 | find_sig_entry.signature = sig; |
976ca316 | 6648 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6649 | &find_sig_entry, INSERT); |
9a3c8263 | 6650 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6651 | |
6652 | /* Have we already tried to read this TU? | |
6653 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6654 | needn't exist in the global table yet). */ | |
6655 | if (sig_entry != NULL) | |
6656 | return sig_entry; | |
6657 | ||
a2ce51a0 DE |
6658 | if (dwp_file->tus == NULL) |
6659 | return NULL; | |
976ca316 SM |
6660 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6661 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6662 | if (dwo_entry == NULL) |
6663 | return NULL; | |
6664 | ||
976ca316 SM |
6665 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6666 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6667 | |
a2ce51a0 DE |
6668 | return sig_entry; |
6669 | } | |
6670 | ||
380bca97 | 6671 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6672 | Returns NULL if signature SIG is not present in the table. |
6673 | It is up to the caller to complain about this. */ | |
348e048f DE |
6674 | |
6675 | static struct signatured_type * | |
a2ce51a0 | 6676 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6677 | { |
976ca316 | 6678 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6679 | |
976ca316 | 6680 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6681 | { |
6682 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6683 | These cases require special processing. */ | |
976ca316 | 6684 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6685 | return lookup_dwo_signatured_type (cu, sig); |
6686 | else | |
6687 | return lookup_dwp_signatured_type (cu, sig); | |
6688 | } | |
6689 | else | |
6690 | { | |
6691 | struct signatured_type find_entry, *entry; | |
348e048f | 6692 | |
976ca316 | 6693 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6694 | return NULL; |
6695 | find_entry.signature = sig; | |
9a3c8263 | 6696 | entry = ((struct signatured_type *) |
976ca316 | 6697 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6698 | &find_entry)); |
a2ce51a0 DE |
6699 | return entry; |
6700 | } | |
348e048f | 6701 | } |
18a8505e | 6702 | |
42e7ad6c | 6703 | /* Low level DIE reading support. */ |
348e048f | 6704 | |
d85a05f0 DJ |
6705 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6706 | ||
6707 | static void | |
6708 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6709 | struct dwarf2_cu *cu, |
3019eac3 | 6710 | struct dwarf2_section_info *section, |
685af9cd TT |
6711 | struct dwo_file *dwo_file, |
6712 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6713 | { |
fceca515 | 6714 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6715 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6716 | reader->cu = cu; |
3019eac3 | 6717 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6718 | reader->die_section = section; |
6719 | reader->buffer = section->buffer; | |
f664829e | 6720 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6721 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6722 | } |
6723 | ||
c0ab21c2 | 6724 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6725 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6726 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6727 | already. |
6728 | ||
6729 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6730 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6731 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6732 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6733 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6734 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6735 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6736 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6737 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6738 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6739 | kept around for at least as long as *RESULT_READER. | |
6740 | ||
b0c7bfa9 DE |
6741 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6742 | ||
6743 | static int | |
4ab09049 | 6744 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6745 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6746 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6747 | const char *stub_comp_dir, |
b0c7bfa9 | 6748 | struct die_reader_specs *result_reader, |
d521ce57 | 6749 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6750 | struct die_info **result_comp_unit_die, |
685af9cd | 6751 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6752 | { |
976ca316 | 6753 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6754 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6755 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6756 | bfd *abfd; |
d521ce57 | 6757 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6758 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6759 | int i,num_extra_attrs; | |
6760 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6761 | struct die_info *comp_unit_die; |
6762 | ||
b0aeadb3 DE |
6763 | /* At most one of these may be provided. */ |
6764 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6765 | |
b0c7bfa9 DE |
6766 | /* These attributes aren't processed until later: |
6767 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6768 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6769 | referenced later. However, these attributes are found in the stub | |
6770 | which we won't have later. In order to not impose this complication | |
6771 | on the rest of the code, we read them here and copy them to the | |
6772 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6773 | |
6774 | stmt_list = NULL; | |
6775 | low_pc = NULL; | |
6776 | high_pc = NULL; | |
6777 | ranges = NULL; | |
6778 | comp_dir = NULL; | |
6779 | ||
6780 | if (stub_comp_unit_die != NULL) | |
6781 | { | |
6782 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6783 | DWO file. */ | |
4ab09049 | 6784 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6785 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6786 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6787 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6788 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6789 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6790 | ||
a39fdb41 | 6791 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6792 | |
18a8505e AT |
6793 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6794 | here (if needed). We need the value before we can process | |
6795 | DW_AT_ranges. */ | |
a39fdb41 | 6796 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6797 | } |
a2ce51a0 DE |
6798 | else if (stub_comp_dir != NULL) |
6799 | { | |
6800 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6801 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6802 | comp_dir->name = DW_AT_comp_dir; |
6803 | comp_dir->form = DW_FORM_string; | |
6804 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6805 | DW_STRING (comp_dir) = stub_comp_dir; | |
6806 | } | |
b0c7bfa9 DE |
6807 | |
6808 | /* Set up for reading the DWO CU/TU. */ | |
6809 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6810 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6811 | section->read (objfile); |
6812 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6813 | begin_info_ptr = info_ptr = (section->buffer |
6814 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6815 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6816 | |
4ab09049 | 6817 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6818 | { |
4ab09049 | 6819 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6820 | |
976ca316 SM |
6821 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6822 | section, dwo_abbrev_section, | |
43988095 | 6823 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6824 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6825 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6826 | { |
6827 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6828 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6829 | hex_string (sig_type->signature), |
43988095 | 6830 | hex_string (cu->header.signature), |
9d8780f0 | 6831 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6832 | bfd_get_filename (abfd)); |
6833 | } | |
9c541725 | 6834 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6835 | /* For DWOs coming from DWP files, we don't know the CU length |
6836 | nor the type's offset in the TU until now. */ | |
4057dfde | 6837 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6838 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6839 | |
6840 | /* Establish the type offset that can be used to lookup the type. | |
6841 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6842 | sig_type->type_offset_in_section |
6843 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6844 | } |
6845 | else | |
6846 | { | |
976ca316 SM |
6847 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6848 | section, dwo_abbrev_section, | |
43988095 | 6849 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6850 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6851 | /* For DWOs coming from DWP files, we don't know the CU length |
6852 | until now. */ | |
4057dfde | 6853 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6854 | } |
6855 | ||
685af9cd | 6856 | *result_dwo_abbrev_table |
86de1d91 TT |
6857 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6858 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6859 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6860 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6861 | |
6862 | /* Read in the die, but leave space to copy over the attributes | |
6863 | from the stub. This has the benefit of simplifying the rest of | |
6864 | the code - all the work to maintain the illusion of a single | |
6865 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6866 | num_extra_attrs = ((stmt_list != NULL) | |
6867 | + (low_pc != NULL) | |
6868 | + (high_pc != NULL) | |
6869 | + (ranges != NULL) | |
6870 | + (comp_dir != NULL)); | |
6871 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6872 | num_extra_attrs); |
b0c7bfa9 DE |
6873 | |
6874 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6875 | comp_unit_die = *result_comp_unit_die; | |
6876 | i = comp_unit_die->num_attrs; | |
6877 | if (stmt_list != NULL) | |
6878 | comp_unit_die->attrs[i++] = *stmt_list; | |
6879 | if (low_pc != NULL) | |
6880 | comp_unit_die->attrs[i++] = *low_pc; | |
6881 | if (high_pc != NULL) | |
6882 | comp_unit_die->attrs[i++] = *high_pc; | |
6883 | if (ranges != NULL) | |
6884 | comp_unit_die->attrs[i++] = *ranges; | |
6885 | if (comp_dir != NULL) | |
6886 | comp_unit_die->attrs[i++] = *comp_dir; | |
6887 | comp_unit_die->num_attrs += num_extra_attrs; | |
6888 | ||
b4f54984 | 6889 | if (dwarf_die_debug) |
bf6af496 DE |
6890 | { |
6891 | fprintf_unfiltered (gdb_stdlog, | |
6892 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6893 | section->get_name (), |
bf6af496 DE |
6894 | (unsigned) (begin_info_ptr - section->buffer), |
6895 | bfd_get_filename (abfd)); | |
b4f54984 | 6896 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6897 | } |
6898 | ||
b0c7bfa9 DE |
6899 | /* Skip dummy compilation units. */ |
6900 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6901 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6902 | return 0; | |
6903 | ||
6904 | *result_info_ptr = info_ptr; | |
6905 | return 1; | |
6906 | } | |
6907 | ||
a084a2a6 AT |
6908 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6909 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6910 | signature is part of the header. */ | |
6911 | static gdb::optional<ULONGEST> | |
6912 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6913 | { | |
6914 | if (cu->header.version >= 5) | |
6915 | return cu->header.signature; | |
6916 | struct attribute *attr; | |
6917 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6918 | if (attr == nullptr) | |
6919 | return gdb::optional<ULONGEST> (); | |
6920 | return DW_UNSND (attr); | |
6921 | } | |
6922 | ||
c0ab21c2 | 6923 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6924 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6925 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6926 | |
6927 | static struct dwo_unit * | |
4ab09049 | 6928 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 6929 | { |
4ab09049 | 6930 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 6931 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6932 | const char *comp_dir; |
b0c7bfa9 | 6933 | |
a2ce51a0 DE |
6934 | gdb_assert (cu != NULL); |
6935 | ||
b0c7bfa9 | 6936 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6937 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6938 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 6939 | |
4ab09049 SM |
6940 | if (per_cu->is_debug_types) |
6941 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
6942 | else |
6943 | { | |
a084a2a6 | 6944 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 6945 | |
a084a2a6 | 6946 | if (!signature.has_value ()) |
b0c7bfa9 DE |
6947 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6948 | " [in module %s]"), | |
4ab09049 SM |
6949 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
6950 | ||
6951 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
6952 | } |
6953 | ||
b0c7bfa9 DE |
6954 | return dwo_unit; |
6955 | } | |
6956 | ||
c0ab21c2 | 6957 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6958 | See it for a description of the parameters. |
fcd3b13d | 6959 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6960 | |
c0ab21c2 | 6961 | void |
9e021579 SM |
6962 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
6963 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 6964 | dwarf2_cu *existing_cu) |
a2ce51a0 | 6965 | { |
a2ce51a0 | 6966 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6967 | |
6968 | /* Verify we can do the following downcast, and that we have the | |
6969 | data we need. */ | |
6970 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6971 | sig_type = (struct signatured_type *) this_cu; | |
6972 | gdb_assert (sig_type->dwo_unit != NULL); | |
6973 | ||
2e671100 SM |
6974 | dwarf2_cu *cu; |
6975 | ||
6976 | if (existing_cu != nullptr) | |
6aa5f3a6 | 6977 | { |
2e671100 SM |
6978 | cu = existing_cu; |
6979 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6980 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6981 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6982 | } |
6983 | else | |
6984 | { | |
7188ed02 SM |
6985 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
6986 | in per_objfile yet. */ | |
6987 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); | |
9e021579 | 6988 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 6989 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
6990 | } |
6991 | ||
6992 | /* A future optimization, if needed, would be to use an existing | |
6993 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6994 | could share abbrev tables. */ | |
a2ce51a0 | 6995 | |
2e671100 | 6996 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
6997 | NULL /* stub_comp_unit_die */, |
6998 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 6999 | this, &info_ptr, |
3e225074 | 7000 | &comp_unit_die, |
c0ab21c2 | 7001 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7002 | { |
7003 | /* Dummy die. */ | |
c0ab21c2 | 7004 | dummy_p = true; |
a2ce51a0 | 7005 | } |
a2ce51a0 DE |
7006 | } |
7007 | ||
fd820528 | 7008 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7009 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7010 | |
f4dc4d17 DE |
7011 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7012 | Otherwise the table specified in the comp unit header is read in and used. | |
7013 | This is an optimization for when we already have the abbrev table. | |
7014 | ||
2e671100 SM |
7015 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
7016 | allocated. */ | |
aaa75496 | 7017 | |
ab432490 | 7018 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7019 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 7020 | struct abbrev_table *abbrev_table, |
2e671100 | 7021 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
7022 | bool skip_partial) |
7023 | : die_reader_specs {}, | |
6751ebae | 7024 | m_this_cu (this_cu) |
c906108c | 7025 | { |
976ca316 | 7026 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7027 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7028 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 7029 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7030 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7031 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7032 | /* Non-zero if CU currently points to a DWO file and we need to |
7033 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7034 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7035 | int rereading_dwo_cu = 0; |
c906108c | 7036 | |
b4f54984 | 7037 | if (dwarf_die_debug) |
9d8780f0 | 7038 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7039 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7040 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7041 | |
a2ce51a0 DE |
7042 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7043 | file (instead of going through the stub), short-circuit all of this. */ | |
7044 | if (this_cu->reading_dwo_directly) | |
7045 | { | |
7046 | /* Narrow down the scope of possibilities to have to understand. */ | |
7047 | gdb_assert (this_cu->is_debug_types); | |
7048 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 7049 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
7050 | return; |
7051 | } | |
7052 | ||
dee91e82 | 7053 | /* This is cheap if the section is already read in. */ |
96b79293 | 7054 | section->read (objfile); |
dee91e82 | 7055 | |
9c541725 | 7056 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7057 | |
7058 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7059 | |
2e671100 SM |
7060 | dwarf2_cu *cu; |
7061 | ||
7062 | if (existing_cu != nullptr) | |
dee91e82 | 7063 | { |
2e671100 | 7064 | cu = existing_cu; |
42e7ad6c DE |
7065 | /* If this CU is from a DWO file we need to start over, we need to |
7066 | refetch the attributes from the skeleton CU. | |
7067 | This could be optimized by retrieving those attributes from when we | |
7068 | were here the first time: the previous comp_unit_die was stored in | |
7069 | comp_unit_obstack. But there's no data yet that we need this | |
7070 | optimization. */ | |
7071 | if (cu->dwo_unit != NULL) | |
7072 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7073 | } |
7074 | else | |
7075 | { | |
7188ed02 SM |
7076 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
7077 | in per_objfile yet. */ | |
976ca316 SM |
7078 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
7079 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 7080 | cu = m_new_cu.get (); |
42e7ad6c | 7081 | } |
dee91e82 | 7082 | |
b0c7bfa9 | 7083 | /* Get the header. */ |
9c541725 | 7084 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7085 | { |
7086 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7087 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7088 | } |
7089 | else | |
7090 | { | |
3019eac3 | 7091 | if (this_cu->is_debug_types) |
dee91e82 | 7092 | { |
976ca316 SM |
7093 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7094 | section, abbrev_section, | |
7095 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 7096 | |
42e7ad6c DE |
7097 | /* Since per_cu is the first member of struct signatured_type, |
7098 | we can go from a pointer to one to a pointer to the other. */ | |
7099 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7100 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7101 | gdb_assert (sig_type->type_offset_in_tu |
7102 | == cu->header.type_cu_offset_in_tu); | |
7103 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7104 | |
42e7ad6c DE |
7105 | /* LENGTH has not been set yet for type units if we're |
7106 | using .gdb_index. */ | |
4057dfde | 7107 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7108 | |
7109 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7110 | sig_type->type_offset_in_section = |
7111 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7112 | |
7113 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7114 | } |
7115 | else | |
7116 | { | |
976ca316 SM |
7117 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7118 | section, abbrev_section, | |
43988095 JK |
7119 | info_ptr, |
7120 | rcuh_kind::COMPILE); | |
dee91e82 | 7121 | |
9c541725 | 7122 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7123 | if (this_cu->length == 0) |
7124 | this_cu->length = cu->header.get_length (); | |
7125 | else | |
7126 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7127 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7128 | } |
7129 | } | |
10b3939b | 7130 | |
6caca83c | 7131 | /* Skip dummy compilation units. */ |
dee91e82 | 7132 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7133 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7134 | { |
7135 | dummy_p = true; | |
7136 | return; | |
7137 | } | |
6caca83c | 7138 | |
433df2d4 DE |
7139 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7140 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7141 | done. */ |
f4dc4d17 | 7142 | if (abbrev_table != NULL) |
685af9cd TT |
7143 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7144 | else | |
f4dc4d17 | 7145 | { |
c0ab21c2 | 7146 | m_abbrev_table_holder |
86de1d91 TT |
7147 | = abbrev_table::read (objfile, abbrev_section, |
7148 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 7149 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7150 | } |
af703f96 | 7151 | |
dee91e82 | 7152 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7153 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7154 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7155 | |
58f0c718 | 7156 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7157 | { |
7158 | dummy_p = true; | |
7159 | return; | |
7160 | } | |
58f0c718 | 7161 | |
b0c7bfa9 | 7162 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7163 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7164 | table from the DWO file and pass the ownership over to us. It will be | |
7165 | referenced from READER, so we must make sure to free it after we're done | |
7166 | with READER. | |
7167 | ||
b0c7bfa9 DE |
7168 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7169 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7170 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7171 | if (dwo_name != nullptr) |
3019eac3 | 7172 | { |
3019eac3 | 7173 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7174 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7175 | |
3e225074 | 7176 | if (comp_unit_die->has_children) |
6a506a2d | 7177 | { |
b98664d3 | 7178 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7179 | " has children (offset %s) [in module %s]"), |
7180 | sect_offset_str (this_cu->sect_off), | |
7181 | bfd_get_filename (abfd)); | |
6a506a2d | 7182 | } |
4ab09049 | 7183 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7184 | if (dwo_unit != NULL) |
3019eac3 | 7185 | { |
4ab09049 | 7186 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7187 | comp_unit_die, NULL, |
c0ab21c2 | 7188 | this, &info_ptr, |
3e225074 | 7189 | &dwo_comp_unit_die, |
c0ab21c2 | 7190 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7191 | { |
7192 | /* Dummy die. */ | |
c0ab21c2 | 7193 | dummy_p = true; |
6a506a2d DE |
7194 | return; |
7195 | } | |
7196 | comp_unit_die = dwo_comp_unit_die; | |
7197 | } | |
7198 | else | |
7199 | { | |
7200 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7201 | the stub. A complaint has already been logged. There's | |
7202 | not much more we can do except pass on the stub DIE to | |
7203 | die_reader_func. We don't want to throw an error on bad | |
7204 | debug info. */ | |
3019eac3 DE |
7205 | } |
7206 | } | |
c0ab21c2 | 7207 | } |
3019eac3 | 7208 | |
6751ebae TT |
7209 | void |
7210 | cutu_reader::keep () | |
c0ab21c2 | 7211 | { |
b0c7bfa9 | 7212 | /* Done, clean up. */ |
6751ebae TT |
7213 | gdb_assert (!dummy_p); |
7214 | if (m_new_cu != NULL) | |
348e048f | 7215 | { |
7188ed02 SM |
7216 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
7217 | now. */ | |
7218 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; | |
7219 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7220 | } |
dee91e82 DE |
7221 | } |
7222 | ||
18a8505e AT |
7223 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7224 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7225 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7226 | |
7227 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7228 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7229 | |
7230 | We fill in THIS_CU->length. | |
7231 | ||
dee91e82 | 7232 | THIS_CU->cu is always freed when done. |
3019eac3 | 7233 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7234 | to care whether it refers to the "main" CU or the DWO CU. |
7235 | ||
7236 | When parent_cu is passed, it is used to provide a default value for | |
7237 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7238 | |
ab432490 | 7239 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7240 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
7241 | struct dwarf2_cu *parent_cu, |
7242 | struct dwo_file *dwo_file) | |
7243 | : die_reader_specs {}, | |
7244 | m_this_cu (this_cu) | |
dee91e82 | 7245 | { |
976ca316 | 7246 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7247 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7248 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7249 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7250 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7251 | |
b4f54984 | 7252 | if (dwarf_die_debug) |
9d8780f0 | 7253 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7254 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7255 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7256 | |
976ca316 | 7257 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7258 | |
33e80786 DE |
7259 | abbrev_section = (dwo_file != NULL |
7260 | ? &dwo_file->sections.abbrev | |
7261 | : get_abbrev_section_for_cu (this_cu)); | |
7262 | ||
dee91e82 | 7263 | /* This is cheap if the section is already read in. */ |
96b79293 | 7264 | section->read (objfile); |
dee91e82 | 7265 | |
976ca316 | 7266 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 7267 | |
9c541725 | 7268 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
7269 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
7270 | section, abbrev_section, info_ptr, | |
43988095 JK |
7271 | (this_cu->is_debug_types |
7272 | ? rcuh_kind::TYPE | |
7273 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7274 | |
18a8505e AT |
7275 | if (parent_cu != nullptr) |
7276 | { | |
c0ab21c2 TT |
7277 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7278 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7279 | } |
4057dfde | 7280 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7281 | |
7282 | /* Skip dummy compilation units. */ | |
7283 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7284 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7285 | { |
7286 | dummy_p = true; | |
7287 | return; | |
7288 | } | |
72bf9492 | 7289 | |
c0ab21c2 | 7290 | m_abbrev_table_holder |
86de1d91 TT |
7291 | = abbrev_table::read (objfile, abbrev_section, |
7292 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 7293 | |
c0ab21c2 TT |
7294 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7295 | m_abbrev_table_holder.get ()); | |
3e225074 | 7296 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7297 | } |
7298 | ||
0018ea6f DE |
7299 | \f |
7300 | /* Type Unit Groups. | |
dee91e82 | 7301 | |
0018ea6f DE |
7302 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7303 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7304 | so that all types coming from the same compilation (.o file) are grouped | |
7305 | together. A future step could be to put the types in the same symtab as | |
7306 | the CU the types ultimately came from. */ | |
ff013f42 | 7307 | |
f4dc4d17 DE |
7308 | static hashval_t |
7309 | hash_type_unit_group (const void *item) | |
7310 | { | |
9a3c8263 SM |
7311 | const struct type_unit_group *tu_group |
7312 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7313 | |
094b34ac | 7314 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7315 | } |
348e048f DE |
7316 | |
7317 | static int | |
f4dc4d17 | 7318 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7319 | { |
9a3c8263 SM |
7320 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7321 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7322 | |
094b34ac | 7323 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7324 | } |
348e048f | 7325 | |
f4dc4d17 DE |
7326 | /* Allocate a hash table for type unit groups. */ |
7327 | ||
eaa5fa8b | 7328 | static htab_up |
298e9637 | 7329 | allocate_type_unit_groups_table () |
f4dc4d17 | 7330 | { |
eaa5fa8b TT |
7331 | return htab_up (htab_create_alloc (3, |
7332 | hash_type_unit_group, | |
7333 | eq_type_unit_group, | |
7334 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7335 | } |
dee91e82 | 7336 | |
f4dc4d17 DE |
7337 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7338 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7339 | of any one psymtab grow too big. */ | |
7340 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7341 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7342 | |
094b34ac | 7343 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7344 | Create the type_unit_group object used to hold one or more TUs. */ |
7345 | ||
7346 | static struct type_unit_group * | |
094b34ac | 7347 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7348 | { |
976ca316 SM |
7349 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7350 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
094b34ac | 7351 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7352 | struct type_unit_group *tu_group; |
f4dc4d17 | 7353 | |
976ca316 | 7354 | tu_group = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, type_unit_group); |
094b34ac | 7355 | per_cu = &tu_group->per_cu; |
1859c670 | 7356 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7357 | |
1859c670 | 7358 | if (per_bfd->using_index) |
094b34ac | 7359 | { |
1859c670 | 7360 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7361 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7362 | } |
7363 | else | |
7364 | { | |
9c541725 | 7365 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7366 | dwarf2_psymtab *pst; |
528e1572 | 7367 | std::string name; |
094b34ac DE |
7368 | |
7369 | /* Give the symtab a useful name for debug purposes. */ | |
7370 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7371 | name = string_printf ("<type_units_%d>", |
7372 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7373 | else |
528e1572 | 7374 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7375 | |
976ca316 | 7376 | pst = create_partial_symtab (per_cu, per_objfile, name.c_str ()); |
6d94535f | 7377 | pst->anonymous = true; |
094b34ac | 7378 | } |
f4dc4d17 | 7379 | |
094b34ac | 7380 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7381 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7382 | |
7383 | return tu_group; | |
7384 | } | |
7385 | ||
094b34ac DE |
7386 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7387 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7388 | |
7389 | static struct type_unit_group * | |
ff39bb5e | 7390 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7391 | { |
976ca316 SM |
7392 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7393 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7394 | struct type_unit_group *tu_group; |
7395 | void **slot; | |
7396 | unsigned int line_offset; | |
7397 | struct type_unit_group type_unit_group_for_lookup; | |
7398 | ||
976ca316 SM |
7399 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7400 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7401 | |
7402 | /* Do we need to create a new group, or can we use an existing one? */ | |
7403 | ||
7404 | if (stmt_list) | |
7405 | { | |
7406 | line_offset = DW_UNSND (stmt_list); | |
7407 | ++tu_stats->nr_symtab_sharers; | |
7408 | } | |
7409 | else | |
7410 | { | |
7411 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7412 | We can do various things here like create one group per TU or | |
7413 | spread them over multiple groups to split up the expansion work. | |
7414 | To avoid worst case scenarios (too many groups or too large groups) | |
7415 | we, umm, group them in bunches. */ | |
7416 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7417 | | (tu_stats->nr_stmt_less_type_units | |
7418 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7419 | ++tu_stats->nr_stmt_less_type_units; | |
7420 | } | |
7421 | ||
094b34ac | 7422 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7423 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7424 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7425 | &type_unit_group_for_lookup, INSERT); |
7426 | if (*slot != NULL) | |
7427 | { | |
9a3c8263 | 7428 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7429 | gdb_assert (tu_group != NULL); |
7430 | } | |
7431 | else | |
7432 | { | |
9c541725 | 7433 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7434 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7435 | *slot = tu_group; |
7436 | ++tu_stats->nr_symtabs; | |
7437 | } | |
7438 | ||
7439 | return tu_group; | |
7440 | } | |
0018ea6f DE |
7441 | \f |
7442 | /* Partial symbol tables. */ | |
7443 | ||
7444 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7445 | ||
7446 | The caller must fill in the following details: | |
7447 | dirname, textlow, texthigh. */ | |
7448 | ||
891813be | 7449 | static dwarf2_psymtab * |
7aa104c4 SM |
7450 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7451 | dwarf2_per_objfile *per_objfile, | |
7452 | const char *name) | |
0018ea6f | 7453 | { |
7aa104c4 | 7454 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7455 | dwarf2_psymtab *pst; |
0018ea6f | 7456 | |
9f4e76a4 | 7457 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7458 | |
6d94535f | 7459 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7460 | |
7461 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7462 | per_cu->v.psymtab = pst; |
7463 | ||
7464 | return pst; | |
7465 | } | |
7466 | ||
c0ab21c2 | 7467 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7468 | |
7469 | static void | |
7470 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7471 | const gdb_byte *info_ptr, |
0018ea6f | 7472 | struct die_info *comp_unit_die, |
c0ab21c2 | 7473 | enum language pretend_language) |
0018ea6f DE |
7474 | { |
7475 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7476 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7477 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7478 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7479 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7480 | CORE_ADDR baseaddr; |
7481 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7482 | dwarf2_psymtab *pst; |
3a2b436a | 7483 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7484 | const char *filename; |
0018ea6f | 7485 | |
0018ea6f DE |
7486 | gdb_assert (! per_cu->is_debug_types); |
7487 | ||
c0ab21c2 | 7488 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7489 | |
0018ea6f | 7490 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7491 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7492 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7493 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7494 | if (filename == NULL) | |
0018ea6f | 7495 | filename = ""; |
2e927613 TV |
7496 | else if (strcmp (filename, artificial) == 0) |
7497 | { | |
7498 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7499 | sect_offset_str (per_cu->sect_off), |
7500 | (char *) NULL)); | |
2e927613 TV |
7501 | filename = debug_filename.get (); |
7502 | } | |
0018ea6f | 7503 | |
7aa104c4 | 7504 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7505 | |
7506 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7507 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7508 | |
b3b3bada | 7509 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7510 | |
7511 | dwarf2_find_base_address (comp_unit_die, cu); | |
7512 | ||
7513 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7514 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7515 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7516 | &best_highpc, cu, pst); | |
7517 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7518 | { |
7519 | CORE_ADDR low | |
7520 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7521 | - baseaddr); | |
7522 | CORE_ADDR high | |
7523 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7524 | - baseaddr - 1); | |
7525 | /* Store the contiguous range if it is not empty; it can be | |
7526 | empty for CUs with no code. */ | |
d320c2b5 TT |
7527 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7528 | low, high, pst); | |
79748972 | 7529 | } |
0018ea6f DE |
7530 | |
7531 | /* Check if comp unit has_children. | |
7532 | If so, read the rest of the partial symbols from this comp unit. | |
7533 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7534 | if (comp_unit_die->has_children) |
0018ea6f DE |
7535 | { |
7536 | struct partial_die_info *first_die; | |
7537 | CORE_ADDR lowpc, highpc; | |
7538 | ||
7539 | lowpc = ((CORE_ADDR) -1); | |
7540 | highpc = ((CORE_ADDR) 0); | |
7541 | ||
7542 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7543 | ||
7544 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7545 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7546 | |
7547 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7548 | complaints from `maint check'. */ | |
7549 | if (lowpc == ((CORE_ADDR) -1)) | |
7550 | lowpc = highpc; | |
7551 | ||
7552 | /* If the compilation unit didn't have an explicit address range, | |
7553 | then use the information extracted from its child dies. */ | |
e385593e | 7554 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7555 | { |
7556 | best_lowpc = lowpc; | |
7557 | best_highpc = highpc; | |
7558 | } | |
7559 | } | |
4ae976d1 | 7560 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7561 | best_lowpc + baseaddr) |
7562 | - baseaddr); | |
4ae976d1 | 7563 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7564 | best_highpc + baseaddr) |
7565 | - baseaddr); | |
0018ea6f | 7566 | |
8763cede | 7567 | end_psymtab_common (objfile, pst); |
0018ea6f | 7568 | |
ae640021 | 7569 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7570 | { |
7571 | int i; | |
ae640021 | 7572 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7573 | |
7574 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7575 | post-pass. */ | |
7576 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7577 | pst->dependencies |
7578 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7579 | for (i = 0; i < len; ++i) |
7580 | { | |
7581 | pst->dependencies[i] | |
7582 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7583 | } | |
0018ea6f | 7584 | |
ae640021 | 7585 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7586 | } |
7587 | ||
7588 | /* Get the list of files included in the current compilation unit, | |
7589 | and build a psymtab for each of them. */ | |
7590 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7591 | ||
b4f54984 | 7592 | if (dwarf_read_debug) |
b926417a TT |
7593 | fprintf_unfiltered (gdb_stdlog, |
7594 | "Psymtab for %s unit @%s: %s - %s" | |
7595 | ", %d global, %d static syms\n", | |
7596 | per_cu->is_debug_types ? "type" : "comp", | |
7597 | sect_offset_str (per_cu->sect_off), | |
7598 | paddress (gdbarch, pst->text_low (objfile)), | |
7599 | paddress (gdbarch, pst->text_high (objfile)), | |
7600 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7601 | } |
7602 | ||
7603 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7604 | Process compilation unit THIS_CU for a psymtab. */ | |
7605 | ||
7606 | static void | |
ab432490 SM |
7607 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7608 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7609 | bool want_partial_unit, |
b93601f3 | 7610 | enum language pretend_language) |
0018ea6f DE |
7611 | { |
7612 | /* If this compilation unit was already read in, free the | |
7613 | cached copy in order to read it in again. This is | |
7614 | necessary because we skipped some symbols when we first | |
7615 | read in the compilation unit (see load_partial_dies). | |
7616 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7617 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7618 | |
2e671100 | 7619 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7620 | |
58990295 TV |
7621 | switch (reader.comp_unit_die->tag) |
7622 | { | |
7623 | case DW_TAG_compile_unit: | |
7624 | this_cu->unit_type = DW_UT_compile; | |
7625 | break; | |
7626 | case DW_TAG_partial_unit: | |
7627 | this_cu->unit_type = DW_UT_partial; | |
7628 | break; | |
7629 | default: | |
7630 | abort (); | |
7631 | } | |
7632 | ||
c0ab21c2 | 7633 | if (reader.dummy_p) |
f1902523 | 7634 | { |
c0ab21c2 | 7635 | /* Nothing. */ |
f1902523 | 7636 | } |
c0ab21c2 | 7637 | else if (this_cu->is_debug_types) |
3e225074 TT |
7638 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7639 | reader.comp_unit_die); | |
135f5437 TT |
7640 | else if (want_partial_unit |
7641 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7642 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7643 | reader.comp_unit_die, | |
c0ab21c2 | 7644 | pretend_language); |
0018ea6f | 7645 | |
7188ed02 | 7646 | this_cu->lang = reader.cu->language; |
58990295 | 7647 | |
0018ea6f | 7648 | /* Age out any secondary CUs. */ |
7188ed02 | 7649 | per_objfile->age_comp_units (); |
0018ea6f | 7650 | } |
f4dc4d17 DE |
7651 | |
7652 | /* Reader function for build_type_psymtabs. */ | |
7653 | ||
7654 | static void | |
7655 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7656 | const gdb_byte *info_ptr, |
3e225074 | 7657 | struct die_info *type_unit_die) |
f4dc4d17 | 7658 | { |
976ca316 SM |
7659 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
7660 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 DE |
7661 | struct dwarf2_cu *cu = reader->cu; |
7662 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7663 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7664 | struct type_unit_group *tu_group; |
7665 | struct attribute *attr; | |
7666 | struct partial_die_info *first_die; | |
7667 | CORE_ADDR lowpc, highpc; | |
891813be | 7668 | dwarf2_psymtab *pst; |
f4dc4d17 | 7669 | |
0186c6a7 DE |
7670 | gdb_assert (per_cu->is_debug_types); |
7671 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7672 | |
3e225074 | 7673 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7674 | return; |
7675 | ||
052c8bb8 | 7676 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7677 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7678 | |
df07e2c7 | 7679 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7680 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7681 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7682 | |
7683 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7684 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7685 | pst->anonymous = true; |
f4dc4d17 DE |
7686 | |
7687 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7688 | ||
7689 | lowpc = (CORE_ADDR) -1; | |
7690 | highpc = (CORE_ADDR) 0; | |
7691 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7692 | ||
8763cede | 7693 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7694 | } |
7695 | ||
73051182 DE |
7696 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7697 | ||
7698 | struct tu_abbrev_offset | |
7699 | { | |
b2bdb8cf SM |
7700 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7701 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7702 | {} | |
7703 | ||
7704 | signatured_type *sig_type; | |
73051182 DE |
7705 | sect_offset abbrev_offset; |
7706 | }; | |
7707 | ||
484cf504 | 7708 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7709 | |
484cf504 TT |
7710 | static bool |
7711 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7712 | const struct tu_abbrev_offset &b) | |
73051182 | 7713 | { |
484cf504 | 7714 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7715 | } |
7716 | ||
7717 | /* Efficiently read all the type units. | |
7718 | This does the bulk of the work for build_type_psymtabs. | |
7719 | ||
7720 | The efficiency is because we sort TUs by the abbrev table they use and | |
7721 | only read each abbrev table once. In one program there are 200K TUs | |
7722 | sharing 8K abbrev tables. | |
7723 | ||
7724 | The main purpose of this function is to support building the | |
5989a64e | 7725 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7726 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7727 | can collapse the search space by grouping them by stmt_list. | |
7728 | The savings can be significant, in the same program from above the 200K TUs | |
7729 | share 8K stmt_list tables. | |
7730 | ||
7731 | FUNC is expected to call get_type_unit_group, which will create the | |
7732 | struct type_unit_group if necessary and add it to | |
5989a64e | 7733 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7734 | |
7735 | static void | |
976ca316 | 7736 | build_type_psymtabs_1 (dwarf2_per_objfile *per_objfile) |
73051182 | 7737 | { |
976ca316 | 7738 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7739 | abbrev_table_up abbrev_table; |
73051182 | 7740 | sect_offset abbrev_offset; |
73051182 DE |
7741 | |
7742 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7743 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7744 | |
976ca316 | 7745 | if (per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7746 | return; |
7747 | ||
7748 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7749 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7750 | read each abbrev table in. | |
7751 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7752 | This is simpler and efficient enough for now. | |
7753 | ||
7754 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7755 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7756 | stmt_list value too so in practice this should work well. | |
7757 | ||
7758 | The basic algorithm here is: | |
7759 | ||
7760 | sort TUs by abbrev table | |
7761 | for each TU with same abbrev table: | |
7762 | read abbrev table if first user | |
7763 | read TU top level DIE | |
7764 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7765 | call FUNC */ | |
7766 | ||
b4f54984 | 7767 | if (dwarf_read_debug) |
73051182 DE |
7768 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7769 | ||
7770 | /* Sort in a separate table to maintain the order of all_type_units | |
7771 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7772 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
976ca316 | 7773 | sorted_by_abbrev.reserve (per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7774 | |
976ca316 | 7775 | for (signatured_type *sig_type : per_objfile->per_bfd->all_type_units) |
b2bdb8cf | 7776 | sorted_by_abbrev.emplace_back |
976ca316 | 7777 | (sig_type, read_abbrev_offset (per_objfile, sig_type->per_cu.section, |
b2bdb8cf | 7778 | sig_type->per_cu.sect_off)); |
73051182 | 7779 | |
484cf504 TT |
7780 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7781 | sort_tu_by_abbrev_offset); | |
73051182 | 7782 | |
9c541725 | 7783 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7784 | |
b2bdb8cf | 7785 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7786 | { |
73051182 DE |
7787 | /* Switch to the next abbrev table if necessary. */ |
7788 | if (abbrev_table == NULL | |
b2bdb8cf | 7789 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7790 | { |
b2bdb8cf | 7791 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7792 | abbrev_table = |
976ca316 SM |
7793 | abbrev_table::read (per_objfile->objfile, |
7794 | &per_objfile->per_bfd->abbrev, abbrev_offset); | |
73051182 DE |
7795 | ++tu_stats->nr_uniq_abbrev_tables; |
7796 | } | |
7797 | ||
976ca316 | 7798 | cutu_reader reader (&tu.sig_type->per_cu, per_objfile, |
2e671100 | 7799 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7800 | if (!reader.dummy_p) |
7801 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7802 | reader.comp_unit_die); |
73051182 | 7803 | } |
6aa5f3a6 | 7804 | } |
73051182 | 7805 | |
6aa5f3a6 DE |
7806 | /* Print collected type unit statistics. */ |
7807 | ||
7808 | static void | |
976ca316 | 7809 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7810 | { |
976ca316 | 7811 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 DE |
7812 | |
7813 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf | 7814 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
976ca316 | 7815 | per_objfile->per_bfd->all_type_units.size ()); |
6aa5f3a6 DE |
7816 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7817 | tu_stats->nr_uniq_abbrev_tables); | |
7818 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7819 | tu_stats->nr_symtabs); | |
7820 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7821 | tu_stats->nr_symtab_sharers); | |
7822 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7823 | tu_stats->nr_stmt_less_type_units); | |
7824 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7825 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7826 | } |
7827 | ||
f4dc4d17 DE |
7828 | /* Traversal function for build_type_psymtabs. */ |
7829 | ||
7830 | static int | |
7831 | build_type_psymtab_dependencies (void **slot, void *info) | |
7832 | { | |
976ca316 SM |
7833 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
7834 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 | 7835 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
094b34ac | 7836 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7837 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7838 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7839 | int i; |
7840 | ||
7841 | gdb_assert (len > 0); | |
197400e8 | 7842 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7843 | |
7844 | pst->number_of_dependencies = len; | |
a9342b62 | 7845 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7846 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7847 | { |
df07e2c7 | 7848 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7849 | gdb_assert (iter->per_cu.is_debug_types); |
7850 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7851 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7852 | } |
7853 | ||
df07e2c7 AB |
7854 | delete tu_group->tus; |
7855 | tu_group->tus = nullptr; | |
348e048f DE |
7856 | |
7857 | return 1; | |
7858 | } | |
7859 | ||
7860 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7861 | Build partial symbol tables for the .debug_types comp-units. */ | |
7862 | ||
7863 | static void | |
976ca316 | 7864 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
348e048f | 7865 | { |
976ca316 | 7866 | if (! create_all_type_units (per_objfile)) |
348e048f DE |
7867 | return; |
7868 | ||
976ca316 | 7869 | build_type_psymtabs_1 (per_objfile); |
6aa5f3a6 | 7870 | } |
f4dc4d17 | 7871 | |
6aa5f3a6 DE |
7872 | /* Traversal function for process_skeletonless_type_unit. |
7873 | Read a TU in a DWO file and build partial symbols for it. */ | |
7874 | ||
7875 | static int | |
7876 | process_skeletonless_type_unit (void **slot, void *info) | |
7877 | { | |
7878 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 7879 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
7880 | struct signatured_type find_entry, *entry; |
7881 | ||
7882 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7883 | ||
976ca316 SM |
7884 | if (per_objfile->per_bfd->signatured_types == NULL) |
7885 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7886 | |
7887 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 7888 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7889 | &find_entry, INSERT); |
6aa5f3a6 DE |
7890 | /* If we've already seen this type there's nothing to do. What's happening |
7891 | is we're doing our own version of comdat-folding here. */ | |
7892 | if (*slot != NULL) | |
7893 | return 1; | |
7894 | ||
7895 | /* This does the job that create_all_type_units would have done for | |
7896 | this TU. */ | |
976ca316 SM |
7897 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
7898 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7899 | *slot = entry; |
7900 | ||
7901 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
976ca316 | 7902 | cutu_reader reader (&entry->per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
7903 | if (!reader.dummy_p) |
7904 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7905 | reader.comp_unit_die); |
6aa5f3a6 DE |
7906 | |
7907 | return 1; | |
7908 | } | |
7909 | ||
7910 | /* Traversal function for process_skeletonless_type_units. */ | |
7911 | ||
7912 | static int | |
7913 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7914 | { | |
7915 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7916 | ||
7917 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7918 | htab_traverse_noresize (dwo_file->tus.get (), |
7919 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7920 | |
7921 | return 1; | |
7922 | } | |
7923 | ||
7924 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7925 | This is needed in case a TU was emitted without its skeleton. | |
7926 | Note: This can't be done until we know what all the DWO files are. */ | |
7927 | ||
7928 | static void | |
976ca316 | 7929 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
7930 | { |
7931 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
7932 | if (get_dwp_file (per_objfile) == NULL |
7933 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 7934 | { |
976ca316 | 7935 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 7936 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 7937 | per_objfile); |
6aa5f3a6 | 7938 | } |
348e048f DE |
7939 | } |
7940 | ||
ed2dc618 | 7941 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7942 | |
7943 | static void | |
976ca316 | 7944 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 7945 | { |
976ca316 | 7946 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 7947 | { |
891813be | 7948 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7949 | |
36586728 TT |
7950 | if (pst == NULL) |
7951 | continue; | |
7952 | ||
b76e467d | 7953 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7954 | { |
7955 | /* Set the 'user' field only if it is not already set. */ | |
7956 | if (pst->dependencies[j]->user == NULL) | |
7957 | pst->dependencies[j]->user = pst; | |
7958 | } | |
7959 | } | |
7960 | } | |
7961 | ||
93311388 DE |
7962 | /* Build the partial symbol table by doing a quick pass through the |
7963 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7964 | |
93311388 | 7965 | static void |
976ca316 | 7966 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 7967 | { |
976ca316 | 7968 | struct objfile *objfile = per_objfile->objfile; |
93311388 | 7969 | |
b4f54984 | 7970 | if (dwarf_read_debug) |
45cfd468 DE |
7971 | { |
7972 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 7973 | objfile_name (objfile)); |
45cfd468 DE |
7974 | } |
7975 | ||
76935768 | 7976 | scoped_restore restore_reading_psyms |
976ca316 | 7977 | = make_scoped_restore (&per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 7978 | true); |
98bfdba5 | 7979 | |
976ca316 | 7980 | per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 7981 | |
93311388 DE |
7982 | /* Any cached compilation units will be linked by the per-objfile |
7983 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 7984 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 7985 | |
976ca316 | 7986 | build_type_psymtabs (per_objfile); |
348e048f | 7987 | |
976ca316 | 7988 | create_all_comp_units (per_objfile); |
c906108c | 7989 | |
60606b2c TT |
7990 | /* Create a temporary address map on a temporary obstack. We later |
7991 | copy this to the final obstack. */ | |
8268c778 | 7992 | auto_obstack temp_obstack; |
791afaa2 TT |
7993 | |
7994 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 7995 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7996 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7997 | |
976ca316 | 7998 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
7999 | { |
8000 | if (per_cu->v.psymtab != NULL) | |
8001 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
8002 | continue; | |
976ca316 | 8003 | process_psymtab_comp_unit (per_cu, per_objfile, false, |
ab432490 | 8004 | language_minimal); |
3d5afab3 | 8005 | } |
ff013f42 | 8006 | |
6aa5f3a6 | 8007 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 8008 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
8009 | |
8010 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
976ca316 | 8011 | if (per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 8012 | { |
976ca316 SM |
8013 | htab_traverse_noresize (per_objfile->per_bfd->type_unit_groups.get (), |
8014 | build_type_psymtab_dependencies, per_objfile); | |
6aa5f3a6 DE |
8015 | } |
8016 | ||
b4f54984 | 8017 | if (dwarf_read_debug) |
976ca316 | 8018 | print_tu_stats (per_objfile); |
6aa5f3a6 | 8019 | |
976ca316 | 8020 | set_partial_user (per_objfile); |
95554aad | 8021 | |
d320c2b5 TT |
8022 | objfile->partial_symtabs->psymtabs_addrmap |
8023 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8024 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8025 | /* At this point we want to keep the address map. */ |
8026 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8027 | |
b4f54984 | 8028 | if (dwarf_read_debug) |
45cfd468 | 8029 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8030 | objfile_name (objfile)); |
ae038cb0 DJ |
8031 | } |
8032 | ||
dee91e82 DE |
8033 | /* Load the partial DIEs for a secondary CU into memory. |
8034 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8035 | |
dee91e82 | 8036 | static void |
ab432490 | 8037 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
8038 | dwarf2_per_objfile *per_objfile, |
8039 | dwarf2_cu *existing_cu) | |
dee91e82 | 8040 | { |
2e671100 | 8041 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
8042 | |
8043 | if (!reader.dummy_p) | |
8044 | { | |
8045 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8046 | language_minimal); | |
8047 | ||
8048 | /* Check if comp unit has_children. | |
8049 | If so, read the rest of the partial symbols from this comp unit. | |
8050 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8051 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8052 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8053 | |
8054 | reader.keep (); | |
c0ab21c2 | 8055 | } |
ae038cb0 DJ |
8056 | } |
8057 | ||
ae038cb0 | 8058 | static void |
976ca316 | 8059 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 8060 | struct dwarf2_section_info *section, |
f1902523 | 8061 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8062 | unsigned int is_dwz) |
ae038cb0 | 8063 | { |
d521ce57 | 8064 | const gdb_byte *info_ptr; |
976ca316 | 8065 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 8066 | |
b4f54984 | 8067 | if (dwarf_read_debug) |
bf6af496 | 8068 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
8069 | section->get_name (), |
8070 | section->get_file_name ()); | |
bf6af496 | 8071 | |
96b79293 | 8072 | section->read (objfile); |
ae038cb0 | 8073 | |
36586728 | 8074 | info_ptr = section->buffer; |
6e70227d | 8075 | |
36586728 | 8076 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8077 | { |
ae038cb0 | 8078 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8079 | |
9c541725 | 8080 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8081 | |
f1902523 | 8082 | comp_unit_head cu_header; |
976ca316 | 8083 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 SM |
8084 | abbrev_section, info_ptr, |
8085 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8086 | |
8087 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8088 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 8089 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8090 | else |
8091 | { | |
976ca316 | 8092 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8093 | sig_type->signature = cu_header.signature; |
8094 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8095 | this_cu = &sig_type->per_cu; | |
8096 | } | |
8097 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8098 | this_cu->sect_off = sect_off; |
f1902523 | 8099 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8100 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8101 | this_cu->section = section; |
ae038cb0 | 8102 | |
976ca316 | 8103 | per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8104 | |
8105 | info_ptr = info_ptr + this_cu->length; | |
8106 | } | |
36586728 TT |
8107 | } |
8108 | ||
8109 | /* Create a list of all compilation units in OBJFILE. | |
8110 | This is only done for -readnow and building partial symtabs. */ | |
8111 | ||
8112 | static void | |
976ca316 | 8113 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 8114 | { |
976ca316 SM |
8115 | gdb_assert (per_objfile->per_bfd->all_comp_units.empty ()); |
8116 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, | |
8117 | &per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8118 | |
976ca316 | 8119 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 8120 | if (dwz != NULL) |
976ca316 | 8121 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1); |
c906108c SS |
8122 | } |
8123 | ||
5734ee8b | 8124 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8125 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8126 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8127 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8128 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8129 | |
72bf9492 DJ |
8130 | static void |
8131 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8132 | CORE_ADDR *highpc, int set_addrmap, |
8133 | struct dwarf2_cu *cu) | |
c906108c | 8134 | { |
72bf9492 | 8135 | struct partial_die_info *pdi; |
c906108c | 8136 | |
91c24f0a DC |
8137 | /* Now, march along the PDI's, descending into ones which have |
8138 | interesting children but skipping the children of the other ones, | |
8139 | until we reach the end of the compilation unit. */ | |
c906108c | 8140 | |
72bf9492 | 8141 | pdi = first_die; |
91c24f0a | 8142 | |
72bf9492 DJ |
8143 | while (pdi != NULL) |
8144 | { | |
52356b79 | 8145 | pdi->fixup (cu); |
c906108c | 8146 | |
f55ee35c | 8147 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8148 | children, so we need to look at them. Ditto for anonymous |
8149 | enums. */ | |
933c6fe4 | 8150 | |
7d00ffec | 8151 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8152 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8153 | || pdi->tag == DW_TAG_imported_unit |
8154 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8155 | { |
72bf9492 | 8156 | switch (pdi->tag) |
c906108c SS |
8157 | { |
8158 | case DW_TAG_subprogram: | |
b1dc1806 | 8159 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8160 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
8161 | if (cu->language == language_cplus) |
8162 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
8163 | set_addrmap, cu); | |
c906108c | 8164 | break; |
72929c62 | 8165 | case DW_TAG_constant: |
c906108c SS |
8166 | case DW_TAG_variable: |
8167 | case DW_TAG_typedef: | |
91c24f0a | 8168 | case DW_TAG_union_type: |
317d2668 TV |
8169 | if (!pdi->is_declaration |
8170 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8171 | { |
72bf9492 | 8172 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8173 | } |
8174 | break; | |
c906108c | 8175 | case DW_TAG_class_type: |
680b30c7 | 8176 | case DW_TAG_interface_type: |
c906108c | 8177 | case DW_TAG_structure_type: |
72bf9492 | 8178 | if (!pdi->is_declaration) |
c906108c | 8179 | { |
72bf9492 | 8180 | add_partial_symbol (pdi, cu); |
c906108c | 8181 | } |
b7fee5a3 KS |
8182 | if ((cu->language == language_rust |
8183 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8184 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8185 | set_addrmap, cu); | |
c906108c | 8186 | break; |
91c24f0a | 8187 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8188 | if (!pdi->is_declaration) |
8189 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8190 | break; |
8191 | case DW_TAG_base_type: | |
a02abb62 | 8192 | case DW_TAG_subrange_type: |
c906108c | 8193 | /* File scope base type definitions are added to the partial |
c5aa993b | 8194 | symbol table. */ |
72bf9492 | 8195 | add_partial_symbol (pdi, cu); |
c906108c | 8196 | break; |
d9fa45fe | 8197 | case DW_TAG_namespace: |
cdc07690 | 8198 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8199 | break; |
5d7cb8df | 8200 | case DW_TAG_module: |
59c35742 AB |
8201 | if (!pdi->is_declaration) |
8202 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8203 | break; |
95554aad TT |
8204 | case DW_TAG_imported_unit: |
8205 | { | |
8206 | struct dwarf2_per_cu_data *per_cu; | |
8207 | ||
f4dc4d17 DE |
8208 | /* For now we don't handle imported units in type units. */ |
8209 | if (cu->per_cu->is_debug_types) | |
8210 | { | |
8211 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8212 | " supported in type units [in module %s]"), | |
5e22e966 | 8213 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8214 | } |
8215 | ||
e3b94546 | 8216 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8217 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8218 | |
8219 | /* Go read the partial unit, if needed. */ | |
8220 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8221 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8222 | cu->language); | |
95554aad | 8223 | |
ae640021 | 8224 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8225 | } |
8226 | break; | |
74921315 KS |
8227 | case DW_TAG_imported_declaration: |
8228 | add_partial_symbol (pdi, cu); | |
8229 | break; | |
c906108c SS |
8230 | default: |
8231 | break; | |
8232 | } | |
8233 | } | |
8234 | ||
72bf9492 DJ |
8235 | /* If the die has a sibling, skip to the sibling. */ |
8236 | ||
8237 | pdi = pdi->die_sibling; | |
8238 | } | |
8239 | } | |
8240 | ||
8241 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8242 | |
72bf9492 | 8243 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8244 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8245 | Enumerators are an exception; they use the scope of their parent |
8246 | enumeration type, i.e. the name of the enumeration type is not | |
8247 | prepended to the enumerator. | |
91c24f0a | 8248 | |
72bf9492 DJ |
8249 | There are two complexities. One is DW_AT_specification; in this |
8250 | case "parent" means the parent of the target of the specification, | |
8251 | instead of the direct parent of the DIE. The other is compilers | |
8252 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8253 | the fully qualified name of structure types from their members' | |
8254 | linkage names. This must be done using the DIE's children rather | |
8255 | than the children of any DW_AT_specification target. We only need | |
8256 | to do this for structures at the top level, i.e. if the target of | |
8257 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8258 | have a parent. */ | |
8259 | ||
8260 | /* Compute the scope prefix associated with PDI's parent, in | |
8261 | compilation unit CU. The result will be allocated on CU's | |
8262 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8263 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8264 | static const char * |
72bf9492 DJ |
8265 | partial_die_parent_scope (struct partial_die_info *pdi, |
8266 | struct dwarf2_cu *cu) | |
8267 | { | |
15d034d0 | 8268 | const char *grandparent_scope; |
72bf9492 | 8269 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8270 | |
72bf9492 DJ |
8271 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8272 | then this means the parent of the specification DIE. */ | |
8273 | ||
8274 | real_pdi = pdi; | |
72bf9492 | 8275 | while (real_pdi->has_specification) |
fb816e8b | 8276 | { |
122cf0f2 AB |
8277 | auto res = find_partial_die (real_pdi->spec_offset, |
8278 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8279 | real_pdi = res.pdi; |
8280 | cu = res.cu; | |
8281 | } | |
72bf9492 DJ |
8282 | |
8283 | parent = real_pdi->die_parent; | |
8284 | if (parent == NULL) | |
8285 | return NULL; | |
8286 | ||
8287 | if (parent->scope_set) | |
8288 | return parent->scope; | |
8289 | ||
52356b79 | 8290 | parent->fixup (cu); |
72bf9492 | 8291 | |
10b3939b | 8292 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8293 | |
acebe513 UW |
8294 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8295 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8296 | Work around this problem here. */ | |
8297 | if (cu->language == language_cplus | |
6e70227d | 8298 | && parent->tag == DW_TAG_namespace |
7d00ffec | 8299 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
8300 | && grandparent_scope == NULL) |
8301 | { | |
8302 | parent->scope = NULL; | |
8303 | parent->scope_set = 1; | |
8304 | return NULL; | |
8305 | } | |
8306 | ||
0a4b0913 | 8307 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8308 | if (pdi->tag == DW_TAG_enumerator) |
8309 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8310 | parent->scope = grandparent_scope; | |
8311 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8312 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8313 | || parent->tag == DW_TAG_structure_type |
8314 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8315 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8316 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8317 | || parent->tag == DW_TAG_enumeration_type |
8318 | || (cu->language == language_fortran | |
8319 | && parent->tag == DW_TAG_subprogram | |
8320 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8321 | { |
8322 | if (grandparent_scope == NULL) | |
7d00ffec | 8323 | parent->scope = parent->name (cu); |
72bf9492 | 8324 | else |
3e43a32a MS |
8325 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8326 | grandparent_scope, | |
7d00ffec | 8327 | parent->name (cu), 0, cu); |
72bf9492 | 8328 | } |
72bf9492 DJ |
8329 | else |
8330 | { | |
8331 | /* FIXME drow/2004-04-01: What should we be doing with | |
8332 | function-local names? For partial symbols, we should probably be | |
8333 | ignoring them. */ | |
fa9c3fa0 TT |
8334 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8335 | dwarf_tag_name (parent->tag), | |
8336 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8337 | parent->scope = grandparent_scope; |
c906108c SS |
8338 | } |
8339 | ||
72bf9492 DJ |
8340 | parent->scope_set = 1; |
8341 | return parent->scope; | |
8342 | } | |
8343 | ||
8344 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8345 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8346 | |
43816ebc | 8347 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8348 | partial_die_full_name (struct partial_die_info *pdi, |
8349 | struct dwarf2_cu *cu) | |
8350 | { | |
15d034d0 | 8351 | const char *parent_scope; |
72bf9492 | 8352 | |
98bfdba5 PA |
8353 | /* If this is a template instantiation, we can not work out the |
8354 | template arguments from partial DIEs. So, unfortunately, we have | |
8355 | to go through the full DIEs. At least any work we do building | |
8356 | types here will be reused if full symbols are loaded later. */ | |
8357 | if (pdi->has_template_arguments) | |
8358 | { | |
52356b79 | 8359 | pdi->fixup (cu); |
98bfdba5 | 8360 | |
7d00ffec | 8361 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8362 | { |
8363 | struct die_info *die; | |
8364 | struct attribute attr; | |
8365 | struct dwarf2_cu *ref_cu = cu; | |
8366 | ||
b64f50a1 | 8367 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8368 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8369 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8370 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8371 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8372 | ||
43816ebc | 8373 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8374 | } |
8375 | } | |
8376 | ||
72bf9492 DJ |
8377 | parent_scope = partial_die_parent_scope (pdi, cu); |
8378 | if (parent_scope == NULL) | |
8379 | return NULL; | |
8380 | else | |
43816ebc | 8381 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8382 | pdi->name (cu), |
8383 | 0, cu)); | |
c906108c SS |
8384 | } |
8385 | ||
8386 | static void | |
72bf9492 | 8387 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8388 | { |
976ca316 SM |
8389 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8390 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8391 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8392 | CORE_ADDR addr = 0; |
15d034d0 | 8393 | const char *actual_name = NULL; |
e142c38c DJ |
8394 | CORE_ADDR baseaddr; |
8395 | ||
b3b3bada | 8396 | baseaddr = objfile->text_section_offset (); |
c906108c | 8397 | |
43816ebc TT |
8398 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8399 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8400 | if (built_actual_name != NULL) |
43816ebc | 8401 | actual_name = built_actual_name.get (); |
63d06c5c | 8402 | |
72bf9492 | 8403 | if (actual_name == NULL) |
7d00ffec | 8404 | actual_name = pdi->name (cu); |
72bf9492 | 8405 | |
76e288d1 TT |
8406 | partial_symbol psymbol; |
8407 | memset (&psymbol, 0, sizeof (psymbol)); | |
8408 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
8409 | psymbol.ginfo.section = -1; | |
8410 | ||
8411 | /* The code below indicates that the psymbol should be installed by | |
8412 | setting this. */ | |
8413 | gdb::optional<psymbol_placement> where; | |
8414 | ||
c906108c SS |
8415 | switch (pdi->tag) |
8416 | { | |
b1dc1806 | 8417 | case DW_TAG_inlined_subroutine: |
c906108c | 8418 | case DW_TAG_subprogram: |
79748972 TT |
8419 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8420 | - baseaddr); | |
0a4b0913 AB |
8421 | if (pdi->is_external |
8422 | || cu->language == language_ada | |
8423 | || (cu->language == language_fortran | |
8424 | && pdi->die_parent != NULL | |
8425 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8426 | { | |
8427 | /* Normally, only "external" DIEs are part of the global scope. | |
8428 | But in Ada and Fortran, we want to be able to access nested | |
8429 | procedures globally. So all Ada and Fortran subprograms are | |
8430 | stored in the global scope. */ | |
76e288d1 | 8431 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8432 | } |
8433 | else | |
76e288d1 TT |
8434 | where = psymbol_placement::STATIC; |
8435 | ||
8436 | psymbol.domain = VAR_DOMAIN; | |
8437 | psymbol.aclass = LOC_BLOCK; | |
8438 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8439 | psymbol.ginfo.value.address = addr; | |
0c1b455e TT |
8440 | |
8441 | if (pdi->main_subprogram && actual_name != NULL) | |
8442 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8443 | break; |
72929c62 | 8444 | case DW_TAG_constant: |
76e288d1 TT |
8445 | psymbol.domain = VAR_DOMAIN; |
8446 | psymbol.aclass = LOC_STATIC; | |
8447 | where = (pdi->is_external | |
8448 | ? psymbol_placement::GLOBAL | |
8449 | : psymbol_placement::STATIC); | |
72929c62 | 8450 | break; |
c906108c | 8451 | case DW_TAG_variable: |
95554aad TT |
8452 | if (pdi->d.locdesc) |
8453 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8454 | |
95554aad | 8455 | if (pdi->d.locdesc |
caac4577 | 8456 | && addr == 0 |
976ca316 | 8457 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8458 | { |
8459 | /* A global or static variable may also have been stripped | |
8460 | out by the linker if unused, in which case its address | |
8461 | will be nullified; do not add such variables into partial | |
8462 | symbol table then. */ | |
8463 | } | |
8464 | else if (pdi->is_external) | |
c906108c SS |
8465 | { |
8466 | /* Global Variable. | |
8467 | Don't enter into the minimal symbol tables as there is | |
8468 | a minimal symbol table entry from the ELF symbols already. | |
8469 | Enter into partial symbol table if it has a location | |
8470 | descriptor or a type. | |
8471 | If the location descriptor is missing, new_symbol will create | |
8472 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8473 | be determined from the minimal symbol table whenever the variable | |
8474 | is referenced. | |
8475 | The address for the partial symbol table entry is not | |
8476 | used by GDB, but it comes in handy for debugging partial symbol | |
8477 | table building. */ | |
8478 | ||
95554aad | 8479 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8480 | { |
8481 | psymbol.domain = VAR_DOMAIN; | |
8482 | psymbol.aclass = LOC_STATIC; | |
8483 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8484 | psymbol.ginfo.value.address = addr; | |
8485 | where = psymbol_placement::GLOBAL; | |
8486 | } | |
c906108c SS |
8487 | } |
8488 | else | |
8489 | { | |
ff908ebf AW |
8490 | int has_loc = pdi->d.locdesc != NULL; |
8491 | ||
8492 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8493 | without location descriptors or constant values). */ | |
8494 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8495 | return; |
ff908ebf | 8496 | |
76e288d1 TT |
8497 | psymbol.domain = VAR_DOMAIN; |
8498 | psymbol.aclass = LOC_STATIC; | |
8499 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8500 | if (has_loc) | |
8501 | psymbol.ginfo.value.address = addr; | |
8502 | where = psymbol_placement::STATIC; | |
c906108c SS |
8503 | } |
8504 | break; | |
8505 | case DW_TAG_typedef: | |
8506 | case DW_TAG_base_type: | |
a02abb62 | 8507 | case DW_TAG_subrange_type: |
76e288d1 TT |
8508 | psymbol.domain = VAR_DOMAIN; |
8509 | psymbol.aclass = LOC_TYPEDEF; | |
8510 | where = psymbol_placement::STATIC; | |
c906108c | 8511 | break; |
74921315 | 8512 | case DW_TAG_imported_declaration: |
72bf9492 | 8513 | case DW_TAG_namespace: |
76e288d1 TT |
8514 | psymbol.domain = VAR_DOMAIN; |
8515 | psymbol.aclass = LOC_TYPEDEF; | |
8516 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8517 | break; |
530e8392 | 8518 | case DW_TAG_module: |
a5fd13a9 BH |
8519 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8520 | available without any name. If so, we skip the module as it | |
8521 | doesn't bring any value. */ | |
8522 | if (actual_name != nullptr) | |
76e288d1 TT |
8523 | { |
8524 | psymbol.domain = MODULE_DOMAIN; | |
8525 | psymbol.aclass = LOC_TYPEDEF; | |
8526 | where = psymbol_placement::GLOBAL; | |
8527 | } | |
530e8392 | 8528 | break; |
c906108c | 8529 | case DW_TAG_class_type: |
680b30c7 | 8530 | case DW_TAG_interface_type: |
c906108c SS |
8531 | case DW_TAG_structure_type: |
8532 | case DW_TAG_union_type: | |
8533 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8534 | /* Skip external references. The DWARF standard says in the section |
8535 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8536 | structure, union or class type is represented by a structure, | |
8537 | union or class entry that does not have a byte size attribute | |
8538 | and that has a DW_AT_declaration attribute." */ | |
8539 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8540 | return; |
fa4028e9 | 8541 | |
63d06c5c DC |
8542 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8543 | static vs. global. */ | |
76e288d1 TT |
8544 | psymbol.domain = STRUCT_DOMAIN; |
8545 | psymbol.aclass = LOC_TYPEDEF; | |
8546 | where = (cu->language == language_cplus | |
8547 | ? psymbol_placement::GLOBAL | |
8548 | : psymbol_placement::STATIC); | |
c906108c SS |
8549 | break; |
8550 | case DW_TAG_enumerator: | |
76e288d1 TT |
8551 | psymbol.domain = VAR_DOMAIN; |
8552 | psymbol.aclass = LOC_CONST; | |
8553 | where = (cu->language == language_cplus | |
8554 | ? psymbol_placement::GLOBAL | |
8555 | : psymbol_placement::STATIC); | |
c906108c SS |
8556 | break; |
8557 | default: | |
8558 | break; | |
8559 | } | |
76e288d1 TT |
8560 | |
8561 | if (where.has_value ()) | |
8562 | { | |
f049a313 TT |
8563 | if (built_actual_name != nullptr) |
8564 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8565 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8566 | psymbol.ginfo.set_linkage_name (actual_name); | |
8567 | else | |
8568 | { | |
8569 | psymbol.ginfo.set_demangled_name (actual_name, | |
8570 | &objfile->objfile_obstack); | |
8571 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8572 | } | |
76e288d1 TT |
8573 | add_psymbol_to_list (psymbol, *where, objfile); |
8574 | } | |
c906108c SS |
8575 | } |
8576 | ||
5c4e30ca DC |
8577 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8578 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8579 | the name of the enclosing namespace. */ | |
91c24f0a | 8580 | |
72bf9492 DJ |
8581 | static void |
8582 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8583 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8584 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8585 | { |
72bf9492 | 8586 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8587 | |
72bf9492 | 8588 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8589 | |
8590 | /* Now scan partial symbols in that namespace. */ | |
8591 | ||
91c24f0a | 8592 | if (pdi->has_children) |
cdc07690 | 8593 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8594 | } |
8595 | ||
5d7cb8df JK |
8596 | /* Read a partial die corresponding to a Fortran module. */ |
8597 | ||
8598 | static void | |
8599 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8600 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8601 | { |
530e8392 KB |
8602 | /* Add a symbol for the namespace. */ |
8603 | ||
8604 | add_partial_symbol (pdi, cu); | |
8605 | ||
f55ee35c | 8606 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8607 | |
8608 | if (pdi->has_children) | |
cdc07690 | 8609 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8610 | } |
8611 | ||
b1dc1806 XR |
8612 | /* Read a partial die corresponding to a subprogram or an inlined |
8613 | subprogram and create a partial symbol for that subprogram. | |
8614 | When the CU language allows it, this routine also defines a partial | |
8615 | symbol for each nested subprogram that this subprogram contains. | |
8616 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8617 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8618 | |
cdc07690 YQ |
8619 | PDI may also be a lexical block, in which case we simply search |
8620 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8621 | Again, this is only performed when the CU language allows this |
8622 | type of definitions. */ | |
8623 | ||
8624 | static void | |
8625 | add_partial_subprogram (struct partial_die_info *pdi, | |
8626 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8627 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8628 | { |
b1dc1806 | 8629 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8630 | { |
8631 | if (pdi->has_pc_info) | |
8632 | { | |
8633 | if (pdi->lowpc < *lowpc) | |
8634 | *lowpc = pdi->lowpc; | |
8635 | if (pdi->highpc > *highpc) | |
8636 | *highpc = pdi->highpc; | |
cdc07690 | 8637 | if (set_addrmap) |
5734ee8b | 8638 | { |
5e22e966 | 8639 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8640 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8641 | CORE_ADDR baseaddr; |
b926417a TT |
8642 | CORE_ADDR this_highpc; |
8643 | CORE_ADDR this_lowpc; | |
5734ee8b | 8644 | |
b3b3bada | 8645 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8646 | this_lowpc |
8647 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8648 | pdi->lowpc + baseaddr) | |
8649 | - baseaddr); | |
8650 | this_highpc | |
8651 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8652 | pdi->highpc + baseaddr) | |
8653 | - baseaddr); | |
d320c2b5 | 8654 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8655 | this_lowpc, this_highpc - 1, |
9291a0cd | 8656 | cu->per_cu->v.psymtab); |
5734ee8b | 8657 | } |
481860b3 GB |
8658 | } |
8659 | ||
8660 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8661 | { | |
bc30ff58 | 8662 | if (!pdi->is_declaration) |
e8d05480 JB |
8663 | /* Ignore subprogram DIEs that do not have a name, they are |
8664 | illegal. Do not emit a complaint at this point, we will | |
8665 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8666 | if (pdi->name (cu)) |
e8d05480 | 8667 | add_partial_symbol (pdi, cu); |
bc30ff58 JB |
8668 | } |
8669 | } | |
6e70227d | 8670 | |
bc30ff58 JB |
8671 | if (! pdi->has_children) |
8672 | return; | |
8673 | ||
0a4b0913 | 8674 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8675 | { |
8676 | pdi = pdi->die_child; | |
8677 | while (pdi != NULL) | |
8678 | { | |
52356b79 | 8679 | pdi->fixup (cu); |
bc30ff58 | 8680 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8681 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8682 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8683 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8684 | pdi = pdi->die_sibling; |
8685 | } | |
8686 | } | |
8687 | } | |
8688 | ||
91c24f0a DC |
8689 | /* Read a partial die corresponding to an enumeration type. */ |
8690 | ||
72bf9492 DJ |
8691 | static void |
8692 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8693 | struct dwarf2_cu *cu) | |
91c24f0a | 8694 | { |
72bf9492 | 8695 | struct partial_die_info *pdi; |
91c24f0a | 8696 | |
7d00ffec | 8697 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8698 | add_partial_symbol (enum_pdi, cu); |
8699 | ||
8700 | pdi = enum_pdi->die_child; | |
8701 | while (pdi) | |
91c24f0a | 8702 | { |
7d00ffec | 8703 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8704 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8705 | else |
72bf9492 DJ |
8706 | add_partial_symbol (pdi, cu); |
8707 | pdi = pdi->die_sibling; | |
91c24f0a | 8708 | } |
91c24f0a DC |
8709 | } |
8710 | ||
6caca83c CC |
8711 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8712 | ||
8713 | static unsigned int | |
d521ce57 | 8714 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8715 | { |
8716 | unsigned int bytes_read; | |
8717 | ||
8718 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8719 | } | |
8720 | ||
685af9cd TT |
8721 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8722 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8723 | ||
4bb7a0a7 DJ |
8724 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8725 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8726 | the initial number. */ | |
8727 | ||
8728 | static struct abbrev_info * | |
685af9cd TT |
8729 | peek_die_abbrev (const die_reader_specs &reader, |
8730 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8731 | { |
685af9cd | 8732 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8733 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8734 | unsigned int abbrev_number |
8735 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8736 | |
8737 | if (abbrev_number == 0) | |
8738 | return NULL; | |
8739 | ||
685af9cd | 8740 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8741 | if (!abbrev) |
8742 | { | |
422b9917 | 8743 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8744 | " at offset %s [in module %s]"), |
422b9917 | 8745 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8746 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8747 | } |
8748 | ||
8749 | return abbrev; | |
8750 | } | |
8751 | ||
93311388 DE |
8752 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8753 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8754 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8755 | ||
d521ce57 TT |
8756 | static const gdb_byte * |
8757 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8758 | { |
4bb7a0a7 DJ |
8759 | while (1) |
8760 | { | |
685af9cd TT |
8761 | unsigned int bytes_read; |
8762 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8763 | ||
4bb7a0a7 DJ |
8764 | if (abbrev == NULL) |
8765 | return info_ptr + bytes_read; | |
8766 | else | |
dee91e82 | 8767 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8768 | } |
8769 | } | |
8770 | ||
93311388 DE |
8771 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8772 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8773 | abbrev corresponding to that skipped uleb128 should be passed in |
8774 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8775 | children. */ | |
8776 | ||
d521ce57 TT |
8777 | static const gdb_byte * |
8778 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8779 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8780 | { |
8781 | unsigned int bytes_read; | |
8782 | struct attribute attr; | |
dee91e82 DE |
8783 | bfd *abfd = reader->abfd; |
8784 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8785 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8786 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8787 | unsigned int form, i; |
8788 | ||
8789 | for (i = 0; i < abbrev->num_attrs; i++) | |
8790 | { | |
8791 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8792 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8793 | { | |
18a8505e AT |
8794 | bool ignored; |
8795 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8796 | &ignored); | |
4bb7a0a7 | 8797 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8798 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8799 | else |
b9502d3f | 8800 | { |
0826b30a | 8801 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8802 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8803 | |
8804 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8805 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8806 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8807 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8808 | else |
8809 | return sibling_ptr; | |
8810 | } | |
4bb7a0a7 DJ |
8811 | } |
8812 | ||
8813 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8814 | form = abbrev->attrs[i].form; | |
8815 | skip_attribute: | |
8816 | switch (form) | |
8817 | { | |
4bb7a0a7 | 8818 | case DW_FORM_ref_addr: |
ae411497 TT |
8819 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8820 | and later it is offset sized. */ | |
8821 | if (cu->header.version == 2) | |
8822 | info_ptr += cu->header.addr_size; | |
8823 | else | |
8824 | info_ptr += cu->header.offset_size; | |
8825 | break; | |
36586728 TT |
8826 | case DW_FORM_GNU_ref_alt: |
8827 | info_ptr += cu->header.offset_size; | |
8828 | break; | |
ae411497 | 8829 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8830 | info_ptr += cu->header.addr_size; |
8831 | break; | |
8832 | case DW_FORM_data1: | |
8833 | case DW_FORM_ref1: | |
8834 | case DW_FORM_flag: | |
8fe0f950 | 8835 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8836 | info_ptr += 1; |
8837 | break; | |
2dc7f7b3 | 8838 | case DW_FORM_flag_present: |
43988095 | 8839 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8840 | break; |
4bb7a0a7 DJ |
8841 | case DW_FORM_data2: |
8842 | case DW_FORM_ref2: | |
8fe0f950 | 8843 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8844 | info_ptr += 2; |
8845 | break; | |
8fe0f950 AT |
8846 | case DW_FORM_strx3: |
8847 | info_ptr += 3; | |
8848 | break; | |
4bb7a0a7 DJ |
8849 | case DW_FORM_data4: |
8850 | case DW_FORM_ref4: | |
8fe0f950 | 8851 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8852 | info_ptr += 4; |
8853 | break; | |
8854 | case DW_FORM_data8: | |
8855 | case DW_FORM_ref8: | |
55f1336d | 8856 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8857 | info_ptr += 8; |
8858 | break; | |
0224619f JK |
8859 | case DW_FORM_data16: |
8860 | info_ptr += 16; | |
8861 | break; | |
4bb7a0a7 | 8862 | case DW_FORM_string: |
9b1c24c8 | 8863 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8864 | info_ptr += bytes_read; |
8865 | break; | |
2dc7f7b3 | 8866 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8867 | case DW_FORM_strp: |
36586728 | 8868 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8869 | info_ptr += cu->header.offset_size; |
8870 | break; | |
2dc7f7b3 | 8871 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8872 | case DW_FORM_block: |
8873 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8874 | info_ptr += bytes_read; | |
8875 | break; | |
8876 | case DW_FORM_block1: | |
8877 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8878 | break; | |
8879 | case DW_FORM_block2: | |
8880 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8881 | break; | |
8882 | case DW_FORM_block4: | |
8883 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8884 | break; | |
336d760d | 8885 | case DW_FORM_addrx: |
cf532bd1 | 8886 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8887 | case DW_FORM_sdata: |
8888 | case DW_FORM_udata: | |
8889 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8890 | case DW_FORM_GNU_addr_index: |
8891 | case DW_FORM_GNU_str_index: | |
18a8505e | 8892 | case DW_FORM_rnglistx: |
41144253 | 8893 | case DW_FORM_loclistx: |
d521ce57 | 8894 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8895 | break; |
8896 | case DW_FORM_indirect: | |
8897 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8898 | info_ptr += bytes_read; | |
8899 | /* We need to continue parsing from here, so just go back to | |
8900 | the top. */ | |
8901 | goto skip_attribute; | |
8902 | ||
8903 | default: | |
3e43a32a MS |
8904 | error (_("Dwarf Error: Cannot handle %s " |
8905 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8906 | dwarf_form_name (form), |
8907 | bfd_get_filename (abfd)); | |
8908 | } | |
8909 | } | |
8910 | ||
8911 | if (abbrev->has_children) | |
dee91e82 | 8912 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8913 | else |
8914 | return info_ptr; | |
8915 | } | |
8916 | ||
93311388 | 8917 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8918 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8919 | |
d521ce57 | 8920 | static const gdb_byte * |
dee91e82 DE |
8921 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8922 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8923 | const gdb_byte *info_ptr) |
91c24f0a DC |
8924 | { |
8925 | /* Do we know the sibling already? */ | |
72bf9492 | 8926 | |
91c24f0a DC |
8927 | if (orig_pdi->sibling) |
8928 | return orig_pdi->sibling; | |
8929 | ||
8930 | /* Are there any children to deal with? */ | |
8931 | ||
8932 | if (!orig_pdi->has_children) | |
8933 | return info_ptr; | |
8934 | ||
4bb7a0a7 | 8935 | /* Skip the children the long way. */ |
91c24f0a | 8936 | |
dee91e82 | 8937 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8938 | } |
8939 | ||
257e7a09 | 8940 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8941 | not NULL. */ |
c906108c | 8942 | |
891813be TT |
8943 | void |
8944 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8945 | { |
976ca316 | 8946 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 8947 | |
976ca316 | 8948 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 8949 | |
077cbab2 TT |
8950 | /* If this psymtab is constructed from a debug-only objfile, the |
8951 | has_section_at_zero flag will not necessarily be correct. We | |
8952 | can get the correct value for this flag by looking at the data | |
8953 | associated with the (presumably stripped) associated objfile. */ | |
8954 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8955 | { |
976ca316 | 8956 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 8957 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 8958 | |
976ca316 SM |
8959 | per_objfile->per_bfd->has_section_at_zero |
8960 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 8961 | } |
98bfdba5 | 8962 | |
8566b89b | 8963 | expand_psymtab (objfile); |
95554aad | 8964 | |
976ca316 | 8965 | process_cu_includes (per_objfile); |
c906108c | 8966 | } |
9cdd5dbd DE |
8967 | \f |
8968 | /* Reading in full CUs. */ | |
c906108c | 8969 | |
10b3939b DJ |
8970 | /* Add PER_CU to the queue. */ |
8971 | ||
8972 | static void | |
120ce1b5 SM |
8973 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
8974 | dwarf2_per_objfile *per_objfile, | |
95554aad | 8975 | enum language pretend_language) |
10b3939b | 8976 | { |
10b3939b | 8977 | per_cu->queued = 1; |
120ce1b5 | 8978 | per_cu->per_bfd->queue.emplace (per_cu, per_objfile, pretend_language); |
10b3939b DJ |
8979 | } |
8980 | ||
89e63ee4 DE |
8981 | /* If PER_CU is not yet queued, add it to the queue. |
8982 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
8983 | dependency. | |
0907af0c | 8984 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
8985 | meaning either PER_CU is already queued or it is already loaded. |
8986 | ||
8987 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
8988 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
8989 | |
8990 | static int | |
89e63ee4 | 8991 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
8992 | dwarf2_per_cu_data *per_cu, |
8993 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
8994 | enum language pretend_language) |
8995 | { | |
8996 | /* We may arrive here during partial symbol reading, if we need full | |
8997 | DIEs to process an unusual case (e.g. template arguments). Do | |
8998 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 8999 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 9000 | { |
7188ed02 SM |
9001 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9002 | ||
9003 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
9004 | return 1; |
9005 | return 0; | |
9006 | } | |
9007 | ||
9008 | /* Mark the dependence relation so that we don't flush PER_CU | |
9009 | too early. */ | |
89e63ee4 DE |
9010 | if (dependent_cu != NULL) |
9011 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9012 | |
9013 | /* If it's already on the queue, we have nothing to do. */ | |
9014 | if (per_cu->queued) | |
9015 | return 0; | |
9016 | ||
9017 | /* If the compilation unit is already loaded, just mark it as | |
9018 | used. */ | |
7188ed02 SM |
9019 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9020 | if (cu != nullptr) | |
0907af0c | 9021 | { |
7188ed02 | 9022 | cu->last_used = 0; |
0907af0c DE |
9023 | return 0; |
9024 | } | |
9025 | ||
9026 | /* Add it to the queue. */ | |
120ce1b5 | 9027 | queue_comp_unit (per_cu, per_objfile, pretend_language); |
0907af0c DE |
9028 | |
9029 | return 1; | |
9030 | } | |
9031 | ||
10b3939b DJ |
9032 | /* Process the queue. */ |
9033 | ||
9034 | static void | |
976ca316 | 9035 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 9036 | { |
b4f54984 | 9037 | if (dwarf_read_debug) |
45cfd468 DE |
9038 | { |
9039 | fprintf_unfiltered (gdb_stdlog, | |
9040 | "Expanding one or more symtabs of objfile %s ...\n", | |
976ca316 | 9041 | objfile_name (per_objfile->objfile)); |
45cfd468 DE |
9042 | } |
9043 | ||
03dd20cc DJ |
9044 | /* The queue starts out with one item, but following a DIE reference |
9045 | may load a new CU, adding it to the end of the queue. */ | |
976ca316 | 9046 | while (!per_objfile->per_bfd->queue.empty ()) |
10b3939b | 9047 | { |
976ca316 | 9048 | dwarf2_queue_item &item = per_objfile->per_bfd->queue.front (); |
7188ed02 | 9049 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 9050 | |
976ca316 | 9051 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 9052 | { |
976ca316 | 9053 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 9054 | |
7188ed02 SM |
9055 | /* Skip dummy CUs. */ |
9056 | if (cu != nullptr) | |
73be47f5 | 9057 | { |
7188ed02 SM |
9058 | unsigned int debug_print_threshold; |
9059 | char buf[100]; | |
9060 | ||
9061 | if (per_cu->is_debug_types) | |
9062 | { | |
9063 | struct signatured_type *sig_type = | |
9064 | (struct signatured_type *) per_cu; | |
9065 | ||
9066 | sprintf (buf, "TU %s at offset %s", | |
9067 | hex_string (sig_type->signature), | |
9068 | sect_offset_str (per_cu->sect_off)); | |
9069 | /* There can be 100s of TUs. | |
9070 | Only print them in verbose mode. */ | |
9071 | debug_print_threshold = 2; | |
9072 | } | |
9073 | else | |
9074 | { | |
9075 | sprintf (buf, "CU at offset %s", | |
9076 | sect_offset_str (per_cu->sect_off)); | |
9077 | debug_print_threshold = 1; | |
9078 | } | |
247f5c4f | 9079 | |
7188ed02 SM |
9080 | if (dwarf_read_debug >= debug_print_threshold) |
9081 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); | |
f4dc4d17 | 9082 | |
7188ed02 SM |
9083 | if (per_cu->is_debug_types) |
9084 | process_full_type_unit (cu, item.pretend_language); | |
9085 | else | |
9086 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9087 | |
7188ed02 SM |
9088 | if (dwarf_read_debug >= debug_print_threshold) |
9089 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); | |
9090 | } | |
f4dc4d17 | 9091 | } |
10b3939b | 9092 | |
7188ed02 | 9093 | per_cu->queued = 0; |
976ca316 | 9094 | per_objfile->per_bfd->queue.pop (); |
10b3939b DJ |
9095 | } |
9096 | ||
b4f54984 | 9097 | if (dwarf_read_debug) |
45cfd468 DE |
9098 | { |
9099 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
976ca316 | 9100 | objfile_name (per_objfile->objfile)); |
45cfd468 | 9101 | } |
10b3939b DJ |
9102 | } |
9103 | ||
10b3939b DJ |
9104 | /* Read in full symbols for PST, and anything it depends on. */ |
9105 | ||
8566b89b TT |
9106 | void |
9107 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9108 | { |
af758d11 | 9109 | gdb_assert (!readin_p (objfile)); |
95554aad | 9110 | |
17ee85fc TT |
9111 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9112 | free_cached_comp_units freer (per_objfile); | |
48993951 | 9113 | expand_dependencies (objfile); |
aaa75496 | 9114 | |
97a1449a | 9115 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 9116 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9117 | } |
9118 | ||
af758d11 SM |
9119 | /* See psympriv.h. */ |
9120 | ||
9121 | bool | |
9122 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9123 | { | |
9124 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9125 | return per_objfile->symtab_set_p (per_cu_data); | |
9126 | } | |
9127 | ||
9128 | /* See psympriv.h. */ | |
9129 | ||
9130 | compunit_symtab * | |
9131 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9132 | { | |
9133 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9134 | return per_objfile->get_symtab (per_cu_data); | |
9135 | } | |
9136 | ||
dee91e82 DE |
9137 | /* Trivial hash function for die_info: the hash value of a DIE |
9138 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9139 | |
dee91e82 DE |
9140 | static hashval_t |
9141 | die_hash (const void *item) | |
10b3939b | 9142 | { |
9a3c8263 | 9143 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9144 | |
9c541725 | 9145 | return to_underlying (die->sect_off); |
dee91e82 | 9146 | } |
63d06c5c | 9147 | |
dee91e82 DE |
9148 | /* Trivial comparison function for die_info structures: two DIEs |
9149 | are equal if they have the same offset. */ | |
98bfdba5 | 9150 | |
dee91e82 DE |
9151 | static int |
9152 | die_eq (const void *item_lhs, const void *item_rhs) | |
9153 | { | |
9a3c8263 SM |
9154 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9155 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9156 | |
9c541725 | 9157 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9158 | } |
c906108c | 9159 | |
c0ab21c2 | 9160 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9161 | |
dee91e82 | 9162 | static void |
ab432490 SM |
9163 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9164 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 TT |
9165 | bool skip_partial, |
9166 | enum language pretend_language) | |
dee91e82 | 9167 | { |
c0ab21c2 TT |
9168 | gdb_assert (! this_cu->is_debug_types); |
9169 | ||
7188ed02 SM |
9170 | dwarf2_cu *existing_cu = per_objfile->get_cu (this_cu); |
9171 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); | |
c0ab21c2 TT |
9172 | if (reader.dummy_p) |
9173 | return; | |
9174 | ||
9175 | struct dwarf2_cu *cu = reader.cu; | |
9176 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9177 | |
dee91e82 DE |
9178 | gdb_assert (cu->die_hash == NULL); |
9179 | cu->die_hash = | |
9180 | htab_create_alloc_ex (cu->header.length / 12, | |
9181 | die_hash, | |
9182 | die_eq, | |
9183 | NULL, | |
9184 | &cu->comp_unit_obstack, | |
9185 | hashtab_obstack_allocate, | |
9186 | dummy_obstack_deallocate); | |
e142c38c | 9187 | |
3e225074 | 9188 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9189 | reader.comp_unit_die->child |
9190 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9191 | &info_ptr, reader.comp_unit_die); | |
9192 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9193 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9194 | |
9195 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9196 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9197 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9198 | or we won't be able to build types correctly. |
9199 | Similarly, if we do not read the producer, we can not apply | |
9200 | producer-specific interpretation. */ | |
c0ab21c2 | 9201 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9202 | |
9203 | reader.keep (); | |
10b3939b DJ |
9204 | } |
9205 | ||
3da10d80 KS |
9206 | /* Add a DIE to the delayed physname list. */ |
9207 | ||
9208 | static void | |
9209 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9210 | const char *name, struct die_info *die, | |
9211 | struct dwarf2_cu *cu) | |
9212 | { | |
9213 | struct delayed_method_info mi; | |
9214 | mi.type = type; | |
9215 | mi.fnfield_index = fnfield_index; | |
9216 | mi.index = index; | |
9217 | mi.name = name; | |
9218 | mi.die = die; | |
c89b44cd | 9219 | cu->method_list.push_back (mi); |
3da10d80 KS |
9220 | } |
9221 | ||
3693fdb3 PA |
9222 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9223 | "const" / "volatile". If so, decrements LEN by the length of the | |
9224 | modifier and return true. Otherwise return false. */ | |
9225 | ||
9226 | template<size_t N> | |
9227 | static bool | |
9228 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9229 | { | |
9230 | size_t mod_len = sizeof (mod) - 1; | |
9231 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9232 | { | |
9233 | len -= mod_len; | |
9234 | return true; | |
9235 | } | |
9236 | return false; | |
9237 | } | |
9238 | ||
3da10d80 KS |
9239 | /* Compute the physnames of any methods on the CU's method list. |
9240 | ||
9241 | The computation of method physnames is delayed in order to avoid the | |
9242 | (bad) condition that one of the method's formal parameters is of an as yet | |
9243 | incomplete type. */ | |
9244 | ||
9245 | static void | |
9246 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9247 | { | |
3693fdb3 | 9248 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9249 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9250 | return; |
9251 | gdb_assert (cu->language == language_cplus); | |
9252 | ||
52941706 | 9253 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9254 | { |
1d06ead6 | 9255 | const char *physname; |
3da10d80 | 9256 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9257 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9258 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9259 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9260 | = physname ? physname : ""; |
3693fdb3 PA |
9261 | |
9262 | /* Since there's no tag to indicate whether a method is a | |
9263 | const/volatile overload, extract that information out of the | |
9264 | demangled name. */ | |
9265 | if (physname != NULL) | |
9266 | { | |
9267 | size_t len = strlen (physname); | |
9268 | ||
9269 | while (1) | |
9270 | { | |
9271 | if (physname[len] == ')') /* shortcut */ | |
9272 | break; | |
9273 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9274 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9275 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9276 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9277 | else |
9278 | break; | |
9279 | } | |
9280 | } | |
3da10d80 | 9281 | } |
c89b44cd TT |
9282 | |
9283 | /* The list is no longer needed. */ | |
9284 | cu->method_list.clear (); | |
3da10d80 KS |
9285 | } |
9286 | ||
a766d390 DE |
9287 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9288 | and it's not clear if/how imported objects will appear. | |
9289 | To keep Go support simple until that's worked out, | |
9290 | go back through what we've read and create something usable. | |
9291 | We could do this while processing each DIE, and feels kinda cleaner, | |
9292 | but that way is more invasive. | |
9293 | This is to, for example, allow the user to type "p var" or "b main" | |
9294 | without having to specify the package name, and allow lookups | |
9295 | of module.object to work in contexts that use the expression | |
9296 | parser. */ | |
9297 | ||
9298 | static void | |
9299 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9300 | { | |
421d1616 | 9301 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9302 | struct pending *list; |
9303 | int i; | |
9304 | ||
c24bdb02 | 9305 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9306 | list != NULL; |
9307 | list = list->next) | |
a766d390 DE |
9308 | { |
9309 | for (i = 0; i < list->nsyms; ++i) | |
9310 | { | |
9311 | struct symbol *sym = list->symbol[i]; | |
9312 | ||
c1b5c1eb | 9313 | if (sym->language () == language_go |
a766d390 DE |
9314 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9315 | { | |
421d1616 TT |
9316 | gdb::unique_xmalloc_ptr<char> this_package_name |
9317 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9318 | |
9319 | if (this_package_name == NULL) | |
9320 | continue; | |
9321 | if (package_name == NULL) | |
421d1616 | 9322 | package_name = std::move (this_package_name); |
a766d390 DE |
9323 | else |
9324 | { | |
5e22e966 | 9325 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9326 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9327 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9328 | (symbol_symtab (sym) != NULL |
9329 | ? symtab_to_filename_for_display | |
9330 | (symbol_symtab (sym)) | |
e3b94546 | 9331 | : objfile_name (objfile)), |
421d1616 | 9332 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9333 | } |
9334 | } | |
9335 | } | |
9336 | } | |
9337 | ||
9338 | if (package_name != NULL) | |
9339 | { | |
5e22e966 | 9340 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9341 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9342 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9343 | saved_package_name); | |
a766d390 DE |
9344 | struct symbol *sym; |
9345 | ||
8c14c3a3 | 9346 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9347 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9348 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9349 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9350 | e.g., "main" finds the "main" module and not C's main(). */ | |
9351 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9352 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9353 | SYMBOL_TYPE (sym) = type; |
9354 | ||
c24bdb02 | 9355 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9356 | } |
9357 | } | |
9358 | ||
c9317f21 TT |
9359 | /* Allocate a fully-qualified name consisting of the two parts on the |
9360 | obstack. */ | |
9361 | ||
9362 | static const char * | |
9363 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9364 | { | |
9365 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9366 | } | |
9367 | ||
9c6a1327 TT |
9368 | /* A helper that allocates a variant part to attach to a Rust enum |
9369 | type. OBSTACK is where the results should be allocated. TYPE is | |
9370 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
9371 | discriminant. It must be the index of one of the fields of TYPE. | |
9372 | DEFAULT_INDEX is the index of the default field; or -1 if there is | |
9373 | no default. RANGES is indexed by "effective" field number (the | |
9374 | field index, but omitting the discriminant and default fields) and | |
9375 | must hold the discriminant values used by the variants. Note that | |
9376 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9377 | already allocated on it, or static. */ | |
c9317f21 | 9378 | |
9c6a1327 TT |
9379 | static void |
9380 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9381 | int discriminant_index, int default_index, | |
9382 | gdb::array_view<discriminant_range> ranges) | |
9383 | { | |
9384 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. Those | |
9385 | must be handled by the caller. */ | |
9386 | gdb_assert (discriminant_index >= 0 | |
1f704f76 | 9387 | && discriminant_index < type->num_fields ()); |
c9317f21 | 9388 | gdb_assert (default_index == -1 |
1f704f76 | 9389 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9390 | |
9c6a1327 | 9391 | /* We have one variant for each non-discriminant field. */ |
1f704f76 | 9392 | int n_variants = type->num_fields () - 1; |
c9317f21 | 9393 | |
9c6a1327 TT |
9394 | variant *variants = new (obstack) variant[n_variants]; |
9395 | int var_idx = 0; | |
9396 | int range_idx = 0; | |
1f704f76 | 9397 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9398 | { |
9399 | if (i == discriminant_index) | |
9400 | continue; | |
c9317f21 | 9401 | |
9c6a1327 TT |
9402 | variants[var_idx].first_field = i; |
9403 | variants[var_idx].last_field = i + 1; | |
9404 | ||
9405 | /* The default field does not need a range, but other fields do. | |
9406 | We skipped the discriminant above. */ | |
9407 | if (i != default_index) | |
9408 | { | |
9409 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9410 | ++range_idx; | |
9411 | } | |
c9317f21 | 9412 | |
9c6a1327 TT |
9413 | ++var_idx; |
9414 | } | |
9415 | ||
9416 | gdb_assert (range_idx == ranges.size ()); | |
9417 | gdb_assert (var_idx == n_variants); | |
9418 | ||
9419 | variant_part *part = new (obstack) variant_part; | |
9420 | part->discriminant_index = discriminant_index; | |
9421 | part->is_unsigned = TYPE_UNSIGNED (TYPE_FIELD_TYPE (type, | |
9422 | discriminant_index)); | |
9423 | part->variants = gdb::array_view<variant> (variants, n_variants); | |
9424 | ||
9425 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9426 | gdb::array_view<variant_part> *prop_value | |
9427 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9428 | |
9c6a1327 TT |
9429 | struct dynamic_prop prop; |
9430 | prop.kind = PROP_VARIANT_PARTS; | |
9431 | prop.data.variant_parts = prop_value; | |
9432 | ||
5c54719c | 9433 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9434 | } |
9435 | ||
9436 | /* Some versions of rustc emitted enums in an unusual way. | |
9437 | ||
9438 | Ordinary enums were emitted as unions. The first element of each | |
9439 | structure in the union was named "RUST$ENUM$DISR". This element | |
9440 | held the discriminant. | |
9441 | ||
9442 | These versions of Rust also implemented the "non-zero" | |
9443 | optimization. When the enum had two values, and one is empty and | |
9444 | the other holds a pointer that cannot be zero, the pointer is used | |
9445 | as the discriminant, with a zero value meaning the empty variant. | |
9446 | Here, the union's first member is of the form | |
9447 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9448 | where the fieldnos are the indices of the fields that should be | |
9449 | traversed in order to find the field (which may be several fields deep) | |
9450 | and the variantname is the name of the variant of the case when the | |
9451 | field is zero. | |
9452 | ||
9453 | This function recognizes whether TYPE is of one of these forms, | |
9454 | and, if so, smashes it to be a variant type. */ | |
9455 | ||
9456 | static void | |
9457 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9458 | { | |
78134374 | 9459 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9460 | |
9461 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9462 | if (type->num_fields () == 0) |
c9317f21 TT |
9463 | return; |
9464 | ||
9465 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9466 | if (type->num_fields () == 1 |
c9317f21 TT |
9467 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9468 | { | |
9469 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9470 | ||
9471 | /* Decode the field name to find the offset of the | |
9472 | discriminant. */ | |
9473 | ULONGEST bit_offset = 0; | |
9474 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9475 | while (name[0] >= '0' && name[0] <= '9') | |
9476 | { | |
9477 | char *tail; | |
9478 | unsigned long index = strtoul (name, &tail, 10); | |
9479 | name = tail; | |
9480 | if (*name != '$' | |
1f704f76 | 9481 | || index >= field_type->num_fields () |
c9317f21 TT |
9482 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9483 | != FIELD_LOC_KIND_BITPOS)) | |
9484 | { | |
b98664d3 | 9485 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9486 | "[in module %s]"), |
9487 | TYPE_FIELD_NAME (type, 0), | |
9488 | objfile_name (objfile)); | |
9489 | return; | |
9490 | } | |
9491 | ++name; | |
9492 | ||
9493 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9494 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9495 | } | |
9496 | ||
9c6a1327 TT |
9497 | /* Smash this type to be a structure type. We have to do this |
9498 | because the type has already been recorded. */ | |
67607e24 | 9499 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9500 | type->set_num_fields (3); |
9c6a1327 | 9501 | /* Save the field we care about. */ |
ceacbf6e | 9502 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9503 | type->set_fields |
9504 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9505 | |
9c6a1327 | 9506 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9507 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9508 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9509 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9510 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9511 | |
9512 | /* The order of fields doesn't really matter, so put the real | |
9513 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9514 | type->field (1) = saved_field; |
9c6a1327 | 9515 | TYPE_FIELD_NAME (type, 1) |
7d93a1e0 | 9516 | = rust_last_path_segment (TYPE_FIELD_TYPE (type, 1)->name ()); |
d0e39ea2 | 9517 | TYPE_FIELD_TYPE (type, 1)->set_name |
7d93a1e0 | 9518 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9519 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9520 | |
9521 | const char *dataless_name | |
7d93a1e0 | 9522 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9523 | name); |
9524 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9525 | dataless_name); | |
5d14b6e5 | 9526 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9527 | /* NAME points into the original discriminant name, which |
9528 | already has the correct lifetime. */ | |
9c6a1327 | 9529 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9530 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9531 | |
9c6a1327 TT |
9532 | /* Indicate that this is a variant type. */ |
9533 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9534 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9535 | } |
77c2dba3 TT |
9536 | /* A union with a single anonymous field is probably an old-style |
9537 | univariant enum. */ | |
1f704f76 | 9538 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9539 | { |
c9317f21 TT |
9540 | /* Smash this type to be a structure type. We have to do this |
9541 | because the type has already been recorded. */ | |
67607e24 | 9542 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9543 | |
9c6a1327 | 9544 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); |
c9317f21 | 9545 | const char *variant_name |
7d93a1e0 | 9546 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9547 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9548 | field_type->set_name |
9549 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9550 | type->name (), variant_name)); |
c9317f21 TT |
9551 | } |
9552 | else | |
9553 | { | |
9554 | struct type *disr_type = nullptr; | |
1f704f76 | 9555 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 TT |
9556 | { |
9557 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9558 | ||
78134374 | 9559 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9560 | { |
9561 | /* All fields of a true enum will be structs. */ | |
9562 | return; | |
9563 | } | |
1f704f76 | 9564 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9565 | { |
9566 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9567 | disr_type = nullptr; |
c9317f21 TT |
9568 | } |
9569 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9570 | "RUST$ENUM$DISR") != 0) | |
9571 | { | |
9572 | /* Not a Rust enum. */ | |
9573 | return; | |
9574 | } | |
9575 | else | |
9576 | { | |
9577 | /* Found one. */ | |
9578 | break; | |
9579 | } | |
9580 | } | |
9581 | ||
9582 | /* If we got here without a discriminant, then it's probably | |
9583 | just a union. */ | |
9584 | if (disr_type == nullptr) | |
9585 | return; | |
9586 | ||
9587 | /* Smash this type to be a structure type. We have to do this | |
9588 | because the type has already been recorded. */ | |
67607e24 | 9589 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9590 | |
9c6a1327 | 9591 | /* Make space for the discriminant field. */ |
ceacbf6e | 9592 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9593 | field *new_fields |
1f704f76 | 9594 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9595 | * sizeof (struct field))); |
80fc5e77 | 9596 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9597 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9598 | type->set_fields (new_fields); |
1f704f76 | 9599 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9600 | |
9601 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9602 | type->field (0) = *disr_field; |
9c6a1327 TT |
9603 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9604 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9605 | |
9606 | /* We need a way to find the correct discriminant given a | |
9607 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9608 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9609 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9610 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9611 | { |
9612 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9613 | { | |
9614 | const char *name | |
9615 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9616 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9617 | } | |
9618 | } | |
9619 | ||
1f704f76 | 9620 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9621 | /* We don't need a range entry for the discriminant, but we do |
9622 | need one for every other field, as there is no default | |
9623 | variant. */ | |
9624 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9625 | discriminant_range, | |
9626 | n_fields - 1); | |
c9317f21 TT |
9627 | /* Skip the discriminant here. */ |
9628 | for (int i = 1; i < n_fields; ++i) | |
9629 | { | |
9630 | /* Find the final word in the name of this variant's type. | |
9631 | That name can be used to look up the correct | |
9632 | discriminant. */ | |
9633 | const char *variant_name | |
7d93a1e0 | 9634 | = rust_last_path_segment (TYPE_FIELD_TYPE (type, i)->name ()); |
c9317f21 TT |
9635 | |
9636 | auto iter = discriminant_map.find (variant_name); | |
9637 | if (iter != discriminant_map.end ()) | |
9c6a1327 TT |
9638 | { |
9639 | ranges[i].low = iter->second; | |
9640 | ranges[i].high = iter->second; | |
9641 | } | |
c9317f21 | 9642 | |
bedda9ac | 9643 | /* Remove the discriminant field, if it exists. */ |
9c6a1327 | 9644 | struct type *sub_type = TYPE_FIELD_TYPE (type, i); |
1f704f76 | 9645 | if (sub_type->num_fields () > 0) |
bedda9ac | 9646 | { |
5e33d5f4 | 9647 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9648 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9649 | } |
9c6a1327 | 9650 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9651 | sub_type->set_name |
9652 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9653 | type->name (), variant_name)); |
c9317f21 | 9654 | } |
9c6a1327 TT |
9655 | |
9656 | /* Indicate that this is a variant type. */ | |
9657 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, | |
9658 | gdb::array_view<discriminant_range> (ranges, | |
9659 | n_fields - 1)); | |
c9317f21 TT |
9660 | } |
9661 | } | |
9662 | ||
9663 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9664 | ||
9665 | static void | |
9666 | rust_union_quirks (struct dwarf2_cu *cu) | |
9667 | { | |
9668 | gdb_assert (cu->language == language_rust); | |
52941706 | 9669 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9670 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9671 | /* We don't need this any more. */ |
9672 | cu->rust_unions.clear (); | |
c9317f21 TT |
9673 | } |
9674 | ||
8adb8487 TT |
9675 | /* See read.h. */ |
9676 | ||
9677 | type_unit_group_unshareable * | |
9678 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9679 | { | |
9680 | auto iter = this->m_type_units.find (tu_group); | |
9681 | if (iter != this->m_type_units.end ()) | |
9682 | return iter->second.get (); | |
9683 | ||
9684 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9685 | type_unit_group_unshareable *result = uniq.get (); | |
9686 | this->m_type_units[tu_group] = std::move (uniq); | |
9687 | return result; | |
9688 | } | |
9689 | ||
e286671b TT |
9690 | struct type * |
9691 | dwarf2_per_objfile::get_type_for_signatured_type | |
9692 | (signatured_type *sig_type) const | |
9693 | { | |
9694 | auto iter = this->m_type_map.find (sig_type); | |
9695 | if (iter == this->m_type_map.end ()) | |
9696 | return nullptr; | |
9697 | ||
9698 | return iter->second; | |
9699 | } | |
9700 | ||
9701 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9702 | (signatured_type *sig_type, struct type *type) | |
9703 | { | |
9704 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9705 | ||
9706 | this->m_type_map[sig_type] = type; | |
9707 | } | |
9708 | ||
95554aad TT |
9709 | /* A helper function for computing the list of all symbol tables |
9710 | included by PER_CU. */ | |
9711 | ||
9712 | static void | |
4c39bc03 | 9713 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9714 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9715 | dwarf2_per_cu_data *per_cu, |
9716 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9717 | struct compunit_symtab *immediate_parent) |
95554aad | 9718 | { |
af758d11 | 9719 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9720 | if (*slot != NULL) |
9721 | { | |
9722 | /* This inclusion and its children have been processed. */ | |
9723 | return; | |
9724 | } | |
9725 | ||
9726 | *slot = per_cu; | |
af758d11 | 9727 | |
95554aad | 9728 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9729 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9730 | if (cust != NULL) |
ec94af83 DE |
9731 | { |
9732 | /* If this is a type unit only add its symbol table if we haven't | |
9733 | seen it yet (type unit per_cu's can share symtabs). */ | |
9734 | if (per_cu->is_debug_types) | |
9735 | { | |
43f3e411 | 9736 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9737 | if (*slot == NULL) |
9738 | { | |
43f3e411 | 9739 | *slot = cust; |
4c39bc03 | 9740 | result->push_back (cust); |
43f3e411 DE |
9741 | if (cust->user == NULL) |
9742 | cust->user = immediate_parent; | |
ec94af83 DE |
9743 | } |
9744 | } | |
9745 | else | |
f9125b6c | 9746 | { |
4c39bc03 | 9747 | result->push_back (cust); |
43f3e411 DE |
9748 | if (cust->user == NULL) |
9749 | cust->user = immediate_parent; | |
f9125b6c | 9750 | } |
ec94af83 | 9751 | } |
95554aad | 9752 | |
ae640021 AB |
9753 | if (!per_cu->imported_symtabs_empty ()) |
9754 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9755 | { | |
9756 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9757 | all_type_symtabs, ptr, per_objfile, |
9758 | cust); | |
ae640021 | 9759 | } |
95554aad TT |
9760 | } |
9761 | ||
43f3e411 | 9762 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9763 | PER_CU. */ |
9764 | ||
9765 | static void | |
43182c09 SM |
9766 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9767 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9768 | { |
f4dc4d17 DE |
9769 | gdb_assert (! per_cu->is_debug_types); |
9770 | ||
ae640021 | 9771 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9772 | { |
ae640021 | 9773 | int len; |
4c39bc03 | 9774 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9775 | htab_t all_children, all_type_symtabs; |
43182c09 | 9776 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9777 | |
9778 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9779 | if (cust == NULL) |
95554aad TT |
9780 | return; |
9781 | ||
9782 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9783 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9784 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9785 | NULL, xcalloc, xfree); | |
95554aad | 9786 | |
ae640021 | 9787 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9788 | { |
9789 | recursively_compute_inclusions (&result_symtabs, all_children, | |
43182c09 SM |
9790 | all_type_symtabs, ptr, per_objfile, |
9791 | cust); | |
ec94af83 | 9792 | } |
95554aad | 9793 | |
ec94af83 | 9794 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9795 | len = result_symtabs.size (); |
43f3e411 | 9796 | cust->includes |
f6e649dd | 9797 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9798 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9799 | memcpy (cust->includes, result_symtabs.data (), |
9800 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9801 | cust->includes[len] = NULL; |
95554aad | 9802 | |
95554aad | 9803 | htab_delete (all_children); |
ec94af83 | 9804 | htab_delete (all_type_symtabs); |
95554aad TT |
9805 | } |
9806 | } | |
9807 | ||
9808 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9809 | read. */ | |
9810 | ||
9811 | static void | |
976ca316 | 9812 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9813 | { |
976ca316 | 9814 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9815 | { |
9816 | if (! iter->is_debug_types) | |
976ca316 | 9817 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 9818 | } |
95554aad | 9819 | |
976ca316 | 9820 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9821 | } |
9822 | ||
8fc0b21d | 9823 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9824 | already been loaded into memory. */ |
9825 | ||
9826 | static void | |
8fc0b21d | 9827 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 9828 | { |
976ca316 SM |
9829 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9830 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 9831 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9832 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9833 | struct compunit_symtab *cust; |
10b3939b | 9834 | CORE_ADDR baseaddr; |
4359dff1 | 9835 | struct block *static_block; |
3e29f34a | 9836 | CORE_ADDR addr; |
10b3939b | 9837 | |
b3b3bada | 9838 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9839 | |
c89b44cd TT |
9840 | /* Clear the list here in case something was left over. */ |
9841 | cu->method_list.clear (); | |
10b3939b | 9842 | |
95554aad TT |
9843 | cu->language = pretend_language; |
9844 | cu->language_defn = language_def (cu->language); | |
9845 | ||
c906108c | 9846 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9847 | process_die (cu->dies, cu); |
c906108c | 9848 | |
a766d390 DE |
9849 | /* For now fudge the Go package. */ |
9850 | if (cu->language == language_go) | |
9851 | fixup_go_packaging (cu); | |
9852 | ||
5f48f8f3 | 9853 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9854 | should be complete, and it should now be safe to compute all of the |
9855 | physnames. */ | |
9856 | compute_delayed_physnames (cu); | |
3da10d80 | 9857 | |
c9317f21 TT |
9858 | if (cu->language == language_rust) |
9859 | rust_union_quirks (cu); | |
9860 | ||
fae299cd DC |
9861 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9862 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9863 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9864 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9865 | |
3e29f34a | 9866 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9867 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9868 | |
9869 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9870 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9871 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9872 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9873 | this comp unit. */ | |
9874 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9875 | ||
c24bdb02 | 9876 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9877 | SECT_OFF_TEXT (objfile), |
9878 | 0); | |
c906108c | 9879 | |
43f3e411 | 9880 | if (cust != NULL) |
c906108c | 9881 | { |
df15bd07 | 9882 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9883 | |
8be455d7 JK |
9884 | /* Set symtab language to language from DW_AT_language. If the |
9885 | compilation is from a C file generated by language preprocessors, do | |
9886 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9887 | if (!(cu->language == language_c |
40e3ad0e | 9888 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9889 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9890 | |
9891 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9892 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9893 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9894 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9895 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9896 | |
9897 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9898 | needed, it would be wrong due to missing DW_AT_producer there. | |
9899 | ||
9900 | Still one can confuse GDB by using non-standard GCC compilation | |
9901 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9902 | */ |
ab260dad | 9903 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9904 | cust->locations_valid = 1; |
e0d00bc7 JK |
9905 | |
9906 | if (gcc_4_minor >= 5) | |
43f3e411 | 9907 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9908 | |
43f3e411 | 9909 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9910 | } |
9291a0cd | 9911 | |
976ca316 | 9912 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 9913 | |
95554aad | 9914 | /* Push it for inclusion processing later. */ |
976ca316 | 9915 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
9916 | |
9917 | /* Not needed any more. */ | |
c24bdb02 | 9918 | cu->reset_builder (); |
f4dc4d17 | 9919 | } |
45cfd468 | 9920 | |
8fc0b21d | 9921 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
9922 | already been loaded into memory. */ |
9923 | ||
9924 | static void | |
8fc0b21d | 9925 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
9926 | enum language pretend_language) |
9927 | { | |
976ca316 SM |
9928 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9929 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 9930 | struct compunit_symtab *cust; |
0186c6a7 DE |
9931 | struct signatured_type *sig_type; |
9932 | ||
8fc0b21d SM |
9933 | gdb_assert (cu->per_cu->is_debug_types); |
9934 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 9935 | |
c89b44cd TT |
9936 | /* Clear the list here in case something was left over. */ |
9937 | cu->method_list.clear (); | |
f4dc4d17 | 9938 | |
f4dc4d17 DE |
9939 | cu->language = pretend_language; |
9940 | cu->language_defn = language_def (cu->language); | |
9941 | ||
9942 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9943 | process_die (cu->dies, cu); | |
9944 | ||
9945 | /* For now fudge the Go package. */ | |
9946 | if (cu->language == language_go) | |
9947 | fixup_go_packaging (cu); | |
9948 | ||
5f48f8f3 | 9949 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9950 | should be complete, and it should now be safe to compute all of the |
9951 | physnames. */ | |
9952 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9953 | |
c9317f21 TT |
9954 | if (cu->language == language_rust) |
9955 | rust_union_quirks (cu); | |
9956 | ||
f4dc4d17 DE |
9957 | /* TUs share symbol tables. |
9958 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9959 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9960 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 9961 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 9962 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 9963 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 9964 | { |
c24bdb02 KS |
9965 | buildsym_compunit *builder = cu->get_builder (); |
9966 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 9967 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 9968 | |
43f3e411 | 9969 | if (cust != NULL) |
f4dc4d17 DE |
9970 | { |
9971 | /* Set symtab language to language from DW_AT_language. If the | |
9972 | compilation is from a C file generated by language preprocessors, | |
9973 | do not set the language if it was already deduced by | |
9974 | start_subfile. */ | |
43f3e411 DE |
9975 | if (!(cu->language == language_c |
9976 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9977 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9978 | } |
9979 | } | |
9980 | else | |
9981 | { | |
c24bdb02 | 9982 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 9983 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
9984 | } |
9985 | ||
976ca316 | 9986 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
9987 | |
9988 | /* Not needed any more. */ | |
c24bdb02 | 9989 | cu->reset_builder (); |
c906108c SS |
9990 | } |
9991 | ||
95554aad TT |
9992 | /* Process an imported unit DIE. */ |
9993 | ||
9994 | static void | |
9995 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9996 | { | |
9997 | struct attribute *attr; | |
9998 | ||
f4dc4d17 DE |
9999 | /* For now we don't handle imported units in type units. */ |
10000 | if (cu->per_cu->is_debug_types) | |
10001 | { | |
10002 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10003 | " supported in type units [in module %s]"), | |
5e22e966 | 10004 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
10005 | } |
10006 | ||
95554aad TT |
10007 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10008 | if (attr != NULL) | |
10009 | { | |
0826b30a | 10010 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 10011 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 10012 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 10013 | dwarf2_per_cu_data *per_cu |
ab432490 | 10014 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 10015 | |
58990295 TV |
10016 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
10017 | into another compilation unit, at root level. Regard this as a hint, | |
10018 | and ignore it. */ | |
10019 | if (die->parent && die->parent->parent == NULL | |
10020 | && per_cu->unit_type == DW_UT_compile | |
10021 | && per_cu->lang == language_cplus) | |
10022 | return; | |
10023 | ||
69d751e3 | 10024 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 10025 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
ab432490 | 10026 | load_full_comp_unit (per_cu, per_objfile, false, cu->language); |
95554aad | 10027 | |
ae640021 | 10028 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10029 | } |
10030 | } | |
10031 | ||
4c8aa72d PA |
10032 | /* RAII object that represents a process_die scope: i.e., |
10033 | starts/finishes processing a DIE. */ | |
10034 | class process_die_scope | |
adde2bff | 10035 | { |
4c8aa72d PA |
10036 | public: |
10037 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10038 | : m_die (die), m_cu (cu) | |
10039 | { | |
10040 | /* We should only be processing DIEs not already in process. */ | |
10041 | gdb_assert (!m_die->in_process); | |
10042 | m_die->in_process = true; | |
10043 | } | |
8c3cb9fa | 10044 | |
4c8aa72d PA |
10045 | ~process_die_scope () |
10046 | { | |
10047 | m_die->in_process = false; | |
10048 | ||
10049 | /* If we're done processing the DIE for the CU that owns the line | |
10050 | header, we don't need the line header anymore. */ | |
10051 | if (m_cu->line_header_die_owner == m_die) | |
10052 | { | |
10053 | delete m_cu->line_header; | |
10054 | m_cu->line_header = NULL; | |
10055 | m_cu->line_header_die_owner = NULL; | |
10056 | } | |
10057 | } | |
10058 | ||
10059 | private: | |
10060 | die_info *m_die; | |
10061 | dwarf2_cu *m_cu; | |
10062 | }; | |
adde2bff | 10063 | |
c906108c SS |
10064 | /* Process a die and its children. */ |
10065 | ||
10066 | static void | |
e7c27a73 | 10067 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10068 | { |
4c8aa72d | 10069 | process_die_scope scope (die, cu); |
adde2bff | 10070 | |
c906108c SS |
10071 | switch (die->tag) |
10072 | { | |
10073 | case DW_TAG_padding: | |
10074 | break; | |
10075 | case DW_TAG_compile_unit: | |
95554aad | 10076 | case DW_TAG_partial_unit: |
e7c27a73 | 10077 | read_file_scope (die, cu); |
c906108c | 10078 | break; |
348e048f DE |
10079 | case DW_TAG_type_unit: |
10080 | read_type_unit_scope (die, cu); | |
10081 | break; | |
c906108c | 10082 | case DW_TAG_subprogram: |
0a4b0913 AB |
10083 | /* Nested subprograms in Fortran get a prefix. */ |
10084 | if (cu->language == language_fortran | |
10085 | && die->parent != NULL | |
10086 | && die->parent->tag == DW_TAG_subprogram) | |
10087 | cu->processing_has_namespace_info = true; | |
10088 | /* Fall through. */ | |
c906108c | 10089 | case DW_TAG_inlined_subroutine: |
edb3359d | 10090 | read_func_scope (die, cu); |
c906108c SS |
10091 | break; |
10092 | case DW_TAG_lexical_block: | |
14898363 L |
10093 | case DW_TAG_try_block: |
10094 | case DW_TAG_catch_block: | |
e7c27a73 | 10095 | read_lexical_block_scope (die, cu); |
c906108c | 10096 | break; |
216f72a1 | 10097 | case DW_TAG_call_site: |
96408a79 SA |
10098 | case DW_TAG_GNU_call_site: |
10099 | read_call_site_scope (die, cu); | |
10100 | break; | |
c906108c | 10101 | case DW_TAG_class_type: |
680b30c7 | 10102 | case DW_TAG_interface_type: |
c906108c SS |
10103 | case DW_TAG_structure_type: |
10104 | case DW_TAG_union_type: | |
134d01f1 | 10105 | process_structure_scope (die, cu); |
c906108c SS |
10106 | break; |
10107 | case DW_TAG_enumeration_type: | |
134d01f1 | 10108 | process_enumeration_scope (die, cu); |
c906108c | 10109 | break; |
134d01f1 | 10110 | |
f792889a DJ |
10111 | /* These dies have a type, but processing them does not create |
10112 | a symbol or recurse to process the children. Therefore we can | |
10113 | read them on-demand through read_type_die. */ | |
c906108c | 10114 | case DW_TAG_subroutine_type: |
72019c9c | 10115 | case DW_TAG_set_type: |
c906108c | 10116 | case DW_TAG_array_type: |
c906108c | 10117 | case DW_TAG_pointer_type: |
c906108c | 10118 | case DW_TAG_ptr_to_member_type: |
c906108c | 10119 | case DW_TAG_reference_type: |
4297a3f0 | 10120 | case DW_TAG_rvalue_reference_type: |
c906108c | 10121 | case DW_TAG_string_type: |
c906108c | 10122 | break; |
134d01f1 | 10123 | |
c906108c | 10124 | case DW_TAG_base_type: |
a02abb62 | 10125 | case DW_TAG_subrange_type: |
cb249c71 | 10126 | case DW_TAG_typedef: |
134d01f1 DJ |
10127 | /* Add a typedef symbol for the type definition, if it has a |
10128 | DW_AT_name. */ | |
f792889a | 10129 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10130 | break; |
c906108c | 10131 | case DW_TAG_common_block: |
e7c27a73 | 10132 | read_common_block (die, cu); |
c906108c SS |
10133 | break; |
10134 | case DW_TAG_common_inclusion: | |
10135 | break; | |
d9fa45fe | 10136 | case DW_TAG_namespace: |
9068261f | 10137 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10138 | read_namespace (die, cu); |
d9fa45fe | 10139 | break; |
5d7cb8df | 10140 | case DW_TAG_module: |
9068261f | 10141 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10142 | read_module (die, cu); |
10143 | break; | |
d9fa45fe | 10144 | case DW_TAG_imported_declaration: |
9068261f | 10145 | cu->processing_has_namespace_info = true; |
74921315 KS |
10146 | if (read_namespace_alias (die, cu)) |
10147 | break; | |
86a73007 TT |
10148 | /* The declaration is not a global namespace alias. */ |
10149 | /* Fall through. */ | |
d9fa45fe | 10150 | case DW_TAG_imported_module: |
9068261f | 10151 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10152 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10153 | || cu->language != language_fortran)) | |
b98664d3 | 10154 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10155 | dwarf_tag_name (die->tag)); |
10156 | read_import_statement (die, cu); | |
d9fa45fe | 10157 | break; |
95554aad TT |
10158 | |
10159 | case DW_TAG_imported_unit: | |
10160 | process_imported_unit_die (die, cu); | |
10161 | break; | |
10162 | ||
71a3c369 TT |
10163 | case DW_TAG_variable: |
10164 | read_variable (die, cu); | |
10165 | break; | |
10166 | ||
c906108c | 10167 | default: |
e7c27a73 | 10168 | new_symbol (die, NULL, cu); |
c906108c SS |
10169 | break; |
10170 | } | |
10171 | } | |
ca69b9e6 DE |
10172 | \f |
10173 | /* DWARF name computation. */ | |
c906108c | 10174 | |
94af9270 KS |
10175 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10176 | needs to have the name of the scope prepended to the name listed in the | |
10177 | die. */ | |
10178 | ||
10179 | static int | |
10180 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10181 | { | |
1c809c68 TT |
10182 | struct attribute *attr; |
10183 | ||
94af9270 KS |
10184 | switch (die->tag) |
10185 | { | |
10186 | case DW_TAG_namespace: | |
10187 | case DW_TAG_typedef: | |
10188 | case DW_TAG_class_type: | |
10189 | case DW_TAG_interface_type: | |
10190 | case DW_TAG_structure_type: | |
10191 | case DW_TAG_union_type: | |
10192 | case DW_TAG_enumeration_type: | |
10193 | case DW_TAG_enumerator: | |
10194 | case DW_TAG_subprogram: | |
08a76f8a | 10195 | case DW_TAG_inlined_subroutine: |
94af9270 | 10196 | case DW_TAG_member: |
74921315 | 10197 | case DW_TAG_imported_declaration: |
94af9270 KS |
10198 | return 1; |
10199 | ||
10200 | case DW_TAG_variable: | |
c2b0a229 | 10201 | case DW_TAG_constant: |
94af9270 KS |
10202 | /* We only need to prefix "globally" visible variables. These include |
10203 | any variable marked with DW_AT_external or any variable that | |
10204 | lives in a namespace. [Variables in anonymous namespaces | |
10205 | require prefixing, but they are not DW_AT_external.] */ | |
10206 | ||
10207 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10208 | { | |
10209 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10210 | |
94af9270 KS |
10211 | return die_needs_namespace (die_specification (die, &spec_cu), |
10212 | spec_cu); | |
10213 | } | |
10214 | ||
1c809c68 | 10215 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10216 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10217 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10218 | return 0; |
10219 | /* A variable in a lexical block of some kind does not need a | |
10220 | namespace, even though in C++ such variables may be external | |
10221 | and have a mangled name. */ | |
10222 | if (die->parent->tag == DW_TAG_lexical_block | |
10223 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10224 | || die->parent->tag == DW_TAG_catch_block |
10225 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10226 | return 0; |
10227 | return 1; | |
94af9270 KS |
10228 | |
10229 | default: | |
10230 | return 0; | |
10231 | } | |
10232 | } | |
10233 | ||
73b9be8b KS |
10234 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10235 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10236 | defined for the given DIE. */ | |
10237 | ||
10238 | static struct attribute * | |
10239 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10240 | { | |
10241 | struct attribute *attr; | |
10242 | ||
10243 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10244 | if (attr == NULL) | |
10245 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10246 | ||
10247 | return attr; | |
10248 | } | |
10249 | ||
10250 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10251 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10252 | defined for the given DIE. */ | |
10253 | ||
10254 | static const char * | |
10255 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10256 | { | |
10257 | const char *linkage_name; | |
10258 | ||
10259 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10260 | if (linkage_name == NULL) | |
10261 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10262 | ||
787de330 TT |
10263 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10264 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10265 | if (cu->language == language_rust && linkage_name != NULL | |
10266 | && strchr (linkage_name, '{') != NULL) | |
10267 | linkage_name = NULL; | |
10268 | ||
73b9be8b KS |
10269 | return linkage_name; |
10270 | } | |
10271 | ||
94af9270 | 10272 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10273 | compute the physname for the object, which include a method's: |
9c37b5ae | 10274 | - formal parameters (C++), |
a766d390 | 10275 | - receiver type (Go), |
a766d390 DE |
10276 | |
10277 | The term "physname" is a bit confusing. | |
10278 | For C++, for example, it is the demangled name. | |
10279 | For Go, for example, it's the mangled name. | |
94af9270 | 10280 | |
af6b7be1 JB |
10281 | For Ada, return the DIE's linkage name rather than the fully qualified |
10282 | name. PHYSNAME is ignored.. | |
10283 | ||
5989a64e | 10284 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10285 | canonicalized. */ |
94af9270 KS |
10286 | |
10287 | static const char * | |
15d034d0 TT |
10288 | dwarf2_compute_name (const char *name, |
10289 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10290 | int physname) |
10291 | { | |
5e22e966 | 10292 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10293 | |
94af9270 KS |
10294 | if (name == NULL) |
10295 | name = dwarf2_name (die, cu); | |
10296 | ||
2ee7123e DE |
10297 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10298 | but otherwise compute it by typename_concat inside GDB. | |
10299 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10300 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10301 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10302 | will set the demangled name to the result of dwarf2_full_name, and it is |
10303 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10304 | if (cu->language == language_ada |
10305 | || (cu->language == language_fortran && physname)) | |
10306 | { | |
10307 | /* For Ada unit, we prefer the linkage name over the name, as | |
10308 | the former contains the exported name, which the user expects | |
10309 | to be able to reference. Ideally, we want the user to be able | |
10310 | to reference this entity using either natural or linkage name, | |
10311 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10312 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10313 | |
2ee7123e DE |
10314 | if (linkage_name != NULL) |
10315 | return linkage_name; | |
f55ee35c JK |
10316 | } |
10317 | ||
94af9270 KS |
10318 | /* These are the only languages we know how to qualify names in. */ |
10319 | if (name != NULL | |
9c37b5ae | 10320 | && (cu->language == language_cplus |
c44af4eb TT |
10321 | || cu->language == language_fortran || cu->language == language_d |
10322 | || cu->language == language_rust)) | |
94af9270 KS |
10323 | { |
10324 | if (die_needs_namespace (die, cu)) | |
10325 | { | |
0d5cff50 | 10326 | const char *prefix; |
34a68019 | 10327 | const char *canonical_name = NULL; |
94af9270 | 10328 | |
d7e74731 PA |
10329 | string_file buf; |
10330 | ||
94af9270 | 10331 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10332 | if (*prefix != '\0') |
10333 | { | |
43816ebc TT |
10334 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10335 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10336 | |
43816ebc | 10337 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10338 | } |
10339 | else | |
d7e74731 | 10340 | buf.puts (name); |
94af9270 | 10341 | |
98bfdba5 PA |
10342 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10343 | as children with DW_TAG_template_type_param or | |
10344 | DW_TAG_value_type_param. If the latter, add them to the name | |
10345 | here. If the name already has template parameters, then | |
10346 | skip this step; some versions of GCC emit both, and | |
10347 | it is more efficient to use the pre-computed name. | |
10348 | ||
10349 | Something to keep in mind about this process: it is very | |
10350 | unlikely, or in some cases downright impossible, to produce | |
10351 | something that will match the mangled name of a function. | |
10352 | If the definition of the function has the same debug info, | |
10353 | we should be able to match up with it anyway. But fallbacks | |
10354 | using the minimal symbol, for instance to find a method | |
10355 | implemented in a stripped copy of libstdc++, will not work. | |
10356 | If we do not have debug info for the definition, we will have to | |
10357 | match them up some other way. | |
10358 | ||
10359 | When we do name matching there is a related problem with function | |
10360 | templates; two instantiated function templates are allowed to | |
10361 | differ only by their return types, which we do not add here. */ | |
10362 | ||
10363 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10364 | { | |
10365 | struct attribute *attr; | |
10366 | struct die_info *child; | |
10367 | int first = 1; | |
10368 | ||
10369 | die->building_fullname = 1; | |
10370 | ||
10371 | for (child = die->child; child != NULL; child = child->sibling) | |
10372 | { | |
10373 | struct type *type; | |
12df843f | 10374 | LONGEST value; |
d521ce57 | 10375 | const gdb_byte *bytes; |
98bfdba5 PA |
10376 | struct dwarf2_locexpr_baton *baton; |
10377 | struct value *v; | |
10378 | ||
10379 | if (child->tag != DW_TAG_template_type_param | |
10380 | && child->tag != DW_TAG_template_value_param) | |
10381 | continue; | |
10382 | ||
10383 | if (first) | |
10384 | { | |
d7e74731 | 10385 | buf.puts ("<"); |
98bfdba5 PA |
10386 | first = 0; |
10387 | } | |
10388 | else | |
d7e74731 | 10389 | buf.puts (", "); |
98bfdba5 PA |
10390 | |
10391 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10392 | if (attr == NULL) | |
10393 | { | |
b98664d3 | 10394 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10395 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10396 | continue; |
10397 | } | |
10398 | type = die_type (child, cu); | |
10399 | ||
10400 | if (child->tag == DW_TAG_template_type_param) | |
10401 | { | |
c1ec8cea TT |
10402 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10403 | &type_print_raw_options); | |
98bfdba5 PA |
10404 | continue; |
10405 | } | |
10406 | ||
10407 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10408 | if (attr == NULL) | |
10409 | { | |
b98664d3 | 10410 | complaint (_("template parameter missing " |
3e43a32a | 10411 | "DW_AT_const_value")); |
d7e74731 | 10412 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10413 | continue; |
10414 | } | |
10415 | ||
10416 | dwarf2_const_value_attr (attr, type, name, | |
10417 | &cu->comp_unit_obstack, cu, | |
10418 | &value, &bytes, &baton); | |
10419 | ||
10420 | if (TYPE_NOSIGN (type)) | |
10421 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10422 | changed, this can use value_print instead. */ | |
d7e74731 | 10423 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10424 | else |
10425 | { | |
10426 | struct value_print_options opts; | |
10427 | ||
10428 | if (baton != NULL) | |
10429 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10430 | baton->data, | |
10431 | baton->size, | |
9f47c707 SM |
10432 | baton->per_cu, |
10433 | baton->per_objfile); | |
98bfdba5 PA |
10434 | else if (bytes != NULL) |
10435 | { | |
10436 | v = allocate_value (type); | |
10437 | memcpy (value_contents_writeable (v), bytes, | |
10438 | TYPE_LENGTH (type)); | |
10439 | } | |
10440 | else | |
10441 | v = value_from_longest (type, value); | |
10442 | ||
3e43a32a MS |
10443 | /* Specify decimal so that we do not depend on |
10444 | the radix. */ | |
98bfdba5 PA |
10445 | get_formatted_print_options (&opts, 'd'); |
10446 | opts.raw = 1; | |
d7e74731 | 10447 | value_print (v, &buf, &opts); |
98bfdba5 | 10448 | release_value (v); |
98bfdba5 PA |
10449 | } |
10450 | } | |
10451 | ||
10452 | die->building_fullname = 0; | |
10453 | ||
10454 | if (!first) | |
10455 | { | |
10456 | /* Close the argument list, with a space if necessary | |
10457 | (nested templates). */ | |
d7e74731 PA |
10458 | if (!buf.empty () && buf.string ().back () == '>') |
10459 | buf.puts (" >"); | |
98bfdba5 | 10460 | else |
d7e74731 | 10461 | buf.puts (">"); |
98bfdba5 PA |
10462 | } |
10463 | } | |
10464 | ||
9c37b5ae | 10465 | /* For C++ methods, append formal parameter type |
94af9270 | 10466 | information, if PHYSNAME. */ |
6e70227d | 10467 | |
94af9270 | 10468 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10469 | && cu->language == language_cplus) |
94af9270 KS |
10470 | { |
10471 | struct type *type = read_type_die (die, cu); | |
10472 | ||
d7e74731 | 10473 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10474 | &type_print_raw_options); |
94af9270 | 10475 | |
9c37b5ae | 10476 | if (cu->language == language_cplus) |
94af9270 | 10477 | { |
60430eff DJ |
10478 | /* Assume that an artificial first parameter is |
10479 | "this", but do not crash if it is not. RealView | |
10480 | marks unnamed (and thus unused) parameters as | |
10481 | artificial; there is no way to differentiate | |
10482 | the two cases. */ | |
1f704f76 | 10483 | if (type->num_fields () > 0 |
94af9270 | 10484 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
78134374 | 10485 | && TYPE_FIELD_TYPE (type, 0)->code () == TYPE_CODE_PTR |
3e43a32a MS |
10486 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10487 | 0)))) | |
d7e74731 | 10488 | buf.puts (" const"); |
94af9270 KS |
10489 | } |
10490 | } | |
10491 | ||
d7e74731 | 10492 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10493 | |
10494 | if (cu->language == language_cplus) | |
34a68019 | 10495 | canonical_name |
322a8516 | 10496 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10497 | objfile); |
34a68019 TT |
10498 | |
10499 | /* If we only computed INTERMEDIATE_NAME, or if | |
10500 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10501 | intern it. */ |
322a8516 | 10502 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10503 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10504 | else |
10505 | name = canonical_name; | |
94af9270 KS |
10506 | } |
10507 | } | |
10508 | ||
10509 | return name; | |
10510 | } | |
10511 | ||
0114d602 DJ |
10512 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10513 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10514 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10515 | not have a name. NAME may either be from a previous call to |
10516 | dwarf2_name or NULL. | |
10517 | ||
9c37b5ae | 10518 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10519 | |
10520 | static const char * | |
15d034d0 | 10521 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10522 | { |
94af9270 KS |
10523 | return dwarf2_compute_name (name, die, cu, 0); |
10524 | } | |
0114d602 | 10525 | |
94af9270 KS |
10526 | /* Construct a physname for the given DIE in CU. NAME may either be |
10527 | from a previous call to dwarf2_name or NULL. The result will be | |
10528 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10529 | name. | |
0114d602 | 10530 | |
9c37b5ae | 10531 | The output string will be canonicalized (if C++). */ |
0114d602 | 10532 | |
94af9270 | 10533 | static const char * |
15d034d0 | 10534 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10535 | { |
5e22e966 | 10536 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10537 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10538 | int need_copy = 1; |
10539 | ||
10540 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10541 | on its own. */ | |
10542 | if (!die_needs_namespace (die, cu)) | |
10543 | return dwarf2_compute_name (name, die, cu, 1); | |
10544 | ||
906bb4c5 TT |
10545 | if (cu->language != language_rust) |
10546 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10547 | |
10548 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10549 | has computed. */ | |
791afaa2 | 10550 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10551 | if (mangled != NULL) |
900e11f9 | 10552 | { |
900e11f9 | 10553 | |
59cc4834 JB |
10554 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10555 | { | |
10556 | /* Do nothing (do not demangle the symbol name). */ | |
10557 | } | |
10558 | else if (cu->language == language_go) | |
a766d390 | 10559 | { |
5e2db402 TT |
10560 | /* This is a lie, but we already lie to the caller new_symbol. |
10561 | new_symbol assumes we return the mangled name. | |
a766d390 | 10562 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10563 | } |
10564 | else | |
10565 | { | |
0eb876f5 JB |
10566 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10567 | their return type. It is easier for GDB users to search | |
10568 | for such functions as `name(params)' than `long name(params)'. | |
10569 | In such case the minimal symbol names do not match the full | |
10570 | symbol names but for template functions there is never a need | |
10571 | to look up their definition from their declaration so | |
10572 | the only disadvantage remains the minimal symbol variant | |
10573 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10574 | demangled.reset (gdb_demangle (mangled, |
10575 | (DMGL_PARAMS | DMGL_ANSI | |
10576 | | DMGL_RET_DROP))); | |
a766d390 | 10577 | } |
900e11f9 | 10578 | if (demangled) |
791afaa2 | 10579 | canon = demangled.get (); |
900e11f9 JK |
10580 | else |
10581 | { | |
10582 | canon = mangled; | |
10583 | need_copy = 0; | |
10584 | } | |
10585 | } | |
10586 | ||
10587 | if (canon == NULL || check_physname) | |
10588 | { | |
10589 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10590 | ||
10591 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10592 | { | |
10593 | /* It may not mean a bug in GDB. The compiler could also | |
10594 | compute DW_AT_linkage_name incorrectly. But in such case | |
10595 | GDB would need to be bug-to-bug compatible. */ | |
10596 | ||
b98664d3 | 10597 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10598 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10599 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10600 | objfile_name (objfile)); |
900e11f9 JK |
10601 | |
10602 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10603 | is available here - over computed PHYSNAME. It is safer | |
10604 | against both buggy GDB and buggy compilers. */ | |
10605 | ||
10606 | retval = canon; | |
10607 | } | |
10608 | else | |
10609 | { | |
10610 | retval = physname; | |
10611 | need_copy = 0; | |
10612 | } | |
10613 | } | |
10614 | else | |
10615 | retval = canon; | |
10616 | ||
10617 | if (need_copy) | |
be1e3d3e | 10618 | retval = objfile->intern (retval); |
900e11f9 | 10619 | |
900e11f9 | 10620 | return retval; |
0114d602 DJ |
10621 | } |
10622 | ||
74921315 KS |
10623 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10624 | a new symbol for it. | |
10625 | ||
10626 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10627 | ||
10628 | static int | |
10629 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10630 | { | |
10631 | struct attribute *attr; | |
10632 | ||
10633 | /* If the die does not have a name, this is not a namespace | |
10634 | alias. */ | |
10635 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10636 | if (attr != NULL) | |
10637 | { | |
10638 | int num; | |
10639 | struct die_info *d = die; | |
10640 | struct dwarf2_cu *imported_cu = cu; | |
10641 | ||
10642 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10643 | keep inspecting DIEs until we hit the underlying import. */ | |
10644 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10645 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10646 | { | |
10647 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10648 | if (attr == NULL) | |
10649 | break; | |
10650 | ||
10651 | d = follow_die_ref (d, attr, &imported_cu); | |
10652 | if (d->tag != DW_TAG_imported_declaration) | |
10653 | break; | |
10654 | } | |
10655 | ||
10656 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10657 | { | |
b98664d3 | 10658 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10659 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10660 | return 0; |
10661 | } | |
10662 | ||
10663 | if (attr != NULL) | |
10664 | { | |
10665 | struct type *type; | |
0826b30a | 10666 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10667 | |
aa66c379 | 10668 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10669 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10670 | { |
10671 | /* This declaration is a global namespace alias. Add | |
10672 | a symbol for it whose type is the aliased namespace. */ | |
10673 | new_symbol (die, type, cu); | |
10674 | return 1; | |
10675 | } | |
10676 | } | |
10677 | } | |
10678 | ||
10679 | return 0; | |
10680 | } | |
10681 | ||
22cee43f | 10682 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10683 | current context for CU. |
22cee43f PMR |
10684 | |
10685 | For Ada, imported declarations can materialize renamings, which *may* be | |
10686 | global. However it is impossible (for now?) in DWARF to distinguish | |
10687 | "external" imported declarations and "static" ones. As all imported | |
10688 | declarations seem to be static in all other languages, make them all CU-wide | |
10689 | global only in Ada. */ | |
10690 | ||
10691 | static struct using_direct ** | |
804d2729 | 10692 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10693 | { |
c24bdb02 KS |
10694 | if (cu->language == language_ada |
10695 | && cu->get_builder ()->outermost_context_p ()) | |
10696 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10697 | else |
c24bdb02 | 10698 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10699 | } |
10700 | ||
27aa8d6a SW |
10701 | /* Read the import statement specified by the given die and record it. */ |
10702 | ||
10703 | static void | |
10704 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10705 | { | |
5e22e966 | 10706 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10707 | struct attribute *import_attr; |
32019081 | 10708 | struct die_info *imported_die, *child_die; |
de4affc9 | 10709 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10710 | const char *imported_name; |
794684b6 | 10711 | const char *imported_name_prefix; |
13387711 SW |
10712 | const char *canonical_name; |
10713 | const char *import_alias; | |
10714 | const char *imported_declaration = NULL; | |
794684b6 | 10715 | const char *import_prefix; |
eb1e02fd | 10716 | std::vector<const char *> excludes; |
13387711 | 10717 | |
27aa8d6a SW |
10718 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10719 | if (import_attr == NULL) | |
10720 | { | |
b98664d3 | 10721 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10722 | dwarf_tag_name (die->tag)); |
10723 | return; | |
10724 | } | |
10725 | ||
de4affc9 CC |
10726 | imported_cu = cu; |
10727 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10728 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10729 | if (imported_name == NULL) |
10730 | { | |
10731 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10732 | ||
10733 | The import in the following code: | |
10734 | namespace A | |
10735 | { | |
10736 | typedef int B; | |
10737 | } | |
10738 | ||
10739 | int main () | |
10740 | { | |
10741 | using A::B; | |
10742 | B b; | |
10743 | return b; | |
10744 | } | |
10745 | ||
10746 | ... | |
10747 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10748 | <52> DW_AT_decl_file : 1 | |
10749 | <53> DW_AT_decl_line : 6 | |
10750 | <54> DW_AT_import : <0x75> | |
10751 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10752 | <59> DW_AT_name : B | |
10753 | <5b> DW_AT_decl_file : 1 | |
10754 | <5c> DW_AT_decl_line : 2 | |
10755 | <5d> DW_AT_type : <0x6e> | |
10756 | ... | |
10757 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10758 | <76> DW_AT_byte_size : 4 | |
10759 | <77> DW_AT_encoding : 5 (signed) | |
10760 | ||
10761 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10762 | This case will be ignored until the gcc bug is fixed. */ | |
10763 | return; | |
10764 | } | |
10765 | ||
82856980 SW |
10766 | /* Figure out the local name after import. */ |
10767 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10768 | |
794684b6 SW |
10769 | /* Figure out where the statement is being imported to. */ |
10770 | import_prefix = determine_prefix (die, cu); | |
10771 | ||
10772 | /* Figure out what the scope of the imported die is and prepend it | |
10773 | to the name of the imported die. */ | |
de4affc9 | 10774 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10775 | |
f55ee35c JK |
10776 | if (imported_die->tag != DW_TAG_namespace |
10777 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10778 | { |
13387711 SW |
10779 | imported_declaration = imported_name; |
10780 | canonical_name = imported_name_prefix; | |
794684b6 | 10781 | } |
13387711 | 10782 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10783 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10784 | imported_name_prefix, |
10785 | (cu->language == language_d ? "." : "::"), | |
10786 | imported_name, (char *) NULL); | |
13387711 SW |
10787 | else |
10788 | canonical_name = imported_name; | |
794684b6 | 10789 | |
32019081 JK |
10790 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10791 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10792 | child_die = child_die->sibling) |
32019081 JK |
10793 | { |
10794 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10795 | represented by an imported module entry with an import attribute | |
10796 | referring to the module and owned entries corresponding to those | |
10797 | entities that are renamed as part of being imported. */ | |
10798 | ||
10799 | if (child_die->tag != DW_TAG_imported_declaration) | |
10800 | { | |
b98664d3 | 10801 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10802 | "- DIE at %s [in module %s]"), |
10803 | sect_offset_str (child_die->sect_off), | |
10804 | objfile_name (objfile)); | |
32019081 JK |
10805 | continue; |
10806 | } | |
10807 | ||
10808 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10809 | if (import_attr == NULL) | |
10810 | { | |
b98664d3 | 10811 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10812 | dwarf_tag_name (child_die->tag)); |
10813 | continue; | |
10814 | } | |
10815 | ||
10816 | imported_cu = cu; | |
10817 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10818 | &imported_cu); | |
10819 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10820 | if (imported_name == NULL) | |
10821 | { | |
b98664d3 | 10822 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10823 | "imported name - DIE at %s [in module %s]"), |
10824 | sect_offset_str (child_die->sect_off), | |
10825 | objfile_name (objfile)); | |
32019081 JK |
10826 | continue; |
10827 | } | |
10828 | ||
eb1e02fd | 10829 | excludes.push_back (imported_name); |
32019081 JK |
10830 | |
10831 | process_die (child_die, cu); | |
10832 | } | |
10833 | ||
804d2729 | 10834 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10835 | import_prefix, |
10836 | canonical_name, | |
10837 | import_alias, | |
10838 | imported_declaration, | |
10839 | excludes, | |
10840 | 0, | |
10841 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10842 | } |
10843 | ||
5230b05a WT |
10844 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10845 | types, but gives them a size of zero. Starting with version 14, | |
10846 | ICC is compatible with GCC. */ | |
10847 | ||
9068261f | 10848 | static bool |
5230b05a WT |
10849 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10850 | { | |
10851 | if (!cu->checked_producer) | |
10852 | check_producer (cu); | |
10853 | ||
10854 | return cu->producer_is_icc_lt_14; | |
10855 | } | |
10856 | ||
eb77c9df AB |
10857 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10858 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10859 | which says that void functions should not have a DW_AT_type. */ | |
10860 | ||
10861 | static bool | |
10862 | producer_is_icc (struct dwarf2_cu *cu) | |
10863 | { | |
10864 | if (!cu->checked_producer) | |
10865 | check_producer (cu); | |
10866 | ||
10867 | return cu->producer_is_icc; | |
10868 | } | |
10869 | ||
1b80a9fa JK |
10870 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10871 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10872 | this, it was first present in GCC release 4.3.0. */ | |
10873 | ||
9068261f | 10874 | static bool |
1b80a9fa JK |
10875 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10876 | { | |
10877 | if (!cu->checked_producer) | |
10878 | check_producer (cu); | |
10879 | ||
10880 | return cu->producer_is_gcc_lt_4_3; | |
10881 | } | |
10882 | ||
d721ba37 PA |
10883 | static file_and_directory |
10884 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10885 | { |
d721ba37 PA |
10886 | file_and_directory res; |
10887 | ||
9291a0cd TT |
10888 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10889 | is not a source language identifier. */ | |
d721ba37 PA |
10890 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10891 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10892 | |
d721ba37 PA |
10893 | if (res.comp_dir == NULL |
10894 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10895 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10896 | { |
d721ba37 PA |
10897 | res.comp_dir_storage = ldirname (res.name); |
10898 | if (!res.comp_dir_storage.empty ()) | |
10899 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10900 | } |
d721ba37 | 10901 | if (res.comp_dir != NULL) |
9291a0cd TT |
10902 | { |
10903 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10904 | directory, get rid of it. */ | |
d721ba37 | 10905 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10906 | |
d721ba37 PA |
10907 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10908 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10909 | } |
10910 | ||
d721ba37 PA |
10911 | if (res.name == NULL) |
10912 | res.name = "<unknown>"; | |
10913 | ||
10914 | return res; | |
9291a0cd TT |
10915 | } |
10916 | ||
f4dc4d17 DE |
10917 | /* Handle DW_AT_stmt_list for a compilation unit. |
10918 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10919 | COMP_DIR is the compilation directory. LOWPC is passed to |
10920 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10921 | |
10922 | static void | |
10923 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10924 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10925 | { |
976ca316 | 10926 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 10927 | struct attribute *attr; |
527f3840 JK |
10928 | struct line_header line_header_local; |
10929 | hashval_t line_header_local_hash; | |
527f3840 JK |
10930 | void **slot; |
10931 | int decode_mapping; | |
2ab95328 | 10932 | |
f4dc4d17 DE |
10933 | gdb_assert (! cu->per_cu->is_debug_types); |
10934 | ||
2ab95328 | 10935 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
10936 | if (attr == NULL) |
10937 | return; | |
10938 | ||
9c541725 | 10939 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
10940 | |
10941 | /* The line header hash table is only created if needed (it exists to | |
10942 | prevent redundant reading of the line table for partial_units). | |
10943 | If we're given a partial_unit, we'll need it. If we're given a | |
10944 | compile_unit, then use the line header hash table if it's already | |
10945 | created, but don't create one just yet. */ | |
10946 | ||
976ca316 | 10947 | if (per_objfile->line_header_hash == NULL |
527f3840 | 10948 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 10949 | { |
976ca316 | 10950 | per_objfile->line_header_hash |
d15acc42 TT |
10951 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10952 | line_header_eq_voidp, | |
10953 | free_line_header_voidp, | |
10954 | xcalloc, xfree)); | |
527f3840 | 10955 | } |
2ab95328 | 10956 | |
9c541725 | 10957 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10958 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10959 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 10960 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 10961 | { |
976ca316 | 10962 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
10963 | &line_header_local, |
10964 | line_header_local_hash, NO_INSERT); | |
10965 | ||
10966 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10967 | is not present in *SLOT (since if there is something in *SLOT then | |
10968 | it will be for a partial_unit). */ | |
10969 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10970 | { |
527f3840 | 10971 | gdb_assert (*slot != NULL); |
9a3c8263 | 10972 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10973 | return; |
dee91e82 | 10974 | } |
2ab95328 | 10975 | } |
527f3840 JK |
10976 | |
10977 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10978 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10979 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10980 | if (lh == NULL) | |
527f3840 | 10981 | return; |
4c8aa72d PA |
10982 | |
10983 | cu->line_header = lh.release (); | |
10984 | cu->line_header_die_owner = die; | |
527f3840 | 10985 | |
976ca316 | 10986 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
10987 | slot = NULL; |
10988 | else | |
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, INSERT); | |
10993 | gdb_assert (slot != NULL); | |
10994 | } | |
10995 | if (slot != NULL && *slot == NULL) | |
10996 | { | |
10997 | /* This newly decoded line number information unit will be owned | |
10998 | by line_header_hash hash table. */ | |
10999 | *slot = cu->line_header; | |
4c8aa72d | 11000 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11001 | } |
11002 | else | |
11003 | { | |
11004 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11005 | may be already used by multiple CUs. Create only temporary decoded | |
11006 | line_header for this CU - it may happen at most once for each line | |
11007 | number information unit. And if we're not using line_header_hash | |
11008 | then this is what we want as well. */ | |
11009 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11010 | } |
11011 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11012 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11013 | decode_mapping); | |
fff8551c | 11014 | |
2ab95328 TT |
11015 | } |
11016 | ||
95554aad | 11017 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11018 | |
c906108c | 11019 | static void |
e7c27a73 | 11020 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11021 | { |
976ca316 SM |
11022 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
11023 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 11024 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 11025 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11026 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11027 | struct attribute *attr; | |
c906108c | 11028 | struct die_info *child_die; |
e142c38c | 11029 | CORE_ADDR baseaddr; |
6e70227d | 11030 | |
380618d6 | 11031 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11032 | baseaddr = objfile->text_section_offset (); |
c906108c | 11033 | |
fae299cd | 11034 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11035 | |
11036 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11037 | from finish_block. */ | |
2acceee2 | 11038 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11039 | lowpc = highpc; |
3e29f34a | 11040 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11041 | |
d721ba37 | 11042 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11043 | |
f4b8a18d KW |
11044 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11045 | standardised yet. As a workaround for the language detection we fall | |
11046 | back to the DW_AT_producer string. */ | |
11047 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11048 | cu->language = language_opencl; | |
11049 | ||
3019eac3 DE |
11050 | /* Similar hack for Go. */ |
11051 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11052 | set_cu_language (DW_LANG_Go, cu); | |
11053 | ||
c24bdb02 | 11054 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11055 | |
11056 | /* Decode line number information if present. We do this before | |
11057 | processing child DIEs, so that the line header table is available | |
11058 | for DW_AT_decl_file. */ | |
d721ba37 | 11059 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11060 | |
11061 | /* Process all dies in compilation unit. */ | |
11062 | if (die->child != NULL) | |
11063 | { | |
11064 | child_die = die->child; | |
11065 | while (child_die && child_die->tag) | |
11066 | { | |
11067 | process_die (child_die, cu); | |
436c571c | 11068 | child_die = child_die->sibling; |
3019eac3 DE |
11069 | } |
11070 | } | |
11071 | ||
11072 | /* Decode macro information, if present. Dwarf 2 macro information | |
11073 | refers to information in the line number info statement program | |
11074 | header, so we can only read it if we've read the header | |
11075 | successfully. */ | |
0af92d60 JK |
11076 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11077 | if (attr == NULL) | |
11078 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11079 | if (attr && cu->line_header) |
11080 | { | |
11081 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11082 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11083 | |
43f3e411 | 11084 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11085 | } |
11086 | else | |
11087 | { | |
11088 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11089 | if (attr && cu->line_header) | |
11090 | { | |
11091 | unsigned int macro_offset = DW_UNSND (attr); | |
11092 | ||
43f3e411 | 11093 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11094 | } |
11095 | } | |
3019eac3 DE |
11096 | } |
11097 | ||
c24bdb02 KS |
11098 | void |
11099 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11100 | { |
f4dc4d17 DE |
11101 | struct type_unit_group *tu_group; |
11102 | int first_time; | |
3019eac3 | 11103 | struct attribute *attr; |
9c541725 | 11104 | unsigned int i; |
0186c6a7 | 11105 | struct signatured_type *sig_type; |
3019eac3 | 11106 | |
f4dc4d17 | 11107 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11108 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11109 | |
c24bdb02 | 11110 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11111 | |
f4dc4d17 | 11112 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11113 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11114 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11115 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11116 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11117 | |
11118 | /* If we've already processed this stmt_list there's no real need to | |
11119 | do it again, we could fake it and just recreate the part we need | |
11120 | (file name,index -> symtab mapping). If data shows this optimization | |
11121 | is useful we can do it then. */ | |
8adb8487 TT |
11122 | type_unit_group_unshareable *tug_unshare |
11123 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11124 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11125 | |
11126 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11127 | debug info. */ | |
fff8551c | 11128 | line_header_up lh; |
f4dc4d17 | 11129 | if (attr != NULL) |
3019eac3 | 11130 | { |
9c541725 | 11131 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11132 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11133 | } |
11134 | if (lh == NULL) | |
11135 | { | |
11136 | if (first_time) | |
c24bdb02 | 11137 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11138 | else |
11139 | { | |
8adb8487 | 11140 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11141 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11142 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11143 | m_builder.reset (new struct buildsym_compunit |
11144 | (COMPUNIT_OBJFILE (cust), "", | |
11145 | COMPUNIT_DIRNAME (cust), | |
11146 | compunit_language (cust), | |
11147 | 0, cust)); | |
770479f2 | 11148 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11149 | } |
f4dc4d17 | 11150 | return; |
3019eac3 DE |
11151 | } |
11152 | ||
c24bdb02 KS |
11153 | line_header = lh.release (); |
11154 | line_header_die_owner = die; | |
3019eac3 | 11155 | |
f4dc4d17 DE |
11156 | if (first_time) |
11157 | { | |
c24bdb02 | 11158 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11159 | |
1fd60fc0 DE |
11160 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11161 | still initializing it, and our caller (a few levels up) | |
11162 | process_full_type_unit still needs to know if this is the first | |
11163 | time. */ | |
11164 | ||
8adb8487 | 11165 | tug_unshare->symtabs |
4ac93832 TT |
11166 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11167 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11168 | |
7ba99d21 AT |
11169 | auto &file_names = line_header->file_names (); |
11170 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11171 | { |
7ba99d21 | 11172 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11173 | dwarf2_start_subfile (this, fe.name, |
11174 | fe.include_dir (line_header)); | |
11175 | buildsym_compunit *b = get_builder (); | |
11176 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11177 | { |
4c8aa72d PA |
11178 | /* NOTE: start_subfile will recognize when it's been |
11179 | passed a file it has already seen. So we can't | |
11180 | assume there's a simple mapping from | |
11181 | cu->line_header->file_names to subfiles, plus | |
11182 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11183 | b->get_current_subfile ()->symtab |
11184 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11185 | } |
11186 | ||
c24bdb02 | 11187 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11188 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11189 | } |
11190 | } | |
11191 | else | |
3019eac3 | 11192 | { |
c24bdb02 | 11193 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11194 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11195 | m_builder.reset (new struct buildsym_compunit |
11196 | (COMPUNIT_OBJFILE (cust), "", | |
11197 | COMPUNIT_DIRNAME (cust), | |
11198 | compunit_language (cust), | |
11199 | 0, cust)); | |
770479f2 | 11200 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11201 | |
7ba99d21 AT |
11202 | auto &file_names = line_header->file_names (); |
11203 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11204 | { |
7ba99d21 | 11205 | file_entry &fe = file_names[i]; |
8adb8487 | 11206 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11207 | } |
3019eac3 DE |
11208 | } |
11209 | ||
f4dc4d17 DE |
11210 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11211 | so they don't have a "real" (so to speak) symtab anyway. | |
11212 | There is later code that will assign the main symtab to all symbols | |
11213 | that don't have one. We need to handle the case of a symbol with a | |
11214 | missing symtab (DW_AT_decl_file) anyway. */ | |
11215 | } | |
3019eac3 | 11216 | |
f4dc4d17 DE |
11217 | /* Process DW_TAG_type_unit. |
11218 | For TUs we want to skip the first top level sibling if it's not the | |
11219 | actual type being defined by this TU. In this case the first top | |
11220 | level sibling is there to provide context only. */ | |
3019eac3 | 11221 | |
f4dc4d17 DE |
11222 | static void |
11223 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11224 | { | |
11225 | struct die_info *child_die; | |
3019eac3 | 11226 | |
f4dc4d17 DE |
11227 | prepare_one_comp_unit (cu, die, language_minimal); |
11228 | ||
11229 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11230 | We do this before processing child DIEs, so that the line header table | |
11231 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11232 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11233 | |
11234 | if (die->child != NULL) | |
11235 | { | |
11236 | child_die = die->child; | |
11237 | while (child_die && child_die->tag) | |
11238 | { | |
11239 | process_die (child_die, cu); | |
436c571c | 11240 | child_die = child_die->sibling; |
f4dc4d17 DE |
11241 | } |
11242 | } | |
3019eac3 DE |
11243 | } |
11244 | \f | |
80626a55 DE |
11245 | /* DWO/DWP files. |
11246 | ||
11247 | http://gcc.gnu.org/wiki/DebugFission | |
11248 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11249 | ||
11250 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11251 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11252 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11253 | |
11254 | static hashval_t | |
11255 | hash_dwo_file (const void *item) | |
11256 | { | |
9a3c8263 | 11257 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11258 | hashval_t hash; |
3019eac3 | 11259 | |
a2ce51a0 DE |
11260 | hash = htab_hash_string (dwo_file->dwo_name); |
11261 | if (dwo_file->comp_dir != NULL) | |
11262 | hash += htab_hash_string (dwo_file->comp_dir); | |
11263 | return hash; | |
3019eac3 DE |
11264 | } |
11265 | ||
11266 | static int | |
11267 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11268 | { | |
9a3c8263 SM |
11269 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11270 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11271 | |
a2ce51a0 DE |
11272 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11273 | return 0; | |
11274 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11275 | return lhs->comp_dir == rhs->comp_dir; | |
11276 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11277 | } |
11278 | ||
11279 | /* Allocate a hash table for DWO files. */ | |
11280 | ||
51ac9db5 | 11281 | static htab_up |
298e9637 | 11282 | allocate_dwo_file_hash_table () |
3019eac3 | 11283 | { |
51ac9db5 SM |
11284 | auto delete_dwo_file = [] (void *item) |
11285 | { | |
11286 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11287 | ||
11288 | delete dwo_file; | |
11289 | }; | |
11290 | ||
bc68fb19 TT |
11291 | return htab_up (htab_create_alloc (41, |
11292 | hash_dwo_file, | |
11293 | eq_dwo_file, | |
11294 | delete_dwo_file, | |
11295 | xcalloc, xfree)); | |
3019eac3 DE |
11296 | } |
11297 | ||
80626a55 DE |
11298 | /* Lookup DWO file DWO_NAME. */ |
11299 | ||
11300 | static void ** | |
976ca316 | 11301 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11302 | const char *dwo_name, |
11303 | const char *comp_dir) | |
80626a55 DE |
11304 | { |
11305 | struct dwo_file find_entry; | |
11306 | void **slot; | |
11307 | ||
976ca316 SM |
11308 | if (per_objfile->per_bfd->dwo_files == NULL) |
11309 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11310 | |
0ac5b59e DE |
11311 | find_entry.dwo_name = dwo_name; |
11312 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11313 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11314 | INSERT); |
80626a55 DE |
11315 | |
11316 | return slot; | |
11317 | } | |
11318 | ||
3019eac3 DE |
11319 | static hashval_t |
11320 | hash_dwo_unit (const void *item) | |
11321 | { | |
9a3c8263 | 11322 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11323 | |
11324 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11325 | return dwo_unit->signature; | |
11326 | } | |
11327 | ||
11328 | static int | |
11329 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11330 | { | |
9a3c8263 SM |
11331 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11332 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11333 | |
11334 | /* The signature is assumed to be unique within the DWO file. | |
11335 | So while object file CU dwo_id's always have the value zero, | |
11336 | that's OK, assuming each object file DWO file has only one CU, | |
11337 | and that's the rule for now. */ | |
11338 | return lhs->signature == rhs->signature; | |
11339 | } | |
11340 | ||
11341 | /* Allocate a hash table for DWO CUs,TUs. | |
11342 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11343 | ||
b0b6a987 | 11344 | static htab_up |
298e9637 | 11345 | allocate_dwo_unit_table () |
3019eac3 DE |
11346 | { |
11347 | /* Start out with a pretty small number. | |
11348 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11349 | return htab_up (htab_create_alloc (3, |
11350 | hash_dwo_unit, | |
11351 | eq_dwo_unit, | |
11352 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11353 | } |
11354 | ||
19c3d4c9 | 11355 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11356 | |
11357 | static void | |
19c3d4c9 DE |
11358 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11359 | const gdb_byte *info_ptr, | |
11360 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11361 | struct dwo_file *dwo_file, |
11362 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11363 | { |
11364 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11365 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11366 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11367 | |
a084a2a6 AT |
11368 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11369 | if (!signature.has_value ()) | |
3019eac3 | 11370 | { |
b98664d3 | 11371 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11372 | " its dwo_id [in module %s]"), |
9d8780f0 | 11373 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11374 | return; |
11375 | } | |
11376 | ||
3019eac3 | 11377 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11378 | dwo_unit->signature = *signature; |
8a0459fd | 11379 | dwo_unit->section = section; |
9c541725 | 11380 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11381 | dwo_unit->length = cu->per_cu->length; |
11382 | ||
b4f54984 | 11383 | if (dwarf_read_debug) |
9d8780f0 SM |
11384 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11385 | sect_offset_str (sect_off), | |
9c541725 | 11386 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11387 | } |
11388 | ||
33c5cd75 | 11389 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11390 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11391 | |
33c5cd75 | 11392 | static void |
976ca316 | 11393 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11394 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11395 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11396 | { |
976ca316 SM |
11397 | struct objfile *objfile = per_objfile->objfile; |
11398 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11399 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11400 | |
96b79293 | 11401 | section.read (objfile); |
33c5cd75 | 11402 | info_ptr = section.buffer; |
3019eac3 DE |
11403 | |
11404 | if (info_ptr == NULL) | |
33c5cd75 | 11405 | return; |
3019eac3 | 11406 | |
b4f54984 | 11407 | if (dwarf_read_debug) |
19c3d4c9 DE |
11408 | { |
11409 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11410 | section.get_name (), |
11411 | section.get_file_name ()); | |
19c3d4c9 | 11412 | } |
3019eac3 | 11413 | |
33c5cd75 | 11414 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11415 | while (info_ptr < end_ptr) |
11416 | { | |
11417 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11418 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11419 | struct dwo_unit *dwo_unit; |
11420 | void **slot; | |
11421 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11422 | |
11423 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11424 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11425 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11426 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11427 | per_cu.section = §ion; | |
11428 | ||
976ca316 | 11429 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11430 | if (!reader.dummy_p) |
11431 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11432 | &dwo_file, &read_unit); |
33c5cd75 DB |
11433 | info_ptr += per_cu.length; |
11434 | ||
11435 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11436 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11437 | continue; |
3019eac3 | 11438 | |
33c5cd75 | 11439 | if (cus_htab == NULL) |
298e9637 | 11440 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11441 | |
1859c670 | 11442 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11443 | struct dwo_unit); |
c0ab21c2 | 11444 | *dwo_unit = read_unit; |
b0b6a987 | 11445 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11446 | gdb_assert (slot != NULL); |
11447 | if (*slot != NULL) | |
19c3d4c9 | 11448 | { |
33c5cd75 DB |
11449 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11450 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11451 | |
b98664d3 | 11452 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11453 | " the entry at offset %s, signature %s"), |
11454 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11455 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11456 | } |
33c5cd75 | 11457 | *slot = (void *)dwo_unit; |
3019eac3 | 11458 | } |
3019eac3 DE |
11459 | } |
11460 | ||
80626a55 DE |
11461 | /* DWP file .debug_{cu,tu}_index section format: |
11462 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11463 | ||
d2415c6c DE |
11464 | DWP Version 1: |
11465 | ||
80626a55 DE |
11466 | Both index sections have the same format, and serve to map a 64-bit |
11467 | signature to a set of section numbers. Each section begins with a header, | |
11468 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11469 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11470 | aligned at 8-byte boundaries in the file. | |
11471 | ||
d2415c6c DE |
11472 | The index section header consists of: |
11473 | ||
11474 | V, 32 bit version number | |
11475 | -, 32 bits unused | |
11476 | N, 32 bit number of compilation units or type units in the index | |
11477 | M, 32 bit number of slots in the hash table | |
80626a55 | 11478 | |
d2415c6c | 11479 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11480 | |
d2415c6c DE |
11481 | The hash table begins at offset 16 in the section, and consists of an array |
11482 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11483 | order of the application binary). Unused slots in the hash table are 0. | |
11484 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11485 | |
d2415c6c DE |
11486 | The parallel table begins immediately after the hash table |
11487 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11488 | array of 32-bit indexes (using the byte order of the application binary), | |
11489 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11490 | table contains a 32-bit index into the pool of section numbers. For unused | |
11491 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11492 | |
73869dc2 DE |
11493 | The pool of section numbers begins immediately following the hash table |
11494 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11495 | section numbers consists of an array of 32-bit words (using the byte order | |
11496 | of the application binary). Each item in the array is indexed starting | |
11497 | from 0. The hash table entry provides the index of the first section | |
11498 | number in the set. Additional section numbers in the set follow, and the | |
11499 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11500 | ||
11501 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11502 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11503 | be the second entry. Other members of the set may follow in any order. | |
11504 | ||
11505 | --- | |
11506 | ||
11507 | DWP Version 2: | |
11508 | ||
11509 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11510 | and the entries in the index tables are now offsets into these sections. | |
11511 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11512 | section. | |
11513 | ||
11514 | Index Section Contents: | |
11515 | Header | |
11516 | Hash Table of Signatures dwp_hash_table.hash_table | |
11517 | Parallel Table of Indices dwp_hash_table.unit_table | |
11518 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11519 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11520 | ||
11521 | The index section header consists of: | |
11522 | ||
11523 | V, 32 bit version number | |
11524 | L, 32 bit number of columns in the table of section offsets | |
11525 | N, 32 bit number of compilation units or type units in the index | |
11526 | M, 32 bit number of slots in the hash table | |
11527 | ||
11528 | Numbers are recorded using the byte order of the application binary. | |
11529 | ||
11530 | The hash table has the same format as version 1. | |
11531 | The parallel table of indices has the same format as version 1, | |
11532 | except that the entries are origin-1 indices into the table of sections | |
11533 | offsets and the table of section sizes. | |
11534 | ||
11535 | The table of offsets begins immediately following the parallel table | |
11536 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11537 | a two-dimensional array of 32-bit words (using the byte order of the | |
11538 | application binary), with L columns and N+1 rows, in row-major order. | |
11539 | Each row in the array is indexed starting from 0. The first row provides | |
11540 | a key to the remaining rows: each column in this row provides an identifier | |
11541 | for a debug section, and the offsets in the same column of subsequent rows | |
11542 | refer to that section. The section identifiers are: | |
11543 | ||
11544 | DW_SECT_INFO 1 .debug_info.dwo | |
11545 | DW_SECT_TYPES 2 .debug_types.dwo | |
11546 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11547 | DW_SECT_LINE 4 .debug_line.dwo | |
11548 | DW_SECT_LOC 5 .debug_loc.dwo | |
11549 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11550 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11551 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11552 | ||
11553 | The offsets provided by the CU and TU index sections are the base offsets | |
11554 | for the contributions made by each CU or TU to the corresponding section | |
11555 | in the package file. Each CU and TU header contains an abbrev_offset | |
11556 | field, used to find the abbreviations table for that CU or TU within the | |
11557 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11558 | be interpreted as relative to the base offset given in the index section. | |
11559 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11560 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11561 | and offsets into other debug sections obtained from DWARF attributes should | |
11562 | also be interpreted as relative to the corresponding base offset. | |
11563 | ||
11564 | The table of sizes begins immediately following the table of offsets. | |
11565 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11566 | with L columns and N rows, in row-major order. Each row in the array is | |
11567 | indexed starting from 1 (row 0 is shared by the two tables). | |
11568 | ||
11569 | --- | |
11570 | ||
11571 | Hash table lookup is handled the same in version 1 and 2: | |
11572 | ||
11573 | We assume that N and M will not exceed 2^32 - 1. | |
11574 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11575 | ||
d2415c6c DE |
11576 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11577 | in the hash table is located as follows: | |
80626a55 | 11578 | |
d2415c6c DE |
11579 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11580 | the low-order k bits all set to 1. | |
80626a55 | 11581 | |
d2415c6c | 11582 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11583 | |
d2415c6c DE |
11584 | 3) If the hash table entry at index H matches the signature, use that |
11585 | entry. If the hash table entry at index H is unused (all zeroes), | |
11586 | terminate the search: the signature is not present in the table. | |
80626a55 | 11587 | |
d2415c6c | 11588 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11589 | |
d2415c6c | 11590 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11591 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11592 | |
11593 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11594 | .debug_{info,types}.dwo in DWP_FILE. | |
11595 | Returns NULL if there isn't one. | |
11596 | Note: This function processes DWP files only, not DWO files. */ | |
11597 | ||
11598 | static struct dwp_hash_table * | |
976ca316 | 11599 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11600 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11601 | { |
976ca316 | 11602 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11603 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11604 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11605 | struct dwarf2_section_info *index; |
73869dc2 | 11606 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11607 | struct dwp_hash_table *htab; |
11608 | ||
11609 | if (is_debug_types) | |
11610 | index = &dwp_file->sections.tu_index; | |
11611 | else | |
11612 | index = &dwp_file->sections.cu_index; | |
11613 | ||
96b79293 | 11614 | if (index->empty ()) |
80626a55 | 11615 | return NULL; |
96b79293 | 11616 | index->read (objfile); |
80626a55 DE |
11617 | |
11618 | index_ptr = index->buffer; | |
11619 | index_end = index_ptr + index->size; | |
11620 | ||
11621 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11622 | index_ptr += 4; |
11623 | if (version == 2) | |
11624 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11625 | else | |
11626 | nr_columns = 0; | |
11627 | index_ptr += 4; | |
80626a55 DE |
11628 | nr_units = read_4_bytes (dbfd, index_ptr); |
11629 | index_ptr += 4; | |
11630 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11631 | index_ptr += 4; | |
11632 | ||
73869dc2 | 11633 | if (version != 1 && version != 2) |
80626a55 | 11634 | { |
21aa081e | 11635 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11636 | " [in module %s]"), |
21aa081e | 11637 | pulongest (version), dwp_file->name); |
80626a55 DE |
11638 | } |
11639 | if (nr_slots != (nr_slots & -nr_slots)) | |
11640 | { | |
21aa081e | 11641 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11642 | " is not power of 2 [in module %s]"), |
21aa081e | 11643 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11644 | } |
11645 | ||
976ca316 | 11646 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11647 | htab->version = version; |
11648 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11649 | htab->nr_units = nr_units; |
11650 | htab->nr_slots = nr_slots; | |
11651 | htab->hash_table = index_ptr; | |
11652 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11653 | |
11654 | /* Exit early if the table is empty. */ | |
11655 | if (nr_slots == 0 || nr_units == 0 | |
11656 | || (version == 2 && nr_columns == 0)) | |
11657 | { | |
11658 | /* All must be zero. */ | |
11659 | if (nr_slots != 0 || nr_units != 0 | |
11660 | || (version == 2 && nr_columns != 0)) | |
11661 | { | |
b98664d3 | 11662 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11663 | " all zero [in modules %s]"), |
11664 | dwp_file->name); | |
11665 | } | |
11666 | return htab; | |
11667 | } | |
11668 | ||
11669 | if (version == 1) | |
11670 | { | |
11671 | htab->section_pool.v1.indices = | |
11672 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11673 | /* It's harder to decide whether the section is too small in v1. | |
11674 | V1 is deprecated anyway so we punt. */ | |
11675 | } | |
11676 | else | |
11677 | { | |
11678 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11679 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11680 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11681 | /* Reverse map for error checking. */ |
11682 | int ids_seen[DW_SECT_MAX + 1]; | |
11683 | int i; | |
11684 | ||
11685 | if (nr_columns < 2) | |
11686 | { | |
11687 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11688 | " in section table [in module %s]"), | |
11689 | dwp_file->name); | |
11690 | } | |
11691 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11692 | { | |
11693 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11694 | " in section table [in module %s]"), | |
11695 | dwp_file->name); | |
11696 | } | |
04fd5eed GB |
11697 | memset (ids, 255, sizeof_ids); |
11698 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11699 | for (i = 0; i < nr_columns; ++i) |
11700 | { | |
11701 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11702 | ||
11703 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11704 | { | |
11705 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11706 | " in section table [in module %s]"), | |
11707 | id, dwp_file->name); | |
11708 | } | |
11709 | if (ids_seen[id] != -1) | |
11710 | { | |
11711 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11712 | " id %d in section table [in module %s]"), | |
11713 | id, dwp_file->name); | |
11714 | } | |
11715 | ids_seen[id] = i; | |
11716 | ids[i] = id; | |
11717 | } | |
11718 | /* Must have exactly one info or types section. */ | |
11719 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11720 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11721 | != 1) | |
11722 | { | |
11723 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11724 | " DWO info/types section [in module %s]"), | |
11725 | dwp_file->name); | |
11726 | } | |
11727 | /* Must have an abbrev section. */ | |
11728 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11729 | { | |
11730 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11731 | " section [in module %s]"), | |
11732 | dwp_file->name); | |
11733 | } | |
11734 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11735 | htab->section_pool.v2.sizes = | |
11736 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11737 | * nr_units * nr_columns); | |
11738 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11739 | * nr_units * nr_columns)) | |
11740 | > index_end) | |
11741 | { | |
11742 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11743 | " [in module %s]"), | |
11744 | dwp_file->name); | |
11745 | } | |
11746 | } | |
80626a55 DE |
11747 | |
11748 | return htab; | |
11749 | } | |
11750 | ||
11751 | /* Update SECTIONS with the data from SECTP. | |
11752 | ||
11753 | This function is like the other "locate" section routines that are | |
11754 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11755 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11756 | |
11757 | The result is non-zero for success, or zero if an error was found. */ | |
11758 | ||
11759 | static int | |
73869dc2 DE |
11760 | locate_v1_virtual_dwo_sections (asection *sectp, |
11761 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11762 | { |
11763 | const struct dwop_section_names *names = &dwop_section_names; | |
11764 | ||
11765 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11766 | { | |
11767 | /* There can be only one. */ | |
049412e3 | 11768 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11769 | return 0; |
049412e3 | 11770 | sections->abbrev.s.section = sectp; |
fd361982 | 11771 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11772 | } |
11773 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11774 | || section_is_p (sectp->name, &names->types_dwo)) | |
11775 | { | |
11776 | /* There can be only one. */ | |
049412e3 | 11777 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11778 | return 0; |
049412e3 | 11779 | sections->info_or_types.s.section = sectp; |
fd361982 | 11780 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11781 | } |
11782 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11783 | { | |
11784 | /* There can be only one. */ | |
049412e3 | 11785 | if (sections->line.s.section != NULL) |
80626a55 | 11786 | return 0; |
049412e3 | 11787 | sections->line.s.section = sectp; |
fd361982 | 11788 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11789 | } |
11790 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11791 | { | |
11792 | /* There can be only one. */ | |
049412e3 | 11793 | if (sections->loc.s.section != NULL) |
80626a55 | 11794 | return 0; |
049412e3 | 11795 | sections->loc.s.section = sectp; |
fd361982 | 11796 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11797 | } |
11798 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11799 | { | |
11800 | /* There can be only one. */ | |
049412e3 | 11801 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11802 | return 0; |
049412e3 | 11803 | sections->macinfo.s.section = sectp; |
fd361982 | 11804 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11805 | } |
11806 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11807 | { | |
11808 | /* There can be only one. */ | |
049412e3 | 11809 | if (sections->macro.s.section != NULL) |
80626a55 | 11810 | return 0; |
049412e3 | 11811 | sections->macro.s.section = sectp; |
fd361982 | 11812 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11813 | } |
11814 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11815 | { | |
11816 | /* There can be only one. */ | |
049412e3 | 11817 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11818 | return 0; |
049412e3 | 11819 | sections->str_offsets.s.section = sectp; |
fd361982 | 11820 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11821 | } |
11822 | else | |
11823 | { | |
11824 | /* No other kind of section is valid. */ | |
11825 | return 0; | |
11826 | } | |
11827 | ||
11828 | return 1; | |
11829 | } | |
11830 | ||
73869dc2 DE |
11831 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11832 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11833 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11834 | This is for DWP version 1 files. */ | |
80626a55 DE |
11835 | |
11836 | static struct dwo_unit * | |
976ca316 | 11837 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11838 | struct dwp_file *dwp_file, |
73869dc2 DE |
11839 | uint32_t unit_index, |
11840 | const char *comp_dir, | |
11841 | ULONGEST signature, int is_debug_types) | |
80626a55 | 11842 | { |
73869dc2 DE |
11843 | const struct dwp_hash_table *dwp_htab = |
11844 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11845 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11846 | const char *kind = is_debug_types ? "TU" : "CU"; |
11847 | struct dwo_file *dwo_file; | |
11848 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11849 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11850 | void **dwo_file_slot; |
80626a55 DE |
11851 | int i; |
11852 | ||
73869dc2 DE |
11853 | gdb_assert (dwp_file->version == 1); |
11854 | ||
b4f54984 | 11855 | if (dwarf_read_debug) |
80626a55 | 11856 | { |
73869dc2 | 11857 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 11858 | kind, |
73869dc2 | 11859 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
11860 | dwp_file->name); |
11861 | } | |
11862 | ||
19ac8c2e | 11863 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11864 | Put a limit on the number of sections we look for so that bad data |
11865 | doesn't cause us to loop forever. */ | |
11866 | ||
73869dc2 | 11867 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11868 | (1 /* .debug_info or .debug_types */ \ |
11869 | + 1 /* .debug_abbrev */ \ | |
11870 | + 1 /* .debug_line */ \ | |
11871 | + 1 /* .debug_loc */ \ | |
11872 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11873 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11874 | + 1 /* trailing zero */) |
11875 | ||
11876 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11877 | |
73869dc2 | 11878 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11879 | { |
11880 | asection *sectp; | |
11881 | uint32_t section_nr = | |
11882 | read_4_bytes (dbfd, | |
73869dc2 DE |
11883 | dwp_htab->section_pool.v1.indices |
11884 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11885 | |
11886 | if (section_nr == 0) | |
11887 | break; | |
11888 | if (section_nr >= dwp_file->num_sections) | |
11889 | { | |
11890 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11891 | " [in module %s]"), | |
11892 | dwp_file->name); | |
11893 | } | |
11894 | ||
11895 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11896 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11897 | { |
11898 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11899 | " [in module %s]"), | |
11900 | dwp_file->name); | |
11901 | } | |
11902 | } | |
11903 | ||
11904 | if (i < 2 | |
96b79293 TT |
11905 | || sections.info_or_types.empty () |
11906 | || sections.abbrev.empty ()) | |
80626a55 DE |
11907 | { |
11908 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11909 | " [in module %s]"), | |
11910 | dwp_file->name); | |
11911 | } | |
73869dc2 | 11912 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11913 | { |
11914 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11915 | " [in module %s]"), | |
11916 | dwp_file->name); | |
11917 | } | |
11918 | ||
11919 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11920 | have dwo_unit "live" in that. At least for now. | |
11921 | ||
11922 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11923 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11924 | file, we can combine them back into a virtual DWO file to save space |
11925 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11926 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11927 | ||
791afaa2 TT |
11928 | std::string virtual_dwo_name = |
11929 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11930 | sections.abbrev.get_id (), |
11931 | sections.line.get_id (), | |
11932 | sections.loc.get_id (), | |
11933 | sections.str_offsets.get_id ()); | |
80626a55 | 11934 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 11935 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 11936 | comp_dir); |
80626a55 DE |
11937 | /* Create one if necessary. */ |
11938 | if (*dwo_file_slot == NULL) | |
11939 | { | |
b4f54984 | 11940 | if (dwarf_read_debug) |
80626a55 DE |
11941 | { |
11942 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11943 | virtual_dwo_name.c_str ()); |
80626a55 | 11944 | } |
51ac9db5 | 11945 | dwo_file = new struct dwo_file; |
976ca316 | 11946 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 11947 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11948 | dwo_file->sections.abbrev = sections.abbrev; |
11949 | dwo_file->sections.line = sections.line; | |
11950 | dwo_file->sections.loc = sections.loc; | |
11951 | dwo_file->sections.macinfo = sections.macinfo; | |
11952 | dwo_file->sections.macro = sections.macro; | |
11953 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11954 | /* The "str" section is global to the entire DWP file. */ | |
11955 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11956 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11957 | there's no need to record it in dwo_file. |
11958 | Also, we can't simply record type sections in dwo_file because | |
11959 | we record a pointer into the vector in dwo_unit. As we collect more | |
11960 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11961 | for it, invalidating all copies of pointers into the previous |
11962 | contents. */ | |
80626a55 DE |
11963 | *dwo_file_slot = dwo_file; |
11964 | } | |
11965 | else | |
11966 | { | |
b4f54984 | 11967 | if (dwarf_read_debug) |
80626a55 DE |
11968 | { |
11969 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11970 | virtual_dwo_name.c_str ()); |
80626a55 | 11971 | } |
9a3c8263 | 11972 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11973 | } |
80626a55 | 11974 | |
976ca316 | 11975 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
11976 | dwo_unit->dwo_file = dwo_file; |
11977 | dwo_unit->signature = signature; | |
8d749320 | 11978 | dwo_unit->section = |
976ca316 | 11979 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 11980 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11981 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11982 | |
11983 | return dwo_unit; | |
11984 | } | |
11985 | ||
73869dc2 DE |
11986 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
11987 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
11988 | piece within that section used by a TU/CU, return a virtual section | |
11989 | of just that piece. */ | |
11990 | ||
11991 | static struct dwarf2_section_info | |
976ca316 | 11992 | create_dwp_v2_section (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11993 | struct dwarf2_section_info *section, |
73869dc2 DE |
11994 | bfd_size_type offset, bfd_size_type size) |
11995 | { | |
11996 | struct dwarf2_section_info result; | |
11997 | asection *sectp; | |
11998 | ||
11999 | gdb_assert (section != NULL); | |
12000 | gdb_assert (!section->is_virtual); | |
12001 | ||
12002 | memset (&result, 0, sizeof (result)); | |
12003 | result.s.containing_section = section; | |
dc4ccb6f | 12004 | result.is_virtual = true; |
73869dc2 DE |
12005 | |
12006 | if (size == 0) | |
12007 | return result; | |
12008 | ||
96b79293 | 12009 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12010 | |
12011 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12012 | bounds of the real section. This is a pretty-rare event, so just | |
12013 | flag an error (easier) instead of a warning and trying to cope. */ | |
12014 | if (sectp == NULL | |
fd361982 | 12015 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12016 | { |
73869dc2 DE |
12017 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12018 | " in section %s [in module %s]"), | |
fd361982 | 12019 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 12020 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
12021 | } |
12022 | ||
12023 | result.virtual_offset = offset; | |
12024 | result.size = size; | |
12025 | return result; | |
12026 | } | |
12027 | ||
12028 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12029 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12030 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12031 | This is for DWP version 2 files. */ | |
12032 | ||
12033 | static struct dwo_unit * | |
976ca316 | 12034 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12035 | struct dwp_file *dwp_file, |
73869dc2 DE |
12036 | uint32_t unit_index, |
12037 | const char *comp_dir, | |
12038 | ULONGEST signature, int is_debug_types) | |
12039 | { | |
73869dc2 DE |
12040 | const struct dwp_hash_table *dwp_htab = |
12041 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12042 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12043 | const char *kind = is_debug_types ? "TU" : "CU"; |
12044 | struct dwo_file *dwo_file; | |
12045 | struct dwo_unit *dwo_unit; | |
12046 | struct virtual_v2_dwo_sections sections; | |
12047 | void **dwo_file_slot; | |
73869dc2 DE |
12048 | int i; |
12049 | ||
12050 | gdb_assert (dwp_file->version == 2); | |
12051 | ||
b4f54984 | 12052 | if (dwarf_read_debug) |
73869dc2 DE |
12053 | { |
12054 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12055 | kind, | |
12056 | pulongest (unit_index), hex_string (signature), | |
12057 | dwp_file->name); | |
12058 | } | |
12059 | ||
12060 | /* Fetch the section offsets of this DWO unit. */ | |
12061 | ||
12062 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12063 | |
12064 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12065 | { | |
12066 | uint32_t offset = read_4_bytes (dbfd, | |
12067 | dwp_htab->section_pool.v2.offsets | |
12068 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12069 | + i) | |
12070 | * sizeof (uint32_t))); | |
12071 | uint32_t size = read_4_bytes (dbfd, | |
12072 | dwp_htab->section_pool.v2.sizes | |
12073 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12074 | + i) | |
12075 | * sizeof (uint32_t))); | |
12076 | ||
12077 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12078 | { | |
12079 | case DW_SECT_INFO: | |
12080 | case DW_SECT_TYPES: | |
12081 | sections.info_or_types_offset = offset; | |
12082 | sections.info_or_types_size = size; | |
12083 | break; | |
12084 | case DW_SECT_ABBREV: | |
12085 | sections.abbrev_offset = offset; | |
12086 | sections.abbrev_size = size; | |
12087 | break; | |
12088 | case DW_SECT_LINE: | |
12089 | sections.line_offset = offset; | |
12090 | sections.line_size = size; | |
12091 | break; | |
12092 | case DW_SECT_LOC: | |
12093 | sections.loc_offset = offset; | |
12094 | sections.loc_size = size; | |
12095 | break; | |
12096 | case DW_SECT_STR_OFFSETS: | |
12097 | sections.str_offsets_offset = offset; | |
12098 | sections.str_offsets_size = size; | |
12099 | break; | |
12100 | case DW_SECT_MACINFO: | |
12101 | sections.macinfo_offset = offset; | |
12102 | sections.macinfo_size = size; | |
12103 | break; | |
12104 | case DW_SECT_MACRO: | |
12105 | sections.macro_offset = offset; | |
12106 | sections.macro_size = size; | |
12107 | break; | |
12108 | } | |
12109 | } | |
12110 | ||
12111 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12112 | have dwo_unit "live" in that. At least for now. | |
12113 | ||
12114 | The DWP file can be made up of a random collection of CUs and TUs. | |
12115 | However, for each CU + set of TUs that came from the same original DWO | |
12116 | file, we can combine them back into a virtual DWO file to save space | |
12117 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12118 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12119 | ||
791afaa2 TT |
12120 | std::string virtual_dwo_name = |
12121 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12122 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12123 | (long) (sections.line_size ? sections.line_offset : 0), | |
12124 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12125 | (long) (sections.str_offsets_size | |
12126 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12127 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12128 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12129 | comp_dir); |
73869dc2 DE |
12130 | /* Create one if necessary. */ |
12131 | if (*dwo_file_slot == NULL) | |
12132 | { | |
b4f54984 | 12133 | if (dwarf_read_debug) |
73869dc2 DE |
12134 | { |
12135 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12136 | virtual_dwo_name.c_str ()); |
73869dc2 | 12137 | } |
51ac9db5 | 12138 | dwo_file = new struct dwo_file; |
976ca316 | 12139 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12140 | dwo_file->comp_dir = comp_dir; |
12141 | dwo_file->sections.abbrev = | |
976ca316 | 12142 | create_dwp_v2_section (per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12143 | sections.abbrev_offset, sections.abbrev_size); |
12144 | dwo_file->sections.line = | |
976ca316 | 12145 | create_dwp_v2_section (per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12146 | sections.line_offset, sections.line_size); |
12147 | dwo_file->sections.loc = | |
976ca316 | 12148 | create_dwp_v2_section (per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12149 | sections.loc_offset, sections.loc_size); |
12150 | dwo_file->sections.macinfo = | |
976ca316 | 12151 | create_dwp_v2_section (per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12152 | sections.macinfo_offset, sections.macinfo_size); |
12153 | dwo_file->sections.macro = | |
976ca316 | 12154 | create_dwp_v2_section (per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12155 | sections.macro_offset, sections.macro_size); |
12156 | dwo_file->sections.str_offsets = | |
976ca316 | 12157 | create_dwp_v2_section (per_objfile, |
ed2dc618 | 12158 | &dwp_file->sections.str_offsets, |
73869dc2 DE |
12159 | sections.str_offsets_offset, |
12160 | sections.str_offsets_size); | |
12161 | /* The "str" section is global to the entire DWP file. */ | |
12162 | dwo_file->sections.str = dwp_file->sections.str; | |
12163 | /* The info or types section is assigned below to dwo_unit, | |
12164 | there's no need to record it in dwo_file. | |
12165 | Also, we can't simply record type sections in dwo_file because | |
12166 | we record a pointer into the vector in dwo_unit. As we collect more | |
12167 | types we'll grow the vector and eventually have to reallocate space | |
12168 | for it, invalidating all copies of pointers into the previous | |
12169 | contents. */ | |
12170 | *dwo_file_slot = dwo_file; | |
12171 | } | |
12172 | else | |
12173 | { | |
b4f54984 | 12174 | if (dwarf_read_debug) |
73869dc2 DE |
12175 | { |
12176 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12177 | virtual_dwo_name.c_str ()); |
73869dc2 | 12178 | } |
9a3c8263 | 12179 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12180 | } |
73869dc2 | 12181 | |
976ca316 | 12182 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12183 | dwo_unit->dwo_file = dwo_file; |
12184 | dwo_unit->signature = signature; | |
8d749320 | 12185 | dwo_unit->section = |
976ca316 SM |
12186 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
12187 | *dwo_unit->section = create_dwp_v2_section (per_objfile, | |
ed2dc618 | 12188 | is_debug_types |
73869dc2 DE |
12189 | ? &dwp_file->sections.types |
12190 | : &dwp_file->sections.info, | |
12191 | sections.info_or_types_offset, | |
12192 | sections.info_or_types_size); | |
12193 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12194 | ||
12195 | return dwo_unit; | |
12196 | } | |
12197 | ||
57d63ce2 DE |
12198 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12199 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12200 | |
12201 | static struct dwo_unit * | |
976ca316 | 12202 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12203 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12204 | ULONGEST signature, int is_debug_types) |
80626a55 | 12205 | { |
57d63ce2 DE |
12206 | const struct dwp_hash_table *dwp_htab = |
12207 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12208 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12209 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12210 | uint32_t hash = signature & mask; |
12211 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12212 | unsigned int i; | |
12213 | void **slot; | |
870f88f7 | 12214 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12215 | |
12216 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12217 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12218 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12219 | ? dwp_file->loaded_tus.get () |
12220 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12221 | &find_dwo_cu, INSERT); |
80626a55 DE |
12222 | |
12223 | if (*slot != NULL) | |
9a3c8263 | 12224 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12225 | |
12226 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12227 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12228 | { |
12229 | ULONGEST signature_in_table; | |
12230 | ||
12231 | signature_in_table = | |
57d63ce2 | 12232 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12233 | if (signature_in_table == signature) |
12234 | { | |
57d63ce2 DE |
12235 | uint32_t unit_index = |
12236 | read_4_bytes (dbfd, | |
12237 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12238 | |
73869dc2 DE |
12239 | if (dwp_file->version == 1) |
12240 | { | |
976ca316 SM |
12241 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12242 | unit_index, comp_dir, | |
12243 | signature, is_debug_types); | |
73869dc2 DE |
12244 | } |
12245 | else | |
12246 | { | |
976ca316 SM |
12247 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12248 | unit_index, comp_dir, | |
12249 | signature, is_debug_types); | |
73869dc2 | 12250 | } |
9a3c8263 | 12251 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12252 | } |
12253 | if (signature_in_table == 0) | |
12254 | return NULL; | |
12255 | hash = (hash + hash2) & mask; | |
12256 | } | |
12257 | ||
12258 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12259 | " [in module %s]"), | |
12260 | dwp_file->name); | |
12261 | } | |
12262 | ||
ab5088bf | 12263 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12264 | Open the file specified by FILE_NAME and hand it off to BFD for |
12265 | preliminary analysis. Return a newly initialized bfd *, which | |
12266 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12267 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12268 | SEARCH_CWD is true if the current directory is to be searched. |
12269 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12270 | If successful, the file is added to the bfd include table of the |
12271 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12272 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12273 | NOTE: This function is derived from symfile_bfd_open. */ |
12274 | ||
192b62ce | 12275 | static gdb_bfd_ref_ptr |
976ca316 | 12276 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12277 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12278 | { |
24b9144d | 12279 | int desc; |
9c02c129 DE |
12280 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12281 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12282 | to debug_file_directory. */ | |
e0cc99a6 | 12283 | const char *search_path; |
9c02c129 DE |
12284 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12285 | ||
e0cc99a6 | 12286 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12287 | if (search_cwd) |
12288 | { | |
12289 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12290 | { |
12291 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12292 | debug_file_directory, | |
12293 | (char *) NULL)); | |
12294 | search_path = search_path_holder.get (); | |
12295 | } | |
6ac97d4c | 12296 | else |
e0cc99a6 | 12297 | search_path = "."; |
6ac97d4c | 12298 | } |
9c02c129 | 12299 | else |
e0cc99a6 | 12300 | search_path = debug_file_directory; |
3019eac3 | 12301 | |
24b9144d | 12302 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12303 | if (is_dwp) |
12304 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12305 | |
12306 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12307 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12308 | O_RDONLY | O_BINARY, &absolute_name); |
12309 | if (desc < 0) | |
12310 | return NULL; | |
12311 | ||
e0cc99a6 TT |
12312 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12313 | gnutarget, desc)); | |
9c02c129 DE |
12314 | if (sym_bfd == NULL) |
12315 | return NULL; | |
192b62ce | 12316 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12317 | |
192b62ce TT |
12318 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12319 | return NULL; | |
3019eac3 | 12320 | |
13aaf454 DE |
12321 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12322 | This is important because things like demangled_names_hash lives in the | |
12323 | objfile's per_bfd space and may have references to things like symbol | |
12324 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12325 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12326 | |
3019eac3 DE |
12327 | return sym_bfd; |
12328 | } | |
12329 | ||
ab5088bf | 12330 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12331 | COMP_DIR is the DW_AT_comp_dir attribute. |
12332 | The result is the bfd handle of the file. | |
12333 | If there is a problem finding or opening the file, return NULL. | |
12334 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12335 | same as symfile_bfd_open. */ | |
12336 | ||
192b62ce | 12337 | static gdb_bfd_ref_ptr |
976ca316 | 12338 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12339 | const char *file_name, const char *comp_dir) |
3019eac3 | 12340 | { |
80626a55 | 12341 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12342 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12343 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12344 | |
12345 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12346 | ||
12347 | if (comp_dir != NULL) | |
12348 | { | |
43816ebc TT |
12349 | gdb::unique_xmalloc_ptr<char> path_to_try |
12350 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12351 | |
12352 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12353 | search path, which seems useful. */ | |
976ca316 | 12354 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12355 | 0 /*is_dwp*/, |
192b62ce | 12356 | 1 /*search_cwd*/)); |
3019eac3 DE |
12357 | if (abfd != NULL) |
12358 | return abfd; | |
12359 | } | |
12360 | ||
12361 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12362 | is a list of paths. */ | |
12363 | ||
12364 | if (*debug_file_directory == '\0') | |
12365 | return NULL; | |
12366 | ||
976ca316 | 12367 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12368 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12369 | } |
12370 | ||
80626a55 DE |
12371 | /* This function is mapped across the sections and remembers the offset and |
12372 | size of each of the DWO debugging sections we are interested in. */ | |
12373 | ||
12374 | static void | |
12375 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12376 | { | |
9a3c8263 | 12377 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12378 | const struct dwop_section_names *names = &dwop_section_names; |
12379 | ||
12380 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12381 | { | |
049412e3 | 12382 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12383 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12384 | } |
12385 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12386 | { | |
049412e3 | 12387 | dwo_sections->info.s.section = sectp; |
fd361982 | 12388 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12389 | } |
12390 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12391 | { | |
049412e3 | 12392 | dwo_sections->line.s.section = sectp; |
fd361982 | 12393 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12394 | } |
12395 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12396 | { | |
049412e3 | 12397 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12398 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12399 | } |
41144253 | 12400 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12401 | { | |
12402 | dwo_sections->loclists.s.section = sectp; | |
12403 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12404 | } | |
80626a55 DE |
12405 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12406 | { | |
049412e3 | 12407 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12408 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12409 | } |
12410 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12411 | { | |
049412e3 | 12412 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12413 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12414 | } |
12415 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12416 | { | |
049412e3 | 12417 | dwo_sections->str.s.section = sectp; |
fd361982 | 12418 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12419 | } |
12420 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12421 | { | |
049412e3 | 12422 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12423 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12424 | } |
12425 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12426 | { | |
12427 | struct dwarf2_section_info type_section; | |
12428 | ||
12429 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12430 | type_section.s.section = sectp; |
fd361982 | 12431 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12432 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12433 | } |
12434 | } | |
12435 | ||
ab5088bf | 12436 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12437 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12438 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12439 | |
12440 | static struct dwo_file * | |
4ab09049 SM |
12441 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12442 | const char *comp_dir) | |
3019eac3 | 12443 | { |
976ca316 | 12444 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12445 | |
976ca316 | 12446 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12447 | if (dbfd == NULL) |
12448 | { | |
b4f54984 | 12449 | if (dwarf_read_debug) |
80626a55 DE |
12450 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12451 | return NULL; | |
12452 | } | |
263db9a1 | 12453 | |
51ac9db5 | 12454 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12455 | dwo_file->dwo_name = dwo_name; |
12456 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12457 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12458 | |
fb1eb2f9 | 12459 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12460 | &dwo_file->sections); |
3019eac3 | 12461 | |
976ca316 SM |
12462 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12463 | dwo_file->cus); | |
3019eac3 | 12464 | |
976ca316 | 12465 | create_debug_types_hash_table (per_objfile, dwo_file.get (), |
ed2dc618 | 12466 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12467 | |
b4f54984 | 12468 | if (dwarf_read_debug) |
80626a55 DE |
12469 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12470 | ||
263db9a1 | 12471 | return dwo_file.release (); |
3019eac3 DE |
12472 | } |
12473 | ||
80626a55 | 12474 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12475 | size of each of the DWP debugging sections common to version 1 and 2 that |
12476 | we are interested in. */ | |
3019eac3 | 12477 | |
80626a55 | 12478 | static void |
73869dc2 DE |
12479 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12480 | void *dwp_file_ptr) | |
3019eac3 | 12481 | { |
9a3c8263 | 12482 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12483 | const struct dwop_section_names *names = &dwop_section_names; |
12484 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12485 | |
80626a55 | 12486 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12487 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12488 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12489 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12490 | |
80626a55 DE |
12491 | /* Look for specific sections that we need. */ |
12492 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12493 | { | |
049412e3 | 12494 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12495 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12496 | } |
12497 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12498 | { | |
049412e3 | 12499 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12500 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12501 | } |
12502 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12503 | { | |
049412e3 | 12504 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12505 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12506 | } |
12507 | } | |
3019eac3 | 12508 | |
73869dc2 DE |
12509 | /* This function is mapped across the sections and remembers the offset and |
12510 | size of each of the DWP version 2 debugging sections that we are interested | |
12511 | in. This is split into a separate function because we don't know if we | |
12512 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12513 | ||
12514 | static void | |
12515 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12516 | { | |
9a3c8263 | 12517 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12518 | const struct dwop_section_names *names = &dwop_section_names; |
12519 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12520 | ||
12521 | /* Record the ELF section number for later lookup: this is what the | |
12522 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12523 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12524 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12525 | ||
12526 | /* Look for specific sections that we need. */ | |
12527 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12528 | { | |
049412e3 | 12529 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12530 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12531 | } |
12532 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12533 | { | |
049412e3 | 12534 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12535 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12536 | } |
12537 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12538 | { | |
049412e3 | 12539 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12540 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12541 | } |
12542 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12543 | { | |
049412e3 | 12544 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12545 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12546 | } |
12547 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12548 | { | |
049412e3 | 12549 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12550 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12551 | } |
12552 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12553 | { | |
049412e3 | 12554 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12555 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12556 | } |
12557 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12558 | { | |
049412e3 | 12559 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12560 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12561 | } |
12562 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12563 | { | |
049412e3 | 12564 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12565 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12566 | } |
12567 | } | |
12568 | ||
80626a55 | 12569 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12570 | |
80626a55 DE |
12571 | static hashval_t |
12572 | hash_dwp_loaded_cutus (const void *item) | |
12573 | { | |
9a3c8263 | 12574 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12575 | |
80626a55 DE |
12576 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12577 | return dwo_unit->signature; | |
3019eac3 DE |
12578 | } |
12579 | ||
80626a55 | 12580 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12581 | |
80626a55 DE |
12582 | static int |
12583 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12584 | { |
9a3c8263 SM |
12585 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12586 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12587 | |
80626a55 DE |
12588 | return dua->signature == dub->signature; |
12589 | } | |
3019eac3 | 12590 | |
80626a55 | 12591 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12592 | |
48b490f2 | 12593 | static htab_up |
298e9637 | 12594 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12595 | { |
48b490f2 TT |
12596 | return htab_up (htab_create_alloc (3, |
12597 | hash_dwp_loaded_cutus, | |
12598 | eq_dwp_loaded_cutus, | |
12599 | NULL, xcalloc, xfree)); | |
80626a55 | 12600 | } |
3019eac3 | 12601 | |
ab5088bf DE |
12602 | /* Try to open DWP file FILE_NAME. |
12603 | The result is the bfd handle of the file. | |
12604 | If there is a problem finding or opening the file, return NULL. | |
12605 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12606 | same as symfile_bfd_open. */ | |
12607 | ||
192b62ce | 12608 | static gdb_bfd_ref_ptr |
976ca316 | 12609 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 12610 | { |
976ca316 | 12611 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12612 | 1 /*is_dwp*/, |
192b62ce | 12613 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12614 | if (abfd != NULL) |
12615 | return abfd; | |
12616 | ||
12617 | /* Work around upstream bug 15652. | |
12618 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12619 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12620 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12621 | of the executable's path may have discarded the needed info. | |
12622 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12623 | .gnu_debuglink, but that doesn't exist yet.] | |
12624 | Strip the directory from FILE_NAME and search again. */ | |
12625 | if (*debug_file_directory != '\0') | |
12626 | { | |
12627 | /* Don't implicitly search the current directory here. | |
12628 | If the user wants to search "." to handle this case, | |
12629 | it must be added to debug-file-directory. */ | |
976ca316 SM |
12630 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
12631 | 1 /*is_dwp*/, | |
6ac97d4c DE |
12632 | 0 /*search_cwd*/); |
12633 | } | |
12634 | ||
12635 | return NULL; | |
ab5088bf DE |
12636 | } |
12637 | ||
80626a55 DE |
12638 | /* Initialize the use of the DWP file for the current objfile. |
12639 | By convention the name of the DWP file is ${objfile}.dwp. | |
12640 | The result is NULL if it can't be found. */ | |
a766d390 | 12641 | |
400174b1 | 12642 | static std::unique_ptr<struct dwp_file> |
976ca316 | 12643 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 12644 | { |
976ca316 | 12645 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 12646 | |
82bf32bc JK |
12647 | /* Try to find first .dwp for the binary file before any symbolic links |
12648 | resolving. */ | |
6c447423 DE |
12649 | |
12650 | /* If the objfile is a debug file, find the name of the real binary | |
12651 | file and get the name of dwp file from there. */ | |
d721ba37 | 12652 | std::string dwp_name; |
6c447423 DE |
12653 | if (objfile->separate_debug_objfile_backlink != NULL) |
12654 | { | |
12655 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12656 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12657 | |
d721ba37 | 12658 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12659 | } |
12660 | else | |
d721ba37 PA |
12661 | dwp_name = objfile->original_name; |
12662 | ||
12663 | dwp_name += ".dwp"; | |
80626a55 | 12664 | |
976ca316 | 12665 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12666 | if (dbfd == NULL |
12667 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12668 | { | |
12669 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12670 | dwp_name = objfile_name (objfile); |
12671 | dwp_name += ".dwp"; | |
976ca316 | 12672 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12673 | } |
12674 | ||
80626a55 DE |
12675 | if (dbfd == NULL) |
12676 | { | |
b4f54984 | 12677 | if (dwarf_read_debug) |
d721ba37 | 12678 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12679 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12680 | } |
400174b1 TT |
12681 | |
12682 | const char *name = bfd_get_filename (dbfd.get ()); | |
12683 | std::unique_ptr<struct dwp_file> dwp_file | |
12684 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12685 | |
0a0f4c01 | 12686 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 12687 | dwp_file->elf_sections = |
976ca316 | 12688 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
12689 | dwp_file->num_sections, asection *); |
12690 | ||
400174b1 TT |
12691 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12692 | dwarf2_locate_common_dwp_sections, | |
12693 | dwp_file.get ()); | |
80626a55 | 12694 | |
976ca316 | 12695 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 12696 | |
976ca316 | 12697 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 12698 | |
73869dc2 | 12699 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12700 | if (dwp_file->cus && dwp_file->tus |
12701 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12702 | { |
12703 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12704 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12705 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12706 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12707 | " TU version %s [in DWP file %s]"), | |
12708 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12709 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12710 | } |
08302ed2 DE |
12711 | |
12712 | if (dwp_file->cus) | |
12713 | dwp_file->version = dwp_file->cus->version; | |
12714 | else if (dwp_file->tus) | |
12715 | dwp_file->version = dwp_file->tus->version; | |
12716 | else | |
12717 | dwp_file->version = 2; | |
73869dc2 DE |
12718 | |
12719 | if (dwp_file->version == 2) | |
400174b1 TT |
12720 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12721 | dwarf2_locate_v2_dwp_sections, | |
12722 | dwp_file.get ()); | |
73869dc2 | 12723 | |
298e9637 SM |
12724 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12725 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12726 | |
b4f54984 | 12727 | if (dwarf_read_debug) |
80626a55 DE |
12728 | { |
12729 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12730 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12731 | " %s CUs, %s TUs\n", |
12732 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12733 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12734 | } |
12735 | ||
12736 | return dwp_file; | |
3019eac3 | 12737 | } |
c906108c | 12738 | |
ab5088bf DE |
12739 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12740 | ||
12741 | static struct dwp_file * | |
976ca316 | 12742 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 12743 | { |
976ca316 | 12744 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 12745 | { |
976ca316 SM |
12746 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
12747 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 12748 | } |
976ca316 | 12749 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
12750 | } |
12751 | ||
80626a55 DE |
12752 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12753 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12754 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12755 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12756 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12757 | ||
12758 | This is called, for example, when wanting to read a variable with a | |
12759 | complex location. Therefore we don't want to do file i/o for every call. | |
12760 | Therefore we don't want to look for a DWO file on every call. | |
12761 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12762 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12763 | for a DWO file. | |
12764 | ||
1c658ad5 | 12765 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12766 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12767 | |
3019eac3 | 12768 | static struct dwo_unit * |
4ab09049 | 12769 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 12770 | ULONGEST signature, int is_debug_types) |
3019eac3 | 12771 | { |
976ca316 SM |
12772 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
12773 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
12774 | const char *kind = is_debug_types ? "TU" : "CU"; |
12775 | void **dwo_file_slot; | |
3019eac3 | 12776 | struct dwo_file *dwo_file; |
80626a55 | 12777 | struct dwp_file *dwp_file; |
cb1df416 | 12778 | |
6a506a2d DE |
12779 | /* First see if there's a DWP file. |
12780 | If we have a DWP file but didn't find the DWO inside it, don't | |
12781 | look for the original DWO file. It makes gdb behave differently | |
12782 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12783 | |
976ca316 | 12784 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 12785 | if (dwp_file != NULL) |
cf2c3c16 | 12786 | { |
80626a55 DE |
12787 | const struct dwp_hash_table *dwp_htab = |
12788 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12789 | ||
12790 | if (dwp_htab != NULL) | |
12791 | { | |
12792 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
12793 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
12794 | is_debug_types); | |
80626a55 DE |
12795 | |
12796 | if (dwo_cutu != NULL) | |
12797 | { | |
b4f54984 | 12798 | if (dwarf_read_debug) |
80626a55 DE |
12799 | { |
12800 | fprintf_unfiltered (gdb_stdlog, | |
12801 | "Virtual DWO %s %s found: @%s\n", | |
12802 | kind, hex_string (signature), | |
12803 | host_address_to_string (dwo_cutu)); | |
12804 | } | |
12805 | return dwo_cutu; | |
12806 | } | |
12807 | } | |
12808 | } | |
6a506a2d | 12809 | else |
80626a55 | 12810 | { |
6a506a2d | 12811 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12812 | |
976ca316 | 12813 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 12814 | if (*dwo_file_slot == NULL) |
80626a55 | 12815 | { |
6a506a2d | 12816 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 12817 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 12818 | } |
6a506a2d | 12819 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12820 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12821 | |
6a506a2d | 12822 | if (dwo_file != NULL) |
19c3d4c9 | 12823 | { |
6a506a2d DE |
12824 | struct dwo_unit *dwo_cutu = NULL; |
12825 | ||
12826 | if (is_debug_types && dwo_file->tus) | |
12827 | { | |
12828 | struct dwo_unit find_dwo_cutu; | |
12829 | ||
12830 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12831 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12832 | dwo_cutu |
b0b6a987 TT |
12833 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12834 | &find_dwo_cutu); | |
6a506a2d | 12835 | } |
33c5cd75 | 12836 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12837 | { |
33c5cd75 DB |
12838 | struct dwo_unit find_dwo_cutu; |
12839 | ||
12840 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12841 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12842 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12843 | &find_dwo_cutu); |
6a506a2d DE |
12844 | } |
12845 | ||
12846 | if (dwo_cutu != NULL) | |
12847 | { | |
b4f54984 | 12848 | if (dwarf_read_debug) |
6a506a2d DE |
12849 | { |
12850 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
12851 | kind, dwo_name, hex_string (signature), | |
12852 | host_address_to_string (dwo_cutu)); | |
12853 | } | |
12854 | return dwo_cutu; | |
80626a55 DE |
12855 | } |
12856 | } | |
2e276125 | 12857 | } |
9cdd5dbd | 12858 | |
80626a55 DE |
12859 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12860 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12861 | correctly to find the file. */ | |
12862 | ||
b4f54984 | 12863 | if (dwarf_read_debug) |
80626a55 DE |
12864 | { |
12865 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
12866 | kind, dwo_name, hex_string (signature)); | |
12867 | } | |
3019eac3 | 12868 | |
6656a72d DE |
12869 | /* This is a warning and not a complaint because it can be caused by |
12870 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12871 | { |
12872 | /* Print the name of the DWP file if we looked there, helps the user | |
12873 | better diagnose the problem. */ | |
791afaa2 | 12874 | std::string dwp_text; |
43942612 DE |
12875 | |
12876 | if (dwp_file != NULL) | |
791afaa2 TT |
12877 | dwp_text = string_printf (" [in DWP file %s]", |
12878 | lbasename (dwp_file->name)); | |
43942612 | 12879 | |
9d8780f0 | 12880 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 12881 | " [in module %s]"), |
4ab09049 SM |
12882 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
12883 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 12884 | } |
3019eac3 | 12885 | return NULL; |
5fb290d7 DJ |
12886 | } |
12887 | ||
80626a55 DE |
12888 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12889 | See lookup_dwo_cutu_unit for details. */ | |
12890 | ||
12891 | static struct dwo_unit * | |
4ab09049 | 12892 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
12893 | ULONGEST signature) |
12894 | { | |
4ab09049 SM |
12895 | gdb_assert (!cu->per_cu->is_debug_types); |
12896 | ||
12897 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
12898 | } |
12899 | ||
12900 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12901 | See lookup_dwo_cutu_unit for details. */ | |
12902 | ||
12903 | static struct dwo_unit * | |
4ab09049 | 12904 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 12905 | { |
4ab09049 SM |
12906 | gdb_assert (cu->per_cu->is_debug_types); |
12907 | ||
12908 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
12909 | ||
12910 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
12911 | } |
12912 | ||
89e63ee4 DE |
12913 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12914 | ||
12915 | static int | |
12916 | queue_and_load_dwo_tu (void **slot, void *info) | |
12917 | { | |
12918 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 12919 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 12920 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 12921 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
12922 | |
12923 | if (sig_type != NULL) | |
12924 | { | |
12925 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
12926 | ||
12927 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
12928 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12929 | while processing PER_CU. */ | |
120ce1b5 | 12930 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
12931 | load_full_type_unit (sig_cu, cu->per_objfile); |
12932 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
12933 | } |
12934 | ||
12935 | return 1; | |
12936 | } | |
12937 | ||
1b555f17 | 12938 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
12939 | The DWO may have the only definition of the type, though it may not be |
12940 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12941 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12942 | ||
12943 | static void | |
1b555f17 | 12944 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
12945 | { |
12946 | struct dwo_unit *dwo_unit; | |
12947 | struct dwo_file *dwo_file; | |
12948 | ||
1b555f17 SM |
12949 | gdb_assert (cu != nullptr); |
12950 | gdb_assert (!cu->per_cu->is_debug_types); | |
12951 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 12952 | |
1b555f17 | 12953 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
12954 | gdb_assert (dwo_unit != NULL); |
12955 | ||
12956 | dwo_file = dwo_unit->dwo_file; | |
12957 | if (dwo_file->tus != NULL) | |
1b555f17 | 12958 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
12959 | } |
12960 | ||
3019eac3 | 12961 | /* Read in various DIEs. */ |
348e048f | 12962 | |
d389af10 | 12963 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12964 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12965 | already referenced by DW_AT_abstract_origin from the children of the | |
12966 | current DIE. */ | |
d389af10 JK |
12967 | |
12968 | static void | |
12969 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
12970 | { | |
12971 | struct die_info *child_die; | |
791afaa2 | 12972 | sect_offset *offsetp; |
d389af10 JK |
12973 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
12974 | struct die_info *origin_die; | |
12975 | /* Iterator of the ORIGIN_DIE children. */ | |
12976 | struct die_info *origin_child_die; | |
d389af10 | 12977 | struct attribute *attr; |
cd02d79d PA |
12978 | struct dwarf2_cu *origin_cu; |
12979 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
12980 | |
12981 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
12982 | if (!attr) | |
12983 | return; | |
12984 | ||
cd02d79d PA |
12985 | /* Note that following die references may follow to a die in a |
12986 | different cu. */ | |
12987 | ||
12988 | origin_cu = cu; | |
12989 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
12990 | ||
12991 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
12992 | symbols in. */ | |
12993 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
12994 | origin_cu->list_in_scope = cu->list_in_scope; | |
12995 | ||
edb3359d DJ |
12996 | if (die->tag != origin_die->tag |
12997 | && !(die->tag == DW_TAG_inlined_subroutine | |
12998 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12999 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13000 | sect_offset_str (die->sect_off), |
13001 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13002 | |
791afaa2 | 13003 | std::vector<sect_offset> offsets; |
d389af10 | 13004 | |
3ea89b92 PMR |
13005 | for (child_die = die->child; |
13006 | child_die && child_die->tag; | |
436c571c | 13007 | child_die = child_die->sibling) |
3ea89b92 PMR |
13008 | { |
13009 | struct die_info *child_origin_die; | |
13010 | struct dwarf2_cu *child_origin_cu; | |
13011 | ||
13012 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13013 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13014 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13015 | present in the abstract instance but not referenced in the concrete | |
13016 | one. */ | |
216f72a1 JK |
13017 | if (child_die->tag == DW_TAG_call_site |
13018 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13019 | continue; |
13020 | ||
c38f313d DJ |
13021 | /* For each CHILD_DIE, find the corresponding child of |
13022 | ORIGIN_DIE. If there is more than one layer of | |
13023 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13024 | but GCC versions at least through 4.4 generate this (GCC PR | |
13025 | 40573). */ | |
3ea89b92 PMR |
13026 | child_origin_die = child_die; |
13027 | child_origin_cu = cu; | |
c38f313d DJ |
13028 | while (1) |
13029 | { | |
cd02d79d PA |
13030 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13031 | child_origin_cu); | |
c38f313d DJ |
13032 | if (attr == NULL) |
13033 | break; | |
cd02d79d PA |
13034 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13035 | &child_origin_cu); | |
c38f313d DJ |
13036 | } |
13037 | ||
d389af10 JK |
13038 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13039 | counterpart may exist. */ | |
c38f313d | 13040 | if (child_origin_die != child_die) |
d389af10 | 13041 | { |
edb3359d DJ |
13042 | if (child_die->tag != child_origin_die->tag |
13043 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13044 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13045 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13046 | "different tags"), |
9d8780f0 SM |
13047 | sect_offset_str (child_die->sect_off), |
13048 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13049 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13050 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13051 | "different parents"), |
9d8780f0 SM |
13052 | sect_offset_str (child_die->sect_off), |
13053 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13054 | else |
791afaa2 | 13055 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13056 | } |
d389af10 | 13057 | } |
791afaa2 TT |
13058 | std::sort (offsets.begin (), offsets.end ()); |
13059 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13060 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13061 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13062 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13063 | "to DIE %s as their abstract origin"), |
13064 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13065 | |
791afaa2 | 13066 | offsetp = offsets.data (); |
d389af10 JK |
13067 | origin_child_die = origin_die->child; |
13068 | while (origin_child_die && origin_child_die->tag) | |
13069 | { | |
13070 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13071 | while (offsetp < offsets_end |
9c541725 | 13072 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13073 | offsetp++; |
b64f50a1 | 13074 | if (offsetp >= offsets_end |
9c541725 | 13075 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13076 | { |
adde2bff DE |
13077 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13078 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13079 | This can happen with mutually referenced abstract_origins. | |
13080 | PR 16581. */ | |
13081 | if (!origin_child_die->in_process) | |
13082 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13083 | } |
436c571c | 13084 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13085 | } |
cd02d79d | 13086 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13087 | |
13088 | if (cu != origin_cu) | |
13089 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13090 | } |
13091 | ||
c906108c | 13092 | static void |
e7c27a73 | 13093 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13094 | { |
5e22e966 | 13095 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13096 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13097 | struct context_stack *newobj; |
c906108c SS |
13098 | CORE_ADDR lowpc; |
13099 | CORE_ADDR highpc; | |
13100 | struct die_info *child_die; | |
edb3359d | 13101 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13102 | const char *name; |
e142c38c | 13103 | CORE_ADDR baseaddr; |
801e3a5b | 13104 | struct block *block; |
edb3359d | 13105 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13106 | std::vector<struct symbol *> template_args; |
34eaf542 | 13107 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13108 | |
13109 | if (inlined_func) | |
13110 | { | |
13111 | /* If we do not have call site information, we can't show the | |
13112 | caller of this inlined function. That's too confusing, so | |
13113 | only use the scope for local variables. */ | |
13114 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13115 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13116 | if (call_line == NULL || call_file == NULL) | |
13117 | { | |
13118 | read_lexical_block_scope (die, cu); | |
13119 | return; | |
13120 | } | |
13121 | } | |
c906108c | 13122 | |
b3b3bada | 13123 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13124 | |
94af9270 | 13125 | name = dwarf2_name (die, cu); |
c906108c | 13126 | |
e8d05480 JB |
13127 | /* Ignore functions with missing or empty names. These are actually |
13128 | illegal according to the DWARF standard. */ | |
13129 | if (name == NULL) | |
13130 | { | |
b98664d3 | 13131 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13132 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13133 | return; |
13134 | } | |
13135 | ||
13136 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13137 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13138 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13139 | { |
ae4d0c03 PM |
13140 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13141 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13142 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13143 | "for subprogram DIE at %s"), |
13144 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13145 | return; |
13146 | } | |
c906108c | 13147 | |
3e29f34a MR |
13148 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13149 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13150 | |
34eaf542 TT |
13151 | /* If we have any template arguments, then we must allocate a |
13152 | different sort of symbol. */ | |
436c571c | 13153 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13154 | { |
13155 | if (child_die->tag == DW_TAG_template_type_param | |
13156 | || child_die->tag == DW_TAG_template_value_param) | |
13157 | { | |
8c14c3a3 | 13158 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13159 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13160 | break; |
13161 | } | |
13162 | } | |
13163 | ||
c24bdb02 | 13164 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13165 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13166 | (struct symbol *) templ_func); | |
4c2df51b | 13167 | |
81873cc8 | 13168 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13169 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13170 | cu->language); |
13171 | ||
4cecd739 DJ |
13172 | /* If there is a location expression for DW_AT_frame_base, record |
13173 | it. */ | |
e142c38c | 13174 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13175 | if (attr != nullptr) |
fe978cb0 | 13176 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13177 | |
63e43d3a PMR |
13178 | /* If there is a location for the static link, record it. */ |
13179 | newobj->static_link = NULL; | |
13180 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13181 | if (attr != nullptr) |
63e43d3a | 13182 | { |
224c3ddb SM |
13183 | newobj->static_link |
13184 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13185 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13186 | cu->addr_type ()); |
63e43d3a PMR |
13187 | } |
13188 | ||
c24bdb02 | 13189 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13190 | |
639d11d3 | 13191 | if (die->child != NULL) |
c906108c | 13192 | { |
639d11d3 | 13193 | child_die = die->child; |
c906108c SS |
13194 | while (child_die && child_die->tag) |
13195 | { | |
34eaf542 TT |
13196 | if (child_die->tag == DW_TAG_template_type_param |
13197 | || child_die->tag == DW_TAG_template_value_param) | |
13198 | { | |
13199 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13200 | ||
f1078f66 | 13201 | if (arg != NULL) |
2f4732b0 | 13202 | template_args.push_back (arg); |
34eaf542 TT |
13203 | } |
13204 | else | |
13205 | process_die (child_die, cu); | |
436c571c | 13206 | child_die = child_die->sibling; |
c906108c SS |
13207 | } |
13208 | } | |
13209 | ||
d389af10 JK |
13210 | inherit_abstract_dies (die, cu); |
13211 | ||
4a811a97 UW |
13212 | /* If we have a DW_AT_specification, we might need to import using |
13213 | directives from the context of the specification DIE. See the | |
13214 | comment in determine_prefix. */ | |
13215 | if (cu->language == language_cplus | |
13216 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13217 | { | |
13218 | struct dwarf2_cu *spec_cu = cu; | |
13219 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13220 | ||
13221 | while (spec_die) | |
13222 | { | |
13223 | child_die = spec_die->child; | |
13224 | while (child_die && child_die->tag) | |
13225 | { | |
13226 | if (child_die->tag == DW_TAG_imported_module) | |
13227 | process_die (child_die, spec_cu); | |
436c571c | 13228 | child_die = child_die->sibling; |
4a811a97 UW |
13229 | } |
13230 | ||
13231 | /* In some cases, GCC generates specification DIEs that | |
13232 | themselves contain DW_AT_specification attributes. */ | |
13233 | spec_die = die_specification (spec_die, &spec_cu); | |
13234 | } | |
13235 | } | |
13236 | ||
c24bdb02 | 13237 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13238 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13239 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13240 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13241 | |
df8a16a1 | 13242 | /* For C++, set the block's scope. */ |
45280282 IB |
13243 | if ((cu->language == language_cplus |
13244 | || cu->language == language_fortran | |
c44af4eb TT |
13245 | || cu->language == language_d |
13246 | || cu->language == language_rust) | |
4d4ec4e5 | 13247 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13248 | block_set_scope (block, determine_prefix (die, cu), |
13249 | &objfile->objfile_obstack); | |
df8a16a1 | 13250 | |
801e3a5b JB |
13251 | /* If we have address ranges, record them. */ |
13252 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13253 | |
a60f3166 | 13254 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13255 | |
34eaf542 | 13256 | /* Attach template arguments to function. */ |
2f4732b0 | 13257 | if (!template_args.empty ()) |
34eaf542 TT |
13258 | { |
13259 | gdb_assert (templ_func != NULL); | |
13260 | ||
2f4732b0 | 13261 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13262 | templ_func->template_arguments |
8d749320 SM |
13263 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13264 | templ_func->n_template_arguments); | |
34eaf542 | 13265 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13266 | template_args.data (), |
34eaf542 | 13267 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13268 | |
13269 | /* Make sure that the symtab is set on the new symbols. Even | |
13270 | though they don't appear in this symtab directly, other parts | |
13271 | of gdb assume that symbols do, and this is reasonably | |
13272 | true. */ | |
8634679f | 13273 | for (symbol *sym : template_args) |
3e1d3d8c | 13274 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13275 | } |
13276 | ||
208d8187 JB |
13277 | /* In C++, we can have functions nested inside functions (e.g., when |
13278 | a function declares a class that has methods). This means that | |
13279 | when we finish processing a function scope, we may need to go | |
13280 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13281 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13282 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13283 | |
921e78cf JB |
13284 | /* If we've finished processing a top-level function, subsequent |
13285 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13286 | if (cu->get_builder ()->outermost_context_p ()) |
13287 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13288 | } |
13289 | ||
13290 | /* Process all the DIES contained within a lexical block scope. Start | |
13291 | a new scope, process the dies, and then close the scope. */ | |
13292 | ||
13293 | static void | |
e7c27a73 | 13294 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13295 | { |
5e22e966 | 13296 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13297 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13298 | CORE_ADDR lowpc, highpc; |
13299 | struct die_info *child_die; | |
e142c38c DJ |
13300 | CORE_ADDR baseaddr; |
13301 | ||
b3b3bada | 13302 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13303 | |
13304 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13305 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13306 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13307 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13308 | describe ranges. */ |
e385593e JK |
13309 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13310 | { | |
13311 | case PC_BOUNDS_NOT_PRESENT: | |
13312 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13313 | there was no wrapping by that DW_TAG_lexical_block. | |
13314 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13315 | for (child_die = die->child; | |
13316 | child_die != NULL && child_die->tag; | |
436c571c | 13317 | child_die = child_die->sibling) |
4f7bc5ed TT |
13318 | { |
13319 | /* We might already be processing this DIE. This can happen | |
13320 | in an unusual circumstance -- where a subroutine A | |
13321 | appears lexically in another subroutine B, but A actually | |
13322 | inlines B. The recursion is broken here, rather than in | |
13323 | inherit_abstract_dies, because it seems better to simply | |
13324 | drop concrete children here. */ | |
13325 | if (!child_die->in_process) | |
13326 | process_die (child_die, cu); | |
13327 | } | |
e385593e JK |
13328 | return; |
13329 | case PC_BOUNDS_INVALID: | |
13330 | return; | |
13331 | } | |
3e29f34a MR |
13332 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13333 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13334 | |
c24bdb02 | 13335 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13336 | if (die->child != NULL) |
c906108c | 13337 | { |
639d11d3 | 13338 | child_die = die->child; |
c906108c SS |
13339 | while (child_die && child_die->tag) |
13340 | { | |
e7c27a73 | 13341 | process_die (child_die, cu); |
436c571c | 13342 | child_die = child_die->sibling; |
c906108c SS |
13343 | } |
13344 | } | |
3ea89b92 | 13345 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13346 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13347 | |
c24bdb02 KS |
13348 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13349 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13350 | { |
801e3a5b | 13351 | struct block *block |
c24bdb02 | 13352 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13353 | cstk.start_addr, highpc); |
801e3a5b JB |
13354 | |
13355 | /* Note that recording ranges after traversing children, as we | |
13356 | do here, means that recording a parent's ranges entails | |
13357 | walking across all its children's ranges as they appear in | |
13358 | the address map, which is quadratic behavior. | |
13359 | ||
13360 | It would be nicer to record the parent's ranges before | |
13361 | traversing its children, simply overriding whatever you find | |
13362 | there. But since we don't even decide whether to create a | |
13363 | block until after we've traversed its children, that's hard | |
13364 | to do. */ | |
13365 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13366 | } |
c24bdb02 KS |
13367 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13368 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13369 | } |
13370 | ||
216f72a1 | 13371 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13372 | |
13373 | static void | |
13374 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13375 | { | |
5e22e966 | 13376 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13377 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13378 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13379 | CORE_ADDR pc, baseaddr; |
13380 | struct attribute *attr; | |
13381 | struct call_site *call_site, call_site_local; | |
13382 | void **slot; | |
13383 | int nparams; | |
13384 | struct die_info *child_die; | |
13385 | ||
b3b3bada | 13386 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13387 | |
216f72a1 JK |
13388 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13389 | if (attr == NULL) | |
13390 | { | |
13391 | /* This was a pre-DWARF-5 GNU extension alias | |
13392 | for DW_AT_call_return_pc. */ | |
13393 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13394 | } | |
96408a79 SA |
13395 | if (!attr) |
13396 | { | |
b98664d3 | 13397 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13398 | "DIE %s [in module %s]"), |
13399 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13400 | return; |
13401 | } | |
cd6c91b4 | 13402 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13403 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13404 | |
13405 | if (cu->call_site_htab == NULL) | |
13406 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13407 | NULL, &objfile->objfile_obstack, | |
13408 | hashtab_obstack_allocate, NULL); | |
13409 | call_site_local.pc = pc; | |
13410 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13411 | if (*slot != NULL) | |
13412 | { | |
b98664d3 | 13413 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13414 | "DIE %s [in module %s]"), |
13415 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13416 | objfile_name (objfile)); |
96408a79 SA |
13417 | return; |
13418 | } | |
13419 | ||
13420 | /* Count parameters at the caller. */ | |
13421 | ||
13422 | nparams = 0; | |
13423 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13424 | child_die = child_die->sibling) |
96408a79 | 13425 | { |
216f72a1 JK |
13426 | if (child_die->tag != DW_TAG_call_site_parameter |
13427 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13428 | { |
b98664d3 | 13429 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13430 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13431 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13432 | objfile_name (objfile)); |
96408a79 SA |
13433 | continue; |
13434 | } | |
13435 | ||
13436 | nparams++; | |
13437 | } | |
13438 | ||
224c3ddb SM |
13439 | call_site |
13440 | = ((struct call_site *) | |
13441 | obstack_alloc (&objfile->objfile_obstack, | |
13442 | sizeof (*call_site) | |
13443 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13444 | *slot = call_site; |
13445 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13446 | call_site->pc = pc; | |
13447 | ||
216f72a1 JK |
13448 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13449 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13450 | { |
13451 | struct die_info *func_die; | |
13452 | ||
13453 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13454 | for (func_die = die->parent; | |
13455 | func_die && func_die->tag != DW_TAG_subprogram | |
13456 | && func_die->tag != DW_TAG_subroutine_type; | |
13457 | func_die = func_die->parent); | |
13458 | ||
216f72a1 JK |
13459 | /* DW_AT_call_all_calls is a superset |
13460 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13461 | if (func_die |
216f72a1 | 13462 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13463 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13464 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13465 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13466 | { | |
13467 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13468 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13469 | both the initial caller containing the real return address PC and | |
13470 | the final callee containing the current PC of a chain of tail | |
13471 | calls do not need to have the tail call list complete. But any | |
13472 | function candidate for a virtual tail call frame searched via | |
13473 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13474 | determined unambiguously. */ | |
13475 | } | |
13476 | else | |
13477 | { | |
13478 | struct type *func_type = NULL; | |
13479 | ||
13480 | if (func_die) | |
13481 | func_type = get_die_type (func_die, cu); | |
13482 | if (func_type != NULL) | |
13483 | { | |
78134374 | 13484 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13485 | |
13486 | /* Enlist this call site to the function. */ | |
13487 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13488 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13489 | } | |
13490 | else | |
b98664d3 | 13491 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13492 | "DIE %s [in module %s]"), |
13493 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13494 | } |
13495 | } | |
13496 | ||
216f72a1 JK |
13497 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13498 | if (attr == NULL) | |
13499 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13500 | if (attr == NULL) | |
13501 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13502 | if (attr == NULL) |
216f72a1 JK |
13503 | { |
13504 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13505 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13506 | } | |
96408a79 | 13507 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13508 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13509 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13510 | else if (attr->form_is_block ()) |
96408a79 SA |
13511 | { |
13512 | struct dwarf2_locexpr_baton *dlbaton; | |
13513 | ||
8d749320 | 13514 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13515 | dlbaton->data = DW_BLOCK (attr)->data; |
13516 | dlbaton->size = DW_BLOCK (attr)->size; | |
a50264ba | 13517 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13518 | dlbaton->per_cu = cu->per_cu; |
13519 | ||
13520 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13521 | } | |
cd6c91b4 | 13522 | else if (attr->form_is_ref ()) |
96408a79 | 13523 | { |
96408a79 SA |
13524 | struct dwarf2_cu *target_cu = cu; |
13525 | struct die_info *target_die; | |
13526 | ||
ac9ec31b | 13527 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13528 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13529 | if (die_is_declaration (target_die, target_cu)) |
13530 | { | |
7d45c7c3 | 13531 | const char *target_physname; |
9112db09 JK |
13532 | |
13533 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13534 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13535 | if (target_physname == NULL) |
9112db09 | 13536 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13537 | if (target_physname == NULL) |
b98664d3 | 13538 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13539 | "physname, for referencing DIE %s [in module %s]"), |
13540 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13541 | else |
7d455152 | 13542 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13543 | } |
13544 | else | |
13545 | { | |
13546 | CORE_ADDR lowpc; | |
13547 | ||
13548 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13549 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13550 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13551 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13552 | "low pc, for referencing DIE %s [in module %s]"), |
13553 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13554 | else |
3e29f34a MR |
13555 | { |
13556 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13557 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13558 | } | |
96408a79 SA |
13559 | } |
13560 | } | |
13561 | else | |
b98664d3 | 13562 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13563 | "block nor reference, for DIE %s [in module %s]"), |
13564 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13565 | |
13566 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 13567 | call_site->per_objfile = per_objfile; |
96408a79 SA |
13568 | |
13569 | for (child_die = die->child; | |
13570 | child_die && child_die->tag; | |
436c571c | 13571 | child_die = child_die->sibling) |
96408a79 | 13572 | { |
96408a79 | 13573 | struct call_site_parameter *parameter; |
1788b2d3 | 13574 | struct attribute *loc, *origin; |
96408a79 | 13575 | |
216f72a1 JK |
13576 | if (child_die->tag != DW_TAG_call_site_parameter |
13577 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13578 | { |
13579 | /* Already printed the complaint above. */ | |
13580 | continue; | |
13581 | } | |
13582 | ||
13583 | gdb_assert (call_site->parameter_count < nparams); | |
13584 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13585 | ||
1788b2d3 JK |
13586 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13587 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13588 | register is contained in DW_AT_call_value. */ |
96408a79 | 13589 | |
24c5c679 | 13590 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13591 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13592 | if (origin == NULL) | |
13593 | { | |
13594 | /* This was a pre-DWARF-5 GNU extension alias | |
13595 | for DW_AT_call_parameter. */ | |
13596 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13597 | } | |
cd6c91b4 | 13598 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13599 | { |
1788b2d3 | 13600 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13601 | |
0826b30a | 13602 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13603 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13604 | { |
13605 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13606 | binding can be done only inside one CU. Such referenced DIE | |
13607 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13608 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13609 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13610 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13611 | objfile_name (objfile)); |
d76b7dbc JK |
13612 | continue; |
13613 | } | |
9c541725 PA |
13614 | parameter->u.param_cu_off |
13615 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13616 | } |
4fc6c0d5 | 13617 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13618 | { |
b98664d3 | 13619 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13620 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13621 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13622 | continue; |
13623 | } | |
24c5c679 | 13624 | else |
96408a79 | 13625 | { |
24c5c679 JK |
13626 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13627 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13628 | if (parameter->u.dwarf_reg != -1) | |
13629 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13630 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13631 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13632 | ¶meter->u.fb_offset)) | |
13633 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13634 | else | |
13635 | { | |
b98664d3 | 13636 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13637 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13638 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13639 | "[in module %s]"), |
9d8780f0 | 13640 | sect_offset_str (child_die->sect_off), |
9c541725 | 13641 | objfile_name (objfile)); |
24c5c679 JK |
13642 | continue; |
13643 | } | |
96408a79 SA |
13644 | } |
13645 | ||
216f72a1 JK |
13646 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13647 | if (attr == NULL) | |
13648 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13649 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13650 | { |
b98664d3 | 13651 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13652 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13653 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13654 | objfile_name (objfile)); |
96408a79 SA |
13655 | continue; |
13656 | } | |
13657 | parameter->value = DW_BLOCK (attr)->data; | |
13658 | parameter->value_size = DW_BLOCK (attr)->size; | |
13659 | ||
13660 | /* Parameters are not pre-cleared by memset above. */ | |
13661 | parameter->data_value = NULL; | |
13662 | parameter->data_value_size = 0; | |
13663 | call_site->parameter_count++; | |
13664 | ||
216f72a1 JK |
13665 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13666 | if (attr == NULL) | |
13667 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13668 | if (attr != nullptr) |
96408a79 | 13669 | { |
4fc6c0d5 | 13670 | if (!attr->form_is_block ()) |
b98664d3 | 13671 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13672 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13673 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13674 | objfile_name (objfile)); |
96408a79 SA |
13675 | else |
13676 | { | |
13677 | parameter->data_value = DW_BLOCK (attr)->data; | |
13678 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13679 | } | |
13680 | } | |
13681 | } | |
13682 | } | |
13683 | ||
71a3c369 TT |
13684 | /* Helper function for read_variable. If DIE represents a virtual |
13685 | table, then return the type of the concrete object that is | |
13686 | associated with the virtual table. Otherwise, return NULL. */ | |
13687 | ||
13688 | static struct type * | |
13689 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13690 | { | |
13691 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13692 | if (attr == NULL) | |
13693 | return NULL; | |
13694 | ||
13695 | /* Find the type DIE. */ | |
13696 | struct die_info *type_die = NULL; | |
13697 | struct dwarf2_cu *type_cu = cu; | |
13698 | ||
cd6c91b4 | 13699 | if (attr->form_is_ref ()) |
71a3c369 TT |
13700 | type_die = follow_die_ref (die, attr, &type_cu); |
13701 | if (type_die == NULL) | |
13702 | return NULL; | |
13703 | ||
13704 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13705 | return NULL; | |
13706 | return die_containing_type (type_die, type_cu); | |
13707 | } | |
13708 | ||
13709 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13710 | ||
13711 | static void | |
13712 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13713 | { | |
13714 | struct rust_vtable_symbol *storage = NULL; | |
13715 | ||
13716 | if (cu->language == language_rust) | |
13717 | { | |
13718 | struct type *containing_type = rust_containing_type (die, cu); | |
13719 | ||
13720 | if (containing_type != NULL) | |
13721 | { | |
5e22e966 | 13722 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 13723 | |
8c14c3a3 | 13724 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 13725 | storage->concrete_type = containing_type; |
cf724bc9 | 13726 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13727 | } |
13728 | } | |
13729 | ||
e4a62c65 TV |
13730 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13731 | struct attribute *abstract_origin | |
13732 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13733 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13734 | if (res == NULL && loc && abstract_origin) | |
13735 | { | |
13736 | /* We have a variable without a name, but with a location and an abstract | |
13737 | origin. This may be a concrete instance of an abstract variable | |
13738 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13739 | later. */ | |
13740 | struct dwarf2_cu *origin_cu = cu; | |
13741 | struct die_info *origin_die | |
13742 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
13743 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13744 | per_objfile->per_bfd->abstract_to_concrete | |
13745 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 13746 | } |
71a3c369 TT |
13747 | } |
13748 | ||
43988095 JK |
13749 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13750 | reading .debug_rnglists. | |
13751 | Callback's type should be: | |
13752 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13753 | Return true if the attributes are present and valid, otherwise, | |
13754 | return false. */ | |
13755 | ||
13756 | template <typename Callback> | |
13757 | static bool | |
13758 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13759 | Callback &&callback) | |
13760 | { | |
976ca316 SM |
13761 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13762 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 13763 | bfd *obfd = objfile->obfd; |
43988095 | 13764 | /* Base address selection entry. */ |
2b24b6e4 | 13765 | gdb::optional<CORE_ADDR> base; |
43988095 | 13766 | const gdb_byte *buffer; |
43988095 JK |
13767 | CORE_ADDR baseaddr; |
13768 | bool overflow = false; | |
13769 | ||
43988095 JK |
13770 | base = cu->base_address; |
13771 | ||
976ca316 SM |
13772 | per_objfile->per_bfd->rnglists.read (objfile); |
13773 | if (offset >= per_objfile->per_bfd->rnglists.size) | |
43988095 | 13774 | { |
b98664d3 | 13775 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13776 | offset); |
13777 | return false; | |
13778 | } | |
976ca316 | 13779 | buffer = per_objfile->per_bfd->rnglists.buffer + offset; |
43988095 | 13780 | |
b3b3bada | 13781 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13782 | |
13783 | while (1) | |
13784 | { | |
7814882a JK |
13785 | /* Initialize it due to a false compiler warning. */ |
13786 | CORE_ADDR range_beginning = 0, range_end = 0; | |
976ca316 SM |
13787 | const gdb_byte *buf_end = (per_objfile->per_bfd->rnglists.buffer |
13788 | + per_objfile->per_bfd->rnglists.size); | |
43988095 JK |
13789 | unsigned int bytes_read; |
13790 | ||
13791 | if (buffer == buf_end) | |
13792 | { | |
13793 | overflow = true; | |
13794 | break; | |
13795 | } | |
13796 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13797 | switch (rlet) | |
13798 | { | |
13799 | case DW_RLE_end_of_list: | |
13800 | break; | |
13801 | case DW_RLE_base_address: | |
13802 | if (buffer + cu->header.addr_size > buf_end) | |
13803 | { | |
13804 | overflow = true; | |
13805 | break; | |
13806 | } | |
c8a7a66f | 13807 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13808 | buffer += bytes_read; |
13809 | break; | |
13810 | case DW_RLE_start_length: | |
13811 | if (buffer + cu->header.addr_size > buf_end) | |
13812 | { | |
13813 | overflow = true; | |
13814 | break; | |
13815 | } | |
c8a7a66f TT |
13816 | range_beginning = cu->header.read_address (obfd, buffer, |
13817 | &bytes_read); | |
43988095 JK |
13818 | buffer += bytes_read; |
13819 | range_end = (range_beginning | |
13820 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13821 | buffer += bytes_read; | |
13822 | if (buffer > buf_end) | |
13823 | { | |
13824 | overflow = true; | |
13825 | break; | |
13826 | } | |
13827 | break; | |
13828 | case DW_RLE_offset_pair: | |
13829 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13830 | buffer += bytes_read; | |
13831 | if (buffer > buf_end) | |
13832 | { | |
13833 | overflow = true; | |
13834 | break; | |
13835 | } | |
13836 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13837 | buffer += bytes_read; | |
13838 | if (buffer > buf_end) | |
13839 | { | |
13840 | overflow = true; | |
13841 | break; | |
13842 | } | |
13843 | break; | |
13844 | case DW_RLE_start_end: | |
13845 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13846 | { | |
13847 | overflow = true; | |
13848 | break; | |
13849 | } | |
c8a7a66f TT |
13850 | range_beginning = cu->header.read_address (obfd, buffer, |
13851 | &bytes_read); | |
43988095 | 13852 | buffer += bytes_read; |
c8a7a66f | 13853 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13854 | buffer += bytes_read; |
13855 | break; | |
13856 | default: | |
b98664d3 | 13857 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13858 | return false; |
13859 | } | |
13860 | if (rlet == DW_RLE_end_of_list || overflow) | |
13861 | break; | |
13862 | if (rlet == DW_RLE_base_address) | |
13863 | continue; | |
13864 | ||
2b24b6e4 | 13865 | if (!base.has_value ()) |
43988095 JK |
13866 | { |
13867 | /* We have no valid base address for the ranges | |
13868 | data. */ | |
b98664d3 | 13869 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13870 | return false; |
13871 | } | |
13872 | ||
13873 | if (range_beginning > range_end) | |
13874 | { | |
13875 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13876 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13877 | return false; |
13878 | } | |
13879 | ||
13880 | /* Empty range entries have no effect. */ | |
13881 | if (range_beginning == range_end) | |
13882 | continue; | |
13883 | ||
2b24b6e4 TT |
13884 | range_beginning += *base; |
13885 | range_end += *base; | |
43988095 JK |
13886 | |
13887 | /* A not-uncommon case of bad debug info. | |
13888 | Don't pollute the addrmap with bad data. */ | |
13889 | if (range_beginning + baseaddr == 0 | |
976ca316 | 13890 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 13891 | { |
b98664d3 | 13892 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
13893 | " [in module %s]"), objfile_name (objfile)); |
13894 | continue; | |
13895 | } | |
13896 | ||
13897 | callback (range_beginning, range_end); | |
13898 | } | |
13899 | ||
13900 | if (overflow) | |
13901 | { | |
b98664d3 | 13902 | complaint (_("Offset %d is not terminated " |
43988095 JK |
13903 | "for DW_AT_ranges attribute"), |
13904 | offset); | |
13905 | return false; | |
13906 | } | |
13907 | ||
13908 | return true; | |
13909 | } | |
13910 | ||
13911 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
13912 | Callback's type should be: | |
13913 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 13914 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 13915 | |
43988095 | 13916 | template <typename Callback> |
43039443 | 13917 | static int |
5f46c5a5 | 13918 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 13919 | Callback &&callback) |
43039443 | 13920 | { |
5e22e966 SM |
13921 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13922 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
13923 | struct comp_unit_head *cu_header = &cu->header; |
13924 | bfd *obfd = objfile->obfd; | |
13925 | unsigned int addr_size = cu_header->addr_size; | |
13926 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
13927 | /* Base address selection entry. */ | |
2b24b6e4 | 13928 | gdb::optional<CORE_ADDR> base; |
43039443 | 13929 | unsigned int dummy; |
d521ce57 | 13930 | const gdb_byte *buffer; |
ff013f42 | 13931 | CORE_ADDR baseaddr; |
43039443 | 13932 | |
43988095 JK |
13933 | if (cu_header->version >= 5) |
13934 | return dwarf2_rnglists_process (offset, cu, callback); | |
13935 | ||
d00adf39 | 13936 | base = cu->base_address; |
43039443 | 13937 | |
5e22e966 SM |
13938 | per_objfile->per_bfd->ranges.read (objfile); |
13939 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 13940 | { |
b98664d3 | 13941 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
13942 | offset); |
13943 | return 0; | |
13944 | } | |
5e22e966 | 13945 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 13946 | |
b3b3bada | 13947 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 13948 | |
43039443 JK |
13949 | while (1) |
13950 | { | |
13951 | CORE_ADDR range_beginning, range_end; | |
13952 | ||
c8a7a66f | 13953 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 13954 | buffer += addr_size; |
c8a7a66f | 13955 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
13956 | buffer += addr_size; |
13957 | offset += 2 * addr_size; | |
13958 | ||
13959 | /* An end of list marker is a pair of zero addresses. */ | |
13960 | if (range_beginning == 0 && range_end == 0) | |
13961 | /* Found the end of list entry. */ | |
13962 | break; | |
13963 | ||
13964 | /* Each base address selection entry is a pair of 2 values. | |
13965 | The first is the largest possible address, the second is | |
13966 | the base address. Check for a base address here. */ | |
13967 | if ((range_beginning & mask) == mask) | |
13968 | { | |
28d2bfb9 AB |
13969 | /* If we found the largest possible address, then we already |
13970 | have the base address in range_end. */ | |
13971 | base = range_end; | |
43039443 JK |
13972 | continue; |
13973 | } | |
13974 | ||
2b24b6e4 | 13975 | if (!base.has_value ()) |
43039443 JK |
13976 | { |
13977 | /* We have no valid base address for the ranges | |
13978 | data. */ | |
b98664d3 | 13979 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
13980 | return 0; |
13981 | } | |
13982 | ||
9277c30c UW |
13983 | if (range_beginning > range_end) |
13984 | { | |
13985 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13986 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
13987 | return 0; |
13988 | } | |
13989 | ||
13990 | /* Empty range entries have no effect. */ | |
13991 | if (range_beginning == range_end) | |
13992 | continue; | |
13993 | ||
2b24b6e4 TT |
13994 | range_beginning += *base; |
13995 | range_end += *base; | |
43039443 | 13996 | |
01093045 DE |
13997 | /* A not-uncommon case of bad debug info. |
13998 | Don't pollute the addrmap with bad data. */ | |
13999 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14000 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14001 | { |
b98664d3 | 14002 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14003 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14004 | continue; |
14005 | } | |
14006 | ||
5f46c5a5 JK |
14007 | callback (range_beginning, range_end); |
14008 | } | |
14009 | ||
14010 | return 1; | |
14011 | } | |
14012 | ||
14013 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14014 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14015 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14016 | ||
14017 | static int | |
14018 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14019 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 14020 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 14021 | { |
5e22e966 | 14022 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14023 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14024 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14025 | int low_set = 0; |
14026 | CORE_ADDR low = 0; | |
14027 | CORE_ADDR high = 0; | |
14028 | int retval; | |
14029 | ||
14030 | retval = dwarf2_ranges_process (offset, cu, | |
14031 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14032 | { | |
9277c30c | 14033 | if (ranges_pst != NULL) |
3e29f34a MR |
14034 | { |
14035 | CORE_ADDR lowpc; | |
14036 | CORE_ADDR highpc; | |
14037 | ||
79748972 TT |
14038 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14039 | range_beginning + baseaddr) | |
14040 | - baseaddr); | |
14041 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14042 | range_end + baseaddr) | |
14043 | - baseaddr); | |
d320c2b5 TT |
14044 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14045 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14046 | } |
ff013f42 | 14047 | |
43039443 JK |
14048 | /* FIXME: This is recording everything as a low-high |
14049 | segment of consecutive addresses. We should have a | |
14050 | data structure for discontiguous block ranges | |
14051 | instead. */ | |
14052 | if (! low_set) | |
14053 | { | |
14054 | low = range_beginning; | |
14055 | high = range_end; | |
14056 | low_set = 1; | |
14057 | } | |
14058 | else | |
14059 | { | |
14060 | if (range_beginning < low) | |
14061 | low = range_beginning; | |
14062 | if (range_end > high) | |
14063 | high = range_end; | |
14064 | } | |
5f46c5a5 JK |
14065 | }); |
14066 | if (!retval) | |
14067 | return 0; | |
43039443 JK |
14068 | |
14069 | if (! low_set) | |
14070 | /* If the first entry is an end-of-list marker, the range | |
14071 | describes an empty scope, i.e. no instructions. */ | |
14072 | return 0; | |
14073 | ||
14074 | if (low_return) | |
14075 | *low_return = low; | |
14076 | if (high_return) | |
14077 | *high_return = high; | |
14078 | return 1; | |
14079 | } | |
14080 | ||
3a2b436a JK |
14081 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14082 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14083 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14084 | |
3a2b436a | 14085 | static enum pc_bounds_kind |
af34e669 | 14086 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14087 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14088 | dwarf2_psymtab *pst) |
c906108c | 14089 | { |
976ca316 | 14090 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14091 | struct attribute *attr; |
91da1414 | 14092 | struct attribute *attr_high; |
af34e669 DJ |
14093 | CORE_ADDR low = 0; |
14094 | CORE_ADDR high = 0; | |
e385593e | 14095 | enum pc_bounds_kind ret; |
c906108c | 14096 | |
91da1414 MW |
14097 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14098 | if (attr_high) | |
af34e669 | 14099 | { |
e142c38c | 14100 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14101 | if (attr != nullptr) |
91da1414 | 14102 | { |
cd6c91b4 TT |
14103 | low = attr->value_as_address (); |
14104 | high = attr_high->value_as_address (); | |
14105 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 14106 | high += low; |
91da1414 | 14107 | } |
af34e669 DJ |
14108 | else |
14109 | /* Found high w/o low attribute. */ | |
e385593e | 14110 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14111 | |
14112 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14113 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14114 | } |
c906108c | 14115 | else |
af34e669 | 14116 | { |
e142c38c | 14117 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14118 | if (attr != NULL) |
14119 | { | |
18a8505e | 14120 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14121 | We take advantage of the fact that DW_AT_ranges does not appear |
14122 | in DW_TAG_compile_unit of DWO files. */ | |
14123 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14124 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14125 | + (need_ranges_base | |
14126 | ? cu->ranges_base | |
14127 | : 0)); | |
2e3cf129 | 14128 | |
af34e669 | 14129 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14130 | .debug_ranges section. */ |
2e3cf129 | 14131 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14132 | return PC_BOUNDS_INVALID; |
43039443 | 14133 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14134 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14135 | } |
e385593e JK |
14136 | else |
14137 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14138 | } |
c906108c | 14139 | |
48fbe735 | 14140 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14141 | if (high <= low) |
e385593e | 14142 | return PC_BOUNDS_INVALID; |
c906108c SS |
14143 | |
14144 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14145 | eliminate duplicate copies of functions and vtables and such. | |
14146 | The linker will arbitrarily choose one and discard the others. | |
14147 | The AT_*_pc values for such functions refer to local labels in | |
14148 | these sections. If the section from that file was discarded, the | |
14149 | labels are not in the output, so the relocs get a value of 0. | |
14150 | If this is a discarded function, mark the pc bounds as invalid, | |
14151 | so that GDB will ignore it. */ | |
976ca316 | 14152 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14153 | return PC_BOUNDS_INVALID; |
c906108c SS |
14154 | |
14155 | *lowpc = low; | |
96408a79 SA |
14156 | if (highpc) |
14157 | *highpc = high; | |
af34e669 | 14158 | return ret; |
c906108c SS |
14159 | } |
14160 | ||
b084d499 JB |
14161 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14162 | its low and high PC addresses. Do nothing if these addresses could not | |
14163 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14164 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14165 | ||
14166 | static void | |
14167 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14168 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14169 | struct dwarf2_cu *cu) | |
14170 | { | |
14171 | CORE_ADDR low, high; | |
14172 | struct die_info *child = die->child; | |
14173 | ||
e385593e | 14174 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14175 | { |
325fac50 PA |
14176 | *lowpc = std::min (*lowpc, low); |
14177 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14178 | } |
14179 | ||
14180 | /* If the language does not allow nested subprograms (either inside | |
14181 | subprograms or lexical blocks), we're done. */ | |
14182 | if (cu->language != language_ada) | |
14183 | return; | |
6e70227d | 14184 | |
b084d499 JB |
14185 | /* Check all the children of the given DIE. If it contains nested |
14186 | subprograms, then check their pc bounds. Likewise, we need to | |
14187 | check lexical blocks as well, as they may also contain subprogram | |
14188 | definitions. */ | |
14189 | while (child && child->tag) | |
14190 | { | |
14191 | if (child->tag == DW_TAG_subprogram | |
14192 | || child->tag == DW_TAG_lexical_block) | |
14193 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14194 | child = child->sibling; |
b084d499 JB |
14195 | } |
14196 | } | |
14197 | ||
fae299cd DC |
14198 | /* Get the low and high pc's represented by the scope DIE, and store |
14199 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14200 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14201 | ||
14202 | static void | |
14203 | get_scope_pc_bounds (struct die_info *die, | |
14204 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14205 | struct dwarf2_cu *cu) | |
14206 | { | |
14207 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14208 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14209 | CORE_ADDR current_low, current_high; | |
14210 | ||
3a2b436a | 14211 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14212 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14213 | { |
14214 | best_low = current_low; | |
14215 | best_high = current_high; | |
14216 | } | |
14217 | else | |
14218 | { | |
14219 | struct die_info *child = die->child; | |
14220 | ||
14221 | while (child && child->tag) | |
14222 | { | |
14223 | switch (child->tag) { | |
14224 | case DW_TAG_subprogram: | |
b084d499 | 14225 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14226 | break; |
14227 | case DW_TAG_namespace: | |
f55ee35c | 14228 | case DW_TAG_module: |
fae299cd DC |
14229 | /* FIXME: carlton/2004-01-16: Should we do this for |
14230 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14231 | that current GCC's always emit the DIEs corresponding | |
14232 | to definitions of methods of classes as children of a | |
14233 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14234 | the DIEs giving the declarations, which could be | |
14235 | anywhere). But I don't see any reason why the | |
14236 | standards says that they have to be there. */ | |
14237 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14238 | ||
14239 | if (current_low != ((CORE_ADDR) -1)) | |
14240 | { | |
325fac50 PA |
14241 | best_low = std::min (best_low, current_low); |
14242 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14243 | } |
14244 | break; | |
14245 | default: | |
0963b4bd | 14246 | /* Ignore. */ |
fae299cd DC |
14247 | break; |
14248 | } | |
14249 | ||
436c571c | 14250 | child = child->sibling; |
fae299cd DC |
14251 | } |
14252 | } | |
14253 | ||
14254 | *lowpc = best_low; | |
14255 | *highpc = best_high; | |
14256 | } | |
14257 | ||
801e3a5b JB |
14258 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14259 | in DIE. */ | |
380bca97 | 14260 | |
801e3a5b JB |
14261 | static void |
14262 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14263 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14264 | { | |
5e22e966 | 14265 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14266 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14267 | struct attribute *attr; |
91da1414 | 14268 | struct attribute *attr_high; |
801e3a5b | 14269 | |
91da1414 MW |
14270 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14271 | if (attr_high) | |
801e3a5b | 14272 | { |
801e3a5b | 14273 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14274 | if (attr != nullptr) |
801e3a5b | 14275 | { |
cd6c91b4 TT |
14276 | CORE_ADDR low = attr->value_as_address (); |
14277 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 14278 | |
cd6c91b4 | 14279 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14280 | high += low; |
9a619af0 | 14281 | |
3e29f34a MR |
14282 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14283 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14284 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14285 | } |
14286 | } | |
14287 | ||
14288 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14289 | if (attr != nullptr) |
801e3a5b | 14290 | { |
18a8505e | 14291 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14292 | We take advantage of the fact that DW_AT_ranges does not appear |
14293 | in DW_TAG_compile_unit of DWO files. */ | |
14294 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14295 | |
14296 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14297 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14298 | unsigned long offset = (DW_UNSND (attr) |
14299 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14300 | |
2d5f09ec | 14301 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14302 | dwarf2_ranges_process (offset, cu, |
14303 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14304 | { | |
58fdfd2c JK |
14305 | start += baseaddr; |
14306 | end += baseaddr; | |
5f46c5a5 JK |
14307 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14308 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14309 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14310 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14311 | }); |
2d5f09ec KB |
14312 | |
14313 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14314 | } |
14315 | } | |
14316 | ||
685b1105 JK |
14317 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14318 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14319 | |
685b1105 JK |
14320 | static void |
14321 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14322 | { |
38360086 | 14323 | int major, minor; |
60d5a603 JK |
14324 | |
14325 | if (cu->producer == NULL) | |
14326 | { | |
14327 | /* For unknown compilers expect their behavior is DWARF version | |
14328 | compliant. | |
14329 | ||
14330 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14331 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14332 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14333 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14334 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14335 | } |
b1ffba5a | 14336 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14337 | { |
38360086 MW |
14338 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14339 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14340 | } |
5230b05a | 14341 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14342 | { |
14343 | cu->producer_is_icc = true; | |
14344 | cu->producer_is_icc_lt_14 = major < 14; | |
14345 | } | |
c258c396 JD |
14346 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14347 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14348 | else |
14349 | { | |
14350 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14351 | compliant. */ | |
60d5a603 JK |
14352 | } |
14353 | ||
9068261f | 14354 | cu->checked_producer = true; |
685b1105 | 14355 | } |
ba919b58 | 14356 | |
685b1105 JK |
14357 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14358 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14359 | during 4.6.0 experimental. */ | |
14360 | ||
9068261f | 14361 | static bool |
685b1105 JK |
14362 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14363 | { | |
14364 | if (!cu->checked_producer) | |
14365 | check_producer (cu); | |
14366 | ||
14367 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14368 | } |
14369 | ||
c258c396 JD |
14370 | |
14371 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14372 | with incorrect is_stmt attributes. */ | |
14373 | ||
14374 | static bool | |
14375 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14376 | { | |
14377 | if (!cu->checked_producer) | |
14378 | check_producer (cu); | |
14379 | ||
14380 | return cu->producer_is_codewarrior; | |
14381 | } | |
14382 | ||
405feb71 | 14383 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14384 | DW_AT_accessibility. */ |
14385 | ||
14386 | static enum dwarf_access_attribute | |
14387 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14388 | { | |
14389 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14390 | { | |
14391 | /* The default DWARF 2 accessibility for members is public, the default | |
14392 | accessibility for inheritance is private. */ | |
14393 | ||
14394 | if (die->tag != DW_TAG_inheritance) | |
14395 | return DW_ACCESS_public; | |
14396 | else | |
14397 | return DW_ACCESS_private; | |
14398 | } | |
14399 | else | |
14400 | { | |
14401 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14402 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14403 | depends on the container kind. */ | |
14404 | ||
14405 | if (die->parent->tag == DW_TAG_class_type) | |
14406 | return DW_ACCESS_private; | |
14407 | else | |
14408 | return DW_ACCESS_public; | |
14409 | } | |
14410 | } | |
14411 | ||
74ac6d43 TT |
14412 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14413 | offset. If the attribute was not found return 0, otherwise return | |
14414 | 1. If it was found but could not properly be handled, set *OFFSET | |
14415 | to 0. */ | |
14416 | ||
14417 | static int | |
14418 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14419 | LONGEST *offset) | |
14420 | { | |
14421 | struct attribute *attr; | |
14422 | ||
14423 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14424 | if (attr != NULL) | |
14425 | { | |
14426 | *offset = 0; | |
14427 | ||
14428 | /* Note that we do not check for a section offset first here. | |
14429 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14430 | so if we see it, we can assume that a constant form is really | |
14431 | a constant and not a section offset. */ | |
cd6c91b4 | 14432 | if (attr->form_is_constant ()) |
0826b30a | 14433 | *offset = attr->constant_value (0); |
cd6c91b4 | 14434 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14435 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14436 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14437 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14438 | else | |
14439 | dwarf2_complex_location_expr_complaint (); | |
14440 | ||
14441 | return 1; | |
14442 | } | |
14443 | ||
14444 | return 0; | |
14445 | } | |
14446 | ||
7d79de9a TT |
14447 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14448 | ||
14449 | static void | |
14450 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14451 | struct field *field) | |
14452 | { | |
14453 | struct attribute *attr; | |
14454 | ||
14455 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14456 | if (attr != NULL) | |
14457 | { | |
14458 | if (attr->form_is_constant ()) | |
14459 | { | |
14460 | LONGEST offset = attr->constant_value (0); | |
14461 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14462 | } | |
14463 | else if (attr->form_is_section_offset ()) | |
14464 | dwarf2_complex_location_expr_complaint (); | |
14465 | else if (attr->form_is_block ()) | |
14466 | { | |
14467 | bool handled; | |
14468 | CORE_ADDR offset = decode_locdesc (DW_BLOCK (attr), cu, &handled); | |
14469 | if (handled) | |
14470 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14471 | else | |
14472 | { | |
5e22e966 SM |
14473 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14474 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14475 | struct dwarf2_locexpr_baton *dlbaton |
14476 | = XOBNEW (&objfile->objfile_obstack, | |
14477 | struct dwarf2_locexpr_baton); | |
14478 | dlbaton->data = DW_BLOCK (attr)->data; | |
14479 | dlbaton->size = DW_BLOCK (attr)->size; | |
14480 | /* When using this baton, we want to compute the address | |
14481 | of the field, not the value. This is why | |
14482 | is_reference is set to false here. */ | |
14483 | dlbaton->is_reference = false; | |
5e22e966 | 14484 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14485 | dlbaton->per_cu = cu->per_cu; |
14486 | ||
14487 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14488 | } | |
14489 | } | |
14490 | else | |
14491 | dwarf2_complex_location_expr_complaint (); | |
14492 | } | |
14493 | } | |
14494 | ||
c906108c SS |
14495 | /* Add an aggregate field to the field list. */ |
14496 | ||
14497 | static void | |
107d2387 | 14498 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14499 | struct dwarf2_cu *cu) |
6e70227d | 14500 | { |
5e22e966 | 14501 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14502 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14503 | struct nextfield *new_field; |
14504 | struct attribute *attr; | |
14505 | struct field *fp; | |
15d034d0 | 14506 | const char *fieldname = ""; |
c906108c | 14507 | |
7d0ccb61 DJ |
14508 | if (die->tag == DW_TAG_inheritance) |
14509 | { | |
be2daae6 TT |
14510 | fip->baseclasses.emplace_back (); |
14511 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14512 | } |
14513 | else | |
14514 | { | |
be2daae6 TT |
14515 | fip->fields.emplace_back (); |
14516 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14517 | } |
be2daae6 | 14518 | |
9c6a1327 TT |
14519 | new_field->offset = die->sect_off; |
14520 | ||
e142c38c | 14521 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14522 | if (attr != nullptr) |
c906108c | 14523 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14524 | else |
14525 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14526 | if (new_field->accessibility != DW_ACCESS_public) |
14527 | fip->non_public_fields = 1; | |
60d5a603 | 14528 | |
e142c38c | 14529 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14530 | if (attr != nullptr) |
c906108c | 14531 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14532 | else |
14533 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14534 | |
14535 | fp = &new_field->field; | |
a9a9bd0f | 14536 | |
e142c38c | 14537 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14538 | { |
a9a9bd0f | 14539 | /* Data member other than a C++ static data member. */ |
6e70227d | 14540 | |
c906108c | 14541 | /* Get type of field. */ |
5d14b6e5 | 14542 | fp->set_type (die_type (die, cu)); |
c906108c | 14543 | |
d6a843b5 | 14544 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14545 | |
c906108c | 14546 | /* Get bit size of field (zero if none). */ |
e142c38c | 14547 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14548 | if (attr != nullptr) |
c906108c SS |
14549 | { |
14550 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14551 | } | |
14552 | else | |
14553 | { | |
14554 | FIELD_BITSIZE (*fp) = 0; | |
14555 | } | |
14556 | ||
14557 | /* Get bit offset of field. */ | |
7d79de9a | 14558 | handle_data_member_location (die, cu, fp); |
e142c38c | 14559 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14560 | if (attr != nullptr) |
c906108c | 14561 | { |
d5a22e77 | 14562 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14563 | { |
14564 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14565 | additional bit offset from the MSB of the containing |
14566 | anonymous object to the MSB of the field. We don't | |
14567 | have to do anything special since we don't need to | |
14568 | know the size of the anonymous object. */ | |
f41f5e61 | 14569 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14570 | } |
14571 | else | |
14572 | { | |
14573 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14574 | MSB of the anonymous object, subtract off the number of |
14575 | bits from the MSB of the field to the MSB of the | |
14576 | object, and then subtract off the number of bits of | |
14577 | the field itself. The result is the bit offset of | |
14578 | the LSB of the field. */ | |
c906108c SS |
14579 | int anonymous_size; |
14580 | int bit_offset = DW_UNSND (attr); | |
14581 | ||
e142c38c | 14582 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14583 | if (attr != nullptr) |
c906108c SS |
14584 | { |
14585 | /* The size of the anonymous object containing | |
14586 | the bit field is explicit, so use the | |
14587 | indicated size (in bytes). */ | |
14588 | anonymous_size = DW_UNSND (attr); | |
14589 | } | |
14590 | else | |
14591 | { | |
14592 | /* The size of the anonymous object containing | |
14593 | the bit field must be inferred from the type | |
14594 | attribute of the data member containing the | |
14595 | bit field. */ | |
5d14b6e5 | 14596 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 14597 | } |
f41f5e61 PA |
14598 | SET_FIELD_BITPOS (*fp, |
14599 | (FIELD_BITPOS (*fp) | |
14600 | + anonymous_size * bits_per_byte | |
14601 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14602 | } |
14603 | } | |
da5b30da AA |
14604 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14605 | if (attr != NULL) | |
14606 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14607 | + attr->constant_value (0))); |
c906108c SS |
14608 | |
14609 | /* Get name of field. */ | |
39cbfefa DJ |
14610 | fieldname = dwarf2_name (die, cu); |
14611 | if (fieldname == NULL) | |
14612 | fieldname = ""; | |
d8151005 DJ |
14613 | |
14614 | /* The name is already allocated along with this objfile, so we don't | |
14615 | need to duplicate it for the type. */ | |
14616 | fp->name = fieldname; | |
c906108c SS |
14617 | |
14618 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14619 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14620 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14621 | { |
d48cc9dd | 14622 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14623 | new_field->accessibility = DW_ACCESS_private; |
14624 | fip->non_public_fields = 1; | |
14625 | } | |
14626 | } | |
a9a9bd0f | 14627 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14628 | { |
a9a9bd0f DC |
14629 | /* C++ static member. */ |
14630 | ||
14631 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14632 | is a declaration, but all versions of G++ as of this writing | |
14633 | (so through at least 3.2.1) incorrectly generate | |
14634 | DW_TAG_variable tags. */ | |
6e70227d | 14635 | |
ff355380 | 14636 | const char *physname; |
c906108c | 14637 | |
a9a9bd0f | 14638 | /* Get name of field. */ |
39cbfefa DJ |
14639 | fieldname = dwarf2_name (die, cu); |
14640 | if (fieldname == NULL) | |
c906108c SS |
14641 | return; |
14642 | ||
254e6b9e | 14643 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14644 | if (attr |
14645 | /* Only create a symbol if this is an external value. | |
14646 | new_symbol checks this and puts the value in the global symbol | |
14647 | table, which we want. If it is not external, new_symbol | |
14648 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14649 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14650 | { |
14651 | /* A static const member, not much different than an enum as far as | |
14652 | we're concerned, except that we can support more types. */ | |
14653 | new_symbol (die, NULL, cu); | |
14654 | } | |
14655 | ||
2df3850c | 14656 | /* Get physical name. */ |
ff355380 | 14657 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14658 | |
d8151005 DJ |
14659 | /* The name is already allocated along with this objfile, so we don't |
14660 | need to duplicate it for the type. */ | |
14661 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 14662 | fp->set_type (die_type (die, cu)); |
d8151005 | 14663 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14664 | } |
14665 | else if (die->tag == DW_TAG_inheritance) | |
14666 | { | |
74ac6d43 | 14667 | /* C++ base class field. */ |
7d79de9a | 14668 | handle_data_member_location (die, cu, fp); |
c906108c | 14669 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
14670 | fp->set_type (die_type (die, cu)); |
14671 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 14672 | } |
2ddeaf8a TT |
14673 | else |
14674 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14675 | } |
14676 | ||
883fd55a KS |
14677 | /* Can the type given by DIE define another type? */ |
14678 | ||
14679 | static bool | |
14680 | type_can_define_types (const struct die_info *die) | |
14681 | { | |
14682 | switch (die->tag) | |
14683 | { | |
14684 | case DW_TAG_typedef: | |
14685 | case DW_TAG_class_type: | |
14686 | case DW_TAG_structure_type: | |
14687 | case DW_TAG_union_type: | |
14688 | case DW_TAG_enumeration_type: | |
14689 | return true; | |
14690 | ||
14691 | default: | |
14692 | return false; | |
14693 | } | |
14694 | } | |
14695 | ||
14696 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14697 | |
14698 | static void | |
883fd55a KS |
14699 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14700 | struct dwarf2_cu *cu) | |
6e70227d | 14701 | { |
be2daae6 TT |
14702 | struct decl_field fp; |
14703 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14704 | |
883fd55a | 14705 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14706 | |
883fd55a | 14707 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14708 | fp.name = dwarf2_name (die, cu); |
14709 | fp.type = read_type_die (die, cu); | |
98751a41 | 14710 | |
c191a687 KS |
14711 | /* Save accessibility. */ |
14712 | enum dwarf_access_attribute accessibility; | |
14713 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14714 | if (attr != NULL) | |
14715 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14716 | else | |
14717 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14718 | switch (accessibility) | |
14719 | { | |
14720 | case DW_ACCESS_public: | |
14721 | /* The assumed value if neither private nor protected. */ | |
14722 | break; | |
14723 | case DW_ACCESS_private: | |
be2daae6 | 14724 | fp.is_private = 1; |
c191a687 KS |
14725 | break; |
14726 | case DW_ACCESS_protected: | |
be2daae6 | 14727 | fp.is_protected = 1; |
c191a687 KS |
14728 | break; |
14729 | default: | |
b98664d3 | 14730 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14731 | } |
14732 | ||
883fd55a | 14733 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14734 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14735 | else |
be2daae6 | 14736 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14737 | } |
14738 | ||
9c6a1327 TT |
14739 | /* A convenience typedef that's used when finding the discriminant |
14740 | field for a variant part. */ | |
1b95cdb7 SM |
14741 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
14742 | offset_map_type; | |
9c6a1327 TT |
14743 | |
14744 | /* Compute the discriminant range for a given variant. OBSTACK is | |
14745 | where the results will be stored. VARIANT is the variant to | |
14746 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
14747 | or unsigned. */ | |
14748 | ||
14749 | static const gdb::array_view<discriminant_range> | |
14750 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
14751 | bool is_unsigned) | |
14752 | { | |
14753 | std::vector<discriminant_range> ranges; | |
14754 | ||
14755 | if (variant.default_branch) | |
14756 | return {}; | |
14757 | ||
14758 | if (variant.discr_list_data == nullptr) | |
14759 | { | |
14760 | discriminant_range r | |
14761 | = {variant.discriminant_value, variant.discriminant_value}; | |
14762 | ranges.push_back (r); | |
14763 | } | |
14764 | else | |
14765 | { | |
14766 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
14767 | variant.discr_list_data->size); | |
14768 | while (!data.empty ()) | |
14769 | { | |
14770 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
14771 | { | |
14772 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
14773 | break; | |
14774 | } | |
14775 | bool is_range = data[0] == DW_DSC_range; | |
14776 | data = data.slice (1); | |
14777 | ||
14778 | ULONGEST low, high; | |
14779 | unsigned int bytes_read; | |
14780 | ||
14781 | if (data.empty ()) | |
14782 | { | |
14783 | complaint (_("DW_AT_discr_list missing low value")); | |
14784 | break; | |
14785 | } | |
14786 | if (is_unsigned) | |
14787 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
14788 | else | |
14789 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
14790 | &bytes_read); | |
14791 | data = data.slice (bytes_read); | |
14792 | ||
14793 | if (is_range) | |
14794 | { | |
14795 | if (data.empty ()) | |
14796 | { | |
14797 | complaint (_("DW_AT_discr_list missing high value")); | |
14798 | break; | |
14799 | } | |
14800 | if (is_unsigned) | |
14801 | high = read_unsigned_leb128 (nullptr, data.data (), | |
14802 | &bytes_read); | |
14803 | else | |
14804 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
14805 | &bytes_read); | |
14806 | data = data.slice (bytes_read); | |
14807 | } | |
14808 | else | |
14809 | high = low; | |
14810 | ||
14811 | ranges.push_back ({ low, high }); | |
14812 | } | |
14813 | } | |
14814 | ||
14815 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
14816 | ranges.size ()); | |
14817 | std::copy (ranges.begin (), ranges.end (), result); | |
14818 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
14819 | } | |
14820 | ||
14821 | static const gdb::array_view<variant_part> create_variant_parts | |
14822 | (struct obstack *obstack, | |
14823 | const offset_map_type &offset_map, | |
14824 | struct field_info *fi, | |
14825 | const std::vector<variant_part_builder> &variant_parts); | |
14826 | ||
14827 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
14828 | the variant to fill in. OBSTACK is where any needed allocations | |
14829 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
14830 | fields for the type. FI describes the fields of the type we're | |
14831 | processing. FIELD is the variant field we're converting. */ | |
14832 | ||
14833 | static void | |
14834 | create_one_variant (variant &result, struct obstack *obstack, | |
14835 | const offset_map_type &offset_map, | |
14836 | struct field_info *fi, const variant_field &field) | |
14837 | { | |
14838 | result.discriminants = convert_variant_range (obstack, field, false); | |
14839 | result.first_field = field.first_field + fi->baseclasses.size (); | |
14840 | result.last_field = field.last_field + fi->baseclasses.size (); | |
14841 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
14842 | field.variant_parts); | |
14843 | } | |
14844 | ||
14845 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
14846 | is the variant part to fill in. OBSTACK is where any needed | |
14847 | allocations will be done. OFFSET_MAP holds the mapping from | |
14848 | section offsets to fields for the type. FI describes the fields of | |
14849 | the type we're processing. BUILDER is the variant part to be | |
14850 | converted. */ | |
14851 | ||
14852 | static void | |
14853 | create_one_variant_part (variant_part &result, | |
14854 | struct obstack *obstack, | |
14855 | const offset_map_type &offset_map, | |
14856 | struct field_info *fi, | |
14857 | const variant_part_builder &builder) | |
14858 | { | |
14859 | auto iter = offset_map.find (builder.discriminant_offset); | |
14860 | if (iter == offset_map.end ()) | |
14861 | { | |
14862 | result.discriminant_index = -1; | |
14863 | /* Doesn't matter. */ | |
14864 | result.is_unsigned = false; | |
14865 | } | |
14866 | else | |
14867 | { | |
14868 | result.discriminant_index = iter->second; | |
14869 | result.is_unsigned | |
b6cdac4b | 14870 | = TYPE_UNSIGNED (fi->fields[result.discriminant_index].field.type ()); |
9c6a1327 TT |
14871 | } |
14872 | ||
14873 | size_t n = builder.variants.size (); | |
14874 | variant *output = new (obstack) variant[n]; | |
14875 | for (size_t i = 0; i < n; ++i) | |
14876 | create_one_variant (output[i], obstack, offset_map, fi, | |
14877 | builder.variants[i]); | |
14878 | ||
14879 | result.variants = gdb::array_view<variant> (output, n); | |
14880 | } | |
14881 | ||
14882 | /* Create a vector of variant parts that can be attached to a type. | |
14883 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
14884 | holds the mapping from section offsets to fields for the type. FI | |
14885 | describes the fields of the type we're processing. VARIANT_PARTS | |
14886 | is the vector to convert. */ | |
14887 | ||
14888 | static const gdb::array_view<variant_part> | |
14889 | create_variant_parts (struct obstack *obstack, | |
14890 | const offset_map_type &offset_map, | |
14891 | struct field_info *fi, | |
14892 | const std::vector<variant_part_builder> &variant_parts) | |
14893 | { | |
14894 | if (variant_parts.empty ()) | |
14895 | return {}; | |
14896 | ||
14897 | size_t n = variant_parts.size (); | |
14898 | variant_part *result = new (obstack) variant_part[n]; | |
14899 | for (size_t i = 0; i < n; ++i) | |
14900 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
14901 | variant_parts[i]); | |
14902 | ||
14903 | return gdb::array_view<variant_part> (result, n); | |
14904 | } | |
14905 | ||
14906 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
14907 | done. */ | |
14908 | ||
14909 | static void | |
14910 | add_variant_property (struct field_info *fip, struct type *type, | |
14911 | struct dwarf2_cu *cu) | |
14912 | { | |
14913 | /* Map section offsets of fields to their field index. Note the | |
14914 | field index here does not take the number of baseclasses into | |
14915 | account. */ | |
14916 | offset_map_type offset_map; | |
14917 | for (int i = 0; i < fip->fields.size (); ++i) | |
14918 | offset_map[fip->fields[i].offset] = i; | |
14919 | ||
5e22e966 | 14920 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
14921 | gdb::array_view<variant_part> parts |
14922 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
14923 | fip->variant_parts); | |
14924 | ||
14925 | struct dynamic_prop prop; | |
14926 | prop.kind = PROP_VARIANT_PARTS; | |
14927 | prop.data.variant_parts | |
14928 | = ((gdb::array_view<variant_part> *) | |
14929 | obstack_copy (&objfile->objfile_obstack, &parts, sizeof (parts))); | |
14930 | ||
5c54719c | 14931 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
14932 | } |
14933 | ||
c906108c SS |
14934 | /* Create the vector of fields, and attach it to the type. */ |
14935 | ||
14936 | static void | |
fba45db2 | 14937 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14938 | struct dwarf2_cu *cu) |
c906108c | 14939 | { |
317f7127 | 14940 | int nfields = fip->nfields (); |
c906108c SS |
14941 | |
14942 | /* Record the field count, allocate space for the array of fields, | |
14943 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 14944 | type->set_num_fields (nfields); |
3cabb6b0 SM |
14945 | type->set_fields |
14946 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 14947 | |
b4ba55a1 | 14948 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14949 | { |
14950 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14951 | ||
14952 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14953 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14954 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14955 | ||
14956 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14957 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14958 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14959 | ||
774b6a14 TT |
14960 | TYPE_FIELD_IGNORE_BITS (type) = |
14961 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14962 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14963 | } |
14964 | ||
14965 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14966 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14967 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14968 | { |
be2daae6 | 14969 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14970 | unsigned char *pointer; |
c906108c SS |
14971 | |
14972 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 14973 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 14974 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
14975 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
14976 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
14977 | } |
14978 | ||
9c6a1327 TT |
14979 | if (!fip->variant_parts.empty ()) |
14980 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 14981 | |
be2daae6 TT |
14982 | /* Copy the saved-up fields into the field vector. */ |
14983 | for (int i = 0; i < nfields; ++i) | |
c906108c | 14984 | { |
be2daae6 TT |
14985 | struct nextfield &field |
14986 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
14987 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 14988 | |
ceacbf6e | 14989 | type->field (i) = field.field; |
be2daae6 | 14990 | switch (field.accessibility) |
c906108c | 14991 | { |
c5aa993b | 14992 | case DW_ACCESS_private: |
b4ba55a1 | 14993 | if (cu->language != language_ada) |
be2daae6 | 14994 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 14995 | break; |
c906108c | 14996 | |
c5aa993b | 14997 | case DW_ACCESS_protected: |
b4ba55a1 | 14998 | if (cu->language != language_ada) |
be2daae6 | 14999 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15000 | break; |
c906108c | 15001 | |
c5aa993b JM |
15002 | case DW_ACCESS_public: |
15003 | break; | |
c906108c | 15004 | |
c5aa993b JM |
15005 | default: |
15006 | /* Unknown accessibility. Complain and treat it as public. */ | |
15007 | { | |
b98664d3 | 15008 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15009 | field.accessibility); |
c5aa993b JM |
15010 | } |
15011 | break; | |
c906108c | 15012 | } |
be2daae6 | 15013 | if (i < fip->baseclasses.size ()) |
c906108c | 15014 | { |
be2daae6 | 15015 | switch (field.virtuality) |
c906108c | 15016 | { |
c5aa993b JM |
15017 | case DW_VIRTUALITY_virtual: |
15018 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15019 | if (cu->language == language_ada) |
a73c6dcd | 15020 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15021 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15022 | break; |
c906108c SS |
15023 | } |
15024 | } | |
c906108c SS |
15025 | } |
15026 | } | |
15027 | ||
7d27a96d TT |
15028 | /* Return true if this member function is a constructor, false |
15029 | otherwise. */ | |
15030 | ||
15031 | static int | |
15032 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15033 | { | |
15034 | const char *fieldname; | |
fe978cb0 | 15035 | const char *type_name; |
7d27a96d TT |
15036 | int len; |
15037 | ||
15038 | if (die->parent == NULL) | |
15039 | return 0; | |
15040 | ||
15041 | if (die->parent->tag != DW_TAG_structure_type | |
15042 | && die->parent->tag != DW_TAG_union_type | |
15043 | && die->parent->tag != DW_TAG_class_type) | |
15044 | return 0; | |
15045 | ||
15046 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15047 | type_name = dwarf2_name (die->parent, cu); |
15048 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15049 | return 0; |
15050 | ||
15051 | len = strlen (fieldname); | |
fe978cb0 PA |
15052 | return (strncmp (fieldname, type_name, len) == 0 |
15053 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15054 | } |
15055 | ||
e35000a7 TBA |
15056 | /* Check if the given VALUE is a recognized enum |
15057 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
15058 | Table 7.24. */ | |
15059 | ||
15060 | static bool | |
15061 | is_valid_DW_AT_defaulted (ULONGEST value) | |
15062 | { | |
15063 | switch (value) | |
15064 | { | |
15065 | case DW_DEFAULTED_no: | |
15066 | case DW_DEFAULTED_in_class: | |
15067 | case DW_DEFAULTED_out_of_class: | |
15068 | return true; | |
15069 | } | |
15070 | ||
3142e908 | 15071 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
15072 | return false; |
15073 | } | |
15074 | ||
c906108c SS |
15075 | /* Add a member function to the proper fieldlist. */ |
15076 | ||
15077 | static void | |
107d2387 | 15078 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15079 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15080 | { |
5e22e966 | 15081 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15082 | struct attribute *attr; |
c906108c | 15083 | int i; |
be2daae6 | 15084 | struct fnfieldlist *flp = nullptr; |
c906108c | 15085 | struct fn_field *fnp; |
15d034d0 | 15086 | const char *fieldname; |
f792889a | 15087 | struct type *this_type; |
60d5a603 | 15088 | enum dwarf_access_attribute accessibility; |
c906108c | 15089 | |
b4ba55a1 | 15090 | if (cu->language == language_ada) |
a73c6dcd | 15091 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15092 | |
2df3850c | 15093 | /* Get name of member function. */ |
39cbfefa DJ |
15094 | fieldname = dwarf2_name (die, cu); |
15095 | if (fieldname == NULL) | |
2df3850c | 15096 | return; |
c906108c | 15097 | |
c906108c | 15098 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15099 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15100 | { |
27bfe10e | 15101 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15102 | { |
15103 | flp = &fip->fnfieldlists[i]; | |
15104 | break; | |
15105 | } | |
c906108c SS |
15106 | } |
15107 | ||
be2daae6 TT |
15108 | /* Create a new fnfieldlist if necessary. */ |
15109 | if (flp == nullptr) | |
c906108c | 15110 | { |
be2daae6 TT |
15111 | fip->fnfieldlists.emplace_back (); |
15112 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15113 | flp->name = fieldname; |
be2daae6 | 15114 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15115 | } |
15116 | ||
be2daae6 TT |
15117 | /* Create a new member function field and add it to the vector of |
15118 | fnfieldlists. */ | |
15119 | flp->fnfields.emplace_back (); | |
15120 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15121 | |
15122 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15123 | if (cu->language == language_cplus) |
be2daae6 TT |
15124 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15125 | die, cu); | |
3da10d80 KS |
15126 | else |
15127 | { | |
1d06ead6 | 15128 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15129 | fnp->physname = physname ? physname : ""; |
15130 | } | |
15131 | ||
c906108c | 15132 | fnp->type = alloc_type (objfile); |
f792889a | 15133 | this_type = read_type_die (die, cu); |
78134374 | 15134 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15135 | { |
1f704f76 | 15136 | int nparams = this_type->num_fields (); |
c906108c | 15137 | |
f792889a | 15138 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15139 | of the method itself (TYPE_CODE_METHOD). */ |
15140 | smash_to_method_type (fnp->type, type, | |
f792889a | 15141 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15142 | this_type->fields (), |
1f704f76 | 15143 | this_type->num_fields (), |
f792889a | 15144 | TYPE_VARARGS (this_type)); |
c906108c SS |
15145 | |
15146 | /* Handle static member functions. | |
c5aa993b | 15147 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15148 | member functions. G++ helps GDB by marking the first |
15149 | parameter for non-static member functions (which is the this | |
15150 | pointer) as artificial. We obtain this information from | |
15151 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15152 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15153 | fnp->voffset = VOFFSET_STATIC; |
15154 | } | |
15155 | else | |
b98664d3 | 15156 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15157 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15158 | |
15159 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15160 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15161 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15162 | |
3e43a32a MS |
15163 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15164 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15165 | |
15166 | /* Get accessibility. */ | |
e142c38c | 15167 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15168 | if (attr != nullptr) |
aead7601 | 15169 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15170 | else |
15171 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15172 | switch (accessibility) | |
c906108c | 15173 | { |
60d5a603 JK |
15174 | case DW_ACCESS_private: |
15175 | fnp->is_private = 1; | |
15176 | break; | |
15177 | case DW_ACCESS_protected: | |
15178 | fnp->is_protected = 1; | |
15179 | break; | |
c906108c SS |
15180 | } |
15181 | ||
b02dede2 | 15182 | /* Check for artificial methods. */ |
e142c38c | 15183 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15184 | if (attr && DW_UNSND (attr) != 0) |
15185 | fnp->is_artificial = 1; | |
15186 | ||
e35000a7 TBA |
15187 | /* Check for defaulted methods. */ |
15188 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15189 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15190 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15191 | ||
15192 | /* Check for deleted methods. */ | |
15193 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15194 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15195 | fnp->is_deleted = 1; | |
15196 | ||
7d27a96d TT |
15197 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15198 | ||
0d564a31 | 15199 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15200 | function. For older versions of GCC, this is an offset in the |
15201 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15202 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15203 | to the object address. */ |
15204 | ||
e142c38c | 15205 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15206 | if (attr != nullptr) |
8e19ed76 | 15207 | { |
4fc6c0d5 | 15208 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15209 | { |
aec5aa8b TT |
15210 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15211 | { | |
15212 | /* Old-style GCC. */ | |
15213 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15214 | } | |
15215 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15216 | || (DW_BLOCK (attr)->size > 1 | |
15217 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15218 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15219 | { | |
aec5aa8b TT |
15220 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15221 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15222 | dwarf2_complex_location_expr_complaint (); | |
15223 | else | |
15224 | fnp->voffset /= cu->header.addr_size; | |
15225 | fnp->voffset += 2; | |
15226 | } | |
15227 | else | |
15228 | dwarf2_complex_location_expr_complaint (); | |
15229 | ||
15230 | if (!fnp->fcontext) | |
7e993ebf KS |
15231 | { |
15232 | /* If there is no `this' field and no DW_AT_containing_type, | |
15233 | we cannot actually find a base class context for the | |
15234 | vtable! */ | |
1f704f76 | 15235 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15236 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15237 | { | |
b98664d3 | 15238 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15239 | "function \"%s\" (offset %s)"), |
15240 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15241 | } |
15242 | else | |
15243 | { | |
15244 | fnp->fcontext | |
15245 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15246 | } | |
15247 | } | |
aec5aa8b | 15248 | } |
cd6c91b4 | 15249 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 15250 | { |
4d3c2250 | 15251 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15252 | } |
15253 | else | |
15254 | { | |
4d3c2250 KB |
15255 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15256 | fieldname); | |
8e19ed76 | 15257 | } |
0d564a31 | 15258 | } |
d48cc9dd DJ |
15259 | else |
15260 | { | |
15261 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15262 | if (attr && DW_UNSND (attr)) | |
15263 | { | |
15264 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15265 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15266 | "but the vtable offset is not specified"), |
9d8780f0 | 15267 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15268 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15269 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15270 | } | |
15271 | } | |
c906108c SS |
15272 | } |
15273 | ||
15274 | /* Create the vector of member function fields, and attach it to the type. */ | |
15275 | ||
15276 | static void | |
fba45db2 | 15277 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15278 | struct dwarf2_cu *cu) |
c906108c | 15279 | { |
b4ba55a1 | 15280 | if (cu->language == language_ada) |
a73c6dcd | 15281 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15282 | |
c906108c SS |
15283 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15284 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15285 | TYPE_ALLOC (type, |
15286 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15287 | |
be2daae6 | 15288 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15289 | { |
be2daae6 | 15290 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15291 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15292 | |
be2daae6 TT |
15293 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15294 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15295 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15296 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15297 | ||
15298 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15299 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15300 | } |
15301 | ||
be2daae6 | 15302 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15303 | } |
15304 | ||
1168df01 JB |
15305 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15306 | language, zero otherwise. */ | |
15307 | static int | |
15308 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15309 | { | |
15310 | static const char vptr[] = "_vptr"; | |
15311 | ||
9c37b5ae TT |
15312 | /* Look for the C++ form of the vtable. */ |
15313 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15314 | return 1; |
15315 | ||
15316 | return 0; | |
15317 | } | |
15318 | ||
c0dd20ea | 15319 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15320 | functions, with the ABI-specified layout. If TYPE describes |
15321 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15322 | |
15323 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15324 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15325 | |
0b92b5bb TT |
15326 | static void |
15327 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15328 | { |
09e2d7c7 | 15329 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15330 | |
15331 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15332 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15333 | return; |
c0dd20ea DJ |
15334 | |
15335 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15336 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15337 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15338 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15339 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15340 | return; | |
c0dd20ea DJ |
15341 | |
15342 | /* Find the type of the method. */ | |
0b92b5bb | 15343 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea | 15344 | if (pfn_type == NULL |
78134374 SM |
15345 | || pfn_type->code () != TYPE_CODE_PTR |
15346 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15347 | return; |
c0dd20ea DJ |
15348 | |
15349 | /* Look for the "this" argument. */ | |
15350 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15351 | if (pfn_type->num_fields () == 0 |
0b92b5bb | 15352 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
78134374 | 15353 | || TYPE_FIELD_TYPE (pfn_type, 0)->code () != TYPE_CODE_PTR) |
0b92b5bb | 15354 | return; |
c0dd20ea | 15355 | |
09e2d7c7 | 15356 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15357 | new_type = alloc_type (objfile); |
09e2d7c7 | 15358 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15359 | pfn_type->fields (), pfn_type->num_fields (), |
c0dd20ea | 15360 | TYPE_VARARGS (pfn_type)); |
0b92b5bb | 15361 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15362 | } |
1168df01 | 15363 | |
2b4424c3 TT |
15364 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15365 | appropriate error checking and issuing complaints if there is a | |
15366 | problem. */ | |
15367 | ||
15368 | static ULONGEST | |
15369 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15370 | { | |
15371 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15372 | ||
15373 | if (attr == nullptr) | |
15374 | return 0; | |
15375 | ||
cd6c91b4 | 15376 | if (!attr->form_is_constant ()) |
2b4424c3 | 15377 | { |
b98664d3 | 15378 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15379 | " - DIE at %s [in module %s]"), |
15380 | sect_offset_str (die->sect_off), | |
5e22e966 | 15381 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15382 | return 0; |
15383 | } | |
15384 | ||
15385 | ULONGEST align; | |
15386 | if (attr->form == DW_FORM_sdata) | |
15387 | { | |
15388 | LONGEST val = DW_SND (attr); | |
15389 | if (val < 0) | |
15390 | { | |
b98664d3 | 15391 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15392 | " - DIE at %s [in module %s]"), |
15393 | sect_offset_str (die->sect_off), | |
5e22e966 | 15394 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15395 | return 0; |
15396 | } | |
15397 | align = val; | |
15398 | } | |
15399 | else | |
15400 | align = DW_UNSND (attr); | |
15401 | ||
15402 | if (align == 0) | |
15403 | { | |
b98664d3 | 15404 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15405 | " - DIE at %s [in module %s]"), |
15406 | sect_offset_str (die->sect_off), | |
5e22e966 | 15407 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15408 | return 0; |
15409 | } | |
15410 | if ((align & (align - 1)) != 0) | |
15411 | { | |
b98664d3 | 15412 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15413 | " - DIE at %s [in module %s]"), |
15414 | sect_offset_str (die->sect_off), | |
5e22e966 | 15415 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15416 | return 0; |
15417 | } | |
15418 | ||
15419 | return align; | |
15420 | } | |
15421 | ||
15422 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15423 | the alignment for TYPE. */ | |
15424 | ||
15425 | static void | |
15426 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15427 | struct type *type) | |
15428 | { | |
15429 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15430 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15431 | " - DIE at %s [in module %s]"), |
15432 | sect_offset_str (die->sect_off), | |
5e22e966 | 15433 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15434 | } |
685b1105 | 15435 | |
e35000a7 TBA |
15436 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15437 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15438 | ||
15439 | static bool | |
15440 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15441 | { | |
15442 | switch (value) | |
15443 | { | |
15444 | case DW_CC_normal: | |
15445 | case DW_CC_pass_by_reference: | |
15446 | case DW_CC_pass_by_value: | |
15447 | return true; | |
15448 | ||
15449 | default: | |
15450 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15451 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15452 | return false; |
15453 | } | |
15454 | } | |
15455 | ||
d0922fcf TBA |
15456 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15457 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15458 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15459 | ||
15460 | static bool | |
15461 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15462 | { | |
15463 | switch (value) | |
15464 | { | |
15465 | case DW_CC_normal: | |
15466 | case DW_CC_program: | |
15467 | case DW_CC_nocall: | |
15468 | return true; | |
15469 | ||
15470 | case DW_CC_GNU_renesas_sh: | |
15471 | case DW_CC_GNU_borland_fastcall_i386: | |
15472 | case DW_CC_GDB_IBM_OpenCL: | |
15473 | return true; | |
15474 | ||
15475 | default: | |
15476 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15477 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15478 | return false; |
15479 | } | |
15480 | } | |
15481 | ||
c906108c | 15482 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15483 | (definition) to create a type for the structure or union. Fill in |
15484 | the type's name and general properties; the members will not be | |
83655187 DE |
15485 | processed until process_structure_scope. A symbol table entry for |
15486 | the type will also not be done until process_structure_scope (assuming | |
15487 | the type has a name). | |
c906108c | 15488 | |
c767944b DJ |
15489 | NOTE: we need to call these functions regardless of whether or not the |
15490 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15491 | structure or union. This gets the type entered into our set of |
83655187 | 15492 | user defined types. */ |
c906108c | 15493 | |
f792889a | 15494 | static struct type * |
134d01f1 | 15495 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15496 | { |
5e22e966 | 15497 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15498 | struct type *type; |
15499 | struct attribute *attr; | |
15d034d0 | 15500 | const char *name; |
c906108c | 15501 | |
348e048f DE |
15502 | /* If the definition of this type lives in .debug_types, read that type. |
15503 | Don't follow DW_AT_specification though, that will take us back up | |
15504 | the chain and we want to go down. */ | |
052c8bb8 | 15505 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15506 | if (attr != nullptr) |
348e048f | 15507 | { |
ac9ec31b | 15508 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15509 | |
ac9ec31b | 15510 | /* The type's CU may not be the same as CU. |
02142a6c | 15511 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15512 | return set_die_type (die, type, cu); |
15513 | } | |
15514 | ||
c0dd20ea | 15515 | type = alloc_type (objfile); |
c906108c | 15516 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15517 | |
39cbfefa DJ |
15518 | name = dwarf2_name (die, cu); |
15519 | if (name != NULL) | |
c906108c | 15520 | { |
987504bb | 15521 | if (cu->language == language_cplus |
c44af4eb TT |
15522 | || cu->language == language_d |
15523 | || cu->language == language_rust) | |
63d06c5c | 15524 | { |
15d034d0 | 15525 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15526 | |
15527 | /* dwarf2_full_name might have already finished building the DIE's | |
15528 | type. If so, there is no need to continue. */ | |
15529 | if (get_die_type (die, cu) != NULL) | |
15530 | return get_die_type (die, cu); | |
15531 | ||
d0e39ea2 | 15532 | type->set_name (full_name); |
63d06c5c DC |
15533 | } |
15534 | else | |
15535 | { | |
d8151005 DJ |
15536 | /* The name is already allocated along with this objfile, so |
15537 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 15538 | type->set_name (name); |
63d06c5c | 15539 | } |
c906108c SS |
15540 | } |
15541 | ||
15542 | if (die->tag == DW_TAG_structure_type) | |
15543 | { | |
67607e24 | 15544 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15545 | } |
15546 | else if (die->tag == DW_TAG_union_type) | |
15547 | { | |
67607e24 | 15548 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
15549 | } |
15550 | else | |
15551 | { | |
67607e24 | 15552 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15553 | } |
15554 | ||
0cc2414c TT |
15555 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15556 | TYPE_DECLARED_CLASS (type) = 1; | |
15557 | ||
e35000a7 TBA |
15558 | /* Store the calling convention in the type if it's available in |
15559 | the die. Otherwise the calling convention remains set to | |
15560 | the default value DW_CC_normal. */ | |
15561 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15562 | if (attr != nullptr | |
15563 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15564 | { | |
15565 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15566 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15567 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15568 | } | |
15569 | ||
e142c38c | 15570 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15571 | if (attr != nullptr) |
c906108c | 15572 | { |
cd6c91b4 | 15573 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15574 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15575 | else | |
15576 | { | |
f8e89861 | 15577 | struct dynamic_prop prop; |
293e7e51 | 15578 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 15579 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
155bfbd3 JB |
15580 | TYPE_LENGTH (type) = 0; |
15581 | } | |
c906108c SS |
15582 | } |
15583 | else | |
15584 | { | |
15585 | TYPE_LENGTH (type) = 0; | |
15586 | } | |
15587 | ||
2b4424c3 TT |
15588 | maybe_set_alignment (cu, die, type); |
15589 | ||
5230b05a | 15590 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15591 | { |
5230b05a WT |
15592 | /* ICC<14 does not output the required DW_AT_declaration on |
15593 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15594 | TYPE_STUB (type) = 1; |
685b1105 JK |
15595 | } |
15596 | else | |
15597 | TYPE_STUB_SUPPORTED (type) = 1; | |
15598 | ||
dc718098 | 15599 | if (die_is_declaration (die, cu)) |
876cecd0 | 15600 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15601 | else if (attr == NULL && die->child == NULL |
15602 | && producer_is_realview (cu->producer)) | |
15603 | /* RealView does not output the required DW_AT_declaration | |
15604 | on incomplete types. */ | |
15605 | TYPE_STUB (type) = 1; | |
dc718098 | 15606 | |
c906108c SS |
15607 | /* We need to add the type field to the die immediately so we don't |
15608 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15609 | type within the structure itself. */ |
1c379e20 | 15610 | set_die_type (die, type, cu); |
c906108c | 15611 | |
7e314c57 JK |
15612 | /* set_die_type should be already done. */ |
15613 | set_descriptive_type (type, die, cu); | |
15614 | ||
c767944b DJ |
15615 | return type; |
15616 | } | |
15617 | ||
9c6a1327 TT |
15618 | static void handle_struct_member_die |
15619 | (struct die_info *child_die, | |
15620 | struct type *type, | |
15621 | struct field_info *fi, | |
15622 | std::vector<struct symbol *> *template_args, | |
15623 | struct dwarf2_cu *cu); | |
15624 | ||
15625 | /* A helper for handle_struct_member_die that handles | |
15626 | DW_TAG_variant_part. */ | |
15627 | ||
15628 | static void | |
15629 | handle_variant_part (struct die_info *die, struct type *type, | |
15630 | struct field_info *fi, | |
15631 | std::vector<struct symbol *> *template_args, | |
15632 | struct dwarf2_cu *cu) | |
15633 | { | |
15634 | variant_part_builder *new_part; | |
15635 | if (fi->current_variant_part == nullptr) | |
15636 | { | |
15637 | fi->variant_parts.emplace_back (); | |
15638 | new_part = &fi->variant_parts.back (); | |
15639 | } | |
15640 | else if (!fi->current_variant_part->processing_variant) | |
15641 | { | |
15642 | complaint (_("nested DW_TAG_variant_part seen " | |
15643 | "- DIE at %s [in module %s]"), | |
15644 | sect_offset_str (die->sect_off), | |
5e22e966 | 15645 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15646 | return; |
15647 | } | |
15648 | else | |
15649 | { | |
15650 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
15651 | current.variant_parts.emplace_back (); | |
15652 | new_part = ¤t.variant_parts.back (); | |
15653 | } | |
15654 | ||
15655 | /* When we recurse, we want callees to add to this new variant | |
15656 | part. */ | |
15657 | scoped_restore save_current_variant_part | |
15658 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
15659 | ||
15660 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15661 | if (discr == NULL) | |
15662 | { | |
15663 | /* It's a univariant form, an extension we support. */ | |
15664 | } | |
15665 | else if (discr->form_is_ref ()) | |
15666 | { | |
15667 | struct dwarf2_cu *target_cu = cu; | |
15668 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15669 | ||
15670 | new_part->discriminant_offset = target_die->sect_off; | |
15671 | } | |
15672 | else | |
15673 | { | |
15674 | complaint (_("DW_AT_discr does not have DIE reference form" | |
15675 | " - DIE at %s [in module %s]"), | |
15676 | sect_offset_str (die->sect_off), | |
5e22e966 | 15677 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15678 | } |
15679 | ||
15680 | for (die_info *child_die = die->child; | |
15681 | child_die != NULL; | |
15682 | child_die = child_die->sibling) | |
15683 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
15684 | } | |
15685 | ||
15686 | /* A helper for handle_struct_member_die that handles | |
15687 | DW_TAG_variant. */ | |
15688 | ||
15689 | static void | |
15690 | handle_variant (struct die_info *die, struct type *type, | |
15691 | struct field_info *fi, | |
15692 | std::vector<struct symbol *> *template_args, | |
15693 | struct dwarf2_cu *cu) | |
15694 | { | |
15695 | if (fi->current_variant_part == nullptr) | |
15696 | { | |
15697 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
15698 | "- DIE at %s [in module %s]"), | |
15699 | sect_offset_str (die->sect_off), | |
5e22e966 | 15700 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15701 | return; |
15702 | } | |
15703 | if (fi->current_variant_part->processing_variant) | |
15704 | { | |
15705 | complaint (_("nested DW_TAG_variant seen " | |
15706 | "- DIE at %s [in module %s]"), | |
15707 | sect_offset_str (die->sect_off), | |
5e22e966 | 15708 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15709 | return; |
15710 | } | |
15711 | ||
15712 | scoped_restore save_processing_variant | |
15713 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
15714 | true); | |
15715 | ||
15716 | fi->current_variant_part->variants.emplace_back (); | |
15717 | variant_field &variant = fi->current_variant_part->variants.back (); | |
15718 | variant.first_field = fi->fields.size (); | |
15719 | ||
15720 | /* In a variant we want to get the discriminant and also add a | |
15721 | field for our sole member child. */ | |
15722 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
15723 | if (discr == nullptr) | |
15724 | { | |
15725 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
15726 | if (discr == nullptr || DW_BLOCK (discr)->size == 0) | |
15727 | variant.default_branch = true; | |
15728 | else | |
15729 | variant.discr_list_data = DW_BLOCK (discr); | |
15730 | } | |
15731 | else | |
15732 | variant.discriminant_value = DW_UNSND (discr); | |
15733 | ||
15734 | for (die_info *variant_child = die->child; | |
15735 | variant_child != NULL; | |
15736 | variant_child = variant_child->sibling) | |
15737 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
15738 | ||
15739 | variant.last_field = fi->fields.size (); | |
15740 | } | |
15741 | ||
2ddeaf8a TT |
15742 | /* A helper for process_structure_scope that handles a single member |
15743 | DIE. */ | |
15744 | ||
15745 | static void | |
15746 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15747 | struct field_info *fi, | |
15748 | std::vector<struct symbol *> *template_args, | |
15749 | struct dwarf2_cu *cu) | |
15750 | { | |
15751 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 15752 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
15753 | { |
15754 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15755 | should be a DW_TAG_member that is a declaration, but | |
15756 | all versions of G++ as of this writing (so through at | |
15757 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15758 | tags for them instead. */ | |
15759 | dwarf2_add_field (fi, child_die, cu); | |
15760 | } | |
15761 | else if (child_die->tag == DW_TAG_subprogram) | |
15762 | { | |
15763 | /* Rust doesn't have member functions in the C++ sense. | |
15764 | However, it does emit ordinary functions as children | |
15765 | of a struct DIE. */ | |
15766 | if (cu->language == language_rust) | |
15767 | read_func_scope (child_die, cu); | |
15768 | else | |
15769 | { | |
15770 | /* C++ member function. */ | |
15771 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15772 | } | |
15773 | } | |
15774 | else if (child_die->tag == DW_TAG_inheritance) | |
15775 | { | |
15776 | /* C++ base class field. */ | |
15777 | dwarf2_add_field (fi, child_die, cu); | |
15778 | } | |
15779 | else if (type_can_define_types (child_die)) | |
15780 | dwarf2_add_type_defn (fi, child_die, cu); | |
15781 | else if (child_die->tag == DW_TAG_template_type_param | |
15782 | || child_die->tag == DW_TAG_template_value_param) | |
15783 | { | |
15784 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15785 | ||
15786 | if (arg != NULL) | |
15787 | template_args->push_back (arg); | |
15788 | } | |
9c6a1327 TT |
15789 | else if (child_die->tag == DW_TAG_variant_part) |
15790 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 15791 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 15792 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
15793 | } |
15794 | ||
c767944b DJ |
15795 | /* Finish creating a structure or union type, including filling in |
15796 | its members and creating a symbol for it. */ | |
15797 | ||
15798 | static void | |
15799 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15800 | { | |
5e22e966 | 15801 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 15802 | struct die_info *child_die; |
c767944b DJ |
15803 | struct type *type; |
15804 | ||
15805 | type = get_die_type (die, cu); | |
15806 | if (type == NULL) | |
15807 | type = read_structure_type (die, cu); | |
15808 | ||
3e1d3d8c | 15809 | bool has_template_parameters = false; |
e142c38c | 15810 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15811 | { |
15812 | struct field_info fi; | |
2f4732b0 | 15813 | std::vector<struct symbol *> template_args; |
c906108c | 15814 | |
639d11d3 | 15815 | child_die = die->child; |
c906108c SS |
15816 | |
15817 | while (child_die && child_die->tag) | |
15818 | { | |
2ddeaf8a | 15819 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 15820 | child_die = child_die->sibling; |
c906108c SS |
15821 | } |
15822 | ||
34eaf542 | 15823 | /* Attach template arguments to type. */ |
2f4732b0 | 15824 | if (!template_args.empty ()) |
34eaf542 | 15825 | { |
3e1d3d8c | 15826 | has_template_parameters = true; |
34eaf542 | 15827 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15828 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15829 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15830 | = XOBNEWVEC (&objfile->objfile_obstack, |
15831 | struct symbol *, | |
15832 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15833 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15834 | template_args.data (), |
34eaf542 TT |
15835 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15836 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15837 | } |
15838 | ||
c906108c | 15839 | /* Attach fields and member functions to the type. */ |
317f7127 | 15840 | if (fi.nfields () > 0) |
e7c27a73 | 15841 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15842 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15843 | { |
e7c27a73 | 15844 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15845 | |
c5aa993b | 15846 | /* Get the type which refers to the base class (possibly this |
c906108c | 15847 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15848 | class from the DW_AT_containing_type attribute. This use of |
15849 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15850 | |
e142c38c | 15851 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15852 | { |
e7c27a73 | 15853 | struct type *t = die_containing_type (die, cu); |
c906108c | 15854 | |
ae6ae975 | 15855 | set_type_vptr_basetype (type, t); |
c906108c SS |
15856 | if (type == t) |
15857 | { | |
c906108c SS |
15858 | int i; |
15859 | ||
15860 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 15861 | for (i = t->num_fields () - 1; |
c906108c SS |
15862 | i >= TYPE_N_BASECLASSES (t); |
15863 | --i) | |
15864 | { | |
0d5cff50 | 15865 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15866 | |
1168df01 | 15867 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15868 | { |
ae6ae975 | 15869 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15870 | break; |
15871 | } | |
15872 | } | |
15873 | ||
15874 | /* Complain if virtual function table field not found. */ | |
15875 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15876 | complaint (_("virtual function table pointer " |
3e43a32a | 15877 | "not found when defining class '%s'"), |
7d93a1e0 | 15878 | type->name () ? type->name () : ""); |
c906108c SS |
15879 | } |
15880 | else | |
15881 | { | |
ae6ae975 | 15882 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15883 | } |
15884 | } | |
f6235d4c | 15885 | else if (cu->producer |
61012eef | 15886 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15887 | { |
15888 | /* The IBM XLC compiler does not provide direct indication | |
15889 | of the containing type, but the vtable pointer is | |
15890 | always named __vfp. */ | |
15891 | ||
15892 | int i; | |
15893 | ||
1f704f76 | 15894 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
15895 | i >= TYPE_N_BASECLASSES (type); |
15896 | --i) | |
15897 | { | |
15898 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15899 | { | |
ae6ae975 DE |
15900 | set_type_vptr_fieldno (type, i); |
15901 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15902 | break; |
15903 | } | |
15904 | } | |
15905 | } | |
c906108c | 15906 | } |
98751a41 JK |
15907 | |
15908 | /* Copy fi.typedef_field_list linked list elements content into the | |
15909 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15910 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15911 | { |
be2daae6 | 15912 | int count = fi.typedef_field_list.size (); |
98751a41 | 15913 | |
a0d7a4ff | 15914 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15915 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15916 | = ((struct decl_field *) |
be2daae6 TT |
15917 | TYPE_ALLOC (type, |
15918 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15919 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15920 | |
be2daae6 TT |
15921 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15922 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15923 | } |
c767944b | 15924 | |
883fd55a KS |
15925 | /* Copy fi.nested_types_list linked list elements content into the |
15926 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15927 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15928 | { |
be2daae6 | 15929 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15930 | |
15931 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15932 | TYPE_NESTED_TYPES_ARRAY (type) | |
15933 | = ((struct decl_field *) | |
be2daae6 TT |
15934 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15935 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15936 | |
be2daae6 TT |
15937 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15938 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15939 | } |
c906108c | 15940 | } |
63d06c5c | 15941 | |
bb5ed363 | 15942 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15943 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15944 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15945 | |
90aeadfc DC |
15946 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15947 | snapshots) has been known to create a die giving a declaration | |
15948 | for a class that has, as a child, a die giving a definition for a | |
15949 | nested class. So we have to process our children even if the | |
15950 | current die is a declaration. Normally, of course, a declaration | |
15951 | won't have any children at all. */ | |
134d01f1 | 15952 | |
ca040673 DE |
15953 | child_die = die->child; |
15954 | ||
90aeadfc DC |
15955 | while (child_die != NULL && child_die->tag) |
15956 | { | |
15957 | if (child_die->tag == DW_TAG_member | |
15958 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15959 | || child_die->tag == DW_TAG_inheritance |
15960 | || child_die->tag == DW_TAG_template_value_param | |
15961 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15962 | { |
90aeadfc | 15963 | /* Do nothing. */ |
134d01f1 | 15964 | } |
90aeadfc DC |
15965 | else |
15966 | process_die (child_die, cu); | |
134d01f1 | 15967 | |
436c571c | 15968 | child_die = child_die->sibling; |
134d01f1 DJ |
15969 | } |
15970 | ||
fa4028e9 JB |
15971 | /* Do not consider external references. According to the DWARF standard, |
15972 | these DIEs are identified by the fact that they have no byte_size | |
15973 | attribute, and a declaration attribute. */ | |
15974 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
15975 | || !die_is_declaration (die, cu) |
15976 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
15977 | { |
15978 | struct symbol *sym = new_symbol (die, type, cu); | |
15979 | ||
15980 | if (has_template_parameters) | |
15981 | { | |
a776957c TT |
15982 | struct symtab *symtab; |
15983 | if (sym != nullptr) | |
15984 | symtab = symbol_symtab (sym); | |
15985 | else if (cu->line_header != nullptr) | |
15986 | { | |
15987 | /* Any related symtab will do. */ | |
15988 | symtab | |
7ba99d21 | 15989 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
15990 | } |
15991 | else | |
15992 | { | |
15993 | symtab = nullptr; | |
15994 | complaint (_("could not find suitable " | |
15995 | "symtab for template parameter" | |
15996 | " - DIE at %s [in module %s]"), | |
15997 | sect_offset_str (die->sect_off), | |
15998 | objfile_name (objfile)); | |
15999 | } | |
16000 | ||
16001 | if (symtab != nullptr) | |
16002 | { | |
16003 | /* Make sure that the symtab is set on the new symbols. | |
16004 | Even though they don't appear in this symtab directly, | |
16005 | other parts of gdb assume that symbols do, and this is | |
16006 | reasonably true. */ | |
16007 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16008 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16009 | } | |
3e1d3d8c TT |
16010 | } |
16011 | } | |
134d01f1 DJ |
16012 | } |
16013 | ||
ed6acedd TT |
16014 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16015 | type, update TYPE using some information only available in DIE's | |
16016 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16017 | |
16018 | static void | |
16019 | update_enumeration_type_from_children (struct die_info *die, | |
16020 | struct type *type, | |
16021 | struct dwarf2_cu *cu) | |
16022 | { | |
60f7655a | 16023 | struct die_info *child_die; |
55426c9d JB |
16024 | int unsigned_enum = 1; |
16025 | int flag_enum = 1; | |
55426c9d | 16026 | |
8268c778 | 16027 | auto_obstack obstack; |
ed6acedd | 16028 | std::vector<struct field> fields; |
55426c9d | 16029 | |
60f7655a DE |
16030 | for (child_die = die->child; |
16031 | child_die != NULL && child_die->tag; | |
436c571c | 16032 | child_die = child_die->sibling) |
55426c9d JB |
16033 | { |
16034 | struct attribute *attr; | |
16035 | LONGEST value; | |
16036 | const gdb_byte *bytes; | |
16037 | struct dwarf2_locexpr_baton *baton; | |
16038 | const char *name; | |
60f7655a | 16039 | |
55426c9d JB |
16040 | if (child_die->tag != DW_TAG_enumerator) |
16041 | continue; | |
16042 | ||
16043 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16044 | if (attr == NULL) | |
16045 | continue; | |
16046 | ||
16047 | name = dwarf2_name (child_die, cu); | |
16048 | if (name == NULL) | |
16049 | name = "<anonymous enumerator>"; | |
16050 | ||
16051 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16052 | &value, &bytes, &baton); | |
16053 | if (value < 0) | |
16054 | { | |
16055 | unsigned_enum = 0; | |
16056 | flag_enum = 0; | |
16057 | } | |
55426c9d | 16058 | else |
edd45eb0 SM |
16059 | { |
16060 | if (count_one_bits_ll (value) >= 2) | |
16061 | flag_enum = 0; | |
edd45eb0 | 16062 | } |
55426c9d | 16063 | |
ed6acedd TT |
16064 | fields.emplace_back (); |
16065 | struct field &field = fields.back (); | |
16066 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16067 | SET_FIELD_ENUMVAL (field, value); | |
16068 | } | |
16069 | ||
16070 | if (!fields.empty ()) | |
16071 | { | |
5e33d5f4 | 16072 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16073 | type->set_fields |
16074 | ((struct field *) | |
16075 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16076 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16077 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16078 | } |
16079 | ||
16080 | if (unsigned_enum) | |
16081 | TYPE_UNSIGNED (type) = 1; | |
16082 | if (flag_enum) | |
16083 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16084 | } |
16085 | ||
134d01f1 DJ |
16086 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16087 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16088 | |
f792889a | 16089 | static struct type * |
134d01f1 | 16090 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16091 | { |
5e22e966 | 16092 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16093 | struct type *type; |
c906108c | 16094 | struct attribute *attr; |
0114d602 | 16095 | const char *name; |
134d01f1 | 16096 | |
348e048f DE |
16097 | /* If the definition of this type lives in .debug_types, read that type. |
16098 | Don't follow DW_AT_specification though, that will take us back up | |
16099 | the chain and we want to go down. */ | |
052c8bb8 | 16100 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16101 | if (attr != nullptr) |
348e048f | 16102 | { |
ac9ec31b | 16103 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16104 | |
ac9ec31b | 16105 | /* The type's CU may not be the same as CU. |
02142a6c | 16106 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16107 | return set_die_type (die, type, cu); |
16108 | } | |
16109 | ||
c906108c SS |
16110 | type = alloc_type (objfile); |
16111 | ||
67607e24 | 16112 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16113 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16114 | if (name != NULL) |
d0e39ea2 | 16115 | type->set_name (name); |
c906108c | 16116 | |
0626fc76 TT |
16117 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16118 | if (attr != NULL) | |
16119 | { | |
16120 | struct type *underlying_type = die_type (die, cu); | |
16121 | ||
16122 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16123 | } | |
16124 | ||
e142c38c | 16125 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16126 | if (attr != nullptr) |
c906108c SS |
16127 | { |
16128 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16129 | } | |
16130 | else | |
16131 | { | |
16132 | TYPE_LENGTH (type) = 0; | |
16133 | } | |
16134 | ||
2b4424c3 TT |
16135 | maybe_set_alignment (cu, die, type); |
16136 | ||
137033e9 JB |
16137 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16138 | declared as private in the package spec, and then defined only | |
16139 | inside the package body. Such types are known as Taft Amendment | |
16140 | Types. When another package uses such a type, an incomplete DIE | |
16141 | may be generated by the compiler. */ | |
02eb380e | 16142 | if (die_is_declaration (die, cu)) |
876cecd0 | 16143 | TYPE_STUB (type) = 1; |
02eb380e | 16144 | |
0626fc76 TT |
16145 | /* If this type has an underlying type that is not a stub, then we |
16146 | may use its attributes. We always use the "unsigned" attribute | |
16147 | in this situation, because ordinarily we guess whether the type | |
16148 | is unsigned -- but the guess can be wrong and the underlying type | |
16149 | can tell us the reality. However, we defer to a local size | |
16150 | attribute if one exists, because this lets the compiler override | |
16151 | the underlying type if needed. */ | |
16152 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16153 | { | |
9e7c9a03 HD |
16154 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16155 | underlying_type = check_typedef (underlying_type); | |
16156 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (underlying_type); | |
0626fc76 | 16157 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16158 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
2b4424c3 | 16159 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16160 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16161 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16162 | } |
16163 | ||
3d567982 TT |
16164 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16165 | ||
ed6acedd TT |
16166 | set_die_type (die, type, cu); |
16167 | ||
16168 | /* Finish the creation of this type by using the enum's children. | |
16169 | Note that, as usual, this must come after set_die_type to avoid | |
16170 | infinite recursion when trying to compute the names of the | |
16171 | enumerators. */ | |
16172 | update_enumeration_type_from_children (die, type, cu); | |
16173 | ||
16174 | return type; | |
134d01f1 DJ |
16175 | } |
16176 | ||
16177 | /* Given a pointer to a die which begins an enumeration, process all | |
16178 | the dies that define the members of the enumeration, and create the | |
16179 | symbol for the enumeration type. | |
16180 | ||
16181 | NOTE: We reverse the order of the element list. */ | |
16182 | ||
16183 | static void | |
16184 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16185 | { | |
f792889a | 16186 | struct type *this_type; |
134d01f1 | 16187 | |
f792889a DJ |
16188 | this_type = get_die_type (die, cu); |
16189 | if (this_type == NULL) | |
16190 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16191 | |
639d11d3 | 16192 | if (die->child != NULL) |
c906108c | 16193 | { |
9dc481d3 | 16194 | struct die_info *child_die; |
15d034d0 | 16195 | const char *name; |
9dc481d3 | 16196 | |
639d11d3 | 16197 | child_die = die->child; |
c906108c SS |
16198 | while (child_die && child_die->tag) |
16199 | { | |
16200 | if (child_die->tag != DW_TAG_enumerator) | |
16201 | { | |
e7c27a73 | 16202 | process_die (child_die, cu); |
c906108c SS |
16203 | } |
16204 | else | |
16205 | { | |
39cbfefa DJ |
16206 | name = dwarf2_name (child_die, cu); |
16207 | if (name) | |
ed6acedd | 16208 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16209 | } |
16210 | ||
436c571c | 16211 | child_die = child_die->sibling; |
c906108c | 16212 | } |
c906108c | 16213 | } |
134d01f1 | 16214 | |
6c83ed52 TT |
16215 | /* If we are reading an enum from a .debug_types unit, and the enum |
16216 | is a declaration, and the enum is not the signatured type in the | |
16217 | unit, then we do not want to add a symbol for it. Adding a | |
16218 | symbol would in some cases obscure the true definition of the | |
16219 | enum, giving users an incomplete type when the definition is | |
16220 | actually available. Note that we do not want to do this for all | |
16221 | enums which are just declarations, because C++0x allows forward | |
16222 | enum declarations. */ | |
3019eac3 | 16223 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16224 | && die_is_declaration (die, cu)) |
16225 | { | |
52dc124a | 16226 | struct signatured_type *sig_type; |
6c83ed52 | 16227 | |
c0f78cd4 | 16228 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16229 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16230 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16231 | return; |
16232 | } | |
16233 | ||
f792889a | 16234 | new_symbol (die, this_type, cu); |
c906108c SS |
16235 | } |
16236 | ||
16237 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16238 | the DIE's type field. For now, this only handles one dimensional | |
16239 | arrays. */ | |
16240 | ||
f792889a | 16241 | static struct type * |
e7c27a73 | 16242 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16243 | { |
5e22e966 | 16244 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16245 | struct die_info *child_die; |
7e314c57 | 16246 | struct type *type; |
c906108c | 16247 | struct type *element_type, *range_type, *index_type; |
c906108c | 16248 | struct attribute *attr; |
15d034d0 | 16249 | const char *name; |
a405673c | 16250 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16251 | unsigned int bit_stride = 0; |
c906108c | 16252 | |
e7c27a73 | 16253 | element_type = die_type (die, cu); |
c906108c | 16254 | |
7e314c57 JK |
16255 | /* The die_type call above may have already set the type for this DIE. */ |
16256 | type = get_die_type (die, cu); | |
16257 | if (type) | |
16258 | return type; | |
16259 | ||
dc53a7ad JB |
16260 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16261 | if (attr != NULL) | |
a405673c JB |
16262 | { |
16263 | int stride_ok; | |
293e7e51 | 16264 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
16265 | |
16266 | byte_stride_prop | |
16267 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16268 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16269 | prop_type); | |
a405673c JB |
16270 | if (!stride_ok) |
16271 | { | |
b98664d3 | 16272 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16273 | " - DIE at %s [in module %s]"), |
16274 | sect_offset_str (die->sect_off), | |
5e22e966 | 16275 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
16276 | /* Ignore this attribute. We will likely not be able to print |
16277 | arrays of this type correctly, but there is little we can do | |
16278 | to help if we cannot read the attribute's value. */ | |
16279 | byte_stride_prop = NULL; | |
16280 | } | |
16281 | } | |
dc53a7ad JB |
16282 | |
16283 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16284 | if (attr != NULL) | |
16285 | bit_stride = DW_UNSND (attr); | |
16286 | ||
c906108c SS |
16287 | /* Irix 6.2 native cc creates array types without children for |
16288 | arrays with unspecified length. */ | |
639d11d3 | 16289 | if (die->child == NULL) |
c906108c | 16290 | { |
46bf5051 | 16291 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16292 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16293 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16294 | byte_stride_prop, bit_stride); |
f792889a | 16295 | return set_die_type (die, type, cu); |
c906108c SS |
16296 | } |
16297 | ||
791afaa2 | 16298 | std::vector<struct type *> range_types; |
639d11d3 | 16299 | child_die = die->child; |
c906108c SS |
16300 | while (child_die && child_die->tag) |
16301 | { | |
16302 | if (child_die->tag == DW_TAG_subrange_type) | |
16303 | { | |
f792889a | 16304 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16305 | |
f792889a | 16306 | if (child_type != NULL) |
a02abb62 | 16307 | { |
0963b4bd MS |
16308 | /* The range type was succesfully read. Save it for the |
16309 | array type creation. */ | |
791afaa2 | 16310 | range_types.push_back (child_type); |
a02abb62 | 16311 | } |
c906108c | 16312 | } |
436c571c | 16313 | child_die = child_die->sibling; |
c906108c SS |
16314 | } |
16315 | ||
16316 | /* Dwarf2 dimensions are output from left to right, create the | |
16317 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16318 | |
c906108c | 16319 | type = element_type; |
7ca2d3a3 DL |
16320 | |
16321 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16322 | { | |
16323 | int i = 0; | |
9a619af0 | 16324 | |
791afaa2 | 16325 | while (i < range_types.size ()) |
dc53a7ad | 16326 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16327 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16328 | } |
16329 | else | |
16330 | { | |
791afaa2 | 16331 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16332 | while (ndim-- > 0) |
dc53a7ad | 16333 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16334 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16335 | } |
c906108c | 16336 | |
f5f8a009 EZ |
16337 | /* Understand Dwarf2 support for vector types (like they occur on |
16338 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16339 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16340 | custom vendor extension. The main difference between a regular | |
16341 | array and the vector variant is that vectors are passed by value | |
16342 | to functions. */ | |
e142c38c | 16343 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16344 | if (attr != nullptr) |
ea37ba09 | 16345 | make_vector_type (type); |
f5f8a009 | 16346 | |
dbc98a8b KW |
16347 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16348 | implementation may choose to implement triple vectors using this | |
16349 | attribute. */ | |
16350 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16351 | if (attr != nullptr) |
dbc98a8b KW |
16352 | { |
16353 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16354 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16355 | else | |
b98664d3 | 16356 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16357 | "than the total size of elements")); |
dbc98a8b KW |
16358 | } |
16359 | ||
39cbfefa DJ |
16360 | name = dwarf2_name (die, cu); |
16361 | if (name) | |
d0e39ea2 | 16362 | type->set_name (name); |
6e70227d | 16363 | |
2b4424c3 TT |
16364 | maybe_set_alignment (cu, die, type); |
16365 | ||
0963b4bd | 16366 | /* Install the type in the die. */ |
7e314c57 JK |
16367 | set_die_type (die, type, cu); |
16368 | ||
16369 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16370 | set_descriptive_type (type, die, cu); |
16371 | ||
7e314c57 | 16372 | return type; |
c906108c SS |
16373 | } |
16374 | ||
7ca2d3a3 | 16375 | static enum dwarf_array_dim_ordering |
6e70227d | 16376 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16377 | { |
16378 | struct attribute *attr; | |
16379 | ||
16380 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16381 | ||
435d3d88 | 16382 | if (attr != nullptr) |
aead7601 | 16383 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16384 | |
0963b4bd MS |
16385 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16386 | opposite order to the dwarf2 specification, but data is still | |
16387 | laid out as per normal fortran. | |
7ca2d3a3 | 16388 | |
0963b4bd MS |
16389 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16390 | version checking. */ | |
7ca2d3a3 | 16391 | |
905e0470 PM |
16392 | if (cu->language == language_fortran |
16393 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16394 | { |
16395 | return DW_ORD_row_major; | |
16396 | } | |
16397 | ||
6e70227d | 16398 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16399 | { |
16400 | case array_column_major: | |
16401 | return DW_ORD_col_major; | |
16402 | case array_row_major: | |
16403 | default: | |
16404 | return DW_ORD_row_major; | |
16405 | }; | |
16406 | } | |
16407 | ||
72019c9c | 16408 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16409 | the DIE's type field. */ |
72019c9c | 16410 | |
f792889a | 16411 | static struct type * |
72019c9c GM |
16412 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16413 | { | |
7e314c57 JK |
16414 | struct type *domain_type, *set_type; |
16415 | struct attribute *attr; | |
f792889a | 16416 | |
7e314c57 JK |
16417 | domain_type = die_type (die, cu); |
16418 | ||
16419 | /* The die_type call above may have already set the type for this DIE. */ | |
16420 | set_type = get_die_type (die, cu); | |
16421 | if (set_type) | |
16422 | return set_type; | |
16423 | ||
16424 | set_type = create_set_type (NULL, domain_type); | |
16425 | ||
16426 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16427 | if (attr != nullptr) |
d09039dd | 16428 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16429 | |
2b4424c3 TT |
16430 | maybe_set_alignment (cu, die, set_type); |
16431 | ||
f792889a | 16432 | return set_die_type (die, set_type, cu); |
72019c9c | 16433 | } |
7ca2d3a3 | 16434 | |
0971de02 TT |
16435 | /* A helper for read_common_block that creates a locexpr baton. |
16436 | SYM is the symbol which we are marking as computed. | |
16437 | COMMON_DIE is the DIE for the common block. | |
16438 | COMMON_LOC is the location expression attribute for the common | |
16439 | block itself. | |
16440 | MEMBER_LOC is the location expression attribute for the particular | |
16441 | member of the common block that we are processing. | |
16442 | CU is the CU from which the above come. */ | |
16443 | ||
16444 | static void | |
16445 | mark_common_block_symbol_computed (struct symbol *sym, | |
16446 | struct die_info *common_die, | |
16447 | struct attribute *common_loc, | |
16448 | struct attribute *member_loc, | |
16449 | struct dwarf2_cu *cu) | |
16450 | { | |
5e22e966 | 16451 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 16452 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
16453 | struct dwarf2_locexpr_baton *baton; |
16454 | gdb_byte *ptr; | |
16455 | unsigned int cu_off; | |
08feed99 | 16456 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
16457 | LONGEST offset = 0; |
16458 | ||
16459 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16460 | gdb_assert (common_loc->form_is_block ()); |
16461 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16462 | || member_loc->form_is_constant ()); |
0971de02 | 16463 | |
8d749320 | 16464 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 16465 | baton->per_objfile = per_objfile; |
0971de02 TT |
16466 | baton->per_cu = cu->per_cu; |
16467 | gdb_assert (baton->per_cu); | |
16468 | ||
16469 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16470 | ||
cd6c91b4 | 16471 | if (member_loc->form_is_constant ()) |
0971de02 | 16472 | { |
0826b30a | 16473 | offset = member_loc->constant_value (0); |
0971de02 TT |
16474 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
16475 | } | |
16476 | else | |
16477 | baton->size += DW_BLOCK (member_loc)->size; | |
16478 | ||
224c3ddb | 16479 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16480 | baton->data = ptr; |
16481 | ||
16482 | *ptr++ = DW_OP_call4; | |
9c541725 | 16483 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16484 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16485 | ptr += 4; | |
16486 | ||
cd6c91b4 | 16487 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16488 | { |
16489 | *ptr++ = DW_OP_addr; | |
16490 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16491 | ptr += cu->header.addr_size; | |
16492 | } | |
16493 | else | |
16494 | { | |
16495 | /* We have to copy the data here, because DW_OP_call4 will only | |
16496 | use a DW_AT_location attribute. */ | |
16497 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16498 | ptr += DW_BLOCK (member_loc)->size; | |
16499 | } | |
16500 | ||
16501 | *ptr++ = DW_OP_plus; | |
16502 | gdb_assert (ptr - baton->data == baton->size); | |
16503 | ||
0971de02 | 16504 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16505 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16506 | } |
16507 | ||
4357ac6c TT |
16508 | /* Create appropriate locally-scoped variables for all the |
16509 | DW_TAG_common_block entries. Also create a struct common_block | |
16510 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16511 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16512 | variable names. */ |
c906108c SS |
16513 | |
16514 | static void | |
e7c27a73 | 16515 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16516 | { |
0971de02 TT |
16517 | struct attribute *attr; |
16518 | ||
16519 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 16520 | if (attr != nullptr) |
0971de02 TT |
16521 | { |
16522 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 16523 | if (attr->form_is_block ()) |
0971de02 TT |
16524 | { |
16525 | /* Ok. */ | |
16526 | } | |
cd6c91b4 | 16527 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
16528 | { |
16529 | dwarf2_complex_location_expr_complaint (); | |
16530 | attr = NULL; | |
16531 | } | |
16532 | else | |
16533 | { | |
16534 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16535 | "common block member"); | |
16536 | attr = NULL; | |
16537 | } | |
16538 | } | |
16539 | ||
639d11d3 | 16540 | if (die->child != NULL) |
c906108c | 16541 | { |
5e22e966 | 16542 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
16543 | struct die_info *child_die; |
16544 | size_t n_entries = 0, size; | |
16545 | struct common_block *common_block; | |
16546 | struct symbol *sym; | |
74ac6d43 | 16547 | |
4357ac6c TT |
16548 | for (child_die = die->child; |
16549 | child_die && child_die->tag; | |
436c571c | 16550 | child_die = child_die->sibling) |
4357ac6c TT |
16551 | ++n_entries; |
16552 | ||
16553 | size = (sizeof (struct common_block) | |
16554 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16555 | common_block |
16556 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16557 | size); | |
4357ac6c TT |
16558 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16559 | common_block->n_entries = 0; | |
16560 | ||
16561 | for (child_die = die->child; | |
16562 | child_die && child_die->tag; | |
436c571c | 16563 | child_die = child_die->sibling) |
4357ac6c TT |
16564 | { |
16565 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16566 | symbol scope. */ | |
e7c27a73 | 16567 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16568 | if (sym != NULL) |
16569 | { | |
16570 | struct attribute *member_loc; | |
16571 | ||
16572 | common_block->contents[common_block->n_entries++] = sym; | |
16573 | ||
16574 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16575 | cu); | |
16576 | if (member_loc) | |
16577 | { | |
16578 | /* GDB has handled this for a long time, but it is | |
16579 | not specified by DWARF. It seems to have been | |
16580 | emitted by gfortran at least as recently as: | |
16581 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16582 | complaint (_("Variable in common block has " |
0971de02 | 16583 | "DW_AT_data_member_location " |
9d8780f0 SM |
16584 | "- DIE at %s [in module %s]"), |
16585 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16586 | objfile_name (objfile)); |
0971de02 | 16587 | |
cd6c91b4 | 16588 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16589 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16590 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16591 | || member_loc->form_is_block ()) |
0971de02 | 16592 | { |
435d3d88 | 16593 | if (attr != nullptr) |
0971de02 TT |
16594 | mark_common_block_symbol_computed (sym, die, attr, |
16595 | member_loc, cu); | |
16596 | } | |
16597 | else | |
16598 | dwarf2_complex_location_expr_complaint (); | |
16599 | } | |
16600 | } | |
c906108c | 16601 | } |
4357ac6c TT |
16602 | |
16603 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16604 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16605 | } |
16606 | } | |
16607 | ||
0114d602 | 16608 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16609 | |
0114d602 DJ |
16610 | static struct type * |
16611 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16612 | { |
5e22e966 | 16613 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16614 | const char *previous_prefix, *name; |
9219021c | 16615 | int is_anonymous; |
0114d602 DJ |
16616 | struct type *type; |
16617 | ||
16618 | /* For extensions, reuse the type of the original namespace. */ | |
16619 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16620 | { | |
16621 | struct die_info *ext_die; | |
16622 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16623 | |
0114d602 DJ |
16624 | ext_die = dwarf2_extension (die, &ext_cu); |
16625 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16626 | |
16627 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16628 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16629 | return set_die_type (die, type, cu); |
16630 | } | |
9219021c | 16631 | |
e142c38c | 16632 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16633 | |
16634 | /* Now build the name of the current namespace. */ | |
16635 | ||
0114d602 DJ |
16636 | previous_prefix = determine_prefix (die, cu); |
16637 | if (previous_prefix[0] != '\0') | |
16638 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16639 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16640 | |
16641 | /* Create the type. */ | |
19f392bc | 16642 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16643 | |
60531b24 | 16644 | return set_die_type (die, type, cu); |
0114d602 DJ |
16645 | } |
16646 | ||
22cee43f | 16647 | /* Read a namespace scope. */ |
0114d602 DJ |
16648 | |
16649 | static void | |
16650 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16651 | { | |
5e22e966 | 16652 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16653 | int is_anonymous; |
9219021c | 16654 | |
5c4e30ca DC |
16655 | /* Add a symbol associated to this if we haven't seen the namespace |
16656 | before. Also, add a using directive if it's an anonymous | |
16657 | namespace. */ | |
9219021c | 16658 | |
f2f0e013 | 16659 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16660 | { |
16661 | struct type *type; | |
16662 | ||
0114d602 | 16663 | type = read_type_die (die, cu); |
e7c27a73 | 16664 | new_symbol (die, type, cu); |
5c4e30ca | 16665 | |
e8e80198 | 16666 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16667 | if (is_anonymous) |
0114d602 DJ |
16668 | { |
16669 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16670 | |
eb1e02fd | 16671 | std::vector<const char *> excludes; |
804d2729 | 16672 | add_using_directive (using_directives (cu), |
7d93a1e0 | 16673 | previous_prefix, type->name (), NULL, |
eb1e02fd | 16674 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16675 | } |
5c4e30ca | 16676 | } |
9219021c | 16677 | |
639d11d3 | 16678 | if (die->child != NULL) |
d9fa45fe | 16679 | { |
639d11d3 | 16680 | struct die_info *child_die = die->child; |
6e70227d | 16681 | |
d9fa45fe DC |
16682 | while (child_die && child_die->tag) |
16683 | { | |
e7c27a73 | 16684 | process_die (child_die, cu); |
436c571c | 16685 | child_die = child_die->sibling; |
d9fa45fe DC |
16686 | } |
16687 | } | |
38d518c9 EZ |
16688 | } |
16689 | ||
f55ee35c JK |
16690 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16691 | imported module. Still we need that type as local Fortran "use ... only" | |
16692 | declaration imports depend on the created type in determine_prefix. */ | |
16693 | ||
16694 | static struct type * | |
16695 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16696 | { | |
5e22e966 | 16697 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 16698 | const char *module_name; |
f55ee35c JK |
16699 | struct type *type; |
16700 | ||
16701 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16702 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16703 | |
f55ee35c JK |
16704 | return set_die_type (die, type, cu); |
16705 | } | |
16706 | ||
5d7cb8df JK |
16707 | /* Read a Fortran module. */ |
16708 | ||
16709 | static void | |
16710 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16711 | { | |
16712 | struct die_info *child_die = die->child; | |
530e8392 KB |
16713 | struct type *type; |
16714 | ||
16715 | type = read_type_die (die, cu); | |
16716 | new_symbol (die, type, cu); | |
5d7cb8df | 16717 | |
5d7cb8df JK |
16718 | while (child_die && child_die->tag) |
16719 | { | |
16720 | process_die (child_die, cu); | |
436c571c | 16721 | child_die = child_die->sibling; |
5d7cb8df JK |
16722 | } |
16723 | } | |
16724 | ||
38d518c9 EZ |
16725 | /* Return the name of the namespace represented by DIE. Set |
16726 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16727 | namespace. */ | |
16728 | ||
16729 | static const char * | |
e142c38c | 16730 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16731 | { |
16732 | struct die_info *current_die; | |
16733 | const char *name = NULL; | |
16734 | ||
16735 | /* Loop through the extensions until we find a name. */ | |
16736 | ||
16737 | for (current_die = die; | |
16738 | current_die != NULL; | |
f2f0e013 | 16739 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16740 | { |
96553a0c DE |
16741 | /* We don't use dwarf2_name here so that we can detect the absence |
16742 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16743 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16744 | |
38d518c9 EZ |
16745 | if (name != NULL) |
16746 | break; | |
16747 | } | |
16748 | ||
16749 | /* Is it an anonymous namespace? */ | |
16750 | ||
16751 | *is_anonymous = (name == NULL); | |
16752 | if (*is_anonymous) | |
2b1dbab0 | 16753 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16754 | |
16755 | return name; | |
d9fa45fe DC |
16756 | } |
16757 | ||
c906108c SS |
16758 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16759 | the user defined type vector. */ | |
16760 | ||
f792889a | 16761 | static struct type * |
e7c27a73 | 16762 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16763 | { |
5e22e966 | 16764 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 16765 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16766 | struct type *type; |
8b2dbe47 KB |
16767 | struct attribute *attr_byte_size; |
16768 | struct attribute *attr_address_class; | |
16769 | int byte_size, addr_class; | |
7e314c57 JK |
16770 | struct type *target_type; |
16771 | ||
16772 | target_type = die_type (die, cu); | |
c906108c | 16773 | |
7e314c57 JK |
16774 | /* The die_type call above may have already set the type for this DIE. */ |
16775 | type = get_die_type (die, cu); | |
16776 | if (type) | |
16777 | return type; | |
16778 | ||
16779 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16780 | |
e142c38c | 16781 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16782 | if (attr_byte_size) |
16783 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16784 | else |
8b2dbe47 KB |
16785 | byte_size = cu_header->addr_size; |
16786 | ||
e142c38c | 16787 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16788 | if (attr_address_class) |
16789 | addr_class = DW_UNSND (attr_address_class); | |
16790 | else | |
16791 | addr_class = DW_ADDR_none; | |
16792 | ||
2b4424c3 TT |
16793 | ULONGEST alignment = get_alignment (cu, die); |
16794 | ||
16795 | /* If the pointer size, alignment, or address class is different | |
16796 | than the default, create a type variant marked as such and set | |
16797 | the length accordingly. */ | |
16798 | if (TYPE_LENGTH (type) != byte_size | |
16799 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16800 | && alignment != TYPE_RAW_ALIGN (type)) | |
16801 | || addr_class != DW_ADDR_none) | |
c906108c | 16802 | { |
5e2b427d | 16803 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16804 | { |
16805 | int type_flags; | |
16806 | ||
849957d9 | 16807 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16808 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16809 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16810 | == 0); | |
8b2dbe47 KB |
16811 | type = make_type_with_address_space (type, type_flags); |
16812 | } | |
16813 | else if (TYPE_LENGTH (type) != byte_size) | |
16814 | { | |
b98664d3 | 16815 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16816 | } |
2b4424c3 TT |
16817 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16818 | { | |
b98664d3 | 16819 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16820 | " - DIE at %s [in module %s]"), |
16821 | sect_offset_str (die->sect_off), | |
5e22e966 | 16822 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 16823 | } |
6e70227d | 16824 | else |
9a619af0 MS |
16825 | { |
16826 | /* Should we also complain about unhandled address classes? */ | |
16827 | } | |
c906108c | 16828 | } |
8b2dbe47 KB |
16829 | |
16830 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16831 | set_type_align (type, alignment); |
f792889a | 16832 | return set_die_type (die, type, cu); |
c906108c SS |
16833 | } |
16834 | ||
16835 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16836 | the user defined type vector. */ | |
16837 | ||
f792889a | 16838 | static struct type * |
e7c27a73 | 16839 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16840 | { |
16841 | struct type *type; | |
16842 | struct type *to_type; | |
16843 | struct type *domain; | |
16844 | ||
e7c27a73 DJ |
16845 | to_type = die_type (die, cu); |
16846 | domain = die_containing_type (die, cu); | |
0d5de010 | 16847 | |
7e314c57 JK |
16848 | /* The calls above may have already set the type for this DIE. */ |
16849 | type = get_die_type (die, cu); | |
16850 | if (type) | |
16851 | return type; | |
16852 | ||
78134374 | 16853 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 16854 | type = lookup_methodptr_type (to_type); |
78134374 | 16855 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 16856 | { |
5e22e966 | 16857 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
16858 | |
16859 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 16860 | to_type->fields (), to_type->num_fields (), |
7078baeb TT |
16861 | TYPE_VARARGS (to_type)); |
16862 | type = lookup_methodptr_type (new_type); | |
16863 | } | |
0d5de010 DJ |
16864 | else |
16865 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16866 | |
f792889a | 16867 | return set_die_type (die, type, cu); |
c906108c SS |
16868 | } |
16869 | ||
4297a3f0 | 16870 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16871 | the user defined type vector. */ |
16872 | ||
f792889a | 16873 | static struct type * |
4297a3f0 AV |
16874 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16875 | enum type_code refcode) | |
c906108c | 16876 | { |
e7c27a73 | 16877 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16878 | struct type *type, *target_type; |
c906108c SS |
16879 | struct attribute *attr; |
16880 | ||
4297a3f0 AV |
16881 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16882 | ||
7e314c57 JK |
16883 | target_type = die_type (die, cu); |
16884 | ||
16885 | /* The die_type call above may have already set the type for this DIE. */ | |
16886 | type = get_die_type (die, cu); | |
16887 | if (type) | |
16888 | return type; | |
16889 | ||
4297a3f0 | 16890 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16891 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16892 | if (attr != nullptr) |
c906108c SS |
16893 | { |
16894 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16895 | } | |
16896 | else | |
16897 | { | |
107d2387 | 16898 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16899 | } |
2b4424c3 | 16900 | maybe_set_alignment (cu, die, type); |
f792889a | 16901 | return set_die_type (die, type, cu); |
c906108c SS |
16902 | } |
16903 | ||
cf363f18 MW |
16904 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16905 | outputs DWARF type qualifiers that apply to an array, not the | |
16906 | element type. But GDB relies on the array element type to carry | |
16907 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16908 | specification. */ | |
16909 | ||
16910 | static struct type * | |
16911 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16912 | struct type *base_type, int cnst, int voltl) | |
16913 | { | |
16914 | struct type *el_type, *inner_array; | |
16915 | ||
16916 | base_type = copy_type (base_type); | |
16917 | inner_array = base_type; | |
16918 | ||
78134374 | 16919 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
16920 | { |
16921 | TYPE_TARGET_TYPE (inner_array) = | |
16922 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16923 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16924 | } | |
16925 | ||
16926 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16927 | cnst |= TYPE_CONST (el_type); | |
16928 | voltl |= TYPE_VOLATILE (el_type); | |
16929 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16930 | ||
16931 | return set_die_type (die, base_type, cu); | |
16932 | } | |
16933 | ||
f792889a | 16934 | static struct type * |
e7c27a73 | 16935 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16936 | { |
f792889a | 16937 | struct type *base_type, *cv_type; |
c906108c | 16938 | |
e7c27a73 | 16939 | base_type = die_type (die, cu); |
7e314c57 JK |
16940 | |
16941 | /* The die_type call above may have already set the type for this DIE. */ | |
16942 | cv_type = get_die_type (die, cu); | |
16943 | if (cv_type) | |
16944 | return cv_type; | |
16945 | ||
2f608a3a KW |
16946 | /* In case the const qualifier is applied to an array type, the element type |
16947 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 16948 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 16949 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16950 | |
f792889a DJ |
16951 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16952 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16953 | } |
16954 | ||
f792889a | 16955 | static struct type * |
e7c27a73 | 16956 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16957 | { |
f792889a | 16958 | struct type *base_type, *cv_type; |
c906108c | 16959 | |
e7c27a73 | 16960 | base_type = die_type (die, cu); |
7e314c57 JK |
16961 | |
16962 | /* The die_type call above may have already set the type for this DIE. */ | |
16963 | cv_type = get_die_type (die, cu); | |
16964 | if (cv_type) | |
16965 | return cv_type; | |
16966 | ||
cf363f18 MW |
16967 | /* In case the volatile qualifier is applied to an array type, the |
16968 | element type is so qualified, not the array type (section 6.7.3 | |
16969 | of C99). */ | |
78134374 | 16970 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
16971 | return add_array_cv_type (die, cu, base_type, 0, 1); |
16972 | ||
f792889a DJ |
16973 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16974 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16975 | } |
16976 | ||
06d66ee9 TT |
16977 | /* Handle DW_TAG_restrict_type. */ |
16978 | ||
16979 | static struct type * | |
16980 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16981 | { | |
16982 | struct type *base_type, *cv_type; | |
16983 | ||
16984 | base_type = die_type (die, cu); | |
16985 | ||
16986 | /* The die_type call above may have already set the type for this DIE. */ | |
16987 | cv_type = get_die_type (die, cu); | |
16988 | if (cv_type) | |
16989 | return cv_type; | |
16990 | ||
16991 | cv_type = make_restrict_type (base_type); | |
16992 | return set_die_type (die, cv_type, cu); | |
16993 | } | |
16994 | ||
a2c2acaf MW |
16995 | /* Handle DW_TAG_atomic_type. */ |
16996 | ||
16997 | static struct type * | |
16998 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16999 | { | |
17000 | struct type *base_type, *cv_type; | |
17001 | ||
17002 | base_type = die_type (die, cu); | |
17003 | ||
17004 | /* The die_type call above may have already set the type for this DIE. */ | |
17005 | cv_type = get_die_type (die, cu); | |
17006 | if (cv_type) | |
17007 | return cv_type; | |
17008 | ||
17009 | cv_type = make_atomic_type (base_type); | |
17010 | return set_die_type (die, cv_type, cu); | |
17011 | } | |
17012 | ||
c906108c SS |
17013 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17014 | the user defined type vector. It isn't really a user defined type, | |
17015 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17016 | attribute to reference it. */ | |
17017 | ||
f792889a | 17018 | static struct type * |
e7c27a73 | 17019 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17020 | { |
5e22e966 | 17021 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17022 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17023 | struct type *type, *range_type, *index_type, *char_type; |
17024 | struct attribute *attr; | |
216a7e6b AB |
17025 | struct dynamic_prop prop; |
17026 | bool length_is_constant = true; | |
17027 | LONGEST length; | |
17028 | ||
17029 | /* There are a couple of places where bit sizes might be made use of | |
17030 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17031 | of make use of these. Handling bit sizes that are a multiple of the | |
17032 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17033 | with that problem when we have to. Warn about these attributes being | |
17034 | unsupported, then parse the type and ignore them like we always | |
17035 | have. */ | |
17036 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17037 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17038 | { | |
17039 | static bool warning_printed = false; | |
17040 | if (!warning_printed) | |
17041 | { | |
17042 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17043 | "currently supported on DW_TAG_string_type.")); | |
17044 | warning_printed = true; | |
17045 | } | |
17046 | } | |
c906108c | 17047 | |
e142c38c | 17048 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17049 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17050 | { |
17051 | /* The string length describes the location at which the length of | |
17052 | the string can be found. The size of the length field can be | |
17053 | specified with one of the attributes below. */ | |
17054 | struct type *prop_type; | |
17055 | struct attribute *len | |
17056 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17057 | if (len == nullptr) | |
17058 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17059 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17060 | { |
17061 | /* Pass 0 as the default as we know this attribute is constant | |
17062 | and the default value will not be returned. */ | |
0826b30a | 17063 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17064 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17065 | } |
17066 | else | |
17067 | { | |
17068 | /* If the size is not specified then we assume it is the size of | |
17069 | an address on this target. */ | |
293e7e51 | 17070 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17071 | } |
17072 | ||
17073 | /* Convert the attribute into a dynamic property. */ | |
17074 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17075 | length = 1; | |
17076 | else | |
17077 | length_is_constant = false; | |
17078 | } | |
17079 | else if (attr != nullptr) | |
17080 | { | |
17081 | /* This DW_AT_string_length just contains the length with no | |
17082 | indirection. There's no need to create a dynamic property in this | |
17083 | case. Pass 0 for the default value as we know it will not be | |
17084 | returned in this case. */ | |
0826b30a | 17085 | length = attr->constant_value (0); |
216a7e6b AB |
17086 | } |
17087 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17088 | { |
216a7e6b | 17089 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17090 | length = attr->constant_value (1); |
c906108c SS |
17091 | } |
17092 | else | |
17093 | { | |
216a7e6b AB |
17094 | /* Use 1 as a fallback length if we have nothing else. */ |
17095 | length = 1; | |
c906108c | 17096 | } |
6ccb9162 | 17097 | |
46bf5051 | 17098 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17099 | if (length_is_constant) |
17100 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17101 | else | |
17102 | { | |
17103 | struct dynamic_prop low_bound; | |
17104 | ||
17105 | low_bound.kind = PROP_CONST; | |
17106 | low_bound.data.const_val = 1; | |
17107 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
17108 | } | |
3b7538c0 UW |
17109 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17110 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17111 | |
f792889a | 17112 | return set_die_type (die, type, cu); |
c906108c SS |
17113 | } |
17114 | ||
4d804846 JB |
17115 | /* Assuming that DIE corresponds to a function, returns nonzero |
17116 | if the function is prototyped. */ | |
17117 | ||
17118 | static int | |
17119 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17120 | { | |
17121 | struct attribute *attr; | |
17122 | ||
17123 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17124 | if (attr && (DW_UNSND (attr) != 0)) | |
17125 | return 1; | |
17126 | ||
17127 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17128 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17129 | languages that allow unprototyped functions (Eg: Objective C). |
17130 | For all other languages, assume that functions are always | |
17131 | prototyped. */ | |
17132 | if (cu->language != language_c | |
17133 | && cu->language != language_objc | |
17134 | && cu->language != language_opencl) | |
17135 | return 1; | |
17136 | ||
17137 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17138 | prototyped and unprototyped functions; default to prototyped, | |
17139 | since that is more common in modern code (and RealView warns | |
17140 | about unprototyped functions). */ | |
17141 | if (producer_is_realview (cu->producer)) | |
17142 | return 1; | |
17143 | ||
17144 | return 0; | |
17145 | } | |
17146 | ||
c906108c SS |
17147 | /* Handle DIES due to C code like: |
17148 | ||
17149 | struct foo | |
c5aa993b JM |
17150 | { |
17151 | int (*funcp)(int a, long l); | |
17152 | int b; | |
17153 | }; | |
c906108c | 17154 | |
0963b4bd | 17155 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17156 | |
f792889a | 17157 | static struct type * |
e7c27a73 | 17158 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17159 | { |
5e22e966 | 17160 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17161 | struct type *type; /* Type that this function returns. */ |
17162 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17163 | struct attribute *attr; |
17164 | ||
e7c27a73 | 17165 | type = die_type (die, cu); |
7e314c57 JK |
17166 | |
17167 | /* The die_type call above may have already set the type for this DIE. */ | |
17168 | ftype = get_die_type (die, cu); | |
17169 | if (ftype) | |
17170 | return ftype; | |
17171 | ||
0c8b41f1 | 17172 | ftype = lookup_function_type (type); |
c906108c | 17173 | |
4d804846 | 17174 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17175 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17176 | |
c055b101 CV |
17177 | /* Store the calling convention in the type if it's available in |
17178 | the subroutine die. Otherwise set the calling convention to | |
17179 | the default value DW_CC_normal. */ | |
17180 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17181 | if (attr != nullptr |
17182 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17183 | TYPE_CALLING_CONVENTION (ftype) | |
17184 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17185 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17186 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17187 | else | |
17188 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17189 | |
743649fd MW |
17190 | /* Record whether the function returns normally to its caller or not |
17191 | if the DWARF producer set that information. */ | |
17192 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17193 | if (attr && (DW_UNSND (attr) != 0)) | |
17194 | TYPE_NO_RETURN (ftype) = 1; | |
17195 | ||
76c10ea2 GM |
17196 | /* We need to add the subroutine type to the die immediately so |
17197 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17198 | declared as the same subroutine type. */ |
76c10ea2 | 17199 | set_die_type (die, ftype, cu); |
6e70227d | 17200 | |
639d11d3 | 17201 | if (die->child != NULL) |
c906108c | 17202 | { |
bb5ed363 | 17203 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17204 | struct die_info *child_die; |
8072405b | 17205 | int nparams, iparams; |
c906108c SS |
17206 | |
17207 | /* Count the number of parameters. | |
17208 | FIXME: GDB currently ignores vararg functions, but knows about | |
17209 | vararg member functions. */ | |
8072405b | 17210 | nparams = 0; |
639d11d3 | 17211 | child_die = die->child; |
c906108c SS |
17212 | while (child_die && child_die->tag) |
17213 | { | |
17214 | if (child_die->tag == DW_TAG_formal_parameter) | |
17215 | nparams++; | |
17216 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17217 | TYPE_VARARGS (ftype) = 1; |
436c571c | 17218 | child_die = child_die->sibling; |
c906108c SS |
17219 | } |
17220 | ||
17221 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17222 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17223 | ftype->set_fields |
17224 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17225 | |
8072405b JK |
17226 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17227 | even if we error out during the parameters reading below. */ | |
17228 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 17229 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
17230 | |
17231 | iparams = 0; | |
639d11d3 | 17232 | child_die = die->child; |
c906108c SS |
17233 | while (child_die && child_die->tag) |
17234 | { | |
17235 | if (child_die->tag == DW_TAG_formal_parameter) | |
17236 | { | |
3ce3b1ba PA |
17237 | struct type *arg_type; |
17238 | ||
17239 | /* DWARF version 2 has no clean way to discern C++ | |
17240 | static and non-static member functions. G++ helps | |
17241 | GDB by marking the first parameter for non-static | |
17242 | member functions (which is the this pointer) as | |
17243 | artificial. We pass this information to | |
17244 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17245 | ||
17246 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17247 | 4.5 does not yet generate. */ | |
e142c38c | 17248 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17249 | if (attr != nullptr) |
c906108c SS |
17250 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17251 | else | |
9c37b5ae | 17252 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17253 | arg_type = die_type (child_die, cu); |
17254 | ||
17255 | /* RealView does not mark THIS as const, which the testsuite | |
17256 | expects. GCC marks THIS as const in method definitions, | |
17257 | but not in the class specifications (GCC PR 43053). */ | |
17258 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17259 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17260 | { | |
17261 | int is_this = 0; | |
17262 | struct dwarf2_cu *arg_cu = cu; | |
17263 | const char *name = dwarf2_name (child_die, cu); | |
17264 | ||
17265 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17266 | if (attr != nullptr) |
3ce3b1ba PA |
17267 | { |
17268 | /* If the compiler emits this, use it. */ | |
17269 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17270 | is_this = 1; | |
17271 | } | |
17272 | else if (name && strcmp (name, "this") == 0) | |
17273 | /* Function definitions will have the argument names. */ | |
17274 | is_this = 1; | |
17275 | else if (name == NULL && iparams == 0) | |
17276 | /* Declarations may not have the names, so like | |
17277 | elsewhere in GDB, assume an artificial first | |
17278 | argument is "this". */ | |
17279 | is_this = 1; | |
17280 | ||
17281 | if (is_this) | |
17282 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17283 | arg_type, 0); | |
17284 | } | |
17285 | ||
5d14b6e5 | 17286 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
17287 | iparams++; |
17288 | } | |
436c571c | 17289 | child_die = child_die->sibling; |
c906108c SS |
17290 | } |
17291 | } | |
17292 | ||
76c10ea2 | 17293 | return ftype; |
c906108c SS |
17294 | } |
17295 | ||
f792889a | 17296 | static struct type * |
e7c27a73 | 17297 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17298 | { |
5e22e966 | 17299 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17300 | const char *name = NULL; |
3c8e0968 | 17301 | struct type *this_type, *target_type; |
c906108c | 17302 | |
94af9270 | 17303 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17304 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17305 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17306 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17307 | target_type = die_type (die, cu); |
17308 | if (target_type != this_type) | |
17309 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17310 | else | |
17311 | { | |
17312 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17313 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17314 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17315 | "- DIE at %s [in module %s]"), |
17316 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17317 | TYPE_TARGET_TYPE (this_type) = NULL; |
17318 | } | |
e4003a34 TV |
17319 | if (name == NULL) |
17320 | { | |
17321 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17322 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17323 | Handle these by just returning the target type, rather than | |
17324 | constructing an anonymous typedef type and trying to handle this | |
17325 | elsewhere. */ | |
17326 | set_die_type (die, target_type, cu); | |
17327 | return target_type; | |
17328 | } | |
f792889a | 17329 | return this_type; |
c906108c SS |
17330 | } |
17331 | ||
9b790ce7 UW |
17332 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17333 | (which may be different from NAME) to the architecture back-end to allow | |
17334 | it to guess the correct format if necessary. */ | |
17335 | ||
17336 | static struct type * | |
17337 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17338 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 17339 | { |
08feed99 | 17340 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
17341 | const struct floatformat **format; |
17342 | struct type *type; | |
17343 | ||
17344 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17345 | if (format) | |
103a685e | 17346 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17347 | else |
77b7c781 | 17348 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17349 | |
17350 | return type; | |
17351 | } | |
17352 | ||
eb77c9df AB |
17353 | /* Allocate an integer type of size BITS and name NAME. */ |
17354 | ||
17355 | static struct type * | |
17356 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17357 | int bits, int unsigned_p, const char *name) | |
17358 | { | |
17359 | struct type *type; | |
17360 | ||
17361 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17362 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17363 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17364 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17365 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17366 | type = objfile_type (objfile)->builtin_void; |
17367 | else | |
17368 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17369 | ||
17370 | return type; | |
17371 | } | |
17372 | ||
8bdc1658 AB |
17373 | /* Initialise and return a floating point type of size BITS suitable for |
17374 | use as a component of a complex number. The NAME_HINT is passed through | |
17375 | when initialising the floating point type and is the name of the complex | |
17376 | type. | |
17377 | ||
17378 | As DWARF doesn't currently provide an explicit name for the components | |
17379 | of a complex number, but it can be helpful to have these components | |
17380 | named, we try to select a suitable name based on the size of the | |
17381 | component. */ | |
17382 | static struct type * | |
17383 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17384 | struct objfile *objfile, | |
103a685e TT |
17385 | int bits, const char *name_hint, |
17386 | enum bfd_endian byte_order) | |
8bdc1658 | 17387 | { |
08feed99 | 17388 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
17389 | struct type *tt = nullptr; |
17390 | ||
35add35e AB |
17391 | /* Try to find a suitable floating point builtin type of size BITS. |
17392 | We're going to use the name of this type as the name for the complex | |
17393 | target type that we are about to create. */ | |
1db455a7 | 17394 | switch (cu->language) |
8bdc1658 | 17395 | { |
1db455a7 AB |
17396 | case language_fortran: |
17397 | switch (bits) | |
17398 | { | |
17399 | case 32: | |
17400 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17401 | break; | |
17402 | case 64: | |
17403 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17404 | break; | |
17405 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17406 | case 128: | |
17407 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17408 | break; | |
17409 | } | |
8bdc1658 | 17410 | break; |
1db455a7 AB |
17411 | default: |
17412 | switch (bits) | |
17413 | { | |
17414 | case 32: | |
17415 | tt = builtin_type (gdbarch)->builtin_float; | |
17416 | break; | |
17417 | case 64: | |
17418 | tt = builtin_type (gdbarch)->builtin_double; | |
17419 | break; | |
17420 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17421 | case 128: | |
17422 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17423 | break; | |
17424 | } | |
8bdc1658 AB |
17425 | break; |
17426 | } | |
17427 | ||
35add35e AB |
17428 | /* If the type we found doesn't match the size we were looking for, then |
17429 | pretend we didn't find a type at all, the complex target type we | |
17430 | create will then be nameless. */ | |
a12e5744 | 17431 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17432 | tt = nullptr; |
17433 | ||
7d93a1e0 | 17434 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 17435 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17436 | } |
17437 | ||
c906108c SS |
17438 | /* Find a representation of a given base type and install |
17439 | it in the TYPE field of the die. */ | |
17440 | ||
f792889a | 17441 | static struct type * |
e7c27a73 | 17442 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17443 | { |
5e22e966 | 17444 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
17445 | struct type *type; |
17446 | struct attribute *attr; | |
19f392bc | 17447 | int encoding = 0, bits = 0; |
15d034d0 | 17448 | const char *name; |
34877895 | 17449 | gdbarch *arch; |
c906108c | 17450 | |
e142c38c | 17451 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17452 | if (attr != nullptr) |
34877895 | 17453 | encoding = DW_UNSND (attr); |
e142c38c | 17454 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17455 | if (attr != nullptr) |
34877895 | 17456 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17457 | name = dwarf2_name (die, cu); |
6ccb9162 | 17458 | if (!name) |
34877895 | 17459 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 17460 | |
08feed99 | 17461 | arch = objfile->arch (); |
103a685e TT |
17462 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
17463 | ||
34877895 PJ |
17464 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17465 | if (attr) | |
103a685e TT |
17466 | { |
17467 | int endianity = DW_UNSND (attr); | |
17468 | ||
17469 | switch (endianity) | |
17470 | { | |
17471 | case DW_END_big: | |
17472 | byte_order = BFD_ENDIAN_BIG; | |
17473 | break; | |
17474 | case DW_END_little: | |
17475 | byte_order = BFD_ENDIAN_LITTLE; | |
17476 | break; | |
17477 | default: | |
17478 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17479 | break; | |
17480 | } | |
17481 | } | |
6ccb9162 UW |
17482 | |
17483 | switch (encoding) | |
c906108c | 17484 | { |
6ccb9162 UW |
17485 | case DW_ATE_address: |
17486 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17487 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17488 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17489 | break; |
17490 | case DW_ATE_boolean: | |
19f392bc | 17491 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17492 | break; |
17493 | case DW_ATE_complex_float: | |
103a685e TT |
17494 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17495 | byte_order); | |
78134374 | 17496 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
17497 | { |
17498 | if (name == nullptr) | |
17499 | { | |
17500 | struct obstack *obstack | |
5e22e966 | 17501 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 17502 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
17503 | nullptr); |
17504 | } | |
17505 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
17506 | } | |
17507 | else | |
17508 | type = init_complex_type (name, type); | |
6ccb9162 UW |
17509 | break; |
17510 | case DW_ATE_decimal_float: | |
19f392bc | 17511 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17512 | break; |
17513 | case DW_ATE_float: | |
103a685e | 17514 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
17515 | break; |
17516 | case DW_ATE_signed: | |
eb77c9df | 17517 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17518 | break; |
17519 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17520 | if (cu->language == language_fortran |
17521 | && name | |
61012eef | 17522 | && startswith (name, "character(")) |
19f392bc UW |
17523 | type = init_character_type (objfile, bits, 1, name); |
17524 | else | |
eb77c9df | 17525 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17526 | break; |
17527 | case DW_ATE_signed_char: | |
6e70227d | 17528 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17529 | || cu->language == language_pascal |
17530 | || cu->language == language_fortran) | |
19f392bc UW |
17531 | type = init_character_type (objfile, bits, 0, name); |
17532 | else | |
eb77c9df | 17533 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17534 | break; |
17535 | case DW_ATE_unsigned_char: | |
868a0084 | 17536 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17537 | || cu->language == language_pascal |
c44af4eb TT |
17538 | || cu->language == language_fortran |
17539 | || cu->language == language_rust) | |
19f392bc UW |
17540 | type = init_character_type (objfile, bits, 1, name); |
17541 | else | |
eb77c9df | 17542 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17543 | break; |
75079b2b | 17544 | case DW_ATE_UTF: |
53e710ac | 17545 | { |
53e710ac PA |
17546 | if (bits == 16) |
17547 | type = builtin_type (arch)->builtin_char16; | |
17548 | else if (bits == 32) | |
17549 | type = builtin_type (arch)->builtin_char32; | |
17550 | else | |
17551 | { | |
b98664d3 | 17552 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17553 | bits); |
eb77c9df | 17554 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17555 | } |
17556 | return set_die_type (die, type, cu); | |
17557 | } | |
75079b2b TT |
17558 | break; |
17559 | ||
6ccb9162 | 17560 | default: |
b98664d3 | 17561 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17562 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17563 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17564 | break; |
c906108c | 17565 | } |
6ccb9162 | 17566 | |
0114d602 | 17567 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17568 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17569 | |
2b4424c3 TT |
17570 | maybe_set_alignment (cu, die, type); |
17571 | ||
103a685e | 17572 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17573 | |
f792889a | 17574 | return set_die_type (die, type, cu); |
c906108c SS |
17575 | } |
17576 | ||
80180f79 SA |
17577 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17578 | resulting value of the attribute into struct bound_prop. | |
17579 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17580 | ||
17581 | static int | |
17582 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17583 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17584 | struct type *default_type) | |
80180f79 SA |
17585 | { |
17586 | struct dwarf2_property_baton *baton; | |
5e22e966 | 17587 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
17588 | struct objfile *objfile = per_objfile->objfile; |
17589 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 17590 | |
9a49df9d AB |
17591 | gdb_assert (default_type != NULL); |
17592 | ||
80180f79 SA |
17593 | if (attr == NULL || prop == NULL) |
17594 | return 0; | |
17595 | ||
4fc6c0d5 | 17596 | if (attr->form_is_block ()) |
80180f79 | 17597 | { |
8d749320 | 17598 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17599 | baton->property_type = default_type; |
80180f79 | 17600 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17601 | baton->locexpr.per_objfile = per_objfile; |
80180f79 SA |
17602 | baton->locexpr.size = DW_BLOCK (attr)->size; |
17603 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17604 | switch (attr->name) |
17605 | { | |
17606 | case DW_AT_string_length: | |
17607 | baton->locexpr.is_reference = true; | |
17608 | break; | |
17609 | default: | |
17610 | baton->locexpr.is_reference = false; | |
17611 | break; | |
17612 | } | |
80180f79 SA |
17613 | prop->data.baton = baton; |
17614 | prop->kind = PROP_LOCEXPR; | |
17615 | gdb_assert (prop->data.baton != NULL); | |
17616 | } | |
cd6c91b4 | 17617 | else if (attr->form_is_ref ()) |
80180f79 SA |
17618 | { |
17619 | struct dwarf2_cu *target_cu = cu; | |
17620 | struct die_info *target_die; | |
17621 | struct attribute *target_attr; | |
17622 | ||
17623 | target_die = follow_die_ref (die, attr, &target_cu); | |
17624 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17625 | if (target_attr == NULL) |
17626 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17627 | target_cu); | |
80180f79 SA |
17628 | if (target_attr == NULL) |
17629 | return 0; | |
17630 | ||
df25ebbd | 17631 | switch (target_attr->name) |
80180f79 | 17632 | { |
df25ebbd | 17633 | case DW_AT_location: |
cd6c91b4 | 17634 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17635 | { |
8d749320 | 17636 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17637 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17638 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17639 | prop->data.baton = baton; | |
17640 | prop->kind = PROP_LOCLIST; | |
17641 | gdb_assert (prop->data.baton != NULL); | |
17642 | } | |
4fc6c0d5 | 17643 | else if (target_attr->form_is_block ()) |
df25ebbd | 17644 | { |
8d749320 | 17645 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17646 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 17647 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17648 | baton->locexpr.per_objfile = per_objfile; |
df25ebbd JB |
17649 | baton->locexpr.size = DW_BLOCK (target_attr)->size; |
17650 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17651 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17652 | prop->data.baton = baton; |
17653 | prop->kind = PROP_LOCEXPR; | |
17654 | gdb_assert (prop->data.baton != NULL); | |
17655 | } | |
17656 | else | |
17657 | { | |
17658 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17659 | "dynamic property"); | |
17660 | return 0; | |
17661 | } | |
17662 | break; | |
17663 | case DW_AT_data_member_location: | |
17664 | { | |
17665 | LONGEST offset; | |
17666 | ||
17667 | if (!handle_data_member_location (target_die, target_cu, | |
17668 | &offset)) | |
17669 | return 0; | |
17670 | ||
8d749320 | 17671 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17672 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17673 | target_cu); |
df25ebbd JB |
17674 | baton->offset_info.offset = offset; |
17675 | baton->offset_info.type = die_type (target_die, target_cu); | |
17676 | prop->data.baton = baton; | |
17677 | prop->kind = PROP_ADDR_OFFSET; | |
17678 | break; | |
17679 | } | |
80180f79 SA |
17680 | } |
17681 | } | |
cd6c91b4 | 17682 | else if (attr->form_is_constant ()) |
80180f79 | 17683 | { |
0826b30a | 17684 | prop->data.const_val = attr->constant_value (0); |
80180f79 SA |
17685 | prop->kind = PROP_CONST; |
17686 | } | |
17687 | else | |
17688 | { | |
17689 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17690 | dwarf2_name (die, cu)); | |
17691 | return 0; | |
17692 | } | |
17693 | ||
17694 | return 1; | |
17695 | } | |
17696 | ||
09ba997f | 17697 | /* See read.h. */ |
9a49df9d | 17698 | |
09ba997f | 17699 | struct type * |
293e7e51 | 17700 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 17701 | { |
9a49df9d AB |
17702 | struct type *int_type; |
17703 | ||
17704 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17705 | #define TRY_TYPE(F) \ |
17706 | int_type = (unsigned_p \ | |
17707 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17708 | : objfile_type (objfile)->builtin_ ## F); \ | |
17709 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17710 | return int_type |
17711 | ||
17712 | TRY_TYPE (char); | |
17713 | TRY_TYPE (short); | |
17714 | TRY_TYPE (int); | |
17715 | TRY_TYPE (long); | |
17716 | TRY_TYPE (long_long); | |
17717 | ||
17718 | #undef TRY_TYPE | |
17719 | ||
17720 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17721 | } | |
17722 | ||
09ba997f | 17723 | /* See read.h. */ |
11a8b164 | 17724 | |
09ba997f | 17725 | struct type * |
293e7e51 | 17726 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 17727 | { |
293e7e51 SM |
17728 | int addr_size = this->per_cu->addr_size (); |
17729 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
17730 | } |
17731 | ||
b86352cf AB |
17732 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17733 | present (which is valid) then compute the default type based on the | |
17734 | compilation units address size. */ | |
17735 | ||
17736 | static struct type * | |
17737 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17738 | { | |
17739 | struct type *index_type = die_type (die, cu); | |
17740 | ||
17741 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17742 | without specifying a base type. | |
17743 | In that case, the base type must be set to the type of | |
17744 | the lower bound, upper bound or count, in that order, if any of these | |
17745 | three attributes references an object that has a type. | |
17746 | If no base type is found, the Dwarf-2 specifications say that | |
17747 | a signed integer type of size equal to the size of an address should | |
17748 | be used. | |
17749 | For the following C code: `extern char gdb_int [];' | |
17750 | GCC produces an empty range DIE. | |
17751 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17752 | high bound or count are not yet handled by this code. */ | |
78134374 | 17753 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 17754 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
17755 | |
17756 | return index_type; | |
17757 | } | |
17758 | ||
a02abb62 JB |
17759 | /* Read the given DW_AT_subrange DIE. */ |
17760 | ||
f792889a | 17761 | static struct type * |
a02abb62 JB |
17762 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17763 | { | |
4c9ad8c2 | 17764 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17765 | struct type *range_type; |
17766 | struct attribute *attr; | |
729efb13 | 17767 | struct dynamic_prop low, high; |
4fae6e18 | 17768 | int low_default_is_valid; |
c451ebe5 | 17769 | int high_bound_is_count = 0; |
15d034d0 | 17770 | const char *name; |
d359392f | 17771 | ULONGEST negative_mask; |
e77813c8 | 17772 | |
b86352cf AB |
17773 | orig_base_type = read_subrange_index_type (die, cu); |
17774 | ||
4c9ad8c2 TT |
17775 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17776 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17777 | creating the range type, but we use the result of check_typedef | |
17778 | when examining properties of the type. */ | |
17779 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17780 | |
7e314c57 JK |
17781 | /* The die_type call above may have already set the type for this DIE. */ |
17782 | range_type = get_die_type (die, cu); | |
17783 | if (range_type) | |
17784 | return range_type; | |
17785 | ||
729efb13 SA |
17786 | low.kind = PROP_CONST; |
17787 | high.kind = PROP_CONST; | |
17788 | high.data.const_val = 0; | |
17789 | ||
4fae6e18 JK |
17790 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17791 | omitting DW_AT_lower_bound. */ | |
17792 | switch (cu->language) | |
6e70227d | 17793 | { |
4fae6e18 JK |
17794 | case language_c: |
17795 | case language_cplus: | |
729efb13 | 17796 | low.data.const_val = 0; |
4fae6e18 JK |
17797 | low_default_is_valid = 1; |
17798 | break; | |
17799 | case language_fortran: | |
729efb13 | 17800 | low.data.const_val = 1; |
4fae6e18 JK |
17801 | low_default_is_valid = 1; |
17802 | break; | |
17803 | case language_d: | |
4fae6e18 | 17804 | case language_objc: |
c44af4eb | 17805 | case language_rust: |
729efb13 | 17806 | low.data.const_val = 0; |
4fae6e18 JK |
17807 | low_default_is_valid = (cu->header.version >= 4); |
17808 | break; | |
17809 | case language_ada: | |
17810 | case language_m2: | |
17811 | case language_pascal: | |
729efb13 | 17812 | low.data.const_val = 1; |
4fae6e18 JK |
17813 | low_default_is_valid = (cu->header.version >= 4); |
17814 | break; | |
17815 | default: | |
729efb13 | 17816 | low.data.const_val = 0; |
4fae6e18 JK |
17817 | low_default_is_valid = 0; |
17818 | break; | |
a02abb62 JB |
17819 | } |
17820 | ||
e142c38c | 17821 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17822 | if (attr != nullptr) |
9a49df9d | 17823 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17824 | else if (!low_default_is_valid) |
b98664d3 | 17825 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17826 | "- DIE at %s [in module %s]"), |
17827 | sect_offset_str (die->sect_off), | |
5e22e966 | 17828 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 17829 | |
506f5c41 TV |
17830 | struct attribute *attr_ub, *attr_count; |
17831 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17832 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17833 | { |
506f5c41 | 17834 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17835 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17836 | { |
c451ebe5 SA |
17837 | /* If bounds are constant do the final calculation here. */ |
17838 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17839 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17840 | else | |
17841 | high_bound_is_count = 1; | |
c2ff108b | 17842 | } |
506f5c41 TV |
17843 | else |
17844 | { | |
17845 | if (attr_ub != NULL) | |
17846 | complaint (_("Unresolved DW_AT_upper_bound " | |
17847 | "- DIE at %s [in module %s]"), | |
17848 | sect_offset_str (die->sect_off), | |
5e22e966 | 17849 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
17850 | if (attr_count != NULL) |
17851 | complaint (_("Unresolved DW_AT_count " | |
17852 | "- DIE at %s [in module %s]"), | |
17853 | sect_offset_str (die->sect_off), | |
5e22e966 | 17854 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 17855 | } |
e77813c8 | 17856 | } |
a02abb62 | 17857 | |
4e962e74 TT |
17858 | LONGEST bias = 0; |
17859 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17860 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 17861 | bias = bias_attr->constant_value (0); |
4e962e74 | 17862 | |
dbb9c2b1 JB |
17863 | /* Normally, the DWARF producers are expected to use a signed |
17864 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17865 | But this is unfortunately not always the case, as witnessed | |
17866 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17867 | is used instead. To work around that ambiguity, we treat | |
17868 | the bounds as signed, and thus sign-extend their values, when | |
17869 | the base type is signed. */ | |
6e70227d | 17870 | negative_mask = |
d359392f | 17871 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17872 | if (low.kind == PROP_CONST |
17873 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17874 | low.data.const_val |= negative_mask; | |
17875 | if (high.kind == PROP_CONST | |
17876 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17877 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17878 | |
5bbd8269 AB |
17879 | /* Check for bit and byte strides. */ |
17880 | struct dynamic_prop byte_stride_prop; | |
17881 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17882 | if (attr_byte_stride != nullptr) | |
17883 | { | |
293e7e51 | 17884 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
17885 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
17886 | prop_type); | |
17887 | } | |
17888 | ||
17889 | struct dynamic_prop bit_stride_prop; | |
17890 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17891 | if (attr_bit_stride != nullptr) | |
17892 | { | |
17893 | /* It only makes sense to have either a bit or byte stride. */ | |
17894 | if (attr_byte_stride != nullptr) | |
17895 | { | |
17896 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17897 | "- DIE at %s [in module %s]"), | |
17898 | sect_offset_str (die->sect_off), | |
5e22e966 | 17899 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
17900 | attr_bit_stride = nullptr; |
17901 | } | |
17902 | else | |
17903 | { | |
293e7e51 | 17904 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
17905 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
17906 | prop_type); | |
17907 | } | |
17908 | } | |
17909 | ||
17910 | if (attr_byte_stride != nullptr | |
17911 | || attr_bit_stride != nullptr) | |
17912 | { | |
17913 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17914 | struct dynamic_prop *stride | |
17915 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17916 | ||
17917 | range_type | |
17918 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17919 | &high, bias, stride, byte_stride_p); | |
17920 | } | |
17921 | else | |
17922 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17923 | |
c451ebe5 SA |
17924 | if (high_bound_is_count) |
17925 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17926 | ||
c2ff108b JK |
17927 | /* Ada expects an empty array on no boundary attributes. */ |
17928 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17929 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17930 | |
39cbfefa DJ |
17931 | name = dwarf2_name (die, cu); |
17932 | if (name) | |
d0e39ea2 | 17933 | range_type->set_name (name); |
6e70227d | 17934 | |
e142c38c | 17935 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17936 | if (attr != nullptr) |
a02abb62 JB |
17937 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17938 | ||
2b4424c3 TT |
17939 | maybe_set_alignment (cu, die, range_type); |
17940 | ||
7e314c57 JK |
17941 | set_die_type (die, range_type, cu); |
17942 | ||
17943 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17944 | set_descriptive_type (range_type, die, cu); |
17945 | ||
7e314c57 | 17946 | return range_type; |
a02abb62 | 17947 | } |
6e70227d | 17948 | |
f792889a | 17949 | static struct type * |
81a17f79 JB |
17950 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17951 | { | |
17952 | struct type *type; | |
81a17f79 | 17953 | |
5e22e966 | 17954 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 17955 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 17956 | |
74a2f8ff | 17957 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17958 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17959 | such a type, we treat it as a stub, and try to resolve it later on, |
17960 | when needed. */ | |
17961 | if (cu->language == language_ada) | |
17962 | TYPE_STUB (type) = 1; | |
17963 | ||
f792889a | 17964 | return set_die_type (die, type, cu); |
81a17f79 | 17965 | } |
a02abb62 | 17966 | |
639d11d3 DC |
17967 | /* Read a single die and all its descendents. Set the die's sibling |
17968 | field to NULL; set other fields in the die correctly, and set all | |
17969 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17970 | location of the info_ptr after reading all of those dies. PARENT | |
17971 | is the parent of the die in question. */ | |
17972 | ||
17973 | static struct die_info * | |
dee91e82 | 17974 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17975 | const gdb_byte *info_ptr, |
17976 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17977 | struct die_info *parent) |
639d11d3 DC |
17978 | { |
17979 | struct die_info *die; | |
d521ce57 | 17980 | const gdb_byte *cur_ptr; |
639d11d3 | 17981 | |
3e225074 | 17982 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
17983 | if (die == NULL) |
17984 | { | |
17985 | *new_info_ptr = cur_ptr; | |
17986 | return NULL; | |
17987 | } | |
93311388 | 17988 | store_in_ref_table (die, reader->cu); |
639d11d3 | 17989 | |
3e225074 | 17990 | if (die->has_children) |
bf6af496 | 17991 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17992 | else |
17993 | { | |
17994 | die->child = NULL; | |
17995 | *new_info_ptr = cur_ptr; | |
17996 | } | |
17997 | ||
17998 | die->sibling = NULL; | |
17999 | die->parent = parent; | |
18000 | return die; | |
18001 | } | |
18002 | ||
18003 | /* Read a die, all of its descendents, and all of its siblings; set | |
18004 | all of the fields of all of the dies correctly. Arguments are as | |
18005 | in read_die_and_children. */ | |
18006 | ||
18007 | static struct die_info * | |
bf6af496 | 18008 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18009 | const gdb_byte *info_ptr, |
18010 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18011 | struct die_info *parent) |
639d11d3 DC |
18012 | { |
18013 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18014 | const gdb_byte *cur_ptr; |
639d11d3 | 18015 | |
c906108c | 18016 | cur_ptr = info_ptr; |
639d11d3 DC |
18017 | first_die = last_sibling = NULL; |
18018 | ||
18019 | while (1) | |
c906108c | 18020 | { |
639d11d3 | 18021 | struct die_info *die |
dee91e82 | 18022 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18023 | |
1d325ec1 | 18024 | if (die == NULL) |
c906108c | 18025 | { |
639d11d3 DC |
18026 | *new_info_ptr = cur_ptr; |
18027 | return first_die; | |
c906108c | 18028 | } |
1d325ec1 DJ |
18029 | |
18030 | if (!first_die) | |
18031 | first_die = die; | |
c906108c | 18032 | else |
1d325ec1 DJ |
18033 | last_sibling->sibling = die; |
18034 | ||
18035 | last_sibling = die; | |
c906108c | 18036 | } |
c906108c SS |
18037 | } |
18038 | ||
bf6af496 DE |
18039 | /* Read a die, all of its descendents, and all of its siblings; set |
18040 | all of the fields of all of the dies correctly. Arguments are as | |
18041 | in read_die_and_children. | |
18042 | This the main entry point for reading a DIE and all its children. */ | |
18043 | ||
18044 | static struct die_info * | |
18045 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18046 | const gdb_byte *info_ptr, |
18047 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18048 | struct die_info *parent) |
18049 | { | |
18050 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18051 | new_info_ptr, parent); | |
18052 | ||
b4f54984 | 18053 | if (dwarf_die_debug) |
bf6af496 DE |
18054 | { |
18055 | fprintf_unfiltered (gdb_stdlog, | |
18056 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18057 | reader->die_section->get_name (), |
bf6af496 DE |
18058 | (unsigned) (info_ptr - reader->die_section->buffer), |
18059 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18060 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18061 | } |
18062 | ||
18063 | return die; | |
18064 | } | |
18065 | ||
3019eac3 DE |
18066 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18067 | attributes. | |
18068 | The caller is responsible for filling in the extra attributes | |
18069 | and updating (*DIEP)->num_attrs. | |
18070 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18071 | except for its child, sibling, and parent fields. */ |
93311388 | 18072 | |
d521ce57 | 18073 | static const gdb_byte * |
3019eac3 | 18074 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18075 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 18076 | int num_extra_attrs) |
93311388 | 18077 | { |
b64f50a1 | 18078 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18079 | struct abbrev_info *abbrev; |
18080 | struct die_info *die; | |
18081 | struct dwarf2_cu *cu = reader->cu; | |
18082 | bfd *abfd = reader->abfd; | |
18083 | ||
9c541725 | 18084 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18085 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18086 | info_ptr += bytes_read; | |
18087 | if (!abbrev_number) | |
18088 | { | |
18089 | *diep = NULL; | |
93311388 DE |
18090 | return info_ptr; |
18091 | } | |
18092 | ||
685af9cd | 18093 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18094 | if (!abbrev) |
348e048f DE |
18095 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18096 | abbrev_number, | |
18097 | bfd_get_filename (abfd)); | |
18098 | ||
3019eac3 | 18099 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18100 | die->sect_off = sect_off; |
93311388 DE |
18101 | die->tag = abbrev->tag; |
18102 | die->abbrev = abbrev_number; | |
3e225074 | 18103 | die->has_children = abbrev->has_children; |
93311388 | 18104 | |
3019eac3 DE |
18105 | /* Make the result usable. |
18106 | The caller needs to update num_attrs after adding the extra | |
18107 | attributes. */ | |
93311388 DE |
18108 | die->num_attrs = abbrev->num_attrs; |
18109 | ||
18a8505e | 18110 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 18111 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
18112 | { |
18113 | bool need_reprocess; | |
18114 | info_ptr = | |
18115 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
18116 | info_ptr, &need_reprocess); | |
18117 | if (need_reprocess) | |
18118 | indexes_that_need_reprocess.push_back (i); | |
18119 | } | |
18120 | ||
052c8bb8 | 18121 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
18122 | if (attr != nullptr) |
18123 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18124 | |
41144253 | 18125 | attr = die->attr (DW_AT_loclists_base); |
18126 | if (attr != nullptr) | |
18127 | cu->loclist_base = DW_UNSND (attr); | |
18128 | ||
a39fdb41 | 18129 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
18130 | if (maybe_addr_base.has_value ()) |
18131 | cu->addr_base = *maybe_addr_base; | |
18132 | for (int index : indexes_that_need_reprocess) | |
18133 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 18134 | *diep = die; |
93311388 DE |
18135 | return info_ptr; |
18136 | } | |
18137 | ||
3019eac3 DE |
18138 | /* Read a die and all its attributes. |
18139 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18140 | except for its child, sibling, and parent fields. */ |
3019eac3 | 18141 | |
d521ce57 | 18142 | static const gdb_byte * |
3019eac3 | 18143 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 18144 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 18145 | { |
d521ce57 | 18146 | const gdb_byte *result; |
bf6af496 | 18147 | |
3e225074 | 18148 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 18149 | |
b4f54984 | 18150 | if (dwarf_die_debug) |
bf6af496 DE |
18151 | { |
18152 | fprintf_unfiltered (gdb_stdlog, | |
18153 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18154 | reader->die_section->get_name (), |
bf6af496 DE |
18155 | (unsigned) (info_ptr - reader->die_section->buffer), |
18156 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18157 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18158 | } |
18159 | ||
18160 | return result; | |
3019eac3 | 18161 | } |
433df2d4 | 18162 | \f |
c906108c | 18163 | |
72bf9492 DJ |
18164 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18165 | symbol for. */ | |
18166 | ||
18167 | static int | |
18168 | is_type_tag_for_partial (int tag) | |
18169 | { | |
18170 | switch (tag) | |
18171 | { | |
18172 | #if 0 | |
18173 | /* Some types that would be reasonable to generate partial symbols for, | |
18174 | that we don't at present. */ | |
18175 | case DW_TAG_array_type: | |
18176 | case DW_TAG_file_type: | |
18177 | case DW_TAG_ptr_to_member_type: | |
18178 | case DW_TAG_set_type: | |
18179 | case DW_TAG_string_type: | |
18180 | case DW_TAG_subroutine_type: | |
18181 | #endif | |
18182 | case DW_TAG_base_type: | |
18183 | case DW_TAG_class_type: | |
680b30c7 | 18184 | case DW_TAG_interface_type: |
72bf9492 DJ |
18185 | case DW_TAG_enumeration_type: |
18186 | case DW_TAG_structure_type: | |
18187 | case DW_TAG_subrange_type: | |
18188 | case DW_TAG_typedef: | |
18189 | case DW_TAG_union_type: | |
18190 | return 1; | |
18191 | default: | |
18192 | return 0; | |
18193 | } | |
18194 | } | |
18195 | ||
18196 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18197 | ||
18198 | static struct partial_die_info * | |
dee91e82 | 18199 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18200 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18201 | { |
dee91e82 | 18202 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18203 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 18204 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18205 | unsigned int bytes_read; |
5afb4e99 | 18206 | unsigned int load_all = 0; |
72bf9492 DJ |
18207 | int nesting_level = 1; |
18208 | ||
18209 | parent_die = NULL; | |
18210 | last_die = NULL; | |
18211 | ||
7adf1e79 DE |
18212 | gdb_assert (cu->per_cu != NULL); |
18213 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18214 | load_all = 1; |
18215 | ||
72bf9492 DJ |
18216 | cu->partial_dies |
18217 | = htab_create_alloc_ex (cu->header.length / 12, | |
18218 | partial_die_hash, | |
18219 | partial_die_eq, | |
18220 | NULL, | |
18221 | &cu->comp_unit_obstack, | |
18222 | hashtab_obstack_allocate, | |
18223 | dummy_obstack_deallocate); | |
18224 | ||
72bf9492 DJ |
18225 | while (1) |
18226 | { | |
685af9cd | 18227 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18228 | |
18229 | /* A NULL abbrev means the end of a series of children. */ | |
18230 | if (abbrev == NULL) | |
18231 | { | |
18232 | if (--nesting_level == 0) | |
cd9983dd YQ |
18233 | return first_die; |
18234 | ||
72bf9492 DJ |
18235 | info_ptr += bytes_read; |
18236 | last_die = parent_die; | |
18237 | parent_die = parent_die->die_parent; | |
18238 | continue; | |
18239 | } | |
18240 | ||
98bfdba5 PA |
18241 | /* Check for template arguments. We never save these; if |
18242 | they're seen, we just mark the parent, and go on our way. */ | |
18243 | if (parent_die != NULL | |
18244 | && cu->language == language_cplus | |
18245 | && (abbrev->tag == DW_TAG_template_type_param | |
18246 | || abbrev->tag == DW_TAG_template_value_param)) | |
18247 | { | |
18248 | parent_die->has_template_arguments = 1; | |
18249 | ||
18250 | if (!load_all) | |
18251 | { | |
18252 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18253 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18254 | continue; |
18255 | } | |
18256 | } | |
18257 | ||
0d99eb77 | 18258 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18259 | Skip their other children. */ |
18260 | if (!load_all | |
18261 | && cu->language == language_cplus | |
18262 | && parent_die != NULL | |
f9b5d5ea TV |
18263 | && parent_die->tag == DW_TAG_subprogram |
18264 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 18265 | { |
dee91e82 | 18266 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18267 | continue; |
18268 | } | |
18269 | ||
5afb4e99 DJ |
18270 | /* Check whether this DIE is interesting enough to save. Normally |
18271 | we would not be interested in members here, but there may be | |
18272 | later variables referencing them via DW_AT_specification (for | |
18273 | static members). */ | |
18274 | if (!load_all | |
18275 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18276 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18277 | && abbrev->tag != DW_TAG_enumerator |
18278 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18279 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18280 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18281 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18282 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18283 | && abbrev->tag != DW_TAG_module |
95554aad | 18284 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18285 | && abbrev->tag != DW_TAG_imported_unit |
18286 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18287 | { |
18288 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18289 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18290 | continue; |
18291 | } | |
18292 | ||
6f06d47b YQ |
18293 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18294 | abbrev); | |
cd9983dd | 18295 | |
48fbe735 | 18296 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18297 | |
18298 | /* This two-pass algorithm for processing partial symbols has a | |
18299 | high cost in cache pressure. Thus, handle some simple cases | |
18300 | here which cover the majority of C partial symbols. DIEs | |
18301 | which neither have specification tags in them, nor could have | |
18302 | specification tags elsewhere pointing at them, can simply be | |
18303 | processed and discarded. | |
18304 | ||
18305 | This segment is also optional; scan_partial_symbols and | |
18306 | add_partial_symbol will handle these DIEs if we chain | |
18307 | them in normally. When compilers which do not emit large | |
18308 | quantities of duplicate debug information are more common, | |
18309 | this code can probably be removed. */ | |
18310 | ||
18311 | /* Any complete simple types at the top level (pretty much all | |
18312 | of them, for a language without namespaces), can be processed | |
18313 | directly. */ | |
18314 | if (parent_die == NULL | |
cd9983dd YQ |
18315 | && pdi.has_specification == 0 |
18316 | && pdi.is_declaration == 0 | |
18317 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18318 | || pdi.tag == DW_TAG_base_type | |
18319 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18320 | { |
7d00ffec | 18321 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
18322 | add_partial_symbol (&pdi, cu); |
18323 | ||
cd9983dd | 18324 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18325 | continue; |
18326 | } | |
18327 | ||
d8228535 JK |
18328 | /* The exception for DW_TAG_typedef with has_children above is |
18329 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18330 | type_name_or_error will error on such types later. |
d8228535 JK |
18331 | |
18332 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18333 | it could not find the child DIEs referenced later, this is checked | |
18334 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18335 | ||
cd9983dd | 18336 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18337 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18338 | "- DIE at %s [in module %s]"), |
cd9983dd | 18339 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18340 | |
72bf9492 DJ |
18341 | /* If we're at the second level, and we're an enumerator, and |
18342 | our parent has no specification (meaning possibly lives in a | |
18343 | namespace elsewhere), then we can add the partial symbol now | |
18344 | instead of queueing it. */ | |
cd9983dd | 18345 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18346 | && parent_die != NULL |
18347 | && parent_die->die_parent == NULL | |
18348 | && parent_die->tag == DW_TAG_enumeration_type | |
18349 | && parent_die->has_specification == 0) | |
18350 | { | |
7d00ffec | 18351 | if (pdi.raw_name == NULL) |
b98664d3 | 18352 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18353 | else if (building_psymtab) |
f0fbb768 | 18354 | add_partial_symbol (&pdi, cu); |
72bf9492 | 18355 | |
cd9983dd | 18356 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18357 | continue; |
18358 | } | |
18359 | ||
cd9983dd | 18360 | struct partial_die_info *part_die |
6f06d47b | 18361 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18362 | |
72bf9492 DJ |
18363 | /* We'll save this DIE so link it in. */ |
18364 | part_die->die_parent = parent_die; | |
18365 | part_die->die_sibling = NULL; | |
18366 | part_die->die_child = NULL; | |
18367 | ||
18368 | if (last_die && last_die == parent_die) | |
18369 | last_die->die_child = part_die; | |
18370 | else if (last_die) | |
18371 | last_die->die_sibling = part_die; | |
18372 | ||
18373 | last_die = part_die; | |
18374 | ||
18375 | if (first_die == NULL) | |
18376 | first_die = part_die; | |
18377 | ||
18378 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18379 | find interesting need to be in the hash table, because we | |
18380 | also have the parent/sibling/child chains; only those that we | |
18381 | might refer to by offset later during partial symbol reading. | |
18382 | ||
18383 | For now this means things that might have be the target of a | |
18384 | DW_AT_specification, DW_AT_abstract_origin, or | |
18385 | DW_AT_extension. DW_AT_extension will refer only to | |
18386 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18387 | many things under the function DIE, but we do not recurse | |
18388 | into function DIEs during partial symbol reading) and | |
18389 | possibly variables as well; DW_AT_specification refers to | |
18390 | declarations. Declarations ought to have the DW_AT_declaration | |
18391 | flag. It happens that GCC forgets to put it in sometimes, but | |
18392 | only for functions, not for types. | |
18393 | ||
18394 | Adding more things than necessary to the hash table is harmless | |
18395 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18396 | wasted time in find_partial_die, when we reread the compilation |
18397 | unit with load_all_dies set. */ | |
72bf9492 | 18398 | |
5afb4e99 | 18399 | if (load_all |
72929c62 | 18400 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18401 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18402 | || abbrev->tag == DW_TAG_variable |
18403 | || abbrev->tag == DW_TAG_namespace | |
18404 | || part_die->is_declaration) | |
18405 | { | |
18406 | void **slot; | |
18407 | ||
18408 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18409 | to_underlying (part_die->sect_off), |
18410 | INSERT); | |
72bf9492 DJ |
18411 | *slot = part_die; |
18412 | } | |
18413 | ||
72bf9492 | 18414 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18415 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18416 | languages we have to, so that we can get at method physnames |
18417 | to infer fully qualified class names, for DW_AT_specification, | |
18418 | and for C++ template arguments. For C++, we also look one level | |
18419 | inside functions to find template arguments (if the name of the | |
18420 | function does not already contain the template arguments). | |
bc30ff58 | 18421 | |
0a4b0913 AB |
18422 | For Ada and Fortran, we need to scan the children of subprograms |
18423 | and lexical blocks as well because these languages allow the | |
18424 | definition of nested entities that could be interesting for the | |
18425 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18426 | if (last_die->has_children |
5afb4e99 DJ |
18427 | && (load_all |
18428 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18429 | || last_die->tag == DW_TAG_module |
72bf9492 | 18430 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18431 | || (cu->language == language_cplus |
18432 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
18433 | && (last_die->raw_name == NULL |
18434 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
18435 | || (cu->language != language_c |
18436 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18437 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18438 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18439 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18440 | || ((cu->language == language_ada |
18441 | || cu->language == language_fortran) | |
bc30ff58 JB |
18442 | && (last_die->tag == DW_TAG_subprogram |
18443 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18444 | { |
18445 | nesting_level++; | |
18446 | parent_die = last_die; | |
18447 | continue; | |
18448 | } | |
18449 | ||
18450 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18451 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18452 | |
18453 | /* Back to the top, do it again. */ | |
18454 | } | |
18455 | } | |
18456 | ||
6f06d47b YQ |
18457 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18458 | struct abbrev_info *abbrev) | |
18459 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18460 | { | |
18461 | } | |
18462 | ||
7d00ffec TT |
18463 | /* See class definition. */ |
18464 | ||
18465 | const char * | |
18466 | partial_die_info::name (dwarf2_cu *cu) | |
18467 | { | |
18468 | if (!canonical_name && raw_name != nullptr) | |
18469 | { | |
18470 | struct objfile *objfile = cu->per_objfile->objfile; | |
18471 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
18472 | canonical_name = 1; | |
18473 | } | |
18474 | ||
18475 | return raw_name; | |
18476 | } | |
18477 | ||
35cc7ed7 YQ |
18478 | /* Read a minimal amount of information into the minimal die structure. |
18479 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18480 | |
48fbe735 YQ |
18481 | const gdb_byte * |
18482 | partial_die_info::read (const struct die_reader_specs *reader, | |
18483 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18484 | { |
dee91e82 | 18485 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 18486 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 18487 | unsigned int i; |
c5aa993b | 18488 | int has_low_pc_attr = 0; |
c906108c | 18489 | int has_high_pc_attr = 0; |
91da1414 | 18490 | int high_pc_relative = 0; |
c906108c | 18491 | |
fd0a254f | 18492 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18493 | { |
e7da7f8f | 18494 | attribute attr; |
18a8505e | 18495 | bool need_reprocess; |
e7da7f8f | 18496 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], |
18a8505e AT |
18497 | info_ptr, &need_reprocess); |
18498 | /* String and address offsets that need to do the reprocessing have | |
18499 | already been read at this point, so there is no need to wait until | |
18500 | the loop terminates to do the reprocessing. */ | |
18501 | if (need_reprocess) | |
e7da7f8f | 18502 | read_attribute_reprocess (reader, &attr); |
c906108c | 18503 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18504 | partial symbol table. */ |
c906108c SS |
18505 | switch (attr.name) |
18506 | { | |
18507 | case DW_AT_name: | |
48fbe735 | 18508 | switch (tag) |
71c25dea TT |
18509 | { |
18510 | case DW_TAG_compile_unit: | |
95554aad | 18511 | case DW_TAG_partial_unit: |
348e048f | 18512 | case DW_TAG_type_unit: |
71c25dea TT |
18513 | /* Compilation units have a DW_AT_name that is a filename, not |
18514 | a source language identifier. */ | |
18515 | case DW_TAG_enumeration_type: | |
18516 | case DW_TAG_enumerator: | |
18517 | /* These tags always have simple identifiers already; no need | |
18518 | to canonicalize them. */ | |
7d00ffec TT |
18519 | canonical_name = 1; |
18520 | raw_name = DW_STRING (&attr); | |
71c25dea TT |
18521 | break; |
18522 | default: | |
7d00ffec TT |
18523 | canonical_name = 0; |
18524 | raw_name = DW_STRING (&attr); | |
71c25dea TT |
18525 | break; |
18526 | } | |
c906108c | 18527 | break; |
31ef98ae | 18528 | case DW_AT_linkage_name: |
c906108c | 18529 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18530 | /* Note that both forms of linkage name might appear. We |
18531 | assume they will be the same, and we only store the last | |
18532 | one we see. */ | |
e61108c9 | 18533 | linkage_name = attr.value_as_string (); |
787de330 TT |
18534 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
18535 | See https://github.com/rust-lang/rust/issues/32925. */ | |
18536 | if (cu->language == language_rust && linkage_name != NULL | |
18537 | && strchr (linkage_name, '{') != NULL) | |
18538 | linkage_name = NULL; | |
c906108c SS |
18539 | break; |
18540 | case DW_AT_low_pc: | |
18541 | has_low_pc_attr = 1; | |
cd6c91b4 | 18542 | lowpc = attr.value_as_address (); |
c906108c SS |
18543 | break; |
18544 | case DW_AT_high_pc: | |
18545 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
18546 | highpc = attr.value_as_address (); |
18547 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 18548 | high_pc_relative = 1; |
c906108c SS |
18549 | break; |
18550 | case DW_AT_location: | |
0963b4bd | 18551 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 18552 | if (attr.form_is_block ()) |
8e19ed76 | 18553 | { |
48fbe735 | 18554 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18555 | } |
cd6c91b4 | 18556 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 18557 | { |
4d3c2250 | 18558 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18559 | } |
18560 | else | |
18561 | { | |
4d3c2250 KB |
18562 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18563 | "partial symbol information"); | |
8e19ed76 | 18564 | } |
c906108c | 18565 | break; |
c906108c | 18566 | case DW_AT_external: |
48fbe735 | 18567 | is_external = DW_UNSND (&attr); |
c906108c SS |
18568 | break; |
18569 | case DW_AT_declaration: | |
48fbe735 | 18570 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18571 | break; |
18572 | case DW_AT_type: | |
48fbe735 | 18573 | has_type = 1; |
c906108c SS |
18574 | break; |
18575 | case DW_AT_abstract_origin: | |
18576 | case DW_AT_specification: | |
72bf9492 | 18577 | case DW_AT_extension: |
48fbe735 | 18578 | has_specification = 1; |
0826b30a | 18579 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 18580 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 18581 | || cu->per_cu->is_dwz); |
c906108c SS |
18582 | break; |
18583 | case DW_AT_sibling: | |
18584 | /* Ignore absolute siblings, they might point outside of | |
18585 | the current compile unit. */ | |
18586 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18587 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18588 | else |
b9502d3f | 18589 | { |
48fbe735 | 18590 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 18591 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 18592 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
18593 | |
18594 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18595 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 18596 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 18597 | reader->die_section->overflow_complaint (); |
b9502d3f | 18598 | else |
48fbe735 | 18599 | sibling = sibling_ptr; |
b9502d3f | 18600 | } |
c906108c | 18601 | break; |
fa4028e9 | 18602 | case DW_AT_byte_size: |
48fbe735 | 18603 | has_byte_size = 1; |
fa4028e9 | 18604 | break; |
ff908ebf | 18605 | case DW_AT_const_value: |
48fbe735 | 18606 | has_const_value = 1; |
ff908ebf | 18607 | break; |
68511cec CES |
18608 | case DW_AT_calling_convention: |
18609 | /* DWARF doesn't provide a way to identify a program's source-level | |
18610 | entry point. DW_AT_calling_convention attributes are only meant | |
18611 | to describe functions' calling conventions. | |
18612 | ||
18613 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18614 | Fortran, and before DWARF 4 DW_CC_program was the only |
18615 | piece of debugging information whose definition refers to | |
18616 | a 'main program' at all, several compilers marked Fortran | |
18617 | main programs with DW_CC_program --- even when those | |
18618 | functions use the standard calling conventions. | |
18619 | ||
18620 | Although DWARF now specifies a way to provide this | |
18621 | information, we support this practice for backward | |
18622 | compatibility. */ | |
68511cec | 18623 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18624 | && cu->language == language_fortran) |
48fbe735 | 18625 | main_subprogram = 1; |
68511cec | 18626 | break; |
481860b3 GB |
18627 | case DW_AT_inline: |
18628 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18629 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18630 | may_be_inlined = 1; |
481860b3 | 18631 | break; |
95554aad TT |
18632 | |
18633 | case DW_AT_import: | |
48fbe735 | 18634 | if (tag == DW_TAG_imported_unit) |
36586728 | 18635 | { |
0826b30a | 18636 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 18637 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
18638 | || cu->per_cu->is_dwz); |
18639 | } | |
95554aad TT |
18640 | break; |
18641 | ||
0c1b455e | 18642 | case DW_AT_main_subprogram: |
48fbe735 | 18643 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18644 | break; |
18645 | ||
05caa1d2 TT |
18646 | case DW_AT_ranges: |
18647 | { | |
18648 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18649 | but that requires a full DIE, so instead we just | |
18650 | reimplement it. */ | |
18651 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18652 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18653 | + (need_ranges_base | |
18654 | ? cu->ranges_base | |
18655 | : 0)); | |
18656 | ||
18657 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18658 | .debug_ranges section. */ | |
18659 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18660 | nullptr)) | |
18661 | has_pc_info = 1; | |
18662 | } | |
18663 | break; | |
18664 | ||
c906108c SS |
18665 | default: |
18666 | break; | |
18667 | } | |
18668 | } | |
18669 | ||
10d06d82 TT |
18670 | /* For Ada, if both the name and the linkage name appear, we prefer |
18671 | the latter. This lets "catch exception" work better, regardless | |
18672 | of the order in which the name and linkage name were emitted. | |
18673 | Really, though, this is just a workaround for the fact that gdb | |
18674 | doesn't store both the name and the linkage name. */ | |
18675 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 18676 | raw_name = linkage_name; |
10d06d82 | 18677 | |
91da1414 | 18678 | if (high_pc_relative) |
48fbe735 | 18679 | highpc += lowpc; |
91da1414 | 18680 | |
9373cf26 JK |
18681 | if (has_low_pc_attr && has_high_pc_attr) |
18682 | { | |
18683 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18684 | eliminate duplicate copies of functions and vtables and such. | |
18685 | The linker will arbitrarily choose one and discard the others. | |
18686 | The AT_*_pc values for such functions refer to local labels in | |
18687 | these sections. If the section from that file was discarded, the | |
18688 | labels are not in the output, so the relocs get a value of 0. | |
18689 | If this is a discarded function, mark the pc bounds as invalid, | |
18690 | so that GDB will ignore it. */ | |
976ca316 | 18691 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 18692 | { |
976ca316 | 18693 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 18694 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18695 | |
b98664d3 | 18696 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18697 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18698 | paddress (gdbarch, lowpc), |
18699 | sect_offset_str (sect_off), | |
9d8780f0 | 18700 | objfile_name (objfile)); |
9373cf26 JK |
18701 | } |
18702 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18703 | else if (lowpc >= highpc) |
9373cf26 | 18704 | { |
976ca316 | 18705 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 18706 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18707 | |
b98664d3 | 18708 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18709 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18710 | paddress (gdbarch, lowpc), |
18711 | paddress (gdbarch, highpc), | |
18712 | sect_offset_str (sect_off), | |
9c541725 | 18713 | objfile_name (objfile)); |
9373cf26 JK |
18714 | } |
18715 | else | |
48fbe735 | 18716 | has_pc_info = 1; |
9373cf26 | 18717 | } |
85cbf3d3 | 18718 | |
c906108c SS |
18719 | return info_ptr; |
18720 | } | |
18721 | ||
72bf9492 DJ |
18722 | /* Find a cached partial DIE at OFFSET in CU. */ |
18723 | ||
d590ff25 YQ |
18724 | struct partial_die_info * |
18725 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18726 | { |
18727 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18728 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18729 | |
9a3c8263 | 18730 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18731 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18732 | to_underlying (sect_off))); |
72bf9492 | 18733 | |
72bf9492 DJ |
18734 | return lookup_die; |
18735 | } | |
18736 | ||
348e048f DE |
18737 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18738 | except in the case of .debug_types DIEs which do not reference | |
18739 | outside their CU (they do however referencing other types via | |
55f1336d | 18740 | DW_FORM_ref_sig8). */ |
72bf9492 | 18741 | |
122cf0f2 | 18742 | static const struct cu_partial_die_info |
9c541725 | 18743 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18744 | { |
976ca316 SM |
18745 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
18746 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 18747 | struct partial_die_info *pd = NULL; |
72bf9492 | 18748 | |
36586728 | 18749 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 18750 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 18751 | { |
d590ff25 | 18752 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18753 | if (pd != NULL) |
fb816e8b | 18754 | return { cu, pd }; |
0d99eb77 DE |
18755 | /* We missed recording what we needed. |
18756 | Load all dies and try again. */ | |
5afb4e99 | 18757 | } |
0d99eb77 DE |
18758 | else |
18759 | { | |
18760 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18761 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18762 | { |
9d8780f0 SM |
18763 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18764 | " external reference to offset %s [in module %s].\n"), | |
18765 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18766 | bfd_get_filename (objfile->obfd)); |
18767 | } | |
7188ed02 SM |
18768 | dwarf2_per_cu_data *per_cu |
18769 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 18770 | per_objfile); |
72bf9492 | 18771 | |
976ca316 | 18772 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 18773 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 18774 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 18775 | |
976ca316 | 18776 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
18777 | |
18778 | cu->last_used = 0; | |
18779 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 18780 | } |
5afb4e99 | 18781 | |
dee91e82 DE |
18782 | /* If we didn't find it, and not all dies have been loaded, |
18783 | load them all and try again. */ | |
18784 | ||
7188ed02 | 18785 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 18786 | { |
7188ed02 | 18787 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
18788 | |
18789 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18790 | THIS_CU->cu may already be in use. So we can't just free it and | |
18791 | replace its DIEs with the ones we read in. Instead, we leave those | |
18792 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18793 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18794 | set. */ | |
976ca316 | 18795 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 18796 | |
7188ed02 | 18797 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18798 | } |
18799 | ||
18800 | if (pd == NULL) | |
18801 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18802 | _("could not find partial DIE %s " |
3e43a32a | 18803 | "in cache [from module %s]\n"), |
9d8780f0 | 18804 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 18805 | return { cu, pd }; |
72bf9492 DJ |
18806 | } |
18807 | ||
abc72ce4 DE |
18808 | /* See if we can figure out if the class lives in a namespace. We do |
18809 | this by looking for a member function; its demangled name will | |
18810 | contain namespace info, if there is any. */ | |
18811 | ||
18812 | static void | |
18813 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18814 | struct dwarf2_cu *cu) | |
18815 | { | |
18816 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18817 | what template types look like, because the demangler | |
18818 | frequently doesn't give the same name as the debug info. We | |
18819 | could fix this by only using the demangled name to get the | |
18820 | prefix (but see comment in read_structure_type). */ | |
18821 | ||
18822 | struct partial_die_info *real_pdi; | |
18823 | struct partial_die_info *child_pdi; | |
18824 | ||
18825 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18826 | we should not do this. We'll prepend the parent's fully qualified | |
18827 | name when we create the partial symbol. */ | |
18828 | ||
18829 | real_pdi = struct_pdi; | |
18830 | while (real_pdi->has_specification) | |
fb816e8b | 18831 | { |
122cf0f2 AB |
18832 | auto res = find_partial_die (real_pdi->spec_offset, |
18833 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18834 | real_pdi = res.pdi; |
18835 | cu = res.cu; | |
18836 | } | |
abc72ce4 DE |
18837 | |
18838 | if (real_pdi->die_parent != NULL) | |
18839 | return; | |
18840 | ||
18841 | for (child_pdi = struct_pdi->die_child; | |
18842 | child_pdi != NULL; | |
18843 | child_pdi = child_pdi->die_sibling) | |
18844 | { | |
18845 | if (child_pdi->tag == DW_TAG_subprogram | |
18846 | && child_pdi->linkage_name != NULL) | |
18847 | { | |
43816ebc TT |
18848 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18849 | (language_class_name_from_physname (cu->language_defn, | |
18850 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18851 | if (actual_class_name != NULL) |
18852 | { | |
5e22e966 | 18853 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
18854 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
18855 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
18856 | } |
18857 | break; | |
18858 | } | |
18859 | } | |
18860 | } | |
18861 | ||
25c11aca TV |
18862 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
18863 | attribute. */ | |
18864 | ||
18865 | static bool | |
18866 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
18867 | { | |
18868 | switch (tag) | |
18869 | { | |
18870 | case DW_TAG_constant: | |
18871 | case DW_TAG_enumerator: | |
18872 | case DW_TAG_formal_parameter: | |
18873 | case DW_TAG_template_value_param: | |
18874 | case DW_TAG_variable: | |
18875 | return true; | |
18876 | } | |
18877 | ||
18878 | return false; | |
18879 | } | |
18880 | ||
52356b79 YQ |
18881 | void |
18882 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18883 | { |
abc72ce4 DE |
18884 | /* Once we've fixed up a die, there's no point in doing so again. |
18885 | This also avoids a memory leak if we were to call | |
18886 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18887 | if (fixup_called) |
abc72ce4 DE |
18888 | return; |
18889 | ||
72bf9492 DJ |
18890 | /* If we found a reference attribute and the DIE has no name, try |
18891 | to find a name in the referred to DIE. */ | |
18892 | ||
7d00ffec | 18893 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
18894 | { |
18895 | struct partial_die_info *spec_die; | |
72bf9492 | 18896 | |
122cf0f2 | 18897 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18898 | spec_die = res.pdi; |
18899 | cu = res.cu; | |
72bf9492 | 18900 | |
52356b79 | 18901 | spec_die->fixup (cu); |
72bf9492 | 18902 | |
7d00ffec | 18903 | if (spec_die->raw_name) |
72bf9492 | 18904 | { |
7d00ffec TT |
18905 | raw_name = spec_die->raw_name; |
18906 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
18907 | |
18908 | /* Copy DW_AT_external attribute if it is set. */ | |
18909 | if (spec_die->is_external) | |
52356b79 | 18910 | is_external = spec_die->is_external; |
72bf9492 DJ |
18911 | } |
18912 | } | |
18913 | ||
25c11aca TV |
18914 | if (!has_const_value && has_specification |
18915 | && can_have_DW_AT_const_value_p (tag)) | |
18916 | { | |
18917 | struct partial_die_info *spec_die; | |
18918 | ||
18919 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
18920 | spec_die = res.pdi; | |
18921 | cu = res.cu; | |
18922 | ||
18923 | spec_die->fixup (cu); | |
18924 | ||
18925 | if (spec_die->has_const_value) | |
18926 | { | |
18927 | /* Copy DW_AT_const_value attribute if it is set. */ | |
18928 | has_const_value = spec_die->has_const_value; | |
18929 | } | |
18930 | } | |
18931 | ||
72bf9492 | 18932 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 18933 | |
7d00ffec TT |
18934 | if (raw_name == NULL && tag == DW_TAG_namespace) |
18935 | { | |
18936 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
18937 | canonical_name = 1; | |
18938 | } | |
72bf9492 | 18939 | |
abc72ce4 DE |
18940 | /* If there is no parent die to provide a namespace, and there are |
18941 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18942 | name. */ |
abc72ce4 | 18943 | if (cu->language == language_cplus |
5e22e966 | 18944 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
18945 | && die_parent == NULL |
18946 | && has_children | |
18947 | && (tag == DW_TAG_class_type | |
18948 | || tag == DW_TAG_structure_type | |
18949 | || tag == DW_TAG_union_type)) | |
18950 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18951 | |
53832f31 TT |
18952 | /* GCC might emit a nameless struct or union that has a linkage |
18953 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 18954 | if (raw_name == NULL |
52356b79 YQ |
18955 | && (tag == DW_TAG_class_type |
18956 | || tag == DW_TAG_interface_type | |
18957 | || tag == DW_TAG_structure_type | |
18958 | || tag == DW_TAG_union_type) | |
18959 | && linkage_name != NULL) | |
53832f31 | 18960 | { |
43816ebc TT |
18961 | gdb::unique_xmalloc_ptr<char> demangled |
18962 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18963 | if (demangled != nullptr) | |
53832f31 | 18964 | { |
96408a79 SA |
18965 | const char *base; |
18966 | ||
18967 | /* Strip any leading namespaces/classes, keep only the base name. | |
18968 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18969 | base = strrchr (demangled.get (), ':'); |
18970 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18971 | base++; |
18972 | else | |
43816ebc | 18973 | base = demangled.get (); |
96408a79 | 18974 | |
5e22e966 | 18975 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
18976 | raw_name = objfile->intern (base); |
18977 | canonical_name = 1; | |
53832f31 TT |
18978 | } |
18979 | } | |
18980 | ||
52356b79 | 18981 | fixup_called = 1; |
72bf9492 DJ |
18982 | } |
18983 | ||
41144253 | 18984 | /* Read the .debug_loclists header contents from the given SECTION in the |
18985 | HEADER. */ | |
18986 | static void | |
18987 | read_loclist_header (struct loclist_header *header, | |
18988 | struct dwarf2_section_info *section) | |
18989 | { | |
18990 | unsigned int bytes_read; | |
18991 | bfd *abfd = section->get_bfd_owner (); | |
18992 | const gdb_byte *info_ptr = section->buffer; | |
18993 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
18994 | info_ptr += bytes_read; | |
18995 | header->version = read_2_bytes (abfd, info_ptr); | |
18996 | info_ptr += 2; | |
18997 | header->addr_size = read_1_byte (abfd, info_ptr); | |
18998 | info_ptr += 1; | |
18999 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
19000 | info_ptr += 1; | |
19001 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
19002 | } | |
19003 | ||
19004 | /* Return the DW_AT_loclists_base value for the CU. */ | |
19005 | static ULONGEST | |
19006 | lookup_loclist_base (struct dwarf2_cu *cu) | |
19007 | { | |
19008 | /* For the .dwo unit, the loclist_base points to the first offset following | |
19009 | the header. The header consists of the following entities- | |
19010 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
19011 | bit format) | |
19012 | 2. version (2 bytes) | |
19013 | 3. address size (1 byte) | |
19014 | 4. segment selector size (1 byte) | |
19015 | 5. offset entry count (4 bytes) | |
19016 | These sizes are derived as per the DWARFv5 standard. */ | |
19017 | if (cu->dwo_unit != nullptr) | |
19018 | { | |
19019 | if (cu->header.initial_length_size == 4) | |
19020 | return LOCLIST_HEADER_SIZE32; | |
19021 | return LOCLIST_HEADER_SIZE64; | |
19022 | } | |
19023 | return cu->loclist_base; | |
19024 | } | |
19025 | ||
19026 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
19027 | array of offsets in the .debug_loclists section. */ | |
19028 | static CORE_ADDR | |
19029 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
19030 | { | |
976ca316 SM |
19031 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19032 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 19033 | bfd *abfd = objfile->obfd; |
19034 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
19035 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
19036 | ||
19037 | section->read (objfile); | |
19038 | if (section->buffer == NULL) | |
19039 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
19040 | "section [in module %s]"), objfile_name (objfile)); | |
19041 | struct loclist_header header; | |
19042 | read_loclist_header (&header, section); | |
19043 | if (loclist_index >= header.offset_entry_count) | |
19044 | complaint (_("DW_FORM_loclistx pointing outside of " | |
19045 | ".debug_loclists offset array [in module %s]"), | |
19046 | objfile_name (objfile)); | |
19047 | if (loclist_base + loclist_index * cu->header.offset_size | |
19048 | >= section->size) | |
19049 | complaint (_("DW_FORM_loclistx pointing outside of " | |
19050 | ".debug_loclists section [in module %s]"), | |
19051 | objfile_name (objfile)); | |
19052 | const gdb_byte *info_ptr | |
19053 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
19054 | ||
19055 | if (cu->header.offset_size == 4) | |
19056 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
19057 | else | |
19058 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
19059 | } | |
19060 | ||
18a8505e AT |
19061 | /* Process the attributes that had to be skipped in the first round. These |
19062 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
19063 | They could not have been processed in the first round, because at the time | |
19064 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
19065 | static void |
19066 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
19067 | struct attribute *attr) | |
18a8505e AT |
19068 | { |
19069 | struct dwarf2_cu *cu = reader->cu; | |
19070 | switch (attr->form) | |
19071 | { | |
19072 | case DW_FORM_addrx: | |
19073 | case DW_FORM_GNU_addr_index: | |
19074 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
19075 | break; | |
41144253 | 19076 | case DW_FORM_loclistx: |
19077 | DW_UNSND (attr) = read_loclist_index (cu, DW_UNSND (attr)); | |
19078 | break; | |
18a8505e AT |
19079 | case DW_FORM_strx: |
19080 | case DW_FORM_strx1: | |
19081 | case DW_FORM_strx2: | |
19082 | case DW_FORM_strx3: | |
19083 | case DW_FORM_strx4: | |
19084 | case DW_FORM_GNU_str_index: | |
19085 | { | |
19086 | unsigned int str_index = DW_UNSND (attr); | |
19087 | if (reader->dwo_file != NULL) | |
19088 | { | |
19089 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
19090 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19091 | } | |
19092 | else | |
19093 | { | |
19094 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
19095 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19096 | } | |
19097 | break; | |
19098 | } | |
19099 | default: | |
19100 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
19101 | } | |
19102 | } | |
19103 | ||
a8329558 | 19104 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19105 | |
d521ce57 | 19106 | static const gdb_byte * |
dee91e82 DE |
19107 | read_attribute_value (const struct die_reader_specs *reader, |
19108 | struct attribute *attr, unsigned form, | |
18a8505e AT |
19109 | LONGEST implicit_const, const gdb_byte *info_ptr, |
19110 | bool *need_reprocess) | |
c906108c | 19111 | { |
dee91e82 | 19112 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
19113 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19114 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 19115 | bfd *abfd = reader->abfd; |
e7c27a73 | 19116 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19117 | unsigned int bytes_read; |
19118 | struct dwarf_block *blk; | |
18a8505e | 19119 | *need_reprocess = false; |
c906108c | 19120 | |
aead7601 | 19121 | attr->form = (enum dwarf_form) form; |
a8329558 | 19122 | switch (form) |
c906108c | 19123 | { |
c906108c | 19124 | case DW_FORM_ref_addr: |
ae411497 | 19125 | if (cu->header.version == 2) |
c8a7a66f TT |
19126 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
19127 | &bytes_read); | |
ae411497 | 19128 | else |
8266302d TT |
19129 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
19130 | &bytes_read); | |
ae411497 TT |
19131 | info_ptr += bytes_read; |
19132 | break; | |
36586728 | 19133 | case DW_FORM_GNU_ref_alt: |
8266302d | 19134 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
19135 | info_ptr += bytes_read; |
19136 | break; | |
ae411497 | 19137 | case DW_FORM_addr: |
08feed99 TT |
19138 | { |
19139 | struct gdbarch *gdbarch = objfile->arch (); | |
19140 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); | |
19141 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); | |
19142 | info_ptr += bytes_read; | |
19143 | } | |
c906108c SS |
19144 | break; |
19145 | case DW_FORM_block2: | |
7b5a2f43 | 19146 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19147 | blk->size = read_2_bytes (abfd, info_ptr); |
19148 | info_ptr += 2; | |
19149 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19150 | info_ptr += blk->size; | |
19151 | DW_BLOCK (attr) = blk; | |
19152 | break; | |
19153 | case DW_FORM_block4: | |
7b5a2f43 | 19154 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19155 | blk->size = read_4_bytes (abfd, info_ptr); |
19156 | info_ptr += 4; | |
19157 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19158 | info_ptr += blk->size; | |
19159 | DW_BLOCK (attr) = blk; | |
19160 | break; | |
19161 | case DW_FORM_data2: | |
19162 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19163 | info_ptr += 2; | |
19164 | break; | |
19165 | case DW_FORM_data4: | |
19166 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19167 | info_ptr += 4; | |
19168 | break; | |
19169 | case DW_FORM_data8: | |
19170 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19171 | info_ptr += 8; | |
19172 | break; | |
0224619f JK |
19173 | case DW_FORM_data16: |
19174 | blk = dwarf_alloc_block (cu); | |
19175 | blk->size = 16; | |
19176 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19177 | info_ptr += 16; | |
19178 | DW_BLOCK (attr) = blk; | |
19179 | break; | |
2dc7f7b3 | 19180 | case DW_FORM_sec_offset: |
8266302d | 19181 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
19182 | info_ptr += bytes_read; |
19183 | break; | |
41144253 | 19184 | case DW_FORM_loclistx: |
19185 | { | |
19186 | *need_reprocess = true; | |
19187 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19188 | info_ptr += bytes_read; | |
19189 | } | |
19190 | break; | |
c906108c | 19191 | case DW_FORM_string: |
9b1c24c8 | 19192 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19193 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19194 | info_ptr += bytes_read; |
19195 | break; | |
4bdf3d34 | 19196 | case DW_FORM_strp: |
36586728 TT |
19197 | if (!cu->per_cu->is_dwz) |
19198 | { | |
976ca316 | 19199 | DW_STRING (attr) = read_indirect_string (per_objfile, |
ed2dc618 | 19200 | abfd, info_ptr, cu_header, |
36586728 TT |
19201 | &bytes_read); |
19202 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19203 | info_ptr += bytes_read; | |
19204 | break; | |
19205 | } | |
19206 | /* FALLTHROUGH */ | |
43988095 JK |
19207 | case DW_FORM_line_strp: |
19208 | if (!cu->per_cu->is_dwz) | |
19209 | { | |
976ca316 SM |
19210 | DW_STRING (attr) = per_objfile->read_line_string (info_ptr, cu_header, |
19211 | &bytes_read); | |
43988095 JK |
19212 | DW_STRING_IS_CANONICAL (attr) = 0; |
19213 | info_ptr += bytes_read; | |
19214 | break; | |
19215 | } | |
19216 | /* FALLTHROUGH */ | |
36586728 TT |
19217 | case DW_FORM_GNU_strp_alt: |
19218 | { | |
976ca316 | 19219 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
8266302d TT |
19220 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
19221 | &bytes_read); | |
36586728 | 19222 | |
0314b390 | 19223 | DW_STRING (attr) = dwz->read_string (objfile, str_offset); |
36586728 TT |
19224 | DW_STRING_IS_CANONICAL (attr) = 0; |
19225 | info_ptr += bytes_read; | |
19226 | } | |
4bdf3d34 | 19227 | break; |
2dc7f7b3 | 19228 | case DW_FORM_exprloc: |
c906108c | 19229 | case DW_FORM_block: |
7b5a2f43 | 19230 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19231 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19232 | info_ptr += bytes_read; | |
19233 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19234 | info_ptr += blk->size; | |
19235 | DW_BLOCK (attr) = blk; | |
19236 | break; | |
19237 | case DW_FORM_block1: | |
7b5a2f43 | 19238 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19239 | blk->size = read_1_byte (abfd, info_ptr); |
19240 | info_ptr += 1; | |
19241 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19242 | info_ptr += blk->size; | |
19243 | DW_BLOCK (attr) = blk; | |
19244 | break; | |
19245 | case DW_FORM_data1: | |
19246 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19247 | info_ptr += 1; | |
19248 | break; | |
19249 | case DW_FORM_flag: | |
19250 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19251 | info_ptr += 1; | |
19252 | break; | |
2dc7f7b3 TT |
19253 | case DW_FORM_flag_present: |
19254 | DW_UNSND (attr) = 1; | |
19255 | break; | |
c906108c SS |
19256 | case DW_FORM_sdata: |
19257 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19258 | info_ptr += bytes_read; | |
19259 | break; | |
19260 | case DW_FORM_udata: | |
18a8505e | 19261 | case DW_FORM_rnglistx: |
c906108c SS |
19262 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19263 | info_ptr += bytes_read; | |
19264 | break; | |
19265 | case DW_FORM_ref1: | |
9c541725 | 19266 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19267 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19268 | info_ptr += 1; |
19269 | break; | |
19270 | case DW_FORM_ref2: | |
9c541725 | 19271 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19272 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19273 | info_ptr += 2; |
19274 | break; | |
19275 | case DW_FORM_ref4: | |
9c541725 | 19276 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19277 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19278 | info_ptr += 4; |
19279 | break; | |
613e1657 | 19280 | case DW_FORM_ref8: |
9c541725 | 19281 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19282 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19283 | info_ptr += 8; |
19284 | break; | |
55f1336d | 19285 | case DW_FORM_ref_sig8: |
ac9ec31b | 19286 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19287 | info_ptr += 8; |
19288 | break; | |
c906108c | 19289 | case DW_FORM_ref_udata: |
9c541725 | 19290 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19291 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19292 | info_ptr += bytes_read; |
19293 | break; | |
c906108c | 19294 | case DW_FORM_indirect: |
a8329558 KW |
19295 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19296 | info_ptr += bytes_read; | |
43988095 JK |
19297 | if (form == DW_FORM_implicit_const) |
19298 | { | |
19299 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19300 | info_ptr += bytes_read; | |
19301 | } | |
19302 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19303 | info_ptr, need_reprocess); |
43988095 JK |
19304 | break; |
19305 | case DW_FORM_implicit_const: | |
19306 | DW_SND (attr) = implicit_const; | |
a8329558 | 19307 | break; |
336d760d | 19308 | case DW_FORM_addrx: |
3019eac3 | 19309 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19310 | *need_reprocess = true; |
19311 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19312 | info_ptr += bytes_read; |
19313 | break; | |
cf532bd1 | 19314 | case DW_FORM_strx: |
15f18d14 AT |
19315 | case DW_FORM_strx1: |
19316 | case DW_FORM_strx2: | |
19317 | case DW_FORM_strx3: | |
19318 | case DW_FORM_strx4: | |
3019eac3 | 19319 | case DW_FORM_GNU_str_index: |
3019eac3 | 19320 | { |
15f18d14 AT |
19321 | ULONGEST str_index; |
19322 | if (form == DW_FORM_strx1) | |
19323 | { | |
19324 | str_index = read_1_byte (abfd, info_ptr); | |
19325 | info_ptr += 1; | |
19326 | } | |
19327 | else if (form == DW_FORM_strx2) | |
19328 | { | |
19329 | str_index = read_2_bytes (abfd, info_ptr); | |
19330 | info_ptr += 2; | |
19331 | } | |
19332 | else if (form == DW_FORM_strx3) | |
19333 | { | |
19334 | str_index = read_3_bytes (abfd, info_ptr); | |
19335 | info_ptr += 3; | |
19336 | } | |
19337 | else if (form == DW_FORM_strx4) | |
19338 | { | |
19339 | str_index = read_4_bytes (abfd, info_ptr); | |
19340 | info_ptr += 4; | |
19341 | } | |
19342 | else | |
19343 | { | |
19344 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19345 | info_ptr += bytes_read; | |
19346 | } | |
18a8505e AT |
19347 | *need_reprocess = true; |
19348 | DW_UNSND (attr) = str_index; | |
19349 | } | |
3019eac3 | 19350 | break; |
c906108c | 19351 | default: |
8a3fe4f8 | 19352 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19353 | dwarf_form_name (form), |
19354 | bfd_get_filename (abfd)); | |
c906108c | 19355 | } |
28e94949 | 19356 | |
36586728 | 19357 | /* Super hack. */ |
cd6c91b4 | 19358 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
19359 | attr->form = DW_FORM_GNU_ref_alt; |
19360 | ||
28e94949 JB |
19361 | /* We have seen instances where the compiler tried to emit a byte |
19362 | size attribute of -1 which ended up being encoded as an unsigned | |
19363 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19364 | an object of this size seems pretty unlikely so we can relatively | |
19365 | safely treat these cases as if the size attribute was invalid and | |
19366 | treat them as zero by default. */ | |
19367 | if (attr->name == DW_AT_byte_size | |
19368 | && form == DW_FORM_data4 | |
19369 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19370 | { |
19371 | complaint | |
b98664d3 | 19372 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19373 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19374 | DW_UNSND (attr) = 0; |
19375 | } | |
28e94949 | 19376 | |
c906108c SS |
19377 | return info_ptr; |
19378 | } | |
19379 | ||
a8329558 KW |
19380 | /* Read an attribute described by an abbreviated attribute. */ |
19381 | ||
d521ce57 | 19382 | static const gdb_byte * |
dee91e82 DE |
19383 | read_attribute (const struct die_reader_specs *reader, |
19384 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19385 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19386 | { |
19387 | attr->name = abbrev->name; | |
43988095 | 19388 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19389 | abbrev->implicit_const, info_ptr, |
19390 | need_reprocess); | |
a8329558 KW |
19391 | } |
19392 | ||
43988095 JK |
19393 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
19394 | ||
19395 | static const char * | |
976ca316 | 19396 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 19397 | LONGEST str_offset) |
43988095 | 19398 | { |
976ca316 SM |
19399 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
19400 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
19401 | } |
19402 | ||
43988095 JK |
19403 | /* Return pointer to string at .debug_str offset as read from BUF. |
19404 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19405 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19406 | ||
d521ce57 | 19407 | static const char * |
976ca316 | 19408 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 19409 | const gdb_byte *buf, |
cf2c3c16 TT |
19410 | const struct comp_unit_head *cu_header, |
19411 | unsigned int *bytes_read_ptr) | |
19412 | { | |
8266302d | 19413 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 19414 | |
976ca316 | 19415 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
19416 | } |
19417 | ||
86c0bb4c | 19418 | /* See read.h. */ |
43988095 | 19419 | |
86c0bb4c TT |
19420 | const char * |
19421 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
19422 | const struct comp_unit_head *cu_header, |
19423 | unsigned int *bytes_read_ptr) | |
43988095 | 19424 | { |
86c0bb4c | 19425 | bfd *abfd = objfile->obfd; |
8266302d | 19426 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 19427 | |
5989a64e | 19428 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
19429 | } |
19430 | ||
3019eac3 | 19431 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 19432 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
19433 | ADDR_SIZE is the size of addresses from the CU header. */ |
19434 | ||
19435 | static CORE_ADDR | |
976ca316 SM |
19436 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
19437 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 19438 | { |
976ca316 | 19439 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
19440 | bfd *abfd = objfile->obfd; |
19441 | const gdb_byte *info_ptr; | |
18a8505e | 19442 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 19443 | |
976ca316 SM |
19444 | per_objfile->per_bfd->addr.read (objfile); |
19445 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 19446 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 19447 | objfile_name (objfile)); |
18a8505e | 19448 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 19449 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
19450 | error (_("DW_FORM_addr_index pointing outside of " |
19451 | ".debug_addr section [in module %s]"), | |
4262abfb | 19452 | objfile_name (objfile)); |
976ca316 SM |
19453 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
19454 | + addr_index * addr_size); | |
3019eac3 DE |
19455 | if (addr_size == 4) |
19456 | return bfd_get_32 (abfd, info_ptr); | |
19457 | else | |
19458 | return bfd_get_64 (abfd, info_ptr); | |
19459 | } | |
19460 | ||
19461 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19462 | ||
19463 | static CORE_ADDR | |
19464 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19465 | { | |
5e22e966 | 19466 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 19467 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
19468 | } |
19469 | ||
19470 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19471 | ||
19472 | static CORE_ADDR | |
d521ce57 | 19473 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19474 | unsigned int *bytes_read) |
19475 | { | |
5e22e966 | 19476 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
19477 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19478 | ||
19479 | return read_addr_index (cu, addr_index); | |
19480 | } | |
19481 | ||
450a1bfc | 19482 | /* See read.h. */ |
3019eac3 DE |
19483 | |
19484 | CORE_ADDR | |
82ca3f51 | 19485 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 19486 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 19487 | unsigned int addr_index) |
3019eac3 | 19488 | { |
976ca316 | 19489 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 19490 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
19491 | int addr_size; |
19492 | ||
3019eac3 DE |
19493 | /* We need addr_base and addr_size. |
19494 | If we don't have PER_CU->cu, we have to get it. | |
19495 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19496 | which at this point doesn't seem justified: it's not clear how frequently | |
19497 | it would get used and it would increase the size of every PER_CU. | |
19498 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19499 | so we're not in uncharted territory here. | |
19500 | Alas we need to be a bit more complicated as addr_base is contained | |
19501 | in the DIE. | |
19502 | ||
19503 | We don't need to read the entire CU(/TU). | |
19504 | We just need the header and top level die. | |
a1b64ce1 | 19505 | |
3019eac3 | 19506 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19507 | For now we skip this optimization. */ |
3019eac3 DE |
19508 | |
19509 | if (cu != NULL) | |
19510 | { | |
19511 | addr_base = cu->addr_base; | |
19512 | addr_size = cu->header.addr_size; | |
19513 | } | |
19514 | else | |
19515 | { | |
976ca316 | 19516 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
19517 | addr_base = reader.cu->addr_base; |
19518 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
19519 | } |
19520 | ||
976ca316 | 19521 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
19522 | } |
19523 | ||
18a8505e AT |
19524 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
19525 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
19526 | DWO file. */ | |
3019eac3 | 19527 | |
d521ce57 | 19528 | static const char * |
18a8505e AT |
19529 | read_str_index (struct dwarf2_cu *cu, |
19530 | struct dwarf2_section_info *str_section, | |
19531 | struct dwarf2_section_info *str_offsets_section, | |
19532 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 19533 | { |
976ca316 SM |
19534 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19535 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 19536 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19537 | bfd *abfd = objfile->obfd; |
d521ce57 | 19538 | const gdb_byte *info_ptr; |
3019eac3 | 19539 | ULONGEST str_offset; |
cf532bd1 | 19540 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 19541 | |
96b79293 TT |
19542 | str_section->read (objfile); |
19543 | str_offsets_section->read (objfile); | |
73869dc2 | 19544 | if (str_section->buffer == NULL) |
18a8505e | 19545 | error (_("%s used without %s section" |
9d8780f0 | 19546 | " in CU at offset %s [in module %s]"), |
96b79293 | 19547 | form_name, str_section->get_name (), |
18a8505e | 19548 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19549 | if (str_offsets_section->buffer == NULL) |
18a8505e | 19550 | error (_("%s used without %s section" |
9d8780f0 | 19551 | " in CU at offset %s [in module %s]"), |
96b79293 | 19552 | form_name, str_section->get_name (), |
18a8505e | 19553 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19554 | info_ptr = (str_offsets_section->buffer |
18a8505e | 19555 | + str_offsets_base |
3019eac3 DE |
19556 | + str_index * cu->header.offset_size); |
19557 | if (cu->header.offset_size == 4) | |
19558 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19559 | else | |
19560 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19561 | if (str_offset >= str_section->size) |
57d63ce2 | 19562 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19563 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19564 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19565 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19566 | } |
19567 | ||
18a8505e AT |
19568 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
19569 | ||
19570 | static const char * | |
19571 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
19572 | { | |
19573 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
19574 | ? reader->cu->header.addr_size : 0; | |
19575 | return read_str_index (reader->cu, | |
19576 | &reader->dwo_file->sections.str, | |
19577 | &reader->dwo_file->sections.str_offsets, | |
19578 | str_offsets_base, str_index); | |
19579 | } | |
19580 | ||
19581 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
19582 | ||
19583 | static const char * | |
19584 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
19585 | { | |
5e22e966 | 19586 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
19587 | const char *objf_name = objfile_name (objfile); |
19588 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
19589 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
19590 | ||
19591 | if (!cu->str_offsets_base.has_value ()) | |
19592 | error (_("%s used in Fission stub without %s" | |
19593 | " in CU at offset 0x%lx [in module %s]"), | |
19594 | form_name, str_offsets_attr_name, | |
19595 | (long) cu->header.offset_size, objf_name); | |
19596 | ||
19597 | return read_str_index (cu, | |
5e22e966 SM |
19598 | &cu->per_objfile->per_bfd->str, |
19599 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
19600 | *cu->str_offsets_base, str_index); |
19601 | } | |
19602 | ||
3019eac3 DE |
19603 | /* Return the length of an LEB128 number in BUF. */ |
19604 | ||
19605 | static int | |
19606 | leb128_size (const gdb_byte *buf) | |
19607 | { | |
19608 | const gdb_byte *begin = buf; | |
19609 | gdb_byte byte; | |
19610 | ||
19611 | while (1) | |
19612 | { | |
19613 | byte = *buf++; | |
19614 | if ((byte & 128) == 0) | |
19615 | return buf - begin; | |
19616 | } | |
19617 | } | |
19618 | ||
c906108c | 19619 | static void |
e142c38c | 19620 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19621 | { |
19622 | switch (lang) | |
19623 | { | |
19624 | case DW_LANG_C89: | |
76bee0cc | 19625 | case DW_LANG_C99: |
0cfd832f | 19626 | case DW_LANG_C11: |
c906108c | 19627 | case DW_LANG_C: |
d1be3247 | 19628 | case DW_LANG_UPC: |
e142c38c | 19629 | cu->language = language_c; |
c906108c | 19630 | break; |
9c37b5ae | 19631 | case DW_LANG_Java: |
c906108c | 19632 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19633 | case DW_LANG_C_plus_plus_11: |
19634 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19635 | cu->language = language_cplus; |
c906108c | 19636 | break; |
6aecb9c2 JB |
19637 | case DW_LANG_D: |
19638 | cu->language = language_d; | |
19639 | break; | |
c906108c SS |
19640 | case DW_LANG_Fortran77: |
19641 | case DW_LANG_Fortran90: | |
b21b22e0 | 19642 | case DW_LANG_Fortran95: |
f7de9aab MW |
19643 | case DW_LANG_Fortran03: |
19644 | case DW_LANG_Fortran08: | |
e142c38c | 19645 | cu->language = language_fortran; |
c906108c | 19646 | break; |
a766d390 DE |
19647 | case DW_LANG_Go: |
19648 | cu->language = language_go; | |
19649 | break; | |
c906108c | 19650 | case DW_LANG_Mips_Assembler: |
e142c38c | 19651 | cu->language = language_asm; |
c906108c SS |
19652 | break; |
19653 | case DW_LANG_Ada83: | |
8aaf0b47 | 19654 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19655 | cu->language = language_ada; |
19656 | break; | |
72019c9c GM |
19657 | case DW_LANG_Modula2: |
19658 | cu->language = language_m2; | |
19659 | break; | |
fe8e67fd PM |
19660 | case DW_LANG_Pascal83: |
19661 | cu->language = language_pascal; | |
19662 | break; | |
22566fbd DJ |
19663 | case DW_LANG_ObjC: |
19664 | cu->language = language_objc; | |
19665 | break; | |
c44af4eb TT |
19666 | case DW_LANG_Rust: |
19667 | case DW_LANG_Rust_old: | |
19668 | cu->language = language_rust; | |
19669 | break; | |
c906108c SS |
19670 | case DW_LANG_Cobol74: |
19671 | case DW_LANG_Cobol85: | |
c906108c | 19672 | default: |
e142c38c | 19673 | cu->language = language_minimal; |
c906108c SS |
19674 | break; |
19675 | } | |
e142c38c | 19676 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19677 | } |
19678 | ||
19679 | /* Return the named attribute or NULL if not there. */ | |
19680 | ||
19681 | static struct attribute * | |
e142c38c | 19682 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19683 | { |
a48e046c | 19684 | for (;;) |
c906108c | 19685 | { |
a48e046c TT |
19686 | unsigned int i; |
19687 | struct attribute *spec = NULL; | |
19688 | ||
19689 | for (i = 0; i < die->num_attrs; ++i) | |
19690 | { | |
19691 | if (die->attrs[i].name == name) | |
19692 | return &die->attrs[i]; | |
19693 | if (die->attrs[i].name == DW_AT_specification | |
19694 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19695 | spec = &die->attrs[i]; | |
19696 | } | |
19697 | ||
19698 | if (!spec) | |
19699 | break; | |
c906108c | 19700 | |
f2f0e013 | 19701 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19702 | } |
c5aa993b | 19703 | |
c906108c SS |
19704 | return NULL; |
19705 | } | |
19706 | ||
7d45c7c3 KB |
19707 | /* Return the string associated with a string-typed attribute, or NULL if it |
19708 | is either not found or is of an incorrect type. */ | |
19709 | ||
19710 | static const char * | |
19711 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19712 | { | |
19713 | struct attribute *attr; | |
19714 | const char *str = NULL; | |
19715 | ||
19716 | attr = dwarf2_attr (die, name, cu); | |
19717 | ||
19718 | if (attr != NULL) | |
19719 | { | |
e61108c9 TT |
19720 | str = attr->value_as_string (); |
19721 | if (str == nullptr) | |
b98664d3 | 19722 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19723 | "DIE at %s in module %s"), |
19724 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 19725 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
19726 | } |
19727 | ||
19728 | return str; | |
19729 | } | |
19730 | ||
a084a2a6 | 19731 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19732 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19733 | static const char * |
19734 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19735 | { | |
19736 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19737 | if (dwo_name == nullptr) | |
19738 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19739 | return dwo_name; | |
19740 | } | |
19741 | ||
05cf31d1 JB |
19742 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19743 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19744 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19745 | |
19746 | static int | |
19747 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19748 | { | |
19749 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19750 | ||
19751 | return (attr && DW_UNSND (attr)); | |
19752 | } | |
19753 | ||
3ca72b44 | 19754 | static int |
e142c38c | 19755 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19756 | { |
05cf31d1 JB |
19757 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19758 | which value is non-zero. However, we have to be careful with | |
19759 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19760 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19761 | end up accidently finding a declaration attribute that belongs | |
19762 | to a different DIE referenced by the specification attribute, | |
19763 | even though the given DIE does not have a declaration attribute. */ | |
19764 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19765 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19766 | } |
19767 | ||
63d06c5c | 19768 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19769 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19770 | containing the return value on output. If there is no |
19771 | specification, but there is an abstract origin, that is | |
19772 | returned. */ | |
63d06c5c DC |
19773 | |
19774 | static struct die_info * | |
f2f0e013 | 19775 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19776 | { |
f2f0e013 DJ |
19777 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19778 | *spec_cu); | |
63d06c5c | 19779 | |
edb3359d DJ |
19780 | if (spec_attr == NULL) |
19781 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19782 | ||
63d06c5c DC |
19783 | if (spec_attr == NULL) |
19784 | return NULL; | |
19785 | else | |
f2f0e013 | 19786 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19787 | } |
c906108c | 19788 | |
527f3840 JK |
19789 | /* Stub for free_line_header to match void * callback types. */ |
19790 | ||
19791 | static void | |
19792 | free_line_header_voidp (void *arg) | |
19793 | { | |
9a3c8263 | 19794 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19795 | |
fff8551c | 19796 | delete lh; |
527f3840 JK |
19797 | } |
19798 | ||
83769d0b | 19799 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19800 | |
19801 | static struct dwarf2_section_info * | |
19802 | get_debug_line_section (struct dwarf2_cu *cu) | |
19803 | { | |
19804 | struct dwarf2_section_info *section; | |
976ca316 | 19805 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
19806 | |
19807 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19808 | DWO file. */ | |
19809 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19810 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19811 | else if (cu->per_cu->is_dwz) | |
19812 | { | |
976ca316 | 19813 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
36586728 TT |
19814 | |
19815 | section = &dwz->line; | |
19816 | } | |
19817 | else | |
976ca316 | 19818 | section = &per_objfile->per_bfd->line; |
36586728 TT |
19819 | |
19820 | return section; | |
19821 | } | |
19822 | ||
debd256d | 19823 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 19824 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 19825 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
19826 | Returns NULL if there is a problem reading the header, e.g., if it |
19827 | has a version we don't understand. | |
debd256d JB |
19828 | |
19829 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
19830 | the returned object point into the dwarf line section buffer, |
19831 | and must not be freed. */ | |
ae2de4f8 | 19832 | |
fff8551c | 19833 | static line_header_up |
9c541725 | 19834 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 19835 | { |
3019eac3 | 19836 | struct dwarf2_section_info *section; |
976ca316 | 19837 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 19838 | |
36586728 | 19839 | section = get_debug_line_section (cu); |
976ca316 | 19840 | section->read (per_objfile->objfile); |
3019eac3 | 19841 | if (section->buffer == NULL) |
debd256d | 19842 | { |
3019eac3 | 19843 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 19844 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 19845 | else |
b98664d3 | 19846 | complaint (_("missing .debug_line section")); |
debd256d JB |
19847 | return 0; |
19848 | } | |
19849 | ||
0df7ad3a | 19850 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 19851 | per_objfile, section, &cu->header); |
debd256d | 19852 | } |
c906108c | 19853 | |
c6da4cef | 19854 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 19855 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 19856 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
19857 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
19858 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 19859 | |
d521ce57 | 19860 | static const char * |
7ba99d21 | 19861 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 19862 | const dwarf2_psymtab *pst, |
c89b44cd TT |
19863 | const char *comp_dir, |
19864 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 19865 | { |
d521ce57 TT |
19866 | const char *include_name = fe.name; |
19867 | const char *include_name_to_compare = include_name; | |
72b9f47f | 19868 | const char *pst_filename; |
c6da4cef DE |
19869 | int file_is_pst; |
19870 | ||
8c43009f | 19871 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 19872 | |
c89b44cd | 19873 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
19874 | if (!IS_ABSOLUTE_PATH (include_name) |
19875 | && (dir_name != NULL || comp_dir != NULL)) | |
19876 | { | |
19877 | /* Avoid creating a duplicate psymtab for PST. | |
19878 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
19879 | Before we do the comparison, however, we need to account | |
19880 | for DIR_NAME and COMP_DIR. | |
19881 | First prepend dir_name (if non-NULL). If we still don't | |
19882 | have an absolute path prepend comp_dir (if non-NULL). | |
19883 | However, the directory we record in the include-file's | |
19884 | psymtab does not contain COMP_DIR (to match the | |
19885 | corresponding symtab(s)). | |
19886 | ||
19887 | Example: | |
19888 | ||
19889 | bash$ cd /tmp | |
19890 | bash$ gcc -g ./hello.c | |
19891 | include_name = "hello.c" | |
19892 | dir_name = "." | |
19893 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
19894 | DW_AT_name = "./hello.c" |
19895 | ||
19896 | */ | |
c6da4cef DE |
19897 | |
19898 | if (dir_name != NULL) | |
19899 | { | |
c89b44cd TT |
19900 | name_holder->reset (concat (dir_name, SLASH_STRING, |
19901 | include_name, (char *) NULL)); | |
19902 | include_name = name_holder->get (); | |
c6da4cef | 19903 | include_name_to_compare = include_name; |
c6da4cef DE |
19904 | } |
19905 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
19906 | { | |
c89b44cd TT |
19907 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
19908 | include_name, (char *) NULL)); | |
19909 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
19910 | } |
19911 | } | |
19912 | ||
19913 | pst_filename = pst->filename; | |
c89b44cd | 19914 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
19915 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
19916 | { | |
c89b44cd TT |
19917 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
19918 | pst_filename, (char *) NULL)); | |
19919 | pst_filename = copied_name.get (); | |
c6da4cef DE |
19920 | } |
19921 | ||
1e3fad37 | 19922 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 19923 | |
c6da4cef DE |
19924 | if (file_is_pst) |
19925 | return NULL; | |
19926 | return include_name; | |
19927 | } | |
19928 | ||
d9b3de22 DE |
19929 | /* State machine to track the state of the line number program. */ |
19930 | ||
6f77053d | 19931 | class lnp_state_machine |
d9b3de22 | 19932 | { |
6f77053d PA |
19933 | public: |
19934 | /* Initialize a machine state for the start of a line number | |
19935 | program. */ | |
804d2729 TT |
19936 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
19937 | bool record_lines_p); | |
6f77053d | 19938 | |
8c43009f PA |
19939 | file_entry *current_file () |
19940 | { | |
19941 | /* lh->file_names is 0-based, but the file name numbers in the | |
19942 | statement program are 1-based. */ | |
6f77053d PA |
19943 | return m_line_header->file_name_at (m_file); |
19944 | } | |
19945 | ||
19946 | /* Record the line in the state machine. END_SEQUENCE is true if | |
19947 | we're processing the end of a sequence. */ | |
19948 | void record_line (bool end_sequence); | |
19949 | ||
7ab6656f OJ |
19950 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
19951 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
19952 | void check_line_address (struct dwarf2_cu *cu, |
19953 | const gdb_byte *line_ptr, | |
7ab6656f | 19954 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
19955 | |
19956 | void handle_set_discriminator (unsigned int discriminator) | |
19957 | { | |
19958 | m_discriminator = discriminator; | |
19959 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
19960 | } | |
19961 | ||
19962 | /* Handle DW_LNE_set_address. */ | |
19963 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
19964 | { | |
19965 | m_op_index = 0; | |
19966 | address += baseaddr; | |
19967 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
19968 | } | |
19969 | ||
19970 | /* Handle DW_LNS_advance_pc. */ | |
19971 | void handle_advance_pc (CORE_ADDR adjust); | |
19972 | ||
19973 | /* Handle a special opcode. */ | |
19974 | void handle_special_opcode (unsigned char op_code); | |
19975 | ||
19976 | /* Handle DW_LNS_advance_line. */ | |
19977 | void handle_advance_line (int line_delta) | |
19978 | { | |
19979 | advance_line (line_delta); | |
19980 | } | |
19981 | ||
19982 | /* Handle DW_LNS_set_file. */ | |
19983 | void handle_set_file (file_name_index file); | |
19984 | ||
19985 | /* Handle DW_LNS_negate_stmt. */ | |
19986 | void handle_negate_stmt () | |
19987 | { | |
19988 | m_is_stmt = !m_is_stmt; | |
19989 | } | |
19990 | ||
19991 | /* Handle DW_LNS_const_add_pc. */ | |
19992 | void handle_const_add_pc (); | |
19993 | ||
19994 | /* Handle DW_LNS_fixed_advance_pc. */ | |
19995 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
19996 | { | |
19997 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19998 | m_op_index = 0; | |
19999 | } | |
20000 | ||
20001 | /* Handle DW_LNS_copy. */ | |
20002 | void handle_copy () | |
20003 | { | |
20004 | record_line (false); | |
20005 | m_discriminator = 0; | |
20006 | } | |
20007 | ||
20008 | /* Handle DW_LNE_end_sequence. */ | |
20009 | void handle_end_sequence () | |
20010 | { | |
804d2729 | 20011 | m_currently_recording_lines = true; |
6f77053d PA |
20012 | } |
20013 | ||
20014 | private: | |
20015 | /* Advance the line by LINE_DELTA. */ | |
20016 | void advance_line (int line_delta) | |
20017 | { | |
20018 | m_line += line_delta; | |
20019 | ||
20020 | if (line_delta != 0) | |
20021 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20022 | } |
20023 | ||
804d2729 TT |
20024 | struct dwarf2_cu *m_cu; |
20025 | ||
6f77053d PA |
20026 | gdbarch *m_gdbarch; |
20027 | ||
20028 | /* True if we're recording lines. | |
20029 | Otherwise we're building partial symtabs and are just interested in | |
20030 | finding include files mentioned by the line number program. */ | |
20031 | bool m_record_lines_p; | |
20032 | ||
8c43009f | 20033 | /* The line number header. */ |
6f77053d | 20034 | line_header *m_line_header; |
8c43009f | 20035 | |
6f77053d PA |
20036 | /* These are part of the standard DWARF line number state machine, |
20037 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20038 | |
6f77053d | 20039 | unsigned char m_op_index = 0; |
7ba99d21 AT |
20040 | /* The line table index of the current file. */ |
20041 | file_name_index m_file = 1; | |
6f77053d PA |
20042 | unsigned int m_line = 1; |
20043 | ||
20044 | /* These are initialized in the constructor. */ | |
20045 | ||
20046 | CORE_ADDR m_address; | |
20047 | bool m_is_stmt; | |
20048 | unsigned int m_discriminator; | |
d9b3de22 DE |
20049 | |
20050 | /* Additional bits of state we need to track. */ | |
20051 | ||
20052 | /* The last file that we called dwarf2_start_subfile for. | |
20053 | This is only used for TLLs. */ | |
6f77053d | 20054 | unsigned int m_last_file = 0; |
d9b3de22 | 20055 | /* The last file a line number was recorded for. */ |
6f77053d | 20056 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20057 | |
1313c56e AB |
20058 | /* The address of the last line entry. */ |
20059 | CORE_ADDR m_last_address; | |
20060 | ||
20061 | /* Set to true when a previous line at the same address (using | |
20062 | m_last_address) had m_is_stmt true. This is reset to false when a | |
20063 | line entry at a new address (m_address different to m_last_address) is | |
20064 | processed. */ | |
20065 | bool m_stmt_at_address = false; | |
20066 | ||
804d2729 TT |
20067 | /* When true, record the lines we decode. */ |
20068 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20069 | |
20070 | /* The last line number that was recorded, used to coalesce | |
20071 | consecutive entries for the same line. This can happen, for | |
20072 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20073 | unsigned int m_last_line = 0; |
20074 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20075 | }; |
d9b3de22 | 20076 | |
6f77053d PA |
20077 | void |
20078 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20079 | { | |
20080 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20081 | / m_line_header->maximum_ops_per_instruction) | |
20082 | * m_line_header->minimum_instruction_length); | |
20083 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20084 | m_op_index = ((m_op_index + adjust) | |
20085 | % m_line_header->maximum_ops_per_instruction); | |
20086 | } | |
d9b3de22 | 20087 | |
6f77053d PA |
20088 | void |
20089 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20090 | { |
6f77053d | 20091 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
20092 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
20093 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
20094 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
20095 | / m_line_header->maximum_ops_per_instruction) |
20096 | * m_line_header->minimum_instruction_length); | |
20097 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 20098 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 20099 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 20100 | |
258bf0ee | 20101 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
20102 | advance_line (line_delta); |
20103 | record_line (false); | |
20104 | m_discriminator = 0; | |
20105 | } | |
d9b3de22 | 20106 | |
6f77053d PA |
20107 | void |
20108 | lnp_state_machine::handle_set_file (file_name_index file) | |
20109 | { | |
20110 | m_file = file; | |
20111 | ||
20112 | const file_entry *fe = current_file (); | |
20113 | if (fe == NULL) | |
20114 | dwarf2_debug_line_missing_file_complaint (); | |
20115 | else if (m_record_lines_p) | |
20116 | { | |
20117 | const char *dir = fe->include_dir (m_line_header); | |
20118 | ||
c24bdb02 | 20119 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20120 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20121 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20122 | } |
20123 | } | |
20124 | ||
20125 | void | |
20126 | lnp_state_machine::handle_const_add_pc () | |
20127 | { | |
20128 | CORE_ADDR adjust | |
20129 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20130 | ||
20131 | CORE_ADDR addr_adj | |
20132 | = (((m_op_index + adjust) | |
20133 | / m_line_header->maximum_ops_per_instruction) | |
20134 | * m_line_header->minimum_instruction_length); | |
20135 | ||
20136 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20137 | m_op_index = ((m_op_index + adjust) | |
20138 | % m_line_header->maximum_ops_per_instruction); | |
20139 | } | |
d9b3de22 | 20140 | |
a05a36a5 DE |
20141 | /* Return non-zero if we should add LINE to the line number table. |
20142 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20143 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20144 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20145 | had a non-zero discriminator. | |
20146 | ||
20147 | We have to be careful in the presence of discriminators. | |
20148 | E.g., for this line: | |
20149 | ||
20150 | for (i = 0; i < 100000; i++); | |
20151 | ||
20152 | clang can emit four line number entries for that one line, | |
20153 | each with a different discriminator. | |
20154 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20155 | ||
20156 | However, we want gdb to coalesce all four entries into one. | |
20157 | Otherwise the user could stepi into the middle of the line and | |
20158 | gdb would get confused about whether the pc really was in the | |
20159 | middle of the line. | |
20160 | ||
20161 | Things are further complicated by the fact that two consecutive | |
20162 | line number entries for the same line is a heuristic used by gcc | |
20163 | to denote the end of the prologue. So we can't just discard duplicate | |
20164 | entries, we have to be selective about it. The heuristic we use is | |
20165 | that we only collapse consecutive entries for the same line if at least | |
20166 | one of those entries has a non-zero discriminator. PR 17276. | |
20167 | ||
20168 | Note: Addresses in the line number state machine can never go backwards | |
20169 | within one sequence, thus this coalescing is ok. */ | |
20170 | ||
20171 | static int | |
804d2729 TT |
20172 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20173 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20174 | int line_has_non_zero_discriminator, |
20175 | struct subfile *last_subfile) | |
20176 | { | |
c24bdb02 | 20177 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20178 | return 1; |
20179 | if (line != last_line) | |
20180 | return 1; | |
20181 | /* Same line for the same file that we've seen already. | |
20182 | As a last check, for pr 17276, only record the line if the line | |
20183 | has never had a non-zero discriminator. */ | |
20184 | if (!line_has_non_zero_discriminator) | |
20185 | return 1; | |
20186 | return 0; | |
20187 | } | |
20188 | ||
804d2729 TT |
20189 | /* Use the CU's builder to record line number LINE beginning at |
20190 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20191 | |
20192 | static void | |
d9b3de22 | 20193 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 20194 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 20195 | struct dwarf2_cu *cu) |
252a6764 DE |
20196 | { |
20197 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20198 | ||
27e0867f DE |
20199 | if (dwarf_line_debug) |
20200 | { | |
20201 | fprintf_unfiltered (gdb_stdlog, | |
20202 | "Recording line %u, file %s, address %s\n", | |
20203 | line, lbasename (subfile->name), | |
20204 | paddress (gdbarch, address)); | |
20205 | } | |
20206 | ||
804d2729 | 20207 | if (cu != nullptr) |
8c95582d | 20208 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
20209 | } |
20210 | ||
20211 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20212 | Mark the end of a set of line number records. | |
d9b3de22 | 20213 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20214 | If SUBFILE is NULL the request is ignored. */ |
20215 | ||
20216 | static void | |
20217 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20218 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20219 | { |
27e0867f DE |
20220 | if (subfile == NULL) |
20221 | return; | |
20222 | ||
20223 | if (dwarf_line_debug) | |
20224 | { | |
20225 | fprintf_unfiltered (gdb_stdlog, | |
20226 | "Finishing current line, file %s, address %s\n", | |
20227 | lbasename (subfile->name), | |
20228 | paddress (gdbarch, address)); | |
20229 | } | |
20230 | ||
8c95582d | 20231 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
20232 | } |
20233 | ||
6f77053d PA |
20234 | void |
20235 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20236 | { |
d9b3de22 DE |
20237 | if (dwarf_line_debug) |
20238 | { | |
20239 | fprintf_unfiltered (gdb_stdlog, | |
20240 | "Processing actual line %u: file %u," | |
94a72be7 | 20241 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 20242 | m_line, m_file, |
6f77053d | 20243 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
20244 | m_is_stmt, m_discriminator, |
20245 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
20246 | } |
20247 | ||
6f77053d | 20248 | file_entry *fe = current_file (); |
8c43009f PA |
20249 | |
20250 | if (fe == NULL) | |
d9b3de22 DE |
20251 | dwarf2_debug_line_missing_file_complaint (); |
20252 | /* For now we ignore lines not starting on an instruction boundary. | |
20253 | But not when processing end_sequence for compatibility with the | |
20254 | previous version of the code. */ | |
6f77053d | 20255 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20256 | { |
8c43009f | 20257 | fe->included_p = 1; |
8c95582d | 20258 | if (m_record_lines_p) |
d9b3de22 | 20259 | { |
1313c56e AB |
20260 | /* When we switch files we insert an end maker in the first file, |
20261 | switch to the second file and add a new line entry. The | |
20262 | problem is that the end marker inserted in the first file will | |
20263 | discard any previous line entries at the same address. If the | |
20264 | line entries in the first file are marked as is-stmt, while | |
20265 | the new line in the second file is non-stmt, then this means | |
20266 | the end marker will discard is-stmt lines so we can have a | |
20267 | non-stmt line. This means that there are less addresses at | |
20268 | which the user can insert a breakpoint. | |
20269 | ||
20270 | To improve this we track the last address in m_last_address, | |
20271 | and whether we have seen an is-stmt at this address. Then | |
20272 | when switching files, if we have seen a stmt at the current | |
20273 | address, and we are switching to create a non-stmt line, then | |
20274 | discard the new line. */ | |
20275 | bool file_changed | |
20276 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
20277 | bool ignore_this_line | |
20278 | = (file_changed && !end_sequence && m_last_address == m_address | |
20279 | && !m_is_stmt && m_stmt_at_address); | |
20280 | ||
20281 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 20282 | { |
804d2729 TT |
20283 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20284 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20285 | } |
20286 | ||
1313c56e | 20287 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 20288 | { |
8c95582d AB |
20289 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
20290 | ||
804d2729 | 20291 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20292 | m_line_has_non_zero_discriminator, |
20293 | m_last_subfile)) | |
d9b3de22 | 20294 | { |
c24bdb02 | 20295 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 20296 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 20297 | builder->get_current_subfile (), |
8c95582d | 20298 | m_line, m_address, is_stmt, |
804d2729 | 20299 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20300 | } |
c24bdb02 | 20301 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20302 | m_last_line = m_line; |
d9b3de22 DE |
20303 | } |
20304 | } | |
20305 | } | |
1313c56e AB |
20306 | |
20307 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
20308 | have multiple line table entries all at m_address. */ | |
20309 | if (m_last_address != m_address) | |
20310 | { | |
20311 | m_stmt_at_address = false; | |
20312 | m_last_address = m_address; | |
20313 | } | |
20314 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
20315 | } |
20316 | ||
804d2729 TT |
20317 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20318 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20319 | { |
804d2729 | 20320 | m_cu = cu; |
6f77053d PA |
20321 | m_gdbarch = arch; |
20322 | m_record_lines_p = record_lines_p; | |
20323 | m_line_header = lh; | |
d9b3de22 | 20324 | |
804d2729 | 20325 | m_currently_recording_lines = true; |
d9b3de22 | 20326 | |
d9b3de22 DE |
20327 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20328 | was a line entry for it so that the backend has a chance to adjust it | |
20329 | and also record it in case it needs it. This is currently used by MIPS | |
20330 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20331 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20332 | m_is_stmt = lh->default_is_stmt; | |
20333 | m_discriminator = 0; | |
1313c56e AB |
20334 | |
20335 | m_last_address = m_address; | |
20336 | m_stmt_at_address = false; | |
252a6764 DE |
20337 | } |
20338 | ||
6f77053d PA |
20339 | void |
20340 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20341 | const gdb_byte *line_ptr, | |
7ab6656f | 20342 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20343 | { |
7ab6656f OJ |
20344 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20345 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20346 | values of zero to preserve GDB's previous behaviour which is to handle | |
20347 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20348 | |
7ab6656f | 20349 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20350 | { |
20351 | /* This line table is for a function which has been | |
20352 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20353 | ||
5e22e966 | 20354 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
20355 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20356 | ||
b98664d3 | 20357 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20358 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20359 | m_currently_recording_lines = false; |
20360 | /* Note: m_currently_recording_lines is left as false until we see | |
20361 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20362 | } |
20363 | } | |
20364 | ||
f3f5162e | 20365 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20366 | Process the line number information in LH. |
20367 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20368 | program in order to set included_p for every referenced header. */ | |
debd256d | 20369 | |
c906108c | 20370 | static void |
43f3e411 DE |
20371 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20372 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20373 | { |
d521ce57 TT |
20374 | const gdb_byte *line_ptr, *extended_end; |
20375 | const gdb_byte *line_end; | |
a8c50c1f | 20376 | unsigned int bytes_read, extended_len; |
699ca60a | 20377 | unsigned char op_code, extended_op; |
e142c38c | 20378 | CORE_ADDR baseaddr; |
5e22e966 | 20379 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20380 | bfd *abfd = objfile->obfd; |
08feed99 | 20381 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
20382 | /* True if we're recording line info (as opposed to building partial |
20383 | symtabs and just interested in finding include files mentioned by | |
20384 | the line number program). */ | |
20385 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20386 | |
b3b3bada | 20387 | baseaddr = objfile->text_section_offset (); |
c906108c | 20388 | |
debd256d JB |
20389 | line_ptr = lh->statement_program_start; |
20390 | line_end = lh->statement_program_end; | |
c906108c SS |
20391 | |
20392 | /* Read the statement sequences until there's nothing left. */ | |
20393 | while (line_ptr < line_end) | |
20394 | { | |
6f77053d PA |
20395 | /* The DWARF line number program state machine. Reset the state |
20396 | machine at the start of each sequence. */ | |
804d2729 | 20397 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20398 | bool end_sequence = false; |
d9b3de22 | 20399 | |
8c43009f | 20400 | if (record_lines_p) |
c906108c | 20401 | { |
8c43009f PA |
20402 | /* Start a subfile for the current file of the state |
20403 | machine. */ | |
20404 | const file_entry *fe = state_machine.current_file (); | |
20405 | ||
20406 | if (fe != NULL) | |
804d2729 | 20407 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20408 | } |
20409 | ||
a738430d | 20410 | /* Decode the table. */ |
d9b3de22 | 20411 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20412 | { |
20413 | op_code = read_1_byte (abfd, line_ptr); | |
20414 | line_ptr += 1; | |
9aa1fe7e | 20415 | |
debd256d | 20416 | if (op_code >= lh->opcode_base) |
6e70227d | 20417 | { |
8e07a239 | 20418 | /* Special opcode. */ |
6f77053d | 20419 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20420 | } |
20421 | else switch (op_code) | |
c906108c SS |
20422 | { |
20423 | case DW_LNS_extended_op: | |
3e43a32a MS |
20424 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20425 | &bytes_read); | |
473b7be6 | 20426 | line_ptr += bytes_read; |
a8c50c1f | 20427 | extended_end = line_ptr + extended_len; |
c906108c SS |
20428 | extended_op = read_1_byte (abfd, line_ptr); |
20429 | line_ptr += 1; | |
20430 | switch (extended_op) | |
20431 | { | |
20432 | case DW_LNE_end_sequence: | |
6f77053d PA |
20433 | state_machine.handle_end_sequence (); |
20434 | end_sequence = true; | |
c906108c SS |
20435 | break; |
20436 | case DW_LNE_set_address: | |
d9b3de22 DE |
20437 | { |
20438 | CORE_ADDR address | |
c8a7a66f | 20439 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 20440 | line_ptr += bytes_read; |
6f77053d PA |
20441 | |
20442 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20443 | lowpc - baseaddr, address); |
6f77053d | 20444 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20445 | } |
c906108c SS |
20446 | break; |
20447 | case DW_LNE_define_file: | |
debd256d | 20448 | { |
d521ce57 | 20449 | const char *cur_file; |
ecfb656c PA |
20450 | unsigned int mod_time, length; |
20451 | dir_index dindex; | |
6e70227d | 20452 | |
3e43a32a MS |
20453 | cur_file = read_direct_string (abfd, line_ptr, |
20454 | &bytes_read); | |
debd256d | 20455 | line_ptr += bytes_read; |
ecfb656c | 20456 | dindex = (dir_index) |
debd256d JB |
20457 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20458 | line_ptr += bytes_read; | |
20459 | mod_time = | |
20460 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20461 | line_ptr += bytes_read; | |
20462 | length = | |
20463 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20464 | line_ptr += bytes_read; | |
ecfb656c | 20465 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20466 | } |
c906108c | 20467 | break; |
d0c6ba3d | 20468 | case DW_LNE_set_discriminator: |
6f77053d PA |
20469 | { |
20470 | /* The discriminator is not interesting to the | |
20471 | debugger; just ignore it. We still need to | |
20472 | check its value though: | |
20473 | if there are consecutive entries for the same | |
20474 | (non-prologue) line we want to coalesce them. | |
20475 | PR 17276. */ | |
20476 | unsigned int discr | |
20477 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20478 | line_ptr += bytes_read; | |
20479 | ||
20480 | state_machine.handle_set_discriminator (discr); | |
20481 | } | |
d0c6ba3d | 20482 | break; |
c906108c | 20483 | default: |
b98664d3 | 20484 | complaint (_("mangled .debug_line section")); |
debd256d | 20485 | return; |
c906108c | 20486 | } |
a8c50c1f DJ |
20487 | /* Make sure that we parsed the extended op correctly. If e.g. |
20488 | we expected a different address size than the producer used, | |
20489 | we may have read the wrong number of bytes. */ | |
20490 | if (line_ptr != extended_end) | |
20491 | { | |
b98664d3 | 20492 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20493 | return; |
20494 | } | |
c906108c SS |
20495 | break; |
20496 | case DW_LNS_copy: | |
6f77053d | 20497 | state_machine.handle_copy (); |
c906108c SS |
20498 | break; |
20499 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20500 | { |
20501 | CORE_ADDR adjust | |
20502 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20503 | line_ptr += bytes_read; |
6f77053d PA |
20504 | |
20505 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20506 | } |
c906108c SS |
20507 | break; |
20508 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20509 | { |
20510 | int line_delta | |
20511 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20512 | line_ptr += bytes_read; |
6f77053d PA |
20513 | |
20514 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20515 | } |
c906108c SS |
20516 | break; |
20517 | case DW_LNS_set_file: | |
d9b3de22 | 20518 | { |
6f77053d | 20519 | file_name_index file |
ecfb656c PA |
20520 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20521 | &bytes_read); | |
d9b3de22 | 20522 | line_ptr += bytes_read; |
8c43009f | 20523 | |
6f77053d | 20524 | state_machine.handle_set_file (file); |
d9b3de22 | 20525 | } |
c906108c SS |
20526 | break; |
20527 | case DW_LNS_set_column: | |
0ad93d4f | 20528 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20529 | line_ptr += bytes_read; |
20530 | break; | |
20531 | case DW_LNS_negate_stmt: | |
6f77053d | 20532 | state_machine.handle_negate_stmt (); |
c906108c SS |
20533 | break; |
20534 | case DW_LNS_set_basic_block: | |
c906108c | 20535 | break; |
c2c6d25f JM |
20536 | /* Add to the address register of the state machine the |
20537 | address increment value corresponding to special opcode | |
a738430d MK |
20538 | 255. I.e., this value is scaled by the minimum |
20539 | instruction length since special opcode 255 would have | |
b021a221 | 20540 | scaled the increment. */ |
c906108c | 20541 | case DW_LNS_const_add_pc: |
6f77053d | 20542 | state_machine.handle_const_add_pc (); |
c906108c SS |
20543 | break; |
20544 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20545 | { |
6f77053d | 20546 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20547 | line_ptr += 2; |
6f77053d PA |
20548 | |
20549 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20550 | } |
c906108c | 20551 | break; |
9aa1fe7e | 20552 | default: |
a738430d MK |
20553 | { |
20554 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20555 | int i; |
a738430d | 20556 | |
debd256d | 20557 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20558 | { |
20559 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20560 | line_ptr += bytes_read; | |
20561 | } | |
20562 | } | |
c906108c SS |
20563 | } |
20564 | } | |
d9b3de22 DE |
20565 | |
20566 | if (!end_sequence) | |
20567 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20568 | ||
20569 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20570 | in which case we still finish recording the last line). */ | |
6f77053d | 20571 | state_machine.record_line (true); |
c906108c | 20572 | } |
f3f5162e DE |
20573 | } |
20574 | ||
20575 | /* Decode the Line Number Program (LNP) for the given line_header | |
20576 | structure and CU. The actual information extracted and the type | |
20577 | of structures created from the LNP depends on the value of PST. | |
20578 | ||
20579 | 1. If PST is NULL, then this procedure uses the data from the program | |
20580 | to create all necessary symbol tables, and their linetables. | |
20581 | ||
20582 | 2. If PST is not NULL, this procedure reads the program to determine | |
20583 | the list of files included by the unit represented by PST, and | |
20584 | builds all the associated partial symbol tables. | |
20585 | ||
20586 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20587 | It is used for relative paths in the line table. | |
20588 | NOTE: When processing partial symtabs (pst != NULL), | |
20589 | comp_dir == pst->dirname. | |
20590 | ||
20591 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20592 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20593 | symtab we don't use it in the name of the psymtabs we create. | |
20594 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20595 | A good testcase for this is mb-inline.exp. |
20596 | ||
527f3840 JK |
20597 | LOWPC is the lowest address in CU (or 0 if not known). |
20598 | ||
20599 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20600 | for its PC<->lines mapping information. Otherwise only the filename | |
20601 | table is read in. */ | |
f3f5162e DE |
20602 | |
20603 | static void | |
20604 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 20605 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 20606 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 20607 | { |
5e22e966 | 20608 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20609 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 20610 | |
527f3840 JK |
20611 | if (decode_mapping) |
20612 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20613 | |
20614 | if (decode_for_pst_p) | |
20615 | { | |
aaa75496 JB |
20616 | /* Now that we're done scanning the Line Header Program, we can |
20617 | create the psymtab of each included file. */ | |
7ba99d21 AT |
20618 | for (auto &file_entry : lh->file_names ()) |
20619 | if (file_entry.included_p == 1) | |
aaa75496 | 20620 | { |
c89b44cd | 20621 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 20622 | const char *include_name = |
7ba99d21 AT |
20623 | psymtab_include_file_name (lh, file_entry, pst, |
20624 | comp_dir, &name_holder); | |
c6da4cef | 20625 | if (include_name != NULL) |
aaa75496 JB |
20626 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20627 | } | |
20628 | } | |
cb1df416 DJ |
20629 | else |
20630 | { | |
20631 | /* Make sure a symtab is created for every file, even files | |
20632 | which contain only variables (i.e. no code with associated | |
20633 | line numbers). */ | |
c24bdb02 KS |
20634 | buildsym_compunit *builder = cu->get_builder (); |
20635 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 20636 | |
7ba99d21 | 20637 | for (auto &fe : lh->file_names ()) |
cb1df416 | 20638 | { |
804d2729 | 20639 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 20640 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 20641 | { |
c24bdb02 | 20642 | builder->get_current_subfile ()->symtab |
804d2729 | 20643 | = allocate_symtab (cust, |
c24bdb02 | 20644 | builder->get_current_subfile ()->name); |
43f3e411 | 20645 | } |
c24bdb02 | 20646 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
20647 | } |
20648 | } | |
c906108c SS |
20649 | } |
20650 | ||
20651 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20652 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 20653 | or NULL if not known. |
c906108c SS |
20654 | This routine tries to keep line numbers from identical absolute and |
20655 | relative file names in a common subfile. | |
20656 | ||
20657 | Using the `list' example from the GDB testsuite, which resides in | |
20658 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
20659 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
20660 | ||
c5aa993b | 20661 | DW_AT_name: /srcdir/list0.c |
4d663531 | 20662 | DW_AT_comp_dir: /compdir |
357e46e7 | 20663 | files.files[0].name: list0.h |
c5aa993b | 20664 | files.files[0].dir: /srcdir |
357e46e7 | 20665 | files.files[1].name: list0.c |
c5aa993b | 20666 | files.files[1].dir: /srcdir |
c906108c SS |
20667 | |
20668 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
20669 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
20670 | start_subfile will ensure that this happens provided that we pass the | |
20671 | concatenation of files.files[1].dir and files.files[1].name as the | |
20672 | subfile's name. */ | |
c906108c SS |
20673 | |
20674 | static void | |
804d2729 TT |
20675 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
20676 | const char *dirname) | |
c906108c | 20677 | { |
43816ebc | 20678 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 20679 | |
4d663531 | 20680 | /* In order not to lose the line information directory, |
4f1520fb FR |
20681 | we concatenate it to the filename when it makes sense. |
20682 | Note that the Dwarf3 standard says (speaking of filenames in line | |
20683 | information): ``The directory index is ignored for file names | |
20684 | that represent full path names''. Thus ignoring dirname in the | |
20685 | `else' branch below isn't an issue. */ | |
c906108c | 20686 | |
d5166ae1 | 20687 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 20688 | { |
43816ebc TT |
20689 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
20690 | filename = copy.get (); | |
d521ce57 | 20691 | } |
c906108c | 20692 | |
c24bdb02 | 20693 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
20694 | } |
20695 | ||
804d2729 TT |
20696 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
20697 | buildsym_compunit constructor. */ | |
f4dc4d17 | 20698 | |
c24bdb02 KS |
20699 | struct compunit_symtab * |
20700 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
20701 | CORE_ADDR low_pc) | |
f4dc4d17 | 20702 | { |
c24bdb02 | 20703 | gdb_assert (m_builder == nullptr); |
43f3e411 | 20704 | |
c24bdb02 | 20705 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 20706 | (this->per_objfile->objfile, |
c24bdb02 | 20707 | name, comp_dir, language, low_pc)); |
93b8bea4 | 20708 | |
c24bdb02 | 20709 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 20710 | |
c24bdb02 KS |
20711 | get_builder ()->record_debugformat ("DWARF 2"); |
20712 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 20713 | |
c24bdb02 | 20714 | processing_has_namespace_info = false; |
43f3e411 | 20715 | |
c24bdb02 | 20716 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
20717 | } |
20718 | ||
4c2df51b DJ |
20719 | static void |
20720 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 20721 | struct dwarf2_cu *cu) |
4c2df51b | 20722 | { |
5e22e966 | 20723 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
20724 | struct comp_unit_head *cu_header = &cu->header; |
20725 | ||
4c2df51b DJ |
20726 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
20727 | code here to turn a symbol with DW_AT_external and a | |
20728 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
20729 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
20730 | with some versions of binutils) where shared libraries could have | |
20731 | relocations against symbols in their debug information - the | |
20732 | minimal symbol would have the right address, but the debug info | |
20733 | would not. It's no longer necessary, because we will explicitly | |
20734 | apply relocations when we read in the debug information now. */ | |
20735 | ||
20736 | /* A DW_AT_location attribute with no contents indicates that a | |
20737 | variable has been optimized away. */ | |
4fc6c0d5 | 20738 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 20739 | { |
f1e6e072 | 20740 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
20741 | return; |
20742 | } | |
20743 | ||
20744 | /* Handle one degenerate form of location expression specially, to | |
20745 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
20746 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
20747 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 20748 | |
4fc6c0d5 | 20749 | if (attr->form_is_block () |
3019eac3 DE |
20750 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
20751 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
20752 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
20753 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
20754 | && (DW_BLOCK (attr)->size |
20755 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 20756 | { |
891d2f0b | 20757 | unsigned int dummy; |
4c2df51b | 20758 | |
3019eac3 | 20759 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
20760 | SET_SYMBOL_VALUE_ADDRESS |
20761 | (sym, cu->header.read_address (objfile->obfd, | |
20762 | DW_BLOCK (attr)->data + 1, | |
20763 | &dummy)); | |
3019eac3 | 20764 | else |
38583298 TT |
20765 | SET_SYMBOL_VALUE_ADDRESS |
20766 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
20767 | &dummy)); | |
f1e6e072 | 20768 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 20769 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
20770 | SET_SYMBOL_VALUE_ADDRESS |
20771 | (sym, | |
20772 | SYMBOL_VALUE_ADDRESS (sym) | |
20773 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
20774 | return; |
20775 | } | |
20776 | ||
20777 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
20778 | expression evaluator, and use LOC_COMPUTED only when necessary | |
20779 | (i.e. when the value of a register or memory location is | |
20780 | referenced, or a thread-local block, etc.). Then again, it might | |
20781 | not be worthwhile. I'm assuming that it isn't unless performance | |
20782 | or memory numbers show me otherwise. */ | |
20783 | ||
f1e6e072 | 20784 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 20785 | |
f1e6e072 | 20786 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 20787 | cu->has_loclist = true; |
4c2df51b DJ |
20788 | } |
20789 | ||
c906108c SS |
20790 | /* Given a pointer to a DWARF information entry, figure out if we need |
20791 | to make a symbol table entry for it, and if so, create a new entry | |
20792 | and return a pointer to it. | |
20793 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
20794 | used the passed type. |
20795 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
20796 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
20797 | |
20798 | static struct symbol * | |
5e2db402 TT |
20799 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
20800 | struct symbol *space) | |
c906108c | 20801 | { |
976ca316 SM |
20802 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20803 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 20804 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 20805 | struct symbol *sym = NULL; |
15d034d0 | 20806 | const char *name; |
c906108c SS |
20807 | struct attribute *attr = NULL; |
20808 | struct attribute *attr2 = NULL; | |
e142c38c | 20809 | CORE_ADDR baseaddr; |
e37fd15a SW |
20810 | struct pending **list_to_add = NULL; |
20811 | ||
edb3359d | 20812 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 20813 | |
b3b3bada | 20814 | baseaddr = objfile->text_section_offset (); |
c906108c | 20815 | |
94af9270 | 20816 | name = dwarf2_name (die, cu); |
c906108c SS |
20817 | if (name) |
20818 | { | |
34eaf542 | 20819 | int suppress_add = 0; |
94af9270 | 20820 | |
34eaf542 TT |
20821 | if (space) |
20822 | sym = space; | |
20823 | else | |
8c14c3a3 | 20824 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 20825 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
20826 | |
20827 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 20828 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
20829 | /* Fortran does not have mangling standard and the mangling does differ |
20830 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
20831 | const char *physname |
20832 | = (cu->language == language_fortran | |
20833 | ? dwarf2_full_name (name, die, cu) | |
20834 | : dwarf2_physname (name, die, cu)); | |
20835 | const char *linkagename = dw2_linkage_name (die, cu); | |
20836 | ||
20837 | if (linkagename == nullptr || cu->language == language_ada) | |
20838 | sym->set_linkage_name (physname); | |
20839 | else | |
20840 | { | |
20841 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
20842 | sym->set_linkage_name (linkagename); | |
20843 | } | |
f55ee35c | 20844 | |
c906108c | 20845 | /* Default assumptions. |
c5aa993b | 20846 | Use the passed type or decode it from the die. */ |
176620f1 | 20847 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 20848 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
20849 | if (type != NULL) |
20850 | SYMBOL_TYPE (sym) = type; | |
20851 | else | |
e7c27a73 | 20852 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
20853 | attr = dwarf2_attr (die, |
20854 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
20855 | cu); | |
435d3d88 | 20856 | if (attr != nullptr) |
c906108c SS |
20857 | { |
20858 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
20859 | } | |
cb1df416 | 20860 | |
edb3359d DJ |
20861 | attr = dwarf2_attr (die, |
20862 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
20863 | cu); | |
435d3d88 | 20864 | if (attr != nullptr) |
cb1df416 | 20865 | { |
ecfb656c | 20866 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 20867 | struct file_entry *fe; |
9a619af0 | 20868 | |
ecfb656c PA |
20869 | if (cu->line_header != NULL) |
20870 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
20871 | else |
20872 | fe = NULL; | |
20873 | ||
20874 | if (fe == NULL) | |
b98664d3 | 20875 | complaint (_("file index out of range")); |
8c43009f PA |
20876 | else |
20877 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
20878 | } |
20879 | ||
c906108c SS |
20880 | switch (die->tag) |
20881 | { | |
20882 | case DW_TAG_label: | |
e142c38c | 20883 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 20884 | if (attr != nullptr) |
3e29f34a MR |
20885 | { |
20886 | CORE_ADDR addr; | |
20887 | ||
cd6c91b4 | 20888 | addr = attr->value_as_address (); |
3e29f34a | 20889 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 20890 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 20891 | } |
0f5238ed TT |
20892 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
20893 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 20894 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 20895 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
20896 | break; |
20897 | case DW_TAG_subprogram: | |
20898 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20899 | finish_block. */ | |
f1e6e072 | 20900 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 20901 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 20902 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
20903 | || cu->language == language_ada |
20904 | || cu->language == language_fortran) | |
c906108c | 20905 | { |
2cfa0c8d | 20906 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
20907 | Ada and Fortran subprograms, whether marked external or |
20908 | not, are always stored as a global symbol, because we want | |
20909 | to be able to access them globally. For instance, we want | |
20910 | to be able to break on a nested subprogram without having | |
20911 | to specify the context. */ | |
c24bdb02 | 20912 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
20913 | } |
20914 | else | |
20915 | { | |
e37fd15a | 20916 | list_to_add = cu->list_in_scope; |
c906108c SS |
20917 | } |
20918 | break; | |
edb3359d DJ |
20919 | case DW_TAG_inlined_subroutine: |
20920 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20921 | finish_block. */ | |
f1e6e072 | 20922 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 20923 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 20924 | list_to_add = cu->list_in_scope; |
edb3359d | 20925 | break; |
34eaf542 TT |
20926 | case DW_TAG_template_value_param: |
20927 | suppress_add = 1; | |
20928 | /* Fall through. */ | |
72929c62 | 20929 | case DW_TAG_constant: |
c906108c | 20930 | case DW_TAG_variable: |
254e6b9e | 20931 | case DW_TAG_member: |
0963b4bd MS |
20932 | /* Compilation with minimal debug info may result in |
20933 | variables with missing type entries. Change the | |
20934 | misleading `void' type to something sensible. */ | |
78134374 | 20935 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 20936 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 20937 | |
e142c38c | 20938 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
20939 | /* In the case of DW_TAG_member, we should only be called for |
20940 | static const members. */ | |
20941 | if (die->tag == DW_TAG_member) | |
20942 | { | |
3863f96c DE |
20943 | /* dwarf2_add_field uses die_is_declaration, |
20944 | so we do the same. */ | |
254e6b9e DE |
20945 | gdb_assert (die_is_declaration (die, cu)); |
20946 | gdb_assert (attr); | |
20947 | } | |
435d3d88 | 20948 | if (attr != nullptr) |
c906108c | 20949 | { |
e7c27a73 | 20950 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 20951 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 20952 | if (!suppress_add) |
34eaf542 TT |
20953 | { |
20954 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 20955 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 20956 | else |
e37fd15a | 20957 | list_to_add = cu->list_in_scope; |
34eaf542 | 20958 | } |
c906108c SS |
20959 | break; |
20960 | } | |
e142c38c | 20961 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 20962 | if (attr != nullptr) |
c906108c | 20963 | { |
e7c27a73 | 20964 | var_decode_location (attr, sym, cu); |
e142c38c | 20965 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
20966 | |
20967 | /* Fortran explicitly imports any global symbols to the local | |
20968 | scope by DW_TAG_common_block. */ | |
20969 | if (cu->language == language_fortran && die->parent | |
20970 | && die->parent->tag == DW_TAG_common_block) | |
20971 | attr2 = NULL; | |
20972 | ||
caac4577 JG |
20973 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20974 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 20975 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
20976 | { |
20977 | /* When a static variable is eliminated by the linker, | |
20978 | the corresponding debug information is not stripped | |
20979 | out, but the variable address is set to null; | |
20980 | do not add such variables into symbol table. */ | |
20981 | } | |
20982 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 20983 | { |
4b610737 TT |
20984 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20985 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 20986 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
20987 | { |
20988 | /* A global static variable might be subject to | |
20989 | copy relocation. We first check for a local | |
20990 | minsym, though, because maybe the symbol was | |
20991 | marked hidden, in which case this would not | |
20992 | apply. */ | |
20993 | bound_minimal_symbol found | |
20994 | = (lookup_minimal_symbol_linkage | |
987012b8 | 20995 | (sym->linkage_name (), objfile)); |
4b610737 TT |
20996 | if (found.minsym != nullptr) |
20997 | sym->maybe_copied = 1; | |
20998 | } | |
f55ee35c | 20999 | |
1c809c68 TT |
21000 | /* A variable with DW_AT_external is never static, |
21001 | but it may be block-scoped. */ | |
804d2729 | 21002 | list_to_add |
c24bdb02 KS |
21003 | = ((cu->list_in_scope |
21004 | == cu->get_builder ()->get_file_symbols ()) | |
21005 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21006 | : cu->list_in_scope); |
1c809c68 | 21007 | } |
c906108c | 21008 | else |
e37fd15a | 21009 | list_to_add = cu->list_in_scope; |
c906108c SS |
21010 | } |
21011 | else | |
21012 | { | |
21013 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21014 | If it is an external symbol and we have type information |
21015 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21016 | The address of the variable will then be determined from | |
21017 | the minimal symbol table whenever the variable is | |
21018 | referenced. */ | |
e142c38c | 21019 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21020 | |
21021 | /* Fortran explicitly imports any global symbols to the local | |
21022 | scope by DW_TAG_common_block. */ | |
21023 | if (cu->language == language_fortran && die->parent | |
21024 | && die->parent->tag == DW_TAG_common_block) | |
21025 | { | |
21026 | /* SYMBOL_CLASS doesn't matter here because | |
21027 | read_common_block is going to reset it. */ | |
21028 | if (!suppress_add) | |
21029 | list_to_add = cu->list_in_scope; | |
21030 | } | |
21031 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21032 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21033 | { |
0fe7935b DJ |
21034 | /* A variable with DW_AT_external is never static, but it |
21035 | may be block-scoped. */ | |
804d2729 | 21036 | list_to_add |
c24bdb02 KS |
21037 | = ((cu->list_in_scope |
21038 | == cu->get_builder ()->get_file_symbols ()) | |
21039 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21040 | : cu->list_in_scope); |
0fe7935b | 21041 | |
f1e6e072 | 21042 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21043 | } |
442ddf59 JK |
21044 | else if (!die_is_declaration (die, cu)) |
21045 | { | |
21046 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21047 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21048 | if (!suppress_add) |
21049 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21050 | } |
c906108c SS |
21051 | } |
21052 | break; | |
21053 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21054 | { |
21055 | /* If we are inside a function, mark this as an argument. If | |
21056 | not, we might be looking at an argument to an inlined function | |
21057 | when we do not have enough information to show inlined frames; | |
21058 | pretend it's a local variable in that case so that the user can | |
21059 | still see it. */ | |
804d2729 | 21060 | struct context_stack *curr |
c24bdb02 | 21061 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
21062 | if (curr != nullptr && curr->name != nullptr) |
21063 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21064 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 21065 | if (attr != nullptr) |
a60f3166 TT |
21066 | { |
21067 | var_decode_location (attr, sym, cu); | |
21068 | } | |
21069 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 21070 | if (attr != nullptr) |
a60f3166 TT |
21071 | { |
21072 | dwarf2_const_value (attr, sym, cu); | |
21073 | } | |
f346a30d | 21074 | |
a60f3166 TT |
21075 | list_to_add = cu->list_in_scope; |
21076 | } | |
c906108c SS |
21077 | break; |
21078 | case DW_TAG_unspecified_parameters: | |
21079 | /* From varargs functions; gdb doesn't seem to have any | |
21080 | interest in this information, so just ignore it for now. | |
21081 | (FIXME?) */ | |
21082 | break; | |
34eaf542 TT |
21083 | case DW_TAG_template_type_param: |
21084 | suppress_add = 1; | |
21085 | /* Fall through. */ | |
c906108c | 21086 | case DW_TAG_class_type: |
680b30c7 | 21087 | case DW_TAG_interface_type: |
c906108c SS |
21088 | case DW_TAG_structure_type: |
21089 | case DW_TAG_union_type: | |
72019c9c | 21090 | case DW_TAG_set_type: |
c906108c | 21091 | case DW_TAG_enumeration_type: |
f1e6e072 | 21092 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21093 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21094 | |
63d06c5c | 21095 | { |
9c37b5ae | 21096 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21097 | really ever be static objects: otherwise, if you try |
21098 | to, say, break of a class's method and you're in a file | |
21099 | which doesn't mention that class, it won't work unless | |
21100 | the check for all static symbols in lookup_symbol_aux | |
21101 | saves you. See the OtherFileClass tests in | |
21102 | gdb.c++/namespace.exp. */ | |
21103 | ||
e37fd15a | 21104 | if (!suppress_add) |
34eaf542 | 21105 | { |
c24bdb02 | 21106 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 21107 | list_to_add |
c24bdb02 | 21108 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 21109 | && cu->language == language_cplus |
c24bdb02 | 21110 | ? builder->get_global_symbols () |
804d2729 | 21111 | : cu->list_in_scope); |
63d06c5c | 21112 | |
64382290 | 21113 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21114 | ... }" also defines a typedef for "foo". */ |
64382290 | 21115 | if (cu->language == language_cplus |
45280282 | 21116 | || cu->language == language_ada |
c44af4eb TT |
21117 | || cu->language == language_d |
21118 | || cu->language == language_rust) | |
64382290 TT |
21119 | { |
21120 | /* The symbol's name is already allocated along | |
21121 | with this objfile, so we don't need to | |
21122 | duplicate it for the type. */ | |
7d93a1e0 | 21123 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 21124 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 21125 | } |
63d06c5c DC |
21126 | } |
21127 | } | |
c906108c SS |
21128 | break; |
21129 | case DW_TAG_typedef: | |
f1e6e072 | 21130 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21131 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21132 | list_to_add = cu->list_in_scope; |
63d06c5c | 21133 | break; |
c906108c | 21134 | case DW_TAG_base_type: |
a02abb62 | 21135 | case DW_TAG_subrange_type: |
f1e6e072 | 21136 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21137 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21138 | list_to_add = cu->list_in_scope; |
c906108c SS |
21139 | break; |
21140 | case DW_TAG_enumerator: | |
e142c38c | 21141 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 21142 | if (attr != nullptr) |
c906108c | 21143 | { |
e7c27a73 | 21144 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21145 | } |
63d06c5c DC |
21146 | { |
21147 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21148 | DW_TAG_class_type, etc. block. */ | |
21149 | ||
804d2729 | 21150 | list_to_add |
c24bdb02 | 21151 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21152 | && cu->language == language_cplus |
c24bdb02 | 21153 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21154 | : cu->list_in_scope); |
63d06c5c | 21155 | } |
c906108c | 21156 | break; |
74921315 | 21157 | case DW_TAG_imported_declaration: |
5c4e30ca | 21158 | case DW_TAG_namespace: |
f1e6e072 | 21159 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21160 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21161 | break; |
530e8392 KB |
21162 | case DW_TAG_module: |
21163 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21164 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21165 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21166 | break; |
4357ac6c | 21167 | case DW_TAG_common_block: |
f1e6e072 | 21168 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21169 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21170 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21171 | break; |
c906108c SS |
21172 | default: |
21173 | /* Not a tag we recognize. Hopefully we aren't processing | |
21174 | trash data, but since we must specifically ignore things | |
21175 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21176 | this point. */ |
b98664d3 | 21177 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21178 | dwarf_tag_name (die->tag)); |
c906108c SS |
21179 | break; |
21180 | } | |
df8a16a1 | 21181 | |
e37fd15a SW |
21182 | if (suppress_add) |
21183 | { | |
21184 | sym->hash_next = objfile->template_symbols; | |
21185 | objfile->template_symbols = sym; | |
21186 | list_to_add = NULL; | |
21187 | } | |
21188 | ||
21189 | if (list_to_add != NULL) | |
d3cb6808 | 21190 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21191 | |
df8a16a1 DJ |
21192 | /* For the benefit of old versions of GCC, check for anonymous |
21193 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21194 | if (!cu->processing_has_namespace_info |
94af9270 | 21195 | && cu->language == language_cplus) |
c24bdb02 | 21196 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21197 | } |
21198 | return (sym); | |
21199 | } | |
21200 | ||
98bfdba5 PA |
21201 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21202 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21203 | standard (v4) is not entirely clear about the meaning of using | |
21204 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21205 | wider than the data. The conclusion of a discussion on the DWARF | |
21206 | list was that this is unspecified. We choose to always zero-extend | |
21207 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21208 | |
98bfdba5 | 21209 | static gdb_byte * |
ff39bb5e | 21210 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21211 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21212 | { |
5e22e966 | 21213 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
21214 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21215 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21216 | LONGEST l = DW_UNSND (attr); |
21217 | ||
21218 | if (bits < sizeof (*value) * 8) | |
21219 | { | |
21220 | l &= ((LONGEST) 1 << bits) - 1; | |
21221 | *value = l; | |
21222 | } | |
21223 | else if (bits == sizeof (*value) * 8) | |
21224 | *value = l; | |
21225 | else | |
21226 | { | |
224c3ddb | 21227 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21228 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21229 | return bytes; | |
21230 | } | |
21231 | ||
21232 | return NULL; | |
21233 | } | |
21234 | ||
21235 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21236 | the value does not fit in *VALUE, set *BYTES - either already | |
21237 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21238 | or, set *BATON, if we translated the constant to a location | |
21239 | expression. */ | |
21240 | ||
21241 | static void | |
ff39bb5e | 21242 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21243 | const char *name, struct obstack *obstack, |
21244 | struct dwarf2_cu *cu, | |
d521ce57 | 21245 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21246 | struct dwarf2_locexpr_baton **baton) |
21247 | { | |
5e22e966 | 21248 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 21249 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 21250 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21251 | struct dwarf_block *blk; |
98bfdba5 PA |
21252 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21253 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21254 | ||
21255 | *value = 0; | |
21256 | *bytes = NULL; | |
21257 | *baton = NULL; | |
c906108c SS |
21258 | |
21259 | switch (attr->form) | |
21260 | { | |
21261 | case DW_FORM_addr: | |
336d760d | 21262 | case DW_FORM_addrx: |
3019eac3 | 21263 | case DW_FORM_GNU_addr_index: |
ac56253d | 21264 | { |
ac56253d TT |
21265 | gdb_byte *data; |
21266 | ||
98bfdba5 PA |
21267 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21268 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21269 | cu_header->addr_size, |
98bfdba5 | 21270 | TYPE_LENGTH (type)); |
ac56253d TT |
21271 | /* Symbols of this form are reasonably rare, so we just |
21272 | piggyback on the existing location code rather than writing | |
21273 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21274 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 21275 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
21276 | (*baton)->per_cu = cu->per_cu; |
21277 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21278 | |
98bfdba5 | 21279 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21280 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21281 | (*baton)->data = data; |
ac56253d TT |
21282 | |
21283 | data[0] = DW_OP_addr; | |
21284 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21285 | byte_order, DW_ADDR (attr)); | |
21286 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21287 | } |
c906108c | 21288 | break; |
4ac36638 | 21289 | case DW_FORM_string: |
93b5768b | 21290 | case DW_FORM_strp: |
cf532bd1 | 21291 | case DW_FORM_strx: |
3019eac3 | 21292 | case DW_FORM_GNU_str_index: |
36586728 | 21293 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21294 | /* DW_STRING is already allocated on the objfile obstack, point |
21295 | directly to it. */ | |
d521ce57 | 21296 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21297 | break; |
c906108c SS |
21298 | case DW_FORM_block1: |
21299 | case DW_FORM_block2: | |
21300 | case DW_FORM_block4: | |
21301 | case DW_FORM_block: | |
2dc7f7b3 | 21302 | case DW_FORM_exprloc: |
0224619f | 21303 | case DW_FORM_data16: |
c906108c | 21304 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21305 | if (TYPE_LENGTH (type) != blk->size) |
21306 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21307 | TYPE_LENGTH (type)); | |
21308 | *bytes = blk->data; | |
c906108c | 21309 | break; |
2df3850c JM |
21310 | |
21311 | /* The DW_AT_const_value attributes are supposed to carry the | |
21312 | symbol's value "represented as it would be on the target | |
21313 | architecture." By the time we get here, it's already been | |
21314 | converted to host endianness, so we just need to sign- or | |
21315 | zero-extend it as appropriate. */ | |
21316 | case DW_FORM_data1: | |
3aef2284 | 21317 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21318 | break; |
c906108c | 21319 | case DW_FORM_data2: |
3aef2284 | 21320 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21321 | break; |
c906108c | 21322 | case DW_FORM_data4: |
3aef2284 | 21323 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21324 | break; |
c906108c | 21325 | case DW_FORM_data8: |
3aef2284 | 21326 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21327 | break; |
21328 | ||
c906108c | 21329 | case DW_FORM_sdata: |
663c44ac | 21330 | case DW_FORM_implicit_const: |
98bfdba5 | 21331 | *value = DW_SND (attr); |
2df3850c JM |
21332 | break; |
21333 | ||
c906108c | 21334 | case DW_FORM_udata: |
98bfdba5 | 21335 | *value = DW_UNSND (attr); |
c906108c | 21336 | break; |
2df3850c | 21337 | |
c906108c | 21338 | default: |
b98664d3 | 21339 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21340 | dwarf_form_name (attr->form)); |
98bfdba5 | 21341 | *value = 0; |
c906108c SS |
21342 | break; |
21343 | } | |
21344 | } | |
21345 | ||
2df3850c | 21346 | |
98bfdba5 PA |
21347 | /* Copy constant value from an attribute to a symbol. */ |
21348 | ||
2df3850c | 21349 | static void |
ff39bb5e | 21350 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21351 | struct dwarf2_cu *cu) |
2df3850c | 21352 | { |
5e22e966 | 21353 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 21354 | LONGEST value; |
d521ce57 | 21355 | const gdb_byte *bytes; |
98bfdba5 | 21356 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21357 | |
98bfdba5 | 21358 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21359 | sym->print_name (), |
98bfdba5 PA |
21360 | &objfile->objfile_obstack, cu, |
21361 | &value, &bytes, &baton); | |
2df3850c | 21362 | |
98bfdba5 PA |
21363 | if (baton != NULL) |
21364 | { | |
98bfdba5 | 21365 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21366 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21367 | } |
21368 | else if (bytes != NULL) | |
21369 | { | |
21370 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21371 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21372 | } |
21373 | else | |
21374 | { | |
21375 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21376 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21377 | } |
2df3850c JM |
21378 | } |
21379 | ||
c906108c SS |
21380 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21381 | ||
21382 | static struct type * | |
e7c27a73 | 21383 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21384 | { |
c906108c | 21385 | struct attribute *type_attr; |
c906108c | 21386 | |
e142c38c | 21387 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21388 | if (!type_attr) |
21389 | { | |
5e22e966 | 21390 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21391 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21392 | return objfile_type (objfile)->builtin_void; |
c906108c | 21393 | } |
348e048f | 21394 | |
673bfd45 | 21395 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21396 | } |
21397 | ||
b4ba55a1 JB |
21398 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21399 | that allows to find parallel types through that information instead | |
21400 | of having to do expensive parallel lookups by type name. */ | |
21401 | ||
21402 | static int | |
21403 | need_gnat_info (struct dwarf2_cu *cu) | |
21404 | { | |
de4cb04a JB |
21405 | /* Assume that the Ada compiler was GNAT, which always produces |
21406 | the auxiliary information. */ | |
21407 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21408 | } |
21409 | ||
b4ba55a1 JB |
21410 | /* Return the auxiliary type of the die in question using its |
21411 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21412 | attribute is not present. */ | |
21413 | ||
21414 | static struct type * | |
21415 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21416 | { | |
b4ba55a1 | 21417 | struct attribute *type_attr; |
b4ba55a1 JB |
21418 | |
21419 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21420 | if (!type_attr) | |
21421 | return NULL; | |
21422 | ||
673bfd45 | 21423 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21424 | } |
21425 | ||
21426 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21427 | descriptive type accordingly. */ | |
21428 | ||
21429 | static void | |
21430 | set_descriptive_type (struct type *type, struct die_info *die, | |
21431 | struct dwarf2_cu *cu) | |
21432 | { | |
21433 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21434 | ||
21435 | if (descriptive_type) | |
21436 | { | |
21437 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21438 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21439 | } | |
21440 | } | |
21441 | ||
c906108c SS |
21442 | /* Return the containing type of the die in question using its |
21443 | DW_AT_containing_type attribute. */ | |
21444 | ||
21445 | static struct type * | |
e7c27a73 | 21446 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21447 | { |
c906108c | 21448 | struct attribute *type_attr; |
5e22e966 | 21449 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21450 | |
e142c38c | 21451 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21452 | if (!type_attr) |
21453 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21454 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21455 | |
673bfd45 | 21456 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21457 | } |
21458 | ||
ac9ec31b DE |
21459 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21460 | ||
21461 | static struct type * | |
21462 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21463 | { | |
976ca316 SM |
21464 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
21465 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 21466 | char *saved; |
ac9ec31b | 21467 | |
528e1572 SM |
21468 | std::string message |
21469 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21470 | objfile_name (objfile), | |
21471 | sect_offset_str (cu->header.sect_off), | |
21472 | sect_offset_str (die->sect_off)); | |
efba19b0 | 21473 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 21474 | |
19f392bc | 21475 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21476 | } |
21477 | ||
673bfd45 | 21478 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21479 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21480 | DW_AT_containing_type. | |
673bfd45 DE |
21481 | If there is no type substitute an error marker. */ |
21482 | ||
c906108c | 21483 | static struct type * |
ff39bb5e | 21484 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21485 | struct dwarf2_cu *cu) |
c906108c | 21486 | { |
976ca316 SM |
21487 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
21488 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
21489 | struct type *this_type; |
21490 | ||
ac9ec31b DE |
21491 | gdb_assert (attr->name == DW_AT_type |
21492 | || attr->name == DW_AT_GNAT_descriptive_type | |
21493 | || attr->name == DW_AT_containing_type); | |
21494 | ||
673bfd45 DE |
21495 | /* First see if we have it cached. */ |
21496 | ||
36586728 TT |
21497 | if (attr->form == DW_FORM_GNU_ref_alt) |
21498 | { | |
21499 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 21500 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 21501 | |
976ca316 SM |
21502 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
21503 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 21504 | } |
cd6c91b4 | 21505 | else if (attr->form_is_ref ()) |
673bfd45 | 21506 | { |
0826b30a | 21507 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 21508 | |
976ca316 | 21509 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 21510 | } |
55f1336d | 21511 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21512 | { |
ac9ec31b | 21513 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21514 | |
ac9ec31b | 21515 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21516 | } |
21517 | else | |
21518 | { | |
b98664d3 | 21519 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
21520 | " at %s [in module %s]"), |
21521 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21522 | objfile_name (objfile)); |
ac9ec31b | 21523 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21524 | } |
21525 | ||
21526 | /* If not cached we need to read it in. */ | |
21527 | ||
21528 | if (this_type == NULL) | |
21529 | { | |
ac9ec31b | 21530 | struct die_info *type_die = NULL; |
673bfd45 DE |
21531 | struct dwarf2_cu *type_cu = cu; |
21532 | ||
cd6c91b4 | 21533 | if (attr->form_is_ref ()) |
ac9ec31b DE |
21534 | type_die = follow_die_ref (die, attr, &type_cu); |
21535 | if (type_die == NULL) | |
21536 | return build_error_marker_type (cu, die); | |
21537 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21538 | from an inter-CU reference and the type's CU got expanded before |
21539 | ours. */ | |
ac9ec31b | 21540 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21541 | } |
21542 | ||
21543 | /* If we still don't have a type use an error marker. */ | |
21544 | ||
21545 | if (this_type == NULL) | |
ac9ec31b | 21546 | return build_error_marker_type (cu, die); |
673bfd45 | 21547 | |
f792889a | 21548 | return this_type; |
c906108c SS |
21549 | } |
21550 | ||
673bfd45 DE |
21551 | /* Return the type in DIE, CU. |
21552 | Returns NULL for invalid types. | |
21553 | ||
02142a6c | 21554 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21555 | and only reads the die in if necessary. |
21556 | ||
21557 | NOTE: This can be called when reading in partial or full symbols. */ | |
21558 | ||
f792889a | 21559 | static struct type * |
e7c27a73 | 21560 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21561 | { |
f792889a DJ |
21562 | struct type *this_type; |
21563 | ||
21564 | this_type = get_die_type (die, cu); | |
21565 | if (this_type) | |
21566 | return this_type; | |
21567 | ||
673bfd45 DE |
21568 | return read_type_die_1 (die, cu); |
21569 | } | |
21570 | ||
21571 | /* Read the type in DIE, CU. | |
21572 | Returns NULL for invalid types. */ | |
21573 | ||
21574 | static struct type * | |
21575 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21576 | { | |
21577 | struct type *this_type = NULL; | |
21578 | ||
c906108c SS |
21579 | switch (die->tag) |
21580 | { | |
21581 | case DW_TAG_class_type: | |
680b30c7 | 21582 | case DW_TAG_interface_type: |
c906108c SS |
21583 | case DW_TAG_structure_type: |
21584 | case DW_TAG_union_type: | |
f792889a | 21585 | this_type = read_structure_type (die, cu); |
c906108c SS |
21586 | break; |
21587 | case DW_TAG_enumeration_type: | |
f792889a | 21588 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21589 | break; |
21590 | case DW_TAG_subprogram: | |
21591 | case DW_TAG_subroutine_type: | |
edb3359d | 21592 | case DW_TAG_inlined_subroutine: |
f792889a | 21593 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21594 | break; |
21595 | case DW_TAG_array_type: | |
f792889a | 21596 | this_type = read_array_type (die, cu); |
c906108c | 21597 | break; |
72019c9c | 21598 | case DW_TAG_set_type: |
f792889a | 21599 | this_type = read_set_type (die, cu); |
72019c9c | 21600 | break; |
c906108c | 21601 | case DW_TAG_pointer_type: |
f792889a | 21602 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21603 | break; |
21604 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21605 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21606 | break; |
21607 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21608 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21609 | break; | |
21610 | case DW_TAG_rvalue_reference_type: | |
21611 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21612 | break; |
21613 | case DW_TAG_const_type: | |
f792889a | 21614 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21615 | break; |
21616 | case DW_TAG_volatile_type: | |
f792889a | 21617 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21618 | break; |
06d66ee9 TT |
21619 | case DW_TAG_restrict_type: |
21620 | this_type = read_tag_restrict_type (die, cu); | |
21621 | break; | |
c906108c | 21622 | case DW_TAG_string_type: |
f792889a | 21623 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21624 | break; |
21625 | case DW_TAG_typedef: | |
f792889a | 21626 | this_type = read_typedef (die, cu); |
c906108c | 21627 | break; |
a02abb62 | 21628 | case DW_TAG_subrange_type: |
f792889a | 21629 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21630 | break; |
c906108c | 21631 | case DW_TAG_base_type: |
f792889a | 21632 | this_type = read_base_type (die, cu); |
c906108c | 21633 | break; |
81a17f79 | 21634 | case DW_TAG_unspecified_type: |
f792889a | 21635 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21636 | break; |
0114d602 DJ |
21637 | case DW_TAG_namespace: |
21638 | this_type = read_namespace_type (die, cu); | |
21639 | break; | |
f55ee35c JK |
21640 | case DW_TAG_module: |
21641 | this_type = read_module_type (die, cu); | |
21642 | break; | |
a2c2acaf MW |
21643 | case DW_TAG_atomic_type: |
21644 | this_type = read_tag_atomic_type (die, cu); | |
21645 | break; | |
c906108c | 21646 | default: |
b98664d3 | 21647 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 21648 | dwarf_tag_name (die->tag)); |
c906108c SS |
21649 | break; |
21650 | } | |
63d06c5c | 21651 | |
f792889a | 21652 | return this_type; |
63d06c5c DC |
21653 | } |
21654 | ||
abc72ce4 DE |
21655 | /* See if we can figure out if the class lives in a namespace. We do |
21656 | this by looking for a member function; its demangled name will | |
21657 | contain namespace info, if there is any. | |
21658 | Return the computed name or NULL. | |
21659 | Space for the result is allocated on the objfile's obstack. | |
21660 | This is the full-die version of guess_partial_die_structure_name. | |
21661 | In this case we know DIE has no useful parent. */ | |
21662 | ||
43816ebc | 21663 | static const char * |
abc72ce4 DE |
21664 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
21665 | { | |
21666 | struct die_info *spec_die; | |
21667 | struct dwarf2_cu *spec_cu; | |
21668 | struct die_info *child; | |
5e22e966 | 21669 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
21670 | |
21671 | spec_cu = cu; | |
21672 | spec_die = die_specification (die, &spec_cu); | |
21673 | if (spec_die != NULL) | |
21674 | { | |
21675 | die = spec_die; | |
21676 | cu = spec_cu; | |
21677 | } | |
21678 | ||
21679 | for (child = die->child; | |
21680 | child != NULL; | |
21681 | child = child->sibling) | |
21682 | { | |
21683 | if (child->tag == DW_TAG_subprogram) | |
21684 | { | |
73b9be8b | 21685 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 21686 | |
7d45c7c3 | 21687 | if (linkage_name != NULL) |
abc72ce4 | 21688 | { |
43816ebc TT |
21689 | gdb::unique_xmalloc_ptr<char> actual_name |
21690 | (language_class_name_from_physname (cu->language_defn, | |
21691 | linkage_name)); | |
21692 | const char *name = NULL; | |
abc72ce4 DE |
21693 | |
21694 | if (actual_name != NULL) | |
21695 | { | |
15d034d0 | 21696 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
21697 | |
21698 | if (die_name != NULL | |
43816ebc | 21699 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
21700 | { |
21701 | /* Strip off the class name from the full name. | |
21702 | We want the prefix. */ | |
21703 | int die_name_len = strlen (die_name); | |
43816ebc TT |
21704 | int actual_name_len = strlen (actual_name.get ()); |
21705 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
21706 | |
21707 | /* Test for '::' as a sanity check. */ | |
21708 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 21709 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 21710 | name = obstack_strndup ( |
e3b94546 | 21711 | &objfile->per_bfd->storage_obstack, |
43816ebc | 21712 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
21713 | } |
21714 | } | |
abc72ce4 DE |
21715 | return name; |
21716 | } | |
21717 | } | |
21718 | } | |
21719 | ||
21720 | return NULL; | |
21721 | } | |
21722 | ||
96408a79 SA |
21723 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
21724 | prefix part in such case. See | |
21725 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21726 | ||
a121b7c1 | 21727 | static const char * |
96408a79 SA |
21728 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
21729 | { | |
21730 | struct attribute *attr; | |
e6a959d6 | 21731 | const char *base; |
96408a79 SA |
21732 | |
21733 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
21734 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
21735 | return NULL; | |
21736 | ||
7d45c7c3 | 21737 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
21738 | return NULL; |
21739 | ||
73b9be8b | 21740 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
21741 | if (attr == NULL || DW_STRING (attr) == NULL) |
21742 | return NULL; | |
21743 | ||
21744 | /* dwarf2_name had to be already called. */ | |
21745 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
21746 | ||
21747 | /* Strip the base name, keep any leading namespaces/classes. */ | |
21748 | base = strrchr (DW_STRING (attr), ':'); | |
21749 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
21750 | return ""; | |
21751 | ||
5e22e966 | 21752 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 TT |
21753 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
21754 | DW_STRING (attr), | |
21755 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
21756 | } |
21757 | ||
fdde2d81 | 21758 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 21759 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 21760 | |
0114d602 DJ |
21761 | For example, if we're within the method foo() in the following |
21762 | code: | |
21763 | ||
21764 | namespace N { | |
21765 | class C { | |
21766 | void foo () { | |
21767 | } | |
21768 | }; | |
21769 | } | |
21770 | ||
21771 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 21772 | |
0d5cff50 | 21773 | static const char * |
e142c38c | 21774 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 21775 | { |
976ca316 | 21776 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
21777 | struct die_info *parent, *spec_die; |
21778 | struct dwarf2_cu *spec_cu; | |
21779 | struct type *parent_type; | |
a121b7c1 | 21780 | const char *retval; |
63d06c5c | 21781 | |
9c37b5ae | 21782 | if (cu->language != language_cplus |
c44af4eb TT |
21783 | && cu->language != language_fortran && cu->language != language_d |
21784 | && cu->language != language_rust) | |
0114d602 DJ |
21785 | return ""; |
21786 | ||
96408a79 SA |
21787 | retval = anonymous_struct_prefix (die, cu); |
21788 | if (retval) | |
21789 | return retval; | |
21790 | ||
0114d602 DJ |
21791 | /* We have to be careful in the presence of DW_AT_specification. |
21792 | For example, with GCC 3.4, given the code | |
21793 | ||
21794 | namespace N { | |
21795 | void foo() { | |
21796 | // Definition of N::foo. | |
21797 | } | |
21798 | } | |
21799 | ||
21800 | then we'll have a tree of DIEs like this: | |
21801 | ||
21802 | 1: DW_TAG_compile_unit | |
21803 | 2: DW_TAG_namespace // N | |
21804 | 3: DW_TAG_subprogram // declaration of N::foo | |
21805 | 4: DW_TAG_subprogram // definition of N::foo | |
21806 | DW_AT_specification // refers to die #3 | |
21807 | ||
21808 | Thus, when processing die #4, we have to pretend that we're in | |
21809 | the context of its DW_AT_specification, namely the contex of die | |
21810 | #3. */ | |
21811 | spec_cu = cu; | |
21812 | spec_die = die_specification (die, &spec_cu); | |
21813 | if (spec_die == NULL) | |
21814 | parent = die->parent; | |
21815 | else | |
63d06c5c | 21816 | { |
0114d602 DJ |
21817 | parent = spec_die->parent; |
21818 | cu = spec_cu; | |
63d06c5c | 21819 | } |
0114d602 DJ |
21820 | |
21821 | if (parent == NULL) | |
21822 | return ""; | |
98bfdba5 PA |
21823 | else if (parent->building_fullname) |
21824 | { | |
21825 | const char *name; | |
21826 | const char *parent_name; | |
21827 | ||
21828 | /* It has been seen on RealView 2.2 built binaries, | |
21829 | DW_TAG_template_type_param types actually _defined_ as | |
21830 | children of the parent class: | |
21831 | ||
21832 | enum E {}; | |
21833 | template class <class Enum> Class{}; | |
21834 | Class<enum E> class_e; | |
21835 | ||
21836 | 1: DW_TAG_class_type (Class) | |
21837 | 2: DW_TAG_enumeration_type (E) | |
21838 | 3: DW_TAG_enumerator (enum1:0) | |
21839 | 3: DW_TAG_enumerator (enum2:1) | |
21840 | ... | |
21841 | 2: DW_TAG_template_type_param | |
21842 | DW_AT_type DW_FORM_ref_udata (E) | |
21843 | ||
21844 | Besides being broken debug info, it can put GDB into an | |
21845 | infinite loop. Consider: | |
21846 | ||
21847 | When we're building the full name for Class<E>, we'll start | |
21848 | at Class, and go look over its template type parameters, | |
21849 | finding E. We'll then try to build the full name of E, and | |
21850 | reach here. We're now trying to build the full name of E, | |
21851 | and look over the parent DIE for containing scope. In the | |
21852 | broken case, if we followed the parent DIE of E, we'd again | |
21853 | find Class, and once again go look at its template type | |
21854 | arguments, etc., etc. Simply don't consider such parent die | |
21855 | as source-level parent of this die (it can't be, the language | |
21856 | doesn't allow it), and break the loop here. */ | |
21857 | name = dwarf2_name (die, cu); | |
21858 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 21859 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
21860 | name ? name : "<unknown>", |
21861 | parent_name ? parent_name : "<unknown>"); | |
21862 | return ""; | |
21863 | } | |
63d06c5c | 21864 | else |
0114d602 DJ |
21865 | switch (parent->tag) |
21866 | { | |
63d06c5c | 21867 | case DW_TAG_namespace: |
0114d602 | 21868 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
21869 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
21870 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
21871 | Work around this problem here. */ | |
21872 | if (cu->language == language_cplus | |
7d93a1e0 | 21873 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 21874 | return ""; |
0114d602 | 21875 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 21876 | return parent_type->name (); |
63d06c5c | 21877 | case DW_TAG_class_type: |
680b30c7 | 21878 | case DW_TAG_interface_type: |
63d06c5c | 21879 | case DW_TAG_structure_type: |
0114d602 | 21880 | case DW_TAG_union_type: |
f55ee35c | 21881 | case DW_TAG_module: |
0114d602 | 21882 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
21883 | if (parent_type->name () != NULL) |
21884 | return parent_type->name (); | |
0114d602 DJ |
21885 | else |
21886 | /* An anonymous structure is only allowed non-static data | |
21887 | members; no typedefs, no member functions, et cetera. | |
21888 | So it does not need a prefix. */ | |
21889 | return ""; | |
abc72ce4 | 21890 | case DW_TAG_compile_unit: |
95554aad | 21891 | case DW_TAG_partial_unit: |
abc72ce4 DE |
21892 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
21893 | if (cu->language == language_cplus | |
976ca316 | 21894 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
21895 | && die->child != NULL |
21896 | && (die->tag == DW_TAG_class_type | |
21897 | || die->tag == DW_TAG_structure_type | |
21898 | || die->tag == DW_TAG_union_type)) | |
21899 | { | |
43816ebc | 21900 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
21901 | if (name != NULL) |
21902 | return name; | |
21903 | } | |
21904 | return ""; | |
0a4b0913 AB |
21905 | case DW_TAG_subprogram: |
21906 | /* Nested subroutines in Fortran get a prefix with the name | |
21907 | of the parent's subroutine. */ | |
21908 | if (cu->language == language_fortran) | |
21909 | { | |
21910 | if ((die->tag == DW_TAG_subprogram) | |
21911 | && (dwarf2_name (parent, cu) != NULL)) | |
21912 | return dwarf2_name (parent, cu); | |
21913 | } | |
21914 | return determine_prefix (parent, cu); | |
3d567982 TT |
21915 | case DW_TAG_enumeration_type: |
21916 | parent_type = read_type_die (parent, cu); | |
21917 | if (TYPE_DECLARED_CLASS (parent_type)) | |
21918 | { | |
7d93a1e0 SM |
21919 | if (parent_type->name () != NULL) |
21920 | return parent_type->name (); | |
3d567982 TT |
21921 | return ""; |
21922 | } | |
21923 | /* Fall through. */ | |
63d06c5c | 21924 | default: |
8176b9b8 | 21925 | return determine_prefix (parent, cu); |
63d06c5c | 21926 | } |
63d06c5c DC |
21927 | } |
21928 | ||
3e43a32a MS |
21929 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
21930 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
21931 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
21932 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
21933 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 21934 | |
f55ee35c | 21935 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
21936 | |
21937 | static char * | |
f55ee35c JK |
21938 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
21939 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 21940 | { |
f55ee35c | 21941 | const char *lead = ""; |
5c315b68 | 21942 | const char *sep; |
63d06c5c | 21943 | |
3e43a32a MS |
21944 | if (suffix == NULL || suffix[0] == '\0' |
21945 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 21946 | sep = ""; |
45280282 IB |
21947 | else if (cu->language == language_d) |
21948 | { | |
21949 | /* For D, the 'main' function could be defined in any module, but it | |
21950 | should never be prefixed. */ | |
21951 | if (strcmp (suffix, "D main") == 0) | |
21952 | { | |
21953 | prefix = ""; | |
21954 | sep = ""; | |
21955 | } | |
21956 | else | |
21957 | sep = "."; | |
21958 | } | |
f55ee35c JK |
21959 | else if (cu->language == language_fortran && physname) |
21960 | { | |
21961 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
21962 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
21963 | ||
21964 | lead = "__"; | |
21965 | sep = "_MOD_"; | |
21966 | } | |
987504bb JJ |
21967 | else |
21968 | sep = "::"; | |
63d06c5c | 21969 | |
6dd47d34 DE |
21970 | if (prefix == NULL) |
21971 | prefix = ""; | |
21972 | if (suffix == NULL) | |
21973 | suffix = ""; | |
21974 | ||
987504bb JJ |
21975 | if (obs == NULL) |
21976 | { | |
3e43a32a | 21977 | char *retval |
224c3ddb SM |
21978 | = ((char *) |
21979 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 21980 | |
f55ee35c JK |
21981 | strcpy (retval, lead); |
21982 | strcat (retval, prefix); | |
6dd47d34 DE |
21983 | strcat (retval, sep); |
21984 | strcat (retval, suffix); | |
63d06c5c DC |
21985 | return retval; |
21986 | } | |
987504bb JJ |
21987 | else |
21988 | { | |
21989 | /* We have an obstack. */ | |
f55ee35c | 21990 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 21991 | } |
63d06c5c DC |
21992 | } |
21993 | ||
71c25dea TT |
21994 | /* Get name of a die, return NULL if not found. */ |
21995 | ||
15d034d0 TT |
21996 | static const char * |
21997 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 21998 | struct objfile *objfile) |
71c25dea TT |
21999 | { |
22000 | if (name && cu->language == language_cplus) | |
22001 | { | |
596dc4ad TT |
22002 | gdb::unique_xmalloc_ptr<char> canon_name |
22003 | = cp_canonicalize_string (name); | |
71c25dea | 22004 | |
596dc4ad TT |
22005 | if (canon_name != nullptr) |
22006 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
22007 | } |
22008 | ||
22009 | return name; | |
c906108c SS |
22010 | } |
22011 | ||
96553a0c DE |
22012 | /* Get name of a die, return NULL if not found. |
22013 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22014 | |
15d034d0 | 22015 | static const char * |
e142c38c | 22016 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22017 | { |
22018 | struct attribute *attr; | |
5e22e966 | 22019 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 22020 | |
e142c38c | 22021 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22022 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22023 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22024 | && die->tag != DW_TAG_class_type |
22025 | && die->tag != DW_TAG_interface_type | |
22026 | && die->tag != DW_TAG_structure_type | |
22027 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22028 | return NULL; |
22029 | ||
22030 | switch (die->tag) | |
22031 | { | |
22032 | case DW_TAG_compile_unit: | |
95554aad | 22033 | case DW_TAG_partial_unit: |
71c25dea TT |
22034 | /* Compilation units have a DW_AT_name that is a filename, not |
22035 | a source language identifier. */ | |
22036 | case DW_TAG_enumeration_type: | |
22037 | case DW_TAG_enumerator: | |
22038 | /* These tags always have simple identifiers already; no need | |
22039 | to canonicalize them. */ | |
22040 | return DW_STRING (attr); | |
907af001 | 22041 | |
96553a0c DE |
22042 | case DW_TAG_namespace: |
22043 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22044 | return DW_STRING (attr); | |
22045 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22046 | ||
907af001 UW |
22047 | case DW_TAG_class_type: |
22048 | case DW_TAG_interface_type: | |
22049 | case DW_TAG_structure_type: | |
22050 | case DW_TAG_union_type: | |
22051 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22052 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22053 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22054 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22055 | if (attr && DW_STRING (attr) |
61012eef GB |
22056 | && (startswith (DW_STRING (attr), "._") |
22057 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22058 | return NULL; |
53832f31 TT |
22059 | |
22060 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22061 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22062 | if (!attr || DW_STRING (attr) == NULL) | |
22063 | { | |
73b9be8b | 22064 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22065 | if (attr == NULL || DW_STRING (attr) == NULL) |
22066 | return NULL; | |
22067 | ||
df5c6c50 JK |
22068 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22069 | call for the same DIE. */ | |
22070 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 22071 | { |
43816ebc TT |
22072 | gdb::unique_xmalloc_ptr<char> demangled |
22073 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
22074 | if (demangled == nullptr) |
22075 | return nullptr; | |
43816ebc | 22076 | |
be1e3d3e | 22077 | DW_STRING (attr) = objfile->intern (demangled.get ()); |
53832f31 | 22078 | DW_STRING_IS_CANONICAL (attr) = 1; |
53832f31 | 22079 | } |
67430cd0 TT |
22080 | |
22081 | /* Strip any leading namespaces/classes, keep only the base name. | |
22082 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22083 | const char *base = strrchr (DW_STRING (attr), ':'); | |
22084 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22085 | return &base[1]; | |
22086 | else | |
22087 | return DW_STRING (attr); | |
53832f31 | 22088 | } |
907af001 UW |
22089 | break; |
22090 | ||
71c25dea | 22091 | default: |
907af001 UW |
22092 | break; |
22093 | } | |
22094 | ||
22095 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22096 | { | |
be1e3d3e TT |
22097 | DW_STRING (attr) = dwarf2_canonicalize_name (DW_STRING (attr), cu, |
22098 | objfile); | |
907af001 | 22099 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22100 | } |
907af001 | 22101 | return DW_STRING (attr); |
9219021c DC |
22102 | } |
22103 | ||
22104 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22105 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22106 | containing the return value on output. */ | |
9219021c DC |
22107 | |
22108 | static struct die_info * | |
f2f0e013 | 22109 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22110 | { |
22111 | struct attribute *attr; | |
9219021c | 22112 | |
f2f0e013 | 22113 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22114 | if (attr == NULL) |
22115 | return NULL; | |
22116 | ||
f2f0e013 | 22117 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22118 | } |
22119 | ||
f9aca02d | 22120 | static void |
d97bc12b | 22121 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22122 | { |
22123 | unsigned int i; | |
22124 | ||
d97bc12b | 22125 | print_spaces (indent, f); |
9d8780f0 | 22126 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22127 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22128 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22129 | |
22130 | if (die->parent != NULL) | |
22131 | { | |
22132 | print_spaces (indent, f); | |
9d8780f0 SM |
22133 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22134 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22135 | } |
22136 | ||
22137 | print_spaces (indent, f); | |
22138 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22139 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22140 | |
d97bc12b DE |
22141 | print_spaces (indent, f); |
22142 | fprintf_unfiltered (f, " attributes:\n"); | |
22143 | ||
c906108c SS |
22144 | for (i = 0; i < die->num_attrs; ++i) |
22145 | { | |
d97bc12b DE |
22146 | print_spaces (indent, f); |
22147 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22148 | dwarf_attr_name (die->attrs[i].name), |
22149 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22150 | |
c906108c SS |
22151 | switch (die->attrs[i].form) |
22152 | { | |
c906108c | 22153 | case DW_FORM_addr: |
336d760d | 22154 | case DW_FORM_addrx: |
3019eac3 | 22155 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22156 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22157 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22158 | break; |
22159 | case DW_FORM_block2: | |
22160 | case DW_FORM_block4: | |
22161 | case DW_FORM_block: | |
22162 | case DW_FORM_block1: | |
56eb65bd SP |
22163 | fprintf_unfiltered (f, "block: size %s", |
22164 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22165 | break; |
2dc7f7b3 | 22166 | case DW_FORM_exprloc: |
56eb65bd SP |
22167 | fprintf_unfiltered (f, "expression: size %s", |
22168 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22169 | break; |
0224619f JK |
22170 | case DW_FORM_data16: |
22171 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22172 | break; | |
4568ecf9 DE |
22173 | case DW_FORM_ref_addr: |
22174 | fprintf_unfiltered (f, "ref address: "); | |
22175 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22176 | break; | |
36586728 TT |
22177 | case DW_FORM_GNU_ref_alt: |
22178 | fprintf_unfiltered (f, "alt ref address: "); | |
22179 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22180 | break; | |
10b3939b DJ |
22181 | case DW_FORM_ref1: |
22182 | case DW_FORM_ref2: | |
22183 | case DW_FORM_ref4: | |
4568ecf9 DE |
22184 | case DW_FORM_ref8: |
22185 | case DW_FORM_ref_udata: | |
d97bc12b | 22186 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22187 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22188 | break; |
c906108c SS |
22189 | case DW_FORM_data1: |
22190 | case DW_FORM_data2: | |
22191 | case DW_FORM_data4: | |
ce5d95e1 | 22192 | case DW_FORM_data8: |
c906108c SS |
22193 | case DW_FORM_udata: |
22194 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22195 | fprintf_unfiltered (f, "constant: %s", |
22196 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22197 | break; |
2dc7f7b3 TT |
22198 | case DW_FORM_sec_offset: |
22199 | fprintf_unfiltered (f, "section offset: %s", | |
22200 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22201 | break; | |
55f1336d | 22202 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22203 | fprintf_unfiltered (f, "signature: %s", |
22204 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22205 | break; |
c906108c | 22206 | case DW_FORM_string: |
4bdf3d34 | 22207 | case DW_FORM_strp: |
43988095 | 22208 | case DW_FORM_line_strp: |
cf532bd1 | 22209 | case DW_FORM_strx: |
3019eac3 | 22210 | case DW_FORM_GNU_str_index: |
36586728 | 22211 | case DW_FORM_GNU_strp_alt: |
8285870a | 22212 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22213 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22214 | ? DW_STRING (&die->attrs[i]) : "", |
22215 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22216 | break; |
22217 | case DW_FORM_flag: | |
22218 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22219 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22220 | else |
d97bc12b | 22221 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22222 | break; |
2dc7f7b3 TT |
22223 | case DW_FORM_flag_present: |
22224 | fprintf_unfiltered (f, "flag: TRUE"); | |
22225 | break; | |
a8329558 | 22226 | case DW_FORM_indirect: |
0963b4bd MS |
22227 | /* The reader will have reduced the indirect form to |
22228 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 22229 | fprintf_unfiltered (f, |
3e43a32a | 22230 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 22231 | break; |
663c44ac JK |
22232 | case DW_FORM_implicit_const: |
22233 | fprintf_unfiltered (f, "constant: %s", | |
22234 | plongest (DW_SND (&die->attrs[i]))); | |
22235 | break; | |
c906108c | 22236 | default: |
d97bc12b | 22237 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22238 | die->attrs[i].form); |
d97bc12b | 22239 | break; |
c906108c | 22240 | } |
d97bc12b | 22241 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22242 | } |
22243 | } | |
22244 | ||
f9aca02d | 22245 | static void |
d97bc12b | 22246 | dump_die_for_error (struct die_info *die) |
c906108c | 22247 | { |
d97bc12b DE |
22248 | dump_die_shallow (gdb_stderr, 0, die); |
22249 | } | |
22250 | ||
22251 | static void | |
22252 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22253 | { | |
22254 | int indent = level * 4; | |
22255 | ||
22256 | gdb_assert (die != NULL); | |
22257 | ||
22258 | if (level >= max_level) | |
22259 | return; | |
22260 | ||
22261 | dump_die_shallow (f, indent, die); | |
22262 | ||
22263 | if (die->child != NULL) | |
c906108c | 22264 | { |
d97bc12b DE |
22265 | print_spaces (indent, f); |
22266 | fprintf_unfiltered (f, " Children:"); | |
22267 | if (level + 1 < max_level) | |
22268 | { | |
22269 | fprintf_unfiltered (f, "\n"); | |
22270 | dump_die_1 (f, level + 1, max_level, die->child); | |
22271 | } | |
22272 | else | |
22273 | { | |
3e43a32a MS |
22274 | fprintf_unfiltered (f, |
22275 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22276 | } |
22277 | } | |
22278 | ||
22279 | if (die->sibling != NULL && level > 0) | |
22280 | { | |
22281 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22282 | } |
22283 | } | |
22284 | ||
d97bc12b DE |
22285 | /* This is called from the pdie macro in gdbinit.in. |
22286 | It's not static so gcc will keep a copy callable from gdb. */ | |
22287 | ||
22288 | void | |
22289 | dump_die (struct die_info *die, int max_level) | |
22290 | { | |
22291 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22292 | } | |
22293 | ||
f9aca02d | 22294 | static void |
51545339 | 22295 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22296 | { |
51545339 | 22297 | void **slot; |
c906108c | 22298 | |
9c541725 PA |
22299 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22300 | to_underlying (die->sect_off), | |
b64f50a1 | 22301 | INSERT); |
51545339 DJ |
22302 | |
22303 | *slot = die; | |
c906108c SS |
22304 | } |
22305 | ||
348e048f DE |
22306 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22307 | On entry *REF_CU is the CU of SRC_DIE. | |
22308 | On exit *REF_CU is the CU of the result. */ | |
22309 | ||
22310 | static struct die_info * | |
ff39bb5e | 22311 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22312 | struct dwarf2_cu **ref_cu) |
22313 | { | |
22314 | struct die_info *die; | |
22315 | ||
cd6c91b4 | 22316 | if (attr->form_is_ref ()) |
348e048f | 22317 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22318 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22319 | die = follow_die_sig (src_die, attr, ref_cu); |
22320 | else | |
22321 | { | |
22322 | dump_die_for_error (src_die); | |
22323 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 22324 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
22325 | } |
22326 | ||
22327 | return die; | |
03dd20cc DJ |
22328 | } |
22329 | ||
5c631832 | 22330 | /* Follow reference OFFSET. |
673bfd45 DE |
22331 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22332 | On exit *REF_CU is the CU of the result. | |
22333 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22334 | |
f9aca02d | 22335 | static struct die_info * |
9c541725 | 22336 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22337 | struct dwarf2_cu **ref_cu) |
c906108c | 22338 | { |
10b3939b | 22339 | struct die_info temp_die; |
f2f0e013 | 22340 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 22341 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 22342 | |
348e048f DE |
22343 | gdb_assert (cu->per_cu != NULL); |
22344 | ||
98bfdba5 PA |
22345 | target_cu = cu; |
22346 | ||
3019eac3 | 22347 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22348 | { |
22349 | /* .debug_types CUs cannot reference anything outside their CU. | |
22350 | If they need to, they have to reference a signatured type via | |
55f1336d | 22351 | DW_FORM_ref_sig8. */ |
4057dfde | 22352 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 22353 | return NULL; |
348e048f | 22354 | } |
36586728 | 22355 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 22356 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
22357 | { |
22358 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22359 | |
9c541725 | 22360 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 22361 | per_objfile); |
03dd20cc DJ |
22362 | |
22363 | /* If necessary, add it to the queue and load its DIEs. */ | |
976ca316 SM |
22364 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
22365 | load_full_comp_unit (per_cu, per_objfile, false, cu->language); | |
03dd20cc | 22366 | |
976ca316 | 22367 | target_cu = per_objfile->get_cu (per_cu); |
10b3939b | 22368 | } |
98bfdba5 PA |
22369 | else if (cu->dies == NULL) |
22370 | { | |
22371 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 SM |
22372 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
22373 | load_full_comp_unit (cu->per_cu, per_objfile, false, language_minimal); | |
98bfdba5 | 22374 | } |
c906108c | 22375 | |
f2f0e013 | 22376 | *ref_cu = target_cu; |
9c541725 | 22377 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22378 | |
22379 | if (target_cu != cu) | |
22380 | target_cu->ancestor = cu; | |
22381 | ||
9a3c8263 | 22382 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22383 | &temp_die, |
22384 | to_underlying (sect_off)); | |
5c631832 | 22385 | } |
10b3939b | 22386 | |
5c631832 JK |
22387 | /* Follow reference attribute ATTR of SRC_DIE. |
22388 | On entry *REF_CU is the CU of SRC_DIE. | |
22389 | On exit *REF_CU is the CU of the result. */ | |
22390 | ||
22391 | static struct die_info * | |
ff39bb5e | 22392 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22393 | struct dwarf2_cu **ref_cu) |
22394 | { | |
0826b30a | 22395 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
22396 | struct dwarf2_cu *cu = *ref_cu; |
22397 | struct die_info *die; | |
22398 | ||
9c541725 | 22399 | die = follow_die_offset (sect_off, |
36586728 TT |
22400 | (attr->form == DW_FORM_GNU_ref_alt |
22401 | || cu->per_cu->is_dwz), | |
22402 | ref_cu); | |
5c631832 | 22403 | if (!die) |
9d8780f0 SM |
22404 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22405 | "at %s [in module %s]"), | |
22406 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22407 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 22408 | |
5c631832 JK |
22409 | return die; |
22410 | } | |
22411 | ||
d4c9a4f8 | 22412 | /* See read.h. */ |
5c631832 JK |
22413 | |
22414 | struct dwarf2_locexpr_baton | |
9c541725 | 22415 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22416 | dwarf2_per_cu_data *per_cu, |
976ca316 | 22417 | dwarf2_per_objfile *per_objfile, |
8b9737bf | 22418 | CORE_ADDR (*get_frame_pc) (void *baton), |
e4a62c65 | 22419 | void *baton, bool resolve_abstract_p) |
5c631832 | 22420 | { |
5c631832 JK |
22421 | struct die_info *die; |
22422 | struct attribute *attr; | |
22423 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 22424 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 22425 | |
976ca316 | 22426 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 22427 | if (cu == nullptr) |
976ca316 | 22428 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
22429 | |
22430 | if (cu == nullptr) | |
cc12ce38 DE |
22431 | { |
22432 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22433 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22434 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22435 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22436 | } |
918dd910 | 22437 | |
9c541725 | 22438 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22439 | if (!die) |
9d8780f0 SM |
22440 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22441 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
22442 | |
22443 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 22444 | if (!attr && resolve_abstract_p |
976ca316 SM |
22445 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
22446 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 TV |
22447 | { |
22448 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 22449 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 22450 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 22451 | |
3360b6e7 | 22452 | for (const auto &cand_off |
976ca316 | 22453 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 22454 | { |
3360b6e7 TV |
22455 | struct dwarf2_cu *cand_cu = cu; |
22456 | struct die_info *cand | |
22457 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
22458 | if (!cand | |
22459 | || !cand->parent | |
e4a62c65 TV |
22460 | || cand->parent->tag != DW_TAG_subprogram) |
22461 | continue; | |
22462 | ||
22463 | CORE_ADDR pc_low, pc_high; | |
22464 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
22465 | if (pc_low == ((CORE_ADDR) -1)) |
22466 | continue; | |
22467 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
22468 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
22469 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
22470 | continue; |
22471 | ||
22472 | die = cand; | |
22473 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22474 | break; | |
22475 | } | |
22476 | } | |
22477 | ||
5c631832 JK |
22478 | if (!attr) |
22479 | { | |
e103e986 JK |
22480 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22481 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22482 | |
e103e986 | 22483 | retval.data = NULL; |
5c631832 JK |
22484 | retval.size = 0; |
22485 | } | |
cd6c91b4 | 22486 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
22487 | { |
22488 | struct dwarf2_loclist_baton loclist_baton; | |
22489 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
22490 | size_t size; | |
22491 | ||
22492 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
22493 | ||
22494 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
22495 | &size, pc); | |
22496 | retval.size = size; | |
22497 | } | |
5c631832 JK |
22498 | else |
22499 | { | |
4fc6c0d5 | 22500 | if (!attr->form_is_block ()) |
9d8780f0 | 22501 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 22502 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 22503 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
22504 | |
22505 | retval.data = DW_BLOCK (attr)->data; | |
22506 | retval.size = DW_BLOCK (attr)->size; | |
22507 | } | |
976ca316 | 22508 | retval.per_objfile = per_objfile; |
5c631832 | 22509 | retval.per_cu = cu->per_cu; |
918dd910 | 22510 | |
976ca316 | 22511 | per_objfile->age_comp_units (); |
918dd910 | 22512 | |
5c631832 | 22513 | return retval; |
348e048f DE |
22514 | } |
22515 | ||
d4c9a4f8 | 22516 | /* See read.h. */ |
8b9737bf TT |
22517 | |
22518 | struct dwarf2_locexpr_baton | |
22519 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 22520 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22521 | dwarf2_per_objfile *per_objfile, |
8b9737bf TT |
22522 | CORE_ADDR (*get_frame_pc) (void *baton), |
22523 | void *baton) | |
22524 | { | |
9c541725 | 22525 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 22526 | |
14095eb3 SM |
22527 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
22528 | get_frame_pc, baton); | |
8b9737bf TT |
22529 | } |
22530 | ||
b6807d98 TT |
22531 | /* Write a constant of a given type as target-ordered bytes into |
22532 | OBSTACK. */ | |
22533 | ||
22534 | static const gdb_byte * | |
22535 | write_constant_as_bytes (struct obstack *obstack, | |
22536 | enum bfd_endian byte_order, | |
22537 | struct type *type, | |
22538 | ULONGEST value, | |
22539 | LONGEST *len) | |
22540 | { | |
22541 | gdb_byte *result; | |
22542 | ||
22543 | *len = TYPE_LENGTH (type); | |
224c3ddb | 22544 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22545 | store_unsigned_integer (result, *len, byte_order, value); |
22546 | ||
22547 | return result; | |
22548 | } | |
22549 | ||
d4c9a4f8 | 22550 | /* See read.h. */ |
b6807d98 TT |
22551 | |
22552 | const gdb_byte * | |
9c541725 | 22553 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 22554 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22555 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 22556 | obstack *obstack, |
b6807d98 TT |
22557 | LONGEST *len) |
22558 | { | |
b6807d98 TT |
22559 | struct die_info *die; |
22560 | struct attribute *attr; | |
22561 | const gdb_byte *result = NULL; | |
22562 | struct type *type; | |
22563 | LONGEST value; | |
22564 | enum bfd_endian byte_order; | |
14095eb3 | 22565 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 22566 | |
7188ed02 | 22567 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
22568 | if (cu == nullptr) |
22569 | cu = load_cu (per_cu, per_objfile, false); | |
22570 | ||
22571 | if (cu == nullptr) | |
cc12ce38 DE |
22572 | { |
22573 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22574 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22575 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22576 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22577 | } |
b6807d98 | 22578 | |
9c541725 | 22579 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 22580 | if (!die) |
9d8780f0 SM |
22581 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22582 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
22583 | |
22584 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
22585 | if (attr == NULL) | |
22586 | return NULL; | |
22587 | ||
e3b94546 | 22588 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
22589 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
22590 | ||
22591 | switch (attr->form) | |
22592 | { | |
22593 | case DW_FORM_addr: | |
336d760d | 22594 | case DW_FORM_addrx: |
b6807d98 TT |
22595 | case DW_FORM_GNU_addr_index: |
22596 | { | |
22597 | gdb_byte *tem; | |
22598 | ||
22599 | *len = cu->header.addr_size; | |
224c3ddb | 22600 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22601 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
22602 | result = tem; | |
22603 | } | |
22604 | break; | |
22605 | case DW_FORM_string: | |
22606 | case DW_FORM_strp: | |
cf532bd1 | 22607 | case DW_FORM_strx: |
b6807d98 TT |
22608 | case DW_FORM_GNU_str_index: |
22609 | case DW_FORM_GNU_strp_alt: | |
22610 | /* DW_STRING is already allocated on the objfile obstack, point | |
22611 | directly to it. */ | |
22612 | result = (const gdb_byte *) DW_STRING (attr); | |
22613 | *len = strlen (DW_STRING (attr)); | |
22614 | break; | |
22615 | case DW_FORM_block1: | |
22616 | case DW_FORM_block2: | |
22617 | case DW_FORM_block4: | |
22618 | case DW_FORM_block: | |
22619 | case DW_FORM_exprloc: | |
0224619f | 22620 | case DW_FORM_data16: |
b6807d98 TT |
22621 | result = DW_BLOCK (attr)->data; |
22622 | *len = DW_BLOCK (attr)->size; | |
22623 | break; | |
22624 | ||
22625 | /* The DW_AT_const_value attributes are supposed to carry the | |
22626 | symbol's value "represented as it would be on the target | |
22627 | architecture." By the time we get here, it's already been | |
22628 | converted to host endianness, so we just need to sign- or | |
22629 | zero-extend it as appropriate. */ | |
22630 | case DW_FORM_data1: | |
22631 | type = die_type (die, cu); | |
22632 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
22633 | if (result == NULL) | |
22634 | result = write_constant_as_bytes (obstack, byte_order, | |
22635 | type, value, len); | |
22636 | break; | |
22637 | case DW_FORM_data2: | |
22638 | type = die_type (die, cu); | |
22639 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
22640 | if (result == NULL) | |
22641 | result = write_constant_as_bytes (obstack, byte_order, | |
22642 | type, value, len); | |
22643 | break; | |
22644 | case DW_FORM_data4: | |
22645 | type = die_type (die, cu); | |
22646 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
22647 | if (result == NULL) | |
22648 | result = write_constant_as_bytes (obstack, byte_order, | |
22649 | type, value, len); | |
22650 | break; | |
22651 | case DW_FORM_data8: | |
22652 | type = die_type (die, cu); | |
22653 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
22654 | if (result == NULL) | |
22655 | result = write_constant_as_bytes (obstack, byte_order, | |
22656 | type, value, len); | |
22657 | break; | |
22658 | ||
22659 | case DW_FORM_sdata: | |
663c44ac | 22660 | case DW_FORM_implicit_const: |
b6807d98 TT |
22661 | type = die_type (die, cu); |
22662 | result = write_constant_as_bytes (obstack, byte_order, | |
22663 | type, DW_SND (attr), len); | |
22664 | break; | |
22665 | ||
22666 | case DW_FORM_udata: | |
22667 | type = die_type (die, cu); | |
22668 | result = write_constant_as_bytes (obstack, byte_order, | |
22669 | type, DW_UNSND (attr), len); | |
22670 | break; | |
22671 | ||
22672 | default: | |
b98664d3 | 22673 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
22674 | dwarf_form_name (attr->form)); |
22675 | break; | |
22676 | } | |
22677 | ||
22678 | return result; | |
22679 | } | |
22680 | ||
d4c9a4f8 | 22681 | /* See read.h. */ |
7942e96e AA |
22682 | |
22683 | struct type * | |
9c541725 | 22684 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
22685 | dwarf2_per_cu_data *per_cu, |
22686 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 22687 | { |
7942e96e AA |
22688 | struct die_info *die; |
22689 | ||
7188ed02 | 22690 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
22691 | if (cu == nullptr) |
22692 | cu = load_cu (per_cu, per_objfile, false); | |
22693 | ||
22694 | if (cu == nullptr) | |
22695 | return nullptr; | |
7942e96e | 22696 | |
9c541725 | 22697 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
22698 | if (!die) |
22699 | return NULL; | |
22700 | ||
22701 | return die_type (die, cu); | |
22702 | } | |
22703 | ||
8cb5117c | 22704 | /* See read.h. */ |
8a9b8146 TT |
22705 | |
22706 | struct type * | |
b64f50a1 | 22707 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
22708 | dwarf2_per_cu_data *per_cu, |
22709 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 22710 | { |
9c541725 | 22711 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 22712 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
22713 | } |
22714 | ||
ac9ec31b | 22715 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 22716 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
22717 | On exit *REF_CU is the CU of the result. |
22718 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
22719 | |
22720 | static struct die_info * | |
ac9ec31b DE |
22721 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
22722 | struct dwarf2_cu **ref_cu) | |
348e048f | 22723 | { |
348e048f | 22724 | struct die_info temp_die; |
c24bdb02 | 22725 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 22726 | struct die_info *die; |
976ca316 | 22727 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 22728 | |
348e048f | 22729 | |
ac9ec31b DE |
22730 | /* While it might be nice to assert sig_type->type == NULL here, |
22731 | we can get here for DW_AT_imported_declaration where we need | |
22732 | the DIE not the type. */ | |
348e048f DE |
22733 | |
22734 | /* If necessary, add it to the queue and load its DIEs. */ | |
22735 | ||
976ca316 | 22736 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, per_objfile, |
120ce1b5 | 22737 | language_minimal)) |
976ca316 | 22738 | read_signatured_type (sig_type, per_objfile); |
348e048f | 22739 | |
976ca316 | 22740 | sig_cu = per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 22741 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
22742 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
22743 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 22744 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 22745 | to_underlying (temp_die.sect_off)); |
348e048f DE |
22746 | if (die) |
22747 | { | |
796a7ff8 DE |
22748 | /* For .gdb_index version 7 keep track of included TUs. |
22749 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
22750 | if (per_objfile->per_bfd->index_table != NULL |
22751 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 22752 | { |
ae640021 | 22753 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
22754 | } |
22755 | ||
348e048f | 22756 | *ref_cu = sig_cu; |
c24bdb02 KS |
22757 | if (sig_cu != cu) |
22758 | sig_cu->ancestor = cu; | |
22759 | ||
348e048f DE |
22760 | return die; |
22761 | } | |
22762 | ||
ac9ec31b DE |
22763 | return NULL; |
22764 | } | |
22765 | ||
22766 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
22767 | On entry *REF_CU is the CU of SRC_DIE. | |
22768 | On exit *REF_CU is the CU of the result. | |
22769 | The result is the DIE of the type. | |
22770 | If the referenced type cannot be found an error is thrown. */ | |
22771 | ||
22772 | static struct die_info * | |
ff39bb5e | 22773 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
22774 | struct dwarf2_cu **ref_cu) |
22775 | { | |
22776 | ULONGEST signature = DW_SIGNATURE (attr); | |
22777 | struct signatured_type *sig_type; | |
22778 | struct die_info *die; | |
22779 | ||
22780 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
22781 | ||
a2ce51a0 | 22782 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
22783 | /* sig_type will be NULL if the signatured type is missing from |
22784 | the debug info. */ | |
22785 | if (sig_type == NULL) | |
22786 | { | |
22787 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
22788 | " from DIE at %s [in module %s]"), |
22789 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22790 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22791 | } |
22792 | ||
22793 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
22794 | if (die == NULL) | |
22795 | { | |
22796 | dump_die_for_error (src_die); | |
22797 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
22798 | " from DIE at %s [in module %s]"), |
22799 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22800 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22801 | } |
22802 | ||
22803 | return die; | |
22804 | } | |
22805 | ||
22806 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
22807 | reading in and processing the type unit if necessary. */ | |
22808 | ||
22809 | static struct type * | |
22810 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
22811 | struct dwarf2_cu *cu) | |
22812 | { | |
976ca316 | 22813 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
22814 | struct signatured_type *sig_type; |
22815 | struct dwarf2_cu *type_cu; | |
22816 | struct die_info *type_die; | |
22817 | struct type *type; | |
22818 | ||
a2ce51a0 | 22819 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
22820 | /* sig_type will be NULL if the signatured type is missing from |
22821 | the debug info. */ | |
22822 | if (sig_type == NULL) | |
22823 | { | |
b98664d3 | 22824 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
22825 | " from DIE at %s [in module %s]"), |
22826 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 22827 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
22828 | return build_error_marker_type (cu, die); |
22829 | } | |
22830 | ||
22831 | /* If we already know the type we're done. */ | |
976ca316 | 22832 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
22833 | if (type != nullptr) |
22834 | return type; | |
ac9ec31b DE |
22835 | |
22836 | type_cu = cu; | |
22837 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
22838 | if (type_die != NULL) | |
22839 | { | |
22840 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
22841 | is created. This is important, for example, because for c++ classes | |
22842 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
22843 | type = read_type_die (type_die, type_cu); | |
22844 | if (type == NULL) | |
22845 | { | |
b98664d3 | 22846 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
22847 | " referenced from DIE at %s [in module %s]"), |
22848 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 22849 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
22850 | type = build_error_marker_type (cu, die); |
22851 | } | |
22852 | } | |
22853 | else | |
22854 | { | |
b98664d3 | 22855 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
22856 | " from DIE at %s [in module %s]"), |
22857 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 22858 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
22859 | type = build_error_marker_type (cu, die); |
22860 | } | |
e286671b | 22861 | |
976ca316 | 22862 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
22863 | |
22864 | return type; | |
22865 | } | |
22866 | ||
22867 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
22868 | reading in and processing the type unit if necessary. */ | |
22869 | ||
22870 | static struct type * | |
ff39bb5e | 22871 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 22872 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
22873 | { |
22874 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 22875 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22876 | { |
22877 | struct dwarf2_cu *type_cu = cu; | |
22878 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
22879 | ||
22880 | return read_type_die (type_die, type_cu); | |
22881 | } | |
22882 | else if (attr->form == DW_FORM_ref_sig8) | |
22883 | { | |
22884 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
22885 | } | |
22886 | else | |
22887 | { | |
976ca316 | 22888 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 22889 | |
b98664d3 | 22890 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
22891 | " at %s [in module %s]"), |
22892 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 22893 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
22894 | return build_error_marker_type (cu, die); |
22895 | } | |
348e048f DE |
22896 | } |
22897 | ||
e5fe5e75 | 22898 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
22899 | |
22900 | static void | |
ab432490 SM |
22901 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
22902 | dwarf2_per_objfile *per_objfile) | |
348e048f | 22903 | { |
52dc124a | 22904 | struct signatured_type *sig_type; |
348e048f | 22905 | |
f4dc4d17 | 22906 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 22907 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 22908 | |
6721b2ec DE |
22909 | /* We have the per_cu, but we need the signatured_type. |
22910 | Fortunately this is an easy translation. */ | |
22911 | gdb_assert (per_cu->is_debug_types); | |
22912 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 22913 | |
7188ed02 | 22914 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 22915 | |
ab432490 | 22916 | read_signatured_type (sig_type, per_objfile); |
348e048f | 22917 | |
7188ed02 | 22918 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
22919 | } |
22920 | ||
3019eac3 DE |
22921 | /* Read in a signatured type and build its CU and DIEs. |
22922 | If the type is a stub for the real type in a DWO file, | |
22923 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
22924 | |
22925 | static void | |
ab432490 SM |
22926 | read_signatured_type (signatured_type *sig_type, |
22927 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
22928 | { |
22929 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 22930 | |
3019eac3 | 22931 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 22932 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 22933 | |
2e671100 | 22934 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
22935 | |
22936 | if (!reader.dummy_p) | |
22937 | { | |
22938 | struct dwarf2_cu *cu = reader.cu; | |
22939 | const gdb_byte *info_ptr = reader.info_ptr; | |
22940 | ||
22941 | gdb_assert (cu->die_hash == NULL); | |
22942 | cu->die_hash = | |
22943 | htab_create_alloc_ex (cu->header.length / 12, | |
22944 | die_hash, | |
22945 | die_eq, | |
22946 | NULL, | |
22947 | &cu->comp_unit_obstack, | |
22948 | hashtab_obstack_allocate, | |
22949 | dummy_obstack_deallocate); | |
22950 | ||
3e225074 | 22951 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
22952 | reader.comp_unit_die->child |
22953 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
22954 | reader.comp_unit_die); | |
22955 | cu->dies = reader.comp_unit_die; | |
22956 | /* comp_unit_die is not stored in die_hash, no need. */ | |
22957 | ||
22958 | /* We try not to read any attributes in this function, because | |
22959 | not all CUs needed for references have been loaded yet, and | |
22960 | symbol table processing isn't initialized. But we have to | |
22961 | set the CU language, or we won't be able to build types | |
22962 | correctly. Similarly, if we do not read the producer, we can | |
22963 | not apply producer-specific interpretation. */ | |
22964 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
22965 | |
22966 | reader.keep (); | |
c0ab21c2 TT |
22967 | } |
22968 | ||
7ee85ab1 | 22969 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
22970 | } |
22971 | ||
c906108c SS |
22972 | /* Decode simple location descriptions. |
22973 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
22974 | the location and return the value. If COMPUTED is non-null, it is |
22975 | set to true to indicate that decoding was successful, and false | |
22976 | otherwise. If COMPUTED is null, then this function may emit a | |
22977 | complaint. */ | |
c906108c SS |
22978 | |
22979 | static CORE_ADDR | |
7d79de9a | 22980 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 22981 | { |
5e22e966 | 22982 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
22983 | size_t i; |
22984 | size_t size = blk->size; | |
d521ce57 | 22985 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
22986 | CORE_ADDR stack[64]; |
22987 | int stacki; | |
22988 | unsigned int bytes_read, unsnd; | |
22989 | gdb_byte op; | |
c906108c | 22990 | |
7d79de9a TT |
22991 | if (computed != nullptr) |
22992 | *computed = false; | |
22993 | ||
21ae7a4d JK |
22994 | i = 0; |
22995 | stacki = 0; | |
22996 | stack[stacki] = 0; | |
22997 | stack[++stacki] = 0; | |
22998 | ||
22999 | while (i < size) | |
23000 | { | |
23001 | op = data[i++]; | |
23002 | switch (op) | |
23003 | { | |
23004 | case DW_OP_lit0: | |
23005 | case DW_OP_lit1: | |
23006 | case DW_OP_lit2: | |
23007 | case DW_OP_lit3: | |
23008 | case DW_OP_lit4: | |
23009 | case DW_OP_lit5: | |
23010 | case DW_OP_lit6: | |
23011 | case DW_OP_lit7: | |
23012 | case DW_OP_lit8: | |
23013 | case DW_OP_lit9: | |
23014 | case DW_OP_lit10: | |
23015 | case DW_OP_lit11: | |
23016 | case DW_OP_lit12: | |
23017 | case DW_OP_lit13: | |
23018 | case DW_OP_lit14: | |
23019 | case DW_OP_lit15: | |
23020 | case DW_OP_lit16: | |
23021 | case DW_OP_lit17: | |
23022 | case DW_OP_lit18: | |
23023 | case DW_OP_lit19: | |
23024 | case DW_OP_lit20: | |
23025 | case DW_OP_lit21: | |
23026 | case DW_OP_lit22: | |
23027 | case DW_OP_lit23: | |
23028 | case DW_OP_lit24: | |
23029 | case DW_OP_lit25: | |
23030 | case DW_OP_lit26: | |
23031 | case DW_OP_lit27: | |
23032 | case DW_OP_lit28: | |
23033 | case DW_OP_lit29: | |
23034 | case DW_OP_lit30: | |
23035 | case DW_OP_lit31: | |
23036 | stack[++stacki] = op - DW_OP_lit0; | |
23037 | break; | |
f1bea926 | 23038 | |
21ae7a4d JK |
23039 | case DW_OP_reg0: |
23040 | case DW_OP_reg1: | |
23041 | case DW_OP_reg2: | |
23042 | case DW_OP_reg3: | |
23043 | case DW_OP_reg4: | |
23044 | case DW_OP_reg5: | |
23045 | case DW_OP_reg6: | |
23046 | case DW_OP_reg7: | |
23047 | case DW_OP_reg8: | |
23048 | case DW_OP_reg9: | |
23049 | case DW_OP_reg10: | |
23050 | case DW_OP_reg11: | |
23051 | case DW_OP_reg12: | |
23052 | case DW_OP_reg13: | |
23053 | case DW_OP_reg14: | |
23054 | case DW_OP_reg15: | |
23055 | case DW_OP_reg16: | |
23056 | case DW_OP_reg17: | |
23057 | case DW_OP_reg18: | |
23058 | case DW_OP_reg19: | |
23059 | case DW_OP_reg20: | |
23060 | case DW_OP_reg21: | |
23061 | case DW_OP_reg22: | |
23062 | case DW_OP_reg23: | |
23063 | case DW_OP_reg24: | |
23064 | case DW_OP_reg25: | |
23065 | case DW_OP_reg26: | |
23066 | case DW_OP_reg27: | |
23067 | case DW_OP_reg28: | |
23068 | case DW_OP_reg29: | |
23069 | case DW_OP_reg30: | |
23070 | case DW_OP_reg31: | |
23071 | stack[++stacki] = op - DW_OP_reg0; | |
23072 | if (i < size) | |
7d79de9a TT |
23073 | { |
23074 | if (computed == nullptr) | |
23075 | dwarf2_complex_location_expr_complaint (); | |
23076 | else | |
23077 | return 0; | |
23078 | } | |
21ae7a4d | 23079 | break; |
c906108c | 23080 | |
21ae7a4d JK |
23081 | case DW_OP_regx: |
23082 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23083 | i += bytes_read; | |
23084 | stack[++stacki] = unsnd; | |
23085 | if (i < size) | |
7d79de9a TT |
23086 | { |
23087 | if (computed == nullptr) | |
23088 | dwarf2_complex_location_expr_complaint (); | |
23089 | else | |
23090 | return 0; | |
23091 | } | |
21ae7a4d | 23092 | break; |
c906108c | 23093 | |
21ae7a4d | 23094 | case DW_OP_addr: |
c8a7a66f TT |
23095 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
23096 | &bytes_read); | |
21ae7a4d JK |
23097 | i += bytes_read; |
23098 | break; | |
d53d4ac5 | 23099 | |
21ae7a4d JK |
23100 | case DW_OP_const1u: |
23101 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23102 | i += 1; | |
23103 | break; | |
23104 | ||
23105 | case DW_OP_const1s: | |
23106 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23107 | i += 1; | |
23108 | break; | |
23109 | ||
23110 | case DW_OP_const2u: | |
23111 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23112 | i += 2; | |
23113 | break; | |
23114 | ||
23115 | case DW_OP_const2s: | |
23116 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23117 | i += 2; | |
23118 | break; | |
d53d4ac5 | 23119 | |
21ae7a4d JK |
23120 | case DW_OP_const4u: |
23121 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23122 | i += 4; | |
23123 | break; | |
23124 | ||
23125 | case DW_OP_const4s: | |
23126 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23127 | i += 4; | |
23128 | break; | |
23129 | ||
585861ea JK |
23130 | case DW_OP_const8u: |
23131 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23132 | i += 8; | |
23133 | break; | |
23134 | ||
21ae7a4d JK |
23135 | case DW_OP_constu: |
23136 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23137 | &bytes_read); | |
23138 | i += bytes_read; | |
23139 | break; | |
23140 | ||
23141 | case DW_OP_consts: | |
23142 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23143 | i += bytes_read; | |
23144 | break; | |
23145 | ||
23146 | case DW_OP_dup: | |
23147 | stack[stacki + 1] = stack[stacki]; | |
23148 | stacki++; | |
23149 | break; | |
23150 | ||
23151 | case DW_OP_plus: | |
23152 | stack[stacki - 1] += stack[stacki]; | |
23153 | stacki--; | |
23154 | break; | |
23155 | ||
23156 | case DW_OP_plus_uconst: | |
23157 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23158 | &bytes_read); | |
23159 | i += bytes_read; | |
23160 | break; | |
23161 | ||
23162 | case DW_OP_minus: | |
23163 | stack[stacki - 1] -= stack[stacki]; | |
23164 | stacki--; | |
23165 | break; | |
23166 | ||
23167 | case DW_OP_deref: | |
23168 | /* If we're not the last op, then we definitely can't encode | |
23169 | this using GDB's address_class enum. This is valid for partial | |
23170 | global symbols, although the variable's address will be bogus | |
23171 | in the psymtab. */ | |
23172 | if (i < size) | |
7d79de9a TT |
23173 | { |
23174 | if (computed == nullptr) | |
23175 | dwarf2_complex_location_expr_complaint (); | |
23176 | else | |
23177 | return 0; | |
23178 | } | |
21ae7a4d JK |
23179 | break; |
23180 | ||
23181 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23182 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23183 | /* The top of the stack has the offset from the beginning |
23184 | of the thread control block at which the variable is located. */ | |
23185 | /* Nothing should follow this operator, so the top of stack would | |
23186 | be returned. */ | |
23187 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23188 | address will be bogus in the psymtab. Make it always at least |
23189 | non-zero to not look as a variable garbage collected by linker | |
23190 | which have DW_OP_addr 0. */ | |
21ae7a4d | 23191 | if (i < size) |
7d79de9a TT |
23192 | { |
23193 | if (computed == nullptr) | |
23194 | dwarf2_complex_location_expr_complaint (); | |
23195 | else | |
23196 | return 0; | |
23197 | } | |
585861ea | 23198 | stack[stacki]++; |
21ae7a4d JK |
23199 | break; |
23200 | ||
23201 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
23202 | if (computed != nullptr) |
23203 | return 0; | |
21ae7a4d JK |
23204 | break; |
23205 | ||
336d760d | 23206 | case DW_OP_addrx: |
3019eac3 | 23207 | case DW_OP_GNU_addr_index: |
49f6c839 | 23208 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23209 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23210 | &bytes_read); | |
23211 | i += bytes_read; | |
23212 | break; | |
23213 | ||
21ae7a4d | 23214 | default: |
7d79de9a TT |
23215 | if (computed == nullptr) |
23216 | { | |
23217 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 23218 | |
7d79de9a TT |
23219 | if (name) |
23220 | complaint (_("unsupported stack op: '%s'"), | |
23221 | name); | |
23222 | else | |
23223 | complaint (_("unsupported stack op: '%02x'"), | |
23224 | op); | |
23225 | } | |
21ae7a4d JK |
23226 | |
23227 | return (stack[stacki]); | |
d53d4ac5 | 23228 | } |
3c6e0cb3 | 23229 | |
21ae7a4d JK |
23230 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23231 | outside of the allocated space. Also enforce minimum>0. */ | |
23232 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23233 | { | |
7d79de9a TT |
23234 | if (computed == nullptr) |
23235 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
23236 | return 0; |
23237 | } | |
23238 | ||
23239 | if (stacki <= 0) | |
23240 | { | |
7d79de9a TT |
23241 | if (computed == nullptr) |
23242 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
23243 | return 0; |
23244 | } | |
23245 | } | |
7d79de9a TT |
23246 | |
23247 | if (computed != nullptr) | |
23248 | *computed = true; | |
21ae7a4d | 23249 | return (stack[stacki]); |
c906108c SS |
23250 | } |
23251 | ||
23252 | /* memory allocation interface */ | |
23253 | ||
c906108c | 23254 | static struct dwarf_block * |
7b5a2f43 | 23255 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23256 | { |
8d749320 | 23257 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23258 | } |
23259 | ||
c906108c | 23260 | static struct die_info * |
b60c80d6 | 23261 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23262 | { |
23263 | struct die_info *die; | |
b60c80d6 DJ |
23264 | size_t size = sizeof (struct die_info); |
23265 | ||
23266 | if (num_attrs > 1) | |
23267 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23268 | |
b60c80d6 | 23269 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23270 | memset (die, 0, sizeof (struct die_info)); |
23271 | return (die); | |
23272 | } | |
2e276125 JB |
23273 | |
23274 | \f | |
a036ba48 | 23275 | |
c90ec28a | 23276 | /* Macro support. */ |
cf2c3c16 | 23277 | |
9eac9650 TT |
23278 | /* An overload of dwarf_decode_macros that finds the correct section |
23279 | and ensures it is read in before calling the other overload. */ | |
23280 | ||
23281 | static void | |
23282 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
23283 | int section_is_gnu) | |
23284 | { | |
976ca316 SM |
23285 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
23286 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 23287 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
23288 | unsigned int offset_size = cu->header.offset_size; |
23289 | struct dwarf2_section_info *section; | |
23290 | const char *section_name; | |
23291 | ||
23292 | if (cu->dwo_unit != nullptr) | |
23293 | { | |
23294 | if (section_is_gnu) | |
23295 | { | |
23296 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
23297 | section_name = ".debug_macro.dwo"; | |
23298 | } | |
23299 | else | |
23300 | { | |
23301 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
23302 | section_name = ".debug_macinfo.dwo"; | |
23303 | } | |
23304 | } | |
23305 | else | |
23306 | { | |
23307 | if (section_is_gnu) | |
23308 | { | |
976ca316 | 23309 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
23310 | section_name = ".debug_macro"; |
23311 | } | |
23312 | else | |
23313 | { | |
976ca316 | 23314 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
23315 | section_name = ".debug_macinfo"; |
23316 | } | |
23317 | } | |
23318 | ||
23319 | section->read (objfile); | |
23320 | if (section->buffer == nullptr) | |
23321 | { | |
23322 | complaint (_("missing %s section"), section_name); | |
23323 | return; | |
23324 | } | |
23325 | ||
23326 | buildsym_compunit *builder = cu->get_builder (); | |
23327 | ||
976ca316 | 23328 | dwarf_decode_macros (per_objfile, builder, section, lh, |
9eac9650 TT |
23329 | offset_size, offset, section_is_gnu); |
23330 | } | |
23331 | ||
3019eac3 DE |
23332 | /* Return the .debug_loc section to use for CU. |
23333 | For DWO files use .debug_loc.dwo. */ | |
23334 | ||
23335 | static struct dwarf2_section_info * | |
23336 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
23337 | { | |
976ca316 | 23338 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 23339 | |
3019eac3 | 23340 | if (cu->dwo_unit) |
43988095 JK |
23341 | { |
23342 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 23343 | |
43988095 JK |
23344 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
23345 | } | |
976ca316 SM |
23346 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
23347 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
23348 | } |
23349 | ||
8cf6f0b1 TT |
23350 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
23351 | ||
23352 | static void | |
23353 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
23354 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 23355 | const struct attribute *attr) |
8cf6f0b1 | 23356 | { |
976ca316 | 23357 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
23358 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
23359 | ||
976ca316 | 23360 | section->read (per_objfile->objfile); |
8cf6f0b1 | 23361 | |
976ca316 | 23362 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
23363 | baton->per_cu = cu->per_cu; |
23364 | gdb_assert (baton->per_cu); | |
23365 | /* We don't know how long the location list is, but make sure we | |
23366 | don't run off the edge of the section. */ | |
3019eac3 DE |
23367 | baton->size = section->size - DW_UNSND (attr); |
23368 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
23369 | if (cu->base_address.has_value ()) |
23370 | baton->base_address = *cu->base_address; | |
23371 | else | |
23372 | baton->base_address = 0; | |
f664829e | 23373 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
23374 | } |
23375 | ||
4c2df51b | 23376 | static void |
ff39bb5e | 23377 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 23378 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 23379 | { |
976ca316 SM |
23380 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
23381 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 23382 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 23383 | |
cd6c91b4 | 23384 | if (attr->form_is_section_offset () |
3019eac3 | 23385 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
23386 | the section. If so, fall through to the complaint in the |
23387 | other branch. */ | |
2c7d5afc | 23388 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 23389 | { |
0d53c4c4 | 23390 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 23391 | |
8d749320 | 23392 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 23393 | |
8cf6f0b1 | 23394 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 23395 | |
2b24b6e4 | 23396 | if (!cu->base_address.has_value ()) |
b98664d3 | 23397 | complaint (_("Location list used without " |
3e43a32a | 23398 | "specifying the CU base address.")); |
4c2df51b | 23399 | |
f1e6e072 TT |
23400 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23401 | ? dwarf2_loclist_block_index | |
23402 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
23403 | SYMBOL_LOCATION_BATON (sym) = baton; |
23404 | } | |
23405 | else | |
23406 | { | |
23407 | struct dwarf2_locexpr_baton *baton; | |
23408 | ||
8d749320 | 23409 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 23410 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
23411 | baton->per_cu = cu->per_cu; |
23412 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 23413 | |
4fc6c0d5 | 23414 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
23415 | { |
23416 | /* Note that we're just copying the block's data pointer | |
23417 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
23418 | info_buffer for SYM's objfile; right now we never release |
23419 | that buffer, but when we do clean up properly this may | |
23420 | need to change. */ | |
0d53c4c4 DJ |
23421 | baton->size = DW_BLOCK (attr)->size; |
23422 | baton->data = DW_BLOCK (attr)->data; | |
23423 | } | |
23424 | else | |
23425 | { | |
23426 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 23427 | sym->natural_name ()); |
0d53c4c4 | 23428 | baton->size = 0; |
0d53c4c4 | 23429 | } |
6e70227d | 23430 | |
f1e6e072 TT |
23431 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23432 | ? dwarf2_locexpr_block_index | |
23433 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
23434 | SYMBOL_LOCATION_BATON (sym) = baton; |
23435 | } | |
4c2df51b | 23436 | } |
6502dd73 | 23437 | |
2e6a9f79 | 23438 | /* See read.h. */ |
96408a79 | 23439 | |
2e6a9f79 SM |
23440 | const comp_unit_head * |
23441 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 23442 | { |
2e6a9f79 SM |
23443 | if (!m_header_read_in) |
23444 | { | |
23445 | const gdb_byte *info_ptr | |
23446 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 23447 | |
2e6a9f79 | 23448 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 23449 | |
2e6a9f79 SM |
23450 | read_comp_unit_head (&m_header, info_ptr, this->section, |
23451 | rcuh_kind::COMPILE); | |
23452 | } | |
96408a79 | 23453 | |
2e6a9f79 | 23454 | return &m_header; |
96408a79 SA |
23455 | } |
23456 | ||
09ba997f | 23457 | /* See read.h. */ |
ae0d2f24 | 23458 | |
98714339 | 23459 | int |
09ba997f | 23460 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 23461 | { |
2e6a9f79 | 23462 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
23463 | } |
23464 | ||
09ba997f | 23465 | /* See read.h. */ |
9eae7c52 TT |
23466 | |
23467 | int | |
09ba997f | 23468 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 23469 | { |
2e6a9f79 | 23470 | return this->get_header ()->offset_size; |
96408a79 SA |
23471 | } |
23472 | ||
09ba997f | 23473 | /* See read.h. */ |
96408a79 SA |
23474 | |
23475 | int | |
09ba997f | 23476 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 23477 | { |
2e6a9f79 | 23478 | const comp_unit_head *header = this->get_header (); |
96408a79 | 23479 | |
2e6a9f79 SM |
23480 | if (header->version == 2) |
23481 | return header->addr_size; | |
96408a79 | 23482 | else |
2e6a9f79 | 23483 | return header->offset_size; |
181cebd4 JK |
23484 | } |
23485 | ||
09ba997f | 23486 | /* See read.h. */ |
9aa1f1e3 | 23487 | |
09ba997f | 23488 | struct type * |
293e7e51 | 23489 | dwarf2_cu::addr_type () const |
9a49df9d | 23490 | { |
293e7e51 | 23491 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
23492 | struct type *void_type = objfile_type (objfile)->builtin_void; |
23493 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 23494 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
23495 | |
23496 | if (TYPE_LENGTH (addr_type) == addr_size) | |
23497 | return addr_type; | |
23498 | ||
09ba997f | 23499 | addr_type = addr_sized_int_type (TYPE_UNSIGNED (addr_type)); |
9a49df9d AB |
23500 | return addr_type; |
23501 | } | |
23502 | ||
22b6cd70 TT |
23503 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
23504 | the index of the result, and that searches a vector. It will | |
23505 | return a result even if the offset in question does not actually | |
23506 | occur in any CU. This is separate so that it can be unit | |
23507 | tested. */ | |
ae038cb0 | 23508 | |
22b6cd70 TT |
23509 | static int |
23510 | dwarf2_find_containing_comp_unit | |
23511 | (sect_offset sect_off, | |
23512 | unsigned int offset_in_dwz, | |
23513 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 23514 | { |
ae038cb0 DJ |
23515 | int low, high; |
23516 | ||
ae038cb0 | 23517 | low = 0; |
22b6cd70 | 23518 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
23519 | while (high > low) |
23520 | { | |
36586728 | 23521 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 23522 | int mid = low + (high - low) / 2; |
9a619af0 | 23523 | |
22b6cd70 | 23524 | mid_cu = all_comp_units[mid]; |
36586728 | 23525 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 23526 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 23527 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
23528 | high = mid; |
23529 | else | |
23530 | low = mid + 1; | |
23531 | } | |
23532 | gdb_assert (low == high); | |
22b6cd70 TT |
23533 | return low; |
23534 | } | |
23535 | ||
23536 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
23537 | the DIE at OFFSET. Raises an error on failure. */ | |
23538 | ||
23539 | static struct dwarf2_per_cu_data * | |
23540 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
23541 | unsigned int offset_in_dwz, | |
976ca316 | 23542 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 23543 | { |
976ca316 SM |
23544 | int low = dwarf2_find_containing_comp_unit |
23545 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
23546 | dwarf2_per_cu_data *this_cu = per_objfile->per_bfd->all_comp_units[low]; | |
22b6cd70 | 23547 | |
45b8ae0c | 23548 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 23549 | { |
36586728 | 23550 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 23551 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
23552 | "offset %s [in module %s]"), |
23553 | sect_offset_str (sect_off), | |
976ca316 | 23554 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 23555 | |
976ca316 | 23556 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 23557 | <= sect_off); |
976ca316 | 23558 | return per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
23559 | } |
23560 | else | |
23561 | { | |
976ca316 | 23562 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 23563 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 23564 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 23565 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
23566 | return this_cu; |
23567 | } | |
23568 | } | |
23569 | ||
22b6cd70 TT |
23570 | #if GDB_SELF_TEST |
23571 | ||
23572 | namespace selftests { | |
23573 | namespace find_containing_comp_unit { | |
23574 | ||
23575 | static void | |
23576 | run_test () | |
23577 | { | |
23578 | struct dwarf2_per_cu_data one {}; | |
23579 | struct dwarf2_per_cu_data two {}; | |
23580 | struct dwarf2_per_cu_data three {}; | |
23581 | struct dwarf2_per_cu_data four {}; | |
23582 | ||
23583 | one.length = 5; | |
23584 | two.sect_off = sect_offset (one.length); | |
23585 | two.length = 7; | |
23586 | ||
23587 | three.length = 5; | |
23588 | three.is_dwz = 1; | |
23589 | four.sect_off = sect_offset (three.length); | |
23590 | four.length = 7; | |
23591 | four.is_dwz = 1; | |
23592 | ||
23593 | std::vector<dwarf2_per_cu_data *> units; | |
23594 | units.push_back (&one); | |
23595 | units.push_back (&two); | |
23596 | units.push_back (&three); | |
23597 | units.push_back (&four); | |
23598 | ||
23599 | int result; | |
23600 | ||
23601 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
23602 | SELF_CHECK (units[result] == &one); | |
23603 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
23604 | SELF_CHECK (units[result] == &one); | |
23605 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
23606 | SELF_CHECK (units[result] == &two); | |
23607 | ||
23608 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
23609 | SELF_CHECK (units[result] == &three); | |
23610 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
23611 | SELF_CHECK (units[result] == &three); | |
23612 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
23613 | SELF_CHECK (units[result] == &four); | |
23614 | } | |
23615 | ||
23616 | } | |
23617 | } | |
23618 | ||
23619 | #endif /* GDB_SELF_TEST */ | |
23620 | ||
9e021579 | 23621 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 23622 | |
9e021579 SM |
23623 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
23624 | dwarf2_per_objfile *per_objfile) | |
23625 | : per_cu (per_cu), | |
23626 | per_objfile (per_objfile), | |
9068261f AB |
23627 | mark (false), |
23628 | has_loclist (false), | |
23629 | checked_producer (false), | |
23630 | producer_is_gxx_lt_4_6 (false), | |
23631 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 23632 | producer_is_icc (false), |
9068261f | 23633 | producer_is_icc_lt_14 (false), |
c258c396 | 23634 | producer_is_codewarrior (false), |
9068261f | 23635 | processing_has_namespace_info (false) |
93311388 | 23636 | { |
9816fde3 JK |
23637 | } |
23638 | ||
23639 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
23640 | ||
23641 | static void | |
95554aad TT |
23642 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
23643 | enum language pretend_language) | |
9816fde3 JK |
23644 | { |
23645 | struct attribute *attr; | |
23646 | ||
23647 | /* Set the language we're debugging. */ | |
23648 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 23649 | if (attr != nullptr) |
9816fde3 JK |
23650 | set_cu_language (DW_UNSND (attr), cu); |
23651 | else | |
9cded63f | 23652 | { |
95554aad | 23653 | cu->language = pretend_language; |
9cded63f TT |
23654 | cu->language_defn = language_def (cu->language); |
23655 | } | |
dee91e82 | 23656 | |
7d45c7c3 | 23657 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
23658 | } |
23659 | ||
7188ed02 | 23660 | /* See read.h. */ |
ae038cb0 | 23661 | |
7188ed02 SM |
23662 | dwarf2_cu * |
23663 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 23664 | { |
7188ed02 SM |
23665 | auto it = m_dwarf2_cus.find (per_cu); |
23666 | if (it == m_dwarf2_cus.end ()) | |
23667 | return nullptr; | |
ae038cb0 | 23668 | |
7188ed02 SM |
23669 | return it->second; |
23670 | } | |
23671 | ||
23672 | /* See read.h. */ | |
23673 | ||
23674 | void | |
23675 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
23676 | { | |
23677 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
23678 | ||
23679 | m_dwarf2_cus[per_cu] = cu; | |
23680 | } | |
23681 | ||
23682 | /* See read.h. */ | |
23683 | ||
23684 | void | |
23685 | dwarf2_per_objfile::age_comp_units () | |
23686 | { | |
23687 | /* Start by clearing all marks. */ | |
23688 | for (auto pair : m_dwarf2_cus) | |
23689 | pair.second->mark = false; | |
23690 | ||
23691 | /* Traverse all CUs, mark them and their dependencies if used recently | |
23692 | enough. */ | |
23693 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 23694 | { |
7188ed02 SM |
23695 | dwarf2_cu *cu = pair.second; |
23696 | ||
23697 | cu->last_used++; | |
23698 | if (cu->last_used <= dwarf_max_cache_age) | |
23699 | dwarf2_mark (cu); | |
ae038cb0 DJ |
23700 | } |
23701 | ||
7188ed02 SM |
23702 | /* Delete all CUs still not marked. */ |
23703 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 23704 | { |
7188ed02 | 23705 | dwarf2_cu *cu = it->second; |
ae038cb0 | 23706 | |
7188ed02 | 23707 | if (!cu->mark) |
ae038cb0 | 23708 | { |
7188ed02 SM |
23709 | delete cu; |
23710 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
23711 | } |
23712 | else | |
7188ed02 | 23713 | it++; |
ae038cb0 DJ |
23714 | } |
23715 | } | |
23716 | ||
7188ed02 | 23717 | /* See read.h. */ |
ae038cb0 | 23718 | |
7188ed02 SM |
23719 | void |
23720 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 23721 | { |
7188ed02 SM |
23722 | auto it = m_dwarf2_cus.find (per_cu); |
23723 | if (it == m_dwarf2_cus.end ()) | |
23724 | return; | |
ae038cb0 | 23725 | |
7188ed02 | 23726 | delete it->second; |
ae038cb0 | 23727 | |
7188ed02 SM |
23728 | m_dwarf2_cus.erase (it); |
23729 | } | |
ae038cb0 | 23730 | |
7188ed02 SM |
23731 | dwarf2_per_objfile::~dwarf2_per_objfile () |
23732 | { | |
23733 | remove_all_cus (); | |
ae038cb0 DJ |
23734 | } |
23735 | ||
dee91e82 DE |
23736 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
23737 | We store these in a hash table separate from the DIEs, and preserve them | |
23738 | when the DIEs are flushed out of cache. | |
23739 | ||
23740 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 23741 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
23742 | or the type may come from a DWO file. Furthermore, while it's more logical |
23743 | to use per_cu->section+offset, with Fission the section with the data is in | |
23744 | the DWO file but we don't know that section at the point we need it. | |
23745 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
23746 | because we can enter the lookup routine, get_die_type_at_offset, from | |
23747 | outside this file, and thus won't necessarily have PER_CU->cu. | |
23748 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 23749 | |
dee91e82 | 23750 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 23751 | { |
dee91e82 | 23752 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 23753 | sect_offset sect_off; |
1c379e20 DJ |
23754 | struct type *type; |
23755 | }; | |
23756 | ||
dee91e82 | 23757 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23758 | |
23759 | static hashval_t | |
dee91e82 | 23760 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 23761 | { |
9a3c8263 SM |
23762 | const struct dwarf2_per_cu_offset_and_type *ofs |
23763 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 23764 | |
9c541725 | 23765 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
23766 | } |
23767 | ||
dee91e82 | 23768 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23769 | |
23770 | static int | |
dee91e82 | 23771 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 23772 | { |
9a3c8263 SM |
23773 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
23774 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
23775 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
23776 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 23777 | |
dee91e82 | 23778 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 23779 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
23780 | } |
23781 | ||
23782 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
23783 | table if necessary. For convenience, return TYPE. |
23784 | ||
23785 | The DIEs reading must have careful ordering to: | |
85102364 | 23786 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
23787 | reading current DIE. |
23788 | * Not trying to dereference contents of still incompletely read in types | |
23789 | while reading in other DIEs. | |
23790 | * Enable referencing still incompletely read in types just by a pointer to | |
23791 | the type without accessing its fields. | |
23792 | ||
23793 | Therefore caller should follow these rules: | |
23794 | * Try to fetch any prerequisite types we may need to build this DIE type | |
23795 | before building the type and calling set_die_type. | |
e71ec853 | 23796 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
23797 | possible before fetching more types to complete the current type. |
23798 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 23799 | |
f792889a | 23800 | static struct type * |
1c379e20 DJ |
23801 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
23802 | { | |
976ca316 | 23803 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 23804 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 23805 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
23806 | struct attribute *attr; |
23807 | struct dynamic_prop prop; | |
1c379e20 | 23808 | |
b4ba55a1 JB |
23809 | /* For Ada types, make sure that the gnat-specific data is always |
23810 | initialized (if not already set). There are a few types where | |
23811 | we should not be doing so, because the type-specific area is | |
23812 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
23813 | where the type-specific area is used to store the floatformat). | |
23814 | But this is not a problem, because the gnat-specific information | |
23815 | is actually not needed for these types. */ | |
23816 | if (need_gnat_info (cu) | |
78134374 SM |
23817 | && type->code () != TYPE_CODE_FUNC |
23818 | && type->code () != TYPE_CODE_FLT | |
23819 | && type->code () != TYPE_CODE_METHODPTR | |
23820 | && type->code () != TYPE_CODE_MEMBERPTR | |
23821 | && type->code () != TYPE_CODE_METHOD | |
b4ba55a1 JB |
23822 | && !HAVE_GNAT_AUX_INFO (type)) |
23823 | INIT_GNAT_SPECIFIC (type); | |
23824 | ||
3f2f83dd KB |
23825 | /* Read DW_AT_allocated and set in type. */ |
23826 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 23827 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23828 | { |
293e7e51 | 23829 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 23830 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23831 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd KB |
23832 | } |
23833 | else if (attr != NULL) | |
23834 | { | |
b98664d3 | 23835 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 23836 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23837 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23838 | } |
23839 | ||
23840 | /* Read DW_AT_associated and set in type. */ | |
23841 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 23842 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23843 | { |
293e7e51 | 23844 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 23845 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23846 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd KB |
23847 | } |
23848 | else if (attr != NULL) | |
23849 | { | |
b98664d3 | 23850 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 23851 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23852 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23853 | } |
23854 | ||
3cdcd0ce JB |
23855 | /* Read DW_AT_data_location and set in type. */ |
23856 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
293e7e51 | 23857 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 23858 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); |
3cdcd0ce | 23859 | |
976ca316 SM |
23860 | if (per_objfile->die_type_hash == NULL) |
23861 | per_objfile->die_type_hash | |
0335378b TT |
23862 | = htab_up (htab_create_alloc (127, |
23863 | per_cu_offset_and_type_hash, | |
23864 | per_cu_offset_and_type_eq, | |
23865 | NULL, xcalloc, xfree)); | |
1c379e20 | 23866 | |
dee91e82 | 23867 | ofs.per_cu = cu->per_cu; |
9c541725 | 23868 | ofs.sect_off = die->sect_off; |
1c379e20 | 23869 | ofs.type = type; |
dee91e82 | 23870 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 23871 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 23872 | if (*slot) |
b98664d3 | 23873 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 23874 | sect_offset_str (die->sect_off)); |
8d749320 SM |
23875 | *slot = XOBNEW (&objfile->objfile_obstack, |
23876 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 23877 | **slot = ofs; |
f792889a | 23878 | return type; |
1c379e20 DJ |
23879 | } |
23880 | ||
9c541725 | 23881 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 23882 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
23883 | |
23884 | static struct type * | |
9c541725 | 23885 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 23886 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23887 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 23888 | { |
dee91e82 | 23889 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 23890 | |
976ca316 | 23891 | if (per_objfile->die_type_hash == NULL) |
f792889a | 23892 | return NULL; |
1c379e20 | 23893 | |
dee91e82 | 23894 | ofs.per_cu = per_cu; |
9c541725 | 23895 | ofs.sect_off = sect_off; |
9a3c8263 | 23896 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 23897 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
23898 | if (slot) |
23899 | return slot->type; | |
23900 | else | |
23901 | return NULL; | |
23902 | } | |
23903 | ||
02142a6c | 23904 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
23905 | or return NULL if DIE does not have a saved type. */ |
23906 | ||
23907 | static struct type * | |
23908 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
23909 | { | |
aa66c379 | 23910 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
23911 | } |
23912 | ||
10b3939b DJ |
23913 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
23914 | ||
23915 | static void | |
23916 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
23917 | struct dwarf2_per_cu_data *ref_per_cu) | |
23918 | { | |
23919 | void **slot; | |
23920 | ||
23921 | if (cu->dependencies == NULL) | |
23922 | cu->dependencies | |
23923 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
23924 | NULL, &cu->comp_unit_obstack, | |
23925 | hashtab_obstack_allocate, | |
23926 | dummy_obstack_deallocate); | |
23927 | ||
23928 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
23929 | if (*slot == NULL) | |
23930 | *slot = ref_per_cu; | |
23931 | } | |
1c379e20 | 23932 | |
f504f079 DE |
23933 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
23934 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
23935 | cache that we must keep because we are keeping CU. |
23936 | ||
23937 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 23938 | |
10b3939b DJ |
23939 | static int |
23940 | dwarf2_mark_helper (void **slot, void *data) | |
23941 | { | |
7188ed02 SM |
23942 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
23943 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
23944 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
23945 | |
23946 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
23947 | reading of the chain. As such dependencies remain valid it is not much | |
23948 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 23949 | if (cu == nullptr) |
d07ed419 JK |
23950 | return 1; |
23951 | ||
7188ed02 | 23952 | if (cu->mark) |
10b3939b | 23953 | return 1; |
10b3939b | 23954 | |
7188ed02 SM |
23955 | cu->mark = true; |
23956 | ||
23957 | if (cu->dependencies != nullptr) | |
23958 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
23959 | |
23960 | return 1; | |
23961 | } | |
23962 | ||
f504f079 DE |
23963 | /* Set the mark field in CU and in every other compilation unit in the |
23964 | cache that we must keep because we are keeping CU. */ | |
23965 | ||
ae038cb0 DJ |
23966 | static void |
23967 | dwarf2_mark (struct dwarf2_cu *cu) | |
23968 | { | |
23969 | if (cu->mark) | |
23970 | return; | |
7188ed02 | 23971 | |
9068261f | 23972 | cu->mark = true; |
ae038cb0 | 23973 | |
7188ed02 SM |
23974 | if (cu->dependencies != nullptr) |
23975 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
23976 | } |
23977 | ||
72bf9492 DJ |
23978 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
23979 | is its offset in .debug_info for this objfile. */ | |
23980 | ||
23981 | static hashval_t | |
23982 | partial_die_hash (const void *item) | |
23983 | { | |
9a3c8263 SM |
23984 | const struct partial_die_info *part_die |
23985 | = (const struct partial_die_info *) item; | |
9a619af0 | 23986 | |
9c541725 | 23987 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
23988 | } |
23989 | ||
23990 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23991 | are equal if they have the same offset. */ | |
23992 | ||
23993 | static int | |
23994 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23995 | { | |
9a3c8263 SM |
23996 | const struct partial_die_info *part_die_lhs |
23997 | = (const struct partial_die_info *) item_lhs; | |
23998 | const struct partial_die_info *part_die_rhs | |
23999 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 24000 | |
9c541725 | 24001 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
24002 | } |
24003 | ||
3c3bb058 AB |
24004 | struct cmd_list_element *set_dwarf_cmdlist; |
24005 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 24006 | |
9291a0cd | 24007 | static void |
cd4fb1b2 SM |
24008 | show_check_physname (struct ui_file *file, int from_tty, |
24009 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 24010 | { |
cd4fb1b2 SM |
24011 | fprintf_filtered (file, |
24012 | _("Whether to check \"physname\" is %s.\n"), | |
24013 | value); | |
9291a0cd TT |
24014 | } |
24015 | ||
6c265988 | 24016 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 24017 | void |
6c265988 | 24018 | _initialize_dwarf2_read () |
9291a0cd | 24019 | { |
0743fc83 | 24020 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 24021 | Set DWARF specific variables.\n\ |
590042fc | 24022 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
24023 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
24024 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 24025 | |
0743fc83 | 24026 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
24027 | Show DWARF specific variables.\n\ |
24028 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
24029 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
24030 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 24031 | |
cd4fb1b2 SM |
24032 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
24033 | &dwarf_max_cache_age, _("\ | |
24034 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
24035 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
24036 | A higher limit means that cached compilation units will be stored\n\ | |
24037 | in memory longer, and more total memory will be used. Zero disables\n\ | |
24038 | caching, which can slow down startup."), | |
24039 | NULL, | |
24040 | show_dwarf_max_cache_age, | |
24041 | &set_dwarf_cmdlist, | |
24042 | &show_dwarf_cmdlist); | |
156942c7 | 24043 | |
cd4fb1b2 SM |
24044 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
24045 | Set debugging of the DWARF reader."), _("\ | |
24046 | Show debugging of the DWARF reader."), _("\ | |
24047 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
24048 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
24049 | information. A value greater than 1 provides more verbose information."), | |
24050 | NULL, | |
24051 | NULL, | |
24052 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24053 | |
cd4fb1b2 SM |
24054 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
24055 | Set debugging of the DWARF DIE reader."), _("\ | |
24056 | Show debugging of the DWARF DIE reader."), _("\ | |
24057 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
24058 | The value is the maximum depth to print."), | |
24059 | NULL, | |
24060 | NULL, | |
24061 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24062 | |
cd4fb1b2 SM |
24063 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
24064 | Set debugging of the dwarf line reader."), _("\ | |
24065 | Show debugging of the dwarf line reader."), _("\ | |
24066 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
24067 | A value of 1 (one) provides basic information.\n\ | |
24068 | A value greater than 1 provides more verbose information."), | |
24069 | NULL, | |
24070 | NULL, | |
24071 | &setdebuglist, &showdebuglist); | |
437afbb8 | 24072 | |
cd4fb1b2 SM |
24073 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
24074 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
24075 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
24076 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
24077 | the demangler."), | |
24078 | NULL, show_check_physname, | |
24079 | &setdebuglist, &showdebuglist); | |
900e11f9 | 24080 | |
e615022a DE |
24081 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
24082 | no_class, &use_deprecated_index_sections, _("\ | |
24083 | Set whether to use deprecated gdb_index sections."), _("\ | |
24084 | Show whether to use deprecated gdb_index sections."), _("\ | |
24085 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
24086 | Normally they are ignored either because of a missing feature or\n\ | |
24087 | performance issue.\n\ | |
24088 | Warning: This option must be enabled before gdb reads the file."), | |
24089 | NULL, | |
24090 | NULL, | |
24091 | &setlist, &showlist); | |
24092 | ||
f1e6e072 TT |
24093 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
24094 | &dwarf2_locexpr_funcs); | |
24095 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24096 | &dwarf2_loclist_funcs); | |
24097 | ||
24098 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24099 | &dwarf2_block_frame_base_locexpr_funcs); | |
24100 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24101 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
24102 | |
24103 | #if GDB_SELF_TEST | |
24104 | selftests::register_test ("dw2_expand_symtabs_matching", | |
24105 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
24106 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
24107 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 24108 | #endif |
6502dd73 | 24109 | } |