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 SM |
485 | /* The dwarf2_per_objfile that owns this. */ |
486 | struct dwarf2_per_objfile *per_objfile; | |
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 | ||
72bf9492 | 974 | /* Offset of this DIE. */ |
6f06d47b | 975 | const sect_offset sect_off; |
72bf9492 DJ |
976 | |
977 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 978 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 979 | |
72bf9492 | 980 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
981 | const unsigned int has_children : 1; |
982 | ||
72bf9492 DJ |
983 | unsigned int is_external : 1; |
984 | unsigned int is_declaration : 1; | |
985 | unsigned int has_type : 1; | |
986 | unsigned int has_specification : 1; | |
987 | unsigned int has_pc_info : 1; | |
481860b3 | 988 | unsigned int may_be_inlined : 1; |
72bf9492 | 989 | |
0c1b455e TT |
990 | /* This DIE has been marked DW_AT_main_subprogram. */ |
991 | unsigned int main_subprogram : 1; | |
992 | ||
72bf9492 DJ |
993 | /* Flag set if the SCOPE field of this structure has been |
994 | computed. */ | |
995 | unsigned int scope_set : 1; | |
996 | ||
fa4028e9 JB |
997 | /* Flag set if the DIE has a byte_size attribute. */ |
998 | unsigned int has_byte_size : 1; | |
999 | ||
ff908ebf AW |
1000 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1001 | unsigned int has_const_value : 1; | |
1002 | ||
98bfdba5 PA |
1003 | /* Flag set if any of the DIE's children are template arguments. */ |
1004 | unsigned int has_template_arguments : 1; | |
1005 | ||
52356b79 | 1006 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1007 | unsigned int fixup_called : 1; |
1008 | ||
36586728 TT |
1009 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1010 | unsigned int is_dwz : 1; | |
1011 | ||
1012 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1013 | unsigned int spec_is_dwz : 1; | |
1014 | ||
72bf9492 | 1015 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1016 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1017 | const char *name = nullptr; |
72bf9492 | 1018 | |
abc72ce4 | 1019 | /* The linkage name, if present. */ |
6f06d47b | 1020 | const char *linkage_name = nullptr; |
abc72ce4 | 1021 | |
72bf9492 DJ |
1022 | /* The scope to prepend to our children. This is generally |
1023 | allocated on the comp_unit_obstack, so will disappear | |
1024 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1025 | const char *scope = nullptr; |
72bf9492 | 1026 | |
95554aad TT |
1027 | /* Some data associated with the partial DIE. The tag determines |
1028 | which field is live. */ | |
1029 | union | |
1030 | { | |
1031 | /* The location description associated with this DIE, if any. */ | |
1032 | struct dwarf_block *locdesc; | |
1033 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1034 | sect_offset sect_off; |
6f06d47b | 1035 | } d {}; |
72bf9492 DJ |
1036 | |
1037 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1038 | CORE_ADDR lowpc = 0; |
1039 | CORE_ADDR highpc = 0; | |
72bf9492 | 1040 | |
93311388 | 1041 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1042 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1043 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1044 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1045 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1046 | |
1047 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1048 | DW_AT_specification (or DW_AT_abstract_origin or | |
1049 | DW_AT_extension). */ | |
6f06d47b | 1050 | sect_offset spec_offset {}; |
72bf9492 DJ |
1051 | |
1052 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1053 | if any. */ | |
6f06d47b YQ |
1054 | struct partial_die_info *die_parent = nullptr; |
1055 | struct partial_die_info *die_child = nullptr; | |
1056 | struct partial_die_info *die_sibling = nullptr; | |
1057 | ||
1058 | friend struct partial_die_info * | |
1059 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1060 | ||
1061 | private: | |
1062 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1063 | partial_die_info (sect_offset sect_off) | |
1064 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1065 | { | |
1066 | } | |
1067 | ||
1068 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1069 | int has_children_) | |
1070 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1071 | { | |
1072 | is_external = 0; | |
1073 | is_declaration = 0; | |
1074 | has_type = 0; | |
1075 | has_specification = 0; | |
1076 | has_pc_info = 0; | |
1077 | may_be_inlined = 0; | |
1078 | main_subprogram = 0; | |
1079 | scope_set = 0; | |
1080 | has_byte_size = 0; | |
1081 | has_const_value = 0; | |
1082 | has_template_arguments = 0; | |
1083 | fixup_called = 0; | |
1084 | is_dwz = 0; | |
1085 | spec_is_dwz = 0; | |
1086 | } | |
c906108c SS |
1087 | }; |
1088 | ||
c906108c SS |
1089 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1090 | but this would require a corresponding change in unpack_field_as_long | |
1091 | and friends. */ | |
1092 | static int bits_per_byte = 8; | |
1093 | ||
9c6a1327 TT |
1094 | struct variant_part_builder; |
1095 | ||
1096 | /* When reading a variant, we track a bit more information about the | |
1097 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1098 | |
1099 | struct variant_field | |
1100 | { | |
9c6a1327 TT |
1101 | int first_field = -1; |
1102 | int last_field = -1; | |
1103 | ||
1104 | /* A variant can contain other variant parts. */ | |
1105 | std::vector<variant_part_builder> variant_parts; | |
1106 | ||
2ddeaf8a TT |
1107 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1108 | default branch. */ | |
9c6a1327 TT |
1109 | bool default_branch = false; |
1110 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1111 | value. */ | |
1112 | ULONGEST discriminant_value = 0; | |
1113 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1114 | data. */ | |
1115 | struct dwarf_block *discr_list_data = nullptr; | |
1116 | }; | |
1117 | ||
1118 | /* This represents a DW_TAG_variant_part. */ | |
1119 | ||
1120 | struct variant_part_builder | |
1121 | { | |
1122 | /* The offset of the discriminant field. */ | |
1123 | sect_offset discriminant_offset {}; | |
1124 | ||
1125 | /* Variants that are direct children of this variant part. */ | |
1126 | std::vector<variant_field> variants; | |
1127 | ||
1128 | /* True if we're currently reading a variant. */ | |
1129 | bool processing_variant = false; | |
2ddeaf8a TT |
1130 | }; |
1131 | ||
52059ffd TT |
1132 | struct nextfield |
1133 | { | |
be2daae6 TT |
1134 | int accessibility = 0; |
1135 | int virtuality = 0; | |
9c6a1327 TT |
1136 | /* Variant parts need to find the discriminant, which is a DIE |
1137 | reference. We track the section offset of each field to make | |
1138 | this link. */ | |
1139 | sect_offset offset; | |
be2daae6 | 1140 | struct field field {}; |
52059ffd TT |
1141 | }; |
1142 | ||
1143 | struct fnfieldlist | |
1144 | { | |
be2daae6 TT |
1145 | const char *name = nullptr; |
1146 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1147 | }; |
1148 | ||
c906108c SS |
1149 | /* The routines that read and process dies for a C struct or C++ class |
1150 | pass lists of data member fields and lists of member function fields | |
1151 | in an instance of a field_info structure, as defined below. */ | |
1152 | struct field_info | |
c5aa993b | 1153 | { |
0963b4bd | 1154 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1155 | std::vector<struct nextfield> fields; |
1156 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1157 | |
85102364 | 1158 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1159 | int non_public_fields = 0; |
c906108c | 1160 | |
c5aa993b JM |
1161 | /* Member function fieldlist array, contains name of possibly overloaded |
1162 | member function, number of overloaded member functions and a pointer | |
1163 | to the head of the member function field chain. */ | |
be2daae6 | 1164 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1165 | |
1166 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1167 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1168 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1169 | |
1170 | /* Nested types defined by this class and the number of elements in this | |
1171 | list. */ | |
be2daae6 | 1172 | std::vector<struct decl_field> nested_types_list; |
317f7127 | 1173 | |
9c6a1327 TT |
1174 | /* If non-null, this is the variant part we are currently |
1175 | reading. */ | |
1176 | variant_part_builder *current_variant_part = nullptr; | |
1177 | /* This holds all the top-level variant parts attached to the type | |
1178 | we're reading. */ | |
1179 | std::vector<variant_part_builder> variant_parts; | |
1180 | ||
317f7127 TT |
1181 | /* Return the total number of fields (including baseclasses). */ |
1182 | int nfields () const | |
1183 | { | |
1184 | return fields.size () + baseclasses.size (); | |
1185 | } | |
c5aa993b | 1186 | }; |
c906108c | 1187 | |
ae038cb0 DJ |
1188 | /* Loaded secondary compilation units are kept in memory until they |
1189 | have not been referenced for the processing of this many | |
1190 | compilation units. Set this to zero to disable caching. Cache | |
1191 | sizes of up to at least twenty will improve startup time for | |
1192 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1193 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1194 | static void |
b4f54984 DE |
1195 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1196 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1197 | { |
3e43a32a | 1198 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1199 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1200 | value); |
1201 | } | |
4390d890 | 1202 | \f |
c906108c SS |
1203 | /* local function prototypes */ |
1204 | ||
918dd910 JK |
1205 | static void dwarf2_find_base_address (struct die_info *die, |
1206 | struct dwarf2_cu *cu); | |
1207 | ||
891813be | 1208 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1209 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1210 | const char *name); | |
0018ea6f | 1211 | |
f1902523 JK |
1212 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1213 | const gdb_byte *info_ptr, | |
3e225074 | 1214 | struct die_info *type_unit_die); |
f1902523 | 1215 | |
ed2dc618 SM |
1216 | static void dwarf2_build_psymtabs_hard |
1217 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1218 | |
72bf9492 DJ |
1219 | static void scan_partial_symbols (struct partial_die_info *, |
1220 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1221 | int, struct dwarf2_cu *); |
c906108c | 1222 | |
72bf9492 DJ |
1223 | static void add_partial_symbol (struct partial_die_info *, |
1224 | struct dwarf2_cu *); | |
63d06c5c | 1225 | |
72bf9492 DJ |
1226 | static void add_partial_namespace (struct partial_die_info *pdi, |
1227 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1228 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1229 | |
5d7cb8df | 1230 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1231 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1232 | struct dwarf2_cu *cu); |
1233 | ||
72bf9492 DJ |
1234 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1235 | struct dwarf2_cu *cu); | |
91c24f0a | 1236 | |
bc30ff58 JB |
1237 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1238 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1239 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1240 | |
d521ce57 | 1241 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1242 | |
dee91e82 | 1243 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1244 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1245 | |
fb816e8b TV |
1246 | /* A pair of partial_die_info and compilation unit. */ |
1247 | struct cu_partial_die_info | |
1248 | { | |
1249 | /* The compilation unit of the partial_die_info. */ | |
1250 | struct dwarf2_cu *cu; | |
1251 | /* A partial_die_info. */ | |
1252 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1253 | |
1254 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1255 | : cu (cu), | |
1256 | pdi (pdi) | |
405feb71 | 1257 | { /* Nothing. */ } |
122cf0f2 AB |
1258 | |
1259 | private: | |
1260 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1261 | }; |
1262 | ||
122cf0f2 AB |
1263 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1264 | struct dwarf2_cu *); | |
72bf9492 | 1265 | |
d521ce57 TT |
1266 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1267 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1268 | const gdb_byte *, bool *need_reprocess); |
1269 | ||
1270 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1271 | struct attribute *attr); | |
1272 | ||
1273 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1274 | |
ed2dc618 SM |
1275 | static sect_offset read_abbrev_offset |
1276 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1277 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1278 | |
ed2dc618 SM |
1279 | static const char *read_indirect_string |
1280 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1281 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1282 | |
ed2dc618 | 1283 | static const char *read_indirect_string_at_offset |
4f44ae6c | 1284 | (struct dwarf2_per_objfile *dwarf2_per_objfile, LONGEST str_offset); |
927aa2e7 | 1285 | |
d521ce57 TT |
1286 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1287 | const gdb_byte *, | |
3019eac3 DE |
1288 | unsigned int *); |
1289 | ||
18a8505e AT |
1290 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1291 | ULONGEST str_index); | |
1292 | ||
1293 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1294 | ULONGEST str_index); | |
3019eac3 | 1295 | |
e142c38c | 1296 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1297 | |
e142c38c DJ |
1298 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1299 | struct dwarf2_cu *); | |
c906108c | 1300 | |
7d45c7c3 KB |
1301 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1302 | struct dwarf2_cu *cu); | |
1303 | ||
a084a2a6 AT |
1304 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1305 | ||
05cf31d1 JB |
1306 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1307 | struct dwarf2_cu *cu); | |
1308 | ||
e142c38c | 1309 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1310 | |
e142c38c | 1311 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1312 | struct dwarf2_cu **); |
63d06c5c | 1313 | |
9c541725 | 1314 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1315 | struct dwarf2_cu *cu); |
debd256d | 1316 | |
f3f5162e | 1317 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1318 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1319 | CORE_ADDR, int decode_mapping); |
c906108c | 1320 | |
804d2729 TT |
1321 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1322 | const char *); | |
c906108c | 1323 | |
a14ed312 | 1324 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1325 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1326 | |
ff39bb5e | 1327 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1328 | struct dwarf2_cu *); |
c906108c | 1329 | |
ff39bb5e | 1330 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1331 | struct type *type, |
1332 | const char *name, | |
1333 | struct obstack *obstack, | |
12df843f | 1334 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1335 | const gdb_byte **bytes, |
98bfdba5 | 1336 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1337 | |
e7c27a73 | 1338 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1339 | |
b4ba55a1 JB |
1340 | static int need_gnat_info (struct dwarf2_cu *); |
1341 | ||
3e43a32a MS |
1342 | static struct type *die_descriptive_type (struct die_info *, |
1343 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1344 | |
1345 | static void set_descriptive_type (struct type *, struct die_info *, | |
1346 | struct dwarf2_cu *); | |
1347 | ||
e7c27a73 DJ |
1348 | static struct type *die_containing_type (struct die_info *, |
1349 | struct dwarf2_cu *); | |
c906108c | 1350 | |
ff39bb5e | 1351 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1352 | struct dwarf2_cu *); |
c906108c | 1353 | |
f792889a | 1354 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1355 | |
673bfd45 DE |
1356 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1357 | ||
0d5cff50 | 1358 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1359 | |
6e70227d | 1360 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1361 | const char *suffix, int physname, |
1362 | struct dwarf2_cu *cu); | |
63d06c5c | 1363 | |
e7c27a73 | 1364 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1365 | |
348e048f DE |
1366 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1367 | ||
e7c27a73 | 1368 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1369 | |
e7c27a73 | 1370 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1371 | |
96408a79 SA |
1372 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1373 | ||
71a3c369 TT |
1374 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1375 | ||
ff013f42 | 1376 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1377 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1378 | |
41144253 | 1379 | /* Return the .debug_loclists section to use for cu. */ |
1380 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1381 | ||
3a2b436a | 1382 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1383 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1384 | enum pc_bounds_kind |
1385 | { | |
e385593e | 1386 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1387 | PC_BOUNDS_NOT_PRESENT, |
1388 | ||
e385593e JK |
1389 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1390 | were present but they do not form a valid range of PC addresses. */ | |
1391 | PC_BOUNDS_INVALID, | |
1392 | ||
3a2b436a JK |
1393 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1394 | PC_BOUNDS_RANGES, | |
1395 | ||
1396 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1397 | PC_BOUNDS_HIGH_LOW, | |
1398 | }; | |
1399 | ||
1400 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1401 | CORE_ADDR *, CORE_ADDR *, | |
1402 | struct dwarf2_cu *, | |
891813be | 1403 | dwarf2_psymtab *); |
c906108c | 1404 | |
fae299cd DC |
1405 | static void get_scope_pc_bounds (struct die_info *, |
1406 | CORE_ADDR *, CORE_ADDR *, | |
1407 | struct dwarf2_cu *); | |
1408 | ||
801e3a5b JB |
1409 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1410 | CORE_ADDR, struct dwarf2_cu *); | |
1411 | ||
a14ed312 | 1412 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1413 | struct dwarf2_cu *); |
c906108c | 1414 | |
a14ed312 | 1415 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1416 | struct type *, struct dwarf2_cu *); |
c906108c | 1417 | |
a14ed312 | 1418 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1419 | struct die_info *, struct type *, |
e7c27a73 | 1420 | struct dwarf2_cu *); |
c906108c | 1421 | |
a14ed312 | 1422 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1423 | struct type *, |
1424 | struct dwarf2_cu *); | |
c906108c | 1425 | |
134d01f1 | 1426 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1427 | |
e7c27a73 | 1428 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1429 | |
e7c27a73 | 1430 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1431 | |
5d7cb8df JK |
1432 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1433 | ||
804d2729 | 1434 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1435 | |
27aa8d6a SW |
1436 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1437 | ||
74921315 KS |
1438 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1439 | ||
f55ee35c JK |
1440 | static struct type *read_module_type (struct die_info *die, |
1441 | struct dwarf2_cu *cu); | |
1442 | ||
38d518c9 | 1443 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1444 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1445 | |
134d01f1 | 1446 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1447 | |
7d79de9a TT |
1448 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1449 | bool * = nullptr); | |
c906108c | 1450 | |
6e70227d | 1451 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1452 | struct dwarf2_cu *); |
1453 | ||
bf6af496 | 1454 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1455 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1456 | struct die_info *); |
639d11d3 | 1457 | |
dee91e82 | 1458 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1459 | const gdb_byte *info_ptr, |
1460 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1461 | struct die_info *parent); |
1462 | ||
d521ce57 TT |
1463 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1464 | struct die_info **, const gdb_byte *, | |
3e225074 | 1465 | int); |
3019eac3 | 1466 | |
d521ce57 | 1467 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1468 | struct die_info **, const gdb_byte *); |
93311388 | 1469 | |
e7c27a73 | 1470 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1471 | |
15d034d0 | 1472 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1473 | struct objfile *); |
71c25dea | 1474 | |
15d034d0 | 1475 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1476 | |
15d034d0 | 1477 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1478 | struct die_info *die, |
1479 | struct dwarf2_cu *cu); | |
1480 | ||
ca69b9e6 DE |
1481 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1482 | struct dwarf2_cu *cu); | |
1483 | ||
e142c38c | 1484 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1485 | struct dwarf2_cu **); |
9219021c | 1486 | |
d97bc12b DE |
1487 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1488 | ||
1489 | static void dump_die_for_error (struct die_info *); | |
1490 | ||
1491 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1492 | struct die_info *); | |
c906108c | 1493 | |
d97bc12b | 1494 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1495 | |
51545339 | 1496 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1497 | struct dwarf2_cu *); |
c906108c | 1498 | |
348e048f | 1499 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1500 | const struct attribute *, |
348e048f DE |
1501 | struct dwarf2_cu **); |
1502 | ||
10b3939b | 1503 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1504 | const struct attribute *, |
f2f0e013 | 1505 | struct dwarf2_cu **); |
c906108c | 1506 | |
348e048f | 1507 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1508 | const struct attribute *, |
348e048f DE |
1509 | struct dwarf2_cu **); |
1510 | ||
ac9ec31b DE |
1511 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1512 | struct dwarf2_cu *); | |
1513 | ||
1514 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1515 | const struct attribute *, |
ac9ec31b DE |
1516 | struct dwarf2_cu *); |
1517 | ||
ab432490 SM |
1518 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1519 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1520 | |
ab432490 SM |
1521 | static void read_signatured_type (signatured_type *sig_type, |
1522 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1523 | |
63e43d3a PMR |
1524 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1525 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1526 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1527 | |
c906108c SS |
1528 | /* memory allocation interface */ |
1529 | ||
7b5a2f43 | 1530 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1531 | |
b60c80d6 | 1532 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1533 | |
43f3e411 | 1534 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1535 | |
8cf6f0b1 TT |
1536 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1537 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1538 | const struct attribute *attr); |
8cf6f0b1 | 1539 | |
ff39bb5e | 1540 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1541 | struct symbol *sym, |
f1e6e072 TT |
1542 | struct dwarf2_cu *cu, |
1543 | int is_block); | |
4c2df51b | 1544 | |
d521ce57 TT |
1545 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1546 | const gdb_byte *info_ptr, | |
1547 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1548 | |
72bf9492 DJ |
1549 | static hashval_t partial_die_hash (const void *item); |
1550 | ||
1551 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1552 | ||
ae038cb0 | 1553 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1554 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1555 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1556 | |
9816fde3 | 1557 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1558 | struct die_info *comp_unit_die, |
1559 | enum language pretend_language); | |
93311388 | 1560 | |
f792889a DJ |
1561 | static struct type *set_die_type (struct die_info *, struct type *, |
1562 | struct dwarf2_cu *); | |
1c379e20 | 1563 | |
ed2dc618 | 1564 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1565 | |
ed2dc618 | 1566 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1567 | |
ab432490 SM |
1568 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1569 | dwarf2_per_objfile *per_objfile, | |
1570 | bool skip_partial, | |
1571 | enum language pretend_language); | |
10b3939b | 1572 | |
8fc0b21d | 1573 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1574 | enum language pretend_language); |
10b3939b | 1575 | |
8fc0b21d | 1576 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1577 | enum language pretend_language); |
f4dc4d17 | 1578 | |
10b3939b DJ |
1579 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1580 | struct dwarf2_per_cu_data *); | |
1581 | ||
ae038cb0 DJ |
1582 | static void dwarf2_mark (struct dwarf2_cu *); |
1583 | ||
b64f50a1 | 1584 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1585 | dwarf2_per_cu_data *per_cu, |
1586 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1587 | |
f792889a | 1588 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1589 | |
120ce1b5 SM |
1590 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1591 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1592 | enum language pretend_language); |
1593 | ||
ed2dc618 | 1594 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1595 | |
b303c6f6 AB |
1596 | /* Class, the destructor of which frees all allocated queue entries. This |
1597 | will only have work to do if an error was thrown while processing the | |
1598 | dwarf. If no error was thrown then the queue entries should have all | |
1599 | been processed, and freed, as we went along. */ | |
1600 | ||
1601 | class dwarf2_queue_guard | |
1602 | { | |
1603 | public: | |
39856def TT |
1604 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1605 | : m_per_objfile (per_objfile) | |
1606 | { | |
1607 | } | |
b303c6f6 AB |
1608 | |
1609 | /* Free any entries remaining on the queue. There should only be | |
1610 | entries left if we hit an error while processing the dwarf. */ | |
1611 | ~dwarf2_queue_guard () | |
1612 | { | |
39856def TT |
1613 | /* Ensure that no memory is allocated by the queue. */ |
1614 | std::queue<dwarf2_queue_item> empty; | |
5989a64e | 1615 | std::swap (m_per_objfile->per_bfd->queue, empty); |
39856def | 1616 | } |
b303c6f6 | 1617 | |
39856def | 1618 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1619 | |
39856def TT |
1620 | private: |
1621 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1622 | }; |
1623 | ||
39856def TT |
1624 | dwarf2_queue_item::~dwarf2_queue_item () |
1625 | { | |
1626 | /* Anything still marked queued is likely to be in an | |
1627 | inconsistent state, so discard it. */ | |
1628 | if (per_cu->queued) | |
1629 | { | |
7188ed02 | 1630 | per_objfile->remove_cu (per_cu); |
39856def TT |
1631 | per_cu->queued = 0; |
1632 | } | |
1633 | } | |
1634 | ||
d721ba37 PA |
1635 | /* The return type of find_file_and_directory. Note, the enclosed |
1636 | string pointers are only valid while this object is valid. */ | |
1637 | ||
1638 | struct file_and_directory | |
1639 | { | |
1640 | /* The filename. This is never NULL. */ | |
1641 | const char *name; | |
1642 | ||
1643 | /* The compilation directory. NULL if not known. If we needed to | |
1644 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1645 | points directly to the DW_AT_comp_dir string attribute owned by | |
1646 | the obstack that owns the DIE. */ | |
1647 | const char *comp_dir; | |
1648 | ||
1649 | /* If we needed to build a new string for comp_dir, this is what | |
1650 | owns the storage. */ | |
1651 | std::string comp_dir_storage; | |
1652 | }; | |
1653 | ||
1654 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1655 | struct dwarf2_cu *cu); | |
9291a0cd | 1656 | |
298e9637 | 1657 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1658 | |
298e9637 | 1659 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1660 | |
57d63ce2 | 1661 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1662 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1663 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1664 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1665 | |
ed2dc618 SM |
1666 | static struct dwp_file *get_dwp_file |
1667 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1668 | |
3019eac3 | 1669 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1670 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1671 | ULONGEST signature); | |
3019eac3 DE |
1672 | |
1673 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1674 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1675 | |
1b555f17 | 1676 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1677 | |
263db9a1 TT |
1678 | /* A unique pointer to a dwo_file. */ |
1679 | ||
51ac9db5 | 1680 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1681 | |
ed2dc618 | 1682 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1683 | |
1b80a9fa | 1684 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1685 | |
1686 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1687 | \f |
1688 | /* Various complaints about symbol reading that don't abort the process. */ | |
1689 | ||
4390d890 DE |
1690 | static void |
1691 | dwarf2_debug_line_missing_file_complaint (void) | |
1692 | { | |
b98664d3 | 1693 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1694 | } |
1695 | ||
1696 | static void | |
1697 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1698 | { | |
b98664d3 | 1699 | complaint (_(".debug_line section has line " |
4390d890 DE |
1700 | "program sequence without an end")); |
1701 | } | |
1702 | ||
1703 | static void | |
1704 | dwarf2_complex_location_expr_complaint (void) | |
1705 | { | |
b98664d3 | 1706 | complaint (_("location expression too complex")); |
4390d890 DE |
1707 | } |
1708 | ||
1709 | static void | |
1710 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1711 | int arg3) | |
1712 | { | |
b98664d3 | 1713 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1714 | arg1, arg2, arg3); |
1715 | } | |
1716 | ||
4390d890 DE |
1717 | static void |
1718 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1719 | { | |
b98664d3 | 1720 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1721 | arg1, arg2); |
1722 | } | |
527f3840 JK |
1723 | |
1724 | /* Hash function for line_header_hash. */ | |
1725 | ||
1726 | static hashval_t | |
1727 | line_header_hash (const struct line_header *ofs) | |
1728 | { | |
9c541725 | 1729 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1730 | } |
1731 | ||
1732 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1733 | ||
1734 | static hashval_t | |
1735 | line_header_hash_voidp (const void *item) | |
1736 | { | |
9a3c8263 | 1737 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1738 | |
1739 | return line_header_hash (ofs); | |
1740 | } | |
1741 | ||
1742 | /* Equality function for line_header_hash. */ | |
1743 | ||
1744 | static int | |
1745 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1746 | { | |
9a3c8263 SM |
1747 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1748 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1749 | |
9c541725 | 1750 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1751 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1752 | } | |
1753 | ||
4390d890 | 1754 | \f |
9291a0cd | 1755 | |
330cdd98 PA |
1756 | /* See declaration. */ |
1757 | ||
5989a64e SM |
1758 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1759 | bool can_copy_) | |
c3699833 SM |
1760 | : obfd (obfd), |
1761 | can_copy (can_copy_) | |
330cdd98 PA |
1762 | { |
1763 | if (names == NULL) | |
1764 | names = &dwarf2_elf_names; | |
1765 | ||
330cdd98 PA |
1766 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1767 | locate_sections (obfd, sec, *names); | |
1768 | } | |
1769 | ||
5989a64e | 1770 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1771 | { |
b76e467d | 1772 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1773 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1774 | |
b2bdb8cf | 1775 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1776 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1777 | |
5989a64e | 1778 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1779 | } |
1780 | ||
7188ed02 | 1781 | /* See read.h. */ |
330cdd98 PA |
1782 | |
1783 | void | |
7188ed02 | 1784 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1785 | { |
7188ed02 SM |
1786 | for (auto pair : m_dwarf2_cus) |
1787 | delete pair.second; | |
330cdd98 | 1788 | |
7188ed02 | 1789 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1790 | } |
1791 | ||
11ed8cad TT |
1792 | /* A helper class that calls free_cached_comp_units on |
1793 | destruction. */ | |
1794 | ||
1795 | class free_cached_comp_units | |
1796 | { | |
1797 | public: | |
1798 | ||
1799 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1800 | : m_per_objfile (per_objfile) | |
1801 | { | |
1802 | } | |
1803 | ||
1804 | ~free_cached_comp_units () | |
1805 | { | |
7188ed02 | 1806 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1807 | } |
1808 | ||
1809 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1810 | ||
1811 | private: | |
1812 | ||
1813 | dwarf2_per_objfile *m_per_objfile; | |
1814 | }; | |
1815 | ||
af758d11 SM |
1816 | /* See read.h. */ |
1817 | ||
1818 | bool | |
1819 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1820 | { | |
1821 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1822 | ||
1823 | return this->m_symtabs[per_cu->index] != nullptr; | |
1824 | } | |
1825 | ||
1826 | /* See read.h. */ | |
1827 | ||
1828 | compunit_symtab * | |
1829 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1830 | { | |
1831 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1832 | ||
1833 | return this->m_symtabs[per_cu->index]; | |
1834 | } | |
1835 | ||
1836 | /* See read.h. */ | |
1837 | ||
1838 | void | |
1839 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1840 | compunit_symtab *symtab) | |
1841 | { | |
1842 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1843 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1844 | ||
1845 | this->m_symtabs[per_cu->index] = symtab; | |
1846 | } | |
1847 | ||
c906108c | 1848 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1849 | information and return true if we have enough to do something. |
1850 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1851 | ELF names are used. CAN_COPY is true for formats where symbol |
1852 | interposition is possible and so symbol values must follow copy | |
1853 | relocation rules. */ | |
c906108c SS |
1854 | |
1855 | int | |
251d32d9 | 1856 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
1857 | const struct dwarf2_debug_sections *names, |
1858 | bool can_copy) | |
c906108c | 1859 | { |
97cbe998 SDJ |
1860 | if (objfile->flags & OBJF_READNEVER) |
1861 | return 0; | |
1862 | ||
ed2dc618 SM |
1863 | struct dwarf2_per_objfile *dwarf2_per_objfile |
1864 | = get_dwarf2_per_objfile (objfile); | |
1865 | ||
1866 | if (dwarf2_per_objfile == NULL) | |
5989a64e | 1867 | { |
17ee85fc TT |
1868 | dwarf2_per_bfd *per_bfd; |
1869 | ||
1870 | /* We can share a "dwarf2_per_bfd" with other objfiles if the BFD | |
1871 | doesn't require relocations and if there aren't partial symbols | |
1872 | from some other reader. */ | |
1873 | if (!objfile_has_partial_symbols (objfile) | |
1874 | && !gdb_bfd_requires_relocations (objfile->obfd)) | |
1875 | { | |
1876 | /* See if one has been created for this BFD yet. */ | |
1877 | per_bfd = dwarf2_per_bfd_bfd_data_key.get (objfile->obfd); | |
1878 | ||
1879 | if (per_bfd == nullptr) | |
1880 | { | |
1881 | /* No, create it now. */ | |
1882 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1883 | dwarf2_per_bfd_bfd_data_key.set (objfile->obfd, per_bfd); | |
1884 | } | |
1885 | } | |
1886 | else | |
1887 | { | |
1888 | /* No sharing possible, create one specifically for this objfile. */ | |
1889 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1890 | dwarf2_per_bfd_objfile_data_key.set (objfile, per_bfd); | |
1891 | } | |
5989a64e SM |
1892 | |
1893 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); | |
1894 | } | |
5bfd760d | 1895 | |
5989a64e SM |
1896 | return (!dwarf2_per_objfile->per_bfd->info.is_virtual |
1897 | && dwarf2_per_objfile->per_bfd->info.s.section != NULL | |
1898 | && !dwarf2_per_objfile->per_bfd->abbrev.is_virtual | |
1899 | && dwarf2_per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
1900 | } |
1901 | ||
251d32d9 TG |
1902 | /* When loading sections, we look either for uncompressed section or for |
1903 | compressed section names. */ | |
233a11ab CS |
1904 | |
1905 | static int | |
251d32d9 TG |
1906 | section_is_p (const char *section_name, |
1907 | const struct dwarf2_section_names *names) | |
233a11ab | 1908 | { |
251d32d9 TG |
1909 | if (names->normal != NULL |
1910 | && strcmp (section_name, names->normal) == 0) | |
1911 | return 1; | |
1912 | if (names->compressed != NULL | |
1913 | && strcmp (section_name, names->compressed) == 0) | |
1914 | return 1; | |
1915 | return 0; | |
233a11ab CS |
1916 | } |
1917 | ||
330cdd98 | 1918 | /* See declaration. */ |
c906108c | 1919 | |
330cdd98 | 1920 | void |
5989a64e SM |
1921 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
1922 | const dwarf2_debug_sections &names) | |
c906108c | 1923 | { |
fd361982 | 1924 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1925 | |
dc7650b8 JK |
1926 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1927 | { | |
1928 | } | |
950b7495 KS |
1929 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1930 | > bfd_get_file_size (abfd)) | |
1931 | { | |
1932 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1933 | warning (_("Discarding section %s which has a section size (%s" | |
1934 | ") larger than the file size [in module %s]"), | |
1935 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1936 | bfd_get_filename (abfd)); | |
1937 | } | |
330cdd98 | 1938 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1939 | { |
330cdd98 | 1940 | this->info.s.section = sectp; |
fd361982 | 1941 | this->info.size = bfd_section_size (sectp); |
c906108c | 1942 | } |
330cdd98 | 1943 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 1944 | { |
330cdd98 | 1945 | this->abbrev.s.section = sectp; |
fd361982 | 1946 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 1947 | } |
330cdd98 | 1948 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 1949 | { |
330cdd98 | 1950 | this->line.s.section = sectp; |
fd361982 | 1951 | this->line.size = bfd_section_size (sectp); |
c906108c | 1952 | } |
330cdd98 | 1953 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 1954 | { |
330cdd98 | 1955 | this->loc.s.section = sectp; |
fd361982 | 1956 | this->loc.size = bfd_section_size (sectp); |
c906108c | 1957 | } |
330cdd98 | 1958 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 1959 | { |
330cdd98 | 1960 | this->loclists.s.section = sectp; |
fd361982 | 1961 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 1962 | } |
330cdd98 | 1963 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 1964 | { |
330cdd98 | 1965 | this->macinfo.s.section = sectp; |
fd361982 | 1966 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 1967 | } |
330cdd98 | 1968 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 1969 | { |
330cdd98 | 1970 | this->macro.s.section = sectp; |
fd361982 | 1971 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 1972 | } |
330cdd98 | 1973 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 1974 | { |
330cdd98 | 1975 | this->str.s.section = sectp; |
fd361982 | 1976 | this->str.size = bfd_section_size (sectp); |
c906108c | 1977 | } |
18a8505e AT |
1978 | else if (section_is_p (sectp->name, &names.str_offsets)) |
1979 | { | |
1980 | this->str_offsets.s.section = sectp; | |
1981 | this->str_offsets.size = bfd_section_size (sectp); | |
1982 | } | |
330cdd98 | 1983 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 1984 | { |
330cdd98 | 1985 | this->line_str.s.section = sectp; |
fd361982 | 1986 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 1987 | } |
330cdd98 | 1988 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 1989 | { |
330cdd98 | 1990 | this->addr.s.section = sectp; |
fd361982 | 1991 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 1992 | } |
330cdd98 | 1993 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 1994 | { |
330cdd98 | 1995 | this->frame.s.section = sectp; |
fd361982 | 1996 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 1997 | } |
330cdd98 | 1998 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 1999 | { |
330cdd98 | 2000 | this->eh_frame.s.section = sectp; |
fd361982 | 2001 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2002 | } |
330cdd98 | 2003 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2004 | { |
330cdd98 | 2005 | this->ranges.s.section = sectp; |
fd361982 | 2006 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2007 | } |
330cdd98 | 2008 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2009 | { |
330cdd98 | 2010 | this->rnglists.s.section = sectp; |
fd361982 | 2011 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2012 | } |
330cdd98 | 2013 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2014 | { |
8b70b953 TT |
2015 | struct dwarf2_section_info type_section; |
2016 | ||
2017 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2018 | type_section.s.section = sectp; |
fd361982 | 2019 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2020 | |
fd5866f6 | 2021 | this->types.push_back (type_section); |
348e048f | 2022 | } |
330cdd98 | 2023 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2024 | { |
330cdd98 | 2025 | this->gdb_index.s.section = sectp; |
fd361982 | 2026 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2027 | } |
927aa2e7 JK |
2028 | else if (section_is_p (sectp->name, &names.debug_names)) |
2029 | { | |
2030 | this->debug_names.s.section = sectp; | |
fd361982 | 2031 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2032 | } |
2033 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2034 | { | |
2035 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2036 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2037 | } |
dce234bc | 2038 | |
fd361982 AM |
2039 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2040 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2041 | this->has_section_at_zero = true; |
c906108c SS |
2042 | } |
2043 | ||
dce234bc | 2044 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2045 | SECTION_NAME. */ |
af34e669 | 2046 | |
dce234bc | 2047 | void |
3017a003 TG |
2048 | dwarf2_get_section_info (struct objfile *objfile, |
2049 | enum dwarf2_section_enum sect, | |
d521ce57 | 2050 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2051 | bfd_size_type *sizep) |
2052 | { | |
17ee85fc | 2053 | struct dwarf2_per_objfile *data = get_dwarf2_per_objfile (objfile); |
dce234bc | 2054 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2055 | |
2056 | /* We may see an objfile without any DWARF, in which case we just | |
2057 | return nothing. */ | |
2058 | if (data == NULL) | |
2059 | { | |
2060 | *sectp = NULL; | |
2061 | *bufp = NULL; | |
2062 | *sizep = 0; | |
2063 | return; | |
2064 | } | |
3017a003 TG |
2065 | switch (sect) |
2066 | { | |
2067 | case DWARF2_DEBUG_FRAME: | |
5989a64e | 2068 | info = &data->per_bfd->frame; |
3017a003 TG |
2069 | break; |
2070 | case DWARF2_EH_FRAME: | |
5989a64e | 2071 | info = &data->per_bfd->eh_frame; |
3017a003 TG |
2072 | break; |
2073 | default: | |
2074 | gdb_assert_not_reached ("unexpected section"); | |
2075 | } | |
dce234bc | 2076 | |
96b79293 | 2077 | info->read (objfile); |
dce234bc | 2078 | |
96b79293 | 2079 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2080 | *bufp = info->buffer; |
2081 | *sizep = info->size; | |
2082 | } | |
2083 | ||
36586728 TT |
2084 | /* A helper function to find the sections for a .dwz file. */ |
2085 | ||
2086 | static void | |
2087 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2088 | { | |
9a3c8263 | 2089 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2090 | |
2091 | /* Note that we only support the standard ELF names, because .dwz | |
2092 | is ELF-only (at the time of writing). */ | |
2093 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2094 | { | |
049412e3 | 2095 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2096 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2097 | } |
2098 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2099 | { | |
049412e3 | 2100 | dwz_file->info.s.section = sectp; |
fd361982 | 2101 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2102 | } |
2103 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2104 | { | |
049412e3 | 2105 | dwz_file->str.s.section = sectp; |
fd361982 | 2106 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2107 | } |
2108 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2109 | { | |
049412e3 | 2110 | dwz_file->line.s.section = sectp; |
fd361982 | 2111 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2112 | } |
2113 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2114 | { | |
049412e3 | 2115 | dwz_file->macro.s.section = sectp; |
fd361982 | 2116 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2117 | } |
2ec9a5e0 TT |
2118 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2119 | { | |
049412e3 | 2120 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2121 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2122 | } |
927aa2e7 JK |
2123 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2124 | { | |
2125 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2126 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2127 | } |
36586728 TT |
2128 | } |
2129 | ||
c4973306 | 2130 | /* See dwarf2read.h. */ |
36586728 | 2131 | |
c4973306 | 2132 | struct dwz_file * |
c3699833 | 2133 | dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd) |
36586728 | 2134 | { |
36586728 | 2135 | const char *filename; |
acd13123 | 2136 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2137 | size_t buildid_len; |
2138 | bfd_byte *buildid; | |
36586728 | 2139 | |
c3699833 SM |
2140 | if (per_bfd->dwz_file != NULL) |
2141 | return per_bfd->dwz_file.get (); | |
36586728 | 2142 | |
4db1a1dc | 2143 | bfd_set_error (bfd_error_no_error); |
791afaa2 | 2144 | gdb::unique_xmalloc_ptr<char> data |
c3699833 | 2145 | (bfd_get_alt_debug_link_info (per_bfd->obfd, |
791afaa2 | 2146 | &buildid_len_arg, &buildid)); |
4db1a1dc TT |
2147 | if (data == NULL) |
2148 | { | |
2149 | if (bfd_get_error () == bfd_error_no_error) | |
2150 | return NULL; | |
2151 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2152 | bfd_errmsg (bfd_get_error ())); | |
2153 | } | |
791afaa2 TT |
2154 | |
2155 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2156 | |
acd13123 TT |
2157 | buildid_len = (size_t) buildid_len_arg; |
2158 | ||
791afaa2 | 2159 | filename = data.get (); |
d721ba37 PA |
2160 | |
2161 | std::string abs_storage; | |
36586728 TT |
2162 | if (!IS_ABSOLUTE_PATH (filename)) |
2163 | { | |
14278e1f | 2164 | gdb::unique_xmalloc_ptr<char> abs |
c3699833 | 2165 | = gdb_realpath (bfd_get_filename (per_bfd->obfd)); |
36586728 | 2166 | |
14278e1f | 2167 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2168 | filename = abs_storage.c_str (); |
36586728 TT |
2169 | } |
2170 | ||
dc294be5 TT |
2171 | /* First try the file name given in the section. If that doesn't |
2172 | work, try to use the build-id instead. */ | |
ad80db5b | 2173 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget)); |
dc294be5 | 2174 | if (dwz_bfd != NULL) |
36586728 | 2175 | { |
192b62ce | 2176 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2177 | dwz_bfd.reset (nullptr); |
36586728 TT |
2178 | } |
2179 | ||
dc294be5 TT |
2180 | if (dwz_bfd == NULL) |
2181 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2182 | ||
0d79cdc4 AM |
2183 | if (dwz_bfd == nullptr) |
2184 | { | |
2185 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
c3699833 | 2186 | const char *origname = bfd_get_filename (per_bfd->obfd); |
0d79cdc4 AM |
2187 | |
2188 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2189 | buildid_len, | |
2190 | origname, | |
2191 | &alt_filename)); | |
2192 | ||
2193 | if (fd.get () >= 0) | |
2194 | { | |
2195 | /* File successfully retrieved from server. */ | |
ad80db5b | 2196 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget); |
0d79cdc4 AM |
2197 | |
2198 | if (dwz_bfd == nullptr) | |
2199 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2200 | alt_filename.get ()); | |
2201 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2202 | dwz_bfd.reset (nullptr); | |
2203 | } | |
2204 | } | |
2205 | ||
dc294be5 TT |
2206 | if (dwz_bfd == NULL) |
2207 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
c3699833 | 2208 | bfd_get_filename (per_bfd->obfd)); |
dc294be5 | 2209 | |
7ff8cb8c TT |
2210 | std::unique_ptr<struct dwz_file> result |
2211 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2212 | |
7ff8cb8c TT |
2213 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2214 | result.get ()); | |
36586728 | 2215 | |
c3699833 SM |
2216 | gdb_bfd_record_inclusion (per_bfd->obfd, result->dwz_bfd.get ()); |
2217 | per_bfd->dwz_file = std::move (result); | |
2218 | return per_bfd->dwz_file.get (); | |
36586728 | 2219 | } |
9291a0cd | 2220 | \f |
7b9f3c50 DE |
2221 | /* DWARF quick_symbols_functions support. */ |
2222 | ||
2223 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2224 | unique line tables, so we maintain a separate table of all .debug_line | |
2225 | derived entries to support the sharing. | |
2226 | All the quick functions need is the list of file names. We discard the | |
2227 | line_header when we're done and don't need to record it here. */ | |
2228 | struct quick_file_names | |
2229 | { | |
094b34ac DE |
2230 | /* The data used to construct the hash key. */ |
2231 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2232 | |
2233 | /* The number of entries in file_names, real_names. */ | |
2234 | unsigned int num_file_names; | |
2235 | ||
2236 | /* The file names from the line table, after being run through | |
2237 | file_full_name. */ | |
2238 | const char **file_names; | |
2239 | ||
2240 | /* The file names from the line table after being run through | |
2241 | gdb_realpath. These are computed lazily. */ | |
2242 | const char **real_names; | |
2243 | }; | |
2244 | ||
2245 | /* When using the index (and thus not using psymtabs), each CU has an | |
2246 | object of this type. This is used to hold information needed by | |
2247 | the various "quick" methods. */ | |
2248 | struct dwarf2_per_cu_quick_data | |
2249 | { | |
2250 | /* The file table. This can be NULL if there was no file table | |
2251 | or it's currently not read in. | |
5989a64e | 2252 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2253 | struct quick_file_names *file_names; |
2254 | ||
7b9f3c50 DE |
2255 | /* A temporary mark bit used when iterating over all CUs in |
2256 | expand_symtabs_matching. */ | |
2257 | unsigned int mark : 1; | |
2258 | ||
2259 | /* True if we've tried to read the file table and found there isn't one. | |
2260 | There will be no point in trying to read it again next time. */ | |
2261 | unsigned int no_file_data : 1; | |
2262 | }; | |
2263 | ||
094b34ac DE |
2264 | /* Utility hash function for a stmt_list_hash. */ |
2265 | ||
2266 | static hashval_t | |
2267 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2268 | { | |
2269 | hashval_t v = 0; | |
2270 | ||
2271 | if (stmt_list_hash->dwo_unit != NULL) | |
2272 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2273 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2274 | return v; |
2275 | } | |
2276 | ||
2277 | /* Utility equality function for a stmt_list_hash. */ | |
2278 | ||
2279 | static int | |
2280 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2281 | const struct stmt_list_hash *rhs) | |
2282 | { | |
2283 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2284 | return 0; | |
2285 | if (lhs->dwo_unit != NULL | |
2286 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2287 | return 0; | |
2288 | ||
9c541725 | 2289 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2290 | } |
2291 | ||
7b9f3c50 DE |
2292 | /* Hash function for a quick_file_names. */ |
2293 | ||
2294 | static hashval_t | |
2295 | hash_file_name_entry (const void *e) | |
2296 | { | |
9a3c8263 SM |
2297 | const struct quick_file_names *file_data |
2298 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2299 | |
094b34ac | 2300 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2301 | } |
2302 | ||
2303 | /* Equality function for a quick_file_names. */ | |
2304 | ||
2305 | static int | |
2306 | eq_file_name_entry (const void *a, const void *b) | |
2307 | { | |
9a3c8263 SM |
2308 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2309 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2310 | |
094b34ac | 2311 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2312 | } |
2313 | ||
2314 | /* Delete function for a quick_file_names. */ | |
2315 | ||
2316 | static void | |
2317 | delete_file_name_entry (void *e) | |
2318 | { | |
9a3c8263 | 2319 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2320 | int i; |
2321 | ||
2322 | for (i = 0; i < file_data->num_file_names; ++i) | |
2323 | { | |
2324 | xfree ((void*) file_data->file_names[i]); | |
2325 | if (file_data->real_names) | |
2326 | xfree ((void*) file_data->real_names[i]); | |
2327 | } | |
2328 | ||
45940949 TT |
2329 | /* The space for the struct itself lives on the obstack, so we don't |
2330 | free it here. */ | |
7b9f3c50 DE |
2331 | } |
2332 | ||
2333 | /* Create a quick_file_names hash table. */ | |
2334 | ||
5895093f | 2335 | static htab_up |
7b9f3c50 DE |
2336 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2337 | { | |
5895093f TT |
2338 | return htab_up (htab_create_alloc (nr_initial_entries, |
2339 | hash_file_name_entry, eq_file_name_entry, | |
2340 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2341 | } |
9291a0cd | 2342 | |
ab432490 SM |
2343 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2344 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2345 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2346 | |
1b555f17 | 2347 | static dwarf2_cu * |
ab432490 SM |
2348 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2349 | bool skip_partial) | |
918dd910 | 2350 | { |
3019eac3 | 2351 | if (per_cu->is_debug_types) |
ab432490 | 2352 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2353 | else |
ab432490 | 2354 | load_full_comp_unit (per_cu, per_objfile, skip_partial, language_minimal); |
918dd910 | 2355 | |
7188ed02 SM |
2356 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2357 | if (cu == nullptr) | |
1b555f17 | 2358 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2359 | |
7188ed02 | 2360 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2361 | |
7188ed02 | 2362 | return cu; |
918dd910 JK |
2363 | } |
2364 | ||
97a1449a | 2365 | /* Read in the symbols for PER_CU in the context of DWARF"_PER_OBJFILE. */ |
2fdf6df6 | 2366 | |
9291a0cd | 2367 | static void |
97a1449a SM |
2368 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
2369 | dwarf2_per_objfile *dwarf2_per_objfile, | |
2370 | bool skip_partial) | |
9291a0cd | 2371 | { |
f4dc4d17 DE |
2372 | /* Skip type_unit_groups, reading the type units they contain |
2373 | is handled elsewhere. */ | |
197400e8 | 2374 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2375 | return; |
2376 | ||
b303c6f6 AB |
2377 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2378 | the queue. After this point we're guaranteed to leave this function | |
2379 | with the dwarf queue empty. */ | |
39856def | 2380 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2381 | |
af758d11 | 2382 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) |
95554aad | 2383 | { |
120ce1b5 | 2384 | queue_comp_unit (per_cu, dwarf2_per_objfile, language_minimal); |
1b555f17 | 2385 | dwarf2_cu *cu = load_cu (per_cu, dwarf2_per_objfile, skip_partial); |
89e63ee4 DE |
2386 | |
2387 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2388 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2389 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2390 | if (!per_cu->is_debug_types | |
1b555f17 SM |
2391 | && cu != NULL |
2392 | && cu->dwo_unit != NULL | |
5989a64e SM |
2393 | && dwarf2_per_objfile->per_bfd->index_table != NULL |
2394 | && dwarf2_per_objfile->per_bfd->index_table->version <= 7 | |
89e63ee4 | 2395 | /* DWP files aren't supported yet. */ |
ed2dc618 | 2396 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
1b555f17 | 2397 | queue_and_load_all_dwo_tus (cu); |
95554aad | 2398 | } |
9291a0cd | 2399 | |
ed2dc618 | 2400 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2401 | |
2402 | /* Age the cache, releasing compilation units that have not | |
2403 | been used recently. */ | |
7188ed02 | 2404 | dwarf2_per_objfile->age_comp_units (); |
9291a0cd TT |
2405 | } |
2406 | ||
97a1449a SM |
2407 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2408 | the per-objfile for which this symtab is instantiated. | |
2409 | ||
2410 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2411 | |
43f3e411 | 2412 | static struct compunit_symtab * |
97a1449a SM |
2413 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
2414 | dwarf2_per_objfile *dwarf2_per_objfile, | |
2415 | bool skip_partial) | |
9291a0cd | 2416 | { |
5989a64e | 2417 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
af758d11 SM |
2418 | |
2419 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) | |
9291a0cd | 2420 | { |
11ed8cad | 2421 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2422 | scoped_restore decrementer = increment_reading_symtab (); |
97a1449a | 2423 | dw2_do_instantiate_symtab (per_cu, dwarf2_per_objfile, skip_partial); |
ed2dc618 | 2424 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2425 | } |
f194fefb | 2426 | |
af758d11 | 2427 | return dwarf2_per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2428 | } |
2429 | ||
ff4c9fec | 2430 | /* See declaration. */ |
f4dc4d17 | 2431 | |
ff4c9fec | 2432 | dwarf2_per_cu_data * |
5989a64e | 2433 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2434 | { |
b76e467d | 2435 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2436 | { |
b76e467d | 2437 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2438 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2439 | return &this->all_type_units[index]->per_cu; |
2440 | } | |
f4dc4d17 | 2441 | |
ff4c9fec SM |
2442 | return this->all_comp_units[index]; |
2443 | } | |
f4dc4d17 | 2444 | |
ff4c9fec | 2445 | /* See declaration. */ |
2fdf6df6 | 2446 | |
ff4c9fec | 2447 | dwarf2_per_cu_data * |
5989a64e | 2448 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2449 | { |
b76e467d | 2450 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2451 | |
ff4c9fec | 2452 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2453 | } |
2454 | ||
ff4c9fec | 2455 | /* See declaration. */ |
f4dc4d17 | 2456 | |
ff4c9fec | 2457 | signatured_type * |
5989a64e | 2458 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2459 | { |
b2bdb8cf | 2460 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2461 | |
ff4c9fec | 2462 | return this->all_type_units[index]; |
1fd400ff TT |
2463 | } |
2464 | ||
d3473f0c TT |
2465 | /* See read.h. */ |
2466 | ||
2467 | dwarf2_per_cu_data * | |
5989a64e | 2468 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2469 | { |
2470 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2471 | result->per_bfd = this; |
d3473f0c TT |
2472 | result->index = m_num_psymtabs++; |
2473 | return result; | |
2474 | } | |
2475 | ||
2476 | /* See read.h. */ | |
2477 | ||
2478 | signatured_type * | |
5989a64e | 2479 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2480 | { |
2481 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2482 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2483 | result->per_cu.index = m_num_psymtabs++; |
2484 | return result; | |
2485 | } | |
2486 | ||
168c9250 | 2487 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2488 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2489 | |
2490 | static dwarf2_per_cu_data * | |
168c9250 SM |
2491 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2492 | struct dwarf2_section_info *section, | |
2493 | int is_dwz, | |
2494 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2495 | { |
168c9250 | 2496 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2497 | the_cu->sect_off = sect_off; |
2498 | the_cu->length = length; | |
4b514bc8 | 2499 | the_cu->section = section; |
168c9250 | 2500 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2501 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2502 | the_cu->is_dwz = is_dwz; |
2503 | return the_cu; | |
2504 | } | |
2505 | ||
2ec9a5e0 TT |
2506 | /* A helper for create_cus_from_index that handles a given list of |
2507 | CUs. */ | |
2fdf6df6 | 2508 | |
74a0d9f6 | 2509 | static void |
168c9250 | 2510 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2511 | const gdb_byte *cu_list, offset_type n_elements, |
2512 | struct dwarf2_section_info *section, | |
b76e467d | 2513 | int is_dwz) |
9291a0cd | 2514 | { |
12359b5e | 2515 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2516 | { |
74a0d9f6 | 2517 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2518 | |
2519 | sect_offset sect_off | |
2520 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2521 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2522 | cu_list += 2 * 8; |
2523 | ||
b76e467d | 2524 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2525 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2526 | length); | |
2527 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2528 | } |
9291a0cd TT |
2529 | } |
2530 | ||
2ec9a5e0 | 2531 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2532 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2533 | |
74a0d9f6 | 2534 | static void |
168c9250 | 2535 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2536 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2537 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2538 | { | |
168c9250 SM |
2539 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2540 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2541 | |
168c9250 SM |
2542 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2543 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2544 | |
2545 | if (dwz_elements == 0) | |
74a0d9f6 | 2546 | return; |
2ec9a5e0 | 2547 | |
168c9250 SM |
2548 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2549 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2550 | &dwz->info, 1); |
2ec9a5e0 TT |
2551 | } |
2552 | ||
1fd400ff | 2553 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2554 | |
74a0d9f6 | 2555 | static void |
12359b5e | 2556 | create_signatured_type_table_from_index |
168c9250 SM |
2557 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2558 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2559 | { |
168c9250 SM |
2560 | gdb_assert (per_bfd->all_type_units.empty ()); |
2561 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2562 | |
298e9637 | 2563 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2564 | |
12359b5e | 2565 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2566 | { |
52dc124a | 2567 | struct signatured_type *sig_type; |
9c541725 | 2568 | ULONGEST signature; |
1fd400ff | 2569 | void **slot; |
9c541725 | 2570 | cu_offset type_offset_in_tu; |
1fd400ff | 2571 | |
74a0d9f6 | 2572 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2573 | sect_offset sect_off |
2574 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2575 | type_offset_in_tu | |
2576 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2577 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2578 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2579 | bytes += 3 * 8; | |
2580 | ||
168c9250 | 2581 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2582 | sig_type->signature = signature; |
9c541725 | 2583 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2584 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2585 | sig_type->per_cu.section = section; |
9c541725 | 2586 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2587 | sig_type->per_cu.v.quick |
168c9250 | 2588 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2589 | struct dwarf2_per_cu_quick_data); |
2590 | ||
b0b6a987 | 2591 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2592 | *slot = sig_type; |
1fd400ff | 2593 | |
168c9250 | 2594 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2595 | } |
2596 | ||
168c9250 | 2597 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2598 | } |
2599 | ||
927aa2e7 JK |
2600 | /* Create the signatured type hash table from .debug_names. */ |
2601 | ||
2602 | static void | |
2603 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 2604 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2605 | const mapped_debug_names &map, |
2606 | struct dwarf2_section_info *section, | |
2607 | struct dwarf2_section_info *abbrev_section) | |
2608 | { | |
ed2dc618 SM |
2609 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2610 | ||
96b79293 TT |
2611 | section->read (objfile); |
2612 | abbrev_section->read (objfile); | |
927aa2e7 | 2613 | |
5989a64e SM |
2614 | gdb_assert (dwarf2_per_objfile->per_bfd->all_type_units.empty ()); |
2615 | dwarf2_per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2616 | |
298e9637 | 2617 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2618 | |
2619 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2620 | { | |
2621 | struct signatured_type *sig_type; | |
927aa2e7 | 2622 | void **slot; |
927aa2e7 JK |
2623 | |
2624 | sect_offset sect_off | |
2625 | = (sect_offset) (extract_unsigned_integer | |
2626 | (map.tu_table_reordered + i * map.offset_size, | |
2627 | map.offset_size, | |
2628 | map.dwarf5_byte_order)); | |
2629 | ||
2630 | comp_unit_head cu_header; | |
ed2dc618 SM |
2631 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
2632 | abbrev_section, | |
927aa2e7 JK |
2633 | section->buffer + to_underlying (sect_off), |
2634 | rcuh_kind::TYPE); | |
2635 | ||
5989a64e | 2636 | sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2637 | sig_type->signature = cu_header.signature; |
2638 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2639 | sig_type->per_cu.is_debug_types = 1; | |
2640 | sig_type->per_cu.section = section; | |
2641 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2642 | sig_type->per_cu.v.quick |
5989a64e | 2643 | = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2644 | struct dwarf2_per_cu_quick_data); |
2645 | ||
b0b6a987 | 2646 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2647 | *slot = sig_type; |
2648 | ||
5989a64e | 2649 | dwarf2_per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2650 | } |
2651 | ||
5989a64e | 2652 | dwarf2_per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2653 | } |
2654 | ||
9291a0cd TT |
2655 | /* Read the address map data from the mapped index, and use it to |
2656 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2657 | |
9291a0cd | 2658 | static void |
ed2dc618 SM |
2659 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2660 | struct mapped_index *index) | |
9291a0cd | 2661 | { |
ed2dc618 | 2662 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 2663 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2664 | const gdb_byte *iter, *end; |
9291a0cd | 2665 | struct addrmap *mutable_map; |
9291a0cd TT |
2666 | CORE_ADDR baseaddr; |
2667 | ||
8268c778 PA |
2668 | auto_obstack temp_obstack; |
2669 | ||
9291a0cd TT |
2670 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2671 | ||
f00a2de2 PA |
2672 | iter = index->address_table.data (); |
2673 | end = iter + index->address_table.size (); | |
9291a0cd | 2674 | |
b3b3bada | 2675 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2676 | |
2677 | while (iter < end) | |
2678 | { | |
2679 | ULONGEST hi, lo, cu_index; | |
2680 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2681 | iter += 8; | |
2682 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2683 | iter += 8; | |
2684 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2685 | iter += 4; | |
f652bce2 | 2686 | |
24a55014 | 2687 | if (lo > hi) |
f652bce2 | 2688 | { |
b98664d3 | 2689 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2690 | hex_string (lo), hex_string (hi)); |
24a55014 | 2691 | continue; |
f652bce2 | 2692 | } |
24a55014 | 2693 | |
5989a64e | 2694 | if (cu_index >= dwarf2_per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2695 | { |
b98664d3 | 2696 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2697 | (unsigned) cu_index); |
24a55014 | 2698 | continue; |
f652bce2 | 2699 | } |
24a55014 | 2700 | |
79748972 TT |
2701 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2702 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2703 | addrmap_set_empty (mutable_map, lo, hi - 1, |
5989a64e | 2704 | dwarf2_per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2705 | } |
2706 | ||
d320c2b5 | 2707 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2708 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2709 | } |
2710 | ||
927aa2e7 JK |
2711 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2712 | populate the objfile's psymtabs_addrmap. */ | |
2713 | ||
2714 | static void | |
ed2dc618 | 2715 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2716 | struct dwarf2_section_info *section) |
2717 | { | |
ed2dc618 | 2718 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 | 2719 | bfd *abfd = objfile->obfd; |
08feed99 | 2720 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2721 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2722 | |
2723 | auto_obstack temp_obstack; | |
2724 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2725 | ||
2726 | std::unordered_map<sect_offset, | |
2727 | dwarf2_per_cu_data *, | |
2728 | gdb::hash_enum<sect_offset>> | |
2729 | debug_info_offset_to_per_cu; | |
5989a64e | 2730 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2731 | { |
927aa2e7 JK |
2732 | const auto insertpair |
2733 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2734 | if (!insertpair.second) | |
2735 | { | |
2736 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2737 | "debug_info_offset %s, ignoring .debug_aranges."), |
2738 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2739 | return; |
2740 | } | |
2741 | } | |
2742 | ||
96b79293 | 2743 | section->read (objfile); |
927aa2e7 JK |
2744 | |
2745 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2746 | ||
2747 | const gdb_byte *addr = section->buffer; | |
2748 | ||
2749 | while (addr < section->buffer + section->size) | |
2750 | { | |
2751 | const gdb_byte *const entry_addr = addr; | |
2752 | unsigned int bytes_read; | |
2753 | ||
2754 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2755 | &bytes_read); | |
2756 | addr += bytes_read; | |
2757 | ||
2758 | const gdb_byte *const entry_end = addr + entry_length; | |
2759 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2760 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2761 | if (addr + entry_length > section->buffer + section->size) | |
2762 | { | |
47e3f474 | 2763 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2764 | "length %s exceeds section length %s, " |
2765 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2766 | objfile_name (objfile), |
2767 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2768 | plongest (bytes_read + entry_length), |
2769 | pulongest (section->size)); | |
2770 | return; | |
2771 | } | |
2772 | ||
2773 | /* The version number. */ | |
2774 | const uint16_t version = read_2_bytes (abfd, addr); | |
2775 | addr += 2; | |
2776 | if (version != 2) | |
2777 | { | |
47e3f474 | 2778 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2779 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2780 | objfile_name (objfile), |
2781 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2782 | return; |
2783 | } | |
2784 | ||
2785 | const uint64_t debug_info_offset | |
2786 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2787 | addr += offset_size; | |
2788 | const auto per_cu_it | |
2789 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2790 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2791 | { | |
47e3f474 | 2792 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2793 | "debug_info_offset %s does not exists, " |
2794 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2795 | objfile_name (objfile), |
2796 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2797 | pulongest (debug_info_offset)); |
2798 | return; | |
2799 | } | |
2800 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2801 | ||
2802 | const uint8_t address_size = *addr++; | |
2803 | if (address_size < 1 || address_size > 8) | |
2804 | { | |
47e3f474 | 2805 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2806 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2807 | objfile_name (objfile), |
2808 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2809 | return; |
2810 | } | |
2811 | ||
2812 | const uint8_t segment_selector_size = *addr++; | |
2813 | if (segment_selector_size != 0) | |
2814 | { | |
47e3f474 | 2815 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2816 | "segment_selector_size %u is not supported, " |
2817 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2818 | objfile_name (objfile), |
2819 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2820 | segment_selector_size); |
2821 | return; | |
2822 | } | |
2823 | ||
2824 | /* Must pad to an alignment boundary that is twice the address | |
2825 | size. It is undocumented by the DWARF standard but GCC does | |
2826 | use it. */ | |
2827 | for (size_t padding = ((-(addr - section->buffer)) | |
2828 | & (2 * address_size - 1)); | |
2829 | padding > 0; padding--) | |
2830 | if (*addr++ != 0) | |
2831 | { | |
47e3f474 | 2832 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2833 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2834 | objfile_name (objfile), |
2835 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2836 | return; |
2837 | } | |
2838 | ||
2839 | for (;;) | |
2840 | { | |
2841 | if (addr + 2 * address_size > entry_end) | |
2842 | { | |
47e3f474 | 2843 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2844 | "address list is not properly terminated, " |
2845 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2846 | objfile_name (objfile), |
2847 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2848 | return; |
2849 | } | |
2850 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2851 | dwarf5_byte_order); | |
2852 | addr += address_size; | |
2853 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2854 | dwarf5_byte_order); | |
2855 | addr += address_size; | |
2856 | if (start == 0 && length == 0) | |
2857 | break; | |
5989a64e | 2858 | if (start == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
2859 | { |
2860 | /* Symbol was eliminated due to a COMDAT group. */ | |
2861 | continue; | |
2862 | } | |
2863 | ULONGEST end = start + length; | |
79748972 TT |
2864 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2865 | - baseaddr); | |
2866 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2867 | - baseaddr); | |
927aa2e7 JK |
2868 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2869 | } | |
2870 | } | |
2871 | ||
d320c2b5 | 2872 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2873 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2874 | } |
2875 | ||
9291a0cd TT |
2876 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2877 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2878 | constant pool and return true. If NAME cannot be found, return |
2879 | false. */ | |
2fdf6df6 | 2880 | |
109483d9 | 2881 | static bool |
9291a0cd TT |
2882 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2883 | offset_type **vec_out) | |
2884 | { | |
0cf03b49 | 2885 | offset_type hash; |
9291a0cd | 2886 | offset_type slot, step; |
559a7a62 | 2887 | int (*cmp) (const char *, const char *); |
9291a0cd | 2888 | |
791afaa2 | 2889 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2890 | if (current_language->la_language == language_cplus |
45280282 IB |
2891 | || current_language->la_language == language_fortran |
2892 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2893 | { |
2894 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2895 | not contain any. */ | |
a8719064 | 2896 | |
72998fb3 | 2897 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2898 | { |
109483d9 | 2899 | without_params = cp_remove_params (name); |
0cf03b49 | 2900 | |
72998fb3 | 2901 | if (without_params != NULL) |
791afaa2 | 2902 | name = without_params.get (); |
0cf03b49 JK |
2903 | } |
2904 | } | |
2905 | ||
559a7a62 | 2906 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2907 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2908 | simulate our NAME being searched is also lowercased. */ |
2909 | hash = mapped_index_string_hash ((index->version == 4 | |
2910 | && case_sensitivity == case_sensitive_off | |
2911 | ? 5 : index->version), | |
2912 | name); | |
2913 | ||
f00a2de2 PA |
2914 | slot = hash & (index->symbol_table.size () - 1); |
2915 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2916 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2917 | |
2918 | for (;;) | |
2919 | { | |
9291a0cd | 2920 | const char *str; |
f00a2de2 PA |
2921 | |
2922 | const auto &bucket = index->symbol_table[slot]; | |
2923 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2924 | return false; |
9291a0cd | 2925 | |
f00a2de2 | 2926 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2927 | if (!cmp (name, str)) |
9291a0cd TT |
2928 | { |
2929 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2930 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2931 | return true; |
9291a0cd TT |
2932 | } |
2933 | ||
f00a2de2 | 2934 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2935 | } |
2936 | } | |
2937 | ||
4485a1c1 SM |
2938 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2939 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2940 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2941 | ok to use deprecated sections. |
2942 | ||
2943 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2944 | out parameters that are filled in with information about the CU and | |
2945 | TU lists in the section. | |
2946 | ||
4485a1c1 | 2947 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2948 | |
d33bc52e | 2949 | static bool |
3810f182 | 2950 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2951 | bool deprecated_ok, |
2952 | gdb::array_view<const gdb_byte> buffer, | |
2953 | struct mapped_index *map, | |
2954 | const gdb_byte **cu_list, | |
2955 | offset_type *cu_list_elements, | |
2956 | const gdb_byte **types_list, | |
2957 | offset_type *types_list_elements) | |
2958 | { | |
2959 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 2960 | |
9291a0cd | 2961 | /* Version check. */ |
4485a1c1 | 2962 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2963 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2964 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2965 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2966 | indices. */ |
831adc1f | 2967 | if (version < 4) |
481860b3 GB |
2968 | { |
2969 | static int warning_printed = 0; | |
2970 | if (!warning_printed) | |
2971 | { | |
2972 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2973 | filename); |
481860b3 GB |
2974 | warning_printed = 1; |
2975 | } | |
2976 | return 0; | |
2977 | } | |
2978 | /* Index version 4 uses a different hash function than index version | |
2979 | 5 and later. | |
2980 | ||
2981 | Versions earlier than 6 did not emit psymbols for inlined | |
2982 | functions. Using these files will cause GDB not to be able to | |
2983 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2984 | indices unless the user has done |
2985 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2986 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2987 | { |
2988 | static int warning_printed = 0; | |
2989 | if (!warning_printed) | |
2990 | { | |
e615022a DE |
2991 | warning (_("\ |
2992 | Skipping deprecated .gdb_index section in %s.\n\ | |
2993 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2994 | to use the section anyway."), | |
2ec9a5e0 | 2995 | filename); |
481860b3 GB |
2996 | warning_printed = 1; |
2997 | } | |
2998 | return 0; | |
2999 | } | |
796a7ff8 | 3000 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3001 | of the TU (for symbols coming from TUs), |
3002 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3003 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3004 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3005 | These are just performance bugs, and we can't distinguish gdb-generated | |
3006 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3007 | |
481860b3 | 3008 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3009 | longer backward compatible. */ |
796a7ff8 | 3010 | if (version > 8) |
594e8718 | 3011 | return 0; |
9291a0cd | 3012 | |
559a7a62 | 3013 | map->version = version; |
9291a0cd | 3014 | |
4485a1c1 | 3015 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3016 | |
4485a1c1 | 3017 | int i = 0; |
2ec9a5e0 TT |
3018 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3019 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3020 | / 8); | |
1fd400ff TT |
3021 | ++i; |
3022 | ||
2ec9a5e0 TT |
3023 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3024 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3025 | - MAYBE_SWAP (metadata[i])) | |
3026 | / 8); | |
987d643c | 3027 | ++i; |
1fd400ff | 3028 | |
f00a2de2 PA |
3029 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3030 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3031 | map->address_table | |
3032 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3033 | ++i; |
3034 | ||
f00a2de2 PA |
3035 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3036 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3037 | map->symbol_table | |
3038 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3039 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3040 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3041 | |
f00a2de2 | 3042 | ++i; |
f9d83a0b | 3043 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3044 | |
2ec9a5e0 TT |
3045 | return 1; |
3046 | } | |
3047 | ||
4485a1c1 SM |
3048 | /* Callback types for dwarf2_read_gdb_index. */ |
3049 | ||
3050 | typedef gdb::function_view | |
5989a64e | 3051 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3052 | get_gdb_index_contents_ftype; |
3053 | typedef gdb::function_view | |
3054 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3055 | get_gdb_index_contents_dwz_ftype; | |
3056 | ||
927aa2e7 | 3057 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3058 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3059 | ||
3060 | static int | |
4485a1c1 SM |
3061 | dwarf2_read_gdb_index |
3062 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3063 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3064 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3065 | { |
2ec9a5e0 TT |
3066 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3067 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3068 | struct dwz_file *dwz; |
12359b5e | 3069 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3070 | |
4485a1c1 | 3071 | gdb::array_view<const gdb_byte> main_index_contents |
5989a64e | 3072 | = get_gdb_index_contents (objfile, dwarf2_per_objfile->per_bfd); |
4485a1c1 SM |
3073 | |
3074 | if (main_index_contents.empty ()) | |
3075 | return 0; | |
3076 | ||
3063847f | 3077 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3078 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3079 | use_deprecated_index_sections, |
3080 | main_index_contents, map.get (), &cu_list, | |
3081 | &cu_list_elements, &types_list, | |
3082 | &types_list_elements)) | |
2ec9a5e0 TT |
3083 | return 0; |
3084 | ||
0fefef59 | 3085 | /* Don't use the index if it's empty. */ |
3063847f | 3086 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3087 | return 0; |
3088 | ||
2ec9a5e0 TT |
3089 | /* If there is a .dwz file, read it so we can get its CU list as |
3090 | well. */ | |
c3699833 | 3091 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
4db1a1dc | 3092 | if (dwz != NULL) |
2ec9a5e0 | 3093 | { |
2ec9a5e0 TT |
3094 | struct mapped_index dwz_map; |
3095 | const gdb_byte *dwz_types_ignore; | |
3096 | offset_type dwz_types_elements_ignore; | |
3097 | ||
4485a1c1 SM |
3098 | gdb::array_view<const gdb_byte> dwz_index_content |
3099 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3100 | ||
3101 | if (dwz_index_content.empty ()) | |
3102 | return 0; | |
3103 | ||
3810f182 | 3104 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3105 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3106 | &dwz_list, &dwz_list_elements, |
3107 | &dwz_types_ignore, | |
3108 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3109 | { |
3110 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3111 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3112 | return 0; |
3113 | } | |
3114 | } | |
3115 | ||
168c9250 | 3116 | create_cus_from_index (dwarf2_per_objfile->per_bfd, cu_list, cu_list_elements, |
12359b5e | 3117 | dwz_list, dwz_list_elements); |
1fd400ff | 3118 | |
8b70b953 TT |
3119 | if (types_list_elements) |
3120 | { | |
8b70b953 TT |
3121 | /* We can only handle a single .debug_types when we have an |
3122 | index. */ | |
5989a64e | 3123 | if (dwarf2_per_objfile->per_bfd->types.size () != 1) |
8b70b953 TT |
3124 | return 0; |
3125 | ||
5989a64e | 3126 | dwarf2_section_info *section = &dwarf2_per_objfile->per_bfd->types[0]; |
8b70b953 | 3127 | |
168c9250 SM |
3128 | create_signatured_type_table_from_index (dwarf2_per_objfile->per_bfd, |
3129 | section, types_list, | |
3130 | types_list_elements); | |
8b70b953 | 3131 | } |
9291a0cd | 3132 | |
3063847f | 3133 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3134 | |
5989a64e SM |
3135 | dwarf2_per_objfile->per_bfd->index_table = std::move (map); |
3136 | dwarf2_per_objfile->per_bfd->using_index = 1; | |
3137 | dwarf2_per_objfile->per_bfd->quick_file_names_table = | |
3138 | create_quick_file_names_table (dwarf2_per_objfile->per_bfd->all_comp_units.size ()); | |
9291a0cd TT |
3139 | |
3140 | return 1; | |
3141 | } | |
3142 | ||
dee91e82 | 3143 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3144 | |
dee91e82 DE |
3145 | static void |
3146 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3147 | const gdb_byte *info_ptr, |
3e225074 | 3148 | struct die_info *comp_unit_die) |
9291a0cd | 3149 | { |
dee91e82 | 3150 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3151 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
5e22e966 | 3152 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
094b34ac | 3153 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3154 | struct attribute *attr; |
7b9f3c50 DE |
3155 | void **slot; |
3156 | struct quick_file_names *qfn; | |
9291a0cd | 3157 | |
0186c6a7 DE |
3158 | gdb_assert (! this_cu->is_debug_types); |
3159 | ||
07261596 TT |
3160 | /* Our callers never want to match partial units -- instead they |
3161 | will match the enclosing full CU. */ | |
3162 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3163 | { | |
3164 | this_cu->v.quick->no_file_data = 1; | |
3165 | return; | |
3166 | } | |
3167 | ||
0186c6a7 | 3168 | lh_cu = this_cu; |
7b9f3c50 | 3169 | slot = NULL; |
dee91e82 | 3170 | |
fff8551c | 3171 | line_header_up lh; |
9c541725 | 3172 | sect_offset line_offset {}; |
fff8551c | 3173 | |
dee91e82 | 3174 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3175 | if (attr != nullptr) |
9291a0cd | 3176 | { |
7b9f3c50 DE |
3177 | struct quick_file_names find_entry; |
3178 | ||
9c541725 | 3179 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3180 | |
3181 | /* We may have already read in this line header (TU line header sharing). | |
3182 | If we have we're done. */ | |
094b34ac | 3183 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3184 | find_entry.hash.line_sect_off = line_offset; |
5989a64e | 3185 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3186 | &find_entry, INSERT); |
3187 | if (*slot != NULL) | |
3188 | { | |
9a3c8263 | 3189 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3190 | return; |
7b9f3c50 DE |
3191 | } |
3192 | ||
3019eac3 | 3193 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3194 | } |
3195 | if (lh == NULL) | |
3196 | { | |
094b34ac | 3197 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3198 | return; |
9291a0cd TT |
3199 | } |
3200 | ||
5989a64e | 3201 | qfn = XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3202 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3203 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3204 | gdb_assert (slot != NULL); |
3205 | *slot = qfn; | |
9291a0cd | 3206 | |
d721ba37 | 3207 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3208 | |
aa391654 TT |
3209 | int offset = 0; |
3210 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3211 | ++offset; | |
3212 | ||
7ba99d21 | 3213 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3214 | qfn->file_names = |
5989a64e | 3215 | XOBNEWVEC (&dwarf2_per_objfile->per_bfd->obstack, const char *, |
45940949 | 3216 | qfn->num_file_names); |
aa391654 TT |
3217 | if (offset != 0) |
3218 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3219 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3220 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3221 | fnd.comp_dir).release (); | |
7b9f3c50 | 3222 | qfn->real_names = NULL; |
9291a0cd | 3223 | |
094b34ac | 3224 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3225 | } |
3226 | ||
3227 | /* A helper for the "quick" functions which attempts to read the line | |
3228 | table for THIS_CU. */ | |
3229 | ||
3230 | static struct quick_file_names * | |
ab432490 SM |
3231 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3232 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3233 | { |
0186c6a7 DE |
3234 | /* This should never be called for TUs. */ |
3235 | gdb_assert (! this_cu->is_debug_types); | |
3236 | /* Nor type unit groups. */ | |
197400e8 | 3237 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3238 | |
dee91e82 DE |
3239 | if (this_cu->v.quick->file_names != NULL) |
3240 | return this_cu->v.quick->file_names; | |
3241 | /* If we know there is no line data, no point in looking again. */ | |
3242 | if (this_cu->v.quick->no_file_data) | |
3243 | return NULL; | |
3244 | ||
ab432490 | 3245 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3246 | if (!reader.dummy_p) |
3e225074 | 3247 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3248 | |
3249 | if (this_cu->v.quick->no_file_data) | |
3250 | return NULL; | |
3251 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3252 | } |
3253 | ||
3254 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3255 | real path for a given file name from the line table. */ |
2fdf6df6 | 3256 | |
9291a0cd | 3257 | static const char * |
45940949 | 3258 | dw2_get_real_path (struct dwarf2_per_objfile *dwarf2_per_objfile, |
7b9f3c50 | 3259 | struct quick_file_names *qfn, int index) |
9291a0cd | 3260 | { |
7b9f3c50 | 3261 | if (qfn->real_names == NULL) |
5989a64e | 3262 | qfn->real_names = OBSTACK_CALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
26f2dc30 | 3263 | qfn->num_file_names, const char *); |
9291a0cd | 3264 | |
7b9f3c50 | 3265 | if (qfn->real_names[index] == NULL) |
14278e1f | 3266 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3267 | |
7b9f3c50 | 3268 | return qfn->real_names[index]; |
9291a0cd TT |
3269 | } |
3270 | ||
3271 | static struct symtab * | |
3272 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3273 | { | |
ed2dc618 SM |
3274 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3275 | = get_dwarf2_per_objfile (objfile); | |
5989a64e | 3276 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->per_bfd->all_comp_units.back (); |
97a1449a SM |
3277 | compunit_symtab *cust |
3278 | = dw2_instantiate_symtab (dwarf_cu, dwarf2_per_objfile, false); | |
ae2de4f8 | 3279 | |
43f3e411 DE |
3280 | if (cust == NULL) |
3281 | return NULL; | |
ed2dc618 | 3282 | |
43f3e411 | 3283 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3284 | } |
3285 | ||
7b9f3c50 DE |
3286 | /* Traversal function for dw2_forget_cached_source_info. */ |
3287 | ||
3288 | static int | |
3289 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3290 | { |
7b9f3c50 | 3291 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3292 | |
7b9f3c50 | 3293 | if (file_data->real_names) |
9291a0cd | 3294 | { |
7b9f3c50 | 3295 | int i; |
9291a0cd | 3296 | |
7b9f3c50 | 3297 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3298 | { |
7b9f3c50 DE |
3299 | xfree ((void*) file_data->real_names[i]); |
3300 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3301 | } |
3302 | } | |
7b9f3c50 DE |
3303 | |
3304 | return 1; | |
3305 | } | |
3306 | ||
3307 | static void | |
3308 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3309 | { | |
ed2dc618 SM |
3310 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3311 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 | 3312 | |
5989a64e | 3313 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3314 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3315 | } |
3316 | ||
f8eba3c6 TT |
3317 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3318 | the symtabs and calls the iterator. */ | |
3319 | ||
3320 | static int | |
3321 | dw2_map_expand_apply (struct objfile *objfile, | |
3322 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3323 | const char *name, const char *real_path, |
14bc53a8 | 3324 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3325 | { |
43f3e411 | 3326 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3327 | |
3328 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3329 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3330 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3331 | return 0; |
3332 | ||
3333 | /* This may expand more than one symtab, and we want to iterate over | |
3334 | all of them. */ | |
97a1449a | 3335 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3336 | |
14bc53a8 PA |
3337 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3338 | last_made, callback); | |
f8eba3c6 TT |
3339 | } |
3340 | ||
3341 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3342 | ||
14bc53a8 PA |
3343 | static bool |
3344 | dw2_map_symtabs_matching_filename | |
3345 | (struct objfile *objfile, const char *name, const char *real_path, | |
3346 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3347 | { |
c011a4f4 | 3348 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3349 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3350 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3351 | |
848e3e78 DE |
3352 | /* The rule is CUs specify all the files, including those used by |
3353 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3354 | |
5989a64e | 3355 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3356 | { |
3d7bb9d9 | 3357 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 3358 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3359 | continue; |
3360 | ||
ab432490 SM |
3361 | quick_file_names *file_data |
3362 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
7b9f3c50 | 3363 | if (file_data == NULL) |
9291a0cd TT |
3364 | continue; |
3365 | ||
b76e467d | 3366 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3367 | { |
7b9f3c50 | 3368 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3369 | const char *this_real_name; |
9291a0cd | 3370 | |
af529f8f | 3371 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3372 | { |
f5b95b50 | 3373 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3374 | callback)) |
3375 | return true; | |
288e77a7 | 3376 | continue; |
4aac40c8 | 3377 | } |
9291a0cd | 3378 | |
c011a4f4 DE |
3379 | /* Before we invoke realpath, which can get expensive when many |
3380 | files are involved, do a quick comparison of the basenames. */ | |
3381 | if (! basenames_may_differ | |
3382 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3383 | continue; | |
3384 | ||
45940949 TT |
3385 | this_real_name = dw2_get_real_path (dwarf2_per_objfile, |
3386 | 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 SM |
3418 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3419 | struct dwarf2_per_objfile *dwarf2_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, |
ed2dc618 | 3443 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3444 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3445 | domain_enum domain, |
3446 | const char *name) | |
3447 | { | |
ed2dc618 | 3448 | iter->dwarf2_per_objfile = dwarf2_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 | |
5989a64e | 3454 | mapped_index *index = dwarf2_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 | { | |
ed2dc618 SM |
3471 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
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 = | |
5989a64e | 3485 | (dwarf2_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. */ |
5989a64e SM |
3489 | if (cu_index >= (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3490 | + dwarf2_per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3491 | { |
b98664d3 | 3492 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3493 | " [in module %s]"), |
3494 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3495 | continue; |
3496 | } | |
3497 | ||
5989a64e | 3498 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3499 | |
da51c347 | 3500 | /* Skip if already read in. */ |
af758d11 | 3501 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3502 | continue; |
3503 | ||
8943b874 DE |
3504 | /* Check static vs global. */ |
3505 | if (attrs_valid) | |
3506 | { | |
2b79f376 SM |
3507 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3508 | ||
3509 | if (iter->block_index.has_value ()) | |
3510 | { | |
3511 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3512 | ||
3513 | if (is_static != want_static) | |
3514 | continue; | |
3515 | } | |
3516 | ||
8943b874 DE |
3517 | /* Work around gold/15646. */ |
3518 | if (!is_static && iter->global_seen) | |
3519 | continue; | |
3520 | if (!is_static) | |
3521 | iter->global_seen = 1; | |
3522 | } | |
da51c347 DE |
3523 | |
3524 | /* Only check the symbol's kind if it has one. */ | |
3525 | if (attrs_valid) | |
3526 | { | |
3527 | switch (iter->domain) | |
3528 | { | |
3529 | case VAR_DOMAIN: | |
3530 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3531 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3532 | /* Some types are also in VAR_DOMAIN. */ | |
3533 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3534 | continue; | |
3535 | break; | |
3536 | case STRUCT_DOMAIN: | |
3537 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3538 | continue; | |
3539 | break; | |
3540 | case LABEL_DOMAIN: | |
3541 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3542 | continue; | |
3543 | break; | |
59c35742 AB |
3544 | case MODULE_DOMAIN: |
3545 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3546 | continue; | |
3547 | break; | |
da51c347 DE |
3548 | default: |
3549 | break; | |
3550 | } | |
3551 | } | |
3552 | ||
3553 | ++iter->next; | |
3554 | return per_cu; | |
3555 | } | |
3556 | ||
3557 | return NULL; | |
3558 | } | |
3559 | ||
43f3e411 | 3560 | static struct compunit_symtab * |
c7f839cb | 3561 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3562 | const char *name, domain_enum domain) |
9291a0cd | 3563 | { |
43f3e411 | 3564 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
3565 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3566 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3567 | |
b5ec771e PA |
3568 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3569 | ||
ed2dc618 SM |
3570 | struct dw2_symtab_iterator iter; |
3571 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3572 | |
2b79f376 | 3573 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 3574 | |
ed2dc618 SM |
3575 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3576 | { | |
3577 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a SM |
3578 | struct compunit_symtab *stab |
3579 | = dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); | |
ed2dc618 | 3580 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3581 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3582 | |
ed2dc618 SM |
3583 | sym = block_find_symbol (block, name, domain, |
3584 | block_find_non_opaque_type_preferred, | |
3585 | &with_opaque); | |
b2e2f908 | 3586 | |
ed2dc618 SM |
3587 | /* Some caution must be observed with overloaded functions |
3588 | and methods, since the index will not contain any overload | |
3589 | information (but NAME might contain it). */ | |
da51c347 | 3590 | |
ed2dc618 SM |
3591 | if (sym != NULL |
3592 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3593 | return stab; | |
3594 | if (with_opaque != NULL | |
3595 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3596 | stab_best = stab; | |
da51c347 | 3597 | |
ed2dc618 | 3598 | /* Keep looking through other CUs. */ |
9291a0cd | 3599 | } |
9291a0cd | 3600 | |
da51c347 | 3601 | return stab_best; |
9291a0cd TT |
3602 | } |
3603 | ||
3604 | static void | |
3605 | dw2_print_stats (struct objfile *objfile) | |
3606 | { | |
ed2dc618 SM |
3607 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3608 | = get_dwarf2_per_objfile (objfile); | |
5989a64e SM |
3609 | int total = (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3610 | + dwarf2_per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3611 | int count = 0; |
9291a0cd | 3612 | |
ed2dc618 | 3613 | for (int i = 0; i < total; ++i) |
9291a0cd | 3614 | { |
5989a64e | 3615 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3616 | |
af758d11 | 3617 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3618 | ++count; |
3619 | } | |
e4a48d9d | 3620 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3621 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3622 | } | |
3623 | ||
779bd270 DE |
3624 | /* This dumps minimal information about the index. |
3625 | It is called via "mt print objfiles". | |
3626 | One use is to verify .gdb_index has been loaded by the | |
3627 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3628 | ||
9291a0cd TT |
3629 | static void |
3630 | dw2_dump (struct objfile *objfile) | |
3631 | { | |
ed2dc618 SM |
3632 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3633 | = get_dwarf2_per_objfile (objfile); | |
3634 | ||
5989a64e | 3635 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
779bd270 | 3636 | printf_filtered (".gdb_index:"); |
5989a64e | 3637 | if (dwarf2_per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3638 | { |
3639 | printf_filtered (" version %d\n", | |
5989a64e | 3640 | dwarf2_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 | { | |
ed2dc618 SM |
3651 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3652 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 3653 | |
ed2dc618 SM |
3654 | struct dw2_symtab_iterator iter; |
3655 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3656 | |
2b79f376 | 3657 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3658 | |
ed2dc618 | 3659 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
97a1449a | 3660 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
da51c347 | 3661 | |
9291a0cd TT |
3662 | } |
3663 | ||
3664 | static void | |
3665 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3666 | { | |
ed2dc618 SM |
3667 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3668 | = get_dwarf2_per_objfile (objfile); | |
5989a64e SM |
3669 | int total_units = (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3670 | + dwarf2_per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3671 | |
ed2dc618 | 3672 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3673 | { |
5989a64e | 3674 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3675 | |
58f0c718 TT |
3676 | /* We don't want to directly expand a partial CU, because if we |
3677 | read it with the wrong language, then assertion failures can | |
3678 | be triggered later on. See PR symtab/23010. So, tell | |
3679 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3680 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
97a1449a | 3681 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, true); |
9291a0cd TT |
3682 | } |
3683 | } | |
3684 | ||
3685 | static void | |
652a8996 JK |
3686 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3687 | const char *fullname) | |
9291a0cd | 3688 | { |
ed2dc618 SM |
3689 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3690 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
3691 | |
3692 | /* We don't need to consider type units here. | |
3693 | This is only called for examining code, e.g. expand_line_sal. | |
3694 | There can be an order of magnitude (or more) more type units | |
3695 | than comp units, and we avoid them if we can. */ | |
3696 | ||
5989a64e | 3697 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3698 | { |
3d7bb9d9 | 3699 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 3700 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3701 | continue; |
3702 | ||
ab432490 SM |
3703 | quick_file_names *file_data |
3704 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
7b9f3c50 | 3705 | if (file_data == NULL) |
9291a0cd TT |
3706 | continue; |
3707 | ||
b76e467d | 3708 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3709 | { |
652a8996 JK |
3710 | const char *this_fullname = file_data->file_names[j]; |
3711 | ||
3712 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3713 | { |
97a1449a | 3714 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
9291a0cd TT |
3715 | break; |
3716 | } | |
3717 | } | |
3718 | } | |
3719 | } | |
3720 | ||
9a0bacfb TV |
3721 | static void |
3722 | dw2_expand_symtabs_matching_symbol | |
3723 | (mapped_index_base &index, | |
3724 | const lookup_name_info &lookup_name_in, | |
3725 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3726 | enum search_domain kind, | |
fcf23d5b SM |
3727 | gdb::function_view<bool (offset_type)> match_callback, |
3728 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb TV |
3729 | |
3730 | static void | |
3731 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3732 | (dwarf2_per_cu_data *per_cu, |
3733 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3734 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3735 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3736 | ||
9291a0cd | 3737 | static void |
199b4314 TT |
3738 | dw2_map_matching_symbols |
3739 | (struct objfile *objfile, | |
b054970d | 3740 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3741 | int global, |
3742 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3743 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3744 | { |
1aa98955 TV |
3745 | /* Used for Ada. */ |
3746 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
3747 | = get_dwarf2_per_objfile (objfile); | |
3748 | ||
9a0bacfb TV |
3749 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3750 | ||
5989a64e | 3751 | if (dwarf2_per_objfile->per_bfd->index_table != nullptr) |
1aa98955 TV |
3752 | { |
3753 | /* Ada currently doesn't support .gdb_index (see PR24713). We can get | |
3754 | here though if the current language is Ada for a non-Ada objfile | |
9a0bacfb | 3755 | using GNU index. */ |
5989a64e | 3756 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
1aa98955 | 3757 | |
9a0bacfb TV |
3758 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3759 | auto matcher = [&] (const char *symname) | |
3760 | { | |
3761 | if (ordered_compare == nullptr) | |
3762 | return true; | |
3763 | return ordered_compare (symname, match_name) == 0; | |
3764 | }; | |
3765 | ||
3766 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3767 | [&] (offset_type namei) | |
3768 | { | |
3769 | struct dw2_symtab_iterator iter; | |
3770 | struct dwarf2_per_cu_data *per_cu; | |
3771 | ||
3772 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_kind, domain, | |
3773 | match_name); | |
3774 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
97a1449a SM |
3775 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, nullptr, |
3776 | nullptr); | |
9a0bacfb | 3777 | return true; |
fcf23d5b | 3778 | }, dwarf2_per_objfile); |
9a0bacfb TV |
3779 | } |
3780 | else | |
3781 | { | |
3782 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3783 | proceed assuming all symtabs have been read in. */ | |
3784 | } | |
1aa98955 TV |
3785 | |
3786 | for (compunit_symtab *cust : objfile->compunits ()) | |
3787 | { | |
3788 | const struct block *block; | |
3789 | ||
3790 | if (cust == NULL) | |
3791 | continue; | |
3792 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3793 | if (!iterate_over_symbols_terminated (block, name, | |
3794 | domain, callback)) | |
3795 | return; | |
3796 | } | |
9291a0cd TT |
3797 | } |
3798 | ||
e1ef7d7a PA |
3799 | /* Starting from a search name, return the string that finds the upper |
3800 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3801 | list. Returns the empty string to indicate that the upper bound is | |
3802 | the end of the list. */ | |
3803 | ||
3804 | static std::string | |
3805 | make_sort_after_prefix_name (const char *search_name) | |
3806 | { | |
3807 | /* When looking to complete "func", we find the upper bound of all | |
3808 | symbols that start with "func" by looking for where we'd insert | |
3809 | the closest string that would follow "func" in lexicographical | |
3810 | order. Usually, that's "func"-with-last-character-incremented, | |
3811 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3812 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3813 | Especially mind the 0xff character, which is a valid character in | |
3814 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3815 | rule out compilers allowing it in identifiers. Note that | |
3816 | conveniently, strcmp/strcasecmp are specified to compare | |
3817 | characters interpreted as unsigned char. So what we do is treat | |
3818 | the whole string as a base 256 number composed of a sequence of | |
3819 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3820 | to 0, and carries 1 to the following more-significant position. | |
3821 | If the very first character in SEARCH_NAME ends up incremented | |
3822 | and carries/overflows, then the upper bound is the end of the | |
3823 | list. The string after the empty string is also the empty | |
3824 | string. | |
3825 | ||
3826 | Some examples of this operation: | |
3827 | ||
3828 | SEARCH_NAME => "+1" RESULT | |
3829 | ||
3830 | "abc" => "abd" | |
3831 | "ab\xff" => "ac" | |
3832 | "\xff" "a" "\xff" => "\xff" "b" | |
3833 | "\xff" => "" | |
3834 | "\xff\xff" => "" | |
3835 | "" => "" | |
3836 | ||
3837 | Then, with these symbols for example: | |
3838 | ||
3839 | func | |
3840 | func1 | |
3841 | fund | |
3842 | ||
3843 | completing "func" looks for symbols between "func" and | |
3844 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3845 | which finds "func" and "func1", but not "fund". | |
3846 | ||
3847 | And with: | |
3848 | ||
3849 | funcÿ (Latin1 'ÿ' [0xff]) | |
3850 | funcÿ1 | |
3851 | fund | |
3852 | ||
3853 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3854 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3855 | ||
3856 | And with: | |
3857 | ||
3858 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3859 | ÿÿ1 | |
3860 | ||
3861 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3862 | the end of the list. | |
3863 | */ | |
3864 | std::string after = search_name; | |
3865 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3866 | after.pop_back (); | |
3867 | if (!after.empty ()) | |
3868 | after.back () = (unsigned char) after.back () + 1; | |
3869 | return after; | |
3870 | } | |
3871 | ||
5c58de74 | 3872 | /* See declaration. */ |
61d96d7e | 3873 | |
5c58de74 PA |
3874 | std::pair<std::vector<name_component>::const_iterator, |
3875 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3876 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
3877 | (const lookup_name_info &lookup_name_without_params, language lang, |
3878 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 3879 | { |
5c58de74 PA |
3880 | auto *name_cmp |
3881 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3882 | |
3b00ef10 | 3883 | const char *lang_name |
e0802d59 | 3884 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3885 | |
3f563c84 PA |
3886 | /* Comparison function object for lower_bound that matches against a |
3887 | given symbol name. */ | |
3888 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3889 | const char *name) | |
3890 | { | |
fcf23d5b | 3891 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3892 | const char *elem_name = elem_qualified + elem.name_offset; |
3893 | return name_cmp (elem_name, name) < 0; | |
3894 | }; | |
3895 | ||
3896 | /* Comparison function object for upper_bound that matches against a | |
3897 | given symbol name. */ | |
3898 | auto lookup_compare_upper = [&] (const char *name, | |
3899 | const name_component &elem) | |
3900 | { | |
fcf23d5b | 3901 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3902 | const char *elem_name = elem_qualified + elem.name_offset; |
3903 | return name_cmp (name, elem_name) < 0; | |
3904 | }; | |
3905 | ||
5c58de74 PA |
3906 | auto begin = this->name_components.begin (); |
3907 | auto end = this->name_components.end (); | |
3f563c84 PA |
3908 | |
3909 | /* Find the lower bound. */ | |
3910 | auto lower = [&] () | |
3911 | { | |
3b00ef10 | 3912 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3913 | return begin; |
3914 | else | |
3b00ef10 | 3915 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3916 | } (); |
3917 | ||
3918 | /* Find the upper bound. */ | |
3919 | auto upper = [&] () | |
3920 | { | |
5c58de74 | 3921 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3922 | { |
e1ef7d7a PA |
3923 | /* In completion mode, we want UPPER to point past all |
3924 | symbols names that have the same prefix. I.e., with | |
3925 | these symbols, and completing "func": | |
3926 | ||
3927 | function << lower bound | |
3928 | function1 | |
3929 | other_function << upper bound | |
3930 | ||
3931 | We find the upper bound by looking for the insertion | |
3932 | point of "func"-with-last-character-incremented, | |
3933 | i.e. "fund". */ | |
3b00ef10 | 3934 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3935 | if (after.empty ()) |
3f563c84 | 3936 | return end; |
e6b2f5ef PA |
3937 | return std::lower_bound (lower, end, after.c_str (), |
3938 | lookup_compare_lower); | |
3f563c84 PA |
3939 | } |
3940 | else | |
3b00ef10 | 3941 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3942 | } (); |
3943 | ||
5c58de74 PA |
3944 | return {lower, upper}; |
3945 | } | |
3946 | ||
3947 | /* See declaration. */ | |
3948 | ||
3949 | void | |
fcf23d5b | 3950 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
3951 | { |
3952 | if (!this->name_components.empty ()) | |
3953 | return; | |
3954 | ||
3955 | this->name_components_casing = case_sensitivity; | |
3956 | auto *name_cmp | |
3957 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3958 | ||
3959 | /* The code below only knows how to break apart components of C++ | |
3960 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3961 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3962 | auto count = this->symbol_name_count (); |
3963 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3964 | { |
44ed8f3e | 3965 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3966 | continue; |
3967 | ||
fcf23d5b | 3968 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
3969 | |
3970 | /* Add each name component to the name component table. */ | |
3971 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3972 | |
3973 | if (strstr (name, "::") != nullptr) | |
3974 | { | |
3975 | for (unsigned int current_len = cp_find_first_component (name); | |
3976 | name[current_len] != '\0'; | |
3977 | current_len += cp_find_first_component (name + current_len)) | |
3978 | { | |
3979 | gdb_assert (name[current_len] == ':'); | |
3980 | this->name_components.push_back ({previous_len, idx}); | |
3981 | /* Skip the '::'. */ | |
3982 | current_len += 2; | |
3983 | previous_len = current_len; | |
3984 | } | |
3985 | } | |
3986 | else | |
5c58de74 | 3987 | { |
3b00ef10 TT |
3988 | /* Handle the Ada encoded (aka mangled) form here. */ |
3989 | for (const char *iter = strstr (name, "__"); | |
3990 | iter != nullptr; | |
3991 | iter = strstr (iter, "__")) | |
3992 | { | |
3993 | this->name_components.push_back ({previous_len, idx}); | |
3994 | iter += 2; | |
3995 | previous_len = iter - name; | |
3996 | } | |
5c58de74 | 3997 | } |
3b00ef10 | 3998 | |
5c58de74 PA |
3999 | this->name_components.push_back ({previous_len, idx}); |
4000 | } | |
4001 | ||
4002 | /* Sort name_components elements by name. */ | |
4003 | auto name_comp_compare = [&] (const name_component &left, | |
4004 | const name_component &right) | |
4005 | { | |
fcf23d5b SM |
4006 | const char *left_qualified |
4007 | = this->symbol_name_at (left.idx, per_objfile); | |
4008 | const char *right_qualified | |
4009 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
4010 | |
4011 | const char *left_name = left_qualified + left.name_offset; | |
4012 | const char *right_name = right_qualified + right.name_offset; | |
4013 | ||
4014 | return name_cmp (left_name, right_name) < 0; | |
4015 | }; | |
4016 | ||
4017 | std::sort (this->name_components.begin (), | |
4018 | this->name_components.end (), | |
4019 | name_comp_compare); | |
4020 | } | |
4021 | ||
4022 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4023 | mapped_index_base instead of the containing objfile. This is split |
4024 | to a separate function in order to be able to unit test the | |
4025 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4026 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4027 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4028 | |
4029 | static void | |
4030 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4031 | (mapped_index_base &index, |
5c58de74 PA |
4032 | const lookup_name_info &lookup_name_in, |
4033 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4034 | enum search_domain kind, | |
fcf23d5b SM |
4035 | gdb::function_view<bool (offset_type)> match_callback, |
4036 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4037 | { |
4038 | lookup_name_info lookup_name_without_params | |
4039 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4040 | |
4041 | /* Build the symbol name component sorted vector, if we haven't | |
4042 | yet. */ | |
fcf23d5b | 4043 | index.build_name_components (per_objfile); |
5c58de74 | 4044 | |
3f563c84 PA |
4045 | /* The same symbol may appear more than once in the range though. |
4046 | E.g., if we're looking for symbols that complete "w", and we have | |
4047 | a symbol named "w1::w2", we'll find the two name components for | |
4048 | that same symbol in the range. To be sure we only call the | |
4049 | callback once per symbol, we first collect the symbol name | |
4050 | indexes that matched in a temporary vector and ignore | |
4051 | duplicates. */ | |
4052 | std::vector<offset_type> matches; | |
3f563c84 | 4053 | |
3b00ef10 TT |
4054 | struct name_and_matcher |
4055 | { | |
4056 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4057 | const char *name; |
3b00ef10 TT |
4058 | |
4059 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4060 | { |
ecc6c606 | 4061 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4062 | } |
4063 | }; | |
4064 | ||
4065 | /* A vector holding all the different symbol name matchers, for all | |
4066 | languages. */ | |
4067 | std::vector<name_and_matcher> matchers; | |
4068 | ||
4069 | for (int i = 0; i < nr_languages; i++) | |
4070 | { | |
4071 | enum language lang_e = (enum language) i; | |
4072 | ||
4073 | const language_defn *lang = language_def (lang_e); | |
4074 | symbol_name_matcher_ftype *name_matcher | |
4075 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 4076 | |
3b00ef10 TT |
4077 | name_and_matcher key { |
4078 | name_matcher, | |
4079 | lookup_name_without_params.language_lookup_name (lang_e) | |
4080 | }; | |
4081 | ||
4082 | /* Don't insert the same comparison routine more than once. | |
4083 | Note that we do this linear walk. This is not a problem in | |
4084 | practice because the number of supported languages is | |
4085 | low. */ | |
4086 | if (std::find (matchers.begin (), matchers.end (), key) | |
4087 | != matchers.end ()) | |
9291a0cd | 4088 | continue; |
3b00ef10 TT |
4089 | matchers.push_back (std::move (key)); |
4090 | ||
4091 | auto bounds | |
4092 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 4093 | lang_e, per_objfile); |
3b00ef10 TT |
4094 | |
4095 | /* Now for each symbol name in range, check to see if we have a name | |
4096 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4097 | ||
4098 | for (; bounds.first != bounds.second; ++bounds.first) | |
4099 | { | |
fcf23d5b SM |
4100 | const char *qualified |
4101 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
4102 | |
4103 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4104 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4105 | continue; | |
9291a0cd | 4106 | |
3b00ef10 TT |
4107 | matches.push_back (bounds.first->idx); |
4108 | } | |
3f563c84 PA |
4109 | } |
4110 | ||
4111 | std::sort (matches.begin (), matches.end ()); | |
4112 | ||
4113 | /* Finally call the callback, once per match. */ | |
4114 | ULONGEST prev = -1; | |
4115 | for (offset_type idx : matches) | |
4116 | { | |
4117 | if (prev != idx) | |
4118 | { | |
3b00ef10 TT |
4119 | if (!match_callback (idx)) |
4120 | break; | |
3f563c84 PA |
4121 | prev = idx; |
4122 | } | |
4123 | } | |
4124 | ||
4125 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4126 | (offset_type)-1 are both possible values. */ | |
4127 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4128 | } | |
4129 | ||
c62446b1 PA |
4130 | #if GDB_SELF_TEST |
4131 | ||
4132 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4133 | ||
a3c5fafd PA |
4134 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4135 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4136 | mapped_index_base interface. Builds an index from the symbol list | |
4137 | passed as parameter to the constructor. */ | |
4138 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4139 | { |
4140 | public: | |
a3c5fafd PA |
4141 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4142 | : m_symbol_table (symbols) | |
c62446b1 PA |
4143 | {} |
4144 | ||
a3c5fafd | 4145 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4146 | |
a3c5fafd | 4147 | /* Return the number of names in the symbol table. */ |
632e107b | 4148 | size_t symbol_name_count () const override |
c62446b1 | 4149 | { |
a3c5fafd | 4150 | return m_symbol_table.size (); |
c62446b1 PA |
4151 | } |
4152 | ||
a3c5fafd | 4153 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
4154 | const char *symbol_name_at |
4155 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
4156 | { |
4157 | return m_symbol_table[idx]; | |
4158 | } | |
c62446b1 | 4159 | |
a3c5fafd PA |
4160 | private: |
4161 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4162 | }; |
4163 | ||
4164 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4165 | string, to pass to print routines. */ | |
4166 | ||
4167 | static const char * | |
4168 | string_or_null (const char *str) | |
4169 | { | |
4170 | return str != NULL ? str : "<null>"; | |
4171 | } | |
4172 | ||
4173 | /* Check if a lookup_name_info built from | |
4174 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4175 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4176 | matching order. If no match expected, then an empty list is | |
4177 | specified. Returns true on success. On failure prints a warning | |
4178 | indicating the file:line that failed, and returns false. */ | |
4179 | ||
4180 | static bool | |
4181 | check_match (const char *file, int line, | |
4182 | mock_mapped_index &mock_index, | |
4183 | const char *name, symbol_name_match_type match_type, | |
4184 | bool completion_mode, | |
fcf23d5b SM |
4185 | std::initializer_list<const char *> expected_list, |
4186 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4187 | { |
4188 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4189 | ||
4190 | bool matched = true; | |
4191 | ||
4192 | auto mismatch = [&] (const char *expected_str, | |
4193 | const char *got) | |
4194 | { | |
4195 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4196 | "expected=\"%s\", got=\"%s\"\n"), | |
4197 | file, line, | |
4198 | (match_type == symbol_name_match_type::FULL | |
4199 | ? "FULL" : "WILD"), | |
4200 | name, string_or_null (expected_str), string_or_null (got)); | |
4201 | matched = false; | |
4202 | }; | |
4203 | ||
4204 | auto expected_it = expected_list.begin (); | |
4205 | auto expected_end = expected_list.end (); | |
4206 | ||
a3c5fafd | 4207 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4208 | NULL, ALL_DOMAIN, |
4209 | [&] (offset_type idx) | |
4210 | { | |
fcf23d5b | 4211 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4212 | const char *expected_str |
4213 | = expected_it == expected_end ? NULL : *expected_it++; | |
4214 | ||
4215 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4216 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4217 | return true; |
fcf23d5b | 4218 | }, per_objfile); |
c62446b1 PA |
4219 | |
4220 | const char *expected_str | |
4221 | = expected_it == expected_end ? NULL : *expected_it++; | |
4222 | if (expected_str != NULL) | |
4223 | mismatch (expected_str, NULL); | |
4224 | ||
4225 | return matched; | |
4226 | } | |
4227 | ||
4228 | /* The symbols added to the mock mapped_index for testing (in | |
4229 | canonical form). */ | |
4230 | static const char *test_symbols[] = { | |
4231 | "function", | |
4232 | "std::bar", | |
4233 | "std::zfunction", | |
4234 | "std::zfunction2", | |
4235 | "w1::w2", | |
4236 | "ns::foo<char*>", | |
4237 | "ns::foo<int>", | |
4238 | "ns::foo<long>", | |
a20714ff PA |
4239 | "ns2::tmpl<int>::foo2", |
4240 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4241 | |
e1ef7d7a PA |
4242 | /* These are used to check that the increment-last-char in the |
4243 | matching algorithm for completion doesn't match "t1_fund" when | |
4244 | completing "t1_func". */ | |
4245 | "t1_func", | |
4246 | "t1_func1", | |
4247 | "t1_fund", | |
4248 | "t1_fund1", | |
4249 | ||
4250 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4251 | cp-name-parser understands this as a single identifier ("função" | |
4252 | is "function" in PT). */ | |
4253 | u8"u8função", | |
4254 | ||
4255 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4256 | "yfunc\377", | |
4257 | ||
4258 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4259 | "\377", | |
4260 | "\377\377123", | |
4261 | ||
c62446b1 PA |
4262 | /* A name with all sorts of complications. Starts with "z" to make |
4263 | it easier for the completion tests below. */ | |
4264 | #define Z_SYM_NAME \ | |
4265 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4266 | "::tuple<(anonymous namespace)::ui*, " \ | |
4267 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4268 | ||
4269 | Z_SYM_NAME | |
4270 | }; | |
4271 | ||
a3c5fafd PA |
4272 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4273 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4274 | in completion mode. */ | |
5c58de74 PA |
4275 | |
4276 | static bool | |
a3c5fafd | 4277 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4278 | const char *search_name, |
fcf23d5b SM |
4279 | gdb::array_view<const char *> expected_syms, |
4280 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4281 | { |
4282 | lookup_name_info lookup_name (search_name, | |
4283 | symbol_name_match_type::FULL, true); | |
4284 | ||
3b00ef10 | 4285 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4286 | language_cplus, |
4287 | per_objfile); | |
5c58de74 PA |
4288 | |
4289 | size_t distance = std::distance (bounds.first, bounds.second); | |
4290 | if (distance != expected_syms.size ()) | |
4291 | return false; | |
4292 | ||
4293 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4294 | { | |
4295 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4296 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4297 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4298 | return false; | |
4299 | } | |
4300 | ||
4301 | return true; | |
4302 | } | |
4303 | ||
4304 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4305 | method. */ | |
4306 | ||
c62446b1 | 4307 | static void |
5c58de74 PA |
4308 | test_mapped_index_find_name_component_bounds () |
4309 | { | |
4310 | mock_mapped_index mock_index (test_symbols); | |
4311 | ||
fcf23d5b | 4312 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4313 | |
4314 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4315 | method in completion mode. */ | |
4316 | { | |
4317 | static const char *expected_syms[] = { | |
4318 | "t1_func", | |
4319 | "t1_func1", | |
5c58de74 PA |
4320 | }; |
4321 | ||
fcf23d5b SM |
4322 | SELF_CHECK (check_find_bounds_finds |
4323 | (mock_index, "t1_func", expected_syms, | |
4324 | NULL /* per_objfile */)); | |
5c58de74 PA |
4325 | } |
4326 | ||
4327 | /* Check that the increment-last-char in the name matching algorithm | |
4328 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4329 | { | |
4330 | static const char *expected_syms1[] = { | |
4331 | "\377", | |
4332 | "\377\377123", | |
4333 | }; | |
fcf23d5b SM |
4334 | SELF_CHECK (check_find_bounds_finds |
4335 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4336 | |
4337 | static const char *expected_syms2[] = { | |
4338 | "\377\377123", | |
4339 | }; | |
fcf23d5b SM |
4340 | SELF_CHECK (check_find_bounds_finds |
4341 | (mock_index, "\377\377", expected_syms2, | |
4342 | NULL /* per_objfile */)); | |
5c58de74 PA |
4343 | } |
4344 | } | |
4345 | ||
4346 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4347 | ||
4348 | static void | |
4349 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4350 | { |
4351 | mock_mapped_index mock_index (test_symbols); | |
4352 | ||
4353 | /* We let all tests run until the end even if some fails, for debug | |
4354 | convenience. */ | |
4355 | bool any_mismatch = false; | |
4356 | ||
4357 | /* Create the expected symbols list (an initializer_list). Needed | |
4358 | because lists have commas, and we need to pass them to CHECK, | |
4359 | which is a macro. */ | |
4360 | #define EXPECT(...) { __VA_ARGS__ } | |
4361 | ||
4362 | /* Wrapper for check_match that passes down the current | |
4363 | __FILE__/__LINE__. */ | |
4364 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4365 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4366 | mock_index, \ | |
4367 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4368 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4369 | |
4370 | /* Identity checks. */ | |
4371 | for (const char *sym : test_symbols) | |
4372 | { | |
4373 | /* Should be able to match all existing symbols. */ | |
4374 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4375 | EXPECT (sym)); | |
4376 | ||
4377 | /* Should be able to match all existing symbols with | |
4378 | parameters. */ | |
4379 | std::string with_params = std::string (sym) + "(int)"; | |
4380 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4381 | EXPECT (sym)); | |
4382 | ||
4383 | /* Should be able to match all existing symbols with | |
4384 | parameters and qualifiers. */ | |
4385 | with_params = std::string (sym) + " ( int ) const"; | |
4386 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4387 | EXPECT (sym)); | |
4388 | ||
4389 | /* This should really find sym, but cp-name-parser.y doesn't | |
4390 | know about lvalue/rvalue qualifiers yet. */ | |
4391 | with_params = std::string (sym) + " ( int ) &&"; | |
4392 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4393 | {}); | |
4394 | } | |
4395 | ||
e1ef7d7a PA |
4396 | /* Check that the name matching algorithm for completion doesn't get |
4397 | confused with Latin1 'ÿ' / 0xff. */ | |
4398 | { | |
4399 | static const char str[] = "\377"; | |
4400 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4401 | EXPECT ("\377", "\377\377123")); | |
4402 | } | |
4403 | ||
4404 | /* Check that the increment-last-char in the matching algorithm for | |
4405 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4406 | { | |
4407 | static const char str[] = "t1_func"; | |
4408 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4409 | EXPECT ("t1_func", "t1_func1")); | |
4410 | } | |
4411 | ||
c62446b1 PA |
4412 | /* Check that completion mode works at each prefix of the expected |
4413 | symbol name. */ | |
4414 | { | |
4415 | static const char str[] = "function(int)"; | |
4416 | size_t len = strlen (str); | |
4417 | std::string lookup; | |
4418 | ||
4419 | for (size_t i = 1; i < len; i++) | |
4420 | { | |
4421 | lookup.assign (str, i); | |
4422 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4423 | EXPECT ("function")); | |
4424 | } | |
4425 | } | |
4426 | ||
4427 | /* While "w" is a prefix of both components, the match function | |
4428 | should still only be called once. */ | |
4429 | { | |
4430 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4431 | EXPECT ("w1::w2")); | |
a20714ff PA |
4432 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4433 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4434 | } |
4435 | ||
4436 | /* Same, with a "complicated" symbol. */ | |
4437 | { | |
4438 | static const char str[] = Z_SYM_NAME; | |
4439 | size_t len = strlen (str); | |
4440 | std::string lookup; | |
4441 | ||
4442 | for (size_t i = 1; i < len; i++) | |
4443 | { | |
4444 | lookup.assign (str, i); | |
4445 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4446 | EXPECT (Z_SYM_NAME)); | |
4447 | } | |
4448 | } | |
4449 | ||
4450 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4451 | { | |
4452 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4453 | {}); | |
4454 | } | |
4455 | ||
4456 | /* A complete symbol with parameters matches any overload, since the | |
4457 | index has no overload info. */ | |
4458 | { | |
4459 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4460 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4461 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4462 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4463 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4464 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4465 | } |
4466 | ||
4467 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4468 | template argument list. */ | |
4469 | { | |
4470 | static const char expected[] = "ns::foo<int>"; | |
4471 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4472 | EXPECT (expected)); | |
a20714ff PA |
4473 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4474 | EXPECT (expected)); | |
c62446b1 PA |
4475 | } |
4476 | ||
4477 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4478 | template argument list that includes a pointer. */ | |
4479 | { | |
4480 | static const char expected[] = "ns::foo<char*>"; | |
4481 | /* Try both completion and non-completion modes. */ | |
4482 | static const bool completion_mode[2] = {false, true}; | |
4483 | for (size_t i = 0; i < 2; i++) | |
4484 | { | |
4485 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4486 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4487 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4488 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4489 | |
4490 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4491 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4492 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4493 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4494 | } |
4495 | } | |
4496 | ||
4497 | { | |
4498 | /* Check method qualifiers are ignored. */ | |
4499 | static const char expected[] = "ns::foo<char*>"; | |
4500 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4501 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4502 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4503 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4504 | CHECK_MATCH ("foo < char * > ( int ) const", |
4505 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4506 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4507 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4508 | } |
4509 | ||
4510 | /* Test lookup names that don't match anything. */ | |
4511 | { | |
a20714ff PA |
4512 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4513 | {}); | |
4514 | ||
c62446b1 PA |
4515 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4516 | {}); | |
4517 | } | |
4518 | ||
a20714ff PA |
4519 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4520 | which should not be confused with a parameter list. */ | |
4521 | { | |
4522 | static const char *syms[] = { | |
4523 | "A::B::C", | |
4524 | "B::C", | |
4525 | "C", | |
4526 | "A :: B :: C ( int )", | |
4527 | "B :: C ( int )", | |
4528 | "C ( int )", | |
4529 | }; | |
4530 | ||
4531 | for (const char *s : syms) | |
4532 | { | |
4533 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4534 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4535 | } | |
4536 | } | |
4537 | ||
4538 | { | |
4539 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4540 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4541 | EXPECT (expected)); | |
4542 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4543 | EXPECT (expected)); | |
4544 | } | |
4545 | ||
c62446b1 PA |
4546 | SELF_CHECK (!any_mismatch); |
4547 | ||
4548 | #undef EXPECT | |
4549 | #undef CHECK_MATCH | |
4550 | } | |
4551 | ||
5c58de74 PA |
4552 | static void |
4553 | run_test () | |
4554 | { | |
4555 | test_mapped_index_find_name_component_bounds (); | |
4556 | test_dw2_expand_symtabs_matching_symbol (); | |
4557 | } | |
4558 | ||
c62446b1 PA |
4559 | }} // namespace selftests::dw2_expand_symtabs_matching |
4560 | ||
4561 | #endif /* GDB_SELF_TEST */ | |
4562 | ||
4b514bc8 JK |
4563 | /* If FILE_MATCHER is NULL or if PER_CU has |
4564 | dwarf2_per_cu_quick_data::MARK set (see | |
4565 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4566 | EXPANSION_NOTIFY on it. */ | |
4567 | ||
4568 | static void | |
4569 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4570 | (dwarf2_per_cu_data *per_cu, |
4571 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4572 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4573 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4574 | { | |
4575 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4576 | { | |
af758d11 | 4577 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4578 | |
97a1449a SM |
4579 | compunit_symtab *symtab |
4580 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4581 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4582 | |
af758d11 SM |
4583 | if (expansion_notify != NULL && symtab_was_null) |
4584 | expansion_notify (symtab); | |
4b514bc8 JK |
4585 | } |
4586 | } | |
4587 | ||
3f563c84 PA |
4588 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4589 | matched, to expand corresponding CUs that were marked. IDX is the | |
4590 | index of the symbol name that matched. */ | |
4591 | ||
4592 | static void | |
4593 | dw2_expand_marked_cus | |
97a1449a | 4594 | (dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4595 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4596 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4597 | search_domain kind) | |
4598 | { | |
3f563c84 PA |
4599 | offset_type *vec, vec_len, vec_idx; |
4600 | bool global_seen = false; | |
5989a64e | 4601 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
3f563c84 | 4602 | |
61920122 | 4603 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4604 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4605 | vec_len = MAYBE_SWAP (vec[0]); |
4606 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4607 | { | |
61920122 PA |
4608 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4609 | /* This value is only valid for index versions >= 7. */ | |
4610 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4611 | gdb_index_symbol_kind symbol_kind = | |
4612 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4613 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4614 | /* Only check the symbol attributes if they're present. | |
4615 | Indices prior to version 7 don't record them, | |
4616 | and indices >= 7 may elide them for certain symbols | |
4617 | (gold does this). */ | |
4618 | int attrs_valid = | |
4619 | (index.version >= 7 | |
4620 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4621 | ||
4622 | /* Work around gold/15646. */ | |
4623 | if (attrs_valid) | |
9291a0cd | 4624 | { |
61920122 PA |
4625 | if (!is_static && global_seen) |
4626 | continue; | |
4627 | if (!is_static) | |
4628 | global_seen = true; | |
4629 | } | |
3190f0c6 | 4630 | |
61920122 PA |
4631 | /* Only check the symbol's kind if it has one. */ |
4632 | if (attrs_valid) | |
4633 | { | |
4634 | switch (kind) | |
8943b874 | 4635 | { |
61920122 PA |
4636 | case VARIABLES_DOMAIN: |
4637 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4638 | continue; | |
4639 | break; | |
4640 | case FUNCTIONS_DOMAIN: | |
4641 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4642 | continue; |
61920122 PA |
4643 | break; |
4644 | case TYPES_DOMAIN: | |
4645 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4646 | continue; | |
4647 | break; | |
59c35742 AB |
4648 | case MODULES_DOMAIN: |
4649 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4650 | continue; | |
4651 | break; | |
61920122 PA |
4652 | default: |
4653 | break; | |
8943b874 | 4654 | } |
61920122 | 4655 | } |
8943b874 | 4656 | |
61920122 | 4657 | /* Don't crash on bad data. */ |
5989a64e SM |
4658 | if (cu_index >= (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
4659 | + dwarf2_per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4660 | { |
b98664d3 | 4661 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
4662 | " [in module %s]"), |
4663 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
4664 | continue; |
4665 | } | |
4666 | ||
5989a64e | 4667 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (cu_index); |
97a1449a | 4668 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, file_matcher, |
4b514bc8 | 4669 | expansion_notify); |
61920122 PA |
4670 | } |
4671 | } | |
4672 | ||
4b514bc8 JK |
4673 | /* If FILE_MATCHER is non-NULL, set all the |
4674 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4675 | that match FILE_MATCHER. */ | |
4676 | ||
61920122 | 4677 | static void |
4b514bc8 | 4678 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
4679 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4680 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 4681 | { |
4b514bc8 | 4682 | if (file_matcher == NULL) |
61920122 PA |
4683 | return; |
4684 | ||
4b514bc8 JK |
4685 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4686 | htab_eq_pointer, | |
4687 | NULL, xcalloc, xfree)); | |
4688 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4689 | htab_eq_pointer, |
4690 | NULL, xcalloc, xfree)); | |
61920122 | 4691 | |
4b514bc8 JK |
4692 | /* The rule is CUs specify all the files, including those used by |
4693 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4694 | |
5989a64e | 4695 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4696 | { |
927aa2e7 JK |
4697 | QUIT; |
4698 | ||
4699 | per_cu->v.quick->mark = 0; | |
4700 | ||
4701 | /* We only need to look at symtabs not already expanded. */ | |
af758d11 | 4702 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4703 | continue; |
4704 | ||
ab432490 SM |
4705 | quick_file_names *file_data |
4706 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
927aa2e7 JK |
4707 | if (file_data == NULL) |
4708 | continue; | |
4709 | ||
4710 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4711 | continue; | |
4712 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4713 | { | |
4714 | per_cu->v.quick->mark = 1; | |
4715 | continue; | |
4716 | } | |
4717 | ||
b76e467d | 4718 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4719 | { |
4720 | const char *this_real_name; | |
4721 | ||
4722 | if (file_matcher (file_data->file_names[j], false)) | |
4723 | { | |
4724 | per_cu->v.quick->mark = 1; | |
4725 | break; | |
4726 | } | |
4727 | ||
4728 | /* Before we invoke realpath, which can get expensive when many | |
4729 | files are involved, do a quick comparison of the basenames. */ | |
4730 | if (!basenames_may_differ | |
4731 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4732 | true)) | |
4733 | continue; | |
4734 | ||
45940949 TT |
4735 | this_real_name = dw2_get_real_path (dwarf2_per_objfile, |
4736 | file_data, j); | |
927aa2e7 JK |
4737 | if (file_matcher (this_real_name, false)) |
4738 | { | |
4739 | per_cu->v.quick->mark = 1; | |
4740 | break; | |
4741 | } | |
4742 | } | |
4743 | ||
b76e467d SM |
4744 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4745 | ? visited_found.get () | |
4746 | : visited_not_found.get (), | |
4747 | file_data, INSERT); | |
927aa2e7 JK |
4748 | *slot = file_data; |
4749 | } | |
4750 | } | |
4751 | ||
4752 | static void | |
4753 | dw2_expand_symtabs_matching | |
4754 | (struct objfile *objfile, | |
4755 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4756 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4757 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4758 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4759 | enum search_domain kind) | |
4760 | { | |
ed2dc618 SM |
4761 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4762 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4763 | |
4764 | /* index_table is NULL if OBJF_READNOW. */ | |
5989a64e | 4765 | if (!dwarf2_per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4766 | return; |
4767 | ||
ed2dc618 | 4768 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 | 4769 | |
c1a66c06 TV |
4770 | if (symbol_matcher == NULL && lookup_name == NULL) |
4771 | { | |
5989a64e | 4772 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4773 | { |
4774 | QUIT; | |
4775 | ||
97a1449a SM |
4776 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
4777 | file_matcher, expansion_notify); | |
c1a66c06 TV |
4778 | } |
4779 | return; | |
4780 | } | |
4781 | ||
5989a64e | 4782 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
927aa2e7 | 4783 | |
c1a66c06 | 4784 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4785 | symbol_matcher, |
4786 | kind, [&] (offset_type idx) | |
4787 | { | |
ed2dc618 | 4788 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 4789 | expansion_notify, kind); |
3b00ef10 | 4790 | return true; |
fcf23d5b | 4791 | }, dwarf2_per_objfile); |
927aa2e7 JK |
4792 | } |
4793 | ||
4794 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4795 | symtab. */ | |
4796 | ||
4797 | static struct compunit_symtab * | |
4798 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4799 | CORE_ADDR pc) | |
4800 | { | |
4801 | int i; | |
4802 | ||
4803 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4804 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4805 | return cust; | |
4806 | ||
4807 | if (cust->includes == NULL) | |
4808 | return NULL; | |
4809 | ||
4810 | for (i = 0; cust->includes[i]; ++i) | |
4811 | { | |
4812 | struct compunit_symtab *s = cust->includes[i]; | |
4813 | ||
4814 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4815 | if (s != NULL) | |
4816 | return s; | |
4817 | } | |
4818 | ||
4819 | return NULL; | |
4820 | } | |
4821 | ||
4822 | static struct compunit_symtab * | |
4823 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4824 | struct bound_minimal_symbol msymbol, | |
4825 | CORE_ADDR pc, | |
4826 | struct obj_section *section, | |
4827 | int warn_if_readin) | |
4828 | { | |
4829 | struct dwarf2_per_cu_data *data; | |
4830 | struct compunit_symtab *result; | |
4831 | ||
d320c2b5 | 4832 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4833 | return NULL; |
4834 | ||
b3b3bada | 4835 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4836 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4837 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4838 | if (!data) |
4839 | return NULL; | |
4840 | ||
af758d11 SM |
4841 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4842 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 4843 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4844 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4845 | |
97a1449a SM |
4846 | result = recursively_find_pc_sect_compunit_symtab |
4847 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4848 | ||
927aa2e7 JK |
4849 | gdb_assert (result != NULL); |
4850 | return result; | |
4851 | } | |
4852 | ||
4853 | static void | |
4854 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4855 | void *data, int need_fullname) | |
4856 | { | |
ed2dc618 SM |
4857 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4858 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 | 4859 | |
5989a64e | 4860 | if (!dwarf2_per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4861 | { |
5989a64e | 4862 | dwarf2_per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4863 | |
4864 | htab_up visited (htab_create_alloc (10, | |
4865 | htab_hash_pointer, htab_eq_pointer, | |
4866 | NULL, xcalloc, xfree)); | |
4867 | ||
4868 | /* The rule is CUs specify all the files, including those used | |
4869 | by any TU, so there's no need to scan TUs here. We can | |
4870 | ignore file names coming from already-expanded CUs. */ | |
4871 | ||
5989a64e | 4872 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4873 | { |
af758d11 | 4874 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4875 | { |
4876 | void **slot = htab_find_slot (visited.get (), | |
4877 | per_cu->v.quick->file_names, | |
4878 | INSERT); | |
4879 | ||
4880 | *slot = per_cu->v.quick->file_names; | |
4881 | } | |
4882 | } | |
4883 | ||
5989a64e | 4884 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4885 | { |
927aa2e7 | 4886 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 4887 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4888 | continue; |
4889 | ||
ab432490 SM |
4890 | quick_file_names *file_data |
4891 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
927aa2e7 JK |
4892 | if (file_data == NULL) |
4893 | continue; | |
4894 | ||
b76e467d | 4895 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4896 | if (*slot) |
4897 | { | |
4898 | /* Already visited. */ | |
4899 | continue; | |
4900 | } | |
4901 | *slot = file_data; | |
4902 | ||
4903 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4904 | { | |
4905 | const char *filename = file_data->file_names[j]; | |
5989a64e | 4906 | dwarf2_per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
4907 | } |
4908 | } | |
4909 | } | |
4910 | ||
5989a64e | 4911 | dwarf2_per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
4912 | { |
4913 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4914 | ||
4915 | if (need_fullname) | |
4916 | this_real_name = gdb_realpath (filename); | |
4917 | (*fun) (filename, this_real_name.get (), data); | |
4918 | }); | |
4919 | } | |
4920 | ||
4921 | static int | |
4922 | dw2_has_symbols (struct objfile *objfile) | |
4923 | { | |
4924 | return 1; | |
4925 | } | |
4926 | ||
4927 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4928 | { | |
4929 | dw2_has_symbols, | |
4930 | dw2_find_last_source_symtab, | |
4931 | dw2_forget_cached_source_info, | |
4932 | dw2_map_symtabs_matching_filename, | |
4933 | dw2_lookup_symbol, | |
d3214198 | 4934 | NULL, |
927aa2e7 JK |
4935 | dw2_print_stats, |
4936 | dw2_dump, | |
927aa2e7 JK |
4937 | dw2_expand_symtabs_for_function, |
4938 | dw2_expand_all_symtabs, | |
4939 | dw2_expand_symtabs_with_fullname, | |
4940 | dw2_map_matching_symbols, | |
4941 | dw2_expand_symtabs_matching, | |
4942 | dw2_find_pc_sect_compunit_symtab, | |
4943 | NULL, | |
4944 | dw2_map_symbol_filenames | |
4945 | }; | |
4946 | ||
4947 | /* DWARF-5 debug_names reader. */ | |
4948 | ||
4949 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4950 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4951 | ||
4952 | /* A helper function that reads the .debug_names section in SECTION | |
4953 | and fills in MAP. FILENAME is the name of the file containing the | |
4954 | section; it is used for error reporting. | |
4955 | ||
4956 | Returns true if all went well, false otherwise. */ | |
4957 | ||
4958 | static bool | |
4959 | read_debug_names_from_section (struct objfile *objfile, | |
4960 | const char *filename, | |
4961 | struct dwarf2_section_info *section, | |
4962 | mapped_debug_names &map) | |
4963 | { | |
96b79293 | 4964 | if (section->empty ()) |
927aa2e7 JK |
4965 | return false; |
4966 | ||
4967 | /* Older elfutils strip versions could keep the section in the main | |
4968 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4969 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4970 | return false; |
4971 | ||
96b79293 | 4972 | section->read (objfile); |
927aa2e7 | 4973 | |
08feed99 | 4974 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
4975 | |
4976 | const gdb_byte *addr = section->buffer; | |
4977 | ||
96b79293 | 4978 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4979 | |
4980 | unsigned int bytes_read; | |
4981 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4982 | addr += bytes_read; | |
4983 | ||
4984 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4985 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4986 | if (bytes_read + length != section->size) | |
4987 | { | |
4988 | /* There may be multiple per-CU indices. */ | |
4989 | warning (_("Section .debug_names in %s length %s does not match " | |
4990 | "section length %s, ignoring .debug_names."), | |
4991 | filename, plongest (bytes_read + length), | |
4992 | pulongest (section->size)); | |
4993 | return false; | |
4994 | } | |
4995 | ||
4996 | /* The version number. */ | |
4997 | uint16_t version = read_2_bytes (abfd, addr); | |
4998 | addr += 2; | |
4999 | if (version != 5) | |
5000 | { | |
5001 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5002 | "ignoring .debug_names."), | |
5003 | filename, version); | |
5004 | return false; | |
5005 | } | |
5006 | ||
5007 | /* Padding. */ | |
5008 | uint16_t padding = read_2_bytes (abfd, addr); | |
5009 | addr += 2; | |
5010 | if (padding != 0) | |
5011 | { | |
5012 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5013 | "ignoring .debug_names."), | |
5014 | filename, padding); | |
5015 | return false; | |
5016 | } | |
5017 | ||
5018 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5019 | map.cu_count = read_4_bytes (abfd, addr); | |
5020 | addr += 4; | |
5021 | ||
5022 | /* local_type_unit_count - The number of TUs in the local TU | |
5023 | list. */ | |
5024 | map.tu_count = read_4_bytes (abfd, addr); | |
5025 | addr += 4; | |
5026 | ||
5027 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5028 | list. */ | |
5029 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5030 | addr += 4; | |
5031 | if (foreign_tu_count != 0) | |
5032 | { | |
5033 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5034 | "ignoring .debug_names."), | |
5035 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5036 | return false; | |
5037 | } | |
5038 | ||
5039 | /* bucket_count - The number of hash buckets in the hash lookup | |
5040 | table. */ | |
5041 | map.bucket_count = read_4_bytes (abfd, addr); | |
5042 | addr += 4; | |
5043 | ||
5044 | /* name_count - The number of unique names in the index. */ | |
5045 | map.name_count = read_4_bytes (abfd, addr); | |
5046 | addr += 4; | |
5047 | ||
5048 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5049 | table. */ | |
5050 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5051 | addr += 4; | |
5052 | ||
5053 | /* augmentation_string_size - The size in bytes of the augmentation | |
5054 | string. This value is rounded up to a multiple of 4. */ | |
5055 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5056 | addr += 4; | |
5057 | map.augmentation_is_gdb = ((augmentation_string_size | |
5058 | == sizeof (dwarf5_augmentation)) | |
5059 | && memcmp (addr, dwarf5_augmentation, | |
5060 | sizeof (dwarf5_augmentation)) == 0); | |
5061 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5062 | addr += augmentation_string_size; | |
5063 | ||
5064 | /* List of CUs */ | |
5065 | map.cu_table_reordered = addr; | |
5066 | addr += map.cu_count * map.offset_size; | |
5067 | ||
5068 | /* List of Local TUs */ | |
5069 | map.tu_table_reordered = addr; | |
5070 | addr += map.tu_count * map.offset_size; | |
5071 | ||
5072 | /* Hash Lookup Table */ | |
5073 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5074 | addr += map.bucket_count * 4; | |
5075 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5076 | addr += map.name_count * 4; | |
5077 | ||
5078 | /* Name Table */ | |
5079 | map.name_table_string_offs_reordered = addr; | |
5080 | addr += map.name_count * map.offset_size; | |
5081 | map.name_table_entry_offs_reordered = addr; | |
5082 | addr += map.name_count * map.offset_size; | |
5083 | ||
5084 | const gdb_byte *abbrev_table_start = addr; | |
5085 | for (;;) | |
5086 | { | |
927aa2e7 JK |
5087 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5088 | addr += bytes_read; | |
5089 | if (index_num == 0) | |
5090 | break; | |
5091 | ||
5092 | const auto insertpair | |
5093 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5094 | if (!insertpair.second) | |
5095 | { | |
5096 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5097 | "ignoring .debug_names."), | |
5098 | filename, pulongest (index_num)); | |
5099 | return false; | |
5100 | } | |
5101 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5102 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5103 | addr += bytes_read; | |
5104 | ||
5105 | for (;;) | |
5106 | { | |
5107 | mapped_debug_names::index_val::attr attr; | |
5108 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5109 | addr += bytes_read; | |
5110 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5111 | addr += bytes_read; | |
5112 | if (attr.form == DW_FORM_implicit_const) | |
5113 | { | |
5114 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5115 | &bytes_read); | |
5116 | addr += bytes_read; | |
5117 | } | |
5118 | if (attr.dw_idx == 0 && attr.form == 0) | |
5119 | break; | |
5120 | indexval.attr_vec.push_back (std::move (attr)); | |
5121 | } | |
5122 | } | |
5123 | if (addr != abbrev_table_start + abbrev_table_size) | |
5124 | { | |
5125 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5126 | "of size %s vs. written as %u, ignoring .debug_names."), |
5127 | filename, plongest (addr - abbrev_table_start), | |
5128 | abbrev_table_size); | |
927aa2e7 JK |
5129 | return false; |
5130 | } | |
5131 | map.entry_pool = addr; | |
5132 | ||
5133 | return true; | |
5134 | } | |
5135 | ||
5136 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5137 | list. */ | |
5138 | ||
5139 | static void | |
168c9250 | 5140 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5141 | const mapped_debug_names &map, |
5142 | dwarf2_section_info §ion, | |
b76e467d | 5143 | bool is_dwz) |
927aa2e7 | 5144 | { |
3ee6bb11 TV |
5145 | if (!map.augmentation_is_gdb) |
5146 | { | |
5147 | for (uint32_t i = 0; i < map.cu_count; ++i) | |
5148 | { | |
5149 | sect_offset sect_off | |
5150 | = (sect_offset) (extract_unsigned_integer | |
5151 | (map.cu_table_reordered + i * map.offset_size, | |
5152 | map.offset_size, | |
5153 | map.dwarf5_byte_order)); | |
5154 | /* We don't know the length of the CU, because the CU list in a | |
5155 | .debug_names index can be incomplete, so we can't use the start of | |
5156 | the next CU as end of this CU. We create the CUs here with length 0, | |
5157 | and in cutu_reader::cutu_reader we'll fill in the actual length. */ | |
5158 | dwarf2_per_cu_data *per_cu | |
168c9250 SM |
5159 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, sect_off, 0); |
5160 | per_bfd->all_comp_units.push_back (per_cu); | |
3ee6bb11 TV |
5161 | } |
5162 | } | |
5163 | ||
927aa2e7 JK |
5164 | sect_offset sect_off_prev; |
5165 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5166 | { | |
5167 | sect_offset sect_off_next; | |
5168 | if (i < map.cu_count) | |
5169 | { | |
5170 | sect_off_next | |
5171 | = (sect_offset) (extract_unsigned_integer | |
5172 | (map.cu_table_reordered + i * map.offset_size, | |
5173 | map.offset_size, | |
5174 | map.dwarf5_byte_order)); | |
5175 | } | |
5176 | else | |
5177 | sect_off_next = (sect_offset) section.size; | |
5178 | if (i >= 1) | |
5179 | { | |
5180 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5181 | dwarf2_per_cu_data *per_cu |
168c9250 | 5182 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5183 | sect_off_prev, length); |
168c9250 | 5184 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5185 | } |
5186 | sect_off_prev = sect_off_next; | |
5187 | } | |
5188 | } | |
5189 | ||
5190 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5191 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5192 | |
5193 | static void | |
168c9250 | 5194 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5195 | const mapped_debug_names &map, |
5196 | const mapped_debug_names &dwz_map) | |
5197 | { | |
168c9250 SM |
5198 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5199 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5200 | |
168c9250 | 5201 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5202 | false /* is_dwz */); |
927aa2e7 JK |
5203 | |
5204 | if (dwz_map.cu_count == 0) | |
5205 | return; | |
5206 | ||
168c9250 SM |
5207 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5208 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5209 | true /* is_dwz */); |
927aa2e7 JK |
5210 | } |
5211 | ||
5212 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5213 | elements of all the CUs and return true. Otherwise, return false. */ | |
5214 | ||
5215 | static bool | |
ed2dc618 | 5216 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5217 | { |
fcf23d5b SM |
5218 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5219 | mapped_debug_names dwz_map; | |
ed2dc618 | 5220 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
5221 | |
5222 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5989a64e | 5223 | &dwarf2_per_objfile->per_bfd->debug_names, |
22ca247e | 5224 | *map)) |
927aa2e7 JK |
5225 | return false; |
5226 | ||
5227 | /* Don't use the index if it's empty. */ | |
22ca247e | 5228 | if (map->name_count == 0) |
927aa2e7 JK |
5229 | return false; |
5230 | ||
5231 | /* If there is a .dwz file, read it so we can get its CU list as | |
5232 | well. */ | |
c3699833 | 5233 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
927aa2e7 JK |
5234 | if (dwz != NULL) |
5235 | { | |
5236 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5237 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5238 | &dwz->debug_names, dwz_map)) |
5239 | { | |
5240 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5241 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5242 | return false; |
5243 | } | |
5244 | } | |
5245 | ||
168c9250 | 5246 | create_cus_from_debug_names (dwarf2_per_objfile->per_bfd, *map, dwz_map); |
927aa2e7 | 5247 | |
22ca247e | 5248 | if (map->tu_count != 0) |
927aa2e7 JK |
5249 | { |
5250 | /* We can only handle a single .debug_types when we have an | |
5251 | index. */ | |
5989a64e | 5252 | if (dwarf2_per_objfile->per_bfd->types.size () != 1) |
927aa2e7 JK |
5253 | return false; |
5254 | ||
5989a64e | 5255 | dwarf2_section_info *section = &dwarf2_per_objfile->per_bfd->types[0]; |
927aa2e7 JK |
5256 | |
5257 | create_signatured_type_table_from_debug_names | |
5989a64e | 5258 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->per_bfd->abbrev); |
927aa2e7 JK |
5259 | } |
5260 | ||
ed2dc618 | 5261 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5989a64e | 5262 | &dwarf2_per_objfile->per_bfd->debug_aranges); |
927aa2e7 | 5263 | |
5989a64e SM |
5264 | dwarf2_per_objfile->per_bfd->debug_names_table = std::move (map); |
5265 | dwarf2_per_objfile->per_bfd->using_index = 1; | |
5266 | dwarf2_per_objfile->per_bfd->quick_file_names_table = | |
5267 | create_quick_file_names_table (dwarf2_per_objfile->per_bfd->all_comp_units.size ()); | |
927aa2e7 JK |
5268 | |
5269 | return true; | |
5270 | } | |
5271 | ||
927aa2e7 JK |
5272 | /* Type used to manage iterating over all CUs looking for a symbol for |
5273 | .debug_names. */ | |
5274 | ||
5275 | class dw2_debug_names_iterator | |
5276 | { | |
5277 | public: | |
927aa2e7 | 5278 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5279 | gdb::optional<block_enum> block_index, |
5280 | domain_enum domain, | |
fcf23d5b | 5281 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5282 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5283 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5284 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5285 | {} |
5286 | ||
5287 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
fcf23d5b | 5288 | search_domain search, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5289 | : m_map (map), |
5290 | m_search (search), | |
fcf23d5b SM |
5291 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5292 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5293 | {} |
5294 | ||
3b00ef10 TT |
5295 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5296 | block_enum block_index, domain_enum domain, | |
fcf23d5b | 5297 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5298 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5299 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5300 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5301 | {} |
5302 | ||
927aa2e7 JK |
5303 | /* Return the next matching CU or NULL if there are no more. */ |
5304 | dwarf2_per_cu_data *next (); | |
5305 | ||
5306 | private: | |
5307 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
fcf23d5b | 5308 | const char *name, dwarf2_per_objfile *per_objfile); |
927aa2e7 | 5309 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
fcf23d5b | 5310 | uint32_t namei, dwarf2_per_objfile *per_objfile); |
927aa2e7 JK |
5311 | |
5312 | /* The internalized form of .debug_names. */ | |
5313 | const mapped_debug_names &m_map; | |
5314 | ||
2b79f376 SM |
5315 | /* If set, only look for symbols that match that block. Valid values are |
5316 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5317 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5318 | |
5319 | /* The kind of symbol we're looking for. */ | |
5320 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5321 | const search_domain m_search = ALL_DOMAIN; | |
5322 | ||
5323 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5324 | not found. */ | |
5325 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5326 | |
5327 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5328 | }; |
5329 | ||
5330 | const char * | |
fcf23d5b SM |
5331 | mapped_debug_names::namei_to_name |
5332 | (uint32_t namei, dwarf2_per_objfile *dwarf2_per_objfile) const | |
927aa2e7 JK |
5333 | { |
5334 | const ULONGEST namei_string_offs | |
5335 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5336 | + namei * offset_size), | |
5337 | offset_size, | |
5338 | dwarf5_byte_order); | |
4f44ae6c TT |
5339 | return read_indirect_string_at_offset (dwarf2_per_objfile, |
5340 | namei_string_offs); | |
927aa2e7 JK |
5341 | } |
5342 | ||
5343 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5344 | found, return pointer to its pool data. If NAME cannot be found, | |
5345 | return NULL. */ | |
5346 | ||
5347 | const gdb_byte * | |
5348 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5349 | (const mapped_debug_names &map, const char *name, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5350 | { |
5351 | int (*cmp) (const char *, const char *); | |
5352 | ||
54ee4252 | 5353 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5354 | if (current_language->la_language == language_cplus |
5355 | || current_language->la_language == language_fortran | |
5356 | || current_language->la_language == language_d) | |
5357 | { | |
5358 | /* NAME is already canonical. Drop any qualifiers as | |
5359 | .debug_names does not contain any. */ | |
5360 | ||
5361 | if (strchr (name, '(') != NULL) | |
5362 | { | |
54ee4252 | 5363 | without_params = cp_remove_params (name); |
927aa2e7 | 5364 | if (without_params != NULL) |
54ee4252 | 5365 | name = without_params.get (); |
927aa2e7 JK |
5366 | } |
5367 | } | |
5368 | ||
5369 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5370 | ||
5371 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5372 | uint32_t namei | |
5373 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5374 | (map.bucket_table_reordered | |
5375 | + (full_hash % map.bucket_count)), 4, | |
5376 | map.dwarf5_byte_order); | |
5377 | if (namei == 0) | |
5378 | return NULL; | |
5379 | --namei; | |
5380 | if (namei >= map.name_count) | |
5381 | { | |
b98664d3 | 5382 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5383 | "[in module %s]"), |
5384 | namei, map.name_count, | |
fcf23d5b | 5385 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5386 | return NULL; |
5387 | } | |
5388 | ||
5389 | for (;;) | |
5390 | { | |
5391 | const uint32_t namei_full_hash | |
5392 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5393 | (map.hash_table_reordered + namei), 4, | |
5394 | map.dwarf5_byte_order); | |
5395 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5396 | return NULL; | |
5397 | ||
5398 | if (full_hash == namei_full_hash) | |
5399 | { | |
fcf23d5b | 5400 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5401 | |
5402 | #if 0 /* An expensive sanity check. */ | |
5403 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5404 | { | |
b98664d3 | 5405 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5406 | "[in module %s]"), |
5407 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5408 | return NULL; | |
5409 | } | |
5410 | #endif | |
5411 | ||
5412 | if (cmp (namei_string, name) == 0) | |
5413 | { | |
5414 | const ULONGEST namei_entry_offs | |
5415 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5416 | + namei * map.offset_size), | |
5417 | map.offset_size, map.dwarf5_byte_order); | |
5418 | return map.entry_pool + namei_entry_offs; | |
5419 | } | |
5420 | } | |
5421 | ||
5422 | ++namei; | |
5423 | if (namei >= map.name_count) | |
5424 | return NULL; | |
5425 | } | |
5426 | } | |
5427 | ||
5428 | const gdb_byte * | |
5429 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5430 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5431 | { |
5432 | if (namei >= map.name_count) | |
5433 | { | |
b98664d3 | 5434 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5435 | "[in module %s]"), |
5436 | namei, map.name_count, | |
fcf23d5b | 5437 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5438 | return NULL; |
5439 | } | |
5440 | ||
5441 | const ULONGEST namei_entry_offs | |
5442 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5443 | + namei * map.offset_size), | |
5444 | map.offset_size, map.dwarf5_byte_order); | |
5445 | return map.entry_pool + namei_entry_offs; | |
5446 | } | |
5447 | ||
5448 | /* See dw2_debug_names_iterator. */ | |
5449 | ||
5450 | dwarf2_per_cu_data * | |
5451 | dw2_debug_names_iterator::next () | |
5452 | { | |
5453 | if (m_addr == NULL) | |
5454 | return NULL; | |
5455 | ||
fcf23d5b SM |
5456 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5457 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5458 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5459 | |
5460 | again: | |
5461 | ||
5462 | unsigned int bytes_read; | |
5463 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5464 | m_addr += bytes_read; | |
5465 | if (abbrev == 0) | |
5466 | return NULL; | |
5467 | ||
5468 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5469 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5470 | { | |
b98664d3 | 5471 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5472 | "[in module %s]"), |
ed2dc618 | 5473 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5474 | return NULL; |
5475 | } | |
5476 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5477 | enum class symbol_linkage { |
5478 | unknown, | |
5479 | static_, | |
5480 | extern_, | |
23c13d42 | 5481 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5482 | dwarf2_per_cu_data *per_cu = NULL; |
5483 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5484 | { | |
5485 | ULONGEST ull; | |
5486 | switch (attr.form) | |
5487 | { | |
5488 | case DW_FORM_implicit_const: | |
5489 | ull = attr.implicit_const; | |
5490 | break; | |
5491 | case DW_FORM_flag_present: | |
5492 | ull = 1; | |
5493 | break; | |
5494 | case DW_FORM_udata: | |
5495 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5496 | m_addr += bytes_read; | |
5497 | break; | |
6dc55ce9 | 5498 | case DW_FORM_ref4: |
5499 | ull = read_4_bytes (abfd, m_addr); | |
5500 | m_addr += 4; | |
5501 | break; | |
5502 | case DW_FORM_ref8: | |
5503 | ull = read_8_bytes (abfd, m_addr); | |
5504 | m_addr += 8; | |
5505 | break; | |
5506 | case DW_FORM_ref_sig8: | |
5507 | ull = read_8_bytes (abfd, m_addr); | |
5508 | m_addr += 8; | |
5509 | break; | |
927aa2e7 | 5510 | default: |
b98664d3 | 5511 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5512 | dwarf_form_name (attr.form), |
ed2dc618 | 5513 | objfile_name (objfile)); |
927aa2e7 JK |
5514 | return NULL; |
5515 | } | |
5516 | switch (attr.dw_idx) | |
5517 | { | |
5518 | case DW_IDX_compile_unit: | |
5519 | /* Don't crash on bad data. */ | |
fcf23d5b | 5520 | if (ull >= m_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5521 | { |
b98664d3 | 5522 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5523 | " [in module %s]"), |
5524 | pulongest (ull), | |
fcf23d5b | 5525 | objfile_name (objfile)); |
927aa2e7 JK |
5526 | continue; |
5527 | } | |
fcf23d5b | 5528 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5529 | break; |
8af5c486 JK |
5530 | case DW_IDX_type_unit: |
5531 | /* Don't crash on bad data. */ | |
fcf23d5b | 5532 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5533 | { |
b98664d3 | 5534 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5535 | " [in module %s]"), |
5536 | pulongest (ull), | |
fcf23d5b | 5537 | objfile_name (objfile)); |
8af5c486 JK |
5538 | continue; |
5539 | } | |
fcf23d5b | 5540 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5541 | break; |
6dc55ce9 | 5542 | case DW_IDX_die_offset: |
5543 | /* In a per-CU index (as opposed to a per-module index), index | |
5544 | entries without CU attribute implicitly refer to the single CU. */ | |
5545 | if (per_cu == NULL) | |
fcf23d5b | 5546 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5547 | break; |
927aa2e7 JK |
5548 | case DW_IDX_GNU_internal: |
5549 | if (!m_map.augmentation_is_gdb) | |
5550 | break; | |
23c13d42 | 5551 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5552 | break; |
5553 | case DW_IDX_GNU_external: | |
5554 | if (!m_map.augmentation_is_gdb) | |
5555 | break; | |
23c13d42 | 5556 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5557 | break; |
5558 | } | |
5559 | } | |
5560 | ||
5561 | /* Skip if already read in. */ | |
fcf23d5b | 5562 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5563 | goto again; |
5564 | ||
5565 | /* Check static vs global. */ | |
23c13d42 | 5566 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5567 | { |
2b79f376 | 5568 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5569 | const bool symbol_is_static = |
5570 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5571 | if (want_static != symbol_is_static) |
2b79f376 | 5572 | goto again; |
927aa2e7 JK |
5573 | } |
5574 | ||
5575 | /* Match dw2_symtab_iter_next, symbol_kind | |
5576 | and debug_names::psymbol_tag. */ | |
5577 | switch (m_domain) | |
5578 | { | |
5579 | case VAR_DOMAIN: | |
5580 | switch (indexval.dwarf_tag) | |
5581 | { | |
5582 | case DW_TAG_variable: | |
5583 | case DW_TAG_subprogram: | |
5584 | /* Some types are also in VAR_DOMAIN. */ | |
5585 | case DW_TAG_typedef: | |
5586 | case DW_TAG_structure_type: | |
5587 | break; | |
5588 | default: | |
5589 | goto again; | |
5590 | } | |
5591 | break; | |
5592 | case STRUCT_DOMAIN: | |
5593 | switch (indexval.dwarf_tag) | |
5594 | { | |
5595 | case DW_TAG_typedef: | |
5596 | case DW_TAG_structure_type: | |
5597 | break; | |
5598 | default: | |
5599 | goto again; | |
5600 | } | |
5601 | break; | |
5602 | case LABEL_DOMAIN: | |
5603 | switch (indexval.dwarf_tag) | |
5604 | { | |
5605 | case 0: | |
5606 | case DW_TAG_variable: | |
5607 | break; | |
5608 | default: | |
5609 | goto again; | |
5610 | } | |
5611 | break; | |
59c35742 AB |
5612 | case MODULE_DOMAIN: |
5613 | switch (indexval.dwarf_tag) | |
5614 | { | |
5615 | case DW_TAG_module: | |
5616 | break; | |
5617 | default: | |
5618 | goto again; | |
5619 | } | |
5620 | break; | |
927aa2e7 JK |
5621 | default: |
5622 | break; | |
5623 | } | |
5624 | ||
5625 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5626 | debug_names::psymbol_tag. */ | |
5627 | switch (m_search) | |
4b514bc8 | 5628 | { |
927aa2e7 JK |
5629 | case VARIABLES_DOMAIN: |
5630 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5631 | { |
927aa2e7 JK |
5632 | case DW_TAG_variable: |
5633 | break; | |
5634 | default: | |
5635 | goto again; | |
4b514bc8 | 5636 | } |
927aa2e7 JK |
5637 | break; |
5638 | case FUNCTIONS_DOMAIN: | |
5639 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5640 | { |
927aa2e7 JK |
5641 | case DW_TAG_subprogram: |
5642 | break; | |
5643 | default: | |
5644 | goto again; | |
4b514bc8 | 5645 | } |
927aa2e7 JK |
5646 | break; |
5647 | case TYPES_DOMAIN: | |
5648 | switch (indexval.dwarf_tag) | |
5649 | { | |
5650 | case DW_TAG_typedef: | |
5651 | case DW_TAG_structure_type: | |
5652 | break; | |
5653 | default: | |
5654 | goto again; | |
5655 | } | |
5656 | break; | |
59c35742 AB |
5657 | case MODULES_DOMAIN: |
5658 | switch (indexval.dwarf_tag) | |
5659 | { | |
5660 | case DW_TAG_module: | |
5661 | break; | |
5662 | default: | |
5663 | goto again; | |
5664 | } | |
927aa2e7 JK |
5665 | default: |
5666 | break; | |
4b514bc8 | 5667 | } |
927aa2e7 JK |
5668 | |
5669 | return per_cu; | |
4b514bc8 | 5670 | } |
61920122 | 5671 | |
927aa2e7 | 5672 | static struct compunit_symtab * |
c7f839cb | 5673 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5674 | const char *name, domain_enum domain) |
4b514bc8 | 5675 | { |
ed2dc618 SM |
5676 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5677 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5678 | |
5989a64e | 5679 | const auto &mapp = dwarf2_per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5680 | if (!mapp) |
61920122 | 5681 | { |
927aa2e7 JK |
5682 | /* index is NULL if OBJF_READNOW. */ |
5683 | return NULL; | |
5684 | } | |
5685 | const auto &map = *mapp; | |
9291a0cd | 5686 | |
fcf23d5b SM |
5687 | dw2_debug_names_iterator iter (map, block_index, domain, name, |
5688 | dwarf2_per_objfile); | |
9703b513 | 5689 | |
927aa2e7 JK |
5690 | struct compunit_symtab *stab_best = NULL; |
5691 | struct dwarf2_per_cu_data *per_cu; | |
5692 | while ((per_cu = iter.next ()) != NULL) | |
5693 | { | |
5694 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a SM |
5695 | compunit_symtab *stab |
5696 | = dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); | |
927aa2e7 | 5697 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5698 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5699 | |
927aa2e7 JK |
5700 | sym = block_find_symbol (block, name, domain, |
5701 | block_find_non_opaque_type_preferred, | |
5702 | &with_opaque); | |
9703b513 | 5703 | |
927aa2e7 JK |
5704 | /* Some caution must be observed with overloaded functions and |
5705 | methods, since the index will not contain any overload | |
5706 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5707 | |
927aa2e7 | 5708 | if (sym != NULL |
987012b8 | 5709 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5710 | return stab; |
5711 | if (with_opaque != NULL | |
987012b8 | 5712 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5713 | stab_best = stab; |
9703b513 | 5714 | |
927aa2e7 | 5715 | /* Keep looking through other CUs. */ |
9703b513 TT |
5716 | } |
5717 | ||
927aa2e7 | 5718 | return stab_best; |
9703b513 TT |
5719 | } |
5720 | ||
927aa2e7 JK |
5721 | /* This dumps minimal information about .debug_names. It is called |
5722 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5723 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5724 | |
927aa2e7 JK |
5725 | static void |
5726 | dw2_debug_names_dump (struct objfile *objfile) | |
5727 | { | |
ed2dc618 SM |
5728 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5729 | = get_dwarf2_per_objfile (objfile); | |
5730 | ||
5989a64e | 5731 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
927aa2e7 | 5732 | printf_filtered (".debug_names:"); |
5989a64e | 5733 | if (dwarf2_per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5734 | printf_filtered (" exists\n"); |
5735 | else | |
5736 | printf_filtered (" faked for \"readnow\"\n"); | |
5737 | printf_filtered ("\n"); | |
9291a0cd TT |
5738 | } |
5739 | ||
9291a0cd | 5740 | static void |
927aa2e7 JK |
5741 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5742 | const char *func_name) | |
9291a0cd | 5743 | { |
ed2dc618 SM |
5744 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5745 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 5746 | |
5989a64e SM |
5747 | /* dwarf2_per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5748 | if (dwarf2_per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5749 | { |
5989a64e | 5750 | const mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
24c79950 | 5751 | |
fcf23d5b SM |
5752 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name, |
5753 | dwarf2_per_objfile); | |
24c79950 | 5754 | |
927aa2e7 JK |
5755 | struct dwarf2_per_cu_data *per_cu; |
5756 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a | 5757 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
927aa2e7 JK |
5758 | } |
5759 | } | |
24c79950 | 5760 | |
3b00ef10 TT |
5761 | static void |
5762 | dw2_debug_names_map_matching_symbols | |
5763 | (struct objfile *objfile, | |
5764 | const lookup_name_info &name, domain_enum domain, | |
5765 | int global, | |
5766 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5767 | symbol_compare_ftype *ordered_compare) | |
5768 | { | |
5769 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
5770 | = get_dwarf2_per_objfile (objfile); | |
5771 | ||
5772 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
5989a64e | 5773 | if (!dwarf2_per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5774 | return; |
5775 | ||
5989a64e | 5776 | mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5777 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5778 | ||
5779 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5780 | auto matcher = [&] (const char *symname) | |
5781 | { | |
5782 | if (ordered_compare == nullptr) | |
5783 | return true; | |
5784 | return ordered_compare (symname, match_name) == 0; | |
5785 | }; | |
5786 | ||
5787 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5788 | [&] (offset_type namei) | |
5789 | { | |
5790 | /* The name was matched, now expand corresponding CUs that were | |
5791 | marked. */ | |
fcf23d5b SM |
5792 | dw2_debug_names_iterator iter (map, block_kind, domain, namei, |
5793 | dwarf2_per_objfile); | |
3b00ef10 TT |
5794 | |
5795 | struct dwarf2_per_cu_data *per_cu; | |
5796 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a SM |
5797 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, nullptr, |
5798 | nullptr); | |
3b00ef10 | 5799 | return true; |
fcf23d5b | 5800 | }, dwarf2_per_objfile); |
3b00ef10 TT |
5801 | |
5802 | /* It's a shame we couldn't do this inside the | |
5803 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5804 | that have already been expanded. Instead, this loop matches what | |
5805 | the psymtab code does. */ | |
5989a64e | 5806 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5807 | { |
af758d11 SM |
5808 | compunit_symtab *symtab = dwarf2_per_objfile->get_symtab (per_cu); |
5809 | if (symtab != nullptr) | |
3b00ef10 TT |
5810 | { |
5811 | const struct block *block | |
af758d11 | 5812 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5813 | if (!iterate_over_symbols_terminated (block, name, |
5814 | domain, callback)) | |
5815 | break; | |
5816 | } | |
5817 | } | |
5818 | } | |
5819 | ||
927aa2e7 JK |
5820 | static void |
5821 | dw2_debug_names_expand_symtabs_matching | |
5822 | (struct objfile *objfile, | |
5823 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5824 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5825 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5826 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5827 | enum search_domain kind) | |
5828 | { | |
ed2dc618 SM |
5829 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5830 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 5831 | |
927aa2e7 | 5832 | /* debug_names_table is NULL if OBJF_READNOW. */ |
5989a64e | 5833 | if (!dwarf2_per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5834 | return; |
9291a0cd | 5835 | |
ed2dc618 | 5836 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 5837 | |
c1a66c06 TV |
5838 | if (symbol_matcher == NULL && lookup_name == NULL) |
5839 | { | |
5989a64e | 5840 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5841 | { |
5842 | QUIT; | |
5843 | ||
97a1449a SM |
5844 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
5845 | file_matcher, expansion_notify); | |
c1a66c06 TV |
5846 | } |
5847 | return; | |
5848 | } | |
5849 | ||
5989a64e | 5850 | mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5851 | |
c1a66c06 | 5852 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
5853 | symbol_matcher, |
5854 | kind, [&] (offset_type namei) | |
927aa2e7 | 5855 | { |
927aa2e7 JK |
5856 | /* The name was matched, now expand corresponding CUs that were |
5857 | marked. */ | |
fcf23d5b | 5858 | dw2_debug_names_iterator iter (map, kind, namei, dwarf2_per_objfile); |
bbf2f4df | 5859 | |
927aa2e7 JK |
5860 | struct dwarf2_per_cu_data *per_cu; |
5861 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a SM |
5862 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
5863 | file_matcher, expansion_notify); | |
3b00ef10 | 5864 | return true; |
fcf23d5b | 5865 | }, dwarf2_per_objfile); |
9291a0cd TT |
5866 | } |
5867 | ||
927aa2e7 | 5868 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5869 | { |
5870 | dw2_has_symbols, | |
5871 | dw2_find_last_source_symtab, | |
5872 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5873 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5874 | dw2_debug_names_lookup_symbol, |
d3214198 | 5875 | NULL, |
9291a0cd | 5876 | dw2_print_stats, |
927aa2e7 | 5877 | dw2_debug_names_dump, |
927aa2e7 | 5878 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5879 | dw2_expand_all_symtabs, |
652a8996 | 5880 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5881 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5882 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5883 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5884 | NULL, |
9291a0cd TT |
5885 | dw2_map_symbol_filenames |
5886 | }; | |
5887 | ||
4485a1c1 | 5888 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5889 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5890 | |
5891 | template <typename T> | |
5892 | static gdb::array_view<const gdb_byte> | |
5893 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5894 | { | |
5895 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5896 | ||
96b79293 | 5897 | if (section->empty ()) |
4485a1c1 SM |
5898 | return {}; |
5899 | ||
5900 | /* Older elfutils strip versions could keep the section in the main | |
5901 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5902 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5903 | return {}; |
5904 | ||
96b79293 | 5905 | section->read (obj); |
4485a1c1 | 5906 | |
8bebfcda PA |
5907 | /* dwarf2_section_info::size is a bfd_size_type, while |
5908 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5909 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5910 | is 32-bit. So we need an explicit narrowing conversion here. | |
5911 | This is fine, because it's impossible to allocate or mmap an | |
5912 | array/buffer larger than what size_t can represent. */ | |
5913 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5914 | } |
5915 | ||
87d6a7aa SM |
5916 | /* Lookup the index cache for the contents of the index associated to |
5917 | DWARF2_OBJ. */ | |
5918 | ||
5919 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5920 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5921 | { |
5922 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5923 | if (build_id == nullptr) | |
5924 | return {}; | |
5925 | ||
5926 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5927 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5928 | } |
5929 | ||
5930 | /* Same as the above, but for DWZ. */ | |
5931 | ||
5932 | static gdb::array_view<const gdb_byte> | |
5933 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5934 | { | |
5935 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5936 | if (build_id == nullptr) | |
5937 | return {}; | |
5938 | ||
5939 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5940 | } | |
5941 | ||
3c0aa29a | 5942 | /* See symfile.h. */ |
9291a0cd | 5943 | |
3c0aa29a PA |
5944 | bool |
5945 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5946 | { |
ed2dc618 SM |
5947 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5948 | = get_dwarf2_per_objfile (objfile); | |
17ee85fc | 5949 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
ed2dc618 | 5950 | |
9291a0cd TT |
5951 | /* If we're about to read full symbols, don't bother with the |
5952 | indices. In this case we also don't care if some other debug | |
5953 | format is making psymtabs, because they are all about to be | |
5954 | expanded anyway. */ | |
5955 | if ((objfile->flags & OBJF_READNOW)) | |
5956 | { | |
17ee85fc TT |
5957 | /* When using READNOW, the using_index flag (set below) indicates that |
5958 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
5959 | if (per_bfd->using_index) | |
5960 | { | |
5961 | *index_kind = dw_index_kind::GDB_INDEX; | |
5962 | dwarf2_per_objfile->resize_symtabs (); | |
5963 | return true; | |
5964 | } | |
5965 | ||
5966 | per_bfd->using_index = 1; | |
ed2dc618 SM |
5967 | create_all_comp_units (dwarf2_per_objfile); |
5968 | create_all_type_units (dwarf2_per_objfile); | |
17ee85fc TT |
5969 | per_bfd->quick_file_names_table |
5970 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
af758d11 | 5971 | dwarf2_per_objfile->resize_symtabs (); |
9291a0cd | 5972 | |
17ee85fc TT |
5973 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
5974 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 5975 | { |
17ee85fc | 5976 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 5977 | |
17ee85fc | 5978 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 5979 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
5980 | } |
5981 | ||
5982 | /* Return 1 so that gdb sees the "quick" functions. However, | |
5983 | these functions will be no-ops because we will have expanded | |
5984 | all symtabs. */ | |
3c0aa29a PA |
5985 | *index_kind = dw_index_kind::GDB_INDEX; |
5986 | return true; | |
9291a0cd TT |
5987 | } |
5988 | ||
17ee85fc TT |
5989 | /* Was a debug names index already read when we processed an objfile sharing |
5990 | PER_BFD? */ | |
5991 | if (per_bfd->debug_names_table != nullptr) | |
5992 | { | |
5993 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
5994 | dwarf2_per_objfile->resize_symtabs (); | |
5995 | return true; | |
5996 | } | |
5997 | ||
5998 | /* Was a GDB index already read when we processed an objfile sharing | |
5999 | PER_BFD? */ | |
6000 | if (per_bfd->index_table != nullptr) | |
6001 | { | |
6002 | *index_kind = dw_index_kind::GDB_INDEX; | |
6003 | dwarf2_per_objfile->resize_symtabs (); | |
6004 | return true; | |
6005 | } | |
6006 | ||
ed2dc618 | 6007 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6008 | { |
6009 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
af758d11 | 6010 | dwarf2_per_objfile->resize_symtabs (); |
3c0aa29a PA |
6011 | return true; |
6012 | } | |
927aa2e7 | 6013 | |
4485a1c1 | 6014 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
5989a64e | 6015 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 6016 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
6017 | { |
6018 | *index_kind = dw_index_kind::GDB_INDEX; | |
af758d11 | 6019 | dwarf2_per_objfile->resize_symtabs (); |
3c0aa29a PA |
6020 | return true; |
6021 | } | |
9291a0cd | 6022 | |
87d6a7aa SM |
6023 | /* ... otherwise, try to find the index in the index cache. */ |
6024 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
6025 | get_gdb_index_contents_from_cache, | |
6026 | get_gdb_index_contents_from_cache_dwz)) | |
6027 | { | |
6028 | global_index_cache.hit (); | |
6029 | *index_kind = dw_index_kind::GDB_INDEX; | |
af758d11 | 6030 | dwarf2_per_objfile->resize_symtabs (); |
87d6a7aa SM |
6031 | return true; |
6032 | } | |
6033 | ||
6034 | global_index_cache.miss (); | |
3c0aa29a | 6035 | return false; |
9291a0cd TT |
6036 | } |
6037 | ||
6038 | \f | |
6039 | ||
dce234bc PP |
6040 | /* Build a partial symbol table. */ |
6041 | ||
6042 | void | |
f29dff0a | 6043 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6044 | { |
ed2dc618 SM |
6045 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6046 | = get_dwarf2_per_objfile (objfile); | |
17ee85fc TT |
6047 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
6048 | ||
6049 | if (per_bfd->partial_symtabs != nullptr) | |
6050 | { | |
6051 | /* Partial symbols were already read, so now we can simply | |
6052 | attach them. */ | |
6053 | objfile->partial_symtabs = per_bfd->partial_symtabs; | |
6054 | dwarf2_per_objfile->resize_symtabs (); | |
6055 | return; | |
6056 | } | |
c9bf0622 | 6057 | |
6eee24ce | 6058 | init_psymbol_list (objfile, 1024); |
c906108c | 6059 | |
a70b8144 | 6060 | try |
c9bf0622 TT |
6061 | { |
6062 | /* This isn't really ideal: all the data we allocate on the | |
6063 | objfile's obstack is still uselessly kept around. However, | |
6064 | freeing it seems unsafe. */ | |
906768f9 | 6065 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6066 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6067 | psymtabs.keep (); |
87d6a7aa | 6068 | |
af758d11 SM |
6069 | dwarf2_per_objfile->resize_symtabs (); |
6070 | ||
87d6a7aa SM |
6071 | /* (maybe) store an index in the cache. */ |
6072 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 6073 | } |
230d2906 | 6074 | catch (const gdb_exception_error &except) |
492d29ea PA |
6075 | { |
6076 | exception_print (gdb_stderr, except); | |
6077 | } | |
17ee85fc TT |
6078 | |
6079 | /* Finish by setting the local reference to partial symtabs, so that | |
6080 | we don't try to read them again if reading another objfile with the same | |
6081 | BFD. If we can't in fact share, this won't make a difference anyway as | |
6082 | the dwarf2_per_bfd object won't be shared. */ | |
6083 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
c906108c | 6084 | } |
c906108c | 6085 | |
3b80fe9b DE |
6086 | /* Find the base address of the compilation unit for range lists and |
6087 | location lists. It will normally be specified by DW_AT_low_pc. | |
6088 | In DWARF-3 draft 4, the base address could be overridden by | |
6089 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6090 | compilation units with discontinuous ranges. */ | |
6091 | ||
6092 | static void | |
6093 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6094 | { | |
6095 | struct attribute *attr; | |
6096 | ||
2b24b6e4 | 6097 | cu->base_address.reset (); |
3b80fe9b DE |
6098 | |
6099 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6100 | if (attr != nullptr) |
2b24b6e4 | 6101 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6102 | else |
6103 | { | |
6104 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6105 | if (attr != nullptr) |
2b24b6e4 | 6106 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6107 | } |
6108 | } | |
6109 | ||
36586728 TT |
6110 | /* Helper function that returns the proper abbrev section for |
6111 | THIS_CU. */ | |
6112 | ||
6113 | static struct dwarf2_section_info * | |
6114 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6115 | { | |
6116 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6117 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6118 | |
6119 | if (this_cu->is_dwz) | |
c3699833 | 6120 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6121 | else |
c3699833 | 6122 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6123 | |
6124 | return abbrev; | |
6125 | } | |
6126 | ||
f4dc4d17 DE |
6127 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6128 | ||
6129 | static sect_offset | |
ed2dc618 SM |
6130 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6131 | struct dwarf2_section_info *section, | |
9c541725 | 6132 | sect_offset sect_off) |
f4dc4d17 | 6133 | { |
96b79293 | 6134 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6135 | const gdb_byte *info_ptr; |
ac298888 | 6136 | unsigned int initial_length_size, offset_size; |
43988095 | 6137 | uint16_t version; |
f4dc4d17 | 6138 | |
96b79293 | 6139 | section->read (dwarf2_per_objfile->objfile); |
9c541725 | 6140 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6141 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6142 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6143 | info_ptr += initial_length_size; |
6144 | ||
6145 | version = read_2_bytes (abfd, info_ptr); | |
6146 | info_ptr += 2; | |
6147 | if (version >= 5) | |
6148 | { | |
6149 | /* Skip unit type and address size. */ | |
6150 | info_ptr += 2; | |
6151 | } | |
6152 | ||
24aa364d | 6153 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6154 | } |
6155 | ||
b83470bf TT |
6156 | /* A partial symtab that is used only for include files. */ |
6157 | struct dwarf2_include_psymtab : public partial_symtab | |
6158 | { | |
6159 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6160 | : partial_symtab (filename, objfile) | |
6161 | { | |
6162 | } | |
6163 | ||
6164 | void read_symtab (struct objfile *objfile) override | |
6165 | { | |
194d088f TV |
6166 | /* It's an include file, no symbols to read for it. |
6167 | Everything is in the includer symtab. */ | |
6168 | ||
6169 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6170 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6171 | model the includer. But if we go the regular route of calling | |
6172 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6173 | to expand the includer, we'll only use expand_psymtab on the includer | |
6174 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6175 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6176 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6177 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6178 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6179 | } |
6180 | ||
6181 | void expand_psymtab (struct objfile *objfile) override | |
6182 | { | |
194d088f TV |
6183 | /* This is not called by read_symtab, and should not be called by any |
6184 | expand_dependencies. */ | |
6185 | gdb_assert (false); | |
b83470bf TT |
6186 | } |
6187 | ||
5717c425 | 6188 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6189 | { |
5717c425 | 6190 | return includer ()->readin_p (objfile); |
b83470bf TT |
6191 | } |
6192 | ||
5717c425 | 6193 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6194 | { |
6195 | return nullptr; | |
6196 | } | |
6197 | ||
6198 | private: | |
194d088f TV |
6199 | partial_symtab *includer () const |
6200 | { | |
6201 | /* An include psymtab has exactly one dependency: the psymtab that | |
6202 | includes it. */ | |
6203 | gdb_assert (this->number_of_dependencies == 1); | |
6204 | return this->dependencies[0]; | |
6205 | } | |
b83470bf TT |
6206 | }; |
6207 | ||
aaa75496 JB |
6208 | /* Allocate a new partial symtab for file named NAME and mark this new |
6209 | partial symtab as being an include of PST. */ | |
6210 | ||
6211 | static void | |
891813be | 6212 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6213 | struct objfile *objfile) |
6214 | { | |
b83470bf | 6215 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6216 | |
fbd9ab74 | 6217 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6218 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6219 | |
a9342b62 | 6220 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6221 | subpst->dependencies[0] = pst; |
6222 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6223 | } |
6224 | ||
6225 | /* Read the Line Number Program data and extract the list of files | |
6226 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6227 | partial symtab for each of these included files. */ |
aaa75496 JB |
6228 | |
6229 | static void | |
6230 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6231 | struct die_info *die, |
891813be | 6232 | dwarf2_psymtab *pst) |
aaa75496 | 6233 | { |
fff8551c | 6234 | line_header_up lh; |
d85a05f0 | 6235 | struct attribute *attr; |
aaa75496 | 6236 | |
d85a05f0 | 6237 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6238 | if (attr != nullptr) |
9c541725 | 6239 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6240 | if (lh == NULL) |
6241 | return; /* No linetable, so no includes. */ | |
6242 | ||
79748972 TT |
6243 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6244 | that we pass in the raw text_low here; that is ok because we're | |
6245 | only decoding the line table to make include partial symtabs, and | |
6246 | so the addresses aren't really used. */ | |
4ae976d1 | 6247 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6248 | pst->raw_text_low (), 1); |
aaa75496 JB |
6249 | } |
6250 | ||
348e048f | 6251 | static hashval_t |
52dc124a | 6252 | hash_signatured_type (const void *item) |
348e048f | 6253 | { |
9a3c8263 SM |
6254 | const struct signatured_type *sig_type |
6255 | = (const struct signatured_type *) item; | |
9a619af0 | 6256 | |
348e048f | 6257 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6258 | return sig_type->signature; |
348e048f DE |
6259 | } |
6260 | ||
6261 | static int | |
52dc124a | 6262 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6263 | { |
9a3c8263 SM |
6264 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6265 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6266 | |
348e048f DE |
6267 | return lhs->signature == rhs->signature; |
6268 | } | |
6269 | ||
1fd400ff TT |
6270 | /* Allocate a hash table for signatured types. */ |
6271 | ||
b0b6a987 | 6272 | static htab_up |
298e9637 | 6273 | allocate_signatured_type_table () |
1fd400ff | 6274 | { |
b0b6a987 TT |
6275 | return htab_up (htab_create_alloc (41, |
6276 | hash_signatured_type, | |
6277 | eq_signatured_type, | |
6278 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6279 | } |
6280 | ||
d467dd73 | 6281 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6282 | |
6283 | static int | |
d467dd73 | 6284 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6285 | { |
9a3c8263 | 6286 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6287 | std::vector<signatured_type *> *all_type_units |
6288 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6289 | |
b2bdb8cf | 6290 | all_type_units->push_back (sigt); |
1fd400ff TT |
6291 | |
6292 | return 1; | |
6293 | } | |
6294 | ||
78d4d2c5 | 6295 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6296 | and fill them into TYPES_HTAB. It will process only type units, |
6297 | therefore DW_UT_type. */ | |
c88ee1f0 | 6298 | |
78d4d2c5 | 6299 | static void |
ed2dc618 SM |
6300 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6301 | struct dwo_file *dwo_file, | |
b0b6a987 | 6302 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6303 | rcuh_kind section_kind) |
348e048f | 6304 | { |
3019eac3 | 6305 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6306 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6307 | bfd *abfd; |
6308 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6309 | |
4bdcc0c1 DE |
6310 | abbrev_section = (dwo_file != NULL |
6311 | ? &dwo_file->sections.abbrev | |
5989a64e | 6312 | : &dwarf2_per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6313 | |
b4f54984 | 6314 | if (dwarf_read_debug) |
43988095 | 6315 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6316 | section->get_name (), |
6317 | abbrev_section->get_file_name ()); | |
09406207 | 6318 | |
96b79293 | 6319 | section->read (objfile); |
78d4d2c5 | 6320 | info_ptr = section->buffer; |
348e048f | 6321 | |
78d4d2c5 JK |
6322 | if (info_ptr == NULL) |
6323 | return; | |
348e048f | 6324 | |
78d4d2c5 JK |
6325 | /* We can't set abfd until now because the section may be empty or |
6326 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6327 | abfd = section->get_bfd_owner (); |
348e048f | 6328 | |
c0ab21c2 TT |
6329 | /* We don't use cutu_reader here because we don't need to read |
6330 | any dies: the signature is in the header. */ | |
3019eac3 | 6331 | |
78d4d2c5 JK |
6332 | end_ptr = info_ptr + section->size; |
6333 | while (info_ptr < end_ptr) | |
6334 | { | |
78d4d2c5 JK |
6335 | struct signatured_type *sig_type; |
6336 | struct dwo_unit *dwo_tu; | |
6337 | void **slot; | |
6338 | const gdb_byte *ptr = info_ptr; | |
6339 | struct comp_unit_head header; | |
6340 | unsigned int length; | |
8b70b953 | 6341 | |
9c541725 | 6342 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6343 | |
a49dd8dd JK |
6344 | /* Initialize it due to a false compiler warning. */ |
6345 | header.signature = -1; | |
9c541725 | 6346 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6347 | |
78d4d2c5 JK |
6348 | /* We need to read the type's signature in order to build the hash |
6349 | table, but we don't need anything else just yet. */ | |
348e048f | 6350 | |
ed2dc618 | 6351 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6352 | abbrev_section, ptr, section_kind); |
348e048f | 6353 | |
4057dfde | 6354 | length = header.get_length (); |
6caca83c | 6355 | |
78d4d2c5 JK |
6356 | /* Skip dummy type units. */ |
6357 | if (ptr >= info_ptr + length | |
43988095 JK |
6358 | || peek_abbrev_code (abfd, ptr) == 0 |
6359 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6360 | { |
6361 | info_ptr += length; | |
6362 | continue; | |
6363 | } | |
dee91e82 | 6364 | |
78d4d2c5 JK |
6365 | if (types_htab == NULL) |
6366 | { | |
6367 | if (dwo_file) | |
298e9637 | 6368 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6369 | else |
298e9637 | 6370 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6371 | } |
8b70b953 | 6372 | |
78d4d2c5 JK |
6373 | if (dwo_file) |
6374 | { | |
6375 | sig_type = NULL; | |
5989a64e | 6376 | dwo_tu = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
78d4d2c5 JK |
6377 | struct dwo_unit); |
6378 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6379 | dwo_tu->signature = header.signature; |
9c541725 | 6380 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6381 | dwo_tu->section = section; |
9c541725 | 6382 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6383 | dwo_tu->length = length; |
6384 | } | |
6385 | else | |
6386 | { | |
6387 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6388 | The real type_offset is in the DWO file. */ | |
6389 | dwo_tu = NULL; | |
5989a64e | 6390 | sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6391 | sig_type->signature = header.signature; |
9c541725 | 6392 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6393 | sig_type->per_cu.is_debug_types = 1; |
6394 | sig_type->per_cu.section = section; | |
9c541725 | 6395 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6396 | sig_type->per_cu.length = length; |
6397 | } | |
6398 | ||
b0b6a987 | 6399 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6400 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6401 | INSERT); | |
6402 | gdb_assert (slot != NULL); | |
6403 | if (*slot != NULL) | |
6404 | { | |
9c541725 | 6405 | sect_offset dup_sect_off; |
0349ea22 | 6406 | |
3019eac3 DE |
6407 | if (dwo_file) |
6408 | { | |
78d4d2c5 JK |
6409 | const struct dwo_unit *dup_tu |
6410 | = (const struct dwo_unit *) *slot; | |
6411 | ||
9c541725 | 6412 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6413 | } |
6414 | else | |
6415 | { | |
78d4d2c5 JK |
6416 | const struct signatured_type *dup_tu |
6417 | = (const struct signatured_type *) *slot; | |
6418 | ||
9c541725 | 6419 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6420 | } |
8b70b953 | 6421 | |
b98664d3 | 6422 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6423 | " the entry at offset %s, signature %s"), |
6424 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6425 | hex_string (header.signature)); |
78d4d2c5 JK |
6426 | } |
6427 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6428 | |
78d4d2c5 | 6429 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6430 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6431 | sect_offset_str (sect_off), | |
43988095 | 6432 | hex_string (header.signature)); |
3019eac3 | 6433 | |
78d4d2c5 JK |
6434 | info_ptr += length; |
6435 | } | |
6436 | } | |
3019eac3 | 6437 | |
78d4d2c5 JK |
6438 | /* Create the hash table of all entries in the .debug_types |
6439 | (or .debug_types.dwo) section(s). | |
6440 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6441 | otherwise it is NULL. | |
b3c8eb43 | 6442 | |
78d4d2c5 | 6443 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6444 | |
78d4d2c5 | 6445 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6446 | |
78d4d2c5 | 6447 | static void |
ed2dc618 SM |
6448 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6449 | struct dwo_file *dwo_file, | |
fd5866f6 | 6450 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6451 | htab_up &types_htab) |
78d4d2c5 | 6452 | { |
fd5866f6 SM |
6453 | for (dwarf2_section_info §ion : type_sections) |
6454 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6455 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6456 | } |
6457 | ||
6458 | /* Create the hash table of all entries in the .debug_types section, | |
6459 | and initialize all_type_units. | |
6460 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6461 | otherwise non-zero. */ | |
6462 | ||
6463 | static int | |
ed2dc618 | 6464 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6465 | { |
b0b6a987 | 6466 | htab_up types_htab; |
3019eac3 | 6467 | |
ed2dc618 | 6468 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
5989a64e | 6469 | &dwarf2_per_objfile->per_bfd->info, types_htab, |
43988095 | 6470 | rcuh_kind::COMPILE); |
ed2dc618 | 6471 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
5989a64e | 6472 | dwarf2_per_objfile->per_bfd->types, types_htab); |
3019eac3 DE |
6473 | if (types_htab == NULL) |
6474 | { | |
5989a64e | 6475 | dwarf2_per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6476 | return 0; |
6477 | } | |
6478 | ||
5989a64e | 6479 | dwarf2_per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6480 | |
5989a64e SM |
6481 | gdb_assert (dwarf2_per_objfile->per_bfd->all_type_units.empty ()); |
6482 | dwarf2_per_objfile->per_bfd->all_type_units.reserve | |
6483 | (htab_elements (dwarf2_per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6484 | |
5989a64e | 6485 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6486 | add_signatured_type_cu_to_table, |
5989a64e | 6487 | &dwarf2_per_objfile->per_bfd->all_type_units); |
1fd400ff | 6488 | |
348e048f DE |
6489 | return 1; |
6490 | } | |
6491 | ||
5989a64e | 6492 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6493 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6494 | Otherwise we find one. */ | |
6495 | ||
6496 | static struct signatured_type * | |
ed2dc618 SM |
6497 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6498 | void **slot) | |
6aa5f3a6 | 6499 | { |
5989a64e SM |
6500 | if (dwarf2_per_objfile->per_bfd->all_type_units.size () |
6501 | == dwarf2_per_objfile->per_bfd->all_type_units.capacity ()) | |
6502 | ++dwarf2_per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6503 | |
5989a64e | 6504 | signatured_type *sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6505 | |
af758d11 SM |
6506 | dwarf2_per_objfile->resize_symtabs (); |
6507 | ||
5989a64e | 6508 | dwarf2_per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6509 | sig_type->signature = sig; |
6510 | sig_type->per_cu.is_debug_types = 1; | |
5989a64e | 6511 | if (dwarf2_per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6512 | { |
6513 | sig_type->per_cu.v.quick = | |
5989a64e | 6514 | OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6515 | struct dwarf2_per_cu_quick_data); |
6516 | } | |
6517 | ||
6518 | if (slot == NULL) | |
6519 | { | |
5989a64e | 6520 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6521 | sig_type, INSERT); |
6522 | } | |
6523 | gdb_assert (*slot == NULL); | |
6524 | *slot = sig_type; | |
6525 | /* The rest of sig_type must be filled in by the caller. */ | |
6526 | return sig_type; | |
6527 | } | |
6528 | ||
a2ce51a0 DE |
6529 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6530 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6531 | ||
6532 | static void | |
ed2dc618 | 6533 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6534 | struct signatured_type *sig_entry, |
6535 | struct dwo_unit *dwo_entry) | |
6536 | { | |
1859c670 SM |
6537 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
6538 | ||
7ee85ab1 | 6539 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6540 | gdb_assert (! sig_entry->per_cu.queued); |
7188ed02 | 6541 | gdb_assert (dwarf2_per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6542 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6543 | { |
6544 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
af758d11 | 6545 | gdb_assert (!dwarf2_per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6546 | } |
6547 | else | |
6548 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6549 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6550 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6551 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6552 | gdb_assert (sig_entry->dwo_unit == NULL); |
6553 | ||
6554 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6555 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6556 | sig_entry->per_cu.length = dwo_entry->length; |
6557 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6558 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6559 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6560 | sig_entry->dwo_unit = dwo_entry; | |
6561 | } | |
6562 | ||
6563 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6564 | If we haven't read the TU yet, create the signatured_type data structure |
6565 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6566 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6567 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6568 | containing that CU. Otherwise we could end up reading several other DWO | |
6569 | files (due to comdat folding) to process the transitive closure of all the | |
6570 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6571 | type signature that it needs. | |
a2ce51a0 DE |
6572 | We only do this for .gdb_index because in the psymtab case we already have |
6573 | to read all the DWOs to build the type unit groups. */ | |
6574 | ||
6575 | static struct signatured_type * | |
6576 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6577 | { | |
5e22e966 | 6578 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6579 | struct dwo_file *dwo_file; |
6580 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6581 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6582 | void **slot; |
a2ce51a0 | 6583 | |
5989a64e | 6584 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->per_bfd->using_index); |
a2ce51a0 | 6585 | |
6aa5f3a6 DE |
6586 | /* If TU skeletons have been removed then we may not have read in any |
6587 | TUs yet. */ | |
5989a64e SM |
6588 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
6589 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6590 | |
6591 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6592 | Use the global signatured_types array to do our own comdat-folding |
6593 | of types. If this is the first time we're reading this TU, and | |
6594 | the TU has an entry in .gdb_index, replace the recorded data from | |
6595 | .gdb_index with this TU. */ | |
a2ce51a0 | 6596 | |
a2ce51a0 | 6597 | find_sig_entry.signature = sig; |
5989a64e | 6598 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6599 | &find_sig_entry, INSERT); |
9a3c8263 | 6600 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6601 | |
6602 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6603 | read. Don't reassign the global entry to point to this DWO if that's |
6604 | the case. Also note that if the TU is already being read, it may not | |
6605 | have come from a DWO, the program may be a mix of Fission-compiled | |
6606 | code and non-Fission-compiled code. */ | |
6607 | ||
6608 | /* Have we already tried to read this TU? | |
6609 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6610 | needn't exist in the global table yet). */ | |
6611 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6612 | return sig_entry; |
6613 | ||
6aa5f3a6 DE |
6614 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6615 | dwo_unit of the TU itself. */ | |
6616 | dwo_file = cu->dwo_unit->dwo_file; | |
6617 | ||
a2ce51a0 DE |
6618 | /* Ok, this is the first time we're reading this TU. */ |
6619 | if (dwo_file->tus == NULL) | |
6620 | return NULL; | |
6621 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6622 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6623 | &find_dwo_entry); | |
a2ce51a0 DE |
6624 | if (dwo_entry == NULL) |
6625 | return NULL; | |
6626 | ||
6aa5f3a6 DE |
6627 | /* If the global table doesn't have an entry for this TU, add one. */ |
6628 | if (sig_entry == NULL) | |
ed2dc618 | 6629 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6630 | |
ed2dc618 | 6631 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6632 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6633 | return sig_entry; |
6634 | } | |
6635 | ||
a2ce51a0 DE |
6636 | /* Subroutine of lookup_signatured_type. |
6637 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6638 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6639 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6640 | |
6641 | static struct signatured_type * | |
6642 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6643 | { | |
5e22e966 | 6644 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 6645 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6646 | struct dwo_unit *dwo_entry; |
6647 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6648 | void **slot; |
a2ce51a0 | 6649 | |
5989a64e | 6650 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6651 | gdb_assert (dwp_file != NULL); |
6652 | ||
6aa5f3a6 DE |
6653 | /* If TU skeletons have been removed then we may not have read in any |
6654 | TUs yet. */ | |
5989a64e SM |
6655 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
6656 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6657 | |
6aa5f3a6 | 6658 | find_sig_entry.signature = sig; |
5989a64e | 6659 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6660 | &find_sig_entry, INSERT); |
9a3c8263 | 6661 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6662 | |
6663 | /* Have we already tried to read this TU? | |
6664 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6665 | needn't exist in the global table yet). */ | |
6666 | if (sig_entry != NULL) | |
6667 | return sig_entry; | |
6668 | ||
a2ce51a0 DE |
6669 | if (dwp_file->tus == NULL) |
6670 | return NULL; | |
ed2dc618 | 6671 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6672 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6673 | if (dwo_entry == NULL) |
6674 | return NULL; | |
6675 | ||
ed2dc618 SM |
6676 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6677 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6678 | |
a2ce51a0 DE |
6679 | return sig_entry; |
6680 | } | |
6681 | ||
380bca97 | 6682 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6683 | Returns NULL if signature SIG is not present in the table. |
6684 | It is up to the caller to complain about this. */ | |
348e048f DE |
6685 | |
6686 | static struct signatured_type * | |
a2ce51a0 | 6687 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6688 | { |
5e22e966 | 6689 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 6690 | |
a2ce51a0 | 6691 | if (cu->dwo_unit |
5989a64e | 6692 | && dwarf2_per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6693 | { |
6694 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6695 | These cases require special processing. */ | |
ed2dc618 | 6696 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
6697 | return lookup_dwo_signatured_type (cu, sig); |
6698 | else | |
6699 | return lookup_dwp_signatured_type (cu, sig); | |
6700 | } | |
6701 | else | |
6702 | { | |
6703 | struct signatured_type find_entry, *entry; | |
348e048f | 6704 | |
5989a64e | 6705 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6706 | return NULL; |
6707 | find_entry.signature = sig; | |
9a3c8263 | 6708 | entry = ((struct signatured_type *) |
5989a64e | 6709 | htab_find (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6710 | &find_entry)); |
a2ce51a0 DE |
6711 | return entry; |
6712 | } | |
348e048f | 6713 | } |
18a8505e | 6714 | |
42e7ad6c | 6715 | /* Low level DIE reading support. */ |
348e048f | 6716 | |
d85a05f0 DJ |
6717 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6718 | ||
6719 | static void | |
6720 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6721 | struct dwarf2_cu *cu, |
3019eac3 | 6722 | struct dwarf2_section_info *section, |
685af9cd TT |
6723 | struct dwo_file *dwo_file, |
6724 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6725 | { |
fceca515 | 6726 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6727 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6728 | reader->cu = cu; |
3019eac3 | 6729 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6730 | reader->die_section = section; |
6731 | reader->buffer = section->buffer; | |
f664829e | 6732 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6733 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6734 | } |
6735 | ||
c0ab21c2 | 6736 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6737 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6738 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6739 | already. |
6740 | ||
6741 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6742 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6743 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6744 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6745 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6746 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6747 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6748 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6749 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6750 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6751 | kept around for at least as long as *RESULT_READER. | |
6752 | ||
b0c7bfa9 DE |
6753 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6754 | ||
6755 | static int | |
4ab09049 | 6756 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6757 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6758 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6759 | const char *stub_comp_dir, |
b0c7bfa9 | 6760 | struct die_reader_specs *result_reader, |
d521ce57 | 6761 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6762 | struct die_info **result_comp_unit_die, |
685af9cd | 6763 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6764 | { |
4ab09049 SM |
6765 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
6766 | dwarf2_per_cu_data *per_cu = cu->per_cu; | |
b0c7bfa9 | 6767 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
b0c7bfa9 | 6768 | bfd *abfd; |
d521ce57 | 6769 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6770 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6771 | int i,num_extra_attrs; | |
6772 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6773 | struct die_info *comp_unit_die; |
6774 | ||
b0aeadb3 DE |
6775 | /* At most one of these may be provided. */ |
6776 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6777 | |
b0c7bfa9 DE |
6778 | /* These attributes aren't processed until later: |
6779 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6780 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6781 | referenced later. However, these attributes are found in the stub | |
6782 | which we won't have later. In order to not impose this complication | |
6783 | on the rest of the code, we read them here and copy them to the | |
6784 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6785 | |
6786 | stmt_list = NULL; | |
6787 | low_pc = NULL; | |
6788 | high_pc = NULL; | |
6789 | ranges = NULL; | |
6790 | comp_dir = NULL; | |
6791 | ||
6792 | if (stub_comp_unit_die != NULL) | |
6793 | { | |
6794 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6795 | DWO file. */ | |
4ab09049 | 6796 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6797 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6798 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6799 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6800 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6801 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6802 | ||
a39fdb41 | 6803 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6804 | |
18a8505e AT |
6805 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6806 | here (if needed). We need the value before we can process | |
6807 | DW_AT_ranges. */ | |
a39fdb41 | 6808 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6809 | } |
a2ce51a0 DE |
6810 | else if (stub_comp_dir != NULL) |
6811 | { | |
6812 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6813 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6814 | comp_dir->name = DW_AT_comp_dir; |
6815 | comp_dir->form = DW_FORM_string; | |
6816 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6817 | DW_STRING (comp_dir) = stub_comp_dir; | |
6818 | } | |
b0c7bfa9 DE |
6819 | |
6820 | /* Set up for reading the DWO CU/TU. */ | |
6821 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6822 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6823 | section->read (objfile); |
6824 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6825 | begin_info_ptr = info_ptr = (section->buffer |
6826 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6827 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6828 | |
4ab09049 | 6829 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6830 | { |
4ab09049 | 6831 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6832 | |
ed2dc618 SM |
6833 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6834 | &cu->header, section, | |
b0c7bfa9 | 6835 | dwo_abbrev_section, |
43988095 | 6836 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6837 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6838 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6839 | { |
6840 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6841 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6842 | hex_string (sig_type->signature), |
43988095 | 6843 | hex_string (cu->header.signature), |
9d8780f0 | 6844 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6845 | bfd_get_filename (abfd)); |
6846 | } | |
9c541725 | 6847 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6848 | /* For DWOs coming from DWP files, we don't know the CU length |
6849 | nor the type's offset in the TU until now. */ | |
4057dfde | 6850 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6851 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6852 | |
6853 | /* Establish the type offset that can be used to lookup the type. | |
6854 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6855 | sig_type->type_offset_in_section |
6856 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6857 | } |
6858 | else | |
6859 | { | |
ed2dc618 SM |
6860 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6861 | &cu->header, section, | |
b0c7bfa9 | 6862 | dwo_abbrev_section, |
43988095 | 6863 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6864 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6865 | /* For DWOs coming from DWP files, we don't know the CU length |
6866 | until now. */ | |
4057dfde | 6867 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6868 | } |
6869 | ||
685af9cd | 6870 | *result_dwo_abbrev_table |
86de1d91 TT |
6871 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6872 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6873 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6874 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6875 | |
6876 | /* Read in the die, but leave space to copy over the attributes | |
6877 | from the stub. This has the benefit of simplifying the rest of | |
6878 | the code - all the work to maintain the illusion of a single | |
6879 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6880 | num_extra_attrs = ((stmt_list != NULL) | |
6881 | + (low_pc != NULL) | |
6882 | + (high_pc != NULL) | |
6883 | + (ranges != NULL) | |
6884 | + (comp_dir != NULL)); | |
6885 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6886 | num_extra_attrs); |
b0c7bfa9 DE |
6887 | |
6888 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6889 | comp_unit_die = *result_comp_unit_die; | |
6890 | i = comp_unit_die->num_attrs; | |
6891 | if (stmt_list != NULL) | |
6892 | comp_unit_die->attrs[i++] = *stmt_list; | |
6893 | if (low_pc != NULL) | |
6894 | comp_unit_die->attrs[i++] = *low_pc; | |
6895 | if (high_pc != NULL) | |
6896 | comp_unit_die->attrs[i++] = *high_pc; | |
6897 | if (ranges != NULL) | |
6898 | comp_unit_die->attrs[i++] = *ranges; | |
6899 | if (comp_dir != NULL) | |
6900 | comp_unit_die->attrs[i++] = *comp_dir; | |
6901 | comp_unit_die->num_attrs += num_extra_attrs; | |
6902 | ||
b4f54984 | 6903 | if (dwarf_die_debug) |
bf6af496 DE |
6904 | { |
6905 | fprintf_unfiltered (gdb_stdlog, | |
6906 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6907 | section->get_name (), |
bf6af496 DE |
6908 | (unsigned) (begin_info_ptr - section->buffer), |
6909 | bfd_get_filename (abfd)); | |
b4f54984 | 6910 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6911 | } |
6912 | ||
b0c7bfa9 DE |
6913 | /* Skip dummy compilation units. */ |
6914 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6915 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6916 | return 0; | |
6917 | ||
6918 | *result_info_ptr = info_ptr; | |
6919 | return 1; | |
6920 | } | |
6921 | ||
a084a2a6 AT |
6922 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6923 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6924 | signature is part of the header. */ | |
6925 | static gdb::optional<ULONGEST> | |
6926 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6927 | { | |
6928 | if (cu->header.version >= 5) | |
6929 | return cu->header.signature; | |
6930 | struct attribute *attr; | |
6931 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6932 | if (attr == nullptr) | |
6933 | return gdb::optional<ULONGEST> (); | |
6934 | return DW_UNSND (attr); | |
6935 | } | |
6936 | ||
c0ab21c2 | 6937 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6938 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6939 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6940 | |
6941 | static struct dwo_unit * | |
4ab09049 | 6942 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 6943 | { |
4ab09049 | 6944 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 6945 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6946 | const char *comp_dir; |
b0c7bfa9 | 6947 | |
a2ce51a0 DE |
6948 | gdb_assert (cu != NULL); |
6949 | ||
b0c7bfa9 | 6950 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6951 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6952 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 6953 | |
4ab09049 SM |
6954 | if (per_cu->is_debug_types) |
6955 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
6956 | else |
6957 | { | |
a084a2a6 | 6958 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 6959 | |
a084a2a6 | 6960 | if (!signature.has_value ()) |
b0c7bfa9 DE |
6961 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6962 | " [in module %s]"), | |
4ab09049 SM |
6963 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
6964 | ||
6965 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
6966 | } |
6967 | ||
b0c7bfa9 DE |
6968 | return dwo_unit; |
6969 | } | |
6970 | ||
c0ab21c2 | 6971 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6972 | See it for a description of the parameters. |
fcd3b13d | 6973 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6974 | |
c0ab21c2 | 6975 | void |
9e021579 SM |
6976 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
6977 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 6978 | dwarf2_cu *existing_cu) |
a2ce51a0 | 6979 | { |
a2ce51a0 | 6980 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6981 | |
6982 | /* Verify we can do the following downcast, and that we have the | |
6983 | data we need. */ | |
6984 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6985 | sig_type = (struct signatured_type *) this_cu; | |
6986 | gdb_assert (sig_type->dwo_unit != NULL); | |
6987 | ||
2e671100 SM |
6988 | dwarf2_cu *cu; |
6989 | ||
6990 | if (existing_cu != nullptr) | |
6aa5f3a6 | 6991 | { |
2e671100 SM |
6992 | cu = existing_cu; |
6993 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6994 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6995 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6996 | } |
6997 | else | |
6998 | { | |
7188ed02 SM |
6999 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
7000 | in per_objfile yet. */ | |
7001 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); | |
9e021579 | 7002 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 7003 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
7004 | } |
7005 | ||
7006 | /* A future optimization, if needed, would be to use an existing | |
7007 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7008 | could share abbrev tables. */ | |
a2ce51a0 | 7009 | |
2e671100 | 7010 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7011 | NULL /* stub_comp_unit_die */, |
7012 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 7013 | this, &info_ptr, |
3e225074 | 7014 | &comp_unit_die, |
c0ab21c2 | 7015 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7016 | { |
7017 | /* Dummy die. */ | |
c0ab21c2 | 7018 | dummy_p = true; |
a2ce51a0 | 7019 | } |
a2ce51a0 DE |
7020 | } |
7021 | ||
fd820528 | 7022 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7023 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7024 | |
f4dc4d17 DE |
7025 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7026 | Otherwise the table specified in the comp unit header is read in and used. | |
7027 | This is an optimization for when we already have the abbrev table. | |
7028 | ||
2e671100 SM |
7029 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
7030 | allocated. */ | |
aaa75496 | 7031 | |
ab432490 SM |
7032 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
7033 | dwarf2_per_objfile *dwarf2_per_objfile, | |
c0ab21c2 | 7034 | struct abbrev_table *abbrev_table, |
2e671100 | 7035 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
7036 | bool skip_partial) |
7037 | : die_reader_specs {}, | |
6751ebae | 7038 | m_this_cu (this_cu) |
c906108c | 7039 | { |
dee91e82 | 7040 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7041 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7042 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 7043 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7044 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7045 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7046 | /* Non-zero if CU currently points to a DWO file and we need to |
7047 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7048 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7049 | int rereading_dwo_cu = 0; |
c906108c | 7050 | |
b4f54984 | 7051 | if (dwarf_die_debug) |
9d8780f0 | 7052 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7053 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7054 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7055 | |
a2ce51a0 DE |
7056 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7057 | file (instead of going through the stub), short-circuit all of this. */ | |
7058 | if (this_cu->reading_dwo_directly) | |
7059 | { | |
7060 | /* Narrow down the scope of possibilities to have to understand. */ | |
7061 | gdb_assert (this_cu->is_debug_types); | |
7062 | gdb_assert (abbrev_table == NULL); | |
2e671100 | 7063 | init_tu_and_read_dwo_dies (this_cu, dwarf2_per_objfile, existing_cu); |
a2ce51a0 DE |
7064 | return; |
7065 | } | |
7066 | ||
dee91e82 | 7067 | /* This is cheap if the section is already read in. */ |
96b79293 | 7068 | section->read (objfile); |
dee91e82 | 7069 | |
9c541725 | 7070 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7071 | |
7072 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7073 | |
2e671100 SM |
7074 | dwarf2_cu *cu; |
7075 | ||
7076 | if (existing_cu != nullptr) | |
dee91e82 | 7077 | { |
2e671100 | 7078 | cu = existing_cu; |
42e7ad6c DE |
7079 | /* If this CU is from a DWO file we need to start over, we need to |
7080 | refetch the attributes from the skeleton CU. | |
7081 | This could be optimized by retrieving those attributes from when we | |
7082 | were here the first time: the previous comp_unit_die was stored in | |
7083 | comp_unit_obstack. But there's no data yet that we need this | |
7084 | optimization. */ | |
7085 | if (cu->dwo_unit != NULL) | |
7086 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7087 | } |
7088 | else | |
7089 | { | |
7188ed02 SM |
7090 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
7091 | in per_objfile yet. */ | |
7092 | gdb_assert (dwarf2_per_objfile->get_cu (this_cu) == nullptr); | |
9e021579 | 7093 | m_new_cu.reset (new dwarf2_cu (this_cu, dwarf2_per_objfile)); |
c0ab21c2 | 7094 | cu = m_new_cu.get (); |
42e7ad6c | 7095 | } |
dee91e82 | 7096 | |
b0c7bfa9 | 7097 | /* Get the header. */ |
9c541725 | 7098 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7099 | { |
7100 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7101 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7102 | } |
7103 | else | |
7104 | { | |
3019eac3 | 7105 | if (this_cu->is_debug_types) |
dee91e82 | 7106 | { |
ed2dc618 SM |
7107 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7108 | &cu->header, section, | |
4bdcc0c1 | 7109 | abbrev_section, info_ptr, |
43988095 | 7110 | rcuh_kind::TYPE); |
dee91e82 | 7111 | |
42e7ad6c DE |
7112 | /* Since per_cu is the first member of struct signatured_type, |
7113 | we can go from a pointer to one to a pointer to the other. */ | |
7114 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7115 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7116 | gdb_assert (sig_type->type_offset_in_tu |
7117 | == cu->header.type_cu_offset_in_tu); | |
7118 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7119 | |
42e7ad6c DE |
7120 | /* LENGTH has not been set yet for type units if we're |
7121 | using .gdb_index. */ | |
4057dfde | 7122 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7123 | |
7124 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7125 | sig_type->type_offset_in_section = |
7126 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7127 | |
7128 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7129 | } |
7130 | else | |
7131 | { | |
ed2dc618 SM |
7132 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7133 | &cu->header, section, | |
4bdcc0c1 | 7134 | abbrev_section, |
43988095 JK |
7135 | info_ptr, |
7136 | rcuh_kind::COMPILE); | |
dee91e82 | 7137 | |
9c541725 | 7138 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7139 | if (this_cu->length == 0) |
7140 | this_cu->length = cu->header.get_length (); | |
7141 | else | |
7142 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7143 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7144 | } |
7145 | } | |
10b3939b | 7146 | |
6caca83c | 7147 | /* Skip dummy compilation units. */ |
dee91e82 | 7148 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7149 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7150 | { |
7151 | dummy_p = true; | |
7152 | return; | |
7153 | } | |
6caca83c | 7154 | |
433df2d4 DE |
7155 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7156 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7157 | done. */ |
f4dc4d17 | 7158 | if (abbrev_table != NULL) |
685af9cd TT |
7159 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7160 | else | |
f4dc4d17 | 7161 | { |
c0ab21c2 | 7162 | m_abbrev_table_holder |
86de1d91 TT |
7163 | = abbrev_table::read (objfile, abbrev_section, |
7164 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 7165 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7166 | } |
af703f96 | 7167 | |
dee91e82 | 7168 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7169 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7170 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7171 | |
58f0c718 | 7172 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7173 | { |
7174 | dummy_p = true; | |
7175 | return; | |
7176 | } | |
58f0c718 | 7177 | |
b0c7bfa9 | 7178 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7179 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7180 | table from the DWO file and pass the ownership over to us. It will be | |
7181 | referenced from READER, so we must make sure to free it after we're done | |
7182 | with READER. | |
7183 | ||
b0c7bfa9 DE |
7184 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7185 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7186 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7187 | if (dwo_name != nullptr) |
3019eac3 | 7188 | { |
3019eac3 | 7189 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7190 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7191 | |
3e225074 | 7192 | if (comp_unit_die->has_children) |
6a506a2d | 7193 | { |
b98664d3 | 7194 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7195 | " has children (offset %s) [in module %s]"), |
7196 | sect_offset_str (this_cu->sect_off), | |
7197 | bfd_get_filename (abfd)); | |
6a506a2d | 7198 | } |
4ab09049 | 7199 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7200 | if (dwo_unit != NULL) |
3019eac3 | 7201 | { |
4ab09049 | 7202 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7203 | comp_unit_die, NULL, |
c0ab21c2 | 7204 | this, &info_ptr, |
3e225074 | 7205 | &dwo_comp_unit_die, |
c0ab21c2 | 7206 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7207 | { |
7208 | /* Dummy die. */ | |
c0ab21c2 | 7209 | dummy_p = true; |
6a506a2d DE |
7210 | return; |
7211 | } | |
7212 | comp_unit_die = dwo_comp_unit_die; | |
7213 | } | |
7214 | else | |
7215 | { | |
7216 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7217 | the stub. A complaint has already been logged. There's | |
7218 | not much more we can do except pass on the stub DIE to | |
7219 | die_reader_func. We don't want to throw an error on bad | |
7220 | debug info. */ | |
3019eac3 DE |
7221 | } |
7222 | } | |
c0ab21c2 | 7223 | } |
3019eac3 | 7224 | |
6751ebae TT |
7225 | void |
7226 | cutu_reader::keep () | |
c0ab21c2 | 7227 | { |
b0c7bfa9 | 7228 | /* Done, clean up. */ |
6751ebae TT |
7229 | gdb_assert (!dummy_p); |
7230 | if (m_new_cu != NULL) | |
348e048f | 7231 | { |
7188ed02 SM |
7232 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
7233 | now. */ | |
7234 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; | |
7235 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7236 | } |
dee91e82 DE |
7237 | } |
7238 | ||
18a8505e AT |
7239 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7240 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7241 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7242 | |
7243 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7244 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7245 | |
7246 | We fill in THIS_CU->length. | |
7247 | ||
dee91e82 | 7248 | THIS_CU->cu is always freed when done. |
3019eac3 | 7249 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7250 | to care whether it refers to the "main" CU or the DWO CU. |
7251 | ||
7252 | When parent_cu is passed, it is used to provide a default value for | |
7253 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7254 | |
ab432490 SM |
7255 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
7256 | dwarf2_per_objfile *dwarf2_per_objfile, | |
c0ab21c2 TT |
7257 | struct dwarf2_cu *parent_cu, |
7258 | struct dwo_file *dwo_file) | |
7259 | : die_reader_specs {}, | |
7260 | m_this_cu (this_cu) | |
dee91e82 DE |
7261 | { |
7262 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 7263 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7264 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7265 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7266 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7267 | |
b4f54984 | 7268 | if (dwarf_die_debug) |
9d8780f0 | 7269 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7270 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7271 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7272 | |
7188ed02 | 7273 | gdb_assert (dwarf2_per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7274 | |
33e80786 DE |
7275 | abbrev_section = (dwo_file != NULL |
7276 | ? &dwo_file->sections.abbrev | |
7277 | : get_abbrev_section_for_cu (this_cu)); | |
7278 | ||
dee91e82 | 7279 | /* This is cheap if the section is already read in. */ |
96b79293 | 7280 | section->read (objfile); |
dee91e82 | 7281 | |
9e021579 | 7282 | m_new_cu.reset (new dwarf2_cu (this_cu, dwarf2_per_objfile)); |
dee91e82 | 7283 | |
9c541725 | 7284 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 7285 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 7286 | &m_new_cu->header, section, |
4bdcc0c1 | 7287 | abbrev_section, info_ptr, |
43988095 JK |
7288 | (this_cu->is_debug_types |
7289 | ? rcuh_kind::TYPE | |
7290 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7291 | |
18a8505e AT |
7292 | if (parent_cu != nullptr) |
7293 | { | |
c0ab21c2 TT |
7294 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7295 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7296 | } |
4057dfde | 7297 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7298 | |
7299 | /* Skip dummy compilation units. */ | |
7300 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7301 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7302 | { |
7303 | dummy_p = true; | |
7304 | return; | |
7305 | } | |
72bf9492 | 7306 | |
c0ab21c2 | 7307 | m_abbrev_table_holder |
86de1d91 TT |
7308 | = abbrev_table::read (objfile, abbrev_section, |
7309 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 7310 | |
c0ab21c2 TT |
7311 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7312 | m_abbrev_table_holder.get ()); | |
3e225074 | 7313 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7314 | } |
7315 | ||
0018ea6f DE |
7316 | \f |
7317 | /* Type Unit Groups. | |
dee91e82 | 7318 | |
0018ea6f DE |
7319 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7320 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7321 | so that all types coming from the same compilation (.o file) are grouped | |
7322 | together. A future step could be to put the types in the same symtab as | |
7323 | the CU the types ultimately came from. */ | |
ff013f42 | 7324 | |
f4dc4d17 DE |
7325 | static hashval_t |
7326 | hash_type_unit_group (const void *item) | |
7327 | { | |
9a3c8263 SM |
7328 | const struct type_unit_group *tu_group |
7329 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7330 | |
094b34ac | 7331 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7332 | } |
348e048f DE |
7333 | |
7334 | static int | |
f4dc4d17 | 7335 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7336 | { |
9a3c8263 SM |
7337 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7338 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7339 | |
094b34ac | 7340 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7341 | } |
348e048f | 7342 | |
f4dc4d17 DE |
7343 | /* Allocate a hash table for type unit groups. */ |
7344 | ||
eaa5fa8b | 7345 | static htab_up |
298e9637 | 7346 | allocate_type_unit_groups_table () |
f4dc4d17 | 7347 | { |
eaa5fa8b TT |
7348 | return htab_up (htab_create_alloc (3, |
7349 | hash_type_unit_group, | |
7350 | eq_type_unit_group, | |
7351 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7352 | } |
dee91e82 | 7353 | |
f4dc4d17 DE |
7354 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7355 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7356 | of any one psymtab grow too big. */ | |
7357 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7358 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7359 | |
094b34ac | 7360 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7361 | Create the type_unit_group object used to hold one or more TUs. */ |
7362 | ||
7363 | static struct type_unit_group * | |
094b34ac | 7364 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7365 | { |
5e22e966 | 7366 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
1859c670 | 7367 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
094b34ac | 7368 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7369 | struct type_unit_group *tu_group; |
f4dc4d17 | 7370 | |
5989a64e | 7371 | tu_group = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
f4dc4d17 | 7372 | struct type_unit_group); |
094b34ac | 7373 | per_cu = &tu_group->per_cu; |
1859c670 | 7374 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7375 | |
1859c670 | 7376 | if (per_bfd->using_index) |
094b34ac | 7377 | { |
1859c670 | 7378 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7379 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7380 | } |
7381 | else | |
7382 | { | |
9c541725 | 7383 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7384 | dwarf2_psymtab *pst; |
528e1572 | 7385 | std::string name; |
094b34ac DE |
7386 | |
7387 | /* Give the symtab a useful name for debug purposes. */ | |
7388 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7389 | name = string_printf ("<type_units_%d>", |
7390 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7391 | else |
528e1572 | 7392 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7393 | |
7aa104c4 | 7394 | pst = create_partial_symtab (per_cu, dwarf2_per_objfile, name.c_str ()); |
6d94535f | 7395 | pst->anonymous = true; |
094b34ac | 7396 | } |
f4dc4d17 | 7397 | |
094b34ac | 7398 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7399 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7400 | |
7401 | return tu_group; | |
7402 | } | |
7403 | ||
094b34ac DE |
7404 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7405 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7406 | |
7407 | static struct type_unit_group * | |
ff39bb5e | 7408 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7409 | { |
5e22e966 | 7410 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
5989a64e | 7411 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
f4dc4d17 DE |
7412 | struct type_unit_group *tu_group; |
7413 | void **slot; | |
7414 | unsigned int line_offset; | |
7415 | struct type_unit_group type_unit_group_for_lookup; | |
7416 | ||
5989a64e SM |
7417 | if (dwarf2_per_objfile->per_bfd->type_unit_groups == NULL) |
7418 | dwarf2_per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7419 | |
7420 | /* Do we need to create a new group, or can we use an existing one? */ | |
7421 | ||
7422 | if (stmt_list) | |
7423 | { | |
7424 | line_offset = DW_UNSND (stmt_list); | |
7425 | ++tu_stats->nr_symtab_sharers; | |
7426 | } | |
7427 | else | |
7428 | { | |
7429 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7430 | We can do various things here like create one group per TU or | |
7431 | spread them over multiple groups to split up the expansion work. | |
7432 | To avoid worst case scenarios (too many groups or too large groups) | |
7433 | we, umm, group them in bunches. */ | |
7434 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7435 | | (tu_stats->nr_stmt_less_type_units | |
7436 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7437 | ++tu_stats->nr_stmt_less_type_units; | |
7438 | } | |
7439 | ||
094b34ac | 7440 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7441 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
5989a64e | 7442 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7443 | &type_unit_group_for_lookup, INSERT); |
7444 | if (*slot != NULL) | |
7445 | { | |
9a3c8263 | 7446 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7447 | gdb_assert (tu_group != NULL); |
7448 | } | |
7449 | else | |
7450 | { | |
9c541725 | 7451 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7452 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7453 | *slot = tu_group; |
7454 | ++tu_stats->nr_symtabs; | |
7455 | } | |
7456 | ||
7457 | return tu_group; | |
7458 | } | |
0018ea6f DE |
7459 | \f |
7460 | /* Partial symbol tables. */ | |
7461 | ||
7462 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7463 | ||
7464 | The caller must fill in the following details: | |
7465 | dirname, textlow, texthigh. */ | |
7466 | ||
891813be | 7467 | static dwarf2_psymtab * |
7aa104c4 SM |
7468 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7469 | dwarf2_per_objfile *per_objfile, | |
7470 | const char *name) | |
0018ea6f | 7471 | { |
7aa104c4 | 7472 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7473 | dwarf2_psymtab *pst; |
0018ea6f | 7474 | |
9f4e76a4 | 7475 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7476 | |
6d94535f | 7477 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7478 | |
7479 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7480 | per_cu->v.psymtab = pst; |
7481 | ||
7482 | return pst; | |
7483 | } | |
7484 | ||
c0ab21c2 | 7485 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7486 | |
7487 | static void | |
7488 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7489 | const gdb_byte *info_ptr, |
0018ea6f | 7490 | struct die_info *comp_unit_die, |
c0ab21c2 | 7491 | enum language pretend_language) |
0018ea6f DE |
7492 | { |
7493 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7494 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7495 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7496 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7497 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7498 | CORE_ADDR baseaddr; |
7499 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7500 | dwarf2_psymtab *pst; |
3a2b436a | 7501 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7502 | const char *filename; |
0018ea6f | 7503 | |
0018ea6f DE |
7504 | gdb_assert (! per_cu->is_debug_types); |
7505 | ||
c0ab21c2 | 7506 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7507 | |
0018ea6f | 7508 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7509 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7510 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7511 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7512 | if (filename == NULL) | |
0018ea6f | 7513 | filename = ""; |
2e927613 TV |
7514 | else if (strcmp (filename, artificial) == 0) |
7515 | { | |
7516 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7517 | sect_offset_str (per_cu->sect_off), |
7518 | (char *) NULL)); | |
2e927613 TV |
7519 | filename = debug_filename.get (); |
7520 | } | |
0018ea6f | 7521 | |
7aa104c4 | 7522 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7523 | |
7524 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7525 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7526 | |
b3b3bada | 7527 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7528 | |
7529 | dwarf2_find_base_address (comp_unit_die, cu); | |
7530 | ||
7531 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7532 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7533 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7534 | &best_highpc, cu, pst); | |
7535 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7536 | { |
7537 | CORE_ADDR low | |
7538 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7539 | - baseaddr); | |
7540 | CORE_ADDR high | |
7541 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7542 | - baseaddr - 1); | |
7543 | /* Store the contiguous range if it is not empty; it can be | |
7544 | empty for CUs with no code. */ | |
d320c2b5 TT |
7545 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7546 | low, high, pst); | |
79748972 | 7547 | } |
0018ea6f DE |
7548 | |
7549 | /* Check if comp unit has_children. | |
7550 | If so, read the rest of the partial symbols from this comp unit. | |
7551 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7552 | if (comp_unit_die->has_children) |
0018ea6f DE |
7553 | { |
7554 | struct partial_die_info *first_die; | |
7555 | CORE_ADDR lowpc, highpc; | |
7556 | ||
7557 | lowpc = ((CORE_ADDR) -1); | |
7558 | highpc = ((CORE_ADDR) 0); | |
7559 | ||
7560 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7561 | ||
7562 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7563 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7564 | |
7565 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7566 | complaints from `maint check'. */ | |
7567 | if (lowpc == ((CORE_ADDR) -1)) | |
7568 | lowpc = highpc; | |
7569 | ||
7570 | /* If the compilation unit didn't have an explicit address range, | |
7571 | then use the information extracted from its child dies. */ | |
e385593e | 7572 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7573 | { |
7574 | best_lowpc = lowpc; | |
7575 | best_highpc = highpc; | |
7576 | } | |
7577 | } | |
4ae976d1 | 7578 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7579 | best_lowpc + baseaddr) |
7580 | - baseaddr); | |
4ae976d1 | 7581 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7582 | best_highpc + baseaddr) |
7583 | - baseaddr); | |
0018ea6f | 7584 | |
8763cede | 7585 | end_psymtab_common (objfile, pst); |
0018ea6f | 7586 | |
ae640021 | 7587 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7588 | { |
7589 | int i; | |
ae640021 | 7590 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7591 | |
7592 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7593 | post-pass. */ | |
7594 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7595 | pst->dependencies |
7596 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7597 | for (i = 0; i < len; ++i) |
7598 | { | |
7599 | pst->dependencies[i] | |
7600 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7601 | } | |
0018ea6f | 7602 | |
ae640021 | 7603 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7604 | } |
7605 | ||
7606 | /* Get the list of files included in the current compilation unit, | |
7607 | and build a psymtab for each of them. */ | |
7608 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7609 | ||
b4f54984 | 7610 | if (dwarf_read_debug) |
b926417a TT |
7611 | fprintf_unfiltered (gdb_stdlog, |
7612 | "Psymtab for %s unit @%s: %s - %s" | |
7613 | ", %d global, %d static syms\n", | |
7614 | per_cu->is_debug_types ? "type" : "comp", | |
7615 | sect_offset_str (per_cu->sect_off), | |
7616 | paddress (gdbarch, pst->text_low (objfile)), | |
7617 | paddress (gdbarch, pst->text_high (objfile)), | |
7618 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7619 | } |
7620 | ||
7621 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7622 | Process compilation unit THIS_CU for a psymtab. */ | |
7623 | ||
7624 | static void | |
ab432490 SM |
7625 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7626 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7627 | bool want_partial_unit, |
b93601f3 | 7628 | enum language pretend_language) |
0018ea6f DE |
7629 | { |
7630 | /* If this compilation unit was already read in, free the | |
7631 | cached copy in order to read it in again. This is | |
7632 | necessary because we skipped some symbols when we first | |
7633 | read in the compilation unit (see load_partial_dies). | |
7634 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7635 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7636 | |
2e671100 | 7637 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7638 | |
58990295 TV |
7639 | switch (reader.comp_unit_die->tag) |
7640 | { | |
7641 | case DW_TAG_compile_unit: | |
7642 | this_cu->unit_type = DW_UT_compile; | |
7643 | break; | |
7644 | case DW_TAG_partial_unit: | |
7645 | this_cu->unit_type = DW_UT_partial; | |
7646 | break; | |
7647 | default: | |
7648 | abort (); | |
7649 | } | |
7650 | ||
c0ab21c2 | 7651 | if (reader.dummy_p) |
f1902523 | 7652 | { |
c0ab21c2 | 7653 | /* Nothing. */ |
f1902523 | 7654 | } |
c0ab21c2 | 7655 | else if (this_cu->is_debug_types) |
3e225074 TT |
7656 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7657 | reader.comp_unit_die); | |
135f5437 TT |
7658 | else if (want_partial_unit |
7659 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7660 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7661 | reader.comp_unit_die, | |
c0ab21c2 | 7662 | pretend_language); |
0018ea6f | 7663 | |
7188ed02 | 7664 | this_cu->lang = reader.cu->language; |
58990295 | 7665 | |
0018ea6f | 7666 | /* Age out any secondary CUs. */ |
7188ed02 | 7667 | per_objfile->age_comp_units (); |
0018ea6f | 7668 | } |
f4dc4d17 DE |
7669 | |
7670 | /* Reader function for build_type_psymtabs. */ | |
7671 | ||
7672 | static void | |
7673 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7674 | const gdb_byte *info_ptr, |
3e225074 | 7675 | struct die_info *type_unit_die) |
f4dc4d17 | 7676 | { |
5e22e966 | 7677 | struct dwarf2_per_objfile *dwarf2_per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7678 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7679 | struct dwarf2_cu *cu = reader->cu; | |
7680 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7681 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7682 | struct type_unit_group *tu_group; |
7683 | struct attribute *attr; | |
7684 | struct partial_die_info *first_die; | |
7685 | CORE_ADDR lowpc, highpc; | |
891813be | 7686 | dwarf2_psymtab *pst; |
f4dc4d17 | 7687 | |
0186c6a7 DE |
7688 | gdb_assert (per_cu->is_debug_types); |
7689 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7690 | |
3e225074 | 7691 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7692 | return; |
7693 | ||
052c8bb8 | 7694 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7695 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7696 | |
df07e2c7 | 7697 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7698 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7699 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7700 | |
7701 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
7aa104c4 | 7702 | pst = create_partial_symtab (per_cu, dwarf2_per_objfile, ""); |
6d94535f | 7703 | pst->anonymous = true; |
f4dc4d17 DE |
7704 | |
7705 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7706 | ||
7707 | lowpc = (CORE_ADDR) -1; | |
7708 | highpc = (CORE_ADDR) 0; | |
7709 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7710 | ||
8763cede | 7711 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7712 | } |
7713 | ||
73051182 DE |
7714 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7715 | ||
7716 | struct tu_abbrev_offset | |
7717 | { | |
b2bdb8cf SM |
7718 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7719 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7720 | {} | |
7721 | ||
7722 | signatured_type *sig_type; | |
73051182 DE |
7723 | sect_offset abbrev_offset; |
7724 | }; | |
7725 | ||
484cf504 | 7726 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7727 | |
484cf504 TT |
7728 | static bool |
7729 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7730 | const struct tu_abbrev_offset &b) | |
73051182 | 7731 | { |
484cf504 | 7732 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7733 | } |
7734 | ||
7735 | /* Efficiently read all the type units. | |
7736 | This does the bulk of the work for build_type_psymtabs. | |
7737 | ||
7738 | The efficiency is because we sort TUs by the abbrev table they use and | |
7739 | only read each abbrev table once. In one program there are 200K TUs | |
7740 | sharing 8K abbrev tables. | |
7741 | ||
7742 | The main purpose of this function is to support building the | |
5989a64e | 7743 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7744 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7745 | can collapse the search space by grouping them by stmt_list. | |
7746 | The savings can be significant, in the same program from above the 200K TUs | |
7747 | share 8K stmt_list tables. | |
7748 | ||
7749 | FUNC is expected to call get_type_unit_group, which will create the | |
7750 | struct type_unit_group if necessary and add it to | |
5989a64e | 7751 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7752 | |
7753 | static void | |
ed2dc618 | 7754 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 7755 | { |
5989a64e | 7756 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
685af9cd | 7757 | abbrev_table_up abbrev_table; |
73051182 | 7758 | sect_offset abbrev_offset; |
73051182 DE |
7759 | |
7760 | /* It's up to the caller to not call us multiple times. */ | |
5989a64e | 7761 | gdb_assert (dwarf2_per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7762 | |
5989a64e | 7763 | if (dwarf2_per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7764 | return; |
7765 | ||
7766 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7767 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7768 | read each abbrev table in. | |
7769 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7770 | This is simpler and efficient enough for now. | |
7771 | ||
7772 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7773 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7774 | stmt_list value too so in practice this should work well. | |
7775 | ||
7776 | The basic algorithm here is: | |
7777 | ||
7778 | sort TUs by abbrev table | |
7779 | for each TU with same abbrev table: | |
7780 | read abbrev table if first user | |
7781 | read TU top level DIE | |
7782 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7783 | call FUNC */ | |
7784 | ||
b4f54984 | 7785 | if (dwarf_read_debug) |
73051182 DE |
7786 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7787 | ||
7788 | /* Sort in a separate table to maintain the order of all_type_units | |
7789 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7790 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
5989a64e | 7791 | sorted_by_abbrev.reserve (dwarf2_per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7792 | |
5989a64e | 7793 | for (signatured_type *sig_type : dwarf2_per_objfile->per_bfd->all_type_units) |
b2bdb8cf SM |
7794 | sorted_by_abbrev.emplace_back |
7795 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
7796 | sig_type->per_cu.section, | |
7797 | sig_type->per_cu.sect_off)); | |
73051182 | 7798 | |
484cf504 TT |
7799 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7800 | sort_tu_by_abbrev_offset); | |
73051182 | 7801 | |
9c541725 | 7802 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7803 | |
b2bdb8cf | 7804 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7805 | { |
73051182 DE |
7806 | /* Switch to the next abbrev table if necessary. */ |
7807 | if (abbrev_table == NULL | |
b2bdb8cf | 7808 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7809 | { |
b2bdb8cf | 7810 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7811 | abbrev_table = |
86de1d91 | 7812 | abbrev_table::read (dwarf2_per_objfile->objfile, |
5989a64e | 7813 | &dwarf2_per_objfile->per_bfd->abbrev, |
86de1d91 | 7814 | abbrev_offset); |
73051182 DE |
7815 | ++tu_stats->nr_uniq_abbrev_tables; |
7816 | } | |
7817 | ||
ab432490 | 7818 | cutu_reader reader (&tu.sig_type->per_cu, dwarf2_per_objfile, |
2e671100 | 7819 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7820 | if (!reader.dummy_p) |
7821 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7822 | reader.comp_unit_die); |
73051182 | 7823 | } |
6aa5f3a6 | 7824 | } |
73051182 | 7825 | |
6aa5f3a6 DE |
7826 | /* Print collected type unit statistics. */ |
7827 | ||
7828 | static void | |
ed2dc618 | 7829 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 | 7830 | { |
5989a64e | 7831 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
6aa5f3a6 DE |
7832 | |
7833 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf | 7834 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
5989a64e | 7835 | dwarf2_per_objfile->per_bfd->all_type_units.size ()); |
6aa5f3a6 DE |
7836 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7837 | tu_stats->nr_uniq_abbrev_tables); | |
7838 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7839 | tu_stats->nr_symtabs); | |
7840 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7841 | tu_stats->nr_symtab_sharers); | |
7842 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7843 | tu_stats->nr_stmt_less_type_units); | |
7844 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7845 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7846 | } |
7847 | ||
f4dc4d17 DE |
7848 | /* Traversal function for build_type_psymtabs. */ |
7849 | ||
7850 | static int | |
7851 | build_type_psymtab_dependencies (void **slot, void *info) | |
7852 | { | |
ed2dc618 SM |
7853 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7854 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
7855 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7856 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 7857 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7858 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7859 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7860 | int i; |
7861 | ||
7862 | gdb_assert (len > 0); | |
197400e8 | 7863 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7864 | |
7865 | pst->number_of_dependencies = len; | |
a9342b62 | 7866 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7867 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7868 | { |
df07e2c7 | 7869 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7870 | gdb_assert (iter->per_cu.is_debug_types); |
7871 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7872 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7873 | } |
7874 | ||
df07e2c7 AB |
7875 | delete tu_group->tus; |
7876 | tu_group->tus = nullptr; | |
348e048f DE |
7877 | |
7878 | return 1; | |
7879 | } | |
7880 | ||
7881 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7882 | Build partial symbol tables for the .debug_types comp-units. */ | |
7883 | ||
7884 | static void | |
ed2dc618 | 7885 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 7886 | { |
ed2dc618 | 7887 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
7888 | return; |
7889 | ||
ed2dc618 | 7890 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 7891 | } |
f4dc4d17 | 7892 | |
6aa5f3a6 DE |
7893 | /* Traversal function for process_skeletonless_type_unit. |
7894 | Read a TU in a DWO file and build partial symbols for it. */ | |
7895 | ||
7896 | static int | |
7897 | process_skeletonless_type_unit (void **slot, void *info) | |
7898 | { | |
7899 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
7900 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7901 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
7902 | struct signatured_type find_entry, *entry; |
7903 | ||
7904 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7905 | ||
5989a64e SM |
7906 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
7907 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7908 | |
7909 | find_entry.signature = dwo_unit->signature; | |
5989a64e | 7910 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7911 | &find_entry, INSERT); |
6aa5f3a6 DE |
7912 | /* If we've already seen this type there's nothing to do. What's happening |
7913 | is we're doing our own version of comdat-folding here. */ | |
7914 | if (*slot != NULL) | |
7915 | return 1; | |
7916 | ||
7917 | /* This does the job that create_all_type_units would have done for | |
7918 | this TU. */ | |
ed2dc618 SM |
7919 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
7920 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7921 | *slot = entry; |
7922 | ||
7923 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
2e671100 SM |
7924 | cutu_reader reader (&entry->per_cu, dwarf2_per_objfile, nullptr, nullptr, |
7925 | false); | |
c0ab21c2 TT |
7926 | if (!reader.dummy_p) |
7927 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7928 | reader.comp_unit_die); |
6aa5f3a6 DE |
7929 | |
7930 | return 1; | |
7931 | } | |
7932 | ||
7933 | /* Traversal function for process_skeletonless_type_units. */ | |
7934 | ||
7935 | static int | |
7936 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7937 | { | |
7938 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7939 | ||
7940 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7941 | htab_traverse_noresize (dwo_file->tus.get (), |
7942 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7943 | |
7944 | return 1; | |
7945 | } | |
7946 | ||
7947 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7948 | This is needed in case a TU was emitted without its skeleton. | |
7949 | Note: This can't be done until we know what all the DWO files are. */ | |
7950 | ||
7951 | static void | |
ed2dc618 | 7952 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7953 | { |
7954 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 7955 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
5989a64e | 7956 | && dwarf2_per_objfile->per_bfd->dwo_files != NULL) |
6aa5f3a6 | 7957 | { |
5989a64e | 7958 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 7959 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 7960 | dwarf2_per_objfile); |
6aa5f3a6 | 7961 | } |
348e048f DE |
7962 | } |
7963 | ||
ed2dc618 | 7964 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7965 | |
7966 | static void | |
ed2dc618 | 7967 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 7968 | { |
5989a64e | 7969 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
95554aad | 7970 | { |
891813be | 7971 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7972 | |
36586728 TT |
7973 | if (pst == NULL) |
7974 | continue; | |
7975 | ||
b76e467d | 7976 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7977 | { |
7978 | /* Set the 'user' field only if it is not already set. */ | |
7979 | if (pst->dependencies[j]->user == NULL) | |
7980 | pst->dependencies[j]->user = pst; | |
7981 | } | |
7982 | } | |
7983 | } | |
7984 | ||
93311388 DE |
7985 | /* Build the partial symbol table by doing a quick pass through the |
7986 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7987 | |
93311388 | 7988 | static void |
ed2dc618 | 7989 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 7990 | { |
ed2dc618 | 7991 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 7992 | |
b4f54984 | 7993 | if (dwarf_read_debug) |
45cfd468 DE |
7994 | { |
7995 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 7996 | objfile_name (objfile)); |
45cfd468 DE |
7997 | } |
7998 | ||
76935768 | 7999 | scoped_restore restore_reading_psyms |
5989a64e | 8000 | = make_scoped_restore (&dwarf2_per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 8001 | true); |
98bfdba5 | 8002 | |
5989a64e | 8003 | dwarf2_per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 8004 | |
93311388 DE |
8005 | /* Any cached compilation units will be linked by the per-objfile |
8006 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8007 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8008 | |
ed2dc618 | 8009 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8010 | |
ed2dc618 | 8011 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8012 | |
60606b2c TT |
8013 | /* Create a temporary address map on a temporary obstack. We later |
8014 | copy this to the final obstack. */ | |
8268c778 | 8015 | auto_obstack temp_obstack; |
791afaa2 TT |
8016 | |
8017 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8018 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8019 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8020 | |
5989a64e | 8021 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
8022 | { |
8023 | if (per_cu->v.psymtab != NULL) | |
8024 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
8025 | continue; | |
ab432490 SM |
8026 | process_psymtab_comp_unit (per_cu, dwarf2_per_objfile, false, |
8027 | language_minimal); | |
3d5afab3 | 8028 | } |
ff013f42 | 8029 | |
6aa5f3a6 | 8030 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8031 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8032 | |
8033 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
5989a64e | 8034 | if (dwarf2_per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 8035 | { |
5989a64e | 8036 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->type_unit_groups.get (), |
ed2dc618 | 8037 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8038 | } |
8039 | ||
b4f54984 | 8040 | if (dwarf_read_debug) |
ed2dc618 | 8041 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8042 | |
ed2dc618 | 8043 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8044 | |
d320c2b5 TT |
8045 | objfile->partial_symtabs->psymtabs_addrmap |
8046 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8047 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8048 | /* At this point we want to keep the address map. */ |
8049 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8050 | |
b4f54984 | 8051 | if (dwarf_read_debug) |
45cfd468 | 8052 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8053 | objfile_name (objfile)); |
ae038cb0 DJ |
8054 | } |
8055 | ||
dee91e82 DE |
8056 | /* Load the partial DIEs for a secondary CU into memory. |
8057 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8058 | |
dee91e82 | 8059 | static void |
ab432490 | 8060 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
8061 | dwarf2_per_objfile *per_objfile, |
8062 | dwarf2_cu *existing_cu) | |
dee91e82 | 8063 | { |
2e671100 | 8064 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
8065 | |
8066 | if (!reader.dummy_p) | |
8067 | { | |
8068 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8069 | language_minimal); | |
8070 | ||
8071 | /* Check if comp unit has_children. | |
8072 | If so, read the rest of the partial symbols from this comp unit. | |
8073 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8074 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8075 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8076 | |
8077 | reader.keep (); | |
c0ab21c2 | 8078 | } |
ae038cb0 DJ |
8079 | } |
8080 | ||
ae038cb0 | 8081 | static void |
ed2dc618 | 8082 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8083 | struct dwarf2_section_info *section, |
f1902523 | 8084 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8085 | unsigned int is_dwz) |
ae038cb0 | 8086 | { |
d521ce57 | 8087 | const gdb_byte *info_ptr; |
ed2dc618 | 8088 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8089 | |
b4f54984 | 8090 | if (dwarf_read_debug) |
bf6af496 | 8091 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
8092 | section->get_name (), |
8093 | section->get_file_name ()); | |
bf6af496 | 8094 | |
96b79293 | 8095 | section->read (objfile); |
ae038cb0 | 8096 | |
36586728 | 8097 | info_ptr = section->buffer; |
6e70227d | 8098 | |
36586728 | 8099 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8100 | { |
ae038cb0 | 8101 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8102 | |
9c541725 | 8103 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8104 | |
f1902523 | 8105 | comp_unit_head cu_header; |
ed2dc618 SM |
8106 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8107 | abbrev_section, info_ptr, | |
8108 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8109 | |
8110 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8111 | if (cu_header.unit_type != DW_UT_type) |
5989a64e | 8112 | this_cu = dwarf2_per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8113 | else |
8114 | { | |
5989a64e | 8115 | auto sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8116 | sig_type->signature = cu_header.signature; |
8117 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8118 | this_cu = &sig_type->per_cu; | |
8119 | } | |
8120 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8121 | this_cu->sect_off = sect_off; |
f1902523 | 8122 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8123 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8124 | this_cu->section = section; |
ae038cb0 | 8125 | |
5989a64e | 8126 | dwarf2_per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8127 | |
8128 | info_ptr = info_ptr + this_cu->length; | |
8129 | } | |
36586728 TT |
8130 | } |
8131 | ||
8132 | /* Create a list of all compilation units in OBJFILE. | |
8133 | This is only done for -readnow and building partial symtabs. */ | |
8134 | ||
8135 | static void | |
ed2dc618 | 8136 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8137 | { |
5989a64e SM |
8138 | gdb_assert (dwarf2_per_objfile->per_bfd->all_comp_units.empty ()); |
8139 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->per_bfd->info, | |
8140 | &dwarf2_per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8141 | |
c3699833 | 8142 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
4db1a1dc | 8143 | if (dwz != NULL) |
ed2dc618 | 8144 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8145 | 1); |
c906108c SS |
8146 | } |
8147 | ||
5734ee8b | 8148 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8149 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8150 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8151 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8152 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8153 | |
72bf9492 DJ |
8154 | static void |
8155 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8156 | CORE_ADDR *highpc, int set_addrmap, |
8157 | struct dwarf2_cu *cu) | |
c906108c | 8158 | { |
72bf9492 | 8159 | struct partial_die_info *pdi; |
c906108c | 8160 | |
91c24f0a DC |
8161 | /* Now, march along the PDI's, descending into ones which have |
8162 | interesting children but skipping the children of the other ones, | |
8163 | until we reach the end of the compilation unit. */ | |
c906108c | 8164 | |
72bf9492 | 8165 | pdi = first_die; |
91c24f0a | 8166 | |
72bf9492 DJ |
8167 | while (pdi != NULL) |
8168 | { | |
52356b79 | 8169 | pdi->fixup (cu); |
c906108c | 8170 | |
f55ee35c | 8171 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8172 | children, so we need to look at them. Ditto for anonymous |
8173 | enums. */ | |
933c6fe4 | 8174 | |
72bf9492 | 8175 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8176 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8177 | || pdi->tag == DW_TAG_imported_unit |
8178 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8179 | { |
72bf9492 | 8180 | switch (pdi->tag) |
c906108c SS |
8181 | { |
8182 | case DW_TAG_subprogram: | |
b1dc1806 | 8183 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8184 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8185 | break; |
72929c62 | 8186 | case DW_TAG_constant: |
c906108c SS |
8187 | case DW_TAG_variable: |
8188 | case DW_TAG_typedef: | |
91c24f0a | 8189 | case DW_TAG_union_type: |
317d2668 TV |
8190 | if (!pdi->is_declaration |
8191 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8192 | { |
72bf9492 | 8193 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8194 | } |
8195 | break; | |
c906108c | 8196 | case DW_TAG_class_type: |
680b30c7 | 8197 | case DW_TAG_interface_type: |
c906108c | 8198 | case DW_TAG_structure_type: |
72bf9492 | 8199 | if (!pdi->is_declaration) |
c906108c | 8200 | { |
72bf9492 | 8201 | add_partial_symbol (pdi, cu); |
c906108c | 8202 | } |
b7fee5a3 KS |
8203 | if ((cu->language == language_rust |
8204 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8205 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8206 | set_addrmap, cu); | |
c906108c | 8207 | break; |
91c24f0a | 8208 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8209 | if (!pdi->is_declaration) |
8210 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8211 | break; |
8212 | case DW_TAG_base_type: | |
a02abb62 | 8213 | case DW_TAG_subrange_type: |
c906108c | 8214 | /* File scope base type definitions are added to the partial |
c5aa993b | 8215 | symbol table. */ |
72bf9492 | 8216 | add_partial_symbol (pdi, cu); |
c906108c | 8217 | break; |
d9fa45fe | 8218 | case DW_TAG_namespace: |
cdc07690 | 8219 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8220 | break; |
5d7cb8df | 8221 | case DW_TAG_module: |
59c35742 AB |
8222 | if (!pdi->is_declaration) |
8223 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8224 | break; |
95554aad TT |
8225 | case DW_TAG_imported_unit: |
8226 | { | |
8227 | struct dwarf2_per_cu_data *per_cu; | |
8228 | ||
f4dc4d17 DE |
8229 | /* For now we don't handle imported units in type units. */ |
8230 | if (cu->per_cu->is_debug_types) | |
8231 | { | |
8232 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8233 | " supported in type units [in module %s]"), | |
5e22e966 | 8234 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8235 | } |
8236 | ||
e3b94546 | 8237 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8238 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8239 | |
8240 | /* Go read the partial unit, if needed. */ | |
8241 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8242 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8243 | cu->language); | |
95554aad | 8244 | |
ae640021 | 8245 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8246 | } |
8247 | break; | |
74921315 KS |
8248 | case DW_TAG_imported_declaration: |
8249 | add_partial_symbol (pdi, cu); | |
8250 | break; | |
c906108c SS |
8251 | default: |
8252 | break; | |
8253 | } | |
8254 | } | |
8255 | ||
72bf9492 DJ |
8256 | /* If the die has a sibling, skip to the sibling. */ |
8257 | ||
8258 | pdi = pdi->die_sibling; | |
8259 | } | |
8260 | } | |
8261 | ||
8262 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8263 | |
72bf9492 | 8264 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8265 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8266 | Enumerators are an exception; they use the scope of their parent |
8267 | enumeration type, i.e. the name of the enumeration type is not | |
8268 | prepended to the enumerator. | |
91c24f0a | 8269 | |
72bf9492 DJ |
8270 | There are two complexities. One is DW_AT_specification; in this |
8271 | case "parent" means the parent of the target of the specification, | |
8272 | instead of the direct parent of the DIE. The other is compilers | |
8273 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8274 | the fully qualified name of structure types from their members' | |
8275 | linkage names. This must be done using the DIE's children rather | |
8276 | than the children of any DW_AT_specification target. We only need | |
8277 | to do this for structures at the top level, i.e. if the target of | |
8278 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8279 | have a parent. */ | |
8280 | ||
8281 | /* Compute the scope prefix associated with PDI's parent, in | |
8282 | compilation unit CU. The result will be allocated on CU's | |
8283 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8284 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8285 | static const char * |
72bf9492 DJ |
8286 | partial_die_parent_scope (struct partial_die_info *pdi, |
8287 | struct dwarf2_cu *cu) | |
8288 | { | |
15d034d0 | 8289 | const char *grandparent_scope; |
72bf9492 | 8290 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8291 | |
72bf9492 DJ |
8292 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8293 | then this means the parent of the specification DIE. */ | |
8294 | ||
8295 | real_pdi = pdi; | |
72bf9492 | 8296 | while (real_pdi->has_specification) |
fb816e8b | 8297 | { |
122cf0f2 AB |
8298 | auto res = find_partial_die (real_pdi->spec_offset, |
8299 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8300 | real_pdi = res.pdi; |
8301 | cu = res.cu; | |
8302 | } | |
72bf9492 DJ |
8303 | |
8304 | parent = real_pdi->die_parent; | |
8305 | if (parent == NULL) | |
8306 | return NULL; | |
8307 | ||
8308 | if (parent->scope_set) | |
8309 | return parent->scope; | |
8310 | ||
52356b79 | 8311 | parent->fixup (cu); |
72bf9492 | 8312 | |
10b3939b | 8313 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8314 | |
acebe513 UW |
8315 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8316 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8317 | Work around this problem here. */ | |
8318 | if (cu->language == language_cplus | |
6e70227d | 8319 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8320 | && strcmp (parent->name, "::") == 0 |
8321 | && grandparent_scope == NULL) | |
8322 | { | |
8323 | parent->scope = NULL; | |
8324 | parent->scope_set = 1; | |
8325 | return NULL; | |
8326 | } | |
8327 | ||
0a4b0913 | 8328 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8329 | if (pdi->tag == DW_TAG_enumerator) |
8330 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8331 | parent->scope = grandparent_scope; | |
8332 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8333 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8334 | || parent->tag == DW_TAG_structure_type |
8335 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8336 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8337 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8338 | || parent->tag == DW_TAG_enumeration_type |
8339 | || (cu->language == language_fortran | |
8340 | && parent->tag == DW_TAG_subprogram | |
8341 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8342 | { |
8343 | if (grandparent_scope == NULL) | |
8344 | parent->scope = parent->name; | |
8345 | else | |
3e43a32a MS |
8346 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8347 | grandparent_scope, | |
f55ee35c | 8348 | parent->name, 0, cu); |
72bf9492 | 8349 | } |
72bf9492 DJ |
8350 | else |
8351 | { | |
8352 | /* FIXME drow/2004-04-01: What should we be doing with | |
8353 | function-local names? For partial symbols, we should probably be | |
8354 | ignoring them. */ | |
fa9c3fa0 TT |
8355 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8356 | dwarf_tag_name (parent->tag), | |
8357 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8358 | parent->scope = grandparent_scope; |
c906108c SS |
8359 | } |
8360 | ||
72bf9492 DJ |
8361 | parent->scope_set = 1; |
8362 | return parent->scope; | |
8363 | } | |
8364 | ||
8365 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8366 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8367 | |
43816ebc | 8368 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8369 | partial_die_full_name (struct partial_die_info *pdi, |
8370 | struct dwarf2_cu *cu) | |
8371 | { | |
15d034d0 | 8372 | const char *parent_scope; |
72bf9492 | 8373 | |
98bfdba5 PA |
8374 | /* If this is a template instantiation, we can not work out the |
8375 | template arguments from partial DIEs. So, unfortunately, we have | |
8376 | to go through the full DIEs. At least any work we do building | |
8377 | types here will be reused if full symbols are loaded later. */ | |
8378 | if (pdi->has_template_arguments) | |
8379 | { | |
52356b79 | 8380 | pdi->fixup (cu); |
98bfdba5 PA |
8381 | |
8382 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8383 | { | |
8384 | struct die_info *die; | |
8385 | struct attribute attr; | |
8386 | struct dwarf2_cu *ref_cu = cu; | |
8387 | ||
b64f50a1 | 8388 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8389 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8390 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8391 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8392 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8393 | ||
43816ebc | 8394 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8395 | } |
8396 | } | |
8397 | ||
72bf9492 DJ |
8398 | parent_scope = partial_die_parent_scope (pdi, cu); |
8399 | if (parent_scope == NULL) | |
8400 | return NULL; | |
8401 | else | |
43816ebc TT |
8402 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8403 | pdi->name, 0, cu)); | |
c906108c SS |
8404 | } |
8405 | ||
8406 | static void | |
72bf9492 | 8407 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8408 | { |
5e22e966 | 8409 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 8410 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 8411 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8412 | CORE_ADDR addr = 0; |
15d034d0 | 8413 | const char *actual_name = NULL; |
e142c38c DJ |
8414 | CORE_ADDR baseaddr; |
8415 | ||
b3b3bada | 8416 | baseaddr = objfile->text_section_offset (); |
c906108c | 8417 | |
43816ebc TT |
8418 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8419 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8420 | if (built_actual_name != NULL) |
43816ebc | 8421 | actual_name = built_actual_name.get (); |
63d06c5c | 8422 | |
72bf9492 DJ |
8423 | if (actual_name == NULL) |
8424 | actual_name = pdi->name; | |
8425 | ||
76e288d1 TT |
8426 | partial_symbol psymbol; |
8427 | memset (&psymbol, 0, sizeof (psymbol)); | |
8428 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
8429 | psymbol.ginfo.section = -1; | |
8430 | ||
8431 | /* The code below indicates that the psymbol should be installed by | |
8432 | setting this. */ | |
8433 | gdb::optional<psymbol_placement> where; | |
8434 | ||
c906108c SS |
8435 | switch (pdi->tag) |
8436 | { | |
b1dc1806 | 8437 | case DW_TAG_inlined_subroutine: |
c906108c | 8438 | case DW_TAG_subprogram: |
79748972 TT |
8439 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8440 | - baseaddr); | |
0a4b0913 AB |
8441 | if (pdi->is_external |
8442 | || cu->language == language_ada | |
8443 | || (cu->language == language_fortran | |
8444 | && pdi->die_parent != NULL | |
8445 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8446 | { | |
8447 | /* Normally, only "external" DIEs are part of the global scope. | |
8448 | But in Ada and Fortran, we want to be able to access nested | |
8449 | procedures globally. So all Ada and Fortran subprograms are | |
8450 | stored in the global scope. */ | |
76e288d1 | 8451 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8452 | } |
8453 | else | |
76e288d1 TT |
8454 | where = psymbol_placement::STATIC; |
8455 | ||
8456 | psymbol.domain = VAR_DOMAIN; | |
8457 | psymbol.aclass = LOC_BLOCK; | |
8458 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8459 | psymbol.ginfo.value.address = addr; | |
0c1b455e TT |
8460 | |
8461 | if (pdi->main_subprogram && actual_name != NULL) | |
8462 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8463 | break; |
72929c62 | 8464 | case DW_TAG_constant: |
76e288d1 TT |
8465 | psymbol.domain = VAR_DOMAIN; |
8466 | psymbol.aclass = LOC_STATIC; | |
8467 | where = (pdi->is_external | |
8468 | ? psymbol_placement::GLOBAL | |
8469 | : psymbol_placement::STATIC); | |
72929c62 | 8470 | break; |
c906108c | 8471 | case DW_TAG_variable: |
95554aad TT |
8472 | if (pdi->d.locdesc) |
8473 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8474 | |
95554aad | 8475 | if (pdi->d.locdesc |
caac4577 | 8476 | && addr == 0 |
5989a64e | 8477 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8478 | { |
8479 | /* A global or static variable may also have been stripped | |
8480 | out by the linker if unused, in which case its address | |
8481 | will be nullified; do not add such variables into partial | |
8482 | symbol table then. */ | |
8483 | } | |
8484 | else if (pdi->is_external) | |
c906108c SS |
8485 | { |
8486 | /* Global Variable. | |
8487 | Don't enter into the minimal symbol tables as there is | |
8488 | a minimal symbol table entry from the ELF symbols already. | |
8489 | Enter into partial symbol table if it has a location | |
8490 | descriptor or a type. | |
8491 | If the location descriptor is missing, new_symbol will create | |
8492 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8493 | be determined from the minimal symbol table whenever the variable | |
8494 | is referenced. | |
8495 | The address for the partial symbol table entry is not | |
8496 | used by GDB, but it comes in handy for debugging partial symbol | |
8497 | table building. */ | |
8498 | ||
95554aad | 8499 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8500 | { |
8501 | psymbol.domain = VAR_DOMAIN; | |
8502 | psymbol.aclass = LOC_STATIC; | |
8503 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8504 | psymbol.ginfo.value.address = addr; | |
8505 | where = psymbol_placement::GLOBAL; | |
8506 | } | |
c906108c SS |
8507 | } |
8508 | else | |
8509 | { | |
ff908ebf AW |
8510 | int has_loc = pdi->d.locdesc != NULL; |
8511 | ||
8512 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8513 | without location descriptors or constant values). */ | |
8514 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8515 | return; |
ff908ebf | 8516 | |
76e288d1 TT |
8517 | psymbol.domain = VAR_DOMAIN; |
8518 | psymbol.aclass = LOC_STATIC; | |
8519 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8520 | if (has_loc) | |
8521 | psymbol.ginfo.value.address = addr; | |
8522 | where = psymbol_placement::STATIC; | |
c906108c SS |
8523 | } |
8524 | break; | |
8525 | case DW_TAG_typedef: | |
8526 | case DW_TAG_base_type: | |
a02abb62 | 8527 | case DW_TAG_subrange_type: |
76e288d1 TT |
8528 | psymbol.domain = VAR_DOMAIN; |
8529 | psymbol.aclass = LOC_TYPEDEF; | |
8530 | where = psymbol_placement::STATIC; | |
c906108c | 8531 | break; |
74921315 | 8532 | case DW_TAG_imported_declaration: |
72bf9492 | 8533 | case DW_TAG_namespace: |
76e288d1 TT |
8534 | psymbol.domain = VAR_DOMAIN; |
8535 | psymbol.aclass = LOC_TYPEDEF; | |
8536 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8537 | break; |
530e8392 | 8538 | case DW_TAG_module: |
a5fd13a9 BH |
8539 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8540 | available without any name. If so, we skip the module as it | |
8541 | doesn't bring any value. */ | |
8542 | if (actual_name != nullptr) | |
76e288d1 TT |
8543 | { |
8544 | psymbol.domain = MODULE_DOMAIN; | |
8545 | psymbol.aclass = LOC_TYPEDEF; | |
8546 | where = psymbol_placement::GLOBAL; | |
8547 | } | |
530e8392 | 8548 | break; |
c906108c | 8549 | case DW_TAG_class_type: |
680b30c7 | 8550 | case DW_TAG_interface_type: |
c906108c SS |
8551 | case DW_TAG_structure_type: |
8552 | case DW_TAG_union_type: | |
8553 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8554 | /* Skip external references. The DWARF standard says in the section |
8555 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8556 | structure, union or class type is represented by a structure, | |
8557 | union or class entry that does not have a byte size attribute | |
8558 | and that has a DW_AT_declaration attribute." */ | |
8559 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8560 | return; |
fa4028e9 | 8561 | |
63d06c5c DC |
8562 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8563 | static vs. global. */ | |
76e288d1 TT |
8564 | psymbol.domain = STRUCT_DOMAIN; |
8565 | psymbol.aclass = LOC_TYPEDEF; | |
8566 | where = (cu->language == language_cplus | |
8567 | ? psymbol_placement::GLOBAL | |
8568 | : psymbol_placement::STATIC); | |
c906108c SS |
8569 | break; |
8570 | case DW_TAG_enumerator: | |
76e288d1 TT |
8571 | psymbol.domain = VAR_DOMAIN; |
8572 | psymbol.aclass = LOC_CONST; | |
8573 | where = (cu->language == language_cplus | |
8574 | ? psymbol_placement::GLOBAL | |
8575 | : psymbol_placement::STATIC); | |
c906108c SS |
8576 | break; |
8577 | default: | |
8578 | break; | |
8579 | } | |
76e288d1 TT |
8580 | |
8581 | if (where.has_value ()) | |
8582 | { | |
f049a313 TT |
8583 | if (built_actual_name != nullptr) |
8584 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8585 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8586 | psymbol.ginfo.set_linkage_name (actual_name); | |
8587 | else | |
8588 | { | |
8589 | psymbol.ginfo.set_demangled_name (actual_name, | |
8590 | &objfile->objfile_obstack); | |
8591 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8592 | } | |
76e288d1 TT |
8593 | add_psymbol_to_list (psymbol, *where, objfile); |
8594 | } | |
c906108c SS |
8595 | } |
8596 | ||
5c4e30ca DC |
8597 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8598 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8599 | the name of the enclosing namespace. */ | |
91c24f0a | 8600 | |
72bf9492 DJ |
8601 | static void |
8602 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8603 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8604 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8605 | { |
72bf9492 | 8606 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8607 | |
72bf9492 | 8608 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8609 | |
8610 | /* Now scan partial symbols in that namespace. */ | |
8611 | ||
91c24f0a | 8612 | if (pdi->has_children) |
cdc07690 | 8613 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8614 | } |
8615 | ||
5d7cb8df JK |
8616 | /* Read a partial die corresponding to a Fortran module. */ |
8617 | ||
8618 | static void | |
8619 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8620 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8621 | { |
530e8392 KB |
8622 | /* Add a symbol for the namespace. */ |
8623 | ||
8624 | add_partial_symbol (pdi, cu); | |
8625 | ||
f55ee35c | 8626 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8627 | |
8628 | if (pdi->has_children) | |
cdc07690 | 8629 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8630 | } |
8631 | ||
b1dc1806 XR |
8632 | /* Read a partial die corresponding to a subprogram or an inlined |
8633 | subprogram and create a partial symbol for that subprogram. | |
8634 | When the CU language allows it, this routine also defines a partial | |
8635 | symbol for each nested subprogram that this subprogram contains. | |
8636 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8637 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8638 | |
cdc07690 YQ |
8639 | PDI may also be a lexical block, in which case we simply search |
8640 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8641 | Again, this is only performed when the CU language allows this |
8642 | type of definitions. */ | |
8643 | ||
8644 | static void | |
8645 | add_partial_subprogram (struct partial_die_info *pdi, | |
8646 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8647 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8648 | { |
b1dc1806 | 8649 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8650 | { |
8651 | if (pdi->has_pc_info) | |
8652 | { | |
8653 | if (pdi->lowpc < *lowpc) | |
8654 | *lowpc = pdi->lowpc; | |
8655 | if (pdi->highpc > *highpc) | |
8656 | *highpc = pdi->highpc; | |
cdc07690 | 8657 | if (set_addrmap) |
5734ee8b | 8658 | { |
5e22e966 | 8659 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8660 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8661 | CORE_ADDR baseaddr; |
b926417a TT |
8662 | CORE_ADDR this_highpc; |
8663 | CORE_ADDR this_lowpc; | |
5734ee8b | 8664 | |
b3b3bada | 8665 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8666 | this_lowpc |
8667 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8668 | pdi->lowpc + baseaddr) | |
8669 | - baseaddr); | |
8670 | this_highpc | |
8671 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8672 | pdi->highpc + baseaddr) | |
8673 | - baseaddr); | |
d320c2b5 | 8674 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8675 | this_lowpc, this_highpc - 1, |
9291a0cd | 8676 | cu->per_cu->v.psymtab); |
5734ee8b | 8677 | } |
481860b3 GB |
8678 | } |
8679 | ||
8680 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8681 | { | |
bc30ff58 | 8682 | if (!pdi->is_declaration) |
e8d05480 JB |
8683 | /* Ignore subprogram DIEs that do not have a name, they are |
8684 | illegal. Do not emit a complaint at this point, we will | |
8685 | do so when we convert this psymtab into a symtab. */ | |
8686 | if (pdi->name) | |
8687 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
8688 | } |
8689 | } | |
6e70227d | 8690 | |
bc30ff58 JB |
8691 | if (! pdi->has_children) |
8692 | return; | |
8693 | ||
0a4b0913 | 8694 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8695 | { |
8696 | pdi = pdi->die_child; | |
8697 | while (pdi != NULL) | |
8698 | { | |
52356b79 | 8699 | pdi->fixup (cu); |
bc30ff58 | 8700 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8701 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8702 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8703 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8704 | pdi = pdi->die_sibling; |
8705 | } | |
8706 | } | |
8707 | } | |
8708 | ||
91c24f0a DC |
8709 | /* Read a partial die corresponding to an enumeration type. */ |
8710 | ||
72bf9492 DJ |
8711 | static void |
8712 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8713 | struct dwarf2_cu *cu) | |
91c24f0a | 8714 | { |
72bf9492 | 8715 | struct partial_die_info *pdi; |
91c24f0a DC |
8716 | |
8717 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
8718 | add_partial_symbol (enum_pdi, cu); |
8719 | ||
8720 | pdi = enum_pdi->die_child; | |
8721 | while (pdi) | |
91c24f0a | 8722 | { |
72bf9492 | 8723 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 8724 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8725 | else |
72bf9492 DJ |
8726 | add_partial_symbol (pdi, cu); |
8727 | pdi = pdi->die_sibling; | |
91c24f0a | 8728 | } |
91c24f0a DC |
8729 | } |
8730 | ||
6caca83c CC |
8731 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8732 | ||
8733 | static unsigned int | |
d521ce57 | 8734 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8735 | { |
8736 | unsigned int bytes_read; | |
8737 | ||
8738 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8739 | } | |
8740 | ||
685af9cd TT |
8741 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8742 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8743 | ||
4bb7a0a7 DJ |
8744 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8745 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8746 | the initial number. */ | |
8747 | ||
8748 | static struct abbrev_info * | |
685af9cd TT |
8749 | peek_die_abbrev (const die_reader_specs &reader, |
8750 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8751 | { |
685af9cd | 8752 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8753 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8754 | unsigned int abbrev_number |
8755 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8756 | |
8757 | if (abbrev_number == 0) | |
8758 | return NULL; | |
8759 | ||
685af9cd | 8760 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8761 | if (!abbrev) |
8762 | { | |
422b9917 | 8763 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8764 | " at offset %s [in module %s]"), |
422b9917 | 8765 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8766 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8767 | } |
8768 | ||
8769 | return abbrev; | |
8770 | } | |
8771 | ||
93311388 DE |
8772 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8773 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8774 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8775 | ||
d521ce57 TT |
8776 | static const gdb_byte * |
8777 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8778 | { |
4bb7a0a7 DJ |
8779 | while (1) |
8780 | { | |
685af9cd TT |
8781 | unsigned int bytes_read; |
8782 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8783 | ||
4bb7a0a7 DJ |
8784 | if (abbrev == NULL) |
8785 | return info_ptr + bytes_read; | |
8786 | else | |
dee91e82 | 8787 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8788 | } |
8789 | } | |
8790 | ||
93311388 DE |
8791 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8792 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8793 | abbrev corresponding to that skipped uleb128 should be passed in |
8794 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8795 | children. */ | |
8796 | ||
d521ce57 TT |
8797 | static const gdb_byte * |
8798 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8799 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8800 | { |
8801 | unsigned int bytes_read; | |
8802 | struct attribute attr; | |
dee91e82 DE |
8803 | bfd *abfd = reader->abfd; |
8804 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8805 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8806 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8807 | unsigned int form, i; |
8808 | ||
8809 | for (i = 0; i < abbrev->num_attrs; i++) | |
8810 | { | |
8811 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8812 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8813 | { | |
18a8505e AT |
8814 | bool ignored; |
8815 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8816 | &ignored); | |
4bb7a0a7 | 8817 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8818 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8819 | else |
b9502d3f | 8820 | { |
0826b30a | 8821 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8822 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8823 | |
8824 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8825 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8826 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8827 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8828 | else |
8829 | return sibling_ptr; | |
8830 | } | |
4bb7a0a7 DJ |
8831 | } |
8832 | ||
8833 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8834 | form = abbrev->attrs[i].form; | |
8835 | skip_attribute: | |
8836 | switch (form) | |
8837 | { | |
4bb7a0a7 | 8838 | case DW_FORM_ref_addr: |
ae411497 TT |
8839 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8840 | and later it is offset sized. */ | |
8841 | if (cu->header.version == 2) | |
8842 | info_ptr += cu->header.addr_size; | |
8843 | else | |
8844 | info_ptr += cu->header.offset_size; | |
8845 | break; | |
36586728 TT |
8846 | case DW_FORM_GNU_ref_alt: |
8847 | info_ptr += cu->header.offset_size; | |
8848 | break; | |
ae411497 | 8849 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8850 | info_ptr += cu->header.addr_size; |
8851 | break; | |
8852 | case DW_FORM_data1: | |
8853 | case DW_FORM_ref1: | |
8854 | case DW_FORM_flag: | |
8fe0f950 | 8855 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8856 | info_ptr += 1; |
8857 | break; | |
2dc7f7b3 | 8858 | case DW_FORM_flag_present: |
43988095 | 8859 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8860 | break; |
4bb7a0a7 DJ |
8861 | case DW_FORM_data2: |
8862 | case DW_FORM_ref2: | |
8fe0f950 | 8863 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8864 | info_ptr += 2; |
8865 | break; | |
8fe0f950 AT |
8866 | case DW_FORM_strx3: |
8867 | info_ptr += 3; | |
8868 | break; | |
4bb7a0a7 DJ |
8869 | case DW_FORM_data4: |
8870 | case DW_FORM_ref4: | |
8fe0f950 | 8871 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8872 | info_ptr += 4; |
8873 | break; | |
8874 | case DW_FORM_data8: | |
8875 | case DW_FORM_ref8: | |
55f1336d | 8876 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8877 | info_ptr += 8; |
8878 | break; | |
0224619f JK |
8879 | case DW_FORM_data16: |
8880 | info_ptr += 16; | |
8881 | break; | |
4bb7a0a7 | 8882 | case DW_FORM_string: |
9b1c24c8 | 8883 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8884 | info_ptr += bytes_read; |
8885 | break; | |
2dc7f7b3 | 8886 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8887 | case DW_FORM_strp: |
36586728 | 8888 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8889 | info_ptr += cu->header.offset_size; |
8890 | break; | |
2dc7f7b3 | 8891 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8892 | case DW_FORM_block: |
8893 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8894 | info_ptr += bytes_read; | |
8895 | break; | |
8896 | case DW_FORM_block1: | |
8897 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8898 | break; | |
8899 | case DW_FORM_block2: | |
8900 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8901 | break; | |
8902 | case DW_FORM_block4: | |
8903 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8904 | break; | |
336d760d | 8905 | case DW_FORM_addrx: |
cf532bd1 | 8906 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8907 | case DW_FORM_sdata: |
8908 | case DW_FORM_udata: | |
8909 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8910 | case DW_FORM_GNU_addr_index: |
8911 | case DW_FORM_GNU_str_index: | |
18a8505e | 8912 | case DW_FORM_rnglistx: |
41144253 | 8913 | case DW_FORM_loclistx: |
d521ce57 | 8914 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8915 | break; |
8916 | case DW_FORM_indirect: | |
8917 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8918 | info_ptr += bytes_read; | |
8919 | /* We need to continue parsing from here, so just go back to | |
8920 | the top. */ | |
8921 | goto skip_attribute; | |
8922 | ||
8923 | default: | |
3e43a32a MS |
8924 | error (_("Dwarf Error: Cannot handle %s " |
8925 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8926 | dwarf_form_name (form), |
8927 | bfd_get_filename (abfd)); | |
8928 | } | |
8929 | } | |
8930 | ||
8931 | if (abbrev->has_children) | |
dee91e82 | 8932 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8933 | else |
8934 | return info_ptr; | |
8935 | } | |
8936 | ||
93311388 | 8937 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8938 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8939 | |
d521ce57 | 8940 | static const gdb_byte * |
dee91e82 DE |
8941 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8942 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8943 | const gdb_byte *info_ptr) |
91c24f0a DC |
8944 | { |
8945 | /* Do we know the sibling already? */ | |
72bf9492 | 8946 | |
91c24f0a DC |
8947 | if (orig_pdi->sibling) |
8948 | return orig_pdi->sibling; | |
8949 | ||
8950 | /* Are there any children to deal with? */ | |
8951 | ||
8952 | if (!orig_pdi->has_children) | |
8953 | return info_ptr; | |
8954 | ||
4bb7a0a7 | 8955 | /* Skip the children the long way. */ |
91c24f0a | 8956 | |
dee91e82 | 8957 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8958 | } |
8959 | ||
257e7a09 | 8960 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8961 | not NULL. */ |
c906108c | 8962 | |
891813be TT |
8963 | void |
8964 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8965 | { |
ed2dc618 SM |
8966 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8967 | = get_dwarf2_per_objfile (objfile); | |
8968 | ||
af758d11 SM |
8969 | gdb_assert (!dwarf2_per_objfile->symtab_set_p (per_cu_data)); |
8970 | ||
077cbab2 TT |
8971 | /* If this psymtab is constructed from a debug-only objfile, the |
8972 | has_section_at_zero flag will not necessarily be correct. We | |
8973 | can get the correct value for this flag by looking at the data | |
8974 | associated with the (presumably stripped) associated objfile. */ | |
8975 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8976 | { |
077cbab2 TT |
8977 | struct dwarf2_per_objfile *dpo_backlink |
8978 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 8979 | |
5989a64e SM |
8980 | dwarf2_per_objfile->per_bfd->has_section_at_zero |
8981 | = dpo_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 8982 | } |
98bfdba5 | 8983 | |
8566b89b | 8984 | expand_psymtab (objfile); |
95554aad | 8985 | |
ed2dc618 | 8986 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 8987 | } |
9cdd5dbd DE |
8988 | \f |
8989 | /* Reading in full CUs. */ | |
c906108c | 8990 | |
10b3939b DJ |
8991 | /* Add PER_CU to the queue. */ |
8992 | ||
8993 | static void | |
120ce1b5 SM |
8994 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
8995 | dwarf2_per_objfile *per_objfile, | |
95554aad | 8996 | enum language pretend_language) |
10b3939b | 8997 | { |
10b3939b | 8998 | per_cu->queued = 1; |
120ce1b5 | 8999 | per_cu->per_bfd->queue.emplace (per_cu, per_objfile, pretend_language); |
10b3939b DJ |
9000 | } |
9001 | ||
89e63ee4 DE |
9002 | /* If PER_CU is not yet queued, add it to the queue. |
9003 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9004 | dependency. | |
0907af0c | 9005 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9006 | meaning either PER_CU is already queued or it is already loaded. |
9007 | ||
9008 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9009 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9010 | |
9011 | static int | |
89e63ee4 | 9012 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
9013 | dwarf2_per_cu_data *per_cu, |
9014 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
9015 | enum language pretend_language) |
9016 | { | |
9017 | /* We may arrive here during partial symbol reading, if we need full | |
9018 | DIEs to process an unusual case (e.g. template arguments). Do | |
9019 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 9020 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 9021 | { |
7188ed02 SM |
9022 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9023 | ||
9024 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
9025 | return 1; |
9026 | return 0; | |
9027 | } | |
9028 | ||
9029 | /* Mark the dependence relation so that we don't flush PER_CU | |
9030 | too early. */ | |
89e63ee4 DE |
9031 | if (dependent_cu != NULL) |
9032 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9033 | |
9034 | /* If it's already on the queue, we have nothing to do. */ | |
9035 | if (per_cu->queued) | |
9036 | return 0; | |
9037 | ||
9038 | /* If the compilation unit is already loaded, just mark it as | |
9039 | used. */ | |
7188ed02 SM |
9040 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9041 | if (cu != nullptr) | |
0907af0c | 9042 | { |
7188ed02 | 9043 | cu->last_used = 0; |
0907af0c DE |
9044 | return 0; |
9045 | } | |
9046 | ||
9047 | /* Add it to the queue. */ | |
120ce1b5 | 9048 | queue_comp_unit (per_cu, per_objfile, pretend_language); |
0907af0c DE |
9049 | |
9050 | return 1; | |
9051 | } | |
9052 | ||
10b3939b DJ |
9053 | /* Process the queue. */ |
9054 | ||
9055 | static void | |
ed2dc618 | 9056 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b | 9057 | { |
b4f54984 | 9058 | if (dwarf_read_debug) |
45cfd468 DE |
9059 | { |
9060 | fprintf_unfiltered (gdb_stdlog, | |
9061 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9062 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9063 | } |
9064 | ||
03dd20cc DJ |
9065 | /* The queue starts out with one item, but following a DIE reference |
9066 | may load a new CU, adding it to the end of the queue. */ | |
5989a64e | 9067 | while (!dwarf2_per_objfile->per_bfd->queue.empty ()) |
10b3939b | 9068 | { |
5989a64e | 9069 | dwarf2_queue_item &item = dwarf2_per_objfile->per_bfd->queue.front (); |
7188ed02 | 9070 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 9071 | |
7188ed02 | 9072 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 9073 | { |
7188ed02 | 9074 | dwarf2_cu *cu = dwarf2_per_objfile->get_cu (per_cu); |
f4dc4d17 | 9075 | |
7188ed02 SM |
9076 | /* Skip dummy CUs. */ |
9077 | if (cu != nullptr) | |
73be47f5 | 9078 | { |
7188ed02 SM |
9079 | unsigned int debug_print_threshold; |
9080 | char buf[100]; | |
9081 | ||
9082 | if (per_cu->is_debug_types) | |
9083 | { | |
9084 | struct signatured_type *sig_type = | |
9085 | (struct signatured_type *) per_cu; | |
9086 | ||
9087 | sprintf (buf, "TU %s at offset %s", | |
9088 | hex_string (sig_type->signature), | |
9089 | sect_offset_str (per_cu->sect_off)); | |
9090 | /* There can be 100s of TUs. | |
9091 | Only print them in verbose mode. */ | |
9092 | debug_print_threshold = 2; | |
9093 | } | |
9094 | else | |
9095 | { | |
9096 | sprintf (buf, "CU at offset %s", | |
9097 | sect_offset_str (per_cu->sect_off)); | |
9098 | debug_print_threshold = 1; | |
9099 | } | |
247f5c4f | 9100 | |
7188ed02 SM |
9101 | if (dwarf_read_debug >= debug_print_threshold) |
9102 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); | |
f4dc4d17 | 9103 | |
7188ed02 SM |
9104 | if (per_cu->is_debug_types) |
9105 | process_full_type_unit (cu, item.pretend_language); | |
9106 | else | |
9107 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9108 | |
7188ed02 SM |
9109 | if (dwarf_read_debug >= debug_print_threshold) |
9110 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); | |
9111 | } | |
f4dc4d17 | 9112 | } |
10b3939b | 9113 | |
7188ed02 | 9114 | per_cu->queued = 0; |
5989a64e | 9115 | dwarf2_per_objfile->per_bfd->queue.pop (); |
10b3939b DJ |
9116 | } |
9117 | ||
b4f54984 | 9118 | if (dwarf_read_debug) |
45cfd468 DE |
9119 | { |
9120 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9121 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9122 | } |
10b3939b DJ |
9123 | } |
9124 | ||
10b3939b DJ |
9125 | /* Read in full symbols for PST, and anything it depends on. */ |
9126 | ||
8566b89b TT |
9127 | void |
9128 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9129 | { |
af758d11 | 9130 | gdb_assert (!readin_p (objfile)); |
95554aad | 9131 | |
17ee85fc TT |
9132 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9133 | free_cached_comp_units freer (per_objfile); | |
48993951 | 9134 | expand_dependencies (objfile); |
aaa75496 | 9135 | |
97a1449a | 9136 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 9137 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9138 | } |
9139 | ||
af758d11 SM |
9140 | /* See psympriv.h. */ |
9141 | ||
9142 | bool | |
9143 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9144 | { | |
9145 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9146 | return per_objfile->symtab_set_p (per_cu_data); | |
9147 | } | |
9148 | ||
9149 | /* See psympriv.h. */ | |
9150 | ||
9151 | compunit_symtab * | |
9152 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9153 | { | |
9154 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9155 | return per_objfile->get_symtab (per_cu_data); | |
9156 | } | |
9157 | ||
dee91e82 DE |
9158 | /* Trivial hash function for die_info: the hash value of a DIE |
9159 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9160 | |
dee91e82 DE |
9161 | static hashval_t |
9162 | die_hash (const void *item) | |
10b3939b | 9163 | { |
9a3c8263 | 9164 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9165 | |
9c541725 | 9166 | return to_underlying (die->sect_off); |
dee91e82 | 9167 | } |
63d06c5c | 9168 | |
dee91e82 DE |
9169 | /* Trivial comparison function for die_info structures: two DIEs |
9170 | are equal if they have the same offset. */ | |
98bfdba5 | 9171 | |
dee91e82 DE |
9172 | static int |
9173 | die_eq (const void *item_lhs, const void *item_rhs) | |
9174 | { | |
9a3c8263 SM |
9175 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9176 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9177 | |
9c541725 | 9178 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9179 | } |
c906108c | 9180 | |
c0ab21c2 | 9181 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9182 | |
dee91e82 | 9183 | static void |
ab432490 SM |
9184 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9185 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 TT |
9186 | bool skip_partial, |
9187 | enum language pretend_language) | |
dee91e82 | 9188 | { |
c0ab21c2 TT |
9189 | gdb_assert (! this_cu->is_debug_types); |
9190 | ||
7188ed02 SM |
9191 | dwarf2_cu *existing_cu = per_objfile->get_cu (this_cu); |
9192 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); | |
c0ab21c2 TT |
9193 | if (reader.dummy_p) |
9194 | return; | |
9195 | ||
9196 | struct dwarf2_cu *cu = reader.cu; | |
9197 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9198 | |
dee91e82 DE |
9199 | gdb_assert (cu->die_hash == NULL); |
9200 | cu->die_hash = | |
9201 | htab_create_alloc_ex (cu->header.length / 12, | |
9202 | die_hash, | |
9203 | die_eq, | |
9204 | NULL, | |
9205 | &cu->comp_unit_obstack, | |
9206 | hashtab_obstack_allocate, | |
9207 | dummy_obstack_deallocate); | |
e142c38c | 9208 | |
3e225074 | 9209 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9210 | reader.comp_unit_die->child |
9211 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9212 | &info_ptr, reader.comp_unit_die); | |
9213 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9214 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9215 | |
9216 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9217 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9218 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9219 | or we won't be able to build types correctly. |
9220 | Similarly, if we do not read the producer, we can not apply | |
9221 | producer-specific interpretation. */ | |
c0ab21c2 | 9222 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9223 | |
9224 | reader.keep (); | |
10b3939b DJ |
9225 | } |
9226 | ||
3da10d80 KS |
9227 | /* Add a DIE to the delayed physname list. */ |
9228 | ||
9229 | static void | |
9230 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9231 | const char *name, struct die_info *die, | |
9232 | struct dwarf2_cu *cu) | |
9233 | { | |
9234 | struct delayed_method_info mi; | |
9235 | mi.type = type; | |
9236 | mi.fnfield_index = fnfield_index; | |
9237 | mi.index = index; | |
9238 | mi.name = name; | |
9239 | mi.die = die; | |
c89b44cd | 9240 | cu->method_list.push_back (mi); |
3da10d80 KS |
9241 | } |
9242 | ||
3693fdb3 PA |
9243 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9244 | "const" / "volatile". If so, decrements LEN by the length of the | |
9245 | modifier and return true. Otherwise return false. */ | |
9246 | ||
9247 | template<size_t N> | |
9248 | static bool | |
9249 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9250 | { | |
9251 | size_t mod_len = sizeof (mod) - 1; | |
9252 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9253 | { | |
9254 | len -= mod_len; | |
9255 | return true; | |
9256 | } | |
9257 | return false; | |
9258 | } | |
9259 | ||
3da10d80 KS |
9260 | /* Compute the physnames of any methods on the CU's method list. |
9261 | ||
9262 | The computation of method physnames is delayed in order to avoid the | |
9263 | (bad) condition that one of the method's formal parameters is of an as yet | |
9264 | incomplete type. */ | |
9265 | ||
9266 | static void | |
9267 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9268 | { | |
3693fdb3 | 9269 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9270 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9271 | return; |
9272 | gdb_assert (cu->language == language_cplus); | |
9273 | ||
52941706 | 9274 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9275 | { |
1d06ead6 | 9276 | const char *physname; |
3da10d80 | 9277 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9278 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9279 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9280 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9281 | = physname ? physname : ""; |
3693fdb3 PA |
9282 | |
9283 | /* Since there's no tag to indicate whether a method is a | |
9284 | const/volatile overload, extract that information out of the | |
9285 | demangled name. */ | |
9286 | if (physname != NULL) | |
9287 | { | |
9288 | size_t len = strlen (physname); | |
9289 | ||
9290 | while (1) | |
9291 | { | |
9292 | if (physname[len] == ')') /* shortcut */ | |
9293 | break; | |
9294 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9295 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9296 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9297 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9298 | else |
9299 | break; | |
9300 | } | |
9301 | } | |
3da10d80 | 9302 | } |
c89b44cd TT |
9303 | |
9304 | /* The list is no longer needed. */ | |
9305 | cu->method_list.clear (); | |
3da10d80 KS |
9306 | } |
9307 | ||
a766d390 DE |
9308 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9309 | and it's not clear if/how imported objects will appear. | |
9310 | To keep Go support simple until that's worked out, | |
9311 | go back through what we've read and create something usable. | |
9312 | We could do this while processing each DIE, and feels kinda cleaner, | |
9313 | but that way is more invasive. | |
9314 | This is to, for example, allow the user to type "p var" or "b main" | |
9315 | without having to specify the package name, and allow lookups | |
9316 | of module.object to work in contexts that use the expression | |
9317 | parser. */ | |
9318 | ||
9319 | static void | |
9320 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9321 | { | |
421d1616 | 9322 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9323 | struct pending *list; |
9324 | int i; | |
9325 | ||
c24bdb02 | 9326 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9327 | list != NULL; |
9328 | list = list->next) | |
a766d390 DE |
9329 | { |
9330 | for (i = 0; i < list->nsyms; ++i) | |
9331 | { | |
9332 | struct symbol *sym = list->symbol[i]; | |
9333 | ||
c1b5c1eb | 9334 | if (sym->language () == language_go |
a766d390 DE |
9335 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9336 | { | |
421d1616 TT |
9337 | gdb::unique_xmalloc_ptr<char> this_package_name |
9338 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9339 | |
9340 | if (this_package_name == NULL) | |
9341 | continue; | |
9342 | if (package_name == NULL) | |
421d1616 | 9343 | package_name = std::move (this_package_name); |
a766d390 DE |
9344 | else |
9345 | { | |
5e22e966 | 9346 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9347 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9348 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9349 | (symbol_symtab (sym) != NULL |
9350 | ? symtab_to_filename_for_display | |
9351 | (symbol_symtab (sym)) | |
e3b94546 | 9352 | : objfile_name (objfile)), |
421d1616 | 9353 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9354 | } |
9355 | } | |
9356 | } | |
9357 | } | |
9358 | ||
9359 | if (package_name != NULL) | |
9360 | { | |
5e22e966 | 9361 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9362 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9363 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9364 | saved_package_name); | |
a766d390 DE |
9365 | struct symbol *sym; |
9366 | ||
8c14c3a3 | 9367 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9368 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9369 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9370 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9371 | e.g., "main" finds the "main" module and not C's main(). */ | |
9372 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9373 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9374 | SYMBOL_TYPE (sym) = type; |
9375 | ||
c24bdb02 | 9376 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9377 | } |
9378 | } | |
9379 | ||
c9317f21 TT |
9380 | /* Allocate a fully-qualified name consisting of the two parts on the |
9381 | obstack. */ | |
9382 | ||
9383 | static const char * | |
9384 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9385 | { | |
9386 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9387 | } | |
9388 | ||
9c6a1327 TT |
9389 | /* A helper that allocates a variant part to attach to a Rust enum |
9390 | type. OBSTACK is where the results should be allocated. TYPE is | |
9391 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
9392 | discriminant. It must be the index of one of the fields of TYPE. | |
9393 | DEFAULT_INDEX is the index of the default field; or -1 if there is | |
9394 | no default. RANGES is indexed by "effective" field number (the | |
9395 | field index, but omitting the discriminant and default fields) and | |
9396 | must hold the discriminant values used by the variants. Note that | |
9397 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9398 | already allocated on it, or static. */ | |
c9317f21 | 9399 | |
9c6a1327 TT |
9400 | static void |
9401 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9402 | int discriminant_index, int default_index, | |
9403 | gdb::array_view<discriminant_range> ranges) | |
9404 | { | |
9405 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. Those | |
9406 | must be handled by the caller. */ | |
9407 | gdb_assert (discriminant_index >= 0 | |
1f704f76 | 9408 | && discriminant_index < type->num_fields ()); |
c9317f21 | 9409 | gdb_assert (default_index == -1 |
1f704f76 | 9410 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9411 | |
9c6a1327 | 9412 | /* We have one variant for each non-discriminant field. */ |
1f704f76 | 9413 | int n_variants = type->num_fields () - 1; |
c9317f21 | 9414 | |
9c6a1327 TT |
9415 | variant *variants = new (obstack) variant[n_variants]; |
9416 | int var_idx = 0; | |
9417 | int range_idx = 0; | |
1f704f76 | 9418 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9419 | { |
9420 | if (i == discriminant_index) | |
9421 | continue; | |
c9317f21 | 9422 | |
9c6a1327 TT |
9423 | variants[var_idx].first_field = i; |
9424 | variants[var_idx].last_field = i + 1; | |
9425 | ||
9426 | /* The default field does not need a range, but other fields do. | |
9427 | We skipped the discriminant above. */ | |
9428 | if (i != default_index) | |
9429 | { | |
9430 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9431 | ++range_idx; | |
9432 | } | |
c9317f21 | 9433 | |
9c6a1327 TT |
9434 | ++var_idx; |
9435 | } | |
9436 | ||
9437 | gdb_assert (range_idx == ranges.size ()); | |
9438 | gdb_assert (var_idx == n_variants); | |
9439 | ||
9440 | variant_part *part = new (obstack) variant_part; | |
9441 | part->discriminant_index = discriminant_index; | |
9442 | part->is_unsigned = TYPE_UNSIGNED (TYPE_FIELD_TYPE (type, | |
9443 | discriminant_index)); | |
9444 | part->variants = gdb::array_view<variant> (variants, n_variants); | |
9445 | ||
9446 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9447 | gdb::array_view<variant_part> *prop_value | |
9448 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9449 | |
9c6a1327 TT |
9450 | struct dynamic_prop prop; |
9451 | prop.kind = PROP_VARIANT_PARTS; | |
9452 | prop.data.variant_parts = prop_value; | |
9453 | ||
5c54719c | 9454 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9455 | } |
9456 | ||
9457 | /* Some versions of rustc emitted enums in an unusual way. | |
9458 | ||
9459 | Ordinary enums were emitted as unions. The first element of each | |
9460 | structure in the union was named "RUST$ENUM$DISR". This element | |
9461 | held the discriminant. | |
9462 | ||
9463 | These versions of Rust also implemented the "non-zero" | |
9464 | optimization. When the enum had two values, and one is empty and | |
9465 | the other holds a pointer that cannot be zero, the pointer is used | |
9466 | as the discriminant, with a zero value meaning the empty variant. | |
9467 | Here, the union's first member is of the form | |
9468 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9469 | where the fieldnos are the indices of the fields that should be | |
9470 | traversed in order to find the field (which may be several fields deep) | |
9471 | and the variantname is the name of the variant of the case when the | |
9472 | field is zero. | |
9473 | ||
9474 | This function recognizes whether TYPE is of one of these forms, | |
9475 | and, if so, smashes it to be a variant type. */ | |
9476 | ||
9477 | static void | |
9478 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9479 | { | |
78134374 | 9480 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9481 | |
9482 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9483 | if (type->num_fields () == 0) |
c9317f21 TT |
9484 | return; |
9485 | ||
9486 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9487 | if (type->num_fields () == 1 |
c9317f21 TT |
9488 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9489 | { | |
9490 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9491 | ||
9492 | /* Decode the field name to find the offset of the | |
9493 | discriminant. */ | |
9494 | ULONGEST bit_offset = 0; | |
9495 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9496 | while (name[0] >= '0' && name[0] <= '9') | |
9497 | { | |
9498 | char *tail; | |
9499 | unsigned long index = strtoul (name, &tail, 10); | |
9500 | name = tail; | |
9501 | if (*name != '$' | |
1f704f76 | 9502 | || index >= field_type->num_fields () |
c9317f21 TT |
9503 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9504 | != FIELD_LOC_KIND_BITPOS)) | |
9505 | { | |
b98664d3 | 9506 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9507 | "[in module %s]"), |
9508 | TYPE_FIELD_NAME (type, 0), | |
9509 | objfile_name (objfile)); | |
9510 | return; | |
9511 | } | |
9512 | ++name; | |
9513 | ||
9514 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9515 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9516 | } | |
9517 | ||
9c6a1327 TT |
9518 | /* Smash this type to be a structure type. We have to do this |
9519 | because the type has already been recorded. */ | |
67607e24 | 9520 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9521 | type->set_num_fields (3); |
9c6a1327 | 9522 | /* Save the field we care about. */ |
ceacbf6e | 9523 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9524 | type->set_fields |
9525 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9526 | |
9c6a1327 TT |
9527 | /* Put the discriminant at index 0. */ |
9528 | TYPE_FIELD_TYPE (type, 0) = field_type; | |
9529 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; | |
9530 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9531 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9532 | |
9533 | /* The order of fields doesn't really matter, so put the real | |
9534 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9535 | type->field (1) = saved_field; |
9c6a1327 | 9536 | TYPE_FIELD_NAME (type, 1) |
7d93a1e0 | 9537 | = rust_last_path_segment (TYPE_FIELD_TYPE (type, 1)->name ()); |
d0e39ea2 | 9538 | TYPE_FIELD_TYPE (type, 1)->set_name |
7d93a1e0 | 9539 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9540 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9541 | |
9542 | const char *dataless_name | |
7d93a1e0 | 9543 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9544 | name); |
9545 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9546 | dataless_name); | |
9c6a1327 | 9547 | TYPE_FIELD_TYPE (type, 2) = dataless_type; |
c9317f21 TT |
9548 | /* NAME points into the original discriminant name, which |
9549 | already has the correct lifetime. */ | |
9c6a1327 | 9550 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9551 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9552 | |
9c6a1327 TT |
9553 | /* Indicate that this is a variant type. */ |
9554 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9555 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9556 | } |
77c2dba3 TT |
9557 | /* A union with a single anonymous field is probably an old-style |
9558 | univariant enum. */ | |
1f704f76 | 9559 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9560 | { |
c9317f21 TT |
9561 | /* Smash this type to be a structure type. We have to do this |
9562 | because the type has already been recorded. */ | |
67607e24 | 9563 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9564 | |
9c6a1327 | 9565 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); |
c9317f21 | 9566 | const char *variant_name |
7d93a1e0 | 9567 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9568 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9569 | field_type->set_name |
9570 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9571 | type->name (), variant_name)); |
c9317f21 TT |
9572 | } |
9573 | else | |
9574 | { | |
9575 | struct type *disr_type = nullptr; | |
1f704f76 | 9576 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 TT |
9577 | { |
9578 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9579 | ||
78134374 | 9580 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9581 | { |
9582 | /* All fields of a true enum will be structs. */ | |
9583 | return; | |
9584 | } | |
1f704f76 | 9585 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9586 | { |
9587 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9588 | disr_type = nullptr; |
c9317f21 TT |
9589 | } |
9590 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9591 | "RUST$ENUM$DISR") != 0) | |
9592 | { | |
9593 | /* Not a Rust enum. */ | |
9594 | return; | |
9595 | } | |
9596 | else | |
9597 | { | |
9598 | /* Found one. */ | |
9599 | break; | |
9600 | } | |
9601 | } | |
9602 | ||
9603 | /* If we got here without a discriminant, then it's probably | |
9604 | just a union. */ | |
9605 | if (disr_type == nullptr) | |
9606 | return; | |
9607 | ||
9608 | /* Smash this type to be a structure type. We have to do this | |
9609 | because the type has already been recorded. */ | |
67607e24 | 9610 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9611 | |
9c6a1327 | 9612 | /* Make space for the discriminant field. */ |
ceacbf6e | 9613 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9614 | field *new_fields |
1f704f76 | 9615 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9616 | * sizeof (struct field))); |
80fc5e77 | 9617 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9618 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9619 | type->set_fields (new_fields); |
1f704f76 | 9620 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9621 | |
9622 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9623 | type->field (0) = *disr_field; |
9c6a1327 TT |
9624 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9625 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9626 | |
9627 | /* We need a way to find the correct discriminant given a | |
9628 | variant name. For convenience we build a map here. */ | |
9629 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
9630 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
1f704f76 | 9631 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9632 | { |
9633 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9634 | { | |
9635 | const char *name | |
9636 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9637 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9638 | } | |
9639 | } | |
9640 | ||
1f704f76 | 9641 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9642 | /* We don't need a range entry for the discriminant, but we do |
9643 | need one for every other field, as there is no default | |
9644 | variant. */ | |
9645 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9646 | discriminant_range, | |
9647 | n_fields - 1); | |
c9317f21 TT |
9648 | /* Skip the discriminant here. */ |
9649 | for (int i = 1; i < n_fields; ++i) | |
9650 | { | |
9651 | /* Find the final word in the name of this variant's type. | |
9652 | That name can be used to look up the correct | |
9653 | discriminant. */ | |
9654 | const char *variant_name | |
7d93a1e0 | 9655 | = rust_last_path_segment (TYPE_FIELD_TYPE (type, i)->name ()); |
c9317f21 TT |
9656 | |
9657 | auto iter = discriminant_map.find (variant_name); | |
9658 | if (iter != discriminant_map.end ()) | |
9c6a1327 TT |
9659 | { |
9660 | ranges[i].low = iter->second; | |
9661 | ranges[i].high = iter->second; | |
9662 | } | |
c9317f21 | 9663 | |
bedda9ac | 9664 | /* Remove the discriminant field, if it exists. */ |
9c6a1327 | 9665 | struct type *sub_type = TYPE_FIELD_TYPE (type, i); |
1f704f76 | 9666 | if (sub_type->num_fields () > 0) |
bedda9ac | 9667 | { |
5e33d5f4 | 9668 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9669 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9670 | } |
9c6a1327 | 9671 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9672 | sub_type->set_name |
9673 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9674 | type->name (), variant_name)); |
c9317f21 | 9675 | } |
9c6a1327 TT |
9676 | |
9677 | /* Indicate that this is a variant type. */ | |
9678 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, | |
9679 | gdb::array_view<discriminant_range> (ranges, | |
9680 | n_fields - 1)); | |
c9317f21 TT |
9681 | } |
9682 | } | |
9683 | ||
9684 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9685 | ||
9686 | static void | |
9687 | rust_union_quirks (struct dwarf2_cu *cu) | |
9688 | { | |
9689 | gdb_assert (cu->language == language_rust); | |
52941706 | 9690 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9691 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9692 | /* We don't need this any more. */ |
9693 | cu->rust_unions.clear (); | |
c9317f21 TT |
9694 | } |
9695 | ||
8adb8487 TT |
9696 | /* See read.h. */ |
9697 | ||
9698 | type_unit_group_unshareable * | |
9699 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9700 | { | |
9701 | auto iter = this->m_type_units.find (tu_group); | |
9702 | if (iter != this->m_type_units.end ()) | |
9703 | return iter->second.get (); | |
9704 | ||
9705 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9706 | type_unit_group_unshareable *result = uniq.get (); | |
9707 | this->m_type_units[tu_group] = std::move (uniq); | |
9708 | return result; | |
9709 | } | |
9710 | ||
e286671b TT |
9711 | struct type * |
9712 | dwarf2_per_objfile::get_type_for_signatured_type | |
9713 | (signatured_type *sig_type) const | |
9714 | { | |
9715 | auto iter = this->m_type_map.find (sig_type); | |
9716 | if (iter == this->m_type_map.end ()) | |
9717 | return nullptr; | |
9718 | ||
9719 | return iter->second; | |
9720 | } | |
9721 | ||
9722 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9723 | (signatured_type *sig_type, struct type *type) | |
9724 | { | |
9725 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9726 | ||
9727 | this->m_type_map[sig_type] = type; | |
9728 | } | |
9729 | ||
95554aad TT |
9730 | /* A helper function for computing the list of all symbol tables |
9731 | included by PER_CU. */ | |
9732 | ||
9733 | static void | |
4c39bc03 | 9734 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9735 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9736 | dwarf2_per_cu_data *per_cu, |
9737 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9738 | struct compunit_symtab *immediate_parent) |
95554aad | 9739 | { |
af758d11 | 9740 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9741 | if (*slot != NULL) |
9742 | { | |
9743 | /* This inclusion and its children have been processed. */ | |
9744 | return; | |
9745 | } | |
9746 | ||
9747 | *slot = per_cu; | |
af758d11 | 9748 | |
95554aad | 9749 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9750 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9751 | if (cust != NULL) |
ec94af83 DE |
9752 | { |
9753 | /* If this is a type unit only add its symbol table if we haven't | |
9754 | seen it yet (type unit per_cu's can share symtabs). */ | |
9755 | if (per_cu->is_debug_types) | |
9756 | { | |
43f3e411 | 9757 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9758 | if (*slot == NULL) |
9759 | { | |
43f3e411 | 9760 | *slot = cust; |
4c39bc03 | 9761 | result->push_back (cust); |
43f3e411 DE |
9762 | if (cust->user == NULL) |
9763 | cust->user = immediate_parent; | |
ec94af83 DE |
9764 | } |
9765 | } | |
9766 | else | |
f9125b6c | 9767 | { |
4c39bc03 | 9768 | result->push_back (cust); |
43f3e411 DE |
9769 | if (cust->user == NULL) |
9770 | cust->user = immediate_parent; | |
f9125b6c | 9771 | } |
ec94af83 | 9772 | } |
95554aad | 9773 | |
ae640021 AB |
9774 | if (!per_cu->imported_symtabs_empty ()) |
9775 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9776 | { | |
9777 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9778 | all_type_symtabs, ptr, per_objfile, |
9779 | cust); | |
ae640021 | 9780 | } |
95554aad TT |
9781 | } |
9782 | ||
43f3e411 | 9783 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9784 | PER_CU. */ |
9785 | ||
9786 | static void | |
43182c09 SM |
9787 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9788 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9789 | { |
f4dc4d17 DE |
9790 | gdb_assert (! per_cu->is_debug_types); |
9791 | ||
ae640021 | 9792 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9793 | { |
ae640021 | 9794 | int len; |
4c39bc03 | 9795 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9796 | htab_t all_children, all_type_symtabs; |
43182c09 | 9797 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9798 | |
9799 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9800 | if (cust == NULL) |
95554aad TT |
9801 | return; |
9802 | ||
9803 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9804 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9805 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9806 | NULL, xcalloc, xfree); | |
95554aad | 9807 | |
ae640021 | 9808 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9809 | { |
9810 | recursively_compute_inclusions (&result_symtabs, all_children, | |
43182c09 SM |
9811 | all_type_symtabs, ptr, per_objfile, |
9812 | cust); | |
ec94af83 | 9813 | } |
95554aad | 9814 | |
ec94af83 | 9815 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9816 | len = result_symtabs.size (); |
43f3e411 | 9817 | cust->includes |
f6e649dd | 9818 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9819 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9820 | memcpy (cust->includes, result_symtabs.data (), |
9821 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9822 | cust->includes[len] = NULL; |
95554aad | 9823 | |
95554aad | 9824 | htab_delete (all_children); |
ec94af83 | 9825 | htab_delete (all_type_symtabs); |
95554aad TT |
9826 | } |
9827 | } | |
9828 | ||
9829 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9830 | read. */ | |
9831 | ||
9832 | static void | |
ed2dc618 | 9833 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 9834 | { |
5989a64e | 9835 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9836 | { |
9837 | if (! iter->is_debug_types) | |
43182c09 | 9838 | compute_compunit_symtab_includes (iter, dwarf2_per_objfile); |
f4dc4d17 | 9839 | } |
95554aad | 9840 | |
5989a64e | 9841 | dwarf2_per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9842 | } |
9843 | ||
8fc0b21d | 9844 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9845 | already been loaded into memory. */ |
9846 | ||
9847 | static void | |
8fc0b21d | 9848 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 9849 | { |
8fc0b21d | 9850 | dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 9851 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 9852 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9853 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9854 | struct compunit_symtab *cust; |
10b3939b | 9855 | CORE_ADDR baseaddr; |
4359dff1 | 9856 | struct block *static_block; |
3e29f34a | 9857 | CORE_ADDR addr; |
10b3939b | 9858 | |
b3b3bada | 9859 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9860 | |
c89b44cd TT |
9861 | /* Clear the list here in case something was left over. */ |
9862 | cu->method_list.clear (); | |
10b3939b | 9863 | |
95554aad TT |
9864 | cu->language = pretend_language; |
9865 | cu->language_defn = language_def (cu->language); | |
9866 | ||
c906108c | 9867 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9868 | process_die (cu->dies, cu); |
c906108c | 9869 | |
a766d390 DE |
9870 | /* For now fudge the Go package. */ |
9871 | if (cu->language == language_go) | |
9872 | fixup_go_packaging (cu); | |
9873 | ||
5f48f8f3 | 9874 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9875 | should be complete, and it should now be safe to compute all of the |
9876 | physnames. */ | |
9877 | compute_delayed_physnames (cu); | |
3da10d80 | 9878 | |
c9317f21 TT |
9879 | if (cu->language == language_rust) |
9880 | rust_union_quirks (cu); | |
9881 | ||
fae299cd DC |
9882 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9883 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9884 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9885 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9886 | |
3e29f34a | 9887 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9888 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9889 | |
9890 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9891 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9892 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9893 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9894 | this comp unit. */ | |
9895 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9896 | ||
c24bdb02 | 9897 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9898 | SECT_OFF_TEXT (objfile), |
9899 | 0); | |
c906108c | 9900 | |
43f3e411 | 9901 | if (cust != NULL) |
c906108c | 9902 | { |
df15bd07 | 9903 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9904 | |
8be455d7 JK |
9905 | /* Set symtab language to language from DW_AT_language. If the |
9906 | compilation is from a C file generated by language preprocessors, do | |
9907 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9908 | if (!(cu->language == language_c |
40e3ad0e | 9909 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9910 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9911 | |
9912 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9913 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9914 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9915 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9916 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9917 | |
9918 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9919 | needed, it would be wrong due to missing DW_AT_producer there. | |
9920 | ||
9921 | Still one can confuse GDB by using non-standard GCC compilation | |
9922 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9923 | */ |
ab260dad | 9924 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9925 | cust->locations_valid = 1; |
e0d00bc7 JK |
9926 | |
9927 | if (gcc_4_minor >= 5) | |
43f3e411 | 9928 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9929 | |
43f3e411 | 9930 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9931 | } |
9291a0cd | 9932 | |
8fc0b21d | 9933 | dwarf2_per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 9934 | |
95554aad | 9935 | /* Push it for inclusion processing later. */ |
8fc0b21d | 9936 | dwarf2_per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
9937 | |
9938 | /* Not needed any more. */ | |
c24bdb02 | 9939 | cu->reset_builder (); |
f4dc4d17 | 9940 | } |
45cfd468 | 9941 | |
8fc0b21d | 9942 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
9943 | already been loaded into memory. */ |
9944 | ||
9945 | static void | |
8fc0b21d | 9946 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
9947 | enum language pretend_language) |
9948 | { | |
8fc0b21d | 9949 | dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 9950 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43f3e411 | 9951 | struct compunit_symtab *cust; |
0186c6a7 DE |
9952 | struct signatured_type *sig_type; |
9953 | ||
8fc0b21d SM |
9954 | gdb_assert (cu->per_cu->is_debug_types); |
9955 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 9956 | |
c89b44cd TT |
9957 | /* Clear the list here in case something was left over. */ |
9958 | cu->method_list.clear (); | |
f4dc4d17 | 9959 | |
f4dc4d17 DE |
9960 | cu->language = pretend_language; |
9961 | cu->language_defn = language_def (cu->language); | |
9962 | ||
9963 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9964 | process_die (cu->dies, cu); | |
9965 | ||
9966 | /* For now fudge the Go package. */ | |
9967 | if (cu->language == language_go) | |
9968 | fixup_go_packaging (cu); | |
9969 | ||
5f48f8f3 | 9970 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9971 | should be complete, and it should now be safe to compute all of the |
9972 | physnames. */ | |
9973 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9974 | |
c9317f21 TT |
9975 | if (cu->language == language_rust) |
9976 | rust_union_quirks (cu); | |
9977 | ||
f4dc4d17 DE |
9978 | /* TUs share symbol tables. |
9979 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9980 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9981 | this TU's symbols to the existing symtab. */ | |
8adb8487 TT |
9982 | type_unit_group_unshareable *tug_unshare = |
9983 | dwarf2_per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); | |
9984 | if (tug_unshare->compunit_symtab == NULL) | |
45cfd468 | 9985 | { |
c24bdb02 KS |
9986 | buildsym_compunit *builder = cu->get_builder (); |
9987 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 9988 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 9989 | |
43f3e411 | 9990 | if (cust != NULL) |
f4dc4d17 DE |
9991 | { |
9992 | /* Set symtab language to language from DW_AT_language. If the | |
9993 | compilation is from a C file generated by language preprocessors, | |
9994 | do not set the language if it was already deduced by | |
9995 | start_subfile. */ | |
43f3e411 DE |
9996 | if (!(cu->language == language_c |
9997 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9998 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9999 | } |
10000 | } | |
10001 | else | |
10002 | { | |
c24bdb02 | 10003 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 10004 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
10005 | } |
10006 | ||
8fc0b21d | 10007 | dwarf2_per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
10008 | |
10009 | /* Not needed any more. */ | |
c24bdb02 | 10010 | cu->reset_builder (); |
c906108c SS |
10011 | } |
10012 | ||
95554aad TT |
10013 | /* Process an imported unit DIE. */ |
10014 | ||
10015 | static void | |
10016 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10017 | { | |
10018 | struct attribute *attr; | |
10019 | ||
f4dc4d17 DE |
10020 | /* For now we don't handle imported units in type units. */ |
10021 | if (cu->per_cu->is_debug_types) | |
10022 | { | |
10023 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10024 | " supported in type units [in module %s]"), | |
5e22e966 | 10025 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
10026 | } |
10027 | ||
95554aad TT |
10028 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10029 | if (attr != NULL) | |
10030 | { | |
0826b30a | 10031 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 10032 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 10033 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 10034 | dwarf2_per_cu_data *per_cu |
ab432490 | 10035 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 10036 | |
58990295 TV |
10037 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
10038 | into another compilation unit, at root level. Regard this as a hint, | |
10039 | and ignore it. */ | |
10040 | if (die->parent && die->parent->parent == NULL | |
10041 | && per_cu->unit_type == DW_UT_compile | |
10042 | && per_cu->lang == language_cplus) | |
10043 | return; | |
10044 | ||
69d751e3 | 10045 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 10046 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
ab432490 | 10047 | load_full_comp_unit (per_cu, per_objfile, false, cu->language); |
95554aad | 10048 | |
ae640021 | 10049 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10050 | } |
10051 | } | |
10052 | ||
4c8aa72d PA |
10053 | /* RAII object that represents a process_die scope: i.e., |
10054 | starts/finishes processing a DIE. */ | |
10055 | class process_die_scope | |
adde2bff | 10056 | { |
4c8aa72d PA |
10057 | public: |
10058 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10059 | : m_die (die), m_cu (cu) | |
10060 | { | |
10061 | /* We should only be processing DIEs not already in process. */ | |
10062 | gdb_assert (!m_die->in_process); | |
10063 | m_die->in_process = true; | |
10064 | } | |
8c3cb9fa | 10065 | |
4c8aa72d PA |
10066 | ~process_die_scope () |
10067 | { | |
10068 | m_die->in_process = false; | |
10069 | ||
10070 | /* If we're done processing the DIE for the CU that owns the line | |
10071 | header, we don't need the line header anymore. */ | |
10072 | if (m_cu->line_header_die_owner == m_die) | |
10073 | { | |
10074 | delete m_cu->line_header; | |
10075 | m_cu->line_header = NULL; | |
10076 | m_cu->line_header_die_owner = NULL; | |
10077 | } | |
10078 | } | |
10079 | ||
10080 | private: | |
10081 | die_info *m_die; | |
10082 | dwarf2_cu *m_cu; | |
10083 | }; | |
adde2bff | 10084 | |
c906108c SS |
10085 | /* Process a die and its children. */ |
10086 | ||
10087 | static void | |
e7c27a73 | 10088 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10089 | { |
4c8aa72d | 10090 | process_die_scope scope (die, cu); |
adde2bff | 10091 | |
c906108c SS |
10092 | switch (die->tag) |
10093 | { | |
10094 | case DW_TAG_padding: | |
10095 | break; | |
10096 | case DW_TAG_compile_unit: | |
95554aad | 10097 | case DW_TAG_partial_unit: |
e7c27a73 | 10098 | read_file_scope (die, cu); |
c906108c | 10099 | break; |
348e048f DE |
10100 | case DW_TAG_type_unit: |
10101 | read_type_unit_scope (die, cu); | |
10102 | break; | |
c906108c | 10103 | case DW_TAG_subprogram: |
0a4b0913 AB |
10104 | /* Nested subprograms in Fortran get a prefix. */ |
10105 | if (cu->language == language_fortran | |
10106 | && die->parent != NULL | |
10107 | && die->parent->tag == DW_TAG_subprogram) | |
10108 | cu->processing_has_namespace_info = true; | |
10109 | /* Fall through. */ | |
c906108c | 10110 | case DW_TAG_inlined_subroutine: |
edb3359d | 10111 | read_func_scope (die, cu); |
c906108c SS |
10112 | break; |
10113 | case DW_TAG_lexical_block: | |
14898363 L |
10114 | case DW_TAG_try_block: |
10115 | case DW_TAG_catch_block: | |
e7c27a73 | 10116 | read_lexical_block_scope (die, cu); |
c906108c | 10117 | break; |
216f72a1 | 10118 | case DW_TAG_call_site: |
96408a79 SA |
10119 | case DW_TAG_GNU_call_site: |
10120 | read_call_site_scope (die, cu); | |
10121 | break; | |
c906108c | 10122 | case DW_TAG_class_type: |
680b30c7 | 10123 | case DW_TAG_interface_type: |
c906108c SS |
10124 | case DW_TAG_structure_type: |
10125 | case DW_TAG_union_type: | |
134d01f1 | 10126 | process_structure_scope (die, cu); |
c906108c SS |
10127 | break; |
10128 | case DW_TAG_enumeration_type: | |
134d01f1 | 10129 | process_enumeration_scope (die, cu); |
c906108c | 10130 | break; |
134d01f1 | 10131 | |
f792889a DJ |
10132 | /* These dies have a type, but processing them does not create |
10133 | a symbol or recurse to process the children. Therefore we can | |
10134 | read them on-demand through read_type_die. */ | |
c906108c | 10135 | case DW_TAG_subroutine_type: |
72019c9c | 10136 | case DW_TAG_set_type: |
c906108c | 10137 | case DW_TAG_array_type: |
c906108c | 10138 | case DW_TAG_pointer_type: |
c906108c | 10139 | case DW_TAG_ptr_to_member_type: |
c906108c | 10140 | case DW_TAG_reference_type: |
4297a3f0 | 10141 | case DW_TAG_rvalue_reference_type: |
c906108c | 10142 | case DW_TAG_string_type: |
c906108c | 10143 | break; |
134d01f1 | 10144 | |
c906108c | 10145 | case DW_TAG_base_type: |
a02abb62 | 10146 | case DW_TAG_subrange_type: |
cb249c71 | 10147 | case DW_TAG_typedef: |
134d01f1 DJ |
10148 | /* Add a typedef symbol for the type definition, if it has a |
10149 | DW_AT_name. */ | |
f792889a | 10150 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10151 | break; |
c906108c | 10152 | case DW_TAG_common_block: |
e7c27a73 | 10153 | read_common_block (die, cu); |
c906108c SS |
10154 | break; |
10155 | case DW_TAG_common_inclusion: | |
10156 | break; | |
d9fa45fe | 10157 | case DW_TAG_namespace: |
9068261f | 10158 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10159 | read_namespace (die, cu); |
d9fa45fe | 10160 | break; |
5d7cb8df | 10161 | case DW_TAG_module: |
9068261f | 10162 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10163 | read_module (die, cu); |
10164 | break; | |
d9fa45fe | 10165 | case DW_TAG_imported_declaration: |
9068261f | 10166 | cu->processing_has_namespace_info = true; |
74921315 KS |
10167 | if (read_namespace_alias (die, cu)) |
10168 | break; | |
86a73007 TT |
10169 | /* The declaration is not a global namespace alias. */ |
10170 | /* Fall through. */ | |
d9fa45fe | 10171 | case DW_TAG_imported_module: |
9068261f | 10172 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10173 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10174 | || cu->language != language_fortran)) | |
b98664d3 | 10175 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10176 | dwarf_tag_name (die->tag)); |
10177 | read_import_statement (die, cu); | |
d9fa45fe | 10178 | break; |
95554aad TT |
10179 | |
10180 | case DW_TAG_imported_unit: | |
10181 | process_imported_unit_die (die, cu); | |
10182 | break; | |
10183 | ||
71a3c369 TT |
10184 | case DW_TAG_variable: |
10185 | read_variable (die, cu); | |
10186 | break; | |
10187 | ||
c906108c | 10188 | default: |
e7c27a73 | 10189 | new_symbol (die, NULL, cu); |
c906108c SS |
10190 | break; |
10191 | } | |
10192 | } | |
ca69b9e6 DE |
10193 | \f |
10194 | /* DWARF name computation. */ | |
c906108c | 10195 | |
94af9270 KS |
10196 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10197 | needs to have the name of the scope prepended to the name listed in the | |
10198 | die. */ | |
10199 | ||
10200 | static int | |
10201 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10202 | { | |
1c809c68 TT |
10203 | struct attribute *attr; |
10204 | ||
94af9270 KS |
10205 | switch (die->tag) |
10206 | { | |
10207 | case DW_TAG_namespace: | |
10208 | case DW_TAG_typedef: | |
10209 | case DW_TAG_class_type: | |
10210 | case DW_TAG_interface_type: | |
10211 | case DW_TAG_structure_type: | |
10212 | case DW_TAG_union_type: | |
10213 | case DW_TAG_enumeration_type: | |
10214 | case DW_TAG_enumerator: | |
10215 | case DW_TAG_subprogram: | |
08a76f8a | 10216 | case DW_TAG_inlined_subroutine: |
94af9270 | 10217 | case DW_TAG_member: |
74921315 | 10218 | case DW_TAG_imported_declaration: |
94af9270 KS |
10219 | return 1; |
10220 | ||
10221 | case DW_TAG_variable: | |
c2b0a229 | 10222 | case DW_TAG_constant: |
94af9270 KS |
10223 | /* We only need to prefix "globally" visible variables. These include |
10224 | any variable marked with DW_AT_external or any variable that | |
10225 | lives in a namespace. [Variables in anonymous namespaces | |
10226 | require prefixing, but they are not DW_AT_external.] */ | |
10227 | ||
10228 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10229 | { | |
10230 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10231 | |
94af9270 KS |
10232 | return die_needs_namespace (die_specification (die, &spec_cu), |
10233 | spec_cu); | |
10234 | } | |
10235 | ||
1c809c68 | 10236 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10237 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10238 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10239 | return 0; |
10240 | /* A variable in a lexical block of some kind does not need a | |
10241 | namespace, even though in C++ such variables may be external | |
10242 | and have a mangled name. */ | |
10243 | if (die->parent->tag == DW_TAG_lexical_block | |
10244 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10245 | || die->parent->tag == DW_TAG_catch_block |
10246 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10247 | return 0; |
10248 | return 1; | |
94af9270 KS |
10249 | |
10250 | default: | |
10251 | return 0; | |
10252 | } | |
10253 | } | |
10254 | ||
73b9be8b KS |
10255 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10256 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10257 | defined for the given DIE. */ | |
10258 | ||
10259 | static struct attribute * | |
10260 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10261 | { | |
10262 | struct attribute *attr; | |
10263 | ||
10264 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10265 | if (attr == NULL) | |
10266 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10267 | ||
10268 | return attr; | |
10269 | } | |
10270 | ||
10271 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10272 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10273 | defined for the given DIE. */ | |
10274 | ||
10275 | static const char * | |
10276 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10277 | { | |
10278 | const char *linkage_name; | |
10279 | ||
10280 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10281 | if (linkage_name == NULL) | |
10282 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10283 | ||
787de330 TT |
10284 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10285 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10286 | if (cu->language == language_rust && linkage_name != NULL | |
10287 | && strchr (linkage_name, '{') != NULL) | |
10288 | linkage_name = NULL; | |
10289 | ||
73b9be8b KS |
10290 | return linkage_name; |
10291 | } | |
10292 | ||
94af9270 | 10293 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10294 | compute the physname for the object, which include a method's: |
9c37b5ae | 10295 | - formal parameters (C++), |
a766d390 | 10296 | - receiver type (Go), |
a766d390 DE |
10297 | |
10298 | The term "physname" is a bit confusing. | |
10299 | For C++, for example, it is the demangled name. | |
10300 | For Go, for example, it's the mangled name. | |
94af9270 | 10301 | |
af6b7be1 JB |
10302 | For Ada, return the DIE's linkage name rather than the fully qualified |
10303 | name. PHYSNAME is ignored.. | |
10304 | ||
5989a64e | 10305 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10306 | canonicalized. */ |
94af9270 KS |
10307 | |
10308 | static const char * | |
15d034d0 TT |
10309 | dwarf2_compute_name (const char *name, |
10310 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10311 | int physname) |
10312 | { | |
5e22e966 | 10313 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10314 | |
94af9270 KS |
10315 | if (name == NULL) |
10316 | name = dwarf2_name (die, cu); | |
10317 | ||
2ee7123e DE |
10318 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10319 | but otherwise compute it by typename_concat inside GDB. | |
10320 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10321 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10322 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10323 | will set the demangled name to the result of dwarf2_full_name, and it is |
10324 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10325 | if (cu->language == language_ada |
10326 | || (cu->language == language_fortran && physname)) | |
10327 | { | |
10328 | /* For Ada unit, we prefer the linkage name over the name, as | |
10329 | the former contains the exported name, which the user expects | |
10330 | to be able to reference. Ideally, we want the user to be able | |
10331 | to reference this entity using either natural or linkage name, | |
10332 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10333 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10334 | |
2ee7123e DE |
10335 | if (linkage_name != NULL) |
10336 | return linkage_name; | |
f55ee35c JK |
10337 | } |
10338 | ||
94af9270 KS |
10339 | /* These are the only languages we know how to qualify names in. */ |
10340 | if (name != NULL | |
9c37b5ae | 10341 | && (cu->language == language_cplus |
c44af4eb TT |
10342 | || cu->language == language_fortran || cu->language == language_d |
10343 | || cu->language == language_rust)) | |
94af9270 KS |
10344 | { |
10345 | if (die_needs_namespace (die, cu)) | |
10346 | { | |
0d5cff50 | 10347 | const char *prefix; |
34a68019 | 10348 | const char *canonical_name = NULL; |
94af9270 | 10349 | |
d7e74731 PA |
10350 | string_file buf; |
10351 | ||
94af9270 | 10352 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10353 | if (*prefix != '\0') |
10354 | { | |
43816ebc TT |
10355 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10356 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10357 | |
43816ebc | 10358 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10359 | } |
10360 | else | |
d7e74731 | 10361 | buf.puts (name); |
94af9270 | 10362 | |
98bfdba5 PA |
10363 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10364 | as children with DW_TAG_template_type_param or | |
10365 | DW_TAG_value_type_param. If the latter, add them to the name | |
10366 | here. If the name already has template parameters, then | |
10367 | skip this step; some versions of GCC emit both, and | |
10368 | it is more efficient to use the pre-computed name. | |
10369 | ||
10370 | Something to keep in mind about this process: it is very | |
10371 | unlikely, or in some cases downright impossible, to produce | |
10372 | something that will match the mangled name of a function. | |
10373 | If the definition of the function has the same debug info, | |
10374 | we should be able to match up with it anyway. But fallbacks | |
10375 | using the minimal symbol, for instance to find a method | |
10376 | implemented in a stripped copy of libstdc++, will not work. | |
10377 | If we do not have debug info for the definition, we will have to | |
10378 | match them up some other way. | |
10379 | ||
10380 | When we do name matching there is a related problem with function | |
10381 | templates; two instantiated function templates are allowed to | |
10382 | differ only by their return types, which we do not add here. */ | |
10383 | ||
10384 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10385 | { | |
10386 | struct attribute *attr; | |
10387 | struct die_info *child; | |
10388 | int first = 1; | |
10389 | ||
10390 | die->building_fullname = 1; | |
10391 | ||
10392 | for (child = die->child; child != NULL; child = child->sibling) | |
10393 | { | |
10394 | struct type *type; | |
12df843f | 10395 | LONGEST value; |
d521ce57 | 10396 | const gdb_byte *bytes; |
98bfdba5 PA |
10397 | struct dwarf2_locexpr_baton *baton; |
10398 | struct value *v; | |
10399 | ||
10400 | if (child->tag != DW_TAG_template_type_param | |
10401 | && child->tag != DW_TAG_template_value_param) | |
10402 | continue; | |
10403 | ||
10404 | if (first) | |
10405 | { | |
d7e74731 | 10406 | buf.puts ("<"); |
98bfdba5 PA |
10407 | first = 0; |
10408 | } | |
10409 | else | |
d7e74731 | 10410 | buf.puts (", "); |
98bfdba5 PA |
10411 | |
10412 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10413 | if (attr == NULL) | |
10414 | { | |
b98664d3 | 10415 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10416 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10417 | continue; |
10418 | } | |
10419 | type = die_type (child, cu); | |
10420 | ||
10421 | if (child->tag == DW_TAG_template_type_param) | |
10422 | { | |
c1ec8cea TT |
10423 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10424 | &type_print_raw_options); | |
98bfdba5 PA |
10425 | continue; |
10426 | } | |
10427 | ||
10428 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10429 | if (attr == NULL) | |
10430 | { | |
b98664d3 | 10431 | complaint (_("template parameter missing " |
3e43a32a | 10432 | "DW_AT_const_value")); |
d7e74731 | 10433 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10434 | continue; |
10435 | } | |
10436 | ||
10437 | dwarf2_const_value_attr (attr, type, name, | |
10438 | &cu->comp_unit_obstack, cu, | |
10439 | &value, &bytes, &baton); | |
10440 | ||
10441 | if (TYPE_NOSIGN (type)) | |
10442 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10443 | changed, this can use value_print instead. */ | |
d7e74731 | 10444 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10445 | else |
10446 | { | |
10447 | struct value_print_options opts; | |
10448 | ||
10449 | if (baton != NULL) | |
10450 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10451 | baton->data, | |
10452 | baton->size, | |
9f47c707 SM |
10453 | baton->per_cu, |
10454 | baton->per_objfile); | |
98bfdba5 PA |
10455 | else if (bytes != NULL) |
10456 | { | |
10457 | v = allocate_value (type); | |
10458 | memcpy (value_contents_writeable (v), bytes, | |
10459 | TYPE_LENGTH (type)); | |
10460 | } | |
10461 | else | |
10462 | v = value_from_longest (type, value); | |
10463 | ||
3e43a32a MS |
10464 | /* Specify decimal so that we do not depend on |
10465 | the radix. */ | |
98bfdba5 PA |
10466 | get_formatted_print_options (&opts, 'd'); |
10467 | opts.raw = 1; | |
d7e74731 | 10468 | value_print (v, &buf, &opts); |
98bfdba5 | 10469 | release_value (v); |
98bfdba5 PA |
10470 | } |
10471 | } | |
10472 | ||
10473 | die->building_fullname = 0; | |
10474 | ||
10475 | if (!first) | |
10476 | { | |
10477 | /* Close the argument list, with a space if necessary | |
10478 | (nested templates). */ | |
d7e74731 PA |
10479 | if (!buf.empty () && buf.string ().back () == '>') |
10480 | buf.puts (" >"); | |
98bfdba5 | 10481 | else |
d7e74731 | 10482 | buf.puts (">"); |
98bfdba5 PA |
10483 | } |
10484 | } | |
10485 | ||
9c37b5ae | 10486 | /* For C++ methods, append formal parameter type |
94af9270 | 10487 | information, if PHYSNAME. */ |
6e70227d | 10488 | |
94af9270 | 10489 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10490 | && cu->language == language_cplus) |
94af9270 KS |
10491 | { |
10492 | struct type *type = read_type_die (die, cu); | |
10493 | ||
d7e74731 | 10494 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10495 | &type_print_raw_options); |
94af9270 | 10496 | |
9c37b5ae | 10497 | if (cu->language == language_cplus) |
94af9270 | 10498 | { |
60430eff DJ |
10499 | /* Assume that an artificial first parameter is |
10500 | "this", but do not crash if it is not. RealView | |
10501 | marks unnamed (and thus unused) parameters as | |
10502 | artificial; there is no way to differentiate | |
10503 | the two cases. */ | |
1f704f76 | 10504 | if (type->num_fields () > 0 |
94af9270 | 10505 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
78134374 | 10506 | && TYPE_FIELD_TYPE (type, 0)->code () == TYPE_CODE_PTR |
3e43a32a MS |
10507 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10508 | 0)))) | |
d7e74731 | 10509 | buf.puts (" const"); |
94af9270 KS |
10510 | } |
10511 | } | |
10512 | ||
d7e74731 | 10513 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10514 | |
10515 | if (cu->language == language_cplus) | |
34a68019 | 10516 | canonical_name |
322a8516 | 10517 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10518 | objfile); |
34a68019 TT |
10519 | |
10520 | /* If we only computed INTERMEDIATE_NAME, or if | |
10521 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10522 | intern it. */ |
322a8516 | 10523 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10524 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10525 | else |
10526 | name = canonical_name; | |
94af9270 KS |
10527 | } |
10528 | } | |
10529 | ||
10530 | return name; | |
10531 | } | |
10532 | ||
0114d602 DJ |
10533 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10534 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10535 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10536 | not have a name. NAME may either be from a previous call to |
10537 | dwarf2_name or NULL. | |
10538 | ||
9c37b5ae | 10539 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10540 | |
10541 | static const char * | |
15d034d0 | 10542 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10543 | { |
94af9270 KS |
10544 | return dwarf2_compute_name (name, die, cu, 0); |
10545 | } | |
0114d602 | 10546 | |
94af9270 KS |
10547 | /* Construct a physname for the given DIE in CU. NAME may either be |
10548 | from a previous call to dwarf2_name or NULL. The result will be | |
10549 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10550 | name. | |
0114d602 | 10551 | |
9c37b5ae | 10552 | The output string will be canonicalized (if C++). */ |
0114d602 | 10553 | |
94af9270 | 10554 | static const char * |
15d034d0 | 10555 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10556 | { |
5e22e966 | 10557 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10558 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10559 | int need_copy = 1; |
10560 | ||
10561 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10562 | on its own. */ | |
10563 | if (!die_needs_namespace (die, cu)) | |
10564 | return dwarf2_compute_name (name, die, cu, 1); | |
10565 | ||
906bb4c5 TT |
10566 | if (cu->language != language_rust) |
10567 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10568 | |
10569 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10570 | has computed. */ | |
791afaa2 | 10571 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10572 | if (mangled != NULL) |
900e11f9 | 10573 | { |
900e11f9 | 10574 | |
59cc4834 JB |
10575 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10576 | { | |
10577 | /* Do nothing (do not demangle the symbol name). */ | |
10578 | } | |
10579 | else if (cu->language == language_go) | |
a766d390 | 10580 | { |
5e2db402 TT |
10581 | /* This is a lie, but we already lie to the caller new_symbol. |
10582 | new_symbol assumes we return the mangled name. | |
a766d390 | 10583 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10584 | } |
10585 | else | |
10586 | { | |
0eb876f5 JB |
10587 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10588 | their return type. It is easier for GDB users to search | |
10589 | for such functions as `name(params)' than `long name(params)'. | |
10590 | In such case the minimal symbol names do not match the full | |
10591 | symbol names but for template functions there is never a need | |
10592 | to look up their definition from their declaration so | |
10593 | the only disadvantage remains the minimal symbol variant | |
10594 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10595 | demangled.reset (gdb_demangle (mangled, |
10596 | (DMGL_PARAMS | DMGL_ANSI | |
10597 | | DMGL_RET_DROP))); | |
a766d390 | 10598 | } |
900e11f9 | 10599 | if (demangled) |
791afaa2 | 10600 | canon = demangled.get (); |
900e11f9 JK |
10601 | else |
10602 | { | |
10603 | canon = mangled; | |
10604 | need_copy = 0; | |
10605 | } | |
10606 | } | |
10607 | ||
10608 | if (canon == NULL || check_physname) | |
10609 | { | |
10610 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10611 | ||
10612 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10613 | { | |
10614 | /* It may not mean a bug in GDB. The compiler could also | |
10615 | compute DW_AT_linkage_name incorrectly. But in such case | |
10616 | GDB would need to be bug-to-bug compatible. */ | |
10617 | ||
b98664d3 | 10618 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10619 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10620 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10621 | objfile_name (objfile)); |
900e11f9 JK |
10622 | |
10623 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10624 | is available here - over computed PHYSNAME. It is safer | |
10625 | against both buggy GDB and buggy compilers. */ | |
10626 | ||
10627 | retval = canon; | |
10628 | } | |
10629 | else | |
10630 | { | |
10631 | retval = physname; | |
10632 | need_copy = 0; | |
10633 | } | |
10634 | } | |
10635 | else | |
10636 | retval = canon; | |
10637 | ||
10638 | if (need_copy) | |
be1e3d3e | 10639 | retval = objfile->intern (retval); |
900e11f9 | 10640 | |
900e11f9 | 10641 | return retval; |
0114d602 DJ |
10642 | } |
10643 | ||
74921315 KS |
10644 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10645 | a new symbol for it. | |
10646 | ||
10647 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10648 | ||
10649 | static int | |
10650 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10651 | { | |
10652 | struct attribute *attr; | |
10653 | ||
10654 | /* If the die does not have a name, this is not a namespace | |
10655 | alias. */ | |
10656 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10657 | if (attr != NULL) | |
10658 | { | |
10659 | int num; | |
10660 | struct die_info *d = die; | |
10661 | struct dwarf2_cu *imported_cu = cu; | |
10662 | ||
10663 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10664 | keep inspecting DIEs until we hit the underlying import. */ | |
10665 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10666 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10667 | { | |
10668 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10669 | if (attr == NULL) | |
10670 | break; | |
10671 | ||
10672 | d = follow_die_ref (d, attr, &imported_cu); | |
10673 | if (d->tag != DW_TAG_imported_declaration) | |
10674 | break; | |
10675 | } | |
10676 | ||
10677 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10678 | { | |
b98664d3 | 10679 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10680 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10681 | return 0; |
10682 | } | |
10683 | ||
10684 | if (attr != NULL) | |
10685 | { | |
10686 | struct type *type; | |
0826b30a | 10687 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10688 | |
aa66c379 | 10689 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10690 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10691 | { |
10692 | /* This declaration is a global namespace alias. Add | |
10693 | a symbol for it whose type is the aliased namespace. */ | |
10694 | new_symbol (die, type, cu); | |
10695 | return 1; | |
10696 | } | |
10697 | } | |
10698 | } | |
10699 | ||
10700 | return 0; | |
10701 | } | |
10702 | ||
22cee43f | 10703 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10704 | current context for CU. |
22cee43f PMR |
10705 | |
10706 | For Ada, imported declarations can materialize renamings, which *may* be | |
10707 | global. However it is impossible (for now?) in DWARF to distinguish | |
10708 | "external" imported declarations and "static" ones. As all imported | |
10709 | declarations seem to be static in all other languages, make them all CU-wide | |
10710 | global only in Ada. */ | |
10711 | ||
10712 | static struct using_direct ** | |
804d2729 | 10713 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10714 | { |
c24bdb02 KS |
10715 | if (cu->language == language_ada |
10716 | && cu->get_builder ()->outermost_context_p ()) | |
10717 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10718 | else |
c24bdb02 | 10719 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10720 | } |
10721 | ||
27aa8d6a SW |
10722 | /* Read the import statement specified by the given die and record it. */ |
10723 | ||
10724 | static void | |
10725 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10726 | { | |
5e22e966 | 10727 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10728 | struct attribute *import_attr; |
32019081 | 10729 | struct die_info *imported_die, *child_die; |
de4affc9 | 10730 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10731 | const char *imported_name; |
794684b6 | 10732 | const char *imported_name_prefix; |
13387711 SW |
10733 | const char *canonical_name; |
10734 | const char *import_alias; | |
10735 | const char *imported_declaration = NULL; | |
794684b6 | 10736 | const char *import_prefix; |
eb1e02fd | 10737 | std::vector<const char *> excludes; |
13387711 | 10738 | |
27aa8d6a SW |
10739 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10740 | if (import_attr == NULL) | |
10741 | { | |
b98664d3 | 10742 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10743 | dwarf_tag_name (die->tag)); |
10744 | return; | |
10745 | } | |
10746 | ||
de4affc9 CC |
10747 | imported_cu = cu; |
10748 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10749 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10750 | if (imported_name == NULL) |
10751 | { | |
10752 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10753 | ||
10754 | The import in the following code: | |
10755 | namespace A | |
10756 | { | |
10757 | typedef int B; | |
10758 | } | |
10759 | ||
10760 | int main () | |
10761 | { | |
10762 | using A::B; | |
10763 | B b; | |
10764 | return b; | |
10765 | } | |
10766 | ||
10767 | ... | |
10768 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10769 | <52> DW_AT_decl_file : 1 | |
10770 | <53> DW_AT_decl_line : 6 | |
10771 | <54> DW_AT_import : <0x75> | |
10772 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10773 | <59> DW_AT_name : B | |
10774 | <5b> DW_AT_decl_file : 1 | |
10775 | <5c> DW_AT_decl_line : 2 | |
10776 | <5d> DW_AT_type : <0x6e> | |
10777 | ... | |
10778 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10779 | <76> DW_AT_byte_size : 4 | |
10780 | <77> DW_AT_encoding : 5 (signed) | |
10781 | ||
10782 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10783 | This case will be ignored until the gcc bug is fixed. */ | |
10784 | return; | |
10785 | } | |
10786 | ||
82856980 SW |
10787 | /* Figure out the local name after import. */ |
10788 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10789 | |
794684b6 SW |
10790 | /* Figure out where the statement is being imported to. */ |
10791 | import_prefix = determine_prefix (die, cu); | |
10792 | ||
10793 | /* Figure out what the scope of the imported die is and prepend it | |
10794 | to the name of the imported die. */ | |
de4affc9 | 10795 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10796 | |
f55ee35c JK |
10797 | if (imported_die->tag != DW_TAG_namespace |
10798 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10799 | { |
13387711 SW |
10800 | imported_declaration = imported_name; |
10801 | canonical_name = imported_name_prefix; | |
794684b6 | 10802 | } |
13387711 | 10803 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10804 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10805 | imported_name_prefix, |
10806 | (cu->language == language_d ? "." : "::"), | |
10807 | imported_name, (char *) NULL); | |
13387711 SW |
10808 | else |
10809 | canonical_name = imported_name; | |
794684b6 | 10810 | |
32019081 JK |
10811 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10812 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10813 | child_die = child_die->sibling) |
32019081 JK |
10814 | { |
10815 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10816 | represented by an imported module entry with an import attribute | |
10817 | referring to the module and owned entries corresponding to those | |
10818 | entities that are renamed as part of being imported. */ | |
10819 | ||
10820 | if (child_die->tag != DW_TAG_imported_declaration) | |
10821 | { | |
b98664d3 | 10822 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10823 | "- DIE at %s [in module %s]"), |
10824 | sect_offset_str (child_die->sect_off), | |
10825 | objfile_name (objfile)); | |
32019081 JK |
10826 | continue; |
10827 | } | |
10828 | ||
10829 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10830 | if (import_attr == NULL) | |
10831 | { | |
b98664d3 | 10832 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10833 | dwarf_tag_name (child_die->tag)); |
10834 | continue; | |
10835 | } | |
10836 | ||
10837 | imported_cu = cu; | |
10838 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10839 | &imported_cu); | |
10840 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10841 | if (imported_name == NULL) | |
10842 | { | |
b98664d3 | 10843 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10844 | "imported name - DIE at %s [in module %s]"), |
10845 | sect_offset_str (child_die->sect_off), | |
10846 | objfile_name (objfile)); | |
32019081 JK |
10847 | continue; |
10848 | } | |
10849 | ||
eb1e02fd | 10850 | excludes.push_back (imported_name); |
32019081 JK |
10851 | |
10852 | process_die (child_die, cu); | |
10853 | } | |
10854 | ||
804d2729 | 10855 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10856 | import_prefix, |
10857 | canonical_name, | |
10858 | import_alias, | |
10859 | imported_declaration, | |
10860 | excludes, | |
10861 | 0, | |
10862 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10863 | } |
10864 | ||
5230b05a WT |
10865 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10866 | types, but gives them a size of zero. Starting with version 14, | |
10867 | ICC is compatible with GCC. */ | |
10868 | ||
9068261f | 10869 | static bool |
5230b05a WT |
10870 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10871 | { | |
10872 | if (!cu->checked_producer) | |
10873 | check_producer (cu); | |
10874 | ||
10875 | return cu->producer_is_icc_lt_14; | |
10876 | } | |
10877 | ||
eb77c9df AB |
10878 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10879 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10880 | which says that void functions should not have a DW_AT_type. */ | |
10881 | ||
10882 | static bool | |
10883 | producer_is_icc (struct dwarf2_cu *cu) | |
10884 | { | |
10885 | if (!cu->checked_producer) | |
10886 | check_producer (cu); | |
10887 | ||
10888 | return cu->producer_is_icc; | |
10889 | } | |
10890 | ||
1b80a9fa JK |
10891 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10892 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10893 | this, it was first present in GCC release 4.3.0. */ | |
10894 | ||
9068261f | 10895 | static bool |
1b80a9fa JK |
10896 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10897 | { | |
10898 | if (!cu->checked_producer) | |
10899 | check_producer (cu); | |
10900 | ||
10901 | return cu->producer_is_gcc_lt_4_3; | |
10902 | } | |
10903 | ||
d721ba37 PA |
10904 | static file_and_directory |
10905 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10906 | { |
d721ba37 PA |
10907 | file_and_directory res; |
10908 | ||
9291a0cd TT |
10909 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10910 | is not a source language identifier. */ | |
d721ba37 PA |
10911 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10912 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10913 | |
d721ba37 PA |
10914 | if (res.comp_dir == NULL |
10915 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10916 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10917 | { |
d721ba37 PA |
10918 | res.comp_dir_storage = ldirname (res.name); |
10919 | if (!res.comp_dir_storage.empty ()) | |
10920 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10921 | } |
d721ba37 | 10922 | if (res.comp_dir != NULL) |
9291a0cd TT |
10923 | { |
10924 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10925 | directory, get rid of it. */ | |
d721ba37 | 10926 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10927 | |
d721ba37 PA |
10928 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10929 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10930 | } |
10931 | ||
d721ba37 PA |
10932 | if (res.name == NULL) |
10933 | res.name = "<unknown>"; | |
10934 | ||
10935 | return res; | |
9291a0cd TT |
10936 | } |
10937 | ||
f4dc4d17 DE |
10938 | /* Handle DW_AT_stmt_list for a compilation unit. |
10939 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10940 | COMP_DIR is the compilation directory. LOWPC is passed to |
10941 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10942 | |
10943 | static void | |
10944 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10945 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10946 | { |
5e22e966 | 10947 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
2ab95328 | 10948 | struct attribute *attr; |
527f3840 JK |
10949 | struct line_header line_header_local; |
10950 | hashval_t line_header_local_hash; | |
527f3840 JK |
10951 | void **slot; |
10952 | int decode_mapping; | |
2ab95328 | 10953 | |
f4dc4d17 DE |
10954 | gdb_assert (! cu->per_cu->is_debug_types); |
10955 | ||
2ab95328 | 10956 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
10957 | if (attr == NULL) |
10958 | return; | |
10959 | ||
9c541725 | 10960 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
10961 | |
10962 | /* The line header hash table is only created if needed (it exists to | |
10963 | prevent redundant reading of the line table for partial_units). | |
10964 | If we're given a partial_unit, we'll need it. If we're given a | |
10965 | compile_unit, then use the line header hash table if it's already | |
10966 | created, but don't create one just yet. */ | |
10967 | ||
39b16f87 | 10968 | if (dwarf2_per_objfile->line_header_hash == NULL |
527f3840 | 10969 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 10970 | { |
39b16f87 | 10971 | dwarf2_per_objfile->line_header_hash |
d15acc42 TT |
10972 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10973 | line_header_eq_voidp, | |
10974 | free_line_header_voidp, | |
10975 | xcalloc, xfree)); | |
527f3840 | 10976 | } |
2ab95328 | 10977 | |
9c541725 | 10978 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10979 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10980 | line_header_local_hash = line_header_hash (&line_header_local); | |
39b16f87 | 10981 | if (dwarf2_per_objfile->line_header_hash != NULL) |
527f3840 | 10982 | { |
39b16f87 | 10983 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash.get (), |
527f3840 JK |
10984 | &line_header_local, |
10985 | line_header_local_hash, NO_INSERT); | |
10986 | ||
10987 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10988 | is not present in *SLOT (since if there is something in *SLOT then | |
10989 | it will be for a partial_unit). */ | |
10990 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10991 | { |
527f3840 | 10992 | gdb_assert (*slot != NULL); |
9a3c8263 | 10993 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10994 | return; |
dee91e82 | 10995 | } |
2ab95328 | 10996 | } |
527f3840 JK |
10997 | |
10998 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10999 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11000 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11001 | if (lh == NULL) | |
527f3840 | 11002 | return; |
4c8aa72d PA |
11003 | |
11004 | cu->line_header = lh.release (); | |
11005 | cu->line_header_die_owner = die; | |
527f3840 | 11006 | |
39b16f87 | 11007 | if (dwarf2_per_objfile->line_header_hash == NULL) |
527f3840 JK |
11008 | slot = NULL; |
11009 | else | |
11010 | { | |
39b16f87 | 11011 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash.get (), |
527f3840 JK |
11012 | &line_header_local, |
11013 | line_header_local_hash, INSERT); | |
11014 | gdb_assert (slot != NULL); | |
11015 | } | |
11016 | if (slot != NULL && *slot == NULL) | |
11017 | { | |
11018 | /* This newly decoded line number information unit will be owned | |
11019 | by line_header_hash hash table. */ | |
11020 | *slot = cu->line_header; | |
4c8aa72d | 11021 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11022 | } |
11023 | else | |
11024 | { | |
11025 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11026 | may be already used by multiple CUs. Create only temporary decoded | |
11027 | line_header for this CU - it may happen at most once for each line | |
11028 | number information unit. And if we're not using line_header_hash | |
11029 | then this is what we want as well. */ | |
11030 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11031 | } |
11032 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11033 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11034 | decode_mapping); | |
fff8551c | 11035 | |
2ab95328 TT |
11036 | } |
11037 | ||
95554aad | 11038 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11039 | |
c906108c | 11040 | static void |
e7c27a73 | 11041 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11042 | { |
5e22e966 | 11043 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
dee91e82 | 11044 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 11045 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 11046 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11047 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11048 | struct attribute *attr; | |
c906108c | 11049 | struct die_info *child_die; |
e142c38c | 11050 | CORE_ADDR baseaddr; |
6e70227d | 11051 | |
380618d6 | 11052 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11053 | baseaddr = objfile->text_section_offset (); |
c906108c | 11054 | |
fae299cd | 11055 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11056 | |
11057 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11058 | from finish_block. */ | |
2acceee2 | 11059 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11060 | lowpc = highpc; |
3e29f34a | 11061 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11062 | |
d721ba37 | 11063 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11064 | |
f4b8a18d KW |
11065 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11066 | standardised yet. As a workaround for the language detection we fall | |
11067 | back to the DW_AT_producer string. */ | |
11068 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11069 | cu->language = language_opencl; | |
11070 | ||
3019eac3 DE |
11071 | /* Similar hack for Go. */ |
11072 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11073 | set_cu_language (DW_LANG_Go, cu); | |
11074 | ||
c24bdb02 | 11075 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11076 | |
11077 | /* Decode line number information if present. We do this before | |
11078 | processing child DIEs, so that the line header table is available | |
11079 | for DW_AT_decl_file. */ | |
d721ba37 | 11080 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11081 | |
11082 | /* Process all dies in compilation unit. */ | |
11083 | if (die->child != NULL) | |
11084 | { | |
11085 | child_die = die->child; | |
11086 | while (child_die && child_die->tag) | |
11087 | { | |
11088 | process_die (child_die, cu); | |
436c571c | 11089 | child_die = child_die->sibling; |
3019eac3 DE |
11090 | } |
11091 | } | |
11092 | ||
11093 | /* Decode macro information, if present. Dwarf 2 macro information | |
11094 | refers to information in the line number info statement program | |
11095 | header, so we can only read it if we've read the header | |
11096 | successfully. */ | |
0af92d60 JK |
11097 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11098 | if (attr == NULL) | |
11099 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11100 | if (attr && cu->line_header) |
11101 | { | |
11102 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11103 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11104 | |
43f3e411 | 11105 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11106 | } |
11107 | else | |
11108 | { | |
11109 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11110 | if (attr && cu->line_header) | |
11111 | { | |
11112 | unsigned int macro_offset = DW_UNSND (attr); | |
11113 | ||
43f3e411 | 11114 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11115 | } |
11116 | } | |
3019eac3 DE |
11117 | } |
11118 | ||
c24bdb02 KS |
11119 | void |
11120 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11121 | { |
f4dc4d17 DE |
11122 | struct type_unit_group *tu_group; |
11123 | int first_time; | |
3019eac3 | 11124 | struct attribute *attr; |
9c541725 | 11125 | unsigned int i; |
0186c6a7 | 11126 | struct signatured_type *sig_type; |
3019eac3 | 11127 | |
f4dc4d17 | 11128 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11129 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11130 | |
c24bdb02 | 11131 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11132 | |
f4dc4d17 | 11133 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11134 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11135 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11136 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11137 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11138 | |
11139 | /* If we've already processed this stmt_list there's no real need to | |
11140 | do it again, we could fake it and just recreate the part we need | |
11141 | (file name,index -> symtab mapping). If data shows this optimization | |
11142 | is useful we can do it then. */ | |
8adb8487 TT |
11143 | type_unit_group_unshareable *tug_unshare |
11144 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11145 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11146 | |
11147 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11148 | debug info. */ | |
fff8551c | 11149 | line_header_up lh; |
f4dc4d17 | 11150 | if (attr != NULL) |
3019eac3 | 11151 | { |
9c541725 | 11152 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11153 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11154 | } |
11155 | if (lh == NULL) | |
11156 | { | |
11157 | if (first_time) | |
c24bdb02 | 11158 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11159 | else |
11160 | { | |
8adb8487 | 11161 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11162 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11163 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11164 | m_builder.reset (new struct buildsym_compunit |
11165 | (COMPUNIT_OBJFILE (cust), "", | |
11166 | COMPUNIT_DIRNAME (cust), | |
11167 | compunit_language (cust), | |
11168 | 0, cust)); | |
770479f2 | 11169 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11170 | } |
f4dc4d17 | 11171 | return; |
3019eac3 DE |
11172 | } |
11173 | ||
c24bdb02 KS |
11174 | line_header = lh.release (); |
11175 | line_header_die_owner = die; | |
3019eac3 | 11176 | |
f4dc4d17 DE |
11177 | if (first_time) |
11178 | { | |
c24bdb02 | 11179 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11180 | |
1fd60fc0 DE |
11181 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11182 | still initializing it, and our caller (a few levels up) | |
11183 | process_full_type_unit still needs to know if this is the first | |
11184 | time. */ | |
11185 | ||
8adb8487 | 11186 | tug_unshare->symtabs |
4ac93832 TT |
11187 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11188 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11189 | |
7ba99d21 AT |
11190 | auto &file_names = line_header->file_names (); |
11191 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11192 | { |
7ba99d21 | 11193 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11194 | dwarf2_start_subfile (this, fe.name, |
11195 | fe.include_dir (line_header)); | |
11196 | buildsym_compunit *b = get_builder (); | |
11197 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11198 | { |
4c8aa72d PA |
11199 | /* NOTE: start_subfile will recognize when it's been |
11200 | passed a file it has already seen. So we can't | |
11201 | assume there's a simple mapping from | |
11202 | cu->line_header->file_names to subfiles, plus | |
11203 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11204 | b->get_current_subfile ()->symtab |
11205 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11206 | } |
11207 | ||
c24bdb02 | 11208 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11209 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11210 | } |
11211 | } | |
11212 | else | |
3019eac3 | 11213 | { |
c24bdb02 | 11214 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11215 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11216 | m_builder.reset (new struct buildsym_compunit |
11217 | (COMPUNIT_OBJFILE (cust), "", | |
11218 | COMPUNIT_DIRNAME (cust), | |
11219 | compunit_language (cust), | |
11220 | 0, cust)); | |
770479f2 | 11221 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11222 | |
7ba99d21 AT |
11223 | auto &file_names = line_header->file_names (); |
11224 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11225 | { |
7ba99d21 | 11226 | file_entry &fe = file_names[i]; |
8adb8487 | 11227 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11228 | } |
3019eac3 DE |
11229 | } |
11230 | ||
f4dc4d17 DE |
11231 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11232 | so they don't have a "real" (so to speak) symtab anyway. | |
11233 | There is later code that will assign the main symtab to all symbols | |
11234 | that don't have one. We need to handle the case of a symbol with a | |
11235 | missing symtab (DW_AT_decl_file) anyway. */ | |
11236 | } | |
3019eac3 | 11237 | |
f4dc4d17 DE |
11238 | /* Process DW_TAG_type_unit. |
11239 | For TUs we want to skip the first top level sibling if it's not the | |
11240 | actual type being defined by this TU. In this case the first top | |
11241 | level sibling is there to provide context only. */ | |
3019eac3 | 11242 | |
f4dc4d17 DE |
11243 | static void |
11244 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11245 | { | |
11246 | struct die_info *child_die; | |
3019eac3 | 11247 | |
f4dc4d17 DE |
11248 | prepare_one_comp_unit (cu, die, language_minimal); |
11249 | ||
11250 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11251 | We do this before processing child DIEs, so that the line header table | |
11252 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11253 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11254 | |
11255 | if (die->child != NULL) | |
11256 | { | |
11257 | child_die = die->child; | |
11258 | while (child_die && child_die->tag) | |
11259 | { | |
11260 | process_die (child_die, cu); | |
436c571c | 11261 | child_die = child_die->sibling; |
f4dc4d17 DE |
11262 | } |
11263 | } | |
3019eac3 DE |
11264 | } |
11265 | \f | |
80626a55 DE |
11266 | /* DWO/DWP files. |
11267 | ||
11268 | http://gcc.gnu.org/wiki/DebugFission | |
11269 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11270 | ||
11271 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11272 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11273 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11274 | |
11275 | static hashval_t | |
11276 | hash_dwo_file (const void *item) | |
11277 | { | |
9a3c8263 | 11278 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11279 | hashval_t hash; |
3019eac3 | 11280 | |
a2ce51a0 DE |
11281 | hash = htab_hash_string (dwo_file->dwo_name); |
11282 | if (dwo_file->comp_dir != NULL) | |
11283 | hash += htab_hash_string (dwo_file->comp_dir); | |
11284 | return hash; | |
3019eac3 DE |
11285 | } |
11286 | ||
11287 | static int | |
11288 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11289 | { | |
9a3c8263 SM |
11290 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11291 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11292 | |
a2ce51a0 DE |
11293 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11294 | return 0; | |
11295 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11296 | return lhs->comp_dir == rhs->comp_dir; | |
11297 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11298 | } |
11299 | ||
11300 | /* Allocate a hash table for DWO files. */ | |
11301 | ||
51ac9db5 | 11302 | static htab_up |
298e9637 | 11303 | allocate_dwo_file_hash_table () |
3019eac3 | 11304 | { |
51ac9db5 SM |
11305 | auto delete_dwo_file = [] (void *item) |
11306 | { | |
11307 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11308 | ||
11309 | delete dwo_file; | |
11310 | }; | |
11311 | ||
bc68fb19 TT |
11312 | return htab_up (htab_create_alloc (41, |
11313 | hash_dwo_file, | |
11314 | eq_dwo_file, | |
11315 | delete_dwo_file, | |
11316 | xcalloc, xfree)); | |
3019eac3 DE |
11317 | } |
11318 | ||
80626a55 DE |
11319 | /* Lookup DWO file DWO_NAME. */ |
11320 | ||
11321 | static void ** | |
ed2dc618 SM |
11322 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11323 | const char *dwo_name, | |
11324 | const char *comp_dir) | |
80626a55 DE |
11325 | { |
11326 | struct dwo_file find_entry; | |
11327 | void **slot; | |
11328 | ||
5989a64e SM |
11329 | if (dwarf2_per_objfile->per_bfd->dwo_files == NULL) |
11330 | dwarf2_per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11331 | |
0ac5b59e DE |
11332 | find_entry.dwo_name = dwo_name; |
11333 | find_entry.comp_dir = comp_dir; | |
5989a64e | 11334 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11335 | INSERT); |
80626a55 DE |
11336 | |
11337 | return slot; | |
11338 | } | |
11339 | ||
3019eac3 DE |
11340 | static hashval_t |
11341 | hash_dwo_unit (const void *item) | |
11342 | { | |
9a3c8263 | 11343 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11344 | |
11345 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11346 | return dwo_unit->signature; | |
11347 | } | |
11348 | ||
11349 | static int | |
11350 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11351 | { | |
9a3c8263 SM |
11352 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11353 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11354 | |
11355 | /* The signature is assumed to be unique within the DWO file. | |
11356 | So while object file CU dwo_id's always have the value zero, | |
11357 | that's OK, assuming each object file DWO file has only one CU, | |
11358 | and that's the rule for now. */ | |
11359 | return lhs->signature == rhs->signature; | |
11360 | } | |
11361 | ||
11362 | /* Allocate a hash table for DWO CUs,TUs. | |
11363 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11364 | ||
b0b6a987 | 11365 | static htab_up |
298e9637 | 11366 | allocate_dwo_unit_table () |
3019eac3 DE |
11367 | { |
11368 | /* Start out with a pretty small number. | |
11369 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11370 | return htab_up (htab_create_alloc (3, |
11371 | hash_dwo_unit, | |
11372 | eq_dwo_unit, | |
11373 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11374 | } |
11375 | ||
19c3d4c9 | 11376 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11377 | |
11378 | static void | |
19c3d4c9 DE |
11379 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11380 | const gdb_byte *info_ptr, | |
11381 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11382 | struct dwo_file *dwo_file, |
11383 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11384 | { |
11385 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11386 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11387 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11388 | |
a084a2a6 AT |
11389 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11390 | if (!signature.has_value ()) | |
3019eac3 | 11391 | { |
b98664d3 | 11392 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11393 | " its dwo_id [in module %s]"), |
9d8780f0 | 11394 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11395 | return; |
11396 | } | |
11397 | ||
3019eac3 | 11398 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11399 | dwo_unit->signature = *signature; |
8a0459fd | 11400 | dwo_unit->section = section; |
9c541725 | 11401 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11402 | dwo_unit->length = cu->per_cu->length; |
11403 | ||
b4f54984 | 11404 | if (dwarf_read_debug) |
9d8780f0 SM |
11405 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11406 | sect_offset_str (sect_off), | |
9c541725 | 11407 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11408 | } |
11409 | ||
33c5cd75 | 11410 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11411 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11412 | |
33c5cd75 | 11413 | static void |
ed2dc618 | 11414 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e | 11415 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11416 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 DE |
11417 | { |
11418 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
1859c670 | 11419 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
d521ce57 | 11420 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11421 | |
96b79293 | 11422 | section.read (objfile); |
33c5cd75 | 11423 | info_ptr = section.buffer; |
3019eac3 DE |
11424 | |
11425 | if (info_ptr == NULL) | |
33c5cd75 | 11426 | return; |
3019eac3 | 11427 | |
b4f54984 | 11428 | if (dwarf_read_debug) |
19c3d4c9 DE |
11429 | { |
11430 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11431 | section.get_name (), |
11432 | section.get_file_name ()); | |
19c3d4c9 | 11433 | } |
3019eac3 | 11434 | |
33c5cd75 | 11435 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11436 | while (info_ptr < end_ptr) |
11437 | { | |
11438 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11439 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11440 | struct dwo_unit *dwo_unit; |
11441 | void **slot; | |
11442 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11443 | |
11444 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11445 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11446 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11447 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11448 | per_cu.section = §ion; | |
11449 | ||
ab432490 | 11450 | cutu_reader reader (&per_cu, dwarf2_per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11451 | if (!reader.dummy_p) |
11452 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11453 | &dwo_file, &read_unit); |
33c5cd75 DB |
11454 | info_ptr += per_cu.length; |
11455 | ||
11456 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11457 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11458 | continue; |
3019eac3 | 11459 | |
33c5cd75 | 11460 | if (cus_htab == NULL) |
298e9637 | 11461 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11462 | |
1859c670 | 11463 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11464 | struct dwo_unit); |
c0ab21c2 | 11465 | *dwo_unit = read_unit; |
b0b6a987 | 11466 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11467 | gdb_assert (slot != NULL); |
11468 | if (*slot != NULL) | |
19c3d4c9 | 11469 | { |
33c5cd75 DB |
11470 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11471 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11472 | |
b98664d3 | 11473 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11474 | " the entry at offset %s, signature %s"), |
11475 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11476 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11477 | } |
33c5cd75 | 11478 | *slot = (void *)dwo_unit; |
3019eac3 | 11479 | } |
3019eac3 DE |
11480 | } |
11481 | ||
80626a55 DE |
11482 | /* DWP file .debug_{cu,tu}_index section format: |
11483 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11484 | ||
d2415c6c DE |
11485 | DWP Version 1: |
11486 | ||
80626a55 DE |
11487 | Both index sections have the same format, and serve to map a 64-bit |
11488 | signature to a set of section numbers. Each section begins with a header, | |
11489 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11490 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11491 | aligned at 8-byte boundaries in the file. | |
11492 | ||
d2415c6c DE |
11493 | The index section header consists of: |
11494 | ||
11495 | V, 32 bit version number | |
11496 | -, 32 bits unused | |
11497 | N, 32 bit number of compilation units or type units in the index | |
11498 | M, 32 bit number of slots in the hash table | |
80626a55 | 11499 | |
d2415c6c | 11500 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11501 | |
d2415c6c DE |
11502 | The hash table begins at offset 16 in the section, and consists of an array |
11503 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11504 | order of the application binary). Unused slots in the hash table are 0. | |
11505 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11506 | |
d2415c6c DE |
11507 | The parallel table begins immediately after the hash table |
11508 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11509 | array of 32-bit indexes (using the byte order of the application binary), | |
11510 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11511 | table contains a 32-bit index into the pool of section numbers. For unused | |
11512 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11513 | |
73869dc2 DE |
11514 | The pool of section numbers begins immediately following the hash table |
11515 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11516 | section numbers consists of an array of 32-bit words (using the byte order | |
11517 | of the application binary). Each item in the array is indexed starting | |
11518 | from 0. The hash table entry provides the index of the first section | |
11519 | number in the set. Additional section numbers in the set follow, and the | |
11520 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11521 | ||
11522 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11523 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11524 | be the second entry. Other members of the set may follow in any order. | |
11525 | ||
11526 | --- | |
11527 | ||
11528 | DWP Version 2: | |
11529 | ||
11530 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11531 | and the entries in the index tables are now offsets into these sections. | |
11532 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11533 | section. | |
11534 | ||
11535 | Index Section Contents: | |
11536 | Header | |
11537 | Hash Table of Signatures dwp_hash_table.hash_table | |
11538 | Parallel Table of Indices dwp_hash_table.unit_table | |
11539 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11540 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11541 | ||
11542 | The index section header consists of: | |
11543 | ||
11544 | V, 32 bit version number | |
11545 | L, 32 bit number of columns in the table of section offsets | |
11546 | N, 32 bit number of compilation units or type units in the index | |
11547 | M, 32 bit number of slots in the hash table | |
11548 | ||
11549 | Numbers are recorded using the byte order of the application binary. | |
11550 | ||
11551 | The hash table has the same format as version 1. | |
11552 | The parallel table of indices has the same format as version 1, | |
11553 | except that the entries are origin-1 indices into the table of sections | |
11554 | offsets and the table of section sizes. | |
11555 | ||
11556 | The table of offsets begins immediately following the parallel table | |
11557 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11558 | a two-dimensional array of 32-bit words (using the byte order of the | |
11559 | application binary), with L columns and N+1 rows, in row-major order. | |
11560 | Each row in the array is indexed starting from 0. The first row provides | |
11561 | a key to the remaining rows: each column in this row provides an identifier | |
11562 | for a debug section, and the offsets in the same column of subsequent rows | |
11563 | refer to that section. The section identifiers are: | |
11564 | ||
11565 | DW_SECT_INFO 1 .debug_info.dwo | |
11566 | DW_SECT_TYPES 2 .debug_types.dwo | |
11567 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11568 | DW_SECT_LINE 4 .debug_line.dwo | |
11569 | DW_SECT_LOC 5 .debug_loc.dwo | |
11570 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11571 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11572 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11573 | ||
11574 | The offsets provided by the CU and TU index sections are the base offsets | |
11575 | for the contributions made by each CU or TU to the corresponding section | |
11576 | in the package file. Each CU and TU header contains an abbrev_offset | |
11577 | field, used to find the abbreviations table for that CU or TU within the | |
11578 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11579 | be interpreted as relative to the base offset given in the index section. | |
11580 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11581 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11582 | and offsets into other debug sections obtained from DWARF attributes should | |
11583 | also be interpreted as relative to the corresponding base offset. | |
11584 | ||
11585 | The table of sizes begins immediately following the table of offsets. | |
11586 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11587 | with L columns and N rows, in row-major order. Each row in the array is | |
11588 | indexed starting from 1 (row 0 is shared by the two tables). | |
11589 | ||
11590 | --- | |
11591 | ||
11592 | Hash table lookup is handled the same in version 1 and 2: | |
11593 | ||
11594 | We assume that N and M will not exceed 2^32 - 1. | |
11595 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11596 | ||
d2415c6c DE |
11597 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11598 | in the hash table is located as follows: | |
80626a55 | 11599 | |
d2415c6c DE |
11600 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11601 | the low-order k bits all set to 1. | |
80626a55 | 11602 | |
d2415c6c | 11603 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11604 | |
d2415c6c DE |
11605 | 3) If the hash table entry at index H matches the signature, use that |
11606 | entry. If the hash table entry at index H is unused (all zeroes), | |
11607 | terminate the search: the signature is not present in the table. | |
80626a55 | 11608 | |
d2415c6c | 11609 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11610 | |
d2415c6c | 11611 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11612 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11613 | |
11614 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11615 | .debug_{info,types}.dwo in DWP_FILE. | |
11616 | Returns NULL if there isn't one. | |
11617 | Note: This function processes DWP files only, not DWO files. */ | |
11618 | ||
11619 | static struct dwp_hash_table * | |
ed2dc618 SM |
11620 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11621 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
11622 | { |
11623 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 11624 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11625 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11626 | struct dwarf2_section_info *index; |
73869dc2 | 11627 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11628 | struct dwp_hash_table *htab; |
11629 | ||
11630 | if (is_debug_types) | |
11631 | index = &dwp_file->sections.tu_index; | |
11632 | else | |
11633 | index = &dwp_file->sections.cu_index; | |
11634 | ||
96b79293 | 11635 | if (index->empty ()) |
80626a55 | 11636 | return NULL; |
96b79293 | 11637 | index->read (objfile); |
80626a55 DE |
11638 | |
11639 | index_ptr = index->buffer; | |
11640 | index_end = index_ptr + index->size; | |
11641 | ||
11642 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11643 | index_ptr += 4; |
11644 | if (version == 2) | |
11645 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11646 | else | |
11647 | nr_columns = 0; | |
11648 | index_ptr += 4; | |
80626a55 DE |
11649 | nr_units = read_4_bytes (dbfd, index_ptr); |
11650 | index_ptr += 4; | |
11651 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11652 | index_ptr += 4; | |
11653 | ||
73869dc2 | 11654 | if (version != 1 && version != 2) |
80626a55 | 11655 | { |
21aa081e | 11656 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11657 | " [in module %s]"), |
21aa081e | 11658 | pulongest (version), dwp_file->name); |
80626a55 DE |
11659 | } |
11660 | if (nr_slots != (nr_slots & -nr_slots)) | |
11661 | { | |
21aa081e | 11662 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11663 | " is not power of 2 [in module %s]"), |
21aa081e | 11664 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11665 | } |
11666 | ||
5989a64e | 11667 | htab = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11668 | htab->version = version; |
11669 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11670 | htab->nr_units = nr_units; |
11671 | htab->nr_slots = nr_slots; | |
11672 | htab->hash_table = index_ptr; | |
11673 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11674 | |
11675 | /* Exit early if the table is empty. */ | |
11676 | if (nr_slots == 0 || nr_units == 0 | |
11677 | || (version == 2 && nr_columns == 0)) | |
11678 | { | |
11679 | /* All must be zero. */ | |
11680 | if (nr_slots != 0 || nr_units != 0 | |
11681 | || (version == 2 && nr_columns != 0)) | |
11682 | { | |
b98664d3 | 11683 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11684 | " all zero [in modules %s]"), |
11685 | dwp_file->name); | |
11686 | } | |
11687 | return htab; | |
11688 | } | |
11689 | ||
11690 | if (version == 1) | |
11691 | { | |
11692 | htab->section_pool.v1.indices = | |
11693 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11694 | /* It's harder to decide whether the section is too small in v1. | |
11695 | V1 is deprecated anyway so we punt. */ | |
11696 | } | |
11697 | else | |
11698 | { | |
11699 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11700 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11701 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11702 | /* Reverse map for error checking. */ |
11703 | int ids_seen[DW_SECT_MAX + 1]; | |
11704 | int i; | |
11705 | ||
11706 | if (nr_columns < 2) | |
11707 | { | |
11708 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11709 | " in section table [in module %s]"), | |
11710 | dwp_file->name); | |
11711 | } | |
11712 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11713 | { | |
11714 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11715 | " in section table [in module %s]"), | |
11716 | dwp_file->name); | |
11717 | } | |
04fd5eed GB |
11718 | memset (ids, 255, sizeof_ids); |
11719 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11720 | for (i = 0; i < nr_columns; ++i) |
11721 | { | |
11722 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11723 | ||
11724 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11725 | { | |
11726 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11727 | " in section table [in module %s]"), | |
11728 | id, dwp_file->name); | |
11729 | } | |
11730 | if (ids_seen[id] != -1) | |
11731 | { | |
11732 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11733 | " id %d in section table [in module %s]"), | |
11734 | id, dwp_file->name); | |
11735 | } | |
11736 | ids_seen[id] = i; | |
11737 | ids[i] = id; | |
11738 | } | |
11739 | /* Must have exactly one info or types section. */ | |
11740 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11741 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11742 | != 1) | |
11743 | { | |
11744 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11745 | " DWO info/types section [in module %s]"), | |
11746 | dwp_file->name); | |
11747 | } | |
11748 | /* Must have an abbrev section. */ | |
11749 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11750 | { | |
11751 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11752 | " section [in module %s]"), | |
11753 | dwp_file->name); | |
11754 | } | |
11755 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11756 | htab->section_pool.v2.sizes = | |
11757 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11758 | * nr_units * nr_columns); | |
11759 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11760 | * nr_units * nr_columns)) | |
11761 | > index_end) | |
11762 | { | |
11763 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11764 | " [in module %s]"), | |
11765 | dwp_file->name); | |
11766 | } | |
11767 | } | |
80626a55 DE |
11768 | |
11769 | return htab; | |
11770 | } | |
11771 | ||
11772 | /* Update SECTIONS with the data from SECTP. | |
11773 | ||
11774 | This function is like the other "locate" section routines that are | |
11775 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11776 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11777 | |
11778 | The result is non-zero for success, or zero if an error was found. */ | |
11779 | ||
11780 | static int | |
73869dc2 DE |
11781 | locate_v1_virtual_dwo_sections (asection *sectp, |
11782 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11783 | { |
11784 | const struct dwop_section_names *names = &dwop_section_names; | |
11785 | ||
11786 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11787 | { | |
11788 | /* There can be only one. */ | |
049412e3 | 11789 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11790 | return 0; |
049412e3 | 11791 | sections->abbrev.s.section = sectp; |
fd361982 | 11792 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11793 | } |
11794 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11795 | || section_is_p (sectp->name, &names->types_dwo)) | |
11796 | { | |
11797 | /* There can be only one. */ | |
049412e3 | 11798 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11799 | return 0; |
049412e3 | 11800 | sections->info_or_types.s.section = sectp; |
fd361982 | 11801 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11802 | } |
11803 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11804 | { | |
11805 | /* There can be only one. */ | |
049412e3 | 11806 | if (sections->line.s.section != NULL) |
80626a55 | 11807 | return 0; |
049412e3 | 11808 | sections->line.s.section = sectp; |
fd361982 | 11809 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11810 | } |
11811 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11812 | { | |
11813 | /* There can be only one. */ | |
049412e3 | 11814 | if (sections->loc.s.section != NULL) |
80626a55 | 11815 | return 0; |
049412e3 | 11816 | sections->loc.s.section = sectp; |
fd361982 | 11817 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11818 | } |
11819 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11820 | { | |
11821 | /* There can be only one. */ | |
049412e3 | 11822 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11823 | return 0; |
049412e3 | 11824 | sections->macinfo.s.section = sectp; |
fd361982 | 11825 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11826 | } |
11827 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11828 | { | |
11829 | /* There can be only one. */ | |
049412e3 | 11830 | if (sections->macro.s.section != NULL) |
80626a55 | 11831 | return 0; |
049412e3 | 11832 | sections->macro.s.section = sectp; |
fd361982 | 11833 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11834 | } |
11835 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11836 | { | |
11837 | /* There can be only one. */ | |
049412e3 | 11838 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11839 | return 0; |
049412e3 | 11840 | sections->str_offsets.s.section = sectp; |
fd361982 | 11841 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11842 | } |
11843 | else | |
11844 | { | |
11845 | /* No other kind of section is valid. */ | |
11846 | return 0; | |
11847 | } | |
11848 | ||
11849 | return 1; | |
11850 | } | |
11851 | ||
73869dc2 DE |
11852 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11853 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11854 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11855 | This is for DWP version 1 files. */ | |
80626a55 DE |
11856 | |
11857 | static struct dwo_unit * | |
ed2dc618 SM |
11858 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11859 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11860 | uint32_t unit_index, |
11861 | const char *comp_dir, | |
11862 | ULONGEST signature, int is_debug_types) | |
80626a55 | 11863 | { |
73869dc2 DE |
11864 | const struct dwp_hash_table *dwp_htab = |
11865 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11866 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11867 | const char *kind = is_debug_types ? "TU" : "CU"; |
11868 | struct dwo_file *dwo_file; | |
11869 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11870 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11871 | void **dwo_file_slot; |
80626a55 DE |
11872 | int i; |
11873 | ||
73869dc2 DE |
11874 | gdb_assert (dwp_file->version == 1); |
11875 | ||
b4f54984 | 11876 | if (dwarf_read_debug) |
80626a55 | 11877 | { |
73869dc2 | 11878 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 11879 | kind, |
73869dc2 | 11880 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
11881 | dwp_file->name); |
11882 | } | |
11883 | ||
19ac8c2e | 11884 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11885 | Put a limit on the number of sections we look for so that bad data |
11886 | doesn't cause us to loop forever. */ | |
11887 | ||
73869dc2 | 11888 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11889 | (1 /* .debug_info or .debug_types */ \ |
11890 | + 1 /* .debug_abbrev */ \ | |
11891 | + 1 /* .debug_line */ \ | |
11892 | + 1 /* .debug_loc */ \ | |
11893 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11894 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11895 | + 1 /* trailing zero */) |
11896 | ||
11897 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11898 | |
73869dc2 | 11899 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11900 | { |
11901 | asection *sectp; | |
11902 | uint32_t section_nr = | |
11903 | read_4_bytes (dbfd, | |
73869dc2 DE |
11904 | dwp_htab->section_pool.v1.indices |
11905 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11906 | |
11907 | if (section_nr == 0) | |
11908 | break; | |
11909 | if (section_nr >= dwp_file->num_sections) | |
11910 | { | |
11911 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11912 | " [in module %s]"), | |
11913 | dwp_file->name); | |
11914 | } | |
11915 | ||
11916 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11917 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11918 | { |
11919 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11920 | " [in module %s]"), | |
11921 | dwp_file->name); | |
11922 | } | |
11923 | } | |
11924 | ||
11925 | if (i < 2 | |
96b79293 TT |
11926 | || sections.info_or_types.empty () |
11927 | || sections.abbrev.empty ()) | |
80626a55 DE |
11928 | { |
11929 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11930 | " [in module %s]"), | |
11931 | dwp_file->name); | |
11932 | } | |
73869dc2 | 11933 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11934 | { |
11935 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11936 | " [in module %s]"), | |
11937 | dwp_file->name); | |
11938 | } | |
11939 | ||
11940 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11941 | have dwo_unit "live" in that. At least for now. | |
11942 | ||
11943 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11944 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11945 | file, we can combine them back into a virtual DWO file to save space |
11946 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11947 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11948 | ||
791afaa2 TT |
11949 | std::string virtual_dwo_name = |
11950 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11951 | sections.abbrev.get_id (), |
11952 | sections.line.get_id (), | |
11953 | sections.loc.get_id (), | |
11954 | sections.str_offsets.get_id ()); | |
80626a55 | 11955 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11956 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11957 | virtual_dwo_name.c_str (), | |
11958 | comp_dir); | |
80626a55 DE |
11959 | /* Create one if necessary. */ |
11960 | if (*dwo_file_slot == NULL) | |
11961 | { | |
b4f54984 | 11962 | if (dwarf_read_debug) |
80626a55 DE |
11963 | { |
11964 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11965 | virtual_dwo_name.c_str ()); |
80626a55 | 11966 | } |
51ac9db5 | 11967 | dwo_file = new struct dwo_file; |
45940949 | 11968 | dwo_file->dwo_name = dwarf2_per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 11969 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11970 | dwo_file->sections.abbrev = sections.abbrev; |
11971 | dwo_file->sections.line = sections.line; | |
11972 | dwo_file->sections.loc = sections.loc; | |
11973 | dwo_file->sections.macinfo = sections.macinfo; | |
11974 | dwo_file->sections.macro = sections.macro; | |
11975 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11976 | /* The "str" section is global to the entire DWP file. */ | |
11977 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11978 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11979 | there's no need to record it in dwo_file. |
11980 | Also, we can't simply record type sections in dwo_file because | |
11981 | we record a pointer into the vector in dwo_unit. As we collect more | |
11982 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11983 | for it, invalidating all copies of pointers into the previous |
11984 | contents. */ | |
80626a55 DE |
11985 | *dwo_file_slot = dwo_file; |
11986 | } | |
11987 | else | |
11988 | { | |
b4f54984 | 11989 | if (dwarf_read_debug) |
80626a55 DE |
11990 | { |
11991 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11992 | virtual_dwo_name.c_str ()); |
80626a55 | 11993 | } |
9a3c8263 | 11994 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11995 | } |
80626a55 | 11996 | |
5989a64e | 11997 | dwo_unit = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
11998 | dwo_unit->dwo_file = dwo_file; |
11999 | dwo_unit->signature = signature; | |
8d749320 | 12000 | dwo_unit->section = |
5989a64e | 12001 | XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 12002 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12003 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12004 | |
12005 | return dwo_unit; | |
12006 | } | |
12007 | ||
73869dc2 DE |
12008 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12009 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12010 | piece within that section used by a TU/CU, return a virtual section | |
12011 | of just that piece. */ | |
12012 | ||
12013 | static struct dwarf2_section_info | |
ed2dc618 SM |
12014 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12015 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12016 | bfd_size_type offset, bfd_size_type size) |
12017 | { | |
12018 | struct dwarf2_section_info result; | |
12019 | asection *sectp; | |
12020 | ||
12021 | gdb_assert (section != NULL); | |
12022 | gdb_assert (!section->is_virtual); | |
12023 | ||
12024 | memset (&result, 0, sizeof (result)); | |
12025 | result.s.containing_section = section; | |
dc4ccb6f | 12026 | result.is_virtual = true; |
73869dc2 DE |
12027 | |
12028 | if (size == 0) | |
12029 | return result; | |
12030 | ||
96b79293 | 12031 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12032 | |
12033 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12034 | bounds of the real section. This is a pretty-rare event, so just | |
12035 | flag an error (easier) instead of a warning and trying to cope. */ | |
12036 | if (sectp == NULL | |
fd361982 | 12037 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12038 | { |
73869dc2 DE |
12039 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12040 | " in section %s [in module %s]"), | |
fd361982 | 12041 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
12042 | objfile_name (dwarf2_per_objfile->objfile)); |
12043 | } | |
12044 | ||
12045 | result.virtual_offset = offset; | |
12046 | result.size = size; | |
12047 | return result; | |
12048 | } | |
12049 | ||
12050 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12051 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12052 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12053 | This is for DWP version 2 files. */ | |
12054 | ||
12055 | static struct dwo_unit * | |
ed2dc618 SM |
12056 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12057 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12058 | uint32_t unit_index, |
12059 | const char *comp_dir, | |
12060 | ULONGEST signature, int is_debug_types) | |
12061 | { | |
73869dc2 DE |
12062 | const struct dwp_hash_table *dwp_htab = |
12063 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12064 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12065 | const char *kind = is_debug_types ? "TU" : "CU"; |
12066 | struct dwo_file *dwo_file; | |
12067 | struct dwo_unit *dwo_unit; | |
12068 | struct virtual_v2_dwo_sections sections; | |
12069 | void **dwo_file_slot; | |
73869dc2 DE |
12070 | int i; |
12071 | ||
12072 | gdb_assert (dwp_file->version == 2); | |
12073 | ||
b4f54984 | 12074 | if (dwarf_read_debug) |
73869dc2 DE |
12075 | { |
12076 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12077 | kind, | |
12078 | pulongest (unit_index), hex_string (signature), | |
12079 | dwp_file->name); | |
12080 | } | |
12081 | ||
12082 | /* Fetch the section offsets of this DWO unit. */ | |
12083 | ||
12084 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12085 | |
12086 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12087 | { | |
12088 | uint32_t offset = read_4_bytes (dbfd, | |
12089 | dwp_htab->section_pool.v2.offsets | |
12090 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12091 | + i) | |
12092 | * sizeof (uint32_t))); | |
12093 | uint32_t size = read_4_bytes (dbfd, | |
12094 | dwp_htab->section_pool.v2.sizes | |
12095 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12096 | + i) | |
12097 | * sizeof (uint32_t))); | |
12098 | ||
12099 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12100 | { | |
12101 | case DW_SECT_INFO: | |
12102 | case DW_SECT_TYPES: | |
12103 | sections.info_or_types_offset = offset; | |
12104 | sections.info_or_types_size = size; | |
12105 | break; | |
12106 | case DW_SECT_ABBREV: | |
12107 | sections.abbrev_offset = offset; | |
12108 | sections.abbrev_size = size; | |
12109 | break; | |
12110 | case DW_SECT_LINE: | |
12111 | sections.line_offset = offset; | |
12112 | sections.line_size = size; | |
12113 | break; | |
12114 | case DW_SECT_LOC: | |
12115 | sections.loc_offset = offset; | |
12116 | sections.loc_size = size; | |
12117 | break; | |
12118 | case DW_SECT_STR_OFFSETS: | |
12119 | sections.str_offsets_offset = offset; | |
12120 | sections.str_offsets_size = size; | |
12121 | break; | |
12122 | case DW_SECT_MACINFO: | |
12123 | sections.macinfo_offset = offset; | |
12124 | sections.macinfo_size = size; | |
12125 | break; | |
12126 | case DW_SECT_MACRO: | |
12127 | sections.macro_offset = offset; | |
12128 | sections.macro_size = size; | |
12129 | break; | |
12130 | } | |
12131 | } | |
12132 | ||
12133 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12134 | have dwo_unit "live" in that. At least for now. | |
12135 | ||
12136 | The DWP file can be made up of a random collection of CUs and TUs. | |
12137 | However, for each CU + set of TUs that came from the same original DWO | |
12138 | file, we can combine them back into a virtual DWO file to save space | |
12139 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12140 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12141 | ||
791afaa2 TT |
12142 | std::string virtual_dwo_name = |
12143 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12144 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12145 | (long) (sections.line_size ? sections.line_offset : 0), | |
12146 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12147 | (long) (sections.str_offsets_size | |
12148 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12149 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12150 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12151 | virtual_dwo_name.c_str (), | |
12152 | comp_dir); | |
73869dc2 DE |
12153 | /* Create one if necessary. */ |
12154 | if (*dwo_file_slot == NULL) | |
12155 | { | |
b4f54984 | 12156 | if (dwarf_read_debug) |
73869dc2 DE |
12157 | { |
12158 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12159 | virtual_dwo_name.c_str ()); |
73869dc2 | 12160 | } |
51ac9db5 | 12161 | dwo_file = new struct dwo_file; |
45940949 | 12162 | dwo_file->dwo_name = dwarf2_per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12163 | dwo_file->comp_dir = comp_dir; |
12164 | dwo_file->sections.abbrev = | |
ed2dc618 | 12165 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12166 | sections.abbrev_offset, sections.abbrev_size); |
12167 | dwo_file->sections.line = | |
ed2dc618 | 12168 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12169 | sections.line_offset, sections.line_size); |
12170 | dwo_file->sections.loc = | |
ed2dc618 | 12171 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12172 | sections.loc_offset, sections.loc_size); |
12173 | dwo_file->sections.macinfo = | |
ed2dc618 | 12174 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12175 | sections.macinfo_offset, sections.macinfo_size); |
12176 | dwo_file->sections.macro = | |
ed2dc618 | 12177 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12178 | sections.macro_offset, sections.macro_size); |
12179 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12180 | create_dwp_v2_section (dwarf2_per_objfile, |
12181 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12182 | sections.str_offsets_offset, |
12183 | sections.str_offsets_size); | |
12184 | /* The "str" section is global to the entire DWP file. */ | |
12185 | dwo_file->sections.str = dwp_file->sections.str; | |
12186 | /* The info or types section is assigned below to dwo_unit, | |
12187 | there's no need to record it in dwo_file. | |
12188 | Also, we can't simply record type sections in dwo_file because | |
12189 | we record a pointer into the vector in dwo_unit. As we collect more | |
12190 | types we'll grow the vector and eventually have to reallocate space | |
12191 | for it, invalidating all copies of pointers into the previous | |
12192 | contents. */ | |
12193 | *dwo_file_slot = dwo_file; | |
12194 | } | |
12195 | else | |
12196 | { | |
b4f54984 | 12197 | if (dwarf_read_debug) |
73869dc2 DE |
12198 | { |
12199 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12200 | virtual_dwo_name.c_str ()); |
73869dc2 | 12201 | } |
9a3c8263 | 12202 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12203 | } |
73869dc2 | 12204 | |
5989a64e | 12205 | dwo_unit = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12206 | dwo_unit->dwo_file = dwo_file; |
12207 | dwo_unit->signature = signature; | |
8d749320 | 12208 | dwo_unit->section = |
5989a64e | 12209 | XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
ed2dc618 SM |
12210 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12211 | is_debug_types | |
73869dc2 DE |
12212 | ? &dwp_file->sections.types |
12213 | : &dwp_file->sections.info, | |
12214 | sections.info_or_types_offset, | |
12215 | sections.info_or_types_size); | |
12216 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12217 | ||
12218 | return dwo_unit; | |
12219 | } | |
12220 | ||
57d63ce2 DE |
12221 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12222 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12223 | |
12224 | static struct dwo_unit * | |
ed2dc618 SM |
12225 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12226 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12227 | ULONGEST signature, int is_debug_types) |
80626a55 | 12228 | { |
57d63ce2 DE |
12229 | const struct dwp_hash_table *dwp_htab = |
12230 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12231 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12232 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12233 | uint32_t hash = signature & mask; |
12234 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12235 | unsigned int i; | |
12236 | void **slot; | |
870f88f7 | 12237 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12238 | |
12239 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12240 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12241 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12242 | ? dwp_file->loaded_tus.get () |
12243 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12244 | &find_dwo_cu, INSERT); |
80626a55 DE |
12245 | |
12246 | if (*slot != NULL) | |
9a3c8263 | 12247 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12248 | |
12249 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12250 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12251 | { |
12252 | ULONGEST signature_in_table; | |
12253 | ||
12254 | signature_in_table = | |
57d63ce2 | 12255 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12256 | if (signature_in_table == signature) |
12257 | { | |
57d63ce2 DE |
12258 | uint32_t unit_index = |
12259 | read_4_bytes (dbfd, | |
12260 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12261 | |
73869dc2 DE |
12262 | if (dwp_file->version == 1) |
12263 | { | |
ed2dc618 SM |
12264 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12265 | dwp_file, unit_index, | |
73869dc2 DE |
12266 | comp_dir, signature, |
12267 | is_debug_types); | |
12268 | } | |
12269 | else | |
12270 | { | |
ed2dc618 SM |
12271 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12272 | dwp_file, unit_index, | |
73869dc2 DE |
12273 | comp_dir, signature, |
12274 | is_debug_types); | |
12275 | } | |
9a3c8263 | 12276 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12277 | } |
12278 | if (signature_in_table == 0) | |
12279 | return NULL; | |
12280 | hash = (hash + hash2) & mask; | |
12281 | } | |
12282 | ||
12283 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12284 | " [in module %s]"), | |
12285 | dwp_file->name); | |
12286 | } | |
12287 | ||
ab5088bf | 12288 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12289 | Open the file specified by FILE_NAME and hand it off to BFD for |
12290 | preliminary analysis. Return a newly initialized bfd *, which | |
12291 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12292 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12293 | SEARCH_CWD is true if the current directory is to be searched. |
12294 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12295 | If successful, the file is added to the bfd include table of the |
12296 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12297 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12298 | NOTE: This function is derived from symfile_bfd_open. */ |
12299 | ||
192b62ce | 12300 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12301 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12302 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12303 | { |
24b9144d | 12304 | int desc; |
9c02c129 DE |
12305 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12306 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12307 | to debug_file_directory. */ | |
e0cc99a6 | 12308 | const char *search_path; |
9c02c129 DE |
12309 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12310 | ||
e0cc99a6 | 12311 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12312 | if (search_cwd) |
12313 | { | |
12314 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12315 | { |
12316 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12317 | debug_file_directory, | |
12318 | (char *) NULL)); | |
12319 | search_path = search_path_holder.get (); | |
12320 | } | |
6ac97d4c | 12321 | else |
e0cc99a6 | 12322 | search_path = "."; |
6ac97d4c | 12323 | } |
9c02c129 | 12324 | else |
e0cc99a6 | 12325 | search_path = debug_file_directory; |
3019eac3 | 12326 | |
24b9144d | 12327 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12328 | if (is_dwp) |
12329 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12330 | |
12331 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12332 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12333 | O_RDONLY | O_BINARY, &absolute_name); |
12334 | if (desc < 0) | |
12335 | return NULL; | |
12336 | ||
e0cc99a6 TT |
12337 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12338 | gnutarget, desc)); | |
9c02c129 DE |
12339 | if (sym_bfd == NULL) |
12340 | return NULL; | |
192b62ce | 12341 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12342 | |
192b62ce TT |
12343 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12344 | return NULL; | |
3019eac3 | 12345 | |
13aaf454 DE |
12346 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12347 | This is important because things like demangled_names_hash lives in the | |
12348 | objfile's per_bfd space and may have references to things like symbol | |
12349 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12350 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12351 | |
3019eac3 DE |
12352 | return sym_bfd; |
12353 | } | |
12354 | ||
ab5088bf | 12355 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12356 | COMP_DIR is the DW_AT_comp_dir attribute. |
12357 | The result is the bfd handle of the file. | |
12358 | If there is a problem finding or opening the file, return NULL. | |
12359 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12360 | same as symfile_bfd_open. */ | |
12361 | ||
192b62ce | 12362 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12363 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12364 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12365 | { |
80626a55 | 12366 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12367 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12368 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12369 | |
12370 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12371 | ||
12372 | if (comp_dir != NULL) | |
12373 | { | |
43816ebc TT |
12374 | gdb::unique_xmalloc_ptr<char> path_to_try |
12375 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12376 | |
12377 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12378 | search path, which seems useful. */ | |
ed2dc618 | 12379 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12380 | path_to_try.get (), |
ed2dc618 | 12381 | 0 /*is_dwp*/, |
192b62ce | 12382 | 1 /*search_cwd*/)); |
3019eac3 DE |
12383 | if (abfd != NULL) |
12384 | return abfd; | |
12385 | } | |
12386 | ||
12387 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12388 | is a list of paths. */ | |
12389 | ||
12390 | if (*debug_file_directory == '\0') | |
12391 | return NULL; | |
12392 | ||
ed2dc618 SM |
12393 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12394 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12395 | } |
12396 | ||
80626a55 DE |
12397 | /* This function is mapped across the sections and remembers the offset and |
12398 | size of each of the DWO debugging sections we are interested in. */ | |
12399 | ||
12400 | static void | |
12401 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12402 | { | |
9a3c8263 | 12403 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12404 | const struct dwop_section_names *names = &dwop_section_names; |
12405 | ||
12406 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12407 | { | |
049412e3 | 12408 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12409 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12410 | } |
12411 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12412 | { | |
049412e3 | 12413 | dwo_sections->info.s.section = sectp; |
fd361982 | 12414 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12415 | } |
12416 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12417 | { | |
049412e3 | 12418 | dwo_sections->line.s.section = sectp; |
fd361982 | 12419 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12420 | } |
12421 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12422 | { | |
049412e3 | 12423 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12424 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12425 | } |
41144253 | 12426 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12427 | { | |
12428 | dwo_sections->loclists.s.section = sectp; | |
12429 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12430 | } | |
80626a55 DE |
12431 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12432 | { | |
049412e3 | 12433 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12434 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12435 | } |
12436 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12437 | { | |
049412e3 | 12438 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12439 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12440 | } |
12441 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12442 | { | |
049412e3 | 12443 | dwo_sections->str.s.section = sectp; |
fd361982 | 12444 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12445 | } |
12446 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12447 | { | |
049412e3 | 12448 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12449 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12450 | } |
12451 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12452 | { | |
12453 | struct dwarf2_section_info type_section; | |
12454 | ||
12455 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12456 | type_section.s.section = sectp; |
fd361982 | 12457 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12458 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12459 | } |
12460 | } | |
12461 | ||
ab5088bf | 12462 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12463 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12464 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12465 | |
12466 | static struct dwo_file * | |
4ab09049 SM |
12467 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12468 | const char *comp_dir) | |
3019eac3 | 12469 | { |
4ab09049 | 12470 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 12471 | |
fb1eb2f9 | 12472 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12473 | if (dbfd == NULL) |
12474 | { | |
b4f54984 | 12475 | if (dwarf_read_debug) |
80626a55 DE |
12476 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12477 | return NULL; | |
12478 | } | |
263db9a1 | 12479 | |
51ac9db5 | 12480 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12481 | dwo_file->dwo_name = dwo_name; |
12482 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12483 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12484 | |
fb1eb2f9 | 12485 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12486 | &dwo_file->sections); |
3019eac3 | 12487 | |
4ab09049 | 12488 | create_cus_hash_table (dwarf2_per_objfile, cu, *dwo_file, |
18a8505e | 12489 | dwo_file->sections.info, dwo_file->cus); |
3019eac3 | 12490 | |
263db9a1 | 12491 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12492 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12493 | |
b4f54984 | 12494 | if (dwarf_read_debug) |
80626a55 DE |
12495 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12496 | ||
263db9a1 | 12497 | return dwo_file.release (); |
3019eac3 DE |
12498 | } |
12499 | ||
80626a55 | 12500 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12501 | size of each of the DWP debugging sections common to version 1 and 2 that |
12502 | we are interested in. */ | |
3019eac3 | 12503 | |
80626a55 | 12504 | static void |
73869dc2 DE |
12505 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12506 | void *dwp_file_ptr) | |
3019eac3 | 12507 | { |
9a3c8263 | 12508 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12509 | const struct dwop_section_names *names = &dwop_section_names; |
12510 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12511 | |
80626a55 | 12512 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12513 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12514 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12515 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12516 | |
80626a55 DE |
12517 | /* Look for specific sections that we need. */ |
12518 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12519 | { | |
049412e3 | 12520 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12521 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12522 | } |
12523 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12524 | { | |
049412e3 | 12525 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12526 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12527 | } |
12528 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12529 | { | |
049412e3 | 12530 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12531 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12532 | } |
12533 | } | |
3019eac3 | 12534 | |
73869dc2 DE |
12535 | /* This function is mapped across the sections and remembers the offset and |
12536 | size of each of the DWP version 2 debugging sections that we are interested | |
12537 | in. This is split into a separate function because we don't know if we | |
12538 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12539 | ||
12540 | static void | |
12541 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12542 | { | |
9a3c8263 | 12543 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12544 | const struct dwop_section_names *names = &dwop_section_names; |
12545 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12546 | ||
12547 | /* Record the ELF section number for later lookup: this is what the | |
12548 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12549 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12550 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12551 | ||
12552 | /* Look for specific sections that we need. */ | |
12553 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12554 | { | |
049412e3 | 12555 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12556 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12557 | } |
12558 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12559 | { | |
049412e3 | 12560 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12561 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12562 | } |
12563 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12564 | { | |
049412e3 | 12565 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12566 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12567 | } |
12568 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12569 | { | |
049412e3 | 12570 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12571 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12572 | } |
12573 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12574 | { | |
049412e3 | 12575 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12576 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12577 | } |
12578 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12579 | { | |
049412e3 | 12580 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12581 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12582 | } |
12583 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12584 | { | |
049412e3 | 12585 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12586 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12587 | } |
12588 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12589 | { | |
049412e3 | 12590 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12591 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12592 | } |
12593 | } | |
12594 | ||
80626a55 | 12595 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12596 | |
80626a55 DE |
12597 | static hashval_t |
12598 | hash_dwp_loaded_cutus (const void *item) | |
12599 | { | |
9a3c8263 | 12600 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12601 | |
80626a55 DE |
12602 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12603 | return dwo_unit->signature; | |
3019eac3 DE |
12604 | } |
12605 | ||
80626a55 | 12606 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12607 | |
80626a55 DE |
12608 | static int |
12609 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12610 | { |
9a3c8263 SM |
12611 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12612 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12613 | |
80626a55 DE |
12614 | return dua->signature == dub->signature; |
12615 | } | |
3019eac3 | 12616 | |
80626a55 | 12617 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12618 | |
48b490f2 | 12619 | static htab_up |
298e9637 | 12620 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12621 | { |
48b490f2 TT |
12622 | return htab_up (htab_create_alloc (3, |
12623 | hash_dwp_loaded_cutus, | |
12624 | eq_dwp_loaded_cutus, | |
12625 | NULL, xcalloc, xfree)); | |
80626a55 | 12626 | } |
3019eac3 | 12627 | |
ab5088bf DE |
12628 | /* Try to open DWP file FILE_NAME. |
12629 | The result is the bfd handle of the file. | |
12630 | If there is a problem finding or opening the file, return NULL. | |
12631 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12632 | same as symfile_bfd_open. */ | |
12633 | ||
192b62ce | 12634 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12635 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12636 | const char *file_name) | |
ab5088bf | 12637 | { |
ed2dc618 SM |
12638 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
12639 | 1 /*is_dwp*/, | |
192b62ce | 12640 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12641 | if (abfd != NULL) |
12642 | return abfd; | |
12643 | ||
12644 | /* Work around upstream bug 15652. | |
12645 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12646 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12647 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12648 | of the executable's path may have discarded the needed info. | |
12649 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12650 | .gnu_debuglink, but that doesn't exist yet.] | |
12651 | Strip the directory from FILE_NAME and search again. */ | |
12652 | if (*debug_file_directory != '\0') | |
12653 | { | |
12654 | /* Don't implicitly search the current directory here. | |
12655 | If the user wants to search "." to handle this case, | |
12656 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
12657 | return try_open_dwop_file (dwarf2_per_objfile, |
12658 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
12659 | 0 /*search_cwd*/); |
12660 | } | |
12661 | ||
12662 | return NULL; | |
ab5088bf DE |
12663 | } |
12664 | ||
80626a55 DE |
12665 | /* Initialize the use of the DWP file for the current objfile. |
12666 | By convention the name of the DWP file is ${objfile}.dwp. | |
12667 | The result is NULL if it can't be found. */ | |
a766d390 | 12668 | |
400174b1 | 12669 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 12670 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
12671 | { |
12672 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12673 | |
82bf32bc JK |
12674 | /* Try to find first .dwp for the binary file before any symbolic links |
12675 | resolving. */ | |
6c447423 DE |
12676 | |
12677 | /* If the objfile is a debug file, find the name of the real binary | |
12678 | file and get the name of dwp file from there. */ | |
d721ba37 | 12679 | std::string dwp_name; |
6c447423 DE |
12680 | if (objfile->separate_debug_objfile_backlink != NULL) |
12681 | { | |
12682 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12683 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12684 | |
d721ba37 | 12685 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12686 | } |
12687 | else | |
d721ba37 PA |
12688 | dwp_name = objfile->original_name; |
12689 | ||
12690 | dwp_name += ".dwp"; | |
80626a55 | 12691 | |
ed2dc618 | 12692 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12693 | if (dbfd == NULL |
12694 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12695 | { | |
12696 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12697 | dwp_name = objfile_name (objfile); |
12698 | dwp_name += ".dwp"; | |
ed2dc618 | 12699 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12700 | } |
12701 | ||
80626a55 DE |
12702 | if (dbfd == NULL) |
12703 | { | |
b4f54984 | 12704 | if (dwarf_read_debug) |
d721ba37 | 12705 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12706 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12707 | } |
400174b1 TT |
12708 | |
12709 | const char *name = bfd_get_filename (dbfd.get ()); | |
12710 | std::unique_ptr<struct dwp_file> dwp_file | |
12711 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12712 | |
0a0f4c01 | 12713 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 12714 | dwp_file->elf_sections = |
5989a64e | 12715 | OBSTACK_CALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
80626a55 DE |
12716 | dwp_file->num_sections, asection *); |
12717 | ||
400174b1 TT |
12718 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12719 | dwarf2_locate_common_dwp_sections, | |
12720 | dwp_file.get ()); | |
80626a55 | 12721 | |
400174b1 TT |
12722 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12723 | 0); | |
80626a55 | 12724 | |
400174b1 TT |
12725 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12726 | 1); | |
80626a55 | 12727 | |
73869dc2 | 12728 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12729 | if (dwp_file->cus && dwp_file->tus |
12730 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12731 | { |
12732 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12733 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12734 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12735 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12736 | " TU version %s [in DWP file %s]"), | |
12737 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12738 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12739 | } |
08302ed2 DE |
12740 | |
12741 | if (dwp_file->cus) | |
12742 | dwp_file->version = dwp_file->cus->version; | |
12743 | else if (dwp_file->tus) | |
12744 | dwp_file->version = dwp_file->tus->version; | |
12745 | else | |
12746 | dwp_file->version = 2; | |
73869dc2 DE |
12747 | |
12748 | if (dwp_file->version == 2) | |
400174b1 TT |
12749 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12750 | dwarf2_locate_v2_dwp_sections, | |
12751 | dwp_file.get ()); | |
73869dc2 | 12752 | |
298e9637 SM |
12753 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12754 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12755 | |
b4f54984 | 12756 | if (dwarf_read_debug) |
80626a55 DE |
12757 | { |
12758 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12759 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12760 | " %s CUs, %s TUs\n", |
12761 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12762 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12763 | } |
12764 | ||
12765 | return dwp_file; | |
3019eac3 | 12766 | } |
c906108c | 12767 | |
ab5088bf DE |
12768 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12769 | ||
12770 | static struct dwp_file * | |
ed2dc618 | 12771 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf | 12772 | { |
5989a64e | 12773 | if (! dwarf2_per_objfile->per_bfd->dwp_checked) |
ab5088bf | 12774 | { |
5989a64e | 12775 | dwarf2_per_objfile->per_bfd->dwp_file |
ed2dc618 | 12776 | = open_and_init_dwp_file (dwarf2_per_objfile); |
5989a64e | 12777 | dwarf2_per_objfile->per_bfd->dwp_checked = 1; |
ab5088bf | 12778 | } |
5989a64e | 12779 | return dwarf2_per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
12780 | } |
12781 | ||
80626a55 DE |
12782 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12783 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12784 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12785 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12786 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12787 | ||
12788 | This is called, for example, when wanting to read a variable with a | |
12789 | complex location. Therefore we don't want to do file i/o for every call. | |
12790 | Therefore we don't want to look for a DWO file on every call. | |
12791 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12792 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12793 | for a DWO file. | |
12794 | ||
1c658ad5 | 12795 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12796 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12797 | |
3019eac3 | 12798 | static struct dwo_unit * |
4ab09049 | 12799 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 12800 | ULONGEST signature, int is_debug_types) |
3019eac3 | 12801 | { |
4ab09049 | 12802 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 12803 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
12804 | const char *kind = is_debug_types ? "TU" : "CU"; |
12805 | void **dwo_file_slot; | |
3019eac3 | 12806 | struct dwo_file *dwo_file; |
80626a55 | 12807 | struct dwp_file *dwp_file; |
cb1df416 | 12808 | |
6a506a2d DE |
12809 | /* First see if there's a DWP file. |
12810 | If we have a DWP file but didn't find the DWO inside it, don't | |
12811 | look for the original DWO file. It makes gdb behave differently | |
12812 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12813 | |
ed2dc618 | 12814 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 12815 | if (dwp_file != NULL) |
cf2c3c16 | 12816 | { |
80626a55 DE |
12817 | const struct dwp_hash_table *dwp_htab = |
12818 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12819 | ||
12820 | if (dwp_htab != NULL) | |
12821 | { | |
12822 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 12823 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 12824 | signature, is_debug_types); |
80626a55 DE |
12825 | |
12826 | if (dwo_cutu != NULL) | |
12827 | { | |
b4f54984 | 12828 | if (dwarf_read_debug) |
80626a55 DE |
12829 | { |
12830 | fprintf_unfiltered (gdb_stdlog, | |
12831 | "Virtual DWO %s %s found: @%s\n", | |
12832 | kind, hex_string (signature), | |
12833 | host_address_to_string (dwo_cutu)); | |
12834 | } | |
12835 | return dwo_cutu; | |
12836 | } | |
12837 | } | |
12838 | } | |
6a506a2d | 12839 | else |
80626a55 | 12840 | { |
6a506a2d | 12841 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12842 | |
ed2dc618 SM |
12843 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12844 | dwo_name, comp_dir); | |
6a506a2d | 12845 | if (*dwo_file_slot == NULL) |
80626a55 | 12846 | { |
6a506a2d | 12847 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 12848 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 12849 | } |
6a506a2d | 12850 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12851 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12852 | |
6a506a2d | 12853 | if (dwo_file != NULL) |
19c3d4c9 | 12854 | { |
6a506a2d DE |
12855 | struct dwo_unit *dwo_cutu = NULL; |
12856 | ||
12857 | if (is_debug_types && dwo_file->tus) | |
12858 | { | |
12859 | struct dwo_unit find_dwo_cutu; | |
12860 | ||
12861 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12862 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12863 | dwo_cutu |
b0b6a987 TT |
12864 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12865 | &find_dwo_cutu); | |
6a506a2d | 12866 | } |
33c5cd75 | 12867 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12868 | { |
33c5cd75 DB |
12869 | struct dwo_unit find_dwo_cutu; |
12870 | ||
12871 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12872 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12873 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12874 | &find_dwo_cutu); |
6a506a2d DE |
12875 | } |
12876 | ||
12877 | if (dwo_cutu != NULL) | |
12878 | { | |
b4f54984 | 12879 | if (dwarf_read_debug) |
6a506a2d DE |
12880 | { |
12881 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
12882 | kind, dwo_name, hex_string (signature), | |
12883 | host_address_to_string (dwo_cutu)); | |
12884 | } | |
12885 | return dwo_cutu; | |
80626a55 DE |
12886 | } |
12887 | } | |
2e276125 | 12888 | } |
9cdd5dbd | 12889 | |
80626a55 DE |
12890 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12891 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12892 | correctly to find the file. */ | |
12893 | ||
b4f54984 | 12894 | if (dwarf_read_debug) |
80626a55 DE |
12895 | { |
12896 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
12897 | kind, dwo_name, hex_string (signature)); | |
12898 | } | |
3019eac3 | 12899 | |
6656a72d DE |
12900 | /* This is a warning and not a complaint because it can be caused by |
12901 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12902 | { |
12903 | /* Print the name of the DWP file if we looked there, helps the user | |
12904 | better diagnose the problem. */ | |
791afaa2 | 12905 | std::string dwp_text; |
43942612 DE |
12906 | |
12907 | if (dwp_file != NULL) | |
791afaa2 TT |
12908 | dwp_text = string_printf (" [in DWP file %s]", |
12909 | lbasename (dwp_file->name)); | |
43942612 | 12910 | |
9d8780f0 | 12911 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 12912 | " [in module %s]"), |
4ab09049 SM |
12913 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
12914 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 12915 | } |
3019eac3 | 12916 | return NULL; |
5fb290d7 DJ |
12917 | } |
12918 | ||
80626a55 DE |
12919 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12920 | See lookup_dwo_cutu_unit for details. */ | |
12921 | ||
12922 | static struct dwo_unit * | |
4ab09049 | 12923 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
12924 | ULONGEST signature) |
12925 | { | |
4ab09049 SM |
12926 | gdb_assert (!cu->per_cu->is_debug_types); |
12927 | ||
12928 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
12929 | } |
12930 | ||
12931 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12932 | See lookup_dwo_cutu_unit for details. */ | |
12933 | ||
12934 | static struct dwo_unit * | |
4ab09049 | 12935 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 12936 | { |
4ab09049 SM |
12937 | gdb_assert (cu->per_cu->is_debug_types); |
12938 | ||
12939 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
12940 | ||
12941 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
12942 | } |
12943 | ||
89e63ee4 DE |
12944 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12945 | ||
12946 | static int | |
12947 | queue_and_load_dwo_tu (void **slot, void *info) | |
12948 | { | |
12949 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 12950 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 12951 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 12952 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
12953 | |
12954 | if (sig_type != NULL) | |
12955 | { | |
12956 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
12957 | ||
12958 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
12959 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12960 | while processing PER_CU. */ | |
120ce1b5 | 12961 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
12962 | load_full_type_unit (sig_cu, cu->per_objfile); |
12963 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
12964 | } |
12965 | ||
12966 | return 1; | |
12967 | } | |
12968 | ||
1b555f17 | 12969 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
12970 | The DWO may have the only definition of the type, though it may not be |
12971 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12972 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12973 | ||
12974 | static void | |
1b555f17 | 12975 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
12976 | { |
12977 | struct dwo_unit *dwo_unit; | |
12978 | struct dwo_file *dwo_file; | |
12979 | ||
1b555f17 SM |
12980 | gdb_assert (cu != nullptr); |
12981 | gdb_assert (!cu->per_cu->is_debug_types); | |
12982 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 12983 | |
1b555f17 | 12984 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
12985 | gdb_assert (dwo_unit != NULL); |
12986 | ||
12987 | dwo_file = dwo_unit->dwo_file; | |
12988 | if (dwo_file->tus != NULL) | |
1b555f17 | 12989 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
12990 | } |
12991 | ||
3019eac3 | 12992 | /* Read in various DIEs. */ |
348e048f | 12993 | |
d389af10 | 12994 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12995 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12996 | already referenced by DW_AT_abstract_origin from the children of the | |
12997 | current DIE. */ | |
d389af10 JK |
12998 | |
12999 | static void | |
13000 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13001 | { | |
13002 | struct die_info *child_die; | |
791afaa2 | 13003 | sect_offset *offsetp; |
d389af10 JK |
13004 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13005 | struct die_info *origin_die; | |
13006 | /* Iterator of the ORIGIN_DIE children. */ | |
13007 | struct die_info *origin_child_die; | |
d389af10 | 13008 | struct attribute *attr; |
cd02d79d PA |
13009 | struct dwarf2_cu *origin_cu; |
13010 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13011 | |
13012 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13013 | if (!attr) | |
13014 | return; | |
13015 | ||
cd02d79d PA |
13016 | /* Note that following die references may follow to a die in a |
13017 | different cu. */ | |
13018 | ||
13019 | origin_cu = cu; | |
13020 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13021 | ||
13022 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13023 | symbols in. */ | |
13024 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13025 | origin_cu->list_in_scope = cu->list_in_scope; | |
13026 | ||
edb3359d DJ |
13027 | if (die->tag != origin_die->tag |
13028 | && !(die->tag == DW_TAG_inlined_subroutine | |
13029 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13030 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13031 | sect_offset_str (die->sect_off), |
13032 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13033 | |
791afaa2 | 13034 | std::vector<sect_offset> offsets; |
d389af10 | 13035 | |
3ea89b92 PMR |
13036 | for (child_die = die->child; |
13037 | child_die && child_die->tag; | |
436c571c | 13038 | child_die = child_die->sibling) |
3ea89b92 PMR |
13039 | { |
13040 | struct die_info *child_origin_die; | |
13041 | struct dwarf2_cu *child_origin_cu; | |
13042 | ||
13043 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13044 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13045 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13046 | present in the abstract instance but not referenced in the concrete | |
13047 | one. */ | |
216f72a1 JK |
13048 | if (child_die->tag == DW_TAG_call_site |
13049 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13050 | continue; |
13051 | ||
c38f313d DJ |
13052 | /* For each CHILD_DIE, find the corresponding child of |
13053 | ORIGIN_DIE. If there is more than one layer of | |
13054 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13055 | but GCC versions at least through 4.4 generate this (GCC PR | |
13056 | 40573). */ | |
3ea89b92 PMR |
13057 | child_origin_die = child_die; |
13058 | child_origin_cu = cu; | |
c38f313d DJ |
13059 | while (1) |
13060 | { | |
cd02d79d PA |
13061 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13062 | child_origin_cu); | |
c38f313d DJ |
13063 | if (attr == NULL) |
13064 | break; | |
cd02d79d PA |
13065 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13066 | &child_origin_cu); | |
c38f313d DJ |
13067 | } |
13068 | ||
d389af10 JK |
13069 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13070 | counterpart may exist. */ | |
c38f313d | 13071 | if (child_origin_die != child_die) |
d389af10 | 13072 | { |
edb3359d DJ |
13073 | if (child_die->tag != child_origin_die->tag |
13074 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13075 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13076 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13077 | "different tags"), |
9d8780f0 SM |
13078 | sect_offset_str (child_die->sect_off), |
13079 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13080 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13081 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13082 | "different parents"), |
9d8780f0 SM |
13083 | sect_offset_str (child_die->sect_off), |
13084 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13085 | else |
791afaa2 | 13086 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13087 | } |
d389af10 | 13088 | } |
791afaa2 TT |
13089 | std::sort (offsets.begin (), offsets.end ()); |
13090 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13091 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13092 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13093 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13094 | "to DIE %s as their abstract origin"), |
13095 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13096 | |
791afaa2 | 13097 | offsetp = offsets.data (); |
d389af10 JK |
13098 | origin_child_die = origin_die->child; |
13099 | while (origin_child_die && origin_child_die->tag) | |
13100 | { | |
13101 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13102 | while (offsetp < offsets_end |
9c541725 | 13103 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13104 | offsetp++; |
b64f50a1 | 13105 | if (offsetp >= offsets_end |
9c541725 | 13106 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13107 | { |
adde2bff DE |
13108 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13109 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13110 | This can happen with mutually referenced abstract_origins. | |
13111 | PR 16581. */ | |
13112 | if (!origin_child_die->in_process) | |
13113 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13114 | } |
436c571c | 13115 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13116 | } |
cd02d79d | 13117 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13118 | |
13119 | if (cu != origin_cu) | |
13120 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13121 | } |
13122 | ||
c906108c | 13123 | static void |
e7c27a73 | 13124 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13125 | { |
5e22e966 | 13126 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13127 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13128 | struct context_stack *newobj; |
c906108c SS |
13129 | CORE_ADDR lowpc; |
13130 | CORE_ADDR highpc; | |
13131 | struct die_info *child_die; | |
edb3359d | 13132 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13133 | const char *name; |
e142c38c | 13134 | CORE_ADDR baseaddr; |
801e3a5b | 13135 | struct block *block; |
edb3359d | 13136 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13137 | std::vector<struct symbol *> template_args; |
34eaf542 | 13138 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13139 | |
13140 | if (inlined_func) | |
13141 | { | |
13142 | /* If we do not have call site information, we can't show the | |
13143 | caller of this inlined function. That's too confusing, so | |
13144 | only use the scope for local variables. */ | |
13145 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13146 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13147 | if (call_line == NULL || call_file == NULL) | |
13148 | { | |
13149 | read_lexical_block_scope (die, cu); | |
13150 | return; | |
13151 | } | |
13152 | } | |
c906108c | 13153 | |
b3b3bada | 13154 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13155 | |
94af9270 | 13156 | name = dwarf2_name (die, cu); |
c906108c | 13157 | |
e8d05480 JB |
13158 | /* Ignore functions with missing or empty names. These are actually |
13159 | illegal according to the DWARF standard. */ | |
13160 | if (name == NULL) | |
13161 | { | |
b98664d3 | 13162 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13163 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13164 | return; |
13165 | } | |
13166 | ||
13167 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13168 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13169 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13170 | { |
ae4d0c03 PM |
13171 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13172 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13173 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13174 | "for subprogram DIE at %s"), |
13175 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13176 | return; |
13177 | } | |
c906108c | 13178 | |
3e29f34a MR |
13179 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13180 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13181 | |
34eaf542 TT |
13182 | /* If we have any template arguments, then we must allocate a |
13183 | different sort of symbol. */ | |
436c571c | 13184 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13185 | { |
13186 | if (child_die->tag == DW_TAG_template_type_param | |
13187 | || child_die->tag == DW_TAG_template_value_param) | |
13188 | { | |
8c14c3a3 | 13189 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13190 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13191 | break; |
13192 | } | |
13193 | } | |
13194 | ||
c24bdb02 | 13195 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13196 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13197 | (struct symbol *) templ_func); | |
4c2df51b | 13198 | |
81873cc8 | 13199 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13200 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13201 | cu->language); |
13202 | ||
4cecd739 DJ |
13203 | /* If there is a location expression for DW_AT_frame_base, record |
13204 | it. */ | |
e142c38c | 13205 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13206 | if (attr != nullptr) |
fe978cb0 | 13207 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13208 | |
63e43d3a PMR |
13209 | /* If there is a location for the static link, record it. */ |
13210 | newobj->static_link = NULL; | |
13211 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13212 | if (attr != nullptr) |
63e43d3a | 13213 | { |
224c3ddb SM |
13214 | newobj->static_link |
13215 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13216 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13217 | cu->addr_type ()); |
63e43d3a PMR |
13218 | } |
13219 | ||
c24bdb02 | 13220 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13221 | |
639d11d3 | 13222 | if (die->child != NULL) |
c906108c | 13223 | { |
639d11d3 | 13224 | child_die = die->child; |
c906108c SS |
13225 | while (child_die && child_die->tag) |
13226 | { | |
34eaf542 TT |
13227 | if (child_die->tag == DW_TAG_template_type_param |
13228 | || child_die->tag == DW_TAG_template_value_param) | |
13229 | { | |
13230 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13231 | ||
f1078f66 | 13232 | if (arg != NULL) |
2f4732b0 | 13233 | template_args.push_back (arg); |
34eaf542 TT |
13234 | } |
13235 | else | |
13236 | process_die (child_die, cu); | |
436c571c | 13237 | child_die = child_die->sibling; |
c906108c SS |
13238 | } |
13239 | } | |
13240 | ||
d389af10 JK |
13241 | inherit_abstract_dies (die, cu); |
13242 | ||
4a811a97 UW |
13243 | /* If we have a DW_AT_specification, we might need to import using |
13244 | directives from the context of the specification DIE. See the | |
13245 | comment in determine_prefix. */ | |
13246 | if (cu->language == language_cplus | |
13247 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13248 | { | |
13249 | struct dwarf2_cu *spec_cu = cu; | |
13250 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13251 | ||
13252 | while (spec_die) | |
13253 | { | |
13254 | child_die = spec_die->child; | |
13255 | while (child_die && child_die->tag) | |
13256 | { | |
13257 | if (child_die->tag == DW_TAG_imported_module) | |
13258 | process_die (child_die, spec_cu); | |
436c571c | 13259 | child_die = child_die->sibling; |
4a811a97 UW |
13260 | } |
13261 | ||
13262 | /* In some cases, GCC generates specification DIEs that | |
13263 | themselves contain DW_AT_specification attributes. */ | |
13264 | spec_die = die_specification (spec_die, &spec_cu); | |
13265 | } | |
13266 | } | |
13267 | ||
c24bdb02 | 13268 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13269 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13270 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13271 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13272 | |
df8a16a1 | 13273 | /* For C++, set the block's scope. */ |
45280282 IB |
13274 | if ((cu->language == language_cplus |
13275 | || cu->language == language_fortran | |
c44af4eb TT |
13276 | || cu->language == language_d |
13277 | || cu->language == language_rust) | |
4d4ec4e5 | 13278 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13279 | block_set_scope (block, determine_prefix (die, cu), |
13280 | &objfile->objfile_obstack); | |
df8a16a1 | 13281 | |
801e3a5b JB |
13282 | /* If we have address ranges, record them. */ |
13283 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13284 | |
a60f3166 | 13285 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13286 | |
34eaf542 | 13287 | /* Attach template arguments to function. */ |
2f4732b0 | 13288 | if (!template_args.empty ()) |
34eaf542 TT |
13289 | { |
13290 | gdb_assert (templ_func != NULL); | |
13291 | ||
2f4732b0 | 13292 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13293 | templ_func->template_arguments |
8d749320 SM |
13294 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13295 | templ_func->n_template_arguments); | |
34eaf542 | 13296 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13297 | template_args.data (), |
34eaf542 | 13298 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13299 | |
13300 | /* Make sure that the symtab is set on the new symbols. Even | |
13301 | though they don't appear in this symtab directly, other parts | |
13302 | of gdb assume that symbols do, and this is reasonably | |
13303 | true. */ | |
8634679f | 13304 | for (symbol *sym : template_args) |
3e1d3d8c | 13305 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13306 | } |
13307 | ||
208d8187 JB |
13308 | /* In C++, we can have functions nested inside functions (e.g., when |
13309 | a function declares a class that has methods). This means that | |
13310 | when we finish processing a function scope, we may need to go | |
13311 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13312 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13313 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13314 | |
921e78cf JB |
13315 | /* If we've finished processing a top-level function, subsequent |
13316 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13317 | if (cu->get_builder ()->outermost_context_p ()) |
13318 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13319 | } |
13320 | ||
13321 | /* Process all the DIES contained within a lexical block scope. Start | |
13322 | a new scope, process the dies, and then close the scope. */ | |
13323 | ||
13324 | static void | |
e7c27a73 | 13325 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13326 | { |
5e22e966 | 13327 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13328 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13329 | CORE_ADDR lowpc, highpc; |
13330 | struct die_info *child_die; | |
e142c38c DJ |
13331 | CORE_ADDR baseaddr; |
13332 | ||
b3b3bada | 13333 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13334 | |
13335 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13336 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13337 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13338 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13339 | describe ranges. */ |
e385593e JK |
13340 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13341 | { | |
13342 | case PC_BOUNDS_NOT_PRESENT: | |
13343 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13344 | there was no wrapping by that DW_TAG_lexical_block. | |
13345 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13346 | for (child_die = die->child; | |
13347 | child_die != NULL && child_die->tag; | |
436c571c | 13348 | child_die = child_die->sibling) |
4f7bc5ed TT |
13349 | { |
13350 | /* We might already be processing this DIE. This can happen | |
13351 | in an unusual circumstance -- where a subroutine A | |
13352 | appears lexically in another subroutine B, but A actually | |
13353 | inlines B. The recursion is broken here, rather than in | |
13354 | inherit_abstract_dies, because it seems better to simply | |
13355 | drop concrete children here. */ | |
13356 | if (!child_die->in_process) | |
13357 | process_die (child_die, cu); | |
13358 | } | |
e385593e JK |
13359 | return; |
13360 | case PC_BOUNDS_INVALID: | |
13361 | return; | |
13362 | } | |
3e29f34a MR |
13363 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13364 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13365 | |
c24bdb02 | 13366 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13367 | if (die->child != NULL) |
c906108c | 13368 | { |
639d11d3 | 13369 | child_die = die->child; |
c906108c SS |
13370 | while (child_die && child_die->tag) |
13371 | { | |
e7c27a73 | 13372 | process_die (child_die, cu); |
436c571c | 13373 | child_die = child_die->sibling; |
c906108c SS |
13374 | } |
13375 | } | |
3ea89b92 | 13376 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13377 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13378 | |
c24bdb02 KS |
13379 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13380 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13381 | { |
801e3a5b | 13382 | struct block *block |
c24bdb02 | 13383 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13384 | cstk.start_addr, highpc); |
801e3a5b JB |
13385 | |
13386 | /* Note that recording ranges after traversing children, as we | |
13387 | do here, means that recording a parent's ranges entails | |
13388 | walking across all its children's ranges as they appear in | |
13389 | the address map, which is quadratic behavior. | |
13390 | ||
13391 | It would be nicer to record the parent's ranges before | |
13392 | traversing its children, simply overriding whatever you find | |
13393 | there. But since we don't even decide whether to create a | |
13394 | block until after we've traversed its children, that's hard | |
13395 | to do. */ | |
13396 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13397 | } |
c24bdb02 KS |
13398 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13399 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13400 | } |
13401 | ||
216f72a1 | 13402 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13403 | |
13404 | static void | |
13405 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13406 | { | |
5e22e966 | 13407 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13408 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13409 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13410 | CORE_ADDR pc, baseaddr; |
13411 | struct attribute *attr; | |
13412 | struct call_site *call_site, call_site_local; | |
13413 | void **slot; | |
13414 | int nparams; | |
13415 | struct die_info *child_die; | |
13416 | ||
b3b3bada | 13417 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13418 | |
216f72a1 JK |
13419 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13420 | if (attr == NULL) | |
13421 | { | |
13422 | /* This was a pre-DWARF-5 GNU extension alias | |
13423 | for DW_AT_call_return_pc. */ | |
13424 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13425 | } | |
96408a79 SA |
13426 | if (!attr) |
13427 | { | |
b98664d3 | 13428 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13429 | "DIE %s [in module %s]"), |
13430 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13431 | return; |
13432 | } | |
cd6c91b4 | 13433 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13434 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13435 | |
13436 | if (cu->call_site_htab == NULL) | |
13437 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13438 | NULL, &objfile->objfile_obstack, | |
13439 | hashtab_obstack_allocate, NULL); | |
13440 | call_site_local.pc = pc; | |
13441 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13442 | if (*slot != NULL) | |
13443 | { | |
b98664d3 | 13444 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13445 | "DIE %s [in module %s]"), |
13446 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13447 | objfile_name (objfile)); |
96408a79 SA |
13448 | return; |
13449 | } | |
13450 | ||
13451 | /* Count parameters at the caller. */ | |
13452 | ||
13453 | nparams = 0; | |
13454 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13455 | child_die = child_die->sibling) |
96408a79 | 13456 | { |
216f72a1 JK |
13457 | if (child_die->tag != DW_TAG_call_site_parameter |
13458 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13459 | { |
b98664d3 | 13460 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13461 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13462 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13463 | objfile_name (objfile)); |
96408a79 SA |
13464 | continue; |
13465 | } | |
13466 | ||
13467 | nparams++; | |
13468 | } | |
13469 | ||
224c3ddb SM |
13470 | call_site |
13471 | = ((struct call_site *) | |
13472 | obstack_alloc (&objfile->objfile_obstack, | |
13473 | sizeof (*call_site) | |
13474 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13475 | *slot = call_site; |
13476 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13477 | call_site->pc = pc; | |
13478 | ||
216f72a1 JK |
13479 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13480 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13481 | { |
13482 | struct die_info *func_die; | |
13483 | ||
13484 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13485 | for (func_die = die->parent; | |
13486 | func_die && func_die->tag != DW_TAG_subprogram | |
13487 | && func_die->tag != DW_TAG_subroutine_type; | |
13488 | func_die = func_die->parent); | |
13489 | ||
216f72a1 JK |
13490 | /* DW_AT_call_all_calls is a superset |
13491 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13492 | if (func_die |
216f72a1 | 13493 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13494 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13495 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13496 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13497 | { | |
13498 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13499 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13500 | both the initial caller containing the real return address PC and | |
13501 | the final callee containing the current PC of a chain of tail | |
13502 | calls do not need to have the tail call list complete. But any | |
13503 | function candidate for a virtual tail call frame searched via | |
13504 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13505 | determined unambiguously. */ | |
13506 | } | |
13507 | else | |
13508 | { | |
13509 | struct type *func_type = NULL; | |
13510 | ||
13511 | if (func_die) | |
13512 | func_type = get_die_type (func_die, cu); | |
13513 | if (func_type != NULL) | |
13514 | { | |
78134374 | 13515 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13516 | |
13517 | /* Enlist this call site to the function. */ | |
13518 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13519 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13520 | } | |
13521 | else | |
b98664d3 | 13522 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13523 | "DIE %s [in module %s]"), |
13524 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13525 | } |
13526 | } | |
13527 | ||
216f72a1 JK |
13528 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13529 | if (attr == NULL) | |
13530 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13531 | if (attr == NULL) | |
13532 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13533 | if (attr == NULL) |
216f72a1 JK |
13534 | { |
13535 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13536 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13537 | } | |
96408a79 | 13538 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13539 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13540 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13541 | else if (attr->form_is_block ()) |
96408a79 SA |
13542 | { |
13543 | struct dwarf2_locexpr_baton *dlbaton; | |
13544 | ||
8d749320 | 13545 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13546 | dlbaton->data = DW_BLOCK (attr)->data; |
13547 | dlbaton->size = DW_BLOCK (attr)->size; | |
a50264ba | 13548 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13549 | dlbaton->per_cu = cu->per_cu; |
13550 | ||
13551 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13552 | } | |
cd6c91b4 | 13553 | else if (attr->form_is_ref ()) |
96408a79 | 13554 | { |
96408a79 SA |
13555 | struct dwarf2_cu *target_cu = cu; |
13556 | struct die_info *target_die; | |
13557 | ||
ac9ec31b | 13558 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13559 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13560 | if (die_is_declaration (target_die, target_cu)) |
13561 | { | |
7d45c7c3 | 13562 | const char *target_physname; |
9112db09 JK |
13563 | |
13564 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13565 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13566 | if (target_physname == NULL) |
9112db09 | 13567 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13568 | if (target_physname == NULL) |
b98664d3 | 13569 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13570 | "physname, for referencing DIE %s [in module %s]"), |
13571 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13572 | else |
7d455152 | 13573 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13574 | } |
13575 | else | |
13576 | { | |
13577 | CORE_ADDR lowpc; | |
13578 | ||
13579 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13580 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13581 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13582 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13583 | "low pc, for referencing DIE %s [in module %s]"), |
13584 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13585 | else |
3e29f34a MR |
13586 | { |
13587 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13588 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13589 | } | |
96408a79 SA |
13590 | } |
13591 | } | |
13592 | else | |
b98664d3 | 13593 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13594 | "block nor reference, for DIE %s [in module %s]"), |
13595 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13596 | |
13597 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 13598 | call_site->per_objfile = per_objfile; |
96408a79 SA |
13599 | |
13600 | for (child_die = die->child; | |
13601 | child_die && child_die->tag; | |
436c571c | 13602 | child_die = child_die->sibling) |
96408a79 | 13603 | { |
96408a79 | 13604 | struct call_site_parameter *parameter; |
1788b2d3 | 13605 | struct attribute *loc, *origin; |
96408a79 | 13606 | |
216f72a1 JK |
13607 | if (child_die->tag != DW_TAG_call_site_parameter |
13608 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13609 | { |
13610 | /* Already printed the complaint above. */ | |
13611 | continue; | |
13612 | } | |
13613 | ||
13614 | gdb_assert (call_site->parameter_count < nparams); | |
13615 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13616 | ||
1788b2d3 JK |
13617 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13618 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13619 | register is contained in DW_AT_call_value. */ |
96408a79 | 13620 | |
24c5c679 | 13621 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13622 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13623 | if (origin == NULL) | |
13624 | { | |
13625 | /* This was a pre-DWARF-5 GNU extension alias | |
13626 | for DW_AT_call_parameter. */ | |
13627 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13628 | } | |
cd6c91b4 | 13629 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13630 | { |
1788b2d3 | 13631 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13632 | |
0826b30a | 13633 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13634 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13635 | { |
13636 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13637 | binding can be done only inside one CU. Such referenced DIE | |
13638 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13639 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13640 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13641 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13642 | objfile_name (objfile)); |
d76b7dbc JK |
13643 | continue; |
13644 | } | |
9c541725 PA |
13645 | parameter->u.param_cu_off |
13646 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13647 | } |
4fc6c0d5 | 13648 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13649 | { |
b98664d3 | 13650 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13651 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13652 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13653 | continue; |
13654 | } | |
24c5c679 | 13655 | else |
96408a79 | 13656 | { |
24c5c679 JK |
13657 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13658 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13659 | if (parameter->u.dwarf_reg != -1) | |
13660 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13661 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13662 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13663 | ¶meter->u.fb_offset)) | |
13664 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13665 | else | |
13666 | { | |
b98664d3 | 13667 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13668 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13669 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13670 | "[in module %s]"), |
9d8780f0 | 13671 | sect_offset_str (child_die->sect_off), |
9c541725 | 13672 | objfile_name (objfile)); |
24c5c679 JK |
13673 | continue; |
13674 | } | |
96408a79 SA |
13675 | } |
13676 | ||
216f72a1 JK |
13677 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13678 | if (attr == NULL) | |
13679 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13680 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13681 | { |
b98664d3 | 13682 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13683 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13684 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13685 | objfile_name (objfile)); |
96408a79 SA |
13686 | continue; |
13687 | } | |
13688 | parameter->value = DW_BLOCK (attr)->data; | |
13689 | parameter->value_size = DW_BLOCK (attr)->size; | |
13690 | ||
13691 | /* Parameters are not pre-cleared by memset above. */ | |
13692 | parameter->data_value = NULL; | |
13693 | parameter->data_value_size = 0; | |
13694 | call_site->parameter_count++; | |
13695 | ||
216f72a1 JK |
13696 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13697 | if (attr == NULL) | |
13698 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13699 | if (attr != nullptr) |
96408a79 | 13700 | { |
4fc6c0d5 | 13701 | if (!attr->form_is_block ()) |
b98664d3 | 13702 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13703 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13704 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13705 | objfile_name (objfile)); |
96408a79 SA |
13706 | else |
13707 | { | |
13708 | parameter->data_value = DW_BLOCK (attr)->data; | |
13709 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13710 | } | |
13711 | } | |
13712 | } | |
13713 | } | |
13714 | ||
71a3c369 TT |
13715 | /* Helper function for read_variable. If DIE represents a virtual |
13716 | table, then return the type of the concrete object that is | |
13717 | associated with the virtual table. Otherwise, return NULL. */ | |
13718 | ||
13719 | static struct type * | |
13720 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13721 | { | |
13722 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13723 | if (attr == NULL) | |
13724 | return NULL; | |
13725 | ||
13726 | /* Find the type DIE. */ | |
13727 | struct die_info *type_die = NULL; | |
13728 | struct dwarf2_cu *type_cu = cu; | |
13729 | ||
cd6c91b4 | 13730 | if (attr->form_is_ref ()) |
71a3c369 TT |
13731 | type_die = follow_die_ref (die, attr, &type_cu); |
13732 | if (type_die == NULL) | |
13733 | return NULL; | |
13734 | ||
13735 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13736 | return NULL; | |
13737 | return die_containing_type (type_die, type_cu); | |
13738 | } | |
13739 | ||
13740 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13741 | ||
13742 | static void | |
13743 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13744 | { | |
13745 | struct rust_vtable_symbol *storage = NULL; | |
13746 | ||
13747 | if (cu->language == language_rust) | |
13748 | { | |
13749 | struct type *containing_type = rust_containing_type (die, cu); | |
13750 | ||
13751 | if (containing_type != NULL) | |
13752 | { | |
5e22e966 | 13753 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 13754 | |
8c14c3a3 | 13755 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 13756 | storage->concrete_type = containing_type; |
cf724bc9 | 13757 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13758 | } |
13759 | } | |
13760 | ||
e4a62c65 TV |
13761 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13762 | struct attribute *abstract_origin | |
13763 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13764 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13765 | if (res == NULL && loc && abstract_origin) | |
13766 | { | |
13767 | /* We have a variable without a name, but with a location and an abstract | |
13768 | origin. This may be a concrete instance of an abstract variable | |
13769 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13770 | later. */ | |
13771 | struct dwarf2_cu *origin_cu = cu; | |
13772 | struct die_info *origin_die | |
13773 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
13774 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13775 | per_objfile->per_bfd->abstract_to_concrete | |
13776 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 13777 | } |
71a3c369 TT |
13778 | } |
13779 | ||
43988095 JK |
13780 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13781 | reading .debug_rnglists. | |
13782 | Callback's type should be: | |
13783 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13784 | Return true if the attributes are present and valid, otherwise, | |
13785 | return false. */ | |
13786 | ||
13787 | template <typename Callback> | |
13788 | static bool | |
13789 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13790 | Callback &&callback) | |
13791 | { | |
5e22e966 | 13792 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 13793 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 13794 | bfd *obfd = objfile->obfd; |
43988095 | 13795 | /* Base address selection entry. */ |
2b24b6e4 | 13796 | gdb::optional<CORE_ADDR> base; |
43988095 | 13797 | const gdb_byte *buffer; |
43988095 JK |
13798 | CORE_ADDR baseaddr; |
13799 | bool overflow = false; | |
13800 | ||
43988095 JK |
13801 | base = cu->base_address; |
13802 | ||
5989a64e SM |
13803 | dwarf2_per_objfile->per_bfd->rnglists.read (objfile); |
13804 | if (offset >= dwarf2_per_objfile->per_bfd->rnglists.size) | |
43988095 | 13805 | { |
b98664d3 | 13806 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13807 | offset); |
13808 | return false; | |
13809 | } | |
5989a64e | 13810 | buffer = dwarf2_per_objfile->per_bfd->rnglists.buffer + offset; |
43988095 | 13811 | |
b3b3bada | 13812 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13813 | |
13814 | while (1) | |
13815 | { | |
7814882a JK |
13816 | /* Initialize it due to a false compiler warning. */ |
13817 | CORE_ADDR range_beginning = 0, range_end = 0; | |
5989a64e SM |
13818 | const gdb_byte *buf_end = (dwarf2_per_objfile->per_bfd->rnglists.buffer |
13819 | + dwarf2_per_objfile->per_bfd->rnglists.size); | |
43988095 JK |
13820 | unsigned int bytes_read; |
13821 | ||
13822 | if (buffer == buf_end) | |
13823 | { | |
13824 | overflow = true; | |
13825 | break; | |
13826 | } | |
13827 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13828 | switch (rlet) | |
13829 | { | |
13830 | case DW_RLE_end_of_list: | |
13831 | break; | |
13832 | case DW_RLE_base_address: | |
13833 | if (buffer + cu->header.addr_size > buf_end) | |
13834 | { | |
13835 | overflow = true; | |
13836 | break; | |
13837 | } | |
c8a7a66f | 13838 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13839 | buffer += bytes_read; |
13840 | break; | |
13841 | case DW_RLE_start_length: | |
13842 | if (buffer + cu->header.addr_size > buf_end) | |
13843 | { | |
13844 | overflow = true; | |
13845 | break; | |
13846 | } | |
c8a7a66f TT |
13847 | range_beginning = cu->header.read_address (obfd, buffer, |
13848 | &bytes_read); | |
43988095 JK |
13849 | buffer += bytes_read; |
13850 | range_end = (range_beginning | |
13851 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13852 | buffer += bytes_read; | |
13853 | if (buffer > buf_end) | |
13854 | { | |
13855 | overflow = true; | |
13856 | break; | |
13857 | } | |
13858 | break; | |
13859 | case DW_RLE_offset_pair: | |
13860 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13861 | buffer += bytes_read; | |
13862 | if (buffer > buf_end) | |
13863 | { | |
13864 | overflow = true; | |
13865 | break; | |
13866 | } | |
13867 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13868 | buffer += bytes_read; | |
13869 | if (buffer > buf_end) | |
13870 | { | |
13871 | overflow = true; | |
13872 | break; | |
13873 | } | |
13874 | break; | |
13875 | case DW_RLE_start_end: | |
13876 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13877 | { | |
13878 | overflow = true; | |
13879 | break; | |
13880 | } | |
c8a7a66f TT |
13881 | range_beginning = cu->header.read_address (obfd, buffer, |
13882 | &bytes_read); | |
43988095 | 13883 | buffer += bytes_read; |
c8a7a66f | 13884 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13885 | buffer += bytes_read; |
13886 | break; | |
13887 | default: | |
b98664d3 | 13888 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13889 | return false; |
13890 | } | |
13891 | if (rlet == DW_RLE_end_of_list || overflow) | |
13892 | break; | |
13893 | if (rlet == DW_RLE_base_address) | |
13894 | continue; | |
13895 | ||
2b24b6e4 | 13896 | if (!base.has_value ()) |
43988095 JK |
13897 | { |
13898 | /* We have no valid base address for the ranges | |
13899 | data. */ | |
b98664d3 | 13900 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13901 | return false; |
13902 | } | |
13903 | ||
13904 | if (range_beginning > range_end) | |
13905 | { | |
13906 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13907 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13908 | return false; |
13909 | } | |
13910 | ||
13911 | /* Empty range entries have no effect. */ | |
13912 | if (range_beginning == range_end) | |
13913 | continue; | |
13914 | ||
2b24b6e4 TT |
13915 | range_beginning += *base; |
13916 | range_end += *base; | |
43988095 JK |
13917 | |
13918 | /* A not-uncommon case of bad debug info. | |
13919 | Don't pollute the addrmap with bad data. */ | |
13920 | if (range_beginning + baseaddr == 0 | |
5989a64e | 13921 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
43988095 | 13922 | { |
b98664d3 | 13923 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
13924 | " [in module %s]"), objfile_name (objfile)); |
13925 | continue; | |
13926 | } | |
13927 | ||
13928 | callback (range_beginning, range_end); | |
13929 | } | |
13930 | ||
13931 | if (overflow) | |
13932 | { | |
b98664d3 | 13933 | complaint (_("Offset %d is not terminated " |
43988095 JK |
13934 | "for DW_AT_ranges attribute"), |
13935 | offset); | |
13936 | return false; | |
13937 | } | |
13938 | ||
13939 | return true; | |
13940 | } | |
13941 | ||
13942 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
13943 | Callback's type should be: | |
13944 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 13945 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 13946 | |
43988095 | 13947 | template <typename Callback> |
43039443 | 13948 | static int |
5f46c5a5 | 13949 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 13950 | Callback &&callback) |
43039443 | 13951 | { |
5e22e966 SM |
13952 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13953 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
13954 | struct comp_unit_head *cu_header = &cu->header; |
13955 | bfd *obfd = objfile->obfd; | |
13956 | unsigned int addr_size = cu_header->addr_size; | |
13957 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
13958 | /* Base address selection entry. */ | |
2b24b6e4 | 13959 | gdb::optional<CORE_ADDR> base; |
43039443 | 13960 | unsigned int dummy; |
d521ce57 | 13961 | const gdb_byte *buffer; |
ff013f42 | 13962 | CORE_ADDR baseaddr; |
43039443 | 13963 | |
43988095 JK |
13964 | if (cu_header->version >= 5) |
13965 | return dwarf2_rnglists_process (offset, cu, callback); | |
13966 | ||
d00adf39 | 13967 | base = cu->base_address; |
43039443 | 13968 | |
5e22e966 SM |
13969 | per_objfile->per_bfd->ranges.read (objfile); |
13970 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 13971 | { |
b98664d3 | 13972 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
13973 | offset); |
13974 | return 0; | |
13975 | } | |
5e22e966 | 13976 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 13977 | |
b3b3bada | 13978 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 13979 | |
43039443 JK |
13980 | while (1) |
13981 | { | |
13982 | CORE_ADDR range_beginning, range_end; | |
13983 | ||
c8a7a66f | 13984 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 13985 | buffer += addr_size; |
c8a7a66f | 13986 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
13987 | buffer += addr_size; |
13988 | offset += 2 * addr_size; | |
13989 | ||
13990 | /* An end of list marker is a pair of zero addresses. */ | |
13991 | if (range_beginning == 0 && range_end == 0) | |
13992 | /* Found the end of list entry. */ | |
13993 | break; | |
13994 | ||
13995 | /* Each base address selection entry is a pair of 2 values. | |
13996 | The first is the largest possible address, the second is | |
13997 | the base address. Check for a base address here. */ | |
13998 | if ((range_beginning & mask) == mask) | |
13999 | { | |
28d2bfb9 AB |
14000 | /* If we found the largest possible address, then we already |
14001 | have the base address in range_end. */ | |
14002 | base = range_end; | |
43039443 JK |
14003 | continue; |
14004 | } | |
14005 | ||
2b24b6e4 | 14006 | if (!base.has_value ()) |
43039443 JK |
14007 | { |
14008 | /* We have no valid base address for the ranges | |
14009 | data. */ | |
b98664d3 | 14010 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14011 | return 0; |
14012 | } | |
14013 | ||
9277c30c UW |
14014 | if (range_beginning > range_end) |
14015 | { | |
14016 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14017 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14018 | return 0; |
14019 | } | |
14020 | ||
14021 | /* Empty range entries have no effect. */ | |
14022 | if (range_beginning == range_end) | |
14023 | continue; | |
14024 | ||
2b24b6e4 TT |
14025 | range_beginning += *base; |
14026 | range_end += *base; | |
43039443 | 14027 | |
01093045 DE |
14028 | /* A not-uncommon case of bad debug info. |
14029 | Don't pollute the addrmap with bad data. */ | |
14030 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14031 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14032 | { |
b98664d3 | 14033 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14034 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14035 | continue; |
14036 | } | |
14037 | ||
5f46c5a5 JK |
14038 | callback (range_beginning, range_end); |
14039 | } | |
14040 | ||
14041 | return 1; | |
14042 | } | |
14043 | ||
14044 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14045 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14046 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14047 | ||
14048 | static int | |
14049 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14050 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 14051 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 14052 | { |
5e22e966 | 14053 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14054 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14055 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14056 | int low_set = 0; |
14057 | CORE_ADDR low = 0; | |
14058 | CORE_ADDR high = 0; | |
14059 | int retval; | |
14060 | ||
14061 | retval = dwarf2_ranges_process (offset, cu, | |
14062 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14063 | { | |
9277c30c | 14064 | if (ranges_pst != NULL) |
3e29f34a MR |
14065 | { |
14066 | CORE_ADDR lowpc; | |
14067 | CORE_ADDR highpc; | |
14068 | ||
79748972 TT |
14069 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14070 | range_beginning + baseaddr) | |
14071 | - baseaddr); | |
14072 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14073 | range_end + baseaddr) | |
14074 | - baseaddr); | |
d320c2b5 TT |
14075 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14076 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14077 | } |
ff013f42 | 14078 | |
43039443 JK |
14079 | /* FIXME: This is recording everything as a low-high |
14080 | segment of consecutive addresses. We should have a | |
14081 | data structure for discontiguous block ranges | |
14082 | instead. */ | |
14083 | if (! low_set) | |
14084 | { | |
14085 | low = range_beginning; | |
14086 | high = range_end; | |
14087 | low_set = 1; | |
14088 | } | |
14089 | else | |
14090 | { | |
14091 | if (range_beginning < low) | |
14092 | low = range_beginning; | |
14093 | if (range_end > high) | |
14094 | high = range_end; | |
14095 | } | |
5f46c5a5 JK |
14096 | }); |
14097 | if (!retval) | |
14098 | return 0; | |
43039443 JK |
14099 | |
14100 | if (! low_set) | |
14101 | /* If the first entry is an end-of-list marker, the range | |
14102 | describes an empty scope, i.e. no instructions. */ | |
14103 | return 0; | |
14104 | ||
14105 | if (low_return) | |
14106 | *low_return = low; | |
14107 | if (high_return) | |
14108 | *high_return = high; | |
14109 | return 1; | |
14110 | } | |
14111 | ||
3a2b436a JK |
14112 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14113 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14114 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14115 | |
3a2b436a | 14116 | static enum pc_bounds_kind |
af34e669 | 14117 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14118 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14119 | dwarf2_psymtab *pst) |
c906108c | 14120 | { |
5e22e966 | 14121 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
c906108c | 14122 | struct attribute *attr; |
91da1414 | 14123 | struct attribute *attr_high; |
af34e669 DJ |
14124 | CORE_ADDR low = 0; |
14125 | CORE_ADDR high = 0; | |
e385593e | 14126 | enum pc_bounds_kind ret; |
c906108c | 14127 | |
91da1414 MW |
14128 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14129 | if (attr_high) | |
af34e669 | 14130 | { |
e142c38c | 14131 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14132 | if (attr != nullptr) |
91da1414 | 14133 | { |
cd6c91b4 TT |
14134 | low = attr->value_as_address (); |
14135 | high = attr_high->value_as_address (); | |
14136 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 14137 | high += low; |
91da1414 | 14138 | } |
af34e669 DJ |
14139 | else |
14140 | /* Found high w/o low attribute. */ | |
e385593e | 14141 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14142 | |
14143 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14144 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14145 | } |
c906108c | 14146 | else |
af34e669 | 14147 | { |
e142c38c | 14148 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14149 | if (attr != NULL) |
14150 | { | |
18a8505e | 14151 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14152 | We take advantage of the fact that DW_AT_ranges does not appear |
14153 | in DW_TAG_compile_unit of DWO files. */ | |
14154 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14155 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14156 | + (need_ranges_base | |
14157 | ? cu->ranges_base | |
14158 | : 0)); | |
2e3cf129 | 14159 | |
af34e669 | 14160 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14161 | .debug_ranges section. */ |
2e3cf129 | 14162 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14163 | return PC_BOUNDS_INVALID; |
43039443 | 14164 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14165 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14166 | } |
e385593e JK |
14167 | else |
14168 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14169 | } |
c906108c | 14170 | |
48fbe735 | 14171 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14172 | if (high <= low) |
e385593e | 14173 | return PC_BOUNDS_INVALID; |
c906108c SS |
14174 | |
14175 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14176 | eliminate duplicate copies of functions and vtables and such. | |
14177 | The linker will arbitrarily choose one and discard the others. | |
14178 | The AT_*_pc values for such functions refer to local labels in | |
14179 | these sections. If the section from that file was discarded, the | |
14180 | labels are not in the output, so the relocs get a value of 0. | |
14181 | If this is a discarded function, mark the pc bounds as invalid, | |
14182 | so that GDB will ignore it. */ | |
5989a64e | 14183 | if (low == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14184 | return PC_BOUNDS_INVALID; |
c906108c SS |
14185 | |
14186 | *lowpc = low; | |
96408a79 SA |
14187 | if (highpc) |
14188 | *highpc = high; | |
af34e669 | 14189 | return ret; |
c906108c SS |
14190 | } |
14191 | ||
b084d499 JB |
14192 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14193 | its low and high PC addresses. Do nothing if these addresses could not | |
14194 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14195 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14196 | ||
14197 | static void | |
14198 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14199 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14200 | struct dwarf2_cu *cu) | |
14201 | { | |
14202 | CORE_ADDR low, high; | |
14203 | struct die_info *child = die->child; | |
14204 | ||
e385593e | 14205 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14206 | { |
325fac50 PA |
14207 | *lowpc = std::min (*lowpc, low); |
14208 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14209 | } |
14210 | ||
14211 | /* If the language does not allow nested subprograms (either inside | |
14212 | subprograms or lexical blocks), we're done. */ | |
14213 | if (cu->language != language_ada) | |
14214 | return; | |
6e70227d | 14215 | |
b084d499 JB |
14216 | /* Check all the children of the given DIE. If it contains nested |
14217 | subprograms, then check their pc bounds. Likewise, we need to | |
14218 | check lexical blocks as well, as they may also contain subprogram | |
14219 | definitions. */ | |
14220 | while (child && child->tag) | |
14221 | { | |
14222 | if (child->tag == DW_TAG_subprogram | |
14223 | || child->tag == DW_TAG_lexical_block) | |
14224 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14225 | child = child->sibling; |
b084d499 JB |
14226 | } |
14227 | } | |
14228 | ||
fae299cd DC |
14229 | /* Get the low and high pc's represented by the scope DIE, and store |
14230 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14231 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14232 | ||
14233 | static void | |
14234 | get_scope_pc_bounds (struct die_info *die, | |
14235 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14236 | struct dwarf2_cu *cu) | |
14237 | { | |
14238 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14239 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14240 | CORE_ADDR current_low, current_high; | |
14241 | ||
3a2b436a | 14242 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14243 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14244 | { |
14245 | best_low = current_low; | |
14246 | best_high = current_high; | |
14247 | } | |
14248 | else | |
14249 | { | |
14250 | struct die_info *child = die->child; | |
14251 | ||
14252 | while (child && child->tag) | |
14253 | { | |
14254 | switch (child->tag) { | |
14255 | case DW_TAG_subprogram: | |
b084d499 | 14256 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14257 | break; |
14258 | case DW_TAG_namespace: | |
f55ee35c | 14259 | case DW_TAG_module: |
fae299cd DC |
14260 | /* FIXME: carlton/2004-01-16: Should we do this for |
14261 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14262 | that current GCC's always emit the DIEs corresponding | |
14263 | to definitions of methods of classes as children of a | |
14264 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14265 | the DIEs giving the declarations, which could be | |
14266 | anywhere). But I don't see any reason why the | |
14267 | standards says that they have to be there. */ | |
14268 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14269 | ||
14270 | if (current_low != ((CORE_ADDR) -1)) | |
14271 | { | |
325fac50 PA |
14272 | best_low = std::min (best_low, current_low); |
14273 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14274 | } |
14275 | break; | |
14276 | default: | |
0963b4bd | 14277 | /* Ignore. */ |
fae299cd DC |
14278 | break; |
14279 | } | |
14280 | ||
436c571c | 14281 | child = child->sibling; |
fae299cd DC |
14282 | } |
14283 | } | |
14284 | ||
14285 | *lowpc = best_low; | |
14286 | *highpc = best_high; | |
14287 | } | |
14288 | ||
801e3a5b JB |
14289 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14290 | in DIE. */ | |
380bca97 | 14291 | |
801e3a5b JB |
14292 | static void |
14293 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14294 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14295 | { | |
5e22e966 | 14296 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14297 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14298 | struct attribute *attr; |
91da1414 | 14299 | struct attribute *attr_high; |
801e3a5b | 14300 | |
91da1414 MW |
14301 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14302 | if (attr_high) | |
801e3a5b | 14303 | { |
801e3a5b | 14304 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14305 | if (attr != nullptr) |
801e3a5b | 14306 | { |
cd6c91b4 TT |
14307 | CORE_ADDR low = attr->value_as_address (); |
14308 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 14309 | |
cd6c91b4 | 14310 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14311 | high += low; |
9a619af0 | 14312 | |
3e29f34a MR |
14313 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14314 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14315 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14316 | } |
14317 | } | |
14318 | ||
14319 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14320 | if (attr != nullptr) |
801e3a5b | 14321 | { |
18a8505e | 14322 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14323 | We take advantage of the fact that DW_AT_ranges does not appear |
14324 | in DW_TAG_compile_unit of DWO files. */ | |
14325 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14326 | |
14327 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14328 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14329 | unsigned long offset = (DW_UNSND (attr) |
14330 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14331 | |
2d5f09ec | 14332 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14333 | dwarf2_ranges_process (offset, cu, |
14334 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14335 | { | |
58fdfd2c JK |
14336 | start += baseaddr; |
14337 | end += baseaddr; | |
5f46c5a5 JK |
14338 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14339 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14340 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14341 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14342 | }); |
2d5f09ec KB |
14343 | |
14344 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14345 | } |
14346 | } | |
14347 | ||
685b1105 JK |
14348 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14349 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14350 | |
685b1105 JK |
14351 | static void |
14352 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14353 | { |
38360086 | 14354 | int major, minor; |
60d5a603 JK |
14355 | |
14356 | if (cu->producer == NULL) | |
14357 | { | |
14358 | /* For unknown compilers expect their behavior is DWARF version | |
14359 | compliant. | |
14360 | ||
14361 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14362 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14363 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14364 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14365 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14366 | } |
b1ffba5a | 14367 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14368 | { |
38360086 MW |
14369 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14370 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14371 | } |
5230b05a | 14372 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14373 | { |
14374 | cu->producer_is_icc = true; | |
14375 | cu->producer_is_icc_lt_14 = major < 14; | |
14376 | } | |
c258c396 JD |
14377 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14378 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14379 | else |
14380 | { | |
14381 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14382 | compliant. */ | |
60d5a603 JK |
14383 | } |
14384 | ||
9068261f | 14385 | cu->checked_producer = true; |
685b1105 | 14386 | } |
ba919b58 | 14387 | |
685b1105 JK |
14388 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14389 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14390 | during 4.6.0 experimental. */ | |
14391 | ||
9068261f | 14392 | static bool |
685b1105 JK |
14393 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14394 | { | |
14395 | if (!cu->checked_producer) | |
14396 | check_producer (cu); | |
14397 | ||
14398 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14399 | } |
14400 | ||
c258c396 JD |
14401 | |
14402 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14403 | with incorrect is_stmt attributes. */ | |
14404 | ||
14405 | static bool | |
14406 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14407 | { | |
14408 | if (!cu->checked_producer) | |
14409 | check_producer (cu); | |
14410 | ||
14411 | return cu->producer_is_codewarrior; | |
14412 | } | |
14413 | ||
405feb71 | 14414 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14415 | DW_AT_accessibility. */ |
14416 | ||
14417 | static enum dwarf_access_attribute | |
14418 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14419 | { | |
14420 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14421 | { | |
14422 | /* The default DWARF 2 accessibility for members is public, the default | |
14423 | accessibility for inheritance is private. */ | |
14424 | ||
14425 | if (die->tag != DW_TAG_inheritance) | |
14426 | return DW_ACCESS_public; | |
14427 | else | |
14428 | return DW_ACCESS_private; | |
14429 | } | |
14430 | else | |
14431 | { | |
14432 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14433 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14434 | depends on the container kind. */ | |
14435 | ||
14436 | if (die->parent->tag == DW_TAG_class_type) | |
14437 | return DW_ACCESS_private; | |
14438 | else | |
14439 | return DW_ACCESS_public; | |
14440 | } | |
14441 | } | |
14442 | ||
74ac6d43 TT |
14443 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14444 | offset. If the attribute was not found return 0, otherwise return | |
14445 | 1. If it was found but could not properly be handled, set *OFFSET | |
14446 | to 0. */ | |
14447 | ||
14448 | static int | |
14449 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14450 | LONGEST *offset) | |
14451 | { | |
14452 | struct attribute *attr; | |
14453 | ||
14454 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14455 | if (attr != NULL) | |
14456 | { | |
14457 | *offset = 0; | |
14458 | ||
14459 | /* Note that we do not check for a section offset first here. | |
14460 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14461 | so if we see it, we can assume that a constant form is really | |
14462 | a constant and not a section offset. */ | |
cd6c91b4 | 14463 | if (attr->form_is_constant ()) |
0826b30a | 14464 | *offset = attr->constant_value (0); |
cd6c91b4 | 14465 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14466 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14467 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14468 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14469 | else | |
14470 | dwarf2_complex_location_expr_complaint (); | |
14471 | ||
14472 | return 1; | |
14473 | } | |
14474 | ||
14475 | return 0; | |
14476 | } | |
14477 | ||
7d79de9a TT |
14478 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14479 | ||
14480 | static void | |
14481 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14482 | struct field *field) | |
14483 | { | |
14484 | struct attribute *attr; | |
14485 | ||
14486 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14487 | if (attr != NULL) | |
14488 | { | |
14489 | if (attr->form_is_constant ()) | |
14490 | { | |
14491 | LONGEST offset = attr->constant_value (0); | |
14492 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14493 | } | |
14494 | else if (attr->form_is_section_offset ()) | |
14495 | dwarf2_complex_location_expr_complaint (); | |
14496 | else if (attr->form_is_block ()) | |
14497 | { | |
14498 | bool handled; | |
14499 | CORE_ADDR offset = decode_locdesc (DW_BLOCK (attr), cu, &handled); | |
14500 | if (handled) | |
14501 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14502 | else | |
14503 | { | |
5e22e966 SM |
14504 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14505 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14506 | struct dwarf2_locexpr_baton *dlbaton |
14507 | = XOBNEW (&objfile->objfile_obstack, | |
14508 | struct dwarf2_locexpr_baton); | |
14509 | dlbaton->data = DW_BLOCK (attr)->data; | |
14510 | dlbaton->size = DW_BLOCK (attr)->size; | |
14511 | /* When using this baton, we want to compute the address | |
14512 | of the field, not the value. This is why | |
14513 | is_reference is set to false here. */ | |
14514 | dlbaton->is_reference = false; | |
5e22e966 | 14515 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14516 | dlbaton->per_cu = cu->per_cu; |
14517 | ||
14518 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14519 | } | |
14520 | } | |
14521 | else | |
14522 | dwarf2_complex_location_expr_complaint (); | |
14523 | } | |
14524 | } | |
14525 | ||
c906108c SS |
14526 | /* Add an aggregate field to the field list. */ |
14527 | ||
14528 | static void | |
107d2387 | 14529 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14530 | struct dwarf2_cu *cu) |
6e70227d | 14531 | { |
5e22e966 | 14532 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14533 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14534 | struct nextfield *new_field; |
14535 | struct attribute *attr; | |
14536 | struct field *fp; | |
15d034d0 | 14537 | const char *fieldname = ""; |
c906108c | 14538 | |
7d0ccb61 DJ |
14539 | if (die->tag == DW_TAG_inheritance) |
14540 | { | |
be2daae6 TT |
14541 | fip->baseclasses.emplace_back (); |
14542 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14543 | } |
14544 | else | |
14545 | { | |
be2daae6 TT |
14546 | fip->fields.emplace_back (); |
14547 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14548 | } |
be2daae6 | 14549 | |
9c6a1327 TT |
14550 | new_field->offset = die->sect_off; |
14551 | ||
e142c38c | 14552 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14553 | if (attr != nullptr) |
c906108c | 14554 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14555 | else |
14556 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14557 | if (new_field->accessibility != DW_ACCESS_public) |
14558 | fip->non_public_fields = 1; | |
60d5a603 | 14559 | |
e142c38c | 14560 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14561 | if (attr != nullptr) |
c906108c | 14562 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14563 | else |
14564 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14565 | |
14566 | fp = &new_field->field; | |
a9a9bd0f | 14567 | |
e142c38c | 14568 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14569 | { |
a9a9bd0f | 14570 | /* Data member other than a C++ static data member. */ |
6e70227d | 14571 | |
c906108c | 14572 | /* Get type of field. */ |
e7c27a73 | 14573 | fp->type = die_type (die, cu); |
c906108c | 14574 | |
d6a843b5 | 14575 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14576 | |
c906108c | 14577 | /* Get bit size of field (zero if none). */ |
e142c38c | 14578 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14579 | if (attr != nullptr) |
c906108c SS |
14580 | { |
14581 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14582 | } | |
14583 | else | |
14584 | { | |
14585 | FIELD_BITSIZE (*fp) = 0; | |
14586 | } | |
14587 | ||
14588 | /* Get bit offset of field. */ | |
7d79de9a | 14589 | handle_data_member_location (die, cu, fp); |
e142c38c | 14590 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14591 | if (attr != nullptr) |
c906108c | 14592 | { |
d5a22e77 | 14593 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14594 | { |
14595 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14596 | additional bit offset from the MSB of the containing |
14597 | anonymous object to the MSB of the field. We don't | |
14598 | have to do anything special since we don't need to | |
14599 | know the size of the anonymous object. */ | |
f41f5e61 | 14600 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14601 | } |
14602 | else | |
14603 | { | |
14604 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14605 | MSB of the anonymous object, subtract off the number of |
14606 | bits from the MSB of the field to the MSB of the | |
14607 | object, and then subtract off the number of bits of | |
14608 | the field itself. The result is the bit offset of | |
14609 | the LSB of the field. */ | |
c906108c SS |
14610 | int anonymous_size; |
14611 | int bit_offset = DW_UNSND (attr); | |
14612 | ||
e142c38c | 14613 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14614 | if (attr != nullptr) |
c906108c SS |
14615 | { |
14616 | /* The size of the anonymous object containing | |
14617 | the bit field is explicit, so use the | |
14618 | indicated size (in bytes). */ | |
14619 | anonymous_size = DW_UNSND (attr); | |
14620 | } | |
14621 | else | |
14622 | { | |
14623 | /* The size of the anonymous object containing | |
14624 | the bit field must be inferred from the type | |
14625 | attribute of the data member containing the | |
14626 | bit field. */ | |
14627 | anonymous_size = TYPE_LENGTH (fp->type); | |
14628 | } | |
f41f5e61 PA |
14629 | SET_FIELD_BITPOS (*fp, |
14630 | (FIELD_BITPOS (*fp) | |
14631 | + anonymous_size * bits_per_byte | |
14632 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14633 | } |
14634 | } | |
da5b30da AA |
14635 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14636 | if (attr != NULL) | |
14637 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14638 | + attr->constant_value (0))); |
c906108c SS |
14639 | |
14640 | /* Get name of field. */ | |
39cbfefa DJ |
14641 | fieldname = dwarf2_name (die, cu); |
14642 | if (fieldname == NULL) | |
14643 | fieldname = ""; | |
d8151005 DJ |
14644 | |
14645 | /* The name is already allocated along with this objfile, so we don't | |
14646 | need to duplicate it for the type. */ | |
14647 | fp->name = fieldname; | |
c906108c SS |
14648 | |
14649 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14650 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14651 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14652 | { |
d48cc9dd | 14653 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14654 | new_field->accessibility = DW_ACCESS_private; |
14655 | fip->non_public_fields = 1; | |
14656 | } | |
14657 | } | |
a9a9bd0f | 14658 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14659 | { |
a9a9bd0f DC |
14660 | /* C++ static member. */ |
14661 | ||
14662 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14663 | is a declaration, but all versions of G++ as of this writing | |
14664 | (so through at least 3.2.1) incorrectly generate | |
14665 | DW_TAG_variable tags. */ | |
6e70227d | 14666 | |
ff355380 | 14667 | const char *physname; |
c906108c | 14668 | |
a9a9bd0f | 14669 | /* Get name of field. */ |
39cbfefa DJ |
14670 | fieldname = dwarf2_name (die, cu); |
14671 | if (fieldname == NULL) | |
c906108c SS |
14672 | return; |
14673 | ||
254e6b9e | 14674 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14675 | if (attr |
14676 | /* Only create a symbol if this is an external value. | |
14677 | new_symbol checks this and puts the value in the global symbol | |
14678 | table, which we want. If it is not external, new_symbol | |
14679 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14680 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14681 | { |
14682 | /* A static const member, not much different than an enum as far as | |
14683 | we're concerned, except that we can support more types. */ | |
14684 | new_symbol (die, NULL, cu); | |
14685 | } | |
14686 | ||
2df3850c | 14687 | /* Get physical name. */ |
ff355380 | 14688 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14689 | |
d8151005 DJ |
14690 | /* The name is already allocated along with this objfile, so we don't |
14691 | need to duplicate it for the type. */ | |
14692 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 14693 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 14694 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14695 | } |
14696 | else if (die->tag == DW_TAG_inheritance) | |
14697 | { | |
74ac6d43 | 14698 | /* C++ base class field. */ |
7d79de9a | 14699 | handle_data_member_location (die, cu, fp); |
c906108c | 14700 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 14701 | FIELD_TYPE (*fp) = die_type (die, cu); |
7d93a1e0 | 14702 | FIELD_NAME (*fp) = fp->type->name (); |
c906108c | 14703 | } |
2ddeaf8a TT |
14704 | else |
14705 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14706 | } |
14707 | ||
883fd55a KS |
14708 | /* Can the type given by DIE define another type? */ |
14709 | ||
14710 | static bool | |
14711 | type_can_define_types (const struct die_info *die) | |
14712 | { | |
14713 | switch (die->tag) | |
14714 | { | |
14715 | case DW_TAG_typedef: | |
14716 | case DW_TAG_class_type: | |
14717 | case DW_TAG_structure_type: | |
14718 | case DW_TAG_union_type: | |
14719 | case DW_TAG_enumeration_type: | |
14720 | return true; | |
14721 | ||
14722 | default: | |
14723 | return false; | |
14724 | } | |
14725 | } | |
14726 | ||
14727 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14728 | |
14729 | static void | |
883fd55a KS |
14730 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14731 | struct dwarf2_cu *cu) | |
6e70227d | 14732 | { |
be2daae6 TT |
14733 | struct decl_field fp; |
14734 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14735 | |
883fd55a | 14736 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14737 | |
883fd55a | 14738 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14739 | fp.name = dwarf2_name (die, cu); |
14740 | fp.type = read_type_die (die, cu); | |
98751a41 | 14741 | |
c191a687 KS |
14742 | /* Save accessibility. */ |
14743 | enum dwarf_access_attribute accessibility; | |
14744 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14745 | if (attr != NULL) | |
14746 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14747 | else | |
14748 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14749 | switch (accessibility) | |
14750 | { | |
14751 | case DW_ACCESS_public: | |
14752 | /* The assumed value if neither private nor protected. */ | |
14753 | break; | |
14754 | case DW_ACCESS_private: | |
be2daae6 | 14755 | fp.is_private = 1; |
c191a687 KS |
14756 | break; |
14757 | case DW_ACCESS_protected: | |
be2daae6 | 14758 | fp.is_protected = 1; |
c191a687 KS |
14759 | break; |
14760 | default: | |
b98664d3 | 14761 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14762 | } |
14763 | ||
883fd55a | 14764 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14765 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14766 | else |
be2daae6 | 14767 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14768 | } |
14769 | ||
9c6a1327 TT |
14770 | /* A convenience typedef that's used when finding the discriminant |
14771 | field for a variant part. */ | |
1b95cdb7 SM |
14772 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
14773 | offset_map_type; | |
9c6a1327 TT |
14774 | |
14775 | /* Compute the discriminant range for a given variant. OBSTACK is | |
14776 | where the results will be stored. VARIANT is the variant to | |
14777 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
14778 | or unsigned. */ | |
14779 | ||
14780 | static const gdb::array_view<discriminant_range> | |
14781 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
14782 | bool is_unsigned) | |
14783 | { | |
14784 | std::vector<discriminant_range> ranges; | |
14785 | ||
14786 | if (variant.default_branch) | |
14787 | return {}; | |
14788 | ||
14789 | if (variant.discr_list_data == nullptr) | |
14790 | { | |
14791 | discriminant_range r | |
14792 | = {variant.discriminant_value, variant.discriminant_value}; | |
14793 | ranges.push_back (r); | |
14794 | } | |
14795 | else | |
14796 | { | |
14797 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
14798 | variant.discr_list_data->size); | |
14799 | while (!data.empty ()) | |
14800 | { | |
14801 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
14802 | { | |
14803 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
14804 | break; | |
14805 | } | |
14806 | bool is_range = data[0] == DW_DSC_range; | |
14807 | data = data.slice (1); | |
14808 | ||
14809 | ULONGEST low, high; | |
14810 | unsigned int bytes_read; | |
14811 | ||
14812 | if (data.empty ()) | |
14813 | { | |
14814 | complaint (_("DW_AT_discr_list missing low value")); | |
14815 | break; | |
14816 | } | |
14817 | if (is_unsigned) | |
14818 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
14819 | else | |
14820 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
14821 | &bytes_read); | |
14822 | data = data.slice (bytes_read); | |
14823 | ||
14824 | if (is_range) | |
14825 | { | |
14826 | if (data.empty ()) | |
14827 | { | |
14828 | complaint (_("DW_AT_discr_list missing high value")); | |
14829 | break; | |
14830 | } | |
14831 | if (is_unsigned) | |
14832 | high = read_unsigned_leb128 (nullptr, data.data (), | |
14833 | &bytes_read); | |
14834 | else | |
14835 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
14836 | &bytes_read); | |
14837 | data = data.slice (bytes_read); | |
14838 | } | |
14839 | else | |
14840 | high = low; | |
14841 | ||
14842 | ranges.push_back ({ low, high }); | |
14843 | } | |
14844 | } | |
14845 | ||
14846 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
14847 | ranges.size ()); | |
14848 | std::copy (ranges.begin (), ranges.end (), result); | |
14849 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
14850 | } | |
14851 | ||
14852 | static const gdb::array_view<variant_part> create_variant_parts | |
14853 | (struct obstack *obstack, | |
14854 | const offset_map_type &offset_map, | |
14855 | struct field_info *fi, | |
14856 | const std::vector<variant_part_builder> &variant_parts); | |
14857 | ||
14858 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
14859 | the variant to fill in. OBSTACK is where any needed allocations | |
14860 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
14861 | fields for the type. FI describes the fields of the type we're | |
14862 | processing. FIELD is the variant field we're converting. */ | |
14863 | ||
14864 | static void | |
14865 | create_one_variant (variant &result, struct obstack *obstack, | |
14866 | const offset_map_type &offset_map, | |
14867 | struct field_info *fi, const variant_field &field) | |
14868 | { | |
14869 | result.discriminants = convert_variant_range (obstack, field, false); | |
14870 | result.first_field = field.first_field + fi->baseclasses.size (); | |
14871 | result.last_field = field.last_field + fi->baseclasses.size (); | |
14872 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
14873 | field.variant_parts); | |
14874 | } | |
14875 | ||
14876 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
14877 | is the variant part to fill in. OBSTACK is where any needed | |
14878 | allocations will be done. OFFSET_MAP holds the mapping from | |
14879 | section offsets to fields for the type. FI describes the fields of | |
14880 | the type we're processing. BUILDER is the variant part to be | |
14881 | converted. */ | |
14882 | ||
14883 | static void | |
14884 | create_one_variant_part (variant_part &result, | |
14885 | struct obstack *obstack, | |
14886 | const offset_map_type &offset_map, | |
14887 | struct field_info *fi, | |
14888 | const variant_part_builder &builder) | |
14889 | { | |
14890 | auto iter = offset_map.find (builder.discriminant_offset); | |
14891 | if (iter == offset_map.end ()) | |
14892 | { | |
14893 | result.discriminant_index = -1; | |
14894 | /* Doesn't matter. */ | |
14895 | result.is_unsigned = false; | |
14896 | } | |
14897 | else | |
14898 | { | |
14899 | result.discriminant_index = iter->second; | |
14900 | result.is_unsigned | |
14901 | = TYPE_UNSIGNED (FIELD_TYPE | |
14902 | (fi->fields[result.discriminant_index].field)); | |
14903 | } | |
14904 | ||
14905 | size_t n = builder.variants.size (); | |
14906 | variant *output = new (obstack) variant[n]; | |
14907 | for (size_t i = 0; i < n; ++i) | |
14908 | create_one_variant (output[i], obstack, offset_map, fi, | |
14909 | builder.variants[i]); | |
14910 | ||
14911 | result.variants = gdb::array_view<variant> (output, n); | |
14912 | } | |
14913 | ||
14914 | /* Create a vector of variant parts that can be attached to a type. | |
14915 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
14916 | holds the mapping from section offsets to fields for the type. FI | |
14917 | describes the fields of the type we're processing. VARIANT_PARTS | |
14918 | is the vector to convert. */ | |
14919 | ||
14920 | static const gdb::array_view<variant_part> | |
14921 | create_variant_parts (struct obstack *obstack, | |
14922 | const offset_map_type &offset_map, | |
14923 | struct field_info *fi, | |
14924 | const std::vector<variant_part_builder> &variant_parts) | |
14925 | { | |
14926 | if (variant_parts.empty ()) | |
14927 | return {}; | |
14928 | ||
14929 | size_t n = variant_parts.size (); | |
14930 | variant_part *result = new (obstack) variant_part[n]; | |
14931 | for (size_t i = 0; i < n; ++i) | |
14932 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
14933 | variant_parts[i]); | |
14934 | ||
14935 | return gdb::array_view<variant_part> (result, n); | |
14936 | } | |
14937 | ||
14938 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
14939 | done. */ | |
14940 | ||
14941 | static void | |
14942 | add_variant_property (struct field_info *fip, struct type *type, | |
14943 | struct dwarf2_cu *cu) | |
14944 | { | |
14945 | /* Map section offsets of fields to their field index. Note the | |
14946 | field index here does not take the number of baseclasses into | |
14947 | account. */ | |
14948 | offset_map_type offset_map; | |
14949 | for (int i = 0; i < fip->fields.size (); ++i) | |
14950 | offset_map[fip->fields[i].offset] = i; | |
14951 | ||
5e22e966 | 14952 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
14953 | gdb::array_view<variant_part> parts |
14954 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
14955 | fip->variant_parts); | |
14956 | ||
14957 | struct dynamic_prop prop; | |
14958 | prop.kind = PROP_VARIANT_PARTS; | |
14959 | prop.data.variant_parts | |
14960 | = ((gdb::array_view<variant_part> *) | |
14961 | obstack_copy (&objfile->objfile_obstack, &parts, sizeof (parts))); | |
14962 | ||
5c54719c | 14963 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
14964 | } |
14965 | ||
c906108c SS |
14966 | /* Create the vector of fields, and attach it to the type. */ |
14967 | ||
14968 | static void | |
fba45db2 | 14969 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14970 | struct dwarf2_cu *cu) |
c906108c | 14971 | { |
317f7127 | 14972 | int nfields = fip->nfields (); |
c906108c SS |
14973 | |
14974 | /* Record the field count, allocate space for the array of fields, | |
14975 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 14976 | type->set_num_fields (nfields); |
3cabb6b0 SM |
14977 | type->set_fields |
14978 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 14979 | |
b4ba55a1 | 14980 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14981 | { |
14982 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14983 | ||
14984 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14985 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14986 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14987 | ||
14988 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14989 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14990 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14991 | ||
774b6a14 TT |
14992 | TYPE_FIELD_IGNORE_BITS (type) = |
14993 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14994 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14995 | } |
14996 | ||
14997 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14998 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14999 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15000 | { |
be2daae6 | 15001 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15002 | unsigned char *pointer; |
c906108c SS |
15003 | |
15004 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15005 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15006 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15007 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15008 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15009 | } |
15010 | ||
9c6a1327 TT |
15011 | if (!fip->variant_parts.empty ()) |
15012 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15013 | |
be2daae6 TT |
15014 | /* Copy the saved-up fields into the field vector. */ |
15015 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15016 | { |
be2daae6 TT |
15017 | struct nextfield &field |
15018 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15019 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15020 | |
ceacbf6e | 15021 | type->field (i) = field.field; |
be2daae6 | 15022 | switch (field.accessibility) |
c906108c | 15023 | { |
c5aa993b | 15024 | case DW_ACCESS_private: |
b4ba55a1 | 15025 | if (cu->language != language_ada) |
be2daae6 | 15026 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15027 | break; |
c906108c | 15028 | |
c5aa993b | 15029 | case DW_ACCESS_protected: |
b4ba55a1 | 15030 | if (cu->language != language_ada) |
be2daae6 | 15031 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15032 | break; |
c906108c | 15033 | |
c5aa993b JM |
15034 | case DW_ACCESS_public: |
15035 | break; | |
c906108c | 15036 | |
c5aa993b JM |
15037 | default: |
15038 | /* Unknown accessibility. Complain and treat it as public. */ | |
15039 | { | |
b98664d3 | 15040 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15041 | field.accessibility); |
c5aa993b JM |
15042 | } |
15043 | break; | |
c906108c | 15044 | } |
be2daae6 | 15045 | if (i < fip->baseclasses.size ()) |
c906108c | 15046 | { |
be2daae6 | 15047 | switch (field.virtuality) |
c906108c | 15048 | { |
c5aa993b JM |
15049 | case DW_VIRTUALITY_virtual: |
15050 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15051 | if (cu->language == language_ada) |
a73c6dcd | 15052 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15053 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15054 | break; |
c906108c SS |
15055 | } |
15056 | } | |
c906108c SS |
15057 | } |
15058 | } | |
15059 | ||
7d27a96d TT |
15060 | /* Return true if this member function is a constructor, false |
15061 | otherwise. */ | |
15062 | ||
15063 | static int | |
15064 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15065 | { | |
15066 | const char *fieldname; | |
fe978cb0 | 15067 | const char *type_name; |
7d27a96d TT |
15068 | int len; |
15069 | ||
15070 | if (die->parent == NULL) | |
15071 | return 0; | |
15072 | ||
15073 | if (die->parent->tag != DW_TAG_structure_type | |
15074 | && die->parent->tag != DW_TAG_union_type | |
15075 | && die->parent->tag != DW_TAG_class_type) | |
15076 | return 0; | |
15077 | ||
15078 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15079 | type_name = dwarf2_name (die->parent, cu); |
15080 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15081 | return 0; |
15082 | ||
15083 | len = strlen (fieldname); | |
fe978cb0 PA |
15084 | return (strncmp (fieldname, type_name, len) == 0 |
15085 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15086 | } |
15087 | ||
e35000a7 TBA |
15088 | /* Check if the given VALUE is a recognized enum |
15089 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
15090 | Table 7.24. */ | |
15091 | ||
15092 | static bool | |
15093 | is_valid_DW_AT_defaulted (ULONGEST value) | |
15094 | { | |
15095 | switch (value) | |
15096 | { | |
15097 | case DW_DEFAULTED_no: | |
15098 | case DW_DEFAULTED_in_class: | |
15099 | case DW_DEFAULTED_out_of_class: | |
15100 | return true; | |
15101 | } | |
15102 | ||
3142e908 | 15103 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
15104 | return false; |
15105 | } | |
15106 | ||
c906108c SS |
15107 | /* Add a member function to the proper fieldlist. */ |
15108 | ||
15109 | static void | |
107d2387 | 15110 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15111 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15112 | { |
5e22e966 | 15113 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15114 | struct attribute *attr; |
c906108c | 15115 | int i; |
be2daae6 | 15116 | struct fnfieldlist *flp = nullptr; |
c906108c | 15117 | struct fn_field *fnp; |
15d034d0 | 15118 | const char *fieldname; |
f792889a | 15119 | struct type *this_type; |
60d5a603 | 15120 | enum dwarf_access_attribute accessibility; |
c906108c | 15121 | |
b4ba55a1 | 15122 | if (cu->language == language_ada) |
a73c6dcd | 15123 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15124 | |
2df3850c | 15125 | /* Get name of member function. */ |
39cbfefa DJ |
15126 | fieldname = dwarf2_name (die, cu); |
15127 | if (fieldname == NULL) | |
2df3850c | 15128 | return; |
c906108c | 15129 | |
c906108c | 15130 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15131 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15132 | { |
27bfe10e | 15133 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15134 | { |
15135 | flp = &fip->fnfieldlists[i]; | |
15136 | break; | |
15137 | } | |
c906108c SS |
15138 | } |
15139 | ||
be2daae6 TT |
15140 | /* Create a new fnfieldlist if necessary. */ |
15141 | if (flp == nullptr) | |
c906108c | 15142 | { |
be2daae6 TT |
15143 | fip->fnfieldlists.emplace_back (); |
15144 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15145 | flp->name = fieldname; |
be2daae6 | 15146 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15147 | } |
15148 | ||
be2daae6 TT |
15149 | /* Create a new member function field and add it to the vector of |
15150 | fnfieldlists. */ | |
15151 | flp->fnfields.emplace_back (); | |
15152 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15153 | |
15154 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15155 | if (cu->language == language_cplus) |
be2daae6 TT |
15156 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15157 | die, cu); | |
3da10d80 KS |
15158 | else |
15159 | { | |
1d06ead6 | 15160 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15161 | fnp->physname = physname ? physname : ""; |
15162 | } | |
15163 | ||
c906108c | 15164 | fnp->type = alloc_type (objfile); |
f792889a | 15165 | this_type = read_type_die (die, cu); |
78134374 | 15166 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15167 | { |
1f704f76 | 15168 | int nparams = this_type->num_fields (); |
c906108c | 15169 | |
f792889a | 15170 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15171 | of the method itself (TYPE_CODE_METHOD). */ |
15172 | smash_to_method_type (fnp->type, type, | |
f792889a | 15173 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15174 | this_type->fields (), |
1f704f76 | 15175 | this_type->num_fields (), |
f792889a | 15176 | TYPE_VARARGS (this_type)); |
c906108c SS |
15177 | |
15178 | /* Handle static member functions. | |
c5aa993b | 15179 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15180 | member functions. G++ helps GDB by marking the first |
15181 | parameter for non-static member functions (which is the this | |
15182 | pointer) as artificial. We obtain this information from | |
15183 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15184 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15185 | fnp->voffset = VOFFSET_STATIC; |
15186 | } | |
15187 | else | |
b98664d3 | 15188 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15189 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15190 | |
15191 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15192 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15193 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15194 | |
3e43a32a MS |
15195 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15196 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15197 | |
15198 | /* Get accessibility. */ | |
e142c38c | 15199 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15200 | if (attr != nullptr) |
aead7601 | 15201 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15202 | else |
15203 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15204 | switch (accessibility) | |
c906108c | 15205 | { |
60d5a603 JK |
15206 | case DW_ACCESS_private: |
15207 | fnp->is_private = 1; | |
15208 | break; | |
15209 | case DW_ACCESS_protected: | |
15210 | fnp->is_protected = 1; | |
15211 | break; | |
c906108c SS |
15212 | } |
15213 | ||
b02dede2 | 15214 | /* Check for artificial methods. */ |
e142c38c | 15215 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15216 | if (attr && DW_UNSND (attr) != 0) |
15217 | fnp->is_artificial = 1; | |
15218 | ||
e35000a7 TBA |
15219 | /* Check for defaulted methods. */ |
15220 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15221 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15222 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15223 | ||
15224 | /* Check for deleted methods. */ | |
15225 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15226 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15227 | fnp->is_deleted = 1; | |
15228 | ||
7d27a96d TT |
15229 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15230 | ||
0d564a31 | 15231 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15232 | function. For older versions of GCC, this is an offset in the |
15233 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15234 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15235 | to the object address. */ |
15236 | ||
e142c38c | 15237 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15238 | if (attr != nullptr) |
8e19ed76 | 15239 | { |
4fc6c0d5 | 15240 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15241 | { |
aec5aa8b TT |
15242 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15243 | { | |
15244 | /* Old-style GCC. */ | |
15245 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15246 | } | |
15247 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15248 | || (DW_BLOCK (attr)->size > 1 | |
15249 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15250 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15251 | { | |
aec5aa8b TT |
15252 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15253 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15254 | dwarf2_complex_location_expr_complaint (); | |
15255 | else | |
15256 | fnp->voffset /= cu->header.addr_size; | |
15257 | fnp->voffset += 2; | |
15258 | } | |
15259 | else | |
15260 | dwarf2_complex_location_expr_complaint (); | |
15261 | ||
15262 | if (!fnp->fcontext) | |
7e993ebf KS |
15263 | { |
15264 | /* If there is no `this' field and no DW_AT_containing_type, | |
15265 | we cannot actually find a base class context for the | |
15266 | vtable! */ | |
1f704f76 | 15267 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15268 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15269 | { | |
b98664d3 | 15270 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15271 | "function \"%s\" (offset %s)"), |
15272 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15273 | } |
15274 | else | |
15275 | { | |
15276 | fnp->fcontext | |
15277 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15278 | } | |
15279 | } | |
aec5aa8b | 15280 | } |
cd6c91b4 | 15281 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 15282 | { |
4d3c2250 | 15283 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15284 | } |
15285 | else | |
15286 | { | |
4d3c2250 KB |
15287 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15288 | fieldname); | |
8e19ed76 | 15289 | } |
0d564a31 | 15290 | } |
d48cc9dd DJ |
15291 | else |
15292 | { | |
15293 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15294 | if (attr && DW_UNSND (attr)) | |
15295 | { | |
15296 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15297 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15298 | "but the vtable offset is not specified"), |
9d8780f0 | 15299 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15300 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15301 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15302 | } | |
15303 | } | |
c906108c SS |
15304 | } |
15305 | ||
15306 | /* Create the vector of member function fields, and attach it to the type. */ | |
15307 | ||
15308 | static void | |
fba45db2 | 15309 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15310 | struct dwarf2_cu *cu) |
c906108c | 15311 | { |
b4ba55a1 | 15312 | if (cu->language == language_ada) |
a73c6dcd | 15313 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15314 | |
c906108c SS |
15315 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15316 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15317 | TYPE_ALLOC (type, |
15318 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15319 | |
be2daae6 | 15320 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15321 | { |
be2daae6 | 15322 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15323 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15324 | |
be2daae6 TT |
15325 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15326 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15327 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15328 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15329 | ||
15330 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15331 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15332 | } |
15333 | ||
be2daae6 | 15334 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15335 | } |
15336 | ||
1168df01 JB |
15337 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15338 | language, zero otherwise. */ | |
15339 | static int | |
15340 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15341 | { | |
15342 | static const char vptr[] = "_vptr"; | |
15343 | ||
9c37b5ae TT |
15344 | /* Look for the C++ form of the vtable. */ |
15345 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15346 | return 1; |
15347 | ||
15348 | return 0; | |
15349 | } | |
15350 | ||
c0dd20ea | 15351 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15352 | functions, with the ABI-specified layout. If TYPE describes |
15353 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15354 | |
15355 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15356 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15357 | |
0b92b5bb TT |
15358 | static void |
15359 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15360 | { |
09e2d7c7 | 15361 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15362 | |
15363 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15364 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15365 | return; |
c0dd20ea DJ |
15366 | |
15367 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15368 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15369 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15370 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15371 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15372 | return; | |
c0dd20ea DJ |
15373 | |
15374 | /* Find the type of the method. */ | |
0b92b5bb | 15375 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea | 15376 | if (pfn_type == NULL |
78134374 SM |
15377 | || pfn_type->code () != TYPE_CODE_PTR |
15378 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15379 | return; |
c0dd20ea DJ |
15380 | |
15381 | /* Look for the "this" argument. */ | |
15382 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15383 | if (pfn_type->num_fields () == 0 |
0b92b5bb | 15384 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
78134374 | 15385 | || TYPE_FIELD_TYPE (pfn_type, 0)->code () != TYPE_CODE_PTR) |
0b92b5bb | 15386 | return; |
c0dd20ea | 15387 | |
09e2d7c7 | 15388 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15389 | new_type = alloc_type (objfile); |
09e2d7c7 | 15390 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15391 | pfn_type->fields (), pfn_type->num_fields (), |
c0dd20ea | 15392 | TYPE_VARARGS (pfn_type)); |
0b92b5bb | 15393 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15394 | } |
1168df01 | 15395 | |
2b4424c3 TT |
15396 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15397 | appropriate error checking and issuing complaints if there is a | |
15398 | problem. */ | |
15399 | ||
15400 | static ULONGEST | |
15401 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15402 | { | |
15403 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15404 | ||
15405 | if (attr == nullptr) | |
15406 | return 0; | |
15407 | ||
cd6c91b4 | 15408 | if (!attr->form_is_constant ()) |
2b4424c3 | 15409 | { |
b98664d3 | 15410 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15411 | " - DIE at %s [in module %s]"), |
15412 | sect_offset_str (die->sect_off), | |
5e22e966 | 15413 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15414 | return 0; |
15415 | } | |
15416 | ||
15417 | ULONGEST align; | |
15418 | if (attr->form == DW_FORM_sdata) | |
15419 | { | |
15420 | LONGEST val = DW_SND (attr); | |
15421 | if (val < 0) | |
15422 | { | |
b98664d3 | 15423 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15424 | " - DIE at %s [in module %s]"), |
15425 | sect_offset_str (die->sect_off), | |
5e22e966 | 15426 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15427 | return 0; |
15428 | } | |
15429 | align = val; | |
15430 | } | |
15431 | else | |
15432 | align = DW_UNSND (attr); | |
15433 | ||
15434 | if (align == 0) | |
15435 | { | |
b98664d3 | 15436 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15437 | " - DIE at %s [in module %s]"), |
15438 | sect_offset_str (die->sect_off), | |
5e22e966 | 15439 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15440 | return 0; |
15441 | } | |
15442 | if ((align & (align - 1)) != 0) | |
15443 | { | |
b98664d3 | 15444 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15445 | " - DIE at %s [in module %s]"), |
15446 | sect_offset_str (die->sect_off), | |
5e22e966 | 15447 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15448 | return 0; |
15449 | } | |
15450 | ||
15451 | return align; | |
15452 | } | |
15453 | ||
15454 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15455 | the alignment for TYPE. */ | |
15456 | ||
15457 | static void | |
15458 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15459 | struct type *type) | |
15460 | { | |
15461 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15462 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15463 | " - DIE at %s [in module %s]"), |
15464 | sect_offset_str (die->sect_off), | |
5e22e966 | 15465 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15466 | } |
685b1105 | 15467 | |
e35000a7 TBA |
15468 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15469 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15470 | ||
15471 | static bool | |
15472 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15473 | { | |
15474 | switch (value) | |
15475 | { | |
15476 | case DW_CC_normal: | |
15477 | case DW_CC_pass_by_reference: | |
15478 | case DW_CC_pass_by_value: | |
15479 | return true; | |
15480 | ||
15481 | default: | |
15482 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15483 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15484 | return false; |
15485 | } | |
15486 | } | |
15487 | ||
d0922fcf TBA |
15488 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15489 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15490 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15491 | ||
15492 | static bool | |
15493 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15494 | { | |
15495 | switch (value) | |
15496 | { | |
15497 | case DW_CC_normal: | |
15498 | case DW_CC_program: | |
15499 | case DW_CC_nocall: | |
15500 | return true; | |
15501 | ||
15502 | case DW_CC_GNU_renesas_sh: | |
15503 | case DW_CC_GNU_borland_fastcall_i386: | |
15504 | case DW_CC_GDB_IBM_OpenCL: | |
15505 | return true; | |
15506 | ||
15507 | default: | |
15508 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15509 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15510 | return false; |
15511 | } | |
15512 | } | |
15513 | ||
c906108c | 15514 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15515 | (definition) to create a type for the structure or union. Fill in |
15516 | the type's name and general properties; the members will not be | |
83655187 DE |
15517 | processed until process_structure_scope. A symbol table entry for |
15518 | the type will also not be done until process_structure_scope (assuming | |
15519 | the type has a name). | |
c906108c | 15520 | |
c767944b DJ |
15521 | NOTE: we need to call these functions regardless of whether or not the |
15522 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15523 | structure or union. This gets the type entered into our set of |
83655187 | 15524 | user defined types. */ |
c906108c | 15525 | |
f792889a | 15526 | static struct type * |
134d01f1 | 15527 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15528 | { |
5e22e966 | 15529 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15530 | struct type *type; |
15531 | struct attribute *attr; | |
15d034d0 | 15532 | const char *name; |
c906108c | 15533 | |
348e048f DE |
15534 | /* If the definition of this type lives in .debug_types, read that type. |
15535 | Don't follow DW_AT_specification though, that will take us back up | |
15536 | the chain and we want to go down. */ | |
052c8bb8 | 15537 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15538 | if (attr != nullptr) |
348e048f | 15539 | { |
ac9ec31b | 15540 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15541 | |
ac9ec31b | 15542 | /* The type's CU may not be the same as CU. |
02142a6c | 15543 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15544 | return set_die_type (die, type, cu); |
15545 | } | |
15546 | ||
c0dd20ea | 15547 | type = alloc_type (objfile); |
c906108c | 15548 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15549 | |
39cbfefa DJ |
15550 | name = dwarf2_name (die, cu); |
15551 | if (name != NULL) | |
c906108c | 15552 | { |
987504bb | 15553 | if (cu->language == language_cplus |
c44af4eb TT |
15554 | || cu->language == language_d |
15555 | || cu->language == language_rust) | |
63d06c5c | 15556 | { |
15d034d0 | 15557 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15558 | |
15559 | /* dwarf2_full_name might have already finished building the DIE's | |
15560 | type. If so, there is no need to continue. */ | |
15561 | if (get_die_type (die, cu) != NULL) | |
15562 | return get_die_type (die, cu); | |
15563 | ||
d0e39ea2 | 15564 | type->set_name (full_name); |
63d06c5c DC |
15565 | } |
15566 | else | |
15567 | { | |
d8151005 DJ |
15568 | /* The name is already allocated along with this objfile, so |
15569 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 15570 | type->set_name (name); |
63d06c5c | 15571 | } |
c906108c SS |
15572 | } |
15573 | ||
15574 | if (die->tag == DW_TAG_structure_type) | |
15575 | { | |
67607e24 | 15576 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15577 | } |
15578 | else if (die->tag == DW_TAG_union_type) | |
15579 | { | |
67607e24 | 15580 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
15581 | } |
15582 | else | |
15583 | { | |
67607e24 | 15584 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15585 | } |
15586 | ||
0cc2414c TT |
15587 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15588 | TYPE_DECLARED_CLASS (type) = 1; | |
15589 | ||
e35000a7 TBA |
15590 | /* Store the calling convention in the type if it's available in |
15591 | the die. Otherwise the calling convention remains set to | |
15592 | the default value DW_CC_normal. */ | |
15593 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15594 | if (attr != nullptr | |
15595 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15596 | { | |
15597 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15598 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15599 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15600 | } | |
15601 | ||
e142c38c | 15602 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15603 | if (attr != nullptr) |
c906108c | 15604 | { |
cd6c91b4 | 15605 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15606 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15607 | else | |
15608 | { | |
f8e89861 | 15609 | struct dynamic_prop prop; |
293e7e51 | 15610 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 15611 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
155bfbd3 JB |
15612 | TYPE_LENGTH (type) = 0; |
15613 | } | |
c906108c SS |
15614 | } |
15615 | else | |
15616 | { | |
15617 | TYPE_LENGTH (type) = 0; | |
15618 | } | |
15619 | ||
2b4424c3 TT |
15620 | maybe_set_alignment (cu, die, type); |
15621 | ||
5230b05a | 15622 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15623 | { |
5230b05a WT |
15624 | /* ICC<14 does not output the required DW_AT_declaration on |
15625 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15626 | TYPE_STUB (type) = 1; |
685b1105 JK |
15627 | } |
15628 | else | |
15629 | TYPE_STUB_SUPPORTED (type) = 1; | |
15630 | ||
dc718098 | 15631 | if (die_is_declaration (die, cu)) |
876cecd0 | 15632 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15633 | else if (attr == NULL && die->child == NULL |
15634 | && producer_is_realview (cu->producer)) | |
15635 | /* RealView does not output the required DW_AT_declaration | |
15636 | on incomplete types. */ | |
15637 | TYPE_STUB (type) = 1; | |
dc718098 | 15638 | |
c906108c SS |
15639 | /* We need to add the type field to the die immediately so we don't |
15640 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15641 | type within the structure itself. */ |
1c379e20 | 15642 | set_die_type (die, type, cu); |
c906108c | 15643 | |
7e314c57 JK |
15644 | /* set_die_type should be already done. */ |
15645 | set_descriptive_type (type, die, cu); | |
15646 | ||
c767944b DJ |
15647 | return type; |
15648 | } | |
15649 | ||
9c6a1327 TT |
15650 | static void handle_struct_member_die |
15651 | (struct die_info *child_die, | |
15652 | struct type *type, | |
15653 | struct field_info *fi, | |
15654 | std::vector<struct symbol *> *template_args, | |
15655 | struct dwarf2_cu *cu); | |
15656 | ||
15657 | /* A helper for handle_struct_member_die that handles | |
15658 | DW_TAG_variant_part. */ | |
15659 | ||
15660 | static void | |
15661 | handle_variant_part (struct die_info *die, struct type *type, | |
15662 | struct field_info *fi, | |
15663 | std::vector<struct symbol *> *template_args, | |
15664 | struct dwarf2_cu *cu) | |
15665 | { | |
15666 | variant_part_builder *new_part; | |
15667 | if (fi->current_variant_part == nullptr) | |
15668 | { | |
15669 | fi->variant_parts.emplace_back (); | |
15670 | new_part = &fi->variant_parts.back (); | |
15671 | } | |
15672 | else if (!fi->current_variant_part->processing_variant) | |
15673 | { | |
15674 | complaint (_("nested DW_TAG_variant_part seen " | |
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 | return; |
15679 | } | |
15680 | else | |
15681 | { | |
15682 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
15683 | current.variant_parts.emplace_back (); | |
15684 | new_part = ¤t.variant_parts.back (); | |
15685 | } | |
15686 | ||
15687 | /* When we recurse, we want callees to add to this new variant | |
15688 | part. */ | |
15689 | scoped_restore save_current_variant_part | |
15690 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
15691 | ||
15692 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15693 | if (discr == NULL) | |
15694 | { | |
15695 | /* It's a univariant form, an extension we support. */ | |
15696 | } | |
15697 | else if (discr->form_is_ref ()) | |
15698 | { | |
15699 | struct dwarf2_cu *target_cu = cu; | |
15700 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15701 | ||
15702 | new_part->discriminant_offset = target_die->sect_off; | |
15703 | } | |
15704 | else | |
15705 | { | |
15706 | complaint (_("DW_AT_discr does not have DIE reference form" | |
15707 | " - DIE at %s [in module %s]"), | |
15708 | sect_offset_str (die->sect_off), | |
5e22e966 | 15709 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15710 | } |
15711 | ||
15712 | for (die_info *child_die = die->child; | |
15713 | child_die != NULL; | |
15714 | child_die = child_die->sibling) | |
15715 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
15716 | } | |
15717 | ||
15718 | /* A helper for handle_struct_member_die that handles | |
15719 | DW_TAG_variant. */ | |
15720 | ||
15721 | static void | |
15722 | handle_variant (struct die_info *die, struct type *type, | |
15723 | struct field_info *fi, | |
15724 | std::vector<struct symbol *> *template_args, | |
15725 | struct dwarf2_cu *cu) | |
15726 | { | |
15727 | if (fi->current_variant_part == nullptr) | |
15728 | { | |
15729 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
15730 | "- DIE at %s [in module %s]"), | |
15731 | sect_offset_str (die->sect_off), | |
5e22e966 | 15732 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15733 | return; |
15734 | } | |
15735 | if (fi->current_variant_part->processing_variant) | |
15736 | { | |
15737 | complaint (_("nested DW_TAG_variant seen " | |
15738 | "- DIE at %s [in module %s]"), | |
15739 | sect_offset_str (die->sect_off), | |
5e22e966 | 15740 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15741 | return; |
15742 | } | |
15743 | ||
15744 | scoped_restore save_processing_variant | |
15745 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
15746 | true); | |
15747 | ||
15748 | fi->current_variant_part->variants.emplace_back (); | |
15749 | variant_field &variant = fi->current_variant_part->variants.back (); | |
15750 | variant.first_field = fi->fields.size (); | |
15751 | ||
15752 | /* In a variant we want to get the discriminant and also add a | |
15753 | field for our sole member child. */ | |
15754 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
15755 | if (discr == nullptr) | |
15756 | { | |
15757 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
15758 | if (discr == nullptr || DW_BLOCK (discr)->size == 0) | |
15759 | variant.default_branch = true; | |
15760 | else | |
15761 | variant.discr_list_data = DW_BLOCK (discr); | |
15762 | } | |
15763 | else | |
15764 | variant.discriminant_value = DW_UNSND (discr); | |
15765 | ||
15766 | for (die_info *variant_child = die->child; | |
15767 | variant_child != NULL; | |
15768 | variant_child = variant_child->sibling) | |
15769 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
15770 | ||
15771 | variant.last_field = fi->fields.size (); | |
15772 | } | |
15773 | ||
2ddeaf8a TT |
15774 | /* A helper for process_structure_scope that handles a single member |
15775 | DIE. */ | |
15776 | ||
15777 | static void | |
15778 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15779 | struct field_info *fi, | |
15780 | std::vector<struct symbol *> *template_args, | |
15781 | struct dwarf2_cu *cu) | |
15782 | { | |
15783 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 15784 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
15785 | { |
15786 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15787 | should be a DW_TAG_member that is a declaration, but | |
15788 | all versions of G++ as of this writing (so through at | |
15789 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15790 | tags for them instead. */ | |
15791 | dwarf2_add_field (fi, child_die, cu); | |
15792 | } | |
15793 | else if (child_die->tag == DW_TAG_subprogram) | |
15794 | { | |
15795 | /* Rust doesn't have member functions in the C++ sense. | |
15796 | However, it does emit ordinary functions as children | |
15797 | of a struct DIE. */ | |
15798 | if (cu->language == language_rust) | |
15799 | read_func_scope (child_die, cu); | |
15800 | else | |
15801 | { | |
15802 | /* C++ member function. */ | |
15803 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15804 | } | |
15805 | } | |
15806 | else if (child_die->tag == DW_TAG_inheritance) | |
15807 | { | |
15808 | /* C++ base class field. */ | |
15809 | dwarf2_add_field (fi, child_die, cu); | |
15810 | } | |
15811 | else if (type_can_define_types (child_die)) | |
15812 | dwarf2_add_type_defn (fi, child_die, cu); | |
15813 | else if (child_die->tag == DW_TAG_template_type_param | |
15814 | || child_die->tag == DW_TAG_template_value_param) | |
15815 | { | |
15816 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15817 | ||
15818 | if (arg != NULL) | |
15819 | template_args->push_back (arg); | |
15820 | } | |
9c6a1327 TT |
15821 | else if (child_die->tag == DW_TAG_variant_part) |
15822 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 15823 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 15824 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
15825 | } |
15826 | ||
c767944b DJ |
15827 | /* Finish creating a structure or union type, including filling in |
15828 | its members and creating a symbol for it. */ | |
15829 | ||
15830 | static void | |
15831 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15832 | { | |
5e22e966 | 15833 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 15834 | struct die_info *child_die; |
c767944b DJ |
15835 | struct type *type; |
15836 | ||
15837 | type = get_die_type (die, cu); | |
15838 | if (type == NULL) | |
15839 | type = read_structure_type (die, cu); | |
15840 | ||
3e1d3d8c | 15841 | bool has_template_parameters = false; |
e142c38c | 15842 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15843 | { |
15844 | struct field_info fi; | |
2f4732b0 | 15845 | std::vector<struct symbol *> template_args; |
c906108c | 15846 | |
639d11d3 | 15847 | child_die = die->child; |
c906108c SS |
15848 | |
15849 | while (child_die && child_die->tag) | |
15850 | { | |
2ddeaf8a | 15851 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 15852 | child_die = child_die->sibling; |
c906108c SS |
15853 | } |
15854 | ||
34eaf542 | 15855 | /* Attach template arguments to type. */ |
2f4732b0 | 15856 | if (!template_args.empty ()) |
34eaf542 | 15857 | { |
3e1d3d8c | 15858 | has_template_parameters = true; |
34eaf542 | 15859 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15860 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15861 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15862 | = XOBNEWVEC (&objfile->objfile_obstack, |
15863 | struct symbol *, | |
15864 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15865 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15866 | template_args.data (), |
34eaf542 TT |
15867 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15868 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15869 | } |
15870 | ||
c906108c | 15871 | /* Attach fields and member functions to the type. */ |
317f7127 | 15872 | if (fi.nfields () > 0) |
e7c27a73 | 15873 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15874 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15875 | { |
e7c27a73 | 15876 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15877 | |
c5aa993b | 15878 | /* Get the type which refers to the base class (possibly this |
c906108c | 15879 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15880 | class from the DW_AT_containing_type attribute. This use of |
15881 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15882 | |
e142c38c | 15883 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15884 | { |
e7c27a73 | 15885 | struct type *t = die_containing_type (die, cu); |
c906108c | 15886 | |
ae6ae975 | 15887 | set_type_vptr_basetype (type, t); |
c906108c SS |
15888 | if (type == t) |
15889 | { | |
c906108c SS |
15890 | int i; |
15891 | ||
15892 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 15893 | for (i = t->num_fields () - 1; |
c906108c SS |
15894 | i >= TYPE_N_BASECLASSES (t); |
15895 | --i) | |
15896 | { | |
0d5cff50 | 15897 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15898 | |
1168df01 | 15899 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15900 | { |
ae6ae975 | 15901 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15902 | break; |
15903 | } | |
15904 | } | |
15905 | ||
15906 | /* Complain if virtual function table field not found. */ | |
15907 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15908 | complaint (_("virtual function table pointer " |
3e43a32a | 15909 | "not found when defining class '%s'"), |
7d93a1e0 | 15910 | type->name () ? type->name () : ""); |
c906108c SS |
15911 | } |
15912 | else | |
15913 | { | |
ae6ae975 | 15914 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15915 | } |
15916 | } | |
f6235d4c | 15917 | else if (cu->producer |
61012eef | 15918 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15919 | { |
15920 | /* The IBM XLC compiler does not provide direct indication | |
15921 | of the containing type, but the vtable pointer is | |
15922 | always named __vfp. */ | |
15923 | ||
15924 | int i; | |
15925 | ||
1f704f76 | 15926 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
15927 | i >= TYPE_N_BASECLASSES (type); |
15928 | --i) | |
15929 | { | |
15930 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15931 | { | |
ae6ae975 DE |
15932 | set_type_vptr_fieldno (type, i); |
15933 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15934 | break; |
15935 | } | |
15936 | } | |
15937 | } | |
c906108c | 15938 | } |
98751a41 JK |
15939 | |
15940 | /* Copy fi.typedef_field_list linked list elements content into the | |
15941 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15942 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15943 | { |
be2daae6 | 15944 | int count = fi.typedef_field_list.size (); |
98751a41 | 15945 | |
a0d7a4ff | 15946 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15947 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15948 | = ((struct decl_field *) |
be2daae6 TT |
15949 | TYPE_ALLOC (type, |
15950 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15951 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15952 | |
be2daae6 TT |
15953 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15954 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15955 | } |
c767944b | 15956 | |
883fd55a KS |
15957 | /* Copy fi.nested_types_list linked list elements content into the |
15958 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15959 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15960 | { |
be2daae6 | 15961 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15962 | |
15963 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15964 | TYPE_NESTED_TYPES_ARRAY (type) | |
15965 | = ((struct decl_field *) | |
be2daae6 TT |
15966 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15967 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15968 | |
be2daae6 TT |
15969 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15970 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15971 | } |
c906108c | 15972 | } |
63d06c5c | 15973 | |
bb5ed363 | 15974 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15975 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15976 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15977 | |
90aeadfc DC |
15978 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15979 | snapshots) has been known to create a die giving a declaration | |
15980 | for a class that has, as a child, a die giving a definition for a | |
15981 | nested class. So we have to process our children even if the | |
15982 | current die is a declaration. Normally, of course, a declaration | |
15983 | won't have any children at all. */ | |
134d01f1 | 15984 | |
ca040673 DE |
15985 | child_die = die->child; |
15986 | ||
90aeadfc DC |
15987 | while (child_die != NULL && child_die->tag) |
15988 | { | |
15989 | if (child_die->tag == DW_TAG_member | |
15990 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15991 | || child_die->tag == DW_TAG_inheritance |
15992 | || child_die->tag == DW_TAG_template_value_param | |
15993 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15994 | { |
90aeadfc | 15995 | /* Do nothing. */ |
134d01f1 | 15996 | } |
90aeadfc DC |
15997 | else |
15998 | process_die (child_die, cu); | |
134d01f1 | 15999 | |
436c571c | 16000 | child_die = child_die->sibling; |
134d01f1 DJ |
16001 | } |
16002 | ||
fa4028e9 JB |
16003 | /* Do not consider external references. According to the DWARF standard, |
16004 | these DIEs are identified by the fact that they have no byte_size | |
16005 | attribute, and a declaration attribute. */ | |
16006 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16007 | || !die_is_declaration (die, cu) |
16008 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16009 | { |
16010 | struct symbol *sym = new_symbol (die, type, cu); | |
16011 | ||
16012 | if (has_template_parameters) | |
16013 | { | |
a776957c TT |
16014 | struct symtab *symtab; |
16015 | if (sym != nullptr) | |
16016 | symtab = symbol_symtab (sym); | |
16017 | else if (cu->line_header != nullptr) | |
16018 | { | |
16019 | /* Any related symtab will do. */ | |
16020 | symtab | |
7ba99d21 | 16021 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16022 | } |
16023 | else | |
16024 | { | |
16025 | symtab = nullptr; | |
16026 | complaint (_("could not find suitable " | |
16027 | "symtab for template parameter" | |
16028 | " - DIE at %s [in module %s]"), | |
16029 | sect_offset_str (die->sect_off), | |
16030 | objfile_name (objfile)); | |
16031 | } | |
16032 | ||
16033 | if (symtab != nullptr) | |
16034 | { | |
16035 | /* Make sure that the symtab is set on the new symbols. | |
16036 | Even though they don't appear in this symtab directly, | |
16037 | other parts of gdb assume that symbols do, and this is | |
16038 | reasonably true. */ | |
16039 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16040 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16041 | } | |
3e1d3d8c TT |
16042 | } |
16043 | } | |
134d01f1 DJ |
16044 | } |
16045 | ||
ed6acedd TT |
16046 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16047 | type, update TYPE using some information only available in DIE's | |
16048 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16049 | |
16050 | static void | |
16051 | update_enumeration_type_from_children (struct die_info *die, | |
16052 | struct type *type, | |
16053 | struct dwarf2_cu *cu) | |
16054 | { | |
60f7655a | 16055 | struct die_info *child_die; |
55426c9d JB |
16056 | int unsigned_enum = 1; |
16057 | int flag_enum = 1; | |
55426c9d | 16058 | |
8268c778 | 16059 | auto_obstack obstack; |
ed6acedd | 16060 | std::vector<struct field> fields; |
55426c9d | 16061 | |
60f7655a DE |
16062 | for (child_die = die->child; |
16063 | child_die != NULL && child_die->tag; | |
436c571c | 16064 | child_die = child_die->sibling) |
55426c9d JB |
16065 | { |
16066 | struct attribute *attr; | |
16067 | LONGEST value; | |
16068 | const gdb_byte *bytes; | |
16069 | struct dwarf2_locexpr_baton *baton; | |
16070 | const char *name; | |
60f7655a | 16071 | |
55426c9d JB |
16072 | if (child_die->tag != DW_TAG_enumerator) |
16073 | continue; | |
16074 | ||
16075 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16076 | if (attr == NULL) | |
16077 | continue; | |
16078 | ||
16079 | name = dwarf2_name (child_die, cu); | |
16080 | if (name == NULL) | |
16081 | name = "<anonymous enumerator>"; | |
16082 | ||
16083 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16084 | &value, &bytes, &baton); | |
16085 | if (value < 0) | |
16086 | { | |
16087 | unsigned_enum = 0; | |
16088 | flag_enum = 0; | |
16089 | } | |
55426c9d | 16090 | else |
edd45eb0 SM |
16091 | { |
16092 | if (count_one_bits_ll (value) >= 2) | |
16093 | flag_enum = 0; | |
edd45eb0 | 16094 | } |
55426c9d | 16095 | |
ed6acedd TT |
16096 | fields.emplace_back (); |
16097 | struct field &field = fields.back (); | |
16098 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16099 | SET_FIELD_ENUMVAL (field, value); | |
16100 | } | |
16101 | ||
16102 | if (!fields.empty ()) | |
16103 | { | |
5e33d5f4 | 16104 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16105 | type->set_fields |
16106 | ((struct field *) | |
16107 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16108 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16109 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16110 | } |
16111 | ||
16112 | if (unsigned_enum) | |
16113 | TYPE_UNSIGNED (type) = 1; | |
16114 | if (flag_enum) | |
16115 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16116 | } |
16117 | ||
134d01f1 DJ |
16118 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16119 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16120 | |
f792889a | 16121 | static struct type * |
134d01f1 | 16122 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16123 | { |
5e22e966 | 16124 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16125 | struct type *type; |
c906108c | 16126 | struct attribute *attr; |
0114d602 | 16127 | const char *name; |
134d01f1 | 16128 | |
348e048f DE |
16129 | /* If the definition of this type lives in .debug_types, read that type. |
16130 | Don't follow DW_AT_specification though, that will take us back up | |
16131 | the chain and we want to go down. */ | |
052c8bb8 | 16132 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16133 | if (attr != nullptr) |
348e048f | 16134 | { |
ac9ec31b | 16135 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16136 | |
ac9ec31b | 16137 | /* The type's CU may not be the same as CU. |
02142a6c | 16138 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16139 | return set_die_type (die, type, cu); |
16140 | } | |
16141 | ||
c906108c SS |
16142 | type = alloc_type (objfile); |
16143 | ||
67607e24 | 16144 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16145 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16146 | if (name != NULL) |
d0e39ea2 | 16147 | type->set_name (name); |
c906108c | 16148 | |
0626fc76 TT |
16149 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16150 | if (attr != NULL) | |
16151 | { | |
16152 | struct type *underlying_type = die_type (die, cu); | |
16153 | ||
16154 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16155 | } | |
16156 | ||
e142c38c | 16157 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16158 | if (attr != nullptr) |
c906108c SS |
16159 | { |
16160 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16161 | } | |
16162 | else | |
16163 | { | |
16164 | TYPE_LENGTH (type) = 0; | |
16165 | } | |
16166 | ||
2b4424c3 TT |
16167 | maybe_set_alignment (cu, die, type); |
16168 | ||
137033e9 JB |
16169 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16170 | declared as private in the package spec, and then defined only | |
16171 | inside the package body. Such types are known as Taft Amendment | |
16172 | Types. When another package uses such a type, an incomplete DIE | |
16173 | may be generated by the compiler. */ | |
02eb380e | 16174 | if (die_is_declaration (die, cu)) |
876cecd0 | 16175 | TYPE_STUB (type) = 1; |
02eb380e | 16176 | |
0626fc76 TT |
16177 | /* If this type has an underlying type that is not a stub, then we |
16178 | may use its attributes. We always use the "unsigned" attribute | |
16179 | in this situation, because ordinarily we guess whether the type | |
16180 | is unsigned -- but the guess can be wrong and the underlying type | |
16181 | can tell us the reality. However, we defer to a local size | |
16182 | attribute if one exists, because this lets the compiler override | |
16183 | the underlying type if needed. */ | |
16184 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16185 | { | |
9e7c9a03 HD |
16186 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16187 | underlying_type = check_typedef (underlying_type); | |
16188 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (underlying_type); | |
0626fc76 | 16189 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16190 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
2b4424c3 | 16191 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16192 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16193 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16194 | } |
16195 | ||
3d567982 TT |
16196 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16197 | ||
ed6acedd TT |
16198 | set_die_type (die, type, cu); |
16199 | ||
16200 | /* Finish the creation of this type by using the enum's children. | |
16201 | Note that, as usual, this must come after set_die_type to avoid | |
16202 | infinite recursion when trying to compute the names of the | |
16203 | enumerators. */ | |
16204 | update_enumeration_type_from_children (die, type, cu); | |
16205 | ||
16206 | return type; | |
134d01f1 DJ |
16207 | } |
16208 | ||
16209 | /* Given a pointer to a die which begins an enumeration, process all | |
16210 | the dies that define the members of the enumeration, and create the | |
16211 | symbol for the enumeration type. | |
16212 | ||
16213 | NOTE: We reverse the order of the element list. */ | |
16214 | ||
16215 | static void | |
16216 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16217 | { | |
f792889a | 16218 | struct type *this_type; |
134d01f1 | 16219 | |
f792889a DJ |
16220 | this_type = get_die_type (die, cu); |
16221 | if (this_type == NULL) | |
16222 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16223 | |
639d11d3 | 16224 | if (die->child != NULL) |
c906108c | 16225 | { |
9dc481d3 | 16226 | struct die_info *child_die; |
15d034d0 | 16227 | const char *name; |
9dc481d3 | 16228 | |
639d11d3 | 16229 | child_die = die->child; |
c906108c SS |
16230 | while (child_die && child_die->tag) |
16231 | { | |
16232 | if (child_die->tag != DW_TAG_enumerator) | |
16233 | { | |
e7c27a73 | 16234 | process_die (child_die, cu); |
c906108c SS |
16235 | } |
16236 | else | |
16237 | { | |
39cbfefa DJ |
16238 | name = dwarf2_name (child_die, cu); |
16239 | if (name) | |
ed6acedd | 16240 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16241 | } |
16242 | ||
436c571c | 16243 | child_die = child_die->sibling; |
c906108c | 16244 | } |
c906108c | 16245 | } |
134d01f1 | 16246 | |
6c83ed52 TT |
16247 | /* If we are reading an enum from a .debug_types unit, and the enum |
16248 | is a declaration, and the enum is not the signatured type in the | |
16249 | unit, then we do not want to add a symbol for it. Adding a | |
16250 | symbol would in some cases obscure the true definition of the | |
16251 | enum, giving users an incomplete type when the definition is | |
16252 | actually available. Note that we do not want to do this for all | |
16253 | enums which are just declarations, because C++0x allows forward | |
16254 | enum declarations. */ | |
3019eac3 | 16255 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16256 | && die_is_declaration (die, cu)) |
16257 | { | |
52dc124a | 16258 | struct signatured_type *sig_type; |
6c83ed52 | 16259 | |
c0f78cd4 | 16260 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16261 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16262 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16263 | return; |
16264 | } | |
16265 | ||
f792889a | 16266 | new_symbol (die, this_type, cu); |
c906108c SS |
16267 | } |
16268 | ||
16269 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16270 | the DIE's type field. For now, this only handles one dimensional | |
16271 | arrays. */ | |
16272 | ||
f792889a | 16273 | static struct type * |
e7c27a73 | 16274 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16275 | { |
5e22e966 | 16276 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16277 | struct die_info *child_die; |
7e314c57 | 16278 | struct type *type; |
c906108c | 16279 | struct type *element_type, *range_type, *index_type; |
c906108c | 16280 | struct attribute *attr; |
15d034d0 | 16281 | const char *name; |
a405673c | 16282 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16283 | unsigned int bit_stride = 0; |
c906108c | 16284 | |
e7c27a73 | 16285 | element_type = die_type (die, cu); |
c906108c | 16286 | |
7e314c57 JK |
16287 | /* The die_type call above may have already set the type for this DIE. */ |
16288 | type = get_die_type (die, cu); | |
16289 | if (type) | |
16290 | return type; | |
16291 | ||
dc53a7ad JB |
16292 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16293 | if (attr != NULL) | |
a405673c JB |
16294 | { |
16295 | int stride_ok; | |
293e7e51 | 16296 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
16297 | |
16298 | byte_stride_prop | |
16299 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16300 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16301 | prop_type); | |
a405673c JB |
16302 | if (!stride_ok) |
16303 | { | |
b98664d3 | 16304 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16305 | " - DIE at %s [in module %s]"), |
16306 | sect_offset_str (die->sect_off), | |
5e22e966 | 16307 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
16308 | /* Ignore this attribute. We will likely not be able to print |
16309 | arrays of this type correctly, but there is little we can do | |
16310 | to help if we cannot read the attribute's value. */ | |
16311 | byte_stride_prop = NULL; | |
16312 | } | |
16313 | } | |
dc53a7ad JB |
16314 | |
16315 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16316 | if (attr != NULL) | |
16317 | bit_stride = DW_UNSND (attr); | |
16318 | ||
c906108c SS |
16319 | /* Irix 6.2 native cc creates array types without children for |
16320 | arrays with unspecified length. */ | |
639d11d3 | 16321 | if (die->child == NULL) |
c906108c | 16322 | { |
46bf5051 | 16323 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16324 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16325 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16326 | byte_stride_prop, bit_stride); |
f792889a | 16327 | return set_die_type (die, type, cu); |
c906108c SS |
16328 | } |
16329 | ||
791afaa2 | 16330 | std::vector<struct type *> range_types; |
639d11d3 | 16331 | child_die = die->child; |
c906108c SS |
16332 | while (child_die && child_die->tag) |
16333 | { | |
16334 | if (child_die->tag == DW_TAG_subrange_type) | |
16335 | { | |
f792889a | 16336 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16337 | |
f792889a | 16338 | if (child_type != NULL) |
a02abb62 | 16339 | { |
0963b4bd MS |
16340 | /* The range type was succesfully read. Save it for the |
16341 | array type creation. */ | |
791afaa2 | 16342 | range_types.push_back (child_type); |
a02abb62 | 16343 | } |
c906108c | 16344 | } |
436c571c | 16345 | child_die = child_die->sibling; |
c906108c SS |
16346 | } |
16347 | ||
16348 | /* Dwarf2 dimensions are output from left to right, create the | |
16349 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16350 | |
c906108c | 16351 | type = element_type; |
7ca2d3a3 DL |
16352 | |
16353 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16354 | { | |
16355 | int i = 0; | |
9a619af0 | 16356 | |
791afaa2 | 16357 | while (i < range_types.size ()) |
dc53a7ad | 16358 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16359 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16360 | } |
16361 | else | |
16362 | { | |
791afaa2 | 16363 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16364 | while (ndim-- > 0) |
dc53a7ad | 16365 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16366 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16367 | } |
c906108c | 16368 | |
f5f8a009 EZ |
16369 | /* Understand Dwarf2 support for vector types (like they occur on |
16370 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16371 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16372 | custom vendor extension. The main difference between a regular | |
16373 | array and the vector variant is that vectors are passed by value | |
16374 | to functions. */ | |
e142c38c | 16375 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16376 | if (attr != nullptr) |
ea37ba09 | 16377 | make_vector_type (type); |
f5f8a009 | 16378 | |
dbc98a8b KW |
16379 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16380 | implementation may choose to implement triple vectors using this | |
16381 | attribute. */ | |
16382 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16383 | if (attr != nullptr) |
dbc98a8b KW |
16384 | { |
16385 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16386 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16387 | else | |
b98664d3 | 16388 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16389 | "than the total size of elements")); |
dbc98a8b KW |
16390 | } |
16391 | ||
39cbfefa DJ |
16392 | name = dwarf2_name (die, cu); |
16393 | if (name) | |
d0e39ea2 | 16394 | type->set_name (name); |
6e70227d | 16395 | |
2b4424c3 TT |
16396 | maybe_set_alignment (cu, die, type); |
16397 | ||
0963b4bd | 16398 | /* Install the type in the die. */ |
7e314c57 JK |
16399 | set_die_type (die, type, cu); |
16400 | ||
16401 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16402 | set_descriptive_type (type, die, cu); |
16403 | ||
7e314c57 | 16404 | return type; |
c906108c SS |
16405 | } |
16406 | ||
7ca2d3a3 | 16407 | static enum dwarf_array_dim_ordering |
6e70227d | 16408 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16409 | { |
16410 | struct attribute *attr; | |
16411 | ||
16412 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16413 | ||
435d3d88 | 16414 | if (attr != nullptr) |
aead7601 | 16415 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16416 | |
0963b4bd MS |
16417 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16418 | opposite order to the dwarf2 specification, but data is still | |
16419 | laid out as per normal fortran. | |
7ca2d3a3 | 16420 | |
0963b4bd MS |
16421 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16422 | version checking. */ | |
7ca2d3a3 | 16423 | |
905e0470 PM |
16424 | if (cu->language == language_fortran |
16425 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16426 | { |
16427 | return DW_ORD_row_major; | |
16428 | } | |
16429 | ||
6e70227d | 16430 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16431 | { |
16432 | case array_column_major: | |
16433 | return DW_ORD_col_major; | |
16434 | case array_row_major: | |
16435 | default: | |
16436 | return DW_ORD_row_major; | |
16437 | }; | |
16438 | } | |
16439 | ||
72019c9c | 16440 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16441 | the DIE's type field. */ |
72019c9c | 16442 | |
f792889a | 16443 | static struct type * |
72019c9c GM |
16444 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16445 | { | |
7e314c57 JK |
16446 | struct type *domain_type, *set_type; |
16447 | struct attribute *attr; | |
f792889a | 16448 | |
7e314c57 JK |
16449 | domain_type = die_type (die, cu); |
16450 | ||
16451 | /* The die_type call above may have already set the type for this DIE. */ | |
16452 | set_type = get_die_type (die, cu); | |
16453 | if (set_type) | |
16454 | return set_type; | |
16455 | ||
16456 | set_type = create_set_type (NULL, domain_type); | |
16457 | ||
16458 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16459 | if (attr != nullptr) |
d09039dd | 16460 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16461 | |
2b4424c3 TT |
16462 | maybe_set_alignment (cu, die, set_type); |
16463 | ||
f792889a | 16464 | return set_die_type (die, set_type, cu); |
72019c9c | 16465 | } |
7ca2d3a3 | 16466 | |
0971de02 TT |
16467 | /* A helper for read_common_block that creates a locexpr baton. |
16468 | SYM is the symbol which we are marking as computed. | |
16469 | COMMON_DIE is the DIE for the common block. | |
16470 | COMMON_LOC is the location expression attribute for the common | |
16471 | block itself. | |
16472 | MEMBER_LOC is the location expression attribute for the particular | |
16473 | member of the common block that we are processing. | |
16474 | CU is the CU from which the above come. */ | |
16475 | ||
16476 | static void | |
16477 | mark_common_block_symbol_computed (struct symbol *sym, | |
16478 | struct die_info *common_die, | |
16479 | struct attribute *common_loc, | |
16480 | struct attribute *member_loc, | |
16481 | struct dwarf2_cu *cu) | |
16482 | { | |
5e22e966 | 16483 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 16484 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
16485 | struct dwarf2_locexpr_baton *baton; |
16486 | gdb_byte *ptr; | |
16487 | unsigned int cu_off; | |
08feed99 | 16488 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
16489 | LONGEST offset = 0; |
16490 | ||
16491 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16492 | gdb_assert (common_loc->form_is_block ()); |
16493 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16494 | || member_loc->form_is_constant ()); |
0971de02 | 16495 | |
8d749320 | 16496 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 16497 | baton->per_objfile = per_objfile; |
0971de02 TT |
16498 | baton->per_cu = cu->per_cu; |
16499 | gdb_assert (baton->per_cu); | |
16500 | ||
16501 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16502 | ||
cd6c91b4 | 16503 | if (member_loc->form_is_constant ()) |
0971de02 | 16504 | { |
0826b30a | 16505 | offset = member_loc->constant_value (0); |
0971de02 TT |
16506 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
16507 | } | |
16508 | else | |
16509 | baton->size += DW_BLOCK (member_loc)->size; | |
16510 | ||
224c3ddb | 16511 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16512 | baton->data = ptr; |
16513 | ||
16514 | *ptr++ = DW_OP_call4; | |
9c541725 | 16515 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16516 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16517 | ptr += 4; | |
16518 | ||
cd6c91b4 | 16519 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16520 | { |
16521 | *ptr++ = DW_OP_addr; | |
16522 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16523 | ptr += cu->header.addr_size; | |
16524 | } | |
16525 | else | |
16526 | { | |
16527 | /* We have to copy the data here, because DW_OP_call4 will only | |
16528 | use a DW_AT_location attribute. */ | |
16529 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16530 | ptr += DW_BLOCK (member_loc)->size; | |
16531 | } | |
16532 | ||
16533 | *ptr++ = DW_OP_plus; | |
16534 | gdb_assert (ptr - baton->data == baton->size); | |
16535 | ||
0971de02 | 16536 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16537 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16538 | } |
16539 | ||
4357ac6c TT |
16540 | /* Create appropriate locally-scoped variables for all the |
16541 | DW_TAG_common_block entries. Also create a struct common_block | |
16542 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16543 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16544 | variable names. */ |
c906108c SS |
16545 | |
16546 | static void | |
e7c27a73 | 16547 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16548 | { |
0971de02 TT |
16549 | struct attribute *attr; |
16550 | ||
16551 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 16552 | if (attr != nullptr) |
0971de02 TT |
16553 | { |
16554 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 16555 | if (attr->form_is_block ()) |
0971de02 TT |
16556 | { |
16557 | /* Ok. */ | |
16558 | } | |
cd6c91b4 | 16559 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
16560 | { |
16561 | dwarf2_complex_location_expr_complaint (); | |
16562 | attr = NULL; | |
16563 | } | |
16564 | else | |
16565 | { | |
16566 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16567 | "common block member"); | |
16568 | attr = NULL; | |
16569 | } | |
16570 | } | |
16571 | ||
639d11d3 | 16572 | if (die->child != NULL) |
c906108c | 16573 | { |
5e22e966 | 16574 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
16575 | struct die_info *child_die; |
16576 | size_t n_entries = 0, size; | |
16577 | struct common_block *common_block; | |
16578 | struct symbol *sym; | |
74ac6d43 | 16579 | |
4357ac6c TT |
16580 | for (child_die = die->child; |
16581 | child_die && child_die->tag; | |
436c571c | 16582 | child_die = child_die->sibling) |
4357ac6c TT |
16583 | ++n_entries; |
16584 | ||
16585 | size = (sizeof (struct common_block) | |
16586 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16587 | common_block |
16588 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16589 | size); | |
4357ac6c TT |
16590 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16591 | common_block->n_entries = 0; | |
16592 | ||
16593 | for (child_die = die->child; | |
16594 | child_die && child_die->tag; | |
436c571c | 16595 | child_die = child_die->sibling) |
4357ac6c TT |
16596 | { |
16597 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16598 | symbol scope. */ | |
e7c27a73 | 16599 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16600 | if (sym != NULL) |
16601 | { | |
16602 | struct attribute *member_loc; | |
16603 | ||
16604 | common_block->contents[common_block->n_entries++] = sym; | |
16605 | ||
16606 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16607 | cu); | |
16608 | if (member_loc) | |
16609 | { | |
16610 | /* GDB has handled this for a long time, but it is | |
16611 | not specified by DWARF. It seems to have been | |
16612 | emitted by gfortran at least as recently as: | |
16613 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16614 | complaint (_("Variable in common block has " |
0971de02 | 16615 | "DW_AT_data_member_location " |
9d8780f0 SM |
16616 | "- DIE at %s [in module %s]"), |
16617 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16618 | objfile_name (objfile)); |
0971de02 | 16619 | |
cd6c91b4 | 16620 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16621 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16622 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16623 | || member_loc->form_is_block ()) |
0971de02 | 16624 | { |
435d3d88 | 16625 | if (attr != nullptr) |
0971de02 TT |
16626 | mark_common_block_symbol_computed (sym, die, attr, |
16627 | member_loc, cu); | |
16628 | } | |
16629 | else | |
16630 | dwarf2_complex_location_expr_complaint (); | |
16631 | } | |
16632 | } | |
c906108c | 16633 | } |
4357ac6c TT |
16634 | |
16635 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16636 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16637 | } |
16638 | } | |
16639 | ||
0114d602 | 16640 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16641 | |
0114d602 DJ |
16642 | static struct type * |
16643 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16644 | { |
5e22e966 | 16645 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16646 | const char *previous_prefix, *name; |
9219021c | 16647 | int is_anonymous; |
0114d602 DJ |
16648 | struct type *type; |
16649 | ||
16650 | /* For extensions, reuse the type of the original namespace. */ | |
16651 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16652 | { | |
16653 | struct die_info *ext_die; | |
16654 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16655 | |
0114d602 DJ |
16656 | ext_die = dwarf2_extension (die, &ext_cu); |
16657 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16658 | |
16659 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16660 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16661 | return set_die_type (die, type, cu); |
16662 | } | |
9219021c | 16663 | |
e142c38c | 16664 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16665 | |
16666 | /* Now build the name of the current namespace. */ | |
16667 | ||
0114d602 DJ |
16668 | previous_prefix = determine_prefix (die, cu); |
16669 | if (previous_prefix[0] != '\0') | |
16670 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16671 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16672 | |
16673 | /* Create the type. */ | |
19f392bc | 16674 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16675 | |
60531b24 | 16676 | return set_die_type (die, type, cu); |
0114d602 DJ |
16677 | } |
16678 | ||
22cee43f | 16679 | /* Read a namespace scope. */ |
0114d602 DJ |
16680 | |
16681 | static void | |
16682 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16683 | { | |
5e22e966 | 16684 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16685 | int is_anonymous; |
9219021c | 16686 | |
5c4e30ca DC |
16687 | /* Add a symbol associated to this if we haven't seen the namespace |
16688 | before. Also, add a using directive if it's an anonymous | |
16689 | namespace. */ | |
9219021c | 16690 | |
f2f0e013 | 16691 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16692 | { |
16693 | struct type *type; | |
16694 | ||
0114d602 | 16695 | type = read_type_die (die, cu); |
e7c27a73 | 16696 | new_symbol (die, type, cu); |
5c4e30ca | 16697 | |
e8e80198 | 16698 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16699 | if (is_anonymous) |
0114d602 DJ |
16700 | { |
16701 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16702 | |
eb1e02fd | 16703 | std::vector<const char *> excludes; |
804d2729 | 16704 | add_using_directive (using_directives (cu), |
7d93a1e0 | 16705 | previous_prefix, type->name (), NULL, |
eb1e02fd | 16706 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16707 | } |
5c4e30ca | 16708 | } |
9219021c | 16709 | |
639d11d3 | 16710 | if (die->child != NULL) |
d9fa45fe | 16711 | { |
639d11d3 | 16712 | struct die_info *child_die = die->child; |
6e70227d | 16713 | |
d9fa45fe DC |
16714 | while (child_die && child_die->tag) |
16715 | { | |
e7c27a73 | 16716 | process_die (child_die, cu); |
436c571c | 16717 | child_die = child_die->sibling; |
d9fa45fe DC |
16718 | } |
16719 | } | |
38d518c9 EZ |
16720 | } |
16721 | ||
f55ee35c JK |
16722 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16723 | imported module. Still we need that type as local Fortran "use ... only" | |
16724 | declaration imports depend on the created type in determine_prefix. */ | |
16725 | ||
16726 | static struct type * | |
16727 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16728 | { | |
5e22e966 | 16729 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 16730 | const char *module_name; |
f55ee35c JK |
16731 | struct type *type; |
16732 | ||
16733 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16734 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16735 | |
f55ee35c JK |
16736 | return set_die_type (die, type, cu); |
16737 | } | |
16738 | ||
5d7cb8df JK |
16739 | /* Read a Fortran module. */ |
16740 | ||
16741 | static void | |
16742 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16743 | { | |
16744 | struct die_info *child_die = die->child; | |
530e8392 KB |
16745 | struct type *type; |
16746 | ||
16747 | type = read_type_die (die, cu); | |
16748 | new_symbol (die, type, cu); | |
5d7cb8df | 16749 | |
5d7cb8df JK |
16750 | while (child_die && child_die->tag) |
16751 | { | |
16752 | process_die (child_die, cu); | |
436c571c | 16753 | child_die = child_die->sibling; |
5d7cb8df JK |
16754 | } |
16755 | } | |
16756 | ||
38d518c9 EZ |
16757 | /* Return the name of the namespace represented by DIE. Set |
16758 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16759 | namespace. */ | |
16760 | ||
16761 | static const char * | |
e142c38c | 16762 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16763 | { |
16764 | struct die_info *current_die; | |
16765 | const char *name = NULL; | |
16766 | ||
16767 | /* Loop through the extensions until we find a name. */ | |
16768 | ||
16769 | for (current_die = die; | |
16770 | current_die != NULL; | |
f2f0e013 | 16771 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16772 | { |
96553a0c DE |
16773 | /* We don't use dwarf2_name here so that we can detect the absence |
16774 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16775 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16776 | |
38d518c9 EZ |
16777 | if (name != NULL) |
16778 | break; | |
16779 | } | |
16780 | ||
16781 | /* Is it an anonymous namespace? */ | |
16782 | ||
16783 | *is_anonymous = (name == NULL); | |
16784 | if (*is_anonymous) | |
2b1dbab0 | 16785 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16786 | |
16787 | return name; | |
d9fa45fe DC |
16788 | } |
16789 | ||
c906108c SS |
16790 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16791 | the user defined type vector. */ | |
16792 | ||
f792889a | 16793 | static struct type * |
e7c27a73 | 16794 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16795 | { |
5e22e966 | 16796 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 16797 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16798 | struct type *type; |
8b2dbe47 KB |
16799 | struct attribute *attr_byte_size; |
16800 | struct attribute *attr_address_class; | |
16801 | int byte_size, addr_class; | |
7e314c57 JK |
16802 | struct type *target_type; |
16803 | ||
16804 | target_type = die_type (die, cu); | |
c906108c | 16805 | |
7e314c57 JK |
16806 | /* The die_type call above may have already set the type for this DIE. */ |
16807 | type = get_die_type (die, cu); | |
16808 | if (type) | |
16809 | return type; | |
16810 | ||
16811 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16812 | |
e142c38c | 16813 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16814 | if (attr_byte_size) |
16815 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16816 | else |
8b2dbe47 KB |
16817 | byte_size = cu_header->addr_size; |
16818 | ||
e142c38c | 16819 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16820 | if (attr_address_class) |
16821 | addr_class = DW_UNSND (attr_address_class); | |
16822 | else | |
16823 | addr_class = DW_ADDR_none; | |
16824 | ||
2b4424c3 TT |
16825 | ULONGEST alignment = get_alignment (cu, die); |
16826 | ||
16827 | /* If the pointer size, alignment, or address class is different | |
16828 | than the default, create a type variant marked as such and set | |
16829 | the length accordingly. */ | |
16830 | if (TYPE_LENGTH (type) != byte_size | |
16831 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16832 | && alignment != TYPE_RAW_ALIGN (type)) | |
16833 | || addr_class != DW_ADDR_none) | |
c906108c | 16834 | { |
5e2b427d | 16835 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16836 | { |
16837 | int type_flags; | |
16838 | ||
849957d9 | 16839 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16840 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16841 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16842 | == 0); | |
8b2dbe47 KB |
16843 | type = make_type_with_address_space (type, type_flags); |
16844 | } | |
16845 | else if (TYPE_LENGTH (type) != byte_size) | |
16846 | { | |
b98664d3 | 16847 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16848 | } |
2b4424c3 TT |
16849 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16850 | { | |
b98664d3 | 16851 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16852 | " - DIE at %s [in module %s]"), |
16853 | sect_offset_str (die->sect_off), | |
5e22e966 | 16854 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 16855 | } |
6e70227d | 16856 | else |
9a619af0 MS |
16857 | { |
16858 | /* Should we also complain about unhandled address classes? */ | |
16859 | } | |
c906108c | 16860 | } |
8b2dbe47 KB |
16861 | |
16862 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16863 | set_type_align (type, alignment); |
f792889a | 16864 | return set_die_type (die, type, cu); |
c906108c SS |
16865 | } |
16866 | ||
16867 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16868 | the user defined type vector. */ | |
16869 | ||
f792889a | 16870 | static struct type * |
e7c27a73 | 16871 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16872 | { |
16873 | struct type *type; | |
16874 | struct type *to_type; | |
16875 | struct type *domain; | |
16876 | ||
e7c27a73 DJ |
16877 | to_type = die_type (die, cu); |
16878 | domain = die_containing_type (die, cu); | |
0d5de010 | 16879 | |
7e314c57 JK |
16880 | /* The calls above may have already set the type for this DIE. */ |
16881 | type = get_die_type (die, cu); | |
16882 | if (type) | |
16883 | return type; | |
16884 | ||
78134374 | 16885 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 16886 | type = lookup_methodptr_type (to_type); |
78134374 | 16887 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 16888 | { |
5e22e966 | 16889 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
16890 | |
16891 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 16892 | to_type->fields (), to_type->num_fields (), |
7078baeb TT |
16893 | TYPE_VARARGS (to_type)); |
16894 | type = lookup_methodptr_type (new_type); | |
16895 | } | |
0d5de010 DJ |
16896 | else |
16897 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16898 | |
f792889a | 16899 | return set_die_type (die, type, cu); |
c906108c SS |
16900 | } |
16901 | ||
4297a3f0 | 16902 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16903 | the user defined type vector. */ |
16904 | ||
f792889a | 16905 | static struct type * |
4297a3f0 AV |
16906 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16907 | enum type_code refcode) | |
c906108c | 16908 | { |
e7c27a73 | 16909 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16910 | struct type *type, *target_type; |
c906108c SS |
16911 | struct attribute *attr; |
16912 | ||
4297a3f0 AV |
16913 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16914 | ||
7e314c57 JK |
16915 | target_type = die_type (die, cu); |
16916 | ||
16917 | /* The die_type call above may have already set the type for this DIE. */ | |
16918 | type = get_die_type (die, cu); | |
16919 | if (type) | |
16920 | return type; | |
16921 | ||
4297a3f0 | 16922 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16923 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16924 | if (attr != nullptr) |
c906108c SS |
16925 | { |
16926 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16927 | } | |
16928 | else | |
16929 | { | |
107d2387 | 16930 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16931 | } |
2b4424c3 | 16932 | maybe_set_alignment (cu, die, type); |
f792889a | 16933 | return set_die_type (die, type, cu); |
c906108c SS |
16934 | } |
16935 | ||
cf363f18 MW |
16936 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16937 | outputs DWARF type qualifiers that apply to an array, not the | |
16938 | element type. But GDB relies on the array element type to carry | |
16939 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16940 | specification. */ | |
16941 | ||
16942 | static struct type * | |
16943 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16944 | struct type *base_type, int cnst, int voltl) | |
16945 | { | |
16946 | struct type *el_type, *inner_array; | |
16947 | ||
16948 | base_type = copy_type (base_type); | |
16949 | inner_array = base_type; | |
16950 | ||
78134374 | 16951 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
16952 | { |
16953 | TYPE_TARGET_TYPE (inner_array) = | |
16954 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16955 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16956 | } | |
16957 | ||
16958 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16959 | cnst |= TYPE_CONST (el_type); | |
16960 | voltl |= TYPE_VOLATILE (el_type); | |
16961 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16962 | ||
16963 | return set_die_type (die, base_type, cu); | |
16964 | } | |
16965 | ||
f792889a | 16966 | static struct type * |
e7c27a73 | 16967 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16968 | { |
f792889a | 16969 | struct type *base_type, *cv_type; |
c906108c | 16970 | |
e7c27a73 | 16971 | base_type = die_type (die, cu); |
7e314c57 JK |
16972 | |
16973 | /* The die_type call above may have already set the type for this DIE. */ | |
16974 | cv_type = get_die_type (die, cu); | |
16975 | if (cv_type) | |
16976 | return cv_type; | |
16977 | ||
2f608a3a KW |
16978 | /* In case the const qualifier is applied to an array type, the element type |
16979 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 16980 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 16981 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16982 | |
f792889a DJ |
16983 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16984 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16985 | } |
16986 | ||
f792889a | 16987 | static struct type * |
e7c27a73 | 16988 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16989 | { |
f792889a | 16990 | struct type *base_type, *cv_type; |
c906108c | 16991 | |
e7c27a73 | 16992 | base_type = die_type (die, cu); |
7e314c57 JK |
16993 | |
16994 | /* The die_type call above may have already set the type for this DIE. */ | |
16995 | cv_type = get_die_type (die, cu); | |
16996 | if (cv_type) | |
16997 | return cv_type; | |
16998 | ||
cf363f18 MW |
16999 | /* In case the volatile qualifier is applied to an array type, the |
17000 | element type is so qualified, not the array type (section 6.7.3 | |
17001 | of C99). */ | |
78134374 | 17002 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17003 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17004 | ||
f792889a DJ |
17005 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17006 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17007 | } |
17008 | ||
06d66ee9 TT |
17009 | /* Handle DW_TAG_restrict_type. */ |
17010 | ||
17011 | static struct type * | |
17012 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17013 | { | |
17014 | struct type *base_type, *cv_type; | |
17015 | ||
17016 | base_type = die_type (die, cu); | |
17017 | ||
17018 | /* The die_type call above may have already set the type for this DIE. */ | |
17019 | cv_type = get_die_type (die, cu); | |
17020 | if (cv_type) | |
17021 | return cv_type; | |
17022 | ||
17023 | cv_type = make_restrict_type (base_type); | |
17024 | return set_die_type (die, cv_type, cu); | |
17025 | } | |
17026 | ||
a2c2acaf MW |
17027 | /* Handle DW_TAG_atomic_type. */ |
17028 | ||
17029 | static struct type * | |
17030 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17031 | { | |
17032 | struct type *base_type, *cv_type; | |
17033 | ||
17034 | base_type = die_type (die, cu); | |
17035 | ||
17036 | /* The die_type call above may have already set the type for this DIE. */ | |
17037 | cv_type = get_die_type (die, cu); | |
17038 | if (cv_type) | |
17039 | return cv_type; | |
17040 | ||
17041 | cv_type = make_atomic_type (base_type); | |
17042 | return set_die_type (die, cv_type, cu); | |
17043 | } | |
17044 | ||
c906108c SS |
17045 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17046 | the user defined type vector. It isn't really a user defined type, | |
17047 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17048 | attribute to reference it. */ | |
17049 | ||
f792889a | 17050 | static struct type * |
e7c27a73 | 17051 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17052 | { |
5e22e966 | 17053 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17054 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17055 | struct type *type, *range_type, *index_type, *char_type; |
17056 | struct attribute *attr; | |
216a7e6b AB |
17057 | struct dynamic_prop prop; |
17058 | bool length_is_constant = true; | |
17059 | LONGEST length; | |
17060 | ||
17061 | /* There are a couple of places where bit sizes might be made use of | |
17062 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17063 | of make use of these. Handling bit sizes that are a multiple of the | |
17064 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17065 | with that problem when we have to. Warn about these attributes being | |
17066 | unsupported, then parse the type and ignore them like we always | |
17067 | have. */ | |
17068 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17069 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17070 | { | |
17071 | static bool warning_printed = false; | |
17072 | if (!warning_printed) | |
17073 | { | |
17074 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17075 | "currently supported on DW_TAG_string_type.")); | |
17076 | warning_printed = true; | |
17077 | } | |
17078 | } | |
c906108c | 17079 | |
e142c38c | 17080 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17081 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17082 | { |
17083 | /* The string length describes the location at which the length of | |
17084 | the string can be found. The size of the length field can be | |
17085 | specified with one of the attributes below. */ | |
17086 | struct type *prop_type; | |
17087 | struct attribute *len | |
17088 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17089 | if (len == nullptr) | |
17090 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17091 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17092 | { |
17093 | /* Pass 0 as the default as we know this attribute is constant | |
17094 | and the default value will not be returned. */ | |
0826b30a | 17095 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17096 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17097 | } |
17098 | else | |
17099 | { | |
17100 | /* If the size is not specified then we assume it is the size of | |
17101 | an address on this target. */ | |
293e7e51 | 17102 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17103 | } |
17104 | ||
17105 | /* Convert the attribute into a dynamic property. */ | |
17106 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17107 | length = 1; | |
17108 | else | |
17109 | length_is_constant = false; | |
17110 | } | |
17111 | else if (attr != nullptr) | |
17112 | { | |
17113 | /* This DW_AT_string_length just contains the length with no | |
17114 | indirection. There's no need to create a dynamic property in this | |
17115 | case. Pass 0 for the default value as we know it will not be | |
17116 | returned in this case. */ | |
0826b30a | 17117 | length = attr->constant_value (0); |
216a7e6b AB |
17118 | } |
17119 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17120 | { |
216a7e6b | 17121 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17122 | length = attr->constant_value (1); |
c906108c SS |
17123 | } |
17124 | else | |
17125 | { | |
216a7e6b AB |
17126 | /* Use 1 as a fallback length if we have nothing else. */ |
17127 | length = 1; | |
c906108c | 17128 | } |
6ccb9162 | 17129 | |
46bf5051 | 17130 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17131 | if (length_is_constant) |
17132 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17133 | else | |
17134 | { | |
17135 | struct dynamic_prop low_bound; | |
17136 | ||
17137 | low_bound.kind = PROP_CONST; | |
17138 | low_bound.data.const_val = 1; | |
17139 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
17140 | } | |
3b7538c0 UW |
17141 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17142 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17143 | |
f792889a | 17144 | return set_die_type (die, type, cu); |
c906108c SS |
17145 | } |
17146 | ||
4d804846 JB |
17147 | /* Assuming that DIE corresponds to a function, returns nonzero |
17148 | if the function is prototyped. */ | |
17149 | ||
17150 | static int | |
17151 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17152 | { | |
17153 | struct attribute *attr; | |
17154 | ||
17155 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17156 | if (attr && (DW_UNSND (attr) != 0)) | |
17157 | return 1; | |
17158 | ||
17159 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17160 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17161 | languages that allow unprototyped functions (Eg: Objective C). |
17162 | For all other languages, assume that functions are always | |
17163 | prototyped. */ | |
17164 | if (cu->language != language_c | |
17165 | && cu->language != language_objc | |
17166 | && cu->language != language_opencl) | |
17167 | return 1; | |
17168 | ||
17169 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17170 | prototyped and unprototyped functions; default to prototyped, | |
17171 | since that is more common in modern code (and RealView warns | |
17172 | about unprototyped functions). */ | |
17173 | if (producer_is_realview (cu->producer)) | |
17174 | return 1; | |
17175 | ||
17176 | return 0; | |
17177 | } | |
17178 | ||
c906108c SS |
17179 | /* Handle DIES due to C code like: |
17180 | ||
17181 | struct foo | |
c5aa993b JM |
17182 | { |
17183 | int (*funcp)(int a, long l); | |
17184 | int b; | |
17185 | }; | |
c906108c | 17186 | |
0963b4bd | 17187 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17188 | |
f792889a | 17189 | static struct type * |
e7c27a73 | 17190 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17191 | { |
5e22e966 | 17192 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17193 | struct type *type; /* Type that this function returns. */ |
17194 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17195 | struct attribute *attr; |
17196 | ||
e7c27a73 | 17197 | type = die_type (die, cu); |
7e314c57 JK |
17198 | |
17199 | /* The die_type call above may have already set the type for this DIE. */ | |
17200 | ftype = get_die_type (die, cu); | |
17201 | if (ftype) | |
17202 | return ftype; | |
17203 | ||
0c8b41f1 | 17204 | ftype = lookup_function_type (type); |
c906108c | 17205 | |
4d804846 | 17206 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17207 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17208 | |
c055b101 CV |
17209 | /* Store the calling convention in the type if it's available in |
17210 | the subroutine die. Otherwise set the calling convention to | |
17211 | the default value DW_CC_normal. */ | |
17212 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17213 | if (attr != nullptr |
17214 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17215 | TYPE_CALLING_CONVENTION (ftype) | |
17216 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17217 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17218 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17219 | else | |
17220 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17221 | |
743649fd MW |
17222 | /* Record whether the function returns normally to its caller or not |
17223 | if the DWARF producer set that information. */ | |
17224 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17225 | if (attr && (DW_UNSND (attr) != 0)) | |
17226 | TYPE_NO_RETURN (ftype) = 1; | |
17227 | ||
76c10ea2 GM |
17228 | /* We need to add the subroutine type to the die immediately so |
17229 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17230 | declared as the same subroutine type. */ |
76c10ea2 | 17231 | set_die_type (die, ftype, cu); |
6e70227d | 17232 | |
639d11d3 | 17233 | if (die->child != NULL) |
c906108c | 17234 | { |
bb5ed363 | 17235 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17236 | struct die_info *child_die; |
8072405b | 17237 | int nparams, iparams; |
c906108c SS |
17238 | |
17239 | /* Count the number of parameters. | |
17240 | FIXME: GDB currently ignores vararg functions, but knows about | |
17241 | vararg member functions. */ | |
8072405b | 17242 | nparams = 0; |
639d11d3 | 17243 | child_die = die->child; |
c906108c SS |
17244 | while (child_die && child_die->tag) |
17245 | { | |
17246 | if (child_die->tag == DW_TAG_formal_parameter) | |
17247 | nparams++; | |
17248 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17249 | TYPE_VARARGS (ftype) = 1; |
436c571c | 17250 | child_die = child_die->sibling; |
c906108c SS |
17251 | } |
17252 | ||
17253 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17254 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17255 | ftype->set_fields |
17256 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17257 | |
8072405b JK |
17258 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17259 | even if we error out during the parameters reading below. */ | |
17260 | for (iparams = 0; iparams < nparams; iparams++) | |
17261 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17262 | ||
17263 | iparams = 0; | |
639d11d3 | 17264 | child_die = die->child; |
c906108c SS |
17265 | while (child_die && child_die->tag) |
17266 | { | |
17267 | if (child_die->tag == DW_TAG_formal_parameter) | |
17268 | { | |
3ce3b1ba PA |
17269 | struct type *arg_type; |
17270 | ||
17271 | /* DWARF version 2 has no clean way to discern C++ | |
17272 | static and non-static member functions. G++ helps | |
17273 | GDB by marking the first parameter for non-static | |
17274 | member functions (which is the this pointer) as | |
17275 | artificial. We pass this information to | |
17276 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17277 | ||
17278 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17279 | 4.5 does not yet generate. */ | |
e142c38c | 17280 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17281 | if (attr != nullptr) |
c906108c SS |
17282 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17283 | else | |
9c37b5ae | 17284 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17285 | arg_type = die_type (child_die, cu); |
17286 | ||
17287 | /* RealView does not mark THIS as const, which the testsuite | |
17288 | expects. GCC marks THIS as const in method definitions, | |
17289 | but not in the class specifications (GCC PR 43053). */ | |
17290 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17291 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17292 | { | |
17293 | int is_this = 0; | |
17294 | struct dwarf2_cu *arg_cu = cu; | |
17295 | const char *name = dwarf2_name (child_die, cu); | |
17296 | ||
17297 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17298 | if (attr != nullptr) |
3ce3b1ba PA |
17299 | { |
17300 | /* If the compiler emits this, use it. */ | |
17301 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17302 | is_this = 1; | |
17303 | } | |
17304 | else if (name && strcmp (name, "this") == 0) | |
17305 | /* Function definitions will have the argument names. */ | |
17306 | is_this = 1; | |
17307 | else if (name == NULL && iparams == 0) | |
17308 | /* Declarations may not have the names, so like | |
17309 | elsewhere in GDB, assume an artificial first | |
17310 | argument is "this". */ | |
17311 | is_this = 1; | |
17312 | ||
17313 | if (is_this) | |
17314 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17315 | arg_type, 0); | |
17316 | } | |
17317 | ||
17318 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17319 | iparams++; |
17320 | } | |
436c571c | 17321 | child_die = child_die->sibling; |
c906108c SS |
17322 | } |
17323 | } | |
17324 | ||
76c10ea2 | 17325 | return ftype; |
c906108c SS |
17326 | } |
17327 | ||
f792889a | 17328 | static struct type * |
e7c27a73 | 17329 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17330 | { |
5e22e966 | 17331 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17332 | const char *name = NULL; |
3c8e0968 | 17333 | struct type *this_type, *target_type; |
c906108c | 17334 | |
94af9270 | 17335 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17336 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17337 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17338 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17339 | target_type = die_type (die, cu); |
17340 | if (target_type != this_type) | |
17341 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17342 | else | |
17343 | { | |
17344 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17345 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17346 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17347 | "- DIE at %s [in module %s]"), |
17348 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17349 | TYPE_TARGET_TYPE (this_type) = NULL; |
17350 | } | |
e4003a34 TV |
17351 | if (name == NULL) |
17352 | { | |
17353 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17354 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17355 | Handle these by just returning the target type, rather than | |
17356 | constructing an anonymous typedef type and trying to handle this | |
17357 | elsewhere. */ | |
17358 | set_die_type (die, target_type, cu); | |
17359 | return target_type; | |
17360 | } | |
f792889a | 17361 | return this_type; |
c906108c SS |
17362 | } |
17363 | ||
9b790ce7 UW |
17364 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17365 | (which may be different from NAME) to the architecture back-end to allow | |
17366 | it to guess the correct format if necessary. */ | |
17367 | ||
17368 | static struct type * | |
17369 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17370 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 17371 | { |
08feed99 | 17372 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
17373 | const struct floatformat **format; |
17374 | struct type *type; | |
17375 | ||
17376 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17377 | if (format) | |
103a685e | 17378 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17379 | else |
77b7c781 | 17380 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17381 | |
17382 | return type; | |
17383 | } | |
17384 | ||
eb77c9df AB |
17385 | /* Allocate an integer type of size BITS and name NAME. */ |
17386 | ||
17387 | static struct type * | |
17388 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17389 | int bits, int unsigned_p, const char *name) | |
17390 | { | |
17391 | struct type *type; | |
17392 | ||
17393 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17394 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17395 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17396 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17397 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17398 | type = objfile_type (objfile)->builtin_void; |
17399 | else | |
17400 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17401 | ||
17402 | return type; | |
17403 | } | |
17404 | ||
8bdc1658 AB |
17405 | /* Initialise and return a floating point type of size BITS suitable for |
17406 | use as a component of a complex number. The NAME_HINT is passed through | |
17407 | when initialising the floating point type and is the name of the complex | |
17408 | type. | |
17409 | ||
17410 | As DWARF doesn't currently provide an explicit name for the components | |
17411 | of a complex number, but it can be helpful to have these components | |
17412 | named, we try to select a suitable name based on the size of the | |
17413 | component. */ | |
17414 | static struct type * | |
17415 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17416 | struct objfile *objfile, | |
103a685e TT |
17417 | int bits, const char *name_hint, |
17418 | enum bfd_endian byte_order) | |
8bdc1658 | 17419 | { |
08feed99 | 17420 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
17421 | struct type *tt = nullptr; |
17422 | ||
35add35e AB |
17423 | /* Try to find a suitable floating point builtin type of size BITS. |
17424 | We're going to use the name of this type as the name for the complex | |
17425 | target type that we are about to create. */ | |
1db455a7 | 17426 | switch (cu->language) |
8bdc1658 | 17427 | { |
1db455a7 AB |
17428 | case language_fortran: |
17429 | switch (bits) | |
17430 | { | |
17431 | case 32: | |
17432 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17433 | break; | |
17434 | case 64: | |
17435 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17436 | break; | |
17437 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17438 | case 128: | |
17439 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17440 | break; | |
17441 | } | |
8bdc1658 | 17442 | break; |
1db455a7 AB |
17443 | default: |
17444 | switch (bits) | |
17445 | { | |
17446 | case 32: | |
17447 | tt = builtin_type (gdbarch)->builtin_float; | |
17448 | break; | |
17449 | case 64: | |
17450 | tt = builtin_type (gdbarch)->builtin_double; | |
17451 | break; | |
17452 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17453 | case 128: | |
17454 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17455 | break; | |
17456 | } | |
8bdc1658 AB |
17457 | break; |
17458 | } | |
17459 | ||
35add35e AB |
17460 | /* If the type we found doesn't match the size we were looking for, then |
17461 | pretend we didn't find a type at all, the complex target type we | |
17462 | create will then be nameless. */ | |
a12e5744 | 17463 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17464 | tt = nullptr; |
17465 | ||
7d93a1e0 | 17466 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 17467 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17468 | } |
17469 | ||
c906108c SS |
17470 | /* Find a representation of a given base type and install |
17471 | it in the TYPE field of the die. */ | |
17472 | ||
f792889a | 17473 | static struct type * |
e7c27a73 | 17474 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17475 | { |
5e22e966 | 17476 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
17477 | struct type *type; |
17478 | struct attribute *attr; | |
19f392bc | 17479 | int encoding = 0, bits = 0; |
15d034d0 | 17480 | const char *name; |
34877895 | 17481 | gdbarch *arch; |
c906108c | 17482 | |
e142c38c | 17483 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17484 | if (attr != nullptr) |
34877895 | 17485 | encoding = DW_UNSND (attr); |
e142c38c | 17486 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17487 | if (attr != nullptr) |
34877895 | 17488 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17489 | name = dwarf2_name (die, cu); |
6ccb9162 | 17490 | if (!name) |
34877895 | 17491 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 17492 | |
08feed99 | 17493 | arch = objfile->arch (); |
103a685e TT |
17494 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
17495 | ||
34877895 PJ |
17496 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17497 | if (attr) | |
103a685e TT |
17498 | { |
17499 | int endianity = DW_UNSND (attr); | |
17500 | ||
17501 | switch (endianity) | |
17502 | { | |
17503 | case DW_END_big: | |
17504 | byte_order = BFD_ENDIAN_BIG; | |
17505 | break; | |
17506 | case DW_END_little: | |
17507 | byte_order = BFD_ENDIAN_LITTLE; | |
17508 | break; | |
17509 | default: | |
17510 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17511 | break; | |
17512 | } | |
17513 | } | |
6ccb9162 UW |
17514 | |
17515 | switch (encoding) | |
c906108c | 17516 | { |
6ccb9162 UW |
17517 | case DW_ATE_address: |
17518 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17519 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17520 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17521 | break; |
17522 | case DW_ATE_boolean: | |
19f392bc | 17523 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17524 | break; |
17525 | case DW_ATE_complex_float: | |
103a685e TT |
17526 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17527 | byte_order); | |
78134374 | 17528 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
17529 | { |
17530 | if (name == nullptr) | |
17531 | { | |
17532 | struct obstack *obstack | |
5e22e966 | 17533 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 17534 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
17535 | nullptr); |
17536 | } | |
17537 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
17538 | } | |
17539 | else | |
17540 | type = init_complex_type (name, type); | |
6ccb9162 UW |
17541 | break; |
17542 | case DW_ATE_decimal_float: | |
19f392bc | 17543 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17544 | break; |
17545 | case DW_ATE_float: | |
103a685e | 17546 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
17547 | break; |
17548 | case DW_ATE_signed: | |
eb77c9df | 17549 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17550 | break; |
17551 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17552 | if (cu->language == language_fortran |
17553 | && name | |
61012eef | 17554 | && startswith (name, "character(")) |
19f392bc UW |
17555 | type = init_character_type (objfile, bits, 1, name); |
17556 | else | |
eb77c9df | 17557 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17558 | break; |
17559 | case DW_ATE_signed_char: | |
6e70227d | 17560 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17561 | || cu->language == language_pascal |
17562 | || cu->language == language_fortran) | |
19f392bc UW |
17563 | type = init_character_type (objfile, bits, 0, name); |
17564 | else | |
eb77c9df | 17565 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17566 | break; |
17567 | case DW_ATE_unsigned_char: | |
868a0084 | 17568 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17569 | || cu->language == language_pascal |
c44af4eb TT |
17570 | || cu->language == language_fortran |
17571 | || cu->language == language_rust) | |
19f392bc UW |
17572 | type = init_character_type (objfile, bits, 1, name); |
17573 | else | |
eb77c9df | 17574 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17575 | break; |
75079b2b | 17576 | case DW_ATE_UTF: |
53e710ac | 17577 | { |
53e710ac PA |
17578 | if (bits == 16) |
17579 | type = builtin_type (arch)->builtin_char16; | |
17580 | else if (bits == 32) | |
17581 | type = builtin_type (arch)->builtin_char32; | |
17582 | else | |
17583 | { | |
b98664d3 | 17584 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17585 | bits); |
eb77c9df | 17586 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17587 | } |
17588 | return set_die_type (die, type, cu); | |
17589 | } | |
75079b2b TT |
17590 | break; |
17591 | ||
6ccb9162 | 17592 | default: |
b98664d3 | 17593 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17594 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17595 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17596 | break; |
c906108c | 17597 | } |
6ccb9162 | 17598 | |
0114d602 | 17599 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17600 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17601 | |
2b4424c3 TT |
17602 | maybe_set_alignment (cu, die, type); |
17603 | ||
103a685e | 17604 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17605 | |
f792889a | 17606 | return set_die_type (die, type, cu); |
c906108c SS |
17607 | } |
17608 | ||
80180f79 SA |
17609 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17610 | resulting value of the attribute into struct bound_prop. | |
17611 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17612 | ||
17613 | static int | |
17614 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17615 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17616 | struct type *default_type) | |
80180f79 SA |
17617 | { |
17618 | struct dwarf2_property_baton *baton; | |
5e22e966 | 17619 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
17620 | struct objfile *objfile = per_objfile->objfile; |
17621 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 17622 | |
9a49df9d AB |
17623 | gdb_assert (default_type != NULL); |
17624 | ||
80180f79 SA |
17625 | if (attr == NULL || prop == NULL) |
17626 | return 0; | |
17627 | ||
4fc6c0d5 | 17628 | if (attr->form_is_block ()) |
80180f79 | 17629 | { |
8d749320 | 17630 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17631 | baton->property_type = default_type; |
80180f79 | 17632 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17633 | baton->locexpr.per_objfile = per_objfile; |
80180f79 SA |
17634 | baton->locexpr.size = DW_BLOCK (attr)->size; |
17635 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17636 | switch (attr->name) |
17637 | { | |
17638 | case DW_AT_string_length: | |
17639 | baton->locexpr.is_reference = true; | |
17640 | break; | |
17641 | default: | |
17642 | baton->locexpr.is_reference = false; | |
17643 | break; | |
17644 | } | |
80180f79 SA |
17645 | prop->data.baton = baton; |
17646 | prop->kind = PROP_LOCEXPR; | |
17647 | gdb_assert (prop->data.baton != NULL); | |
17648 | } | |
cd6c91b4 | 17649 | else if (attr->form_is_ref ()) |
80180f79 SA |
17650 | { |
17651 | struct dwarf2_cu *target_cu = cu; | |
17652 | struct die_info *target_die; | |
17653 | struct attribute *target_attr; | |
17654 | ||
17655 | target_die = follow_die_ref (die, attr, &target_cu); | |
17656 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17657 | if (target_attr == NULL) |
17658 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17659 | target_cu); | |
80180f79 SA |
17660 | if (target_attr == NULL) |
17661 | return 0; | |
17662 | ||
df25ebbd | 17663 | switch (target_attr->name) |
80180f79 | 17664 | { |
df25ebbd | 17665 | case DW_AT_location: |
cd6c91b4 | 17666 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17667 | { |
8d749320 | 17668 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17669 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17670 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17671 | prop->data.baton = baton; | |
17672 | prop->kind = PROP_LOCLIST; | |
17673 | gdb_assert (prop->data.baton != NULL); | |
17674 | } | |
4fc6c0d5 | 17675 | else if (target_attr->form_is_block ()) |
df25ebbd | 17676 | { |
8d749320 | 17677 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17678 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 17679 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17680 | baton->locexpr.per_objfile = per_objfile; |
df25ebbd JB |
17681 | baton->locexpr.size = DW_BLOCK (target_attr)->size; |
17682 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17683 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17684 | prop->data.baton = baton; |
17685 | prop->kind = PROP_LOCEXPR; | |
17686 | gdb_assert (prop->data.baton != NULL); | |
17687 | } | |
17688 | else | |
17689 | { | |
17690 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17691 | "dynamic property"); | |
17692 | return 0; | |
17693 | } | |
17694 | break; | |
17695 | case DW_AT_data_member_location: | |
17696 | { | |
17697 | LONGEST offset; | |
17698 | ||
17699 | if (!handle_data_member_location (target_die, target_cu, | |
17700 | &offset)) | |
17701 | return 0; | |
17702 | ||
8d749320 | 17703 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17704 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17705 | target_cu); |
df25ebbd JB |
17706 | baton->offset_info.offset = offset; |
17707 | baton->offset_info.type = die_type (target_die, target_cu); | |
17708 | prop->data.baton = baton; | |
17709 | prop->kind = PROP_ADDR_OFFSET; | |
17710 | break; | |
17711 | } | |
80180f79 SA |
17712 | } |
17713 | } | |
cd6c91b4 | 17714 | else if (attr->form_is_constant ()) |
80180f79 | 17715 | { |
0826b30a | 17716 | prop->data.const_val = attr->constant_value (0); |
80180f79 SA |
17717 | prop->kind = PROP_CONST; |
17718 | } | |
17719 | else | |
17720 | { | |
17721 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17722 | dwarf2_name (die, cu)); | |
17723 | return 0; | |
17724 | } | |
17725 | ||
17726 | return 1; | |
17727 | } | |
17728 | ||
09ba997f | 17729 | /* See read.h. */ |
9a49df9d | 17730 | |
09ba997f | 17731 | struct type * |
293e7e51 | 17732 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 17733 | { |
9a49df9d AB |
17734 | struct type *int_type; |
17735 | ||
17736 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17737 | #define TRY_TYPE(F) \ |
17738 | int_type = (unsigned_p \ | |
17739 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17740 | : objfile_type (objfile)->builtin_ ## F); \ | |
17741 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17742 | return int_type |
17743 | ||
17744 | TRY_TYPE (char); | |
17745 | TRY_TYPE (short); | |
17746 | TRY_TYPE (int); | |
17747 | TRY_TYPE (long); | |
17748 | TRY_TYPE (long_long); | |
17749 | ||
17750 | #undef TRY_TYPE | |
17751 | ||
17752 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17753 | } | |
17754 | ||
09ba997f | 17755 | /* See read.h. */ |
11a8b164 | 17756 | |
09ba997f | 17757 | struct type * |
293e7e51 | 17758 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 17759 | { |
293e7e51 SM |
17760 | int addr_size = this->per_cu->addr_size (); |
17761 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
17762 | } |
17763 | ||
b86352cf AB |
17764 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17765 | present (which is valid) then compute the default type based on the | |
17766 | compilation units address size. */ | |
17767 | ||
17768 | static struct type * | |
17769 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17770 | { | |
17771 | struct type *index_type = die_type (die, cu); | |
17772 | ||
17773 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17774 | without specifying a base type. | |
17775 | In that case, the base type must be set to the type of | |
17776 | the lower bound, upper bound or count, in that order, if any of these | |
17777 | three attributes references an object that has a type. | |
17778 | If no base type is found, the Dwarf-2 specifications say that | |
17779 | a signed integer type of size equal to the size of an address should | |
17780 | be used. | |
17781 | For the following C code: `extern char gdb_int [];' | |
17782 | GCC produces an empty range DIE. | |
17783 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17784 | high bound or count are not yet handled by this code. */ | |
78134374 | 17785 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 17786 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
17787 | |
17788 | return index_type; | |
17789 | } | |
17790 | ||
a02abb62 JB |
17791 | /* Read the given DW_AT_subrange DIE. */ |
17792 | ||
f792889a | 17793 | static struct type * |
a02abb62 JB |
17794 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17795 | { | |
4c9ad8c2 | 17796 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17797 | struct type *range_type; |
17798 | struct attribute *attr; | |
729efb13 | 17799 | struct dynamic_prop low, high; |
4fae6e18 | 17800 | int low_default_is_valid; |
c451ebe5 | 17801 | int high_bound_is_count = 0; |
15d034d0 | 17802 | const char *name; |
d359392f | 17803 | ULONGEST negative_mask; |
e77813c8 | 17804 | |
b86352cf AB |
17805 | orig_base_type = read_subrange_index_type (die, cu); |
17806 | ||
4c9ad8c2 TT |
17807 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17808 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17809 | creating the range type, but we use the result of check_typedef | |
17810 | when examining properties of the type. */ | |
17811 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17812 | |
7e314c57 JK |
17813 | /* The die_type call above may have already set the type for this DIE. */ |
17814 | range_type = get_die_type (die, cu); | |
17815 | if (range_type) | |
17816 | return range_type; | |
17817 | ||
729efb13 SA |
17818 | low.kind = PROP_CONST; |
17819 | high.kind = PROP_CONST; | |
17820 | high.data.const_val = 0; | |
17821 | ||
4fae6e18 JK |
17822 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17823 | omitting DW_AT_lower_bound. */ | |
17824 | switch (cu->language) | |
6e70227d | 17825 | { |
4fae6e18 JK |
17826 | case language_c: |
17827 | case language_cplus: | |
729efb13 | 17828 | low.data.const_val = 0; |
4fae6e18 JK |
17829 | low_default_is_valid = 1; |
17830 | break; | |
17831 | case language_fortran: | |
729efb13 | 17832 | low.data.const_val = 1; |
4fae6e18 JK |
17833 | low_default_is_valid = 1; |
17834 | break; | |
17835 | case language_d: | |
4fae6e18 | 17836 | case language_objc: |
c44af4eb | 17837 | case language_rust: |
729efb13 | 17838 | low.data.const_val = 0; |
4fae6e18 JK |
17839 | low_default_is_valid = (cu->header.version >= 4); |
17840 | break; | |
17841 | case language_ada: | |
17842 | case language_m2: | |
17843 | case language_pascal: | |
729efb13 | 17844 | low.data.const_val = 1; |
4fae6e18 JK |
17845 | low_default_is_valid = (cu->header.version >= 4); |
17846 | break; | |
17847 | default: | |
729efb13 | 17848 | low.data.const_val = 0; |
4fae6e18 JK |
17849 | low_default_is_valid = 0; |
17850 | break; | |
a02abb62 JB |
17851 | } |
17852 | ||
e142c38c | 17853 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17854 | if (attr != nullptr) |
9a49df9d | 17855 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17856 | else if (!low_default_is_valid) |
b98664d3 | 17857 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17858 | "- DIE at %s [in module %s]"), |
17859 | sect_offset_str (die->sect_off), | |
5e22e966 | 17860 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 17861 | |
506f5c41 TV |
17862 | struct attribute *attr_ub, *attr_count; |
17863 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17864 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17865 | { |
506f5c41 | 17866 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17867 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17868 | { |
c451ebe5 SA |
17869 | /* If bounds are constant do the final calculation here. */ |
17870 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17871 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17872 | else | |
17873 | high_bound_is_count = 1; | |
c2ff108b | 17874 | } |
506f5c41 TV |
17875 | else |
17876 | { | |
17877 | if (attr_ub != NULL) | |
17878 | complaint (_("Unresolved DW_AT_upper_bound " | |
17879 | "- DIE at %s [in module %s]"), | |
17880 | sect_offset_str (die->sect_off), | |
5e22e966 | 17881 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
17882 | if (attr_count != NULL) |
17883 | complaint (_("Unresolved DW_AT_count " | |
17884 | "- DIE at %s [in module %s]"), | |
17885 | sect_offset_str (die->sect_off), | |
5e22e966 | 17886 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 17887 | } |
e77813c8 | 17888 | } |
a02abb62 | 17889 | |
4e962e74 TT |
17890 | LONGEST bias = 0; |
17891 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17892 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 17893 | bias = bias_attr->constant_value (0); |
4e962e74 | 17894 | |
dbb9c2b1 JB |
17895 | /* Normally, the DWARF producers are expected to use a signed |
17896 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17897 | But this is unfortunately not always the case, as witnessed | |
17898 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17899 | is used instead. To work around that ambiguity, we treat | |
17900 | the bounds as signed, and thus sign-extend their values, when | |
17901 | the base type is signed. */ | |
6e70227d | 17902 | negative_mask = |
d359392f | 17903 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17904 | if (low.kind == PROP_CONST |
17905 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17906 | low.data.const_val |= negative_mask; | |
17907 | if (high.kind == PROP_CONST | |
17908 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17909 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17910 | |
5bbd8269 AB |
17911 | /* Check for bit and byte strides. */ |
17912 | struct dynamic_prop byte_stride_prop; | |
17913 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17914 | if (attr_byte_stride != nullptr) | |
17915 | { | |
293e7e51 | 17916 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
17917 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
17918 | prop_type); | |
17919 | } | |
17920 | ||
17921 | struct dynamic_prop bit_stride_prop; | |
17922 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17923 | if (attr_bit_stride != nullptr) | |
17924 | { | |
17925 | /* It only makes sense to have either a bit or byte stride. */ | |
17926 | if (attr_byte_stride != nullptr) | |
17927 | { | |
17928 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17929 | "- DIE at %s [in module %s]"), | |
17930 | sect_offset_str (die->sect_off), | |
5e22e966 | 17931 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
17932 | attr_bit_stride = nullptr; |
17933 | } | |
17934 | else | |
17935 | { | |
293e7e51 | 17936 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
17937 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
17938 | prop_type); | |
17939 | } | |
17940 | } | |
17941 | ||
17942 | if (attr_byte_stride != nullptr | |
17943 | || attr_bit_stride != nullptr) | |
17944 | { | |
17945 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17946 | struct dynamic_prop *stride | |
17947 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17948 | ||
17949 | range_type | |
17950 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17951 | &high, bias, stride, byte_stride_p); | |
17952 | } | |
17953 | else | |
17954 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17955 | |
c451ebe5 SA |
17956 | if (high_bound_is_count) |
17957 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17958 | ||
c2ff108b JK |
17959 | /* Ada expects an empty array on no boundary attributes. */ |
17960 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17961 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17962 | |
39cbfefa DJ |
17963 | name = dwarf2_name (die, cu); |
17964 | if (name) | |
d0e39ea2 | 17965 | range_type->set_name (name); |
6e70227d | 17966 | |
e142c38c | 17967 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17968 | if (attr != nullptr) |
a02abb62 JB |
17969 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17970 | ||
2b4424c3 TT |
17971 | maybe_set_alignment (cu, die, range_type); |
17972 | ||
7e314c57 JK |
17973 | set_die_type (die, range_type, cu); |
17974 | ||
17975 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17976 | set_descriptive_type (range_type, die, cu); |
17977 | ||
7e314c57 | 17978 | return range_type; |
a02abb62 | 17979 | } |
6e70227d | 17980 | |
f792889a | 17981 | static struct type * |
81a17f79 JB |
17982 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17983 | { | |
17984 | struct type *type; | |
81a17f79 | 17985 | |
5e22e966 | 17986 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 17987 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 17988 | |
74a2f8ff | 17989 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17990 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17991 | such a type, we treat it as a stub, and try to resolve it later on, |
17992 | when needed. */ | |
17993 | if (cu->language == language_ada) | |
17994 | TYPE_STUB (type) = 1; | |
17995 | ||
f792889a | 17996 | return set_die_type (die, type, cu); |
81a17f79 | 17997 | } |
a02abb62 | 17998 | |
639d11d3 DC |
17999 | /* Read a single die and all its descendents. Set the die's sibling |
18000 | field to NULL; set other fields in the die correctly, and set all | |
18001 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18002 | location of the info_ptr after reading all of those dies. PARENT | |
18003 | is the parent of the die in question. */ | |
18004 | ||
18005 | static struct die_info * | |
dee91e82 | 18006 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18007 | const gdb_byte *info_ptr, |
18008 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18009 | struct die_info *parent) |
639d11d3 DC |
18010 | { |
18011 | struct die_info *die; | |
d521ce57 | 18012 | const gdb_byte *cur_ptr; |
639d11d3 | 18013 | |
3e225074 | 18014 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
18015 | if (die == NULL) |
18016 | { | |
18017 | *new_info_ptr = cur_ptr; | |
18018 | return NULL; | |
18019 | } | |
93311388 | 18020 | store_in_ref_table (die, reader->cu); |
639d11d3 | 18021 | |
3e225074 | 18022 | if (die->has_children) |
bf6af496 | 18023 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18024 | else |
18025 | { | |
18026 | die->child = NULL; | |
18027 | *new_info_ptr = cur_ptr; | |
18028 | } | |
18029 | ||
18030 | die->sibling = NULL; | |
18031 | die->parent = parent; | |
18032 | return die; | |
18033 | } | |
18034 | ||
18035 | /* Read a die, all of its descendents, and all of its siblings; set | |
18036 | all of the fields of all of the dies correctly. Arguments are as | |
18037 | in read_die_and_children. */ | |
18038 | ||
18039 | static struct die_info * | |
bf6af496 | 18040 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18041 | const gdb_byte *info_ptr, |
18042 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18043 | struct die_info *parent) |
639d11d3 DC |
18044 | { |
18045 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18046 | const gdb_byte *cur_ptr; |
639d11d3 | 18047 | |
c906108c | 18048 | cur_ptr = info_ptr; |
639d11d3 DC |
18049 | first_die = last_sibling = NULL; |
18050 | ||
18051 | while (1) | |
c906108c | 18052 | { |
639d11d3 | 18053 | struct die_info *die |
dee91e82 | 18054 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18055 | |
1d325ec1 | 18056 | if (die == NULL) |
c906108c | 18057 | { |
639d11d3 DC |
18058 | *new_info_ptr = cur_ptr; |
18059 | return first_die; | |
c906108c | 18060 | } |
1d325ec1 DJ |
18061 | |
18062 | if (!first_die) | |
18063 | first_die = die; | |
c906108c | 18064 | else |
1d325ec1 DJ |
18065 | last_sibling->sibling = die; |
18066 | ||
18067 | last_sibling = die; | |
c906108c | 18068 | } |
c906108c SS |
18069 | } |
18070 | ||
bf6af496 DE |
18071 | /* Read a die, all of its descendents, and all of its siblings; set |
18072 | all of the fields of all of the dies correctly. Arguments are as | |
18073 | in read_die_and_children. | |
18074 | This the main entry point for reading a DIE and all its children. */ | |
18075 | ||
18076 | static struct die_info * | |
18077 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18078 | const gdb_byte *info_ptr, |
18079 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18080 | struct die_info *parent) |
18081 | { | |
18082 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18083 | new_info_ptr, parent); | |
18084 | ||
b4f54984 | 18085 | if (dwarf_die_debug) |
bf6af496 DE |
18086 | { |
18087 | fprintf_unfiltered (gdb_stdlog, | |
18088 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18089 | reader->die_section->get_name (), |
bf6af496 DE |
18090 | (unsigned) (info_ptr - reader->die_section->buffer), |
18091 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18092 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18093 | } |
18094 | ||
18095 | return die; | |
18096 | } | |
18097 | ||
3019eac3 DE |
18098 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18099 | attributes. | |
18100 | The caller is responsible for filling in the extra attributes | |
18101 | and updating (*DIEP)->num_attrs. | |
18102 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18103 | except for its child, sibling, and parent fields. */ |
93311388 | 18104 | |
d521ce57 | 18105 | static const gdb_byte * |
3019eac3 | 18106 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18107 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 18108 | int num_extra_attrs) |
93311388 | 18109 | { |
b64f50a1 | 18110 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18111 | struct abbrev_info *abbrev; |
18112 | struct die_info *die; | |
18113 | struct dwarf2_cu *cu = reader->cu; | |
18114 | bfd *abfd = reader->abfd; | |
18115 | ||
9c541725 | 18116 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18117 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18118 | info_ptr += bytes_read; | |
18119 | if (!abbrev_number) | |
18120 | { | |
18121 | *diep = NULL; | |
93311388 DE |
18122 | return info_ptr; |
18123 | } | |
18124 | ||
685af9cd | 18125 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18126 | if (!abbrev) |
348e048f DE |
18127 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18128 | abbrev_number, | |
18129 | bfd_get_filename (abfd)); | |
18130 | ||
3019eac3 | 18131 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18132 | die->sect_off = sect_off; |
93311388 DE |
18133 | die->tag = abbrev->tag; |
18134 | die->abbrev = abbrev_number; | |
3e225074 | 18135 | die->has_children = abbrev->has_children; |
93311388 | 18136 | |
3019eac3 DE |
18137 | /* Make the result usable. |
18138 | The caller needs to update num_attrs after adding the extra | |
18139 | attributes. */ | |
93311388 DE |
18140 | die->num_attrs = abbrev->num_attrs; |
18141 | ||
18a8505e | 18142 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 18143 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
18144 | { |
18145 | bool need_reprocess; | |
18146 | info_ptr = | |
18147 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
18148 | info_ptr, &need_reprocess); | |
18149 | if (need_reprocess) | |
18150 | indexes_that_need_reprocess.push_back (i); | |
18151 | } | |
18152 | ||
052c8bb8 | 18153 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
18154 | if (attr != nullptr) |
18155 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18156 | |
41144253 | 18157 | attr = die->attr (DW_AT_loclists_base); |
18158 | if (attr != nullptr) | |
18159 | cu->loclist_base = DW_UNSND (attr); | |
18160 | ||
a39fdb41 | 18161 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
18162 | if (maybe_addr_base.has_value ()) |
18163 | cu->addr_base = *maybe_addr_base; | |
18164 | for (int index : indexes_that_need_reprocess) | |
18165 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 18166 | *diep = die; |
93311388 DE |
18167 | return info_ptr; |
18168 | } | |
18169 | ||
3019eac3 DE |
18170 | /* Read a die and all its attributes. |
18171 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18172 | except for its child, sibling, and parent fields. */ |
3019eac3 | 18173 | |
d521ce57 | 18174 | static const gdb_byte * |
3019eac3 | 18175 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 18176 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 18177 | { |
d521ce57 | 18178 | const gdb_byte *result; |
bf6af496 | 18179 | |
3e225074 | 18180 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 18181 | |
b4f54984 | 18182 | if (dwarf_die_debug) |
bf6af496 DE |
18183 | { |
18184 | fprintf_unfiltered (gdb_stdlog, | |
18185 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18186 | reader->die_section->get_name (), |
bf6af496 DE |
18187 | (unsigned) (info_ptr - reader->die_section->buffer), |
18188 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18189 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18190 | } |
18191 | ||
18192 | return result; | |
3019eac3 | 18193 | } |
433df2d4 | 18194 | \f |
c906108c | 18195 | |
72bf9492 DJ |
18196 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18197 | symbol for. */ | |
18198 | ||
18199 | static int | |
18200 | is_type_tag_for_partial (int tag) | |
18201 | { | |
18202 | switch (tag) | |
18203 | { | |
18204 | #if 0 | |
18205 | /* Some types that would be reasonable to generate partial symbols for, | |
18206 | that we don't at present. */ | |
18207 | case DW_TAG_array_type: | |
18208 | case DW_TAG_file_type: | |
18209 | case DW_TAG_ptr_to_member_type: | |
18210 | case DW_TAG_set_type: | |
18211 | case DW_TAG_string_type: | |
18212 | case DW_TAG_subroutine_type: | |
18213 | #endif | |
18214 | case DW_TAG_base_type: | |
18215 | case DW_TAG_class_type: | |
680b30c7 | 18216 | case DW_TAG_interface_type: |
72bf9492 DJ |
18217 | case DW_TAG_enumeration_type: |
18218 | case DW_TAG_structure_type: | |
18219 | case DW_TAG_subrange_type: | |
18220 | case DW_TAG_typedef: | |
18221 | case DW_TAG_union_type: | |
18222 | return 1; | |
18223 | default: | |
18224 | return 0; | |
18225 | } | |
18226 | } | |
18227 | ||
18228 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18229 | ||
18230 | static struct partial_die_info * | |
dee91e82 | 18231 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18232 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18233 | { |
dee91e82 | 18234 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18235 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 18236 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18237 | unsigned int bytes_read; |
5afb4e99 | 18238 | unsigned int load_all = 0; |
72bf9492 DJ |
18239 | int nesting_level = 1; |
18240 | ||
18241 | parent_die = NULL; | |
18242 | last_die = NULL; | |
18243 | ||
7adf1e79 DE |
18244 | gdb_assert (cu->per_cu != NULL); |
18245 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18246 | load_all = 1; |
18247 | ||
72bf9492 DJ |
18248 | cu->partial_dies |
18249 | = htab_create_alloc_ex (cu->header.length / 12, | |
18250 | partial_die_hash, | |
18251 | partial_die_eq, | |
18252 | NULL, | |
18253 | &cu->comp_unit_obstack, | |
18254 | hashtab_obstack_allocate, | |
18255 | dummy_obstack_deallocate); | |
18256 | ||
72bf9492 DJ |
18257 | while (1) |
18258 | { | |
685af9cd | 18259 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18260 | |
18261 | /* A NULL abbrev means the end of a series of children. */ | |
18262 | if (abbrev == NULL) | |
18263 | { | |
18264 | if (--nesting_level == 0) | |
cd9983dd YQ |
18265 | return first_die; |
18266 | ||
72bf9492 DJ |
18267 | info_ptr += bytes_read; |
18268 | last_die = parent_die; | |
18269 | parent_die = parent_die->die_parent; | |
18270 | continue; | |
18271 | } | |
18272 | ||
98bfdba5 PA |
18273 | /* Check for template arguments. We never save these; if |
18274 | they're seen, we just mark the parent, and go on our way. */ | |
18275 | if (parent_die != NULL | |
18276 | && cu->language == language_cplus | |
18277 | && (abbrev->tag == DW_TAG_template_type_param | |
18278 | || abbrev->tag == DW_TAG_template_value_param)) | |
18279 | { | |
18280 | parent_die->has_template_arguments = 1; | |
18281 | ||
18282 | if (!load_all) | |
18283 | { | |
18284 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18285 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18286 | continue; |
18287 | } | |
18288 | } | |
18289 | ||
0d99eb77 | 18290 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18291 | Skip their other children. */ |
18292 | if (!load_all | |
18293 | && cu->language == language_cplus | |
18294 | && parent_die != NULL | |
18295 | && parent_die->tag == DW_TAG_subprogram) | |
18296 | { | |
dee91e82 | 18297 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18298 | continue; |
18299 | } | |
18300 | ||
5afb4e99 DJ |
18301 | /* Check whether this DIE is interesting enough to save. Normally |
18302 | we would not be interested in members here, but there may be | |
18303 | later variables referencing them via DW_AT_specification (for | |
18304 | static members). */ | |
18305 | if (!load_all | |
18306 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18307 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18308 | && abbrev->tag != DW_TAG_enumerator |
18309 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18310 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18311 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18312 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18313 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18314 | && abbrev->tag != DW_TAG_module |
95554aad | 18315 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18316 | && abbrev->tag != DW_TAG_imported_unit |
18317 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18318 | { |
18319 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18320 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18321 | continue; |
18322 | } | |
18323 | ||
6f06d47b YQ |
18324 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18325 | abbrev); | |
cd9983dd | 18326 | |
48fbe735 | 18327 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18328 | |
18329 | /* This two-pass algorithm for processing partial symbols has a | |
18330 | high cost in cache pressure. Thus, handle some simple cases | |
18331 | here which cover the majority of C partial symbols. DIEs | |
18332 | which neither have specification tags in them, nor could have | |
18333 | specification tags elsewhere pointing at them, can simply be | |
18334 | processed and discarded. | |
18335 | ||
18336 | This segment is also optional; scan_partial_symbols and | |
18337 | add_partial_symbol will handle these DIEs if we chain | |
18338 | them in normally. When compilers which do not emit large | |
18339 | quantities of duplicate debug information are more common, | |
18340 | this code can probably be removed. */ | |
18341 | ||
18342 | /* Any complete simple types at the top level (pretty much all | |
18343 | of them, for a language without namespaces), can be processed | |
18344 | directly. */ | |
18345 | if (parent_die == NULL | |
cd9983dd YQ |
18346 | && pdi.has_specification == 0 |
18347 | && pdi.is_declaration == 0 | |
18348 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18349 | || pdi.tag == DW_TAG_base_type | |
18350 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18351 | { |
cd9983dd | 18352 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 18353 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18354 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18355 | psymbol_placement::STATIC, |
1762568f | 18356 | 0, cu->language, objfile); |
cd9983dd | 18357 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18358 | continue; |
18359 | } | |
18360 | ||
d8228535 JK |
18361 | /* The exception for DW_TAG_typedef with has_children above is |
18362 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18363 | type_name_or_error will error on such types later. |
d8228535 JK |
18364 | |
18365 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18366 | it could not find the child DIEs referenced later, this is checked | |
18367 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18368 | ||
cd9983dd | 18369 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18370 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18371 | "- DIE at %s [in module %s]"), |
cd9983dd | 18372 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18373 | |
72bf9492 DJ |
18374 | /* If we're at the second level, and we're an enumerator, and |
18375 | our parent has no specification (meaning possibly lives in a | |
18376 | namespace elsewhere), then we can add the partial symbol now | |
18377 | instead of queueing it. */ | |
cd9983dd | 18378 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18379 | && parent_die != NULL |
18380 | && parent_die->die_parent == NULL | |
18381 | && parent_die->tag == DW_TAG_enumeration_type | |
18382 | && parent_die->has_specification == 0) | |
18383 | { | |
cd9983dd | 18384 | if (pdi.name == NULL) |
b98664d3 | 18385 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18386 | else if (building_psymtab) |
31edb802 | 18387 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18388 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18389 | cu->language == language_cplus |
75aedd27 TT |
18390 | ? psymbol_placement::GLOBAL |
18391 | : psymbol_placement::STATIC, | |
1762568f | 18392 | 0, cu->language, objfile); |
72bf9492 | 18393 | |
cd9983dd | 18394 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18395 | continue; |
18396 | } | |
18397 | ||
cd9983dd | 18398 | struct partial_die_info *part_die |
6f06d47b | 18399 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18400 | |
72bf9492 DJ |
18401 | /* We'll save this DIE so link it in. */ |
18402 | part_die->die_parent = parent_die; | |
18403 | part_die->die_sibling = NULL; | |
18404 | part_die->die_child = NULL; | |
18405 | ||
18406 | if (last_die && last_die == parent_die) | |
18407 | last_die->die_child = part_die; | |
18408 | else if (last_die) | |
18409 | last_die->die_sibling = part_die; | |
18410 | ||
18411 | last_die = part_die; | |
18412 | ||
18413 | if (first_die == NULL) | |
18414 | first_die = part_die; | |
18415 | ||
18416 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18417 | find interesting need to be in the hash table, because we | |
18418 | also have the parent/sibling/child chains; only those that we | |
18419 | might refer to by offset later during partial symbol reading. | |
18420 | ||
18421 | For now this means things that might have be the target of a | |
18422 | DW_AT_specification, DW_AT_abstract_origin, or | |
18423 | DW_AT_extension. DW_AT_extension will refer only to | |
18424 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18425 | many things under the function DIE, but we do not recurse | |
18426 | into function DIEs during partial symbol reading) and | |
18427 | possibly variables as well; DW_AT_specification refers to | |
18428 | declarations. Declarations ought to have the DW_AT_declaration | |
18429 | flag. It happens that GCC forgets to put it in sometimes, but | |
18430 | only for functions, not for types. | |
18431 | ||
18432 | Adding more things than necessary to the hash table is harmless | |
18433 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18434 | wasted time in find_partial_die, when we reread the compilation |
18435 | unit with load_all_dies set. */ | |
72bf9492 | 18436 | |
5afb4e99 | 18437 | if (load_all |
72929c62 | 18438 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18439 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18440 | || abbrev->tag == DW_TAG_variable |
18441 | || abbrev->tag == DW_TAG_namespace | |
18442 | || part_die->is_declaration) | |
18443 | { | |
18444 | void **slot; | |
18445 | ||
18446 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18447 | to_underlying (part_die->sect_off), |
18448 | INSERT); | |
72bf9492 DJ |
18449 | *slot = part_die; |
18450 | } | |
18451 | ||
72bf9492 | 18452 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18453 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18454 | languages we have to, so that we can get at method physnames |
18455 | to infer fully qualified class names, for DW_AT_specification, | |
18456 | and for C++ template arguments. For C++, we also look one level | |
18457 | inside functions to find template arguments (if the name of the | |
18458 | function does not already contain the template arguments). | |
bc30ff58 | 18459 | |
0a4b0913 AB |
18460 | For Ada and Fortran, we need to scan the children of subprograms |
18461 | and lexical blocks as well because these languages allow the | |
18462 | definition of nested entities that could be interesting for the | |
18463 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18464 | if (last_die->has_children |
5afb4e99 DJ |
18465 | && (load_all |
18466 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18467 | || last_die->tag == DW_TAG_module |
72bf9492 | 18468 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18469 | || (cu->language == language_cplus |
18470 | && last_die->tag == DW_TAG_subprogram | |
18471 | && (last_die->name == NULL | |
18472 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18473 | || (cu->language != language_c |
18474 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18475 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18476 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18477 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18478 | || ((cu->language == language_ada |
18479 | || cu->language == language_fortran) | |
bc30ff58 JB |
18480 | && (last_die->tag == DW_TAG_subprogram |
18481 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18482 | { |
18483 | nesting_level++; | |
18484 | parent_die = last_die; | |
18485 | continue; | |
18486 | } | |
18487 | ||
18488 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18489 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18490 | |
18491 | /* Back to the top, do it again. */ | |
18492 | } | |
18493 | } | |
18494 | ||
6f06d47b YQ |
18495 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18496 | struct abbrev_info *abbrev) | |
18497 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18498 | { | |
18499 | } | |
18500 | ||
35cc7ed7 YQ |
18501 | /* Read a minimal amount of information into the minimal die structure. |
18502 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18503 | |
48fbe735 YQ |
18504 | const gdb_byte * |
18505 | partial_die_info::read (const struct die_reader_specs *reader, | |
18506 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18507 | { |
dee91e82 | 18508 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18509 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
fa238c03 | 18510 | unsigned int i; |
c5aa993b | 18511 | int has_low_pc_attr = 0; |
c906108c | 18512 | int has_high_pc_attr = 0; |
91da1414 | 18513 | int high_pc_relative = 0; |
c906108c | 18514 | |
fd0a254f | 18515 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18516 | { |
e7da7f8f | 18517 | attribute attr; |
18a8505e | 18518 | bool need_reprocess; |
e7da7f8f | 18519 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], |
18a8505e AT |
18520 | info_ptr, &need_reprocess); |
18521 | /* String and address offsets that need to do the reprocessing have | |
18522 | already been read at this point, so there is no need to wait until | |
18523 | the loop terminates to do the reprocessing. */ | |
18524 | if (need_reprocess) | |
e7da7f8f | 18525 | read_attribute_reprocess (reader, &attr); |
c906108c | 18526 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18527 | partial symbol table. */ |
c906108c SS |
18528 | switch (attr.name) |
18529 | { | |
18530 | case DW_AT_name: | |
48fbe735 | 18531 | switch (tag) |
71c25dea TT |
18532 | { |
18533 | case DW_TAG_compile_unit: | |
95554aad | 18534 | case DW_TAG_partial_unit: |
348e048f | 18535 | case DW_TAG_type_unit: |
71c25dea TT |
18536 | /* Compilation units have a DW_AT_name that is a filename, not |
18537 | a source language identifier. */ | |
18538 | case DW_TAG_enumeration_type: | |
18539 | case DW_TAG_enumerator: | |
18540 | /* These tags always have simple identifiers already; no need | |
18541 | to canonicalize them. */ | |
48fbe735 | 18542 | name = DW_STRING (&attr); |
71c25dea TT |
18543 | break; |
18544 | default: | |
48fbe735 YQ |
18545 | { |
18546 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18547 | ||
18548 | name | |
be1e3d3e | 18549 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, objfile); |
48fbe735 | 18550 | } |
71c25dea TT |
18551 | break; |
18552 | } | |
c906108c | 18553 | break; |
31ef98ae | 18554 | case DW_AT_linkage_name: |
c906108c | 18555 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18556 | /* Note that both forms of linkage name might appear. We |
18557 | assume they will be the same, and we only store the last | |
18558 | one we see. */ | |
e61108c9 | 18559 | linkage_name = attr.value_as_string (); |
787de330 TT |
18560 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
18561 | See https://github.com/rust-lang/rust/issues/32925. */ | |
18562 | if (cu->language == language_rust && linkage_name != NULL | |
18563 | && strchr (linkage_name, '{') != NULL) | |
18564 | linkage_name = NULL; | |
c906108c SS |
18565 | break; |
18566 | case DW_AT_low_pc: | |
18567 | has_low_pc_attr = 1; | |
cd6c91b4 | 18568 | lowpc = attr.value_as_address (); |
c906108c SS |
18569 | break; |
18570 | case DW_AT_high_pc: | |
18571 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
18572 | highpc = attr.value_as_address (); |
18573 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 18574 | high_pc_relative = 1; |
c906108c SS |
18575 | break; |
18576 | case DW_AT_location: | |
0963b4bd | 18577 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 18578 | if (attr.form_is_block ()) |
8e19ed76 | 18579 | { |
48fbe735 | 18580 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18581 | } |
cd6c91b4 | 18582 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 18583 | { |
4d3c2250 | 18584 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18585 | } |
18586 | else | |
18587 | { | |
4d3c2250 KB |
18588 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18589 | "partial symbol information"); | |
8e19ed76 | 18590 | } |
c906108c | 18591 | break; |
c906108c | 18592 | case DW_AT_external: |
48fbe735 | 18593 | is_external = DW_UNSND (&attr); |
c906108c SS |
18594 | break; |
18595 | case DW_AT_declaration: | |
48fbe735 | 18596 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18597 | break; |
18598 | case DW_AT_type: | |
48fbe735 | 18599 | has_type = 1; |
c906108c SS |
18600 | break; |
18601 | case DW_AT_abstract_origin: | |
18602 | case DW_AT_specification: | |
72bf9492 | 18603 | case DW_AT_extension: |
48fbe735 | 18604 | has_specification = 1; |
0826b30a | 18605 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 18606 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 18607 | || cu->per_cu->is_dwz); |
c906108c SS |
18608 | break; |
18609 | case DW_AT_sibling: | |
18610 | /* Ignore absolute siblings, they might point outside of | |
18611 | the current compile unit. */ | |
18612 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18613 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18614 | else |
b9502d3f | 18615 | { |
48fbe735 | 18616 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 18617 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 18618 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
18619 | |
18620 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18621 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 18622 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 18623 | reader->die_section->overflow_complaint (); |
b9502d3f | 18624 | else |
48fbe735 | 18625 | sibling = sibling_ptr; |
b9502d3f | 18626 | } |
c906108c | 18627 | break; |
fa4028e9 | 18628 | case DW_AT_byte_size: |
48fbe735 | 18629 | has_byte_size = 1; |
fa4028e9 | 18630 | break; |
ff908ebf | 18631 | case DW_AT_const_value: |
48fbe735 | 18632 | has_const_value = 1; |
ff908ebf | 18633 | break; |
68511cec CES |
18634 | case DW_AT_calling_convention: |
18635 | /* DWARF doesn't provide a way to identify a program's source-level | |
18636 | entry point. DW_AT_calling_convention attributes are only meant | |
18637 | to describe functions' calling conventions. | |
18638 | ||
18639 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18640 | Fortran, and before DWARF 4 DW_CC_program was the only |
18641 | piece of debugging information whose definition refers to | |
18642 | a 'main program' at all, several compilers marked Fortran | |
18643 | main programs with DW_CC_program --- even when those | |
18644 | functions use the standard calling conventions. | |
18645 | ||
18646 | Although DWARF now specifies a way to provide this | |
18647 | information, we support this practice for backward | |
18648 | compatibility. */ | |
68511cec | 18649 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18650 | && cu->language == language_fortran) |
48fbe735 | 18651 | main_subprogram = 1; |
68511cec | 18652 | break; |
481860b3 GB |
18653 | case DW_AT_inline: |
18654 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18655 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18656 | may_be_inlined = 1; |
481860b3 | 18657 | break; |
95554aad TT |
18658 | |
18659 | case DW_AT_import: | |
48fbe735 | 18660 | if (tag == DW_TAG_imported_unit) |
36586728 | 18661 | { |
0826b30a | 18662 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 18663 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
18664 | || cu->per_cu->is_dwz); |
18665 | } | |
95554aad TT |
18666 | break; |
18667 | ||
0c1b455e | 18668 | case DW_AT_main_subprogram: |
48fbe735 | 18669 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18670 | break; |
18671 | ||
05caa1d2 TT |
18672 | case DW_AT_ranges: |
18673 | { | |
18674 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18675 | but that requires a full DIE, so instead we just | |
18676 | reimplement it. */ | |
18677 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18678 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18679 | + (need_ranges_base | |
18680 | ? cu->ranges_base | |
18681 | : 0)); | |
18682 | ||
18683 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18684 | .debug_ranges section. */ | |
18685 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18686 | nullptr)) | |
18687 | has_pc_info = 1; | |
18688 | } | |
18689 | break; | |
18690 | ||
c906108c SS |
18691 | default: |
18692 | break; | |
18693 | } | |
18694 | } | |
18695 | ||
10d06d82 TT |
18696 | /* For Ada, if both the name and the linkage name appear, we prefer |
18697 | the latter. This lets "catch exception" work better, regardless | |
18698 | of the order in which the name and linkage name were emitted. | |
18699 | Really, though, this is just a workaround for the fact that gdb | |
18700 | doesn't store both the name and the linkage name. */ | |
18701 | if (cu->language == language_ada && linkage_name != nullptr) | |
18702 | name = linkage_name; | |
18703 | ||
91da1414 | 18704 | if (high_pc_relative) |
48fbe735 | 18705 | highpc += lowpc; |
91da1414 | 18706 | |
9373cf26 JK |
18707 | if (has_low_pc_attr && has_high_pc_attr) |
18708 | { | |
18709 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18710 | eliminate duplicate copies of functions and vtables and such. | |
18711 | The linker will arbitrarily choose one and discard the others. | |
18712 | The AT_*_pc values for such functions refer to local labels in | |
18713 | these sections. If the section from that file was discarded, the | |
18714 | labels are not in the output, so the relocs get a value of 0. | |
18715 | If this is a discarded function, mark the pc bounds as invalid, | |
18716 | so that GDB will ignore it. */ | |
5989a64e | 18717 | if (lowpc == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 18718 | { |
48fbe735 | 18719 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 18720 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18721 | |
b98664d3 | 18722 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18723 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18724 | paddress (gdbarch, lowpc), |
18725 | sect_offset_str (sect_off), | |
9d8780f0 | 18726 | objfile_name (objfile)); |
9373cf26 JK |
18727 | } |
18728 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18729 | else if (lowpc >= highpc) |
9373cf26 | 18730 | { |
48fbe735 | 18731 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 18732 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18733 | |
b98664d3 | 18734 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18735 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18736 | paddress (gdbarch, lowpc), |
18737 | paddress (gdbarch, highpc), | |
18738 | sect_offset_str (sect_off), | |
9c541725 | 18739 | objfile_name (objfile)); |
9373cf26 JK |
18740 | } |
18741 | else | |
48fbe735 | 18742 | has_pc_info = 1; |
9373cf26 | 18743 | } |
85cbf3d3 | 18744 | |
c906108c SS |
18745 | return info_ptr; |
18746 | } | |
18747 | ||
72bf9492 DJ |
18748 | /* Find a cached partial DIE at OFFSET in CU. */ |
18749 | ||
d590ff25 YQ |
18750 | struct partial_die_info * |
18751 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18752 | { |
18753 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18754 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18755 | |
9a3c8263 | 18756 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18757 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18758 | to_underlying (sect_off))); |
72bf9492 | 18759 | |
72bf9492 DJ |
18760 | return lookup_die; |
18761 | } | |
18762 | ||
348e048f DE |
18763 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18764 | except in the case of .debug_types DIEs which do not reference | |
18765 | outside their CU (they do however referencing other types via | |
55f1336d | 18766 | DW_FORM_ref_sig8). */ |
72bf9492 | 18767 | |
122cf0f2 | 18768 | static const struct cu_partial_die_info |
9c541725 | 18769 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18770 | { |
5e22e966 | 18771 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 18772 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 | 18773 | struct partial_die_info *pd = NULL; |
72bf9492 | 18774 | |
36586728 | 18775 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 18776 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 18777 | { |
d590ff25 | 18778 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18779 | if (pd != NULL) |
fb816e8b | 18780 | return { cu, pd }; |
0d99eb77 DE |
18781 | /* We missed recording what we needed. |
18782 | Load all dies and try again. */ | |
5afb4e99 | 18783 | } |
0d99eb77 DE |
18784 | else |
18785 | { | |
18786 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18787 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18788 | { |
9d8780f0 SM |
18789 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18790 | " external reference to offset %s [in module %s].\n"), | |
18791 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18792 | bfd_get_filename (objfile->obfd)); |
18793 | } | |
7188ed02 SM |
18794 | dwarf2_per_cu_data *per_cu |
18795 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
18796 | dwarf2_per_objfile); | |
72bf9492 | 18797 | |
7188ed02 SM |
18798 | cu = dwarf2_per_objfile->get_cu (per_cu); |
18799 | if (cu == NULL || cu->partial_dies == NULL) | |
18800 | load_partial_comp_unit (per_cu, dwarf2_per_objfile, nullptr); | |
ae038cb0 | 18801 | |
7188ed02 SM |
18802 | cu = dwarf2_per_objfile->get_cu (per_cu); |
18803 | ||
18804 | cu->last_used = 0; | |
18805 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 18806 | } |
5afb4e99 | 18807 | |
dee91e82 DE |
18808 | /* If we didn't find it, and not all dies have been loaded, |
18809 | load them all and try again. */ | |
18810 | ||
7188ed02 | 18811 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 18812 | { |
7188ed02 | 18813 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
18814 | |
18815 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18816 | THIS_CU->cu may already be in use. So we can't just free it and | |
18817 | replace its DIEs with the ones we read in. Instead, we leave those | |
18818 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18819 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18820 | set. */ | |
7188ed02 | 18821 | load_partial_comp_unit (cu->per_cu, dwarf2_per_objfile, cu); |
5afb4e99 | 18822 | |
7188ed02 | 18823 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18824 | } |
18825 | ||
18826 | if (pd == NULL) | |
18827 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18828 | _("could not find partial DIE %s " |
3e43a32a | 18829 | "in cache [from module %s]\n"), |
9d8780f0 | 18830 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 18831 | return { cu, pd }; |
72bf9492 DJ |
18832 | } |
18833 | ||
abc72ce4 DE |
18834 | /* See if we can figure out if the class lives in a namespace. We do |
18835 | this by looking for a member function; its demangled name will | |
18836 | contain namespace info, if there is any. */ | |
18837 | ||
18838 | static void | |
18839 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18840 | struct dwarf2_cu *cu) | |
18841 | { | |
18842 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18843 | what template types look like, because the demangler | |
18844 | frequently doesn't give the same name as the debug info. We | |
18845 | could fix this by only using the demangled name to get the | |
18846 | prefix (but see comment in read_structure_type). */ | |
18847 | ||
18848 | struct partial_die_info *real_pdi; | |
18849 | struct partial_die_info *child_pdi; | |
18850 | ||
18851 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18852 | we should not do this. We'll prepend the parent's fully qualified | |
18853 | name when we create the partial symbol. */ | |
18854 | ||
18855 | real_pdi = struct_pdi; | |
18856 | while (real_pdi->has_specification) | |
fb816e8b | 18857 | { |
122cf0f2 AB |
18858 | auto res = find_partial_die (real_pdi->spec_offset, |
18859 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18860 | real_pdi = res.pdi; |
18861 | cu = res.cu; | |
18862 | } | |
abc72ce4 DE |
18863 | |
18864 | if (real_pdi->die_parent != NULL) | |
18865 | return; | |
18866 | ||
18867 | for (child_pdi = struct_pdi->die_child; | |
18868 | child_pdi != NULL; | |
18869 | child_pdi = child_pdi->die_sibling) | |
18870 | { | |
18871 | if (child_pdi->tag == DW_TAG_subprogram | |
18872 | && child_pdi->linkage_name != NULL) | |
18873 | { | |
43816ebc TT |
18874 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18875 | (language_class_name_from_physname (cu->language_defn, | |
18876 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18877 | if (actual_class_name != NULL) |
18878 | { | |
5e22e966 | 18879 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 18880 | struct_pdi->name = objfile->intern (actual_class_name.get ()); |
abc72ce4 DE |
18881 | } |
18882 | break; | |
18883 | } | |
18884 | } | |
18885 | } | |
18886 | ||
25c11aca TV |
18887 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
18888 | attribute. */ | |
18889 | ||
18890 | static bool | |
18891 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
18892 | { | |
18893 | switch (tag) | |
18894 | { | |
18895 | case DW_TAG_constant: | |
18896 | case DW_TAG_enumerator: | |
18897 | case DW_TAG_formal_parameter: | |
18898 | case DW_TAG_template_value_param: | |
18899 | case DW_TAG_variable: | |
18900 | return true; | |
18901 | } | |
18902 | ||
18903 | return false; | |
18904 | } | |
18905 | ||
52356b79 YQ |
18906 | void |
18907 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18908 | { |
abc72ce4 DE |
18909 | /* Once we've fixed up a die, there's no point in doing so again. |
18910 | This also avoids a memory leak if we were to call | |
18911 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18912 | if (fixup_called) |
abc72ce4 DE |
18913 | return; |
18914 | ||
72bf9492 DJ |
18915 | /* If we found a reference attribute and the DIE has no name, try |
18916 | to find a name in the referred to DIE. */ | |
18917 | ||
52356b79 | 18918 | if (name == NULL && has_specification) |
72bf9492 DJ |
18919 | { |
18920 | struct partial_die_info *spec_die; | |
72bf9492 | 18921 | |
122cf0f2 | 18922 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18923 | spec_die = res.pdi; |
18924 | cu = res.cu; | |
72bf9492 | 18925 | |
52356b79 | 18926 | spec_die->fixup (cu); |
72bf9492 DJ |
18927 | |
18928 | if (spec_die->name) | |
18929 | { | |
52356b79 | 18930 | name = spec_die->name; |
72bf9492 DJ |
18931 | |
18932 | /* Copy DW_AT_external attribute if it is set. */ | |
18933 | if (spec_die->is_external) | |
52356b79 | 18934 | is_external = spec_die->is_external; |
72bf9492 DJ |
18935 | } |
18936 | } | |
18937 | ||
25c11aca TV |
18938 | if (!has_const_value && has_specification |
18939 | && can_have_DW_AT_const_value_p (tag)) | |
18940 | { | |
18941 | struct partial_die_info *spec_die; | |
18942 | ||
18943 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
18944 | spec_die = res.pdi; | |
18945 | cu = res.cu; | |
18946 | ||
18947 | spec_die->fixup (cu); | |
18948 | ||
18949 | if (spec_die->has_const_value) | |
18950 | { | |
18951 | /* Copy DW_AT_const_value attribute if it is set. */ | |
18952 | has_const_value = spec_die->has_const_value; | |
18953 | } | |
18954 | } | |
18955 | ||
72bf9492 | 18956 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 18957 | |
52356b79 YQ |
18958 | if (name == NULL && tag == DW_TAG_namespace) |
18959 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18960 | |
abc72ce4 DE |
18961 | /* If there is no parent die to provide a namespace, and there are |
18962 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18963 | name. */ |
abc72ce4 | 18964 | if (cu->language == language_cplus |
5e22e966 | 18965 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
18966 | && die_parent == NULL |
18967 | && has_children | |
18968 | && (tag == DW_TAG_class_type | |
18969 | || tag == DW_TAG_structure_type | |
18970 | || tag == DW_TAG_union_type)) | |
18971 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18972 | |
53832f31 TT |
18973 | /* GCC might emit a nameless struct or union that has a linkage |
18974 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18975 | if (name == NULL |
18976 | && (tag == DW_TAG_class_type | |
18977 | || tag == DW_TAG_interface_type | |
18978 | || tag == DW_TAG_structure_type | |
18979 | || tag == DW_TAG_union_type) | |
18980 | && linkage_name != NULL) | |
53832f31 | 18981 | { |
43816ebc TT |
18982 | gdb::unique_xmalloc_ptr<char> demangled |
18983 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18984 | if (demangled != nullptr) | |
53832f31 | 18985 | { |
96408a79 SA |
18986 | const char *base; |
18987 | ||
18988 | /* Strip any leading namespaces/classes, keep only the base name. | |
18989 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18990 | base = strrchr (demangled.get (), ':'); |
18991 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18992 | base++; |
18993 | else | |
43816ebc | 18994 | base = demangled.get (); |
96408a79 | 18995 | |
5e22e966 | 18996 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 18997 | name = objfile->intern (base); |
53832f31 TT |
18998 | } |
18999 | } | |
19000 | ||
52356b79 | 19001 | fixup_called = 1; |
72bf9492 DJ |
19002 | } |
19003 | ||
41144253 | 19004 | /* Read the .debug_loclists header contents from the given SECTION in the |
19005 | HEADER. */ | |
19006 | static void | |
19007 | read_loclist_header (struct loclist_header *header, | |
19008 | struct dwarf2_section_info *section) | |
19009 | { | |
19010 | unsigned int bytes_read; | |
19011 | bfd *abfd = section->get_bfd_owner (); | |
19012 | const gdb_byte *info_ptr = section->buffer; | |
19013 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
19014 | info_ptr += bytes_read; | |
19015 | header->version = read_2_bytes (abfd, info_ptr); | |
19016 | info_ptr += 2; | |
19017 | header->addr_size = read_1_byte (abfd, info_ptr); | |
19018 | info_ptr += 1; | |
19019 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
19020 | info_ptr += 1; | |
19021 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
19022 | } | |
19023 | ||
19024 | /* Return the DW_AT_loclists_base value for the CU. */ | |
19025 | static ULONGEST | |
19026 | lookup_loclist_base (struct dwarf2_cu *cu) | |
19027 | { | |
19028 | /* For the .dwo unit, the loclist_base points to the first offset following | |
19029 | the header. The header consists of the following entities- | |
19030 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
19031 | bit format) | |
19032 | 2. version (2 bytes) | |
19033 | 3. address size (1 byte) | |
19034 | 4. segment selector size (1 byte) | |
19035 | 5. offset entry count (4 bytes) | |
19036 | These sizes are derived as per the DWARFv5 standard. */ | |
19037 | if (cu->dwo_unit != nullptr) | |
19038 | { | |
19039 | if (cu->header.initial_length_size == 4) | |
19040 | return LOCLIST_HEADER_SIZE32; | |
19041 | return LOCLIST_HEADER_SIZE64; | |
19042 | } | |
19043 | return cu->loclist_base; | |
19044 | } | |
19045 | ||
19046 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
19047 | array of offsets in the .debug_loclists section. */ | |
19048 | static CORE_ADDR | |
19049 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
19050 | { | |
5e22e966 | 19051 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
41144253 | 19052 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
19053 | bfd *abfd = objfile->obfd; | |
19054 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
19055 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
19056 | ||
19057 | section->read (objfile); | |
19058 | if (section->buffer == NULL) | |
19059 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
19060 | "section [in module %s]"), objfile_name (objfile)); | |
19061 | struct loclist_header header; | |
19062 | read_loclist_header (&header, section); | |
19063 | if (loclist_index >= header.offset_entry_count) | |
19064 | complaint (_("DW_FORM_loclistx pointing outside of " | |
19065 | ".debug_loclists offset array [in module %s]"), | |
19066 | objfile_name (objfile)); | |
19067 | if (loclist_base + loclist_index * cu->header.offset_size | |
19068 | >= section->size) | |
19069 | complaint (_("DW_FORM_loclistx pointing outside of " | |
19070 | ".debug_loclists section [in module %s]"), | |
19071 | objfile_name (objfile)); | |
19072 | const gdb_byte *info_ptr | |
19073 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
19074 | ||
19075 | if (cu->header.offset_size == 4) | |
19076 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
19077 | else | |
19078 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
19079 | } | |
19080 | ||
18a8505e AT |
19081 | /* Process the attributes that had to be skipped in the first round. These |
19082 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
19083 | They could not have been processed in the first round, because at the time | |
19084 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
19085 | static void |
19086 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
19087 | struct attribute *attr) | |
18a8505e AT |
19088 | { |
19089 | struct dwarf2_cu *cu = reader->cu; | |
19090 | switch (attr->form) | |
19091 | { | |
19092 | case DW_FORM_addrx: | |
19093 | case DW_FORM_GNU_addr_index: | |
19094 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
19095 | break; | |
41144253 | 19096 | case DW_FORM_loclistx: |
19097 | DW_UNSND (attr) = read_loclist_index (cu, DW_UNSND (attr)); | |
19098 | break; | |
18a8505e AT |
19099 | case DW_FORM_strx: |
19100 | case DW_FORM_strx1: | |
19101 | case DW_FORM_strx2: | |
19102 | case DW_FORM_strx3: | |
19103 | case DW_FORM_strx4: | |
19104 | case DW_FORM_GNU_str_index: | |
19105 | { | |
19106 | unsigned int str_index = DW_UNSND (attr); | |
19107 | if (reader->dwo_file != NULL) | |
19108 | { | |
19109 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
19110 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19111 | } | |
19112 | else | |
19113 | { | |
19114 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
19115 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19116 | } | |
19117 | break; | |
19118 | } | |
19119 | default: | |
19120 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
19121 | } | |
19122 | } | |
19123 | ||
a8329558 | 19124 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19125 | |
d521ce57 | 19126 | static const gdb_byte * |
dee91e82 DE |
19127 | read_attribute_value (const struct die_reader_specs *reader, |
19128 | struct attribute *attr, unsigned form, | |
18a8505e AT |
19129 | LONGEST implicit_const, const gdb_byte *info_ptr, |
19130 | bool *need_reprocess) | |
c906108c | 19131 | { |
dee91e82 | 19132 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19133 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 19134 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
dee91e82 | 19135 | bfd *abfd = reader->abfd; |
e7c27a73 | 19136 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19137 | unsigned int bytes_read; |
19138 | struct dwarf_block *blk; | |
18a8505e | 19139 | *need_reprocess = false; |
c906108c | 19140 | |
aead7601 | 19141 | attr->form = (enum dwarf_form) form; |
a8329558 | 19142 | switch (form) |
c906108c | 19143 | { |
c906108c | 19144 | case DW_FORM_ref_addr: |
ae411497 | 19145 | if (cu->header.version == 2) |
c8a7a66f TT |
19146 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
19147 | &bytes_read); | |
ae411497 | 19148 | else |
8266302d TT |
19149 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
19150 | &bytes_read); | |
ae411497 TT |
19151 | info_ptr += bytes_read; |
19152 | break; | |
36586728 | 19153 | case DW_FORM_GNU_ref_alt: |
8266302d | 19154 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
19155 | info_ptr += bytes_read; |
19156 | break; | |
ae411497 | 19157 | case DW_FORM_addr: |
08feed99 TT |
19158 | { |
19159 | struct gdbarch *gdbarch = objfile->arch (); | |
19160 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); | |
19161 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); | |
19162 | info_ptr += bytes_read; | |
19163 | } | |
c906108c SS |
19164 | break; |
19165 | case DW_FORM_block2: | |
7b5a2f43 | 19166 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19167 | blk->size = read_2_bytes (abfd, info_ptr); |
19168 | info_ptr += 2; | |
19169 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19170 | info_ptr += blk->size; | |
19171 | DW_BLOCK (attr) = blk; | |
19172 | break; | |
19173 | case DW_FORM_block4: | |
7b5a2f43 | 19174 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19175 | blk->size = read_4_bytes (abfd, info_ptr); |
19176 | info_ptr += 4; | |
19177 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19178 | info_ptr += blk->size; | |
19179 | DW_BLOCK (attr) = blk; | |
19180 | break; | |
19181 | case DW_FORM_data2: | |
19182 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19183 | info_ptr += 2; | |
19184 | break; | |
19185 | case DW_FORM_data4: | |
19186 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19187 | info_ptr += 4; | |
19188 | break; | |
19189 | case DW_FORM_data8: | |
19190 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19191 | info_ptr += 8; | |
19192 | break; | |
0224619f JK |
19193 | case DW_FORM_data16: |
19194 | blk = dwarf_alloc_block (cu); | |
19195 | blk->size = 16; | |
19196 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19197 | info_ptr += 16; | |
19198 | DW_BLOCK (attr) = blk; | |
19199 | break; | |
2dc7f7b3 | 19200 | case DW_FORM_sec_offset: |
8266302d | 19201 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
19202 | info_ptr += bytes_read; |
19203 | break; | |
41144253 | 19204 | case DW_FORM_loclistx: |
19205 | { | |
19206 | *need_reprocess = true; | |
19207 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19208 | info_ptr += bytes_read; | |
19209 | } | |
19210 | break; | |
c906108c | 19211 | case DW_FORM_string: |
9b1c24c8 | 19212 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19213 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19214 | info_ptr += bytes_read; |
19215 | break; | |
4bdf3d34 | 19216 | case DW_FORM_strp: |
36586728 TT |
19217 | if (!cu->per_cu->is_dwz) |
19218 | { | |
ed2dc618 SM |
19219 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19220 | abfd, info_ptr, cu_header, | |
36586728 TT |
19221 | &bytes_read); |
19222 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19223 | info_ptr += bytes_read; | |
19224 | break; | |
19225 | } | |
19226 | /* FALLTHROUGH */ | |
43988095 JK |
19227 | case DW_FORM_line_strp: |
19228 | if (!cu->per_cu->is_dwz) | |
19229 | { | |
86c0bb4c TT |
19230 | DW_STRING (attr) |
19231 | = dwarf2_per_objfile->read_line_string (info_ptr, cu_header, | |
19232 | &bytes_read); | |
43988095 JK |
19233 | DW_STRING_IS_CANONICAL (attr) = 0; |
19234 | info_ptr += bytes_read; | |
19235 | break; | |
19236 | } | |
19237 | /* FALLTHROUGH */ | |
36586728 TT |
19238 | case DW_FORM_GNU_strp_alt: |
19239 | { | |
c3699833 | 19240 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
8266302d TT |
19241 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
19242 | &bytes_read); | |
36586728 | 19243 | |
0314b390 | 19244 | DW_STRING (attr) = dwz->read_string (objfile, str_offset); |
36586728 TT |
19245 | DW_STRING_IS_CANONICAL (attr) = 0; |
19246 | info_ptr += bytes_read; | |
19247 | } | |
4bdf3d34 | 19248 | break; |
2dc7f7b3 | 19249 | case DW_FORM_exprloc: |
c906108c | 19250 | case DW_FORM_block: |
7b5a2f43 | 19251 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19252 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19253 | info_ptr += bytes_read; | |
19254 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19255 | info_ptr += blk->size; | |
19256 | DW_BLOCK (attr) = blk; | |
19257 | break; | |
19258 | case DW_FORM_block1: | |
7b5a2f43 | 19259 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19260 | blk->size = read_1_byte (abfd, info_ptr); |
19261 | info_ptr += 1; | |
19262 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19263 | info_ptr += blk->size; | |
19264 | DW_BLOCK (attr) = blk; | |
19265 | break; | |
19266 | case DW_FORM_data1: | |
19267 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19268 | info_ptr += 1; | |
19269 | break; | |
19270 | case DW_FORM_flag: | |
19271 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19272 | info_ptr += 1; | |
19273 | break; | |
2dc7f7b3 TT |
19274 | case DW_FORM_flag_present: |
19275 | DW_UNSND (attr) = 1; | |
19276 | break; | |
c906108c SS |
19277 | case DW_FORM_sdata: |
19278 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19279 | info_ptr += bytes_read; | |
19280 | break; | |
19281 | case DW_FORM_udata: | |
18a8505e | 19282 | case DW_FORM_rnglistx: |
c906108c SS |
19283 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19284 | info_ptr += bytes_read; | |
19285 | break; | |
19286 | case DW_FORM_ref1: | |
9c541725 | 19287 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19288 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19289 | info_ptr += 1; |
19290 | break; | |
19291 | case DW_FORM_ref2: | |
9c541725 | 19292 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19293 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19294 | info_ptr += 2; |
19295 | break; | |
19296 | case DW_FORM_ref4: | |
9c541725 | 19297 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19298 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19299 | info_ptr += 4; |
19300 | break; | |
613e1657 | 19301 | case DW_FORM_ref8: |
9c541725 | 19302 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19303 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19304 | info_ptr += 8; |
19305 | break; | |
55f1336d | 19306 | case DW_FORM_ref_sig8: |
ac9ec31b | 19307 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19308 | info_ptr += 8; |
19309 | break; | |
c906108c | 19310 | case DW_FORM_ref_udata: |
9c541725 | 19311 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19312 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19313 | info_ptr += bytes_read; |
19314 | break; | |
c906108c | 19315 | case DW_FORM_indirect: |
a8329558 KW |
19316 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19317 | info_ptr += bytes_read; | |
43988095 JK |
19318 | if (form == DW_FORM_implicit_const) |
19319 | { | |
19320 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19321 | info_ptr += bytes_read; | |
19322 | } | |
19323 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19324 | info_ptr, need_reprocess); |
43988095 JK |
19325 | break; |
19326 | case DW_FORM_implicit_const: | |
19327 | DW_SND (attr) = implicit_const; | |
a8329558 | 19328 | break; |
336d760d | 19329 | case DW_FORM_addrx: |
3019eac3 | 19330 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19331 | *need_reprocess = true; |
19332 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19333 | info_ptr += bytes_read; |
19334 | break; | |
cf532bd1 | 19335 | case DW_FORM_strx: |
15f18d14 AT |
19336 | case DW_FORM_strx1: |
19337 | case DW_FORM_strx2: | |
19338 | case DW_FORM_strx3: | |
19339 | case DW_FORM_strx4: | |
3019eac3 | 19340 | case DW_FORM_GNU_str_index: |
3019eac3 | 19341 | { |
15f18d14 AT |
19342 | ULONGEST str_index; |
19343 | if (form == DW_FORM_strx1) | |
19344 | { | |
19345 | str_index = read_1_byte (abfd, info_ptr); | |
19346 | info_ptr += 1; | |
19347 | } | |
19348 | else if (form == DW_FORM_strx2) | |
19349 | { | |
19350 | str_index = read_2_bytes (abfd, info_ptr); | |
19351 | info_ptr += 2; | |
19352 | } | |
19353 | else if (form == DW_FORM_strx3) | |
19354 | { | |
19355 | str_index = read_3_bytes (abfd, info_ptr); | |
19356 | info_ptr += 3; | |
19357 | } | |
19358 | else if (form == DW_FORM_strx4) | |
19359 | { | |
19360 | str_index = read_4_bytes (abfd, info_ptr); | |
19361 | info_ptr += 4; | |
19362 | } | |
19363 | else | |
19364 | { | |
19365 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19366 | info_ptr += bytes_read; | |
19367 | } | |
18a8505e AT |
19368 | *need_reprocess = true; |
19369 | DW_UNSND (attr) = str_index; | |
19370 | } | |
3019eac3 | 19371 | break; |
c906108c | 19372 | default: |
8a3fe4f8 | 19373 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19374 | dwarf_form_name (form), |
19375 | bfd_get_filename (abfd)); | |
c906108c | 19376 | } |
28e94949 | 19377 | |
36586728 | 19378 | /* Super hack. */ |
cd6c91b4 | 19379 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
19380 | attr->form = DW_FORM_GNU_ref_alt; |
19381 | ||
28e94949 JB |
19382 | /* We have seen instances where the compiler tried to emit a byte |
19383 | size attribute of -1 which ended up being encoded as an unsigned | |
19384 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19385 | an object of this size seems pretty unlikely so we can relatively | |
19386 | safely treat these cases as if the size attribute was invalid and | |
19387 | treat them as zero by default. */ | |
19388 | if (attr->name == DW_AT_byte_size | |
19389 | && form == DW_FORM_data4 | |
19390 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19391 | { |
19392 | complaint | |
b98664d3 | 19393 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19394 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19395 | DW_UNSND (attr) = 0; |
19396 | } | |
28e94949 | 19397 | |
c906108c SS |
19398 | return info_ptr; |
19399 | } | |
19400 | ||
a8329558 KW |
19401 | /* Read an attribute described by an abbreviated attribute. */ |
19402 | ||
d521ce57 | 19403 | static const gdb_byte * |
dee91e82 DE |
19404 | read_attribute (const struct die_reader_specs *reader, |
19405 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19406 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19407 | { |
19408 | attr->name = abbrev->name; | |
43988095 | 19409 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19410 | abbrev->implicit_const, info_ptr, |
19411 | need_reprocess); | |
a8329558 KW |
19412 | } |
19413 | ||
43988095 JK |
19414 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
19415 | ||
19416 | static const char * | |
ed2dc618 | 19417 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4f44ae6c | 19418 | LONGEST str_offset) |
43988095 | 19419 | { |
5989a64e SM |
19420 | return dwarf2_per_objfile->per_bfd->str.read_string |
19421 | (dwarf2_per_objfile->objfile, str_offset, "DW_FORM_strp"); | |
c906108c SS |
19422 | } |
19423 | ||
43988095 JK |
19424 | /* Return pointer to string at .debug_str offset as read from BUF. |
19425 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19426 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19427 | ||
d521ce57 | 19428 | static const char * |
ed2dc618 SM |
19429 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19430 | const gdb_byte *buf, | |
cf2c3c16 TT |
19431 | const struct comp_unit_head *cu_header, |
19432 | unsigned int *bytes_read_ptr) | |
19433 | { | |
8266302d | 19434 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 19435 | |
4f44ae6c | 19436 | return read_indirect_string_at_offset (dwarf2_per_objfile, str_offset); |
cf2c3c16 TT |
19437 | } |
19438 | ||
86c0bb4c | 19439 | /* See read.h. */ |
43988095 | 19440 | |
86c0bb4c TT |
19441 | const char * |
19442 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
19443 | const struct comp_unit_head *cu_header, |
19444 | unsigned int *bytes_read_ptr) | |
43988095 | 19445 | { |
86c0bb4c | 19446 | bfd *abfd = objfile->obfd; |
8266302d | 19447 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 19448 | |
5989a64e | 19449 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
19450 | } |
19451 | ||
3019eac3 | 19452 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 19453 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
19454 | ADDR_SIZE is the size of addresses from the CU header. */ |
19455 | ||
19456 | static CORE_ADDR | |
ed2dc618 | 19457 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
19458 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
19459 | int addr_size) | |
3019eac3 DE |
19460 | { |
19461 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19462 | bfd *abfd = objfile->obfd; | |
19463 | const gdb_byte *info_ptr; | |
18a8505e | 19464 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 19465 | |
5989a64e SM |
19466 | dwarf2_per_objfile->per_bfd->addr.read (objfile); |
19467 | if (dwarf2_per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 19468 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 19469 | objfile_name (objfile)); |
18a8505e | 19470 | if (addr_base_or_zero + addr_index * addr_size |
5989a64e | 19471 | >= dwarf2_per_objfile->per_bfd->addr.size) |
3019eac3 DE |
19472 | error (_("DW_FORM_addr_index pointing outside of " |
19473 | ".debug_addr section [in module %s]"), | |
4262abfb | 19474 | objfile_name (objfile)); |
5989a64e | 19475 | info_ptr = (dwarf2_per_objfile->per_bfd->addr.buffer |
18a8505e | 19476 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
19477 | if (addr_size == 4) |
19478 | return bfd_get_32 (abfd, info_ptr); | |
19479 | else | |
19480 | return bfd_get_64 (abfd, info_ptr); | |
19481 | } | |
19482 | ||
19483 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19484 | ||
19485 | static CORE_ADDR | |
19486 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19487 | { | |
5e22e966 | 19488 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 19489 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
19490 | } |
19491 | ||
19492 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19493 | ||
19494 | static CORE_ADDR | |
d521ce57 | 19495 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19496 | unsigned int *bytes_read) |
19497 | { | |
5e22e966 | 19498 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
19499 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19500 | ||
19501 | return read_addr_index (cu, addr_index); | |
19502 | } | |
19503 | ||
450a1bfc | 19504 | /* See read.h. */ |
3019eac3 DE |
19505 | |
19506 | CORE_ADDR | |
82ca3f51 SM |
19507 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
19508 | dwarf2_per_objfile *dwarf2_per_objfile, | |
19509 | unsigned int addr_index) | |
3019eac3 | 19510 | { |
7188ed02 | 19511 | struct dwarf2_cu *cu = dwarf2_per_objfile->get_cu (per_cu); |
18a8505e | 19512 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
19513 | int addr_size; |
19514 | ||
3019eac3 DE |
19515 | /* We need addr_base and addr_size. |
19516 | If we don't have PER_CU->cu, we have to get it. | |
19517 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19518 | which at this point doesn't seem justified: it's not clear how frequently | |
19519 | it would get used and it would increase the size of every PER_CU. | |
19520 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19521 | so we're not in uncharted territory here. | |
19522 | Alas we need to be a bit more complicated as addr_base is contained | |
19523 | in the DIE. | |
19524 | ||
19525 | We don't need to read the entire CU(/TU). | |
19526 | We just need the header and top level die. | |
a1b64ce1 | 19527 | |
3019eac3 | 19528 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19529 | For now we skip this optimization. */ |
3019eac3 DE |
19530 | |
19531 | if (cu != NULL) | |
19532 | { | |
19533 | addr_base = cu->addr_base; | |
19534 | addr_size = cu->header.addr_size; | |
19535 | } | |
19536 | else | |
19537 | { | |
2e671100 | 19538 | cutu_reader reader (per_cu, dwarf2_per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
19539 | addr_base = reader.cu->addr_base; |
19540 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
19541 | } |
19542 | ||
ed2dc618 SM |
19543 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19544 | addr_size); | |
3019eac3 DE |
19545 | } |
19546 | ||
18a8505e AT |
19547 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
19548 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
19549 | DWO file. */ | |
3019eac3 | 19550 | |
d521ce57 | 19551 | static const char * |
18a8505e AT |
19552 | read_str_index (struct dwarf2_cu *cu, |
19553 | struct dwarf2_section_info *str_section, | |
19554 | struct dwarf2_section_info *str_offsets_section, | |
19555 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 19556 | { |
5e22e966 | 19557 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 19558 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19559 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19560 | bfd *abfd = objfile->obfd; |
d521ce57 | 19561 | const gdb_byte *info_ptr; |
3019eac3 | 19562 | ULONGEST str_offset; |
cf532bd1 | 19563 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 19564 | |
96b79293 TT |
19565 | str_section->read (objfile); |
19566 | str_offsets_section->read (objfile); | |
73869dc2 | 19567 | if (str_section->buffer == NULL) |
18a8505e | 19568 | error (_("%s used without %s section" |
9d8780f0 | 19569 | " in CU at offset %s [in module %s]"), |
96b79293 | 19570 | form_name, str_section->get_name (), |
18a8505e | 19571 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19572 | if (str_offsets_section->buffer == NULL) |
18a8505e | 19573 | error (_("%s used without %s section" |
9d8780f0 | 19574 | " in CU at offset %s [in module %s]"), |
96b79293 | 19575 | form_name, str_section->get_name (), |
18a8505e | 19576 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19577 | info_ptr = (str_offsets_section->buffer |
18a8505e | 19578 | + str_offsets_base |
3019eac3 DE |
19579 | + str_index * cu->header.offset_size); |
19580 | if (cu->header.offset_size == 4) | |
19581 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19582 | else | |
19583 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19584 | if (str_offset >= str_section->size) |
57d63ce2 | 19585 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19586 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19587 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19588 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19589 | } |
19590 | ||
18a8505e AT |
19591 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
19592 | ||
19593 | static const char * | |
19594 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
19595 | { | |
19596 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
19597 | ? reader->cu->header.addr_size : 0; | |
19598 | return read_str_index (reader->cu, | |
19599 | &reader->dwo_file->sections.str, | |
19600 | &reader->dwo_file->sections.str_offsets, | |
19601 | str_offsets_base, str_index); | |
19602 | } | |
19603 | ||
19604 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
19605 | ||
19606 | static const char * | |
19607 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
19608 | { | |
5e22e966 | 19609 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
19610 | const char *objf_name = objfile_name (objfile); |
19611 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
19612 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
19613 | ||
19614 | if (!cu->str_offsets_base.has_value ()) | |
19615 | error (_("%s used in Fission stub without %s" | |
19616 | " in CU at offset 0x%lx [in module %s]"), | |
19617 | form_name, str_offsets_attr_name, | |
19618 | (long) cu->header.offset_size, objf_name); | |
19619 | ||
19620 | return read_str_index (cu, | |
5e22e966 SM |
19621 | &cu->per_objfile->per_bfd->str, |
19622 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
19623 | *cu->str_offsets_base, str_index); |
19624 | } | |
19625 | ||
3019eac3 DE |
19626 | /* Return the length of an LEB128 number in BUF. */ |
19627 | ||
19628 | static int | |
19629 | leb128_size (const gdb_byte *buf) | |
19630 | { | |
19631 | const gdb_byte *begin = buf; | |
19632 | gdb_byte byte; | |
19633 | ||
19634 | while (1) | |
19635 | { | |
19636 | byte = *buf++; | |
19637 | if ((byte & 128) == 0) | |
19638 | return buf - begin; | |
19639 | } | |
19640 | } | |
19641 | ||
c906108c | 19642 | static void |
e142c38c | 19643 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19644 | { |
19645 | switch (lang) | |
19646 | { | |
19647 | case DW_LANG_C89: | |
76bee0cc | 19648 | case DW_LANG_C99: |
0cfd832f | 19649 | case DW_LANG_C11: |
c906108c | 19650 | case DW_LANG_C: |
d1be3247 | 19651 | case DW_LANG_UPC: |
e142c38c | 19652 | cu->language = language_c; |
c906108c | 19653 | break; |
9c37b5ae | 19654 | case DW_LANG_Java: |
c906108c | 19655 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19656 | case DW_LANG_C_plus_plus_11: |
19657 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19658 | cu->language = language_cplus; |
c906108c | 19659 | break; |
6aecb9c2 JB |
19660 | case DW_LANG_D: |
19661 | cu->language = language_d; | |
19662 | break; | |
c906108c SS |
19663 | case DW_LANG_Fortran77: |
19664 | case DW_LANG_Fortran90: | |
b21b22e0 | 19665 | case DW_LANG_Fortran95: |
f7de9aab MW |
19666 | case DW_LANG_Fortran03: |
19667 | case DW_LANG_Fortran08: | |
e142c38c | 19668 | cu->language = language_fortran; |
c906108c | 19669 | break; |
a766d390 DE |
19670 | case DW_LANG_Go: |
19671 | cu->language = language_go; | |
19672 | break; | |
c906108c | 19673 | case DW_LANG_Mips_Assembler: |
e142c38c | 19674 | cu->language = language_asm; |
c906108c SS |
19675 | break; |
19676 | case DW_LANG_Ada83: | |
8aaf0b47 | 19677 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19678 | cu->language = language_ada; |
19679 | break; | |
72019c9c GM |
19680 | case DW_LANG_Modula2: |
19681 | cu->language = language_m2; | |
19682 | break; | |
fe8e67fd PM |
19683 | case DW_LANG_Pascal83: |
19684 | cu->language = language_pascal; | |
19685 | break; | |
22566fbd DJ |
19686 | case DW_LANG_ObjC: |
19687 | cu->language = language_objc; | |
19688 | break; | |
c44af4eb TT |
19689 | case DW_LANG_Rust: |
19690 | case DW_LANG_Rust_old: | |
19691 | cu->language = language_rust; | |
19692 | break; | |
c906108c SS |
19693 | case DW_LANG_Cobol74: |
19694 | case DW_LANG_Cobol85: | |
c906108c | 19695 | default: |
e142c38c | 19696 | cu->language = language_minimal; |
c906108c SS |
19697 | break; |
19698 | } | |
e142c38c | 19699 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19700 | } |
19701 | ||
19702 | /* Return the named attribute or NULL if not there. */ | |
19703 | ||
19704 | static struct attribute * | |
e142c38c | 19705 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19706 | { |
a48e046c | 19707 | for (;;) |
c906108c | 19708 | { |
a48e046c TT |
19709 | unsigned int i; |
19710 | struct attribute *spec = NULL; | |
19711 | ||
19712 | for (i = 0; i < die->num_attrs; ++i) | |
19713 | { | |
19714 | if (die->attrs[i].name == name) | |
19715 | return &die->attrs[i]; | |
19716 | if (die->attrs[i].name == DW_AT_specification | |
19717 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19718 | spec = &die->attrs[i]; | |
19719 | } | |
19720 | ||
19721 | if (!spec) | |
19722 | break; | |
c906108c | 19723 | |
f2f0e013 | 19724 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19725 | } |
c5aa993b | 19726 | |
c906108c SS |
19727 | return NULL; |
19728 | } | |
19729 | ||
7d45c7c3 KB |
19730 | /* Return the string associated with a string-typed attribute, or NULL if it |
19731 | is either not found or is of an incorrect type. */ | |
19732 | ||
19733 | static const char * | |
19734 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19735 | { | |
19736 | struct attribute *attr; | |
19737 | const char *str = NULL; | |
19738 | ||
19739 | attr = dwarf2_attr (die, name, cu); | |
19740 | ||
19741 | if (attr != NULL) | |
19742 | { | |
e61108c9 TT |
19743 | str = attr->value_as_string (); |
19744 | if (str == nullptr) | |
b98664d3 | 19745 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19746 | "DIE at %s in module %s"), |
19747 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 19748 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
19749 | } |
19750 | ||
19751 | return str; | |
19752 | } | |
19753 | ||
a084a2a6 | 19754 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19755 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19756 | static const char * |
19757 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19758 | { | |
19759 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19760 | if (dwo_name == nullptr) | |
19761 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19762 | return dwo_name; | |
19763 | } | |
19764 | ||
05cf31d1 JB |
19765 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19766 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19767 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19768 | |
19769 | static int | |
19770 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19771 | { | |
19772 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19773 | ||
19774 | return (attr && DW_UNSND (attr)); | |
19775 | } | |
19776 | ||
3ca72b44 | 19777 | static int |
e142c38c | 19778 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19779 | { |
05cf31d1 JB |
19780 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19781 | which value is non-zero. However, we have to be careful with | |
19782 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19783 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19784 | end up accidently finding a declaration attribute that belongs | |
19785 | to a different DIE referenced by the specification attribute, | |
19786 | even though the given DIE does not have a declaration attribute. */ | |
19787 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19788 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19789 | } |
19790 | ||
63d06c5c | 19791 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19792 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19793 | containing the return value on output. If there is no |
19794 | specification, but there is an abstract origin, that is | |
19795 | returned. */ | |
63d06c5c DC |
19796 | |
19797 | static struct die_info * | |
f2f0e013 | 19798 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19799 | { |
f2f0e013 DJ |
19800 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19801 | *spec_cu); | |
63d06c5c | 19802 | |
edb3359d DJ |
19803 | if (spec_attr == NULL) |
19804 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19805 | ||
63d06c5c DC |
19806 | if (spec_attr == NULL) |
19807 | return NULL; | |
19808 | else | |
f2f0e013 | 19809 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19810 | } |
c906108c | 19811 | |
527f3840 JK |
19812 | /* Stub for free_line_header to match void * callback types. */ |
19813 | ||
19814 | static void | |
19815 | free_line_header_voidp (void *arg) | |
19816 | { | |
9a3c8263 | 19817 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19818 | |
fff8551c | 19819 | delete lh; |
527f3840 JK |
19820 | } |
19821 | ||
83769d0b | 19822 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19823 | |
19824 | static struct dwarf2_section_info * | |
19825 | get_debug_line_section (struct dwarf2_cu *cu) | |
19826 | { | |
19827 | struct dwarf2_section_info *section; | |
5e22e966 | 19828 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
36586728 TT |
19829 | |
19830 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19831 | DWO file. */ | |
19832 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19833 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19834 | else if (cu->per_cu->is_dwz) | |
19835 | { | |
c3699833 | 19836 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
36586728 TT |
19837 | |
19838 | section = &dwz->line; | |
19839 | } | |
19840 | else | |
5989a64e | 19841 | section = &dwarf2_per_objfile->per_bfd->line; |
36586728 TT |
19842 | |
19843 | return section; | |
19844 | } | |
19845 | ||
debd256d | 19846 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 19847 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 19848 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
19849 | Returns NULL if there is a problem reading the header, e.g., if it |
19850 | has a version we don't understand. | |
debd256d JB |
19851 | |
19852 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
19853 | the returned object point into the dwarf line section buffer, |
19854 | and must not be freed. */ | |
ae2de4f8 | 19855 | |
fff8551c | 19856 | static line_header_up |
9c541725 | 19857 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 19858 | { |
3019eac3 | 19859 | struct dwarf2_section_info *section; |
5e22e966 | 19860 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 19861 | |
36586728 | 19862 | section = get_debug_line_section (cu); |
96b79293 | 19863 | section->read (dwarf2_per_objfile->objfile); |
3019eac3 | 19864 | if (section->buffer == NULL) |
debd256d | 19865 | { |
3019eac3 | 19866 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 19867 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 19868 | else |
b98664d3 | 19869 | complaint (_("missing .debug_line section")); |
debd256d JB |
19870 | return 0; |
19871 | } | |
19872 | ||
0df7ad3a TT |
19873 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
19874 | dwarf2_per_objfile, section, | |
19875 | &cu->header); | |
debd256d | 19876 | } |
c906108c | 19877 | |
c6da4cef | 19878 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 19879 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 19880 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
19881 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
19882 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 19883 | |
d521ce57 | 19884 | static const char * |
7ba99d21 | 19885 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 19886 | const dwarf2_psymtab *pst, |
c89b44cd TT |
19887 | const char *comp_dir, |
19888 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 19889 | { |
d521ce57 TT |
19890 | const char *include_name = fe.name; |
19891 | const char *include_name_to_compare = include_name; | |
72b9f47f | 19892 | const char *pst_filename; |
c6da4cef DE |
19893 | int file_is_pst; |
19894 | ||
8c43009f | 19895 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 19896 | |
c89b44cd | 19897 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
19898 | if (!IS_ABSOLUTE_PATH (include_name) |
19899 | && (dir_name != NULL || comp_dir != NULL)) | |
19900 | { | |
19901 | /* Avoid creating a duplicate psymtab for PST. | |
19902 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
19903 | Before we do the comparison, however, we need to account | |
19904 | for DIR_NAME and COMP_DIR. | |
19905 | First prepend dir_name (if non-NULL). If we still don't | |
19906 | have an absolute path prepend comp_dir (if non-NULL). | |
19907 | However, the directory we record in the include-file's | |
19908 | psymtab does not contain COMP_DIR (to match the | |
19909 | corresponding symtab(s)). | |
19910 | ||
19911 | Example: | |
19912 | ||
19913 | bash$ cd /tmp | |
19914 | bash$ gcc -g ./hello.c | |
19915 | include_name = "hello.c" | |
19916 | dir_name = "." | |
19917 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
19918 | DW_AT_name = "./hello.c" |
19919 | ||
19920 | */ | |
c6da4cef DE |
19921 | |
19922 | if (dir_name != NULL) | |
19923 | { | |
c89b44cd TT |
19924 | name_holder->reset (concat (dir_name, SLASH_STRING, |
19925 | include_name, (char *) NULL)); | |
19926 | include_name = name_holder->get (); | |
c6da4cef | 19927 | include_name_to_compare = include_name; |
c6da4cef DE |
19928 | } |
19929 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
19930 | { | |
c89b44cd TT |
19931 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
19932 | include_name, (char *) NULL)); | |
19933 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
19934 | } |
19935 | } | |
19936 | ||
19937 | pst_filename = pst->filename; | |
c89b44cd | 19938 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
19939 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
19940 | { | |
c89b44cd TT |
19941 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
19942 | pst_filename, (char *) NULL)); | |
19943 | pst_filename = copied_name.get (); | |
c6da4cef DE |
19944 | } |
19945 | ||
1e3fad37 | 19946 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 19947 | |
c6da4cef DE |
19948 | if (file_is_pst) |
19949 | return NULL; | |
19950 | return include_name; | |
19951 | } | |
19952 | ||
d9b3de22 DE |
19953 | /* State machine to track the state of the line number program. */ |
19954 | ||
6f77053d | 19955 | class lnp_state_machine |
d9b3de22 | 19956 | { |
6f77053d PA |
19957 | public: |
19958 | /* Initialize a machine state for the start of a line number | |
19959 | program. */ | |
804d2729 TT |
19960 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
19961 | bool record_lines_p); | |
6f77053d | 19962 | |
8c43009f PA |
19963 | file_entry *current_file () |
19964 | { | |
19965 | /* lh->file_names is 0-based, but the file name numbers in the | |
19966 | statement program are 1-based. */ | |
6f77053d PA |
19967 | return m_line_header->file_name_at (m_file); |
19968 | } | |
19969 | ||
19970 | /* Record the line in the state machine. END_SEQUENCE is true if | |
19971 | we're processing the end of a sequence. */ | |
19972 | void record_line (bool end_sequence); | |
19973 | ||
7ab6656f OJ |
19974 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
19975 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
19976 | void check_line_address (struct dwarf2_cu *cu, |
19977 | const gdb_byte *line_ptr, | |
7ab6656f | 19978 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
19979 | |
19980 | void handle_set_discriminator (unsigned int discriminator) | |
19981 | { | |
19982 | m_discriminator = discriminator; | |
19983 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
19984 | } | |
19985 | ||
19986 | /* Handle DW_LNE_set_address. */ | |
19987 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
19988 | { | |
19989 | m_op_index = 0; | |
19990 | address += baseaddr; | |
19991 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
19992 | } | |
19993 | ||
19994 | /* Handle DW_LNS_advance_pc. */ | |
19995 | void handle_advance_pc (CORE_ADDR adjust); | |
19996 | ||
19997 | /* Handle a special opcode. */ | |
19998 | void handle_special_opcode (unsigned char op_code); | |
19999 | ||
20000 | /* Handle DW_LNS_advance_line. */ | |
20001 | void handle_advance_line (int line_delta) | |
20002 | { | |
20003 | advance_line (line_delta); | |
20004 | } | |
20005 | ||
20006 | /* Handle DW_LNS_set_file. */ | |
20007 | void handle_set_file (file_name_index file); | |
20008 | ||
20009 | /* Handle DW_LNS_negate_stmt. */ | |
20010 | void handle_negate_stmt () | |
20011 | { | |
20012 | m_is_stmt = !m_is_stmt; | |
20013 | } | |
20014 | ||
20015 | /* Handle DW_LNS_const_add_pc. */ | |
20016 | void handle_const_add_pc (); | |
20017 | ||
20018 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20019 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20020 | { | |
20021 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20022 | m_op_index = 0; | |
20023 | } | |
20024 | ||
20025 | /* Handle DW_LNS_copy. */ | |
20026 | void handle_copy () | |
20027 | { | |
20028 | record_line (false); | |
20029 | m_discriminator = 0; | |
20030 | } | |
20031 | ||
20032 | /* Handle DW_LNE_end_sequence. */ | |
20033 | void handle_end_sequence () | |
20034 | { | |
804d2729 | 20035 | m_currently_recording_lines = true; |
6f77053d PA |
20036 | } |
20037 | ||
20038 | private: | |
20039 | /* Advance the line by LINE_DELTA. */ | |
20040 | void advance_line (int line_delta) | |
20041 | { | |
20042 | m_line += line_delta; | |
20043 | ||
20044 | if (line_delta != 0) | |
20045 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20046 | } |
20047 | ||
804d2729 TT |
20048 | struct dwarf2_cu *m_cu; |
20049 | ||
6f77053d PA |
20050 | gdbarch *m_gdbarch; |
20051 | ||
20052 | /* True if we're recording lines. | |
20053 | Otherwise we're building partial symtabs and are just interested in | |
20054 | finding include files mentioned by the line number program. */ | |
20055 | bool m_record_lines_p; | |
20056 | ||
8c43009f | 20057 | /* The line number header. */ |
6f77053d | 20058 | line_header *m_line_header; |
8c43009f | 20059 | |
6f77053d PA |
20060 | /* These are part of the standard DWARF line number state machine, |
20061 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20062 | |
6f77053d | 20063 | unsigned char m_op_index = 0; |
7ba99d21 AT |
20064 | /* The line table index of the current file. */ |
20065 | file_name_index m_file = 1; | |
6f77053d PA |
20066 | unsigned int m_line = 1; |
20067 | ||
20068 | /* These are initialized in the constructor. */ | |
20069 | ||
20070 | CORE_ADDR m_address; | |
20071 | bool m_is_stmt; | |
20072 | unsigned int m_discriminator; | |
d9b3de22 DE |
20073 | |
20074 | /* Additional bits of state we need to track. */ | |
20075 | ||
20076 | /* The last file that we called dwarf2_start_subfile for. | |
20077 | This is only used for TLLs. */ | |
6f77053d | 20078 | unsigned int m_last_file = 0; |
d9b3de22 | 20079 | /* The last file a line number was recorded for. */ |
6f77053d | 20080 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20081 | |
804d2729 TT |
20082 | /* When true, record the lines we decode. */ |
20083 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20084 | |
20085 | /* The last line number that was recorded, used to coalesce | |
20086 | consecutive entries for the same line. This can happen, for | |
20087 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20088 | unsigned int m_last_line = 0; |
20089 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20090 | }; |
d9b3de22 | 20091 | |
6f77053d PA |
20092 | void |
20093 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20094 | { | |
20095 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20096 | / m_line_header->maximum_ops_per_instruction) | |
20097 | * m_line_header->minimum_instruction_length); | |
20098 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20099 | m_op_index = ((m_op_index + adjust) | |
20100 | % m_line_header->maximum_ops_per_instruction); | |
20101 | } | |
d9b3de22 | 20102 | |
6f77053d PA |
20103 | void |
20104 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20105 | { |
6f77053d | 20106 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
20107 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
20108 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
20109 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
20110 | / m_line_header->maximum_ops_per_instruction) |
20111 | * m_line_header->minimum_instruction_length); | |
20112 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 20113 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 20114 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 20115 | |
258bf0ee | 20116 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
20117 | advance_line (line_delta); |
20118 | record_line (false); | |
20119 | m_discriminator = 0; | |
20120 | } | |
d9b3de22 | 20121 | |
6f77053d PA |
20122 | void |
20123 | lnp_state_machine::handle_set_file (file_name_index file) | |
20124 | { | |
20125 | m_file = file; | |
20126 | ||
20127 | const file_entry *fe = current_file (); | |
20128 | if (fe == NULL) | |
20129 | dwarf2_debug_line_missing_file_complaint (); | |
20130 | else if (m_record_lines_p) | |
20131 | { | |
20132 | const char *dir = fe->include_dir (m_line_header); | |
20133 | ||
c24bdb02 | 20134 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20135 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20136 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20137 | } |
20138 | } | |
20139 | ||
20140 | void | |
20141 | lnp_state_machine::handle_const_add_pc () | |
20142 | { | |
20143 | CORE_ADDR adjust | |
20144 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20145 | ||
20146 | CORE_ADDR addr_adj | |
20147 | = (((m_op_index + adjust) | |
20148 | / m_line_header->maximum_ops_per_instruction) | |
20149 | * m_line_header->minimum_instruction_length); | |
20150 | ||
20151 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20152 | m_op_index = ((m_op_index + adjust) | |
20153 | % m_line_header->maximum_ops_per_instruction); | |
20154 | } | |
d9b3de22 | 20155 | |
a05a36a5 DE |
20156 | /* Return non-zero if we should add LINE to the line number table. |
20157 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20158 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20159 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20160 | had a non-zero discriminator. | |
20161 | ||
20162 | We have to be careful in the presence of discriminators. | |
20163 | E.g., for this line: | |
20164 | ||
20165 | for (i = 0; i < 100000; i++); | |
20166 | ||
20167 | clang can emit four line number entries for that one line, | |
20168 | each with a different discriminator. | |
20169 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20170 | ||
20171 | However, we want gdb to coalesce all four entries into one. | |
20172 | Otherwise the user could stepi into the middle of the line and | |
20173 | gdb would get confused about whether the pc really was in the | |
20174 | middle of the line. | |
20175 | ||
20176 | Things are further complicated by the fact that two consecutive | |
20177 | line number entries for the same line is a heuristic used by gcc | |
20178 | to denote the end of the prologue. So we can't just discard duplicate | |
20179 | entries, we have to be selective about it. The heuristic we use is | |
20180 | that we only collapse consecutive entries for the same line if at least | |
20181 | one of those entries has a non-zero discriminator. PR 17276. | |
20182 | ||
20183 | Note: Addresses in the line number state machine can never go backwards | |
20184 | within one sequence, thus this coalescing is ok. */ | |
20185 | ||
20186 | static int | |
804d2729 TT |
20187 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20188 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20189 | int line_has_non_zero_discriminator, |
20190 | struct subfile *last_subfile) | |
20191 | { | |
c24bdb02 | 20192 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20193 | return 1; |
20194 | if (line != last_line) | |
20195 | return 1; | |
20196 | /* Same line for the same file that we've seen already. | |
20197 | As a last check, for pr 17276, only record the line if the line | |
20198 | has never had a non-zero discriminator. */ | |
20199 | if (!line_has_non_zero_discriminator) | |
20200 | return 1; | |
20201 | return 0; | |
20202 | } | |
20203 | ||
804d2729 TT |
20204 | /* Use the CU's builder to record line number LINE beginning at |
20205 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20206 | |
20207 | static void | |
d9b3de22 | 20208 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 20209 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 20210 | struct dwarf2_cu *cu) |
252a6764 DE |
20211 | { |
20212 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20213 | ||
27e0867f DE |
20214 | if (dwarf_line_debug) |
20215 | { | |
20216 | fprintf_unfiltered (gdb_stdlog, | |
20217 | "Recording line %u, file %s, address %s\n", | |
20218 | line, lbasename (subfile->name), | |
20219 | paddress (gdbarch, address)); | |
20220 | } | |
20221 | ||
804d2729 | 20222 | if (cu != nullptr) |
8c95582d | 20223 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
20224 | } |
20225 | ||
20226 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20227 | Mark the end of a set of line number records. | |
d9b3de22 | 20228 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20229 | If SUBFILE is NULL the request is ignored. */ |
20230 | ||
20231 | static void | |
20232 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20233 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20234 | { |
27e0867f DE |
20235 | if (subfile == NULL) |
20236 | return; | |
20237 | ||
20238 | if (dwarf_line_debug) | |
20239 | { | |
20240 | fprintf_unfiltered (gdb_stdlog, | |
20241 | "Finishing current line, file %s, address %s\n", | |
20242 | lbasename (subfile->name), | |
20243 | paddress (gdbarch, address)); | |
20244 | } | |
20245 | ||
8c95582d | 20246 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
20247 | } |
20248 | ||
6f77053d PA |
20249 | void |
20250 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20251 | { |
d9b3de22 DE |
20252 | if (dwarf_line_debug) |
20253 | { | |
20254 | fprintf_unfiltered (gdb_stdlog, | |
20255 | "Processing actual line %u: file %u," | |
94a72be7 | 20256 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 20257 | m_line, m_file, |
6f77053d | 20258 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
20259 | m_is_stmt, m_discriminator, |
20260 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
20261 | } |
20262 | ||
6f77053d | 20263 | file_entry *fe = current_file (); |
8c43009f PA |
20264 | |
20265 | if (fe == NULL) | |
d9b3de22 DE |
20266 | dwarf2_debug_line_missing_file_complaint (); |
20267 | /* For now we ignore lines not starting on an instruction boundary. | |
20268 | But not when processing end_sequence for compatibility with the | |
20269 | previous version of the code. */ | |
6f77053d | 20270 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20271 | { |
8c43009f | 20272 | fe->included_p = 1; |
8c95582d | 20273 | if (m_record_lines_p) |
d9b3de22 | 20274 | { |
c24bdb02 | 20275 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 20276 | || end_sequence) |
d9b3de22 | 20277 | { |
804d2729 TT |
20278 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20279 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20280 | } |
20281 | ||
20282 | if (!end_sequence) | |
20283 | { | |
8c95582d AB |
20284 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
20285 | ||
804d2729 | 20286 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20287 | m_line_has_non_zero_discriminator, |
20288 | m_last_subfile)) | |
d9b3de22 | 20289 | { |
c24bdb02 | 20290 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 20291 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 20292 | builder->get_current_subfile (), |
8c95582d | 20293 | m_line, m_address, is_stmt, |
804d2729 | 20294 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20295 | } |
c24bdb02 | 20296 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20297 | m_last_line = m_line; |
d9b3de22 DE |
20298 | } |
20299 | } | |
20300 | } | |
20301 | } | |
20302 | ||
804d2729 TT |
20303 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20304 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20305 | { |
804d2729 | 20306 | m_cu = cu; |
6f77053d PA |
20307 | m_gdbarch = arch; |
20308 | m_record_lines_p = record_lines_p; | |
20309 | m_line_header = lh; | |
d9b3de22 | 20310 | |
804d2729 | 20311 | m_currently_recording_lines = true; |
d9b3de22 | 20312 | |
d9b3de22 DE |
20313 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20314 | was a line entry for it so that the backend has a chance to adjust it | |
20315 | and also record it in case it needs it. This is currently used by MIPS | |
20316 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20317 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20318 | m_is_stmt = lh->default_is_stmt; | |
20319 | m_discriminator = 0; | |
252a6764 DE |
20320 | } |
20321 | ||
6f77053d PA |
20322 | void |
20323 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20324 | const gdb_byte *line_ptr, | |
7ab6656f | 20325 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20326 | { |
7ab6656f OJ |
20327 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20328 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20329 | values of zero to preserve GDB's previous behaviour which is to handle | |
20330 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20331 | |
7ab6656f | 20332 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20333 | { |
20334 | /* This line table is for a function which has been | |
20335 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20336 | ||
5e22e966 | 20337 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
20338 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20339 | ||
b98664d3 | 20340 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20341 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20342 | m_currently_recording_lines = false; |
20343 | /* Note: m_currently_recording_lines is left as false until we see | |
20344 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20345 | } |
20346 | } | |
20347 | ||
f3f5162e | 20348 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20349 | Process the line number information in LH. |
20350 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20351 | program in order to set included_p for every referenced header. */ | |
debd256d | 20352 | |
c906108c | 20353 | static void |
43f3e411 DE |
20354 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20355 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20356 | { |
d521ce57 TT |
20357 | const gdb_byte *line_ptr, *extended_end; |
20358 | const gdb_byte *line_end; | |
a8c50c1f | 20359 | unsigned int bytes_read, extended_len; |
699ca60a | 20360 | unsigned char op_code, extended_op; |
e142c38c | 20361 | CORE_ADDR baseaddr; |
5e22e966 | 20362 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20363 | bfd *abfd = objfile->obfd; |
08feed99 | 20364 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
20365 | /* True if we're recording line info (as opposed to building partial |
20366 | symtabs and just interested in finding include files mentioned by | |
20367 | the line number program). */ | |
20368 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20369 | |
b3b3bada | 20370 | baseaddr = objfile->text_section_offset (); |
c906108c | 20371 | |
debd256d JB |
20372 | line_ptr = lh->statement_program_start; |
20373 | line_end = lh->statement_program_end; | |
c906108c SS |
20374 | |
20375 | /* Read the statement sequences until there's nothing left. */ | |
20376 | while (line_ptr < line_end) | |
20377 | { | |
6f77053d PA |
20378 | /* The DWARF line number program state machine. Reset the state |
20379 | machine at the start of each sequence. */ | |
804d2729 | 20380 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20381 | bool end_sequence = false; |
d9b3de22 | 20382 | |
8c43009f | 20383 | if (record_lines_p) |
c906108c | 20384 | { |
8c43009f PA |
20385 | /* Start a subfile for the current file of the state |
20386 | machine. */ | |
20387 | const file_entry *fe = state_machine.current_file (); | |
20388 | ||
20389 | if (fe != NULL) | |
804d2729 | 20390 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20391 | } |
20392 | ||
a738430d | 20393 | /* Decode the table. */ |
d9b3de22 | 20394 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20395 | { |
20396 | op_code = read_1_byte (abfd, line_ptr); | |
20397 | line_ptr += 1; | |
9aa1fe7e | 20398 | |
debd256d | 20399 | if (op_code >= lh->opcode_base) |
6e70227d | 20400 | { |
8e07a239 | 20401 | /* Special opcode. */ |
6f77053d | 20402 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20403 | } |
20404 | else switch (op_code) | |
c906108c SS |
20405 | { |
20406 | case DW_LNS_extended_op: | |
3e43a32a MS |
20407 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20408 | &bytes_read); | |
473b7be6 | 20409 | line_ptr += bytes_read; |
a8c50c1f | 20410 | extended_end = line_ptr + extended_len; |
c906108c SS |
20411 | extended_op = read_1_byte (abfd, line_ptr); |
20412 | line_ptr += 1; | |
20413 | switch (extended_op) | |
20414 | { | |
20415 | case DW_LNE_end_sequence: | |
6f77053d PA |
20416 | state_machine.handle_end_sequence (); |
20417 | end_sequence = true; | |
c906108c SS |
20418 | break; |
20419 | case DW_LNE_set_address: | |
d9b3de22 DE |
20420 | { |
20421 | CORE_ADDR address | |
c8a7a66f | 20422 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 20423 | line_ptr += bytes_read; |
6f77053d PA |
20424 | |
20425 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20426 | lowpc - baseaddr, address); |
6f77053d | 20427 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20428 | } |
c906108c SS |
20429 | break; |
20430 | case DW_LNE_define_file: | |
debd256d | 20431 | { |
d521ce57 | 20432 | const char *cur_file; |
ecfb656c PA |
20433 | unsigned int mod_time, length; |
20434 | dir_index dindex; | |
6e70227d | 20435 | |
3e43a32a MS |
20436 | cur_file = read_direct_string (abfd, line_ptr, |
20437 | &bytes_read); | |
debd256d | 20438 | line_ptr += bytes_read; |
ecfb656c | 20439 | dindex = (dir_index) |
debd256d JB |
20440 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20441 | line_ptr += bytes_read; | |
20442 | mod_time = | |
20443 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20444 | line_ptr += bytes_read; | |
20445 | length = | |
20446 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20447 | line_ptr += bytes_read; | |
ecfb656c | 20448 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20449 | } |
c906108c | 20450 | break; |
d0c6ba3d | 20451 | case DW_LNE_set_discriminator: |
6f77053d PA |
20452 | { |
20453 | /* The discriminator is not interesting to the | |
20454 | debugger; just ignore it. We still need to | |
20455 | check its value though: | |
20456 | if there are consecutive entries for the same | |
20457 | (non-prologue) line we want to coalesce them. | |
20458 | PR 17276. */ | |
20459 | unsigned int discr | |
20460 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20461 | line_ptr += bytes_read; | |
20462 | ||
20463 | state_machine.handle_set_discriminator (discr); | |
20464 | } | |
d0c6ba3d | 20465 | break; |
c906108c | 20466 | default: |
b98664d3 | 20467 | complaint (_("mangled .debug_line section")); |
debd256d | 20468 | return; |
c906108c | 20469 | } |
a8c50c1f DJ |
20470 | /* Make sure that we parsed the extended op correctly. If e.g. |
20471 | we expected a different address size than the producer used, | |
20472 | we may have read the wrong number of bytes. */ | |
20473 | if (line_ptr != extended_end) | |
20474 | { | |
b98664d3 | 20475 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20476 | return; |
20477 | } | |
c906108c SS |
20478 | break; |
20479 | case DW_LNS_copy: | |
6f77053d | 20480 | state_machine.handle_copy (); |
c906108c SS |
20481 | break; |
20482 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20483 | { |
20484 | CORE_ADDR adjust | |
20485 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20486 | line_ptr += bytes_read; |
6f77053d PA |
20487 | |
20488 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20489 | } |
c906108c SS |
20490 | break; |
20491 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20492 | { |
20493 | int line_delta | |
20494 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20495 | line_ptr += bytes_read; |
6f77053d PA |
20496 | |
20497 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20498 | } |
c906108c SS |
20499 | break; |
20500 | case DW_LNS_set_file: | |
d9b3de22 | 20501 | { |
6f77053d | 20502 | file_name_index file |
ecfb656c PA |
20503 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20504 | &bytes_read); | |
d9b3de22 | 20505 | line_ptr += bytes_read; |
8c43009f | 20506 | |
6f77053d | 20507 | state_machine.handle_set_file (file); |
d9b3de22 | 20508 | } |
c906108c SS |
20509 | break; |
20510 | case DW_LNS_set_column: | |
0ad93d4f | 20511 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20512 | line_ptr += bytes_read; |
20513 | break; | |
20514 | case DW_LNS_negate_stmt: | |
6f77053d | 20515 | state_machine.handle_negate_stmt (); |
c906108c SS |
20516 | break; |
20517 | case DW_LNS_set_basic_block: | |
c906108c | 20518 | break; |
c2c6d25f JM |
20519 | /* Add to the address register of the state machine the |
20520 | address increment value corresponding to special opcode | |
a738430d MK |
20521 | 255. I.e., this value is scaled by the minimum |
20522 | instruction length since special opcode 255 would have | |
b021a221 | 20523 | scaled the increment. */ |
c906108c | 20524 | case DW_LNS_const_add_pc: |
6f77053d | 20525 | state_machine.handle_const_add_pc (); |
c906108c SS |
20526 | break; |
20527 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20528 | { |
6f77053d | 20529 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20530 | line_ptr += 2; |
6f77053d PA |
20531 | |
20532 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20533 | } |
c906108c | 20534 | break; |
9aa1fe7e | 20535 | default: |
a738430d MK |
20536 | { |
20537 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20538 | int i; |
a738430d | 20539 | |
debd256d | 20540 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20541 | { |
20542 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20543 | line_ptr += bytes_read; | |
20544 | } | |
20545 | } | |
c906108c SS |
20546 | } |
20547 | } | |
d9b3de22 DE |
20548 | |
20549 | if (!end_sequence) | |
20550 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20551 | ||
20552 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20553 | in which case we still finish recording the last line). */ | |
6f77053d | 20554 | state_machine.record_line (true); |
c906108c | 20555 | } |
f3f5162e DE |
20556 | } |
20557 | ||
20558 | /* Decode the Line Number Program (LNP) for the given line_header | |
20559 | structure and CU. The actual information extracted and the type | |
20560 | of structures created from the LNP depends on the value of PST. | |
20561 | ||
20562 | 1. If PST is NULL, then this procedure uses the data from the program | |
20563 | to create all necessary symbol tables, and their linetables. | |
20564 | ||
20565 | 2. If PST is not NULL, this procedure reads the program to determine | |
20566 | the list of files included by the unit represented by PST, and | |
20567 | builds all the associated partial symbol tables. | |
20568 | ||
20569 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20570 | It is used for relative paths in the line table. | |
20571 | NOTE: When processing partial symtabs (pst != NULL), | |
20572 | comp_dir == pst->dirname. | |
20573 | ||
20574 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20575 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20576 | symtab we don't use it in the name of the psymtabs we create. | |
20577 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20578 | A good testcase for this is mb-inline.exp. |
20579 | ||
527f3840 JK |
20580 | LOWPC is the lowest address in CU (or 0 if not known). |
20581 | ||
20582 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20583 | for its PC<->lines mapping information. Otherwise only the filename | |
20584 | table is read in. */ | |
f3f5162e DE |
20585 | |
20586 | static void | |
20587 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 20588 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 20589 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 20590 | { |
5e22e966 | 20591 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20592 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 20593 | |
527f3840 JK |
20594 | if (decode_mapping) |
20595 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20596 | |
20597 | if (decode_for_pst_p) | |
20598 | { | |
aaa75496 JB |
20599 | /* Now that we're done scanning the Line Header Program, we can |
20600 | create the psymtab of each included file. */ | |
7ba99d21 AT |
20601 | for (auto &file_entry : lh->file_names ()) |
20602 | if (file_entry.included_p == 1) | |
aaa75496 | 20603 | { |
c89b44cd | 20604 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 20605 | const char *include_name = |
7ba99d21 AT |
20606 | psymtab_include_file_name (lh, file_entry, pst, |
20607 | comp_dir, &name_holder); | |
c6da4cef | 20608 | if (include_name != NULL) |
aaa75496 JB |
20609 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20610 | } | |
20611 | } | |
cb1df416 DJ |
20612 | else |
20613 | { | |
20614 | /* Make sure a symtab is created for every file, even files | |
20615 | which contain only variables (i.e. no code with associated | |
20616 | line numbers). */ | |
c24bdb02 KS |
20617 | buildsym_compunit *builder = cu->get_builder (); |
20618 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 20619 | |
7ba99d21 | 20620 | for (auto &fe : lh->file_names ()) |
cb1df416 | 20621 | { |
804d2729 | 20622 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 20623 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 20624 | { |
c24bdb02 | 20625 | builder->get_current_subfile ()->symtab |
804d2729 | 20626 | = allocate_symtab (cust, |
c24bdb02 | 20627 | builder->get_current_subfile ()->name); |
43f3e411 | 20628 | } |
c24bdb02 | 20629 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
20630 | } |
20631 | } | |
c906108c SS |
20632 | } |
20633 | ||
20634 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20635 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 20636 | or NULL if not known. |
c906108c SS |
20637 | This routine tries to keep line numbers from identical absolute and |
20638 | relative file names in a common subfile. | |
20639 | ||
20640 | Using the `list' example from the GDB testsuite, which resides in | |
20641 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
20642 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
20643 | ||
c5aa993b | 20644 | DW_AT_name: /srcdir/list0.c |
4d663531 | 20645 | DW_AT_comp_dir: /compdir |
357e46e7 | 20646 | files.files[0].name: list0.h |
c5aa993b | 20647 | files.files[0].dir: /srcdir |
357e46e7 | 20648 | files.files[1].name: list0.c |
c5aa993b | 20649 | files.files[1].dir: /srcdir |
c906108c SS |
20650 | |
20651 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
20652 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
20653 | start_subfile will ensure that this happens provided that we pass the | |
20654 | concatenation of files.files[1].dir and files.files[1].name as the | |
20655 | subfile's name. */ | |
c906108c SS |
20656 | |
20657 | static void | |
804d2729 TT |
20658 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
20659 | const char *dirname) | |
c906108c | 20660 | { |
43816ebc | 20661 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 20662 | |
4d663531 | 20663 | /* In order not to lose the line information directory, |
4f1520fb FR |
20664 | we concatenate it to the filename when it makes sense. |
20665 | Note that the Dwarf3 standard says (speaking of filenames in line | |
20666 | information): ``The directory index is ignored for file names | |
20667 | that represent full path names''. Thus ignoring dirname in the | |
20668 | `else' branch below isn't an issue. */ | |
c906108c | 20669 | |
d5166ae1 | 20670 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 20671 | { |
43816ebc TT |
20672 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
20673 | filename = copy.get (); | |
d521ce57 | 20674 | } |
c906108c | 20675 | |
c24bdb02 | 20676 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
20677 | } |
20678 | ||
804d2729 TT |
20679 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
20680 | buildsym_compunit constructor. */ | |
f4dc4d17 | 20681 | |
c24bdb02 KS |
20682 | struct compunit_symtab * |
20683 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
20684 | CORE_ADDR low_pc) | |
f4dc4d17 | 20685 | { |
c24bdb02 | 20686 | gdb_assert (m_builder == nullptr); |
43f3e411 | 20687 | |
c24bdb02 | 20688 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 20689 | (this->per_objfile->objfile, |
c24bdb02 | 20690 | name, comp_dir, language, low_pc)); |
93b8bea4 | 20691 | |
c24bdb02 | 20692 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 20693 | |
c24bdb02 KS |
20694 | get_builder ()->record_debugformat ("DWARF 2"); |
20695 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 20696 | |
c24bdb02 | 20697 | processing_has_namespace_info = false; |
43f3e411 | 20698 | |
c24bdb02 | 20699 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
20700 | } |
20701 | ||
4c2df51b DJ |
20702 | static void |
20703 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 20704 | struct dwarf2_cu *cu) |
4c2df51b | 20705 | { |
5e22e966 | 20706 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
20707 | struct comp_unit_head *cu_header = &cu->header; |
20708 | ||
4c2df51b DJ |
20709 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
20710 | code here to turn a symbol with DW_AT_external and a | |
20711 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
20712 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
20713 | with some versions of binutils) where shared libraries could have | |
20714 | relocations against symbols in their debug information - the | |
20715 | minimal symbol would have the right address, but the debug info | |
20716 | would not. It's no longer necessary, because we will explicitly | |
20717 | apply relocations when we read in the debug information now. */ | |
20718 | ||
20719 | /* A DW_AT_location attribute with no contents indicates that a | |
20720 | variable has been optimized away. */ | |
4fc6c0d5 | 20721 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 20722 | { |
f1e6e072 | 20723 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
20724 | return; |
20725 | } | |
20726 | ||
20727 | /* Handle one degenerate form of location expression specially, to | |
20728 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
20729 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
20730 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 20731 | |
4fc6c0d5 | 20732 | if (attr->form_is_block () |
3019eac3 DE |
20733 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
20734 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
20735 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
20736 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
20737 | && (DW_BLOCK (attr)->size |
20738 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 20739 | { |
891d2f0b | 20740 | unsigned int dummy; |
4c2df51b | 20741 | |
3019eac3 | 20742 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
20743 | SET_SYMBOL_VALUE_ADDRESS |
20744 | (sym, cu->header.read_address (objfile->obfd, | |
20745 | DW_BLOCK (attr)->data + 1, | |
20746 | &dummy)); | |
3019eac3 | 20747 | else |
38583298 TT |
20748 | SET_SYMBOL_VALUE_ADDRESS |
20749 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
20750 | &dummy)); | |
f1e6e072 | 20751 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 20752 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
20753 | SET_SYMBOL_VALUE_ADDRESS |
20754 | (sym, | |
20755 | SYMBOL_VALUE_ADDRESS (sym) | |
20756 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
20757 | return; |
20758 | } | |
20759 | ||
20760 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
20761 | expression evaluator, and use LOC_COMPUTED only when necessary | |
20762 | (i.e. when the value of a register or memory location is | |
20763 | referenced, or a thread-local block, etc.). Then again, it might | |
20764 | not be worthwhile. I'm assuming that it isn't unless performance | |
20765 | or memory numbers show me otherwise. */ | |
20766 | ||
f1e6e072 | 20767 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 20768 | |
f1e6e072 | 20769 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 20770 | cu->has_loclist = true; |
4c2df51b DJ |
20771 | } |
20772 | ||
c906108c SS |
20773 | /* Given a pointer to a DWARF information entry, figure out if we need |
20774 | to make a symbol table entry for it, and if so, create a new entry | |
20775 | and return a pointer to it. | |
20776 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
20777 | used the passed type. |
20778 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
20779 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
20780 | |
20781 | static struct symbol * | |
5e2db402 TT |
20782 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
20783 | struct symbol *space) | |
c906108c | 20784 | { |
5e22e966 | 20785 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 20786 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 20787 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 20788 | struct symbol *sym = NULL; |
15d034d0 | 20789 | const char *name; |
c906108c SS |
20790 | struct attribute *attr = NULL; |
20791 | struct attribute *attr2 = NULL; | |
e142c38c | 20792 | CORE_ADDR baseaddr; |
e37fd15a SW |
20793 | struct pending **list_to_add = NULL; |
20794 | ||
edb3359d | 20795 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 20796 | |
b3b3bada | 20797 | baseaddr = objfile->text_section_offset (); |
c906108c | 20798 | |
94af9270 | 20799 | name = dwarf2_name (die, cu); |
c906108c SS |
20800 | if (name) |
20801 | { | |
34eaf542 | 20802 | int suppress_add = 0; |
94af9270 | 20803 | |
34eaf542 TT |
20804 | if (space) |
20805 | sym = space; | |
20806 | else | |
8c14c3a3 | 20807 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 20808 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
20809 | |
20810 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 20811 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
20812 | /* Fortran does not have mangling standard and the mangling does differ |
20813 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
20814 | const char *physname |
20815 | = (cu->language == language_fortran | |
20816 | ? dwarf2_full_name (name, die, cu) | |
20817 | : dwarf2_physname (name, die, cu)); | |
20818 | const char *linkagename = dw2_linkage_name (die, cu); | |
20819 | ||
20820 | if (linkagename == nullptr || cu->language == language_ada) | |
20821 | sym->set_linkage_name (physname); | |
20822 | else | |
20823 | { | |
20824 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
20825 | sym->set_linkage_name (linkagename); | |
20826 | } | |
f55ee35c | 20827 | |
c906108c | 20828 | /* Default assumptions. |
c5aa993b | 20829 | Use the passed type or decode it from the die. */ |
176620f1 | 20830 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 20831 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
20832 | if (type != NULL) |
20833 | SYMBOL_TYPE (sym) = type; | |
20834 | else | |
e7c27a73 | 20835 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
20836 | attr = dwarf2_attr (die, |
20837 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
20838 | cu); | |
435d3d88 | 20839 | if (attr != nullptr) |
c906108c SS |
20840 | { |
20841 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
20842 | } | |
cb1df416 | 20843 | |
edb3359d DJ |
20844 | attr = dwarf2_attr (die, |
20845 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
20846 | cu); | |
435d3d88 | 20847 | if (attr != nullptr) |
cb1df416 | 20848 | { |
ecfb656c | 20849 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 20850 | struct file_entry *fe; |
9a619af0 | 20851 | |
ecfb656c PA |
20852 | if (cu->line_header != NULL) |
20853 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
20854 | else |
20855 | fe = NULL; | |
20856 | ||
20857 | if (fe == NULL) | |
b98664d3 | 20858 | complaint (_("file index out of range")); |
8c43009f PA |
20859 | else |
20860 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
20861 | } |
20862 | ||
c906108c SS |
20863 | switch (die->tag) |
20864 | { | |
20865 | case DW_TAG_label: | |
e142c38c | 20866 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 20867 | if (attr != nullptr) |
3e29f34a MR |
20868 | { |
20869 | CORE_ADDR addr; | |
20870 | ||
cd6c91b4 | 20871 | addr = attr->value_as_address (); |
3e29f34a | 20872 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 20873 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 20874 | } |
0f5238ed TT |
20875 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
20876 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 20877 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 20878 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
20879 | break; |
20880 | case DW_TAG_subprogram: | |
20881 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20882 | finish_block. */ | |
f1e6e072 | 20883 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 20884 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 20885 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
20886 | || cu->language == language_ada |
20887 | || cu->language == language_fortran) | |
c906108c | 20888 | { |
2cfa0c8d | 20889 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
20890 | Ada and Fortran subprograms, whether marked external or |
20891 | not, are always stored as a global symbol, because we want | |
20892 | to be able to access them globally. For instance, we want | |
20893 | to be able to break on a nested subprogram without having | |
20894 | to specify the context. */ | |
c24bdb02 | 20895 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
20896 | } |
20897 | else | |
20898 | { | |
e37fd15a | 20899 | list_to_add = cu->list_in_scope; |
c906108c SS |
20900 | } |
20901 | break; | |
edb3359d DJ |
20902 | case DW_TAG_inlined_subroutine: |
20903 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20904 | finish_block. */ | |
f1e6e072 | 20905 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 20906 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 20907 | list_to_add = cu->list_in_scope; |
edb3359d | 20908 | break; |
34eaf542 TT |
20909 | case DW_TAG_template_value_param: |
20910 | suppress_add = 1; | |
20911 | /* Fall through. */ | |
72929c62 | 20912 | case DW_TAG_constant: |
c906108c | 20913 | case DW_TAG_variable: |
254e6b9e | 20914 | case DW_TAG_member: |
0963b4bd MS |
20915 | /* Compilation with minimal debug info may result in |
20916 | variables with missing type entries. Change the | |
20917 | misleading `void' type to something sensible. */ | |
78134374 | 20918 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 20919 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 20920 | |
e142c38c | 20921 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
20922 | /* In the case of DW_TAG_member, we should only be called for |
20923 | static const members. */ | |
20924 | if (die->tag == DW_TAG_member) | |
20925 | { | |
3863f96c DE |
20926 | /* dwarf2_add_field uses die_is_declaration, |
20927 | so we do the same. */ | |
254e6b9e DE |
20928 | gdb_assert (die_is_declaration (die, cu)); |
20929 | gdb_assert (attr); | |
20930 | } | |
435d3d88 | 20931 | if (attr != nullptr) |
c906108c | 20932 | { |
e7c27a73 | 20933 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 20934 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 20935 | if (!suppress_add) |
34eaf542 TT |
20936 | { |
20937 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 20938 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 20939 | else |
e37fd15a | 20940 | list_to_add = cu->list_in_scope; |
34eaf542 | 20941 | } |
c906108c SS |
20942 | break; |
20943 | } | |
e142c38c | 20944 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 20945 | if (attr != nullptr) |
c906108c | 20946 | { |
e7c27a73 | 20947 | var_decode_location (attr, sym, cu); |
e142c38c | 20948 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
20949 | |
20950 | /* Fortran explicitly imports any global symbols to the local | |
20951 | scope by DW_TAG_common_block. */ | |
20952 | if (cu->language == language_fortran && die->parent | |
20953 | && die->parent->tag == DW_TAG_common_block) | |
20954 | attr2 = NULL; | |
20955 | ||
caac4577 JG |
20956 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20957 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
5989a64e | 20958 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
20959 | { |
20960 | /* When a static variable is eliminated by the linker, | |
20961 | the corresponding debug information is not stripped | |
20962 | out, but the variable address is set to null; | |
20963 | do not add such variables into symbol table. */ | |
20964 | } | |
20965 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 20966 | { |
4b610737 TT |
20967 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20968 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
5989a64e | 20969 | && dwarf2_per_objfile->per_bfd->can_copy) |
4b610737 TT |
20970 | { |
20971 | /* A global static variable might be subject to | |
20972 | copy relocation. We first check for a local | |
20973 | minsym, though, because maybe the symbol was | |
20974 | marked hidden, in which case this would not | |
20975 | apply. */ | |
20976 | bound_minimal_symbol found | |
20977 | = (lookup_minimal_symbol_linkage | |
987012b8 | 20978 | (sym->linkage_name (), objfile)); |
4b610737 TT |
20979 | if (found.minsym != nullptr) |
20980 | sym->maybe_copied = 1; | |
20981 | } | |
f55ee35c | 20982 | |
1c809c68 TT |
20983 | /* A variable with DW_AT_external is never static, |
20984 | but it may be block-scoped. */ | |
804d2729 | 20985 | list_to_add |
c24bdb02 KS |
20986 | = ((cu->list_in_scope |
20987 | == cu->get_builder ()->get_file_symbols ()) | |
20988 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20989 | : cu->list_in_scope); |
1c809c68 | 20990 | } |
c906108c | 20991 | else |
e37fd15a | 20992 | list_to_add = cu->list_in_scope; |
c906108c SS |
20993 | } |
20994 | else | |
20995 | { | |
20996 | /* We do not know the address of this symbol. | |
c5aa993b JM |
20997 | If it is an external symbol and we have type information |
20998 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
20999 | The address of the variable will then be determined from | |
21000 | the minimal symbol table whenever the variable is | |
21001 | referenced. */ | |
e142c38c | 21002 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21003 | |
21004 | /* Fortran explicitly imports any global symbols to the local | |
21005 | scope by DW_TAG_common_block. */ | |
21006 | if (cu->language == language_fortran && die->parent | |
21007 | && die->parent->tag == DW_TAG_common_block) | |
21008 | { | |
21009 | /* SYMBOL_CLASS doesn't matter here because | |
21010 | read_common_block is going to reset it. */ | |
21011 | if (!suppress_add) | |
21012 | list_to_add = cu->list_in_scope; | |
21013 | } | |
21014 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21015 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21016 | { |
0fe7935b DJ |
21017 | /* A variable with DW_AT_external is never static, but it |
21018 | may be block-scoped. */ | |
804d2729 | 21019 | list_to_add |
c24bdb02 KS |
21020 | = ((cu->list_in_scope |
21021 | == cu->get_builder ()->get_file_symbols ()) | |
21022 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21023 | : cu->list_in_scope); |
0fe7935b | 21024 | |
f1e6e072 | 21025 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21026 | } |
442ddf59 JK |
21027 | else if (!die_is_declaration (die, cu)) |
21028 | { | |
21029 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21030 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21031 | if (!suppress_add) |
21032 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21033 | } |
c906108c SS |
21034 | } |
21035 | break; | |
21036 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21037 | { |
21038 | /* If we are inside a function, mark this as an argument. If | |
21039 | not, we might be looking at an argument to an inlined function | |
21040 | when we do not have enough information to show inlined frames; | |
21041 | pretend it's a local variable in that case so that the user can | |
21042 | still see it. */ | |
804d2729 | 21043 | struct context_stack *curr |
c24bdb02 | 21044 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
21045 | if (curr != nullptr && curr->name != nullptr) |
21046 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21047 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 21048 | if (attr != nullptr) |
a60f3166 TT |
21049 | { |
21050 | var_decode_location (attr, sym, cu); | |
21051 | } | |
21052 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 21053 | if (attr != nullptr) |
a60f3166 TT |
21054 | { |
21055 | dwarf2_const_value (attr, sym, cu); | |
21056 | } | |
f346a30d | 21057 | |
a60f3166 TT |
21058 | list_to_add = cu->list_in_scope; |
21059 | } | |
c906108c SS |
21060 | break; |
21061 | case DW_TAG_unspecified_parameters: | |
21062 | /* From varargs functions; gdb doesn't seem to have any | |
21063 | interest in this information, so just ignore it for now. | |
21064 | (FIXME?) */ | |
21065 | break; | |
34eaf542 TT |
21066 | case DW_TAG_template_type_param: |
21067 | suppress_add = 1; | |
21068 | /* Fall through. */ | |
c906108c | 21069 | case DW_TAG_class_type: |
680b30c7 | 21070 | case DW_TAG_interface_type: |
c906108c SS |
21071 | case DW_TAG_structure_type: |
21072 | case DW_TAG_union_type: | |
72019c9c | 21073 | case DW_TAG_set_type: |
c906108c | 21074 | case DW_TAG_enumeration_type: |
f1e6e072 | 21075 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21076 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21077 | |
63d06c5c | 21078 | { |
9c37b5ae | 21079 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21080 | really ever be static objects: otherwise, if you try |
21081 | to, say, break of a class's method and you're in a file | |
21082 | which doesn't mention that class, it won't work unless | |
21083 | the check for all static symbols in lookup_symbol_aux | |
21084 | saves you. See the OtherFileClass tests in | |
21085 | gdb.c++/namespace.exp. */ | |
21086 | ||
e37fd15a | 21087 | if (!suppress_add) |
34eaf542 | 21088 | { |
c24bdb02 | 21089 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 21090 | list_to_add |
c24bdb02 | 21091 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 21092 | && cu->language == language_cplus |
c24bdb02 | 21093 | ? builder->get_global_symbols () |
804d2729 | 21094 | : cu->list_in_scope); |
63d06c5c | 21095 | |
64382290 | 21096 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21097 | ... }" also defines a typedef for "foo". */ |
64382290 | 21098 | if (cu->language == language_cplus |
45280282 | 21099 | || cu->language == language_ada |
c44af4eb TT |
21100 | || cu->language == language_d |
21101 | || cu->language == language_rust) | |
64382290 TT |
21102 | { |
21103 | /* The symbol's name is already allocated along | |
21104 | with this objfile, so we don't need to | |
21105 | duplicate it for the type. */ | |
7d93a1e0 | 21106 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 21107 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 21108 | } |
63d06c5c DC |
21109 | } |
21110 | } | |
c906108c SS |
21111 | break; |
21112 | case DW_TAG_typedef: | |
f1e6e072 | 21113 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21114 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21115 | list_to_add = cu->list_in_scope; |
63d06c5c | 21116 | break; |
c906108c | 21117 | case DW_TAG_base_type: |
a02abb62 | 21118 | case DW_TAG_subrange_type: |
f1e6e072 | 21119 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21120 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21121 | list_to_add = cu->list_in_scope; |
c906108c SS |
21122 | break; |
21123 | case DW_TAG_enumerator: | |
e142c38c | 21124 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 21125 | if (attr != nullptr) |
c906108c | 21126 | { |
e7c27a73 | 21127 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21128 | } |
63d06c5c DC |
21129 | { |
21130 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21131 | DW_TAG_class_type, etc. block. */ | |
21132 | ||
804d2729 | 21133 | list_to_add |
c24bdb02 | 21134 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21135 | && cu->language == language_cplus |
c24bdb02 | 21136 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21137 | : cu->list_in_scope); |
63d06c5c | 21138 | } |
c906108c | 21139 | break; |
74921315 | 21140 | case DW_TAG_imported_declaration: |
5c4e30ca | 21141 | case DW_TAG_namespace: |
f1e6e072 | 21142 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21143 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21144 | break; |
530e8392 KB |
21145 | case DW_TAG_module: |
21146 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21147 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21148 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21149 | break; |
4357ac6c | 21150 | case DW_TAG_common_block: |
f1e6e072 | 21151 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21152 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21153 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21154 | break; |
c906108c SS |
21155 | default: |
21156 | /* Not a tag we recognize. Hopefully we aren't processing | |
21157 | trash data, but since we must specifically ignore things | |
21158 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21159 | this point. */ |
b98664d3 | 21160 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21161 | dwarf_tag_name (die->tag)); |
c906108c SS |
21162 | break; |
21163 | } | |
df8a16a1 | 21164 | |
e37fd15a SW |
21165 | if (suppress_add) |
21166 | { | |
21167 | sym->hash_next = objfile->template_symbols; | |
21168 | objfile->template_symbols = sym; | |
21169 | list_to_add = NULL; | |
21170 | } | |
21171 | ||
21172 | if (list_to_add != NULL) | |
d3cb6808 | 21173 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21174 | |
df8a16a1 DJ |
21175 | /* For the benefit of old versions of GCC, check for anonymous |
21176 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21177 | if (!cu->processing_has_namespace_info |
94af9270 | 21178 | && cu->language == language_cplus) |
c24bdb02 | 21179 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21180 | } |
21181 | return (sym); | |
21182 | } | |
21183 | ||
98bfdba5 PA |
21184 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21185 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21186 | standard (v4) is not entirely clear about the meaning of using | |
21187 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21188 | wider than the data. The conclusion of a discussion on the DWARF | |
21189 | list was that this is unspecified. We choose to always zero-extend | |
21190 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21191 | |
98bfdba5 | 21192 | static gdb_byte * |
ff39bb5e | 21193 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21194 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21195 | { |
5e22e966 | 21196 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
21197 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21198 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21199 | LONGEST l = DW_UNSND (attr); |
21200 | ||
21201 | if (bits < sizeof (*value) * 8) | |
21202 | { | |
21203 | l &= ((LONGEST) 1 << bits) - 1; | |
21204 | *value = l; | |
21205 | } | |
21206 | else if (bits == sizeof (*value) * 8) | |
21207 | *value = l; | |
21208 | else | |
21209 | { | |
224c3ddb | 21210 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21211 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21212 | return bytes; | |
21213 | } | |
21214 | ||
21215 | return NULL; | |
21216 | } | |
21217 | ||
21218 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21219 | the value does not fit in *VALUE, set *BYTES - either already | |
21220 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21221 | or, set *BATON, if we translated the constant to a location | |
21222 | expression. */ | |
21223 | ||
21224 | static void | |
ff39bb5e | 21225 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21226 | const char *name, struct obstack *obstack, |
21227 | struct dwarf2_cu *cu, | |
d521ce57 | 21228 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21229 | struct dwarf2_locexpr_baton **baton) |
21230 | { | |
5e22e966 | 21231 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 21232 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 21233 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21234 | struct dwarf_block *blk; |
98bfdba5 PA |
21235 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21236 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21237 | ||
21238 | *value = 0; | |
21239 | *bytes = NULL; | |
21240 | *baton = NULL; | |
c906108c SS |
21241 | |
21242 | switch (attr->form) | |
21243 | { | |
21244 | case DW_FORM_addr: | |
336d760d | 21245 | case DW_FORM_addrx: |
3019eac3 | 21246 | case DW_FORM_GNU_addr_index: |
ac56253d | 21247 | { |
ac56253d TT |
21248 | gdb_byte *data; |
21249 | ||
98bfdba5 PA |
21250 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21251 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21252 | cu_header->addr_size, |
98bfdba5 | 21253 | TYPE_LENGTH (type)); |
ac56253d TT |
21254 | /* Symbols of this form are reasonably rare, so we just |
21255 | piggyback on the existing location code rather than writing | |
21256 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21257 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 21258 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
21259 | (*baton)->per_cu = cu->per_cu; |
21260 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21261 | |
98bfdba5 | 21262 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21263 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21264 | (*baton)->data = data; |
ac56253d TT |
21265 | |
21266 | data[0] = DW_OP_addr; | |
21267 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21268 | byte_order, DW_ADDR (attr)); | |
21269 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21270 | } |
c906108c | 21271 | break; |
4ac36638 | 21272 | case DW_FORM_string: |
93b5768b | 21273 | case DW_FORM_strp: |
cf532bd1 | 21274 | case DW_FORM_strx: |
3019eac3 | 21275 | case DW_FORM_GNU_str_index: |
36586728 | 21276 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21277 | /* DW_STRING is already allocated on the objfile obstack, point |
21278 | directly to it. */ | |
d521ce57 | 21279 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21280 | break; |
c906108c SS |
21281 | case DW_FORM_block1: |
21282 | case DW_FORM_block2: | |
21283 | case DW_FORM_block4: | |
21284 | case DW_FORM_block: | |
2dc7f7b3 | 21285 | case DW_FORM_exprloc: |
0224619f | 21286 | case DW_FORM_data16: |
c906108c | 21287 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21288 | if (TYPE_LENGTH (type) != blk->size) |
21289 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21290 | TYPE_LENGTH (type)); | |
21291 | *bytes = blk->data; | |
c906108c | 21292 | break; |
2df3850c JM |
21293 | |
21294 | /* The DW_AT_const_value attributes are supposed to carry the | |
21295 | symbol's value "represented as it would be on the target | |
21296 | architecture." By the time we get here, it's already been | |
21297 | converted to host endianness, so we just need to sign- or | |
21298 | zero-extend it as appropriate. */ | |
21299 | case DW_FORM_data1: | |
3aef2284 | 21300 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21301 | break; |
c906108c | 21302 | case DW_FORM_data2: |
3aef2284 | 21303 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21304 | break; |
c906108c | 21305 | case DW_FORM_data4: |
3aef2284 | 21306 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21307 | break; |
c906108c | 21308 | case DW_FORM_data8: |
3aef2284 | 21309 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21310 | break; |
21311 | ||
c906108c | 21312 | case DW_FORM_sdata: |
663c44ac | 21313 | case DW_FORM_implicit_const: |
98bfdba5 | 21314 | *value = DW_SND (attr); |
2df3850c JM |
21315 | break; |
21316 | ||
c906108c | 21317 | case DW_FORM_udata: |
98bfdba5 | 21318 | *value = DW_UNSND (attr); |
c906108c | 21319 | break; |
2df3850c | 21320 | |
c906108c | 21321 | default: |
b98664d3 | 21322 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21323 | dwarf_form_name (attr->form)); |
98bfdba5 | 21324 | *value = 0; |
c906108c SS |
21325 | break; |
21326 | } | |
21327 | } | |
21328 | ||
2df3850c | 21329 | |
98bfdba5 PA |
21330 | /* Copy constant value from an attribute to a symbol. */ |
21331 | ||
2df3850c | 21332 | static void |
ff39bb5e | 21333 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21334 | struct dwarf2_cu *cu) |
2df3850c | 21335 | { |
5e22e966 | 21336 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 21337 | LONGEST value; |
d521ce57 | 21338 | const gdb_byte *bytes; |
98bfdba5 | 21339 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21340 | |
98bfdba5 | 21341 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21342 | sym->print_name (), |
98bfdba5 PA |
21343 | &objfile->objfile_obstack, cu, |
21344 | &value, &bytes, &baton); | |
2df3850c | 21345 | |
98bfdba5 PA |
21346 | if (baton != NULL) |
21347 | { | |
98bfdba5 | 21348 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21349 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21350 | } |
21351 | else if (bytes != NULL) | |
21352 | { | |
21353 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21354 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21355 | } |
21356 | else | |
21357 | { | |
21358 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21359 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21360 | } |
2df3850c JM |
21361 | } |
21362 | ||
c906108c SS |
21363 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21364 | ||
21365 | static struct type * | |
e7c27a73 | 21366 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21367 | { |
c906108c | 21368 | struct attribute *type_attr; |
c906108c | 21369 | |
e142c38c | 21370 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21371 | if (!type_attr) |
21372 | { | |
5e22e966 | 21373 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21374 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21375 | return objfile_type (objfile)->builtin_void; |
c906108c | 21376 | } |
348e048f | 21377 | |
673bfd45 | 21378 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21379 | } |
21380 | ||
b4ba55a1 JB |
21381 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21382 | that allows to find parallel types through that information instead | |
21383 | of having to do expensive parallel lookups by type name. */ | |
21384 | ||
21385 | static int | |
21386 | need_gnat_info (struct dwarf2_cu *cu) | |
21387 | { | |
de4cb04a JB |
21388 | /* Assume that the Ada compiler was GNAT, which always produces |
21389 | the auxiliary information. */ | |
21390 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21391 | } |
21392 | ||
b4ba55a1 JB |
21393 | /* Return the auxiliary type of the die in question using its |
21394 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21395 | attribute is not present. */ | |
21396 | ||
21397 | static struct type * | |
21398 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21399 | { | |
b4ba55a1 | 21400 | struct attribute *type_attr; |
b4ba55a1 JB |
21401 | |
21402 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21403 | if (!type_attr) | |
21404 | return NULL; | |
21405 | ||
673bfd45 | 21406 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21407 | } |
21408 | ||
21409 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21410 | descriptive type accordingly. */ | |
21411 | ||
21412 | static void | |
21413 | set_descriptive_type (struct type *type, struct die_info *die, | |
21414 | struct dwarf2_cu *cu) | |
21415 | { | |
21416 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21417 | ||
21418 | if (descriptive_type) | |
21419 | { | |
21420 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21421 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21422 | } | |
21423 | } | |
21424 | ||
c906108c SS |
21425 | /* Return the containing type of the die in question using its |
21426 | DW_AT_containing_type attribute. */ | |
21427 | ||
21428 | static struct type * | |
e7c27a73 | 21429 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21430 | { |
c906108c | 21431 | struct attribute *type_attr; |
5e22e966 | 21432 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21433 | |
e142c38c | 21434 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21435 | if (!type_attr) |
21436 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21437 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21438 | |
673bfd45 | 21439 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21440 | } |
21441 | ||
ac9ec31b DE |
21442 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21443 | ||
21444 | static struct type * | |
21445 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21446 | { | |
5e22e966 | 21447 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ac9ec31b | 21448 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 21449 | char *saved; |
ac9ec31b | 21450 | |
528e1572 SM |
21451 | std::string message |
21452 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21453 | objfile_name (objfile), | |
21454 | sect_offset_str (cu->header.sect_off), | |
21455 | sect_offset_str (die->sect_off)); | |
efba19b0 | 21456 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 21457 | |
19f392bc | 21458 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21459 | } |
21460 | ||
673bfd45 | 21461 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21462 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21463 | DW_AT_containing_type. | |
673bfd45 DE |
21464 | If there is no type substitute an error marker. */ |
21465 | ||
c906108c | 21466 | static struct type * |
ff39bb5e | 21467 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21468 | struct dwarf2_cu *cu) |
c906108c | 21469 | { |
5e22e966 | 21470 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 21471 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21472 | struct type *this_type; |
21473 | ||
ac9ec31b DE |
21474 | gdb_assert (attr->name == DW_AT_type |
21475 | || attr->name == DW_AT_GNAT_descriptive_type | |
21476 | || attr->name == DW_AT_containing_type); | |
21477 | ||
673bfd45 DE |
21478 | /* First see if we have it cached. */ |
21479 | ||
36586728 TT |
21480 | if (attr->form == DW_FORM_GNU_ref_alt) |
21481 | { | |
21482 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 21483 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 21484 | |
ed2dc618 SM |
21485 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21486 | dwarf2_per_objfile); | |
aa66c379 | 21487 | this_type = get_die_type_at_offset (sect_off, per_cu, dwarf2_per_objfile); |
36586728 | 21488 | } |
cd6c91b4 | 21489 | else if (attr->form_is_ref ()) |
673bfd45 | 21490 | { |
0826b30a | 21491 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 21492 | |
aa66c379 SM |
21493 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, |
21494 | dwarf2_per_objfile); | |
673bfd45 | 21495 | } |
55f1336d | 21496 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21497 | { |
ac9ec31b | 21498 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21499 | |
ac9ec31b | 21500 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21501 | } |
21502 | else | |
21503 | { | |
b98664d3 | 21504 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
21505 | " at %s [in module %s]"), |
21506 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21507 | objfile_name (objfile)); |
ac9ec31b | 21508 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21509 | } |
21510 | ||
21511 | /* If not cached we need to read it in. */ | |
21512 | ||
21513 | if (this_type == NULL) | |
21514 | { | |
ac9ec31b | 21515 | struct die_info *type_die = NULL; |
673bfd45 DE |
21516 | struct dwarf2_cu *type_cu = cu; |
21517 | ||
cd6c91b4 | 21518 | if (attr->form_is_ref ()) |
ac9ec31b DE |
21519 | type_die = follow_die_ref (die, attr, &type_cu); |
21520 | if (type_die == NULL) | |
21521 | return build_error_marker_type (cu, die); | |
21522 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21523 | from an inter-CU reference and the type's CU got expanded before |
21524 | ours. */ | |
ac9ec31b | 21525 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21526 | } |
21527 | ||
21528 | /* If we still don't have a type use an error marker. */ | |
21529 | ||
21530 | if (this_type == NULL) | |
ac9ec31b | 21531 | return build_error_marker_type (cu, die); |
673bfd45 | 21532 | |
f792889a | 21533 | return this_type; |
c906108c SS |
21534 | } |
21535 | ||
673bfd45 DE |
21536 | /* Return the type in DIE, CU. |
21537 | Returns NULL for invalid types. | |
21538 | ||
02142a6c | 21539 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21540 | and only reads the die in if necessary. |
21541 | ||
21542 | NOTE: This can be called when reading in partial or full symbols. */ | |
21543 | ||
f792889a | 21544 | static struct type * |
e7c27a73 | 21545 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21546 | { |
f792889a DJ |
21547 | struct type *this_type; |
21548 | ||
21549 | this_type = get_die_type (die, cu); | |
21550 | if (this_type) | |
21551 | return this_type; | |
21552 | ||
673bfd45 DE |
21553 | return read_type_die_1 (die, cu); |
21554 | } | |
21555 | ||
21556 | /* Read the type in DIE, CU. | |
21557 | Returns NULL for invalid types. */ | |
21558 | ||
21559 | static struct type * | |
21560 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21561 | { | |
21562 | struct type *this_type = NULL; | |
21563 | ||
c906108c SS |
21564 | switch (die->tag) |
21565 | { | |
21566 | case DW_TAG_class_type: | |
680b30c7 | 21567 | case DW_TAG_interface_type: |
c906108c SS |
21568 | case DW_TAG_structure_type: |
21569 | case DW_TAG_union_type: | |
f792889a | 21570 | this_type = read_structure_type (die, cu); |
c906108c SS |
21571 | break; |
21572 | case DW_TAG_enumeration_type: | |
f792889a | 21573 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21574 | break; |
21575 | case DW_TAG_subprogram: | |
21576 | case DW_TAG_subroutine_type: | |
edb3359d | 21577 | case DW_TAG_inlined_subroutine: |
f792889a | 21578 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21579 | break; |
21580 | case DW_TAG_array_type: | |
f792889a | 21581 | this_type = read_array_type (die, cu); |
c906108c | 21582 | break; |
72019c9c | 21583 | case DW_TAG_set_type: |
f792889a | 21584 | this_type = read_set_type (die, cu); |
72019c9c | 21585 | break; |
c906108c | 21586 | case DW_TAG_pointer_type: |
f792889a | 21587 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21588 | break; |
21589 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21590 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21591 | break; |
21592 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21593 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21594 | break; | |
21595 | case DW_TAG_rvalue_reference_type: | |
21596 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21597 | break; |
21598 | case DW_TAG_const_type: | |
f792889a | 21599 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21600 | break; |
21601 | case DW_TAG_volatile_type: | |
f792889a | 21602 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21603 | break; |
06d66ee9 TT |
21604 | case DW_TAG_restrict_type: |
21605 | this_type = read_tag_restrict_type (die, cu); | |
21606 | break; | |
c906108c | 21607 | case DW_TAG_string_type: |
f792889a | 21608 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21609 | break; |
21610 | case DW_TAG_typedef: | |
f792889a | 21611 | this_type = read_typedef (die, cu); |
c906108c | 21612 | break; |
a02abb62 | 21613 | case DW_TAG_subrange_type: |
f792889a | 21614 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21615 | break; |
c906108c | 21616 | case DW_TAG_base_type: |
f792889a | 21617 | this_type = read_base_type (die, cu); |
c906108c | 21618 | break; |
81a17f79 | 21619 | case DW_TAG_unspecified_type: |
f792889a | 21620 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21621 | break; |
0114d602 DJ |
21622 | case DW_TAG_namespace: |
21623 | this_type = read_namespace_type (die, cu); | |
21624 | break; | |
f55ee35c JK |
21625 | case DW_TAG_module: |
21626 | this_type = read_module_type (die, cu); | |
21627 | break; | |
a2c2acaf MW |
21628 | case DW_TAG_atomic_type: |
21629 | this_type = read_tag_atomic_type (die, cu); | |
21630 | break; | |
c906108c | 21631 | default: |
b98664d3 | 21632 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 21633 | dwarf_tag_name (die->tag)); |
c906108c SS |
21634 | break; |
21635 | } | |
63d06c5c | 21636 | |
f792889a | 21637 | return this_type; |
63d06c5c DC |
21638 | } |
21639 | ||
abc72ce4 DE |
21640 | /* See if we can figure out if the class lives in a namespace. We do |
21641 | this by looking for a member function; its demangled name will | |
21642 | contain namespace info, if there is any. | |
21643 | Return the computed name or NULL. | |
21644 | Space for the result is allocated on the objfile's obstack. | |
21645 | This is the full-die version of guess_partial_die_structure_name. | |
21646 | In this case we know DIE has no useful parent. */ | |
21647 | ||
43816ebc | 21648 | static const char * |
abc72ce4 DE |
21649 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
21650 | { | |
21651 | struct die_info *spec_die; | |
21652 | struct dwarf2_cu *spec_cu; | |
21653 | struct die_info *child; | |
5e22e966 | 21654 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
21655 | |
21656 | spec_cu = cu; | |
21657 | spec_die = die_specification (die, &spec_cu); | |
21658 | if (spec_die != NULL) | |
21659 | { | |
21660 | die = spec_die; | |
21661 | cu = spec_cu; | |
21662 | } | |
21663 | ||
21664 | for (child = die->child; | |
21665 | child != NULL; | |
21666 | child = child->sibling) | |
21667 | { | |
21668 | if (child->tag == DW_TAG_subprogram) | |
21669 | { | |
73b9be8b | 21670 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 21671 | |
7d45c7c3 | 21672 | if (linkage_name != NULL) |
abc72ce4 | 21673 | { |
43816ebc TT |
21674 | gdb::unique_xmalloc_ptr<char> actual_name |
21675 | (language_class_name_from_physname (cu->language_defn, | |
21676 | linkage_name)); | |
21677 | const char *name = NULL; | |
abc72ce4 DE |
21678 | |
21679 | if (actual_name != NULL) | |
21680 | { | |
15d034d0 | 21681 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
21682 | |
21683 | if (die_name != NULL | |
43816ebc | 21684 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
21685 | { |
21686 | /* Strip off the class name from the full name. | |
21687 | We want the prefix. */ | |
21688 | int die_name_len = strlen (die_name); | |
43816ebc TT |
21689 | int actual_name_len = strlen (actual_name.get ()); |
21690 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
21691 | |
21692 | /* Test for '::' as a sanity check. */ | |
21693 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 21694 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 21695 | name = obstack_strndup ( |
e3b94546 | 21696 | &objfile->per_bfd->storage_obstack, |
43816ebc | 21697 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
21698 | } |
21699 | } | |
abc72ce4 DE |
21700 | return name; |
21701 | } | |
21702 | } | |
21703 | } | |
21704 | ||
21705 | return NULL; | |
21706 | } | |
21707 | ||
96408a79 SA |
21708 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
21709 | prefix part in such case. See | |
21710 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21711 | ||
a121b7c1 | 21712 | static const char * |
96408a79 SA |
21713 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
21714 | { | |
21715 | struct attribute *attr; | |
e6a959d6 | 21716 | const char *base; |
96408a79 SA |
21717 | |
21718 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
21719 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
21720 | return NULL; | |
21721 | ||
7d45c7c3 | 21722 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
21723 | return NULL; |
21724 | ||
73b9be8b | 21725 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
21726 | if (attr == NULL || DW_STRING (attr) == NULL) |
21727 | return NULL; | |
21728 | ||
21729 | /* dwarf2_name had to be already called. */ | |
21730 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
21731 | ||
21732 | /* Strip the base name, keep any leading namespaces/classes. */ | |
21733 | base = strrchr (DW_STRING (attr), ':'); | |
21734 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
21735 | return ""; | |
21736 | ||
5e22e966 | 21737 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 TT |
21738 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
21739 | DW_STRING (attr), | |
21740 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
21741 | } |
21742 | ||
fdde2d81 | 21743 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 21744 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 21745 | |
0114d602 DJ |
21746 | For example, if we're within the method foo() in the following |
21747 | code: | |
21748 | ||
21749 | namespace N { | |
21750 | class C { | |
21751 | void foo () { | |
21752 | } | |
21753 | }; | |
21754 | } | |
21755 | ||
21756 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 21757 | |
0d5cff50 | 21758 | static const char * |
e142c38c | 21759 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 21760 | { |
5e22e966 | 21761 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
0114d602 DJ |
21762 | struct die_info *parent, *spec_die; |
21763 | struct dwarf2_cu *spec_cu; | |
21764 | struct type *parent_type; | |
a121b7c1 | 21765 | const char *retval; |
63d06c5c | 21766 | |
9c37b5ae | 21767 | if (cu->language != language_cplus |
c44af4eb TT |
21768 | && cu->language != language_fortran && cu->language != language_d |
21769 | && cu->language != language_rust) | |
0114d602 DJ |
21770 | return ""; |
21771 | ||
96408a79 SA |
21772 | retval = anonymous_struct_prefix (die, cu); |
21773 | if (retval) | |
21774 | return retval; | |
21775 | ||
0114d602 DJ |
21776 | /* We have to be careful in the presence of DW_AT_specification. |
21777 | For example, with GCC 3.4, given the code | |
21778 | ||
21779 | namespace N { | |
21780 | void foo() { | |
21781 | // Definition of N::foo. | |
21782 | } | |
21783 | } | |
21784 | ||
21785 | then we'll have a tree of DIEs like this: | |
21786 | ||
21787 | 1: DW_TAG_compile_unit | |
21788 | 2: DW_TAG_namespace // N | |
21789 | 3: DW_TAG_subprogram // declaration of N::foo | |
21790 | 4: DW_TAG_subprogram // definition of N::foo | |
21791 | DW_AT_specification // refers to die #3 | |
21792 | ||
21793 | Thus, when processing die #4, we have to pretend that we're in | |
21794 | the context of its DW_AT_specification, namely the contex of die | |
21795 | #3. */ | |
21796 | spec_cu = cu; | |
21797 | spec_die = die_specification (die, &spec_cu); | |
21798 | if (spec_die == NULL) | |
21799 | parent = die->parent; | |
21800 | else | |
63d06c5c | 21801 | { |
0114d602 DJ |
21802 | parent = spec_die->parent; |
21803 | cu = spec_cu; | |
63d06c5c | 21804 | } |
0114d602 DJ |
21805 | |
21806 | if (parent == NULL) | |
21807 | return ""; | |
98bfdba5 PA |
21808 | else if (parent->building_fullname) |
21809 | { | |
21810 | const char *name; | |
21811 | const char *parent_name; | |
21812 | ||
21813 | /* It has been seen on RealView 2.2 built binaries, | |
21814 | DW_TAG_template_type_param types actually _defined_ as | |
21815 | children of the parent class: | |
21816 | ||
21817 | enum E {}; | |
21818 | template class <class Enum> Class{}; | |
21819 | Class<enum E> class_e; | |
21820 | ||
21821 | 1: DW_TAG_class_type (Class) | |
21822 | 2: DW_TAG_enumeration_type (E) | |
21823 | 3: DW_TAG_enumerator (enum1:0) | |
21824 | 3: DW_TAG_enumerator (enum2:1) | |
21825 | ... | |
21826 | 2: DW_TAG_template_type_param | |
21827 | DW_AT_type DW_FORM_ref_udata (E) | |
21828 | ||
21829 | Besides being broken debug info, it can put GDB into an | |
21830 | infinite loop. Consider: | |
21831 | ||
21832 | When we're building the full name for Class<E>, we'll start | |
21833 | at Class, and go look over its template type parameters, | |
21834 | finding E. We'll then try to build the full name of E, and | |
21835 | reach here. We're now trying to build the full name of E, | |
21836 | and look over the parent DIE for containing scope. In the | |
21837 | broken case, if we followed the parent DIE of E, we'd again | |
21838 | find Class, and once again go look at its template type | |
21839 | arguments, etc., etc. Simply don't consider such parent die | |
21840 | as source-level parent of this die (it can't be, the language | |
21841 | doesn't allow it), and break the loop here. */ | |
21842 | name = dwarf2_name (die, cu); | |
21843 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 21844 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
21845 | name ? name : "<unknown>", |
21846 | parent_name ? parent_name : "<unknown>"); | |
21847 | return ""; | |
21848 | } | |
63d06c5c | 21849 | else |
0114d602 DJ |
21850 | switch (parent->tag) |
21851 | { | |
63d06c5c | 21852 | case DW_TAG_namespace: |
0114d602 | 21853 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
21854 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
21855 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
21856 | Work around this problem here. */ | |
21857 | if (cu->language == language_cplus | |
7d93a1e0 | 21858 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 21859 | return ""; |
0114d602 | 21860 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 21861 | return parent_type->name (); |
63d06c5c | 21862 | case DW_TAG_class_type: |
680b30c7 | 21863 | case DW_TAG_interface_type: |
63d06c5c | 21864 | case DW_TAG_structure_type: |
0114d602 | 21865 | case DW_TAG_union_type: |
f55ee35c | 21866 | case DW_TAG_module: |
0114d602 | 21867 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
21868 | if (parent_type->name () != NULL) |
21869 | return parent_type->name (); | |
0114d602 DJ |
21870 | else |
21871 | /* An anonymous structure is only allowed non-static data | |
21872 | members; no typedefs, no member functions, et cetera. | |
21873 | So it does not need a prefix. */ | |
21874 | return ""; | |
abc72ce4 | 21875 | case DW_TAG_compile_unit: |
95554aad | 21876 | case DW_TAG_partial_unit: |
abc72ce4 DE |
21877 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
21878 | if (cu->language == language_cplus | |
5989a64e | 21879 | && !dwarf2_per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
21880 | && die->child != NULL |
21881 | && (die->tag == DW_TAG_class_type | |
21882 | || die->tag == DW_TAG_structure_type | |
21883 | || die->tag == DW_TAG_union_type)) | |
21884 | { | |
43816ebc | 21885 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
21886 | if (name != NULL) |
21887 | return name; | |
21888 | } | |
21889 | return ""; | |
0a4b0913 AB |
21890 | case DW_TAG_subprogram: |
21891 | /* Nested subroutines in Fortran get a prefix with the name | |
21892 | of the parent's subroutine. */ | |
21893 | if (cu->language == language_fortran) | |
21894 | { | |
21895 | if ((die->tag == DW_TAG_subprogram) | |
21896 | && (dwarf2_name (parent, cu) != NULL)) | |
21897 | return dwarf2_name (parent, cu); | |
21898 | } | |
21899 | return determine_prefix (parent, cu); | |
3d567982 TT |
21900 | case DW_TAG_enumeration_type: |
21901 | parent_type = read_type_die (parent, cu); | |
21902 | if (TYPE_DECLARED_CLASS (parent_type)) | |
21903 | { | |
7d93a1e0 SM |
21904 | if (parent_type->name () != NULL) |
21905 | return parent_type->name (); | |
3d567982 TT |
21906 | return ""; |
21907 | } | |
21908 | /* Fall through. */ | |
63d06c5c | 21909 | default: |
8176b9b8 | 21910 | return determine_prefix (parent, cu); |
63d06c5c | 21911 | } |
63d06c5c DC |
21912 | } |
21913 | ||
3e43a32a MS |
21914 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
21915 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
21916 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
21917 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
21918 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 21919 | |
f55ee35c | 21920 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
21921 | |
21922 | static char * | |
f55ee35c JK |
21923 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
21924 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 21925 | { |
f55ee35c | 21926 | const char *lead = ""; |
5c315b68 | 21927 | const char *sep; |
63d06c5c | 21928 | |
3e43a32a MS |
21929 | if (suffix == NULL || suffix[0] == '\0' |
21930 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 21931 | sep = ""; |
45280282 IB |
21932 | else if (cu->language == language_d) |
21933 | { | |
21934 | /* For D, the 'main' function could be defined in any module, but it | |
21935 | should never be prefixed. */ | |
21936 | if (strcmp (suffix, "D main") == 0) | |
21937 | { | |
21938 | prefix = ""; | |
21939 | sep = ""; | |
21940 | } | |
21941 | else | |
21942 | sep = "."; | |
21943 | } | |
f55ee35c JK |
21944 | else if (cu->language == language_fortran && physname) |
21945 | { | |
21946 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
21947 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
21948 | ||
21949 | lead = "__"; | |
21950 | sep = "_MOD_"; | |
21951 | } | |
987504bb JJ |
21952 | else |
21953 | sep = "::"; | |
63d06c5c | 21954 | |
6dd47d34 DE |
21955 | if (prefix == NULL) |
21956 | prefix = ""; | |
21957 | if (suffix == NULL) | |
21958 | suffix = ""; | |
21959 | ||
987504bb JJ |
21960 | if (obs == NULL) |
21961 | { | |
3e43a32a | 21962 | char *retval |
224c3ddb SM |
21963 | = ((char *) |
21964 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 21965 | |
f55ee35c JK |
21966 | strcpy (retval, lead); |
21967 | strcat (retval, prefix); | |
6dd47d34 DE |
21968 | strcat (retval, sep); |
21969 | strcat (retval, suffix); | |
63d06c5c DC |
21970 | return retval; |
21971 | } | |
987504bb JJ |
21972 | else |
21973 | { | |
21974 | /* We have an obstack. */ | |
f55ee35c | 21975 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 21976 | } |
63d06c5c DC |
21977 | } |
21978 | ||
71c25dea TT |
21979 | /* Get name of a die, return NULL if not found. */ |
21980 | ||
15d034d0 TT |
21981 | static const char * |
21982 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 21983 | struct objfile *objfile) |
71c25dea TT |
21984 | { |
21985 | if (name && cu->language == language_cplus) | |
21986 | { | |
596dc4ad TT |
21987 | gdb::unique_xmalloc_ptr<char> canon_name |
21988 | = cp_canonicalize_string (name); | |
71c25dea | 21989 | |
596dc4ad TT |
21990 | if (canon_name != nullptr) |
21991 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
21992 | } |
21993 | ||
21994 | return name; | |
c906108c SS |
21995 | } |
21996 | ||
96553a0c DE |
21997 | /* Get name of a die, return NULL if not found. |
21998 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 21999 | |
15d034d0 | 22000 | static const char * |
e142c38c | 22001 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22002 | { |
22003 | struct attribute *attr; | |
5e22e966 | 22004 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 22005 | |
e142c38c | 22006 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22007 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22008 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22009 | && die->tag != DW_TAG_class_type |
22010 | && die->tag != DW_TAG_interface_type | |
22011 | && die->tag != DW_TAG_structure_type | |
22012 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22013 | return NULL; |
22014 | ||
22015 | switch (die->tag) | |
22016 | { | |
22017 | case DW_TAG_compile_unit: | |
95554aad | 22018 | case DW_TAG_partial_unit: |
71c25dea TT |
22019 | /* Compilation units have a DW_AT_name that is a filename, not |
22020 | a source language identifier. */ | |
22021 | case DW_TAG_enumeration_type: | |
22022 | case DW_TAG_enumerator: | |
22023 | /* These tags always have simple identifiers already; no need | |
22024 | to canonicalize them. */ | |
22025 | return DW_STRING (attr); | |
907af001 | 22026 | |
96553a0c DE |
22027 | case DW_TAG_namespace: |
22028 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22029 | return DW_STRING (attr); | |
22030 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22031 | ||
907af001 UW |
22032 | case DW_TAG_class_type: |
22033 | case DW_TAG_interface_type: | |
22034 | case DW_TAG_structure_type: | |
22035 | case DW_TAG_union_type: | |
22036 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22037 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22038 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22039 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22040 | if (attr && DW_STRING (attr) |
61012eef GB |
22041 | && (startswith (DW_STRING (attr), "._") |
22042 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22043 | return NULL; |
53832f31 TT |
22044 | |
22045 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22046 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22047 | if (!attr || DW_STRING (attr) == NULL) | |
22048 | { | |
73b9be8b | 22049 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22050 | if (attr == NULL || DW_STRING (attr) == NULL) |
22051 | return NULL; | |
22052 | ||
df5c6c50 JK |
22053 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22054 | call for the same DIE. */ | |
22055 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 22056 | { |
43816ebc TT |
22057 | gdb::unique_xmalloc_ptr<char> demangled |
22058 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
22059 | if (demangled == nullptr) |
22060 | return nullptr; | |
43816ebc | 22061 | |
be1e3d3e | 22062 | DW_STRING (attr) = objfile->intern (demangled.get ()); |
53832f31 | 22063 | DW_STRING_IS_CANONICAL (attr) = 1; |
53832f31 | 22064 | } |
67430cd0 TT |
22065 | |
22066 | /* Strip any leading namespaces/classes, keep only the base name. | |
22067 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22068 | const char *base = strrchr (DW_STRING (attr), ':'); | |
22069 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22070 | return &base[1]; | |
22071 | else | |
22072 | return DW_STRING (attr); | |
53832f31 | 22073 | } |
907af001 UW |
22074 | break; |
22075 | ||
71c25dea | 22076 | default: |
907af001 UW |
22077 | break; |
22078 | } | |
22079 | ||
22080 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22081 | { | |
be1e3d3e TT |
22082 | DW_STRING (attr) = dwarf2_canonicalize_name (DW_STRING (attr), cu, |
22083 | objfile); | |
907af001 | 22084 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22085 | } |
907af001 | 22086 | return DW_STRING (attr); |
9219021c DC |
22087 | } |
22088 | ||
22089 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22090 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22091 | containing the return value on output. */ | |
9219021c DC |
22092 | |
22093 | static struct die_info * | |
f2f0e013 | 22094 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22095 | { |
22096 | struct attribute *attr; | |
9219021c | 22097 | |
f2f0e013 | 22098 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22099 | if (attr == NULL) |
22100 | return NULL; | |
22101 | ||
f2f0e013 | 22102 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22103 | } |
22104 | ||
f9aca02d | 22105 | static void |
d97bc12b | 22106 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22107 | { |
22108 | unsigned int i; | |
22109 | ||
d97bc12b | 22110 | print_spaces (indent, f); |
9d8780f0 | 22111 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22112 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22113 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22114 | |
22115 | if (die->parent != NULL) | |
22116 | { | |
22117 | print_spaces (indent, f); | |
9d8780f0 SM |
22118 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22119 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22120 | } |
22121 | ||
22122 | print_spaces (indent, f); | |
22123 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22124 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22125 | |
d97bc12b DE |
22126 | print_spaces (indent, f); |
22127 | fprintf_unfiltered (f, " attributes:\n"); | |
22128 | ||
c906108c SS |
22129 | for (i = 0; i < die->num_attrs; ++i) |
22130 | { | |
d97bc12b DE |
22131 | print_spaces (indent, f); |
22132 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22133 | dwarf_attr_name (die->attrs[i].name), |
22134 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22135 | |
c906108c SS |
22136 | switch (die->attrs[i].form) |
22137 | { | |
c906108c | 22138 | case DW_FORM_addr: |
336d760d | 22139 | case DW_FORM_addrx: |
3019eac3 | 22140 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22141 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22142 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22143 | break; |
22144 | case DW_FORM_block2: | |
22145 | case DW_FORM_block4: | |
22146 | case DW_FORM_block: | |
22147 | case DW_FORM_block1: | |
56eb65bd SP |
22148 | fprintf_unfiltered (f, "block: size %s", |
22149 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22150 | break; |
2dc7f7b3 | 22151 | case DW_FORM_exprloc: |
56eb65bd SP |
22152 | fprintf_unfiltered (f, "expression: size %s", |
22153 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22154 | break; |
0224619f JK |
22155 | case DW_FORM_data16: |
22156 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22157 | break; | |
4568ecf9 DE |
22158 | case DW_FORM_ref_addr: |
22159 | fprintf_unfiltered (f, "ref address: "); | |
22160 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22161 | break; | |
36586728 TT |
22162 | case DW_FORM_GNU_ref_alt: |
22163 | fprintf_unfiltered (f, "alt ref address: "); | |
22164 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22165 | break; | |
10b3939b DJ |
22166 | case DW_FORM_ref1: |
22167 | case DW_FORM_ref2: | |
22168 | case DW_FORM_ref4: | |
4568ecf9 DE |
22169 | case DW_FORM_ref8: |
22170 | case DW_FORM_ref_udata: | |
d97bc12b | 22171 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22172 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22173 | break; |
c906108c SS |
22174 | case DW_FORM_data1: |
22175 | case DW_FORM_data2: | |
22176 | case DW_FORM_data4: | |
ce5d95e1 | 22177 | case DW_FORM_data8: |
c906108c SS |
22178 | case DW_FORM_udata: |
22179 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22180 | fprintf_unfiltered (f, "constant: %s", |
22181 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22182 | break; |
2dc7f7b3 TT |
22183 | case DW_FORM_sec_offset: |
22184 | fprintf_unfiltered (f, "section offset: %s", | |
22185 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22186 | break; | |
55f1336d | 22187 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22188 | fprintf_unfiltered (f, "signature: %s", |
22189 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22190 | break; |
c906108c | 22191 | case DW_FORM_string: |
4bdf3d34 | 22192 | case DW_FORM_strp: |
43988095 | 22193 | case DW_FORM_line_strp: |
cf532bd1 | 22194 | case DW_FORM_strx: |
3019eac3 | 22195 | case DW_FORM_GNU_str_index: |
36586728 | 22196 | case DW_FORM_GNU_strp_alt: |
8285870a | 22197 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22198 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22199 | ? DW_STRING (&die->attrs[i]) : "", |
22200 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22201 | break; |
22202 | case DW_FORM_flag: | |
22203 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22204 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22205 | else |
d97bc12b | 22206 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22207 | break; |
2dc7f7b3 TT |
22208 | case DW_FORM_flag_present: |
22209 | fprintf_unfiltered (f, "flag: TRUE"); | |
22210 | break; | |
a8329558 | 22211 | case DW_FORM_indirect: |
0963b4bd MS |
22212 | /* The reader will have reduced the indirect form to |
22213 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 22214 | fprintf_unfiltered (f, |
3e43a32a | 22215 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 22216 | break; |
663c44ac JK |
22217 | case DW_FORM_implicit_const: |
22218 | fprintf_unfiltered (f, "constant: %s", | |
22219 | plongest (DW_SND (&die->attrs[i]))); | |
22220 | break; | |
c906108c | 22221 | default: |
d97bc12b | 22222 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22223 | die->attrs[i].form); |
d97bc12b | 22224 | break; |
c906108c | 22225 | } |
d97bc12b | 22226 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22227 | } |
22228 | } | |
22229 | ||
f9aca02d | 22230 | static void |
d97bc12b | 22231 | dump_die_for_error (struct die_info *die) |
c906108c | 22232 | { |
d97bc12b DE |
22233 | dump_die_shallow (gdb_stderr, 0, die); |
22234 | } | |
22235 | ||
22236 | static void | |
22237 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22238 | { | |
22239 | int indent = level * 4; | |
22240 | ||
22241 | gdb_assert (die != NULL); | |
22242 | ||
22243 | if (level >= max_level) | |
22244 | return; | |
22245 | ||
22246 | dump_die_shallow (f, indent, die); | |
22247 | ||
22248 | if (die->child != NULL) | |
c906108c | 22249 | { |
d97bc12b DE |
22250 | print_spaces (indent, f); |
22251 | fprintf_unfiltered (f, " Children:"); | |
22252 | if (level + 1 < max_level) | |
22253 | { | |
22254 | fprintf_unfiltered (f, "\n"); | |
22255 | dump_die_1 (f, level + 1, max_level, die->child); | |
22256 | } | |
22257 | else | |
22258 | { | |
3e43a32a MS |
22259 | fprintf_unfiltered (f, |
22260 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22261 | } |
22262 | } | |
22263 | ||
22264 | if (die->sibling != NULL && level > 0) | |
22265 | { | |
22266 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22267 | } |
22268 | } | |
22269 | ||
d97bc12b DE |
22270 | /* This is called from the pdie macro in gdbinit.in. |
22271 | It's not static so gcc will keep a copy callable from gdb. */ | |
22272 | ||
22273 | void | |
22274 | dump_die (struct die_info *die, int max_level) | |
22275 | { | |
22276 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22277 | } | |
22278 | ||
f9aca02d | 22279 | static void |
51545339 | 22280 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22281 | { |
51545339 | 22282 | void **slot; |
c906108c | 22283 | |
9c541725 PA |
22284 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22285 | to_underlying (die->sect_off), | |
b64f50a1 | 22286 | INSERT); |
51545339 DJ |
22287 | |
22288 | *slot = die; | |
c906108c SS |
22289 | } |
22290 | ||
348e048f DE |
22291 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22292 | On entry *REF_CU is the CU of SRC_DIE. | |
22293 | On exit *REF_CU is the CU of the result. */ | |
22294 | ||
22295 | static struct die_info * | |
ff39bb5e | 22296 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22297 | struct dwarf2_cu **ref_cu) |
22298 | { | |
22299 | struct die_info *die; | |
22300 | ||
cd6c91b4 | 22301 | if (attr->form_is_ref ()) |
348e048f | 22302 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22303 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22304 | die = follow_die_sig (src_die, attr, ref_cu); |
22305 | else | |
22306 | { | |
22307 | dump_die_for_error (src_die); | |
22308 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 22309 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
22310 | } |
22311 | ||
22312 | return die; | |
03dd20cc DJ |
22313 | } |
22314 | ||
5c631832 | 22315 | /* Follow reference OFFSET. |
673bfd45 DE |
22316 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22317 | On exit *REF_CU is the CU of the result. | |
22318 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22319 | |
f9aca02d | 22320 | static struct die_info * |
9c541725 | 22321 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22322 | struct dwarf2_cu **ref_cu) |
c906108c | 22323 | { |
10b3939b | 22324 | struct die_info temp_die; |
f2f0e013 | 22325 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
5e22e966 | 22326 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
10b3939b | 22327 | |
348e048f DE |
22328 | gdb_assert (cu->per_cu != NULL); |
22329 | ||
98bfdba5 PA |
22330 | target_cu = cu; |
22331 | ||
3019eac3 | 22332 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22333 | { |
22334 | /* .debug_types CUs cannot reference anything outside their CU. | |
22335 | If they need to, they have to reference a signatured type via | |
55f1336d | 22336 | DW_FORM_ref_sig8. */ |
4057dfde | 22337 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 22338 | return NULL; |
348e048f | 22339 | } |
36586728 | 22340 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 22341 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
22342 | { |
22343 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22344 | |
9c541725 | 22345 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22346 | dwarf2_per_objfile); |
03dd20cc DJ |
22347 | |
22348 | /* If necessary, add it to the queue and load its DIEs. */ | |
120ce1b5 | 22349 | if (maybe_queue_comp_unit (cu, per_cu, dwarf2_per_objfile, cu->language)) |
ab432490 | 22350 | load_full_comp_unit (per_cu, dwarf2_per_objfile, false, cu->language); |
03dd20cc | 22351 | |
7188ed02 | 22352 | target_cu = dwarf2_per_objfile->get_cu (per_cu); |
10b3939b | 22353 | } |
98bfdba5 PA |
22354 | else if (cu->dies == NULL) |
22355 | { | |
22356 | /* We're loading full DIEs during partial symbol reading. */ | |
5989a64e | 22357 | gdb_assert (dwarf2_per_objfile->per_bfd->reading_partial_symbols); |
ab432490 SM |
22358 | load_full_comp_unit (cu->per_cu, dwarf2_per_objfile, false, |
22359 | language_minimal); | |
98bfdba5 | 22360 | } |
c906108c | 22361 | |
f2f0e013 | 22362 | *ref_cu = target_cu; |
9c541725 | 22363 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22364 | |
22365 | if (target_cu != cu) | |
22366 | target_cu->ancestor = cu; | |
22367 | ||
9a3c8263 | 22368 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22369 | &temp_die, |
22370 | to_underlying (sect_off)); | |
5c631832 | 22371 | } |
10b3939b | 22372 | |
5c631832 JK |
22373 | /* Follow reference attribute ATTR of SRC_DIE. |
22374 | On entry *REF_CU is the CU of SRC_DIE. | |
22375 | On exit *REF_CU is the CU of the result. */ | |
22376 | ||
22377 | static struct die_info * | |
ff39bb5e | 22378 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22379 | struct dwarf2_cu **ref_cu) |
22380 | { | |
0826b30a | 22381 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
22382 | struct dwarf2_cu *cu = *ref_cu; |
22383 | struct die_info *die; | |
22384 | ||
9c541725 | 22385 | die = follow_die_offset (sect_off, |
36586728 TT |
22386 | (attr->form == DW_FORM_GNU_ref_alt |
22387 | || cu->per_cu->is_dwz), | |
22388 | ref_cu); | |
5c631832 | 22389 | if (!die) |
9d8780f0 SM |
22390 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22391 | "at %s [in module %s]"), | |
22392 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22393 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 22394 | |
5c631832 JK |
22395 | return die; |
22396 | } | |
22397 | ||
d4c9a4f8 | 22398 | /* See read.h. */ |
5c631832 JK |
22399 | |
22400 | struct dwarf2_locexpr_baton | |
9c541725 | 22401 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22402 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22403 | dwarf2_per_objfile *dwarf2_per_objfile, |
8b9737bf | 22404 | CORE_ADDR (*get_frame_pc) (void *baton), |
e4a62c65 | 22405 | void *baton, bool resolve_abstract_p) |
5c631832 | 22406 | { |
5c631832 JK |
22407 | struct die_info *die; |
22408 | struct attribute *attr; | |
22409 | struct dwarf2_locexpr_baton retval; | |
12359b5e | 22410 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8cf6f0b1 | 22411 | |
7188ed02 | 22412 | dwarf2_cu *cu = dwarf2_per_objfile->get_cu (per_cu); |
1b555f17 SM |
22413 | if (cu == nullptr) |
22414 | cu = load_cu (per_cu, dwarf2_per_objfile, false); | |
22415 | ||
22416 | if (cu == nullptr) | |
cc12ce38 DE |
22417 | { |
22418 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22419 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22420 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22421 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22422 | } |
918dd910 | 22423 | |
9c541725 | 22424 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22425 | if (!die) |
9d8780f0 SM |
22426 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22427 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
22428 | |
22429 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 22430 | if (!attr && resolve_abstract_p |
5989a64e SM |
22431 | && (dwarf2_per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
22432 | != dwarf2_per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 TV |
22433 | { |
22434 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 22435 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 22436 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 22437 | |
3360b6e7 | 22438 | for (const auto &cand_off |
5989a64e | 22439 | : dwarf2_per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 22440 | { |
3360b6e7 TV |
22441 | struct dwarf2_cu *cand_cu = cu; |
22442 | struct die_info *cand | |
22443 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
22444 | if (!cand | |
22445 | || !cand->parent | |
e4a62c65 TV |
22446 | || cand->parent->tag != DW_TAG_subprogram) |
22447 | continue; | |
22448 | ||
22449 | CORE_ADDR pc_low, pc_high; | |
22450 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
22451 | if (pc_low == ((CORE_ADDR) -1)) |
22452 | continue; | |
22453 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
22454 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
22455 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
22456 | continue; |
22457 | ||
22458 | die = cand; | |
22459 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22460 | break; | |
22461 | } | |
22462 | } | |
22463 | ||
5c631832 JK |
22464 | if (!attr) |
22465 | { | |
e103e986 JK |
22466 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22467 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22468 | |
e103e986 | 22469 | retval.data = NULL; |
5c631832 JK |
22470 | retval.size = 0; |
22471 | } | |
cd6c91b4 | 22472 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
22473 | { |
22474 | struct dwarf2_loclist_baton loclist_baton; | |
22475 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
22476 | size_t size; | |
22477 | ||
22478 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
22479 | ||
22480 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
22481 | &size, pc); | |
22482 | retval.size = size; | |
22483 | } | |
5c631832 JK |
22484 | else |
22485 | { | |
4fc6c0d5 | 22486 | if (!attr->form_is_block ()) |
9d8780f0 | 22487 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 22488 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 22489 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
22490 | |
22491 | retval.data = DW_BLOCK (attr)->data; | |
22492 | retval.size = DW_BLOCK (attr)->size; | |
22493 | } | |
a50264ba | 22494 | retval.per_objfile = dwarf2_per_objfile; |
5c631832 | 22495 | retval.per_cu = cu->per_cu; |
918dd910 | 22496 | |
7188ed02 | 22497 | dwarf2_per_objfile->age_comp_units (); |
918dd910 | 22498 | |
5c631832 | 22499 | return retval; |
348e048f DE |
22500 | } |
22501 | ||
d4c9a4f8 | 22502 | /* See read.h. */ |
8b9737bf TT |
22503 | |
22504 | struct dwarf2_locexpr_baton | |
22505 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 22506 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22507 | dwarf2_per_objfile *per_objfile, |
8b9737bf TT |
22508 | CORE_ADDR (*get_frame_pc) (void *baton), |
22509 | void *baton) | |
22510 | { | |
9c541725 | 22511 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 22512 | |
14095eb3 SM |
22513 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
22514 | get_frame_pc, baton); | |
8b9737bf TT |
22515 | } |
22516 | ||
b6807d98 TT |
22517 | /* Write a constant of a given type as target-ordered bytes into |
22518 | OBSTACK. */ | |
22519 | ||
22520 | static const gdb_byte * | |
22521 | write_constant_as_bytes (struct obstack *obstack, | |
22522 | enum bfd_endian byte_order, | |
22523 | struct type *type, | |
22524 | ULONGEST value, | |
22525 | LONGEST *len) | |
22526 | { | |
22527 | gdb_byte *result; | |
22528 | ||
22529 | *len = TYPE_LENGTH (type); | |
224c3ddb | 22530 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22531 | store_unsigned_integer (result, *len, byte_order, value); |
22532 | ||
22533 | return result; | |
22534 | } | |
22535 | ||
d4c9a4f8 | 22536 | /* See read.h. */ |
b6807d98 TT |
22537 | |
22538 | const gdb_byte * | |
9c541725 | 22539 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 22540 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22541 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 22542 | obstack *obstack, |
b6807d98 TT |
22543 | LONGEST *len) |
22544 | { | |
b6807d98 TT |
22545 | struct die_info *die; |
22546 | struct attribute *attr; | |
22547 | const gdb_byte *result = NULL; | |
22548 | struct type *type; | |
22549 | LONGEST value; | |
22550 | enum bfd_endian byte_order; | |
14095eb3 | 22551 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 22552 | |
7188ed02 | 22553 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
22554 | if (cu == nullptr) |
22555 | cu = load_cu (per_cu, per_objfile, false); | |
22556 | ||
22557 | if (cu == nullptr) | |
cc12ce38 DE |
22558 | { |
22559 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22560 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22561 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22562 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22563 | } |
b6807d98 | 22564 | |
9c541725 | 22565 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 22566 | if (!die) |
9d8780f0 SM |
22567 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22568 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
22569 | |
22570 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
22571 | if (attr == NULL) | |
22572 | return NULL; | |
22573 | ||
e3b94546 | 22574 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
22575 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
22576 | ||
22577 | switch (attr->form) | |
22578 | { | |
22579 | case DW_FORM_addr: | |
336d760d | 22580 | case DW_FORM_addrx: |
b6807d98 TT |
22581 | case DW_FORM_GNU_addr_index: |
22582 | { | |
22583 | gdb_byte *tem; | |
22584 | ||
22585 | *len = cu->header.addr_size; | |
224c3ddb | 22586 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22587 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
22588 | result = tem; | |
22589 | } | |
22590 | break; | |
22591 | case DW_FORM_string: | |
22592 | case DW_FORM_strp: | |
cf532bd1 | 22593 | case DW_FORM_strx: |
b6807d98 TT |
22594 | case DW_FORM_GNU_str_index: |
22595 | case DW_FORM_GNU_strp_alt: | |
22596 | /* DW_STRING is already allocated on the objfile obstack, point | |
22597 | directly to it. */ | |
22598 | result = (const gdb_byte *) DW_STRING (attr); | |
22599 | *len = strlen (DW_STRING (attr)); | |
22600 | break; | |
22601 | case DW_FORM_block1: | |
22602 | case DW_FORM_block2: | |
22603 | case DW_FORM_block4: | |
22604 | case DW_FORM_block: | |
22605 | case DW_FORM_exprloc: | |
0224619f | 22606 | case DW_FORM_data16: |
b6807d98 TT |
22607 | result = DW_BLOCK (attr)->data; |
22608 | *len = DW_BLOCK (attr)->size; | |
22609 | break; | |
22610 | ||
22611 | /* The DW_AT_const_value attributes are supposed to carry the | |
22612 | symbol's value "represented as it would be on the target | |
22613 | architecture." By the time we get here, it's already been | |
22614 | converted to host endianness, so we just need to sign- or | |
22615 | zero-extend it as appropriate. */ | |
22616 | case DW_FORM_data1: | |
22617 | type = die_type (die, cu); | |
22618 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
22619 | if (result == NULL) | |
22620 | result = write_constant_as_bytes (obstack, byte_order, | |
22621 | type, value, len); | |
22622 | break; | |
22623 | case DW_FORM_data2: | |
22624 | type = die_type (die, cu); | |
22625 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
22626 | if (result == NULL) | |
22627 | result = write_constant_as_bytes (obstack, byte_order, | |
22628 | type, value, len); | |
22629 | break; | |
22630 | case DW_FORM_data4: | |
22631 | type = die_type (die, cu); | |
22632 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
22633 | if (result == NULL) | |
22634 | result = write_constant_as_bytes (obstack, byte_order, | |
22635 | type, value, len); | |
22636 | break; | |
22637 | case DW_FORM_data8: | |
22638 | type = die_type (die, cu); | |
22639 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
22640 | if (result == NULL) | |
22641 | result = write_constant_as_bytes (obstack, byte_order, | |
22642 | type, value, len); | |
22643 | break; | |
22644 | ||
22645 | case DW_FORM_sdata: | |
663c44ac | 22646 | case DW_FORM_implicit_const: |
b6807d98 TT |
22647 | type = die_type (die, cu); |
22648 | result = write_constant_as_bytes (obstack, byte_order, | |
22649 | type, DW_SND (attr), len); | |
22650 | break; | |
22651 | ||
22652 | case DW_FORM_udata: | |
22653 | type = die_type (die, cu); | |
22654 | result = write_constant_as_bytes (obstack, byte_order, | |
22655 | type, DW_UNSND (attr), len); | |
22656 | break; | |
22657 | ||
22658 | default: | |
b98664d3 | 22659 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
22660 | dwarf_form_name (attr->form)); |
22661 | break; | |
22662 | } | |
22663 | ||
22664 | return result; | |
22665 | } | |
22666 | ||
d4c9a4f8 | 22667 | /* See read.h. */ |
7942e96e AA |
22668 | |
22669 | struct type * | |
9c541725 | 22670 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
22671 | dwarf2_per_cu_data *per_cu, |
22672 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 22673 | { |
7942e96e AA |
22674 | struct die_info *die; |
22675 | ||
7188ed02 | 22676 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
22677 | if (cu == nullptr) |
22678 | cu = load_cu (per_cu, per_objfile, false); | |
22679 | ||
22680 | if (cu == nullptr) | |
22681 | return nullptr; | |
7942e96e | 22682 | |
9c541725 | 22683 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
22684 | if (!die) |
22685 | return NULL; | |
22686 | ||
22687 | return die_type (die, cu); | |
22688 | } | |
22689 | ||
8cb5117c | 22690 | /* See read.h. */ |
8a9b8146 TT |
22691 | |
22692 | struct type * | |
b64f50a1 | 22693 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
22694 | dwarf2_per_cu_data *per_cu, |
22695 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 22696 | { |
9c541725 | 22697 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 22698 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
22699 | } |
22700 | ||
ac9ec31b | 22701 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 22702 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
22703 | On exit *REF_CU is the CU of the result. |
22704 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
22705 | |
22706 | static struct die_info * | |
ac9ec31b DE |
22707 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
22708 | struct dwarf2_cu **ref_cu) | |
348e048f | 22709 | { |
348e048f | 22710 | struct die_info temp_die; |
c24bdb02 | 22711 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 22712 | struct die_info *die; |
120ce1b5 SM |
22713 | dwarf2_per_objfile *dwarf2_per_objfile = (*ref_cu)->per_objfile; |
22714 | ||
348e048f | 22715 | |
ac9ec31b DE |
22716 | /* While it might be nice to assert sig_type->type == NULL here, |
22717 | we can get here for DW_AT_imported_declaration where we need | |
22718 | the DIE not the type. */ | |
348e048f DE |
22719 | |
22720 | /* If necessary, add it to the queue and load its DIEs. */ | |
22721 | ||
120ce1b5 SM |
22722 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, dwarf2_per_objfile, |
22723 | language_minimal)) | |
22724 | read_signatured_type (sig_type, dwarf2_per_objfile); | |
348e048f | 22725 | |
7188ed02 | 22726 | sig_cu = dwarf2_per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 22727 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
22728 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
22729 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 22730 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 22731 | to_underlying (temp_die.sect_off)); |
348e048f DE |
22732 | if (die) |
22733 | { | |
796a7ff8 DE |
22734 | /* For .gdb_index version 7 keep track of included TUs. |
22735 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
5989a64e SM |
22736 | if (dwarf2_per_objfile->per_bfd->index_table != NULL |
22737 | && dwarf2_per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 22738 | { |
ae640021 | 22739 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
22740 | } |
22741 | ||
348e048f | 22742 | *ref_cu = sig_cu; |
c24bdb02 KS |
22743 | if (sig_cu != cu) |
22744 | sig_cu->ancestor = cu; | |
22745 | ||
348e048f DE |
22746 | return die; |
22747 | } | |
22748 | ||
ac9ec31b DE |
22749 | return NULL; |
22750 | } | |
22751 | ||
22752 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
22753 | On entry *REF_CU is the CU of SRC_DIE. | |
22754 | On exit *REF_CU is the CU of the result. | |
22755 | The result is the DIE of the type. | |
22756 | If the referenced type cannot be found an error is thrown. */ | |
22757 | ||
22758 | static struct die_info * | |
ff39bb5e | 22759 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
22760 | struct dwarf2_cu **ref_cu) |
22761 | { | |
22762 | ULONGEST signature = DW_SIGNATURE (attr); | |
22763 | struct signatured_type *sig_type; | |
22764 | struct die_info *die; | |
22765 | ||
22766 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
22767 | ||
a2ce51a0 | 22768 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
22769 | /* sig_type will be NULL if the signatured type is missing from |
22770 | the debug info. */ | |
22771 | if (sig_type == NULL) | |
22772 | { | |
22773 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
22774 | " from DIE at %s [in module %s]"), |
22775 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22776 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22777 | } |
22778 | ||
22779 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
22780 | if (die == NULL) | |
22781 | { | |
22782 | dump_die_for_error (src_die); | |
22783 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
22784 | " from DIE at %s [in module %s]"), |
22785 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22786 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22787 | } |
22788 | ||
22789 | return die; | |
22790 | } | |
22791 | ||
22792 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
22793 | reading in and processing the type unit if necessary. */ | |
22794 | ||
22795 | static struct type * | |
22796 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
22797 | struct dwarf2_cu *cu) | |
22798 | { | |
5e22e966 | 22799 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ac9ec31b DE |
22800 | struct signatured_type *sig_type; |
22801 | struct dwarf2_cu *type_cu; | |
22802 | struct die_info *type_die; | |
22803 | struct type *type; | |
22804 | ||
a2ce51a0 | 22805 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
22806 | /* sig_type will be NULL if the signatured type is missing from |
22807 | the debug info. */ | |
22808 | if (sig_type == NULL) | |
22809 | { | |
b98664d3 | 22810 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
22811 | " from DIE at %s [in module %s]"), |
22812 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22813 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22814 | return build_error_marker_type (cu, die); |
22815 | } | |
22816 | ||
22817 | /* If we already know the type we're done. */ | |
e286671b TT |
22818 | type = dwarf2_per_objfile->get_type_for_signatured_type (sig_type); |
22819 | if (type != nullptr) | |
22820 | return type; | |
ac9ec31b DE |
22821 | |
22822 | type_cu = cu; | |
22823 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
22824 | if (type_die != NULL) | |
22825 | { | |
22826 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
22827 | is created. This is important, for example, because for c++ classes | |
22828 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
22829 | type = read_type_die (type_die, type_cu); | |
22830 | if (type == NULL) | |
22831 | { | |
b98664d3 | 22832 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
22833 | " referenced from DIE at %s [in module %s]"), |
22834 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22835 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22836 | type = build_error_marker_type (cu, die); |
22837 | } | |
22838 | } | |
22839 | else | |
22840 | { | |
b98664d3 | 22841 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
22842 | " from DIE at %s [in module %s]"), |
22843 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22844 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22845 | type = build_error_marker_type (cu, die); |
22846 | } | |
e286671b TT |
22847 | |
22848 | dwarf2_per_objfile->set_type_for_signatured_type (sig_type, type); | |
ac9ec31b DE |
22849 | |
22850 | return type; | |
22851 | } | |
22852 | ||
22853 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
22854 | reading in and processing the type unit if necessary. */ | |
22855 | ||
22856 | static struct type * | |
ff39bb5e | 22857 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 22858 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
22859 | { |
22860 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 22861 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22862 | { |
22863 | struct dwarf2_cu *type_cu = cu; | |
22864 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
22865 | ||
22866 | return read_type_die (type_die, type_cu); | |
22867 | } | |
22868 | else if (attr->form == DW_FORM_ref_sig8) | |
22869 | { | |
22870 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
22871 | } | |
22872 | else | |
22873 | { | |
5e22e966 | 22874 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 22875 | |
b98664d3 | 22876 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
22877 | " at %s [in module %s]"), |
22878 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 22879 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22880 | return build_error_marker_type (cu, die); |
22881 | } | |
348e048f DE |
22882 | } |
22883 | ||
e5fe5e75 | 22884 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
22885 | |
22886 | static void | |
ab432490 SM |
22887 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
22888 | dwarf2_per_objfile *per_objfile) | |
348e048f | 22889 | { |
52dc124a | 22890 | struct signatured_type *sig_type; |
348e048f | 22891 | |
f4dc4d17 | 22892 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 22893 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 22894 | |
6721b2ec DE |
22895 | /* We have the per_cu, but we need the signatured_type. |
22896 | Fortunately this is an easy translation. */ | |
22897 | gdb_assert (per_cu->is_debug_types); | |
22898 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 22899 | |
7188ed02 | 22900 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 22901 | |
ab432490 | 22902 | read_signatured_type (sig_type, per_objfile); |
348e048f | 22903 | |
7188ed02 | 22904 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
22905 | } |
22906 | ||
3019eac3 DE |
22907 | /* Read in a signatured type and build its CU and DIEs. |
22908 | If the type is a stub for the real type in a DWO file, | |
22909 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
22910 | |
22911 | static void | |
ab432490 SM |
22912 | read_signatured_type (signatured_type *sig_type, |
22913 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
22914 | { |
22915 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 22916 | |
3019eac3 | 22917 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 22918 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 22919 | |
2e671100 | 22920 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
22921 | |
22922 | if (!reader.dummy_p) | |
22923 | { | |
22924 | struct dwarf2_cu *cu = reader.cu; | |
22925 | const gdb_byte *info_ptr = reader.info_ptr; | |
22926 | ||
22927 | gdb_assert (cu->die_hash == NULL); | |
22928 | cu->die_hash = | |
22929 | htab_create_alloc_ex (cu->header.length / 12, | |
22930 | die_hash, | |
22931 | die_eq, | |
22932 | NULL, | |
22933 | &cu->comp_unit_obstack, | |
22934 | hashtab_obstack_allocate, | |
22935 | dummy_obstack_deallocate); | |
22936 | ||
3e225074 | 22937 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
22938 | reader.comp_unit_die->child |
22939 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
22940 | reader.comp_unit_die); | |
22941 | cu->dies = reader.comp_unit_die; | |
22942 | /* comp_unit_die is not stored in die_hash, no need. */ | |
22943 | ||
22944 | /* We try not to read any attributes in this function, because | |
22945 | not all CUs needed for references have been loaded yet, and | |
22946 | symbol table processing isn't initialized. But we have to | |
22947 | set the CU language, or we won't be able to build types | |
22948 | correctly. Similarly, if we do not read the producer, we can | |
22949 | not apply producer-specific interpretation. */ | |
22950 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
22951 | |
22952 | reader.keep (); | |
c0ab21c2 TT |
22953 | } |
22954 | ||
7ee85ab1 | 22955 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
22956 | } |
22957 | ||
c906108c SS |
22958 | /* Decode simple location descriptions. |
22959 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
22960 | the location and return the value. If COMPUTED is non-null, it is |
22961 | set to true to indicate that decoding was successful, and false | |
22962 | otherwise. If COMPUTED is null, then this function may emit a | |
22963 | complaint. */ | |
c906108c SS |
22964 | |
22965 | static CORE_ADDR | |
7d79de9a | 22966 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 22967 | { |
5e22e966 | 22968 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
22969 | size_t i; |
22970 | size_t size = blk->size; | |
d521ce57 | 22971 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
22972 | CORE_ADDR stack[64]; |
22973 | int stacki; | |
22974 | unsigned int bytes_read, unsnd; | |
22975 | gdb_byte op; | |
c906108c | 22976 | |
7d79de9a TT |
22977 | if (computed != nullptr) |
22978 | *computed = false; | |
22979 | ||
21ae7a4d JK |
22980 | i = 0; |
22981 | stacki = 0; | |
22982 | stack[stacki] = 0; | |
22983 | stack[++stacki] = 0; | |
22984 | ||
22985 | while (i < size) | |
22986 | { | |
22987 | op = data[i++]; | |
22988 | switch (op) | |
22989 | { | |
22990 | case DW_OP_lit0: | |
22991 | case DW_OP_lit1: | |
22992 | case DW_OP_lit2: | |
22993 | case DW_OP_lit3: | |
22994 | case DW_OP_lit4: | |
22995 | case DW_OP_lit5: | |
22996 | case DW_OP_lit6: | |
22997 | case DW_OP_lit7: | |
22998 | case DW_OP_lit8: | |
22999 | case DW_OP_lit9: | |
23000 | case DW_OP_lit10: | |
23001 | case DW_OP_lit11: | |
23002 | case DW_OP_lit12: | |
23003 | case DW_OP_lit13: | |
23004 | case DW_OP_lit14: | |
23005 | case DW_OP_lit15: | |
23006 | case DW_OP_lit16: | |
23007 | case DW_OP_lit17: | |
23008 | case DW_OP_lit18: | |
23009 | case DW_OP_lit19: | |
23010 | case DW_OP_lit20: | |
23011 | case DW_OP_lit21: | |
23012 | case DW_OP_lit22: | |
23013 | case DW_OP_lit23: | |
23014 | case DW_OP_lit24: | |
23015 | case DW_OP_lit25: | |
23016 | case DW_OP_lit26: | |
23017 | case DW_OP_lit27: | |
23018 | case DW_OP_lit28: | |
23019 | case DW_OP_lit29: | |
23020 | case DW_OP_lit30: | |
23021 | case DW_OP_lit31: | |
23022 | stack[++stacki] = op - DW_OP_lit0; | |
23023 | break; | |
f1bea926 | 23024 | |
21ae7a4d JK |
23025 | case DW_OP_reg0: |
23026 | case DW_OP_reg1: | |
23027 | case DW_OP_reg2: | |
23028 | case DW_OP_reg3: | |
23029 | case DW_OP_reg4: | |
23030 | case DW_OP_reg5: | |
23031 | case DW_OP_reg6: | |
23032 | case DW_OP_reg7: | |
23033 | case DW_OP_reg8: | |
23034 | case DW_OP_reg9: | |
23035 | case DW_OP_reg10: | |
23036 | case DW_OP_reg11: | |
23037 | case DW_OP_reg12: | |
23038 | case DW_OP_reg13: | |
23039 | case DW_OP_reg14: | |
23040 | case DW_OP_reg15: | |
23041 | case DW_OP_reg16: | |
23042 | case DW_OP_reg17: | |
23043 | case DW_OP_reg18: | |
23044 | case DW_OP_reg19: | |
23045 | case DW_OP_reg20: | |
23046 | case DW_OP_reg21: | |
23047 | case DW_OP_reg22: | |
23048 | case DW_OP_reg23: | |
23049 | case DW_OP_reg24: | |
23050 | case DW_OP_reg25: | |
23051 | case DW_OP_reg26: | |
23052 | case DW_OP_reg27: | |
23053 | case DW_OP_reg28: | |
23054 | case DW_OP_reg29: | |
23055 | case DW_OP_reg30: | |
23056 | case DW_OP_reg31: | |
23057 | stack[++stacki] = op - DW_OP_reg0; | |
23058 | if (i < size) | |
7d79de9a TT |
23059 | { |
23060 | if (computed == nullptr) | |
23061 | dwarf2_complex_location_expr_complaint (); | |
23062 | else | |
23063 | return 0; | |
23064 | } | |
21ae7a4d | 23065 | break; |
c906108c | 23066 | |
21ae7a4d JK |
23067 | case DW_OP_regx: |
23068 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23069 | i += bytes_read; | |
23070 | stack[++stacki] = unsnd; | |
23071 | if (i < size) | |
7d79de9a TT |
23072 | { |
23073 | if (computed == nullptr) | |
23074 | dwarf2_complex_location_expr_complaint (); | |
23075 | else | |
23076 | return 0; | |
23077 | } | |
21ae7a4d | 23078 | break; |
c906108c | 23079 | |
21ae7a4d | 23080 | case DW_OP_addr: |
c8a7a66f TT |
23081 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
23082 | &bytes_read); | |
21ae7a4d JK |
23083 | i += bytes_read; |
23084 | break; | |
d53d4ac5 | 23085 | |
21ae7a4d JK |
23086 | case DW_OP_const1u: |
23087 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23088 | i += 1; | |
23089 | break; | |
23090 | ||
23091 | case DW_OP_const1s: | |
23092 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23093 | i += 1; | |
23094 | break; | |
23095 | ||
23096 | case DW_OP_const2u: | |
23097 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23098 | i += 2; | |
23099 | break; | |
23100 | ||
23101 | case DW_OP_const2s: | |
23102 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23103 | i += 2; | |
23104 | break; | |
d53d4ac5 | 23105 | |
21ae7a4d JK |
23106 | case DW_OP_const4u: |
23107 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23108 | i += 4; | |
23109 | break; | |
23110 | ||
23111 | case DW_OP_const4s: | |
23112 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23113 | i += 4; | |
23114 | break; | |
23115 | ||
585861ea JK |
23116 | case DW_OP_const8u: |
23117 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23118 | i += 8; | |
23119 | break; | |
23120 | ||
21ae7a4d JK |
23121 | case DW_OP_constu: |
23122 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23123 | &bytes_read); | |
23124 | i += bytes_read; | |
23125 | break; | |
23126 | ||
23127 | case DW_OP_consts: | |
23128 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23129 | i += bytes_read; | |
23130 | break; | |
23131 | ||
23132 | case DW_OP_dup: | |
23133 | stack[stacki + 1] = stack[stacki]; | |
23134 | stacki++; | |
23135 | break; | |
23136 | ||
23137 | case DW_OP_plus: | |
23138 | stack[stacki - 1] += stack[stacki]; | |
23139 | stacki--; | |
23140 | break; | |
23141 | ||
23142 | case DW_OP_plus_uconst: | |
23143 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23144 | &bytes_read); | |
23145 | i += bytes_read; | |
23146 | break; | |
23147 | ||
23148 | case DW_OP_minus: | |
23149 | stack[stacki - 1] -= stack[stacki]; | |
23150 | stacki--; | |
23151 | break; | |
23152 | ||
23153 | case DW_OP_deref: | |
23154 | /* If we're not the last op, then we definitely can't encode | |
23155 | this using GDB's address_class enum. This is valid for partial | |
23156 | global symbols, although the variable's address will be bogus | |
23157 | in the psymtab. */ | |
23158 | if (i < size) | |
7d79de9a TT |
23159 | { |
23160 | if (computed == nullptr) | |
23161 | dwarf2_complex_location_expr_complaint (); | |
23162 | else | |
23163 | return 0; | |
23164 | } | |
21ae7a4d JK |
23165 | break; |
23166 | ||
23167 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23168 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23169 | /* The top of the stack has the offset from the beginning |
23170 | of the thread control block at which the variable is located. */ | |
23171 | /* Nothing should follow this operator, so the top of stack would | |
23172 | be returned. */ | |
23173 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23174 | address will be bogus in the psymtab. Make it always at least |
23175 | non-zero to not look as a variable garbage collected by linker | |
23176 | which have DW_OP_addr 0. */ | |
21ae7a4d | 23177 | if (i < size) |
7d79de9a TT |
23178 | { |
23179 | if (computed == nullptr) | |
23180 | dwarf2_complex_location_expr_complaint (); | |
23181 | else | |
23182 | return 0; | |
23183 | } | |
585861ea | 23184 | stack[stacki]++; |
21ae7a4d JK |
23185 | break; |
23186 | ||
23187 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
23188 | if (computed != nullptr) |
23189 | return 0; | |
21ae7a4d JK |
23190 | break; |
23191 | ||
336d760d | 23192 | case DW_OP_addrx: |
3019eac3 | 23193 | case DW_OP_GNU_addr_index: |
49f6c839 | 23194 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23195 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23196 | &bytes_read); | |
23197 | i += bytes_read; | |
23198 | break; | |
23199 | ||
21ae7a4d | 23200 | default: |
7d79de9a TT |
23201 | if (computed == nullptr) |
23202 | { | |
23203 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 23204 | |
7d79de9a TT |
23205 | if (name) |
23206 | complaint (_("unsupported stack op: '%s'"), | |
23207 | name); | |
23208 | else | |
23209 | complaint (_("unsupported stack op: '%02x'"), | |
23210 | op); | |
23211 | } | |
21ae7a4d JK |
23212 | |
23213 | return (stack[stacki]); | |
d53d4ac5 | 23214 | } |
3c6e0cb3 | 23215 | |
21ae7a4d JK |
23216 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23217 | outside of the allocated space. Also enforce minimum>0. */ | |
23218 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23219 | { | |
7d79de9a TT |
23220 | if (computed == nullptr) |
23221 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
23222 | return 0; |
23223 | } | |
23224 | ||
23225 | if (stacki <= 0) | |
23226 | { | |
7d79de9a TT |
23227 | if (computed == nullptr) |
23228 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
23229 | return 0; |
23230 | } | |
23231 | } | |
7d79de9a TT |
23232 | |
23233 | if (computed != nullptr) | |
23234 | *computed = true; | |
21ae7a4d | 23235 | return (stack[stacki]); |
c906108c SS |
23236 | } |
23237 | ||
23238 | /* memory allocation interface */ | |
23239 | ||
c906108c | 23240 | static struct dwarf_block * |
7b5a2f43 | 23241 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23242 | { |
8d749320 | 23243 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23244 | } |
23245 | ||
c906108c | 23246 | static struct die_info * |
b60c80d6 | 23247 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23248 | { |
23249 | struct die_info *die; | |
b60c80d6 DJ |
23250 | size_t size = sizeof (struct die_info); |
23251 | ||
23252 | if (num_attrs > 1) | |
23253 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23254 | |
b60c80d6 | 23255 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23256 | memset (die, 0, sizeof (struct die_info)); |
23257 | return (die); | |
23258 | } | |
2e276125 JB |
23259 | |
23260 | \f | |
a036ba48 | 23261 | |
c90ec28a | 23262 | /* Macro support. */ |
cf2c3c16 | 23263 | |
9eac9650 TT |
23264 | /* An overload of dwarf_decode_macros that finds the correct section |
23265 | and ensures it is read in before calling the other overload. */ | |
23266 | ||
23267 | static void | |
23268 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
23269 | int section_is_gnu) | |
23270 | { | |
5e22e966 | 23271 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
9eac9650 | 23272 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5a0e026f | 23273 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
23274 | unsigned int offset_size = cu->header.offset_size; |
23275 | struct dwarf2_section_info *section; | |
23276 | const char *section_name; | |
23277 | ||
23278 | if (cu->dwo_unit != nullptr) | |
23279 | { | |
23280 | if (section_is_gnu) | |
23281 | { | |
23282 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
23283 | section_name = ".debug_macro.dwo"; | |
23284 | } | |
23285 | else | |
23286 | { | |
23287 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
23288 | section_name = ".debug_macinfo.dwo"; | |
23289 | } | |
23290 | } | |
23291 | else | |
23292 | { | |
23293 | if (section_is_gnu) | |
23294 | { | |
5989a64e | 23295 | section = &dwarf2_per_objfile->per_bfd->macro; |
9eac9650 TT |
23296 | section_name = ".debug_macro"; |
23297 | } | |
23298 | else | |
23299 | { | |
5989a64e | 23300 | section = &dwarf2_per_objfile->per_bfd->macinfo; |
9eac9650 TT |
23301 | section_name = ".debug_macinfo"; |
23302 | } | |
23303 | } | |
23304 | ||
23305 | section->read (objfile); | |
23306 | if (section->buffer == nullptr) | |
23307 | { | |
23308 | complaint (_("missing %s section"), section_name); | |
23309 | return; | |
23310 | } | |
23311 | ||
23312 | buildsym_compunit *builder = cu->get_builder (); | |
23313 | ||
23314 | dwarf_decode_macros (dwarf2_per_objfile, builder, section, lh, | |
23315 | offset_size, offset, section_is_gnu); | |
23316 | } | |
23317 | ||
3019eac3 DE |
23318 | /* Return the .debug_loc section to use for CU. |
23319 | For DWO files use .debug_loc.dwo. */ | |
23320 | ||
23321 | static struct dwarf2_section_info * | |
23322 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
23323 | { | |
5e22e966 | 23324 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 23325 | |
3019eac3 | 23326 | if (cu->dwo_unit) |
43988095 JK |
23327 | { |
23328 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 23329 | |
43988095 JK |
23330 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
23331 | } | |
5989a64e SM |
23332 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->per_bfd->loclists |
23333 | : &dwarf2_per_objfile->per_bfd->loc); | |
3019eac3 DE |
23334 | } |
23335 | ||
8cf6f0b1 TT |
23336 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
23337 | ||
23338 | static void | |
23339 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
23340 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 23341 | const struct attribute *attr) |
8cf6f0b1 | 23342 | { |
5e22e966 | 23343 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 DE |
23344 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
23345 | ||
96b79293 | 23346 | section->read (dwarf2_per_objfile->objfile); |
8cf6f0b1 | 23347 | |
a50264ba | 23348 | baton->per_objfile = dwarf2_per_objfile; |
8cf6f0b1 TT |
23349 | baton->per_cu = cu->per_cu; |
23350 | gdb_assert (baton->per_cu); | |
23351 | /* We don't know how long the location list is, but make sure we | |
23352 | don't run off the edge of the section. */ | |
3019eac3 DE |
23353 | baton->size = section->size - DW_UNSND (attr); |
23354 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
23355 | if (cu->base_address.has_value ()) |
23356 | baton->base_address = *cu->base_address; | |
23357 | else | |
23358 | baton->base_address = 0; | |
f664829e | 23359 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
23360 | } |
23361 | ||
4c2df51b | 23362 | static void |
ff39bb5e | 23363 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 23364 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 23365 | { |
5e22e966 | 23366 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
bb5ed363 | 23367 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 23368 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 23369 | |
cd6c91b4 | 23370 | if (attr->form_is_section_offset () |
3019eac3 | 23371 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
23372 | the section. If so, fall through to the complaint in the |
23373 | other branch. */ | |
2c7d5afc | 23374 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 23375 | { |
0d53c4c4 | 23376 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 23377 | |
8d749320 | 23378 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 23379 | |
8cf6f0b1 | 23380 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 23381 | |
2b24b6e4 | 23382 | if (!cu->base_address.has_value ()) |
b98664d3 | 23383 | complaint (_("Location list used without " |
3e43a32a | 23384 | "specifying the CU base address.")); |
4c2df51b | 23385 | |
f1e6e072 TT |
23386 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23387 | ? dwarf2_loclist_block_index | |
23388 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
23389 | SYMBOL_LOCATION_BATON (sym) = baton; |
23390 | } | |
23391 | else | |
23392 | { | |
23393 | struct dwarf2_locexpr_baton *baton; | |
23394 | ||
8d749320 | 23395 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 23396 | baton->per_objfile = dwarf2_per_objfile; |
ae0d2f24 UW |
23397 | baton->per_cu = cu->per_cu; |
23398 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 23399 | |
4fc6c0d5 | 23400 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
23401 | { |
23402 | /* Note that we're just copying the block's data pointer | |
23403 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
23404 | info_buffer for SYM's objfile; right now we never release |
23405 | that buffer, but when we do clean up properly this may | |
23406 | need to change. */ | |
0d53c4c4 DJ |
23407 | baton->size = DW_BLOCK (attr)->size; |
23408 | baton->data = DW_BLOCK (attr)->data; | |
23409 | } | |
23410 | else | |
23411 | { | |
23412 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 23413 | sym->natural_name ()); |
0d53c4c4 | 23414 | baton->size = 0; |
0d53c4c4 | 23415 | } |
6e70227d | 23416 | |
f1e6e072 TT |
23417 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23418 | ? dwarf2_locexpr_block_index | |
23419 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
23420 | SYMBOL_LOCATION_BATON (sym) = baton; |
23421 | } | |
4c2df51b | 23422 | } |
6502dd73 | 23423 | |
2e6a9f79 | 23424 | /* See read.h. */ |
96408a79 | 23425 | |
2e6a9f79 SM |
23426 | const comp_unit_head * |
23427 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 23428 | { |
2e6a9f79 SM |
23429 | if (!m_header_read_in) |
23430 | { | |
23431 | const gdb_byte *info_ptr | |
23432 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 23433 | |
2e6a9f79 | 23434 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 23435 | |
2e6a9f79 SM |
23436 | read_comp_unit_head (&m_header, info_ptr, this->section, |
23437 | rcuh_kind::COMPILE); | |
23438 | } | |
96408a79 | 23439 | |
2e6a9f79 | 23440 | return &m_header; |
96408a79 SA |
23441 | } |
23442 | ||
09ba997f | 23443 | /* See read.h. */ |
ae0d2f24 | 23444 | |
98714339 | 23445 | int |
09ba997f | 23446 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 23447 | { |
2e6a9f79 | 23448 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
23449 | } |
23450 | ||
09ba997f | 23451 | /* See read.h. */ |
9eae7c52 TT |
23452 | |
23453 | int | |
09ba997f | 23454 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 23455 | { |
2e6a9f79 | 23456 | return this->get_header ()->offset_size; |
96408a79 SA |
23457 | } |
23458 | ||
09ba997f | 23459 | /* See read.h. */ |
96408a79 SA |
23460 | |
23461 | int | |
09ba997f | 23462 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 23463 | { |
2e6a9f79 | 23464 | const comp_unit_head *header = this->get_header (); |
96408a79 | 23465 | |
2e6a9f79 SM |
23466 | if (header->version == 2) |
23467 | return header->addr_size; | |
96408a79 | 23468 | else |
2e6a9f79 | 23469 | return header->offset_size; |
181cebd4 JK |
23470 | } |
23471 | ||
09ba997f | 23472 | /* See read.h. */ |
9aa1f1e3 | 23473 | |
09ba997f | 23474 | struct type * |
293e7e51 | 23475 | dwarf2_cu::addr_type () const |
9a49df9d | 23476 | { |
293e7e51 | 23477 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
23478 | struct type *void_type = objfile_type (objfile)->builtin_void; |
23479 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 23480 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
23481 | |
23482 | if (TYPE_LENGTH (addr_type) == addr_size) | |
23483 | return addr_type; | |
23484 | ||
09ba997f | 23485 | addr_type = addr_sized_int_type (TYPE_UNSIGNED (addr_type)); |
9a49df9d AB |
23486 | return addr_type; |
23487 | } | |
23488 | ||
22b6cd70 TT |
23489 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
23490 | the index of the result, and that searches a vector. It will | |
23491 | return a result even if the offset in question does not actually | |
23492 | occur in any CU. This is separate so that it can be unit | |
23493 | tested. */ | |
ae038cb0 | 23494 | |
22b6cd70 TT |
23495 | static int |
23496 | dwarf2_find_containing_comp_unit | |
23497 | (sect_offset sect_off, | |
23498 | unsigned int offset_in_dwz, | |
23499 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 23500 | { |
ae038cb0 DJ |
23501 | int low, high; |
23502 | ||
ae038cb0 | 23503 | low = 0; |
22b6cd70 | 23504 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
23505 | while (high > low) |
23506 | { | |
36586728 | 23507 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 23508 | int mid = low + (high - low) / 2; |
9a619af0 | 23509 | |
22b6cd70 | 23510 | mid_cu = all_comp_units[mid]; |
36586728 | 23511 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 23512 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 23513 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
23514 | high = mid; |
23515 | else | |
23516 | low = mid + 1; | |
23517 | } | |
23518 | gdb_assert (low == high); | |
22b6cd70 TT |
23519 | return low; |
23520 | } | |
23521 | ||
23522 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
23523 | the DIE at OFFSET. Raises an error on failure. */ | |
23524 | ||
23525 | static struct dwarf2_per_cu_data * | |
23526 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
23527 | unsigned int offset_in_dwz, | |
23528 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
23529 | { | |
23530 | int low | |
23531 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
5989a64e | 23532 | dwarf2_per_objfile->per_bfd->all_comp_units); |
22b6cd70 | 23533 | struct dwarf2_per_cu_data *this_cu |
5989a64e | 23534 | = dwarf2_per_objfile->per_bfd->all_comp_units[low]; |
22b6cd70 | 23535 | |
45b8ae0c | 23536 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 23537 | { |
36586728 | 23538 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 23539 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
23540 | "offset %s [in module %s]"), |
23541 | sect_offset_str (sect_off), | |
ed2dc618 | 23542 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 23543 | |
5989a64e | 23544 | gdb_assert (dwarf2_per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 23545 | <= sect_off); |
5989a64e | 23546 | return dwarf2_per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
23547 | } |
23548 | else | |
23549 | { | |
5989a64e | 23550 | if (low == dwarf2_per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 23551 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 23552 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 23553 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
23554 | return this_cu; |
23555 | } | |
23556 | } | |
23557 | ||
22b6cd70 TT |
23558 | #if GDB_SELF_TEST |
23559 | ||
23560 | namespace selftests { | |
23561 | namespace find_containing_comp_unit { | |
23562 | ||
23563 | static void | |
23564 | run_test () | |
23565 | { | |
23566 | struct dwarf2_per_cu_data one {}; | |
23567 | struct dwarf2_per_cu_data two {}; | |
23568 | struct dwarf2_per_cu_data three {}; | |
23569 | struct dwarf2_per_cu_data four {}; | |
23570 | ||
23571 | one.length = 5; | |
23572 | two.sect_off = sect_offset (one.length); | |
23573 | two.length = 7; | |
23574 | ||
23575 | three.length = 5; | |
23576 | three.is_dwz = 1; | |
23577 | four.sect_off = sect_offset (three.length); | |
23578 | four.length = 7; | |
23579 | four.is_dwz = 1; | |
23580 | ||
23581 | std::vector<dwarf2_per_cu_data *> units; | |
23582 | units.push_back (&one); | |
23583 | units.push_back (&two); | |
23584 | units.push_back (&three); | |
23585 | units.push_back (&four); | |
23586 | ||
23587 | int result; | |
23588 | ||
23589 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
23590 | SELF_CHECK (units[result] == &one); | |
23591 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
23592 | SELF_CHECK (units[result] == &one); | |
23593 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
23594 | SELF_CHECK (units[result] == &two); | |
23595 | ||
23596 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
23597 | SELF_CHECK (units[result] == &three); | |
23598 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
23599 | SELF_CHECK (units[result] == &three); | |
23600 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
23601 | SELF_CHECK (units[result] == &four); | |
23602 | } | |
23603 | ||
23604 | } | |
23605 | } | |
23606 | ||
23607 | #endif /* GDB_SELF_TEST */ | |
23608 | ||
9e021579 | 23609 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 23610 | |
9e021579 SM |
23611 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
23612 | dwarf2_per_objfile *per_objfile) | |
23613 | : per_cu (per_cu), | |
23614 | per_objfile (per_objfile), | |
9068261f AB |
23615 | mark (false), |
23616 | has_loclist (false), | |
23617 | checked_producer (false), | |
23618 | producer_is_gxx_lt_4_6 (false), | |
23619 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 23620 | producer_is_icc (false), |
9068261f | 23621 | producer_is_icc_lt_14 (false), |
c258c396 | 23622 | producer_is_codewarrior (false), |
9068261f | 23623 | processing_has_namespace_info (false) |
93311388 | 23624 | { |
9816fde3 JK |
23625 | } |
23626 | ||
23627 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
23628 | ||
23629 | static void | |
95554aad TT |
23630 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
23631 | enum language pretend_language) | |
9816fde3 JK |
23632 | { |
23633 | struct attribute *attr; | |
23634 | ||
23635 | /* Set the language we're debugging. */ | |
23636 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 23637 | if (attr != nullptr) |
9816fde3 JK |
23638 | set_cu_language (DW_UNSND (attr), cu); |
23639 | else | |
9cded63f | 23640 | { |
95554aad | 23641 | cu->language = pretend_language; |
9cded63f TT |
23642 | cu->language_defn = language_def (cu->language); |
23643 | } | |
dee91e82 | 23644 | |
7d45c7c3 | 23645 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
23646 | } |
23647 | ||
7188ed02 | 23648 | /* See read.h. */ |
ae038cb0 | 23649 | |
7188ed02 SM |
23650 | dwarf2_cu * |
23651 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 23652 | { |
7188ed02 SM |
23653 | auto it = m_dwarf2_cus.find (per_cu); |
23654 | if (it == m_dwarf2_cus.end ()) | |
23655 | return nullptr; | |
ae038cb0 | 23656 | |
7188ed02 SM |
23657 | return it->second; |
23658 | } | |
23659 | ||
23660 | /* See read.h. */ | |
23661 | ||
23662 | void | |
23663 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
23664 | { | |
23665 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
23666 | ||
23667 | m_dwarf2_cus[per_cu] = cu; | |
23668 | } | |
23669 | ||
23670 | /* See read.h. */ | |
23671 | ||
23672 | void | |
23673 | dwarf2_per_objfile::age_comp_units () | |
23674 | { | |
23675 | /* Start by clearing all marks. */ | |
23676 | for (auto pair : m_dwarf2_cus) | |
23677 | pair.second->mark = false; | |
23678 | ||
23679 | /* Traverse all CUs, mark them and their dependencies if used recently | |
23680 | enough. */ | |
23681 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 23682 | { |
7188ed02 SM |
23683 | dwarf2_cu *cu = pair.second; |
23684 | ||
23685 | cu->last_used++; | |
23686 | if (cu->last_used <= dwarf_max_cache_age) | |
23687 | dwarf2_mark (cu); | |
ae038cb0 DJ |
23688 | } |
23689 | ||
7188ed02 SM |
23690 | /* Delete all CUs still not marked. */ |
23691 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 23692 | { |
7188ed02 | 23693 | dwarf2_cu *cu = it->second; |
ae038cb0 | 23694 | |
7188ed02 | 23695 | if (!cu->mark) |
ae038cb0 | 23696 | { |
7188ed02 SM |
23697 | delete cu; |
23698 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
23699 | } |
23700 | else | |
7188ed02 | 23701 | it++; |
ae038cb0 DJ |
23702 | } |
23703 | } | |
23704 | ||
7188ed02 | 23705 | /* See read.h. */ |
ae038cb0 | 23706 | |
7188ed02 SM |
23707 | void |
23708 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 23709 | { |
7188ed02 SM |
23710 | auto it = m_dwarf2_cus.find (per_cu); |
23711 | if (it == m_dwarf2_cus.end ()) | |
23712 | return; | |
ae038cb0 | 23713 | |
7188ed02 | 23714 | delete it->second; |
ae038cb0 | 23715 | |
7188ed02 SM |
23716 | m_dwarf2_cus.erase (it); |
23717 | } | |
ae038cb0 | 23718 | |
7188ed02 SM |
23719 | dwarf2_per_objfile::~dwarf2_per_objfile () |
23720 | { | |
23721 | remove_all_cus (); | |
ae038cb0 DJ |
23722 | } |
23723 | ||
dee91e82 DE |
23724 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
23725 | We store these in a hash table separate from the DIEs, and preserve them | |
23726 | when the DIEs are flushed out of cache. | |
23727 | ||
23728 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 23729 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
23730 | or the type may come from a DWO file. Furthermore, while it's more logical |
23731 | to use per_cu->section+offset, with Fission the section with the data is in | |
23732 | the DWO file but we don't know that section at the point we need it. | |
23733 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
23734 | because we can enter the lookup routine, get_die_type_at_offset, from | |
23735 | outside this file, and thus won't necessarily have PER_CU->cu. | |
23736 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 23737 | |
dee91e82 | 23738 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 23739 | { |
dee91e82 | 23740 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 23741 | sect_offset sect_off; |
1c379e20 DJ |
23742 | struct type *type; |
23743 | }; | |
23744 | ||
dee91e82 | 23745 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23746 | |
23747 | static hashval_t | |
dee91e82 | 23748 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 23749 | { |
9a3c8263 SM |
23750 | const struct dwarf2_per_cu_offset_and_type *ofs |
23751 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 23752 | |
9c541725 | 23753 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
23754 | } |
23755 | ||
dee91e82 | 23756 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23757 | |
23758 | static int | |
dee91e82 | 23759 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 23760 | { |
9a3c8263 SM |
23761 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
23762 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
23763 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
23764 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 23765 | |
dee91e82 | 23766 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 23767 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
23768 | } |
23769 | ||
23770 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
23771 | table if necessary. For convenience, return TYPE. |
23772 | ||
23773 | The DIEs reading must have careful ordering to: | |
85102364 | 23774 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
23775 | reading current DIE. |
23776 | * Not trying to dereference contents of still incompletely read in types | |
23777 | while reading in other DIEs. | |
23778 | * Enable referencing still incompletely read in types just by a pointer to | |
23779 | the type without accessing its fields. | |
23780 | ||
23781 | Therefore caller should follow these rules: | |
23782 | * Try to fetch any prerequisite types we may need to build this DIE type | |
23783 | before building the type and calling set_die_type. | |
e71ec853 | 23784 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
23785 | possible before fetching more types to complete the current type. |
23786 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 23787 | |
f792889a | 23788 | static struct type * |
1c379e20 DJ |
23789 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
23790 | { | |
5e22e966 | 23791 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
dee91e82 | 23792 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 23793 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
23794 | struct attribute *attr; |
23795 | struct dynamic_prop prop; | |
1c379e20 | 23796 | |
b4ba55a1 JB |
23797 | /* For Ada types, make sure that the gnat-specific data is always |
23798 | initialized (if not already set). There are a few types where | |
23799 | we should not be doing so, because the type-specific area is | |
23800 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
23801 | where the type-specific area is used to store the floatformat). | |
23802 | But this is not a problem, because the gnat-specific information | |
23803 | is actually not needed for these types. */ | |
23804 | if (need_gnat_info (cu) | |
78134374 SM |
23805 | && type->code () != TYPE_CODE_FUNC |
23806 | && type->code () != TYPE_CODE_FLT | |
23807 | && type->code () != TYPE_CODE_METHODPTR | |
23808 | && type->code () != TYPE_CODE_MEMBERPTR | |
23809 | && type->code () != TYPE_CODE_METHOD | |
b4ba55a1 JB |
23810 | && !HAVE_GNAT_AUX_INFO (type)) |
23811 | INIT_GNAT_SPECIFIC (type); | |
23812 | ||
3f2f83dd KB |
23813 | /* Read DW_AT_allocated and set in type. */ |
23814 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 23815 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23816 | { |
293e7e51 | 23817 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 23818 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23819 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd KB |
23820 | } |
23821 | else if (attr != NULL) | |
23822 | { | |
b98664d3 | 23823 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 23824 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23825 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23826 | } |
23827 | ||
23828 | /* Read DW_AT_associated and set in type. */ | |
23829 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 23830 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23831 | { |
293e7e51 | 23832 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 23833 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23834 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd KB |
23835 | } |
23836 | else if (attr != NULL) | |
23837 | { | |
b98664d3 | 23838 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 23839 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23840 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23841 | } |
23842 | ||
3cdcd0ce JB |
23843 | /* Read DW_AT_data_location and set in type. */ |
23844 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
293e7e51 | 23845 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 23846 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); |
3cdcd0ce | 23847 | |
ae090bdb SM |
23848 | if (dwarf2_per_objfile->die_type_hash == NULL) |
23849 | dwarf2_per_objfile->die_type_hash | |
0335378b TT |
23850 | = htab_up (htab_create_alloc (127, |
23851 | per_cu_offset_and_type_hash, | |
23852 | per_cu_offset_and_type_eq, | |
23853 | NULL, xcalloc, xfree)); | |
1c379e20 | 23854 | |
dee91e82 | 23855 | ofs.per_cu = cu->per_cu; |
9c541725 | 23856 | ofs.sect_off = die->sect_off; |
1c379e20 | 23857 | ofs.type = type; |
dee91e82 | 23858 | slot = (struct dwarf2_per_cu_offset_and_type **) |
ae090bdb | 23859 | htab_find_slot (dwarf2_per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 23860 | if (*slot) |
b98664d3 | 23861 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 23862 | sect_offset_str (die->sect_off)); |
8d749320 SM |
23863 | *slot = XOBNEW (&objfile->objfile_obstack, |
23864 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 23865 | **slot = ofs; |
f792889a | 23866 | return type; |
1c379e20 DJ |
23867 | } |
23868 | ||
9c541725 | 23869 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 23870 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
23871 | |
23872 | static struct type * | |
9c541725 | 23873 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 SM |
23874 | dwarf2_per_cu_data *per_cu, |
23875 | dwarf2_per_objfile *dwarf2_per_objfile) | |
1c379e20 | 23876 | { |
dee91e82 | 23877 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 23878 | |
ae090bdb | 23879 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 23880 | return NULL; |
1c379e20 | 23881 | |
dee91e82 | 23882 | ofs.per_cu = per_cu; |
9c541725 | 23883 | ofs.sect_off = sect_off; |
9a3c8263 | 23884 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
ae090bdb | 23885 | htab_find (dwarf2_per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
23886 | if (slot) |
23887 | return slot->type; | |
23888 | else | |
23889 | return NULL; | |
23890 | } | |
23891 | ||
02142a6c | 23892 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
23893 | or return NULL if DIE does not have a saved type. */ |
23894 | ||
23895 | static struct type * | |
23896 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
23897 | { | |
aa66c379 | 23898 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
23899 | } |
23900 | ||
10b3939b DJ |
23901 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
23902 | ||
23903 | static void | |
23904 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
23905 | struct dwarf2_per_cu_data *ref_per_cu) | |
23906 | { | |
23907 | void **slot; | |
23908 | ||
23909 | if (cu->dependencies == NULL) | |
23910 | cu->dependencies | |
23911 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
23912 | NULL, &cu->comp_unit_obstack, | |
23913 | hashtab_obstack_allocate, | |
23914 | dummy_obstack_deallocate); | |
23915 | ||
23916 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
23917 | if (*slot == NULL) | |
23918 | *slot = ref_per_cu; | |
23919 | } | |
1c379e20 | 23920 | |
f504f079 DE |
23921 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
23922 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
23923 | cache that we must keep because we are keeping CU. |
23924 | ||
23925 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 23926 | |
10b3939b DJ |
23927 | static int |
23928 | dwarf2_mark_helper (void **slot, void *data) | |
23929 | { | |
7188ed02 SM |
23930 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
23931 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
23932 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
23933 | |
23934 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
23935 | reading of the chain. As such dependencies remain valid it is not much | |
23936 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 23937 | if (cu == nullptr) |
d07ed419 JK |
23938 | return 1; |
23939 | ||
7188ed02 | 23940 | if (cu->mark) |
10b3939b | 23941 | return 1; |
10b3939b | 23942 | |
7188ed02 SM |
23943 | cu->mark = true; |
23944 | ||
23945 | if (cu->dependencies != nullptr) | |
23946 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
23947 | |
23948 | return 1; | |
23949 | } | |
23950 | ||
f504f079 DE |
23951 | /* Set the mark field in CU and in every other compilation unit in the |
23952 | cache that we must keep because we are keeping CU. */ | |
23953 | ||
ae038cb0 DJ |
23954 | static void |
23955 | dwarf2_mark (struct dwarf2_cu *cu) | |
23956 | { | |
23957 | if (cu->mark) | |
23958 | return; | |
7188ed02 | 23959 | |
9068261f | 23960 | cu->mark = true; |
ae038cb0 | 23961 | |
7188ed02 SM |
23962 | if (cu->dependencies != nullptr) |
23963 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
23964 | } |
23965 | ||
72bf9492 DJ |
23966 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
23967 | is its offset in .debug_info for this objfile. */ | |
23968 | ||
23969 | static hashval_t | |
23970 | partial_die_hash (const void *item) | |
23971 | { | |
9a3c8263 SM |
23972 | const struct partial_die_info *part_die |
23973 | = (const struct partial_die_info *) item; | |
9a619af0 | 23974 | |
9c541725 | 23975 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
23976 | } |
23977 | ||
23978 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23979 | are equal if they have the same offset. */ | |
23980 | ||
23981 | static int | |
23982 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23983 | { | |
9a3c8263 SM |
23984 | const struct partial_die_info *part_die_lhs |
23985 | = (const struct partial_die_info *) item_lhs; | |
23986 | const struct partial_die_info *part_die_rhs | |
23987 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 23988 | |
9c541725 | 23989 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
23990 | } |
23991 | ||
3c3bb058 AB |
23992 | struct cmd_list_element *set_dwarf_cmdlist; |
23993 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 23994 | |
9291a0cd | 23995 | static void |
cd4fb1b2 SM |
23996 | show_check_physname (struct ui_file *file, int from_tty, |
23997 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 23998 | { |
cd4fb1b2 SM |
23999 | fprintf_filtered (file, |
24000 | _("Whether to check \"physname\" is %s.\n"), | |
24001 | value); | |
9291a0cd TT |
24002 | } |
24003 | ||
6c265988 | 24004 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 24005 | void |
6c265988 | 24006 | _initialize_dwarf2_read () |
9291a0cd | 24007 | { |
0743fc83 | 24008 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 24009 | Set DWARF specific variables.\n\ |
590042fc | 24010 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
24011 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
24012 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 24013 | |
0743fc83 | 24014 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
24015 | Show DWARF specific variables.\n\ |
24016 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
24017 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
24018 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 24019 | |
cd4fb1b2 SM |
24020 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
24021 | &dwarf_max_cache_age, _("\ | |
24022 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
24023 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
24024 | A higher limit means that cached compilation units will be stored\n\ | |
24025 | in memory longer, and more total memory will be used. Zero disables\n\ | |
24026 | caching, which can slow down startup."), | |
24027 | NULL, | |
24028 | show_dwarf_max_cache_age, | |
24029 | &set_dwarf_cmdlist, | |
24030 | &show_dwarf_cmdlist); | |
156942c7 | 24031 | |
cd4fb1b2 SM |
24032 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
24033 | Set debugging of the DWARF reader."), _("\ | |
24034 | Show debugging of the DWARF reader."), _("\ | |
24035 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
24036 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
24037 | information. A value greater than 1 provides more verbose information."), | |
24038 | NULL, | |
24039 | NULL, | |
24040 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24041 | |
cd4fb1b2 SM |
24042 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
24043 | Set debugging of the DWARF DIE reader."), _("\ | |
24044 | Show debugging of the DWARF DIE reader."), _("\ | |
24045 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
24046 | The value is the maximum depth to print."), | |
24047 | NULL, | |
24048 | NULL, | |
24049 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24050 | |
cd4fb1b2 SM |
24051 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
24052 | Set debugging of the dwarf line reader."), _("\ | |
24053 | Show debugging of the dwarf line reader."), _("\ | |
24054 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
24055 | A value of 1 (one) provides basic information.\n\ | |
24056 | A value greater than 1 provides more verbose information."), | |
24057 | NULL, | |
24058 | NULL, | |
24059 | &setdebuglist, &showdebuglist); | |
437afbb8 | 24060 | |
cd4fb1b2 SM |
24061 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
24062 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
24063 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
24064 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
24065 | the demangler."), | |
24066 | NULL, show_check_physname, | |
24067 | &setdebuglist, &showdebuglist); | |
900e11f9 | 24068 | |
e615022a DE |
24069 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
24070 | no_class, &use_deprecated_index_sections, _("\ | |
24071 | Set whether to use deprecated gdb_index sections."), _("\ | |
24072 | Show whether to use deprecated gdb_index sections."), _("\ | |
24073 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
24074 | Normally they are ignored either because of a missing feature or\n\ | |
24075 | performance issue.\n\ | |
24076 | Warning: This option must be enabled before gdb reads the file."), | |
24077 | NULL, | |
24078 | NULL, | |
24079 | &setlist, &showlist); | |
24080 | ||
f1e6e072 TT |
24081 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
24082 | &dwarf2_locexpr_funcs); | |
24083 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24084 | &dwarf2_loclist_funcs); | |
24085 | ||
24086 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24087 | &dwarf2_block_frame_base_locexpr_funcs); | |
24088 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24089 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
24090 | |
24091 | #if GDB_SELF_TEST | |
24092 | selftests::register_test ("dw2_expand_symtabs_matching", | |
24093 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
24094 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
24095 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 24096 | #endif |
6502dd73 | 24097 | } |