Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
e2882c85 | 3 | Copyright (C) 1994-2018 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" |
cd4fb1b2 SM |
32 | #include "dwarf2read.h" |
33 | #include "dwarf-index-common.h" | |
c906108c | 34 | #include "bfd.h" |
80626a55 | 35 | #include "elf-bfd.h" |
c906108c SS |
36 | #include "symtab.h" |
37 | #include "gdbtypes.h" | |
c906108c | 38 | #include "objfiles.h" |
fa8f86ff | 39 | #include "dwarf2.h" |
c906108c SS |
40 | #include "buildsym.h" |
41 | #include "demangle.h" | |
50f182aa | 42 | #include "gdb-demangle.h" |
c906108c | 43 | #include "expression.h" |
d5166ae1 | 44 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 45 | #include "macrotab.h" |
c906108c SS |
46 | #include "language.h" |
47 | #include "complaints.h" | |
357e46e7 | 48 | #include "bcache.h" |
4c2df51b DJ |
49 | #include "dwarf2expr.h" |
50 | #include "dwarf2loc.h" | |
9219021c | 51 | #include "cp-support.h" |
72bf9492 | 52 | #include "hashtab.h" |
ae038cb0 DJ |
53 | #include "command.h" |
54 | #include "gdbcmd.h" | |
edb3359d | 55 | #include "block.h" |
ff013f42 | 56 | #include "addrmap.h" |
94af9270 | 57 | #include "typeprint.h" |
ccefe4c4 | 58 | #include "psympriv.h" |
53ce3c39 | 59 | #include <sys/stat.h> |
96d19272 | 60 | #include "completer.h" |
34eaf542 | 61 | #include "vec.h" |
98bfdba5 | 62 | #include "c-lang.h" |
a766d390 | 63 | #include "go-lang.h" |
98bfdba5 | 64 | #include "valprint.h" |
3019eac3 | 65 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 66 | #include "gdb/gdb-index.h" |
60d5a603 | 67 | #include <ctype.h> |
cbb099e8 | 68 | #include "gdb_bfd.h" |
4357ac6c | 69 | #include "f-lang.h" |
05cba821 | 70 | #include "source.h" |
614c279d | 71 | #include "filestuff.h" |
dc294be5 | 72 | #include "build-id.h" |
22cee43f | 73 | #include "namespace.h" |
bef155c3 | 74 | #include "common/gdb_unlinker.h" |
14bc53a8 | 75 | #include "common/function-view.h" |
ecfb656c PA |
76 | #include "common/gdb_optional.h" |
77 | #include "common/underlying.h" | |
d5722aa2 | 78 | #include "common/byte-vector.h" |
927aa2e7 | 79 | #include "common/hash_enum.h" |
bbf2f4df | 80 | #include "filename-seen-cache.h" |
b32b108a | 81 | #include "producer.h" |
c906108c | 82 | #include <fcntl.h> |
c906108c | 83 | #include <sys/types.h> |
325fac50 | 84 | #include <algorithm> |
bc8f2430 JK |
85 | #include <unordered_set> |
86 | #include <unordered_map> | |
c62446b1 | 87 | #include "selftest.h" |
437afbb8 JK |
88 | #include <cmath> |
89 | #include <set> | |
90 | #include <forward_list> | |
c9317f21 | 91 | #include "rust-lang.h" |
b4987c95 | 92 | #include "common/pathstuff.h" |
437afbb8 | 93 | |
73be47f5 DE |
94 | /* When == 1, print basic high level tracing messages. |
95 | When > 1, be more verbose. | |
b4f54984 DE |
96 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
97 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 98 | |
d97bc12b | 99 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 100 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 101 | |
27e0867f DE |
102 | /* When non-zero, dump line number entries as they are read in. */ |
103 | static unsigned int dwarf_line_debug = 0; | |
104 | ||
900e11f9 JK |
105 | /* When non-zero, cross-check physname against demangler. */ |
106 | static int check_physname = 0; | |
107 | ||
481860b3 | 108 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 109 | static int use_deprecated_index_sections = 0; |
481860b3 | 110 | |
6502dd73 DJ |
111 | static const struct objfile_data *dwarf2_objfile_data_key; |
112 | ||
f1e6e072 TT |
113 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
114 | ||
115 | static int dwarf2_locexpr_index; | |
116 | static int dwarf2_loclist_index; | |
117 | static int dwarf2_locexpr_block_index; | |
118 | static int dwarf2_loclist_block_index; | |
119 | ||
3f563c84 PA |
120 | /* An index into a (C++) symbol name component in a symbol name as |
121 | recorded in the mapped_index's symbol table. For each C++ symbol | |
122 | in the symbol table, we record one entry for the start of each | |
123 | component in the symbol in a table of name components, and then | |
124 | sort the table, in order to be able to binary search symbol names, | |
125 | ignoring leading namespaces, both completion and regular look up. | |
126 | For example, for symbol "A::B::C", we'll have an entry that points | |
127 | to "A::B::C", another that points to "B::C", and another for "C". | |
128 | Note that function symbols in GDB index have no parameter | |
129 | information, just the function/method names. You can convert a | |
130 | name_component to a "const char *" using the | |
131 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
132 | ||
133 | struct name_component | |
134 | { | |
135 | /* Offset in the symbol name where the component starts. Stored as | |
136 | a (32-bit) offset instead of a pointer to save memory and improve | |
137 | locality on 64-bit architectures. */ | |
138 | offset_type name_offset; | |
139 | ||
140 | /* The symbol's index in the symbol and constant pool tables of a | |
141 | mapped_index. */ | |
142 | offset_type idx; | |
143 | }; | |
144 | ||
44ed8f3e PA |
145 | /* Base class containing bits shared by both .gdb_index and |
146 | .debug_name indexes. */ | |
147 | ||
148 | struct mapped_index_base | |
149 | { | |
150 | /* The name_component table (a sorted vector). See name_component's | |
151 | description above. */ | |
152 | std::vector<name_component> name_components; | |
153 | ||
154 | /* How NAME_COMPONENTS is sorted. */ | |
155 | enum case_sensitivity name_components_casing; | |
156 | ||
157 | /* Return the number of names in the symbol table. */ | |
158 | virtual size_t symbol_name_count () const = 0; | |
159 | ||
160 | /* Get the name of the symbol at IDX in the symbol table. */ | |
161 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
162 | ||
163 | /* Return whether the name at IDX in the symbol table should be | |
164 | ignored. */ | |
165 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
166 | { | |
167 | return false; | |
168 | } | |
169 | ||
170 | /* Build the symbol name component sorted vector, if we haven't | |
171 | yet. */ | |
172 | void build_name_components (); | |
173 | ||
174 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
175 | possible matches for LN_NO_PARAMS in the name component | |
176 | vector. */ | |
177 | std::pair<std::vector<name_component>::const_iterator, | |
178 | std::vector<name_component>::const_iterator> | |
179 | find_name_components_bounds (const lookup_name_info &ln_no_params) const; | |
180 | ||
181 | /* Prevent deleting/destroying via a base class pointer. */ | |
182 | protected: | |
183 | ~mapped_index_base() = default; | |
184 | }; | |
185 | ||
9291a0cd TT |
186 | /* A description of the mapped index. The file format is described in |
187 | a comment by the code that writes the index. */ | |
fc898b42 | 188 | struct mapped_index final : public mapped_index_base |
9291a0cd | 189 | { |
f00a2de2 PA |
190 | /* A slot/bucket in the symbol table hash. */ |
191 | struct symbol_table_slot | |
192 | { | |
193 | const offset_type name; | |
194 | const offset_type vec; | |
195 | }; | |
196 | ||
559a7a62 JK |
197 | /* Index data format version. */ |
198 | int version; | |
199 | ||
9291a0cd TT |
200 | /* The total length of the buffer. */ |
201 | off_t total_size; | |
b11b1f88 | 202 | |
f00a2de2 PA |
203 | /* The address table data. */ |
204 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 205 | |
3876f04e | 206 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 207 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 208 | |
9291a0cd TT |
209 | /* A pointer to the constant pool. */ |
210 | const char *constant_pool; | |
3f563c84 | 211 | |
44ed8f3e PA |
212 | bool symbol_name_slot_invalid (offset_type idx) const override |
213 | { | |
214 | const auto &bucket = this->symbol_table[idx]; | |
215 | return bucket.name == 0 && bucket.vec; | |
216 | } | |
5c58de74 | 217 | |
3f563c84 PA |
218 | /* Convenience method to get at the name of the symbol at IDX in the |
219 | symbol table. */ | |
44ed8f3e | 220 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 221 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 222 | |
44ed8f3e PA |
223 | size_t symbol_name_count () const override |
224 | { return this->symbol_table.size (); } | |
9291a0cd TT |
225 | }; |
226 | ||
927aa2e7 JK |
227 | /* A description of the mapped .debug_names. |
228 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 229 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 230 | { |
ed2dc618 SM |
231 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
232 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
233 | {} | |
234 | ||
235 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
236 | bfd_endian dwarf5_byte_order; |
237 | bool dwarf5_is_dwarf64; | |
238 | bool augmentation_is_gdb; | |
239 | uint8_t offset_size; | |
240 | uint32_t cu_count = 0; | |
241 | uint32_t tu_count, bucket_count, name_count; | |
242 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
243 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
244 | const gdb_byte *name_table_string_offs_reordered; | |
245 | const gdb_byte *name_table_entry_offs_reordered; | |
246 | const gdb_byte *entry_pool; | |
247 | ||
248 | struct index_val | |
249 | { | |
250 | ULONGEST dwarf_tag; | |
251 | struct attr | |
252 | { | |
253 | /* Attribute name DW_IDX_*. */ | |
254 | ULONGEST dw_idx; | |
255 | ||
256 | /* Attribute form DW_FORM_*. */ | |
257 | ULONGEST form; | |
258 | ||
259 | /* Value if FORM is DW_FORM_implicit_const. */ | |
260 | LONGEST implicit_const; | |
261 | }; | |
262 | std::vector<attr> attr_vec; | |
263 | }; | |
264 | ||
265 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
266 | ||
267 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
268 | |
269 | /* Implementation of the mapped_index_base virtual interface, for | |
270 | the name_components cache. */ | |
271 | ||
272 | const char *symbol_name_at (offset_type idx) const override | |
273 | { return namei_to_name (idx); } | |
274 | ||
275 | size_t symbol_name_count () const override | |
276 | { return this->name_count; } | |
927aa2e7 JK |
277 | }; |
278 | ||
cd4fb1b2 | 279 | /* See dwarf2read.h. */ |
ed2dc618 | 280 | |
cd4fb1b2 | 281 | dwarf2_per_objfile * |
ed2dc618 SM |
282 | get_dwarf2_per_objfile (struct objfile *objfile) |
283 | { | |
284 | return ((struct dwarf2_per_objfile *) | |
285 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
286 | } | |
287 | ||
288 | /* Set the dwarf2_per_objfile associated to OBJFILE. */ | |
289 | ||
290 | void | |
291 | set_dwarf2_per_objfile (struct objfile *objfile, | |
292 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
293 | { | |
294 | gdb_assert (get_dwarf2_per_objfile (objfile) == NULL); | |
295 | set_objfile_data (objfile, dwarf2_objfile_data_key, dwarf2_per_objfile); | |
296 | } | |
c906108c | 297 | |
251d32d9 | 298 | /* Default names of the debugging sections. */ |
c906108c | 299 | |
233a11ab CS |
300 | /* Note that if the debugging section has been compressed, it might |
301 | have a name like .zdebug_info. */ | |
302 | ||
9cdd5dbd DE |
303 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
304 | { | |
251d32d9 TG |
305 | { ".debug_info", ".zdebug_info" }, |
306 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
307 | { ".debug_line", ".zdebug_line" }, | |
308 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 309 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 310 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 311 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 312 | { ".debug_str", ".zdebug_str" }, |
43988095 | 313 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 314 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 315 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 316 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 317 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
318 | { ".debug_frame", ".zdebug_frame" }, |
319 | { ".eh_frame", NULL }, | |
24d3216f | 320 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
321 | { ".debug_names", ".zdebug_names" }, |
322 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 323 | 23 |
251d32d9 | 324 | }; |
c906108c | 325 | |
80626a55 | 326 | /* List of DWO/DWP sections. */ |
3019eac3 | 327 | |
80626a55 | 328 | static const struct dwop_section_names |
3019eac3 DE |
329 | { |
330 | struct dwarf2_section_names abbrev_dwo; | |
331 | struct dwarf2_section_names info_dwo; | |
332 | struct dwarf2_section_names line_dwo; | |
333 | struct dwarf2_section_names loc_dwo; | |
43988095 | 334 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
335 | struct dwarf2_section_names macinfo_dwo; |
336 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
337 | struct dwarf2_section_names str_dwo; |
338 | struct dwarf2_section_names str_offsets_dwo; | |
339 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
340 | struct dwarf2_section_names cu_index; |
341 | struct dwarf2_section_names tu_index; | |
3019eac3 | 342 | } |
80626a55 | 343 | dwop_section_names = |
3019eac3 DE |
344 | { |
345 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
346 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
347 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
348 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 349 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
350 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
351 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
352 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
353 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
354 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
355 | { ".debug_cu_index", ".zdebug_cu_index" }, |
356 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
357 | }; |
358 | ||
c906108c SS |
359 | /* local data types */ |
360 | ||
107d2387 AC |
361 | /* The data in a compilation unit header, after target2host |
362 | translation, looks like this. */ | |
c906108c | 363 | struct comp_unit_head |
a738430d | 364 | { |
c764a876 | 365 | unsigned int length; |
a738430d | 366 | short version; |
a738430d MK |
367 | unsigned char addr_size; |
368 | unsigned char signed_addr_p; | |
9c541725 | 369 | sect_offset abbrev_sect_off; |
57349743 | 370 | |
a738430d MK |
371 | /* Size of file offsets; either 4 or 8. */ |
372 | unsigned int offset_size; | |
57349743 | 373 | |
a738430d MK |
374 | /* Size of the length field; either 4 or 12. */ |
375 | unsigned int initial_length_size; | |
57349743 | 376 | |
43988095 JK |
377 | enum dwarf_unit_type unit_type; |
378 | ||
a738430d MK |
379 | /* Offset to the first byte of this compilation unit header in the |
380 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 381 | sect_offset sect_off; |
57349743 | 382 | |
d00adf39 DE |
383 | /* Offset to first die in this cu from the start of the cu. |
384 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 385 | cu_offset first_die_cu_offset; |
43988095 JK |
386 | |
387 | /* 64-bit signature of this type unit - it is valid only for | |
388 | UNIT_TYPE DW_UT_type. */ | |
389 | ULONGEST signature; | |
390 | ||
391 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 392 | cu_offset type_cu_offset_in_tu; |
a738430d | 393 | }; |
c906108c | 394 | |
3da10d80 KS |
395 | /* Type used for delaying computation of method physnames. |
396 | See comments for compute_delayed_physnames. */ | |
397 | struct delayed_method_info | |
398 | { | |
399 | /* The type to which the method is attached, i.e., its parent class. */ | |
400 | struct type *type; | |
401 | ||
402 | /* The index of the method in the type's function fieldlists. */ | |
403 | int fnfield_index; | |
404 | ||
405 | /* The index of the method in the fieldlist. */ | |
406 | int index; | |
407 | ||
408 | /* The name of the DIE. */ | |
409 | const char *name; | |
410 | ||
411 | /* The DIE associated with this method. */ | |
412 | struct die_info *die; | |
413 | }; | |
414 | ||
e7c27a73 DJ |
415 | /* Internal state when decoding a particular compilation unit. */ |
416 | struct dwarf2_cu | |
417 | { | |
fcd3b13d SM |
418 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
419 | ~dwarf2_cu (); | |
420 | ||
421 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
422 | ||
d00adf39 | 423 | /* The header of the compilation unit. */ |
fcd3b13d | 424 | struct comp_unit_head header {}; |
e142c38c | 425 | |
d00adf39 | 426 | /* Base address of this compilation unit. */ |
fcd3b13d | 427 | CORE_ADDR base_address = 0; |
d00adf39 DE |
428 | |
429 | /* Non-zero if base_address has been set. */ | |
fcd3b13d | 430 | int base_known = 0; |
d00adf39 | 431 | |
e142c38c | 432 | /* The language we are debugging. */ |
fcd3b13d SM |
433 | enum language language = language_unknown; |
434 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 435 | |
fcd3b13d | 436 | const char *producer = nullptr; |
b0f35d58 | 437 | |
e142c38c DJ |
438 | /* The generic symbol table building routines have separate lists for |
439 | file scope symbols and all all other scopes (local scopes). So | |
440 | we need to select the right one to pass to add_symbol_to_list(). | |
441 | We do it by keeping a pointer to the correct list in list_in_scope. | |
442 | ||
443 | FIXME: The original dwarf code just treated the file scope as the | |
444 | first local scope, and all other local scopes as nested local | |
445 | scopes, and worked fine. Check to see if we really need to | |
446 | distinguish these in buildsym.c. */ | |
fcd3b13d | 447 | struct pending **list_in_scope = nullptr; |
e142c38c | 448 | |
b64f50a1 JK |
449 | /* Hash table holding all the loaded partial DIEs |
450 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 451 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
452 | |
453 | /* Storage for things with the same lifetime as this read-in compilation | |
454 | unit, including partial DIEs. */ | |
fcd3b13d | 455 | auto_obstack comp_unit_obstack; |
72bf9492 | 456 | |
ae038cb0 DJ |
457 | /* When multiple dwarf2_cu structures are living in memory, this field |
458 | chains them all together, so that they can be released efficiently. | |
459 | We will probably also want a generation counter so that most-recently-used | |
460 | compilation units are cached... */ | |
fcd3b13d | 461 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 462 | |
69d751e3 | 463 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
464 | struct dwarf2_per_cu_data *per_cu; |
465 | ||
466 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 467 | int last_used = 0; |
ae038cb0 | 468 | |
b64f50a1 JK |
469 | /* A hash table of DIE cu_offset for following references with |
470 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 471 | htab_t die_hash = nullptr; |
10b3939b DJ |
472 | |
473 | /* Full DIEs if read in. */ | |
fcd3b13d | 474 | struct die_info *dies = nullptr; |
10b3939b DJ |
475 | |
476 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
477 | units referenced by this one. Only set during full symbol processing; | |
478 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 479 | htab_t dependencies = nullptr; |
10b3939b | 480 | |
cb1df416 | 481 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 482 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
483 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
484 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
485 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
486 | to the line header as long as this DIE is being processed. See | |
487 | process_die_scope. */ | |
fcd3b13d | 488 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 489 | |
3da10d80 KS |
490 | /* A list of methods which need to have physnames computed |
491 | after all type information has been read. */ | |
c89b44cd | 492 | std::vector<delayed_method_info> method_list; |
3da10d80 | 493 | |
96408a79 | 494 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 495 | htab_t call_site_htab = nullptr; |
96408a79 | 496 | |
034e5797 DE |
497 | /* Non-NULL if this CU came from a DWO file. |
498 | There is an invariant here that is important to remember: | |
499 | Except for attributes copied from the top level DIE in the "main" | |
500 | (or "stub") file in preparation for reading the DWO file | |
501 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
502 | Either there isn't a DWO file (in which case this is NULL and the point | |
503 | is moot), or there is and either we're not going to read it (in which | |
504 | case this is NULL) or there is and we are reading it (in which case this | |
505 | is non-NULL). */ | |
fcd3b13d | 506 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 DE |
507 | |
508 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
509 | (zero is a valid value though). | |
1dbab08b | 510 | Note this value comes from the Fission stub CU/TU's DIE. */ |
fcd3b13d | 511 | ULONGEST addr_base = 0; |
3019eac3 | 512 | |
2e3cf129 DE |
513 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
514 | (zero is a valid value though). | |
1dbab08b | 515 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 516 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
517 | be used without needing to know whether DWO files are in use or not. |
518 | N.B. This does not apply to DW_AT_ranges appearing in | |
519 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
520 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
521 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
522 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
fcd3b13d | 523 | ULONGEST ranges_base = 0; |
2e3cf129 | 524 | |
c9317f21 TT |
525 | /* When reading debug info generated by older versions of rustc, we |
526 | have to rewrite some union types to be struct types with a | |
527 | variant part. This rewriting must be done after the CU is fully | |
528 | read in, because otherwise at the point of rewriting some struct | |
529 | type might not have been fully processed. So, we keep a list of | |
530 | all such types here and process them after expansion. */ | |
531 | std::vector<struct type *> rust_unions; | |
532 | ||
ae038cb0 DJ |
533 | /* Mark used when releasing cached dies. */ |
534 | unsigned int mark : 1; | |
535 | ||
8be455d7 JK |
536 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
537 | This test is imperfect as there may exist optimized debug code not using | |
538 | any location list and still facing inlining issues if handled as | |
539 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 540 | unsigned int has_loclist : 1; |
ba919b58 | 541 | |
1b80a9fa JK |
542 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
543 | if all the producer_is_* fields are valid. This information is cached | |
544 | because profiling CU expansion showed excessive time spent in | |
545 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
546 | unsigned int checked_producer : 1; |
547 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 548 | unsigned int producer_is_gcc_lt_4_3 : 1; |
5230b05a | 549 | unsigned int producer_is_icc_lt_14 : 1; |
4d4ec4e5 TT |
550 | |
551 | /* When set, the file that we're processing is known to have | |
552 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
553 | this information, but later versions do. */ | |
554 | ||
555 | unsigned int processing_has_namespace_info : 1; | |
d590ff25 YQ |
556 | |
557 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
e7c27a73 DJ |
558 | }; |
559 | ||
094b34ac DE |
560 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
561 | This includes type_unit_group and quick_file_names. */ | |
562 | ||
563 | struct stmt_list_hash | |
564 | { | |
565 | /* The DWO unit this table is from or NULL if there is none. */ | |
566 | struct dwo_unit *dwo_unit; | |
567 | ||
568 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 569 | sect_offset line_sect_off; |
094b34ac DE |
570 | }; |
571 | ||
f4dc4d17 DE |
572 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
573 | an object of this type. */ | |
574 | ||
575 | struct type_unit_group | |
576 | { | |
0186c6a7 | 577 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
578 | To simplify things we create an artificial CU that "includes" all the |
579 | type units using this stmt_list so that the rest of the code still has | |
580 | a "per_cu" handle on the symtab. | |
581 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 582 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
583 | struct dwarf2_per_cu_data per_cu; |
584 | ||
0186c6a7 DE |
585 | /* The TUs that share this DW_AT_stmt_list entry. |
586 | This is added to while parsing type units to build partial symtabs, | |
587 | and is deleted afterwards and not used again. */ | |
588 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 589 | |
43f3e411 | 590 | /* The compunit symtab. |
094b34ac | 591 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
592 | so we create an essentially anonymous symtab as the compunit symtab. */ |
593 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 594 | |
094b34ac DE |
595 | /* The data used to construct the hash key. */ |
596 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
597 | |
598 | /* The number of symtabs from the line header. | |
599 | The value here must match line_header.num_file_names. */ | |
600 | unsigned int num_symtabs; | |
601 | ||
602 | /* The symbol tables for this TU (obtained from the files listed in | |
603 | DW_AT_stmt_list). | |
604 | WARNING: The order of entries here must match the order of entries | |
605 | in the line header. After the first TU using this type_unit_group, the | |
606 | line header for the subsequent TUs is recreated from this. This is done | |
607 | because we need to use the same symtabs for each TU using the same | |
608 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
609 | there's no guarantee the line header doesn't have duplicate entries. */ | |
610 | struct symtab **symtabs; | |
611 | }; | |
612 | ||
73869dc2 | 613 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
614 | |
615 | struct dwo_sections | |
616 | { | |
617 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
618 | struct dwarf2_section_info line; |
619 | struct dwarf2_section_info loc; | |
43988095 | 620 | struct dwarf2_section_info loclists; |
09262596 DE |
621 | struct dwarf2_section_info macinfo; |
622 | struct dwarf2_section_info macro; | |
3019eac3 DE |
623 | struct dwarf2_section_info str; |
624 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
625 | /* In the case of a virtual DWO file, these two are unused. */ |
626 | struct dwarf2_section_info info; | |
3019eac3 DE |
627 | VEC (dwarf2_section_info_def) *types; |
628 | }; | |
629 | ||
c88ee1f0 | 630 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
631 | |
632 | struct dwo_unit | |
633 | { | |
634 | /* Backlink to the containing struct dwo_file. */ | |
635 | struct dwo_file *dwo_file; | |
636 | ||
637 | /* The "id" that distinguishes this CU/TU. | |
638 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
639 | Since signatures came first, we stick with it for consistency. */ | |
640 | ULONGEST signature; | |
641 | ||
642 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 643 | struct dwarf2_section_info *section; |
3019eac3 | 644 | |
9c541725 PA |
645 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
646 | sect_offset sect_off; | |
3019eac3 DE |
647 | unsigned int length; |
648 | ||
649 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
650 | cu_offset type_offset_in_tu; | |
651 | }; | |
652 | ||
73869dc2 DE |
653 | /* include/dwarf2.h defines the DWP section codes. |
654 | It defines a max value but it doesn't define a min value, which we | |
655 | use for error checking, so provide one. */ | |
656 | ||
657 | enum dwp_v2_section_ids | |
658 | { | |
659 | DW_SECT_MIN = 1 | |
660 | }; | |
661 | ||
80626a55 | 662 | /* Data for one DWO file. |
57d63ce2 DE |
663 | |
664 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
665 | appears in a DWP file). DWP files don't really have DWO files per se - | |
666 | comdat folding of types "loses" the DWO file they came from, and from | |
667 | a high level view DWP files appear to contain a mass of random types. | |
668 | However, to maintain consistency with the non-DWP case we pretend DWP | |
669 | files contain virtual DWO files, and we assign each TU with one virtual | |
670 | DWO file (generally based on the line and abbrev section offsets - | |
671 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
672 | |
673 | struct dwo_file | |
674 | { | |
0ac5b59e | 675 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
676 | For virtual DWO files the name is constructed from the section offsets |
677 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
678 | from related CU+TUs. */ | |
0ac5b59e DE |
679 | const char *dwo_name; |
680 | ||
681 | /* The DW_AT_comp_dir attribute. */ | |
682 | const char *comp_dir; | |
3019eac3 | 683 | |
80626a55 DE |
684 | /* The bfd, when the file is open. Otherwise this is NULL. |
685 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
686 | bfd *dbfd; | |
3019eac3 | 687 | |
73869dc2 DE |
688 | /* The sections that make up this DWO file. |
689 | Remember that for virtual DWO files in DWP V2, these are virtual | |
690 | sections (for lack of a better name). */ | |
3019eac3 DE |
691 | struct dwo_sections sections; |
692 | ||
33c5cd75 DB |
693 | /* The CUs in the file. |
694 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
695 | an extension to handle LLVM's Link Time Optimization output (where | |
696 | multiple source files may be compiled into a single object/dwo pair). */ | |
697 | htab_t cus; | |
3019eac3 DE |
698 | |
699 | /* Table of TUs in the file. | |
700 | Each element is a struct dwo_unit. */ | |
701 | htab_t tus; | |
702 | }; | |
703 | ||
80626a55 DE |
704 | /* These sections are what may appear in a DWP file. */ |
705 | ||
706 | struct dwp_sections | |
707 | { | |
73869dc2 | 708 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
709 | struct dwarf2_section_info str; |
710 | struct dwarf2_section_info cu_index; | |
711 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
712 | |
713 | /* These are only used by DWP version 2 files. | |
714 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
715 | sections are referenced by section number, and are not recorded here. | |
716 | In DWP version 2 there is at most one copy of all these sections, each | |
717 | section being (effectively) comprised of the concatenation of all of the | |
718 | individual sections that exist in the version 1 format. | |
719 | To keep the code simple we treat each of these concatenated pieces as a | |
720 | section itself (a virtual section?). */ | |
721 | struct dwarf2_section_info abbrev; | |
722 | struct dwarf2_section_info info; | |
723 | struct dwarf2_section_info line; | |
724 | struct dwarf2_section_info loc; | |
725 | struct dwarf2_section_info macinfo; | |
726 | struct dwarf2_section_info macro; | |
727 | struct dwarf2_section_info str_offsets; | |
728 | struct dwarf2_section_info types; | |
80626a55 DE |
729 | }; |
730 | ||
73869dc2 DE |
731 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
732 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 733 | |
73869dc2 | 734 | struct virtual_v1_dwo_sections |
80626a55 DE |
735 | { |
736 | struct dwarf2_section_info abbrev; | |
737 | struct dwarf2_section_info line; | |
738 | struct dwarf2_section_info loc; | |
739 | struct dwarf2_section_info macinfo; | |
740 | struct dwarf2_section_info macro; | |
741 | struct dwarf2_section_info str_offsets; | |
742 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 743 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
744 | struct dwarf2_section_info info_or_types; |
745 | }; | |
746 | ||
73869dc2 DE |
747 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
748 | In version 2, the sections of the DWO files are concatenated together | |
749 | and stored in one section of that name. Thus each ELF section contains | |
750 | several "virtual" sections. */ | |
751 | ||
752 | struct virtual_v2_dwo_sections | |
753 | { | |
754 | bfd_size_type abbrev_offset; | |
755 | bfd_size_type abbrev_size; | |
756 | ||
757 | bfd_size_type line_offset; | |
758 | bfd_size_type line_size; | |
759 | ||
760 | bfd_size_type loc_offset; | |
761 | bfd_size_type loc_size; | |
762 | ||
763 | bfd_size_type macinfo_offset; | |
764 | bfd_size_type macinfo_size; | |
765 | ||
766 | bfd_size_type macro_offset; | |
767 | bfd_size_type macro_size; | |
768 | ||
769 | bfd_size_type str_offsets_offset; | |
770 | bfd_size_type str_offsets_size; | |
771 | ||
772 | /* Each DWP hash table entry records one CU or one TU. | |
773 | That is recorded here, and copied to dwo_unit.section. */ | |
774 | bfd_size_type info_or_types_offset; | |
775 | bfd_size_type info_or_types_size; | |
776 | }; | |
777 | ||
80626a55 DE |
778 | /* Contents of DWP hash tables. */ |
779 | ||
780 | struct dwp_hash_table | |
781 | { | |
73869dc2 | 782 | uint32_t version, nr_columns; |
80626a55 | 783 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
784 | const gdb_byte *hash_table, *unit_table; |
785 | union | |
786 | { | |
787 | struct | |
788 | { | |
789 | const gdb_byte *indices; | |
790 | } v1; | |
791 | struct | |
792 | { | |
793 | /* This is indexed by column number and gives the id of the section | |
794 | in that column. */ | |
795 | #define MAX_NR_V2_DWO_SECTIONS \ | |
796 | (1 /* .debug_info or .debug_types */ \ | |
797 | + 1 /* .debug_abbrev */ \ | |
798 | + 1 /* .debug_line */ \ | |
799 | + 1 /* .debug_loc */ \ | |
800 | + 1 /* .debug_str_offsets */ \ | |
801 | + 1 /* .debug_macro or .debug_macinfo */) | |
802 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
803 | const gdb_byte *offsets; | |
804 | const gdb_byte *sizes; | |
805 | } v2; | |
806 | } section_pool; | |
80626a55 DE |
807 | }; |
808 | ||
809 | /* Data for one DWP file. */ | |
810 | ||
811 | struct dwp_file | |
812 | { | |
813 | /* Name of the file. */ | |
814 | const char *name; | |
815 | ||
73869dc2 DE |
816 | /* File format version. */ |
817 | int version; | |
818 | ||
93417882 | 819 | /* The bfd. */ |
80626a55 DE |
820 | bfd *dbfd; |
821 | ||
822 | /* Section info for this file. */ | |
823 | struct dwp_sections sections; | |
824 | ||
57d63ce2 | 825 | /* Table of CUs in the file. */ |
80626a55 DE |
826 | const struct dwp_hash_table *cus; |
827 | ||
828 | /* Table of TUs in the file. */ | |
829 | const struct dwp_hash_table *tus; | |
830 | ||
19ac8c2e DE |
831 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
832 | htab_t loaded_cus; | |
833 | htab_t loaded_tus; | |
80626a55 | 834 | |
73869dc2 DE |
835 | /* Table to map ELF section numbers to their sections. |
836 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
837 | unsigned int num_sections; |
838 | asection **elf_sections; | |
839 | }; | |
840 | ||
36586728 TT |
841 | /* This represents a '.dwz' file. */ |
842 | ||
843 | struct dwz_file | |
844 | { | |
845 | /* A dwz file can only contain a few sections. */ | |
846 | struct dwarf2_section_info abbrev; | |
847 | struct dwarf2_section_info info; | |
848 | struct dwarf2_section_info str; | |
849 | struct dwarf2_section_info line; | |
850 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 851 | struct dwarf2_section_info gdb_index; |
927aa2e7 | 852 | struct dwarf2_section_info debug_names; |
36586728 TT |
853 | |
854 | /* The dwz's BFD. */ | |
855 | bfd *dwz_bfd; | |
856 | }; | |
857 | ||
0963b4bd MS |
858 | /* Struct used to pass misc. parameters to read_die_and_children, et |
859 | al. which are used for both .debug_info and .debug_types dies. | |
860 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 861 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
862 | |
863 | struct die_reader_specs | |
864 | { | |
a32a8923 | 865 | /* The bfd of die_section. */ |
93311388 DE |
866 | bfd* abfd; |
867 | ||
868 | /* The CU of the DIE we are parsing. */ | |
869 | struct dwarf2_cu *cu; | |
870 | ||
80626a55 | 871 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
872 | struct dwo_file *dwo_file; |
873 | ||
dee91e82 | 874 | /* The section the die comes from. |
3019eac3 | 875 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
876 | struct dwarf2_section_info *die_section; |
877 | ||
878 | /* die_section->buffer. */ | |
d521ce57 | 879 | const gdb_byte *buffer; |
f664829e DE |
880 | |
881 | /* The end of the buffer. */ | |
882 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
883 | |
884 | /* The value of the DW_AT_comp_dir attribute. */ | |
885 | const char *comp_dir; | |
685af9cd TT |
886 | |
887 | /* The abbreviation table to use when reading the DIEs. */ | |
888 | struct abbrev_table *abbrev_table; | |
93311388 DE |
889 | }; |
890 | ||
fd820528 | 891 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 892 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 893 | const gdb_byte *info_ptr, |
dee91e82 DE |
894 | struct die_info *comp_unit_die, |
895 | int has_children, | |
896 | void *data); | |
897 | ||
ecfb656c PA |
898 | /* A 1-based directory index. This is a strong typedef to prevent |
899 | accidentally using a directory index as a 0-based index into an | |
900 | array/vector. */ | |
901 | enum class dir_index : unsigned int {}; | |
902 | ||
903 | /* Likewise, a 1-based file name index. */ | |
904 | enum class file_name_index : unsigned int {}; | |
905 | ||
52059ffd TT |
906 | struct file_entry |
907 | { | |
fff8551c PA |
908 | file_entry () = default; |
909 | ||
ecfb656c | 910 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
911 | unsigned int mod_time_, unsigned int length_) |
912 | : name (name_), | |
ecfb656c | 913 | d_index (d_index_), |
fff8551c PA |
914 | mod_time (mod_time_), |
915 | length (length_) | |
916 | {} | |
917 | ||
ecfb656c PA |
918 | /* Return the include directory at D_INDEX stored in LH. Returns |
919 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
920 | const char *include_dir (const line_header *lh) const; |
921 | ||
fff8551c PA |
922 | /* The file name. Note this is an observing pointer. The memory is |
923 | owned by debug_line_buffer. */ | |
924 | const char *name {}; | |
925 | ||
8c43009f | 926 | /* The directory index (1-based). */ |
ecfb656c | 927 | dir_index d_index {}; |
fff8551c PA |
928 | |
929 | unsigned int mod_time {}; | |
930 | ||
931 | unsigned int length {}; | |
932 | ||
933 | /* True if referenced by the Line Number Program. */ | |
934 | bool included_p {}; | |
935 | ||
83769d0b | 936 | /* The associated symbol table, if any. */ |
fff8551c | 937 | struct symtab *symtab {}; |
52059ffd TT |
938 | }; |
939 | ||
debd256d JB |
940 | /* The line number information for a compilation unit (found in the |
941 | .debug_line section) begins with a "statement program header", | |
942 | which contains the following information. */ | |
943 | struct line_header | |
944 | { | |
fff8551c PA |
945 | line_header () |
946 | : offset_in_dwz {} | |
947 | {} | |
948 | ||
949 | /* Add an entry to the include directory table. */ | |
950 | void add_include_dir (const char *include_dir); | |
951 | ||
952 | /* Add an entry to the file name table. */ | |
ecfb656c | 953 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
954 | unsigned int mod_time, unsigned int length); |
955 | ||
ecfb656c | 956 | /* Return the include dir at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 957 | is out of bounds. */ |
ecfb656c | 958 | const char *include_dir_at (dir_index index) const |
8c43009f | 959 | { |
ecfb656c PA |
960 | /* Convert directory index number (1-based) to vector index |
961 | (0-based). */ | |
962 | size_t vec_index = to_underlying (index) - 1; | |
963 | ||
964 | if (vec_index >= include_dirs.size ()) | |
8c43009f | 965 | return NULL; |
ecfb656c | 966 | return include_dirs[vec_index]; |
8c43009f PA |
967 | } |
968 | ||
ecfb656c | 969 | /* Return the file name at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 970 | is out of bounds. */ |
ecfb656c | 971 | file_entry *file_name_at (file_name_index index) |
8c43009f | 972 | { |
ecfb656c PA |
973 | /* Convert file name index number (1-based) to vector index |
974 | (0-based). */ | |
975 | size_t vec_index = to_underlying (index) - 1; | |
976 | ||
977 | if (vec_index >= file_names.size ()) | |
fff8551c | 978 | return NULL; |
ecfb656c | 979 | return &file_names[vec_index]; |
fff8551c PA |
980 | } |
981 | ||
982 | /* Const version of the above. */ | |
983 | const file_entry *file_name_at (unsigned int index) const | |
984 | { | |
985 | if (index >= file_names.size ()) | |
8c43009f PA |
986 | return NULL; |
987 | return &file_names[index]; | |
988 | } | |
989 | ||
527f3840 | 990 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 991 | sect_offset sect_off {}; |
527f3840 JK |
992 | |
993 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
994 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
995 | ||
996 | unsigned int total_length {}; | |
997 | unsigned short version {}; | |
998 | unsigned int header_length {}; | |
999 | unsigned char minimum_instruction_length {}; | |
1000 | unsigned char maximum_ops_per_instruction {}; | |
1001 | unsigned char default_is_stmt {}; | |
1002 | int line_base {}; | |
1003 | unsigned char line_range {}; | |
1004 | unsigned char opcode_base {}; | |
debd256d JB |
1005 | |
1006 | /* standard_opcode_lengths[i] is the number of operands for the | |
1007 | standard opcode whose value is i. This means that | |
1008 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1009 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1010 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1011 | |
fff8551c PA |
1012 | /* The include_directories table. Note these are observing |
1013 | pointers. The memory is owned by debug_line_buffer. */ | |
1014 | std::vector<const char *> include_dirs; | |
debd256d | 1015 | |
fff8551c PA |
1016 | /* The file_names table. */ |
1017 | std::vector<file_entry> file_names; | |
debd256d JB |
1018 | |
1019 | /* The start and end of the statement program following this | |
6502dd73 | 1020 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1021 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
debd256d | 1022 | }; |
c906108c | 1023 | |
fff8551c PA |
1024 | typedef std::unique_ptr<line_header> line_header_up; |
1025 | ||
8c43009f PA |
1026 | const char * |
1027 | file_entry::include_dir (const line_header *lh) const | |
1028 | { | |
ecfb656c | 1029 | return lh->include_dir_at (d_index); |
8c43009f PA |
1030 | } |
1031 | ||
c906108c | 1032 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1033 | need this much information. */ |
6f06d47b | 1034 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1035 | { |
6f06d47b YQ |
1036 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1037 | ||
1038 | /* Disable assign but still keep copy ctor, which is needed | |
1039 | load_partial_dies. */ | |
1040 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1041 | ||
52356b79 YQ |
1042 | /* Adjust the partial die before generating a symbol for it. This |
1043 | function may set the is_external flag or change the DIE's | |
1044 | name. */ | |
1045 | void fixup (struct dwarf2_cu *cu); | |
1046 | ||
48fbe735 YQ |
1047 | /* Read a minimal amount of information into the minimal die |
1048 | structure. */ | |
1049 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1050 | const struct abbrev_info &abbrev, | |
1051 | const gdb_byte *info_ptr); | |
1052 | ||
72bf9492 | 1053 | /* Offset of this DIE. */ |
6f06d47b | 1054 | const sect_offset sect_off; |
72bf9492 DJ |
1055 | |
1056 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1057 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1058 | |
72bf9492 | 1059 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1060 | const unsigned int has_children : 1; |
1061 | ||
72bf9492 DJ |
1062 | unsigned int is_external : 1; |
1063 | unsigned int is_declaration : 1; | |
1064 | unsigned int has_type : 1; | |
1065 | unsigned int has_specification : 1; | |
1066 | unsigned int has_pc_info : 1; | |
481860b3 | 1067 | unsigned int may_be_inlined : 1; |
72bf9492 | 1068 | |
0c1b455e TT |
1069 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1070 | unsigned int main_subprogram : 1; | |
1071 | ||
72bf9492 DJ |
1072 | /* Flag set if the SCOPE field of this structure has been |
1073 | computed. */ | |
1074 | unsigned int scope_set : 1; | |
1075 | ||
fa4028e9 JB |
1076 | /* Flag set if the DIE has a byte_size attribute. */ |
1077 | unsigned int has_byte_size : 1; | |
1078 | ||
ff908ebf AW |
1079 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1080 | unsigned int has_const_value : 1; | |
1081 | ||
98bfdba5 PA |
1082 | /* Flag set if any of the DIE's children are template arguments. */ |
1083 | unsigned int has_template_arguments : 1; | |
1084 | ||
52356b79 | 1085 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1086 | unsigned int fixup_called : 1; |
1087 | ||
36586728 TT |
1088 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1089 | unsigned int is_dwz : 1; | |
1090 | ||
1091 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1092 | unsigned int spec_is_dwz : 1; | |
1093 | ||
72bf9492 | 1094 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1095 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1096 | const char *name = nullptr; |
72bf9492 | 1097 | |
abc72ce4 | 1098 | /* The linkage name, if present. */ |
6f06d47b | 1099 | const char *linkage_name = nullptr; |
abc72ce4 | 1100 | |
72bf9492 DJ |
1101 | /* The scope to prepend to our children. This is generally |
1102 | allocated on the comp_unit_obstack, so will disappear | |
1103 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1104 | const char *scope = nullptr; |
72bf9492 | 1105 | |
95554aad TT |
1106 | /* Some data associated with the partial DIE. The tag determines |
1107 | which field is live. */ | |
1108 | union | |
1109 | { | |
1110 | /* The location description associated with this DIE, if any. */ | |
1111 | struct dwarf_block *locdesc; | |
1112 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1113 | sect_offset sect_off; |
6f06d47b | 1114 | } d {}; |
72bf9492 DJ |
1115 | |
1116 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1117 | CORE_ADDR lowpc = 0; |
1118 | CORE_ADDR highpc = 0; | |
72bf9492 | 1119 | |
93311388 | 1120 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1121 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1122 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1123 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1124 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1125 | |
1126 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1127 | DW_AT_specification (or DW_AT_abstract_origin or | |
1128 | DW_AT_extension). */ | |
6f06d47b | 1129 | sect_offset spec_offset {}; |
72bf9492 DJ |
1130 | |
1131 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1132 | if any. */ | |
6f06d47b YQ |
1133 | struct partial_die_info *die_parent = nullptr; |
1134 | struct partial_die_info *die_child = nullptr; | |
1135 | struct partial_die_info *die_sibling = nullptr; | |
1136 | ||
1137 | friend struct partial_die_info * | |
1138 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1139 | ||
1140 | private: | |
1141 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1142 | partial_die_info (sect_offset sect_off) | |
1143 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1144 | { | |
1145 | } | |
1146 | ||
1147 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1148 | int has_children_) | |
1149 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1150 | { | |
1151 | is_external = 0; | |
1152 | is_declaration = 0; | |
1153 | has_type = 0; | |
1154 | has_specification = 0; | |
1155 | has_pc_info = 0; | |
1156 | may_be_inlined = 0; | |
1157 | main_subprogram = 0; | |
1158 | scope_set = 0; | |
1159 | has_byte_size = 0; | |
1160 | has_const_value = 0; | |
1161 | has_template_arguments = 0; | |
1162 | fixup_called = 0; | |
1163 | is_dwz = 0; | |
1164 | spec_is_dwz = 0; | |
1165 | } | |
c906108c SS |
1166 | }; |
1167 | ||
0963b4bd | 1168 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1169 | struct abbrev_info |
1170 | { | |
1171 | unsigned int number; /* number identifying abbrev */ | |
1172 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1173 | unsigned short has_children; /* boolean */ |
1174 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1175 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1176 | struct abbrev_info *next; /* next in chain */ | |
1177 | }; | |
1178 | ||
1179 | struct attr_abbrev | |
1180 | { | |
9d25dd43 DE |
1181 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1182 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1183 | |
1184 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1185 | LONGEST implicit_const; | |
c906108c SS |
1186 | }; |
1187 | ||
433df2d4 DE |
1188 | /* Size of abbrev_table.abbrev_hash_table. */ |
1189 | #define ABBREV_HASH_SIZE 121 | |
1190 | ||
1191 | /* Top level data structure to contain an abbreviation table. */ | |
1192 | ||
1193 | struct abbrev_table | |
1194 | { | |
685af9cd TT |
1195 | explicit abbrev_table (sect_offset off) |
1196 | : sect_off (off) | |
1197 | { | |
4a17f768 | 1198 | m_abbrevs = |
685af9cd | 1199 | XOBNEWVEC (&abbrev_obstack, struct abbrev_info *, ABBREV_HASH_SIZE); |
4a17f768 | 1200 | memset (m_abbrevs, 0, ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); |
685af9cd TT |
1201 | } |
1202 | ||
1203 | DISABLE_COPY_AND_ASSIGN (abbrev_table); | |
1204 | ||
1205 | /* Allocate space for a struct abbrev_info object in | |
1206 | ABBREV_TABLE. */ | |
1207 | struct abbrev_info *alloc_abbrev (); | |
1208 | ||
1209 | /* Add an abbreviation to the table. */ | |
1210 | void add_abbrev (unsigned int abbrev_number, struct abbrev_info *abbrev); | |
1211 | ||
1212 | /* Look up an abbrev in the table. | |
1213 | Returns NULL if the abbrev is not found. */ | |
1214 | ||
1215 | struct abbrev_info *lookup_abbrev (unsigned int abbrev_number); | |
1216 | ||
1217 | ||
f4dc4d17 DE |
1218 | /* Where the abbrev table came from. |
1219 | This is used as a sanity check when the table is used. */ | |
685af9cd | 1220 | const sect_offset sect_off; |
433df2d4 DE |
1221 | |
1222 | /* Storage for the abbrev table. */ | |
685af9cd | 1223 | auto_obstack abbrev_obstack; |
433df2d4 | 1224 | |
4a17f768 YQ |
1225 | private: |
1226 | ||
433df2d4 DE |
1227 | /* Hash table of abbrevs. |
1228 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1229 | It could be statically allocated, but the previous code didn't so we | |
1230 | don't either. */ | |
4a17f768 | 1231 | struct abbrev_info **m_abbrevs; |
433df2d4 DE |
1232 | }; |
1233 | ||
685af9cd TT |
1234 | typedef std::unique_ptr<struct abbrev_table> abbrev_table_up; |
1235 | ||
0963b4bd | 1236 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1237 | struct attribute |
1238 | { | |
9d25dd43 | 1239 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1240 | ENUM_BITFIELD(dwarf_form) form : 15; |
1241 | ||
1242 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1243 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1244 | here for better struct attribute alignment. */ | |
1245 | unsigned int string_is_canonical : 1; | |
1246 | ||
b60c80d6 DJ |
1247 | union |
1248 | { | |
15d034d0 | 1249 | const char *str; |
b60c80d6 | 1250 | struct dwarf_block *blk; |
43bbcdc2 PH |
1251 | ULONGEST unsnd; |
1252 | LONGEST snd; | |
b60c80d6 | 1253 | CORE_ADDR addr; |
ac9ec31b | 1254 | ULONGEST signature; |
b60c80d6 DJ |
1255 | } |
1256 | u; | |
1257 | }; | |
1258 | ||
0963b4bd | 1259 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1260 | struct die_info |
1261 | { | |
76815b17 DE |
1262 | /* DWARF-2 tag for this DIE. */ |
1263 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1264 | ||
1265 | /* Number of attributes */ | |
98bfdba5 PA |
1266 | unsigned char num_attrs; |
1267 | ||
1268 | /* True if we're presently building the full type name for the | |
1269 | type derived from this DIE. */ | |
1270 | unsigned char building_fullname : 1; | |
76815b17 | 1271 | |
adde2bff DE |
1272 | /* True if this die is in process. PR 16581. */ |
1273 | unsigned char in_process : 1; | |
1274 | ||
76815b17 DE |
1275 | /* Abbrev number */ |
1276 | unsigned int abbrev; | |
1277 | ||
93311388 | 1278 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1279 | sect_offset sect_off; |
78ba4af6 JB |
1280 | |
1281 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1282 | points to this die's parent; CHILD points to the first child of | |
1283 | this node; and all the children of a given node are chained | |
4950bc1c | 1284 | together via their SIBLING fields. */ |
639d11d3 DC |
1285 | struct die_info *child; /* Its first child, if any. */ |
1286 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1287 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1288 | |
b60c80d6 DJ |
1289 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1290 | zero, but it's not common and zero-sized arrays are not | |
1291 | sufficiently portable C. */ | |
1292 | struct attribute attrs[1]; | |
c906108c SS |
1293 | }; |
1294 | ||
0963b4bd | 1295 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1296 | |
1297 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1298 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1299 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1300 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1301 | #define DW_SND(attr) ((attr)->u.snd) | |
1302 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1303 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1304 | |
0963b4bd | 1305 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1306 | struct dwarf_block |
1307 | { | |
56eb65bd | 1308 | size_t size; |
1d6edc3c JK |
1309 | |
1310 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1311 | const gdb_byte *data; |
c906108c SS |
1312 | }; |
1313 | ||
c906108c SS |
1314 | #ifndef ATTR_ALLOC_CHUNK |
1315 | #define ATTR_ALLOC_CHUNK 4 | |
1316 | #endif | |
1317 | ||
c906108c SS |
1318 | /* Allocate fields for structs, unions and enums in this size. */ |
1319 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1320 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1321 | #endif | |
1322 | ||
c906108c SS |
1323 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1324 | but this would require a corresponding change in unpack_field_as_long | |
1325 | and friends. */ | |
1326 | static int bits_per_byte = 8; | |
1327 | ||
2ddeaf8a TT |
1328 | /* When reading a variant or variant part, we track a bit more |
1329 | information about the field, and store it in an object of this | |
1330 | type. */ | |
1331 | ||
1332 | struct variant_field | |
1333 | { | |
1334 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1335 | value. */ | |
1336 | ULONGEST discriminant_value; | |
1337 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1338 | default branch. */ | |
1339 | bool default_branch; | |
1340 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1341 | field is the discriminant. */ | |
1342 | bool is_discriminant; | |
1343 | }; | |
1344 | ||
52059ffd TT |
1345 | struct nextfield |
1346 | { | |
be2daae6 TT |
1347 | int accessibility = 0; |
1348 | int virtuality = 0; | |
2ddeaf8a | 1349 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1350 | struct variant_field variant {}; |
1351 | struct field field {}; | |
52059ffd TT |
1352 | }; |
1353 | ||
1354 | struct fnfieldlist | |
1355 | { | |
be2daae6 TT |
1356 | const char *name = nullptr; |
1357 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1358 | }; |
1359 | ||
c906108c SS |
1360 | /* The routines that read and process dies for a C struct or C++ class |
1361 | pass lists of data member fields and lists of member function fields | |
1362 | in an instance of a field_info structure, as defined below. */ | |
1363 | struct field_info | |
c5aa993b | 1364 | { |
0963b4bd | 1365 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1366 | std::vector<struct nextfield> fields; |
1367 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1368 | |
7d0ccb61 | 1369 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1370 | int nfields = 0; |
c906108c | 1371 | |
c5aa993b | 1372 | /* Set if the accesibility of one of the fields is not public. */ |
be2daae6 | 1373 | int non_public_fields = 0; |
c906108c | 1374 | |
c5aa993b JM |
1375 | /* Member function fieldlist array, contains name of possibly overloaded |
1376 | member function, number of overloaded member functions and a pointer | |
1377 | to the head of the member function field chain. */ | |
be2daae6 | 1378 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1379 | |
1380 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1381 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1382 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1383 | |
1384 | /* Nested types defined by this class and the number of elements in this | |
1385 | list. */ | |
be2daae6 | 1386 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1387 | }; |
c906108c | 1388 | |
10b3939b DJ |
1389 | /* One item on the queue of compilation units to read in full symbols |
1390 | for. */ | |
1391 | struct dwarf2_queue_item | |
1392 | { | |
1393 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1394 | enum language pretend_language; |
10b3939b DJ |
1395 | struct dwarf2_queue_item *next; |
1396 | }; | |
1397 | ||
1398 | /* The current queue. */ | |
1399 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1400 | ||
ae038cb0 DJ |
1401 | /* Loaded secondary compilation units are kept in memory until they |
1402 | have not been referenced for the processing of this many | |
1403 | compilation units. Set this to zero to disable caching. Cache | |
1404 | sizes of up to at least twenty will improve startup time for | |
1405 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1406 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1407 | static void |
b4f54984 DE |
1408 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1409 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1410 | { |
3e43a32a | 1411 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1412 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1413 | value); |
1414 | } | |
4390d890 | 1415 | \f |
c906108c SS |
1416 | /* local function prototypes */ |
1417 | ||
a32a8923 DE |
1418 | static const char *get_section_name (const struct dwarf2_section_info *); |
1419 | ||
1420 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1421 | ||
918dd910 JK |
1422 | static void dwarf2_find_base_address (struct die_info *die, |
1423 | struct dwarf2_cu *cu); | |
1424 | ||
0018ea6f DE |
1425 | static struct partial_symtab *create_partial_symtab |
1426 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1427 | ||
f1902523 JK |
1428 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1429 | const gdb_byte *info_ptr, | |
1430 | struct die_info *type_unit_die, | |
1431 | int has_children, void *data); | |
1432 | ||
ed2dc618 SM |
1433 | static void dwarf2_build_psymtabs_hard |
1434 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1435 | |
72bf9492 DJ |
1436 | static void scan_partial_symbols (struct partial_die_info *, |
1437 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1438 | int, struct dwarf2_cu *); |
c906108c | 1439 | |
72bf9492 DJ |
1440 | static void add_partial_symbol (struct partial_die_info *, |
1441 | struct dwarf2_cu *); | |
63d06c5c | 1442 | |
72bf9492 DJ |
1443 | static void add_partial_namespace (struct partial_die_info *pdi, |
1444 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1445 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1446 | |
5d7cb8df | 1447 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1448 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1449 | struct dwarf2_cu *cu); |
1450 | ||
72bf9492 DJ |
1451 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1452 | struct dwarf2_cu *cu); | |
91c24f0a | 1453 | |
bc30ff58 JB |
1454 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1455 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1456 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1457 | |
257e7a09 YQ |
1458 | static void dwarf2_read_symtab (struct partial_symtab *, |
1459 | struct objfile *); | |
c906108c | 1460 | |
a14ed312 | 1461 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1462 | |
685af9cd | 1463 | static abbrev_table_up abbrev_table_read_table |
ed2dc618 SM |
1464 | (struct dwarf2_per_objfile *dwarf2_per_objfile, struct dwarf2_section_info *, |
1465 | sect_offset); | |
433df2d4 | 1466 | |
d521ce57 | 1467 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1468 | |
dee91e82 | 1469 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1470 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1471 | |
36586728 | 1472 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1473 | struct dwarf2_cu *); |
72bf9492 | 1474 | |
d521ce57 TT |
1475 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1476 | struct attribute *, struct attr_abbrev *, | |
1477 | const gdb_byte *); | |
a8329558 | 1478 | |
a1855c1d | 1479 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1480 | |
a1855c1d | 1481 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1482 | |
a1855c1d | 1483 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1484 | |
a1855c1d | 1485 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1486 | |
a1855c1d | 1487 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1488 | |
d521ce57 | 1489 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1490 | unsigned int *); |
c906108c | 1491 | |
d521ce57 | 1492 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1493 | |
1494 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1495 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1496 | unsigned int *, unsigned int *); |
613e1657 | 1497 | |
d521ce57 TT |
1498 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1499 | const struct comp_unit_head *, | |
c764a876 DE |
1500 | unsigned int *); |
1501 | ||
d521ce57 | 1502 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1503 | |
ed2dc618 SM |
1504 | static sect_offset read_abbrev_offset |
1505 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1506 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1507 | |
d521ce57 | 1508 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1509 | |
d521ce57 | 1510 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1511 | |
ed2dc618 SM |
1512 | static const char *read_indirect_string |
1513 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1514 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1515 | |
ed2dc618 SM |
1516 | static const char *read_indirect_line_string |
1517 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1518 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1519 | |
ed2dc618 SM |
1520 | static const char *read_indirect_string_at_offset |
1521 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1522 | LONGEST str_offset); | |
927aa2e7 | 1523 | |
ed2dc618 SM |
1524 | static const char *read_indirect_string_from_dwz |
1525 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1526 | |
d521ce57 | 1527 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1528 | |
d521ce57 TT |
1529 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1530 | const gdb_byte *, | |
3019eac3 DE |
1531 | unsigned int *); |
1532 | ||
d521ce57 | 1533 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1534 | ULONGEST str_index); |
3019eac3 | 1535 | |
e142c38c | 1536 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1537 | |
e142c38c DJ |
1538 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1539 | struct dwarf2_cu *); | |
c906108c | 1540 | |
348e048f | 1541 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1542 | unsigned int); |
348e048f | 1543 | |
7d45c7c3 KB |
1544 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1545 | struct dwarf2_cu *cu); | |
1546 | ||
05cf31d1 JB |
1547 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1548 | struct dwarf2_cu *cu); | |
1549 | ||
e142c38c | 1550 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1551 | |
e142c38c | 1552 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1553 | struct dwarf2_cu **); |
63d06c5c | 1554 | |
9c541725 | 1555 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1556 | struct dwarf2_cu *cu); |
debd256d | 1557 | |
f3f5162e | 1558 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1559 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1560 | CORE_ADDR, int decode_mapping); |
c906108c | 1561 | |
4d663531 | 1562 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1563 | |
43f3e411 DE |
1564 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1565 | const char *, const char *, | |
1566 | CORE_ADDR); | |
f4dc4d17 | 1567 | |
a14ed312 | 1568 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1569 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1570 | |
ff39bb5e | 1571 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1572 | struct dwarf2_cu *); |
c906108c | 1573 | |
ff39bb5e | 1574 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1575 | struct type *type, |
1576 | const char *name, | |
1577 | struct obstack *obstack, | |
12df843f | 1578 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1579 | const gdb_byte **bytes, |
98bfdba5 | 1580 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1581 | |
e7c27a73 | 1582 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1583 | |
b4ba55a1 JB |
1584 | static int need_gnat_info (struct dwarf2_cu *); |
1585 | ||
3e43a32a MS |
1586 | static struct type *die_descriptive_type (struct die_info *, |
1587 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1588 | |
1589 | static void set_descriptive_type (struct type *, struct die_info *, | |
1590 | struct dwarf2_cu *); | |
1591 | ||
e7c27a73 DJ |
1592 | static struct type *die_containing_type (struct die_info *, |
1593 | struct dwarf2_cu *); | |
c906108c | 1594 | |
ff39bb5e | 1595 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1596 | struct dwarf2_cu *); |
c906108c | 1597 | |
f792889a | 1598 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1599 | |
673bfd45 DE |
1600 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1601 | ||
0d5cff50 | 1602 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1603 | |
6e70227d | 1604 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1605 | const char *suffix, int physname, |
1606 | struct dwarf2_cu *cu); | |
63d06c5c | 1607 | |
e7c27a73 | 1608 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1609 | |
348e048f DE |
1610 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1611 | ||
e7c27a73 | 1612 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1613 | |
e7c27a73 | 1614 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1615 | |
96408a79 SA |
1616 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1617 | ||
71a3c369 TT |
1618 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1619 | ||
ff013f42 JK |
1620 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1621 | struct dwarf2_cu *, struct partial_symtab *); | |
1622 | ||
3a2b436a | 1623 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1624 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1625 | enum pc_bounds_kind |
1626 | { | |
e385593e | 1627 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1628 | PC_BOUNDS_NOT_PRESENT, |
1629 | ||
e385593e JK |
1630 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1631 | were present but they do not form a valid range of PC addresses. */ | |
1632 | PC_BOUNDS_INVALID, | |
1633 | ||
3a2b436a JK |
1634 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1635 | PC_BOUNDS_RANGES, | |
1636 | ||
1637 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1638 | PC_BOUNDS_HIGH_LOW, | |
1639 | }; | |
1640 | ||
1641 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1642 | CORE_ADDR *, CORE_ADDR *, | |
1643 | struct dwarf2_cu *, | |
1644 | struct partial_symtab *); | |
c906108c | 1645 | |
fae299cd DC |
1646 | static void get_scope_pc_bounds (struct die_info *, |
1647 | CORE_ADDR *, CORE_ADDR *, | |
1648 | struct dwarf2_cu *); | |
1649 | ||
801e3a5b JB |
1650 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1651 | CORE_ADDR, struct dwarf2_cu *); | |
1652 | ||
a14ed312 | 1653 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1654 | struct dwarf2_cu *); |
c906108c | 1655 | |
a14ed312 | 1656 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1657 | struct type *, struct dwarf2_cu *); |
c906108c | 1658 | |
a14ed312 | 1659 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1660 | struct die_info *, struct type *, |
e7c27a73 | 1661 | struct dwarf2_cu *); |
c906108c | 1662 | |
a14ed312 | 1663 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1664 | struct type *, |
1665 | struct dwarf2_cu *); | |
c906108c | 1666 | |
134d01f1 | 1667 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1668 | |
e7c27a73 | 1669 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1670 | |
e7c27a73 | 1671 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1672 | |
5d7cb8df JK |
1673 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1674 | ||
22cee43f PMR |
1675 | static struct using_direct **using_directives (enum language); |
1676 | ||
27aa8d6a SW |
1677 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1678 | ||
74921315 KS |
1679 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1680 | ||
f55ee35c JK |
1681 | static struct type *read_module_type (struct die_info *die, |
1682 | struct dwarf2_cu *cu); | |
1683 | ||
38d518c9 | 1684 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1685 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1686 | |
134d01f1 | 1687 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1688 | |
e7c27a73 | 1689 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1690 | |
6e70227d | 1691 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1692 | struct dwarf2_cu *); |
1693 | ||
bf6af496 | 1694 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1695 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1696 | struct die_info *); |
639d11d3 | 1697 | |
dee91e82 | 1698 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1699 | const gdb_byte *info_ptr, |
1700 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1701 | struct die_info *parent); |
1702 | ||
d521ce57 TT |
1703 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1704 | struct die_info **, const gdb_byte *, | |
1705 | int *, int); | |
3019eac3 | 1706 | |
d521ce57 TT |
1707 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1708 | struct die_info **, const gdb_byte *, | |
1709 | int *); | |
93311388 | 1710 | |
e7c27a73 | 1711 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1712 | |
15d034d0 TT |
1713 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1714 | struct obstack *); | |
71c25dea | 1715 | |
15d034d0 | 1716 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1717 | |
15d034d0 | 1718 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1719 | struct die_info *die, |
1720 | struct dwarf2_cu *cu); | |
1721 | ||
ca69b9e6 DE |
1722 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1723 | struct dwarf2_cu *cu); | |
1724 | ||
e142c38c | 1725 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1726 | struct dwarf2_cu **); |
9219021c | 1727 | |
f39c6ffd | 1728 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1729 | |
f39c6ffd | 1730 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1731 | |
f39c6ffd | 1732 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1733 | |
a121b7c1 | 1734 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1735 | |
f39c6ffd | 1736 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1737 | |
f9aca02d | 1738 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1739 | |
d97bc12b DE |
1740 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1741 | ||
1742 | static void dump_die_for_error (struct die_info *); | |
1743 | ||
1744 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1745 | struct die_info *); | |
c906108c | 1746 | |
d97bc12b | 1747 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1748 | |
51545339 | 1749 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1750 | struct dwarf2_cu *); |
c906108c | 1751 | |
ff39bb5e | 1752 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1753 | |
ff39bb5e | 1754 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1755 | |
348e048f | 1756 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1757 | const struct attribute *, |
348e048f DE |
1758 | struct dwarf2_cu **); |
1759 | ||
10b3939b | 1760 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1761 | const struct attribute *, |
f2f0e013 | 1762 | struct dwarf2_cu **); |
c906108c | 1763 | |
348e048f | 1764 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1765 | const struct attribute *, |
348e048f DE |
1766 | struct dwarf2_cu **); |
1767 | ||
ac9ec31b DE |
1768 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1769 | struct dwarf2_cu *); | |
1770 | ||
1771 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1772 | const struct attribute *, |
ac9ec31b DE |
1773 | struct dwarf2_cu *); |
1774 | ||
e5fe5e75 | 1775 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1776 | |
52dc124a | 1777 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1778 | |
63e43d3a PMR |
1779 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1780 | struct die_info *die, struct dwarf2_cu *cu, | |
1781 | struct dynamic_prop *prop); | |
1782 | ||
c906108c SS |
1783 | /* memory allocation interface */ |
1784 | ||
7b5a2f43 | 1785 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1786 | |
b60c80d6 | 1787 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1788 | |
43f3e411 | 1789 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1790 | |
6e5a29e1 | 1791 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1792 | |
6e5a29e1 | 1793 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1794 | |
6e5a29e1 | 1795 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1796 | |
6e5a29e1 | 1797 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1798 | |
8cf6f0b1 TT |
1799 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1800 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1801 | const struct attribute *attr); |
8cf6f0b1 | 1802 | |
ff39bb5e | 1803 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1804 | struct symbol *sym, |
f1e6e072 TT |
1805 | struct dwarf2_cu *cu, |
1806 | int is_block); | |
4c2df51b | 1807 | |
d521ce57 TT |
1808 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1809 | const gdb_byte *info_ptr, | |
1810 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1811 | |
72bf9492 DJ |
1812 | static hashval_t partial_die_hash (const void *item); |
1813 | ||
1814 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1815 | ||
ae038cb0 | 1816 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1817 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1818 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1819 | |
9816fde3 | 1820 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1821 | struct die_info *comp_unit_die, |
1822 | enum language pretend_language); | |
93311388 | 1823 | |
ed2dc618 | 1824 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1825 | |
dee91e82 | 1826 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1827 | |
f792889a DJ |
1828 | static struct type *set_die_type (struct die_info *, struct type *, |
1829 | struct dwarf2_cu *); | |
1c379e20 | 1830 | |
ed2dc618 | 1831 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1832 | |
ed2dc618 | 1833 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1834 | |
95554aad TT |
1835 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1836 | enum language); | |
10b3939b | 1837 | |
95554aad TT |
1838 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1839 | enum language); | |
10b3939b | 1840 | |
f4dc4d17 DE |
1841 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1842 | enum language); | |
1843 | ||
10b3939b DJ |
1844 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1845 | struct dwarf2_per_cu_data *); | |
1846 | ||
ae038cb0 DJ |
1847 | static void dwarf2_mark (struct dwarf2_cu *); |
1848 | ||
1849 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1850 | ||
b64f50a1 | 1851 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1852 | struct dwarf2_per_cu_data *); |
673bfd45 | 1853 | |
f792889a | 1854 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1855 | |
95554aad TT |
1856 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1857 | enum language pretend_language); | |
1858 | ||
ed2dc618 | 1859 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1860 | |
b303c6f6 AB |
1861 | /* Class, the destructor of which frees all allocated queue entries. This |
1862 | will only have work to do if an error was thrown while processing the | |
1863 | dwarf. If no error was thrown then the queue entries should have all | |
1864 | been processed, and freed, as we went along. */ | |
1865 | ||
1866 | class dwarf2_queue_guard | |
1867 | { | |
1868 | public: | |
1869 | dwarf2_queue_guard () = default; | |
1870 | ||
1871 | /* Free any entries remaining on the queue. There should only be | |
1872 | entries left if we hit an error while processing the dwarf. */ | |
1873 | ~dwarf2_queue_guard () | |
1874 | { | |
1875 | struct dwarf2_queue_item *item, *last; | |
1876 | ||
1877 | item = dwarf2_queue; | |
1878 | while (item) | |
1879 | { | |
1880 | /* Anything still marked queued is likely to be in an | |
1881 | inconsistent state, so discard it. */ | |
1882 | if (item->per_cu->queued) | |
1883 | { | |
1884 | if (item->per_cu->cu != NULL) | |
1885 | free_one_cached_comp_unit (item->per_cu); | |
1886 | item->per_cu->queued = 0; | |
1887 | } | |
1888 | ||
1889 | last = item; | |
1890 | item = item->next; | |
1891 | xfree (last); | |
1892 | } | |
1893 | ||
1894 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
1895 | } | |
1896 | }; | |
1897 | ||
d721ba37 PA |
1898 | /* The return type of find_file_and_directory. Note, the enclosed |
1899 | string pointers are only valid while this object is valid. */ | |
1900 | ||
1901 | struct file_and_directory | |
1902 | { | |
1903 | /* The filename. This is never NULL. */ | |
1904 | const char *name; | |
1905 | ||
1906 | /* The compilation directory. NULL if not known. If we needed to | |
1907 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1908 | points directly to the DW_AT_comp_dir string attribute owned by | |
1909 | the obstack that owns the DIE. */ | |
1910 | const char *comp_dir; | |
1911 | ||
1912 | /* If we needed to build a new string for comp_dir, this is what | |
1913 | owns the storage. */ | |
1914 | std::string comp_dir_storage; | |
1915 | }; | |
1916 | ||
1917 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1918 | struct dwarf2_cu *cu); | |
9291a0cd TT |
1919 | |
1920 | static char *file_full_name (int file, struct line_header *lh, | |
1921 | const char *comp_dir); | |
1922 | ||
43988095 JK |
1923 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1924 | enum class rcuh_kind { COMPILE, TYPE }; | |
1925 | ||
d521ce57 | 1926 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
1927 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
1928 | struct comp_unit_head *header, | |
36586728 | 1929 | struct dwarf2_section_info *section, |
d521ce57 | 1930 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 1931 | rcuh_kind section_kind); |
36586728 | 1932 | |
fd820528 | 1933 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1934 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1935 | int use_existing_cu, int keep, | |
3019eac3 DE |
1936 | die_reader_func_ftype *die_reader_func, void *data); |
1937 | ||
dee91e82 DE |
1938 | static void init_cutu_and_read_dies_simple |
1939 | (struct dwarf2_per_cu_data *this_cu, | |
1940 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1941 | |
673bfd45 | 1942 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1943 | |
3019eac3 DE |
1944 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1945 | ||
57d63ce2 | 1946 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1947 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1948 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1949 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1950 | |
ed2dc618 SM |
1951 | static struct dwp_file *get_dwp_file |
1952 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1953 | |
3019eac3 | 1954 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1955 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1956 | |
1957 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1958 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1959 | |
89e63ee4 DE |
1960 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1961 | ||
263db9a1 | 1962 | static void free_dwo_file (struct dwo_file *); |
3019eac3 | 1963 | |
263db9a1 TT |
1964 | /* A unique_ptr helper to free a dwo_file. */ |
1965 | ||
1966 | struct dwo_file_deleter | |
ed2dc618 | 1967 | { |
263db9a1 TT |
1968 | void operator() (struct dwo_file *df) const |
1969 | { | |
1970 | free_dwo_file (df); | |
1971 | } | |
ed2dc618 SM |
1972 | }; |
1973 | ||
263db9a1 TT |
1974 | /* A unique pointer to a dwo_file. */ |
1975 | ||
1976 | typedef std::unique_ptr<struct dwo_file, dwo_file_deleter> dwo_file_up; | |
1977 | ||
ed2dc618 | 1978 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1979 | |
1b80a9fa | 1980 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1981 | |
1982 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1983 | \f |
1984 | /* Various complaints about symbol reading that don't abort the process. */ | |
1985 | ||
1986 | static void | |
1987 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1988 | { | |
1989 | complaint (&symfile_complaints, | |
1990 | _("statement list doesn't fit in .debug_line section")); | |
1991 | } | |
1992 | ||
1993 | static void | |
1994 | dwarf2_debug_line_missing_file_complaint (void) | |
1995 | { | |
1996 | complaint (&symfile_complaints, | |
1997 | _(".debug_line section has line data without a file")); | |
1998 | } | |
1999 | ||
2000 | static void | |
2001 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2002 | { | |
2003 | complaint (&symfile_complaints, | |
2004 | _(".debug_line section has line " | |
2005 | "program sequence without an end")); | |
2006 | } | |
2007 | ||
2008 | static void | |
2009 | dwarf2_complex_location_expr_complaint (void) | |
2010 | { | |
2011 | complaint (&symfile_complaints, _("location expression too complex")); | |
2012 | } | |
2013 | ||
2014 | static void | |
2015 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2016 | int arg3) | |
2017 | { | |
2018 | complaint (&symfile_complaints, | |
2019 | _("const value length mismatch for '%s', got %d, expected %d"), | |
2020 | arg1, arg2, arg3); | |
2021 | } | |
2022 | ||
2023 | static void | |
2024 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2025 | { | |
2026 | complaint (&symfile_complaints, | |
2027 | _("debug info runs off end of %s section" | |
2028 | " [in module %s]"), | |
a32a8923 DE |
2029 | get_section_name (section), |
2030 | get_section_file_name (section)); | |
4390d890 | 2031 | } |
1b80a9fa | 2032 | |
4390d890 DE |
2033 | static void |
2034 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2035 | { | |
2036 | complaint (&symfile_complaints, | |
2037 | _("macro debug info contains a " | |
2038 | "malformed macro definition:\n`%s'"), | |
2039 | arg1); | |
2040 | } | |
2041 | ||
2042 | static void | |
2043 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2044 | { | |
2045 | complaint (&symfile_complaints, | |
2046 | _("invalid attribute class or form for '%s' in '%s'"), | |
2047 | arg1, arg2); | |
2048 | } | |
527f3840 JK |
2049 | |
2050 | /* Hash function for line_header_hash. */ | |
2051 | ||
2052 | static hashval_t | |
2053 | line_header_hash (const struct line_header *ofs) | |
2054 | { | |
9c541725 | 2055 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2056 | } |
2057 | ||
2058 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2059 | ||
2060 | static hashval_t | |
2061 | line_header_hash_voidp (const void *item) | |
2062 | { | |
9a3c8263 | 2063 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2064 | |
2065 | return line_header_hash (ofs); | |
2066 | } | |
2067 | ||
2068 | /* Equality function for line_header_hash. */ | |
2069 | ||
2070 | static int | |
2071 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2072 | { | |
9a3c8263 SM |
2073 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2074 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2075 | |
9c541725 | 2076 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2077 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2078 | } | |
2079 | ||
4390d890 | 2080 | \f |
9291a0cd | 2081 | |
31aa7e4e JB |
2082 | /* Read the given attribute value as an address, taking the attribute's |
2083 | form into account. */ | |
2084 | ||
2085 | static CORE_ADDR | |
2086 | attr_value_as_address (struct attribute *attr) | |
2087 | { | |
2088 | CORE_ADDR addr; | |
2089 | ||
2090 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2091 | { | |
2092 | /* Aside from a few clearly defined exceptions, attributes that | |
2093 | contain an address must always be in DW_FORM_addr form. | |
2094 | Unfortunately, some compilers happen to be violating this | |
2095 | requirement by encoding addresses using other forms, such | |
2096 | as DW_FORM_data4 for example. For those broken compilers, | |
2097 | we try to do our best, without any guarantee of success, | |
2098 | to interpret the address correctly. It would also be nice | |
2099 | to generate a complaint, but that would require us to maintain | |
2100 | a list of legitimate cases where a non-address form is allowed, | |
2101 | as well as update callers to pass in at least the CU's DWARF | |
2102 | version. This is more overhead than what we're willing to | |
2103 | expand for a pretty rare case. */ | |
2104 | addr = DW_UNSND (attr); | |
2105 | } | |
2106 | else | |
2107 | addr = DW_ADDR (attr); | |
2108 | ||
2109 | return addr; | |
2110 | } | |
2111 | ||
330cdd98 PA |
2112 | /* See declaration. */ |
2113 | ||
2114 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
2115 | const dwarf2_debug_sections *names) | |
2116 | : objfile (objfile_) | |
2117 | { | |
2118 | if (names == NULL) | |
2119 | names = &dwarf2_elf_names; | |
2120 | ||
2121 | bfd *obfd = objfile->obfd; | |
2122 | ||
2123 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2124 | locate_sections (obfd, sec, *names); | |
2125 | } | |
2126 | ||
fc8e7e75 SM |
2127 | static void free_dwo_files (htab_t dwo_files, struct objfile *objfile); |
2128 | ||
330cdd98 PA |
2129 | dwarf2_per_objfile::~dwarf2_per_objfile () |
2130 | { | |
2131 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2132 | free_cached_comp_units (); | |
2133 | ||
2134 | if (quick_file_names_table) | |
2135 | htab_delete (quick_file_names_table); | |
2136 | ||
2137 | if (line_header_hash) | |
2138 | htab_delete (line_header_hash); | |
2139 | ||
b76e467d SM |
2140 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
2141 | VEC_free (dwarf2_per_cu_ptr, per_cu->imported_symtabs); | |
fc8e7e75 | 2142 | |
b2bdb8cf SM |
2143 | for (signatured_type *sig_type : all_type_units) |
2144 | VEC_free (dwarf2_per_cu_ptr, sig_type->per_cu.imported_symtabs); | |
fc8e7e75 SM |
2145 | |
2146 | VEC_free (dwarf2_section_info_def, types); | |
2147 | ||
2148 | if (dwo_files != NULL) | |
2149 | free_dwo_files (dwo_files, objfile); | |
2150 | if (dwp_file != NULL) | |
2151 | gdb_bfd_unref (dwp_file->dbfd); | |
2152 | ||
2153 | if (dwz_file != NULL && dwz_file->dwz_bfd) | |
2154 | gdb_bfd_unref (dwz_file->dwz_bfd); | |
2155 | ||
2156 | if (index_table != NULL) | |
2157 | index_table->~mapped_index (); | |
2158 | ||
330cdd98 PA |
2159 | /* Everything else should be on the objfile obstack. */ |
2160 | } | |
2161 | ||
2162 | /* See declaration. */ | |
2163 | ||
2164 | void | |
2165 | dwarf2_per_objfile::free_cached_comp_units () | |
2166 | { | |
2167 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2168 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2169 | while (per_cu != NULL) | |
2170 | { | |
2171 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2172 | ||
fcd3b13d | 2173 | delete per_cu->cu; |
330cdd98 PA |
2174 | *last_chain = next_cu; |
2175 | per_cu = next_cu; | |
2176 | } | |
2177 | } | |
2178 | ||
11ed8cad TT |
2179 | /* A helper class that calls free_cached_comp_units on |
2180 | destruction. */ | |
2181 | ||
2182 | class free_cached_comp_units | |
2183 | { | |
2184 | public: | |
2185 | ||
2186 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
2187 | : m_per_objfile (per_objfile) | |
2188 | { | |
2189 | } | |
2190 | ||
2191 | ~free_cached_comp_units () | |
2192 | { | |
2193 | m_per_objfile->free_cached_comp_units (); | |
2194 | } | |
2195 | ||
2196 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
2197 | ||
2198 | private: | |
2199 | ||
2200 | dwarf2_per_objfile *m_per_objfile; | |
2201 | }; | |
2202 | ||
c906108c | 2203 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2204 | information and return true if we have enough to do something. |
2205 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2206 | ELF names are used. */ | |
c906108c SS |
2207 | |
2208 | int | |
251d32d9 TG |
2209 | dwarf2_has_info (struct objfile *objfile, |
2210 | const struct dwarf2_debug_sections *names) | |
c906108c | 2211 | { |
97cbe998 SDJ |
2212 | if (objfile->flags & OBJF_READNEVER) |
2213 | return 0; | |
2214 | ||
ed2dc618 SM |
2215 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2216 | = get_dwarf2_per_objfile (objfile); | |
2217 | ||
2218 | if (dwarf2_per_objfile == NULL) | |
be391dca TT |
2219 | { |
2220 | /* Initialize per-objfile state. */ | |
fd90ace4 YQ |
2221 | dwarf2_per_objfile |
2222 | = new (&objfile->objfile_obstack) struct dwarf2_per_objfile (objfile, | |
2223 | names); | |
ed2dc618 | 2224 | set_dwarf2_per_objfile (objfile, dwarf2_per_objfile); |
be391dca | 2225 | } |
73869dc2 | 2226 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2227 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2228 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2229 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2230 | } |
2231 | ||
2232 | /* Return the containing section of virtual section SECTION. */ | |
2233 | ||
2234 | static struct dwarf2_section_info * | |
2235 | get_containing_section (const struct dwarf2_section_info *section) | |
2236 | { | |
2237 | gdb_assert (section->is_virtual); | |
2238 | return section->s.containing_section; | |
c906108c SS |
2239 | } |
2240 | ||
a32a8923 DE |
2241 | /* Return the bfd owner of SECTION. */ |
2242 | ||
2243 | static struct bfd * | |
2244 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2245 | { | |
73869dc2 DE |
2246 | if (section->is_virtual) |
2247 | { | |
2248 | section = get_containing_section (section); | |
2249 | gdb_assert (!section->is_virtual); | |
2250 | } | |
049412e3 | 2251 | return section->s.section->owner; |
a32a8923 DE |
2252 | } |
2253 | ||
2254 | /* Return the bfd section of SECTION. | |
2255 | Returns NULL if the section is not present. */ | |
2256 | ||
2257 | static asection * | |
2258 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2259 | { | |
73869dc2 DE |
2260 | if (section->is_virtual) |
2261 | { | |
2262 | section = get_containing_section (section); | |
2263 | gdb_assert (!section->is_virtual); | |
2264 | } | |
049412e3 | 2265 | return section->s.section; |
a32a8923 DE |
2266 | } |
2267 | ||
2268 | /* Return the name of SECTION. */ | |
2269 | ||
2270 | static const char * | |
2271 | get_section_name (const struct dwarf2_section_info *section) | |
2272 | { | |
2273 | asection *sectp = get_section_bfd_section (section); | |
2274 | ||
2275 | gdb_assert (sectp != NULL); | |
2276 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2277 | } | |
2278 | ||
2279 | /* Return the name of the file SECTION is in. */ | |
2280 | ||
2281 | static const char * | |
2282 | get_section_file_name (const struct dwarf2_section_info *section) | |
2283 | { | |
2284 | bfd *abfd = get_section_bfd_owner (section); | |
2285 | ||
2286 | return bfd_get_filename (abfd); | |
2287 | } | |
2288 | ||
2289 | /* Return the id of SECTION. | |
2290 | Returns 0 if SECTION doesn't exist. */ | |
2291 | ||
2292 | static int | |
2293 | get_section_id (const struct dwarf2_section_info *section) | |
2294 | { | |
2295 | asection *sectp = get_section_bfd_section (section); | |
2296 | ||
2297 | if (sectp == NULL) | |
2298 | return 0; | |
2299 | return sectp->id; | |
2300 | } | |
2301 | ||
2302 | /* Return the flags of SECTION. | |
73869dc2 | 2303 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2304 | |
2305 | static int | |
2306 | get_section_flags (const struct dwarf2_section_info *section) | |
2307 | { | |
2308 | asection *sectp = get_section_bfd_section (section); | |
2309 | ||
2310 | gdb_assert (sectp != NULL); | |
2311 | return bfd_get_section_flags (sectp->owner, sectp); | |
2312 | } | |
2313 | ||
251d32d9 TG |
2314 | /* When loading sections, we look either for uncompressed section or for |
2315 | compressed section names. */ | |
233a11ab CS |
2316 | |
2317 | static int | |
251d32d9 TG |
2318 | section_is_p (const char *section_name, |
2319 | const struct dwarf2_section_names *names) | |
233a11ab | 2320 | { |
251d32d9 TG |
2321 | if (names->normal != NULL |
2322 | && strcmp (section_name, names->normal) == 0) | |
2323 | return 1; | |
2324 | if (names->compressed != NULL | |
2325 | && strcmp (section_name, names->compressed) == 0) | |
2326 | return 1; | |
2327 | return 0; | |
233a11ab CS |
2328 | } |
2329 | ||
330cdd98 | 2330 | /* See declaration. */ |
c906108c | 2331 | |
330cdd98 PA |
2332 | void |
2333 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2334 | const dwarf2_debug_sections &names) | |
c906108c | 2335 | { |
dc7650b8 | 2336 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 | 2337 | |
dc7650b8 JK |
2338 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2339 | { | |
2340 | } | |
330cdd98 | 2341 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2342 | { |
330cdd98 PA |
2343 | this->info.s.section = sectp; |
2344 | this->info.size = bfd_get_section_size (sectp); | |
c906108c | 2345 | } |
330cdd98 | 2346 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2347 | { |
330cdd98 PA |
2348 | this->abbrev.s.section = sectp; |
2349 | this->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 2350 | } |
330cdd98 | 2351 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2352 | { |
330cdd98 PA |
2353 | this->line.s.section = sectp; |
2354 | this->line.size = bfd_get_section_size (sectp); | |
c906108c | 2355 | } |
330cdd98 | 2356 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2357 | { |
330cdd98 PA |
2358 | this->loc.s.section = sectp; |
2359 | this->loc.size = bfd_get_section_size (sectp); | |
c906108c | 2360 | } |
330cdd98 | 2361 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2362 | { |
330cdd98 PA |
2363 | this->loclists.s.section = sectp; |
2364 | this->loclists.size = bfd_get_section_size (sectp); | |
43988095 | 2365 | } |
330cdd98 | 2366 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2367 | { |
330cdd98 PA |
2368 | this->macinfo.s.section = sectp; |
2369 | this->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 2370 | } |
330cdd98 | 2371 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2372 | { |
330cdd98 PA |
2373 | this->macro.s.section = sectp; |
2374 | this->macro.size = bfd_get_section_size (sectp); | |
cf2c3c16 | 2375 | } |
330cdd98 | 2376 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2377 | { |
330cdd98 PA |
2378 | this->str.s.section = sectp; |
2379 | this->str.size = bfd_get_section_size (sectp); | |
c906108c | 2380 | } |
330cdd98 | 2381 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2382 | { |
330cdd98 PA |
2383 | this->line_str.s.section = sectp; |
2384 | this->line_str.size = bfd_get_section_size (sectp); | |
43988095 | 2385 | } |
330cdd98 | 2386 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2387 | { |
330cdd98 PA |
2388 | this->addr.s.section = sectp; |
2389 | this->addr.size = bfd_get_section_size (sectp); | |
3019eac3 | 2390 | } |
330cdd98 | 2391 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2392 | { |
330cdd98 PA |
2393 | this->frame.s.section = sectp; |
2394 | this->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2395 | } |
330cdd98 | 2396 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2397 | { |
330cdd98 PA |
2398 | this->eh_frame.s.section = sectp; |
2399 | this->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2400 | } |
330cdd98 | 2401 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2402 | { |
330cdd98 PA |
2403 | this->ranges.s.section = sectp; |
2404 | this->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 2405 | } |
330cdd98 | 2406 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2407 | { |
330cdd98 PA |
2408 | this->rnglists.s.section = sectp; |
2409 | this->rnglists.size = bfd_get_section_size (sectp); | |
43988095 | 2410 | } |
330cdd98 | 2411 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2412 | { |
8b70b953 TT |
2413 | struct dwarf2_section_info type_section; |
2414 | ||
2415 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2416 | type_section.s.section = sectp; |
8b70b953 TT |
2417 | type_section.size = bfd_get_section_size (sectp); |
2418 | ||
330cdd98 | 2419 | VEC_safe_push (dwarf2_section_info_def, this->types, |
8b70b953 | 2420 | &type_section); |
348e048f | 2421 | } |
330cdd98 | 2422 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2423 | { |
330cdd98 PA |
2424 | this->gdb_index.s.section = sectp; |
2425 | this->gdb_index.size = bfd_get_section_size (sectp); | |
9291a0cd | 2426 | } |
927aa2e7 JK |
2427 | else if (section_is_p (sectp->name, &names.debug_names)) |
2428 | { | |
2429 | this->debug_names.s.section = sectp; | |
2430 | this->debug_names.size = bfd_get_section_size (sectp); | |
2431 | } | |
2432 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2433 | { | |
2434 | this->debug_aranges.s.section = sectp; | |
2435 | this->debug_aranges.size = bfd_get_section_size (sectp); | |
2436 | } | |
dce234bc | 2437 | |
b4e1fd61 | 2438 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 | 2439 | && bfd_section_vma (abfd, sectp) == 0) |
330cdd98 | 2440 | this->has_section_at_zero = true; |
c906108c SS |
2441 | } |
2442 | ||
fceca515 DE |
2443 | /* A helper function that decides whether a section is empty, |
2444 | or not present. */ | |
9e0ac564 TT |
2445 | |
2446 | static int | |
19ac8c2e | 2447 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2448 | { |
73869dc2 DE |
2449 | if (section->is_virtual) |
2450 | return section->size == 0; | |
049412e3 | 2451 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2452 | } |
2453 | ||
cd4fb1b2 | 2454 | /* See dwarf2read.h. */ |
c906108c | 2455 | |
cd4fb1b2 SM |
2456 | void |
2457 | dwarf2_read_section (struct objfile *objfile, dwarf2_section_info *info) | |
c906108c | 2458 | { |
a32a8923 | 2459 | asection *sectp; |
3019eac3 | 2460 | bfd *abfd; |
dce234bc | 2461 | gdb_byte *buf, *retbuf; |
c906108c | 2462 | |
be391dca TT |
2463 | if (info->readin) |
2464 | return; | |
dce234bc | 2465 | info->buffer = NULL; |
be391dca | 2466 | info->readin = 1; |
188dd5d6 | 2467 | |
9e0ac564 | 2468 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2469 | return; |
c906108c | 2470 | |
a32a8923 | 2471 | sectp = get_section_bfd_section (info); |
3019eac3 | 2472 | |
73869dc2 DE |
2473 | /* If this is a virtual section we need to read in the real one first. */ |
2474 | if (info->is_virtual) | |
2475 | { | |
2476 | struct dwarf2_section_info *containing_section = | |
2477 | get_containing_section (info); | |
2478 | ||
2479 | gdb_assert (sectp != NULL); | |
2480 | if ((sectp->flags & SEC_RELOC) != 0) | |
2481 | { | |
2482 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2483 | " supported in section %s [in module %s]"), | |
2484 | get_section_name (info), get_section_file_name (info)); | |
2485 | } | |
2486 | dwarf2_read_section (objfile, containing_section); | |
2487 | /* Other code should have already caught virtual sections that don't | |
2488 | fit. */ | |
2489 | gdb_assert (info->virtual_offset + info->size | |
2490 | <= containing_section->size); | |
2491 | /* If the real section is empty or there was a problem reading the | |
2492 | section we shouldn't get here. */ | |
2493 | gdb_assert (containing_section->buffer != NULL); | |
2494 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2495 | return; | |
2496 | } | |
2497 | ||
4bf44c1c TT |
2498 | /* If the section has relocations, we must read it ourselves. |
2499 | Otherwise we attach it to the BFD. */ | |
2500 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2501 | { |
d521ce57 | 2502 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2503 | return; |
dce234bc | 2504 | } |
dce234bc | 2505 | |
224c3ddb | 2506 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2507 | info->buffer = buf; |
dce234bc PP |
2508 | |
2509 | /* When debugging .o files, we may need to apply relocations; see | |
2510 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2511 | We never compress sections in .o files, so we only need to | |
2512 | try this when the section is not compressed. */ | |
ac8035ab | 2513 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2514 | if (retbuf != NULL) |
2515 | { | |
2516 | info->buffer = retbuf; | |
2517 | return; | |
2518 | } | |
2519 | ||
a32a8923 DE |
2520 | abfd = get_section_bfd_owner (info); |
2521 | gdb_assert (abfd != NULL); | |
2522 | ||
dce234bc PP |
2523 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2524 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2525 | { |
2526 | error (_("Dwarf Error: Can't read DWARF data" | |
2527 | " in section %s [in module %s]"), | |
2528 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2529 | } | |
dce234bc PP |
2530 | } |
2531 | ||
9e0ac564 TT |
2532 | /* A helper function that returns the size of a section in a safe way. |
2533 | If you are positive that the section has been read before using the | |
2534 | size, then it is safe to refer to the dwarf2_section_info object's | |
2535 | "size" field directly. In other cases, you must call this | |
2536 | function, because for compressed sections the size field is not set | |
2537 | correctly until the section has been read. */ | |
2538 | ||
2539 | static bfd_size_type | |
2540 | dwarf2_section_size (struct objfile *objfile, | |
2541 | struct dwarf2_section_info *info) | |
2542 | { | |
2543 | if (!info->readin) | |
2544 | dwarf2_read_section (objfile, info); | |
2545 | return info->size; | |
2546 | } | |
2547 | ||
dce234bc | 2548 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2549 | SECTION_NAME. */ |
af34e669 | 2550 | |
dce234bc | 2551 | void |
3017a003 TG |
2552 | dwarf2_get_section_info (struct objfile *objfile, |
2553 | enum dwarf2_section_enum sect, | |
d521ce57 | 2554 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2555 | bfd_size_type *sizep) |
2556 | { | |
2557 | struct dwarf2_per_objfile *data | |
9a3c8263 SM |
2558 | = (struct dwarf2_per_objfile *) objfile_data (objfile, |
2559 | dwarf2_objfile_data_key); | |
dce234bc | 2560 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2561 | |
2562 | /* We may see an objfile without any DWARF, in which case we just | |
2563 | return nothing. */ | |
2564 | if (data == NULL) | |
2565 | { | |
2566 | *sectp = NULL; | |
2567 | *bufp = NULL; | |
2568 | *sizep = 0; | |
2569 | return; | |
2570 | } | |
3017a003 TG |
2571 | switch (sect) |
2572 | { | |
2573 | case DWARF2_DEBUG_FRAME: | |
2574 | info = &data->frame; | |
2575 | break; | |
2576 | case DWARF2_EH_FRAME: | |
2577 | info = &data->eh_frame; | |
2578 | break; | |
2579 | default: | |
2580 | gdb_assert_not_reached ("unexpected section"); | |
2581 | } | |
dce234bc | 2582 | |
9e0ac564 | 2583 | dwarf2_read_section (objfile, info); |
dce234bc | 2584 | |
a32a8923 | 2585 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2586 | *bufp = info->buffer; |
2587 | *sizep = info->size; | |
2588 | } | |
2589 | ||
36586728 TT |
2590 | /* A helper function to find the sections for a .dwz file. */ |
2591 | ||
2592 | static void | |
2593 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2594 | { | |
9a3c8263 | 2595 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2596 | |
2597 | /* Note that we only support the standard ELF names, because .dwz | |
2598 | is ELF-only (at the time of writing). */ | |
2599 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2600 | { | |
049412e3 | 2601 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2602 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2603 | } | |
2604 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2605 | { | |
049412e3 | 2606 | dwz_file->info.s.section = sectp; |
36586728 TT |
2607 | dwz_file->info.size = bfd_get_section_size (sectp); |
2608 | } | |
2609 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2610 | { | |
049412e3 | 2611 | dwz_file->str.s.section = sectp; |
36586728 TT |
2612 | dwz_file->str.size = bfd_get_section_size (sectp); |
2613 | } | |
2614 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2615 | { | |
049412e3 | 2616 | dwz_file->line.s.section = sectp; |
36586728 TT |
2617 | dwz_file->line.size = bfd_get_section_size (sectp); |
2618 | } | |
2619 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2620 | { | |
049412e3 | 2621 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2622 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2623 | } | |
2ec9a5e0 TT |
2624 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2625 | { | |
049412e3 | 2626 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2627 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2628 | } | |
927aa2e7 JK |
2629 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2630 | { | |
2631 | dwz_file->debug_names.s.section = sectp; | |
2632 | dwz_file->debug_names.size = bfd_get_section_size (sectp); | |
2633 | } | |
36586728 TT |
2634 | } |
2635 | ||
4db1a1dc TT |
2636 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2637 | there is no .gnu_debugaltlink section in the file. Error if there | |
2638 | is such a section but the file cannot be found. */ | |
36586728 TT |
2639 | |
2640 | static struct dwz_file * | |
ed2dc618 | 2641 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2642 | { |
36586728 TT |
2643 | const char *filename; |
2644 | struct dwz_file *result; | |
acd13123 | 2645 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2646 | size_t buildid_len; |
2647 | bfd_byte *buildid; | |
36586728 TT |
2648 | |
2649 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2650 | return dwarf2_per_objfile->dwz_file; | |
2651 | ||
4db1a1dc | 2652 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2653 | gdb::unique_xmalloc_ptr<char> data |
2654 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2655 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2656 | if (data == NULL) |
2657 | { | |
2658 | if (bfd_get_error () == bfd_error_no_error) | |
2659 | return NULL; | |
2660 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2661 | bfd_errmsg (bfd_get_error ())); | |
2662 | } | |
791afaa2 TT |
2663 | |
2664 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2665 | |
acd13123 TT |
2666 | buildid_len = (size_t) buildid_len_arg; |
2667 | ||
791afaa2 | 2668 | filename = data.get (); |
d721ba37 PA |
2669 | |
2670 | std::string abs_storage; | |
36586728 TT |
2671 | if (!IS_ABSOLUTE_PATH (filename)) |
2672 | { | |
14278e1f TT |
2673 | gdb::unique_xmalloc_ptr<char> abs |
2674 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2675 | |
14278e1f | 2676 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2677 | filename = abs_storage.c_str (); |
36586728 TT |
2678 | } |
2679 | ||
dc294be5 TT |
2680 | /* First try the file name given in the section. If that doesn't |
2681 | work, try to use the build-id instead. */ | |
192b62ce | 2682 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2683 | if (dwz_bfd != NULL) |
36586728 | 2684 | { |
192b62ce TT |
2685 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
2686 | dwz_bfd.release (); | |
36586728 TT |
2687 | } |
2688 | ||
dc294be5 TT |
2689 | if (dwz_bfd == NULL) |
2690 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2691 | ||
2692 | if (dwz_bfd == NULL) | |
2693 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2694 | objfile_name (dwarf2_per_objfile->objfile)); | |
2695 | ||
36586728 TT |
2696 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
2697 | struct dwz_file); | |
192b62ce | 2698 | result->dwz_bfd = dwz_bfd.release (); |
36586728 | 2699 | |
192b62ce | 2700 | bfd_map_over_sections (result->dwz_bfd, locate_dwz_sections, result); |
36586728 | 2701 | |
192b62ce | 2702 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, result->dwz_bfd); |
8d2cc612 | 2703 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2704 | return result; |
2705 | } | |
9291a0cd | 2706 | \f |
7b9f3c50 DE |
2707 | /* DWARF quick_symbols_functions support. */ |
2708 | ||
2709 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2710 | unique line tables, so we maintain a separate table of all .debug_line | |
2711 | derived entries to support the sharing. | |
2712 | All the quick functions need is the list of file names. We discard the | |
2713 | line_header when we're done and don't need to record it here. */ | |
2714 | struct quick_file_names | |
2715 | { | |
094b34ac DE |
2716 | /* The data used to construct the hash key. */ |
2717 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2718 | |
2719 | /* The number of entries in file_names, real_names. */ | |
2720 | unsigned int num_file_names; | |
2721 | ||
2722 | /* The file names from the line table, after being run through | |
2723 | file_full_name. */ | |
2724 | const char **file_names; | |
2725 | ||
2726 | /* The file names from the line table after being run through | |
2727 | gdb_realpath. These are computed lazily. */ | |
2728 | const char **real_names; | |
2729 | }; | |
2730 | ||
2731 | /* When using the index (and thus not using psymtabs), each CU has an | |
2732 | object of this type. This is used to hold information needed by | |
2733 | the various "quick" methods. */ | |
2734 | struct dwarf2_per_cu_quick_data | |
2735 | { | |
2736 | /* The file table. This can be NULL if there was no file table | |
2737 | or it's currently not read in. | |
2738 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2739 | struct quick_file_names *file_names; | |
2740 | ||
2741 | /* The corresponding symbol table. This is NULL if symbols for this | |
2742 | CU have not yet been read. */ | |
43f3e411 | 2743 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2744 | |
2745 | /* A temporary mark bit used when iterating over all CUs in | |
2746 | expand_symtabs_matching. */ | |
2747 | unsigned int mark : 1; | |
2748 | ||
2749 | /* True if we've tried to read the file table and found there isn't one. | |
2750 | There will be no point in trying to read it again next time. */ | |
2751 | unsigned int no_file_data : 1; | |
2752 | }; | |
2753 | ||
094b34ac DE |
2754 | /* Utility hash function for a stmt_list_hash. */ |
2755 | ||
2756 | static hashval_t | |
2757 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2758 | { | |
2759 | hashval_t v = 0; | |
2760 | ||
2761 | if (stmt_list_hash->dwo_unit != NULL) | |
2762 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2763 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2764 | return v; |
2765 | } | |
2766 | ||
2767 | /* Utility equality function for a stmt_list_hash. */ | |
2768 | ||
2769 | static int | |
2770 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2771 | const struct stmt_list_hash *rhs) | |
2772 | { | |
2773 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2774 | return 0; | |
2775 | if (lhs->dwo_unit != NULL | |
2776 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2777 | return 0; | |
2778 | ||
9c541725 | 2779 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2780 | } |
2781 | ||
7b9f3c50 DE |
2782 | /* Hash function for a quick_file_names. */ |
2783 | ||
2784 | static hashval_t | |
2785 | hash_file_name_entry (const void *e) | |
2786 | { | |
9a3c8263 SM |
2787 | const struct quick_file_names *file_data |
2788 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2789 | |
094b34ac | 2790 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2791 | } |
2792 | ||
2793 | /* Equality function for a quick_file_names. */ | |
2794 | ||
2795 | static int | |
2796 | eq_file_name_entry (const void *a, const void *b) | |
2797 | { | |
9a3c8263 SM |
2798 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2799 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2800 | |
094b34ac | 2801 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2802 | } |
2803 | ||
2804 | /* Delete function for a quick_file_names. */ | |
2805 | ||
2806 | static void | |
2807 | delete_file_name_entry (void *e) | |
2808 | { | |
9a3c8263 | 2809 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2810 | int i; |
2811 | ||
2812 | for (i = 0; i < file_data->num_file_names; ++i) | |
2813 | { | |
2814 | xfree ((void*) file_data->file_names[i]); | |
2815 | if (file_data->real_names) | |
2816 | xfree ((void*) file_data->real_names[i]); | |
2817 | } | |
2818 | ||
2819 | /* The space for the struct itself lives on objfile_obstack, | |
2820 | so we don't free it here. */ | |
2821 | } | |
2822 | ||
2823 | /* Create a quick_file_names hash table. */ | |
2824 | ||
2825 | static htab_t | |
2826 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2827 | { | |
2828 | return htab_create_alloc (nr_initial_entries, | |
2829 | hash_file_name_entry, eq_file_name_entry, | |
2830 | delete_file_name_entry, xcalloc, xfree); | |
2831 | } | |
9291a0cd | 2832 | |
918dd910 JK |
2833 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2834 | have to be created afterwards. You should call age_cached_comp_units after | |
2835 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2836 | ||
2837 | static void | |
2838 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2839 | { | |
3019eac3 | 2840 | if (per_cu->is_debug_types) |
e5fe5e75 | 2841 | load_full_type_unit (per_cu); |
918dd910 | 2842 | else |
95554aad | 2843 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2844 | |
cc12ce38 DE |
2845 | if (per_cu->cu == NULL) |
2846 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2847 | |
2848 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2849 | } |
2850 | ||
a0f42c21 | 2851 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2852 | |
9291a0cd | 2853 | static void |
a0f42c21 | 2854 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2855 | { |
ed2dc618 | 2856 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2857 | |
f4dc4d17 DE |
2858 | /* Skip type_unit_groups, reading the type units they contain |
2859 | is handled elsewhere. */ | |
2860 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2861 | return; | |
2862 | ||
b303c6f6 AB |
2863 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2864 | the queue. After this point we're guaranteed to leave this function | |
2865 | with the dwarf queue empty. */ | |
2866 | dwarf2_queue_guard q_guard; | |
9291a0cd | 2867 | |
95554aad | 2868 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2869 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2870 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2871 | { | |
2872 | queue_comp_unit (per_cu, language_minimal); | |
2873 | load_cu (per_cu); | |
89e63ee4 DE |
2874 | |
2875 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2876 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2877 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2878 | if (!per_cu->is_debug_types | |
cc12ce38 | 2879 | && per_cu->cu != NULL |
89e63ee4 DE |
2880 | && per_cu->cu->dwo_unit != NULL |
2881 | && dwarf2_per_objfile->index_table != NULL | |
2882 | && dwarf2_per_objfile->index_table->version <= 7 | |
2883 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2884 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2885 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2886 | } |
9291a0cd | 2887 | |
ed2dc618 | 2888 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2889 | |
2890 | /* Age the cache, releasing compilation units that have not | |
2891 | been used recently. */ | |
ed2dc618 | 2892 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2893 | } |
2894 | ||
2895 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2896 | the objfile from which this CU came. Returns the resulting symbol | |
2897 | table. */ | |
2fdf6df6 | 2898 | |
43f3e411 | 2899 | static struct compunit_symtab * |
a0f42c21 | 2900 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2901 | { |
ed2dc618 SM |
2902 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2903 | ||
95554aad | 2904 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2905 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2906 | { |
11ed8cad | 2907 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2908 | scoped_restore decrementer = increment_reading_symtab (); |
a0f42c21 | 2909 | dw2_do_instantiate_symtab (per_cu); |
ed2dc618 | 2910 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2911 | } |
f194fefb | 2912 | |
43f3e411 | 2913 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2914 | } |
2915 | ||
ff4c9fec | 2916 | /* See declaration. */ |
f4dc4d17 | 2917 | |
ff4c9fec SM |
2918 | dwarf2_per_cu_data * |
2919 | dwarf2_per_objfile::get_cutu (int index) | |
2920 | { | |
b76e467d | 2921 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2922 | { |
b76e467d | 2923 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2924 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2925 | return &this->all_type_units[index]->per_cu; |
2926 | } | |
f4dc4d17 | 2927 | |
ff4c9fec SM |
2928 | return this->all_comp_units[index]; |
2929 | } | |
f4dc4d17 | 2930 | |
ff4c9fec | 2931 | /* See declaration. */ |
2fdf6df6 | 2932 | |
ff4c9fec SM |
2933 | dwarf2_per_cu_data * |
2934 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2935 | { |
b76e467d | 2936 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2937 | |
ff4c9fec | 2938 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2939 | } |
2940 | ||
ff4c9fec | 2941 | /* See declaration. */ |
f4dc4d17 | 2942 | |
ff4c9fec SM |
2943 | signatured_type * |
2944 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2945 | { |
b2bdb8cf | 2946 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2947 | |
ff4c9fec | 2948 | return this->all_type_units[index]; |
1fd400ff TT |
2949 | } |
2950 | ||
4b514bc8 JK |
2951 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2952 | objfile_obstack, and constructed with the specified field | |
2953 | values. */ | |
2954 | ||
2955 | static dwarf2_per_cu_data * | |
ed2dc618 | 2956 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2957 | struct dwarf2_section_info *section, |
2958 | int is_dwz, | |
2959 | sect_offset sect_off, ULONGEST length) | |
2960 | { | |
ed2dc618 | 2961 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2962 | dwarf2_per_cu_data *the_cu |
2963 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2964 | struct dwarf2_per_cu_data); | |
2965 | the_cu->sect_off = sect_off; | |
2966 | the_cu->length = length; | |
e3b94546 | 2967 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
2968 | the_cu->section = section; |
2969 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2970 | struct dwarf2_per_cu_quick_data); | |
2971 | the_cu->is_dwz = is_dwz; | |
2972 | return the_cu; | |
2973 | } | |
2974 | ||
2ec9a5e0 TT |
2975 | /* A helper for create_cus_from_index that handles a given list of |
2976 | CUs. */ | |
2fdf6df6 | 2977 | |
74a0d9f6 | 2978 | static void |
12359b5e | 2979 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2980 | const gdb_byte *cu_list, offset_type n_elements, |
2981 | struct dwarf2_section_info *section, | |
b76e467d | 2982 | int is_dwz) |
9291a0cd | 2983 | { |
12359b5e | 2984 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2985 | { |
74a0d9f6 | 2986 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2987 | |
2988 | sect_offset sect_off | |
2989 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2990 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2991 | cu_list += 2 * 8; |
2992 | ||
b76e467d | 2993 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
2994 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
2995 | sect_off, length); | |
b76e467d | 2996 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 2997 | } |
9291a0cd TT |
2998 | } |
2999 | ||
2ec9a5e0 | 3000 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 3001 | the CU objects for this objfile. */ |
2ec9a5e0 | 3002 | |
74a0d9f6 | 3003 | static void |
12359b5e | 3004 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
3005 | const gdb_byte *cu_list, offset_type cu_list_elements, |
3006 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3007 | { | |
b76e467d SM |
3008 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
3009 | dwarf2_per_objfile->all_comp_units.reserve | |
3010 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 3011 | |
12359b5e | 3012 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 3013 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
3014 | |
3015 | if (dwz_elements == 0) | |
74a0d9f6 | 3016 | return; |
2ec9a5e0 | 3017 | |
12359b5e SM |
3018 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
3019 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 3020 | &dwz->info, 1); |
2ec9a5e0 TT |
3021 | } |
3022 | ||
1fd400ff | 3023 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3024 | |
74a0d9f6 | 3025 | static void |
12359b5e SM |
3026 | create_signatured_type_table_from_index |
3027 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3028 | struct dwarf2_section_info *section, | |
3029 | const gdb_byte *bytes, | |
3030 | offset_type elements) | |
1fd400ff | 3031 | { |
12359b5e | 3032 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 3033 | |
b2bdb8cf SM |
3034 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3035 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 3036 | |
12359b5e | 3037 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff | 3038 | |
12359b5e | 3039 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 3040 | { |
52dc124a | 3041 | struct signatured_type *sig_type; |
9c541725 | 3042 | ULONGEST signature; |
1fd400ff | 3043 | void **slot; |
9c541725 | 3044 | cu_offset type_offset_in_tu; |
1fd400ff | 3045 | |
74a0d9f6 | 3046 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3047 | sect_offset sect_off |
3048 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3049 | type_offset_in_tu | |
3050 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3051 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3052 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3053 | bytes += 3 * 8; | |
3054 | ||
52dc124a | 3055 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3056 | struct signatured_type); |
52dc124a | 3057 | sig_type->signature = signature; |
9c541725 | 3058 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3059 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3060 | sig_type->per_cu.section = section; |
9c541725 | 3061 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 3062 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 3063 | sig_type->per_cu.v.quick |
1fd400ff TT |
3064 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3065 | struct dwarf2_per_cu_quick_data); | |
3066 | ||
52dc124a DE |
3067 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3068 | *slot = sig_type; | |
1fd400ff | 3069 | |
b2bdb8cf | 3070 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
3071 | } |
3072 | ||
673bfd45 | 3073 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3074 | } |
3075 | ||
927aa2e7 JK |
3076 | /* Create the signatured type hash table from .debug_names. */ |
3077 | ||
3078 | static void | |
3079 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 3080 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3081 | const mapped_debug_names &map, |
3082 | struct dwarf2_section_info *section, | |
3083 | struct dwarf2_section_info *abbrev_section) | |
3084 | { | |
ed2dc618 SM |
3085 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3086 | ||
927aa2e7 JK |
3087 | dwarf2_read_section (objfile, section); |
3088 | dwarf2_read_section (objfile, abbrev_section); | |
3089 | ||
b2bdb8cf SM |
3090 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3091 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 JK |
3092 | |
3093 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3094 | ||
3095 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3096 | { | |
3097 | struct signatured_type *sig_type; | |
927aa2e7 | 3098 | void **slot; |
927aa2e7 JK |
3099 | |
3100 | sect_offset sect_off | |
3101 | = (sect_offset) (extract_unsigned_integer | |
3102 | (map.tu_table_reordered + i * map.offset_size, | |
3103 | map.offset_size, | |
3104 | map.dwarf5_byte_order)); | |
3105 | ||
3106 | comp_unit_head cu_header; | |
ed2dc618 SM |
3107 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
3108 | abbrev_section, | |
927aa2e7 JK |
3109 | section->buffer + to_underlying (sect_off), |
3110 | rcuh_kind::TYPE); | |
3111 | ||
3112 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3113 | struct signatured_type); | |
3114 | sig_type->signature = cu_header.signature; | |
3115 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3116 | sig_type->per_cu.is_debug_types = 1; | |
3117 | sig_type->per_cu.section = section; | |
3118 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 3119 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
3120 | sig_type->per_cu.v.quick |
3121 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3122 | struct dwarf2_per_cu_quick_data); | |
3123 | ||
3124 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3125 | *slot = sig_type; | |
3126 | ||
b2bdb8cf | 3127 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
3128 | } |
3129 | ||
3130 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3131 | } | |
3132 | ||
9291a0cd TT |
3133 | /* Read the address map data from the mapped index, and use it to |
3134 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3135 | |
9291a0cd | 3136 | static void |
ed2dc618 SM |
3137 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3138 | struct mapped_index *index) | |
9291a0cd | 3139 | { |
ed2dc618 | 3140 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 3141 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3142 | const gdb_byte *iter, *end; |
9291a0cd | 3143 | struct addrmap *mutable_map; |
9291a0cd TT |
3144 | CORE_ADDR baseaddr; |
3145 | ||
8268c778 PA |
3146 | auto_obstack temp_obstack; |
3147 | ||
9291a0cd TT |
3148 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3149 | ||
f00a2de2 PA |
3150 | iter = index->address_table.data (); |
3151 | end = iter + index->address_table.size (); | |
9291a0cd TT |
3152 | |
3153 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3154 | ||
3155 | while (iter < end) | |
3156 | { | |
3157 | ULONGEST hi, lo, cu_index; | |
3158 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3159 | iter += 8; | |
3160 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3161 | iter += 8; | |
3162 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3163 | iter += 4; | |
f652bce2 | 3164 | |
24a55014 | 3165 | if (lo > hi) |
f652bce2 | 3166 | { |
24a55014 DE |
3167 | complaint (&symfile_complaints, |
3168 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 3169 | hex_string (lo), hex_string (hi)); |
24a55014 | 3170 | continue; |
f652bce2 | 3171 | } |
24a55014 | 3172 | |
b76e467d | 3173 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 DE |
3174 | { |
3175 | complaint (&symfile_complaints, | |
3176 | _(".gdb_index address table has invalid CU number %u"), | |
3177 | (unsigned) cu_index); | |
24a55014 | 3178 | continue; |
f652bce2 | 3179 | } |
24a55014 | 3180 | |
3e29f34a MR |
3181 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
3182 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
ed2dc618 | 3183 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 3184 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
3185 | } |
3186 | ||
3187 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3188 | &objfile->objfile_obstack); | |
9291a0cd TT |
3189 | } |
3190 | ||
927aa2e7 JK |
3191 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3192 | populate the objfile's psymtabs_addrmap. */ | |
3193 | ||
3194 | static void | |
ed2dc618 | 3195 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3196 | struct dwarf2_section_info *section) |
3197 | { | |
ed2dc618 | 3198 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
3199 | bfd *abfd = objfile->obfd; |
3200 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3201 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
3202 | SECT_OFF_TEXT (objfile)); | |
3203 | ||
3204 | auto_obstack temp_obstack; | |
3205 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3206 | ||
3207 | std::unordered_map<sect_offset, | |
3208 | dwarf2_per_cu_data *, | |
3209 | gdb::hash_enum<sect_offset>> | |
3210 | debug_info_offset_to_per_cu; | |
b76e467d | 3211 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 3212 | { |
927aa2e7 JK |
3213 | const auto insertpair |
3214 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3215 | if (!insertpair.second) | |
3216 | { | |
3217 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
3218 | "debug_info_offset %s, ignoring .debug_aranges."), |
3219 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
3220 | return; |
3221 | } | |
3222 | } | |
3223 | ||
3224 | dwarf2_read_section (objfile, section); | |
3225 | ||
3226 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3227 | ||
3228 | const gdb_byte *addr = section->buffer; | |
3229 | ||
3230 | while (addr < section->buffer + section->size) | |
3231 | { | |
3232 | const gdb_byte *const entry_addr = addr; | |
3233 | unsigned int bytes_read; | |
3234 | ||
3235 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3236 | &bytes_read); | |
3237 | addr += bytes_read; | |
3238 | ||
3239 | const gdb_byte *const entry_end = addr + entry_length; | |
3240 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3241 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3242 | if (addr + entry_length > section->buffer + section->size) | |
3243 | { | |
3244 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3245 | "length %s exceeds section length %s, " | |
3246 | "ignoring .debug_aranges."), | |
3247 | objfile_name (objfile), entry_addr - section->buffer, | |
3248 | plongest (bytes_read + entry_length), | |
3249 | pulongest (section->size)); | |
3250 | return; | |
3251 | } | |
3252 | ||
3253 | /* The version number. */ | |
3254 | const uint16_t version = read_2_bytes (abfd, addr); | |
3255 | addr += 2; | |
3256 | if (version != 2) | |
3257 | { | |
3258 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3259 | "has unsupported version %d, ignoring .debug_aranges."), | |
3260 | objfile_name (objfile), entry_addr - section->buffer, | |
3261 | version); | |
3262 | return; | |
3263 | } | |
3264 | ||
3265 | const uint64_t debug_info_offset | |
3266 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3267 | addr += offset_size; | |
3268 | const auto per_cu_it | |
3269 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3270 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3271 | { | |
3272 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3273 | "debug_info_offset %s does not exists, " | |
3274 | "ignoring .debug_aranges."), | |
3275 | objfile_name (objfile), entry_addr - section->buffer, | |
3276 | pulongest (debug_info_offset)); | |
3277 | return; | |
3278 | } | |
3279 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3280 | ||
3281 | const uint8_t address_size = *addr++; | |
3282 | if (address_size < 1 || address_size > 8) | |
3283 | { | |
3284 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3285 | "address_size %u is invalid, ignoring .debug_aranges."), | |
3286 | objfile_name (objfile), entry_addr - section->buffer, | |
3287 | address_size); | |
3288 | return; | |
3289 | } | |
3290 | ||
3291 | const uint8_t segment_selector_size = *addr++; | |
3292 | if (segment_selector_size != 0) | |
3293 | { | |
3294 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3295 | "segment_selector_size %u is not supported, " | |
3296 | "ignoring .debug_aranges."), | |
3297 | objfile_name (objfile), entry_addr - section->buffer, | |
3298 | segment_selector_size); | |
3299 | return; | |
3300 | } | |
3301 | ||
3302 | /* Must pad to an alignment boundary that is twice the address | |
3303 | size. It is undocumented by the DWARF standard but GCC does | |
3304 | use it. */ | |
3305 | for (size_t padding = ((-(addr - section->buffer)) | |
3306 | & (2 * address_size - 1)); | |
3307 | padding > 0; padding--) | |
3308 | if (*addr++ != 0) | |
3309 | { | |
3310 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3311 | "padding is not zero, ignoring .debug_aranges."), | |
3312 | objfile_name (objfile), entry_addr - section->buffer); | |
3313 | return; | |
3314 | } | |
3315 | ||
3316 | for (;;) | |
3317 | { | |
3318 | if (addr + 2 * address_size > entry_end) | |
3319 | { | |
3320 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3321 | "address list is not properly terminated, " | |
3322 | "ignoring .debug_aranges."), | |
3323 | objfile_name (objfile), entry_addr - section->buffer); | |
3324 | return; | |
3325 | } | |
3326 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3327 | dwarf5_byte_order); | |
3328 | addr += address_size; | |
3329 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3330 | dwarf5_byte_order); | |
3331 | addr += address_size; | |
3332 | if (start == 0 && length == 0) | |
3333 | break; | |
3334 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3335 | { | |
3336 | /* Symbol was eliminated due to a COMDAT group. */ | |
3337 | continue; | |
3338 | } | |
3339 | ULONGEST end = start + length; | |
3340 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr); | |
3341 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr); | |
3342 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); | |
3343 | } | |
3344 | } | |
3345 | ||
3346 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3347 | &objfile->objfile_obstack); | |
3348 | } | |
3349 | ||
9291a0cd TT |
3350 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3351 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3352 | constant pool and return true. If NAME cannot be found, return |
3353 | false. */ | |
2fdf6df6 | 3354 | |
109483d9 | 3355 | static bool |
9291a0cd TT |
3356 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3357 | offset_type **vec_out) | |
3358 | { | |
0cf03b49 | 3359 | offset_type hash; |
9291a0cd | 3360 | offset_type slot, step; |
559a7a62 | 3361 | int (*cmp) (const char *, const char *); |
9291a0cd | 3362 | |
791afaa2 | 3363 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3364 | if (current_language->la_language == language_cplus |
45280282 IB |
3365 | || current_language->la_language == language_fortran |
3366 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3367 | { |
3368 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3369 | not contain any. */ | |
a8719064 | 3370 | |
72998fb3 | 3371 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3372 | { |
109483d9 | 3373 | without_params = cp_remove_params (name); |
0cf03b49 | 3374 | |
72998fb3 | 3375 | if (without_params != NULL) |
791afaa2 | 3376 | name = without_params.get (); |
0cf03b49 JK |
3377 | } |
3378 | } | |
3379 | ||
559a7a62 | 3380 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3381 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3382 | simulate our NAME being searched is also lowercased. */ |
3383 | hash = mapped_index_string_hash ((index->version == 4 | |
3384 | && case_sensitivity == case_sensitive_off | |
3385 | ? 5 : index->version), | |
3386 | name); | |
3387 | ||
f00a2de2 PA |
3388 | slot = hash & (index->symbol_table.size () - 1); |
3389 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3390 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3391 | |
3392 | for (;;) | |
3393 | { | |
9291a0cd | 3394 | const char *str; |
f00a2de2 PA |
3395 | |
3396 | const auto &bucket = index->symbol_table[slot]; | |
3397 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3398 | return false; |
9291a0cd | 3399 | |
f00a2de2 | 3400 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3401 | if (!cmp (name, str)) |
9291a0cd TT |
3402 | { |
3403 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3404 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3405 | return true; |
9291a0cd TT |
3406 | } |
3407 | ||
f00a2de2 | 3408 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3409 | } |
3410 | } | |
3411 | ||
2ec9a5e0 TT |
3412 | /* A helper function that reads the .gdb_index from SECTION and fills |
3413 | in MAP. FILENAME is the name of the file containing the section; | |
d33bc52e | 3414 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3415 | ok to use deprecated sections. |
3416 | ||
3417 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3418 | out parameters that are filled in with information about the CU and | |
3419 | TU lists in the section. | |
3420 | ||
3421 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3422 | |
d33bc52e | 3423 | static bool |
2ec9a5e0 TT |
3424 | read_index_from_section (struct objfile *objfile, |
3425 | const char *filename, | |
d33bc52e | 3426 | bool deprecated_ok, |
2ec9a5e0 TT |
3427 | struct dwarf2_section_info *section, |
3428 | struct mapped_index *map, | |
3429 | const gdb_byte **cu_list, | |
3430 | offset_type *cu_list_elements, | |
3431 | const gdb_byte **types_list, | |
3432 | offset_type *types_list_elements) | |
9291a0cd | 3433 | { |
948f8e3d | 3434 | const gdb_byte *addr; |
2ec9a5e0 | 3435 | offset_type version; |
b3b272e1 | 3436 | offset_type *metadata; |
1fd400ff | 3437 | int i; |
9291a0cd | 3438 | |
2ec9a5e0 | 3439 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3440 | return 0; |
82430852 JK |
3441 | |
3442 | /* Older elfutils strip versions could keep the section in the main | |
3443 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3444 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3445 | return 0; |
3446 | ||
2ec9a5e0 | 3447 | dwarf2_read_section (objfile, section); |
9291a0cd | 3448 | |
2ec9a5e0 | 3449 | addr = section->buffer; |
9291a0cd | 3450 | /* Version check. */ |
1fd400ff | 3451 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3452 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3453 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3454 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3455 | indices. */ |
831adc1f | 3456 | if (version < 4) |
481860b3 GB |
3457 | { |
3458 | static int warning_printed = 0; | |
3459 | if (!warning_printed) | |
3460 | { | |
3461 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3462 | filename); |
481860b3 GB |
3463 | warning_printed = 1; |
3464 | } | |
3465 | return 0; | |
3466 | } | |
3467 | /* Index version 4 uses a different hash function than index version | |
3468 | 5 and later. | |
3469 | ||
3470 | Versions earlier than 6 did not emit psymbols for inlined | |
3471 | functions. Using these files will cause GDB not to be able to | |
3472 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3473 | indices unless the user has done |
3474 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3475 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3476 | { |
3477 | static int warning_printed = 0; | |
3478 | if (!warning_printed) | |
3479 | { | |
e615022a DE |
3480 | warning (_("\ |
3481 | Skipping deprecated .gdb_index section in %s.\n\ | |
3482 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3483 | to use the section anyway."), | |
2ec9a5e0 | 3484 | filename); |
481860b3 GB |
3485 | warning_printed = 1; |
3486 | } | |
3487 | return 0; | |
3488 | } | |
796a7ff8 | 3489 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3490 | of the TU (for symbols coming from TUs), |
3491 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3492 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3493 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3494 | These are just performance bugs, and we can't distinguish gdb-generated | |
3495 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3496 | |
481860b3 | 3497 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3498 | longer backward compatible. */ |
796a7ff8 | 3499 | if (version > 8) |
594e8718 | 3500 | return 0; |
9291a0cd | 3501 | |
559a7a62 | 3502 | map->version = version; |
2ec9a5e0 | 3503 | map->total_size = section->size; |
9291a0cd TT |
3504 | |
3505 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3506 | |
3507 | i = 0; | |
2ec9a5e0 TT |
3508 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3509 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3510 | / 8); | |
1fd400ff TT |
3511 | ++i; |
3512 | ||
2ec9a5e0 TT |
3513 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3514 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3515 | - MAYBE_SWAP (metadata[i])) | |
3516 | / 8); | |
987d643c | 3517 | ++i; |
1fd400ff | 3518 | |
f00a2de2 PA |
3519 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3520 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3521 | map->address_table | |
3522 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3523 | ++i; |
3524 | ||
f00a2de2 PA |
3525 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3526 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3527 | map->symbol_table | |
3528 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3529 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3530 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3531 | |
f00a2de2 | 3532 | ++i; |
f9d83a0b | 3533 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3534 | |
2ec9a5e0 TT |
3535 | return 1; |
3536 | } | |
3537 | ||
927aa2e7 | 3538 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3539 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3540 | ||
3541 | static int | |
12359b5e | 3542 | dwarf2_read_index (struct dwarf2_per_objfile *dwarf2_per_objfile) |
2ec9a5e0 TT |
3543 | { |
3544 | struct mapped_index local_map, *map; | |
3545 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3546 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3547 | struct dwz_file *dwz; |
12359b5e | 3548 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3549 | |
4262abfb | 3550 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3551 | use_deprecated_index_sections, |
3552 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3553 | &cu_list, &cu_list_elements, | |
3554 | &types_list, &types_list_elements)) | |
3555 | return 0; | |
3556 | ||
0fefef59 | 3557 | /* Don't use the index if it's empty. */ |
f00a2de2 | 3558 | if (local_map.symbol_table.empty ()) |
0fefef59 DE |
3559 | return 0; |
3560 | ||
2ec9a5e0 TT |
3561 | /* If there is a .dwz file, read it so we can get its CU list as |
3562 | well. */ | |
ed2dc618 | 3563 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3564 | if (dwz != NULL) |
2ec9a5e0 | 3565 | { |
2ec9a5e0 TT |
3566 | struct mapped_index dwz_map; |
3567 | const gdb_byte *dwz_types_ignore; | |
3568 | offset_type dwz_types_elements_ignore; | |
3569 | ||
3570 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3571 | 1, | |
3572 | &dwz->gdb_index, &dwz_map, | |
3573 | &dwz_list, &dwz_list_elements, | |
3574 | &dwz_types_ignore, | |
3575 | &dwz_types_elements_ignore)) | |
3576 | { | |
3577 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3578 | bfd_get_filename (dwz->dwz_bfd)); | |
3579 | return 0; | |
3580 | } | |
3581 | } | |
3582 | ||
12359b5e SM |
3583 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3584 | dwz_list, dwz_list_elements); | |
1fd400ff | 3585 | |
8b70b953 TT |
3586 | if (types_list_elements) |
3587 | { | |
3588 | struct dwarf2_section_info *section; | |
3589 | ||
3590 | /* We can only handle a single .debug_types when we have an | |
3591 | index. */ | |
3592 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3593 | return 0; | |
3594 | ||
3595 | section = VEC_index (dwarf2_section_info_def, | |
3596 | dwarf2_per_objfile->types, 0); | |
3597 | ||
12359b5e SM |
3598 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3599 | types_list, types_list_elements); | |
8b70b953 | 3600 | } |
9291a0cd | 3601 | |
ed2dc618 | 3602 | create_addrmap_from_index (dwarf2_per_objfile, &local_map); |
2ec9a5e0 | 3603 | |
8d749320 | 3604 | map = XOBNEW (&objfile->objfile_obstack, struct mapped_index); |
3f563c84 | 3605 | map = new (map) mapped_index (); |
2ec9a5e0 | 3606 | *map = local_map; |
9291a0cd TT |
3607 | |
3608 | dwarf2_per_objfile->index_table = map; | |
3609 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 | 3610 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3611 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3612 | |
3613 | return 1; | |
3614 | } | |
3615 | ||
dee91e82 | 3616 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3617 | |
dee91e82 DE |
3618 | static void |
3619 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3620 | const gdb_byte *info_ptr, |
dee91e82 DE |
3621 | struct die_info *comp_unit_die, |
3622 | int has_children, | |
3623 | void *data) | |
9291a0cd | 3624 | { |
dee91e82 | 3625 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3626 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3627 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3628 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3629 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3630 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3631 | struct attribute *attr; |
dee91e82 | 3632 | int i; |
7b9f3c50 DE |
3633 | void **slot; |
3634 | struct quick_file_names *qfn; | |
9291a0cd | 3635 | |
0186c6a7 DE |
3636 | gdb_assert (! this_cu->is_debug_types); |
3637 | ||
07261596 TT |
3638 | /* Our callers never want to match partial units -- instead they |
3639 | will match the enclosing full CU. */ | |
3640 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3641 | { | |
3642 | this_cu->v.quick->no_file_data = 1; | |
3643 | return; | |
3644 | } | |
3645 | ||
0186c6a7 | 3646 | lh_cu = this_cu; |
7b9f3c50 | 3647 | slot = NULL; |
dee91e82 | 3648 | |
fff8551c | 3649 | line_header_up lh; |
9c541725 | 3650 | sect_offset line_offset {}; |
fff8551c | 3651 | |
dee91e82 | 3652 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
9291a0cd TT |
3653 | if (attr) |
3654 | { | |
7b9f3c50 DE |
3655 | struct quick_file_names find_entry; |
3656 | ||
9c541725 | 3657 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3658 | |
3659 | /* We may have already read in this line header (TU line header sharing). | |
3660 | If we have we're done. */ | |
094b34ac | 3661 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3662 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3663 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3664 | &find_entry, INSERT); | |
3665 | if (*slot != NULL) | |
3666 | { | |
9a3c8263 | 3667 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3668 | return; |
7b9f3c50 DE |
3669 | } |
3670 | ||
3019eac3 | 3671 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3672 | } |
3673 | if (lh == NULL) | |
3674 | { | |
094b34ac | 3675 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3676 | return; |
9291a0cd TT |
3677 | } |
3678 | ||
8d749320 | 3679 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3680 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3681 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3682 | gdb_assert (slot != NULL); |
3683 | *slot = qfn; | |
9291a0cd | 3684 | |
d721ba37 | 3685 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3686 | |
fff8551c | 3687 | qfn->num_file_names = lh->file_names.size (); |
8d749320 | 3688 | qfn->file_names = |
fff8551c PA |
3689 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->file_names.size ()); |
3690 | for (i = 0; i < lh->file_names.size (); ++i) | |
3691 | qfn->file_names[i] = file_full_name (i + 1, lh.get (), fnd.comp_dir); | |
7b9f3c50 | 3692 | qfn->real_names = NULL; |
9291a0cd | 3693 | |
094b34ac | 3694 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3695 | } |
3696 | ||
3697 | /* A helper for the "quick" functions which attempts to read the line | |
3698 | table for THIS_CU. */ | |
3699 | ||
3700 | static struct quick_file_names * | |
e4a48d9d | 3701 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3702 | { |
0186c6a7 DE |
3703 | /* This should never be called for TUs. */ |
3704 | gdb_assert (! this_cu->is_debug_types); | |
3705 | /* Nor type unit groups. */ | |
3706 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3707 | |
dee91e82 DE |
3708 | if (this_cu->v.quick->file_names != NULL) |
3709 | return this_cu->v.quick->file_names; | |
3710 | /* If we know there is no line data, no point in looking again. */ | |
3711 | if (this_cu->v.quick->no_file_data) | |
3712 | return NULL; | |
3713 | ||
0186c6a7 | 3714 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3715 | |
3716 | if (this_cu->v.quick->no_file_data) | |
3717 | return NULL; | |
3718 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3719 | } |
3720 | ||
3721 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3722 | real path for a given file name from the line table. */ |
2fdf6df6 | 3723 | |
9291a0cd | 3724 | static const char * |
7b9f3c50 DE |
3725 | dw2_get_real_path (struct objfile *objfile, |
3726 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3727 | { |
7b9f3c50 DE |
3728 | if (qfn->real_names == NULL) |
3729 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3730 | qfn->num_file_names, const char *); |
9291a0cd | 3731 | |
7b9f3c50 | 3732 | if (qfn->real_names[index] == NULL) |
14278e1f | 3733 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3734 | |
7b9f3c50 | 3735 | return qfn->real_names[index]; |
9291a0cd TT |
3736 | } |
3737 | ||
3738 | static struct symtab * | |
3739 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3740 | { | |
ed2dc618 SM |
3741 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3742 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3743 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
ed2dc618 | 3744 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu); |
ae2de4f8 | 3745 | |
43f3e411 DE |
3746 | if (cust == NULL) |
3747 | return NULL; | |
ed2dc618 | 3748 | |
43f3e411 | 3749 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3750 | } |
3751 | ||
7b9f3c50 DE |
3752 | /* Traversal function for dw2_forget_cached_source_info. */ |
3753 | ||
3754 | static int | |
3755 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3756 | { |
7b9f3c50 | 3757 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3758 | |
7b9f3c50 | 3759 | if (file_data->real_names) |
9291a0cd | 3760 | { |
7b9f3c50 | 3761 | int i; |
9291a0cd | 3762 | |
7b9f3c50 | 3763 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3764 | { |
7b9f3c50 DE |
3765 | xfree ((void*) file_data->real_names[i]); |
3766 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3767 | } |
3768 | } | |
7b9f3c50 DE |
3769 | |
3770 | return 1; | |
3771 | } | |
3772 | ||
3773 | static void | |
3774 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3775 | { | |
ed2dc618 SM |
3776 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3777 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
3778 | |
3779 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3780 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3781 | } |
3782 | ||
f8eba3c6 TT |
3783 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3784 | the symtabs and calls the iterator. */ | |
3785 | ||
3786 | static int | |
3787 | dw2_map_expand_apply (struct objfile *objfile, | |
3788 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3789 | const char *name, const char *real_path, |
14bc53a8 | 3790 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3791 | { |
43f3e411 | 3792 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3793 | |
3794 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3795 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3796 | return 0; |
3797 | ||
3798 | /* This may expand more than one symtab, and we want to iterate over | |
3799 | all of them. */ | |
a0f42c21 | 3800 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3801 | |
14bc53a8 PA |
3802 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3803 | last_made, callback); | |
f8eba3c6 TT |
3804 | } |
3805 | ||
3806 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3807 | ||
14bc53a8 PA |
3808 | static bool |
3809 | dw2_map_symtabs_matching_filename | |
3810 | (struct objfile *objfile, const char *name, const char *real_path, | |
3811 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3812 | { |
c011a4f4 | 3813 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3814 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3815 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3816 | |
848e3e78 DE |
3817 | /* The rule is CUs specify all the files, including those used by |
3818 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3819 | |
b76e467d | 3820 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3821 | { |
3d7bb9d9 | 3822 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3823 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3824 | continue; |
3825 | ||
b76e467d | 3826 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3827 | if (file_data == NULL) |
9291a0cd TT |
3828 | continue; |
3829 | ||
b76e467d | 3830 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3831 | { |
7b9f3c50 | 3832 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3833 | const char *this_real_name; |
9291a0cd | 3834 | |
af529f8f | 3835 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3836 | { |
f5b95b50 | 3837 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3838 | callback)) |
3839 | return true; | |
288e77a7 | 3840 | continue; |
4aac40c8 | 3841 | } |
9291a0cd | 3842 | |
c011a4f4 DE |
3843 | /* Before we invoke realpath, which can get expensive when many |
3844 | files are involved, do a quick comparison of the basenames. */ | |
3845 | if (! basenames_may_differ | |
3846 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3847 | continue; | |
3848 | ||
da235a7c JK |
3849 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3850 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3851 | { |
da235a7c | 3852 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3853 | callback)) |
3854 | return true; | |
288e77a7 | 3855 | continue; |
da235a7c | 3856 | } |
9291a0cd | 3857 | |
da235a7c JK |
3858 | if (real_path != NULL) |
3859 | { | |
af529f8f JK |
3860 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3861 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3862 | if (this_real_name != NULL |
af529f8f | 3863 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3864 | { |
f5b95b50 | 3865 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3866 | callback)) |
3867 | return true; | |
288e77a7 | 3868 | continue; |
9291a0cd TT |
3869 | } |
3870 | } | |
3871 | } | |
3872 | } | |
3873 | ||
14bc53a8 | 3874 | return false; |
9291a0cd TT |
3875 | } |
3876 | ||
da51c347 DE |
3877 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3878 | ||
3879 | struct dw2_symtab_iterator | |
9291a0cd | 3880 | { |
ed2dc618 SM |
3881 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3882 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
da51c347 DE |
3883 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ |
3884 | int want_specific_block; | |
3885 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3886 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3887 | int block_index; | |
3888 | /* The kind of symbol we're looking for. */ | |
3889 | domain_enum domain; | |
3890 | /* The list of CUs from the index entry of the symbol, | |
3891 | or NULL if not found. */ | |
3892 | offset_type *vec; | |
3893 | /* The next element in VEC to look at. */ | |
3894 | int next; | |
3895 | /* The number of elements in VEC, or zero if there is no match. */ | |
3896 | int length; | |
8943b874 DE |
3897 | /* Have we seen a global version of the symbol? |
3898 | If so we can ignore all further global instances. | |
3899 | This is to work around gold/15646, inefficient gold-generated | |
3900 | indices. */ | |
3901 | int global_seen; | |
da51c347 | 3902 | }; |
9291a0cd | 3903 | |
da51c347 DE |
3904 | /* Initialize the index symtab iterator ITER. |
3905 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3906 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3907 | |
9291a0cd | 3908 | static void |
da51c347 | 3909 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3910 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
da51c347 DE |
3911 | int want_specific_block, |
3912 | int block_index, | |
3913 | domain_enum domain, | |
3914 | const char *name) | |
3915 | { | |
ed2dc618 | 3916 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3917 | iter->want_specific_block = want_specific_block; |
3918 | iter->block_index = block_index; | |
3919 | iter->domain = domain; | |
3920 | iter->next = 0; | |
8943b874 | 3921 | iter->global_seen = 0; |
da51c347 | 3922 | |
ed2dc618 SM |
3923 | mapped_index *index = dwarf2_per_objfile->index_table; |
3924 | ||
3925 | /* index is NULL if OBJF_READNOW. */ | |
3926 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3927 | iter->length = MAYBE_SWAP (*iter->vec); |
3928 | else | |
3929 | { | |
3930 | iter->vec = NULL; | |
3931 | iter->length = 0; | |
3932 | } | |
3933 | } | |
3934 | ||
3935 | /* Return the next matching CU or NULL if there are no more. */ | |
3936 | ||
3937 | static struct dwarf2_per_cu_data * | |
3938 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3939 | { | |
ed2dc618 SM |
3940 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3941 | ||
da51c347 DE |
3942 | for ( ; iter->next < iter->length; ++iter->next) |
3943 | { | |
3944 | offset_type cu_index_and_attrs = | |
3945 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3946 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3947 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3948 | /* This value is only valid for index versions >= 7. */ | |
3949 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3950 | gdb_index_symbol_kind symbol_kind = | |
3951 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3952 | /* Only check the symbol attributes if they're present. | |
3953 | Indices prior to version 7 don't record them, | |
3954 | and indices >= 7 may elide them for certain symbols | |
3955 | (gold does this). */ | |
3956 | int attrs_valid = | |
ed2dc618 | 3957 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3958 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3959 | ||
3190f0c6 | 3960 | /* Don't crash on bad data. */ |
b76e467d | 3961 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3962 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 DE |
3963 | { |
3964 | complaint (&symfile_complaints, | |
3965 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3966 | " [in module %s]"), |
3967 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3968 | continue; |
3969 | } | |
3970 | ||
ff4c9fec | 3971 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 3972 | |
da51c347 | 3973 | /* Skip if already read in. */ |
43f3e411 | 3974 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3975 | continue; |
3976 | ||
8943b874 DE |
3977 | /* Check static vs global. */ |
3978 | if (attrs_valid) | |
3979 | { | |
3980 | if (iter->want_specific_block | |
3981 | && want_static != is_static) | |
3982 | continue; | |
3983 | /* Work around gold/15646. */ | |
3984 | if (!is_static && iter->global_seen) | |
3985 | continue; | |
3986 | if (!is_static) | |
3987 | iter->global_seen = 1; | |
3988 | } | |
da51c347 DE |
3989 | |
3990 | /* Only check the symbol's kind if it has one. */ | |
3991 | if (attrs_valid) | |
3992 | { | |
3993 | switch (iter->domain) | |
3994 | { | |
3995 | case VAR_DOMAIN: | |
3996 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3997 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3998 | /* Some types are also in VAR_DOMAIN. */ | |
3999 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4000 | continue; | |
4001 | break; | |
4002 | case STRUCT_DOMAIN: | |
4003 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4004 | continue; | |
4005 | break; | |
4006 | case LABEL_DOMAIN: | |
4007 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4008 | continue; | |
4009 | break; | |
4010 | default: | |
4011 | break; | |
4012 | } | |
4013 | } | |
4014 | ||
4015 | ++iter->next; | |
4016 | return per_cu; | |
4017 | } | |
4018 | ||
4019 | return NULL; | |
4020 | } | |
4021 | ||
43f3e411 | 4022 | static struct compunit_symtab * |
da51c347 DE |
4023 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
4024 | const char *name, domain_enum domain) | |
9291a0cd | 4025 | { |
43f3e411 | 4026 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
4027 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4028 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 4029 | |
b5ec771e PA |
4030 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4031 | ||
ed2dc618 SM |
4032 | struct dw2_symtab_iterator iter; |
4033 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4034 | |
ed2dc618 | 4035 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 1, block_index, domain, name); |
9291a0cd | 4036 | |
ed2dc618 SM |
4037 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4038 | { | |
4039 | struct symbol *sym, *with_opaque = NULL; | |
4040 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); | |
4041 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
4042 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
da51c347 | 4043 | |
ed2dc618 SM |
4044 | sym = block_find_symbol (block, name, domain, |
4045 | block_find_non_opaque_type_preferred, | |
4046 | &with_opaque); | |
b2e2f908 | 4047 | |
ed2dc618 SM |
4048 | /* Some caution must be observed with overloaded functions |
4049 | and methods, since the index will not contain any overload | |
4050 | information (but NAME might contain it). */ | |
da51c347 | 4051 | |
ed2dc618 SM |
4052 | if (sym != NULL |
4053 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
4054 | return stab; | |
4055 | if (with_opaque != NULL | |
4056 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
4057 | stab_best = stab; | |
da51c347 | 4058 | |
ed2dc618 | 4059 | /* Keep looking through other CUs. */ |
9291a0cd | 4060 | } |
9291a0cd | 4061 | |
da51c347 | 4062 | return stab_best; |
9291a0cd TT |
4063 | } |
4064 | ||
4065 | static void | |
4066 | dw2_print_stats (struct objfile *objfile) | |
4067 | { | |
ed2dc618 SM |
4068 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4069 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4070 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4071 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 4072 | int count = 0; |
9291a0cd | 4073 | |
ed2dc618 | 4074 | for (int i = 0; i < total; ++i) |
9291a0cd | 4075 | { |
ff4c9fec | 4076 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4077 | |
43f3e411 | 4078 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4079 | ++count; |
4080 | } | |
e4a48d9d | 4081 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4082 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4083 | } | |
4084 | ||
779bd270 DE |
4085 | /* This dumps minimal information about the index. |
4086 | It is called via "mt print objfiles". | |
4087 | One use is to verify .gdb_index has been loaded by the | |
4088 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4089 | ||
9291a0cd TT |
4090 | static void |
4091 | dw2_dump (struct objfile *objfile) | |
4092 | { | |
ed2dc618 SM |
4093 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4094 | = get_dwarf2_per_objfile (objfile); | |
4095 | ||
779bd270 DE |
4096 | gdb_assert (dwarf2_per_objfile->using_index); |
4097 | printf_filtered (".gdb_index:"); | |
4098 | if (dwarf2_per_objfile->index_table != NULL) | |
4099 | { | |
4100 | printf_filtered (" version %d\n", | |
4101 | dwarf2_per_objfile->index_table->version); | |
4102 | } | |
4103 | else | |
4104 | printf_filtered (" faked for \"readnow\"\n"); | |
4105 | printf_filtered ("\n"); | |
9291a0cd TT |
4106 | } |
4107 | ||
4108 | static void | |
3189cb12 DE |
4109 | dw2_relocate (struct objfile *objfile, |
4110 | const struct section_offsets *new_offsets, | |
4111 | const struct section_offsets *delta) | |
9291a0cd TT |
4112 | { |
4113 | /* There's nothing to relocate here. */ | |
4114 | } | |
4115 | ||
4116 | static void | |
4117 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4118 | const char *func_name) | |
4119 | { | |
ed2dc618 SM |
4120 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4121 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 4122 | |
ed2dc618 SM |
4123 | struct dw2_symtab_iterator iter; |
4124 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4125 | |
ed2dc618 SM |
4126 | /* Note: It doesn't matter what we pass for block_index here. */ |
4127 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
4128 | func_name); | |
da51c347 | 4129 | |
ed2dc618 SM |
4130 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4131 | dw2_instantiate_symtab (per_cu); | |
da51c347 | 4132 | |
9291a0cd TT |
4133 | } |
4134 | ||
4135 | static void | |
4136 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4137 | { | |
ed2dc618 SM |
4138 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4139 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4140 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4141 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 4142 | |
ed2dc618 | 4143 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 4144 | { |
ff4c9fec | 4145 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4146 | |
a0f42c21 | 4147 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
4148 | } |
4149 | } | |
4150 | ||
4151 | static void | |
652a8996 JK |
4152 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4153 | const char *fullname) | |
9291a0cd | 4154 | { |
ed2dc618 SM |
4155 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4156 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
4157 | |
4158 | /* We don't need to consider type units here. | |
4159 | This is only called for examining code, e.g. expand_line_sal. | |
4160 | There can be an order of magnitude (or more) more type units | |
4161 | than comp units, and we avoid them if we can. */ | |
4162 | ||
b76e467d | 4163 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 4164 | { |
3d7bb9d9 | 4165 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4166 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4167 | continue; |
4168 | ||
b76e467d | 4169 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4170 | if (file_data == NULL) |
9291a0cd TT |
4171 | continue; |
4172 | ||
b76e467d | 4173 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4174 | { |
652a8996 JK |
4175 | const char *this_fullname = file_data->file_names[j]; |
4176 | ||
4177 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4178 | { |
a0f42c21 | 4179 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
4180 | break; |
4181 | } | |
4182 | } | |
4183 | } | |
4184 | } | |
4185 | ||
9291a0cd | 4186 | static void |
ade7ed9e | 4187 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 4188 | const char * name, domain_enum domain, |
ade7ed9e | 4189 | int global, |
40658b94 PH |
4190 | int (*callback) (struct block *, |
4191 | struct symbol *, void *), | |
b5ec771e | 4192 | void *data, symbol_name_match_type match, |
2edb89d3 | 4193 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4194 | { |
40658b94 | 4195 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4196 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4197 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4198 | } |
4199 | ||
b5ec771e PA |
4200 | /* Symbol name matcher for .gdb_index names. |
4201 | ||
4202 | Symbol names in .gdb_index have a few particularities: | |
4203 | ||
4204 | - There's no indication of which is the language of each symbol. | |
4205 | ||
4206 | Since each language has its own symbol name matching algorithm, | |
4207 | and we don't know which language is the right one, we must match | |
3f563c84 PA |
4208 | each symbol against all languages. This would be a potential |
4209 | performance problem if it were not mitigated by the | |
4210 | mapped_index::name_components lookup table, which significantly | |
4211 | reduces the number of times we need to call into this matcher, | |
4212 | making it a non-issue. | |
b5ec771e PA |
4213 | |
4214 | - Symbol names in the index have no overload (parameter) | |
4215 | information. I.e., in C++, "foo(int)" and "foo(long)" both | |
4216 | appear as "foo" in the index, for example. | |
4217 | ||
4218 | This means that the lookup names passed to the symbol name | |
4219 | matcher functions must have no parameter information either | |
4220 | because (e.g.) symbol search name "foo" does not match | |
4221 | lookup-name "foo(int)" [while swapping search name for lookup | |
4222 | name would match]. | |
4223 | */ | |
4224 | class gdb_index_symbol_name_matcher | |
4225 | { | |
4226 | public: | |
4227 | /* Prepares the vector of comparison functions for LOOKUP_NAME. */ | |
4228 | gdb_index_symbol_name_matcher (const lookup_name_info &lookup_name); | |
4229 | ||
4230 | /* Walk all the matcher routines and match SYMBOL_NAME against them. | |
4231 | Returns true if any matcher matches. */ | |
4232 | bool matches (const char *symbol_name); | |
4233 | ||
4234 | private: | |
4235 | /* A reference to the lookup name we're matching against. */ | |
4236 | const lookup_name_info &m_lookup_name; | |
4237 | ||
4238 | /* A vector holding all the different symbol name matchers, for all | |
4239 | languages. */ | |
4240 | std::vector<symbol_name_matcher_ftype *> m_symbol_name_matcher_funcs; | |
4241 | }; | |
4242 | ||
4243 | gdb_index_symbol_name_matcher::gdb_index_symbol_name_matcher | |
4244 | (const lookup_name_info &lookup_name) | |
4245 | : m_lookup_name (lookup_name) | |
4246 | { | |
4247 | /* Prepare the vector of comparison functions upfront, to avoid | |
4248 | doing the same work for each symbol. Care is taken to avoid | |
4249 | matching with the same matcher more than once if/when multiple | |
4250 | languages use the same matcher function. */ | |
4251 | auto &matchers = m_symbol_name_matcher_funcs; | |
4252 | matchers.reserve (nr_languages); | |
4253 | ||
4254 | matchers.push_back (default_symbol_name_matcher); | |
4255 | ||
4256 | for (int i = 0; i < nr_languages; i++) | |
4257 | { | |
4258 | const language_defn *lang = language_def ((enum language) i); | |
c63d3e8d | 4259 | symbol_name_matcher_ftype *name_matcher |
618daa93 | 4260 | = get_symbol_name_matcher (lang, m_lookup_name); |
c63d3e8d PA |
4261 | |
4262 | /* Don't insert the same comparison routine more than once. | |
4263 | Note that we do this linear walk instead of a seemingly | |
4264 | cheaper sorted insert, or use a std::set or something like | |
4265 | that, because relative order of function addresses is not | |
4266 | stable. This is not a problem in practice because the number | |
4267 | of supported languages is low, and the cost here is tiny | |
4268 | compared to the number of searches we'll do afterwards using | |
4269 | this object. */ | |
4270 | if (name_matcher != default_symbol_name_matcher | |
4271 | && (std::find (matchers.begin (), matchers.end (), name_matcher) | |
4272 | == matchers.end ())) | |
4273 | matchers.push_back (name_matcher); | |
b5ec771e PA |
4274 | } |
4275 | } | |
4276 | ||
4277 | bool | |
4278 | gdb_index_symbol_name_matcher::matches (const char *symbol_name) | |
4279 | { | |
4280 | for (auto matches_name : m_symbol_name_matcher_funcs) | |
4281 | if (matches_name (symbol_name, m_lookup_name, NULL)) | |
4282 | return true; | |
4283 | ||
4284 | return false; | |
4285 | } | |
4286 | ||
e1ef7d7a PA |
4287 | /* Starting from a search name, return the string that finds the upper |
4288 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4289 | list. Returns the empty string to indicate that the upper bound is | |
4290 | the end of the list. */ | |
4291 | ||
4292 | static std::string | |
4293 | make_sort_after_prefix_name (const char *search_name) | |
4294 | { | |
4295 | /* When looking to complete "func", we find the upper bound of all | |
4296 | symbols that start with "func" by looking for where we'd insert | |
4297 | the closest string that would follow "func" in lexicographical | |
4298 | order. Usually, that's "func"-with-last-character-incremented, | |
4299 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4300 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4301 | Especially mind the 0xff character, which is a valid character in | |
4302 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4303 | rule out compilers allowing it in identifiers. Note that | |
4304 | conveniently, strcmp/strcasecmp are specified to compare | |
4305 | characters interpreted as unsigned char. So what we do is treat | |
4306 | the whole string as a base 256 number composed of a sequence of | |
4307 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4308 | to 0, and carries 1 to the following more-significant position. | |
4309 | If the very first character in SEARCH_NAME ends up incremented | |
4310 | and carries/overflows, then the upper bound is the end of the | |
4311 | list. The string after the empty string is also the empty | |
4312 | string. | |
4313 | ||
4314 | Some examples of this operation: | |
4315 | ||
4316 | SEARCH_NAME => "+1" RESULT | |
4317 | ||
4318 | "abc" => "abd" | |
4319 | "ab\xff" => "ac" | |
4320 | "\xff" "a" "\xff" => "\xff" "b" | |
4321 | "\xff" => "" | |
4322 | "\xff\xff" => "" | |
4323 | "" => "" | |
4324 | ||
4325 | Then, with these symbols for example: | |
4326 | ||
4327 | func | |
4328 | func1 | |
4329 | fund | |
4330 | ||
4331 | completing "func" looks for symbols between "func" and | |
4332 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4333 | which finds "func" and "func1", but not "fund". | |
4334 | ||
4335 | And with: | |
4336 | ||
4337 | funcÿ (Latin1 'ÿ' [0xff]) | |
4338 | funcÿ1 | |
4339 | fund | |
4340 | ||
4341 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4342 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4343 | ||
4344 | And with: | |
4345 | ||
4346 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4347 | ÿÿ1 | |
4348 | ||
4349 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4350 | the end of the list. | |
4351 | */ | |
4352 | std::string after = search_name; | |
4353 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4354 | after.pop_back (); | |
4355 | if (!after.empty ()) | |
4356 | after.back () = (unsigned char) after.back () + 1; | |
4357 | return after; | |
4358 | } | |
4359 | ||
5c58de74 | 4360 | /* See declaration. */ |
61d96d7e | 4361 | |
5c58de74 PA |
4362 | std::pair<std::vector<name_component>::const_iterator, |
4363 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4364 | mapped_index_base::find_name_components_bounds |
5c58de74 | 4365 | (const lookup_name_info &lookup_name_without_params) const |
3f563c84 | 4366 | { |
5c58de74 PA |
4367 | auto *name_cmp |
4368 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 PA |
4369 | |
4370 | const char *cplus | |
c62446b1 | 4371 | = lookup_name_without_params.cplus ().lookup_name ().c_str (); |
9291a0cd | 4372 | |
3f563c84 PA |
4373 | /* Comparison function object for lower_bound that matches against a |
4374 | given symbol name. */ | |
4375 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4376 | const char *name) | |
4377 | { | |
5c58de74 | 4378 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4379 | const char *elem_name = elem_qualified + elem.name_offset; |
4380 | return name_cmp (elem_name, name) < 0; | |
4381 | }; | |
4382 | ||
4383 | /* Comparison function object for upper_bound that matches against a | |
4384 | given symbol name. */ | |
4385 | auto lookup_compare_upper = [&] (const char *name, | |
4386 | const name_component &elem) | |
4387 | { | |
5c58de74 | 4388 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4389 | const char *elem_name = elem_qualified + elem.name_offset; |
4390 | return name_cmp (name, elem_name) < 0; | |
4391 | }; | |
4392 | ||
5c58de74 PA |
4393 | auto begin = this->name_components.begin (); |
4394 | auto end = this->name_components.end (); | |
3f563c84 PA |
4395 | |
4396 | /* Find the lower bound. */ | |
4397 | auto lower = [&] () | |
4398 | { | |
5c58de74 | 4399 | if (lookup_name_without_params.completion_mode () && cplus[0] == '\0') |
3f563c84 PA |
4400 | return begin; |
4401 | else | |
4402 | return std::lower_bound (begin, end, cplus, lookup_compare_lower); | |
4403 | } (); | |
4404 | ||
4405 | /* Find the upper bound. */ | |
4406 | auto upper = [&] () | |
4407 | { | |
5c58de74 | 4408 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4409 | { |
e1ef7d7a PA |
4410 | /* In completion mode, we want UPPER to point past all |
4411 | symbols names that have the same prefix. I.e., with | |
4412 | these symbols, and completing "func": | |
4413 | ||
4414 | function << lower bound | |
4415 | function1 | |
4416 | other_function << upper bound | |
4417 | ||
4418 | We find the upper bound by looking for the insertion | |
4419 | point of "func"-with-last-character-incremented, | |
4420 | i.e. "fund". */ | |
4421 | std::string after = make_sort_after_prefix_name (cplus); | |
4422 | if (after.empty ()) | |
3f563c84 | 4423 | return end; |
e6b2f5ef PA |
4424 | return std::lower_bound (lower, end, after.c_str (), |
4425 | lookup_compare_lower); | |
3f563c84 PA |
4426 | } |
4427 | else | |
4428 | return std::upper_bound (lower, end, cplus, lookup_compare_upper); | |
4429 | } (); | |
4430 | ||
5c58de74 PA |
4431 | return {lower, upper}; |
4432 | } | |
4433 | ||
4434 | /* See declaration. */ | |
4435 | ||
4436 | void | |
44ed8f3e | 4437 | mapped_index_base::build_name_components () |
5c58de74 PA |
4438 | { |
4439 | if (!this->name_components.empty ()) | |
4440 | return; | |
4441 | ||
4442 | this->name_components_casing = case_sensitivity; | |
4443 | auto *name_cmp | |
4444 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4445 | ||
4446 | /* The code below only knows how to break apart components of C++ | |
4447 | symbol names (and other languages that use '::' as | |
4448 | namespace/module separator). If we add support for wild matching | |
4449 | to some language that uses some other operator (E.g., Ada, Go and | |
4450 | D use '.'), then we'll need to try splitting the symbol name | |
4451 | according to that language too. Note that Ada does support wild | |
4452 | matching, but doesn't currently support .gdb_index. */ | |
44ed8f3e PA |
4453 | auto count = this->symbol_name_count (); |
4454 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4455 | { |
44ed8f3e | 4456 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4457 | continue; |
4458 | ||
4459 | const char *name = this->symbol_name_at (idx); | |
4460 | ||
4461 | /* Add each name component to the name component table. */ | |
4462 | unsigned int previous_len = 0; | |
4463 | for (unsigned int current_len = cp_find_first_component (name); | |
4464 | name[current_len] != '\0'; | |
4465 | current_len += cp_find_first_component (name + current_len)) | |
4466 | { | |
4467 | gdb_assert (name[current_len] == ':'); | |
4468 | this->name_components.push_back ({previous_len, idx}); | |
4469 | /* Skip the '::'. */ | |
4470 | current_len += 2; | |
4471 | previous_len = current_len; | |
4472 | } | |
4473 | this->name_components.push_back ({previous_len, idx}); | |
4474 | } | |
4475 | ||
4476 | /* Sort name_components elements by name. */ | |
4477 | auto name_comp_compare = [&] (const name_component &left, | |
4478 | const name_component &right) | |
4479 | { | |
4480 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4481 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4482 | ||
4483 | const char *left_name = left_qualified + left.name_offset; | |
4484 | const char *right_name = right_qualified + right.name_offset; | |
4485 | ||
4486 | return name_cmp (left_name, right_name) < 0; | |
4487 | }; | |
4488 | ||
4489 | std::sort (this->name_components.begin (), | |
4490 | this->name_components.end (), | |
4491 | name_comp_compare); | |
4492 | } | |
4493 | ||
4494 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4495 | mapped_index_base instead of the containing objfile. This is split |
4496 | to a separate function in order to be able to unit test the | |
4497 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4498 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4499 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4500 | |
4501 | static void | |
4502 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4503 | (mapped_index_base &index, |
5c58de74 PA |
4504 | const lookup_name_info &lookup_name_in, |
4505 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4506 | enum search_domain kind, | |
4507 | gdb::function_view<void (offset_type)> match_callback) | |
4508 | { | |
4509 | lookup_name_info lookup_name_without_params | |
4510 | = lookup_name_in.make_ignore_params (); | |
4511 | gdb_index_symbol_name_matcher lookup_name_matcher | |
4512 | (lookup_name_without_params); | |
4513 | ||
4514 | /* Build the symbol name component sorted vector, if we haven't | |
4515 | yet. */ | |
4516 | index.build_name_components (); | |
4517 | ||
4518 | auto bounds = index.find_name_components_bounds (lookup_name_without_params); | |
4519 | ||
3f563c84 PA |
4520 | /* Now for each symbol name in range, check to see if we have a name |
4521 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4522 | ||
4523 | /* The same symbol may appear more than once in the range though. | |
4524 | E.g., if we're looking for symbols that complete "w", and we have | |
4525 | a symbol named "w1::w2", we'll find the two name components for | |
4526 | that same symbol in the range. To be sure we only call the | |
4527 | callback once per symbol, we first collect the symbol name | |
4528 | indexes that matched in a temporary vector and ignore | |
4529 | duplicates. */ | |
4530 | std::vector<offset_type> matches; | |
5c58de74 | 4531 | matches.reserve (std::distance (bounds.first, bounds.second)); |
3f563c84 | 4532 | |
5c58de74 | 4533 | for (; bounds.first != bounds.second; ++bounds.first) |
3f563c84 | 4534 | { |
5c58de74 | 4535 | const char *qualified = index.symbol_name_at (bounds.first->idx); |
3f563c84 PA |
4536 | |
4537 | if (!lookup_name_matcher.matches (qualified) | |
4538 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
9291a0cd TT |
4539 | continue; |
4540 | ||
5c58de74 | 4541 | matches.push_back (bounds.first->idx); |
3f563c84 PA |
4542 | } |
4543 | ||
4544 | std::sort (matches.begin (), matches.end ()); | |
4545 | ||
4546 | /* Finally call the callback, once per match. */ | |
4547 | ULONGEST prev = -1; | |
4548 | for (offset_type idx : matches) | |
4549 | { | |
4550 | if (prev != idx) | |
4551 | { | |
4552 | match_callback (idx); | |
4553 | prev = idx; | |
4554 | } | |
4555 | } | |
4556 | ||
4557 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4558 | (offset_type)-1 are both possible values. */ | |
4559 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4560 | } | |
4561 | ||
c62446b1 PA |
4562 | #if GDB_SELF_TEST |
4563 | ||
4564 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4565 | ||
a3c5fafd PA |
4566 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4567 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4568 | mapped_index_base interface. Builds an index from the symbol list | |
4569 | passed as parameter to the constructor. */ | |
4570 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4571 | { |
4572 | public: | |
a3c5fafd PA |
4573 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4574 | : m_symbol_table (symbols) | |
c62446b1 PA |
4575 | {} |
4576 | ||
a3c5fafd | 4577 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4578 | |
a3c5fafd | 4579 | /* Return the number of names in the symbol table. */ |
632e107b | 4580 | size_t symbol_name_count () const override |
c62446b1 | 4581 | { |
a3c5fafd | 4582 | return m_symbol_table.size (); |
c62446b1 PA |
4583 | } |
4584 | ||
a3c5fafd | 4585 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4586 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4587 | { |
4588 | return m_symbol_table[idx]; | |
4589 | } | |
c62446b1 | 4590 | |
a3c5fafd PA |
4591 | private: |
4592 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4593 | }; |
4594 | ||
4595 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4596 | string, to pass to print routines. */ | |
4597 | ||
4598 | static const char * | |
4599 | string_or_null (const char *str) | |
4600 | { | |
4601 | return str != NULL ? str : "<null>"; | |
4602 | } | |
4603 | ||
4604 | /* Check if a lookup_name_info built from | |
4605 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4606 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4607 | matching order. If no match expected, then an empty list is | |
4608 | specified. Returns true on success. On failure prints a warning | |
4609 | indicating the file:line that failed, and returns false. */ | |
4610 | ||
4611 | static bool | |
4612 | check_match (const char *file, int line, | |
4613 | mock_mapped_index &mock_index, | |
4614 | const char *name, symbol_name_match_type match_type, | |
4615 | bool completion_mode, | |
4616 | std::initializer_list<const char *> expected_list) | |
4617 | { | |
4618 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4619 | ||
4620 | bool matched = true; | |
4621 | ||
4622 | auto mismatch = [&] (const char *expected_str, | |
4623 | const char *got) | |
4624 | { | |
4625 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4626 | "expected=\"%s\", got=\"%s\"\n"), | |
4627 | file, line, | |
4628 | (match_type == symbol_name_match_type::FULL | |
4629 | ? "FULL" : "WILD"), | |
4630 | name, string_or_null (expected_str), string_or_null (got)); | |
4631 | matched = false; | |
4632 | }; | |
4633 | ||
4634 | auto expected_it = expected_list.begin (); | |
4635 | auto expected_end = expected_list.end (); | |
4636 | ||
a3c5fafd | 4637 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4638 | NULL, ALL_DOMAIN, |
4639 | [&] (offset_type idx) | |
4640 | { | |
a3c5fafd | 4641 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4642 | const char *expected_str |
4643 | = expected_it == expected_end ? NULL : *expected_it++; | |
4644 | ||
4645 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4646 | mismatch (expected_str, matched_name); | |
4647 | }); | |
4648 | ||
4649 | const char *expected_str | |
4650 | = expected_it == expected_end ? NULL : *expected_it++; | |
4651 | if (expected_str != NULL) | |
4652 | mismatch (expected_str, NULL); | |
4653 | ||
4654 | return matched; | |
4655 | } | |
4656 | ||
4657 | /* The symbols added to the mock mapped_index for testing (in | |
4658 | canonical form). */ | |
4659 | static const char *test_symbols[] = { | |
4660 | "function", | |
4661 | "std::bar", | |
4662 | "std::zfunction", | |
4663 | "std::zfunction2", | |
4664 | "w1::w2", | |
4665 | "ns::foo<char*>", | |
4666 | "ns::foo<int>", | |
4667 | "ns::foo<long>", | |
a20714ff PA |
4668 | "ns2::tmpl<int>::foo2", |
4669 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4670 | |
e1ef7d7a PA |
4671 | /* These are used to check that the increment-last-char in the |
4672 | matching algorithm for completion doesn't match "t1_fund" when | |
4673 | completing "t1_func". */ | |
4674 | "t1_func", | |
4675 | "t1_func1", | |
4676 | "t1_fund", | |
4677 | "t1_fund1", | |
4678 | ||
4679 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4680 | cp-name-parser understands this as a single identifier ("função" | |
4681 | is "function" in PT). */ | |
4682 | u8"u8função", | |
4683 | ||
4684 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4685 | "yfunc\377", | |
4686 | ||
4687 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4688 | "\377", | |
4689 | "\377\377123", | |
4690 | ||
c62446b1 PA |
4691 | /* A name with all sorts of complications. Starts with "z" to make |
4692 | it easier for the completion tests below. */ | |
4693 | #define Z_SYM_NAME \ | |
4694 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4695 | "::tuple<(anonymous namespace)::ui*, " \ | |
4696 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4697 | ||
4698 | Z_SYM_NAME | |
4699 | }; | |
4700 | ||
a3c5fafd PA |
4701 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4702 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4703 | in completion mode. */ | |
5c58de74 PA |
4704 | |
4705 | static bool | |
a3c5fafd | 4706 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4707 | const char *search_name, |
4708 | gdb::array_view<const char *> expected_syms) | |
4709 | { | |
4710 | lookup_name_info lookup_name (search_name, | |
4711 | symbol_name_match_type::FULL, true); | |
4712 | ||
4713 | auto bounds = index.find_name_components_bounds (lookup_name); | |
4714 | ||
4715 | size_t distance = std::distance (bounds.first, bounds.second); | |
4716 | if (distance != expected_syms.size ()) | |
4717 | return false; | |
4718 | ||
4719 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4720 | { | |
4721 | auto nc_elem = bounds.first + exp_elem; | |
4722 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4723 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4724 | return false; | |
4725 | } | |
4726 | ||
4727 | return true; | |
4728 | } | |
4729 | ||
4730 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4731 | method. */ | |
4732 | ||
c62446b1 | 4733 | static void |
5c58de74 PA |
4734 | test_mapped_index_find_name_component_bounds () |
4735 | { | |
4736 | mock_mapped_index mock_index (test_symbols); | |
4737 | ||
a3c5fafd | 4738 | mock_index.build_name_components (); |
5c58de74 PA |
4739 | |
4740 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4741 | method in completion mode. */ | |
4742 | { | |
4743 | static const char *expected_syms[] = { | |
4744 | "t1_func", | |
4745 | "t1_func1", | |
5c58de74 PA |
4746 | }; |
4747 | ||
a3c5fafd | 4748 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4749 | "t1_func", expected_syms)); |
4750 | } | |
4751 | ||
4752 | /* Check that the increment-last-char in the name matching algorithm | |
4753 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4754 | { | |
4755 | static const char *expected_syms1[] = { | |
4756 | "\377", | |
4757 | "\377\377123", | |
4758 | }; | |
a3c5fafd | 4759 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4760 | "\377", expected_syms1)); |
4761 | ||
4762 | static const char *expected_syms2[] = { | |
4763 | "\377\377123", | |
4764 | }; | |
a3c5fafd | 4765 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4766 | "\377\377", expected_syms2)); |
4767 | } | |
4768 | } | |
4769 | ||
4770 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4771 | ||
4772 | static void | |
4773 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4774 | { |
4775 | mock_mapped_index mock_index (test_symbols); | |
4776 | ||
4777 | /* We let all tests run until the end even if some fails, for debug | |
4778 | convenience. */ | |
4779 | bool any_mismatch = false; | |
4780 | ||
4781 | /* Create the expected symbols list (an initializer_list). Needed | |
4782 | because lists have commas, and we need to pass them to CHECK, | |
4783 | which is a macro. */ | |
4784 | #define EXPECT(...) { __VA_ARGS__ } | |
4785 | ||
4786 | /* Wrapper for check_match that passes down the current | |
4787 | __FILE__/__LINE__. */ | |
4788 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4789 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4790 | mock_index, \ | |
4791 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4792 | EXPECTED_LIST) | |
4793 | ||
4794 | /* Identity checks. */ | |
4795 | for (const char *sym : test_symbols) | |
4796 | { | |
4797 | /* Should be able to match all existing symbols. */ | |
4798 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4799 | EXPECT (sym)); | |
4800 | ||
4801 | /* Should be able to match all existing symbols with | |
4802 | parameters. */ | |
4803 | std::string with_params = std::string (sym) + "(int)"; | |
4804 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4805 | EXPECT (sym)); | |
4806 | ||
4807 | /* Should be able to match all existing symbols with | |
4808 | parameters and qualifiers. */ | |
4809 | with_params = std::string (sym) + " ( int ) const"; | |
4810 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4811 | EXPECT (sym)); | |
4812 | ||
4813 | /* This should really find sym, but cp-name-parser.y doesn't | |
4814 | know about lvalue/rvalue qualifiers yet. */ | |
4815 | with_params = std::string (sym) + " ( int ) &&"; | |
4816 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4817 | {}); | |
4818 | } | |
4819 | ||
e1ef7d7a PA |
4820 | /* Check that the name matching algorithm for completion doesn't get |
4821 | confused with Latin1 'ÿ' / 0xff. */ | |
4822 | { | |
4823 | static const char str[] = "\377"; | |
4824 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4825 | EXPECT ("\377", "\377\377123")); | |
4826 | } | |
4827 | ||
4828 | /* Check that the increment-last-char in the matching algorithm for | |
4829 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4830 | { | |
4831 | static const char str[] = "t1_func"; | |
4832 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4833 | EXPECT ("t1_func", "t1_func1")); | |
4834 | } | |
4835 | ||
c62446b1 PA |
4836 | /* Check that completion mode works at each prefix of the expected |
4837 | symbol name. */ | |
4838 | { | |
4839 | static const char str[] = "function(int)"; | |
4840 | size_t len = strlen (str); | |
4841 | std::string lookup; | |
4842 | ||
4843 | for (size_t i = 1; i < len; i++) | |
4844 | { | |
4845 | lookup.assign (str, i); | |
4846 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4847 | EXPECT ("function")); | |
4848 | } | |
4849 | } | |
4850 | ||
4851 | /* While "w" is a prefix of both components, the match function | |
4852 | should still only be called once. */ | |
4853 | { | |
4854 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4855 | EXPECT ("w1::w2")); | |
a20714ff PA |
4856 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4857 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4858 | } |
4859 | ||
4860 | /* Same, with a "complicated" symbol. */ | |
4861 | { | |
4862 | static const char str[] = Z_SYM_NAME; | |
4863 | size_t len = strlen (str); | |
4864 | std::string lookup; | |
4865 | ||
4866 | for (size_t i = 1; i < len; i++) | |
4867 | { | |
4868 | lookup.assign (str, i); | |
4869 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4870 | EXPECT (Z_SYM_NAME)); | |
4871 | } | |
4872 | } | |
4873 | ||
4874 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4875 | { | |
4876 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4877 | {}); | |
4878 | } | |
4879 | ||
4880 | /* A complete symbol with parameters matches any overload, since the | |
4881 | index has no overload info. */ | |
4882 | { | |
4883 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4884 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4885 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4886 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4887 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4888 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4889 | } |
4890 | ||
4891 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4892 | template argument list. */ | |
4893 | { | |
4894 | static const char expected[] = "ns::foo<int>"; | |
4895 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4896 | EXPECT (expected)); | |
a20714ff PA |
4897 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4898 | EXPECT (expected)); | |
c62446b1 PA |
4899 | } |
4900 | ||
4901 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4902 | template argument list that includes a pointer. */ | |
4903 | { | |
4904 | static const char expected[] = "ns::foo<char*>"; | |
4905 | /* Try both completion and non-completion modes. */ | |
4906 | static const bool completion_mode[2] = {false, true}; | |
4907 | for (size_t i = 0; i < 2; i++) | |
4908 | { | |
4909 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4910 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4911 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4912 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4913 | |
4914 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4915 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4916 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4917 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4918 | } |
4919 | } | |
4920 | ||
4921 | { | |
4922 | /* Check method qualifiers are ignored. */ | |
4923 | static const char expected[] = "ns::foo<char*>"; | |
4924 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4925 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4926 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4927 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4928 | CHECK_MATCH ("foo < char * > ( int ) const", |
4929 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4930 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4931 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4932 | } |
4933 | ||
4934 | /* Test lookup names that don't match anything. */ | |
4935 | { | |
a20714ff PA |
4936 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4937 | {}); | |
4938 | ||
c62446b1 PA |
4939 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4940 | {}); | |
4941 | } | |
4942 | ||
a20714ff PA |
4943 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4944 | which should not be confused with a parameter list. */ | |
4945 | { | |
4946 | static const char *syms[] = { | |
4947 | "A::B::C", | |
4948 | "B::C", | |
4949 | "C", | |
4950 | "A :: B :: C ( int )", | |
4951 | "B :: C ( int )", | |
4952 | "C ( int )", | |
4953 | }; | |
4954 | ||
4955 | for (const char *s : syms) | |
4956 | { | |
4957 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4958 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4959 | } | |
4960 | } | |
4961 | ||
4962 | { | |
4963 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4964 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4965 | EXPECT (expected)); | |
4966 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4967 | EXPECT (expected)); | |
4968 | } | |
4969 | ||
c62446b1 PA |
4970 | SELF_CHECK (!any_mismatch); |
4971 | ||
4972 | #undef EXPECT | |
4973 | #undef CHECK_MATCH | |
4974 | } | |
4975 | ||
5c58de74 PA |
4976 | static void |
4977 | run_test () | |
4978 | { | |
4979 | test_mapped_index_find_name_component_bounds (); | |
4980 | test_dw2_expand_symtabs_matching_symbol (); | |
4981 | } | |
4982 | ||
c62446b1 PA |
4983 | }} // namespace selftests::dw2_expand_symtabs_matching |
4984 | ||
4985 | #endif /* GDB_SELF_TEST */ | |
4986 | ||
4b514bc8 JK |
4987 | /* If FILE_MATCHER is NULL or if PER_CU has |
4988 | dwarf2_per_cu_quick_data::MARK set (see | |
4989 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4990 | EXPANSION_NOTIFY on it. */ | |
4991 | ||
4992 | static void | |
4993 | dw2_expand_symtabs_matching_one | |
4994 | (struct dwarf2_per_cu_data *per_cu, | |
4995 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4996 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4997 | { | |
4998 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4999 | { | |
5000 | bool symtab_was_null | |
5001 | = (per_cu->v.quick->compunit_symtab == NULL); | |
5002 | ||
5003 | dw2_instantiate_symtab (per_cu); | |
5004 | ||
5005 | if (expansion_notify != NULL | |
5006 | && symtab_was_null | |
5007 | && per_cu->v.quick->compunit_symtab != NULL) | |
5008 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
5009 | } | |
5010 | } | |
5011 | ||
3f563c84 PA |
5012 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
5013 | matched, to expand corresponding CUs that were marked. IDX is the | |
5014 | index of the symbol name that matched. */ | |
5015 | ||
5016 | static void | |
5017 | dw2_expand_marked_cus | |
ed2dc618 | 5018 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
5019 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
5020 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5021 | search_domain kind) | |
5022 | { | |
3f563c84 PA |
5023 | offset_type *vec, vec_len, vec_idx; |
5024 | bool global_seen = false; | |
ed2dc618 | 5025 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 5026 | |
61920122 | 5027 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 5028 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
5029 | vec_len = MAYBE_SWAP (vec[0]); |
5030 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5031 | { | |
61920122 PA |
5032 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
5033 | /* This value is only valid for index versions >= 7. */ | |
5034 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5035 | gdb_index_symbol_kind symbol_kind = | |
5036 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5037 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5038 | /* Only check the symbol attributes if they're present. | |
5039 | Indices prior to version 7 don't record them, | |
5040 | and indices >= 7 may elide them for certain symbols | |
5041 | (gold does this). */ | |
5042 | int attrs_valid = | |
5043 | (index.version >= 7 | |
5044 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5045 | ||
5046 | /* Work around gold/15646. */ | |
5047 | if (attrs_valid) | |
9291a0cd | 5048 | { |
61920122 PA |
5049 | if (!is_static && global_seen) |
5050 | continue; | |
5051 | if (!is_static) | |
5052 | global_seen = true; | |
5053 | } | |
3190f0c6 | 5054 | |
61920122 PA |
5055 | /* Only check the symbol's kind if it has one. */ |
5056 | if (attrs_valid) | |
5057 | { | |
5058 | switch (kind) | |
8943b874 | 5059 | { |
61920122 PA |
5060 | case VARIABLES_DOMAIN: |
5061 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5062 | continue; | |
5063 | break; | |
5064 | case FUNCTIONS_DOMAIN: | |
5065 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5066 | continue; |
61920122 PA |
5067 | break; |
5068 | case TYPES_DOMAIN: | |
5069 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5070 | continue; | |
5071 | break; | |
5072 | default: | |
5073 | break; | |
8943b874 | 5074 | } |
61920122 | 5075 | } |
8943b874 | 5076 | |
61920122 | 5077 | /* Don't crash on bad data. */ |
b76e467d | 5078 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5079 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 PA |
5080 | { |
5081 | complaint (&symfile_complaints, | |
5082 | _(".gdb_index entry has bad CU index" | |
ed2dc618 SM |
5083 | " [in module %s]"), |
5084 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
5085 | continue; |
5086 | } | |
5087 | ||
ff4c9fec | 5088 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
5089 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5090 | expansion_notify); | |
61920122 PA |
5091 | } |
5092 | } | |
5093 | ||
4b514bc8 JK |
5094 | /* If FILE_MATCHER is non-NULL, set all the |
5095 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5096 | that match FILE_MATCHER. */ | |
5097 | ||
61920122 | 5098 | static void |
4b514bc8 | 5099 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
5100 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5101 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5102 | { |
4b514bc8 | 5103 | if (file_matcher == NULL) |
61920122 PA |
5104 | return; |
5105 | ||
4b514bc8 JK |
5106 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5107 | ||
5108 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5109 | htab_eq_pointer, | |
5110 | NULL, xcalloc, xfree)); | |
5111 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5112 | htab_eq_pointer, |
5113 | NULL, xcalloc, xfree)); | |
61920122 | 5114 | |
4b514bc8 JK |
5115 | /* The rule is CUs specify all the files, including those used by |
5116 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5117 | |
b76e467d | 5118 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5119 | { |
927aa2e7 JK |
5120 | QUIT; |
5121 | ||
5122 | per_cu->v.quick->mark = 0; | |
5123 | ||
5124 | /* We only need to look at symtabs not already expanded. */ | |
5125 | if (per_cu->v.quick->compunit_symtab) | |
5126 | continue; | |
5127 | ||
b76e467d | 5128 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5129 | if (file_data == NULL) |
5130 | continue; | |
5131 | ||
5132 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5133 | continue; | |
5134 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5135 | { | |
5136 | per_cu->v.quick->mark = 1; | |
5137 | continue; | |
5138 | } | |
5139 | ||
b76e467d | 5140 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
5141 | { |
5142 | const char *this_real_name; | |
5143 | ||
5144 | if (file_matcher (file_data->file_names[j], false)) | |
5145 | { | |
5146 | per_cu->v.quick->mark = 1; | |
5147 | break; | |
5148 | } | |
5149 | ||
5150 | /* Before we invoke realpath, which can get expensive when many | |
5151 | files are involved, do a quick comparison of the basenames. */ | |
5152 | if (!basenames_may_differ | |
5153 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5154 | true)) | |
5155 | continue; | |
5156 | ||
5157 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5158 | if (file_matcher (this_real_name, false)) | |
5159 | { | |
5160 | per_cu->v.quick->mark = 1; | |
5161 | break; | |
5162 | } | |
5163 | } | |
5164 | ||
b76e467d SM |
5165 | void **slot = htab_find_slot (per_cu->v.quick->mark |
5166 | ? visited_found.get () | |
5167 | : visited_not_found.get (), | |
5168 | file_data, INSERT); | |
927aa2e7 JK |
5169 | *slot = file_data; |
5170 | } | |
5171 | } | |
5172 | ||
5173 | static void | |
5174 | dw2_expand_symtabs_matching | |
5175 | (struct objfile *objfile, | |
5176 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5177 | const lookup_name_info &lookup_name, | |
5178 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5179 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5180 | enum search_domain kind) | |
5181 | { | |
ed2dc618 SM |
5182 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5183 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5184 | |
5185 | /* index_table is NULL if OBJF_READNOW. */ | |
5186 | if (!dwarf2_per_objfile->index_table) | |
5187 | return; | |
5188 | ||
ed2dc618 | 5189 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
5190 | |
5191 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5192 | ||
5193 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5194 | symbol_matcher, | |
5195 | kind, [&] (offset_type idx) | |
5196 | { | |
ed2dc618 | 5197 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 JK |
5198 | expansion_notify, kind); |
5199 | }); | |
5200 | } | |
5201 | ||
5202 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5203 | symtab. */ | |
5204 | ||
5205 | static struct compunit_symtab * | |
5206 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5207 | CORE_ADDR pc) | |
5208 | { | |
5209 | int i; | |
5210 | ||
5211 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5212 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5213 | return cust; | |
5214 | ||
5215 | if (cust->includes == NULL) | |
5216 | return NULL; | |
5217 | ||
5218 | for (i = 0; cust->includes[i]; ++i) | |
5219 | { | |
5220 | struct compunit_symtab *s = cust->includes[i]; | |
5221 | ||
5222 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5223 | if (s != NULL) | |
5224 | return s; | |
5225 | } | |
5226 | ||
5227 | return NULL; | |
5228 | } | |
5229 | ||
5230 | static struct compunit_symtab * | |
5231 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5232 | struct bound_minimal_symbol msymbol, | |
5233 | CORE_ADDR pc, | |
5234 | struct obj_section *section, | |
5235 | int warn_if_readin) | |
5236 | { | |
5237 | struct dwarf2_per_cu_data *data; | |
5238 | struct compunit_symtab *result; | |
5239 | ||
927aa2e7 JK |
5240 | if (!objfile->psymtabs_addrmap) |
5241 | return NULL; | |
5242 | ||
5243 | data = (struct dwarf2_per_cu_data *) addrmap_find (objfile->psymtabs_addrmap, | |
5244 | pc); | |
5245 | if (!data) | |
5246 | return NULL; | |
5247 | ||
5248 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5249 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5250 | paddress (get_objfile_arch (objfile), pc)); | |
5251 | ||
5252 | result | |
5253 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
5254 | pc); | |
5255 | gdb_assert (result != NULL); | |
5256 | return result; | |
5257 | } | |
5258 | ||
5259 | static void | |
5260 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5261 | void *data, int need_fullname) | |
5262 | { | |
ed2dc618 SM |
5263 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5264 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5265 | |
5266 | if (!dwarf2_per_objfile->filenames_cache) | |
5267 | { | |
5268 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5269 | ||
5270 | htab_up visited (htab_create_alloc (10, | |
5271 | htab_hash_pointer, htab_eq_pointer, | |
5272 | NULL, xcalloc, xfree)); | |
5273 | ||
5274 | /* The rule is CUs specify all the files, including those used | |
5275 | by any TU, so there's no need to scan TUs here. We can | |
5276 | ignore file names coming from already-expanded CUs. */ | |
5277 | ||
b76e467d | 5278 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5279 | { |
927aa2e7 JK |
5280 | if (per_cu->v.quick->compunit_symtab) |
5281 | { | |
5282 | void **slot = htab_find_slot (visited.get (), | |
5283 | per_cu->v.quick->file_names, | |
5284 | INSERT); | |
5285 | ||
5286 | *slot = per_cu->v.quick->file_names; | |
5287 | } | |
5288 | } | |
5289 | ||
b76e467d | 5290 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5291 | { |
927aa2e7 JK |
5292 | /* We only need to look at symtabs not already expanded. */ |
5293 | if (per_cu->v.quick->compunit_symtab) | |
5294 | continue; | |
5295 | ||
b76e467d | 5296 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5297 | if (file_data == NULL) |
5298 | continue; | |
5299 | ||
b76e467d | 5300 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5301 | if (*slot) |
5302 | { | |
5303 | /* Already visited. */ | |
5304 | continue; | |
5305 | } | |
5306 | *slot = file_data; | |
5307 | ||
5308 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5309 | { | |
5310 | const char *filename = file_data->file_names[j]; | |
5311 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5312 | } | |
5313 | } | |
5314 | } | |
5315 | ||
5316 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5317 | { | |
5318 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5319 | ||
5320 | if (need_fullname) | |
5321 | this_real_name = gdb_realpath (filename); | |
5322 | (*fun) (filename, this_real_name.get (), data); | |
5323 | }); | |
5324 | } | |
5325 | ||
5326 | static int | |
5327 | dw2_has_symbols (struct objfile *objfile) | |
5328 | { | |
5329 | return 1; | |
5330 | } | |
5331 | ||
5332 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5333 | { | |
5334 | dw2_has_symbols, | |
5335 | dw2_find_last_source_symtab, | |
5336 | dw2_forget_cached_source_info, | |
5337 | dw2_map_symtabs_matching_filename, | |
5338 | dw2_lookup_symbol, | |
5339 | dw2_print_stats, | |
5340 | dw2_dump, | |
5341 | dw2_relocate, | |
5342 | dw2_expand_symtabs_for_function, | |
5343 | dw2_expand_all_symtabs, | |
5344 | dw2_expand_symtabs_with_fullname, | |
5345 | dw2_map_matching_symbols, | |
5346 | dw2_expand_symtabs_matching, | |
5347 | dw2_find_pc_sect_compunit_symtab, | |
5348 | NULL, | |
5349 | dw2_map_symbol_filenames | |
5350 | }; | |
5351 | ||
5352 | /* DWARF-5 debug_names reader. */ | |
5353 | ||
5354 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5355 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5356 | ||
5357 | /* A helper function that reads the .debug_names section in SECTION | |
5358 | and fills in MAP. FILENAME is the name of the file containing the | |
5359 | section; it is used for error reporting. | |
5360 | ||
5361 | Returns true if all went well, false otherwise. */ | |
5362 | ||
5363 | static bool | |
5364 | read_debug_names_from_section (struct objfile *objfile, | |
5365 | const char *filename, | |
5366 | struct dwarf2_section_info *section, | |
5367 | mapped_debug_names &map) | |
5368 | { | |
5369 | if (dwarf2_section_empty_p (section)) | |
5370 | return false; | |
5371 | ||
5372 | /* Older elfutils strip versions could keep the section in the main | |
5373 | executable while splitting it for the separate debug info file. */ | |
5374 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5375 | return false; | |
5376 | ||
5377 | dwarf2_read_section (objfile, section); | |
5378 | ||
5379 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5380 | ||
5381 | const gdb_byte *addr = section->buffer; | |
5382 | ||
5383 | bfd *const abfd = get_section_bfd_owner (section); | |
5384 | ||
5385 | unsigned int bytes_read; | |
5386 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5387 | addr += bytes_read; | |
5388 | ||
5389 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5390 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5391 | if (bytes_read + length != section->size) | |
5392 | { | |
5393 | /* There may be multiple per-CU indices. */ | |
5394 | warning (_("Section .debug_names in %s length %s does not match " | |
5395 | "section length %s, ignoring .debug_names."), | |
5396 | filename, plongest (bytes_read + length), | |
5397 | pulongest (section->size)); | |
5398 | return false; | |
5399 | } | |
5400 | ||
5401 | /* The version number. */ | |
5402 | uint16_t version = read_2_bytes (abfd, addr); | |
5403 | addr += 2; | |
5404 | if (version != 5) | |
5405 | { | |
5406 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5407 | "ignoring .debug_names."), | |
5408 | filename, version); | |
5409 | return false; | |
5410 | } | |
5411 | ||
5412 | /* Padding. */ | |
5413 | uint16_t padding = read_2_bytes (abfd, addr); | |
5414 | addr += 2; | |
5415 | if (padding != 0) | |
5416 | { | |
5417 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5418 | "ignoring .debug_names."), | |
5419 | filename, padding); | |
5420 | return false; | |
5421 | } | |
5422 | ||
5423 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5424 | map.cu_count = read_4_bytes (abfd, addr); | |
5425 | addr += 4; | |
5426 | ||
5427 | /* local_type_unit_count - The number of TUs in the local TU | |
5428 | list. */ | |
5429 | map.tu_count = read_4_bytes (abfd, addr); | |
5430 | addr += 4; | |
5431 | ||
5432 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5433 | list. */ | |
5434 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5435 | addr += 4; | |
5436 | if (foreign_tu_count != 0) | |
5437 | { | |
5438 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5439 | "ignoring .debug_names."), | |
5440 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5441 | return false; | |
5442 | } | |
5443 | ||
5444 | /* bucket_count - The number of hash buckets in the hash lookup | |
5445 | table. */ | |
5446 | map.bucket_count = read_4_bytes (abfd, addr); | |
5447 | addr += 4; | |
5448 | ||
5449 | /* name_count - The number of unique names in the index. */ | |
5450 | map.name_count = read_4_bytes (abfd, addr); | |
5451 | addr += 4; | |
5452 | ||
5453 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5454 | table. */ | |
5455 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5456 | addr += 4; | |
5457 | ||
5458 | /* augmentation_string_size - The size in bytes of the augmentation | |
5459 | string. This value is rounded up to a multiple of 4. */ | |
5460 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5461 | addr += 4; | |
5462 | map.augmentation_is_gdb = ((augmentation_string_size | |
5463 | == sizeof (dwarf5_augmentation)) | |
5464 | && memcmp (addr, dwarf5_augmentation, | |
5465 | sizeof (dwarf5_augmentation)) == 0); | |
5466 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5467 | addr += augmentation_string_size; | |
5468 | ||
5469 | /* List of CUs */ | |
5470 | map.cu_table_reordered = addr; | |
5471 | addr += map.cu_count * map.offset_size; | |
5472 | ||
5473 | /* List of Local TUs */ | |
5474 | map.tu_table_reordered = addr; | |
5475 | addr += map.tu_count * map.offset_size; | |
5476 | ||
5477 | /* Hash Lookup Table */ | |
5478 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5479 | addr += map.bucket_count * 4; | |
5480 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5481 | addr += map.name_count * 4; | |
5482 | ||
5483 | /* Name Table */ | |
5484 | map.name_table_string_offs_reordered = addr; | |
5485 | addr += map.name_count * map.offset_size; | |
5486 | map.name_table_entry_offs_reordered = addr; | |
5487 | addr += map.name_count * map.offset_size; | |
5488 | ||
5489 | const gdb_byte *abbrev_table_start = addr; | |
5490 | for (;;) | |
5491 | { | |
5492 | unsigned int bytes_read; | |
5493 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5494 | addr += bytes_read; | |
5495 | if (index_num == 0) | |
5496 | break; | |
5497 | ||
5498 | const auto insertpair | |
5499 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5500 | if (!insertpair.second) | |
5501 | { | |
5502 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5503 | "ignoring .debug_names."), | |
5504 | filename, pulongest (index_num)); | |
5505 | return false; | |
5506 | } | |
5507 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5508 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5509 | addr += bytes_read; | |
5510 | ||
5511 | for (;;) | |
5512 | { | |
5513 | mapped_debug_names::index_val::attr attr; | |
5514 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5515 | addr += bytes_read; | |
5516 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5517 | addr += bytes_read; | |
5518 | if (attr.form == DW_FORM_implicit_const) | |
5519 | { | |
5520 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5521 | &bytes_read); | |
5522 | addr += bytes_read; | |
5523 | } | |
5524 | if (attr.dw_idx == 0 && attr.form == 0) | |
5525 | break; | |
5526 | indexval.attr_vec.push_back (std::move (attr)); | |
5527 | } | |
5528 | } | |
5529 | if (addr != abbrev_table_start + abbrev_table_size) | |
5530 | { | |
5531 | warning (_("Section .debug_names in %s has abbreviation_table " | |
5532 | "of size %zu vs. written as %u, ignoring .debug_names."), | |
5533 | filename, addr - abbrev_table_start, abbrev_table_size); | |
5534 | return false; | |
5535 | } | |
5536 | map.entry_pool = addr; | |
5537 | ||
5538 | return true; | |
5539 | } | |
5540 | ||
5541 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5542 | list. */ | |
5543 | ||
5544 | static void | |
ed2dc618 | 5545 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5546 | const mapped_debug_names &map, |
5547 | dwarf2_section_info §ion, | |
b76e467d | 5548 | bool is_dwz) |
927aa2e7 JK |
5549 | { |
5550 | sect_offset sect_off_prev; | |
5551 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5552 | { | |
5553 | sect_offset sect_off_next; | |
5554 | if (i < map.cu_count) | |
5555 | { | |
5556 | sect_off_next | |
5557 | = (sect_offset) (extract_unsigned_integer | |
5558 | (map.cu_table_reordered + i * map.offset_size, | |
5559 | map.offset_size, | |
5560 | map.dwarf5_byte_order)); | |
5561 | } | |
5562 | else | |
5563 | sect_off_next = (sect_offset) section.size; | |
5564 | if (i >= 1) | |
5565 | { | |
5566 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5567 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5568 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5569 | sect_off_prev, length); |
b76e467d | 5570 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5571 | } |
5572 | sect_off_prev = sect_off_next; | |
5573 | } | |
5574 | } | |
5575 | ||
5576 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5577 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5578 | |
5579 | static void | |
ed2dc618 | 5580 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5581 | const mapped_debug_names &map, |
5582 | const mapped_debug_names &dwz_map) | |
5583 | { | |
b76e467d SM |
5584 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5585 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5586 | |
ed2dc618 SM |
5587 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5588 | dwarf2_per_objfile->info, | |
b76e467d | 5589 | false /* is_dwz */); |
927aa2e7 JK |
5590 | |
5591 | if (dwz_map.cu_count == 0) | |
5592 | return; | |
5593 | ||
ed2dc618 SM |
5594 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5595 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5596 | true /* is_dwz */); |
927aa2e7 JK |
5597 | } |
5598 | ||
5599 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5600 | elements of all the CUs and return true. Otherwise, return false. */ | |
5601 | ||
5602 | static bool | |
ed2dc618 | 5603 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5604 | { |
ed2dc618 SM |
5605 | mapped_debug_names local_map (dwarf2_per_objfile); |
5606 | mapped_debug_names dwz_map (dwarf2_per_objfile); | |
5607 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5608 | |
5609 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5610 | &dwarf2_per_objfile->debug_names, | |
5611 | local_map)) | |
5612 | return false; | |
5613 | ||
5614 | /* Don't use the index if it's empty. */ | |
5615 | if (local_map.name_count == 0) | |
5616 | return false; | |
5617 | ||
5618 | /* If there is a .dwz file, read it so we can get its CU list as | |
5619 | well. */ | |
ed2dc618 | 5620 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5621 | if (dwz != NULL) |
5622 | { | |
5623 | if (!read_debug_names_from_section (objfile, | |
5624 | bfd_get_filename (dwz->dwz_bfd), | |
5625 | &dwz->debug_names, dwz_map)) | |
5626 | { | |
5627 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
5628 | bfd_get_filename (dwz->dwz_bfd)); | |
5629 | return false; | |
5630 | } | |
5631 | } | |
5632 | ||
ed2dc618 | 5633 | create_cus_from_debug_names (dwarf2_per_objfile, local_map, dwz_map); |
927aa2e7 JK |
5634 | |
5635 | if (local_map.tu_count != 0) | |
5636 | { | |
5637 | /* We can only handle a single .debug_types when we have an | |
5638 | index. */ | |
5639 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
5640 | return false; | |
5641 | ||
5642 | dwarf2_section_info *section = VEC_index (dwarf2_section_info_def, | |
5643 | dwarf2_per_objfile->types, 0); | |
5644 | ||
5645 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 5646 | (dwarf2_per_objfile, local_map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5647 | } |
5648 | ||
ed2dc618 SM |
5649 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5650 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5651 | |
ed2dc618 SM |
5652 | dwarf2_per_objfile->debug_names_table.reset |
5653 | (new mapped_debug_names (dwarf2_per_objfile)); | |
927aa2e7 JK |
5654 | *dwarf2_per_objfile->debug_names_table = std::move (local_map); |
5655 | dwarf2_per_objfile->using_index = 1; | |
5656 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5657 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5658 | |
5659 | return true; | |
5660 | } | |
5661 | ||
927aa2e7 JK |
5662 | /* Type used to manage iterating over all CUs looking for a symbol for |
5663 | .debug_names. */ | |
5664 | ||
5665 | class dw2_debug_names_iterator | |
5666 | { | |
5667 | public: | |
5668 | /* If WANT_SPECIFIC_BLOCK is true, only look for symbols in block | |
5669 | BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
5670 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5671 | bool want_specific_block, | |
5672 | block_enum block_index, domain_enum domain, | |
5673 | const char *name) | |
5674 | : m_map (map), m_want_specific_block (want_specific_block), | |
5675 | m_block_index (block_index), m_domain (domain), | |
5676 | m_addr (find_vec_in_debug_names (map, name)) | |
5677 | {} | |
5678 | ||
5679 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5680 | search_domain search, uint32_t namei) | |
5681 | : m_map (map), | |
5682 | m_search (search), | |
5683 | m_addr (find_vec_in_debug_names (map, namei)) | |
5684 | {} | |
5685 | ||
5686 | /* Return the next matching CU or NULL if there are no more. */ | |
5687 | dwarf2_per_cu_data *next (); | |
5688 | ||
5689 | private: | |
5690 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5691 | const char *name); | |
5692 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5693 | uint32_t namei); | |
5694 | ||
5695 | /* The internalized form of .debug_names. */ | |
5696 | const mapped_debug_names &m_map; | |
5697 | ||
5698 | /* If true, only look for symbols that match BLOCK_INDEX. */ | |
5699 | const bool m_want_specific_block = false; | |
5700 | ||
5701 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
5702 | Unused if !WANT_SPECIFIC_BLOCK - FIRST_LOCAL_BLOCK is an invalid | |
5703 | value. */ | |
5704 | const block_enum m_block_index = FIRST_LOCAL_BLOCK; | |
5705 | ||
5706 | /* The kind of symbol we're looking for. */ | |
5707 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5708 | const search_domain m_search = ALL_DOMAIN; | |
5709 | ||
5710 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5711 | not found. */ | |
5712 | const gdb_byte *m_addr; | |
5713 | }; | |
5714 | ||
5715 | const char * | |
5716 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5717 | { | |
5718 | const ULONGEST namei_string_offs | |
5719 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5720 | + namei * offset_size), | |
5721 | offset_size, | |
5722 | dwarf5_byte_order); | |
5723 | return read_indirect_string_at_offset | |
ed2dc618 | 5724 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
5725 | } |
5726 | ||
5727 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5728 | found, return pointer to its pool data. If NAME cannot be found, | |
5729 | return NULL. */ | |
5730 | ||
5731 | const gdb_byte * | |
5732 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5733 | (const mapped_debug_names &map, const char *name) | |
5734 | { | |
5735 | int (*cmp) (const char *, const char *); | |
5736 | ||
5737 | if (current_language->la_language == language_cplus | |
5738 | || current_language->la_language == language_fortran | |
5739 | || current_language->la_language == language_d) | |
5740 | { | |
5741 | /* NAME is already canonical. Drop any qualifiers as | |
5742 | .debug_names does not contain any. */ | |
5743 | ||
5744 | if (strchr (name, '(') != NULL) | |
5745 | { | |
5746 | gdb::unique_xmalloc_ptr<char> without_params | |
5747 | = cp_remove_params (name); | |
5748 | ||
5749 | if (without_params != NULL) | |
5750 | { | |
5751 | name = without_params.get(); | |
5752 | } | |
5753 | } | |
5754 | } | |
5755 | ||
5756 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5757 | ||
5758 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5759 | uint32_t namei | |
5760 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5761 | (map.bucket_table_reordered | |
5762 | + (full_hash % map.bucket_count)), 4, | |
5763 | map.dwarf5_byte_order); | |
5764 | if (namei == 0) | |
5765 | return NULL; | |
5766 | --namei; | |
5767 | if (namei >= map.name_count) | |
5768 | { | |
5769 | complaint (&symfile_complaints, | |
5770 | _("Wrong .debug_names with name index %u but name_count=%u " | |
5771 | "[in module %s]"), | |
5772 | namei, map.name_count, | |
ed2dc618 | 5773 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5774 | return NULL; |
5775 | } | |
5776 | ||
5777 | for (;;) | |
5778 | { | |
5779 | const uint32_t namei_full_hash | |
5780 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5781 | (map.hash_table_reordered + namei), 4, | |
5782 | map.dwarf5_byte_order); | |
5783 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5784 | return NULL; | |
5785 | ||
5786 | if (full_hash == namei_full_hash) | |
5787 | { | |
5788 | const char *const namei_string = map.namei_to_name (namei); | |
5789 | ||
5790 | #if 0 /* An expensive sanity check. */ | |
5791 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5792 | { | |
5793 | complaint (&symfile_complaints, | |
5794 | _("Wrong .debug_names hash for string at index %u " | |
5795 | "[in module %s]"), | |
5796 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5797 | return NULL; | |
5798 | } | |
5799 | #endif | |
5800 | ||
5801 | if (cmp (namei_string, name) == 0) | |
5802 | { | |
5803 | const ULONGEST namei_entry_offs | |
5804 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5805 | + namei * map.offset_size), | |
5806 | map.offset_size, map.dwarf5_byte_order); | |
5807 | return map.entry_pool + namei_entry_offs; | |
5808 | } | |
5809 | } | |
5810 | ||
5811 | ++namei; | |
5812 | if (namei >= map.name_count) | |
5813 | return NULL; | |
5814 | } | |
5815 | } | |
5816 | ||
5817 | const gdb_byte * | |
5818 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5819 | (const mapped_debug_names &map, uint32_t namei) | |
5820 | { | |
5821 | if (namei >= map.name_count) | |
5822 | { | |
5823 | complaint (&symfile_complaints, | |
5824 | _("Wrong .debug_names with name index %u but name_count=%u " | |
5825 | "[in module %s]"), | |
5826 | namei, map.name_count, | |
ed2dc618 | 5827 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5828 | return NULL; |
5829 | } | |
5830 | ||
5831 | const ULONGEST namei_entry_offs | |
5832 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5833 | + namei * map.offset_size), | |
5834 | map.offset_size, map.dwarf5_byte_order); | |
5835 | return map.entry_pool + namei_entry_offs; | |
5836 | } | |
5837 | ||
5838 | /* See dw2_debug_names_iterator. */ | |
5839 | ||
5840 | dwarf2_per_cu_data * | |
5841 | dw2_debug_names_iterator::next () | |
5842 | { | |
5843 | if (m_addr == NULL) | |
5844 | return NULL; | |
5845 | ||
ed2dc618 SM |
5846 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5847 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5848 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5849 | |
5850 | again: | |
5851 | ||
5852 | unsigned int bytes_read; | |
5853 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5854 | m_addr += bytes_read; | |
5855 | if (abbrev == 0) | |
5856 | return NULL; | |
5857 | ||
5858 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5859 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5860 | { | |
5861 | complaint (&symfile_complaints, | |
5862 | _("Wrong .debug_names undefined abbrev code %s " | |
5863 | "[in module %s]"), | |
ed2dc618 | 5864 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5865 | return NULL; |
5866 | } | |
5867 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
5868 | bool have_is_static = false; | |
5869 | bool is_static; | |
5870 | dwarf2_per_cu_data *per_cu = NULL; | |
5871 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5872 | { | |
5873 | ULONGEST ull; | |
5874 | switch (attr.form) | |
5875 | { | |
5876 | case DW_FORM_implicit_const: | |
5877 | ull = attr.implicit_const; | |
5878 | break; | |
5879 | case DW_FORM_flag_present: | |
5880 | ull = 1; | |
5881 | break; | |
5882 | case DW_FORM_udata: | |
5883 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5884 | m_addr += bytes_read; | |
5885 | break; | |
5886 | default: | |
5887 | complaint (&symfile_complaints, | |
5888 | _("Unsupported .debug_names form %s [in module %s]"), | |
5889 | dwarf_form_name (attr.form), | |
ed2dc618 | 5890 | objfile_name (objfile)); |
927aa2e7 JK |
5891 | return NULL; |
5892 | } | |
5893 | switch (attr.dw_idx) | |
5894 | { | |
5895 | case DW_IDX_compile_unit: | |
5896 | /* Don't crash on bad data. */ | |
b76e467d | 5897 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 JK |
5898 | { |
5899 | complaint (&symfile_complaints, | |
5900 | _(".debug_names entry has bad CU index %s" | |
5901 | " [in module %s]"), | |
5902 | pulongest (ull), | |
5903 | objfile_name (dwarf2_per_objfile->objfile)); | |
5904 | continue; | |
5905 | } | |
ff4c9fec | 5906 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5907 | break; |
8af5c486 JK |
5908 | case DW_IDX_type_unit: |
5909 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5910 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 JK |
5911 | { |
5912 | complaint (&symfile_complaints, | |
5913 | _(".debug_names entry has bad TU index %s" | |
5914 | " [in module %s]"), | |
5915 | pulongest (ull), | |
5916 | objfile_name (dwarf2_per_objfile->objfile)); | |
5917 | continue; | |
5918 | } | |
ff4c9fec | 5919 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5920 | break; |
927aa2e7 JK |
5921 | case DW_IDX_GNU_internal: |
5922 | if (!m_map.augmentation_is_gdb) | |
5923 | break; | |
5924 | have_is_static = true; | |
5925 | is_static = true; | |
5926 | break; | |
5927 | case DW_IDX_GNU_external: | |
5928 | if (!m_map.augmentation_is_gdb) | |
5929 | break; | |
5930 | have_is_static = true; | |
5931 | is_static = false; | |
5932 | break; | |
5933 | } | |
5934 | } | |
5935 | ||
5936 | /* Skip if already read in. */ | |
5937 | if (per_cu->v.quick->compunit_symtab) | |
5938 | goto again; | |
5939 | ||
5940 | /* Check static vs global. */ | |
5941 | if (have_is_static) | |
5942 | { | |
5943 | const bool want_static = m_block_index != GLOBAL_BLOCK; | |
5944 | if (m_want_specific_block && want_static != is_static) | |
5945 | goto again; | |
5946 | } | |
5947 | ||
5948 | /* Match dw2_symtab_iter_next, symbol_kind | |
5949 | and debug_names::psymbol_tag. */ | |
5950 | switch (m_domain) | |
5951 | { | |
5952 | case VAR_DOMAIN: | |
5953 | switch (indexval.dwarf_tag) | |
5954 | { | |
5955 | case DW_TAG_variable: | |
5956 | case DW_TAG_subprogram: | |
5957 | /* Some types are also in VAR_DOMAIN. */ | |
5958 | case DW_TAG_typedef: | |
5959 | case DW_TAG_structure_type: | |
5960 | break; | |
5961 | default: | |
5962 | goto again; | |
5963 | } | |
5964 | break; | |
5965 | case STRUCT_DOMAIN: | |
5966 | switch (indexval.dwarf_tag) | |
5967 | { | |
5968 | case DW_TAG_typedef: | |
5969 | case DW_TAG_structure_type: | |
5970 | break; | |
5971 | default: | |
5972 | goto again; | |
5973 | } | |
5974 | break; | |
5975 | case LABEL_DOMAIN: | |
5976 | switch (indexval.dwarf_tag) | |
5977 | { | |
5978 | case 0: | |
5979 | case DW_TAG_variable: | |
5980 | break; | |
5981 | default: | |
5982 | goto again; | |
5983 | } | |
5984 | break; | |
5985 | default: | |
5986 | break; | |
5987 | } | |
5988 | ||
5989 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5990 | debug_names::psymbol_tag. */ | |
5991 | switch (m_search) | |
4b514bc8 | 5992 | { |
927aa2e7 JK |
5993 | case VARIABLES_DOMAIN: |
5994 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5995 | { |
927aa2e7 JK |
5996 | case DW_TAG_variable: |
5997 | break; | |
5998 | default: | |
5999 | goto again; | |
4b514bc8 | 6000 | } |
927aa2e7 JK |
6001 | break; |
6002 | case FUNCTIONS_DOMAIN: | |
6003 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6004 | { |
927aa2e7 JK |
6005 | case DW_TAG_subprogram: |
6006 | break; | |
6007 | default: | |
6008 | goto again; | |
4b514bc8 | 6009 | } |
927aa2e7 JK |
6010 | break; |
6011 | case TYPES_DOMAIN: | |
6012 | switch (indexval.dwarf_tag) | |
6013 | { | |
6014 | case DW_TAG_typedef: | |
6015 | case DW_TAG_structure_type: | |
6016 | break; | |
6017 | default: | |
6018 | goto again; | |
6019 | } | |
6020 | break; | |
6021 | default: | |
6022 | break; | |
4b514bc8 | 6023 | } |
927aa2e7 JK |
6024 | |
6025 | return per_cu; | |
4b514bc8 | 6026 | } |
61920122 | 6027 | |
927aa2e7 JK |
6028 | static struct compunit_symtab * |
6029 | dw2_debug_names_lookup_symbol (struct objfile *objfile, int block_index_int, | |
6030 | const char *name, domain_enum domain) | |
4b514bc8 | 6031 | { |
927aa2e7 | 6032 | const block_enum block_index = static_cast<block_enum> (block_index_int); |
ed2dc618 SM |
6033 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6034 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 6035 | |
927aa2e7 JK |
6036 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6037 | if (!mapp) | |
61920122 | 6038 | { |
927aa2e7 JK |
6039 | /* index is NULL if OBJF_READNOW. */ |
6040 | return NULL; | |
6041 | } | |
6042 | const auto &map = *mapp; | |
9291a0cd | 6043 | |
927aa2e7 JK |
6044 | dw2_debug_names_iterator iter (map, true /* want_specific_block */, |
6045 | block_index, domain, name); | |
9703b513 | 6046 | |
927aa2e7 JK |
6047 | struct compunit_symtab *stab_best = NULL; |
6048 | struct dwarf2_per_cu_data *per_cu; | |
6049 | while ((per_cu = iter.next ()) != NULL) | |
6050 | { | |
6051 | struct symbol *sym, *with_opaque = NULL; | |
6052 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); | |
6053 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
6054 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
9703b513 | 6055 | |
927aa2e7 JK |
6056 | sym = block_find_symbol (block, name, domain, |
6057 | block_find_non_opaque_type_preferred, | |
6058 | &with_opaque); | |
9703b513 | 6059 | |
927aa2e7 JK |
6060 | /* Some caution must be observed with overloaded functions and |
6061 | methods, since the index will not contain any overload | |
6062 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6063 | |
927aa2e7 JK |
6064 | if (sym != NULL |
6065 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
6066 | return stab; | |
6067 | if (with_opaque != NULL | |
6068 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
6069 | stab_best = stab; | |
9703b513 | 6070 | |
927aa2e7 | 6071 | /* Keep looking through other CUs. */ |
9703b513 TT |
6072 | } |
6073 | ||
927aa2e7 | 6074 | return stab_best; |
9703b513 TT |
6075 | } |
6076 | ||
927aa2e7 JK |
6077 | /* This dumps minimal information about .debug_names. It is called |
6078 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6079 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6080 | |
927aa2e7 JK |
6081 | static void |
6082 | dw2_debug_names_dump (struct objfile *objfile) | |
6083 | { | |
ed2dc618 SM |
6084 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6085 | = get_dwarf2_per_objfile (objfile); | |
6086 | ||
927aa2e7 JK |
6087 | gdb_assert (dwarf2_per_objfile->using_index); |
6088 | printf_filtered (".debug_names:"); | |
6089 | if (dwarf2_per_objfile->debug_names_table) | |
6090 | printf_filtered (" exists\n"); | |
6091 | else | |
6092 | printf_filtered (" faked for \"readnow\"\n"); | |
6093 | printf_filtered ("\n"); | |
9291a0cd TT |
6094 | } |
6095 | ||
9291a0cd | 6096 | static void |
927aa2e7 JK |
6097 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6098 | const char *func_name) | |
9291a0cd | 6099 | { |
ed2dc618 SM |
6100 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6101 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 6102 | |
927aa2e7 JK |
6103 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6104 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6105 | { |
927aa2e7 | 6106 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6107 | |
927aa2e7 JK |
6108 | /* Note: It doesn't matter what we pass for block_index here. */ |
6109 | dw2_debug_names_iterator iter (map, false /* want_specific_block */, | |
6110 | GLOBAL_BLOCK, VAR_DOMAIN, func_name); | |
24c79950 | 6111 | |
927aa2e7 JK |
6112 | struct dwarf2_per_cu_data *per_cu; |
6113 | while ((per_cu = iter.next ()) != NULL) | |
6114 | dw2_instantiate_symtab (per_cu); | |
6115 | } | |
6116 | } | |
24c79950 | 6117 | |
927aa2e7 JK |
6118 | static void |
6119 | dw2_debug_names_expand_symtabs_matching | |
6120 | (struct objfile *objfile, | |
6121 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6122 | const lookup_name_info &lookup_name, | |
6123 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6124 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6125 | enum search_domain kind) | |
6126 | { | |
ed2dc618 SM |
6127 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6128 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 6129 | |
927aa2e7 JK |
6130 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6131 | if (!dwarf2_per_objfile->debug_names_table) | |
6132 | return; | |
9291a0cd | 6133 | |
ed2dc618 | 6134 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 6135 | |
44ed8f3e | 6136 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6137 | |
44ed8f3e PA |
6138 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
6139 | symbol_matcher, | |
6140 | kind, [&] (offset_type namei) | |
927aa2e7 | 6141 | { |
927aa2e7 JK |
6142 | /* The name was matched, now expand corresponding CUs that were |
6143 | marked. */ | |
6144 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6145 | |
927aa2e7 JK |
6146 | struct dwarf2_per_cu_data *per_cu; |
6147 | while ((per_cu = iter.next ()) != NULL) | |
6148 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6149 | expansion_notify); | |
44ed8f3e | 6150 | }); |
9291a0cd TT |
6151 | } |
6152 | ||
927aa2e7 | 6153 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6154 | { |
6155 | dw2_has_symbols, | |
6156 | dw2_find_last_source_symtab, | |
6157 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6158 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6159 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6160 | dw2_print_stats, |
927aa2e7 | 6161 | dw2_debug_names_dump, |
9291a0cd | 6162 | dw2_relocate, |
927aa2e7 | 6163 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6164 | dw2_expand_all_symtabs, |
652a8996 | 6165 | dw2_expand_symtabs_with_fullname, |
40658b94 | 6166 | dw2_map_matching_symbols, |
927aa2e7 | 6167 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6168 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6169 | NULL, |
9291a0cd TT |
6170 | dw2_map_symbol_filenames |
6171 | }; | |
6172 | ||
3c0aa29a | 6173 | /* See symfile.h. */ |
9291a0cd | 6174 | |
3c0aa29a PA |
6175 | bool |
6176 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6177 | { |
ed2dc618 SM |
6178 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6179 | = get_dwarf2_per_objfile (objfile); | |
6180 | ||
9291a0cd TT |
6181 | /* If we're about to read full symbols, don't bother with the |
6182 | indices. In this case we also don't care if some other debug | |
6183 | format is making psymtabs, because they are all about to be | |
6184 | expanded anyway. */ | |
6185 | if ((objfile->flags & OBJF_READNOW)) | |
6186 | { | |
9291a0cd | 6187 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
6188 | create_all_comp_units (dwarf2_per_objfile); |
6189 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
6190 | dwarf2_per_objfile->quick_file_names_table |
6191 | = create_quick_file_names_table | |
6192 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 6193 | |
b76e467d | 6194 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 6195 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 6196 | { |
ff4c9fec | 6197 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 6198 | |
e254ef6a DE |
6199 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6200 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6201 | } |
6202 | ||
6203 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6204 | these functions will be no-ops because we will have expanded | |
6205 | all symtabs. */ | |
3c0aa29a PA |
6206 | *index_kind = dw_index_kind::GDB_INDEX; |
6207 | return true; | |
9291a0cd TT |
6208 | } |
6209 | ||
ed2dc618 | 6210 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6211 | { |
6212 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6213 | return true; | |
6214 | } | |
927aa2e7 | 6215 | |
12359b5e | 6216 | if (dwarf2_read_index (dwarf2_per_objfile)) |
3c0aa29a PA |
6217 | { |
6218 | *index_kind = dw_index_kind::GDB_INDEX; | |
6219 | return true; | |
6220 | } | |
9291a0cd | 6221 | |
3c0aa29a | 6222 | return false; |
9291a0cd TT |
6223 | } |
6224 | ||
6225 | \f | |
6226 | ||
dce234bc PP |
6227 | /* Build a partial symbol table. */ |
6228 | ||
6229 | void | |
f29dff0a | 6230 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6231 | { |
ed2dc618 SM |
6232 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6233 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6234 | |
af5bf4ad SM |
6235 | if (objfile->global_psymbols.capacity () == 0 |
6236 | && objfile->static_psymbols.capacity () == 0) | |
6237 | init_psymbol_list (objfile, 1024); | |
c906108c | 6238 | |
492d29ea | 6239 | TRY |
c9bf0622 TT |
6240 | { |
6241 | /* This isn't really ideal: all the data we allocate on the | |
6242 | objfile's obstack is still uselessly kept around. However, | |
6243 | freeing it seems unsafe. */ | |
906768f9 | 6244 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6245 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6246 | psymtabs.keep (); |
c9bf0622 | 6247 | } |
492d29ea PA |
6248 | CATCH (except, RETURN_MASK_ERROR) |
6249 | { | |
6250 | exception_print (gdb_stderr, except); | |
6251 | } | |
6252 | END_CATCH | |
c906108c | 6253 | } |
c906108c | 6254 | |
1ce1cefd DE |
6255 | /* Return the total length of the CU described by HEADER. */ |
6256 | ||
6257 | static unsigned int | |
6258 | get_cu_length (const struct comp_unit_head *header) | |
6259 | { | |
6260 | return header->initial_length_size + header->length; | |
6261 | } | |
6262 | ||
9c541725 | 6263 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6264 | |
9c541725 PA |
6265 | static inline bool |
6266 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6267 | { |
9c541725 PA |
6268 | sect_offset bottom = cu_header->sect_off; |
6269 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6270 | |
9c541725 | 6271 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6272 | } |
6273 | ||
3b80fe9b DE |
6274 | /* Find the base address of the compilation unit for range lists and |
6275 | location lists. It will normally be specified by DW_AT_low_pc. | |
6276 | In DWARF-3 draft 4, the base address could be overridden by | |
6277 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6278 | compilation units with discontinuous ranges. */ | |
6279 | ||
6280 | static void | |
6281 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6282 | { | |
6283 | struct attribute *attr; | |
6284 | ||
6285 | cu->base_known = 0; | |
6286 | cu->base_address = 0; | |
6287 | ||
6288 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
6289 | if (attr) | |
6290 | { | |
31aa7e4e | 6291 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6292 | cu->base_known = 1; |
6293 | } | |
6294 | else | |
6295 | { | |
6296 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6297 | if (attr) | |
6298 | { | |
31aa7e4e | 6299 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6300 | cu->base_known = 1; |
6301 | } | |
6302 | } | |
6303 | } | |
6304 | ||
93311388 | 6305 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6306 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6307 | NOTE: This leaves members offset, first_die_offset to be filled in |
6308 | by the caller. */ | |
107d2387 | 6309 | |
d521ce57 | 6310 | static const gdb_byte * |
107d2387 | 6311 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6312 | const gdb_byte *info_ptr, |
6313 | struct dwarf2_section_info *section, | |
6314 | rcuh_kind section_kind) | |
107d2387 AC |
6315 | { |
6316 | int signed_addr; | |
891d2f0b | 6317 | unsigned int bytes_read; |
43988095 JK |
6318 | const char *filename = get_section_file_name (section); |
6319 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6320 | |
6321 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6322 | cu_header->initial_length_size = bytes_read; | |
6323 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6324 | info_ptr += bytes_read; |
107d2387 AC |
6325 | cu_header->version = read_2_bytes (abfd, info_ptr); |
6326 | info_ptr += 2; | |
43988095 JK |
6327 | if (cu_header->version < 5) |
6328 | switch (section_kind) | |
6329 | { | |
6330 | case rcuh_kind::COMPILE: | |
6331 | cu_header->unit_type = DW_UT_compile; | |
6332 | break; | |
6333 | case rcuh_kind::TYPE: | |
6334 | cu_header->unit_type = DW_UT_type; | |
6335 | break; | |
6336 | default: | |
6337 | internal_error (__FILE__, __LINE__, | |
6338 | _("read_comp_unit_head: invalid section_kind")); | |
6339 | } | |
6340 | else | |
6341 | { | |
6342 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6343 | (read_1_byte (abfd, info_ptr)); | |
6344 | info_ptr += 1; | |
6345 | switch (cu_header->unit_type) | |
6346 | { | |
6347 | case DW_UT_compile: | |
6348 | if (section_kind != rcuh_kind::COMPILE) | |
6349 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6350 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
6351 | filename); | |
6352 | break; | |
6353 | case DW_UT_type: | |
6354 | section_kind = rcuh_kind::TYPE; | |
6355 | break; | |
6356 | default: | |
6357 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6358 | "(is %d, should be %d or %d) [in module %s]"), | |
6359 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
6360 | } | |
6361 | ||
6362 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6363 | info_ptr += 1; | |
6364 | } | |
9c541725 PA |
6365 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6366 | cu_header, | |
6367 | &bytes_read); | |
613e1657 | 6368 | info_ptr += bytes_read; |
43988095 JK |
6369 | if (cu_header->version < 5) |
6370 | { | |
6371 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6372 | info_ptr += 1; | |
6373 | } | |
107d2387 AC |
6374 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6375 | if (signed_addr < 0) | |
8e65ff28 | 6376 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6377 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6378 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6379 | |
43988095 JK |
6380 | if (section_kind == rcuh_kind::TYPE) |
6381 | { | |
6382 | LONGEST type_offset; | |
6383 | ||
6384 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
6385 | info_ptr += 8; | |
6386 | ||
6387 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
6388 | info_ptr += bytes_read; | |
9c541725 PA |
6389 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6390 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6391 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6392 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6393 | filename); | |
6394 | } | |
6395 | ||
107d2387 AC |
6396 | return info_ptr; |
6397 | } | |
6398 | ||
36586728 TT |
6399 | /* Helper function that returns the proper abbrev section for |
6400 | THIS_CU. */ | |
6401 | ||
6402 | static struct dwarf2_section_info * | |
6403 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6404 | { | |
6405 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6406 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6407 | |
6408 | if (this_cu->is_dwz) | |
ed2dc618 | 6409 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6410 | else |
6411 | abbrev = &dwarf2_per_objfile->abbrev; | |
6412 | ||
6413 | return abbrev; | |
6414 | } | |
6415 | ||
9ff913ba DE |
6416 | /* Subroutine of read_and_check_comp_unit_head and |
6417 | read_and_check_type_unit_head to simplify them. | |
6418 | Perform various error checking on the header. */ | |
6419 | ||
6420 | static void | |
ed2dc618 SM |
6421 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6422 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6423 | struct dwarf2_section_info *section, |
6424 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6425 | { |
a32a8923 | 6426 | const char *filename = get_section_file_name (section); |
9ff913ba | 6427 | |
43988095 | 6428 | if (header->version < 2 || header->version > 5) |
9ff913ba | 6429 | error (_("Dwarf Error: wrong version in compilation unit header " |
43988095 | 6430 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), header->version, |
9ff913ba DE |
6431 | filename); |
6432 | ||
9c541725 | 6433 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6434 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6435 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6436 | "(offset %s + 6) [in module %s]"), | |
6437 | sect_offset_str (header->abbrev_sect_off), | |
6438 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6439 | filename); |
6440 | ||
9c541725 | 6441 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6442 | avoid potential 32-bit overflow. */ |
9c541725 | 6443 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6444 | > section->size) |
9c541725 | 6445 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6446 | "(offset %s + 0) [in module %s]"), |
6447 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6448 | filename); |
6449 | } | |
6450 | ||
6451 | /* Read in a CU/TU header and perform some basic error checking. | |
6452 | The contents of the header are stored in HEADER. | |
6453 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6454 | |
d521ce57 | 6455 | static const gdb_byte * |
ed2dc618 SM |
6456 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6457 | struct comp_unit_head *header, | |
9ff913ba | 6458 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6459 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6460 | const gdb_byte *info_ptr, |
43988095 | 6461 | rcuh_kind section_kind) |
72bf9492 | 6462 | { |
d521ce57 | 6463 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6464 | |
9c541725 | 6465 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6466 | |
43988095 | 6467 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6468 | |
9c541725 | 6469 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6470 | |
ed2dc618 SM |
6471 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6472 | abbrev_section); | |
9ff913ba DE |
6473 | |
6474 | return info_ptr; | |
348e048f DE |
6475 | } |
6476 | ||
f4dc4d17 DE |
6477 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6478 | ||
6479 | static sect_offset | |
ed2dc618 SM |
6480 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6481 | struct dwarf2_section_info *section, | |
9c541725 | 6482 | sect_offset sect_off) |
f4dc4d17 | 6483 | { |
a32a8923 | 6484 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6485 | const gdb_byte *info_ptr; |
ac298888 | 6486 | unsigned int initial_length_size, offset_size; |
43988095 | 6487 | uint16_t version; |
f4dc4d17 DE |
6488 | |
6489 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6490 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6491 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6492 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6493 | info_ptr += initial_length_size; |
6494 | ||
6495 | version = read_2_bytes (abfd, info_ptr); | |
6496 | info_ptr += 2; | |
6497 | if (version >= 5) | |
6498 | { | |
6499 | /* Skip unit type and address size. */ | |
6500 | info_ptr += 2; | |
6501 | } | |
6502 | ||
9c541725 | 6503 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6504 | } |
6505 | ||
aaa75496 JB |
6506 | /* Allocate a new partial symtab for file named NAME and mark this new |
6507 | partial symtab as being an include of PST. */ | |
6508 | ||
6509 | static void | |
d521ce57 | 6510 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
6511 | struct objfile *objfile) |
6512 | { | |
6513 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
6514 | ||
fbd9ab74 JK |
6515 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6516 | { | |
6517 | /* It shares objfile->objfile_obstack. */ | |
6518 | subpst->dirname = pst->dirname; | |
6519 | } | |
6520 | ||
aaa75496 JB |
6521 | subpst->textlow = 0; |
6522 | subpst->texthigh = 0; | |
6523 | ||
8d749320 SM |
6524 | subpst->dependencies |
6525 | = XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
aaa75496 JB |
6526 | subpst->dependencies[0] = pst; |
6527 | subpst->number_of_dependencies = 1; | |
6528 | ||
6529 | subpst->globals_offset = 0; | |
6530 | subpst->n_global_syms = 0; | |
6531 | subpst->statics_offset = 0; | |
6532 | subpst->n_static_syms = 0; | |
43f3e411 | 6533 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
6534 | subpst->read_symtab = pst->read_symtab; |
6535 | subpst->readin = 0; | |
6536 | ||
6537 | /* No private part is necessary for include psymtabs. This property | |
6538 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6539 | the regular ones. */ |
58a9656e | 6540 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
6541 | } |
6542 | ||
6543 | /* Read the Line Number Program data and extract the list of files | |
6544 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6545 | partial symtab for each of these included files. */ |
aaa75496 JB |
6546 | |
6547 | static void | |
6548 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
6549 | struct die_info *die, |
6550 | struct partial_symtab *pst) | |
aaa75496 | 6551 | { |
fff8551c | 6552 | line_header_up lh; |
d85a05f0 | 6553 | struct attribute *attr; |
aaa75496 | 6554 | |
d85a05f0 DJ |
6555 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6556 | if (attr) | |
9c541725 | 6557 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6558 | if (lh == NULL) |
6559 | return; /* No linetable, so no includes. */ | |
6560 | ||
c6da4cef | 6561 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
fff8551c | 6562 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
6563 | } |
6564 | ||
348e048f | 6565 | static hashval_t |
52dc124a | 6566 | hash_signatured_type (const void *item) |
348e048f | 6567 | { |
9a3c8263 SM |
6568 | const struct signatured_type *sig_type |
6569 | = (const struct signatured_type *) item; | |
9a619af0 | 6570 | |
348e048f | 6571 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6572 | return sig_type->signature; |
348e048f DE |
6573 | } |
6574 | ||
6575 | static int | |
52dc124a | 6576 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6577 | { |
9a3c8263 SM |
6578 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6579 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6580 | |
348e048f DE |
6581 | return lhs->signature == rhs->signature; |
6582 | } | |
6583 | ||
1fd400ff TT |
6584 | /* Allocate a hash table for signatured types. */ |
6585 | ||
6586 | static htab_t | |
673bfd45 | 6587 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6588 | { |
6589 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6590 | hash_signatured_type, |
6591 | eq_signatured_type, | |
1fd400ff TT |
6592 | NULL, |
6593 | &objfile->objfile_obstack, | |
6594 | hashtab_obstack_allocate, | |
6595 | dummy_obstack_deallocate); | |
6596 | } | |
6597 | ||
d467dd73 | 6598 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6599 | |
6600 | static int | |
d467dd73 | 6601 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6602 | { |
9a3c8263 | 6603 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6604 | std::vector<signatured_type *> *all_type_units |
6605 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6606 | |
b2bdb8cf | 6607 | all_type_units->push_back (sigt); |
1fd400ff TT |
6608 | |
6609 | return 1; | |
6610 | } | |
6611 | ||
78d4d2c5 | 6612 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6613 | and fill them into TYPES_HTAB. It will process only type units, |
6614 | therefore DW_UT_type. */ | |
c88ee1f0 | 6615 | |
78d4d2c5 | 6616 | static void |
ed2dc618 SM |
6617 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6618 | struct dwo_file *dwo_file, | |
43988095 JK |
6619 | dwarf2_section_info *section, htab_t &types_htab, |
6620 | rcuh_kind section_kind) | |
348e048f | 6621 | { |
3019eac3 | 6622 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6623 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6624 | bfd *abfd; |
6625 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6626 | |
4bdcc0c1 DE |
6627 | abbrev_section = (dwo_file != NULL |
6628 | ? &dwo_file->sections.abbrev | |
6629 | : &dwarf2_per_objfile->abbrev); | |
6630 | ||
b4f54984 | 6631 | if (dwarf_read_debug) |
43988095 JK |
6632 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
6633 | get_section_name (section), | |
a32a8923 | 6634 | get_section_file_name (abbrev_section)); |
09406207 | 6635 | |
78d4d2c5 JK |
6636 | dwarf2_read_section (objfile, section); |
6637 | info_ptr = section->buffer; | |
348e048f | 6638 | |
78d4d2c5 JK |
6639 | if (info_ptr == NULL) |
6640 | return; | |
348e048f | 6641 | |
78d4d2c5 JK |
6642 | /* We can't set abfd until now because the section may be empty or |
6643 | not present, in which case the bfd is unknown. */ | |
6644 | abfd = get_section_bfd_owner (section); | |
348e048f | 6645 | |
78d4d2c5 JK |
6646 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
6647 | because we don't need to read any dies: the signature is in the | |
6648 | header. */ | |
3019eac3 | 6649 | |
78d4d2c5 JK |
6650 | end_ptr = info_ptr + section->size; |
6651 | while (info_ptr < end_ptr) | |
6652 | { | |
78d4d2c5 JK |
6653 | struct signatured_type *sig_type; |
6654 | struct dwo_unit *dwo_tu; | |
6655 | void **slot; | |
6656 | const gdb_byte *ptr = info_ptr; | |
6657 | struct comp_unit_head header; | |
6658 | unsigned int length; | |
8b70b953 | 6659 | |
9c541725 | 6660 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6661 | |
a49dd8dd JK |
6662 | /* Initialize it due to a false compiler warning. */ |
6663 | header.signature = -1; | |
9c541725 | 6664 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6665 | |
78d4d2c5 JK |
6666 | /* We need to read the type's signature in order to build the hash |
6667 | table, but we don't need anything else just yet. */ | |
348e048f | 6668 | |
ed2dc618 | 6669 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6670 | abbrev_section, ptr, section_kind); |
348e048f | 6671 | |
78d4d2c5 | 6672 | length = get_cu_length (&header); |
6caca83c | 6673 | |
78d4d2c5 JK |
6674 | /* Skip dummy type units. */ |
6675 | if (ptr >= info_ptr + length | |
43988095 JK |
6676 | || peek_abbrev_code (abfd, ptr) == 0 |
6677 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6678 | { |
6679 | info_ptr += length; | |
6680 | continue; | |
6681 | } | |
dee91e82 | 6682 | |
78d4d2c5 JK |
6683 | if (types_htab == NULL) |
6684 | { | |
6685 | if (dwo_file) | |
6686 | types_htab = allocate_dwo_unit_table (objfile); | |
6687 | else | |
6688 | types_htab = allocate_signatured_type_table (objfile); | |
6689 | } | |
8b70b953 | 6690 | |
78d4d2c5 JK |
6691 | if (dwo_file) |
6692 | { | |
6693 | sig_type = NULL; | |
6694 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6695 | struct dwo_unit); | |
6696 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6697 | dwo_tu->signature = header.signature; |
9c541725 | 6698 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6699 | dwo_tu->section = section; |
9c541725 | 6700 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6701 | dwo_tu->length = length; |
6702 | } | |
6703 | else | |
6704 | { | |
6705 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6706 | The real type_offset is in the DWO file. */ | |
6707 | dwo_tu = NULL; | |
6708 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6709 | struct signatured_type); | |
43988095 | 6710 | sig_type->signature = header.signature; |
9c541725 | 6711 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6712 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6713 | sig_type->per_cu.is_debug_types = 1; |
6714 | sig_type->per_cu.section = section; | |
9c541725 | 6715 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6716 | sig_type->per_cu.length = length; |
6717 | } | |
6718 | ||
6719 | slot = htab_find_slot (types_htab, | |
6720 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6721 | INSERT); | |
6722 | gdb_assert (slot != NULL); | |
6723 | if (*slot != NULL) | |
6724 | { | |
9c541725 | 6725 | sect_offset dup_sect_off; |
0349ea22 | 6726 | |
3019eac3 DE |
6727 | if (dwo_file) |
6728 | { | |
78d4d2c5 JK |
6729 | const struct dwo_unit *dup_tu |
6730 | = (const struct dwo_unit *) *slot; | |
6731 | ||
9c541725 | 6732 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6733 | } |
6734 | else | |
6735 | { | |
78d4d2c5 JK |
6736 | const struct signatured_type *dup_tu |
6737 | = (const struct signatured_type *) *slot; | |
6738 | ||
9c541725 | 6739 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6740 | } |
8b70b953 | 6741 | |
78d4d2c5 | 6742 | complaint (&symfile_complaints, |
9d8780f0 SM |
6743 | _("debug type entry at offset %s is duplicate to" |
6744 | " the entry at offset %s, signature %s"), | |
6745 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6746 | hex_string (header.signature)); |
78d4d2c5 JK |
6747 | } |
6748 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6749 | |
78d4d2c5 | 6750 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6751 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6752 | sect_offset_str (sect_off), | |
43988095 | 6753 | hex_string (header.signature)); |
3019eac3 | 6754 | |
78d4d2c5 JK |
6755 | info_ptr += length; |
6756 | } | |
6757 | } | |
3019eac3 | 6758 | |
78d4d2c5 JK |
6759 | /* Create the hash table of all entries in the .debug_types |
6760 | (or .debug_types.dwo) section(s). | |
6761 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6762 | otherwise it is NULL. | |
b3c8eb43 | 6763 | |
78d4d2c5 | 6764 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6765 | |
78d4d2c5 | 6766 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6767 | |
78d4d2c5 | 6768 | static void |
ed2dc618 SM |
6769 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6770 | struct dwo_file *dwo_file, | |
78d4d2c5 JK |
6771 | VEC (dwarf2_section_info_def) *types, |
6772 | htab_t &types_htab) | |
6773 | { | |
6774 | int ix; | |
6775 | struct dwarf2_section_info *section; | |
6776 | ||
6777 | if (VEC_empty (dwarf2_section_info_def, types)) | |
6778 | return; | |
348e048f | 6779 | |
78d4d2c5 JK |
6780 | for (ix = 0; |
6781 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
6782 | ++ix) | |
ed2dc618 SM |
6783 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, section, |
6784 | types_htab, rcuh_kind::TYPE); | |
3019eac3 DE |
6785 | } |
6786 | ||
6787 | /* Create the hash table of all entries in the .debug_types section, | |
6788 | and initialize all_type_units. | |
6789 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6790 | otherwise non-zero. */ | |
6791 | ||
6792 | static int | |
ed2dc618 | 6793 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6794 | { |
78d4d2c5 | 6795 | htab_t types_htab = NULL; |
3019eac3 | 6796 | |
ed2dc618 SM |
6797 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6798 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6799 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6800 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6801 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6802 | if (types_htab == NULL) |
6803 | { | |
6804 | dwarf2_per_objfile->signatured_types = NULL; | |
6805 | return 0; | |
6806 | } | |
6807 | ||
348e048f DE |
6808 | dwarf2_per_objfile->signatured_types = types_htab; |
6809 | ||
b2bdb8cf SM |
6810 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
6811 | dwarf2_per_objfile->all_type_units.reserve (htab_elements (types_htab)); | |
6812 | ||
6813 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, | |
6814 | &dwarf2_per_objfile->all_type_units); | |
1fd400ff | 6815 | |
348e048f DE |
6816 | return 1; |
6817 | } | |
6818 | ||
6aa5f3a6 DE |
6819 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6820 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6821 | Otherwise we find one. */ | |
6822 | ||
6823 | static struct signatured_type * | |
ed2dc618 SM |
6824 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6825 | void **slot) | |
6aa5f3a6 DE |
6826 | { |
6827 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6828 | |
b2bdb8cf SM |
6829 | if (dwarf2_per_objfile->all_type_units.size () |
6830 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6831 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6832 | |
b2bdb8cf SM |
6833 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6834 | struct signatured_type); | |
6835 | ||
6836 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6837 | sig_type->signature = sig; |
6838 | sig_type->per_cu.is_debug_types = 1; | |
6839 | if (dwarf2_per_objfile->using_index) | |
6840 | { | |
6841 | sig_type->per_cu.v.quick = | |
6842 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6843 | struct dwarf2_per_cu_quick_data); | |
6844 | } | |
6845 | ||
6846 | if (slot == NULL) | |
6847 | { | |
6848 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6849 | sig_type, INSERT); | |
6850 | } | |
6851 | gdb_assert (*slot == NULL); | |
6852 | *slot = sig_type; | |
6853 | /* The rest of sig_type must be filled in by the caller. */ | |
6854 | return sig_type; | |
6855 | } | |
6856 | ||
a2ce51a0 DE |
6857 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6858 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6859 | ||
6860 | static void | |
ed2dc618 | 6861 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6862 | struct signatured_type *sig_entry, |
6863 | struct dwo_unit *dwo_entry) | |
6864 | { | |
7ee85ab1 | 6865 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6866 | gdb_assert (! sig_entry->per_cu.queued); |
6867 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6868 | if (dwarf2_per_objfile->using_index) |
6869 | { | |
6870 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6871 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6872 | } |
6873 | else | |
6874 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6875 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6876 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6877 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6878 | gdb_assert (sig_entry->dwo_unit == NULL); |
6879 | ||
6880 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6881 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6882 | sig_entry->per_cu.length = dwo_entry->length; |
6883 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6884 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6885 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6886 | sig_entry->dwo_unit = dwo_entry; | |
6887 | } | |
6888 | ||
6889 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6890 | If we haven't read the TU yet, create the signatured_type data structure |
6891 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6892 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6893 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6894 | containing that CU. Otherwise we could end up reading several other DWO | |
6895 | files (due to comdat folding) to process the transitive closure of all the | |
6896 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6897 | type signature that it needs. | |
a2ce51a0 DE |
6898 | We only do this for .gdb_index because in the psymtab case we already have |
6899 | to read all the DWOs to build the type unit groups. */ | |
6900 | ||
6901 | static struct signatured_type * | |
6902 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6903 | { | |
518817b3 SM |
6904 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6905 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6906 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6907 | struct dwo_file *dwo_file; | |
6908 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6909 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6910 | void **slot; |
a2ce51a0 DE |
6911 | |
6912 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6913 | ||
6aa5f3a6 DE |
6914 | /* If TU skeletons have been removed then we may not have read in any |
6915 | TUs yet. */ | |
6916 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6917 | { | |
6918 | dwarf2_per_objfile->signatured_types | |
6919 | = allocate_signatured_type_table (objfile); | |
6920 | } | |
a2ce51a0 DE |
6921 | |
6922 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6923 | Use the global signatured_types array to do our own comdat-folding |
6924 | of types. If this is the first time we're reading this TU, and | |
6925 | the TU has an entry in .gdb_index, replace the recorded data from | |
6926 | .gdb_index with this TU. */ | |
a2ce51a0 | 6927 | |
a2ce51a0 | 6928 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
6929 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
6930 | &find_sig_entry, INSERT); | |
9a3c8263 | 6931 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6932 | |
6933 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6934 | read. Don't reassign the global entry to point to this DWO if that's |
6935 | the case. Also note that if the TU is already being read, it may not | |
6936 | have come from a DWO, the program may be a mix of Fission-compiled | |
6937 | code and non-Fission-compiled code. */ | |
6938 | ||
6939 | /* Have we already tried to read this TU? | |
6940 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6941 | needn't exist in the global table yet). */ | |
6942 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6943 | return sig_entry; |
6944 | ||
6aa5f3a6 DE |
6945 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6946 | dwo_unit of the TU itself. */ | |
6947 | dwo_file = cu->dwo_unit->dwo_file; | |
6948 | ||
a2ce51a0 DE |
6949 | /* Ok, this is the first time we're reading this TU. */ |
6950 | if (dwo_file->tus == NULL) | |
6951 | return NULL; | |
6952 | find_dwo_entry.signature = sig; | |
9a3c8263 | 6953 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
6954 | if (dwo_entry == NULL) |
6955 | return NULL; | |
6956 | ||
6aa5f3a6 DE |
6957 | /* If the global table doesn't have an entry for this TU, add one. */ |
6958 | if (sig_entry == NULL) | |
ed2dc618 | 6959 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6960 | |
ed2dc618 | 6961 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6962 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6963 | return sig_entry; |
6964 | } | |
6965 | ||
a2ce51a0 DE |
6966 | /* Subroutine of lookup_signatured_type. |
6967 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6968 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6969 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6970 | |
6971 | static struct signatured_type * | |
6972 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6973 | { | |
518817b3 SM |
6974 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6975 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 6976 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 6977 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6978 | struct dwo_unit *dwo_entry; |
6979 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6980 | void **slot; |
a2ce51a0 DE |
6981 | |
6982 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6983 | gdb_assert (dwp_file != NULL); | |
6984 | ||
6aa5f3a6 DE |
6985 | /* If TU skeletons have been removed then we may not have read in any |
6986 | TUs yet. */ | |
6987 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 6988 | { |
6aa5f3a6 DE |
6989 | dwarf2_per_objfile->signatured_types |
6990 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
6991 | } |
6992 | ||
6aa5f3a6 DE |
6993 | find_sig_entry.signature = sig; |
6994 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6995 | &find_sig_entry, INSERT); | |
9a3c8263 | 6996 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6997 | |
6998 | /* Have we already tried to read this TU? | |
6999 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7000 | needn't exist in the global table yet). */ | |
7001 | if (sig_entry != NULL) | |
7002 | return sig_entry; | |
7003 | ||
a2ce51a0 DE |
7004 | if (dwp_file->tus == NULL) |
7005 | return NULL; | |
ed2dc618 | 7006 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 7007 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
7008 | if (dwo_entry == NULL) |
7009 | return NULL; | |
7010 | ||
ed2dc618 SM |
7011 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
7012 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 7013 | |
a2ce51a0 DE |
7014 | return sig_entry; |
7015 | } | |
7016 | ||
380bca97 | 7017 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7018 | Returns NULL if signature SIG is not present in the table. |
7019 | It is up to the caller to complain about this. */ | |
348e048f DE |
7020 | |
7021 | static struct signatured_type * | |
a2ce51a0 | 7022 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7023 | { |
518817b3 SM |
7024 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7025 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7026 | |
a2ce51a0 DE |
7027 | if (cu->dwo_unit |
7028 | && dwarf2_per_objfile->using_index) | |
7029 | { | |
7030 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7031 | These cases require special processing. */ | |
ed2dc618 | 7032 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7033 | return lookup_dwo_signatured_type (cu, sig); |
7034 | else | |
7035 | return lookup_dwp_signatured_type (cu, sig); | |
7036 | } | |
7037 | else | |
7038 | { | |
7039 | struct signatured_type find_entry, *entry; | |
348e048f | 7040 | |
a2ce51a0 DE |
7041 | if (dwarf2_per_objfile->signatured_types == NULL) |
7042 | return NULL; | |
7043 | find_entry.signature = sig; | |
9a3c8263 SM |
7044 | entry = ((struct signatured_type *) |
7045 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7046 | return entry; |
7047 | } | |
348e048f | 7048 | } |
42e7ad6c DE |
7049 | \f |
7050 | /* Low level DIE reading support. */ | |
348e048f | 7051 | |
d85a05f0 DJ |
7052 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7053 | ||
7054 | static void | |
7055 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7056 | struct dwarf2_cu *cu, |
3019eac3 | 7057 | struct dwarf2_section_info *section, |
685af9cd TT |
7058 | struct dwo_file *dwo_file, |
7059 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7060 | { |
fceca515 | 7061 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7062 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7063 | reader->cu = cu; |
3019eac3 | 7064 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7065 | reader->die_section = section; |
7066 | reader->buffer = section->buffer; | |
f664829e | 7067 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7068 | reader->comp_dir = NULL; |
685af9cd | 7069 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7070 | } |
7071 | ||
b0c7bfa9 DE |
7072 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7073 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
7074 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
7075 | already. | |
7076 | ||
7077 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7078 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7079 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7080 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7081 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7082 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7083 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7084 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7085 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7086 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7087 | kept around for at least as long as *RESULT_READER. | |
7088 | ||
b0c7bfa9 DE |
7089 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7090 | ||
7091 | static int | |
7092 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7093 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7094 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7095 | const char *stub_comp_dir, |
b0c7bfa9 | 7096 | struct die_reader_specs *result_reader, |
d521ce57 | 7097 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7098 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7099 | int *result_has_children, |
7100 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7101 | { |
ed2dc618 | 7102 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7103 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7104 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7105 | bfd *abfd; |
d521ce57 | 7106 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7107 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7108 | int i,num_extra_attrs; | |
7109 | struct dwarf2_section_info *dwo_abbrev_section; | |
7110 | struct attribute *attr; | |
7111 | struct die_info *comp_unit_die; | |
7112 | ||
b0aeadb3 DE |
7113 | /* At most one of these may be provided. */ |
7114 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7115 | |
b0c7bfa9 DE |
7116 | /* These attributes aren't processed until later: |
7117 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7118 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7119 | referenced later. However, these attributes are found in the stub | |
7120 | which we won't have later. In order to not impose this complication | |
7121 | on the rest of the code, we read them here and copy them to the | |
7122 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7123 | |
7124 | stmt_list = NULL; | |
7125 | low_pc = NULL; | |
7126 | high_pc = NULL; | |
7127 | ranges = NULL; | |
7128 | comp_dir = NULL; | |
7129 | ||
7130 | if (stub_comp_unit_die != NULL) | |
7131 | { | |
7132 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7133 | DWO file. */ | |
7134 | if (! this_cu->is_debug_types) | |
7135 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7136 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7137 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7138 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7139 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7140 | ||
7141 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
7142 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
7143 | cu->addr_base = 0; | |
7144 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
7145 | if (attr) | |
7146 | cu->addr_base = DW_UNSND (attr); | |
7147 | ||
7148 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
7149 | We need the value before we can process DW_AT_ranges. */ | |
7150 | cu->ranges_base = 0; | |
7151 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
7152 | if (attr) | |
7153 | cu->ranges_base = DW_UNSND (attr); | |
7154 | } | |
a2ce51a0 DE |
7155 | else if (stub_comp_dir != NULL) |
7156 | { | |
7157 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7158 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7159 | comp_dir->name = DW_AT_comp_dir; |
7160 | comp_dir->form = DW_FORM_string; | |
7161 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7162 | DW_STRING (comp_dir) = stub_comp_dir; | |
7163 | } | |
b0c7bfa9 DE |
7164 | |
7165 | /* Set up for reading the DWO CU/TU. */ | |
7166 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7167 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7168 | dwarf2_read_section (objfile, section); |
a32a8923 | 7169 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7170 | begin_info_ptr = info_ptr = (section->buffer |
7171 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7172 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7173 | |
7174 | if (this_cu->is_debug_types) | |
7175 | { | |
b0c7bfa9 DE |
7176 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7177 | ||
ed2dc618 SM |
7178 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7179 | &cu->header, section, | |
b0c7bfa9 | 7180 | dwo_abbrev_section, |
43988095 | 7181 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7182 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7183 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7184 | { |
7185 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7186 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7187 | hex_string (sig_type->signature), |
43988095 | 7188 | hex_string (cu->header.signature), |
9d8780f0 | 7189 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7190 | bfd_get_filename (abfd)); |
7191 | } | |
9c541725 | 7192 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7193 | /* For DWOs coming from DWP files, we don't know the CU length |
7194 | nor the type's offset in the TU until now. */ | |
7195 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7196 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7197 | |
7198 | /* Establish the type offset that can be used to lookup the type. | |
7199 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7200 | sig_type->type_offset_in_section |
7201 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7202 | } |
7203 | else | |
7204 | { | |
ed2dc618 SM |
7205 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7206 | &cu->header, section, | |
b0c7bfa9 | 7207 | dwo_abbrev_section, |
43988095 | 7208 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7209 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7210 | /* For DWOs coming from DWP files, we don't know the CU length |
7211 | until now. */ | |
7212 | dwo_unit->length = get_cu_length (&cu->header); | |
7213 | } | |
7214 | ||
685af9cd TT |
7215 | *result_dwo_abbrev_table |
7216 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7217 | cu->header.abbrev_sect_off); | |
7218 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7219 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7220 | |
7221 | /* Read in the die, but leave space to copy over the attributes | |
7222 | from the stub. This has the benefit of simplifying the rest of | |
7223 | the code - all the work to maintain the illusion of a single | |
7224 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7225 | num_extra_attrs = ((stmt_list != NULL) | |
7226 | + (low_pc != NULL) | |
7227 | + (high_pc != NULL) | |
7228 | + (ranges != NULL) | |
7229 | + (comp_dir != NULL)); | |
7230 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7231 | result_has_children, num_extra_attrs); | |
7232 | ||
7233 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7234 | comp_unit_die = *result_comp_unit_die; | |
7235 | i = comp_unit_die->num_attrs; | |
7236 | if (stmt_list != NULL) | |
7237 | comp_unit_die->attrs[i++] = *stmt_list; | |
7238 | if (low_pc != NULL) | |
7239 | comp_unit_die->attrs[i++] = *low_pc; | |
7240 | if (high_pc != NULL) | |
7241 | comp_unit_die->attrs[i++] = *high_pc; | |
7242 | if (ranges != NULL) | |
7243 | comp_unit_die->attrs[i++] = *ranges; | |
7244 | if (comp_dir != NULL) | |
7245 | comp_unit_die->attrs[i++] = *comp_dir; | |
7246 | comp_unit_die->num_attrs += num_extra_attrs; | |
7247 | ||
b4f54984 | 7248 | if (dwarf_die_debug) |
bf6af496 DE |
7249 | { |
7250 | fprintf_unfiltered (gdb_stdlog, | |
7251 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7252 | get_section_name (section), |
bf6af496 DE |
7253 | (unsigned) (begin_info_ptr - section->buffer), |
7254 | bfd_get_filename (abfd)); | |
b4f54984 | 7255 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7256 | } |
7257 | ||
a2ce51a0 DE |
7258 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7259 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7260 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7261 | to get it via circuitous means. Blech. */ | |
7262 | if (comp_dir != NULL) | |
7263 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7264 | ||
b0c7bfa9 DE |
7265 | /* Skip dummy compilation units. */ |
7266 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7267 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7268 | return 0; | |
7269 | ||
7270 | *result_info_ptr = info_ptr; | |
7271 | return 1; | |
7272 | } | |
7273 | ||
7274 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
7275 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 7276 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7277 | |
7278 | static struct dwo_unit * | |
7279 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
7280 | struct die_info *comp_unit_die) | |
7281 | { | |
7282 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 DE |
7283 | ULONGEST signature; |
7284 | struct dwo_unit *dwo_unit; | |
7285 | const char *comp_dir, *dwo_name; | |
7286 | ||
a2ce51a0 DE |
7287 | gdb_assert (cu != NULL); |
7288 | ||
b0c7bfa9 | 7289 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
7290 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
7291 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
7292 | |
7293 | if (this_cu->is_debug_types) | |
7294 | { | |
7295 | struct signatured_type *sig_type; | |
7296 | ||
7297 | /* Since this_cu is the first member of struct signatured_type, | |
7298 | we can go from a pointer to one to a pointer to the other. */ | |
7299 | sig_type = (struct signatured_type *) this_cu; | |
7300 | signature = sig_type->signature; | |
7301 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
7302 | } | |
7303 | else | |
7304 | { | |
7305 | struct attribute *attr; | |
7306 | ||
7307 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7308 | if (! attr) | |
7309 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
7310 | " [in module %s]"), | |
e3b94546 | 7311 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 DE |
7312 | signature = DW_UNSND (attr); |
7313 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
7314 | signature); | |
7315 | } | |
7316 | ||
b0c7bfa9 DE |
7317 | return dwo_unit; |
7318 | } | |
7319 | ||
a2ce51a0 | 7320 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 | 7321 | See it for a description of the parameters. |
fcd3b13d | 7322 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 DE |
7323 | |
7324 | static void | |
6aa5f3a6 DE |
7325 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
7326 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
7327 | die_reader_func_ftype *die_reader_func, |
7328 | void *data) | |
7329 | { | |
fcd3b13d | 7330 | std::unique_ptr<dwarf2_cu> new_cu; |
a2ce51a0 | 7331 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7332 | struct die_reader_specs reader; |
7333 | const gdb_byte *info_ptr; | |
7334 | struct die_info *comp_unit_die; | |
7335 | int has_children; | |
ed2dc618 | 7336 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
a2ce51a0 DE |
7337 | |
7338 | /* Verify we can do the following downcast, and that we have the | |
7339 | data we need. */ | |
7340 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7341 | sig_type = (struct signatured_type *) this_cu; | |
7342 | gdb_assert (sig_type->dwo_unit != NULL); | |
7343 | ||
6aa5f3a6 DE |
7344 | if (use_existing_cu && this_cu->cu != NULL) |
7345 | { | |
7346 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 DE |
7347 | /* There's no need to do the rereading_dwo_cu handling that |
7348 | init_cutu_and_read_dies does since we don't read the stub. */ | |
7349 | } | |
7350 | else | |
7351 | { | |
7352 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7353 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d | 7354 | new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7355 | } |
7356 | ||
7357 | /* A future optimization, if needed, would be to use an existing | |
7358 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7359 | could share abbrev tables. */ | |
a2ce51a0 | 7360 | |
685af9cd TT |
7361 | /* The abbreviation table used by READER, this must live at least as long as |
7362 | READER. */ | |
7363 | abbrev_table_up dwo_abbrev_table; | |
7364 | ||
a2ce51a0 | 7365 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7366 | NULL /* stub_comp_unit_die */, |
7367 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7368 | &reader, &info_ptr, | |
685af9cd TT |
7369 | &comp_unit_die, &has_children, |
7370 | &dwo_abbrev_table) == 0) | |
a2ce51a0 DE |
7371 | { |
7372 | /* Dummy die. */ | |
a2ce51a0 DE |
7373 | return; |
7374 | } | |
7375 | ||
7376 | /* All the "real" work is done here. */ | |
7377 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7378 | ||
6aa5f3a6 | 7379 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
7380 | but the alternative is making the latter more complex. |
7381 | This function is only for the special case of using DWO files directly: | |
7382 | no point in overly complicating the general case just to handle this. */ | |
fcd3b13d | 7383 | if (new_cu != NULL && keep) |
a2ce51a0 | 7384 | { |
fcd3b13d SM |
7385 | /* Link this CU into read_in_chain. */ |
7386 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7387 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7388 | /* The chain owns it now. */ | |
7389 | new_cu.release (); | |
a2ce51a0 | 7390 | } |
a2ce51a0 DE |
7391 | } |
7392 | ||
fd820528 | 7393 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7394 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7395 | |
f4dc4d17 DE |
7396 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7397 | Otherwise the table specified in the comp unit header is read in and used. | |
7398 | This is an optimization for when we already have the abbrev table. | |
7399 | ||
dee91e82 DE |
7400 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7401 | Otherwise, a new CU is allocated with xmalloc. | |
7402 | ||
7403 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
7404 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
7405 | ||
7406 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 7407 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 7408 | |
70221824 | 7409 | static void |
fd820528 | 7410 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 7411 | struct abbrev_table *abbrev_table, |
fd820528 DE |
7412 | int use_existing_cu, int keep, |
7413 | die_reader_func_ftype *die_reader_func, | |
7414 | void *data) | |
c906108c | 7415 | { |
ed2dc618 | 7416 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7417 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7418 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7419 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7420 | struct dwarf2_cu *cu; |
d521ce57 | 7421 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7422 | struct die_reader_specs reader; |
d85a05f0 | 7423 | struct die_info *comp_unit_die; |
dee91e82 | 7424 | int has_children; |
d85a05f0 | 7425 | struct attribute *attr; |
dee91e82 | 7426 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7427 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7428 | /* Non-zero if CU currently points to a DWO file and we need to |
7429 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7430 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7431 | int rereading_dwo_cu = 0; |
c906108c | 7432 | |
b4f54984 | 7433 | if (dwarf_die_debug) |
9d8780f0 | 7434 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7435 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7436 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7437 | |
dee91e82 DE |
7438 | if (use_existing_cu) |
7439 | gdb_assert (keep); | |
23745b47 | 7440 | |
a2ce51a0 DE |
7441 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7442 | file (instead of going through the stub), short-circuit all of this. */ | |
7443 | if (this_cu->reading_dwo_directly) | |
7444 | { | |
7445 | /* Narrow down the scope of possibilities to have to understand. */ | |
7446 | gdb_assert (this_cu->is_debug_types); | |
7447 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
7448 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
7449 | die_reader_func, data); | |
a2ce51a0 DE |
7450 | return; |
7451 | } | |
7452 | ||
dee91e82 DE |
7453 | /* This is cheap if the section is already read in. */ |
7454 | dwarf2_read_section (objfile, section); | |
7455 | ||
9c541725 | 7456 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7457 | |
7458 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7459 | |
fcd3b13d | 7460 | std::unique_ptr<dwarf2_cu> new_cu; |
dee91e82 DE |
7461 | if (use_existing_cu && this_cu->cu != NULL) |
7462 | { | |
7463 | cu = this_cu->cu; | |
42e7ad6c DE |
7464 | /* If this CU is from a DWO file we need to start over, we need to |
7465 | refetch the attributes from the skeleton CU. | |
7466 | This could be optimized by retrieving those attributes from when we | |
7467 | were here the first time: the previous comp_unit_die was stored in | |
7468 | comp_unit_obstack. But there's no data yet that we need this | |
7469 | optimization. */ | |
7470 | if (cu->dwo_unit != NULL) | |
7471 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7472 | } |
7473 | else | |
7474 | { | |
7475 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7476 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d SM |
7477 | new_cu.reset (new dwarf2_cu (this_cu)); |
7478 | cu = new_cu.get (); | |
42e7ad6c | 7479 | } |
dee91e82 | 7480 | |
b0c7bfa9 | 7481 | /* Get the header. */ |
9c541725 | 7482 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7483 | { |
7484 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7485 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7486 | } |
7487 | else | |
7488 | { | |
3019eac3 | 7489 | if (this_cu->is_debug_types) |
dee91e82 | 7490 | { |
ed2dc618 SM |
7491 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7492 | &cu->header, section, | |
4bdcc0c1 | 7493 | abbrev_section, info_ptr, |
43988095 | 7494 | rcuh_kind::TYPE); |
dee91e82 | 7495 | |
42e7ad6c DE |
7496 | /* Since per_cu is the first member of struct signatured_type, |
7497 | we can go from a pointer to one to a pointer to the other. */ | |
7498 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7499 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7500 | gdb_assert (sig_type->type_offset_in_tu |
7501 | == cu->header.type_cu_offset_in_tu); | |
7502 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7503 | |
42e7ad6c DE |
7504 | /* LENGTH has not been set yet for type units if we're |
7505 | using .gdb_index. */ | |
1ce1cefd | 7506 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7507 | |
7508 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7509 | sig_type->type_offset_in_section = |
7510 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7511 | |
7512 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7513 | } |
7514 | else | |
7515 | { | |
ed2dc618 SM |
7516 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7517 | &cu->header, section, | |
4bdcc0c1 | 7518 | abbrev_section, |
43988095 JK |
7519 | info_ptr, |
7520 | rcuh_kind::COMPILE); | |
dee91e82 | 7521 | |
9c541725 | 7522 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7523 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7524 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7525 | } |
7526 | } | |
10b3939b | 7527 | |
6caca83c | 7528 | /* Skip dummy compilation units. */ |
dee91e82 | 7529 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7530 | || peek_abbrev_code (abfd, info_ptr) == 0) |
fcd3b13d | 7531 | return; |
6caca83c | 7532 | |
433df2d4 DE |
7533 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7534 | And if we need to read them now, make sure they're freed when we're | |
685af9cd TT |
7535 | done (own the table through ABBREV_TABLE_HOLDER). */ |
7536 | abbrev_table_up abbrev_table_holder; | |
f4dc4d17 | 7537 | if (abbrev_table != NULL) |
685af9cd TT |
7538 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7539 | else | |
f4dc4d17 | 7540 | { |
685af9cd TT |
7541 | abbrev_table_holder |
7542 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7543 | cu->header.abbrev_sect_off); | |
7544 | abbrev_table = abbrev_table_holder.get (); | |
42e7ad6c | 7545 | } |
af703f96 | 7546 | |
dee91e82 | 7547 | /* Read the top level CU/TU die. */ |
685af9cd | 7548 | init_cu_die_reader (&reader, cu, section, NULL, abbrev_table); |
dee91e82 | 7549 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 7550 | |
b0c7bfa9 | 7551 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7552 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7553 | table from the DWO file and pass the ownership over to us. It will be | |
7554 | referenced from READER, so we must make sure to free it after we're done | |
7555 | with READER. | |
7556 | ||
b0c7bfa9 DE |
7557 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7558 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 | 7559 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
685af9cd | 7560 | abbrev_table_up dwo_abbrev_table; |
3019eac3 DE |
7561 | if (attr) |
7562 | { | |
3019eac3 | 7563 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7564 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7565 | |
7566 | if (has_children) | |
6a506a2d DE |
7567 | { |
7568 | complaint (&symfile_complaints, | |
7569 | _("compilation unit with DW_AT_GNU_dwo_name" | |
9d8780f0 SM |
7570 | " has children (offset %s) [in module %s]"), |
7571 | sect_offset_str (this_cu->sect_off), | |
7572 | bfd_get_filename (abfd)); | |
6a506a2d | 7573 | } |
b0c7bfa9 | 7574 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 7575 | if (dwo_unit != NULL) |
3019eac3 | 7576 | { |
6a506a2d | 7577 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7578 | comp_unit_die, NULL, |
6a506a2d | 7579 | &reader, &info_ptr, |
685af9cd TT |
7580 | &dwo_comp_unit_die, &has_children, |
7581 | &dwo_abbrev_table) == 0) | |
6a506a2d DE |
7582 | { |
7583 | /* Dummy die. */ | |
6a506a2d DE |
7584 | return; |
7585 | } | |
7586 | comp_unit_die = dwo_comp_unit_die; | |
7587 | } | |
7588 | else | |
7589 | { | |
7590 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7591 | the stub. A complaint has already been logged. There's | |
7592 | not much more we can do except pass on the stub DIE to | |
7593 | die_reader_func. We don't want to throw an error on bad | |
7594 | debug info. */ | |
3019eac3 DE |
7595 | } |
7596 | } | |
7597 | ||
b0c7bfa9 | 7598 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
7599 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
7600 | ||
b0c7bfa9 | 7601 | /* Done, clean up. */ |
fcd3b13d | 7602 | if (new_cu != NULL && keep) |
348e048f | 7603 | { |
fcd3b13d SM |
7604 | /* Link this CU into read_in_chain. */ |
7605 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7606 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7607 | /* The chain owns it now. */ | |
7608 | new_cu.release (); | |
348e048f | 7609 | } |
dee91e82 DE |
7610 | } |
7611 | ||
33e80786 DE |
7612 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
7613 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
7614 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7615 | |
7616 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7617 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7618 | |
7619 | We fill in THIS_CU->length. | |
7620 | ||
7621 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
7622 | linker) then DIE_READER_FUNC will not get called. | |
7623 | ||
7624 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7625 | This is done in order to not leave THIS_CU->cu in a state where we have |
7626 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
7627 | |
7628 | static void | |
7629 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 7630 | struct dwo_file *dwo_file, |
dee91e82 DE |
7631 | die_reader_func_ftype *die_reader_func, |
7632 | void *data) | |
7633 | { | |
ed2dc618 | 7634 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7635 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7636 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7637 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 7638 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7639 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7640 | struct die_reader_specs reader; |
dee91e82 DE |
7641 | struct die_info *comp_unit_die; |
7642 | int has_children; | |
7643 | ||
b4f54984 | 7644 | if (dwarf_die_debug) |
9d8780f0 | 7645 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7646 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7647 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7648 | |
dee91e82 DE |
7649 | gdb_assert (this_cu->cu == NULL); |
7650 | ||
33e80786 DE |
7651 | abbrev_section = (dwo_file != NULL |
7652 | ? &dwo_file->sections.abbrev | |
7653 | : get_abbrev_section_for_cu (this_cu)); | |
7654 | ||
dee91e82 DE |
7655 | /* This is cheap if the section is already read in. */ |
7656 | dwarf2_read_section (objfile, section); | |
7657 | ||
fcd3b13d | 7658 | struct dwarf2_cu cu (this_cu); |
dee91e82 | 7659 | |
9c541725 | 7660 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 SM |
7661 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7662 | &cu.header, section, | |
4bdcc0c1 | 7663 | abbrev_section, info_ptr, |
43988095 JK |
7664 | (this_cu->is_debug_types |
7665 | ? rcuh_kind::TYPE | |
7666 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7667 | |
1ce1cefd | 7668 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
7669 | |
7670 | /* Skip dummy compilation units. */ | |
7671 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7672 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
fcd3b13d | 7673 | return; |
72bf9492 | 7674 | |
685af9cd TT |
7675 | abbrev_table_up abbrev_table |
7676 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7677 | cu.header.abbrev_sect_off); | |
dee91e82 | 7678 | |
685af9cd | 7679 | init_cu_die_reader (&reader, &cu, section, dwo_file, abbrev_table.get ()); |
dee91e82 DE |
7680 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
7681 | ||
7682 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
dee91e82 DE |
7683 | } |
7684 | ||
3019eac3 DE |
7685 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
7686 | does not lookup the specified DWO file. | |
7687 | This cannot be used to read DWO files. | |
dee91e82 DE |
7688 | |
7689 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7690 | This is done in order to not leave THIS_CU->cu in a state where we have |
7691 | to care whether it refers to the "main" CU or the DWO CU. | |
7692 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
7693 | |
7694 | static void | |
7695 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
7696 | die_reader_func_ftype *die_reader_func, | |
7697 | void *data) | |
7698 | { | |
33e80786 | 7699 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 7700 | } |
0018ea6f DE |
7701 | \f |
7702 | /* Type Unit Groups. | |
dee91e82 | 7703 | |
0018ea6f DE |
7704 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7705 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7706 | so that all types coming from the same compilation (.o file) are grouped | |
7707 | together. A future step could be to put the types in the same symtab as | |
7708 | the CU the types ultimately came from. */ | |
ff013f42 | 7709 | |
f4dc4d17 DE |
7710 | static hashval_t |
7711 | hash_type_unit_group (const void *item) | |
7712 | { | |
9a3c8263 SM |
7713 | const struct type_unit_group *tu_group |
7714 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7715 | |
094b34ac | 7716 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7717 | } |
348e048f DE |
7718 | |
7719 | static int | |
f4dc4d17 | 7720 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7721 | { |
9a3c8263 SM |
7722 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7723 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7724 | |
094b34ac | 7725 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7726 | } |
348e048f | 7727 | |
f4dc4d17 DE |
7728 | /* Allocate a hash table for type unit groups. */ |
7729 | ||
7730 | static htab_t | |
ed2dc618 | 7731 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
7732 | { |
7733 | return htab_create_alloc_ex (3, | |
7734 | hash_type_unit_group, | |
7735 | eq_type_unit_group, | |
7736 | NULL, | |
ed2dc618 | 7737 | &objfile->objfile_obstack, |
f4dc4d17 DE |
7738 | hashtab_obstack_allocate, |
7739 | dummy_obstack_deallocate); | |
7740 | } | |
dee91e82 | 7741 | |
f4dc4d17 DE |
7742 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7743 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7744 | of any one psymtab grow too big. */ | |
7745 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7746 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7747 | |
094b34ac | 7748 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7749 | Create the type_unit_group object used to hold one or more TUs. */ |
7750 | ||
7751 | static struct type_unit_group * | |
094b34ac | 7752 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7753 | { |
518817b3 SM |
7754 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7755 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7756 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7757 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7758 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7759 | |
7760 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7761 | struct type_unit_group); | |
094b34ac | 7762 | per_cu = &tu_group->per_cu; |
518817b3 | 7763 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7764 | |
094b34ac DE |
7765 | if (dwarf2_per_objfile->using_index) |
7766 | { | |
7767 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7768 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7769 | } |
7770 | else | |
7771 | { | |
9c541725 | 7772 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac DE |
7773 | struct partial_symtab *pst; |
7774 | char *name; | |
7775 | ||
7776 | /* Give the symtab a useful name for debug purposes. */ | |
7777 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
7778 | name = xstrprintf ("<type_units_%d>", | |
7779 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
7780 | else | |
7781 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
7782 | ||
7783 | pst = create_partial_symtab (per_cu, name); | |
7784 | pst->anonymous = 1; | |
f4dc4d17 | 7785 | |
094b34ac DE |
7786 | xfree (name); |
7787 | } | |
f4dc4d17 | 7788 | |
094b34ac | 7789 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7790 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7791 | |
7792 | return tu_group; | |
7793 | } | |
7794 | ||
094b34ac DE |
7795 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7796 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7797 | |
7798 | static struct type_unit_group * | |
ff39bb5e | 7799 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7800 | { |
518817b3 SM |
7801 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7802 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7803 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7804 | struct type_unit_group *tu_group; | |
7805 | void **slot; | |
7806 | unsigned int line_offset; | |
7807 | struct type_unit_group type_unit_group_for_lookup; | |
7808 | ||
7809 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
7810 | { | |
7811 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 7812 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
7813 | } |
7814 | ||
7815 | /* Do we need to create a new group, or can we use an existing one? */ | |
7816 | ||
7817 | if (stmt_list) | |
7818 | { | |
7819 | line_offset = DW_UNSND (stmt_list); | |
7820 | ++tu_stats->nr_symtab_sharers; | |
7821 | } | |
7822 | else | |
7823 | { | |
7824 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7825 | We can do various things here like create one group per TU or | |
7826 | spread them over multiple groups to split up the expansion work. | |
7827 | To avoid worst case scenarios (too many groups or too large groups) | |
7828 | we, umm, group them in bunches. */ | |
7829 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7830 | | (tu_stats->nr_stmt_less_type_units | |
7831 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7832 | ++tu_stats->nr_stmt_less_type_units; | |
7833 | } | |
7834 | ||
094b34ac | 7835 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7836 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
7837 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
7838 | &type_unit_group_for_lookup, INSERT); | |
7839 | if (*slot != NULL) | |
7840 | { | |
9a3c8263 | 7841 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7842 | gdb_assert (tu_group != NULL); |
7843 | } | |
7844 | else | |
7845 | { | |
9c541725 | 7846 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7847 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7848 | *slot = tu_group; |
7849 | ++tu_stats->nr_symtabs; | |
7850 | } | |
7851 | ||
7852 | return tu_group; | |
7853 | } | |
0018ea6f DE |
7854 | \f |
7855 | /* Partial symbol tables. */ | |
7856 | ||
7857 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7858 | ||
7859 | The caller must fill in the following details: | |
7860 | dirname, textlow, texthigh. */ | |
7861 | ||
7862 | static struct partial_symtab * | |
7863 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
7864 | { | |
e3b94546 | 7865 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
0018ea6f DE |
7866 | struct partial_symtab *pst; |
7867 | ||
18a94d75 | 7868 | pst = start_psymtab_common (objfile, name, 0, |
af5bf4ad SM |
7869 | objfile->global_psymbols, |
7870 | objfile->static_psymbols); | |
0018ea6f DE |
7871 | |
7872 | pst->psymtabs_addrmap_supported = 1; | |
7873 | ||
7874 | /* This is the glue that links PST into GDB's symbol API. */ | |
7875 | pst->read_symtab_private = per_cu; | |
7876 | pst->read_symtab = dwarf2_read_symtab; | |
7877 | per_cu->v.psymtab = pst; | |
7878 | ||
7879 | return pst; | |
7880 | } | |
7881 | ||
b93601f3 TT |
7882 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
7883 | type. */ | |
7884 | ||
7885 | struct process_psymtab_comp_unit_data | |
7886 | { | |
7887 | /* True if we are reading a DW_TAG_partial_unit. */ | |
7888 | ||
7889 | int want_partial_unit; | |
7890 | ||
7891 | /* The "pretend" language that is used if the CU doesn't declare a | |
7892 | language. */ | |
7893 | ||
7894 | enum language pretend_language; | |
7895 | }; | |
7896 | ||
0018ea6f DE |
7897 | /* die_reader_func for process_psymtab_comp_unit. */ |
7898 | ||
7899 | static void | |
7900 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7901 | const gdb_byte *info_ptr, |
0018ea6f DE |
7902 | struct die_info *comp_unit_die, |
7903 | int has_children, | |
7904 | void *data) | |
7905 | { | |
7906 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7907 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7908 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7909 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7910 | CORE_ADDR baseaddr; |
7911 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
7912 | struct partial_symtab *pst; | |
3a2b436a | 7913 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7914 | const char *filename; |
9a3c8263 SM |
7915 | struct process_psymtab_comp_unit_data *info |
7916 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 7917 | |
b93601f3 | 7918 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
7919 | return; |
7920 | ||
7921 | gdb_assert (! per_cu->is_debug_types); | |
7922 | ||
b93601f3 | 7923 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
7924 | |
7925 | cu->list_in_scope = &file_symbols; | |
7926 | ||
7927 | /* Allocate a new partial symbol table structure. */ | |
7d45c7c3 KB |
7928 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7929 | if (filename == NULL) | |
0018ea6f | 7930 | filename = ""; |
0018ea6f DE |
7931 | |
7932 | pst = create_partial_symtab (per_cu, filename); | |
7933 | ||
7934 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7935 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
7936 | |
7937 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7938 | ||
7939 | dwarf2_find_base_address (comp_unit_die, cu); | |
7940 | ||
7941 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7942 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7943 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7944 | &best_highpc, cu, pst); | |
7945 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
0018ea6f DE |
7946 | /* Store the contiguous range if it is not empty; it can be empty for |
7947 | CUs with no code. */ | |
7948 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
7949 | gdbarch_adjust_dwarf2_addr (gdbarch, |
7950 | best_lowpc + baseaddr), | |
7951 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
7952 | best_highpc + baseaddr) - 1, | |
7953 | pst); | |
0018ea6f DE |
7954 | |
7955 | /* Check if comp unit has_children. | |
7956 | If so, read the rest of the partial symbols from this comp unit. | |
7957 | If not, there's no more debug_info for this comp unit. */ | |
7958 | if (has_children) | |
7959 | { | |
7960 | struct partial_die_info *first_die; | |
7961 | CORE_ADDR lowpc, highpc; | |
7962 | ||
7963 | lowpc = ((CORE_ADDR) -1); | |
7964 | highpc = ((CORE_ADDR) 0); | |
7965 | ||
7966 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7967 | ||
7968 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7969 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7970 | |
7971 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7972 | complaints from `maint check'. */ | |
7973 | if (lowpc == ((CORE_ADDR) -1)) | |
7974 | lowpc = highpc; | |
7975 | ||
7976 | /* If the compilation unit didn't have an explicit address range, | |
7977 | then use the information extracted from its child dies. */ | |
e385593e | 7978 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7979 | { |
7980 | best_lowpc = lowpc; | |
7981 | best_highpc = highpc; | |
7982 | } | |
7983 | } | |
3e29f34a MR |
7984 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
7985 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f | 7986 | |
8763cede | 7987 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
7988 | |
7989 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
7990 | { | |
7991 | int i; | |
7992 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
7993 | struct dwarf2_per_cu_data *iter; | |
7994 | ||
7995 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7996 | post-pass. */ | |
7997 | pst->number_of_dependencies = len; | |
8d749320 SM |
7998 | pst->dependencies = |
7999 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
0018ea6f DE |
8000 | for (i = 0; |
8001 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
8002 | i, iter); | |
8003 | ++i) | |
8004 | pst->dependencies[i] = iter->v.psymtab; | |
8005 | ||
8006 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8007 | } | |
8008 | ||
8009 | /* Get the list of files included in the current compilation unit, | |
8010 | and build a psymtab for each of them. */ | |
8011 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8012 | ||
b4f54984 | 8013 | if (dwarf_read_debug) |
0018ea6f DE |
8014 | { |
8015 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8016 | ||
8017 | fprintf_unfiltered (gdb_stdlog, | |
9d8780f0 | 8018 | "Psymtab for %s unit @%s: %s - %s" |
0018ea6f DE |
8019 | ", %d global, %d static syms\n", |
8020 | per_cu->is_debug_types ? "type" : "comp", | |
9d8780f0 | 8021 | sect_offset_str (per_cu->sect_off), |
0018ea6f DE |
8022 | paddress (gdbarch, pst->textlow), |
8023 | paddress (gdbarch, pst->texthigh), | |
8024 | pst->n_global_syms, pst->n_static_syms); | |
8025 | } | |
8026 | } | |
8027 | ||
8028 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8029 | Process compilation unit THIS_CU for a psymtab. */ | |
8030 | ||
8031 | static void | |
8032 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8033 | int want_partial_unit, |
8034 | enum language pretend_language) | |
0018ea6f DE |
8035 | { |
8036 | /* If this compilation unit was already read in, free the | |
8037 | cached copy in order to read it in again. This is | |
8038 | necessary because we skipped some symbols when we first | |
8039 | read in the compilation unit (see load_partial_dies). | |
8040 | This problem could be avoided, but the benefit is unclear. */ | |
8041 | if (this_cu->cu != NULL) | |
8042 | free_one_cached_comp_unit (this_cu); | |
8043 | ||
f1902523 JK |
8044 | if (this_cu->is_debug_types) |
8045 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, build_type_psymtabs_reader, | |
8046 | NULL); | |
8047 | else | |
8048 | { | |
8049 | process_psymtab_comp_unit_data info; | |
8050 | info.want_partial_unit = want_partial_unit; | |
8051 | info.pretend_language = pretend_language; | |
8052 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, | |
8053 | process_psymtab_comp_unit_reader, &info); | |
8054 | } | |
0018ea6f DE |
8055 | |
8056 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8057 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8058 | } |
f4dc4d17 DE |
8059 | |
8060 | /* Reader function for build_type_psymtabs. */ | |
8061 | ||
8062 | static void | |
8063 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8064 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
8065 | struct die_info *type_unit_die, |
8066 | int has_children, | |
8067 | void *data) | |
8068 | { | |
ed2dc618 | 8069 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8070 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8071 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8072 | struct dwarf2_cu *cu = reader->cu; | |
8073 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8074 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8075 | struct type_unit_group *tu_group; |
8076 | struct attribute *attr; | |
8077 | struct partial_die_info *first_die; | |
8078 | CORE_ADDR lowpc, highpc; | |
8079 | struct partial_symtab *pst; | |
8080 | ||
8081 | gdb_assert (data == NULL); | |
0186c6a7 DE |
8082 | gdb_assert (per_cu->is_debug_types); |
8083 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8084 | |
8085 | if (! has_children) | |
8086 | return; | |
8087 | ||
8088 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8089 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8090 | |
0186c6a7 | 8091 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
8092 | |
8093 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
8094 | cu->list_in_scope = &file_symbols; | |
8095 | pst = create_partial_symtab (per_cu, ""); | |
8096 | pst->anonymous = 1; | |
8097 | ||
8098 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8099 | ||
8100 | lowpc = (CORE_ADDR) -1; | |
8101 | highpc = (CORE_ADDR) 0; | |
8102 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8103 | ||
8763cede | 8104 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8105 | } |
8106 | ||
73051182 DE |
8107 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8108 | ||
8109 | struct tu_abbrev_offset | |
8110 | { | |
b2bdb8cf SM |
8111 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
8112 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
8113 | {} | |
8114 | ||
8115 | signatured_type *sig_type; | |
73051182 DE |
8116 | sect_offset abbrev_offset; |
8117 | }; | |
8118 | ||
484cf504 | 8119 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 8120 | |
484cf504 TT |
8121 | static bool |
8122 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
8123 | const struct tu_abbrev_offset &b) | |
73051182 | 8124 | { |
484cf504 | 8125 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
8126 | } |
8127 | ||
8128 | /* Efficiently read all the type units. | |
8129 | This does the bulk of the work for build_type_psymtabs. | |
8130 | ||
8131 | The efficiency is because we sort TUs by the abbrev table they use and | |
8132 | only read each abbrev table once. In one program there are 200K TUs | |
8133 | sharing 8K abbrev tables. | |
8134 | ||
8135 | The main purpose of this function is to support building the | |
8136 | dwarf2_per_objfile->type_unit_groups table. | |
8137 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8138 | can collapse the search space by grouping them by stmt_list. | |
8139 | The savings can be significant, in the same program from above the 200K TUs | |
8140 | share 8K stmt_list tables. | |
8141 | ||
8142 | FUNC is expected to call get_type_unit_group, which will create the | |
8143 | struct type_unit_group if necessary and add it to | |
8144 | dwarf2_per_objfile->type_unit_groups. */ | |
8145 | ||
8146 | static void | |
ed2dc618 | 8147 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8148 | { |
73051182 | 8149 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 8150 | abbrev_table_up abbrev_table; |
73051182 | 8151 | sect_offset abbrev_offset; |
73051182 DE |
8152 | |
8153 | /* It's up to the caller to not call us multiple times. */ | |
8154 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8155 | ||
b2bdb8cf | 8156 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
8157 | return; |
8158 | ||
8159 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8160 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8161 | read each abbrev table in. | |
8162 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8163 | This is simpler and efficient enough for now. | |
8164 | ||
8165 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8166 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8167 | stmt_list value too so in practice this should work well. | |
8168 | ||
8169 | The basic algorithm here is: | |
8170 | ||
8171 | sort TUs by abbrev table | |
8172 | for each TU with same abbrev table: | |
8173 | read abbrev table if first user | |
8174 | read TU top level DIE | |
8175 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8176 | call FUNC */ | |
8177 | ||
b4f54984 | 8178 | if (dwarf_read_debug) |
73051182 DE |
8179 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8180 | ||
8181 | /* Sort in a separate table to maintain the order of all_type_units | |
8182 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
8183 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
8184 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
8185 | ||
8186 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
8187 | sorted_by_abbrev.emplace_back | |
8188 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
8189 | sig_type->per_cu.section, | |
8190 | sig_type->per_cu.sect_off)); | |
73051182 | 8191 | |
484cf504 TT |
8192 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
8193 | sort_tu_by_abbrev_offset); | |
73051182 | 8194 | |
9c541725 | 8195 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 8196 | |
b2bdb8cf | 8197 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 8198 | { |
73051182 DE |
8199 | /* Switch to the next abbrev table if necessary. */ |
8200 | if (abbrev_table == NULL | |
b2bdb8cf | 8201 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 8202 | { |
b2bdb8cf | 8203 | abbrev_offset = tu.abbrev_offset; |
73051182 | 8204 | abbrev_table = |
ed2dc618 SM |
8205 | abbrev_table_read_table (dwarf2_per_objfile, |
8206 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8207 | abbrev_offset); |
8208 | ++tu_stats->nr_uniq_abbrev_tables; | |
8209 | } | |
8210 | ||
b2bdb8cf | 8211 | init_cutu_and_read_dies (&tu.sig_type->per_cu, abbrev_table.get (), |
685af9cd | 8212 | 0, 0, build_type_psymtabs_reader, NULL); |
73051182 | 8213 | } |
6aa5f3a6 | 8214 | } |
73051182 | 8215 | |
6aa5f3a6 DE |
8216 | /* Print collected type unit statistics. */ |
8217 | ||
8218 | static void | |
ed2dc618 | 8219 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8220 | { |
8221 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8222 | ||
8223 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
8224 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
8225 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
8226 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
8227 | tu_stats->nr_uniq_abbrev_tables); | |
8228 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8229 | tu_stats->nr_symtabs); | |
8230 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8231 | tu_stats->nr_symtab_sharers); | |
8232 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8233 | tu_stats->nr_stmt_less_type_units); | |
8234 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8235 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8236 | } |
8237 | ||
f4dc4d17 DE |
8238 | /* Traversal function for build_type_psymtabs. */ |
8239 | ||
8240 | static int | |
8241 | build_type_psymtab_dependencies (void **slot, void *info) | |
8242 | { | |
ed2dc618 SM |
8243 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8244 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8245 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8246 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8247 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 8248 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
8249 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
8250 | struct signatured_type *iter; | |
f4dc4d17 DE |
8251 | int i; |
8252 | ||
8253 | gdb_assert (len > 0); | |
0186c6a7 | 8254 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8255 | |
8256 | pst->number_of_dependencies = len; | |
8d749320 SM |
8257 | pst->dependencies = |
8258 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
f4dc4d17 | 8259 | for (i = 0; |
0186c6a7 | 8260 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
8261 | ++i) |
8262 | { | |
0186c6a7 DE |
8263 | gdb_assert (iter->per_cu.is_debug_types); |
8264 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8265 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8266 | } |
8267 | ||
0186c6a7 | 8268 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
8269 | |
8270 | return 1; | |
8271 | } | |
8272 | ||
8273 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8274 | Build partial symbol tables for the .debug_types comp-units. */ | |
8275 | ||
8276 | static void | |
ed2dc618 | 8277 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8278 | { |
ed2dc618 | 8279 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8280 | return; |
8281 | ||
ed2dc618 | 8282 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8283 | } |
f4dc4d17 | 8284 | |
6aa5f3a6 DE |
8285 | /* Traversal function for process_skeletonless_type_unit. |
8286 | Read a TU in a DWO file and build partial symbols for it. */ | |
8287 | ||
8288 | static int | |
8289 | process_skeletonless_type_unit (void **slot, void *info) | |
8290 | { | |
8291 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8292 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8293 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8294 | struct signatured_type find_entry, *entry; |
8295 | ||
8296 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8297 | ||
8298 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8299 | { | |
8300 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8301 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8302 | } |
8303 | ||
8304 | find_entry.signature = dwo_unit->signature; | |
8305 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8306 | INSERT); | |
8307 | /* If we've already seen this type there's nothing to do. What's happening | |
8308 | is we're doing our own version of comdat-folding here. */ | |
8309 | if (*slot != NULL) | |
8310 | return 1; | |
8311 | ||
8312 | /* This does the job that create_all_type_units would have done for | |
8313 | this TU. */ | |
ed2dc618 SM |
8314 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8315 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8316 | *slot = entry; |
8317 | ||
8318 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
8319 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
8320 | build_type_psymtabs_reader, NULL); | |
8321 | ||
8322 | return 1; | |
8323 | } | |
8324 | ||
8325 | /* Traversal function for process_skeletonless_type_units. */ | |
8326 | ||
8327 | static int | |
8328 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8329 | { | |
8330 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8331 | ||
8332 | if (dwo_file->tus != NULL) | |
8333 | { | |
8334 | htab_traverse_noresize (dwo_file->tus, | |
8335 | process_skeletonless_type_unit, info); | |
8336 | } | |
8337 | ||
8338 | return 1; | |
8339 | } | |
8340 | ||
8341 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8342 | This is needed in case a TU was emitted without its skeleton. | |
8343 | Note: This can't be done until we know what all the DWO files are. */ | |
8344 | ||
8345 | static void | |
ed2dc618 | 8346 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8347 | { |
8348 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8349 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8350 | && dwarf2_per_objfile->dwo_files != NULL) |
8351 | { | |
8352 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
8353 | process_dwo_file_for_skeletonless_type_units, | |
ed2dc618 | 8354 | dwarf2_per_objfile); |
6aa5f3a6 | 8355 | } |
348e048f DE |
8356 | } |
8357 | ||
ed2dc618 | 8358 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8359 | |
8360 | static void | |
ed2dc618 | 8361 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 8362 | { |
b76e467d | 8363 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 8364 | { |
95554aad | 8365 | struct partial_symtab *pst = per_cu->v.psymtab; |
95554aad | 8366 | |
36586728 TT |
8367 | if (pst == NULL) |
8368 | continue; | |
8369 | ||
b76e467d | 8370 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8371 | { |
8372 | /* Set the 'user' field only if it is not already set. */ | |
8373 | if (pst->dependencies[j]->user == NULL) | |
8374 | pst->dependencies[j]->user = pst; | |
8375 | } | |
8376 | } | |
8377 | } | |
8378 | ||
93311388 DE |
8379 | /* Build the partial symbol table by doing a quick pass through the |
8380 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8381 | |
93311388 | 8382 | static void |
ed2dc618 | 8383 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8384 | { |
ed2dc618 | 8385 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8386 | |
b4f54984 | 8387 | if (dwarf_read_debug) |
45cfd468 DE |
8388 | { |
8389 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8390 | objfile_name (objfile)); |
45cfd468 DE |
8391 | } |
8392 | ||
98bfdba5 PA |
8393 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8394 | ||
be391dca | 8395 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8396 | |
93311388 DE |
8397 | /* Any cached compilation units will be linked by the per-objfile |
8398 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8399 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8400 | |
ed2dc618 | 8401 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8402 | |
ed2dc618 | 8403 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8404 | |
60606b2c TT |
8405 | /* Create a temporary address map on a temporary obstack. We later |
8406 | copy this to the final obstack. */ | |
8268c778 | 8407 | auto_obstack temp_obstack; |
791afaa2 TT |
8408 | |
8409 | scoped_restore save_psymtabs_addrmap | |
8410 | = make_scoped_restore (&objfile->psymtabs_addrmap, | |
8411 | addrmap_create_mutable (&temp_obstack)); | |
72bf9492 | 8412 | |
b76e467d SM |
8413 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
8414 | process_psymtab_comp_unit (per_cu, 0, language_minimal); | |
ff013f42 | 8415 | |
6aa5f3a6 | 8416 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8417 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8418 | |
8419 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8420 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8421 | { | |
8422 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8423 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8424 | } |
8425 | ||
b4f54984 | 8426 | if (dwarf_read_debug) |
ed2dc618 | 8427 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8428 | |
ed2dc618 | 8429 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8430 | |
ff013f42 JK |
8431 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
8432 | &objfile->objfile_obstack); | |
791afaa2 TT |
8433 | /* At this point we want to keep the address map. */ |
8434 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8435 | |
b4f54984 | 8436 | if (dwarf_read_debug) |
45cfd468 | 8437 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8438 | objfile_name (objfile)); |
ae038cb0 DJ |
8439 | } |
8440 | ||
3019eac3 | 8441 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
8442 | |
8443 | static void | |
dee91e82 | 8444 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 8445 | const gdb_byte *info_ptr, |
dee91e82 DE |
8446 | struct die_info *comp_unit_die, |
8447 | int has_children, | |
8448 | void *data) | |
ae038cb0 | 8449 | { |
dee91e82 | 8450 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 8451 | |
95554aad | 8452 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 8453 | |
ae038cb0 DJ |
8454 | /* Check if comp unit has_children. |
8455 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 8456 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 8457 | if (has_children) |
dee91e82 DE |
8458 | load_partial_dies (reader, info_ptr, 0); |
8459 | } | |
98bfdba5 | 8460 | |
dee91e82 DE |
8461 | /* Load the partial DIEs for a secondary CU into memory. |
8462 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8463 | |
dee91e82 DE |
8464 | static void |
8465 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8466 | { | |
f4dc4d17 DE |
8467 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
8468 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
8469 | } |
8470 | ||
ae038cb0 | 8471 | static void |
ed2dc618 | 8472 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8473 | struct dwarf2_section_info *section, |
f1902523 | 8474 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8475 | unsigned int is_dwz) |
ae038cb0 | 8476 | { |
d521ce57 | 8477 | const gdb_byte *info_ptr; |
ed2dc618 | 8478 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8479 | |
b4f54984 | 8480 | if (dwarf_read_debug) |
bf6af496 | 8481 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8482 | get_section_name (section), |
8483 | get_section_file_name (section)); | |
bf6af496 | 8484 | |
36586728 | 8485 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8486 | |
36586728 | 8487 | info_ptr = section->buffer; |
6e70227d | 8488 | |
36586728 | 8489 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8490 | { |
ae038cb0 | 8491 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8492 | |
9c541725 | 8493 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8494 | |
f1902523 | 8495 | comp_unit_head cu_header; |
ed2dc618 SM |
8496 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8497 | abbrev_section, info_ptr, | |
8498 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8499 | |
8500 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8501 | if (cu_header.unit_type != DW_UT_type) |
8502 | { | |
8503 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8504 | struct dwarf2_per_cu_data); | |
8505 | memset (this_cu, 0, sizeof (*this_cu)); | |
8506 | } | |
8507 | else | |
8508 | { | |
8509 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8510 | struct signatured_type); | |
8511 | memset (sig_type, 0, sizeof (*sig_type)); | |
8512 | sig_type->signature = cu_header.signature; | |
8513 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8514 | this_cu = &sig_type->per_cu; | |
8515 | } | |
8516 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8517 | this_cu->sect_off = sect_off; |
f1902523 | 8518 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8519 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8520 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8521 | this_cu->section = section; |
ae038cb0 | 8522 | |
b76e467d | 8523 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8524 | |
8525 | info_ptr = info_ptr + this_cu->length; | |
8526 | } | |
36586728 TT |
8527 | } |
8528 | ||
8529 | /* Create a list of all compilation units in OBJFILE. | |
8530 | This is only done for -readnow and building partial symtabs. */ | |
8531 | ||
8532 | static void | |
ed2dc618 | 8533 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8534 | { |
b76e467d | 8535 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 8536 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 8537 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 8538 | |
b76e467d | 8539 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 8540 | if (dwz != NULL) |
ed2dc618 | 8541 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8542 | 1); |
c906108c SS |
8543 | } |
8544 | ||
5734ee8b | 8545 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8546 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8547 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8548 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8549 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8550 | |
72bf9492 DJ |
8551 | static void |
8552 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8553 | CORE_ADDR *highpc, int set_addrmap, |
8554 | struct dwarf2_cu *cu) | |
c906108c | 8555 | { |
72bf9492 | 8556 | struct partial_die_info *pdi; |
c906108c | 8557 | |
91c24f0a DC |
8558 | /* Now, march along the PDI's, descending into ones which have |
8559 | interesting children but skipping the children of the other ones, | |
8560 | until we reach the end of the compilation unit. */ | |
c906108c | 8561 | |
72bf9492 | 8562 | pdi = first_die; |
91c24f0a | 8563 | |
72bf9492 DJ |
8564 | while (pdi != NULL) |
8565 | { | |
52356b79 | 8566 | pdi->fixup (cu); |
c906108c | 8567 | |
f55ee35c | 8568 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8569 | children, so we need to look at them. Ditto for anonymous |
8570 | enums. */ | |
933c6fe4 | 8571 | |
72bf9492 | 8572 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8573 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8574 | || pdi->tag == DW_TAG_imported_unit |
8575 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8576 | { |
72bf9492 | 8577 | switch (pdi->tag) |
c906108c SS |
8578 | { |
8579 | case DW_TAG_subprogram: | |
b1dc1806 | 8580 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8581 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8582 | break; |
72929c62 | 8583 | case DW_TAG_constant: |
c906108c SS |
8584 | case DW_TAG_variable: |
8585 | case DW_TAG_typedef: | |
91c24f0a | 8586 | case DW_TAG_union_type: |
72bf9492 | 8587 | if (!pdi->is_declaration) |
63d06c5c | 8588 | { |
72bf9492 | 8589 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8590 | } |
8591 | break; | |
c906108c | 8592 | case DW_TAG_class_type: |
680b30c7 | 8593 | case DW_TAG_interface_type: |
c906108c | 8594 | case DW_TAG_structure_type: |
72bf9492 | 8595 | if (!pdi->is_declaration) |
c906108c | 8596 | { |
72bf9492 | 8597 | add_partial_symbol (pdi, cu); |
c906108c | 8598 | } |
b7fee5a3 KS |
8599 | if ((cu->language == language_rust |
8600 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8601 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8602 | set_addrmap, cu); | |
c906108c | 8603 | break; |
91c24f0a | 8604 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8605 | if (!pdi->is_declaration) |
8606 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8607 | break; |
8608 | case DW_TAG_base_type: | |
a02abb62 | 8609 | case DW_TAG_subrange_type: |
c906108c | 8610 | /* File scope base type definitions are added to the partial |
c5aa993b | 8611 | symbol table. */ |
72bf9492 | 8612 | add_partial_symbol (pdi, cu); |
c906108c | 8613 | break; |
d9fa45fe | 8614 | case DW_TAG_namespace: |
cdc07690 | 8615 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8616 | break; |
5d7cb8df | 8617 | case DW_TAG_module: |
cdc07690 | 8618 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 8619 | break; |
95554aad TT |
8620 | case DW_TAG_imported_unit: |
8621 | { | |
8622 | struct dwarf2_per_cu_data *per_cu; | |
8623 | ||
f4dc4d17 DE |
8624 | /* For now we don't handle imported units in type units. */ |
8625 | if (cu->per_cu->is_debug_types) | |
8626 | { | |
8627 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8628 | " supported in type units [in module %s]"), | |
518817b3 | 8629 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8630 | } |
8631 | ||
e3b94546 SM |
8632 | per_cu = dwarf2_find_containing_comp_unit |
8633 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8634 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8635 | |
8636 | /* Go read the partial unit, if needed. */ | |
8637 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8638 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8639 | |
f4dc4d17 | 8640 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 8641 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
8642 | } |
8643 | break; | |
74921315 KS |
8644 | case DW_TAG_imported_declaration: |
8645 | add_partial_symbol (pdi, cu); | |
8646 | break; | |
c906108c SS |
8647 | default: |
8648 | break; | |
8649 | } | |
8650 | } | |
8651 | ||
72bf9492 DJ |
8652 | /* If the die has a sibling, skip to the sibling. */ |
8653 | ||
8654 | pdi = pdi->die_sibling; | |
8655 | } | |
8656 | } | |
8657 | ||
8658 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8659 | |
72bf9492 | 8660 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8661 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8662 | Enumerators are an exception; they use the scope of their parent |
8663 | enumeration type, i.e. the name of the enumeration type is not | |
8664 | prepended to the enumerator. | |
91c24f0a | 8665 | |
72bf9492 DJ |
8666 | There are two complexities. One is DW_AT_specification; in this |
8667 | case "parent" means the parent of the target of the specification, | |
8668 | instead of the direct parent of the DIE. The other is compilers | |
8669 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8670 | the fully qualified name of structure types from their members' | |
8671 | linkage names. This must be done using the DIE's children rather | |
8672 | than the children of any DW_AT_specification target. We only need | |
8673 | to do this for structures at the top level, i.e. if the target of | |
8674 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8675 | have a parent. */ | |
8676 | ||
8677 | /* Compute the scope prefix associated with PDI's parent, in | |
8678 | compilation unit CU. The result will be allocated on CU's | |
8679 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8680 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8681 | static const char * |
72bf9492 DJ |
8682 | partial_die_parent_scope (struct partial_die_info *pdi, |
8683 | struct dwarf2_cu *cu) | |
8684 | { | |
15d034d0 | 8685 | const char *grandparent_scope; |
72bf9492 | 8686 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8687 | |
72bf9492 DJ |
8688 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8689 | then this means the parent of the specification DIE. */ | |
8690 | ||
8691 | real_pdi = pdi; | |
72bf9492 | 8692 | while (real_pdi->has_specification) |
36586728 TT |
8693 | real_pdi = find_partial_die (real_pdi->spec_offset, |
8694 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
8695 | |
8696 | parent = real_pdi->die_parent; | |
8697 | if (parent == NULL) | |
8698 | return NULL; | |
8699 | ||
8700 | if (parent->scope_set) | |
8701 | return parent->scope; | |
8702 | ||
52356b79 | 8703 | parent->fixup (cu); |
72bf9492 | 8704 | |
10b3939b | 8705 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8706 | |
acebe513 UW |
8707 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8708 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8709 | Work around this problem here. */ | |
8710 | if (cu->language == language_cplus | |
6e70227d | 8711 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8712 | && strcmp (parent->name, "::") == 0 |
8713 | && grandparent_scope == NULL) | |
8714 | { | |
8715 | parent->scope = NULL; | |
8716 | parent->scope_set = 1; | |
8717 | return NULL; | |
8718 | } | |
8719 | ||
9c6c53f7 SA |
8720 | if (pdi->tag == DW_TAG_enumerator) |
8721 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8722 | parent->scope = grandparent_scope; | |
8723 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8724 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8725 | || parent->tag == DW_TAG_structure_type |
8726 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8727 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
8728 | || parent->tag == DW_TAG_union_type |
8729 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
8730 | { |
8731 | if (grandparent_scope == NULL) | |
8732 | parent->scope = parent->name; | |
8733 | else | |
3e43a32a MS |
8734 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8735 | grandparent_scope, | |
f55ee35c | 8736 | parent->name, 0, cu); |
72bf9492 | 8737 | } |
72bf9492 DJ |
8738 | else |
8739 | { | |
8740 | /* FIXME drow/2004-04-01: What should we be doing with | |
8741 | function-local names? For partial symbols, we should probably be | |
8742 | ignoring them. */ | |
8743 | complaint (&symfile_complaints, | |
9d8780f0 SM |
8744 | _("unhandled containing DIE tag %d for DIE at %s"), |
8745 | parent->tag, sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8746 | parent->scope = grandparent_scope; |
c906108c SS |
8747 | } |
8748 | ||
72bf9492 DJ |
8749 | parent->scope_set = 1; |
8750 | return parent->scope; | |
8751 | } | |
8752 | ||
8753 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8754 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8755 | |
72bf9492 DJ |
8756 | static char * |
8757 | partial_die_full_name (struct partial_die_info *pdi, | |
8758 | struct dwarf2_cu *cu) | |
8759 | { | |
15d034d0 | 8760 | const char *parent_scope; |
72bf9492 | 8761 | |
98bfdba5 PA |
8762 | /* If this is a template instantiation, we can not work out the |
8763 | template arguments from partial DIEs. So, unfortunately, we have | |
8764 | to go through the full DIEs. At least any work we do building | |
8765 | types here will be reused if full symbols are loaded later. */ | |
8766 | if (pdi->has_template_arguments) | |
8767 | { | |
52356b79 | 8768 | pdi->fixup (cu); |
98bfdba5 PA |
8769 | |
8770 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8771 | { | |
8772 | struct die_info *die; | |
8773 | struct attribute attr; | |
8774 | struct dwarf2_cu *ref_cu = cu; | |
8775 | ||
b64f50a1 | 8776 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8777 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8778 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8779 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8780 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8781 | ||
8782 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
8783 | } | |
8784 | } | |
8785 | ||
72bf9492 DJ |
8786 | parent_scope = partial_die_parent_scope (pdi, cu); |
8787 | if (parent_scope == NULL) | |
8788 | return NULL; | |
8789 | else | |
f55ee35c | 8790 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
8791 | } |
8792 | ||
8793 | static void | |
72bf9492 | 8794 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8795 | { |
518817b3 SM |
8796 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8797 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8798 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8799 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8800 | CORE_ADDR addr = 0; |
15d034d0 | 8801 | const char *actual_name = NULL; |
e142c38c | 8802 | CORE_ADDR baseaddr; |
15d034d0 | 8803 | char *built_actual_name; |
e142c38c DJ |
8804 | |
8805 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 8806 | |
15d034d0 TT |
8807 | built_actual_name = partial_die_full_name (pdi, cu); |
8808 | if (built_actual_name != NULL) | |
8809 | actual_name = built_actual_name; | |
63d06c5c | 8810 | |
72bf9492 DJ |
8811 | if (actual_name == NULL) |
8812 | actual_name = pdi->name; | |
8813 | ||
c906108c SS |
8814 | switch (pdi->tag) |
8815 | { | |
b1dc1806 | 8816 | case DW_TAG_inlined_subroutine: |
c906108c | 8817 | case DW_TAG_subprogram: |
3e29f34a | 8818 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 8819 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 8820 | { |
2cfa0c8d JB |
8821 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
8822 | of the global scope. But in Ada, we want to be able to access | |
8823 | nested procedures globally. So all Ada subprograms are stored | |
8824 | in the global scope. */ | |
f47fb265 | 8825 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8826 | built_actual_name != NULL, |
f47fb265 MS |
8827 | VAR_DOMAIN, LOC_BLOCK, |
8828 | &objfile->global_psymbols, | |
1762568f | 8829 | addr, cu->language, objfile); |
c906108c SS |
8830 | } |
8831 | else | |
8832 | { | |
f47fb265 | 8833 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8834 | built_actual_name != NULL, |
f47fb265 MS |
8835 | VAR_DOMAIN, LOC_BLOCK, |
8836 | &objfile->static_psymbols, | |
1762568f | 8837 | addr, cu->language, objfile); |
c906108c | 8838 | } |
0c1b455e TT |
8839 | |
8840 | if (pdi->main_subprogram && actual_name != NULL) | |
8841 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8842 | break; |
72929c62 JB |
8843 | case DW_TAG_constant: |
8844 | { | |
af5bf4ad | 8845 | std::vector<partial_symbol *> *list; |
72929c62 JB |
8846 | |
8847 | if (pdi->is_external) | |
8848 | list = &objfile->global_psymbols; | |
8849 | else | |
8850 | list = &objfile->static_psymbols; | |
f47fb265 | 8851 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8852 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
1762568f | 8853 | list, 0, cu->language, objfile); |
72929c62 JB |
8854 | } |
8855 | break; | |
c906108c | 8856 | case DW_TAG_variable: |
95554aad TT |
8857 | if (pdi->d.locdesc) |
8858 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8859 | |
95554aad | 8860 | if (pdi->d.locdesc |
caac4577 JG |
8861 | && addr == 0 |
8862 | && !dwarf2_per_objfile->has_section_at_zero) | |
8863 | { | |
8864 | /* A global or static variable may also have been stripped | |
8865 | out by the linker if unused, in which case its address | |
8866 | will be nullified; do not add such variables into partial | |
8867 | symbol table then. */ | |
8868 | } | |
8869 | else if (pdi->is_external) | |
c906108c SS |
8870 | { |
8871 | /* Global Variable. | |
8872 | Don't enter into the minimal symbol tables as there is | |
8873 | a minimal symbol table entry from the ELF symbols already. | |
8874 | Enter into partial symbol table if it has a location | |
8875 | descriptor or a type. | |
8876 | If the location descriptor is missing, new_symbol will create | |
8877 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8878 | be determined from the minimal symbol table whenever the variable | |
8879 | is referenced. | |
8880 | The address for the partial symbol table entry is not | |
8881 | used by GDB, but it comes in handy for debugging partial symbol | |
8882 | table building. */ | |
8883 | ||
95554aad | 8884 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 8885 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8886 | built_actual_name != NULL, |
f47fb265 MS |
8887 | VAR_DOMAIN, LOC_STATIC, |
8888 | &objfile->global_psymbols, | |
1762568f | 8889 | addr + baseaddr, |
f47fb265 | 8890 | cu->language, objfile); |
c906108c SS |
8891 | } |
8892 | else | |
8893 | { | |
ff908ebf AW |
8894 | int has_loc = pdi->d.locdesc != NULL; |
8895 | ||
8896 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8897 | without location descriptors or constant values). */ | |
8898 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 8899 | { |
15d034d0 | 8900 | xfree (built_actual_name); |
decbce07 MS |
8901 | return; |
8902 | } | |
ff908ebf | 8903 | |
f47fb265 | 8904 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8905 | built_actual_name != NULL, |
f47fb265 MS |
8906 | VAR_DOMAIN, LOC_STATIC, |
8907 | &objfile->static_psymbols, | |
ff908ebf | 8908 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, |
f47fb265 | 8909 | cu->language, objfile); |
c906108c SS |
8910 | } |
8911 | break; | |
8912 | case DW_TAG_typedef: | |
8913 | case DW_TAG_base_type: | |
a02abb62 | 8914 | case DW_TAG_subrange_type: |
38d518c9 | 8915 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8916 | built_actual_name != NULL, |
176620f1 | 8917 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 8918 | &objfile->static_psymbols, |
1762568f | 8919 | 0, cu->language, objfile); |
c906108c | 8920 | break; |
74921315 | 8921 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
8922 | case DW_TAG_namespace: |
8923 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 8924 | built_actual_name != NULL, |
72bf9492 DJ |
8925 | VAR_DOMAIN, LOC_TYPEDEF, |
8926 | &objfile->global_psymbols, | |
1762568f | 8927 | 0, cu->language, objfile); |
72bf9492 | 8928 | break; |
530e8392 KB |
8929 | case DW_TAG_module: |
8930 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
8931 | built_actual_name != NULL, | |
8932 | MODULE_DOMAIN, LOC_TYPEDEF, | |
8933 | &objfile->global_psymbols, | |
1762568f | 8934 | 0, cu->language, objfile); |
530e8392 | 8935 | break; |
c906108c | 8936 | case DW_TAG_class_type: |
680b30c7 | 8937 | case DW_TAG_interface_type: |
c906108c SS |
8938 | case DW_TAG_structure_type: |
8939 | case DW_TAG_union_type: | |
8940 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8941 | /* Skip external references. The DWARF standard says in the section |
8942 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8943 | structure, union or class type is represented by a structure, | |
8944 | union or class entry that does not have a byte size attribute | |
8945 | and that has a DW_AT_declaration attribute." */ | |
8946 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 8947 | { |
15d034d0 | 8948 | xfree (built_actual_name); |
decbce07 MS |
8949 | return; |
8950 | } | |
fa4028e9 | 8951 | |
63d06c5c DC |
8952 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8953 | static vs. global. */ | |
38d518c9 | 8954 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8955 | built_actual_name != NULL, |
176620f1 | 8956 | STRUCT_DOMAIN, LOC_TYPEDEF, |
9c37b5ae | 8957 | cu->language == language_cplus |
63d06c5c DC |
8958 | ? &objfile->global_psymbols |
8959 | : &objfile->static_psymbols, | |
1762568f | 8960 | 0, cu->language, objfile); |
c906108c | 8961 | |
c906108c SS |
8962 | break; |
8963 | case DW_TAG_enumerator: | |
38d518c9 | 8964 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8965 | built_actual_name != NULL, |
176620f1 | 8966 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 8967 | cu->language == language_cplus |
f6fe98ef DJ |
8968 | ? &objfile->global_psymbols |
8969 | : &objfile->static_psymbols, | |
1762568f | 8970 | 0, cu->language, objfile); |
c906108c SS |
8971 | break; |
8972 | default: | |
8973 | break; | |
8974 | } | |
5c4e30ca | 8975 | |
15d034d0 | 8976 | xfree (built_actual_name); |
c906108c SS |
8977 | } |
8978 | ||
5c4e30ca DC |
8979 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8980 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8981 | the name of the enclosing namespace. */ | |
91c24f0a | 8982 | |
72bf9492 DJ |
8983 | static void |
8984 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8985 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8986 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8987 | { |
72bf9492 | 8988 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8989 | |
72bf9492 | 8990 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8991 | |
8992 | /* Now scan partial symbols in that namespace. */ | |
8993 | ||
91c24f0a | 8994 | if (pdi->has_children) |
cdc07690 | 8995 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8996 | } |
8997 | ||
5d7cb8df JK |
8998 | /* Read a partial die corresponding to a Fortran module. */ |
8999 | ||
9000 | static void | |
9001 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9002 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9003 | { |
530e8392 KB |
9004 | /* Add a symbol for the namespace. */ |
9005 | ||
9006 | add_partial_symbol (pdi, cu); | |
9007 | ||
f55ee35c | 9008 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9009 | |
9010 | if (pdi->has_children) | |
cdc07690 | 9011 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9012 | } |
9013 | ||
b1dc1806 XR |
9014 | /* Read a partial die corresponding to a subprogram or an inlined |
9015 | subprogram and create a partial symbol for that subprogram. | |
9016 | When the CU language allows it, this routine also defines a partial | |
9017 | symbol for each nested subprogram that this subprogram contains. | |
9018 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9019 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9020 | |
cdc07690 YQ |
9021 | PDI may also be a lexical block, in which case we simply search |
9022 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9023 | Again, this is only performed when the CU language allows this |
9024 | type of definitions. */ | |
9025 | ||
9026 | static void | |
9027 | add_partial_subprogram (struct partial_die_info *pdi, | |
9028 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9029 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9030 | { |
b1dc1806 | 9031 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9032 | { |
9033 | if (pdi->has_pc_info) | |
9034 | { | |
9035 | if (pdi->lowpc < *lowpc) | |
9036 | *lowpc = pdi->lowpc; | |
9037 | if (pdi->highpc > *highpc) | |
9038 | *highpc = pdi->highpc; | |
cdc07690 | 9039 | if (set_addrmap) |
5734ee8b | 9040 | { |
518817b3 | 9041 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9042 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9043 | CORE_ADDR baseaddr; | |
9044 | CORE_ADDR highpc; | |
9045 | CORE_ADDR lowpc; | |
5734ee8b DJ |
9046 | |
9047 | baseaddr = ANOFFSET (objfile->section_offsets, | |
9048 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
9049 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
9050 | pdi->lowpc + baseaddr); | |
9051 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
9052 | pdi->highpc + baseaddr); | |
9053 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 9054 | cu->per_cu->v.psymtab); |
5734ee8b | 9055 | } |
481860b3 GB |
9056 | } |
9057 | ||
9058 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9059 | { | |
bc30ff58 | 9060 | if (!pdi->is_declaration) |
e8d05480 JB |
9061 | /* Ignore subprogram DIEs that do not have a name, they are |
9062 | illegal. Do not emit a complaint at this point, we will | |
9063 | do so when we convert this psymtab into a symtab. */ | |
9064 | if (pdi->name) | |
9065 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9066 | } |
9067 | } | |
6e70227d | 9068 | |
bc30ff58 JB |
9069 | if (! pdi->has_children) |
9070 | return; | |
9071 | ||
9072 | if (cu->language == language_ada) | |
9073 | { | |
9074 | pdi = pdi->die_child; | |
9075 | while (pdi != NULL) | |
9076 | { | |
52356b79 | 9077 | pdi->fixup (cu); |
bc30ff58 | 9078 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 9079 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9080 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9081 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9082 | pdi = pdi->die_sibling; |
9083 | } | |
9084 | } | |
9085 | } | |
9086 | ||
91c24f0a DC |
9087 | /* Read a partial die corresponding to an enumeration type. */ |
9088 | ||
72bf9492 DJ |
9089 | static void |
9090 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9091 | struct dwarf2_cu *cu) | |
91c24f0a | 9092 | { |
72bf9492 | 9093 | struct partial_die_info *pdi; |
91c24f0a DC |
9094 | |
9095 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9096 | add_partial_symbol (enum_pdi, cu); |
9097 | ||
9098 | pdi = enum_pdi->die_child; | |
9099 | while (pdi) | |
91c24f0a | 9100 | { |
72bf9492 | 9101 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 9102 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 9103 | else |
72bf9492 DJ |
9104 | add_partial_symbol (pdi, cu); |
9105 | pdi = pdi->die_sibling; | |
91c24f0a | 9106 | } |
91c24f0a DC |
9107 | } |
9108 | ||
6caca83c CC |
9109 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9110 | ||
9111 | static unsigned int | |
d521ce57 | 9112 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9113 | { |
9114 | unsigned int bytes_read; | |
9115 | ||
9116 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9117 | } | |
9118 | ||
685af9cd TT |
9119 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9120 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9121 | ||
4bb7a0a7 DJ |
9122 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9123 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9124 | the initial number. */ | |
9125 | ||
9126 | static struct abbrev_info * | |
685af9cd TT |
9127 | peek_die_abbrev (const die_reader_specs &reader, |
9128 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9129 | { |
685af9cd | 9130 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9131 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9132 | unsigned int abbrev_number |
9133 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9134 | |
9135 | if (abbrev_number == 0) | |
9136 | return NULL; | |
9137 | ||
685af9cd | 9138 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9139 | if (!abbrev) |
9140 | { | |
422b9917 | 9141 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 9142 | " at offset %s [in module %s]"), |
422b9917 | 9143 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 9144 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9145 | } |
9146 | ||
9147 | return abbrev; | |
9148 | } | |
9149 | ||
93311388 DE |
9150 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9151 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9152 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9153 | ||
d521ce57 TT |
9154 | static const gdb_byte * |
9155 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9156 | { |
4bb7a0a7 DJ |
9157 | while (1) |
9158 | { | |
685af9cd TT |
9159 | unsigned int bytes_read; |
9160 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9161 | ||
4bb7a0a7 DJ |
9162 | if (abbrev == NULL) |
9163 | return info_ptr + bytes_read; | |
9164 | else | |
dee91e82 | 9165 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9166 | } |
9167 | } | |
9168 | ||
93311388 DE |
9169 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9170 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9171 | abbrev corresponding to that skipped uleb128 should be passed in |
9172 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9173 | children. */ | |
9174 | ||
d521ce57 TT |
9175 | static const gdb_byte * |
9176 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9177 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9178 | { |
9179 | unsigned int bytes_read; | |
9180 | struct attribute attr; | |
dee91e82 DE |
9181 | bfd *abfd = reader->abfd; |
9182 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9183 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9184 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9185 | unsigned int form, i; |
9186 | ||
9187 | for (i = 0; i < abbrev->num_attrs; i++) | |
9188 | { | |
9189 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9190 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9191 | { | |
dee91e82 | 9192 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9193 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
9194 | complaint (&symfile_complaints, |
9195 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 9196 | else |
b9502d3f | 9197 | { |
9c541725 PA |
9198 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9199 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9200 | |
9201 | if (sibling_ptr < info_ptr) | |
9202 | complaint (&symfile_complaints, | |
9203 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
9204 | else if (sibling_ptr > reader->buffer_end) |
9205 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9206 | else |
9207 | return sibling_ptr; | |
9208 | } | |
4bb7a0a7 DJ |
9209 | } |
9210 | ||
9211 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9212 | form = abbrev->attrs[i].form; | |
9213 | skip_attribute: | |
9214 | switch (form) | |
9215 | { | |
4bb7a0a7 | 9216 | case DW_FORM_ref_addr: |
ae411497 TT |
9217 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9218 | and later it is offset sized. */ | |
9219 | if (cu->header.version == 2) | |
9220 | info_ptr += cu->header.addr_size; | |
9221 | else | |
9222 | info_ptr += cu->header.offset_size; | |
9223 | break; | |
36586728 TT |
9224 | case DW_FORM_GNU_ref_alt: |
9225 | info_ptr += cu->header.offset_size; | |
9226 | break; | |
ae411497 | 9227 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9228 | info_ptr += cu->header.addr_size; |
9229 | break; | |
9230 | case DW_FORM_data1: | |
9231 | case DW_FORM_ref1: | |
9232 | case DW_FORM_flag: | |
9233 | info_ptr += 1; | |
9234 | break; | |
2dc7f7b3 | 9235 | case DW_FORM_flag_present: |
43988095 | 9236 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9237 | break; |
4bb7a0a7 DJ |
9238 | case DW_FORM_data2: |
9239 | case DW_FORM_ref2: | |
9240 | info_ptr += 2; | |
9241 | break; | |
9242 | case DW_FORM_data4: | |
9243 | case DW_FORM_ref4: | |
9244 | info_ptr += 4; | |
9245 | break; | |
9246 | case DW_FORM_data8: | |
9247 | case DW_FORM_ref8: | |
55f1336d | 9248 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9249 | info_ptr += 8; |
9250 | break; | |
0224619f JK |
9251 | case DW_FORM_data16: |
9252 | info_ptr += 16; | |
9253 | break; | |
4bb7a0a7 | 9254 | case DW_FORM_string: |
9b1c24c8 | 9255 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9256 | info_ptr += bytes_read; |
9257 | break; | |
2dc7f7b3 | 9258 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9259 | case DW_FORM_strp: |
36586728 | 9260 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9261 | info_ptr += cu->header.offset_size; |
9262 | break; | |
2dc7f7b3 | 9263 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9264 | case DW_FORM_block: |
9265 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9266 | info_ptr += bytes_read; | |
9267 | break; | |
9268 | case DW_FORM_block1: | |
9269 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9270 | break; | |
9271 | case DW_FORM_block2: | |
9272 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9273 | break; | |
9274 | case DW_FORM_block4: | |
9275 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9276 | break; | |
9277 | case DW_FORM_sdata: | |
9278 | case DW_FORM_udata: | |
9279 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9280 | case DW_FORM_GNU_addr_index: |
9281 | case DW_FORM_GNU_str_index: | |
d521ce57 | 9282 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9283 | break; |
9284 | case DW_FORM_indirect: | |
9285 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9286 | info_ptr += bytes_read; | |
9287 | /* We need to continue parsing from here, so just go back to | |
9288 | the top. */ | |
9289 | goto skip_attribute; | |
9290 | ||
9291 | default: | |
3e43a32a MS |
9292 | error (_("Dwarf Error: Cannot handle %s " |
9293 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9294 | dwarf_form_name (form), |
9295 | bfd_get_filename (abfd)); | |
9296 | } | |
9297 | } | |
9298 | ||
9299 | if (abbrev->has_children) | |
dee91e82 | 9300 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9301 | else |
9302 | return info_ptr; | |
9303 | } | |
9304 | ||
93311388 | 9305 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9306 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9307 | |
d521ce57 | 9308 | static const gdb_byte * |
dee91e82 DE |
9309 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9310 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9311 | const gdb_byte *info_ptr) |
91c24f0a DC |
9312 | { |
9313 | /* Do we know the sibling already? */ | |
72bf9492 | 9314 | |
91c24f0a DC |
9315 | if (orig_pdi->sibling) |
9316 | return orig_pdi->sibling; | |
9317 | ||
9318 | /* Are there any children to deal with? */ | |
9319 | ||
9320 | if (!orig_pdi->has_children) | |
9321 | return info_ptr; | |
9322 | ||
4bb7a0a7 | 9323 | /* Skip the children the long way. */ |
91c24f0a | 9324 | |
dee91e82 | 9325 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9326 | } |
9327 | ||
257e7a09 | 9328 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9329 | not NULL. */ |
c906108c SS |
9330 | |
9331 | static void | |
257e7a09 YQ |
9332 | dwarf2_read_symtab (struct partial_symtab *self, |
9333 | struct objfile *objfile) | |
c906108c | 9334 | { |
ed2dc618 SM |
9335 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9336 | = get_dwarf2_per_objfile (objfile); | |
9337 | ||
257e7a09 | 9338 | if (self->readin) |
c906108c | 9339 | { |
442e4d9c | 9340 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 9341 | self->filename); |
442e4d9c YQ |
9342 | } |
9343 | else | |
9344 | { | |
9345 | if (info_verbose) | |
c906108c | 9346 | { |
442e4d9c | 9347 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 9348 | self->filename); |
442e4d9c | 9349 | gdb_flush (gdb_stdout); |
c906108c | 9350 | } |
c906108c | 9351 | |
442e4d9c YQ |
9352 | /* If this psymtab is constructed from a debug-only objfile, the |
9353 | has_section_at_zero flag will not necessarily be correct. We | |
9354 | can get the correct value for this flag by looking at the data | |
9355 | associated with the (presumably stripped) associated objfile. */ | |
9356 | if (objfile->separate_debug_objfile_backlink) | |
9357 | { | |
9358 | struct dwarf2_per_objfile *dpo_backlink | |
ed2dc618 | 9359 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
9a619af0 | 9360 | |
442e4d9c YQ |
9361 | dwarf2_per_objfile->has_section_at_zero |
9362 | = dpo_backlink->has_section_at_zero; | |
9363 | } | |
b2ab525c | 9364 | |
442e4d9c | 9365 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 9366 | |
257e7a09 | 9367 | psymtab_to_symtab_1 (self); |
c906108c | 9368 | |
442e4d9c YQ |
9369 | /* Finish up the debug error message. */ |
9370 | if (info_verbose) | |
9371 | printf_filtered (_("done.\n")); | |
c906108c | 9372 | } |
95554aad | 9373 | |
ed2dc618 | 9374 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9375 | } |
9cdd5dbd DE |
9376 | \f |
9377 | /* Reading in full CUs. */ | |
c906108c | 9378 | |
10b3939b DJ |
9379 | /* Add PER_CU to the queue. */ |
9380 | ||
9381 | static void | |
95554aad TT |
9382 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9383 | enum language pretend_language) | |
10b3939b DJ |
9384 | { |
9385 | struct dwarf2_queue_item *item; | |
9386 | ||
9387 | per_cu->queued = 1; | |
8d749320 | 9388 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9389 | item->per_cu = per_cu; |
95554aad | 9390 | item->pretend_language = pretend_language; |
10b3939b DJ |
9391 | item->next = NULL; |
9392 | ||
9393 | if (dwarf2_queue == NULL) | |
9394 | dwarf2_queue = item; | |
9395 | else | |
9396 | dwarf2_queue_tail->next = item; | |
9397 | ||
9398 | dwarf2_queue_tail = item; | |
9399 | } | |
9400 | ||
89e63ee4 DE |
9401 | /* If PER_CU is not yet queued, add it to the queue. |
9402 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9403 | dependency. | |
0907af0c | 9404 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9405 | meaning either PER_CU is already queued or it is already loaded. |
9406 | ||
9407 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9408 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9409 | |
9410 | static int | |
89e63ee4 | 9411 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9412 | struct dwarf2_per_cu_data *per_cu, |
9413 | enum language pretend_language) | |
9414 | { | |
9415 | /* We may arrive here during partial symbol reading, if we need full | |
9416 | DIEs to process an unusual case (e.g. template arguments). Do | |
9417 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9418 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9419 | { |
9420 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9421 | return 1; | |
9422 | return 0; | |
9423 | } | |
9424 | ||
9425 | /* Mark the dependence relation so that we don't flush PER_CU | |
9426 | too early. */ | |
89e63ee4 DE |
9427 | if (dependent_cu != NULL) |
9428 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9429 | |
9430 | /* If it's already on the queue, we have nothing to do. */ | |
9431 | if (per_cu->queued) | |
9432 | return 0; | |
9433 | ||
9434 | /* If the compilation unit is already loaded, just mark it as | |
9435 | used. */ | |
9436 | if (per_cu->cu != NULL) | |
9437 | { | |
9438 | per_cu->cu->last_used = 0; | |
9439 | return 0; | |
9440 | } | |
9441 | ||
9442 | /* Add it to the queue. */ | |
9443 | queue_comp_unit (per_cu, pretend_language); | |
9444 | ||
9445 | return 1; | |
9446 | } | |
9447 | ||
10b3939b DJ |
9448 | /* Process the queue. */ |
9449 | ||
9450 | static void | |
ed2dc618 | 9451 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9452 | { |
9453 | struct dwarf2_queue_item *item, *next_item; | |
9454 | ||
b4f54984 | 9455 | if (dwarf_read_debug) |
45cfd468 DE |
9456 | { |
9457 | fprintf_unfiltered (gdb_stdlog, | |
9458 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9459 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9460 | } |
9461 | ||
03dd20cc DJ |
9462 | /* The queue starts out with one item, but following a DIE reference |
9463 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9464 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9465 | { | |
cc12ce38 DE |
9466 | if ((dwarf2_per_objfile->using_index |
9467 | ? !item->per_cu->v.quick->compunit_symtab | |
9468 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9469 | /* Skip dummy CUs. */ | |
9470 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9471 | { |
9472 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9473 | unsigned int debug_print_threshold; |
247f5c4f | 9474 | char buf[100]; |
f4dc4d17 | 9475 | |
247f5c4f | 9476 | if (per_cu->is_debug_types) |
f4dc4d17 | 9477 | { |
247f5c4f DE |
9478 | struct signatured_type *sig_type = |
9479 | (struct signatured_type *) per_cu; | |
9480 | ||
9d8780f0 | 9481 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9482 | hex_string (sig_type->signature), |
9d8780f0 | 9483 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9484 | /* There can be 100s of TUs. |
9485 | Only print them in verbose mode. */ | |
9486 | debug_print_threshold = 2; | |
f4dc4d17 | 9487 | } |
247f5c4f | 9488 | else |
73be47f5 | 9489 | { |
9d8780f0 SM |
9490 | sprintf (buf, "CU at offset %s", |
9491 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9492 | debug_print_threshold = 1; |
9493 | } | |
247f5c4f | 9494 | |
b4f54984 | 9495 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9496 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9497 | |
9498 | if (per_cu->is_debug_types) | |
9499 | process_full_type_unit (per_cu, item->pretend_language); | |
9500 | else | |
9501 | process_full_comp_unit (per_cu, item->pretend_language); | |
9502 | ||
b4f54984 | 9503 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9504 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9505 | } |
10b3939b DJ |
9506 | |
9507 | item->per_cu->queued = 0; | |
9508 | next_item = item->next; | |
9509 | xfree (item); | |
9510 | } | |
9511 | ||
9512 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9513 | |
b4f54984 | 9514 | if (dwarf_read_debug) |
45cfd468 DE |
9515 | { |
9516 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9517 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9518 | } |
10b3939b DJ |
9519 | } |
9520 | ||
10b3939b DJ |
9521 | /* Read in full symbols for PST, and anything it depends on. */ |
9522 | ||
c906108c | 9523 | static void |
fba45db2 | 9524 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 9525 | { |
10b3939b | 9526 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
9527 | int i; |
9528 | ||
95554aad TT |
9529 | if (pst->readin) |
9530 | return; | |
9531 | ||
aaa75496 | 9532 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
9533 | if (!pst->dependencies[i]->readin |
9534 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
9535 | { |
9536 | /* Inform about additional files that need to be read in. */ | |
9537 | if (info_verbose) | |
9538 | { | |
a3f17187 | 9539 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
9540 | fputs_filtered (" ", gdb_stdout); |
9541 | wrap_here (""); | |
9542 | fputs_filtered ("and ", gdb_stdout); | |
9543 | wrap_here (""); | |
9544 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 9545 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
9546 | gdb_flush (gdb_stdout); |
9547 | } | |
9548 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
9549 | } | |
9550 | ||
9a3c8263 | 9551 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
9552 | |
9553 | if (per_cu == NULL) | |
aaa75496 JB |
9554 | { |
9555 | /* It's an include file, no symbols to read for it. | |
9556 | Everything is in the parent symtab. */ | |
9557 | pst->readin = 1; | |
9558 | return; | |
9559 | } | |
c906108c | 9560 | |
a0f42c21 | 9561 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
9562 | } |
9563 | ||
dee91e82 DE |
9564 | /* Trivial hash function for die_info: the hash value of a DIE |
9565 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9566 | |
dee91e82 DE |
9567 | static hashval_t |
9568 | die_hash (const void *item) | |
10b3939b | 9569 | { |
9a3c8263 | 9570 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9571 | |
9c541725 | 9572 | return to_underlying (die->sect_off); |
dee91e82 | 9573 | } |
63d06c5c | 9574 | |
dee91e82 DE |
9575 | /* Trivial comparison function for die_info structures: two DIEs |
9576 | are equal if they have the same offset. */ | |
98bfdba5 | 9577 | |
dee91e82 DE |
9578 | static int |
9579 | die_eq (const void *item_lhs, const void *item_rhs) | |
9580 | { | |
9a3c8263 SM |
9581 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9582 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9583 | |
9c541725 | 9584 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9585 | } |
c906108c | 9586 | |
dee91e82 DE |
9587 | /* die_reader_func for load_full_comp_unit. |
9588 | This is identical to read_signatured_type_reader, | |
9589 | but is kept separate for now. */ | |
c906108c | 9590 | |
dee91e82 DE |
9591 | static void |
9592 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 9593 | const gdb_byte *info_ptr, |
dee91e82 DE |
9594 | struct die_info *comp_unit_die, |
9595 | int has_children, | |
9596 | void *data) | |
9597 | { | |
9598 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 9599 | enum language *language_ptr = (enum language *) data; |
6caca83c | 9600 | |
dee91e82 DE |
9601 | gdb_assert (cu->die_hash == NULL); |
9602 | cu->die_hash = | |
9603 | htab_create_alloc_ex (cu->header.length / 12, | |
9604 | die_hash, | |
9605 | die_eq, | |
9606 | NULL, | |
9607 | &cu->comp_unit_obstack, | |
9608 | hashtab_obstack_allocate, | |
9609 | dummy_obstack_deallocate); | |
e142c38c | 9610 | |
dee91e82 DE |
9611 | if (has_children) |
9612 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
9613 | &info_ptr, comp_unit_die); | |
9614 | cu->dies = comp_unit_die; | |
9615 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
9616 | |
9617 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9618 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9619 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9620 | or we won't be able to build types correctly. |
9621 | Similarly, if we do not read the producer, we can not apply | |
9622 | producer-specific interpretation. */ | |
95554aad | 9623 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 9624 | } |
10b3939b | 9625 | |
dee91e82 | 9626 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 9627 | |
dee91e82 | 9628 | static void |
95554aad TT |
9629 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
9630 | enum language pretend_language) | |
dee91e82 | 9631 | { |
3019eac3 | 9632 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 9633 | |
f4dc4d17 DE |
9634 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
9635 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
9636 | } |
9637 | ||
3da10d80 KS |
9638 | /* Add a DIE to the delayed physname list. */ |
9639 | ||
9640 | static void | |
9641 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9642 | const char *name, struct die_info *die, | |
9643 | struct dwarf2_cu *cu) | |
9644 | { | |
9645 | struct delayed_method_info mi; | |
9646 | mi.type = type; | |
9647 | mi.fnfield_index = fnfield_index; | |
9648 | mi.index = index; | |
9649 | mi.name = name; | |
9650 | mi.die = die; | |
c89b44cd | 9651 | cu->method_list.push_back (mi); |
3da10d80 KS |
9652 | } |
9653 | ||
3693fdb3 PA |
9654 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9655 | "const" / "volatile". If so, decrements LEN by the length of the | |
9656 | modifier and return true. Otherwise return false. */ | |
9657 | ||
9658 | template<size_t N> | |
9659 | static bool | |
9660 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9661 | { | |
9662 | size_t mod_len = sizeof (mod) - 1; | |
9663 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9664 | { | |
9665 | len -= mod_len; | |
9666 | return true; | |
9667 | } | |
9668 | return false; | |
9669 | } | |
9670 | ||
3da10d80 KS |
9671 | /* Compute the physnames of any methods on the CU's method list. |
9672 | ||
9673 | The computation of method physnames is delayed in order to avoid the | |
9674 | (bad) condition that one of the method's formal parameters is of an as yet | |
9675 | incomplete type. */ | |
9676 | ||
9677 | static void | |
9678 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9679 | { | |
3693fdb3 | 9680 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9681 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9682 | return; |
9683 | gdb_assert (cu->language == language_cplus); | |
9684 | ||
c89b44cd | 9685 | for (struct delayed_method_info &mi : cu->method_list) |
3da10d80 | 9686 | { |
1d06ead6 | 9687 | const char *physname; |
3da10d80 | 9688 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9689 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9690 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9691 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9692 | = physname ? physname : ""; |
3693fdb3 PA |
9693 | |
9694 | /* Since there's no tag to indicate whether a method is a | |
9695 | const/volatile overload, extract that information out of the | |
9696 | demangled name. */ | |
9697 | if (physname != NULL) | |
9698 | { | |
9699 | size_t len = strlen (physname); | |
9700 | ||
9701 | while (1) | |
9702 | { | |
9703 | if (physname[len] == ')') /* shortcut */ | |
9704 | break; | |
9705 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9706 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9707 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9708 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9709 | else |
9710 | break; | |
9711 | } | |
9712 | } | |
3da10d80 | 9713 | } |
c89b44cd TT |
9714 | |
9715 | /* The list is no longer needed. */ | |
9716 | cu->method_list.clear (); | |
3da10d80 KS |
9717 | } |
9718 | ||
a766d390 DE |
9719 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9720 | and it's not clear if/how imported objects will appear. | |
9721 | To keep Go support simple until that's worked out, | |
9722 | go back through what we've read and create something usable. | |
9723 | We could do this while processing each DIE, and feels kinda cleaner, | |
9724 | but that way is more invasive. | |
9725 | This is to, for example, allow the user to type "p var" or "b main" | |
9726 | without having to specify the package name, and allow lookups | |
9727 | of module.object to work in contexts that use the expression | |
9728 | parser. */ | |
9729 | ||
9730 | static void | |
9731 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9732 | { | |
9733 | char *package_name = NULL; | |
9734 | struct pending *list; | |
9735 | int i; | |
9736 | ||
9737 | for (list = global_symbols; list != NULL; list = list->next) | |
9738 | { | |
9739 | for (i = 0; i < list->nsyms; ++i) | |
9740 | { | |
9741 | struct symbol *sym = list->symbol[i]; | |
9742 | ||
9743 | if (SYMBOL_LANGUAGE (sym) == language_go | |
9744 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
9745 | { | |
9746 | char *this_package_name = go_symbol_package_name (sym); | |
9747 | ||
9748 | if (this_package_name == NULL) | |
9749 | continue; | |
9750 | if (package_name == NULL) | |
9751 | package_name = this_package_name; | |
9752 | else | |
9753 | { | |
518817b3 SM |
9754 | struct objfile *objfile |
9755 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
a766d390 DE |
9756 | if (strcmp (package_name, this_package_name) != 0) |
9757 | complaint (&symfile_complaints, | |
9758 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
9759 | (symbol_symtab (sym) != NULL |
9760 | ? symtab_to_filename_for_display | |
9761 | (symbol_symtab (sym)) | |
e3b94546 | 9762 | : objfile_name (objfile)), |
a766d390 DE |
9763 | this_package_name, package_name); |
9764 | xfree (this_package_name); | |
9765 | } | |
9766 | } | |
9767 | } | |
9768 | } | |
9769 | ||
9770 | if (package_name != NULL) | |
9771 | { | |
518817b3 | 9772 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9773 | const char *saved_package_name |
224c3ddb SM |
9774 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
9775 | package_name, | |
9776 | strlen (package_name)); | |
19f392bc UW |
9777 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9778 | saved_package_name); | |
a766d390 DE |
9779 | struct symbol *sym; |
9780 | ||
9781 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
9782 | ||
e623cf5d | 9783 | sym = allocate_symbol (objfile); |
f85f34ed | 9784 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
9785 | SYMBOL_SET_NAMES (sym, saved_package_name, |
9786 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
9787 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9788 | e.g., "main" finds the "main" module and not C's main(). */ | |
9789 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9790 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9791 | SYMBOL_TYPE (sym) = type; |
9792 | ||
9793 | add_symbol_to_list (sym, &global_symbols); | |
9794 | ||
9795 | xfree (package_name); | |
9796 | } | |
9797 | } | |
9798 | ||
c9317f21 TT |
9799 | /* Allocate a fully-qualified name consisting of the two parts on the |
9800 | obstack. */ | |
9801 | ||
9802 | static const char * | |
9803 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9804 | { | |
9805 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9806 | } | |
9807 | ||
9808 | /* A helper that allocates a struct discriminant_info to attach to a | |
9809 | union type. */ | |
9810 | ||
9811 | static struct discriminant_info * | |
9812 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9813 | int default_index) | |
9814 | { | |
9815 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9816 | gdb_assert (discriminant_index == -1 |
9817 | || (discriminant_index >= 0 | |
9818 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9819 | gdb_assert (default_index == -1 |
c7b15a66 | 9820 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9821 | |
9822 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9823 | ||
9824 | struct discriminant_info *disc | |
9825 | = ((struct discriminant_info *) | |
9826 | TYPE_ZALLOC (type, | |
9827 | offsetof (struct discriminant_info, discriminants) | |
9828 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9829 | disc->default_index = default_index; | |
9830 | disc->discriminant_index = discriminant_index; | |
9831 | ||
9832 | struct dynamic_prop prop; | |
9833 | prop.kind = PROP_UNDEFINED; | |
9834 | prop.data.baton = disc; | |
9835 | ||
9836 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9837 | ||
9838 | return disc; | |
9839 | } | |
9840 | ||
9841 | /* Some versions of rustc emitted enums in an unusual way. | |
9842 | ||
9843 | Ordinary enums were emitted as unions. The first element of each | |
9844 | structure in the union was named "RUST$ENUM$DISR". This element | |
9845 | held the discriminant. | |
9846 | ||
9847 | These versions of Rust also implemented the "non-zero" | |
9848 | optimization. When the enum had two values, and one is empty and | |
9849 | the other holds a pointer that cannot be zero, the pointer is used | |
9850 | as the discriminant, with a zero value meaning the empty variant. | |
9851 | Here, the union's first member is of the form | |
9852 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9853 | where the fieldnos are the indices of the fields that should be | |
9854 | traversed in order to find the field (which may be several fields deep) | |
9855 | and the variantname is the name of the variant of the case when the | |
9856 | field is zero. | |
9857 | ||
9858 | This function recognizes whether TYPE is of one of these forms, | |
9859 | and, if so, smashes it to be a variant type. */ | |
9860 | ||
9861 | static void | |
9862 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9863 | { | |
9864 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9865 | ||
9866 | /* We don't need to deal with empty enums. */ | |
9867 | if (TYPE_NFIELDS (type) == 0) | |
9868 | return; | |
9869 | ||
9870 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9871 | if (TYPE_NFIELDS (type) == 1 | |
9872 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9873 | { | |
9874 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9875 | ||
9876 | /* Decode the field name to find the offset of the | |
9877 | discriminant. */ | |
9878 | ULONGEST bit_offset = 0; | |
9879 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9880 | while (name[0] >= '0' && name[0] <= '9') | |
9881 | { | |
9882 | char *tail; | |
9883 | unsigned long index = strtoul (name, &tail, 10); | |
9884 | name = tail; | |
9885 | if (*name != '$' | |
9886 | || index >= TYPE_NFIELDS (field_type) | |
9887 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9888 | != FIELD_LOC_KIND_BITPOS)) | |
9889 | { | |
9890 | complaint (&symfile_complaints, | |
9891 | _("Could not parse Rust enum encoding string \"%s\"" | |
9892 | "[in module %s]"), | |
9893 | TYPE_FIELD_NAME (type, 0), | |
9894 | objfile_name (objfile)); | |
9895 | return; | |
9896 | } | |
9897 | ++name; | |
9898 | ||
9899 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9900 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9901 | } | |
9902 | ||
9903 | /* Make a union to hold the variants. */ | |
9904 | struct type *union_type = alloc_type (objfile); | |
9905 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9906 | TYPE_NFIELDS (union_type) = 3; | |
9907 | TYPE_FIELDS (union_type) | |
9908 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
9909 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9910 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9911 | |
9912 | /* Put the discriminant must at index 0. */ | |
9913 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
9914 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9915 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9916 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
9917 | ||
9918 | /* The order of fields doesn't really matter, so put the real | |
9919 | field at index 1 and the data-less field at index 2. */ | |
9920 | struct discriminant_info *disc | |
9921 | = alloc_discriminant_info (union_type, 0, 1); | |
9922 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
9923 | TYPE_FIELD_NAME (union_type, 1) | |
9924 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
9925 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
9926 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9927 | TYPE_FIELD_NAME (union_type, 1)); | |
9928 | ||
9929 | const char *dataless_name | |
9930 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9931 | name); | |
9932 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9933 | dataless_name); | |
9934 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
9935 | /* NAME points into the original discriminant name, which | |
9936 | already has the correct lifetime. */ | |
9937 | TYPE_FIELD_NAME (union_type, 2) = name; | |
9938 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
9939 | disc->discriminants[2] = 0; | |
9940 | ||
9941 | /* Smash this type to be a structure type. We have to do this | |
9942 | because the type has already been recorded. */ | |
9943 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9944 | TYPE_NFIELDS (type) = 1; | |
9945 | TYPE_FIELDS (type) | |
9946 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
9947 | ||
9948 | /* Install the variant part. */ | |
9949 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9950 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9951 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9952 | } | |
9953 | else if (TYPE_NFIELDS (type) == 1) | |
9954 | { | |
9955 | /* We assume that a union with a single field is a univariant | |
9956 | enum. */ | |
9957 | /* Smash this type to be a structure type. We have to do this | |
9958 | because the type has already been recorded. */ | |
9959 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9960 | ||
9961 | /* Make a union to hold the variants. */ | |
9962 | struct type *union_type = alloc_type (objfile); | |
9963 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9964 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
9965 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9966 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9967 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
9968 | ||
9969 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
9970 | const char *variant_name | |
9971 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
9972 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
9973 | TYPE_NAME (field_type) | |
9974 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 9975 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
9976 | |
9977 | /* Install the union in the outer struct type. */ | |
9978 | TYPE_NFIELDS (type) = 1; | |
9979 | TYPE_FIELDS (type) | |
9980 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
9981 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9982 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9983 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9984 | ||
9985 | alloc_discriminant_info (union_type, -1, 0); | |
9986 | } | |
9987 | else | |
9988 | { | |
9989 | struct type *disr_type = nullptr; | |
9990 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
9991 | { | |
9992 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9993 | ||
a037790e TT |
9994 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
9995 | { | |
9996 | /* All fields of a true enum will be structs. */ | |
9997 | return; | |
9998 | } | |
9999 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
10000 | { |
10001 | /* Could be data-less variant, so keep going. */ | |
a037790e | 10002 | disr_type = nullptr; |
c9317f21 TT |
10003 | } |
10004 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
10005 | "RUST$ENUM$DISR") != 0) | |
10006 | { | |
10007 | /* Not a Rust enum. */ | |
10008 | return; | |
10009 | } | |
10010 | else | |
10011 | { | |
10012 | /* Found one. */ | |
10013 | break; | |
10014 | } | |
10015 | } | |
10016 | ||
10017 | /* If we got here without a discriminant, then it's probably | |
10018 | just a union. */ | |
10019 | if (disr_type == nullptr) | |
10020 | return; | |
10021 | ||
10022 | /* Smash this type to be a structure type. We have to do this | |
10023 | because the type has already been recorded. */ | |
10024 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10025 | ||
10026 | /* Make a union to hold the variants. */ | |
10027 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
10028 | struct type *union_type = alloc_type (objfile); | |
10029 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10030 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
10031 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10032 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10033 | TYPE_FIELDS (union_type) |
10034 | = (struct field *) TYPE_ZALLOC (union_type, | |
10035 | (TYPE_NFIELDS (union_type) | |
10036 | * sizeof (struct field))); | |
10037 | ||
10038 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
10039 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
10040 | ||
10041 | /* Install the discriminant at index 0 in the union. */ | |
10042 | TYPE_FIELD (union_type, 0) = *disr_field; | |
10043 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10044 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10045 | ||
10046 | /* Install the union in the outer struct type. */ | |
10047 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10048 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10049 | TYPE_NFIELDS (type) = 1; | |
10050 | ||
10051 | /* Set the size and offset of the union type. */ | |
10052 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10053 | ||
10054 | /* We need a way to find the correct discriminant given a | |
10055 | variant name. For convenience we build a map here. */ | |
10056 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
10057 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
10058 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
10059 | { | |
10060 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
10061 | { | |
10062 | const char *name | |
10063 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
10064 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
10065 | } | |
10066 | } | |
10067 | ||
10068 | int n_fields = TYPE_NFIELDS (union_type); | |
10069 | struct discriminant_info *disc | |
10070 | = alloc_discriminant_info (union_type, 0, -1); | |
10071 | /* Skip the discriminant here. */ | |
10072 | for (int i = 1; i < n_fields; ++i) | |
10073 | { | |
10074 | /* Find the final word in the name of this variant's type. | |
10075 | That name can be used to look up the correct | |
10076 | discriminant. */ | |
10077 | const char *variant_name | |
10078 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
10079 | i))); | |
10080 | ||
10081 | auto iter = discriminant_map.find (variant_name); | |
10082 | if (iter != discriminant_map.end ()) | |
10083 | disc->discriminants[i] = iter->second; | |
10084 | ||
bedda9ac | 10085 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 10086 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
10087 | if (TYPE_NFIELDS (sub_type) > 0) |
10088 | { | |
10089 | --TYPE_NFIELDS (sub_type); | |
10090 | ++TYPE_FIELDS (sub_type); | |
10091 | } | |
c9317f21 TT |
10092 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
10093 | TYPE_NAME (sub_type) | |
10094 | = rust_fully_qualify (&objfile->objfile_obstack, | |
10095 | TYPE_NAME (type), variant_name); | |
10096 | } | |
10097 | } | |
10098 | } | |
10099 | ||
10100 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
10101 | ||
10102 | static void | |
10103 | rust_union_quirks (struct dwarf2_cu *cu) | |
10104 | { | |
10105 | gdb_assert (cu->language == language_rust); | |
10106 | for (struct type *type : cu->rust_unions) | |
10107 | quirk_rust_enum (type, cu->per_cu->dwarf2_per_objfile->objfile); | |
10108 | } | |
10109 | ||
95554aad TT |
10110 | /* Return the symtab for PER_CU. This works properly regardless of |
10111 | whether we're using the index or psymtabs. */ | |
10112 | ||
43f3e411 DE |
10113 | static struct compunit_symtab * |
10114 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10115 | { |
ed2dc618 | 10116 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10117 | ? per_cu->v.quick->compunit_symtab |
10118 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10119 | } |
10120 | ||
10121 | /* A helper function for computing the list of all symbol tables | |
10122 | included by PER_CU. */ | |
10123 | ||
10124 | static void | |
43f3e411 | 10125 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 10126 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10127 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10128 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10129 | { |
10130 | void **slot; | |
10131 | int ix; | |
43f3e411 | 10132 | struct compunit_symtab *cust; |
95554aad TT |
10133 | struct dwarf2_per_cu_data *iter; |
10134 | ||
10135 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10136 | if (*slot != NULL) | |
10137 | { | |
10138 | /* This inclusion and its children have been processed. */ | |
10139 | return; | |
10140 | } | |
10141 | ||
10142 | *slot = per_cu; | |
10143 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10144 | cust = get_compunit_symtab (per_cu); |
10145 | if (cust != NULL) | |
ec94af83 DE |
10146 | { |
10147 | /* If this is a type unit only add its symbol table if we haven't | |
10148 | seen it yet (type unit per_cu's can share symtabs). */ | |
10149 | if (per_cu->is_debug_types) | |
10150 | { | |
43f3e411 | 10151 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10152 | if (*slot == NULL) |
10153 | { | |
43f3e411 DE |
10154 | *slot = cust; |
10155 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
10156 | if (cust->user == NULL) | |
10157 | cust->user = immediate_parent; | |
ec94af83 DE |
10158 | } |
10159 | } | |
10160 | else | |
f9125b6c | 10161 | { |
43f3e411 DE |
10162 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
10163 | if (cust->user == NULL) | |
10164 | cust->user = immediate_parent; | |
f9125b6c | 10165 | } |
ec94af83 | 10166 | } |
95554aad TT |
10167 | |
10168 | for (ix = 0; | |
796a7ff8 | 10169 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 10170 | ++ix) |
ec94af83 DE |
10171 | { |
10172 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 10173 | all_type_symtabs, iter, cust); |
ec94af83 | 10174 | } |
95554aad TT |
10175 | } |
10176 | ||
43f3e411 | 10177 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10178 | PER_CU. */ |
10179 | ||
10180 | static void | |
43f3e411 | 10181 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10182 | { |
f4dc4d17 DE |
10183 | gdb_assert (! per_cu->is_debug_types); |
10184 | ||
796a7ff8 | 10185 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
10186 | { |
10187 | int ix, len; | |
ec94af83 | 10188 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
10189 | struct compunit_symtab *compunit_symtab_iter; |
10190 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 10191 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10192 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10193 | |
10194 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10195 | if (cust == NULL) |
95554aad TT |
10196 | return; |
10197 | ||
10198 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10199 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10200 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10201 | NULL, xcalloc, xfree); | |
95554aad TT |
10202 | |
10203 | for (ix = 0; | |
796a7ff8 | 10204 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 10205 | ix, per_cu_iter); |
95554aad | 10206 | ++ix) |
ec94af83 DE |
10207 | { |
10208 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 10209 | all_type_symtabs, per_cu_iter, |
43f3e411 | 10210 | cust); |
ec94af83 | 10211 | } |
95554aad | 10212 | |
ec94af83 | 10213 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
10214 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
10215 | cust->includes | |
ed2dc618 | 10216 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10217 | struct compunit_symtab *, len + 1); |
95554aad | 10218 | for (ix = 0; |
43f3e411 DE |
10219 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
10220 | compunit_symtab_iter); | |
95554aad | 10221 | ++ix) |
43f3e411 DE |
10222 | cust->includes[ix] = compunit_symtab_iter; |
10223 | cust->includes[len] = NULL; | |
95554aad | 10224 | |
43f3e411 | 10225 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 10226 | htab_delete (all_children); |
ec94af83 | 10227 | htab_delete (all_type_symtabs); |
95554aad TT |
10228 | } |
10229 | } | |
10230 | ||
10231 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10232 | read. */ | |
10233 | ||
10234 | static void | |
ed2dc618 | 10235 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad TT |
10236 | { |
10237 | int ix; | |
10238 | struct dwarf2_per_cu_data *iter; | |
10239 | ||
10240 | for (ix = 0; | |
10241 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
10242 | ix, iter); | |
10243 | ++ix) | |
f4dc4d17 DE |
10244 | { |
10245 | if (! iter->is_debug_types) | |
43f3e411 | 10246 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10247 | } |
95554aad TT |
10248 | |
10249 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
10250 | } | |
10251 | ||
9cdd5dbd | 10252 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10253 | already been loaded into memory. */ |
10254 | ||
10255 | static void | |
95554aad TT |
10256 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10257 | enum language pretend_language) | |
10b3939b | 10258 | { |
10b3939b | 10259 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10260 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10261 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10262 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10263 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10264 | struct compunit_symtab *cust; |
10b3939b | 10265 | CORE_ADDR baseaddr; |
4359dff1 | 10266 | struct block *static_block; |
3e29f34a | 10267 | CORE_ADDR addr; |
10b3939b DJ |
10268 | |
10269 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
10270 | ||
10b3939b | 10271 | buildsym_init (); |
33c7c59d | 10272 | scoped_free_pendings free_pending; |
c89b44cd TT |
10273 | |
10274 | /* Clear the list here in case something was left over. */ | |
10275 | cu->method_list.clear (); | |
10b3939b DJ |
10276 | |
10277 | cu->list_in_scope = &file_symbols; | |
c906108c | 10278 | |
95554aad TT |
10279 | cu->language = pretend_language; |
10280 | cu->language_defn = language_def (cu->language); | |
10281 | ||
c906108c | 10282 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10283 | process_die (cu->dies, cu); |
c906108c | 10284 | |
a766d390 DE |
10285 | /* For now fudge the Go package. */ |
10286 | if (cu->language == language_go) | |
10287 | fixup_go_packaging (cu); | |
10288 | ||
3da10d80 KS |
10289 | /* Now that we have processed all the DIEs in the CU, all the types |
10290 | should be complete, and it should now be safe to compute all of the | |
10291 | physnames. */ | |
10292 | compute_delayed_physnames (cu); | |
3da10d80 | 10293 | |
c9317f21 TT |
10294 | if (cu->language == language_rust) |
10295 | rust_union_quirks (cu); | |
10296 | ||
fae299cd DC |
10297 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10298 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10299 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10300 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10301 | |
3e29f34a MR |
10302 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
10303 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
10304 | |
10305 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10306 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10307 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10308 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10309 | this comp unit. */ | |
10310 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10311 | ||
43f3e411 DE |
10312 | cust = end_symtab_from_static_block (static_block, |
10313 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 10314 | |
43f3e411 | 10315 | if (cust != NULL) |
c906108c | 10316 | { |
df15bd07 | 10317 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10318 | |
8be455d7 JK |
10319 | /* Set symtab language to language from DW_AT_language. If the |
10320 | compilation is from a C file generated by language preprocessors, do | |
10321 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10322 | if (!(cu->language == language_c |
40e3ad0e | 10323 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10324 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10325 | |
10326 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10327 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10328 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10329 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10330 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10331 | |
10332 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10333 | needed, it would be wrong due to missing DW_AT_producer there. | |
10334 | ||
10335 | Still one can confuse GDB by using non-standard GCC compilation | |
10336 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
10337 | */ | |
ab260dad | 10338 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10339 | cust->locations_valid = 1; |
e0d00bc7 JK |
10340 | |
10341 | if (gcc_4_minor >= 5) | |
43f3e411 | 10342 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10343 | |
43f3e411 | 10344 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10345 | } |
9291a0cd TT |
10346 | |
10347 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10348 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10349 | else |
10350 | { | |
10351 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10352 | pst->compunit_symtab = cust; |
9291a0cd TT |
10353 | pst->readin = 1; |
10354 | } | |
c906108c | 10355 | |
95554aad TT |
10356 | /* Push it for inclusion processing later. */ |
10357 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
f4dc4d17 | 10358 | } |
45cfd468 | 10359 | |
f4dc4d17 DE |
10360 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10361 | already been loaded into memory. */ | |
10362 | ||
10363 | static void | |
10364 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10365 | enum language pretend_language) | |
10366 | { | |
10367 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10368 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10369 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10370 | struct compunit_symtab *cust; |
0186c6a7 DE |
10371 | struct signatured_type *sig_type; |
10372 | ||
10373 | gdb_assert (per_cu->is_debug_types); | |
10374 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
10375 | |
10376 | buildsym_init (); | |
33c7c59d | 10377 | scoped_free_pendings free_pending; |
c89b44cd TT |
10378 | |
10379 | /* Clear the list here in case something was left over. */ | |
10380 | cu->method_list.clear (); | |
f4dc4d17 DE |
10381 | |
10382 | cu->list_in_scope = &file_symbols; | |
10383 | ||
10384 | cu->language = pretend_language; | |
10385 | cu->language_defn = language_def (cu->language); | |
10386 | ||
10387 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10388 | process_die (cu->dies, cu); | |
10389 | ||
10390 | /* For now fudge the Go package. */ | |
10391 | if (cu->language == language_go) | |
10392 | fixup_go_packaging (cu); | |
10393 | ||
10394 | /* Now that we have processed all the DIEs in the CU, all the types | |
10395 | should be complete, and it should now be safe to compute all of the | |
10396 | physnames. */ | |
10397 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10398 | |
c9317f21 TT |
10399 | if (cu->language == language_rust) |
10400 | rust_union_quirks (cu); | |
10401 | ||
f4dc4d17 DE |
10402 | /* TUs share symbol tables. |
10403 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10404 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10405 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10406 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10407 | { |
43f3e411 DE |
10408 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
10409 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 10410 | |
43f3e411 | 10411 | if (cust != NULL) |
f4dc4d17 DE |
10412 | { |
10413 | /* Set symtab language to language from DW_AT_language. If the | |
10414 | compilation is from a C file generated by language preprocessors, | |
10415 | do not set the language if it was already deduced by | |
10416 | start_subfile. */ | |
43f3e411 DE |
10417 | if (!(cu->language == language_c |
10418 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10419 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10420 | } |
10421 | } | |
10422 | else | |
10423 | { | |
0ab9ce85 | 10424 | augment_type_symtab (); |
43f3e411 | 10425 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10426 | } |
10427 | ||
10428 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10429 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10430 | else |
10431 | { | |
10432 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10433 | pst->compunit_symtab = cust; |
f4dc4d17 | 10434 | pst->readin = 1; |
45cfd468 | 10435 | } |
c906108c SS |
10436 | } |
10437 | ||
95554aad TT |
10438 | /* Process an imported unit DIE. */ |
10439 | ||
10440 | static void | |
10441 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10442 | { | |
10443 | struct attribute *attr; | |
10444 | ||
f4dc4d17 DE |
10445 | /* For now we don't handle imported units in type units. */ |
10446 | if (cu->per_cu->is_debug_types) | |
10447 | { | |
10448 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10449 | " supported in type units [in module %s]"), | |
518817b3 | 10450 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10451 | } |
10452 | ||
95554aad TT |
10453 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10454 | if (attr != NULL) | |
10455 | { | |
9c541725 PA |
10456 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10457 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10458 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10459 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10460 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10461 | |
69d751e3 | 10462 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
10463 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
10464 | load_full_comp_unit (per_cu, cu->language); | |
10465 | ||
796a7ff8 | 10466 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
10467 | per_cu); |
10468 | } | |
10469 | } | |
10470 | ||
4c8aa72d PA |
10471 | /* RAII object that represents a process_die scope: i.e., |
10472 | starts/finishes processing a DIE. */ | |
10473 | class process_die_scope | |
adde2bff | 10474 | { |
4c8aa72d PA |
10475 | public: |
10476 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10477 | : m_die (die), m_cu (cu) | |
10478 | { | |
10479 | /* We should only be processing DIEs not already in process. */ | |
10480 | gdb_assert (!m_die->in_process); | |
10481 | m_die->in_process = true; | |
10482 | } | |
8c3cb9fa | 10483 | |
4c8aa72d PA |
10484 | ~process_die_scope () |
10485 | { | |
10486 | m_die->in_process = false; | |
10487 | ||
10488 | /* If we're done processing the DIE for the CU that owns the line | |
10489 | header, we don't need the line header anymore. */ | |
10490 | if (m_cu->line_header_die_owner == m_die) | |
10491 | { | |
10492 | delete m_cu->line_header; | |
10493 | m_cu->line_header = NULL; | |
10494 | m_cu->line_header_die_owner = NULL; | |
10495 | } | |
10496 | } | |
10497 | ||
10498 | private: | |
10499 | die_info *m_die; | |
10500 | dwarf2_cu *m_cu; | |
10501 | }; | |
adde2bff | 10502 | |
c906108c SS |
10503 | /* Process a die and its children. */ |
10504 | ||
10505 | static void | |
e7c27a73 | 10506 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10507 | { |
4c8aa72d | 10508 | process_die_scope scope (die, cu); |
adde2bff | 10509 | |
c906108c SS |
10510 | switch (die->tag) |
10511 | { | |
10512 | case DW_TAG_padding: | |
10513 | break; | |
10514 | case DW_TAG_compile_unit: | |
95554aad | 10515 | case DW_TAG_partial_unit: |
e7c27a73 | 10516 | read_file_scope (die, cu); |
c906108c | 10517 | break; |
348e048f DE |
10518 | case DW_TAG_type_unit: |
10519 | read_type_unit_scope (die, cu); | |
10520 | break; | |
c906108c | 10521 | case DW_TAG_subprogram: |
c906108c | 10522 | case DW_TAG_inlined_subroutine: |
edb3359d | 10523 | read_func_scope (die, cu); |
c906108c SS |
10524 | break; |
10525 | case DW_TAG_lexical_block: | |
14898363 L |
10526 | case DW_TAG_try_block: |
10527 | case DW_TAG_catch_block: | |
e7c27a73 | 10528 | read_lexical_block_scope (die, cu); |
c906108c | 10529 | break; |
216f72a1 | 10530 | case DW_TAG_call_site: |
96408a79 SA |
10531 | case DW_TAG_GNU_call_site: |
10532 | read_call_site_scope (die, cu); | |
10533 | break; | |
c906108c | 10534 | case DW_TAG_class_type: |
680b30c7 | 10535 | case DW_TAG_interface_type: |
c906108c SS |
10536 | case DW_TAG_structure_type: |
10537 | case DW_TAG_union_type: | |
134d01f1 | 10538 | process_structure_scope (die, cu); |
c906108c SS |
10539 | break; |
10540 | case DW_TAG_enumeration_type: | |
134d01f1 | 10541 | process_enumeration_scope (die, cu); |
c906108c | 10542 | break; |
134d01f1 | 10543 | |
f792889a DJ |
10544 | /* These dies have a type, but processing them does not create |
10545 | a symbol or recurse to process the children. Therefore we can | |
10546 | read them on-demand through read_type_die. */ | |
c906108c | 10547 | case DW_TAG_subroutine_type: |
72019c9c | 10548 | case DW_TAG_set_type: |
c906108c | 10549 | case DW_TAG_array_type: |
c906108c | 10550 | case DW_TAG_pointer_type: |
c906108c | 10551 | case DW_TAG_ptr_to_member_type: |
c906108c | 10552 | case DW_TAG_reference_type: |
4297a3f0 | 10553 | case DW_TAG_rvalue_reference_type: |
c906108c | 10554 | case DW_TAG_string_type: |
c906108c | 10555 | break; |
134d01f1 | 10556 | |
c906108c | 10557 | case DW_TAG_base_type: |
a02abb62 | 10558 | case DW_TAG_subrange_type: |
cb249c71 | 10559 | case DW_TAG_typedef: |
134d01f1 DJ |
10560 | /* Add a typedef symbol for the type definition, if it has a |
10561 | DW_AT_name. */ | |
f792889a | 10562 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10563 | break; |
c906108c | 10564 | case DW_TAG_common_block: |
e7c27a73 | 10565 | read_common_block (die, cu); |
c906108c SS |
10566 | break; |
10567 | case DW_TAG_common_inclusion: | |
10568 | break; | |
d9fa45fe | 10569 | case DW_TAG_namespace: |
4d4ec4e5 | 10570 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 10571 | read_namespace (die, cu); |
d9fa45fe | 10572 | break; |
5d7cb8df | 10573 | case DW_TAG_module: |
4d4ec4e5 | 10574 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
10575 | read_module (die, cu); |
10576 | break; | |
d9fa45fe | 10577 | case DW_TAG_imported_declaration: |
74921315 KS |
10578 | cu->processing_has_namespace_info = 1; |
10579 | if (read_namespace_alias (die, cu)) | |
10580 | break; | |
10581 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 10582 | case DW_TAG_imported_module: |
4d4ec4e5 | 10583 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
10584 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10585 | || cu->language != language_fortran)) | |
10586 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
10587 | dwarf_tag_name (die->tag)); | |
10588 | read_import_statement (die, cu); | |
d9fa45fe | 10589 | break; |
95554aad TT |
10590 | |
10591 | case DW_TAG_imported_unit: | |
10592 | process_imported_unit_die (die, cu); | |
10593 | break; | |
10594 | ||
71a3c369 TT |
10595 | case DW_TAG_variable: |
10596 | read_variable (die, cu); | |
10597 | break; | |
10598 | ||
c906108c | 10599 | default: |
e7c27a73 | 10600 | new_symbol (die, NULL, cu); |
c906108c SS |
10601 | break; |
10602 | } | |
10603 | } | |
ca69b9e6 DE |
10604 | \f |
10605 | /* DWARF name computation. */ | |
c906108c | 10606 | |
94af9270 KS |
10607 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10608 | needs to have the name of the scope prepended to the name listed in the | |
10609 | die. */ | |
10610 | ||
10611 | static int | |
10612 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10613 | { | |
1c809c68 TT |
10614 | struct attribute *attr; |
10615 | ||
94af9270 KS |
10616 | switch (die->tag) |
10617 | { | |
10618 | case DW_TAG_namespace: | |
10619 | case DW_TAG_typedef: | |
10620 | case DW_TAG_class_type: | |
10621 | case DW_TAG_interface_type: | |
10622 | case DW_TAG_structure_type: | |
10623 | case DW_TAG_union_type: | |
10624 | case DW_TAG_enumeration_type: | |
10625 | case DW_TAG_enumerator: | |
10626 | case DW_TAG_subprogram: | |
08a76f8a | 10627 | case DW_TAG_inlined_subroutine: |
94af9270 | 10628 | case DW_TAG_member: |
74921315 | 10629 | case DW_TAG_imported_declaration: |
94af9270 KS |
10630 | return 1; |
10631 | ||
10632 | case DW_TAG_variable: | |
c2b0a229 | 10633 | case DW_TAG_constant: |
94af9270 KS |
10634 | /* We only need to prefix "globally" visible variables. These include |
10635 | any variable marked with DW_AT_external or any variable that | |
10636 | lives in a namespace. [Variables in anonymous namespaces | |
10637 | require prefixing, but they are not DW_AT_external.] */ | |
10638 | ||
10639 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10640 | { | |
10641 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10642 | |
94af9270 KS |
10643 | return die_needs_namespace (die_specification (die, &spec_cu), |
10644 | spec_cu); | |
10645 | } | |
10646 | ||
1c809c68 | 10647 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10648 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10649 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10650 | return 0; |
10651 | /* A variable in a lexical block of some kind does not need a | |
10652 | namespace, even though in C++ such variables may be external | |
10653 | and have a mangled name. */ | |
10654 | if (die->parent->tag == DW_TAG_lexical_block | |
10655 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10656 | || die->parent->tag == DW_TAG_catch_block |
10657 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10658 | return 0; |
10659 | return 1; | |
94af9270 KS |
10660 | |
10661 | default: | |
10662 | return 0; | |
10663 | } | |
10664 | } | |
10665 | ||
73b9be8b KS |
10666 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10667 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10668 | defined for the given DIE. */ | |
10669 | ||
10670 | static struct attribute * | |
10671 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10672 | { | |
10673 | struct attribute *attr; | |
10674 | ||
10675 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10676 | if (attr == NULL) | |
10677 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10678 | ||
10679 | return attr; | |
10680 | } | |
10681 | ||
10682 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10683 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10684 | defined for the given DIE. */ | |
10685 | ||
10686 | static const char * | |
10687 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10688 | { | |
10689 | const char *linkage_name; | |
10690 | ||
10691 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10692 | if (linkage_name == NULL) | |
10693 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10694 | ||
10695 | return linkage_name; | |
10696 | } | |
10697 | ||
94af9270 | 10698 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10699 | compute the physname for the object, which include a method's: |
9c37b5ae | 10700 | - formal parameters (C++), |
a766d390 | 10701 | - receiver type (Go), |
a766d390 DE |
10702 | |
10703 | The term "physname" is a bit confusing. | |
10704 | For C++, for example, it is the demangled name. | |
10705 | For Go, for example, it's the mangled name. | |
94af9270 | 10706 | |
af6b7be1 JB |
10707 | For Ada, return the DIE's linkage name rather than the fully qualified |
10708 | name. PHYSNAME is ignored.. | |
10709 | ||
94af9270 KS |
10710 | The result is allocated on the objfile_obstack and canonicalized. */ |
10711 | ||
10712 | static const char * | |
15d034d0 TT |
10713 | dwarf2_compute_name (const char *name, |
10714 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10715 | int physname) |
10716 | { | |
518817b3 | 10717 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10718 | |
94af9270 KS |
10719 | if (name == NULL) |
10720 | name = dwarf2_name (die, cu); | |
10721 | ||
2ee7123e DE |
10722 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10723 | but otherwise compute it by typename_concat inside GDB. | |
10724 | FIXME: Actually this is not really true, or at least not always true. | |
10725 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
5e2db402 | 10726 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10727 | will set the demangled name to the result of dwarf2_full_name, and it is |
10728 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10729 | if (cu->language == language_ada |
10730 | || (cu->language == language_fortran && physname)) | |
10731 | { | |
10732 | /* For Ada unit, we prefer the linkage name over the name, as | |
10733 | the former contains the exported name, which the user expects | |
10734 | to be able to reference. Ideally, we want the user to be able | |
10735 | to reference this entity using either natural or linkage name, | |
10736 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10737 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10738 | |
2ee7123e DE |
10739 | if (linkage_name != NULL) |
10740 | return linkage_name; | |
f55ee35c JK |
10741 | } |
10742 | ||
94af9270 KS |
10743 | /* These are the only languages we know how to qualify names in. */ |
10744 | if (name != NULL | |
9c37b5ae | 10745 | && (cu->language == language_cplus |
c44af4eb TT |
10746 | || cu->language == language_fortran || cu->language == language_d |
10747 | || cu->language == language_rust)) | |
94af9270 KS |
10748 | { |
10749 | if (die_needs_namespace (die, cu)) | |
10750 | { | |
0d5cff50 | 10751 | const char *prefix; |
34a68019 | 10752 | const char *canonical_name = NULL; |
94af9270 | 10753 | |
d7e74731 PA |
10754 | string_file buf; |
10755 | ||
94af9270 | 10756 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10757 | if (*prefix != '\0') |
10758 | { | |
f55ee35c JK |
10759 | char *prefixed_name = typename_concat (NULL, prefix, name, |
10760 | physname, cu); | |
9a619af0 | 10761 | |
d7e74731 | 10762 | buf.puts (prefixed_name); |
94af9270 KS |
10763 | xfree (prefixed_name); |
10764 | } | |
10765 | else | |
d7e74731 | 10766 | buf.puts (name); |
94af9270 | 10767 | |
98bfdba5 PA |
10768 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10769 | as children with DW_TAG_template_type_param or | |
10770 | DW_TAG_value_type_param. If the latter, add them to the name | |
10771 | here. If the name already has template parameters, then | |
10772 | skip this step; some versions of GCC emit both, and | |
10773 | it is more efficient to use the pre-computed name. | |
10774 | ||
10775 | Something to keep in mind about this process: it is very | |
10776 | unlikely, or in some cases downright impossible, to produce | |
10777 | something that will match the mangled name of a function. | |
10778 | If the definition of the function has the same debug info, | |
10779 | we should be able to match up with it anyway. But fallbacks | |
10780 | using the minimal symbol, for instance to find a method | |
10781 | implemented in a stripped copy of libstdc++, will not work. | |
10782 | If we do not have debug info for the definition, we will have to | |
10783 | match them up some other way. | |
10784 | ||
10785 | When we do name matching there is a related problem with function | |
10786 | templates; two instantiated function templates are allowed to | |
10787 | differ only by their return types, which we do not add here. */ | |
10788 | ||
10789 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10790 | { | |
10791 | struct attribute *attr; | |
10792 | struct die_info *child; | |
10793 | int first = 1; | |
10794 | ||
10795 | die->building_fullname = 1; | |
10796 | ||
10797 | for (child = die->child; child != NULL; child = child->sibling) | |
10798 | { | |
10799 | struct type *type; | |
12df843f | 10800 | LONGEST value; |
d521ce57 | 10801 | const gdb_byte *bytes; |
98bfdba5 PA |
10802 | struct dwarf2_locexpr_baton *baton; |
10803 | struct value *v; | |
10804 | ||
10805 | if (child->tag != DW_TAG_template_type_param | |
10806 | && child->tag != DW_TAG_template_value_param) | |
10807 | continue; | |
10808 | ||
10809 | if (first) | |
10810 | { | |
d7e74731 | 10811 | buf.puts ("<"); |
98bfdba5 PA |
10812 | first = 0; |
10813 | } | |
10814 | else | |
d7e74731 | 10815 | buf.puts (", "); |
98bfdba5 PA |
10816 | |
10817 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10818 | if (attr == NULL) | |
10819 | { | |
10820 | complaint (&symfile_complaints, | |
10821 | _("template parameter missing DW_AT_type")); | |
d7e74731 | 10822 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10823 | continue; |
10824 | } | |
10825 | type = die_type (child, cu); | |
10826 | ||
10827 | if (child->tag == DW_TAG_template_type_param) | |
10828 | { | |
d7e74731 | 10829 | c_print_type (type, "", &buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
10830 | continue; |
10831 | } | |
10832 | ||
10833 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10834 | if (attr == NULL) | |
10835 | { | |
10836 | complaint (&symfile_complaints, | |
3e43a32a MS |
10837 | _("template parameter missing " |
10838 | "DW_AT_const_value")); | |
d7e74731 | 10839 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10840 | continue; |
10841 | } | |
10842 | ||
10843 | dwarf2_const_value_attr (attr, type, name, | |
10844 | &cu->comp_unit_obstack, cu, | |
10845 | &value, &bytes, &baton); | |
10846 | ||
10847 | if (TYPE_NOSIGN (type)) | |
10848 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10849 | changed, this can use value_print instead. */ | |
d7e74731 | 10850 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10851 | else |
10852 | { | |
10853 | struct value_print_options opts; | |
10854 | ||
10855 | if (baton != NULL) | |
10856 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10857 | baton->data, | |
10858 | baton->size, | |
10859 | baton->per_cu); | |
10860 | else if (bytes != NULL) | |
10861 | { | |
10862 | v = allocate_value (type); | |
10863 | memcpy (value_contents_writeable (v), bytes, | |
10864 | TYPE_LENGTH (type)); | |
10865 | } | |
10866 | else | |
10867 | v = value_from_longest (type, value); | |
10868 | ||
3e43a32a MS |
10869 | /* Specify decimal so that we do not depend on |
10870 | the radix. */ | |
98bfdba5 PA |
10871 | get_formatted_print_options (&opts, 'd'); |
10872 | opts.raw = 1; | |
d7e74731 | 10873 | value_print (v, &buf, &opts); |
98bfdba5 | 10874 | release_value (v); |
98bfdba5 PA |
10875 | } |
10876 | } | |
10877 | ||
10878 | die->building_fullname = 0; | |
10879 | ||
10880 | if (!first) | |
10881 | { | |
10882 | /* Close the argument list, with a space if necessary | |
10883 | (nested templates). */ | |
d7e74731 PA |
10884 | if (!buf.empty () && buf.string ().back () == '>') |
10885 | buf.puts (" >"); | |
98bfdba5 | 10886 | else |
d7e74731 | 10887 | buf.puts (">"); |
98bfdba5 PA |
10888 | } |
10889 | } | |
10890 | ||
9c37b5ae | 10891 | /* For C++ methods, append formal parameter type |
94af9270 | 10892 | information, if PHYSNAME. */ |
6e70227d | 10893 | |
94af9270 | 10894 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10895 | && cu->language == language_cplus) |
94af9270 KS |
10896 | { |
10897 | struct type *type = read_type_die (die, cu); | |
10898 | ||
d7e74731 | 10899 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10900 | &type_print_raw_options); |
94af9270 | 10901 | |
9c37b5ae | 10902 | if (cu->language == language_cplus) |
94af9270 | 10903 | { |
60430eff DJ |
10904 | /* Assume that an artificial first parameter is |
10905 | "this", but do not crash if it is not. RealView | |
10906 | marks unnamed (and thus unused) parameters as | |
10907 | artificial; there is no way to differentiate | |
10908 | the two cases. */ | |
94af9270 KS |
10909 | if (TYPE_NFIELDS (type) > 0 |
10910 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10911 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10912 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10913 | 0)))) | |
d7e74731 | 10914 | buf.puts (" const"); |
94af9270 KS |
10915 | } |
10916 | } | |
10917 | ||
d7e74731 | 10918 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10919 | |
10920 | if (cu->language == language_cplus) | |
34a68019 | 10921 | canonical_name |
322a8516 | 10922 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
10923 | &objfile->per_bfd->storage_obstack); |
10924 | ||
10925 | /* If we only computed INTERMEDIATE_NAME, or if | |
10926 | INTERMEDIATE_NAME is already canonical, then we need to | |
10927 | copy it to the appropriate obstack. */ | |
322a8516 | 10928 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
10929 | name = ((const char *) |
10930 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
10931 | intermediate_name.c_str (), |
10932 | intermediate_name.length ())); | |
34a68019 TT |
10933 | else |
10934 | name = canonical_name; | |
94af9270 KS |
10935 | } |
10936 | } | |
10937 | ||
10938 | return name; | |
10939 | } | |
10940 | ||
0114d602 DJ |
10941 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10942 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10943 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10944 | not have a name. NAME may either be from a previous call to |
10945 | dwarf2_name or NULL. | |
10946 | ||
9c37b5ae | 10947 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10948 | |
10949 | static const char * | |
15d034d0 | 10950 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10951 | { |
94af9270 KS |
10952 | return dwarf2_compute_name (name, die, cu, 0); |
10953 | } | |
0114d602 | 10954 | |
94af9270 KS |
10955 | /* Construct a physname for the given DIE in CU. NAME may either be |
10956 | from a previous call to dwarf2_name or NULL. The result will be | |
10957 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10958 | name. | |
0114d602 | 10959 | |
9c37b5ae | 10960 | The output string will be canonicalized (if C++). */ |
0114d602 | 10961 | |
94af9270 | 10962 | static const char * |
15d034d0 | 10963 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10964 | { |
518817b3 | 10965 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 10966 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10967 | int need_copy = 1; |
10968 | ||
10969 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10970 | on its own. */ | |
10971 | if (!die_needs_namespace (die, cu)) | |
10972 | return dwarf2_compute_name (name, die, cu, 1); | |
10973 | ||
73b9be8b | 10974 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 10975 | |
e98c9e7c TT |
10976 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10977 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10978 | if (cu->language == language_rust && mangled != NULL | |
10979 | && strchr (mangled, '{') != NULL) | |
10980 | mangled = NULL; | |
10981 | ||
900e11f9 JK |
10982 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
10983 | has computed. */ | |
791afaa2 | 10984 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10985 | if (mangled != NULL) |
900e11f9 | 10986 | { |
900e11f9 | 10987 | |
59cc4834 JB |
10988 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10989 | { | |
10990 | /* Do nothing (do not demangle the symbol name). */ | |
10991 | } | |
10992 | else if (cu->language == language_go) | |
a766d390 | 10993 | { |
5e2db402 TT |
10994 | /* This is a lie, but we already lie to the caller new_symbol. |
10995 | new_symbol assumes we return the mangled name. | |
a766d390 | 10996 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10997 | } |
10998 | else | |
10999 | { | |
0eb876f5 JB |
11000 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
11001 | their return type. It is easier for GDB users to search | |
11002 | for such functions as `name(params)' than `long name(params)'. | |
11003 | In such case the minimal symbol names do not match the full | |
11004 | symbol names but for template functions there is never a need | |
11005 | to look up their definition from their declaration so | |
11006 | the only disadvantage remains the minimal symbol variant | |
11007 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
11008 | demangled.reset (gdb_demangle (mangled, |
11009 | (DMGL_PARAMS | DMGL_ANSI | |
11010 | | DMGL_RET_DROP))); | |
a766d390 | 11011 | } |
900e11f9 | 11012 | if (demangled) |
791afaa2 | 11013 | canon = demangled.get (); |
900e11f9 JK |
11014 | else |
11015 | { | |
11016 | canon = mangled; | |
11017 | need_copy = 0; | |
11018 | } | |
11019 | } | |
11020 | ||
11021 | if (canon == NULL || check_physname) | |
11022 | { | |
11023 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11024 | ||
11025 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11026 | { | |
11027 | /* It may not mean a bug in GDB. The compiler could also | |
11028 | compute DW_AT_linkage_name incorrectly. But in such case | |
11029 | GDB would need to be bug-to-bug compatible. */ | |
11030 | ||
11031 | complaint (&symfile_complaints, | |
11032 | _("Computed physname <%s> does not match demangled <%s> " | |
9d8780f0 SM |
11033 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
11034 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 11035 | objfile_name (objfile)); |
900e11f9 JK |
11036 | |
11037 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11038 | is available here - over computed PHYSNAME. It is safer | |
11039 | against both buggy GDB and buggy compilers. */ | |
11040 | ||
11041 | retval = canon; | |
11042 | } | |
11043 | else | |
11044 | { | |
11045 | retval = physname; | |
11046 | need_copy = 0; | |
11047 | } | |
11048 | } | |
11049 | else | |
11050 | retval = canon; | |
11051 | ||
11052 | if (need_copy) | |
224c3ddb SM |
11053 | retval = ((const char *) |
11054 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
11055 | retval, strlen (retval))); | |
900e11f9 | 11056 | |
900e11f9 | 11057 | return retval; |
0114d602 DJ |
11058 | } |
11059 | ||
74921315 KS |
11060 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11061 | a new symbol for it. | |
11062 | ||
11063 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11064 | ||
11065 | static int | |
11066 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11067 | { | |
11068 | struct attribute *attr; | |
11069 | ||
11070 | /* If the die does not have a name, this is not a namespace | |
11071 | alias. */ | |
11072 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11073 | if (attr != NULL) | |
11074 | { | |
11075 | int num; | |
11076 | struct die_info *d = die; | |
11077 | struct dwarf2_cu *imported_cu = cu; | |
11078 | ||
11079 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11080 | keep inspecting DIEs until we hit the underlying import. */ | |
11081 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11082 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11083 | { | |
11084 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11085 | if (attr == NULL) | |
11086 | break; | |
11087 | ||
11088 | d = follow_die_ref (d, attr, &imported_cu); | |
11089 | if (d->tag != DW_TAG_imported_declaration) | |
11090 | break; | |
11091 | } | |
11092 | ||
11093 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11094 | { | |
11095 | complaint (&symfile_complaints, | |
9d8780f0 SM |
11096 | _("DIE at %s has too many recursively imported " |
11097 | "declarations"), sect_offset_str (d->sect_off)); | |
74921315 KS |
11098 | return 0; |
11099 | } | |
11100 | ||
11101 | if (attr != NULL) | |
11102 | { | |
11103 | struct type *type; | |
9c541725 | 11104 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11105 | |
9c541725 | 11106 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11107 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11108 | { | |
11109 | /* This declaration is a global namespace alias. Add | |
11110 | a symbol for it whose type is the aliased namespace. */ | |
11111 | new_symbol (die, type, cu); | |
11112 | return 1; | |
11113 | } | |
11114 | } | |
11115 | } | |
11116 | ||
11117 | return 0; | |
11118 | } | |
11119 | ||
22cee43f PMR |
11120 | /* Return the using directives repository (global or local?) to use in the |
11121 | current context for LANGUAGE. | |
11122 | ||
11123 | For Ada, imported declarations can materialize renamings, which *may* be | |
11124 | global. However it is impossible (for now?) in DWARF to distinguish | |
11125 | "external" imported declarations and "static" ones. As all imported | |
11126 | declarations seem to be static in all other languages, make them all CU-wide | |
11127 | global only in Ada. */ | |
11128 | ||
11129 | static struct using_direct ** | |
11130 | using_directives (enum language language) | |
11131 | { | |
11132 | if (language == language_ada && context_stack_depth == 0) | |
11133 | return &global_using_directives; | |
11134 | else | |
11135 | return &local_using_directives; | |
11136 | } | |
11137 | ||
27aa8d6a SW |
11138 | /* Read the import statement specified by the given die and record it. */ |
11139 | ||
11140 | static void | |
11141 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11142 | { | |
518817b3 | 11143 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11144 | struct attribute *import_attr; |
32019081 | 11145 | struct die_info *imported_die, *child_die; |
de4affc9 | 11146 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11147 | const char *imported_name; |
794684b6 | 11148 | const char *imported_name_prefix; |
13387711 SW |
11149 | const char *canonical_name; |
11150 | const char *import_alias; | |
11151 | const char *imported_declaration = NULL; | |
794684b6 | 11152 | const char *import_prefix; |
eb1e02fd | 11153 | std::vector<const char *> excludes; |
13387711 | 11154 | |
27aa8d6a SW |
11155 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11156 | if (import_attr == NULL) | |
11157 | { | |
11158 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
11159 | dwarf_tag_name (die->tag)); | |
11160 | return; | |
11161 | } | |
11162 | ||
de4affc9 CC |
11163 | imported_cu = cu; |
11164 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11165 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11166 | if (imported_name == NULL) |
11167 | { | |
11168 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11169 | ||
11170 | The import in the following code: | |
11171 | namespace A | |
11172 | { | |
11173 | typedef int B; | |
11174 | } | |
11175 | ||
11176 | int main () | |
11177 | { | |
11178 | using A::B; | |
11179 | B b; | |
11180 | return b; | |
11181 | } | |
11182 | ||
11183 | ... | |
11184 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11185 | <52> DW_AT_decl_file : 1 | |
11186 | <53> DW_AT_decl_line : 6 | |
11187 | <54> DW_AT_import : <0x75> | |
11188 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11189 | <59> DW_AT_name : B | |
11190 | <5b> DW_AT_decl_file : 1 | |
11191 | <5c> DW_AT_decl_line : 2 | |
11192 | <5d> DW_AT_type : <0x6e> | |
11193 | ... | |
11194 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11195 | <76> DW_AT_byte_size : 4 | |
11196 | <77> DW_AT_encoding : 5 (signed) | |
11197 | ||
11198 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11199 | This case will be ignored until the gcc bug is fixed. */ | |
11200 | return; | |
11201 | } | |
11202 | ||
82856980 SW |
11203 | /* Figure out the local name after import. */ |
11204 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11205 | |
794684b6 SW |
11206 | /* Figure out where the statement is being imported to. */ |
11207 | import_prefix = determine_prefix (die, cu); | |
11208 | ||
11209 | /* Figure out what the scope of the imported die is and prepend it | |
11210 | to the name of the imported die. */ | |
de4affc9 | 11211 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11212 | |
f55ee35c JK |
11213 | if (imported_die->tag != DW_TAG_namespace |
11214 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11215 | { |
13387711 SW |
11216 | imported_declaration = imported_name; |
11217 | canonical_name = imported_name_prefix; | |
794684b6 | 11218 | } |
13387711 | 11219 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11220 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11221 | imported_name_prefix, |
11222 | (cu->language == language_d ? "." : "::"), | |
11223 | imported_name, (char *) NULL); | |
13387711 SW |
11224 | else |
11225 | canonical_name = imported_name; | |
794684b6 | 11226 | |
32019081 JK |
11227 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11228 | for (child_die = die->child; child_die && child_die->tag; | |
11229 | child_die = sibling_die (child_die)) | |
11230 | { | |
11231 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11232 | represented by an imported module entry with an import attribute | |
11233 | referring to the module and owned entries corresponding to those | |
11234 | entities that are renamed as part of being imported. */ | |
11235 | ||
11236 | if (child_die->tag != DW_TAG_imported_declaration) | |
11237 | { | |
11238 | complaint (&symfile_complaints, | |
11239 | _("child DW_TAG_imported_declaration expected " | |
9d8780f0 SM |
11240 | "- DIE at %s [in module %s]"), |
11241 | sect_offset_str (child_die->sect_off), | |
11242 | objfile_name (objfile)); | |
32019081 JK |
11243 | continue; |
11244 | } | |
11245 | ||
11246 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11247 | if (import_attr == NULL) | |
11248 | { | |
11249 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
11250 | dwarf_tag_name (child_die->tag)); | |
11251 | continue; | |
11252 | } | |
11253 | ||
11254 | imported_cu = cu; | |
11255 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11256 | &imported_cu); | |
11257 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11258 | if (imported_name == NULL) | |
11259 | { | |
11260 | complaint (&symfile_complaints, | |
11261 | _("child DW_TAG_imported_declaration has unknown " | |
9d8780f0 SM |
11262 | "imported name - DIE at %s [in module %s]"), |
11263 | sect_offset_str (child_die->sect_off), | |
11264 | objfile_name (objfile)); | |
32019081 JK |
11265 | continue; |
11266 | } | |
11267 | ||
eb1e02fd | 11268 | excludes.push_back (imported_name); |
32019081 JK |
11269 | |
11270 | process_die (child_die, cu); | |
11271 | } | |
11272 | ||
22cee43f PMR |
11273 | add_using_directive (using_directives (cu->language), |
11274 | import_prefix, | |
11275 | canonical_name, | |
11276 | import_alias, | |
11277 | imported_declaration, | |
11278 | excludes, | |
11279 | 0, | |
11280 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11281 | } |
11282 | ||
5230b05a WT |
11283 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11284 | types, but gives them a size of zero. Starting with version 14, | |
11285 | ICC is compatible with GCC. */ | |
11286 | ||
11287 | static int | |
11288 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) | |
11289 | { | |
11290 | if (!cu->checked_producer) | |
11291 | check_producer (cu); | |
11292 | ||
11293 | return cu->producer_is_icc_lt_14; | |
11294 | } | |
11295 | ||
1b80a9fa JK |
11296 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11297 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11298 | this, it was first present in GCC release 4.3.0. */ | |
11299 | ||
11300 | static int | |
11301 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
11302 | { | |
11303 | if (!cu->checked_producer) | |
11304 | check_producer (cu); | |
11305 | ||
11306 | return cu->producer_is_gcc_lt_4_3; | |
11307 | } | |
11308 | ||
d721ba37 PA |
11309 | static file_and_directory |
11310 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11311 | { |
d721ba37 PA |
11312 | file_and_directory res; |
11313 | ||
9291a0cd TT |
11314 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11315 | is not a source language identifier. */ | |
d721ba37 PA |
11316 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11317 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11318 | |
d721ba37 PA |
11319 | if (res.comp_dir == NULL |
11320 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11321 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11322 | { |
d721ba37 PA |
11323 | res.comp_dir_storage = ldirname (res.name); |
11324 | if (!res.comp_dir_storage.empty ()) | |
11325 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11326 | } |
d721ba37 | 11327 | if (res.comp_dir != NULL) |
9291a0cd TT |
11328 | { |
11329 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11330 | directory, get rid of it. */ | |
d721ba37 | 11331 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11332 | |
d721ba37 PA |
11333 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11334 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11335 | } |
11336 | ||
d721ba37 PA |
11337 | if (res.name == NULL) |
11338 | res.name = "<unknown>"; | |
11339 | ||
11340 | return res; | |
9291a0cd TT |
11341 | } |
11342 | ||
f4dc4d17 DE |
11343 | /* Handle DW_AT_stmt_list for a compilation unit. |
11344 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11345 | COMP_DIR is the compilation directory. LOWPC is passed to |
11346 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11347 | |
11348 | static void | |
11349 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11350 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11351 | { |
518817b3 SM |
11352 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11353 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11354 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11355 | struct attribute *attr; |
527f3840 JK |
11356 | struct line_header line_header_local; |
11357 | hashval_t line_header_local_hash; | |
527f3840 JK |
11358 | void **slot; |
11359 | int decode_mapping; | |
2ab95328 | 11360 | |
f4dc4d17 DE |
11361 | gdb_assert (! cu->per_cu->is_debug_types); |
11362 | ||
2ab95328 | 11363 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11364 | if (attr == NULL) |
11365 | return; | |
11366 | ||
9c541725 | 11367 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11368 | |
11369 | /* The line header hash table is only created if needed (it exists to | |
11370 | prevent redundant reading of the line table for partial_units). | |
11371 | If we're given a partial_unit, we'll need it. If we're given a | |
11372 | compile_unit, then use the line header hash table if it's already | |
11373 | created, but don't create one just yet. */ | |
11374 | ||
11375 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11376 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11377 | { |
527f3840 JK |
11378 | dwarf2_per_objfile->line_header_hash |
11379 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11380 | line_header_eq_voidp, | |
11381 | free_line_header_voidp, | |
11382 | &objfile->objfile_obstack, | |
11383 | hashtab_obstack_allocate, | |
11384 | dummy_obstack_deallocate); | |
11385 | } | |
2ab95328 | 11386 | |
9c541725 | 11387 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11388 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11389 | line_header_local_hash = line_header_hash (&line_header_local); | |
11390 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11391 | { | |
11392 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11393 | &line_header_local, | |
11394 | line_header_local_hash, NO_INSERT); | |
11395 | ||
11396 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11397 | is not present in *SLOT (since if there is something in *SLOT then | |
11398 | it will be for a partial_unit). */ | |
11399 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11400 | { |
527f3840 | 11401 | gdb_assert (*slot != NULL); |
9a3c8263 | 11402 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11403 | return; |
dee91e82 | 11404 | } |
2ab95328 | 11405 | } |
527f3840 JK |
11406 | |
11407 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11408 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11409 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11410 | if (lh == NULL) | |
527f3840 | 11411 | return; |
4c8aa72d PA |
11412 | |
11413 | cu->line_header = lh.release (); | |
11414 | cu->line_header_die_owner = die; | |
527f3840 JK |
11415 | |
11416 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11417 | slot = NULL; | |
11418 | else | |
11419 | { | |
11420 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11421 | &line_header_local, | |
11422 | line_header_local_hash, INSERT); | |
11423 | gdb_assert (slot != NULL); | |
11424 | } | |
11425 | if (slot != NULL && *slot == NULL) | |
11426 | { | |
11427 | /* This newly decoded line number information unit will be owned | |
11428 | by line_header_hash hash table. */ | |
11429 | *slot = cu->line_header; | |
4c8aa72d | 11430 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11431 | } |
11432 | else | |
11433 | { | |
11434 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11435 | may be already used by multiple CUs. Create only temporary decoded | |
11436 | line_header for this CU - it may happen at most once for each line | |
11437 | number information unit. And if we're not using line_header_hash | |
11438 | then this is what we want as well. */ | |
11439 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11440 | } |
11441 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11442 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11443 | decode_mapping); | |
fff8551c | 11444 | |
2ab95328 TT |
11445 | } |
11446 | ||
95554aad | 11447 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11448 | |
c906108c | 11449 | static void |
e7c27a73 | 11450 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11451 | { |
518817b3 SM |
11452 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11453 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11454 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11455 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11456 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11457 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11458 | struct attribute *attr; | |
c906108c | 11459 | struct die_info *child_die; |
e142c38c | 11460 | CORE_ADDR baseaddr; |
6e70227d | 11461 | |
e142c38c | 11462 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 11463 | |
fae299cd | 11464 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11465 | |
11466 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11467 | from finish_block. */ | |
2acceee2 | 11468 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11469 | lowpc = highpc; |
3e29f34a | 11470 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11471 | |
d721ba37 | 11472 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11473 | |
95554aad | 11474 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 11475 | |
f4b8a18d KW |
11476 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11477 | standardised yet. As a workaround for the language detection we fall | |
11478 | back to the DW_AT_producer string. */ | |
11479 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11480 | cu->language = language_opencl; | |
11481 | ||
3019eac3 DE |
11482 | /* Similar hack for Go. */ |
11483 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11484 | set_cu_language (DW_LANG_Go, cu); | |
11485 | ||
d721ba37 | 11486 | dwarf2_start_symtab (cu, fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11487 | |
11488 | /* Decode line number information if present. We do this before | |
11489 | processing child DIEs, so that the line header table is available | |
11490 | for DW_AT_decl_file. */ | |
d721ba37 | 11491 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11492 | |
11493 | /* Process all dies in compilation unit. */ | |
11494 | if (die->child != NULL) | |
11495 | { | |
11496 | child_die = die->child; | |
11497 | while (child_die && child_die->tag) | |
11498 | { | |
11499 | process_die (child_die, cu); | |
11500 | child_die = sibling_die (child_die); | |
11501 | } | |
11502 | } | |
11503 | ||
11504 | /* Decode macro information, if present. Dwarf 2 macro information | |
11505 | refers to information in the line number info statement program | |
11506 | header, so we can only read it if we've read the header | |
11507 | successfully. */ | |
0af92d60 JK |
11508 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11509 | if (attr == NULL) | |
11510 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11511 | if (attr && cu->line_header) |
11512 | { | |
11513 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
11514 | complaint (&symfile_complaints, | |
0af92d60 | 11515 | _("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11516 | |
43f3e411 | 11517 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11518 | } |
11519 | else | |
11520 | { | |
11521 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11522 | if (attr && cu->line_header) | |
11523 | { | |
11524 | unsigned int macro_offset = DW_UNSND (attr); | |
11525 | ||
43f3e411 | 11526 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11527 | } |
11528 | } | |
3019eac3 DE |
11529 | } |
11530 | ||
f4dc4d17 DE |
11531 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
11532 | Create the set of symtabs used by this TU, or if this TU is sharing | |
11533 | symtabs with another TU and the symtabs have already been created | |
11534 | then restore those symtabs in the line header. | |
11535 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
11536 | |
11537 | static void | |
f4dc4d17 | 11538 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 11539 | { |
f4dc4d17 DE |
11540 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
11541 | struct type_unit_group *tu_group; | |
11542 | int first_time; | |
3019eac3 | 11543 | struct attribute *attr; |
9c541725 | 11544 | unsigned int i; |
0186c6a7 | 11545 | struct signatured_type *sig_type; |
3019eac3 | 11546 | |
f4dc4d17 | 11547 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11548 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11549 | |
f4dc4d17 | 11550 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 11551 | |
f4dc4d17 | 11552 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11553 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
11554 | if (sig_type->type_unit_group == NULL) |
11555 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
11556 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
11557 | |
11558 | /* If we've already processed this stmt_list there's no real need to | |
11559 | do it again, we could fake it and just recreate the part we need | |
11560 | (file name,index -> symtab mapping). If data shows this optimization | |
11561 | is useful we can do it then. */ | |
43f3e411 | 11562 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11563 | |
11564 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11565 | debug info. */ | |
fff8551c | 11566 | line_header_up lh; |
f4dc4d17 | 11567 | if (attr != NULL) |
3019eac3 | 11568 | { |
9c541725 | 11569 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
f4dc4d17 DE |
11570 | lh = dwarf_decode_line_header (line_offset, cu); |
11571 | } | |
11572 | if (lh == NULL) | |
11573 | { | |
11574 | if (first_time) | |
11575 | dwarf2_start_symtab (cu, "", NULL, 0); | |
11576 | else | |
11577 | { | |
11578 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 11579 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 11580 | } |
f4dc4d17 | 11581 | return; |
3019eac3 DE |
11582 | } |
11583 | ||
4c8aa72d PA |
11584 | cu->line_header = lh.release (); |
11585 | cu->line_header_die_owner = die; | |
3019eac3 | 11586 | |
f4dc4d17 DE |
11587 | if (first_time) |
11588 | { | |
43f3e411 | 11589 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 11590 | |
1fd60fc0 DE |
11591 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11592 | still initializing it, and our caller (a few levels up) | |
11593 | process_full_type_unit still needs to know if this is the first | |
11594 | time. */ | |
11595 | ||
4c8aa72d PA |
11596 | tu_group->num_symtabs = cu->line_header->file_names.size (); |
11597 | tu_group->symtabs = XNEWVEC (struct symtab *, | |
11598 | cu->line_header->file_names.size ()); | |
3019eac3 | 11599 | |
4c8aa72d | 11600 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11601 | { |
4c8aa72d | 11602 | file_entry &fe = cu->line_header->file_names[i]; |
3019eac3 | 11603 | |
4c8aa72d | 11604 | dwarf2_start_subfile (fe.name, fe.include_dir (cu->line_header)); |
3019eac3 | 11605 | |
f4dc4d17 DE |
11606 | if (current_subfile->symtab == NULL) |
11607 | { | |
4c8aa72d PA |
11608 | /* NOTE: start_subfile will recognize when it's been |
11609 | passed a file it has already seen. So we can't | |
11610 | assume there's a simple mapping from | |
11611 | cu->line_header->file_names to subfiles, plus | |
11612 | cu->line_header->file_names may contain dups. */ | |
43f3e411 DE |
11613 | current_subfile->symtab |
11614 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
11615 | } |
11616 | ||
8c43009f PA |
11617 | fe.symtab = current_subfile->symtab; |
11618 | tu_group->symtabs[i] = fe.symtab; | |
f4dc4d17 DE |
11619 | } |
11620 | } | |
11621 | else | |
3019eac3 | 11622 | { |
0ab9ce85 | 11623 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 11624 | |
4c8aa72d | 11625 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11626 | { |
4c8aa72d | 11627 | file_entry &fe = cu->line_header->file_names[i]; |
f4dc4d17 | 11628 | |
4c8aa72d | 11629 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11630 | } |
3019eac3 DE |
11631 | } |
11632 | ||
f4dc4d17 DE |
11633 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11634 | so they don't have a "real" (so to speak) symtab anyway. | |
11635 | There is later code that will assign the main symtab to all symbols | |
11636 | that don't have one. We need to handle the case of a symbol with a | |
11637 | missing symtab (DW_AT_decl_file) anyway. */ | |
11638 | } | |
3019eac3 | 11639 | |
f4dc4d17 DE |
11640 | /* Process DW_TAG_type_unit. |
11641 | For TUs we want to skip the first top level sibling if it's not the | |
11642 | actual type being defined by this TU. In this case the first top | |
11643 | level sibling is there to provide context only. */ | |
3019eac3 | 11644 | |
f4dc4d17 DE |
11645 | static void |
11646 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11647 | { | |
11648 | struct die_info *child_die; | |
3019eac3 | 11649 | |
f4dc4d17 DE |
11650 | prepare_one_comp_unit (cu, die, language_minimal); |
11651 | ||
11652 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11653 | We do this before processing child DIEs, so that the line header table | |
11654 | is available for DW_AT_decl_file. */ | |
11655 | setup_type_unit_groups (die, cu); | |
11656 | ||
11657 | if (die->child != NULL) | |
11658 | { | |
11659 | child_die = die->child; | |
11660 | while (child_die && child_die->tag) | |
11661 | { | |
11662 | process_die (child_die, cu); | |
11663 | child_die = sibling_die (child_die); | |
11664 | } | |
11665 | } | |
3019eac3 DE |
11666 | } |
11667 | \f | |
80626a55 DE |
11668 | /* DWO/DWP files. |
11669 | ||
11670 | http://gcc.gnu.org/wiki/DebugFission | |
11671 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11672 | ||
11673 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11674 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11675 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11676 | |
11677 | static hashval_t | |
11678 | hash_dwo_file (const void *item) | |
11679 | { | |
9a3c8263 | 11680 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11681 | hashval_t hash; |
3019eac3 | 11682 | |
a2ce51a0 DE |
11683 | hash = htab_hash_string (dwo_file->dwo_name); |
11684 | if (dwo_file->comp_dir != NULL) | |
11685 | hash += htab_hash_string (dwo_file->comp_dir); | |
11686 | return hash; | |
3019eac3 DE |
11687 | } |
11688 | ||
11689 | static int | |
11690 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11691 | { | |
9a3c8263 SM |
11692 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11693 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11694 | |
a2ce51a0 DE |
11695 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11696 | return 0; | |
11697 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11698 | return lhs->comp_dir == rhs->comp_dir; | |
11699 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11700 | } |
11701 | ||
11702 | /* Allocate a hash table for DWO files. */ | |
11703 | ||
11704 | static htab_t | |
ed2dc618 | 11705 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11706 | { |
3019eac3 DE |
11707 | return htab_create_alloc_ex (41, |
11708 | hash_dwo_file, | |
11709 | eq_dwo_file, | |
11710 | NULL, | |
11711 | &objfile->objfile_obstack, | |
11712 | hashtab_obstack_allocate, | |
11713 | dummy_obstack_deallocate); | |
11714 | } | |
11715 | ||
80626a55 DE |
11716 | /* Lookup DWO file DWO_NAME. */ |
11717 | ||
11718 | static void ** | |
ed2dc618 SM |
11719 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11720 | const char *dwo_name, | |
11721 | const char *comp_dir) | |
80626a55 DE |
11722 | { |
11723 | struct dwo_file find_entry; | |
11724 | void **slot; | |
11725 | ||
11726 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11727 | dwarf2_per_objfile->dwo_files |
11728 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 DE |
11729 | |
11730 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
11731 | find_entry.dwo_name = dwo_name; |
11732 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
11733 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
11734 | ||
11735 | return slot; | |
11736 | } | |
11737 | ||
3019eac3 DE |
11738 | static hashval_t |
11739 | hash_dwo_unit (const void *item) | |
11740 | { | |
9a3c8263 | 11741 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11742 | |
11743 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11744 | return dwo_unit->signature; | |
11745 | } | |
11746 | ||
11747 | static int | |
11748 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11749 | { | |
9a3c8263 SM |
11750 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11751 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11752 | |
11753 | /* The signature is assumed to be unique within the DWO file. | |
11754 | So while object file CU dwo_id's always have the value zero, | |
11755 | that's OK, assuming each object file DWO file has only one CU, | |
11756 | and that's the rule for now. */ | |
11757 | return lhs->signature == rhs->signature; | |
11758 | } | |
11759 | ||
11760 | /* Allocate a hash table for DWO CUs,TUs. | |
11761 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11762 | ||
11763 | static htab_t | |
11764 | allocate_dwo_unit_table (struct objfile *objfile) | |
11765 | { | |
11766 | /* Start out with a pretty small number. | |
11767 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11768 | return htab_create_alloc_ex (3, | |
11769 | hash_dwo_unit, | |
11770 | eq_dwo_unit, | |
11771 | NULL, | |
11772 | &objfile->objfile_obstack, | |
11773 | hashtab_obstack_allocate, | |
11774 | dummy_obstack_deallocate); | |
11775 | } | |
11776 | ||
80626a55 | 11777 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 11778 | |
19c3d4c9 | 11779 | struct create_dwo_cu_data |
3019eac3 DE |
11780 | { |
11781 | struct dwo_file *dwo_file; | |
19c3d4c9 | 11782 | struct dwo_unit dwo_unit; |
3019eac3 DE |
11783 | }; |
11784 | ||
19c3d4c9 | 11785 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11786 | |
11787 | static void | |
19c3d4c9 DE |
11788 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11789 | const gdb_byte *info_ptr, | |
11790 | struct die_info *comp_unit_die, | |
11791 | int has_children, | |
11792 | void *datap) | |
3019eac3 DE |
11793 | { |
11794 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11795 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11796 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 11797 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 11798 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 11799 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 11800 | struct attribute *attr; |
3019eac3 DE |
11801 | |
11802 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
11803 | if (attr == NULL) | |
11804 | { | |
19c3d4c9 | 11805 | complaint (&symfile_complaints, |
9d8780f0 | 11806 | _("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11807 | " its dwo_id [in module %s]"), |
9d8780f0 | 11808 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11809 | return; |
11810 | } | |
11811 | ||
3019eac3 DE |
11812 | dwo_unit->dwo_file = dwo_file; |
11813 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 11814 | dwo_unit->section = section; |
9c541725 | 11815 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11816 | dwo_unit->length = cu->per_cu->length; |
11817 | ||
b4f54984 | 11818 | if (dwarf_read_debug) |
9d8780f0 SM |
11819 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11820 | sect_offset_str (sect_off), | |
9c541725 | 11821 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11822 | } |
11823 | ||
33c5cd75 | 11824 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11825 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11826 | |
33c5cd75 | 11827 | static void |
ed2dc618 SM |
11828 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11829 | struct dwo_file &dwo_file, dwarf2_section_info §ion, | |
33c5cd75 | 11830 | htab_t &cus_htab) |
3019eac3 DE |
11831 | { |
11832 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11833 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11834 | |
33c5cd75 DB |
11835 | dwarf2_read_section (objfile, §ion); |
11836 | info_ptr = section.buffer; | |
3019eac3 DE |
11837 | |
11838 | if (info_ptr == NULL) | |
33c5cd75 | 11839 | return; |
3019eac3 | 11840 | |
b4f54984 | 11841 | if (dwarf_read_debug) |
19c3d4c9 DE |
11842 | { |
11843 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
11844 | get_section_name (§ion), |
11845 | get_section_file_name (§ion)); | |
19c3d4c9 | 11846 | } |
3019eac3 | 11847 | |
33c5cd75 | 11848 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11849 | while (info_ptr < end_ptr) |
11850 | { | |
11851 | struct dwarf2_per_cu_data per_cu; | |
33c5cd75 DB |
11852 | struct create_dwo_cu_data create_dwo_cu_data; |
11853 | struct dwo_unit *dwo_unit; | |
11854 | void **slot; | |
11855 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 11856 | |
19c3d4c9 DE |
11857 | memset (&create_dwo_cu_data.dwo_unit, 0, |
11858 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 | 11859 | memset (&per_cu, 0, sizeof (per_cu)); |
e3b94546 | 11860 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11861 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11862 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11863 | per_cu.section = §ion; | |
c5ed0576 | 11864 | create_dwo_cu_data.dwo_file = &dwo_file; |
33c5cd75 DB |
11865 | |
11866 | init_cutu_and_read_dies_no_follow ( | |
11867 | &per_cu, &dwo_file, create_dwo_cu_reader, &create_dwo_cu_data); | |
11868 | info_ptr += per_cu.length; | |
11869 | ||
11870 | // If the unit could not be parsed, skip it. | |
11871 | if (create_dwo_cu_data.dwo_unit.dwo_file == NULL) | |
11872 | continue; | |
3019eac3 | 11873 | |
33c5cd75 DB |
11874 | if (cus_htab == NULL) |
11875 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11876 | |
33c5cd75 DB |
11877 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
11878 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
11879 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); | |
11880 | gdb_assert (slot != NULL); | |
11881 | if (*slot != NULL) | |
19c3d4c9 | 11882 | { |
33c5cd75 DB |
11883 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11884 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11885 | |
33c5cd75 | 11886 | complaint (&symfile_complaints, |
9d8780f0 SM |
11887 | _("debug cu entry at offset %s is duplicate to" |
11888 | " the entry at offset %s, signature %s"), | |
11889 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11890 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11891 | } |
33c5cd75 | 11892 | *slot = (void *)dwo_unit; |
3019eac3 | 11893 | } |
3019eac3 DE |
11894 | } |
11895 | ||
80626a55 DE |
11896 | /* DWP file .debug_{cu,tu}_index section format: |
11897 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11898 | ||
d2415c6c DE |
11899 | DWP Version 1: |
11900 | ||
80626a55 DE |
11901 | Both index sections have the same format, and serve to map a 64-bit |
11902 | signature to a set of section numbers. Each section begins with a header, | |
11903 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11904 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11905 | aligned at 8-byte boundaries in the file. | |
11906 | ||
d2415c6c DE |
11907 | The index section header consists of: |
11908 | ||
11909 | V, 32 bit version number | |
11910 | -, 32 bits unused | |
11911 | N, 32 bit number of compilation units or type units in the index | |
11912 | M, 32 bit number of slots in the hash table | |
80626a55 | 11913 | |
d2415c6c | 11914 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11915 | |
d2415c6c DE |
11916 | The hash table begins at offset 16 in the section, and consists of an array |
11917 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11918 | order of the application binary). Unused slots in the hash table are 0. | |
11919 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11920 | |
d2415c6c DE |
11921 | The parallel table begins immediately after the hash table |
11922 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11923 | array of 32-bit indexes (using the byte order of the application binary), | |
11924 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11925 | table contains a 32-bit index into the pool of section numbers. For unused | |
11926 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11927 | |
73869dc2 DE |
11928 | The pool of section numbers begins immediately following the hash table |
11929 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11930 | section numbers consists of an array of 32-bit words (using the byte order | |
11931 | of the application binary). Each item in the array is indexed starting | |
11932 | from 0. The hash table entry provides the index of the first section | |
11933 | number in the set. Additional section numbers in the set follow, and the | |
11934 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11935 | ||
11936 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11937 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11938 | be the second entry. Other members of the set may follow in any order. | |
11939 | ||
11940 | --- | |
11941 | ||
11942 | DWP Version 2: | |
11943 | ||
11944 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11945 | and the entries in the index tables are now offsets into these sections. | |
11946 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11947 | section. | |
11948 | ||
11949 | Index Section Contents: | |
11950 | Header | |
11951 | Hash Table of Signatures dwp_hash_table.hash_table | |
11952 | Parallel Table of Indices dwp_hash_table.unit_table | |
11953 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11954 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11955 | ||
11956 | The index section header consists of: | |
11957 | ||
11958 | V, 32 bit version number | |
11959 | L, 32 bit number of columns in the table of section offsets | |
11960 | N, 32 bit number of compilation units or type units in the index | |
11961 | M, 32 bit number of slots in the hash table | |
11962 | ||
11963 | Numbers are recorded using the byte order of the application binary. | |
11964 | ||
11965 | The hash table has the same format as version 1. | |
11966 | The parallel table of indices has the same format as version 1, | |
11967 | except that the entries are origin-1 indices into the table of sections | |
11968 | offsets and the table of section sizes. | |
11969 | ||
11970 | The table of offsets begins immediately following the parallel table | |
11971 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11972 | a two-dimensional array of 32-bit words (using the byte order of the | |
11973 | application binary), with L columns and N+1 rows, in row-major order. | |
11974 | Each row in the array is indexed starting from 0. The first row provides | |
11975 | a key to the remaining rows: each column in this row provides an identifier | |
11976 | for a debug section, and the offsets in the same column of subsequent rows | |
11977 | refer to that section. The section identifiers are: | |
11978 | ||
11979 | DW_SECT_INFO 1 .debug_info.dwo | |
11980 | DW_SECT_TYPES 2 .debug_types.dwo | |
11981 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11982 | DW_SECT_LINE 4 .debug_line.dwo | |
11983 | DW_SECT_LOC 5 .debug_loc.dwo | |
11984 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11985 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11986 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11987 | ||
11988 | The offsets provided by the CU and TU index sections are the base offsets | |
11989 | for the contributions made by each CU or TU to the corresponding section | |
11990 | in the package file. Each CU and TU header contains an abbrev_offset | |
11991 | field, used to find the abbreviations table for that CU or TU within the | |
11992 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11993 | be interpreted as relative to the base offset given in the index section. | |
11994 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11995 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11996 | and offsets into other debug sections obtained from DWARF attributes should | |
11997 | also be interpreted as relative to the corresponding base offset. | |
11998 | ||
11999 | The table of sizes begins immediately following the table of offsets. | |
12000 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12001 | with L columns and N rows, in row-major order. Each row in the array is | |
12002 | indexed starting from 1 (row 0 is shared by the two tables). | |
12003 | ||
12004 | --- | |
12005 | ||
12006 | Hash table lookup is handled the same in version 1 and 2: | |
12007 | ||
12008 | We assume that N and M will not exceed 2^32 - 1. | |
12009 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12010 | ||
d2415c6c DE |
12011 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12012 | in the hash table is located as follows: | |
80626a55 | 12013 | |
d2415c6c DE |
12014 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12015 | the low-order k bits all set to 1. | |
80626a55 | 12016 | |
d2415c6c | 12017 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12018 | |
d2415c6c DE |
12019 | 3) If the hash table entry at index H matches the signature, use that |
12020 | entry. If the hash table entry at index H is unused (all zeroes), | |
12021 | terminate the search: the signature is not present in the table. | |
80626a55 | 12022 | |
d2415c6c | 12023 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12024 | |
d2415c6c | 12025 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12026 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12027 | |
12028 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12029 | .debug_{info,types}.dwo in DWP_FILE. | |
12030 | Returns NULL if there isn't one. | |
12031 | Note: This function processes DWP files only, not DWO files. */ | |
12032 | ||
12033 | static struct dwp_hash_table * | |
ed2dc618 SM |
12034 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12035 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12036 | { |
12037 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12038 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 12039 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12040 | struct dwarf2_section_info *index; |
73869dc2 | 12041 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12042 | struct dwp_hash_table *htab; |
12043 | ||
12044 | if (is_debug_types) | |
12045 | index = &dwp_file->sections.tu_index; | |
12046 | else | |
12047 | index = &dwp_file->sections.cu_index; | |
12048 | ||
12049 | if (dwarf2_section_empty_p (index)) | |
12050 | return NULL; | |
12051 | dwarf2_read_section (objfile, index); | |
12052 | ||
12053 | index_ptr = index->buffer; | |
12054 | index_end = index_ptr + index->size; | |
12055 | ||
12056 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12057 | index_ptr += 4; |
12058 | if (version == 2) | |
12059 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12060 | else | |
12061 | nr_columns = 0; | |
12062 | index_ptr += 4; | |
80626a55 DE |
12063 | nr_units = read_4_bytes (dbfd, index_ptr); |
12064 | index_ptr += 4; | |
12065 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12066 | index_ptr += 4; | |
12067 | ||
73869dc2 | 12068 | if (version != 1 && version != 2) |
80626a55 | 12069 | { |
21aa081e | 12070 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12071 | " [in module %s]"), |
21aa081e | 12072 | pulongest (version), dwp_file->name); |
80626a55 DE |
12073 | } |
12074 | if (nr_slots != (nr_slots & -nr_slots)) | |
12075 | { | |
21aa081e | 12076 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12077 | " is not power of 2 [in module %s]"), |
21aa081e | 12078 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12079 | } |
12080 | ||
12081 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12082 | htab->version = version; |
12083 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12084 | htab->nr_units = nr_units; |
12085 | htab->nr_slots = nr_slots; | |
12086 | htab->hash_table = index_ptr; | |
12087 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12088 | |
12089 | /* Exit early if the table is empty. */ | |
12090 | if (nr_slots == 0 || nr_units == 0 | |
12091 | || (version == 2 && nr_columns == 0)) | |
12092 | { | |
12093 | /* All must be zero. */ | |
12094 | if (nr_slots != 0 || nr_units != 0 | |
12095 | || (version == 2 && nr_columns != 0)) | |
12096 | { | |
12097 | complaint (&symfile_complaints, | |
12098 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
12099 | " all zero [in modules %s]"), | |
12100 | dwp_file->name); | |
12101 | } | |
12102 | return htab; | |
12103 | } | |
12104 | ||
12105 | if (version == 1) | |
12106 | { | |
12107 | htab->section_pool.v1.indices = | |
12108 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12109 | /* It's harder to decide whether the section is too small in v1. | |
12110 | V1 is deprecated anyway so we punt. */ | |
12111 | } | |
12112 | else | |
12113 | { | |
12114 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12115 | int *ids = htab->section_pool.v2.section_ids; | |
12116 | /* Reverse map for error checking. */ | |
12117 | int ids_seen[DW_SECT_MAX + 1]; | |
12118 | int i; | |
12119 | ||
12120 | if (nr_columns < 2) | |
12121 | { | |
12122 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12123 | " in section table [in module %s]"), | |
12124 | dwp_file->name); | |
12125 | } | |
12126 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12127 | { | |
12128 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12129 | " in section table [in module %s]"), | |
12130 | dwp_file->name); | |
12131 | } | |
12132 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12133 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12134 | for (i = 0; i < nr_columns; ++i) | |
12135 | { | |
12136 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12137 | ||
12138 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12139 | { | |
12140 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12141 | " in section table [in module %s]"), | |
12142 | id, dwp_file->name); | |
12143 | } | |
12144 | if (ids_seen[id] != -1) | |
12145 | { | |
12146 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12147 | " id %d in section table [in module %s]"), | |
12148 | id, dwp_file->name); | |
12149 | } | |
12150 | ids_seen[id] = i; | |
12151 | ids[i] = id; | |
12152 | } | |
12153 | /* Must have exactly one info or types section. */ | |
12154 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12155 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12156 | != 1) | |
12157 | { | |
12158 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12159 | " DWO info/types section [in module %s]"), | |
12160 | dwp_file->name); | |
12161 | } | |
12162 | /* Must have an abbrev section. */ | |
12163 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12164 | { | |
12165 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12166 | " section [in module %s]"), | |
12167 | dwp_file->name); | |
12168 | } | |
12169 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12170 | htab->section_pool.v2.sizes = | |
12171 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12172 | * nr_units * nr_columns); | |
12173 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12174 | * nr_units * nr_columns)) | |
12175 | > index_end) | |
12176 | { | |
12177 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12178 | " [in module %s]"), | |
12179 | dwp_file->name); | |
12180 | } | |
12181 | } | |
80626a55 DE |
12182 | |
12183 | return htab; | |
12184 | } | |
12185 | ||
12186 | /* Update SECTIONS with the data from SECTP. | |
12187 | ||
12188 | This function is like the other "locate" section routines that are | |
12189 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12190 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12191 | |
12192 | The result is non-zero for success, or zero if an error was found. */ | |
12193 | ||
12194 | static int | |
73869dc2 DE |
12195 | locate_v1_virtual_dwo_sections (asection *sectp, |
12196 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12197 | { |
12198 | const struct dwop_section_names *names = &dwop_section_names; | |
12199 | ||
12200 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12201 | { | |
12202 | /* There can be only one. */ | |
049412e3 | 12203 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12204 | return 0; |
049412e3 | 12205 | sections->abbrev.s.section = sectp; |
80626a55 DE |
12206 | sections->abbrev.size = bfd_get_section_size (sectp); |
12207 | } | |
12208 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12209 | || section_is_p (sectp->name, &names->types_dwo)) | |
12210 | { | |
12211 | /* There can be only one. */ | |
049412e3 | 12212 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12213 | return 0; |
049412e3 | 12214 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
12215 | sections->info_or_types.size = bfd_get_section_size (sectp); |
12216 | } | |
12217 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12218 | { | |
12219 | /* There can be only one. */ | |
049412e3 | 12220 | if (sections->line.s.section != NULL) |
80626a55 | 12221 | return 0; |
049412e3 | 12222 | sections->line.s.section = sectp; |
80626a55 DE |
12223 | sections->line.size = bfd_get_section_size (sectp); |
12224 | } | |
12225 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12226 | { | |
12227 | /* There can be only one. */ | |
049412e3 | 12228 | if (sections->loc.s.section != NULL) |
80626a55 | 12229 | return 0; |
049412e3 | 12230 | sections->loc.s.section = sectp; |
80626a55 DE |
12231 | sections->loc.size = bfd_get_section_size (sectp); |
12232 | } | |
12233 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12234 | { | |
12235 | /* There can be only one. */ | |
049412e3 | 12236 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12237 | return 0; |
049412e3 | 12238 | sections->macinfo.s.section = sectp; |
80626a55 DE |
12239 | sections->macinfo.size = bfd_get_section_size (sectp); |
12240 | } | |
12241 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12242 | { | |
12243 | /* There can be only one. */ | |
049412e3 | 12244 | if (sections->macro.s.section != NULL) |
80626a55 | 12245 | return 0; |
049412e3 | 12246 | sections->macro.s.section = sectp; |
80626a55 DE |
12247 | sections->macro.size = bfd_get_section_size (sectp); |
12248 | } | |
12249 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12250 | { | |
12251 | /* There can be only one. */ | |
049412e3 | 12252 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12253 | return 0; |
049412e3 | 12254 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
12255 | sections->str_offsets.size = bfd_get_section_size (sectp); |
12256 | } | |
12257 | else | |
12258 | { | |
12259 | /* No other kind of section is valid. */ | |
12260 | return 0; | |
12261 | } | |
12262 | ||
12263 | return 1; | |
12264 | } | |
12265 | ||
73869dc2 DE |
12266 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12267 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12268 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12269 | This is for DWP version 1 files. */ | |
80626a55 DE |
12270 | |
12271 | static struct dwo_unit * | |
ed2dc618 SM |
12272 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12273 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12274 | uint32_t unit_index, |
12275 | const char *comp_dir, | |
12276 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12277 | { |
12278 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12279 | const struct dwp_hash_table *dwp_htab = |
12280 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
12281 | bfd *dbfd = dwp_file->dbfd; |
12282 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12283 | struct dwo_file *dwo_file; | |
12284 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12285 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12286 | void **dwo_file_slot; |
80626a55 DE |
12287 | int i; |
12288 | ||
73869dc2 DE |
12289 | gdb_assert (dwp_file->version == 1); |
12290 | ||
b4f54984 | 12291 | if (dwarf_read_debug) |
80626a55 | 12292 | { |
73869dc2 | 12293 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12294 | kind, |
73869dc2 | 12295 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12296 | dwp_file->name); |
12297 | } | |
12298 | ||
19ac8c2e | 12299 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12300 | Put a limit on the number of sections we look for so that bad data |
12301 | doesn't cause us to loop forever. */ | |
12302 | ||
73869dc2 | 12303 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12304 | (1 /* .debug_info or .debug_types */ \ |
12305 | + 1 /* .debug_abbrev */ \ | |
12306 | + 1 /* .debug_line */ \ | |
12307 | + 1 /* .debug_loc */ \ | |
12308 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12309 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12310 | + 1 /* trailing zero */) |
12311 | ||
12312 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12313 | |
73869dc2 | 12314 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12315 | { |
12316 | asection *sectp; | |
12317 | uint32_t section_nr = | |
12318 | read_4_bytes (dbfd, | |
73869dc2 DE |
12319 | dwp_htab->section_pool.v1.indices |
12320 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12321 | |
12322 | if (section_nr == 0) | |
12323 | break; | |
12324 | if (section_nr >= dwp_file->num_sections) | |
12325 | { | |
12326 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12327 | " [in module %s]"), | |
12328 | dwp_file->name); | |
12329 | } | |
12330 | ||
12331 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12332 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12333 | { |
12334 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12335 | " [in module %s]"), | |
12336 | dwp_file->name); | |
12337 | } | |
12338 | } | |
12339 | ||
12340 | if (i < 2 | |
a32a8923 DE |
12341 | || dwarf2_section_empty_p (§ions.info_or_types) |
12342 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12343 | { |
12344 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12345 | " [in module %s]"), | |
12346 | dwp_file->name); | |
12347 | } | |
73869dc2 | 12348 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12349 | { |
12350 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12351 | " [in module %s]"), | |
12352 | dwp_file->name); | |
12353 | } | |
12354 | ||
12355 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12356 | have dwo_unit "live" in that. At least for now. | |
12357 | ||
12358 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12359 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12360 | file, we can combine them back into a virtual DWO file to save space |
12361 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12362 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12363 | ||
791afaa2 TT |
12364 | std::string virtual_dwo_name = |
12365 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12366 | get_section_id (§ions.abbrev), | |
12367 | get_section_id (§ions.line), | |
12368 | get_section_id (§ions.loc), | |
12369 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12370 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12371 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12372 | virtual_dwo_name.c_str (), | |
12373 | comp_dir); | |
80626a55 DE |
12374 | /* Create one if necessary. */ |
12375 | if (*dwo_file_slot == NULL) | |
12376 | { | |
b4f54984 | 12377 | if (dwarf_read_debug) |
80626a55 DE |
12378 | { |
12379 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12380 | virtual_dwo_name.c_str ()); |
80626a55 DE |
12381 | } |
12382 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12383 | dwo_file->dwo_name |
12384 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12385 | virtual_dwo_name.c_str (), |
12386 | virtual_dwo_name.size ()); | |
0ac5b59e | 12387 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12388 | dwo_file->sections.abbrev = sections.abbrev; |
12389 | dwo_file->sections.line = sections.line; | |
12390 | dwo_file->sections.loc = sections.loc; | |
12391 | dwo_file->sections.macinfo = sections.macinfo; | |
12392 | dwo_file->sections.macro = sections.macro; | |
12393 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12394 | /* The "str" section is global to the entire DWP file. */ | |
12395 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12396 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12397 | there's no need to record it in dwo_file. |
12398 | Also, we can't simply record type sections in dwo_file because | |
12399 | we record a pointer into the vector in dwo_unit. As we collect more | |
12400 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12401 | for it, invalidating all copies of pointers into the previous |
12402 | contents. */ | |
80626a55 DE |
12403 | *dwo_file_slot = dwo_file; |
12404 | } | |
12405 | else | |
12406 | { | |
b4f54984 | 12407 | if (dwarf_read_debug) |
80626a55 DE |
12408 | { |
12409 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12410 | virtual_dwo_name.c_str ()); |
80626a55 | 12411 | } |
9a3c8263 | 12412 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12413 | } |
80626a55 DE |
12414 | |
12415 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12416 | dwo_unit->dwo_file = dwo_file; | |
12417 | dwo_unit->signature = signature; | |
8d749320 SM |
12418 | dwo_unit->section = |
12419 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12420 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12421 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12422 | |
12423 | return dwo_unit; | |
12424 | } | |
12425 | ||
73869dc2 DE |
12426 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12427 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12428 | piece within that section used by a TU/CU, return a virtual section | |
12429 | of just that piece. */ | |
12430 | ||
12431 | static struct dwarf2_section_info | |
ed2dc618 SM |
12432 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12433 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12434 | bfd_size_type offset, bfd_size_type size) |
12435 | { | |
12436 | struct dwarf2_section_info result; | |
12437 | asection *sectp; | |
12438 | ||
12439 | gdb_assert (section != NULL); | |
12440 | gdb_assert (!section->is_virtual); | |
12441 | ||
12442 | memset (&result, 0, sizeof (result)); | |
12443 | result.s.containing_section = section; | |
12444 | result.is_virtual = 1; | |
12445 | ||
12446 | if (size == 0) | |
12447 | return result; | |
12448 | ||
12449 | sectp = get_section_bfd_section (section); | |
12450 | ||
12451 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12452 | bounds of the real section. This is a pretty-rare event, so just | |
12453 | flag an error (easier) instead of a warning and trying to cope. */ | |
12454 | if (sectp == NULL | |
12455 | || offset + size > bfd_get_section_size (sectp)) | |
12456 | { | |
73869dc2 DE |
12457 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12458 | " in section %s [in module %s]"), | |
12459 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
12460 | objfile_name (dwarf2_per_objfile->objfile)); | |
12461 | } | |
12462 | ||
12463 | result.virtual_offset = offset; | |
12464 | result.size = size; | |
12465 | return result; | |
12466 | } | |
12467 | ||
12468 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12469 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12470 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12471 | This is for DWP version 2 files. */ | |
12472 | ||
12473 | static struct dwo_unit * | |
ed2dc618 SM |
12474 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12475 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12476 | uint32_t unit_index, |
12477 | const char *comp_dir, | |
12478 | ULONGEST signature, int is_debug_types) | |
12479 | { | |
12480 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12481 | const struct dwp_hash_table *dwp_htab = | |
12482 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12483 | bfd *dbfd = dwp_file->dbfd; | |
12484 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12485 | struct dwo_file *dwo_file; | |
12486 | struct dwo_unit *dwo_unit; | |
12487 | struct virtual_v2_dwo_sections sections; | |
12488 | void **dwo_file_slot; | |
73869dc2 DE |
12489 | int i; |
12490 | ||
12491 | gdb_assert (dwp_file->version == 2); | |
12492 | ||
b4f54984 | 12493 | if (dwarf_read_debug) |
73869dc2 DE |
12494 | { |
12495 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12496 | kind, | |
12497 | pulongest (unit_index), hex_string (signature), | |
12498 | dwp_file->name); | |
12499 | } | |
12500 | ||
12501 | /* Fetch the section offsets of this DWO unit. */ | |
12502 | ||
12503 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12504 | |
12505 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12506 | { | |
12507 | uint32_t offset = read_4_bytes (dbfd, | |
12508 | dwp_htab->section_pool.v2.offsets | |
12509 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12510 | + i) | |
12511 | * sizeof (uint32_t))); | |
12512 | uint32_t size = read_4_bytes (dbfd, | |
12513 | dwp_htab->section_pool.v2.sizes | |
12514 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12515 | + i) | |
12516 | * sizeof (uint32_t))); | |
12517 | ||
12518 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12519 | { | |
12520 | case DW_SECT_INFO: | |
12521 | case DW_SECT_TYPES: | |
12522 | sections.info_or_types_offset = offset; | |
12523 | sections.info_or_types_size = size; | |
12524 | break; | |
12525 | case DW_SECT_ABBREV: | |
12526 | sections.abbrev_offset = offset; | |
12527 | sections.abbrev_size = size; | |
12528 | break; | |
12529 | case DW_SECT_LINE: | |
12530 | sections.line_offset = offset; | |
12531 | sections.line_size = size; | |
12532 | break; | |
12533 | case DW_SECT_LOC: | |
12534 | sections.loc_offset = offset; | |
12535 | sections.loc_size = size; | |
12536 | break; | |
12537 | case DW_SECT_STR_OFFSETS: | |
12538 | sections.str_offsets_offset = offset; | |
12539 | sections.str_offsets_size = size; | |
12540 | break; | |
12541 | case DW_SECT_MACINFO: | |
12542 | sections.macinfo_offset = offset; | |
12543 | sections.macinfo_size = size; | |
12544 | break; | |
12545 | case DW_SECT_MACRO: | |
12546 | sections.macro_offset = offset; | |
12547 | sections.macro_size = size; | |
12548 | break; | |
12549 | } | |
12550 | } | |
12551 | ||
12552 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12553 | have dwo_unit "live" in that. At least for now. | |
12554 | ||
12555 | The DWP file can be made up of a random collection of CUs and TUs. | |
12556 | However, for each CU + set of TUs that came from the same original DWO | |
12557 | file, we can combine them back into a virtual DWO file to save space | |
12558 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12559 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12560 | ||
791afaa2 TT |
12561 | std::string virtual_dwo_name = |
12562 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12563 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12564 | (long) (sections.line_size ? sections.line_offset : 0), | |
12565 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12566 | (long) (sections.str_offsets_size | |
12567 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12568 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12569 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12570 | virtual_dwo_name.c_str (), | |
12571 | comp_dir); | |
73869dc2 DE |
12572 | /* Create one if necessary. */ |
12573 | if (*dwo_file_slot == NULL) | |
12574 | { | |
b4f54984 | 12575 | if (dwarf_read_debug) |
73869dc2 DE |
12576 | { |
12577 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12578 | virtual_dwo_name.c_str ()); |
73869dc2 DE |
12579 | } |
12580 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12581 | dwo_file->dwo_name |
12582 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12583 | virtual_dwo_name.c_str (), |
12584 | virtual_dwo_name.size ()); | |
73869dc2 DE |
12585 | dwo_file->comp_dir = comp_dir; |
12586 | dwo_file->sections.abbrev = | |
ed2dc618 | 12587 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12588 | sections.abbrev_offset, sections.abbrev_size); |
12589 | dwo_file->sections.line = | |
ed2dc618 | 12590 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12591 | sections.line_offset, sections.line_size); |
12592 | dwo_file->sections.loc = | |
ed2dc618 | 12593 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12594 | sections.loc_offset, sections.loc_size); |
12595 | dwo_file->sections.macinfo = | |
ed2dc618 | 12596 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12597 | sections.macinfo_offset, sections.macinfo_size); |
12598 | dwo_file->sections.macro = | |
ed2dc618 | 12599 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12600 | sections.macro_offset, sections.macro_size); |
12601 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12602 | create_dwp_v2_section (dwarf2_per_objfile, |
12603 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12604 | sections.str_offsets_offset, |
12605 | sections.str_offsets_size); | |
12606 | /* The "str" section is global to the entire DWP file. */ | |
12607 | dwo_file->sections.str = dwp_file->sections.str; | |
12608 | /* The info or types section is assigned below to dwo_unit, | |
12609 | there's no need to record it in dwo_file. | |
12610 | Also, we can't simply record type sections in dwo_file because | |
12611 | we record a pointer into the vector in dwo_unit. As we collect more | |
12612 | types we'll grow the vector and eventually have to reallocate space | |
12613 | for it, invalidating all copies of pointers into the previous | |
12614 | contents. */ | |
12615 | *dwo_file_slot = dwo_file; | |
12616 | } | |
12617 | else | |
12618 | { | |
b4f54984 | 12619 | if (dwarf_read_debug) |
73869dc2 DE |
12620 | { |
12621 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12622 | virtual_dwo_name.c_str ()); |
73869dc2 | 12623 | } |
9a3c8263 | 12624 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12625 | } |
73869dc2 DE |
12626 | |
12627 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12628 | dwo_unit->dwo_file = dwo_file; | |
12629 | dwo_unit->signature = signature; | |
8d749320 SM |
12630 | dwo_unit->section = |
12631 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12632 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12633 | is_debug_types | |
73869dc2 DE |
12634 | ? &dwp_file->sections.types |
12635 | : &dwp_file->sections.info, | |
12636 | sections.info_or_types_offset, | |
12637 | sections.info_or_types_size); | |
12638 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12639 | ||
12640 | return dwo_unit; | |
12641 | } | |
12642 | ||
57d63ce2 DE |
12643 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12644 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12645 | |
12646 | static struct dwo_unit * | |
ed2dc618 SM |
12647 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12648 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12649 | ULONGEST signature, int is_debug_types) |
80626a55 | 12650 | { |
57d63ce2 DE |
12651 | const struct dwp_hash_table *dwp_htab = |
12652 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 12653 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 12654 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12655 | uint32_t hash = signature & mask; |
12656 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12657 | unsigned int i; | |
12658 | void **slot; | |
870f88f7 | 12659 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12660 | |
12661 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12662 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12663 | slot = htab_find_slot (is_debug_types |
12664 | ? dwp_file->loaded_tus | |
12665 | : dwp_file->loaded_cus, | |
12666 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12667 | |
12668 | if (*slot != NULL) | |
9a3c8263 | 12669 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12670 | |
12671 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12672 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12673 | { |
12674 | ULONGEST signature_in_table; | |
12675 | ||
12676 | signature_in_table = | |
57d63ce2 | 12677 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12678 | if (signature_in_table == signature) |
12679 | { | |
57d63ce2 DE |
12680 | uint32_t unit_index = |
12681 | read_4_bytes (dbfd, | |
12682 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12683 | |
73869dc2 DE |
12684 | if (dwp_file->version == 1) |
12685 | { | |
ed2dc618 SM |
12686 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12687 | dwp_file, unit_index, | |
73869dc2 DE |
12688 | comp_dir, signature, |
12689 | is_debug_types); | |
12690 | } | |
12691 | else | |
12692 | { | |
ed2dc618 SM |
12693 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12694 | dwp_file, unit_index, | |
73869dc2 DE |
12695 | comp_dir, signature, |
12696 | is_debug_types); | |
12697 | } | |
9a3c8263 | 12698 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12699 | } |
12700 | if (signature_in_table == 0) | |
12701 | return NULL; | |
12702 | hash = (hash + hash2) & mask; | |
12703 | } | |
12704 | ||
12705 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12706 | " [in module %s]"), | |
12707 | dwp_file->name); | |
12708 | } | |
12709 | ||
ab5088bf | 12710 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12711 | Open the file specified by FILE_NAME and hand it off to BFD for |
12712 | preliminary analysis. Return a newly initialized bfd *, which | |
12713 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12714 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12715 | SEARCH_CWD is true if the current directory is to be searched. |
12716 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12717 | If successful, the file is added to the bfd include table of the |
12718 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12719 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12720 | NOTE: This function is derived from symfile_bfd_open. */ |
12721 | ||
192b62ce | 12722 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12723 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12724 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12725 | { |
24b9144d | 12726 | int desc; |
9c02c129 DE |
12727 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12728 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12729 | to debug_file_directory. */ | |
e0cc99a6 | 12730 | const char *search_path; |
9c02c129 DE |
12731 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12732 | ||
e0cc99a6 | 12733 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12734 | if (search_cwd) |
12735 | { | |
12736 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12737 | { |
12738 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12739 | debug_file_directory, | |
12740 | (char *) NULL)); | |
12741 | search_path = search_path_holder.get (); | |
12742 | } | |
6ac97d4c | 12743 | else |
e0cc99a6 | 12744 | search_path = "."; |
6ac97d4c | 12745 | } |
9c02c129 | 12746 | else |
e0cc99a6 | 12747 | search_path = debug_file_directory; |
3019eac3 | 12748 | |
24b9144d | 12749 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12750 | if (is_dwp) |
12751 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12752 | |
12753 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12754 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12755 | O_RDONLY | O_BINARY, &absolute_name); |
12756 | if (desc < 0) | |
12757 | return NULL; | |
12758 | ||
e0cc99a6 TT |
12759 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12760 | gnutarget, desc)); | |
9c02c129 DE |
12761 | if (sym_bfd == NULL) |
12762 | return NULL; | |
192b62ce | 12763 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12764 | |
192b62ce TT |
12765 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12766 | return NULL; | |
3019eac3 | 12767 | |
13aaf454 DE |
12768 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12769 | This is important because things like demangled_names_hash lives in the | |
12770 | objfile's per_bfd space and may have references to things like symbol | |
12771 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12772 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12773 | |
3019eac3 DE |
12774 | return sym_bfd; |
12775 | } | |
12776 | ||
ab5088bf | 12777 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12778 | COMP_DIR is the DW_AT_comp_dir attribute. |
12779 | The result is the bfd handle of the file. | |
12780 | If there is a problem finding or opening the file, return NULL. | |
12781 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12782 | same as symfile_bfd_open. */ | |
12783 | ||
192b62ce | 12784 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12785 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12786 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12787 | { |
80626a55 | 12788 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12789 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12790 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12791 | |
12792 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12793 | ||
12794 | if (comp_dir != NULL) | |
12795 | { | |
b36cec19 PA |
12796 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
12797 | file_name, (char *) NULL); | |
3019eac3 DE |
12798 | |
12799 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12800 | search path, which seems useful. */ | |
ed2dc618 SM |
12801 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
12802 | path_to_try, | |
12803 | 0 /*is_dwp*/, | |
192b62ce | 12804 | 1 /*search_cwd*/)); |
3019eac3 DE |
12805 | xfree (path_to_try); |
12806 | if (abfd != NULL) | |
12807 | return abfd; | |
12808 | } | |
12809 | ||
12810 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12811 | is a list of paths. */ | |
12812 | ||
12813 | if (*debug_file_directory == '\0') | |
12814 | return NULL; | |
12815 | ||
ed2dc618 SM |
12816 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12817 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12818 | } |
12819 | ||
80626a55 DE |
12820 | /* This function is mapped across the sections and remembers the offset and |
12821 | size of each of the DWO debugging sections we are interested in. */ | |
12822 | ||
12823 | static void | |
12824 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12825 | { | |
9a3c8263 | 12826 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12827 | const struct dwop_section_names *names = &dwop_section_names; |
12828 | ||
12829 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12830 | { | |
049412e3 | 12831 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
12832 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
12833 | } | |
12834 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12835 | { | |
049412e3 | 12836 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
12837 | dwo_sections->info.size = bfd_get_section_size (sectp); |
12838 | } | |
12839 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12840 | { | |
049412e3 | 12841 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
12842 | dwo_sections->line.size = bfd_get_section_size (sectp); |
12843 | } | |
12844 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12845 | { | |
049412e3 | 12846 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
12847 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
12848 | } | |
12849 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12850 | { | |
049412e3 | 12851 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
12852 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
12853 | } | |
12854 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12855 | { | |
049412e3 | 12856 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
12857 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
12858 | } | |
12859 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12860 | { | |
049412e3 | 12861 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
12862 | dwo_sections->str.size = bfd_get_section_size (sectp); |
12863 | } | |
12864 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12865 | { | |
049412e3 | 12866 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
12867 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
12868 | } | |
12869 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12870 | { | |
12871 | struct dwarf2_section_info type_section; | |
12872 | ||
12873 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12874 | type_section.s.section = sectp; |
80626a55 DE |
12875 | type_section.size = bfd_get_section_size (sectp); |
12876 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
12877 | &type_section); | |
12878 | } | |
12879 | } | |
12880 | ||
ab5088bf | 12881 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12882 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12883 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12884 | |
12885 | static struct dwo_file * | |
0ac5b59e DE |
12886 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12887 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12888 | { |
ed2dc618 | 12889 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12890 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 12891 | |
ed2dc618 | 12892 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir)); |
80626a55 DE |
12893 | if (dbfd == NULL) |
12894 | { | |
b4f54984 | 12895 | if (dwarf_read_debug) |
80626a55 DE |
12896 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12897 | return NULL; | |
12898 | } | |
263db9a1 TT |
12899 | |
12900 | /* We use a unique pointer here, despite the obstack allocation, | |
12901 | because a dwo_file needs some cleanup if it is abandoned. */ | |
12902 | dwo_file_up dwo_file (OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
12903 | struct dwo_file)); | |
0ac5b59e DE |
12904 | dwo_file->dwo_name = dwo_name; |
12905 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 12906 | dwo_file->dbfd = dbfd.release (); |
3019eac3 | 12907 | |
192b62ce TT |
12908 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
12909 | &dwo_file->sections); | |
3019eac3 | 12910 | |
ed2dc618 SM |
12911 | create_cus_hash_table (dwarf2_per_objfile, *dwo_file, dwo_file->sections.info, |
12912 | dwo_file->cus); | |
3019eac3 | 12913 | |
263db9a1 | 12914 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12915 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12916 | |
b4f54984 | 12917 | if (dwarf_read_debug) |
80626a55 DE |
12918 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12919 | ||
263db9a1 | 12920 | return dwo_file.release (); |
3019eac3 DE |
12921 | } |
12922 | ||
80626a55 | 12923 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12924 | size of each of the DWP debugging sections common to version 1 and 2 that |
12925 | we are interested in. */ | |
3019eac3 | 12926 | |
80626a55 | 12927 | static void |
73869dc2 DE |
12928 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12929 | void *dwp_file_ptr) | |
3019eac3 | 12930 | { |
9a3c8263 | 12931 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12932 | const struct dwop_section_names *names = &dwop_section_names; |
12933 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12934 | |
80626a55 | 12935 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12936 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12937 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12938 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12939 | |
80626a55 DE |
12940 | /* Look for specific sections that we need. */ |
12941 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12942 | { | |
049412e3 | 12943 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
12944 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
12945 | } | |
12946 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12947 | { | |
049412e3 | 12948 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
12949 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
12950 | } | |
12951 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12952 | { | |
049412e3 | 12953 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
12954 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
12955 | } | |
12956 | } | |
3019eac3 | 12957 | |
73869dc2 DE |
12958 | /* This function is mapped across the sections and remembers the offset and |
12959 | size of each of the DWP version 2 debugging sections that we are interested | |
12960 | in. This is split into a separate function because we don't know if we | |
12961 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12962 | ||
12963 | static void | |
12964 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12965 | { | |
9a3c8263 | 12966 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12967 | const struct dwop_section_names *names = &dwop_section_names; |
12968 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12969 | ||
12970 | /* Record the ELF section number for later lookup: this is what the | |
12971 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12972 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12973 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12974 | ||
12975 | /* Look for specific sections that we need. */ | |
12976 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12977 | { | |
049412e3 | 12978 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
12979 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
12980 | } | |
12981 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12982 | { | |
049412e3 | 12983 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
12984 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
12985 | } | |
12986 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12987 | { | |
049412e3 | 12988 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
12989 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
12990 | } | |
12991 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12992 | { | |
049412e3 | 12993 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
12994 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
12995 | } | |
12996 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12997 | { | |
049412e3 | 12998 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
12999 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
13000 | } | |
13001 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13002 | { | |
049412e3 | 13003 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
13004 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
13005 | } | |
13006 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13007 | { | |
049412e3 | 13008 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
13009 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
13010 | } | |
13011 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13012 | { | |
049412e3 | 13013 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
13014 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
13015 | } | |
13016 | } | |
13017 | ||
80626a55 | 13018 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13019 | |
80626a55 DE |
13020 | static hashval_t |
13021 | hash_dwp_loaded_cutus (const void *item) | |
13022 | { | |
9a3c8263 | 13023 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13024 | |
80626a55 DE |
13025 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13026 | return dwo_unit->signature; | |
3019eac3 DE |
13027 | } |
13028 | ||
80626a55 | 13029 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13030 | |
80626a55 DE |
13031 | static int |
13032 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13033 | { |
9a3c8263 SM |
13034 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13035 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13036 | |
80626a55 DE |
13037 | return dua->signature == dub->signature; |
13038 | } | |
3019eac3 | 13039 | |
80626a55 | 13040 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13041 | |
80626a55 DE |
13042 | static htab_t |
13043 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13044 | { | |
13045 | return htab_create_alloc_ex (3, | |
13046 | hash_dwp_loaded_cutus, | |
13047 | eq_dwp_loaded_cutus, | |
13048 | NULL, | |
13049 | &objfile->objfile_obstack, | |
13050 | hashtab_obstack_allocate, | |
13051 | dummy_obstack_deallocate); | |
13052 | } | |
3019eac3 | 13053 | |
ab5088bf DE |
13054 | /* Try to open DWP file FILE_NAME. |
13055 | The result is the bfd handle of the file. | |
13056 | If there is a problem finding or opening the file, return NULL. | |
13057 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13058 | same as symfile_bfd_open. */ | |
13059 | ||
192b62ce | 13060 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13061 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13062 | const char *file_name) | |
ab5088bf | 13063 | { |
ed2dc618 SM |
13064 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13065 | 1 /*is_dwp*/, | |
192b62ce | 13066 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13067 | if (abfd != NULL) |
13068 | return abfd; | |
13069 | ||
13070 | /* Work around upstream bug 15652. | |
13071 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13072 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13073 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13074 | of the executable's path may have discarded the needed info. | |
13075 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13076 | .gnu_debuglink, but that doesn't exist yet.] | |
13077 | Strip the directory from FILE_NAME and search again. */ | |
13078 | if (*debug_file_directory != '\0') | |
13079 | { | |
13080 | /* Don't implicitly search the current directory here. | |
13081 | If the user wants to search "." to handle this case, | |
13082 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13083 | return try_open_dwop_file (dwarf2_per_objfile, |
13084 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13085 | 0 /*search_cwd*/); |
13086 | } | |
13087 | ||
13088 | return NULL; | |
ab5088bf DE |
13089 | } |
13090 | ||
80626a55 DE |
13091 | /* Initialize the use of the DWP file for the current objfile. |
13092 | By convention the name of the DWP file is ${objfile}.dwp. | |
13093 | The result is NULL if it can't be found. */ | |
a766d390 | 13094 | |
80626a55 | 13095 | static struct dwp_file * |
ed2dc618 | 13096 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13097 | { |
13098 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13099 | struct dwp_file *dwp_file; | |
80626a55 | 13100 | |
82bf32bc JK |
13101 | /* Try to find first .dwp for the binary file before any symbolic links |
13102 | resolving. */ | |
6c447423 DE |
13103 | |
13104 | /* If the objfile is a debug file, find the name of the real binary | |
13105 | file and get the name of dwp file from there. */ | |
d721ba37 | 13106 | std::string dwp_name; |
6c447423 DE |
13107 | if (objfile->separate_debug_objfile_backlink != NULL) |
13108 | { | |
13109 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13110 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13111 | |
d721ba37 | 13112 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13113 | } |
13114 | else | |
d721ba37 PA |
13115 | dwp_name = objfile->original_name; |
13116 | ||
13117 | dwp_name += ".dwp"; | |
80626a55 | 13118 | |
ed2dc618 | 13119 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13120 | if (dbfd == NULL |
13121 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13122 | { | |
13123 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13124 | dwp_name = objfile_name (objfile); |
13125 | dwp_name += ".dwp"; | |
ed2dc618 | 13126 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13127 | } |
13128 | ||
80626a55 DE |
13129 | if (dbfd == NULL) |
13130 | { | |
b4f54984 | 13131 | if (dwarf_read_debug) |
d721ba37 | 13132 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
80626a55 | 13133 | return NULL; |
3019eac3 | 13134 | } |
80626a55 | 13135 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
192b62ce TT |
13136 | dwp_file->name = bfd_get_filename (dbfd.get ()); |
13137 | dwp_file->dbfd = dbfd.release (); | |
c906108c | 13138 | |
80626a55 | 13139 | /* +1: section 0 is unused */ |
192b62ce | 13140 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
13141 | dwp_file->elf_sections = |
13142 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13143 | dwp_file->num_sections, asection *); | |
13144 | ||
192b62ce TT |
13145 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_common_dwp_sections, |
13146 | dwp_file); | |
80626a55 | 13147 | |
ed2dc618 | 13148 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file, 0); |
80626a55 | 13149 | |
ed2dc618 | 13150 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file, 1); |
80626a55 | 13151 | |
73869dc2 | 13152 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13153 | if (dwp_file->cus && dwp_file->tus |
13154 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13155 | { |
13156 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13157 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13158 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13159 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13160 | " TU version %s [in DWP file %s]"), | |
13161 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13162 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13163 | } |
08302ed2 DE |
13164 | |
13165 | if (dwp_file->cus) | |
13166 | dwp_file->version = dwp_file->cus->version; | |
13167 | else if (dwp_file->tus) | |
13168 | dwp_file->version = dwp_file->tus->version; | |
13169 | else | |
13170 | dwp_file->version = 2; | |
73869dc2 DE |
13171 | |
13172 | if (dwp_file->version == 2) | |
192b62ce TT |
13173 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_v2_dwp_sections, |
13174 | dwp_file); | |
73869dc2 | 13175 | |
19ac8c2e DE |
13176 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13177 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13178 | |
b4f54984 | 13179 | if (dwarf_read_debug) |
80626a55 DE |
13180 | { |
13181 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13182 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13183 | " %s CUs, %s TUs\n", |
13184 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13185 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13186 | } |
13187 | ||
13188 | return dwp_file; | |
3019eac3 | 13189 | } |
c906108c | 13190 | |
ab5088bf DE |
13191 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13192 | ||
13193 | static struct dwp_file * | |
ed2dc618 | 13194 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13195 | { |
13196 | if (! dwarf2_per_objfile->dwp_checked) | |
13197 | { | |
ed2dc618 SM |
13198 | dwarf2_per_objfile->dwp_file |
13199 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13200 | dwarf2_per_objfile->dwp_checked = 1; |
13201 | } | |
13202 | return dwarf2_per_objfile->dwp_file; | |
13203 | } | |
13204 | ||
80626a55 DE |
13205 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13206 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13207 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13208 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13209 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13210 | ||
13211 | This is called, for example, when wanting to read a variable with a | |
13212 | complex location. Therefore we don't want to do file i/o for every call. | |
13213 | Therefore we don't want to look for a DWO file on every call. | |
13214 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13215 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13216 | for a DWO file. | |
13217 | ||
1c658ad5 | 13218 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13219 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13220 | |
3019eac3 | 13221 | static struct dwo_unit * |
80626a55 DE |
13222 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13223 | const char *dwo_name, const char *comp_dir, | |
13224 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13225 | { |
ed2dc618 | 13226 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13227 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13228 | const char *kind = is_debug_types ? "TU" : "CU"; |
13229 | void **dwo_file_slot; | |
3019eac3 | 13230 | struct dwo_file *dwo_file; |
80626a55 | 13231 | struct dwp_file *dwp_file; |
cb1df416 | 13232 | |
6a506a2d DE |
13233 | /* First see if there's a DWP file. |
13234 | If we have a DWP file but didn't find the DWO inside it, don't | |
13235 | look for the original DWO file. It makes gdb behave differently | |
13236 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13237 | |
ed2dc618 | 13238 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13239 | if (dwp_file != NULL) |
cf2c3c16 | 13240 | { |
80626a55 DE |
13241 | const struct dwp_hash_table *dwp_htab = |
13242 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13243 | ||
13244 | if (dwp_htab != NULL) | |
13245 | { | |
13246 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13247 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13248 | signature, is_debug_types); |
80626a55 DE |
13249 | |
13250 | if (dwo_cutu != NULL) | |
13251 | { | |
b4f54984 | 13252 | if (dwarf_read_debug) |
80626a55 DE |
13253 | { |
13254 | fprintf_unfiltered (gdb_stdlog, | |
13255 | "Virtual DWO %s %s found: @%s\n", | |
13256 | kind, hex_string (signature), | |
13257 | host_address_to_string (dwo_cutu)); | |
13258 | } | |
13259 | return dwo_cutu; | |
13260 | } | |
13261 | } | |
13262 | } | |
6a506a2d | 13263 | else |
80626a55 | 13264 | { |
6a506a2d | 13265 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13266 | |
ed2dc618 SM |
13267 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13268 | dwo_name, comp_dir); | |
6a506a2d | 13269 | if (*dwo_file_slot == NULL) |
80626a55 | 13270 | { |
6a506a2d DE |
13271 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13272 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13273 | } |
6a506a2d | 13274 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13275 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13276 | |
6a506a2d | 13277 | if (dwo_file != NULL) |
19c3d4c9 | 13278 | { |
6a506a2d DE |
13279 | struct dwo_unit *dwo_cutu = NULL; |
13280 | ||
13281 | if (is_debug_types && dwo_file->tus) | |
13282 | { | |
13283 | struct dwo_unit find_dwo_cutu; | |
13284 | ||
13285 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13286 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13287 | dwo_cutu |
13288 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13289 | } |
33c5cd75 | 13290 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13291 | { |
33c5cd75 DB |
13292 | struct dwo_unit find_dwo_cutu; |
13293 | ||
13294 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13295 | find_dwo_cutu.signature = signature; | |
13296 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13297 | &find_dwo_cutu); | |
6a506a2d DE |
13298 | } |
13299 | ||
13300 | if (dwo_cutu != NULL) | |
13301 | { | |
b4f54984 | 13302 | if (dwarf_read_debug) |
6a506a2d DE |
13303 | { |
13304 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13305 | kind, dwo_name, hex_string (signature), | |
13306 | host_address_to_string (dwo_cutu)); | |
13307 | } | |
13308 | return dwo_cutu; | |
80626a55 DE |
13309 | } |
13310 | } | |
2e276125 | 13311 | } |
9cdd5dbd | 13312 | |
80626a55 DE |
13313 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13314 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13315 | correctly to find the file. */ | |
13316 | ||
b4f54984 | 13317 | if (dwarf_read_debug) |
80626a55 DE |
13318 | { |
13319 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13320 | kind, dwo_name, hex_string (signature)); | |
13321 | } | |
3019eac3 | 13322 | |
6656a72d DE |
13323 | /* This is a warning and not a complaint because it can be caused by |
13324 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13325 | { |
13326 | /* Print the name of the DWP file if we looked there, helps the user | |
13327 | better diagnose the problem. */ | |
791afaa2 | 13328 | std::string dwp_text; |
43942612 DE |
13329 | |
13330 | if (dwp_file != NULL) | |
791afaa2 TT |
13331 | dwp_text = string_printf (" [in DWP file %s]", |
13332 | lbasename (dwp_file->name)); | |
43942612 | 13333 | |
9d8780f0 | 13334 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13335 | " [in module %s]"), |
13336 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13337 | dwp_text.c_str (), |
43942612 | 13338 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13339 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13340 | } |
3019eac3 | 13341 | return NULL; |
5fb290d7 DJ |
13342 | } |
13343 | ||
80626a55 DE |
13344 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13345 | See lookup_dwo_cutu_unit for details. */ | |
13346 | ||
13347 | static struct dwo_unit * | |
13348 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13349 | const char *dwo_name, const char *comp_dir, | |
13350 | ULONGEST signature) | |
13351 | { | |
13352 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13353 | } | |
13354 | ||
13355 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13356 | See lookup_dwo_cutu_unit for details. */ | |
13357 | ||
13358 | static struct dwo_unit * | |
13359 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13360 | const char *dwo_name, const char *comp_dir) | |
13361 | { | |
13362 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13363 | } | |
13364 | ||
89e63ee4 DE |
13365 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13366 | ||
13367 | static int | |
13368 | queue_and_load_dwo_tu (void **slot, void *info) | |
13369 | { | |
13370 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13371 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13372 | ULONGEST signature = dwo_unit->signature; | |
13373 | struct signatured_type *sig_type = | |
13374 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13375 | ||
13376 | if (sig_type != NULL) | |
13377 | { | |
13378 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13379 | ||
13380 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13381 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13382 | while processing PER_CU. */ | |
13383 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13384 | load_full_type_unit (sig_cu); | |
13385 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
13386 | } | |
13387 | ||
13388 | return 1; | |
13389 | } | |
13390 | ||
13391 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13392 | The DWO may have the only definition of the type, though it may not be | |
13393 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13394 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13395 | ||
13396 | static void | |
13397 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13398 | { | |
13399 | struct dwo_unit *dwo_unit; | |
13400 | struct dwo_file *dwo_file; | |
13401 | ||
13402 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13403 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13404 | gdb_assert (per_cu->cu != NULL); |
13405 | ||
13406 | dwo_unit = per_cu->cu->dwo_unit; | |
13407 | gdb_assert (dwo_unit != NULL); | |
13408 | ||
13409 | dwo_file = dwo_unit->dwo_file; | |
13410 | if (dwo_file->tus != NULL) | |
13411 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13412 | } | |
13413 | ||
3019eac3 | 13414 | /* Free all resources associated with DWO_FILE. |
5dafb3d1 | 13415 | Close the DWO file and munmap the sections. */ |
348e048f DE |
13416 | |
13417 | static void | |
5dafb3d1 | 13418 | free_dwo_file (struct dwo_file *dwo_file) |
348e048f | 13419 | { |
5c6fa7ab | 13420 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 13421 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 13422 | |
3019eac3 DE |
13423 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
13424 | } | |
348e048f | 13425 | |
3019eac3 | 13426 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 13427 | |
3019eac3 DE |
13428 | static int |
13429 | free_dwo_file_from_slot (void **slot, void *info) | |
13430 | { | |
13431 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
348e048f | 13432 | |
5dafb3d1 | 13433 | free_dwo_file (dwo_file); |
348e048f | 13434 | |
3019eac3 DE |
13435 | return 1; |
13436 | } | |
348e048f | 13437 | |
3019eac3 | 13438 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 13439 | |
3019eac3 DE |
13440 | static void |
13441 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
13442 | { | |
13443 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 13444 | } |
3019eac3 DE |
13445 | \f |
13446 | /* Read in various DIEs. */ | |
348e048f | 13447 | |
d389af10 | 13448 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13449 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13450 | already referenced by DW_AT_abstract_origin from the children of the | |
13451 | current DIE. */ | |
d389af10 JK |
13452 | |
13453 | static void | |
13454 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13455 | { | |
13456 | struct die_info *child_die; | |
791afaa2 | 13457 | sect_offset *offsetp; |
d389af10 JK |
13458 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13459 | struct die_info *origin_die; | |
13460 | /* Iterator of the ORIGIN_DIE children. */ | |
13461 | struct die_info *origin_child_die; | |
d389af10 | 13462 | struct attribute *attr; |
cd02d79d PA |
13463 | struct dwarf2_cu *origin_cu; |
13464 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13465 | |
13466 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13467 | if (!attr) | |
13468 | return; | |
13469 | ||
cd02d79d PA |
13470 | /* Note that following die references may follow to a die in a |
13471 | different cu. */ | |
13472 | ||
13473 | origin_cu = cu; | |
13474 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13475 | ||
13476 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13477 | symbols in. */ | |
13478 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13479 | origin_cu->list_in_scope = cu->list_in_scope; | |
13480 | ||
edb3359d DJ |
13481 | if (die->tag != origin_die->tag |
13482 | && !(die->tag == DW_TAG_inlined_subroutine | |
13483 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 | 13484 | complaint (&symfile_complaints, |
9d8780f0 SM |
13485 | _("DIE %s and its abstract origin %s have different tags"), |
13486 | sect_offset_str (die->sect_off), | |
13487 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13488 | |
791afaa2 | 13489 | std::vector<sect_offset> offsets; |
d389af10 | 13490 | |
3ea89b92 PMR |
13491 | for (child_die = die->child; |
13492 | child_die && child_die->tag; | |
13493 | child_die = sibling_die (child_die)) | |
13494 | { | |
13495 | struct die_info *child_origin_die; | |
13496 | struct dwarf2_cu *child_origin_cu; | |
13497 | ||
13498 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13499 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13500 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13501 | present in the abstract instance but not referenced in the concrete | |
13502 | one. */ | |
216f72a1 JK |
13503 | if (child_die->tag == DW_TAG_call_site |
13504 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13505 | continue; |
13506 | ||
c38f313d DJ |
13507 | /* For each CHILD_DIE, find the corresponding child of |
13508 | ORIGIN_DIE. If there is more than one layer of | |
13509 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13510 | but GCC versions at least through 4.4 generate this (GCC PR | |
13511 | 40573). */ | |
3ea89b92 PMR |
13512 | child_origin_die = child_die; |
13513 | child_origin_cu = cu; | |
c38f313d DJ |
13514 | while (1) |
13515 | { | |
cd02d79d PA |
13516 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13517 | child_origin_cu); | |
c38f313d DJ |
13518 | if (attr == NULL) |
13519 | break; | |
cd02d79d PA |
13520 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13521 | &child_origin_cu); | |
c38f313d DJ |
13522 | } |
13523 | ||
d389af10 JK |
13524 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13525 | counterpart may exist. */ | |
c38f313d | 13526 | if (child_origin_die != child_die) |
d389af10 | 13527 | { |
edb3359d DJ |
13528 | if (child_die->tag != child_origin_die->tag |
13529 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13530 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 | 13531 | complaint (&symfile_complaints, |
9d8780f0 | 13532 | _("Child DIE %s and its abstract origin %s have " |
9c541725 | 13533 | "different tags"), |
9d8780f0 SM |
13534 | sect_offset_str (child_die->sect_off), |
13535 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d DJ |
13536 | if (child_origin_die->parent != origin_die) |
13537 | complaint (&symfile_complaints, | |
9d8780f0 | 13538 | _("Child DIE %s and its abstract origin %s have " |
9c541725 | 13539 | "different parents"), |
9d8780f0 SM |
13540 | sect_offset_str (child_die->sect_off), |
13541 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13542 | else |
791afaa2 | 13543 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13544 | } |
d389af10 | 13545 | } |
791afaa2 TT |
13546 | std::sort (offsets.begin (), offsets.end ()); |
13547 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13548 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13549 | if (offsetp[-1] == *offsetp) |
3e43a32a | 13550 | complaint (&symfile_complaints, |
9d8780f0 SM |
13551 | _("Multiple children of DIE %s refer " |
13552 | "to DIE %s as their abstract origin"), | |
13553 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13554 | |
791afaa2 | 13555 | offsetp = offsets.data (); |
d389af10 JK |
13556 | origin_child_die = origin_die->child; |
13557 | while (origin_child_die && origin_child_die->tag) | |
13558 | { | |
13559 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13560 | while (offsetp < offsets_end |
9c541725 | 13561 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13562 | offsetp++; |
b64f50a1 | 13563 | if (offsetp >= offsets_end |
9c541725 | 13564 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13565 | { |
adde2bff DE |
13566 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13567 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13568 | This can happen with mutually referenced abstract_origins. | |
13569 | PR 16581. */ | |
13570 | if (!origin_child_die->in_process) | |
13571 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13572 | } |
13573 | origin_child_die = sibling_die (origin_child_die); | |
13574 | } | |
cd02d79d | 13575 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
13576 | } |
13577 | ||
c906108c | 13578 | static void |
e7c27a73 | 13579 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13580 | { |
518817b3 | 13581 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13582 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13583 | struct context_stack *newobj; |
c906108c SS |
13584 | CORE_ADDR lowpc; |
13585 | CORE_ADDR highpc; | |
13586 | struct die_info *child_die; | |
edb3359d | 13587 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13588 | const char *name; |
e142c38c | 13589 | CORE_ADDR baseaddr; |
801e3a5b | 13590 | struct block *block; |
edb3359d | 13591 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13592 | std::vector<struct symbol *> template_args; |
34eaf542 | 13593 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13594 | |
13595 | if (inlined_func) | |
13596 | { | |
13597 | /* If we do not have call site information, we can't show the | |
13598 | caller of this inlined function. That's too confusing, so | |
13599 | only use the scope for local variables. */ | |
13600 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13601 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13602 | if (call_line == NULL || call_file == NULL) | |
13603 | { | |
13604 | read_lexical_block_scope (die, cu); | |
13605 | return; | |
13606 | } | |
13607 | } | |
c906108c | 13608 | |
e142c38c DJ |
13609 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
13610 | ||
94af9270 | 13611 | name = dwarf2_name (die, cu); |
c906108c | 13612 | |
e8d05480 JB |
13613 | /* Ignore functions with missing or empty names. These are actually |
13614 | illegal according to the DWARF standard. */ | |
13615 | if (name == NULL) | |
13616 | { | |
13617 | complaint (&symfile_complaints, | |
9d8780f0 SM |
13618 | _("missing name for subprogram DIE at %s"), |
13619 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13620 | return; |
13621 | } | |
13622 | ||
13623 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13624 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13625 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13626 | { |
ae4d0c03 PM |
13627 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13628 | if (!attr || !DW_UNSND (attr)) | |
13629 | complaint (&symfile_complaints, | |
3e43a32a | 13630 | _("cannot get low and high bounds " |
9d8780f0 SM |
13631 | "for subprogram DIE at %s"), |
13632 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13633 | return; |
13634 | } | |
c906108c | 13635 | |
3e29f34a MR |
13636 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13637 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13638 | |
34eaf542 TT |
13639 | /* If we have any template arguments, then we must allocate a |
13640 | different sort of symbol. */ | |
13641 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13642 | { | |
13643 | if (child_die->tag == DW_TAG_template_type_param | |
13644 | || child_die->tag == DW_TAG_template_value_param) | |
13645 | { | |
e623cf5d | 13646 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13647 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13648 | break; |
13649 | } | |
13650 | } | |
13651 | ||
fe978cb0 | 13652 | newobj = push_context (0, lowpc); |
5e2db402 TT |
13653 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13654 | (struct symbol *) templ_func); | |
4c2df51b | 13655 | |
4cecd739 DJ |
13656 | /* If there is a location expression for DW_AT_frame_base, record |
13657 | it. */ | |
e142c38c | 13658 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 13659 | if (attr) |
fe978cb0 | 13660 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13661 | |
63e43d3a PMR |
13662 | /* If there is a location for the static link, record it. */ |
13663 | newobj->static_link = NULL; | |
13664 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
13665 | if (attr) | |
13666 | { | |
224c3ddb SM |
13667 | newobj->static_link |
13668 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
13669 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
13670 | } | |
13671 | ||
e142c38c | 13672 | cu->list_in_scope = &local_symbols; |
c906108c | 13673 | |
639d11d3 | 13674 | if (die->child != NULL) |
c906108c | 13675 | { |
639d11d3 | 13676 | child_die = die->child; |
c906108c SS |
13677 | while (child_die && child_die->tag) |
13678 | { | |
34eaf542 TT |
13679 | if (child_die->tag == DW_TAG_template_type_param |
13680 | || child_die->tag == DW_TAG_template_value_param) | |
13681 | { | |
13682 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13683 | ||
f1078f66 | 13684 | if (arg != NULL) |
2f4732b0 | 13685 | template_args.push_back (arg); |
34eaf542 TT |
13686 | } |
13687 | else | |
13688 | process_die (child_die, cu); | |
c906108c SS |
13689 | child_die = sibling_die (child_die); |
13690 | } | |
13691 | } | |
13692 | ||
d389af10 JK |
13693 | inherit_abstract_dies (die, cu); |
13694 | ||
4a811a97 UW |
13695 | /* If we have a DW_AT_specification, we might need to import using |
13696 | directives from the context of the specification DIE. See the | |
13697 | comment in determine_prefix. */ | |
13698 | if (cu->language == language_cplus | |
13699 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13700 | { | |
13701 | struct dwarf2_cu *spec_cu = cu; | |
13702 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13703 | ||
13704 | while (spec_die) | |
13705 | { | |
13706 | child_die = spec_die->child; | |
13707 | while (child_die && child_die->tag) | |
13708 | { | |
13709 | if (child_die->tag == DW_TAG_imported_module) | |
13710 | process_die (child_die, spec_cu); | |
13711 | child_die = sibling_die (child_die); | |
13712 | } | |
13713 | ||
13714 | /* In some cases, GCC generates specification DIEs that | |
13715 | themselves contain DW_AT_specification attributes. */ | |
13716 | spec_die = die_specification (spec_die, &spec_cu); | |
13717 | } | |
13718 | } | |
13719 | ||
fe978cb0 | 13720 | newobj = pop_context (); |
c906108c | 13721 | /* Make a block for the local symbols within. */ |
fe978cb0 | 13722 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
63e43d3a | 13723 | newobj->static_link, lowpc, highpc); |
801e3a5b | 13724 | |
df8a16a1 | 13725 | /* For C++, set the block's scope. */ |
45280282 IB |
13726 | if ((cu->language == language_cplus |
13727 | || cu->language == language_fortran | |
c44af4eb TT |
13728 | || cu->language == language_d |
13729 | || cu->language == language_rust) | |
4d4ec4e5 | 13730 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13731 | block_set_scope (block, determine_prefix (die, cu), |
13732 | &objfile->objfile_obstack); | |
df8a16a1 | 13733 | |
801e3a5b JB |
13734 | /* If we have address ranges, record them. */ |
13735 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13736 | |
fe978cb0 | 13737 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 13738 | |
34eaf542 | 13739 | /* Attach template arguments to function. */ |
2f4732b0 | 13740 | if (!template_args.empty ()) |
34eaf542 TT |
13741 | { |
13742 | gdb_assert (templ_func != NULL); | |
13743 | ||
2f4732b0 | 13744 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13745 | templ_func->template_arguments |
8d749320 SM |
13746 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13747 | templ_func->n_template_arguments); | |
34eaf542 | 13748 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13749 | template_args.data (), |
34eaf542 | 13750 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
34eaf542 TT |
13751 | } |
13752 | ||
208d8187 JB |
13753 | /* In C++, we can have functions nested inside functions (e.g., when |
13754 | a function declares a class that has methods). This means that | |
13755 | when we finish processing a function scope, we may need to go | |
13756 | back to building a containing block's symbol lists. */ | |
fe978cb0 | 13757 | local_symbols = newobj->locals; |
22cee43f | 13758 | local_using_directives = newobj->local_using_directives; |
208d8187 | 13759 | |
921e78cf JB |
13760 | /* If we've finished processing a top-level function, subsequent |
13761 | symbols go in the file symbol list. */ | |
13762 | if (outermost_context_p ()) | |
e142c38c | 13763 | cu->list_in_scope = &file_symbols; |
c906108c SS |
13764 | } |
13765 | ||
13766 | /* Process all the DIES contained within a lexical block scope. Start | |
13767 | a new scope, process the dies, and then close the scope. */ | |
13768 | ||
13769 | static void | |
e7c27a73 | 13770 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13771 | { |
518817b3 | 13772 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13773 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13774 | struct context_stack *newobj; |
c906108c SS |
13775 | CORE_ADDR lowpc, highpc; |
13776 | struct die_info *child_die; | |
e142c38c DJ |
13777 | CORE_ADDR baseaddr; |
13778 | ||
13779 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
13780 | |
13781 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13782 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13783 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13784 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13785 | describe ranges. */ |
e385593e JK |
13786 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13787 | { | |
13788 | case PC_BOUNDS_NOT_PRESENT: | |
13789 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13790 | there was no wrapping by that DW_TAG_lexical_block. | |
13791 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13792 | for (child_die = die->child; | |
13793 | child_die != NULL && child_die->tag; | |
13794 | child_die = sibling_die (child_die)) | |
13795 | process_die (child_die, cu); | |
13796 | return; | |
13797 | case PC_BOUNDS_INVALID: | |
13798 | return; | |
13799 | } | |
3e29f34a MR |
13800 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13801 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
13802 | |
13803 | push_context (0, lowpc); | |
639d11d3 | 13804 | if (die->child != NULL) |
c906108c | 13805 | { |
639d11d3 | 13806 | child_die = die->child; |
c906108c SS |
13807 | while (child_die && child_die->tag) |
13808 | { | |
e7c27a73 | 13809 | process_die (child_die, cu); |
c906108c SS |
13810 | child_die = sibling_die (child_die); |
13811 | } | |
13812 | } | |
3ea89b92 | 13813 | inherit_abstract_dies (die, cu); |
fe978cb0 | 13814 | newobj = pop_context (); |
c906108c | 13815 | |
22cee43f | 13816 | if (local_symbols != NULL || local_using_directives != NULL) |
c906108c | 13817 | { |
801e3a5b | 13818 | struct block *block |
63e43d3a | 13819 | = finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 13820 | newobj->start_addr, highpc); |
801e3a5b JB |
13821 | |
13822 | /* Note that recording ranges after traversing children, as we | |
13823 | do here, means that recording a parent's ranges entails | |
13824 | walking across all its children's ranges as they appear in | |
13825 | the address map, which is quadratic behavior. | |
13826 | ||
13827 | It would be nicer to record the parent's ranges before | |
13828 | traversing its children, simply overriding whatever you find | |
13829 | there. But since we don't even decide whether to create a | |
13830 | block until after we've traversed its children, that's hard | |
13831 | to do. */ | |
13832 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13833 | } |
fe978cb0 | 13834 | local_symbols = newobj->locals; |
22cee43f | 13835 | local_using_directives = newobj->local_using_directives; |
c906108c SS |
13836 | } |
13837 | ||
216f72a1 | 13838 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13839 | |
13840 | static void | |
13841 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13842 | { | |
518817b3 | 13843 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13844 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13845 | CORE_ADDR pc, baseaddr; | |
13846 | struct attribute *attr; | |
13847 | struct call_site *call_site, call_site_local; | |
13848 | void **slot; | |
13849 | int nparams; | |
13850 | struct die_info *child_die; | |
13851 | ||
13852 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
13853 | ||
216f72a1 JK |
13854 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13855 | if (attr == NULL) | |
13856 | { | |
13857 | /* This was a pre-DWARF-5 GNU extension alias | |
13858 | for DW_AT_call_return_pc. */ | |
13859 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13860 | } | |
96408a79 SA |
13861 | if (!attr) |
13862 | { | |
13863 | complaint (&symfile_complaints, | |
216f72a1 | 13864 | _("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13865 | "DIE %s [in module %s]"), |
13866 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13867 | return; |
13868 | } | |
31aa7e4e | 13869 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 13870 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13871 | |
13872 | if (cu->call_site_htab == NULL) | |
13873 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13874 | NULL, &objfile->objfile_obstack, | |
13875 | hashtab_obstack_allocate, NULL); | |
13876 | call_site_local.pc = pc; | |
13877 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13878 | if (*slot != NULL) | |
13879 | { | |
13880 | complaint (&symfile_complaints, | |
216f72a1 | 13881 | _("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13882 | "DIE %s [in module %s]"), |
13883 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13884 | objfile_name (objfile)); |
96408a79 SA |
13885 | return; |
13886 | } | |
13887 | ||
13888 | /* Count parameters at the caller. */ | |
13889 | ||
13890 | nparams = 0; | |
13891 | for (child_die = die->child; child_die && child_die->tag; | |
13892 | child_die = sibling_die (child_die)) | |
13893 | { | |
216f72a1 JK |
13894 | if (child_die->tag != DW_TAG_call_site_parameter |
13895 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13896 | { |
13897 | complaint (&symfile_complaints, | |
216f72a1 | 13898 | _("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13899 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13900 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13901 | objfile_name (objfile)); |
96408a79 SA |
13902 | continue; |
13903 | } | |
13904 | ||
13905 | nparams++; | |
13906 | } | |
13907 | ||
224c3ddb SM |
13908 | call_site |
13909 | = ((struct call_site *) | |
13910 | obstack_alloc (&objfile->objfile_obstack, | |
13911 | sizeof (*call_site) | |
13912 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13913 | *slot = call_site; |
13914 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13915 | call_site->pc = pc; | |
13916 | ||
216f72a1 JK |
13917 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13918 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13919 | { |
13920 | struct die_info *func_die; | |
13921 | ||
13922 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13923 | for (func_die = die->parent; | |
13924 | func_die && func_die->tag != DW_TAG_subprogram | |
13925 | && func_die->tag != DW_TAG_subroutine_type; | |
13926 | func_die = func_die->parent); | |
13927 | ||
216f72a1 JK |
13928 | /* DW_AT_call_all_calls is a superset |
13929 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13930 | if (func_die |
216f72a1 | 13931 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13932 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13933 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13934 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13935 | { | |
13936 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13937 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13938 | both the initial caller containing the real return address PC and | |
13939 | the final callee containing the current PC of a chain of tail | |
13940 | calls do not need to have the tail call list complete. But any | |
13941 | function candidate for a virtual tail call frame searched via | |
13942 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13943 | determined unambiguously. */ | |
13944 | } | |
13945 | else | |
13946 | { | |
13947 | struct type *func_type = NULL; | |
13948 | ||
13949 | if (func_die) | |
13950 | func_type = get_die_type (func_die, cu); | |
13951 | if (func_type != NULL) | |
13952 | { | |
13953 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
13954 | ||
13955 | /* Enlist this call site to the function. */ | |
13956 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13957 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13958 | } | |
13959 | else | |
13960 | complaint (&symfile_complaints, | |
216f72a1 | 13961 | _("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13962 | "DIE %s [in module %s]"), |
13963 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13964 | } |
13965 | } | |
13966 | ||
216f72a1 JK |
13967 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13968 | if (attr == NULL) | |
13969 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13970 | if (attr == NULL) | |
13971 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13972 | if (attr == NULL) |
216f72a1 JK |
13973 | { |
13974 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13975 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13976 | } | |
96408a79 SA |
13977 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
13978 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
13979 | /* Keep NULL DWARF_BLOCK. */; | |
13980 | else if (attr_form_is_block (attr)) | |
13981 | { | |
13982 | struct dwarf2_locexpr_baton *dlbaton; | |
13983 | ||
8d749320 | 13984 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13985 | dlbaton->data = DW_BLOCK (attr)->data; |
13986 | dlbaton->size = DW_BLOCK (attr)->size; | |
13987 | dlbaton->per_cu = cu->per_cu; | |
13988 | ||
13989 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13990 | } | |
7771576e | 13991 | else if (attr_form_is_ref (attr)) |
96408a79 | 13992 | { |
96408a79 SA |
13993 | struct dwarf2_cu *target_cu = cu; |
13994 | struct die_info *target_die; | |
13995 | ||
ac9ec31b | 13996 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 13997 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
13998 | if (die_is_declaration (target_die, target_cu)) |
13999 | { | |
7d45c7c3 | 14000 | const char *target_physname; |
9112db09 JK |
14001 | |
14002 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14003 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14004 | if (target_physname == NULL) |
9112db09 | 14005 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 SA |
14006 | if (target_physname == NULL) |
14007 | complaint (&symfile_complaints, | |
216f72a1 | 14008 | _("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14009 | "physname, for referencing DIE %s [in module %s]"), |
14010 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14011 | else |
7d455152 | 14012 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14013 | } |
14014 | else | |
14015 | { | |
14016 | CORE_ADDR lowpc; | |
14017 | ||
14018 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14019 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14020 | <= PC_BOUNDS_INVALID) |
96408a79 | 14021 | complaint (&symfile_complaints, |
216f72a1 | 14022 | _("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14023 | "low pc, for referencing DIE %s [in module %s]"), |
14024 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14025 | else |
3e29f34a MR |
14026 | { |
14027 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14028 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14029 | } | |
96408a79 SA |
14030 | } |
14031 | } | |
14032 | else | |
14033 | complaint (&symfile_complaints, | |
216f72a1 | 14034 | _("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14035 | "block nor reference, for DIE %s [in module %s]"), |
14036 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14037 | |
14038 | call_site->per_cu = cu->per_cu; | |
14039 | ||
14040 | for (child_die = die->child; | |
14041 | child_die && child_die->tag; | |
14042 | child_die = sibling_die (child_die)) | |
14043 | { | |
96408a79 | 14044 | struct call_site_parameter *parameter; |
1788b2d3 | 14045 | struct attribute *loc, *origin; |
96408a79 | 14046 | |
216f72a1 JK |
14047 | if (child_die->tag != DW_TAG_call_site_parameter |
14048 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14049 | { |
14050 | /* Already printed the complaint above. */ | |
14051 | continue; | |
14052 | } | |
14053 | ||
14054 | gdb_assert (call_site->parameter_count < nparams); | |
14055 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14056 | ||
1788b2d3 JK |
14057 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14058 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14059 | register is contained in DW_AT_call_value. */ |
96408a79 | 14060 | |
24c5c679 | 14061 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14062 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14063 | if (origin == NULL) | |
14064 | { | |
14065 | /* This was a pre-DWARF-5 GNU extension alias | |
14066 | for DW_AT_call_parameter. */ | |
14067 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14068 | } | |
7771576e | 14069 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14070 | { |
1788b2d3 | 14071 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14072 | |
14073 | sect_offset sect_off | |
14074 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14075 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14076 | { |
14077 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14078 | binding can be done only inside one CU. Such referenced DIE | |
14079 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
14080 | complaint (&symfile_complaints, | |
216f72a1 | 14081 | _("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14082 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14083 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14084 | objfile_name (objfile)); |
d76b7dbc JK |
14085 | continue; |
14086 | } | |
9c541725 PA |
14087 | parameter->u.param_cu_off |
14088 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14089 | } |
14090 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
14091 | { |
14092 | complaint (&symfile_complaints, | |
14093 | _("No DW_FORM_block* DW_AT_location for " | |
9d8780f0 SM |
14094 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14095 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14096 | continue; |
14097 | } | |
24c5c679 | 14098 | else |
96408a79 | 14099 | { |
24c5c679 JK |
14100 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14101 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14102 | if (parameter->u.dwarf_reg != -1) | |
14103 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14104 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14105 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14106 | ¶meter->u.fb_offset)) | |
14107 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14108 | else | |
14109 | { | |
14110 | complaint (&symfile_complaints, | |
14111 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
14112 | "for DW_FORM_block* DW_AT_location is supported for " | |
9d8780f0 | 14113 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14114 | "[in module %s]"), |
9d8780f0 | 14115 | sect_offset_str (child_die->sect_off), |
9c541725 | 14116 | objfile_name (objfile)); |
24c5c679 JK |
14117 | continue; |
14118 | } | |
96408a79 SA |
14119 | } |
14120 | ||
216f72a1 JK |
14121 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14122 | if (attr == NULL) | |
14123 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14124 | if (!attr_form_is_block (attr)) |
14125 | { | |
14126 | complaint (&symfile_complaints, | |
216f72a1 | 14127 | _("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14128 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14129 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14130 | objfile_name (objfile)); |
96408a79 SA |
14131 | continue; |
14132 | } | |
14133 | parameter->value = DW_BLOCK (attr)->data; | |
14134 | parameter->value_size = DW_BLOCK (attr)->size; | |
14135 | ||
14136 | /* Parameters are not pre-cleared by memset above. */ | |
14137 | parameter->data_value = NULL; | |
14138 | parameter->data_value_size = 0; | |
14139 | call_site->parameter_count++; | |
14140 | ||
216f72a1 JK |
14141 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14142 | if (attr == NULL) | |
14143 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
14144 | if (attr) |
14145 | { | |
14146 | if (!attr_form_is_block (attr)) | |
14147 | complaint (&symfile_complaints, | |
216f72a1 | 14148 | _("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14149 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14150 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14151 | objfile_name (objfile)); |
96408a79 SA |
14152 | else |
14153 | { | |
14154 | parameter->data_value = DW_BLOCK (attr)->data; | |
14155 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14156 | } | |
14157 | } | |
14158 | } | |
14159 | } | |
14160 | ||
71a3c369 TT |
14161 | /* Helper function for read_variable. If DIE represents a virtual |
14162 | table, then return the type of the concrete object that is | |
14163 | associated with the virtual table. Otherwise, return NULL. */ | |
14164 | ||
14165 | static struct type * | |
14166 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14167 | { | |
14168 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14169 | if (attr == NULL) | |
14170 | return NULL; | |
14171 | ||
14172 | /* Find the type DIE. */ | |
14173 | struct die_info *type_die = NULL; | |
14174 | struct dwarf2_cu *type_cu = cu; | |
14175 | ||
14176 | if (attr_form_is_ref (attr)) | |
14177 | type_die = follow_die_ref (die, attr, &type_cu); | |
14178 | if (type_die == NULL) | |
14179 | return NULL; | |
14180 | ||
14181 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14182 | return NULL; | |
14183 | return die_containing_type (type_die, type_cu); | |
14184 | } | |
14185 | ||
14186 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14187 | ||
14188 | static void | |
14189 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14190 | { | |
14191 | struct rust_vtable_symbol *storage = NULL; | |
14192 | ||
14193 | if (cu->language == language_rust) | |
14194 | { | |
14195 | struct type *containing_type = rust_containing_type (die, cu); | |
14196 | ||
14197 | if (containing_type != NULL) | |
14198 | { | |
518817b3 | 14199 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 TT |
14200 | |
14201 | storage = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
14202 | struct rust_vtable_symbol); | |
14203 | initialize_objfile_symbol (storage); | |
14204 | storage->concrete_type = containing_type; | |
cf724bc9 | 14205 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14206 | } |
14207 | } | |
14208 | ||
5e2db402 | 14209 | new_symbol (die, NULL, cu, storage); |
71a3c369 TT |
14210 | } |
14211 | ||
43988095 JK |
14212 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14213 | reading .debug_rnglists. | |
14214 | Callback's type should be: | |
14215 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14216 | Return true if the attributes are present and valid, otherwise, | |
14217 | return false. */ | |
14218 | ||
14219 | template <typename Callback> | |
14220 | static bool | |
14221 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14222 | Callback &&callback) | |
14223 | { | |
ed2dc618 | 14224 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14225 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14226 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14227 | bfd *obfd = objfile->obfd; |
43988095 JK |
14228 | /* Base address selection entry. */ |
14229 | CORE_ADDR base; | |
14230 | int found_base; | |
43988095 | 14231 | const gdb_byte *buffer; |
43988095 JK |
14232 | CORE_ADDR baseaddr; |
14233 | bool overflow = false; | |
14234 | ||
14235 | found_base = cu->base_known; | |
14236 | base = cu->base_address; | |
14237 | ||
14238 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14239 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14240 | { | |
14241 | complaint (&symfile_complaints, | |
14242 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
14243 | offset); | |
14244 | return false; | |
14245 | } | |
14246 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14247 | ||
14248 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14249 | ||
14250 | while (1) | |
14251 | { | |
7814882a JK |
14252 | /* Initialize it due to a false compiler warning. */ |
14253 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14254 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14255 | + dwarf2_per_objfile->rnglists.size); | |
14256 | unsigned int bytes_read; | |
14257 | ||
14258 | if (buffer == buf_end) | |
14259 | { | |
14260 | overflow = true; | |
14261 | break; | |
14262 | } | |
14263 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14264 | switch (rlet) | |
14265 | { | |
14266 | case DW_RLE_end_of_list: | |
14267 | break; | |
14268 | case DW_RLE_base_address: | |
14269 | if (buffer + cu->header.addr_size > buf_end) | |
14270 | { | |
14271 | overflow = true; | |
14272 | break; | |
14273 | } | |
14274 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14275 | found_base = 1; | |
14276 | buffer += bytes_read; | |
14277 | break; | |
14278 | case DW_RLE_start_length: | |
14279 | if (buffer + cu->header.addr_size > buf_end) | |
14280 | { | |
14281 | overflow = true; | |
14282 | break; | |
14283 | } | |
14284 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14285 | buffer += bytes_read; | |
14286 | range_end = (range_beginning | |
14287 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14288 | buffer += bytes_read; | |
14289 | if (buffer > buf_end) | |
14290 | { | |
14291 | overflow = true; | |
14292 | break; | |
14293 | } | |
14294 | break; | |
14295 | case DW_RLE_offset_pair: | |
14296 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14297 | buffer += bytes_read; | |
14298 | if (buffer > buf_end) | |
14299 | { | |
14300 | overflow = true; | |
14301 | break; | |
14302 | } | |
14303 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14304 | buffer += bytes_read; | |
14305 | if (buffer > buf_end) | |
14306 | { | |
14307 | overflow = true; | |
14308 | break; | |
14309 | } | |
14310 | break; | |
14311 | case DW_RLE_start_end: | |
14312 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14313 | { | |
14314 | overflow = true; | |
14315 | break; | |
14316 | } | |
14317 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14318 | buffer += bytes_read; | |
14319 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14320 | buffer += bytes_read; | |
14321 | break; | |
14322 | default: | |
14323 | complaint (&symfile_complaints, | |
14324 | _("Invalid .debug_rnglists data (no base address)")); | |
14325 | return false; | |
14326 | } | |
14327 | if (rlet == DW_RLE_end_of_list || overflow) | |
14328 | break; | |
14329 | if (rlet == DW_RLE_base_address) | |
14330 | continue; | |
14331 | ||
14332 | if (!found_base) | |
14333 | { | |
14334 | /* We have no valid base address for the ranges | |
14335 | data. */ | |
14336 | complaint (&symfile_complaints, | |
14337 | _("Invalid .debug_rnglists data (no base address)")); | |
14338 | return false; | |
14339 | } | |
14340 | ||
14341 | if (range_beginning > range_end) | |
14342 | { | |
14343 | /* Inverted range entries are invalid. */ | |
14344 | complaint (&symfile_complaints, | |
14345 | _("Invalid .debug_rnglists data (inverted range)")); | |
14346 | return false; | |
14347 | } | |
14348 | ||
14349 | /* Empty range entries have no effect. */ | |
14350 | if (range_beginning == range_end) | |
14351 | continue; | |
14352 | ||
14353 | range_beginning += base; | |
14354 | range_end += base; | |
14355 | ||
14356 | /* A not-uncommon case of bad debug info. | |
14357 | Don't pollute the addrmap with bad data. */ | |
14358 | if (range_beginning + baseaddr == 0 | |
14359 | && !dwarf2_per_objfile->has_section_at_zero) | |
14360 | { | |
14361 | complaint (&symfile_complaints, | |
14362 | _(".debug_rnglists entry has start address of zero" | |
14363 | " [in module %s]"), objfile_name (objfile)); | |
14364 | continue; | |
14365 | } | |
14366 | ||
14367 | callback (range_beginning, range_end); | |
14368 | } | |
14369 | ||
14370 | if (overflow) | |
14371 | { | |
14372 | complaint (&symfile_complaints, | |
14373 | _("Offset %d is not terminated " | |
14374 | "for DW_AT_ranges attribute"), | |
14375 | offset); | |
14376 | return false; | |
14377 | } | |
14378 | ||
14379 | return true; | |
14380 | } | |
14381 | ||
14382 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14383 | Callback's type should be: | |
14384 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14385 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14386 | |
43988095 | 14387 | template <typename Callback> |
43039443 | 14388 | static int |
5f46c5a5 | 14389 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14390 | Callback &&callback) |
43039443 | 14391 | { |
ed2dc618 | 14392 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14393 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14394 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14395 | struct comp_unit_head *cu_header = &cu->header; |
14396 | bfd *obfd = objfile->obfd; | |
14397 | unsigned int addr_size = cu_header->addr_size; | |
14398 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14399 | /* Base address selection entry. */ | |
14400 | CORE_ADDR base; | |
14401 | int found_base; | |
14402 | unsigned int dummy; | |
d521ce57 | 14403 | const gdb_byte *buffer; |
ff013f42 | 14404 | CORE_ADDR baseaddr; |
43039443 | 14405 | |
43988095 JK |
14406 | if (cu_header->version >= 5) |
14407 | return dwarf2_rnglists_process (offset, cu, callback); | |
14408 | ||
d00adf39 DE |
14409 | found_base = cu->base_known; |
14410 | base = cu->base_address; | |
43039443 | 14411 | |
be391dca | 14412 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14413 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
14414 | { |
14415 | complaint (&symfile_complaints, | |
14416 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
14417 | offset); | |
14418 | return 0; | |
14419 | } | |
dce234bc | 14420 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14421 | |
e7030f15 | 14422 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 14423 | |
43039443 JK |
14424 | while (1) |
14425 | { | |
14426 | CORE_ADDR range_beginning, range_end; | |
14427 | ||
14428 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14429 | buffer += addr_size; | |
14430 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14431 | buffer += addr_size; | |
14432 | offset += 2 * addr_size; | |
14433 | ||
14434 | /* An end of list marker is a pair of zero addresses. */ | |
14435 | if (range_beginning == 0 && range_end == 0) | |
14436 | /* Found the end of list entry. */ | |
14437 | break; | |
14438 | ||
14439 | /* Each base address selection entry is a pair of 2 values. | |
14440 | The first is the largest possible address, the second is | |
14441 | the base address. Check for a base address here. */ | |
14442 | if ((range_beginning & mask) == mask) | |
14443 | { | |
28d2bfb9 AB |
14444 | /* If we found the largest possible address, then we already |
14445 | have the base address in range_end. */ | |
14446 | base = range_end; | |
43039443 JK |
14447 | found_base = 1; |
14448 | continue; | |
14449 | } | |
14450 | ||
14451 | if (!found_base) | |
14452 | { | |
14453 | /* We have no valid base address for the ranges | |
14454 | data. */ | |
14455 | complaint (&symfile_complaints, | |
14456 | _("Invalid .debug_ranges data (no base address)")); | |
14457 | return 0; | |
14458 | } | |
14459 | ||
9277c30c UW |
14460 | if (range_beginning > range_end) |
14461 | { | |
14462 | /* Inverted range entries are invalid. */ | |
14463 | complaint (&symfile_complaints, | |
14464 | _("Invalid .debug_ranges data (inverted range)")); | |
14465 | return 0; | |
14466 | } | |
14467 | ||
14468 | /* Empty range entries have no effect. */ | |
14469 | if (range_beginning == range_end) | |
14470 | continue; | |
14471 | ||
43039443 JK |
14472 | range_beginning += base; |
14473 | range_end += base; | |
14474 | ||
01093045 DE |
14475 | /* A not-uncommon case of bad debug info. |
14476 | Don't pollute the addrmap with bad data. */ | |
14477 | if (range_beginning + baseaddr == 0 | |
14478 | && !dwarf2_per_objfile->has_section_at_zero) | |
14479 | { | |
14480 | complaint (&symfile_complaints, | |
14481 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 14482 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14483 | continue; |
14484 | } | |
14485 | ||
5f46c5a5 JK |
14486 | callback (range_beginning, range_end); |
14487 | } | |
14488 | ||
14489 | return 1; | |
14490 | } | |
14491 | ||
14492 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14493 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14494 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14495 | ||
14496 | static int | |
14497 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14498 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
14499 | struct partial_symtab *ranges_pst) | |
14500 | { | |
518817b3 | 14501 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 JK |
14502 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
14503 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
14504 | SECT_OFF_TEXT (objfile)); | |
14505 | int low_set = 0; | |
14506 | CORE_ADDR low = 0; | |
14507 | CORE_ADDR high = 0; | |
14508 | int retval; | |
14509 | ||
14510 | retval = dwarf2_ranges_process (offset, cu, | |
14511 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14512 | { | |
9277c30c | 14513 | if (ranges_pst != NULL) |
3e29f34a MR |
14514 | { |
14515 | CORE_ADDR lowpc; | |
14516 | CORE_ADDR highpc; | |
14517 | ||
14518 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
14519 | range_beginning + baseaddr); | |
14520 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
14521 | range_end + baseaddr); | |
14522 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
14523 | ranges_pst); | |
14524 | } | |
ff013f42 | 14525 | |
43039443 JK |
14526 | /* FIXME: This is recording everything as a low-high |
14527 | segment of consecutive addresses. We should have a | |
14528 | data structure for discontiguous block ranges | |
14529 | instead. */ | |
14530 | if (! low_set) | |
14531 | { | |
14532 | low = range_beginning; | |
14533 | high = range_end; | |
14534 | low_set = 1; | |
14535 | } | |
14536 | else | |
14537 | { | |
14538 | if (range_beginning < low) | |
14539 | low = range_beginning; | |
14540 | if (range_end > high) | |
14541 | high = range_end; | |
14542 | } | |
5f46c5a5 JK |
14543 | }); |
14544 | if (!retval) | |
14545 | return 0; | |
43039443 JK |
14546 | |
14547 | if (! low_set) | |
14548 | /* If the first entry is an end-of-list marker, the range | |
14549 | describes an empty scope, i.e. no instructions. */ | |
14550 | return 0; | |
14551 | ||
14552 | if (low_return) | |
14553 | *low_return = low; | |
14554 | if (high_return) | |
14555 | *high_return = high; | |
14556 | return 1; | |
14557 | } | |
14558 | ||
3a2b436a JK |
14559 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14560 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14561 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14562 | |
3a2b436a | 14563 | static enum pc_bounds_kind |
af34e669 | 14564 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
14565 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
14566 | struct partial_symtab *pst) | |
c906108c | 14567 | { |
518817b3 SM |
14568 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14569 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14570 | struct attribute *attr; |
91da1414 | 14571 | struct attribute *attr_high; |
af34e669 DJ |
14572 | CORE_ADDR low = 0; |
14573 | CORE_ADDR high = 0; | |
e385593e | 14574 | enum pc_bounds_kind ret; |
c906108c | 14575 | |
91da1414 MW |
14576 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14577 | if (attr_high) | |
af34e669 | 14578 | { |
e142c38c | 14579 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 14580 | if (attr) |
91da1414 | 14581 | { |
31aa7e4e JB |
14582 | low = attr_value_as_address (attr); |
14583 | high = attr_value_as_address (attr_high); | |
14584 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14585 | high += low; | |
91da1414 | 14586 | } |
af34e669 DJ |
14587 | else |
14588 | /* Found high w/o low attribute. */ | |
e385593e | 14589 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14590 | |
14591 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14592 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14593 | } |
c906108c | 14594 | else |
af34e669 | 14595 | { |
e142c38c | 14596 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14597 | if (attr != NULL) |
14598 | { | |
ab435259 DE |
14599 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14600 | We take advantage of the fact that DW_AT_ranges does not appear | |
14601 | in DW_TAG_compile_unit of DWO files. */ | |
14602 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14603 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14604 | + (need_ranges_base | |
14605 | ? cu->ranges_base | |
14606 | : 0)); | |
2e3cf129 | 14607 | |
af34e669 | 14608 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14609 | .debug_ranges section. */ |
2e3cf129 | 14610 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14611 | return PC_BOUNDS_INVALID; |
43039443 | 14612 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14613 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14614 | } |
e385593e JK |
14615 | else |
14616 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14617 | } |
c906108c | 14618 | |
48fbe735 | 14619 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14620 | if (high <= low) |
e385593e | 14621 | return PC_BOUNDS_INVALID; |
c906108c SS |
14622 | |
14623 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14624 | eliminate duplicate copies of functions and vtables and such. | |
14625 | The linker will arbitrarily choose one and discard the others. | |
14626 | The AT_*_pc values for such functions refer to local labels in | |
14627 | these sections. If the section from that file was discarded, the | |
14628 | labels are not in the output, so the relocs get a value of 0. | |
14629 | If this is a discarded function, mark the pc bounds as invalid, | |
14630 | so that GDB will ignore it. */ | |
72dca2f5 | 14631 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14632 | return PC_BOUNDS_INVALID; |
c906108c SS |
14633 | |
14634 | *lowpc = low; | |
96408a79 SA |
14635 | if (highpc) |
14636 | *highpc = high; | |
af34e669 | 14637 | return ret; |
c906108c SS |
14638 | } |
14639 | ||
b084d499 JB |
14640 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14641 | its low and high PC addresses. Do nothing if these addresses could not | |
14642 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14643 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14644 | ||
14645 | static void | |
14646 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14647 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14648 | struct dwarf2_cu *cu) | |
14649 | { | |
14650 | CORE_ADDR low, high; | |
14651 | struct die_info *child = die->child; | |
14652 | ||
e385593e | 14653 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14654 | { |
325fac50 PA |
14655 | *lowpc = std::min (*lowpc, low); |
14656 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14657 | } |
14658 | ||
14659 | /* If the language does not allow nested subprograms (either inside | |
14660 | subprograms or lexical blocks), we're done. */ | |
14661 | if (cu->language != language_ada) | |
14662 | return; | |
6e70227d | 14663 | |
b084d499 JB |
14664 | /* Check all the children of the given DIE. If it contains nested |
14665 | subprograms, then check their pc bounds. Likewise, we need to | |
14666 | check lexical blocks as well, as they may also contain subprogram | |
14667 | definitions. */ | |
14668 | while (child && child->tag) | |
14669 | { | |
14670 | if (child->tag == DW_TAG_subprogram | |
14671 | || child->tag == DW_TAG_lexical_block) | |
14672 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14673 | child = sibling_die (child); | |
14674 | } | |
14675 | } | |
14676 | ||
fae299cd DC |
14677 | /* Get the low and high pc's represented by the scope DIE, and store |
14678 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14679 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14680 | ||
14681 | static void | |
14682 | get_scope_pc_bounds (struct die_info *die, | |
14683 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14684 | struct dwarf2_cu *cu) | |
14685 | { | |
14686 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14687 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14688 | CORE_ADDR current_low, current_high; | |
14689 | ||
3a2b436a | 14690 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14691 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14692 | { |
14693 | best_low = current_low; | |
14694 | best_high = current_high; | |
14695 | } | |
14696 | else | |
14697 | { | |
14698 | struct die_info *child = die->child; | |
14699 | ||
14700 | while (child && child->tag) | |
14701 | { | |
14702 | switch (child->tag) { | |
14703 | case DW_TAG_subprogram: | |
b084d499 | 14704 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14705 | break; |
14706 | case DW_TAG_namespace: | |
f55ee35c | 14707 | case DW_TAG_module: |
fae299cd DC |
14708 | /* FIXME: carlton/2004-01-16: Should we do this for |
14709 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14710 | that current GCC's always emit the DIEs corresponding | |
14711 | to definitions of methods of classes as children of a | |
14712 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14713 | the DIEs giving the declarations, which could be | |
14714 | anywhere). But I don't see any reason why the | |
14715 | standards says that they have to be there. */ | |
14716 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14717 | ||
14718 | if (current_low != ((CORE_ADDR) -1)) | |
14719 | { | |
325fac50 PA |
14720 | best_low = std::min (best_low, current_low); |
14721 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14722 | } |
14723 | break; | |
14724 | default: | |
0963b4bd | 14725 | /* Ignore. */ |
fae299cd DC |
14726 | break; |
14727 | } | |
14728 | ||
14729 | child = sibling_die (child); | |
14730 | } | |
14731 | } | |
14732 | ||
14733 | *lowpc = best_low; | |
14734 | *highpc = best_high; | |
14735 | } | |
14736 | ||
801e3a5b JB |
14737 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14738 | in DIE. */ | |
380bca97 | 14739 | |
801e3a5b JB |
14740 | static void |
14741 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14742 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14743 | { | |
518817b3 | 14744 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14745 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14746 | struct attribute *attr; |
91da1414 | 14747 | struct attribute *attr_high; |
801e3a5b | 14748 | |
91da1414 MW |
14749 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14750 | if (attr_high) | |
801e3a5b | 14751 | { |
801e3a5b JB |
14752 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
14753 | if (attr) | |
14754 | { | |
31aa7e4e JB |
14755 | CORE_ADDR low = attr_value_as_address (attr); |
14756 | CORE_ADDR high = attr_value_as_address (attr_high); | |
14757 | ||
14758 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14759 | high += low; | |
9a619af0 | 14760 | |
3e29f34a MR |
14761 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14762 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
14763 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
14764 | } |
14765 | } | |
14766 | ||
14767 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
14768 | if (attr) | |
14769 | { | |
ab435259 DE |
14770 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14771 | We take advantage of the fact that DW_AT_ranges does not appear | |
14772 | in DW_TAG_compile_unit of DWO files. */ | |
14773 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14774 | |
14775 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14776 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14777 | unsigned long offset = (DW_UNSND (attr) |
14778 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14779 | |
5f46c5a5 JK |
14780 | dwarf2_ranges_process (offset, cu, |
14781 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14782 | { | |
58fdfd2c JK |
14783 | start += baseaddr; |
14784 | end += baseaddr; | |
5f46c5a5 JK |
14785 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14786 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
14787 | record_block_range (block, start, end - 1); | |
14788 | }); | |
801e3a5b JB |
14789 | } |
14790 | } | |
14791 | ||
685b1105 JK |
14792 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14793 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14794 | |
685b1105 JK |
14795 | static void |
14796 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14797 | { |
38360086 | 14798 | int major, minor; |
60d5a603 JK |
14799 | |
14800 | if (cu->producer == NULL) | |
14801 | { | |
14802 | /* For unknown compilers expect their behavior is DWARF version | |
14803 | compliant. | |
14804 | ||
14805 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14806 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14807 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14808 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14809 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14810 | } |
b1ffba5a | 14811 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14812 | { |
38360086 MW |
14813 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14814 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14815 | } |
5230b05a WT |
14816 | else if (producer_is_icc (cu->producer, &major, &minor)) |
14817 | cu->producer_is_icc_lt_14 = major < 14; | |
685b1105 JK |
14818 | else |
14819 | { | |
14820 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14821 | compliant. */ | |
60d5a603 JK |
14822 | } |
14823 | ||
ba919b58 | 14824 | cu->checked_producer = 1; |
685b1105 | 14825 | } |
ba919b58 | 14826 | |
685b1105 JK |
14827 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14828 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14829 | during 4.6.0 experimental. */ | |
14830 | ||
14831 | static int | |
14832 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
14833 | { | |
14834 | if (!cu->checked_producer) | |
14835 | check_producer (cu); | |
14836 | ||
14837 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14838 | } |
14839 | ||
14840 | /* Return the default accessibility type if it is not overriden by | |
14841 | DW_AT_accessibility. */ | |
14842 | ||
14843 | static enum dwarf_access_attribute | |
14844 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14845 | { | |
14846 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14847 | { | |
14848 | /* The default DWARF 2 accessibility for members is public, the default | |
14849 | accessibility for inheritance is private. */ | |
14850 | ||
14851 | if (die->tag != DW_TAG_inheritance) | |
14852 | return DW_ACCESS_public; | |
14853 | else | |
14854 | return DW_ACCESS_private; | |
14855 | } | |
14856 | else | |
14857 | { | |
14858 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14859 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14860 | depends on the container kind. */ | |
14861 | ||
14862 | if (die->parent->tag == DW_TAG_class_type) | |
14863 | return DW_ACCESS_private; | |
14864 | else | |
14865 | return DW_ACCESS_public; | |
14866 | } | |
14867 | } | |
14868 | ||
74ac6d43 TT |
14869 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14870 | offset. If the attribute was not found return 0, otherwise return | |
14871 | 1. If it was found but could not properly be handled, set *OFFSET | |
14872 | to 0. */ | |
14873 | ||
14874 | static int | |
14875 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14876 | LONGEST *offset) | |
14877 | { | |
14878 | struct attribute *attr; | |
14879 | ||
14880 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14881 | if (attr != NULL) | |
14882 | { | |
14883 | *offset = 0; | |
14884 | ||
14885 | /* Note that we do not check for a section offset first here. | |
14886 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14887 | so if we see it, we can assume that a constant form is really | |
14888 | a constant and not a section offset. */ | |
14889 | if (attr_form_is_constant (attr)) | |
14890 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
14891 | else if (attr_form_is_section_offset (attr)) | |
14892 | dwarf2_complex_location_expr_complaint (); | |
14893 | else if (attr_form_is_block (attr)) | |
14894 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
14895 | else | |
14896 | dwarf2_complex_location_expr_complaint (); | |
14897 | ||
14898 | return 1; | |
14899 | } | |
14900 | ||
14901 | return 0; | |
14902 | } | |
14903 | ||
c906108c SS |
14904 | /* Add an aggregate field to the field list. */ |
14905 | ||
14906 | static void | |
107d2387 | 14907 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14908 | struct dwarf2_cu *cu) |
6e70227d | 14909 | { |
518817b3 | 14910 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 14911 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14912 | struct nextfield *new_field; |
14913 | struct attribute *attr; | |
14914 | struct field *fp; | |
15d034d0 | 14915 | const char *fieldname = ""; |
c906108c | 14916 | |
7d0ccb61 DJ |
14917 | if (die->tag == DW_TAG_inheritance) |
14918 | { | |
be2daae6 TT |
14919 | fip->baseclasses.emplace_back (); |
14920 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14921 | } |
14922 | else | |
14923 | { | |
be2daae6 TT |
14924 | fip->fields.emplace_back (); |
14925 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14926 | } |
be2daae6 | 14927 | |
c906108c SS |
14928 | fip->nfields++; |
14929 | ||
e142c38c | 14930 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
14931 | if (attr) |
14932 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
14933 | else |
14934 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14935 | if (new_field->accessibility != DW_ACCESS_public) |
14936 | fip->non_public_fields = 1; | |
60d5a603 | 14937 | |
e142c38c | 14938 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
14939 | if (attr) |
14940 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
14941 | else |
14942 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14943 | |
14944 | fp = &new_field->field; | |
a9a9bd0f | 14945 | |
e142c38c | 14946 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14947 | { |
74ac6d43 TT |
14948 | LONGEST offset; |
14949 | ||
a9a9bd0f | 14950 | /* Data member other than a C++ static data member. */ |
6e70227d | 14951 | |
c906108c | 14952 | /* Get type of field. */ |
e7c27a73 | 14953 | fp->type = die_type (die, cu); |
c906108c | 14954 | |
d6a843b5 | 14955 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14956 | |
c906108c | 14957 | /* Get bit size of field (zero if none). */ |
e142c38c | 14958 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
14959 | if (attr) |
14960 | { | |
14961 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14962 | } | |
14963 | else | |
14964 | { | |
14965 | FIELD_BITSIZE (*fp) = 0; | |
14966 | } | |
14967 | ||
14968 | /* Get bit offset of field. */ | |
74ac6d43 TT |
14969 | if (handle_data_member_location (die, cu, &offset)) |
14970 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 14971 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
14972 | if (attr) |
14973 | { | |
5e2b427d | 14974 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
14975 | { |
14976 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14977 | additional bit offset from the MSB of the containing |
14978 | anonymous object to the MSB of the field. We don't | |
14979 | have to do anything special since we don't need to | |
14980 | know the size of the anonymous object. */ | |
f41f5e61 | 14981 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14982 | } |
14983 | else | |
14984 | { | |
14985 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14986 | MSB of the anonymous object, subtract off the number of |
14987 | bits from the MSB of the field to the MSB of the | |
14988 | object, and then subtract off the number of bits of | |
14989 | the field itself. The result is the bit offset of | |
14990 | the LSB of the field. */ | |
c906108c SS |
14991 | int anonymous_size; |
14992 | int bit_offset = DW_UNSND (attr); | |
14993 | ||
e142c38c | 14994 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14995 | if (attr) |
14996 | { | |
14997 | /* The size of the anonymous object containing | |
14998 | the bit field is explicit, so use the | |
14999 | indicated size (in bytes). */ | |
15000 | anonymous_size = DW_UNSND (attr); | |
15001 | } | |
15002 | else | |
15003 | { | |
15004 | /* The size of the anonymous object containing | |
15005 | the bit field must be inferred from the type | |
15006 | attribute of the data member containing the | |
15007 | bit field. */ | |
15008 | anonymous_size = TYPE_LENGTH (fp->type); | |
15009 | } | |
f41f5e61 PA |
15010 | SET_FIELD_BITPOS (*fp, |
15011 | (FIELD_BITPOS (*fp) | |
15012 | + anonymous_size * bits_per_byte | |
15013 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15014 | } |
15015 | } | |
da5b30da AA |
15016 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15017 | if (attr != NULL) | |
15018 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15019 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15020 | |
15021 | /* Get name of field. */ | |
39cbfefa DJ |
15022 | fieldname = dwarf2_name (die, cu); |
15023 | if (fieldname == NULL) | |
15024 | fieldname = ""; | |
d8151005 DJ |
15025 | |
15026 | /* The name is already allocated along with this objfile, so we don't | |
15027 | need to duplicate it for the type. */ | |
15028 | fp->name = fieldname; | |
c906108c SS |
15029 | |
15030 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15031 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15032 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15033 | { |
d48cc9dd | 15034 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15035 | new_field->accessibility = DW_ACCESS_private; |
15036 | fip->non_public_fields = 1; | |
15037 | } | |
15038 | } | |
a9a9bd0f | 15039 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15040 | { |
a9a9bd0f DC |
15041 | /* C++ static member. */ |
15042 | ||
15043 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15044 | is a declaration, but all versions of G++ as of this writing | |
15045 | (so through at least 3.2.1) incorrectly generate | |
15046 | DW_TAG_variable tags. */ | |
6e70227d | 15047 | |
ff355380 | 15048 | const char *physname; |
c906108c | 15049 | |
a9a9bd0f | 15050 | /* Get name of field. */ |
39cbfefa DJ |
15051 | fieldname = dwarf2_name (die, cu); |
15052 | if (fieldname == NULL) | |
c906108c SS |
15053 | return; |
15054 | ||
254e6b9e | 15055 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15056 | if (attr |
15057 | /* Only create a symbol if this is an external value. | |
15058 | new_symbol checks this and puts the value in the global symbol | |
15059 | table, which we want. If it is not external, new_symbol | |
15060 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15061 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15062 | { |
15063 | /* A static const member, not much different than an enum as far as | |
15064 | we're concerned, except that we can support more types. */ | |
15065 | new_symbol (die, NULL, cu); | |
15066 | } | |
15067 | ||
2df3850c | 15068 | /* Get physical name. */ |
ff355380 | 15069 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15070 | |
d8151005 DJ |
15071 | /* The name is already allocated along with this objfile, so we don't |
15072 | need to duplicate it for the type. */ | |
15073 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15074 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15075 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15076 | } |
15077 | else if (die->tag == DW_TAG_inheritance) | |
15078 | { | |
74ac6d43 | 15079 | LONGEST offset; |
d4b96c9a | 15080 | |
74ac6d43 TT |
15081 | /* C++ base class field. */ |
15082 | if (handle_data_member_location (die, cu, &offset)) | |
15083 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15084 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15085 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c | 15086 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
c906108c | 15087 | } |
2ddeaf8a TT |
15088 | else if (die->tag == DW_TAG_variant_part) |
15089 | { | |
15090 | /* process_structure_scope will treat this DIE as a union. */ | |
15091 | process_structure_scope (die, cu); | |
15092 | ||
15093 | /* The variant part is relative to the start of the enclosing | |
15094 | structure. */ | |
15095 | SET_FIELD_BITPOS (*fp, 0); | |
15096 | fp->type = get_die_type (die, cu); | |
15097 | fp->artificial = 1; | |
15098 | fp->name = "<<variant>>"; | |
15099 | } | |
15100 | else | |
15101 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15102 | } |
15103 | ||
883fd55a KS |
15104 | /* Can the type given by DIE define another type? */ |
15105 | ||
15106 | static bool | |
15107 | type_can_define_types (const struct die_info *die) | |
15108 | { | |
15109 | switch (die->tag) | |
15110 | { | |
15111 | case DW_TAG_typedef: | |
15112 | case DW_TAG_class_type: | |
15113 | case DW_TAG_structure_type: | |
15114 | case DW_TAG_union_type: | |
15115 | case DW_TAG_enumeration_type: | |
15116 | return true; | |
15117 | ||
15118 | default: | |
15119 | return false; | |
15120 | } | |
15121 | } | |
15122 | ||
15123 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15124 | |
15125 | static void | |
883fd55a KS |
15126 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15127 | struct dwarf2_cu *cu) | |
6e70227d | 15128 | { |
be2daae6 TT |
15129 | struct decl_field fp; |
15130 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15131 | |
883fd55a | 15132 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15133 | |
883fd55a | 15134 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15135 | fp.name = dwarf2_name (die, cu); |
15136 | fp.type = read_type_die (die, cu); | |
98751a41 | 15137 | |
c191a687 KS |
15138 | /* Save accessibility. */ |
15139 | enum dwarf_access_attribute accessibility; | |
15140 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15141 | if (attr != NULL) | |
15142 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15143 | else | |
15144 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15145 | switch (accessibility) | |
15146 | { | |
15147 | case DW_ACCESS_public: | |
15148 | /* The assumed value if neither private nor protected. */ | |
15149 | break; | |
15150 | case DW_ACCESS_private: | |
be2daae6 | 15151 | fp.is_private = 1; |
c191a687 KS |
15152 | break; |
15153 | case DW_ACCESS_protected: | |
be2daae6 | 15154 | fp.is_protected = 1; |
c191a687 KS |
15155 | break; |
15156 | default: | |
37534686 KS |
15157 | complaint (&symfile_complaints, |
15158 | _("Unhandled DW_AT_accessibility value (%x)"), accessibility); | |
c191a687 KS |
15159 | } |
15160 | ||
883fd55a | 15161 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15162 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15163 | else |
be2daae6 | 15164 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15165 | } |
15166 | ||
c906108c SS |
15167 | /* Create the vector of fields, and attach it to the type. */ |
15168 | ||
15169 | static void | |
fba45db2 | 15170 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15171 | struct dwarf2_cu *cu) |
c906108c SS |
15172 | { |
15173 | int nfields = fip->nfields; | |
15174 | ||
15175 | /* Record the field count, allocate space for the array of fields, | |
15176 | and create blank accessibility bitfields if necessary. */ | |
15177 | TYPE_NFIELDS (type) = nfields; | |
15178 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 15179 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 15180 | |
b4ba55a1 | 15181 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15182 | { |
15183 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15184 | ||
15185 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15186 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15187 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15188 | ||
15189 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15190 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15191 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15192 | ||
774b6a14 TT |
15193 | TYPE_FIELD_IGNORE_BITS (type) = |
15194 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15195 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15196 | } |
15197 | ||
15198 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15199 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15200 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15201 | { |
be2daae6 | 15202 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15203 | unsigned char *pointer; |
c906108c SS |
15204 | |
15205 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15206 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15207 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15208 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15209 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15210 | } |
15211 | ||
2ddeaf8a TT |
15212 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
15213 | { | |
15214 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
15215 | ||
be2daae6 | 15216 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 15217 | { |
be2daae6 TT |
15218 | struct nextfield &field = fip->fields[index]; |
15219 | ||
15220 | if (field.variant.is_discriminant) | |
2ddeaf8a | 15221 | di->discriminant_index = index; |
be2daae6 | 15222 | else if (field.variant.default_branch) |
2ddeaf8a TT |
15223 | di->default_index = index; |
15224 | else | |
be2daae6 | 15225 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
15226 | } |
15227 | } | |
15228 | ||
be2daae6 TT |
15229 | /* Copy the saved-up fields into the field vector. */ |
15230 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15231 | { |
be2daae6 TT |
15232 | struct nextfield &field |
15233 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15234 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15235 | |
be2daae6 TT |
15236 | TYPE_FIELD (type, i) = field.field; |
15237 | switch (field.accessibility) | |
c906108c | 15238 | { |
c5aa993b | 15239 | case DW_ACCESS_private: |
b4ba55a1 | 15240 | if (cu->language != language_ada) |
be2daae6 | 15241 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15242 | break; |
c906108c | 15243 | |
c5aa993b | 15244 | case DW_ACCESS_protected: |
b4ba55a1 | 15245 | if (cu->language != language_ada) |
be2daae6 | 15246 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15247 | break; |
c906108c | 15248 | |
c5aa993b JM |
15249 | case DW_ACCESS_public: |
15250 | break; | |
c906108c | 15251 | |
c5aa993b JM |
15252 | default: |
15253 | /* Unknown accessibility. Complain and treat it as public. */ | |
15254 | { | |
e2e0b3e5 | 15255 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
be2daae6 | 15256 | field.accessibility); |
c5aa993b JM |
15257 | } |
15258 | break; | |
c906108c | 15259 | } |
be2daae6 | 15260 | if (i < fip->baseclasses.size ()) |
c906108c | 15261 | { |
be2daae6 | 15262 | switch (field.virtuality) |
c906108c | 15263 | { |
c5aa993b JM |
15264 | case DW_VIRTUALITY_virtual: |
15265 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15266 | if (cu->language == language_ada) |
a73c6dcd | 15267 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15268 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15269 | break; |
c906108c SS |
15270 | } |
15271 | } | |
c906108c SS |
15272 | } |
15273 | } | |
15274 | ||
7d27a96d TT |
15275 | /* Return true if this member function is a constructor, false |
15276 | otherwise. */ | |
15277 | ||
15278 | static int | |
15279 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15280 | { | |
15281 | const char *fieldname; | |
fe978cb0 | 15282 | const char *type_name; |
7d27a96d TT |
15283 | int len; |
15284 | ||
15285 | if (die->parent == NULL) | |
15286 | return 0; | |
15287 | ||
15288 | if (die->parent->tag != DW_TAG_structure_type | |
15289 | && die->parent->tag != DW_TAG_union_type | |
15290 | && die->parent->tag != DW_TAG_class_type) | |
15291 | return 0; | |
15292 | ||
15293 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15294 | type_name = dwarf2_name (die->parent, cu); |
15295 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15296 | return 0; |
15297 | ||
15298 | len = strlen (fieldname); | |
fe978cb0 PA |
15299 | return (strncmp (fieldname, type_name, len) == 0 |
15300 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15301 | } |
15302 | ||
c906108c SS |
15303 | /* Add a member function to the proper fieldlist. */ |
15304 | ||
15305 | static void | |
107d2387 | 15306 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15307 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15308 | { |
518817b3 | 15309 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15310 | struct attribute *attr; |
c906108c | 15311 | int i; |
be2daae6 | 15312 | struct fnfieldlist *flp = nullptr; |
c906108c | 15313 | struct fn_field *fnp; |
15d034d0 | 15314 | const char *fieldname; |
f792889a | 15315 | struct type *this_type; |
60d5a603 | 15316 | enum dwarf_access_attribute accessibility; |
c906108c | 15317 | |
b4ba55a1 | 15318 | if (cu->language == language_ada) |
a73c6dcd | 15319 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15320 | |
2df3850c | 15321 | /* Get name of member function. */ |
39cbfefa DJ |
15322 | fieldname = dwarf2_name (die, cu); |
15323 | if (fieldname == NULL) | |
2df3850c | 15324 | return; |
c906108c | 15325 | |
c906108c | 15326 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15327 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15328 | { |
27bfe10e | 15329 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15330 | { |
15331 | flp = &fip->fnfieldlists[i]; | |
15332 | break; | |
15333 | } | |
c906108c SS |
15334 | } |
15335 | ||
be2daae6 TT |
15336 | /* Create a new fnfieldlist if necessary. */ |
15337 | if (flp == nullptr) | |
c906108c | 15338 | { |
be2daae6 TT |
15339 | fip->fnfieldlists.emplace_back (); |
15340 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15341 | flp->name = fieldname; |
be2daae6 | 15342 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15343 | } |
15344 | ||
be2daae6 TT |
15345 | /* Create a new member function field and add it to the vector of |
15346 | fnfieldlists. */ | |
15347 | flp->fnfields.emplace_back (); | |
15348 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15349 | |
15350 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15351 | if (cu->language == language_cplus) |
be2daae6 TT |
15352 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15353 | die, cu); | |
3da10d80 KS |
15354 | else |
15355 | { | |
1d06ead6 | 15356 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15357 | fnp->physname = physname ? physname : ""; |
15358 | } | |
15359 | ||
c906108c | 15360 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15361 | this_type = read_type_die (die, cu); |
15362 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15363 | { |
f792889a | 15364 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15365 | |
f792889a | 15366 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15367 | of the method itself (TYPE_CODE_METHOD). */ |
15368 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15369 | TYPE_TARGET_TYPE (this_type), |
15370 | TYPE_FIELDS (this_type), | |
15371 | TYPE_NFIELDS (this_type), | |
15372 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15373 | |
15374 | /* Handle static member functions. | |
c5aa993b | 15375 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15376 | member functions. G++ helps GDB by marking the first |
15377 | parameter for non-static member functions (which is the this | |
15378 | pointer) as artificial. We obtain this information from | |
15379 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15380 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15381 | fnp->voffset = VOFFSET_STATIC; |
15382 | } | |
15383 | else | |
e2e0b3e5 | 15384 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 15385 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15386 | |
15387 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15388 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15389 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15390 | |
3e43a32a MS |
15391 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15392 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15393 | |
15394 | /* Get accessibility. */ | |
e142c38c | 15395 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 15396 | if (attr) |
aead7601 | 15397 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15398 | else |
15399 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15400 | switch (accessibility) | |
c906108c | 15401 | { |
60d5a603 JK |
15402 | case DW_ACCESS_private: |
15403 | fnp->is_private = 1; | |
15404 | break; | |
15405 | case DW_ACCESS_protected: | |
15406 | fnp->is_protected = 1; | |
15407 | break; | |
c906108c SS |
15408 | } |
15409 | ||
b02dede2 | 15410 | /* Check for artificial methods. */ |
e142c38c | 15411 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15412 | if (attr && DW_UNSND (attr) != 0) |
15413 | fnp->is_artificial = 1; | |
15414 | ||
7d27a96d TT |
15415 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15416 | ||
0d564a31 | 15417 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15418 | function. For older versions of GCC, this is an offset in the |
15419 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15420 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15421 | to the object address. */ |
15422 | ||
e142c38c | 15423 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 15424 | if (attr) |
8e19ed76 | 15425 | { |
aec5aa8b | 15426 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15427 | { |
aec5aa8b TT |
15428 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15429 | { | |
15430 | /* Old-style GCC. */ | |
15431 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15432 | } | |
15433 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15434 | || (DW_BLOCK (attr)->size > 1 | |
15435 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15436 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15437 | { | |
aec5aa8b TT |
15438 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15439 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15440 | dwarf2_complex_location_expr_complaint (); | |
15441 | else | |
15442 | fnp->voffset /= cu->header.addr_size; | |
15443 | fnp->voffset += 2; | |
15444 | } | |
15445 | else | |
15446 | dwarf2_complex_location_expr_complaint (); | |
15447 | ||
15448 | if (!fnp->fcontext) | |
7e993ebf KS |
15449 | { |
15450 | /* If there is no `this' field and no DW_AT_containing_type, | |
15451 | we cannot actually find a base class context for the | |
15452 | vtable! */ | |
15453 | if (TYPE_NFIELDS (this_type) == 0 | |
15454 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15455 | { | |
15456 | complaint (&symfile_complaints, | |
15457 | _("cannot determine context for virtual member " | |
9d8780f0 SM |
15458 | "function \"%s\" (offset %s)"), |
15459 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15460 | } |
15461 | else | |
15462 | { | |
15463 | fnp->fcontext | |
15464 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15465 | } | |
15466 | } | |
aec5aa8b | 15467 | } |
3690dd37 | 15468 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 15469 | { |
4d3c2250 | 15470 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15471 | } |
15472 | else | |
15473 | { | |
4d3c2250 KB |
15474 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15475 | fieldname); | |
8e19ed76 | 15476 | } |
0d564a31 | 15477 | } |
d48cc9dd DJ |
15478 | else |
15479 | { | |
15480 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15481 | if (attr && DW_UNSND (attr)) | |
15482 | { | |
15483 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
15484 | complaint (&symfile_complaints, | |
9d8780f0 | 15485 | _("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15486 | "but the vtable offset is not specified"), |
9d8780f0 | 15487 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15488 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15489 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15490 | } | |
15491 | } | |
c906108c SS |
15492 | } |
15493 | ||
15494 | /* Create the vector of member function fields, and attach it to the type. */ | |
15495 | ||
15496 | static void | |
fba45db2 | 15497 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15498 | struct dwarf2_cu *cu) |
c906108c | 15499 | { |
b4ba55a1 | 15500 | if (cu->language == language_ada) |
a73c6dcd | 15501 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15502 | |
c906108c SS |
15503 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15504 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15505 | TYPE_ALLOC (type, |
15506 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15507 | |
be2daae6 | 15508 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15509 | { |
be2daae6 | 15510 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15511 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15512 | |
be2daae6 TT |
15513 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15514 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15515 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15516 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15517 | ||
15518 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15519 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15520 | } |
15521 | ||
be2daae6 | 15522 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15523 | } |
15524 | ||
1168df01 JB |
15525 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15526 | language, zero otherwise. */ | |
15527 | static int | |
15528 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15529 | { | |
15530 | static const char vptr[] = "_vptr"; | |
15531 | ||
9c37b5ae TT |
15532 | /* Look for the C++ form of the vtable. */ |
15533 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15534 | return 1; |
15535 | ||
15536 | return 0; | |
15537 | } | |
15538 | ||
c0dd20ea | 15539 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15540 | functions, with the ABI-specified layout. If TYPE describes |
15541 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15542 | |
15543 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15544 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15545 | |
0b92b5bb TT |
15546 | static void |
15547 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15548 | { |
09e2d7c7 | 15549 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15550 | |
15551 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15552 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15553 | return; | |
c0dd20ea DJ |
15554 | |
15555 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15556 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15557 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15558 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15559 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15560 | return; | |
c0dd20ea DJ |
15561 | |
15562 | /* Find the type of the method. */ | |
0b92b5bb | 15563 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15564 | if (pfn_type == NULL |
15565 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15566 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15567 | return; |
c0dd20ea DJ |
15568 | |
15569 | /* Look for the "this" argument. */ | |
15570 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15571 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15572 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15573 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15574 | return; |
c0dd20ea | 15575 | |
09e2d7c7 | 15576 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15577 | new_type = alloc_type (objfile); |
09e2d7c7 | 15578 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15579 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15580 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15581 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15582 | } |
1168df01 | 15583 | |
2b4424c3 TT |
15584 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15585 | appropriate error checking and issuing complaints if there is a | |
15586 | problem. */ | |
15587 | ||
15588 | static ULONGEST | |
15589 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15590 | { | |
15591 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15592 | ||
15593 | if (attr == nullptr) | |
15594 | return 0; | |
15595 | ||
15596 | if (!attr_form_is_constant (attr)) | |
15597 | { | |
15598 | complaint (&symfile_complaints, | |
15599 | _("DW_AT_alignment must have constant form" | |
15600 | " - DIE at %s [in module %s]"), | |
15601 | sect_offset_str (die->sect_off), | |
15602 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15603 | return 0; | |
15604 | } | |
15605 | ||
15606 | ULONGEST align; | |
15607 | if (attr->form == DW_FORM_sdata) | |
15608 | { | |
15609 | LONGEST val = DW_SND (attr); | |
15610 | if (val < 0) | |
15611 | { | |
15612 | complaint (&symfile_complaints, | |
15613 | _("DW_AT_alignment value must not be negative" | |
15614 | " - DIE at %s [in module %s]"), | |
15615 | sect_offset_str (die->sect_off), | |
15616 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15617 | return 0; | |
15618 | } | |
15619 | align = val; | |
15620 | } | |
15621 | else | |
15622 | align = DW_UNSND (attr); | |
15623 | ||
15624 | if (align == 0) | |
15625 | { | |
15626 | complaint (&symfile_complaints, | |
15627 | _("DW_AT_alignment value must not be zero" | |
15628 | " - DIE at %s [in module %s]"), | |
15629 | sect_offset_str (die->sect_off), | |
15630 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15631 | return 0; | |
15632 | } | |
15633 | if ((align & (align - 1)) != 0) | |
15634 | { | |
15635 | complaint (&symfile_complaints, | |
15636 | _("DW_AT_alignment value must be a power of 2" | |
15637 | " - DIE at %s [in module %s]"), | |
15638 | sect_offset_str (die->sect_off), | |
15639 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15640 | return 0; | |
15641 | } | |
15642 | ||
15643 | return align; | |
15644 | } | |
15645 | ||
15646 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15647 | the alignment for TYPE. */ | |
15648 | ||
15649 | static void | |
15650 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15651 | struct type *type) | |
15652 | { | |
15653 | if (!set_type_align (type, get_alignment (cu, die))) | |
15654 | complaint (&symfile_complaints, | |
15655 | _("DW_AT_alignment value too large" | |
15656 | " - DIE at %s [in module %s]"), | |
15657 | sect_offset_str (die->sect_off), | |
15658 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15659 | } | |
685b1105 | 15660 | |
c906108c | 15661 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15662 | (definition) to create a type for the structure or union. Fill in |
15663 | the type's name and general properties; the members will not be | |
83655187 DE |
15664 | processed until process_structure_scope. A symbol table entry for |
15665 | the type will also not be done until process_structure_scope (assuming | |
15666 | the type has a name). | |
c906108c | 15667 | |
c767944b DJ |
15668 | NOTE: we need to call these functions regardless of whether or not the |
15669 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15670 | structure or union. This gets the type entered into our set of |
83655187 | 15671 | user defined types. */ |
c906108c | 15672 | |
f792889a | 15673 | static struct type * |
134d01f1 | 15674 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15675 | { |
518817b3 | 15676 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15677 | struct type *type; |
15678 | struct attribute *attr; | |
15d034d0 | 15679 | const char *name; |
c906108c | 15680 | |
348e048f DE |
15681 | /* If the definition of this type lives in .debug_types, read that type. |
15682 | Don't follow DW_AT_specification though, that will take us back up | |
15683 | the chain and we want to go down. */ | |
45e58e77 | 15684 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
15685 | if (attr) |
15686 | { | |
ac9ec31b | 15687 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15688 | |
ac9ec31b | 15689 | /* The type's CU may not be the same as CU. |
02142a6c | 15690 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15691 | return set_die_type (die, type, cu); |
15692 | } | |
15693 | ||
c0dd20ea | 15694 | type = alloc_type (objfile); |
c906108c | 15695 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15696 | |
39cbfefa DJ |
15697 | name = dwarf2_name (die, cu); |
15698 | if (name != NULL) | |
c906108c | 15699 | { |
987504bb | 15700 | if (cu->language == language_cplus |
c44af4eb TT |
15701 | || cu->language == language_d |
15702 | || cu->language == language_rust) | |
63d06c5c | 15703 | { |
15d034d0 | 15704 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15705 | |
15706 | /* dwarf2_full_name might have already finished building the DIE's | |
15707 | type. If so, there is no need to continue. */ | |
15708 | if (get_die_type (die, cu) != NULL) | |
15709 | return get_die_type (die, cu); | |
15710 | ||
15711 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
15712 | if (die->tag == DW_TAG_structure_type |
15713 | || die->tag == DW_TAG_class_type) | |
15714 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
15715 | } |
15716 | else | |
15717 | { | |
d8151005 DJ |
15718 | /* The name is already allocated along with this objfile, so |
15719 | we don't need to duplicate it for the type. */ | |
7d455152 | 15720 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
15721 | if (die->tag == DW_TAG_class_type) |
15722 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 15723 | } |
c906108c SS |
15724 | } |
15725 | ||
15726 | if (die->tag == DW_TAG_structure_type) | |
15727 | { | |
15728 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15729 | } | |
15730 | else if (die->tag == DW_TAG_union_type) | |
15731 | { | |
15732 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15733 | } | |
2ddeaf8a TT |
15734 | else if (die->tag == DW_TAG_variant_part) |
15735 | { | |
15736 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15737 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15738 | } | |
c906108c SS |
15739 | else |
15740 | { | |
4753d33b | 15741 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15742 | } |
15743 | ||
0cc2414c TT |
15744 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15745 | TYPE_DECLARED_CLASS (type) = 1; | |
15746 | ||
e142c38c | 15747 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15748 | if (attr) |
15749 | { | |
155bfbd3 JB |
15750 | if (attr_form_is_constant (attr)) |
15751 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15752 | else | |
15753 | { | |
15754 | /* For the moment, dynamic type sizes are not supported | |
15755 | by GDB's struct type. The actual size is determined | |
15756 | on-demand when resolving the type of a given object, | |
15757 | so set the type's length to zero for now. Otherwise, | |
15758 | we record an expression as the length, and that expression | |
15759 | could lead to a very large value, which could eventually | |
15760 | lead to us trying to allocate that much memory when creating | |
15761 | a value of that type. */ | |
15762 | TYPE_LENGTH (type) = 0; | |
15763 | } | |
c906108c SS |
15764 | } |
15765 | else | |
15766 | { | |
15767 | TYPE_LENGTH (type) = 0; | |
15768 | } | |
15769 | ||
2b4424c3 TT |
15770 | maybe_set_alignment (cu, die, type); |
15771 | ||
5230b05a | 15772 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15773 | { |
5230b05a WT |
15774 | /* ICC<14 does not output the required DW_AT_declaration on |
15775 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15776 | TYPE_STUB (type) = 1; |
685b1105 JK |
15777 | } |
15778 | else | |
15779 | TYPE_STUB_SUPPORTED (type) = 1; | |
15780 | ||
dc718098 | 15781 | if (die_is_declaration (die, cu)) |
876cecd0 | 15782 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15783 | else if (attr == NULL && die->child == NULL |
15784 | && producer_is_realview (cu->producer)) | |
15785 | /* RealView does not output the required DW_AT_declaration | |
15786 | on incomplete types. */ | |
15787 | TYPE_STUB (type) = 1; | |
dc718098 | 15788 | |
c906108c SS |
15789 | /* We need to add the type field to the die immediately so we don't |
15790 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15791 | type within the structure itself. */ |
1c379e20 | 15792 | set_die_type (die, type, cu); |
c906108c | 15793 | |
7e314c57 JK |
15794 | /* set_die_type should be already done. */ |
15795 | set_descriptive_type (type, die, cu); | |
15796 | ||
c767944b DJ |
15797 | return type; |
15798 | } | |
15799 | ||
2ddeaf8a TT |
15800 | /* A helper for process_structure_scope that handles a single member |
15801 | DIE. */ | |
15802 | ||
15803 | static void | |
15804 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15805 | struct field_info *fi, | |
15806 | std::vector<struct symbol *> *template_args, | |
15807 | struct dwarf2_cu *cu) | |
15808 | { | |
15809 | if (child_die->tag == DW_TAG_member | |
15810 | || child_die->tag == DW_TAG_variable | |
15811 | || child_die->tag == DW_TAG_variant_part) | |
15812 | { | |
15813 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15814 | should be a DW_TAG_member that is a declaration, but | |
15815 | all versions of G++ as of this writing (so through at | |
15816 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15817 | tags for them instead. */ | |
15818 | dwarf2_add_field (fi, child_die, cu); | |
15819 | } | |
15820 | else if (child_die->tag == DW_TAG_subprogram) | |
15821 | { | |
15822 | /* Rust doesn't have member functions in the C++ sense. | |
15823 | However, it does emit ordinary functions as children | |
15824 | of a struct DIE. */ | |
15825 | if (cu->language == language_rust) | |
15826 | read_func_scope (child_die, cu); | |
15827 | else | |
15828 | { | |
15829 | /* C++ member function. */ | |
15830 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15831 | } | |
15832 | } | |
15833 | else if (child_die->tag == DW_TAG_inheritance) | |
15834 | { | |
15835 | /* C++ base class field. */ | |
15836 | dwarf2_add_field (fi, child_die, cu); | |
15837 | } | |
15838 | else if (type_can_define_types (child_die)) | |
15839 | dwarf2_add_type_defn (fi, child_die, cu); | |
15840 | else if (child_die->tag == DW_TAG_template_type_param | |
15841 | || child_die->tag == DW_TAG_template_value_param) | |
15842 | { | |
15843 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15844 | ||
15845 | if (arg != NULL) | |
15846 | template_args->push_back (arg); | |
15847 | } | |
15848 | else if (child_die->tag == DW_TAG_variant) | |
15849 | { | |
15850 | /* In a variant we want to get the discriminant and also add a | |
15851 | field for our sole member child. */ | |
15852 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15853 | ||
15854 | for (struct die_info *variant_child = child_die->child; | |
15855 | variant_child != NULL; | |
15856 | variant_child = sibling_die (variant_child)) | |
15857 | { | |
15858 | if (variant_child->tag == DW_TAG_member) | |
15859 | { | |
15860 | handle_struct_member_die (variant_child, type, fi, | |
15861 | template_args, cu); | |
15862 | /* Only handle the one. */ | |
15863 | break; | |
15864 | } | |
15865 | } | |
15866 | ||
15867 | /* We don't handle this but we might as well report it if we see | |
15868 | it. */ | |
15869 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
15870 | complaint (&symfile_complaints, | |
15871 | _("DW_AT_discr_list is not supported yet" | |
15872 | " - DIE at %s [in module %s]"), | |
15873 | sect_offset_str (child_die->sect_off), | |
15874 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15875 | ||
15876 | /* The first field was just added, so we can stash the | |
15877 | discriminant there. */ | |
be2daae6 | 15878 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15879 | if (discr == NULL) |
be2daae6 | 15880 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15881 | else |
be2daae6 | 15882 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15883 | } |
15884 | } | |
15885 | ||
c767944b DJ |
15886 | /* Finish creating a structure or union type, including filling in |
15887 | its members and creating a symbol for it. */ | |
15888 | ||
15889 | static void | |
15890 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15891 | { | |
518817b3 | 15892 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15893 | struct die_info *child_die; |
c767944b DJ |
15894 | struct type *type; |
15895 | ||
15896 | type = get_die_type (die, cu); | |
15897 | if (type == NULL) | |
15898 | type = read_structure_type (die, cu); | |
15899 | ||
2ddeaf8a TT |
15900 | /* When reading a DW_TAG_variant_part, we need to notice when we |
15901 | read the discriminant member, so we can record it later in the | |
15902 | discriminant_info. */ | |
15903 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
15904 | sect_offset discr_offset; | |
15905 | ||
15906 | if (is_variant_part) | |
15907 | { | |
15908 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15909 | if (discr == NULL) | |
15910 | { | |
15911 | /* Maybe it's a univariant form, an extension we support. | |
15912 | In this case arrange not to check the offset. */ | |
15913 | is_variant_part = false; | |
15914 | } | |
15915 | else if (attr_form_is_ref (discr)) | |
15916 | { | |
15917 | struct dwarf2_cu *target_cu = cu; | |
15918 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15919 | ||
15920 | discr_offset = target_die->sect_off; | |
15921 | } | |
15922 | else | |
15923 | { | |
15924 | complaint (&symfile_complaints, | |
15925 | _("DW_AT_discr does not have DIE reference form" | |
15926 | " - DIE at %s [in module %s]"), | |
15927 | sect_offset_str (die->sect_off), | |
15928 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15929 | is_variant_part = false; | |
15930 | } | |
15931 | } | |
15932 | ||
e142c38c | 15933 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15934 | { |
15935 | struct field_info fi; | |
2f4732b0 | 15936 | std::vector<struct symbol *> template_args; |
c906108c | 15937 | |
639d11d3 | 15938 | child_die = die->child; |
c906108c SS |
15939 | |
15940 | while (child_die && child_die->tag) | |
15941 | { | |
2ddeaf8a | 15942 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 15943 | |
2ddeaf8a | 15944 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 15945 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 15946 | |
c906108c SS |
15947 | child_die = sibling_die (child_die); |
15948 | } | |
15949 | ||
34eaf542 | 15950 | /* Attach template arguments to type. */ |
2f4732b0 | 15951 | if (!template_args.empty ()) |
34eaf542 TT |
15952 | { |
15953 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2f4732b0 | 15954 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15955 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15956 | = XOBNEWVEC (&objfile->objfile_obstack, |
15957 | struct symbol *, | |
15958 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15959 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15960 | template_args.data (), |
34eaf542 TT |
15961 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15962 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15963 | } |
15964 | ||
c906108c SS |
15965 | /* Attach fields and member functions to the type. */ |
15966 | if (fi.nfields) | |
e7c27a73 | 15967 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15968 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15969 | { |
e7c27a73 | 15970 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15971 | |
c5aa993b | 15972 | /* Get the type which refers to the base class (possibly this |
c906108c | 15973 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15974 | class from the DW_AT_containing_type attribute. This use of |
15975 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15976 | |
e142c38c | 15977 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15978 | { |
e7c27a73 | 15979 | struct type *t = die_containing_type (die, cu); |
c906108c | 15980 | |
ae6ae975 | 15981 | set_type_vptr_basetype (type, t); |
c906108c SS |
15982 | if (type == t) |
15983 | { | |
c906108c SS |
15984 | int i; |
15985 | ||
15986 | /* Our own class provides vtbl ptr. */ | |
15987 | for (i = TYPE_NFIELDS (t) - 1; | |
15988 | i >= TYPE_N_BASECLASSES (t); | |
15989 | --i) | |
15990 | { | |
0d5cff50 | 15991 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15992 | |
1168df01 | 15993 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15994 | { |
ae6ae975 | 15995 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15996 | break; |
15997 | } | |
15998 | } | |
15999 | ||
16000 | /* Complain if virtual function table field not found. */ | |
16001 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 16002 | complaint (&symfile_complaints, |
3e43a32a MS |
16003 | _("virtual function table pointer " |
16004 | "not found when defining class '%s'"), | |
4d3c2250 KB |
16005 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
16006 | ""); | |
c906108c SS |
16007 | } |
16008 | else | |
16009 | { | |
ae6ae975 | 16010 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16011 | } |
16012 | } | |
f6235d4c | 16013 | else if (cu->producer |
61012eef | 16014 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16015 | { |
16016 | /* The IBM XLC compiler does not provide direct indication | |
16017 | of the containing type, but the vtable pointer is | |
16018 | always named __vfp. */ | |
16019 | ||
16020 | int i; | |
16021 | ||
16022 | for (i = TYPE_NFIELDS (type) - 1; | |
16023 | i >= TYPE_N_BASECLASSES (type); | |
16024 | --i) | |
16025 | { | |
16026 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16027 | { | |
ae6ae975 DE |
16028 | set_type_vptr_fieldno (type, i); |
16029 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16030 | break; |
16031 | } | |
16032 | } | |
16033 | } | |
c906108c | 16034 | } |
98751a41 JK |
16035 | |
16036 | /* Copy fi.typedef_field_list linked list elements content into the | |
16037 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16038 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16039 | { |
be2daae6 | 16040 | int count = fi.typedef_field_list.size (); |
98751a41 | 16041 | |
a0d7a4ff | 16042 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16043 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16044 | = ((struct decl_field *) |
be2daae6 TT |
16045 | TYPE_ALLOC (type, |
16046 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16047 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16048 | |
be2daae6 TT |
16049 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16050 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16051 | } |
c767944b | 16052 | |
883fd55a KS |
16053 | /* Copy fi.nested_types_list linked list elements content into the |
16054 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16055 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16056 | { |
be2daae6 | 16057 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16058 | |
16059 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16060 | TYPE_NESTED_TYPES_ARRAY (type) | |
16061 | = ((struct decl_field *) | |
be2daae6 TT |
16062 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16063 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16064 | |
be2daae6 TT |
16065 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16066 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16067 | } |
c906108c | 16068 | } |
63d06c5c | 16069 | |
bb5ed363 | 16070 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16071 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16072 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16073 | |
90aeadfc DC |
16074 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16075 | snapshots) has been known to create a die giving a declaration | |
16076 | for a class that has, as a child, a die giving a definition for a | |
16077 | nested class. So we have to process our children even if the | |
16078 | current die is a declaration. Normally, of course, a declaration | |
16079 | won't have any children at all. */ | |
134d01f1 | 16080 | |
ca040673 DE |
16081 | child_die = die->child; |
16082 | ||
90aeadfc DC |
16083 | while (child_die != NULL && child_die->tag) |
16084 | { | |
16085 | if (child_die->tag == DW_TAG_member | |
16086 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16087 | || child_die->tag == DW_TAG_inheritance |
16088 | || child_die->tag == DW_TAG_template_value_param | |
16089 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16090 | { |
90aeadfc | 16091 | /* Do nothing. */ |
134d01f1 | 16092 | } |
90aeadfc DC |
16093 | else |
16094 | process_die (child_die, cu); | |
134d01f1 | 16095 | |
90aeadfc | 16096 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16097 | } |
16098 | ||
fa4028e9 JB |
16099 | /* Do not consider external references. According to the DWARF standard, |
16100 | these DIEs are identified by the fact that they have no byte_size | |
16101 | attribute, and a declaration attribute. */ | |
16102 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16103 | || !die_is_declaration (die, cu)) | |
c767944b | 16104 | new_symbol (die, type, cu); |
134d01f1 DJ |
16105 | } |
16106 | ||
55426c9d JB |
16107 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16108 | update TYPE using some information only available in DIE's children. */ | |
16109 | ||
16110 | static void | |
16111 | update_enumeration_type_from_children (struct die_info *die, | |
16112 | struct type *type, | |
16113 | struct dwarf2_cu *cu) | |
16114 | { | |
60f7655a | 16115 | struct die_info *child_die; |
55426c9d JB |
16116 | int unsigned_enum = 1; |
16117 | int flag_enum = 1; | |
16118 | ULONGEST mask = 0; | |
55426c9d | 16119 | |
8268c778 | 16120 | auto_obstack obstack; |
55426c9d | 16121 | |
60f7655a DE |
16122 | for (child_die = die->child; |
16123 | child_die != NULL && child_die->tag; | |
16124 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16125 | { |
16126 | struct attribute *attr; | |
16127 | LONGEST value; | |
16128 | const gdb_byte *bytes; | |
16129 | struct dwarf2_locexpr_baton *baton; | |
16130 | const char *name; | |
60f7655a | 16131 | |
55426c9d JB |
16132 | if (child_die->tag != DW_TAG_enumerator) |
16133 | continue; | |
16134 | ||
16135 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16136 | if (attr == NULL) | |
16137 | continue; | |
16138 | ||
16139 | name = dwarf2_name (child_die, cu); | |
16140 | if (name == NULL) | |
16141 | name = "<anonymous enumerator>"; | |
16142 | ||
16143 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16144 | &value, &bytes, &baton); | |
16145 | if (value < 0) | |
16146 | { | |
16147 | unsigned_enum = 0; | |
16148 | flag_enum = 0; | |
16149 | } | |
16150 | else if ((mask & value) != 0) | |
16151 | flag_enum = 0; | |
16152 | else | |
16153 | mask |= value; | |
16154 | ||
16155 | /* If we already know that the enum type is neither unsigned, nor | |
16156 | a flag type, no need to look at the rest of the enumerates. */ | |
16157 | if (!unsigned_enum && !flag_enum) | |
16158 | break; | |
55426c9d JB |
16159 | } |
16160 | ||
16161 | if (unsigned_enum) | |
16162 | TYPE_UNSIGNED (type) = 1; | |
16163 | if (flag_enum) | |
16164 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16165 | } |
16166 | ||
134d01f1 DJ |
16167 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16168 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16169 | |
f792889a | 16170 | static struct type * |
134d01f1 | 16171 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16172 | { |
518817b3 | 16173 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16174 | struct type *type; |
c906108c | 16175 | struct attribute *attr; |
0114d602 | 16176 | const char *name; |
134d01f1 | 16177 | |
348e048f DE |
16178 | /* If the definition of this type lives in .debug_types, read that type. |
16179 | Don't follow DW_AT_specification though, that will take us back up | |
16180 | the chain and we want to go down. */ | |
45e58e77 | 16181 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16182 | if (attr) |
16183 | { | |
ac9ec31b | 16184 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16185 | |
ac9ec31b | 16186 | /* The type's CU may not be the same as CU. |
02142a6c | 16187 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16188 | return set_die_type (die, type, cu); |
16189 | } | |
16190 | ||
c906108c SS |
16191 | type = alloc_type (objfile); |
16192 | ||
16193 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16194 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16195 | if (name != NULL) |
7d455152 | 16196 | TYPE_TAG_NAME (type) = name; |
c906108c | 16197 | |
0626fc76 TT |
16198 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16199 | if (attr != NULL) | |
16200 | { | |
16201 | struct type *underlying_type = die_type (die, cu); | |
16202 | ||
16203 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16204 | } | |
16205 | ||
e142c38c | 16206 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16207 | if (attr) |
16208 | { | |
16209 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16210 | } | |
16211 | else | |
16212 | { | |
16213 | TYPE_LENGTH (type) = 0; | |
16214 | } | |
16215 | ||
2b4424c3 TT |
16216 | maybe_set_alignment (cu, die, type); |
16217 | ||
137033e9 JB |
16218 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16219 | declared as private in the package spec, and then defined only | |
16220 | inside the package body. Such types are known as Taft Amendment | |
16221 | Types. When another package uses such a type, an incomplete DIE | |
16222 | may be generated by the compiler. */ | |
02eb380e | 16223 | if (die_is_declaration (die, cu)) |
876cecd0 | 16224 | TYPE_STUB (type) = 1; |
02eb380e | 16225 | |
0626fc76 TT |
16226 | /* Finish the creation of this type by using the enum's children. |
16227 | We must call this even when the underlying type has been provided | |
16228 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16229 | update_enumeration_type_from_children (die, type, cu); |
16230 | ||
0626fc76 TT |
16231 | /* If this type has an underlying type that is not a stub, then we |
16232 | may use its attributes. We always use the "unsigned" attribute | |
16233 | in this situation, because ordinarily we guess whether the type | |
16234 | is unsigned -- but the guess can be wrong and the underlying type | |
16235 | can tell us the reality. However, we defer to a local size | |
16236 | attribute if one exists, because this lets the compiler override | |
16237 | the underlying type if needed. */ | |
16238 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16239 | { | |
16240 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16241 | if (TYPE_LENGTH (type) == 0) | |
16242 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
16243 | if (TYPE_RAW_ALIGN (type) == 0 |
16244 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
16245 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
16246 | } |
16247 | ||
3d567982 TT |
16248 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16249 | ||
f792889a | 16250 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16251 | } |
16252 | ||
16253 | /* Given a pointer to a die which begins an enumeration, process all | |
16254 | the dies that define the members of the enumeration, and create the | |
16255 | symbol for the enumeration type. | |
16256 | ||
16257 | NOTE: We reverse the order of the element list. */ | |
16258 | ||
16259 | static void | |
16260 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16261 | { | |
f792889a | 16262 | struct type *this_type; |
134d01f1 | 16263 | |
f792889a DJ |
16264 | this_type = get_die_type (die, cu); |
16265 | if (this_type == NULL) | |
16266 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16267 | |
639d11d3 | 16268 | if (die->child != NULL) |
c906108c | 16269 | { |
9dc481d3 DE |
16270 | struct die_info *child_die; |
16271 | struct symbol *sym; | |
16272 | struct field *fields = NULL; | |
16273 | int num_fields = 0; | |
15d034d0 | 16274 | const char *name; |
9dc481d3 | 16275 | |
639d11d3 | 16276 | child_die = die->child; |
c906108c SS |
16277 | while (child_die && child_die->tag) |
16278 | { | |
16279 | if (child_die->tag != DW_TAG_enumerator) | |
16280 | { | |
e7c27a73 | 16281 | process_die (child_die, cu); |
c906108c SS |
16282 | } |
16283 | else | |
16284 | { | |
39cbfefa DJ |
16285 | name = dwarf2_name (child_die, cu); |
16286 | if (name) | |
c906108c | 16287 | { |
f792889a | 16288 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
16289 | |
16290 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
16291 | { | |
16292 | fields = (struct field *) | |
16293 | xrealloc (fields, | |
16294 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 16295 | * sizeof (struct field)); |
c906108c SS |
16296 | } |
16297 | ||
3567439c | 16298 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 16299 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 16300 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
16301 | FIELD_BITSIZE (fields[num_fields]) = 0; |
16302 | ||
16303 | num_fields++; | |
16304 | } | |
16305 | } | |
16306 | ||
16307 | child_die = sibling_die (child_die); | |
16308 | } | |
16309 | ||
16310 | if (num_fields) | |
16311 | { | |
f792889a DJ |
16312 | TYPE_NFIELDS (this_type) = num_fields; |
16313 | TYPE_FIELDS (this_type) = (struct field *) | |
16314 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
16315 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 16316 | sizeof (struct field) * num_fields); |
b8c9b27d | 16317 | xfree (fields); |
c906108c | 16318 | } |
c906108c | 16319 | } |
134d01f1 | 16320 | |
6c83ed52 TT |
16321 | /* If we are reading an enum from a .debug_types unit, and the enum |
16322 | is a declaration, and the enum is not the signatured type in the | |
16323 | unit, then we do not want to add a symbol for it. Adding a | |
16324 | symbol would in some cases obscure the true definition of the | |
16325 | enum, giving users an incomplete type when the definition is | |
16326 | actually available. Note that we do not want to do this for all | |
16327 | enums which are just declarations, because C++0x allows forward | |
16328 | enum declarations. */ | |
3019eac3 | 16329 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16330 | && die_is_declaration (die, cu)) |
16331 | { | |
52dc124a | 16332 | struct signatured_type *sig_type; |
6c83ed52 | 16333 | |
c0f78cd4 | 16334 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16335 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16336 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16337 | return; |
16338 | } | |
16339 | ||
f792889a | 16340 | new_symbol (die, this_type, cu); |
c906108c SS |
16341 | } |
16342 | ||
16343 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16344 | the DIE's type field. For now, this only handles one dimensional | |
16345 | arrays. */ | |
16346 | ||
f792889a | 16347 | static struct type * |
e7c27a73 | 16348 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16349 | { |
518817b3 | 16350 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16351 | struct die_info *child_die; |
7e314c57 | 16352 | struct type *type; |
c906108c | 16353 | struct type *element_type, *range_type, *index_type; |
c906108c | 16354 | struct attribute *attr; |
15d034d0 | 16355 | const char *name; |
a405673c | 16356 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16357 | unsigned int bit_stride = 0; |
c906108c | 16358 | |
e7c27a73 | 16359 | element_type = die_type (die, cu); |
c906108c | 16360 | |
7e314c57 JK |
16361 | /* The die_type call above may have already set the type for this DIE. */ |
16362 | type = get_die_type (die, cu); | |
16363 | if (type) | |
16364 | return type; | |
16365 | ||
dc53a7ad JB |
16366 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16367 | if (attr != NULL) | |
a405673c JB |
16368 | { |
16369 | int stride_ok; | |
16370 | ||
16371 | byte_stride_prop | |
16372 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
16373 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop); | |
16374 | if (!stride_ok) | |
16375 | { | |
16376 | complaint (&symfile_complaints, | |
16377 | _("unable to read array DW_AT_byte_stride " | |
9d8780f0 SM |
16378 | " - DIE at %s [in module %s]"), |
16379 | sect_offset_str (die->sect_off), | |
518817b3 | 16380 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16381 | /* Ignore this attribute. We will likely not be able to print |
16382 | arrays of this type correctly, but there is little we can do | |
16383 | to help if we cannot read the attribute's value. */ | |
16384 | byte_stride_prop = NULL; | |
16385 | } | |
16386 | } | |
dc53a7ad JB |
16387 | |
16388 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16389 | if (attr != NULL) | |
16390 | bit_stride = DW_UNSND (attr); | |
16391 | ||
c906108c SS |
16392 | /* Irix 6.2 native cc creates array types without children for |
16393 | arrays with unspecified length. */ | |
639d11d3 | 16394 | if (die->child == NULL) |
c906108c | 16395 | { |
46bf5051 | 16396 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16397 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16398 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16399 | byte_stride_prop, bit_stride); |
f792889a | 16400 | return set_die_type (die, type, cu); |
c906108c SS |
16401 | } |
16402 | ||
791afaa2 | 16403 | std::vector<struct type *> range_types; |
639d11d3 | 16404 | child_die = die->child; |
c906108c SS |
16405 | while (child_die && child_die->tag) |
16406 | { | |
16407 | if (child_die->tag == DW_TAG_subrange_type) | |
16408 | { | |
f792889a | 16409 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16410 | |
f792889a | 16411 | if (child_type != NULL) |
a02abb62 | 16412 | { |
0963b4bd MS |
16413 | /* The range type was succesfully read. Save it for the |
16414 | array type creation. */ | |
791afaa2 | 16415 | range_types.push_back (child_type); |
a02abb62 | 16416 | } |
c906108c SS |
16417 | } |
16418 | child_die = sibling_die (child_die); | |
16419 | } | |
16420 | ||
16421 | /* Dwarf2 dimensions are output from left to right, create the | |
16422 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16423 | |
c906108c | 16424 | type = element_type; |
7ca2d3a3 DL |
16425 | |
16426 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16427 | { | |
16428 | int i = 0; | |
9a619af0 | 16429 | |
791afaa2 | 16430 | while (i < range_types.size ()) |
dc53a7ad | 16431 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16432 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16433 | } |
16434 | else | |
16435 | { | |
791afaa2 | 16436 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16437 | while (ndim-- > 0) |
dc53a7ad | 16438 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16439 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16440 | } |
c906108c | 16441 | |
f5f8a009 EZ |
16442 | /* Understand Dwarf2 support for vector types (like they occur on |
16443 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16444 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16445 | custom vendor extension. The main difference between a regular | |
16446 | array and the vector variant is that vectors are passed by value | |
16447 | to functions. */ | |
e142c38c | 16448 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 16449 | if (attr) |
ea37ba09 | 16450 | make_vector_type (type); |
f5f8a009 | 16451 | |
dbc98a8b KW |
16452 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16453 | implementation may choose to implement triple vectors using this | |
16454 | attribute. */ | |
16455 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
16456 | if (attr) | |
16457 | { | |
16458 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16459 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16460 | else | |
3e43a32a MS |
16461 | complaint (&symfile_complaints, |
16462 | _("DW_AT_byte_size for array type smaller " | |
16463 | "than the total size of elements")); | |
dbc98a8b KW |
16464 | } |
16465 | ||
39cbfefa DJ |
16466 | name = dwarf2_name (die, cu); |
16467 | if (name) | |
16468 | TYPE_NAME (type) = name; | |
6e70227d | 16469 | |
2b4424c3 TT |
16470 | maybe_set_alignment (cu, die, type); |
16471 | ||
0963b4bd | 16472 | /* Install the type in the die. */ |
7e314c57 JK |
16473 | set_die_type (die, type, cu); |
16474 | ||
16475 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16476 | set_descriptive_type (type, die, cu); |
16477 | ||
7e314c57 | 16478 | return type; |
c906108c SS |
16479 | } |
16480 | ||
7ca2d3a3 | 16481 | static enum dwarf_array_dim_ordering |
6e70227d | 16482 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16483 | { |
16484 | struct attribute *attr; | |
16485 | ||
16486 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16487 | ||
aead7601 SM |
16488 | if (attr) |
16489 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 16490 | |
0963b4bd MS |
16491 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16492 | opposite order to the dwarf2 specification, but data is still | |
16493 | laid out as per normal fortran. | |
7ca2d3a3 | 16494 | |
0963b4bd MS |
16495 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16496 | version checking. */ | |
7ca2d3a3 | 16497 | |
905e0470 PM |
16498 | if (cu->language == language_fortran |
16499 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16500 | { |
16501 | return DW_ORD_row_major; | |
16502 | } | |
16503 | ||
6e70227d | 16504 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16505 | { |
16506 | case array_column_major: | |
16507 | return DW_ORD_col_major; | |
16508 | case array_row_major: | |
16509 | default: | |
16510 | return DW_ORD_row_major; | |
16511 | }; | |
16512 | } | |
16513 | ||
72019c9c | 16514 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16515 | the DIE's type field. */ |
72019c9c | 16516 | |
f792889a | 16517 | static struct type * |
72019c9c GM |
16518 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16519 | { | |
7e314c57 JK |
16520 | struct type *domain_type, *set_type; |
16521 | struct attribute *attr; | |
f792889a | 16522 | |
7e314c57 JK |
16523 | domain_type = die_type (die, cu); |
16524 | ||
16525 | /* The die_type call above may have already set the type for this DIE. */ | |
16526 | set_type = get_die_type (die, cu); | |
16527 | if (set_type) | |
16528 | return set_type; | |
16529 | ||
16530 | set_type = create_set_type (NULL, domain_type); | |
16531 | ||
16532 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
16533 | if (attr) |
16534 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 16535 | |
2b4424c3 TT |
16536 | maybe_set_alignment (cu, die, set_type); |
16537 | ||
f792889a | 16538 | return set_die_type (die, set_type, cu); |
72019c9c | 16539 | } |
7ca2d3a3 | 16540 | |
0971de02 TT |
16541 | /* A helper for read_common_block that creates a locexpr baton. |
16542 | SYM is the symbol which we are marking as computed. | |
16543 | COMMON_DIE is the DIE for the common block. | |
16544 | COMMON_LOC is the location expression attribute for the common | |
16545 | block itself. | |
16546 | MEMBER_LOC is the location expression attribute for the particular | |
16547 | member of the common block that we are processing. | |
16548 | CU is the CU from which the above come. */ | |
16549 | ||
16550 | static void | |
16551 | mark_common_block_symbol_computed (struct symbol *sym, | |
16552 | struct die_info *common_die, | |
16553 | struct attribute *common_loc, | |
16554 | struct attribute *member_loc, | |
16555 | struct dwarf2_cu *cu) | |
16556 | { | |
518817b3 SM |
16557 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16558 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16559 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16560 | struct dwarf2_locexpr_baton *baton; | |
16561 | gdb_byte *ptr; | |
16562 | unsigned int cu_off; | |
16563 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16564 | LONGEST offset = 0; | |
16565 | ||
16566 | gdb_assert (common_loc && member_loc); | |
16567 | gdb_assert (attr_form_is_block (common_loc)); | |
16568 | gdb_assert (attr_form_is_block (member_loc) | |
16569 | || attr_form_is_constant (member_loc)); | |
16570 | ||
8d749320 | 16571 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16572 | baton->per_cu = cu->per_cu; |
16573 | gdb_assert (baton->per_cu); | |
16574 | ||
16575 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16576 | ||
16577 | if (attr_form_is_constant (member_loc)) | |
16578 | { | |
16579 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16580 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16581 | } | |
16582 | else | |
16583 | baton->size += DW_BLOCK (member_loc)->size; | |
16584 | ||
224c3ddb | 16585 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16586 | baton->data = ptr; |
16587 | ||
16588 | *ptr++ = DW_OP_call4; | |
9c541725 | 16589 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16590 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16591 | ptr += 4; | |
16592 | ||
16593 | if (attr_form_is_constant (member_loc)) | |
16594 | { | |
16595 | *ptr++ = DW_OP_addr; | |
16596 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16597 | ptr += cu->header.addr_size; | |
16598 | } | |
16599 | else | |
16600 | { | |
16601 | /* We have to copy the data here, because DW_OP_call4 will only | |
16602 | use a DW_AT_location attribute. */ | |
16603 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16604 | ptr += DW_BLOCK (member_loc)->size; | |
16605 | } | |
16606 | ||
16607 | *ptr++ = DW_OP_plus; | |
16608 | gdb_assert (ptr - baton->data == baton->size); | |
16609 | ||
0971de02 | 16610 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16611 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16612 | } |
16613 | ||
4357ac6c TT |
16614 | /* Create appropriate locally-scoped variables for all the |
16615 | DW_TAG_common_block entries. Also create a struct common_block | |
16616 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
16617 | is used to sepate the common blocks name namespace from regular | |
16618 | variable names. */ | |
c906108c SS |
16619 | |
16620 | static void | |
e7c27a73 | 16621 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16622 | { |
0971de02 TT |
16623 | struct attribute *attr; |
16624 | ||
16625 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
16626 | if (attr) | |
16627 | { | |
16628 | /* Support the .debug_loc offsets. */ | |
16629 | if (attr_form_is_block (attr)) | |
16630 | { | |
16631 | /* Ok. */ | |
16632 | } | |
16633 | else if (attr_form_is_section_offset (attr)) | |
16634 | { | |
16635 | dwarf2_complex_location_expr_complaint (); | |
16636 | attr = NULL; | |
16637 | } | |
16638 | else | |
16639 | { | |
16640 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16641 | "common block member"); | |
16642 | attr = NULL; | |
16643 | } | |
16644 | } | |
16645 | ||
639d11d3 | 16646 | if (die->child != NULL) |
c906108c | 16647 | { |
518817b3 | 16648 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16649 | struct die_info *child_die; |
16650 | size_t n_entries = 0, size; | |
16651 | struct common_block *common_block; | |
16652 | struct symbol *sym; | |
74ac6d43 | 16653 | |
4357ac6c TT |
16654 | for (child_die = die->child; |
16655 | child_die && child_die->tag; | |
16656 | child_die = sibling_die (child_die)) | |
16657 | ++n_entries; | |
16658 | ||
16659 | size = (sizeof (struct common_block) | |
16660 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16661 | common_block |
16662 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16663 | size); | |
4357ac6c TT |
16664 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16665 | common_block->n_entries = 0; | |
16666 | ||
16667 | for (child_die = die->child; | |
16668 | child_die && child_die->tag; | |
16669 | child_die = sibling_die (child_die)) | |
16670 | { | |
16671 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16672 | symbol scope. */ | |
e7c27a73 | 16673 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16674 | if (sym != NULL) |
16675 | { | |
16676 | struct attribute *member_loc; | |
16677 | ||
16678 | common_block->contents[common_block->n_entries++] = sym; | |
16679 | ||
16680 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16681 | cu); | |
16682 | if (member_loc) | |
16683 | { | |
16684 | /* GDB has handled this for a long time, but it is | |
16685 | not specified by DWARF. It seems to have been | |
16686 | emitted by gfortran at least as recently as: | |
16687 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
16688 | complaint (&symfile_complaints, | |
16689 | _("Variable in common block has " | |
16690 | "DW_AT_data_member_location " | |
9d8780f0 SM |
16691 | "- DIE at %s [in module %s]"), |
16692 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16693 | objfile_name (objfile)); |
0971de02 TT |
16694 | |
16695 | if (attr_form_is_section_offset (member_loc)) | |
16696 | dwarf2_complex_location_expr_complaint (); | |
16697 | else if (attr_form_is_constant (member_loc) | |
16698 | || attr_form_is_block (member_loc)) | |
16699 | { | |
16700 | if (attr) | |
16701 | mark_common_block_symbol_computed (sym, die, attr, | |
16702 | member_loc, cu); | |
16703 | } | |
16704 | else | |
16705 | dwarf2_complex_location_expr_complaint (); | |
16706 | } | |
16707 | } | |
c906108c | 16708 | } |
4357ac6c TT |
16709 | |
16710 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16711 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16712 | } |
16713 | } | |
16714 | ||
0114d602 | 16715 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16716 | |
0114d602 DJ |
16717 | static struct type * |
16718 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16719 | { |
518817b3 | 16720 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16721 | const char *previous_prefix, *name; |
9219021c | 16722 | int is_anonymous; |
0114d602 DJ |
16723 | struct type *type; |
16724 | ||
16725 | /* For extensions, reuse the type of the original namespace. */ | |
16726 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16727 | { | |
16728 | struct die_info *ext_die; | |
16729 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16730 | |
0114d602 DJ |
16731 | ext_die = dwarf2_extension (die, &ext_cu); |
16732 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16733 | |
16734 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16735 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16736 | return set_die_type (die, type, cu); |
16737 | } | |
9219021c | 16738 | |
e142c38c | 16739 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16740 | |
16741 | /* Now build the name of the current namespace. */ | |
16742 | ||
0114d602 DJ |
16743 | previous_prefix = determine_prefix (die, cu); |
16744 | if (previous_prefix[0] != '\0') | |
16745 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16746 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16747 | |
16748 | /* Create the type. */ | |
19f392bc | 16749 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 DJ |
16750 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
16751 | ||
60531b24 | 16752 | return set_die_type (die, type, cu); |
0114d602 DJ |
16753 | } |
16754 | ||
22cee43f | 16755 | /* Read a namespace scope. */ |
0114d602 DJ |
16756 | |
16757 | static void | |
16758 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16759 | { | |
518817b3 | 16760 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16761 | int is_anonymous; |
9219021c | 16762 | |
5c4e30ca DC |
16763 | /* Add a symbol associated to this if we haven't seen the namespace |
16764 | before. Also, add a using directive if it's an anonymous | |
16765 | namespace. */ | |
9219021c | 16766 | |
f2f0e013 | 16767 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16768 | { |
16769 | struct type *type; | |
16770 | ||
0114d602 | 16771 | type = read_type_die (die, cu); |
e7c27a73 | 16772 | new_symbol (die, type, cu); |
5c4e30ca | 16773 | |
e8e80198 | 16774 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16775 | if (is_anonymous) |
0114d602 DJ |
16776 | { |
16777 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16778 | |
eb1e02fd | 16779 | std::vector<const char *> excludes; |
22cee43f PMR |
16780 | add_using_directive (using_directives (cu->language), |
16781 | previous_prefix, TYPE_NAME (type), NULL, | |
eb1e02fd | 16782 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16783 | } |
5c4e30ca | 16784 | } |
9219021c | 16785 | |
639d11d3 | 16786 | if (die->child != NULL) |
d9fa45fe | 16787 | { |
639d11d3 | 16788 | struct die_info *child_die = die->child; |
6e70227d | 16789 | |
d9fa45fe DC |
16790 | while (child_die && child_die->tag) |
16791 | { | |
e7c27a73 | 16792 | process_die (child_die, cu); |
d9fa45fe DC |
16793 | child_die = sibling_die (child_die); |
16794 | } | |
16795 | } | |
38d518c9 EZ |
16796 | } |
16797 | ||
f55ee35c JK |
16798 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16799 | imported module. Still we need that type as local Fortran "use ... only" | |
16800 | declaration imports depend on the created type in determine_prefix. */ | |
16801 | ||
16802 | static struct type * | |
16803 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16804 | { | |
518817b3 | 16805 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16806 | const char *module_name; |
f55ee35c JK |
16807 | struct type *type; |
16808 | ||
16809 | module_name = dwarf2_name (die, cu); | |
16810 | if (!module_name) | |
3e43a32a | 16811 | complaint (&symfile_complaints, |
9d8780f0 SM |
16812 | _("DW_TAG_module has no name, offset %s"), |
16813 | sect_offset_str (die->sect_off)); | |
19f392bc | 16814 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c JK |
16815 | |
16816 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
16817 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
16818 | ||
16819 | return set_die_type (die, type, cu); | |
16820 | } | |
16821 | ||
5d7cb8df JK |
16822 | /* Read a Fortran module. */ |
16823 | ||
16824 | static void | |
16825 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16826 | { | |
16827 | struct die_info *child_die = die->child; | |
530e8392 KB |
16828 | struct type *type; |
16829 | ||
16830 | type = read_type_die (die, cu); | |
16831 | new_symbol (die, type, cu); | |
5d7cb8df | 16832 | |
5d7cb8df JK |
16833 | while (child_die && child_die->tag) |
16834 | { | |
16835 | process_die (child_die, cu); | |
16836 | child_die = sibling_die (child_die); | |
16837 | } | |
16838 | } | |
16839 | ||
38d518c9 EZ |
16840 | /* Return the name of the namespace represented by DIE. Set |
16841 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16842 | namespace. */ | |
16843 | ||
16844 | static const char * | |
e142c38c | 16845 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16846 | { |
16847 | struct die_info *current_die; | |
16848 | const char *name = NULL; | |
16849 | ||
16850 | /* Loop through the extensions until we find a name. */ | |
16851 | ||
16852 | for (current_die = die; | |
16853 | current_die != NULL; | |
f2f0e013 | 16854 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16855 | { |
96553a0c DE |
16856 | /* We don't use dwarf2_name here so that we can detect the absence |
16857 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16858 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16859 | |
38d518c9 EZ |
16860 | if (name != NULL) |
16861 | break; | |
16862 | } | |
16863 | ||
16864 | /* Is it an anonymous namespace? */ | |
16865 | ||
16866 | *is_anonymous = (name == NULL); | |
16867 | if (*is_anonymous) | |
2b1dbab0 | 16868 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16869 | |
16870 | return name; | |
d9fa45fe DC |
16871 | } |
16872 | ||
c906108c SS |
16873 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16874 | the user defined type vector. */ | |
16875 | ||
f792889a | 16876 | static struct type * |
e7c27a73 | 16877 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16878 | { |
518817b3 SM |
16879 | struct gdbarch *gdbarch |
16880 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16881 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16882 | struct type *type; |
8b2dbe47 KB |
16883 | struct attribute *attr_byte_size; |
16884 | struct attribute *attr_address_class; | |
16885 | int byte_size, addr_class; | |
7e314c57 JK |
16886 | struct type *target_type; |
16887 | ||
16888 | target_type = die_type (die, cu); | |
c906108c | 16889 | |
7e314c57 JK |
16890 | /* The die_type call above may have already set the type for this DIE. */ |
16891 | type = get_die_type (die, cu); | |
16892 | if (type) | |
16893 | return type; | |
16894 | ||
16895 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16896 | |
e142c38c | 16897 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16898 | if (attr_byte_size) |
16899 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16900 | else |
8b2dbe47 KB |
16901 | byte_size = cu_header->addr_size; |
16902 | ||
e142c38c | 16903 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16904 | if (attr_address_class) |
16905 | addr_class = DW_UNSND (attr_address_class); | |
16906 | else | |
16907 | addr_class = DW_ADDR_none; | |
16908 | ||
2b4424c3 TT |
16909 | ULONGEST alignment = get_alignment (cu, die); |
16910 | ||
16911 | /* If the pointer size, alignment, or address class is different | |
16912 | than the default, create a type variant marked as such and set | |
16913 | the length accordingly. */ | |
16914 | if (TYPE_LENGTH (type) != byte_size | |
16915 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16916 | && alignment != TYPE_RAW_ALIGN (type)) | |
16917 | || addr_class != DW_ADDR_none) | |
c906108c | 16918 | { |
5e2b427d | 16919 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16920 | { |
16921 | int type_flags; | |
16922 | ||
849957d9 | 16923 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16924 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16925 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16926 | == 0); | |
8b2dbe47 KB |
16927 | type = make_type_with_address_space (type, type_flags); |
16928 | } | |
16929 | else if (TYPE_LENGTH (type) != byte_size) | |
16930 | { | |
3e43a32a MS |
16931 | complaint (&symfile_complaints, |
16932 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 16933 | } |
2b4424c3 TT |
16934 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16935 | { | |
16936 | complaint (&symfile_complaints, | |
16937 | _("Invalid DW_AT_alignment" | |
16938 | " - DIE at %s [in module %s]"), | |
16939 | sect_offset_str (die->sect_off), | |
16940 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16941 | } | |
6e70227d | 16942 | else |
9a619af0 MS |
16943 | { |
16944 | /* Should we also complain about unhandled address classes? */ | |
16945 | } | |
c906108c | 16946 | } |
8b2dbe47 KB |
16947 | |
16948 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16949 | set_type_align (type, alignment); |
f792889a | 16950 | return set_die_type (die, type, cu); |
c906108c SS |
16951 | } |
16952 | ||
16953 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16954 | the user defined type vector. */ | |
16955 | ||
f792889a | 16956 | static struct type * |
e7c27a73 | 16957 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16958 | { |
16959 | struct type *type; | |
16960 | struct type *to_type; | |
16961 | struct type *domain; | |
16962 | ||
e7c27a73 DJ |
16963 | to_type = die_type (die, cu); |
16964 | domain = die_containing_type (die, cu); | |
0d5de010 | 16965 | |
7e314c57 JK |
16966 | /* The calls above may have already set the type for this DIE. */ |
16967 | type = get_die_type (die, cu); | |
16968 | if (type) | |
16969 | return type; | |
16970 | ||
0d5de010 DJ |
16971 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
16972 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
16973 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
16974 | { | |
518817b3 SM |
16975 | struct type *new_type |
16976 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
16977 | |
16978 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
16979 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
16980 | TYPE_VARARGS (to_type)); | |
16981 | type = lookup_methodptr_type (new_type); | |
16982 | } | |
0d5de010 DJ |
16983 | else |
16984 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16985 | |
f792889a | 16986 | return set_die_type (die, type, cu); |
c906108c SS |
16987 | } |
16988 | ||
4297a3f0 | 16989 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16990 | the user defined type vector. */ |
16991 | ||
f792889a | 16992 | static struct type * |
4297a3f0 AV |
16993 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16994 | enum type_code refcode) | |
c906108c | 16995 | { |
e7c27a73 | 16996 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16997 | struct type *type, *target_type; |
c906108c SS |
16998 | struct attribute *attr; |
16999 | ||
4297a3f0 AV |
17000 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17001 | ||
7e314c57 JK |
17002 | target_type = die_type (die, cu); |
17003 | ||
17004 | /* The die_type call above may have already set the type for this DIE. */ | |
17005 | type = get_die_type (die, cu); | |
17006 | if (type) | |
17007 | return type; | |
17008 | ||
4297a3f0 | 17009 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17010 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17011 | if (attr) |
17012 | { | |
17013 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17014 | } | |
17015 | else | |
17016 | { | |
107d2387 | 17017 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17018 | } |
2b4424c3 | 17019 | maybe_set_alignment (cu, die, type); |
f792889a | 17020 | return set_die_type (die, type, cu); |
c906108c SS |
17021 | } |
17022 | ||
cf363f18 MW |
17023 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17024 | outputs DWARF type qualifiers that apply to an array, not the | |
17025 | element type. But GDB relies on the array element type to carry | |
17026 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17027 | specification. */ | |
17028 | ||
17029 | static struct type * | |
17030 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17031 | struct type *base_type, int cnst, int voltl) | |
17032 | { | |
17033 | struct type *el_type, *inner_array; | |
17034 | ||
17035 | base_type = copy_type (base_type); | |
17036 | inner_array = base_type; | |
17037 | ||
17038 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
17039 | { | |
17040 | TYPE_TARGET_TYPE (inner_array) = | |
17041 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17042 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17043 | } | |
17044 | ||
17045 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17046 | cnst |= TYPE_CONST (el_type); | |
17047 | voltl |= TYPE_VOLATILE (el_type); | |
17048 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17049 | ||
17050 | return set_die_type (die, base_type, cu); | |
17051 | } | |
17052 | ||
f792889a | 17053 | static struct type * |
e7c27a73 | 17054 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17055 | { |
f792889a | 17056 | struct type *base_type, *cv_type; |
c906108c | 17057 | |
e7c27a73 | 17058 | base_type = die_type (die, cu); |
7e314c57 JK |
17059 | |
17060 | /* The die_type call above may have already set the type for this DIE. */ | |
17061 | cv_type = get_die_type (die, cu); | |
17062 | if (cv_type) | |
17063 | return cv_type; | |
17064 | ||
2f608a3a KW |
17065 | /* In case the const qualifier is applied to an array type, the element type |
17066 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
17067 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 17068 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17069 | |
f792889a DJ |
17070 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17071 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17072 | } |
17073 | ||
f792889a | 17074 | static struct type * |
e7c27a73 | 17075 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17076 | { |
f792889a | 17077 | struct type *base_type, *cv_type; |
c906108c | 17078 | |
e7c27a73 | 17079 | base_type = die_type (die, cu); |
7e314c57 JK |
17080 | |
17081 | /* The die_type call above may have already set the type for this DIE. */ | |
17082 | cv_type = get_die_type (die, cu); | |
17083 | if (cv_type) | |
17084 | return cv_type; | |
17085 | ||
cf363f18 MW |
17086 | /* In case the volatile qualifier is applied to an array type, the |
17087 | element type is so qualified, not the array type (section 6.7.3 | |
17088 | of C99). */ | |
17089 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17090 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17091 | ||
f792889a DJ |
17092 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17093 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17094 | } |
17095 | ||
06d66ee9 TT |
17096 | /* Handle DW_TAG_restrict_type. */ |
17097 | ||
17098 | static struct type * | |
17099 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17100 | { | |
17101 | struct type *base_type, *cv_type; | |
17102 | ||
17103 | base_type = die_type (die, cu); | |
17104 | ||
17105 | /* The die_type call above may have already set the type for this DIE. */ | |
17106 | cv_type = get_die_type (die, cu); | |
17107 | if (cv_type) | |
17108 | return cv_type; | |
17109 | ||
17110 | cv_type = make_restrict_type (base_type); | |
17111 | return set_die_type (die, cv_type, cu); | |
17112 | } | |
17113 | ||
a2c2acaf MW |
17114 | /* Handle DW_TAG_atomic_type. */ |
17115 | ||
17116 | static struct type * | |
17117 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17118 | { | |
17119 | struct type *base_type, *cv_type; | |
17120 | ||
17121 | base_type = die_type (die, cu); | |
17122 | ||
17123 | /* The die_type call above may have already set the type for this DIE. */ | |
17124 | cv_type = get_die_type (die, cu); | |
17125 | if (cv_type) | |
17126 | return cv_type; | |
17127 | ||
17128 | cv_type = make_atomic_type (base_type); | |
17129 | return set_die_type (die, cv_type, cu); | |
17130 | } | |
17131 | ||
c906108c SS |
17132 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17133 | the user defined type vector. It isn't really a user defined type, | |
17134 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17135 | attribute to reference it. */ | |
17136 | ||
f792889a | 17137 | static struct type * |
e7c27a73 | 17138 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17139 | { |
518817b3 | 17140 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17141 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17142 | struct type *type, *range_type, *index_type, *char_type; |
17143 | struct attribute *attr; | |
17144 | unsigned int length; | |
17145 | ||
e142c38c | 17146 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
17147 | if (attr) |
17148 | { | |
17149 | length = DW_UNSND (attr); | |
17150 | } | |
17151 | else | |
17152 | { | |
0963b4bd | 17153 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 17154 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
17155 | if (attr) |
17156 | { | |
17157 | length = DW_UNSND (attr); | |
17158 | } | |
17159 | else | |
17160 | { | |
17161 | length = 1; | |
17162 | } | |
c906108c | 17163 | } |
6ccb9162 | 17164 | |
46bf5051 | 17165 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17166 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
17167 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17168 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17169 | |
f792889a | 17170 | return set_die_type (die, type, cu); |
c906108c SS |
17171 | } |
17172 | ||
4d804846 JB |
17173 | /* Assuming that DIE corresponds to a function, returns nonzero |
17174 | if the function is prototyped. */ | |
17175 | ||
17176 | static int | |
17177 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17178 | { | |
17179 | struct attribute *attr; | |
17180 | ||
17181 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17182 | if (attr && (DW_UNSND (attr) != 0)) | |
17183 | return 1; | |
17184 | ||
17185 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
17186 | is only meaninful for C, but the concept also extends to other | |
17187 | languages that allow unprototyped functions (Eg: Objective C). | |
17188 | For all other languages, assume that functions are always | |
17189 | prototyped. */ | |
17190 | if (cu->language != language_c | |
17191 | && cu->language != language_objc | |
17192 | && cu->language != language_opencl) | |
17193 | return 1; | |
17194 | ||
17195 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17196 | prototyped and unprototyped functions; default to prototyped, | |
17197 | since that is more common in modern code (and RealView warns | |
17198 | about unprototyped functions). */ | |
17199 | if (producer_is_realview (cu->producer)) | |
17200 | return 1; | |
17201 | ||
17202 | return 0; | |
17203 | } | |
17204 | ||
c906108c SS |
17205 | /* Handle DIES due to C code like: |
17206 | ||
17207 | struct foo | |
c5aa993b JM |
17208 | { |
17209 | int (*funcp)(int a, long l); | |
17210 | int b; | |
17211 | }; | |
c906108c | 17212 | |
0963b4bd | 17213 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17214 | |
f792889a | 17215 | static struct type * |
e7c27a73 | 17216 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17217 | { |
518817b3 | 17218 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17219 | struct type *type; /* Type that this function returns. */ |
17220 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17221 | struct attribute *attr; |
17222 | ||
e7c27a73 | 17223 | type = die_type (die, cu); |
7e314c57 JK |
17224 | |
17225 | /* The die_type call above may have already set the type for this DIE. */ | |
17226 | ftype = get_die_type (die, cu); | |
17227 | if (ftype) | |
17228 | return ftype; | |
17229 | ||
0c8b41f1 | 17230 | ftype = lookup_function_type (type); |
c906108c | 17231 | |
4d804846 | 17232 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17233 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17234 | |
c055b101 CV |
17235 | /* Store the calling convention in the type if it's available in |
17236 | the subroutine die. Otherwise set the calling convention to | |
17237 | the default value DW_CC_normal. */ | |
17238 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
17239 | if (attr) |
17240 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
17241 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
17242 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17243 | else | |
17244 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17245 | |
743649fd MW |
17246 | /* Record whether the function returns normally to its caller or not |
17247 | if the DWARF producer set that information. */ | |
17248 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17249 | if (attr && (DW_UNSND (attr) != 0)) | |
17250 | TYPE_NO_RETURN (ftype) = 1; | |
17251 | ||
76c10ea2 GM |
17252 | /* We need to add the subroutine type to the die immediately so |
17253 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17254 | declared as the same subroutine type. */ |
76c10ea2 | 17255 | set_die_type (die, ftype, cu); |
6e70227d | 17256 | |
639d11d3 | 17257 | if (die->child != NULL) |
c906108c | 17258 | { |
bb5ed363 | 17259 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17260 | struct die_info *child_die; |
8072405b | 17261 | int nparams, iparams; |
c906108c SS |
17262 | |
17263 | /* Count the number of parameters. | |
17264 | FIXME: GDB currently ignores vararg functions, but knows about | |
17265 | vararg member functions. */ | |
8072405b | 17266 | nparams = 0; |
639d11d3 | 17267 | child_die = die->child; |
c906108c SS |
17268 | while (child_die && child_die->tag) |
17269 | { | |
17270 | if (child_die->tag == DW_TAG_formal_parameter) | |
17271 | nparams++; | |
17272 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17273 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17274 | child_die = sibling_die (child_die); |
17275 | } | |
17276 | ||
17277 | /* Allocate storage for parameters and fill them in. */ | |
17278 | TYPE_NFIELDS (ftype) = nparams; | |
17279 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17280 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17281 | |
8072405b JK |
17282 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17283 | even if we error out during the parameters reading below. */ | |
17284 | for (iparams = 0; iparams < nparams; iparams++) | |
17285 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17286 | ||
17287 | iparams = 0; | |
639d11d3 | 17288 | child_die = die->child; |
c906108c SS |
17289 | while (child_die && child_die->tag) |
17290 | { | |
17291 | if (child_die->tag == DW_TAG_formal_parameter) | |
17292 | { | |
3ce3b1ba PA |
17293 | struct type *arg_type; |
17294 | ||
17295 | /* DWARF version 2 has no clean way to discern C++ | |
17296 | static and non-static member functions. G++ helps | |
17297 | GDB by marking the first parameter for non-static | |
17298 | member functions (which is the this pointer) as | |
17299 | artificial. We pass this information to | |
17300 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17301 | ||
17302 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17303 | 4.5 does not yet generate. */ | |
e142c38c | 17304 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
17305 | if (attr) |
17306 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
17307 | else | |
9c37b5ae | 17308 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17309 | arg_type = die_type (child_die, cu); |
17310 | ||
17311 | /* RealView does not mark THIS as const, which the testsuite | |
17312 | expects. GCC marks THIS as const in method definitions, | |
17313 | but not in the class specifications (GCC PR 43053). */ | |
17314 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17315 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17316 | { | |
17317 | int is_this = 0; | |
17318 | struct dwarf2_cu *arg_cu = cu; | |
17319 | const char *name = dwarf2_name (child_die, cu); | |
17320 | ||
17321 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
17322 | if (attr) | |
17323 | { | |
17324 | /* If the compiler emits this, use it. */ | |
17325 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17326 | is_this = 1; | |
17327 | } | |
17328 | else if (name && strcmp (name, "this") == 0) | |
17329 | /* Function definitions will have the argument names. */ | |
17330 | is_this = 1; | |
17331 | else if (name == NULL && iparams == 0) | |
17332 | /* Declarations may not have the names, so like | |
17333 | elsewhere in GDB, assume an artificial first | |
17334 | argument is "this". */ | |
17335 | is_this = 1; | |
17336 | ||
17337 | if (is_this) | |
17338 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17339 | arg_type, 0); | |
17340 | } | |
17341 | ||
17342 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17343 | iparams++; |
17344 | } | |
17345 | child_die = sibling_die (child_die); | |
17346 | } | |
17347 | } | |
17348 | ||
76c10ea2 | 17349 | return ftype; |
c906108c SS |
17350 | } |
17351 | ||
f792889a | 17352 | static struct type * |
e7c27a73 | 17353 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17354 | { |
518817b3 | 17355 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17356 | const char *name = NULL; |
3c8e0968 | 17357 | struct type *this_type, *target_type; |
c906108c | 17358 | |
94af9270 | 17359 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17360 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17361 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17362 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17363 | target_type = die_type (die, cu); |
17364 | if (target_type != this_type) | |
17365 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17366 | else | |
17367 | { | |
17368 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17369 | spec and cause infinite loops in GDB. */ | |
17370 | complaint (&symfile_complaints, | |
17371 | _("Self-referential DW_TAG_typedef " | |
9d8780f0 SM |
17372 | "- DIE at %s [in module %s]"), |
17373 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17374 | TYPE_TARGET_TYPE (this_type) = NULL; |
17375 | } | |
f792889a | 17376 | return this_type; |
c906108c SS |
17377 | } |
17378 | ||
9b790ce7 UW |
17379 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17380 | (which may be different from NAME) to the architecture back-end to allow | |
17381 | it to guess the correct format if necessary. */ | |
17382 | ||
17383 | static struct type * | |
17384 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
17385 | const char *name_hint) | |
17386 | { | |
17387 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17388 | const struct floatformat **format; | |
17389 | struct type *type; | |
17390 | ||
17391 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17392 | if (format) | |
17393 | type = init_float_type (objfile, bits, name, format); | |
17394 | else | |
77b7c781 | 17395 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17396 | |
17397 | return type; | |
17398 | } | |
17399 | ||
c906108c SS |
17400 | /* Find a representation of a given base type and install |
17401 | it in the TYPE field of the die. */ | |
17402 | ||
f792889a | 17403 | static struct type * |
e7c27a73 | 17404 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17405 | { |
518817b3 | 17406 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17407 | struct type *type; |
17408 | struct attribute *attr; | |
19f392bc | 17409 | int encoding = 0, bits = 0; |
15d034d0 | 17410 | const char *name; |
c906108c | 17411 | |
e142c38c | 17412 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
17413 | if (attr) |
17414 | { | |
17415 | encoding = DW_UNSND (attr); | |
17416 | } | |
e142c38c | 17417 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17418 | if (attr) |
17419 | { | |
19f392bc | 17420 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 17421 | } |
39cbfefa | 17422 | name = dwarf2_name (die, cu); |
6ccb9162 | 17423 | if (!name) |
c906108c | 17424 | { |
6ccb9162 UW |
17425 | complaint (&symfile_complaints, |
17426 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 17427 | } |
6ccb9162 UW |
17428 | |
17429 | switch (encoding) | |
c906108c | 17430 | { |
6ccb9162 UW |
17431 | case DW_ATE_address: |
17432 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17433 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17434 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17435 | break; |
17436 | case DW_ATE_boolean: | |
19f392bc | 17437 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17438 | break; |
17439 | case DW_ATE_complex_float: | |
9b790ce7 | 17440 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 17441 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17442 | break; |
17443 | case DW_ATE_decimal_float: | |
19f392bc | 17444 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17445 | break; |
17446 | case DW_ATE_float: | |
9b790ce7 | 17447 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
17448 | break; |
17449 | case DW_ATE_signed: | |
19f392bc | 17450 | type = init_integer_type (objfile, bits, 0, name); |
6ccb9162 UW |
17451 | break; |
17452 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17453 | if (cu->language == language_fortran |
17454 | && name | |
61012eef | 17455 | && startswith (name, "character(")) |
19f392bc UW |
17456 | type = init_character_type (objfile, bits, 1, name); |
17457 | else | |
17458 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 UW |
17459 | break; |
17460 | case DW_ATE_signed_char: | |
6e70227d | 17461 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17462 | || cu->language == language_pascal |
17463 | || cu->language == language_fortran) | |
19f392bc UW |
17464 | type = init_character_type (objfile, bits, 0, name); |
17465 | else | |
17466 | type = init_integer_type (objfile, bits, 0, name); | |
6ccb9162 UW |
17467 | break; |
17468 | case DW_ATE_unsigned_char: | |
868a0084 | 17469 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17470 | || cu->language == language_pascal |
c44af4eb TT |
17471 | || cu->language == language_fortran |
17472 | || cu->language == language_rust) | |
19f392bc UW |
17473 | type = init_character_type (objfile, bits, 1, name); |
17474 | else | |
17475 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 | 17476 | break; |
75079b2b | 17477 | case DW_ATE_UTF: |
53e710ac PA |
17478 | { |
17479 | gdbarch *arch = get_objfile_arch (objfile); | |
17480 | ||
17481 | if (bits == 16) | |
17482 | type = builtin_type (arch)->builtin_char16; | |
17483 | else if (bits == 32) | |
17484 | type = builtin_type (arch)->builtin_char32; | |
17485 | else | |
17486 | { | |
17487 | complaint (&symfile_complaints, | |
17488 | _("unsupported DW_ATE_UTF bit size: '%d'"), | |
17489 | bits); | |
17490 | type = init_integer_type (objfile, bits, 1, name); | |
17491 | } | |
17492 | return set_die_type (die, type, cu); | |
17493 | } | |
75079b2b TT |
17494 | break; |
17495 | ||
6ccb9162 UW |
17496 | default: |
17497 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
17498 | dwarf_type_encoding_name (encoding)); | |
77b7c781 | 17499 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17500 | break; |
c906108c | 17501 | } |
6ccb9162 | 17502 | |
0114d602 | 17503 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17504 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17505 | |
2b4424c3 TT |
17506 | maybe_set_alignment (cu, die, type); |
17507 | ||
f792889a | 17508 | return set_die_type (die, type, cu); |
c906108c SS |
17509 | } |
17510 | ||
80180f79 SA |
17511 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17512 | resulting value of the attribute into struct bound_prop. | |
17513 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17514 | ||
17515 | static int | |
17516 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
17517 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
17518 | { | |
17519 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17520 | struct obstack *obstack |
17521 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 SA |
17522 | |
17523 | if (attr == NULL || prop == NULL) | |
17524 | return 0; | |
17525 | ||
17526 | if (attr_form_is_block (attr)) | |
17527 | { | |
8d749320 | 17528 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
17529 | baton->referenced_type = NULL; |
17530 | baton->locexpr.per_cu = cu->per_cu; | |
17531 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17532 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
17533 | prop->data.baton = baton; | |
17534 | prop->kind = PROP_LOCEXPR; | |
17535 | gdb_assert (prop->data.baton != NULL); | |
17536 | } | |
17537 | else if (attr_form_is_ref (attr)) | |
17538 | { | |
17539 | struct dwarf2_cu *target_cu = cu; | |
17540 | struct die_info *target_die; | |
17541 | struct attribute *target_attr; | |
17542 | ||
17543 | target_die = follow_die_ref (die, attr, &target_cu); | |
17544 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17545 | if (target_attr == NULL) |
17546 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17547 | target_cu); | |
80180f79 SA |
17548 | if (target_attr == NULL) |
17549 | return 0; | |
17550 | ||
df25ebbd | 17551 | switch (target_attr->name) |
80180f79 | 17552 | { |
df25ebbd JB |
17553 | case DW_AT_location: |
17554 | if (attr_form_is_section_offset (target_attr)) | |
17555 | { | |
8d749320 | 17556 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17557 | baton->referenced_type = die_type (target_die, target_cu); |
17558 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
17559 | prop->data.baton = baton; | |
17560 | prop->kind = PROP_LOCLIST; | |
17561 | gdb_assert (prop->data.baton != NULL); | |
17562 | } | |
17563 | else if (attr_form_is_block (target_attr)) | |
17564 | { | |
8d749320 | 17565 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17566 | baton->referenced_type = die_type (target_die, target_cu); |
17567 | baton->locexpr.per_cu = cu->per_cu; | |
17568 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17569 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
17570 | prop->data.baton = baton; | |
17571 | prop->kind = PROP_LOCEXPR; | |
17572 | gdb_assert (prop->data.baton != NULL); | |
17573 | } | |
17574 | else | |
17575 | { | |
17576 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17577 | "dynamic property"); | |
17578 | return 0; | |
17579 | } | |
17580 | break; | |
17581 | case DW_AT_data_member_location: | |
17582 | { | |
17583 | LONGEST offset; | |
17584 | ||
17585 | if (!handle_data_member_location (target_die, target_cu, | |
17586 | &offset)) | |
17587 | return 0; | |
17588 | ||
8d749320 | 17589 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
17590 | baton->referenced_type = read_type_die (target_die->parent, |
17591 | target_cu); | |
df25ebbd JB |
17592 | baton->offset_info.offset = offset; |
17593 | baton->offset_info.type = die_type (target_die, target_cu); | |
17594 | prop->data.baton = baton; | |
17595 | prop->kind = PROP_ADDR_OFFSET; | |
17596 | break; | |
17597 | } | |
80180f79 SA |
17598 | } |
17599 | } | |
17600 | else if (attr_form_is_constant (attr)) | |
17601 | { | |
17602 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17603 | prop->kind = PROP_CONST; | |
17604 | } | |
17605 | else | |
17606 | { | |
17607 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17608 | dwarf2_name (die, cu)); | |
17609 | return 0; | |
17610 | } | |
17611 | ||
17612 | return 1; | |
17613 | } | |
17614 | ||
a02abb62 JB |
17615 | /* Read the given DW_AT_subrange DIE. */ |
17616 | ||
f792889a | 17617 | static struct type * |
a02abb62 JB |
17618 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17619 | { | |
4c9ad8c2 | 17620 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17621 | struct type *range_type; |
17622 | struct attribute *attr; | |
729efb13 | 17623 | struct dynamic_prop low, high; |
4fae6e18 | 17624 | int low_default_is_valid; |
c451ebe5 | 17625 | int high_bound_is_count = 0; |
15d034d0 | 17626 | const char *name; |
43bbcdc2 | 17627 | LONGEST negative_mask; |
e77813c8 | 17628 | |
4c9ad8c2 TT |
17629 | orig_base_type = die_type (die, cu); |
17630 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
17631 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17632 | creating the range type, but we use the result of check_typedef | |
17633 | when examining properties of the type. */ | |
17634 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17635 | |
7e314c57 JK |
17636 | /* The die_type call above may have already set the type for this DIE. */ |
17637 | range_type = get_die_type (die, cu); | |
17638 | if (range_type) | |
17639 | return range_type; | |
17640 | ||
729efb13 SA |
17641 | low.kind = PROP_CONST; |
17642 | high.kind = PROP_CONST; | |
17643 | high.data.const_val = 0; | |
17644 | ||
4fae6e18 JK |
17645 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17646 | omitting DW_AT_lower_bound. */ | |
17647 | switch (cu->language) | |
6e70227d | 17648 | { |
4fae6e18 JK |
17649 | case language_c: |
17650 | case language_cplus: | |
729efb13 | 17651 | low.data.const_val = 0; |
4fae6e18 JK |
17652 | low_default_is_valid = 1; |
17653 | break; | |
17654 | case language_fortran: | |
729efb13 | 17655 | low.data.const_val = 1; |
4fae6e18 JK |
17656 | low_default_is_valid = 1; |
17657 | break; | |
17658 | case language_d: | |
4fae6e18 | 17659 | case language_objc: |
c44af4eb | 17660 | case language_rust: |
729efb13 | 17661 | low.data.const_val = 0; |
4fae6e18 JK |
17662 | low_default_is_valid = (cu->header.version >= 4); |
17663 | break; | |
17664 | case language_ada: | |
17665 | case language_m2: | |
17666 | case language_pascal: | |
729efb13 | 17667 | low.data.const_val = 1; |
4fae6e18 JK |
17668 | low_default_is_valid = (cu->header.version >= 4); |
17669 | break; | |
17670 | default: | |
729efb13 | 17671 | low.data.const_val = 0; |
4fae6e18 JK |
17672 | low_default_is_valid = 0; |
17673 | break; | |
a02abb62 JB |
17674 | } |
17675 | ||
e142c38c | 17676 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 17677 | if (attr) |
11c1ba78 | 17678 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
17679 | else if (!low_default_is_valid) |
17680 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
9d8780f0 SM |
17681 | "- DIE at %s [in module %s]"), |
17682 | sect_offset_str (die->sect_off), | |
518817b3 | 17683 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17684 | |
e142c38c | 17685 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 17686 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
17687 | { |
17688 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 17689 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 17690 | { |
c451ebe5 SA |
17691 | /* If bounds are constant do the final calculation here. */ |
17692 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17693 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17694 | else | |
17695 | high_bound_is_count = 1; | |
c2ff108b | 17696 | } |
e77813c8 PM |
17697 | } |
17698 | ||
17699 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17700 | without specifying a base type. | |
17701 | In that case, the base type must be set to the type of | |
17702 | the lower bound, upper bound or count, in that order, if any of these | |
17703 | three attributes references an object that has a type. | |
17704 | If no base type is found, the Dwarf-2 specifications say that | |
17705 | a signed integer type of size equal to the size of an address should | |
17706 | be used. | |
17707 | For the following C code: `extern char gdb_int [];' | |
17708 | GCC produces an empty range DIE. | |
17709 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 17710 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
17711 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
17712 | { | |
518817b3 | 17713 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e77813c8 PM |
17714 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
17715 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
17716 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
17717 | ||
17718 | /* Test "int", "long int", and "long long int" objfile types, | |
17719 | and select the first one having a size above or equal to the | |
17720 | architecture address size. */ | |
17721 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17722 | base_type = int_type; | |
17723 | else | |
17724 | { | |
17725 | int_type = objfile_type (objfile)->builtin_long; | |
17726 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17727 | base_type = int_type; | |
17728 | else | |
17729 | { | |
17730 | int_type = objfile_type (objfile)->builtin_long_long; | |
17731 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17732 | base_type = int_type; | |
17733 | } | |
17734 | } | |
17735 | } | |
a02abb62 | 17736 | |
dbb9c2b1 JB |
17737 | /* Normally, the DWARF producers are expected to use a signed |
17738 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17739 | But this is unfortunately not always the case, as witnessed | |
17740 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17741 | is used instead. To work around that ambiguity, we treat | |
17742 | the bounds as signed, and thus sign-extend their values, when | |
17743 | the base type is signed. */ | |
6e70227d | 17744 | negative_mask = |
66c6502d | 17745 | -((LONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17746 | if (low.kind == PROP_CONST |
17747 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17748 | low.data.const_val |= negative_mask; | |
17749 | if (high.kind == PROP_CONST | |
17750 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17751 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17752 | |
729efb13 | 17753 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 17754 | |
c451ebe5 SA |
17755 | if (high_bound_is_count) |
17756 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17757 | ||
c2ff108b JK |
17758 | /* Ada expects an empty array on no boundary attributes. */ |
17759 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17760 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17761 | |
39cbfefa DJ |
17762 | name = dwarf2_name (die, cu); |
17763 | if (name) | |
17764 | TYPE_NAME (range_type) = name; | |
6e70227d | 17765 | |
e142c38c | 17766 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
17767 | if (attr) |
17768 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
17769 | ||
2b4424c3 TT |
17770 | maybe_set_alignment (cu, die, range_type); |
17771 | ||
7e314c57 JK |
17772 | set_die_type (die, range_type, cu); |
17773 | ||
17774 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17775 | set_descriptive_type (range_type, die, cu); |
17776 | ||
7e314c57 | 17777 | return range_type; |
a02abb62 | 17778 | } |
6e70227d | 17779 | |
f792889a | 17780 | static struct type * |
81a17f79 JB |
17781 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17782 | { | |
17783 | struct type *type; | |
81a17f79 | 17784 | |
518817b3 SM |
17785 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17786 | NULL); | |
0114d602 | 17787 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17788 | |
74a2f8ff JB |
17789 | /* In Ada, an unspecified type is typically used when the description |
17790 | of the type is defered to a different unit. When encountering | |
17791 | such a type, we treat it as a stub, and try to resolve it later on, | |
17792 | when needed. */ | |
17793 | if (cu->language == language_ada) | |
17794 | TYPE_STUB (type) = 1; | |
17795 | ||
f792889a | 17796 | return set_die_type (die, type, cu); |
81a17f79 | 17797 | } |
a02abb62 | 17798 | |
639d11d3 DC |
17799 | /* Read a single die and all its descendents. Set the die's sibling |
17800 | field to NULL; set other fields in the die correctly, and set all | |
17801 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17802 | location of the info_ptr after reading all of those dies. PARENT | |
17803 | is the parent of the die in question. */ | |
17804 | ||
17805 | static struct die_info * | |
dee91e82 | 17806 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17807 | const gdb_byte *info_ptr, |
17808 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17809 | struct die_info *parent) |
639d11d3 DC |
17810 | { |
17811 | struct die_info *die; | |
d521ce57 | 17812 | const gdb_byte *cur_ptr; |
639d11d3 DC |
17813 | int has_children; |
17814 | ||
bf6af496 | 17815 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
17816 | if (die == NULL) |
17817 | { | |
17818 | *new_info_ptr = cur_ptr; | |
17819 | return NULL; | |
17820 | } | |
93311388 | 17821 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
17822 | |
17823 | if (has_children) | |
bf6af496 | 17824 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17825 | else |
17826 | { | |
17827 | die->child = NULL; | |
17828 | *new_info_ptr = cur_ptr; | |
17829 | } | |
17830 | ||
17831 | die->sibling = NULL; | |
17832 | die->parent = parent; | |
17833 | return die; | |
17834 | } | |
17835 | ||
17836 | /* Read a die, all of its descendents, and all of its siblings; set | |
17837 | all of the fields of all of the dies correctly. Arguments are as | |
17838 | in read_die_and_children. */ | |
17839 | ||
17840 | static struct die_info * | |
bf6af496 | 17841 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17842 | const gdb_byte *info_ptr, |
17843 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17844 | struct die_info *parent) |
639d11d3 DC |
17845 | { |
17846 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17847 | const gdb_byte *cur_ptr; |
639d11d3 | 17848 | |
c906108c | 17849 | cur_ptr = info_ptr; |
639d11d3 DC |
17850 | first_die = last_sibling = NULL; |
17851 | ||
17852 | while (1) | |
c906108c | 17853 | { |
639d11d3 | 17854 | struct die_info *die |
dee91e82 | 17855 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17856 | |
1d325ec1 | 17857 | if (die == NULL) |
c906108c | 17858 | { |
639d11d3 DC |
17859 | *new_info_ptr = cur_ptr; |
17860 | return first_die; | |
c906108c | 17861 | } |
1d325ec1 DJ |
17862 | |
17863 | if (!first_die) | |
17864 | first_die = die; | |
c906108c | 17865 | else |
1d325ec1 DJ |
17866 | last_sibling->sibling = die; |
17867 | ||
17868 | last_sibling = die; | |
c906108c | 17869 | } |
c906108c SS |
17870 | } |
17871 | ||
bf6af496 DE |
17872 | /* Read a die, all of its descendents, and all of its siblings; set |
17873 | all of the fields of all of the dies correctly. Arguments are as | |
17874 | in read_die_and_children. | |
17875 | This the main entry point for reading a DIE and all its children. */ | |
17876 | ||
17877 | static struct die_info * | |
17878 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17879 | const gdb_byte *info_ptr, |
17880 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17881 | struct die_info *parent) |
17882 | { | |
17883 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17884 | new_info_ptr, parent); | |
17885 | ||
b4f54984 | 17886 | if (dwarf_die_debug) |
bf6af496 DE |
17887 | { |
17888 | fprintf_unfiltered (gdb_stdlog, | |
17889 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 17890 | get_section_name (reader->die_section), |
bf6af496 DE |
17891 | (unsigned) (info_ptr - reader->die_section->buffer), |
17892 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17893 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17894 | } |
17895 | ||
17896 | return die; | |
17897 | } | |
17898 | ||
3019eac3 DE |
17899 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
17900 | attributes. | |
17901 | The caller is responsible for filling in the extra attributes | |
17902 | and updating (*DIEP)->num_attrs. | |
17903 | Set DIEP to point to a newly allocated die with its information, | |
17904 | except for its child, sibling, and parent fields. | |
17905 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 17906 | |
d521ce57 | 17907 | static const gdb_byte * |
3019eac3 | 17908 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 17909 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 17910 | int *has_children, int num_extra_attrs) |
93311388 | 17911 | { |
b64f50a1 | 17912 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
17913 | struct abbrev_info *abbrev; |
17914 | struct die_info *die; | |
17915 | struct dwarf2_cu *cu = reader->cu; | |
17916 | bfd *abfd = reader->abfd; | |
17917 | ||
9c541725 | 17918 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
17919 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
17920 | info_ptr += bytes_read; | |
17921 | if (!abbrev_number) | |
17922 | { | |
17923 | *diep = NULL; | |
17924 | *has_children = 0; | |
17925 | return info_ptr; | |
17926 | } | |
17927 | ||
685af9cd | 17928 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 17929 | if (!abbrev) |
348e048f DE |
17930 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
17931 | abbrev_number, | |
17932 | bfd_get_filename (abfd)); | |
17933 | ||
3019eac3 | 17934 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 17935 | die->sect_off = sect_off; |
93311388 DE |
17936 | die->tag = abbrev->tag; |
17937 | die->abbrev = abbrev_number; | |
17938 | ||
3019eac3 DE |
17939 | /* Make the result usable. |
17940 | The caller needs to update num_attrs after adding the extra | |
17941 | attributes. */ | |
93311388 DE |
17942 | die->num_attrs = abbrev->num_attrs; |
17943 | ||
17944 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
17945 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
17946 | info_ptr); | |
93311388 DE |
17947 | |
17948 | *diep = die; | |
17949 | *has_children = abbrev->has_children; | |
17950 | return info_ptr; | |
17951 | } | |
17952 | ||
3019eac3 DE |
17953 | /* Read a die and all its attributes. |
17954 | Set DIEP to point to a newly allocated die with its information, | |
17955 | except for its child, sibling, and parent fields. | |
17956 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
17957 | ||
d521ce57 | 17958 | static const gdb_byte * |
3019eac3 | 17959 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 17960 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
17961 | int *has_children) |
17962 | { | |
d521ce57 | 17963 | const gdb_byte *result; |
bf6af496 DE |
17964 | |
17965 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
17966 | ||
b4f54984 | 17967 | if (dwarf_die_debug) |
bf6af496 DE |
17968 | { |
17969 | fprintf_unfiltered (gdb_stdlog, | |
17970 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 17971 | get_section_name (reader->die_section), |
bf6af496 DE |
17972 | (unsigned) (info_ptr - reader->die_section->buffer), |
17973 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17974 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
17975 | } |
17976 | ||
17977 | return result; | |
3019eac3 | 17978 | } |
433df2d4 DE |
17979 | \f |
17980 | /* Abbreviation tables. | |
3019eac3 | 17981 | |
433df2d4 | 17982 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
17983 | stored in a separate .debug_abbrev section. Before we read any |
17984 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
17985 | in a hash table. */ |
17986 | ||
17987 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
17988 | ||
685af9cd TT |
17989 | struct abbrev_info * |
17990 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
17991 | { |
17992 | struct abbrev_info *abbrev; | |
17993 | ||
685af9cd | 17994 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 17995 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 17996 | |
433df2d4 DE |
17997 | return abbrev; |
17998 | } | |
17999 | ||
18000 | /* Add an abbreviation to the table. */ | |
c906108c | 18001 | |
685af9cd TT |
18002 | void |
18003 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
18004 | struct abbrev_info *abbrev) | |
433df2d4 DE |
18005 | { |
18006 | unsigned int hash_number; | |
18007 | ||
18008 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
18009 | abbrev->next = m_abbrevs[hash_number]; |
18010 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 18011 | } |
dee91e82 | 18012 | |
433df2d4 DE |
18013 | /* Look up an abbrev in the table. |
18014 | Returns NULL if the abbrev is not found. */ | |
18015 | ||
685af9cd TT |
18016 | struct abbrev_info * |
18017 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 18018 | { |
433df2d4 DE |
18019 | unsigned int hash_number; |
18020 | struct abbrev_info *abbrev; | |
18021 | ||
18022 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 18023 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
18024 | |
18025 | while (abbrev) | |
18026 | { | |
18027 | if (abbrev->number == abbrev_number) | |
18028 | return abbrev; | |
18029 | abbrev = abbrev->next; | |
18030 | } | |
18031 | return NULL; | |
18032 | } | |
18033 | ||
18034 | /* Read in an abbrev table. */ | |
18035 | ||
685af9cd | 18036 | static abbrev_table_up |
ed2dc618 SM |
18037 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18038 | struct dwarf2_section_info *section, | |
9c541725 | 18039 | sect_offset sect_off) |
433df2d4 DE |
18040 | { |
18041 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 18042 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 18043 | const gdb_byte *abbrev_ptr; |
c906108c SS |
18044 | struct abbrev_info *cur_abbrev; |
18045 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 18046 | unsigned int abbrev_form; |
f3dd6933 DJ |
18047 | struct attr_abbrev *cur_attrs; |
18048 | unsigned int allocated_attrs; | |
c906108c | 18049 | |
685af9cd | 18050 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 18051 | |
433df2d4 | 18052 | dwarf2_read_section (objfile, section); |
9c541725 | 18053 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
18054 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18055 | abbrev_ptr += bytes_read; | |
18056 | ||
f3dd6933 | 18057 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 18058 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 18059 | |
0963b4bd | 18060 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
18061 | while (abbrev_number) |
18062 | { | |
685af9cd | 18063 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
18064 | |
18065 | /* read in abbrev header */ | |
18066 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
18067 | cur_abbrev->tag |
18068 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
18069 | abbrev_ptr += bytes_read; |
18070 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
18071 | abbrev_ptr += 1; | |
18072 | ||
18073 | /* now read in declarations */ | |
22d2f3ab | 18074 | for (;;) |
c906108c | 18075 | { |
43988095 JK |
18076 | LONGEST implicit_const; |
18077 | ||
22d2f3ab JK |
18078 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18079 | abbrev_ptr += bytes_read; | |
18080 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18081 | abbrev_ptr += bytes_read; | |
43988095 JK |
18082 | if (abbrev_form == DW_FORM_implicit_const) |
18083 | { | |
18084 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
18085 | &bytes_read); | |
18086 | abbrev_ptr += bytes_read; | |
18087 | } | |
18088 | else | |
18089 | { | |
18090 | /* Initialize it due to a false compiler warning. */ | |
18091 | implicit_const = -1; | |
18092 | } | |
22d2f3ab JK |
18093 | |
18094 | if (abbrev_name == 0) | |
18095 | break; | |
18096 | ||
f3dd6933 | 18097 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 18098 | { |
f3dd6933 DJ |
18099 | allocated_attrs += ATTR_ALLOC_CHUNK; |
18100 | cur_attrs | |
224c3ddb | 18101 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 18102 | } |
ae038cb0 | 18103 | |
aead7601 SM |
18104 | cur_attrs[cur_abbrev->num_attrs].name |
18105 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 18106 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 18107 | = (enum dwarf_form) abbrev_form; |
43988095 | 18108 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 18109 | ++cur_abbrev->num_attrs; |
c906108c SS |
18110 | } |
18111 | ||
8d749320 SM |
18112 | cur_abbrev->attrs = |
18113 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18114 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
18115 | memcpy (cur_abbrev->attrs, cur_attrs, |
18116 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
18117 | ||
685af9cd | 18118 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18119 | |
18120 | /* Get next abbreviation. | |
18121 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18122 | always properly terminated with an abbrev number of 0. |
18123 | Exit loop if we encounter an abbreviation which we have | |
18124 | already read (which means we are about to read the abbreviations | |
18125 | for the next compile unit) or if the end of the abbreviation | |
18126 | table is reached. */ | |
433df2d4 | 18127 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18128 | break; |
18129 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18130 | abbrev_ptr += bytes_read; | |
685af9cd | 18131 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18132 | break; |
18133 | } | |
f3dd6933 DJ |
18134 | |
18135 | xfree (cur_attrs); | |
433df2d4 | 18136 | return abbrev_table; |
c906108c SS |
18137 | } |
18138 | ||
72bf9492 DJ |
18139 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18140 | symbol for. */ | |
18141 | ||
18142 | static int | |
18143 | is_type_tag_for_partial (int tag) | |
18144 | { | |
18145 | switch (tag) | |
18146 | { | |
18147 | #if 0 | |
18148 | /* Some types that would be reasonable to generate partial symbols for, | |
18149 | that we don't at present. */ | |
18150 | case DW_TAG_array_type: | |
18151 | case DW_TAG_file_type: | |
18152 | case DW_TAG_ptr_to_member_type: | |
18153 | case DW_TAG_set_type: | |
18154 | case DW_TAG_string_type: | |
18155 | case DW_TAG_subroutine_type: | |
18156 | #endif | |
18157 | case DW_TAG_base_type: | |
18158 | case DW_TAG_class_type: | |
680b30c7 | 18159 | case DW_TAG_interface_type: |
72bf9492 DJ |
18160 | case DW_TAG_enumeration_type: |
18161 | case DW_TAG_structure_type: | |
18162 | case DW_TAG_subrange_type: | |
18163 | case DW_TAG_typedef: | |
18164 | case DW_TAG_union_type: | |
18165 | return 1; | |
18166 | default: | |
18167 | return 0; | |
18168 | } | |
18169 | } | |
18170 | ||
18171 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18172 | ||
18173 | static struct partial_die_info * | |
dee91e82 | 18174 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18175 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18176 | { |
dee91e82 | 18177 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18178 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18179 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18180 | unsigned int bytes_read; |
5afb4e99 | 18181 | unsigned int load_all = 0; |
72bf9492 DJ |
18182 | int nesting_level = 1; |
18183 | ||
18184 | parent_die = NULL; | |
18185 | last_die = NULL; | |
18186 | ||
7adf1e79 DE |
18187 | gdb_assert (cu->per_cu != NULL); |
18188 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18189 | load_all = 1; |
18190 | ||
72bf9492 DJ |
18191 | cu->partial_dies |
18192 | = htab_create_alloc_ex (cu->header.length / 12, | |
18193 | partial_die_hash, | |
18194 | partial_die_eq, | |
18195 | NULL, | |
18196 | &cu->comp_unit_obstack, | |
18197 | hashtab_obstack_allocate, | |
18198 | dummy_obstack_deallocate); | |
18199 | ||
72bf9492 DJ |
18200 | while (1) |
18201 | { | |
685af9cd | 18202 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18203 | |
18204 | /* A NULL abbrev means the end of a series of children. */ | |
18205 | if (abbrev == NULL) | |
18206 | { | |
18207 | if (--nesting_level == 0) | |
cd9983dd YQ |
18208 | return first_die; |
18209 | ||
72bf9492 DJ |
18210 | info_ptr += bytes_read; |
18211 | last_die = parent_die; | |
18212 | parent_die = parent_die->die_parent; | |
18213 | continue; | |
18214 | } | |
18215 | ||
98bfdba5 PA |
18216 | /* Check for template arguments. We never save these; if |
18217 | they're seen, we just mark the parent, and go on our way. */ | |
18218 | if (parent_die != NULL | |
18219 | && cu->language == language_cplus | |
18220 | && (abbrev->tag == DW_TAG_template_type_param | |
18221 | || abbrev->tag == DW_TAG_template_value_param)) | |
18222 | { | |
18223 | parent_die->has_template_arguments = 1; | |
18224 | ||
18225 | if (!load_all) | |
18226 | { | |
18227 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18228 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18229 | continue; |
18230 | } | |
18231 | } | |
18232 | ||
0d99eb77 | 18233 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18234 | Skip their other children. */ |
18235 | if (!load_all | |
18236 | && cu->language == language_cplus | |
18237 | && parent_die != NULL | |
18238 | && parent_die->tag == DW_TAG_subprogram) | |
18239 | { | |
dee91e82 | 18240 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18241 | continue; |
18242 | } | |
18243 | ||
5afb4e99 DJ |
18244 | /* Check whether this DIE is interesting enough to save. Normally |
18245 | we would not be interested in members here, but there may be | |
18246 | later variables referencing them via DW_AT_specification (for | |
18247 | static members). */ | |
18248 | if (!load_all | |
18249 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18250 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18251 | && abbrev->tag != DW_TAG_enumerator |
18252 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18253 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18254 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18255 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18256 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18257 | && abbrev->tag != DW_TAG_module |
95554aad | 18258 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18259 | && abbrev->tag != DW_TAG_imported_unit |
18260 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18261 | { |
18262 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18263 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18264 | continue; |
18265 | } | |
18266 | ||
6f06d47b YQ |
18267 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18268 | abbrev); | |
cd9983dd | 18269 | |
48fbe735 | 18270 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18271 | |
18272 | /* This two-pass algorithm for processing partial symbols has a | |
18273 | high cost in cache pressure. Thus, handle some simple cases | |
18274 | here which cover the majority of C partial symbols. DIEs | |
18275 | which neither have specification tags in them, nor could have | |
18276 | specification tags elsewhere pointing at them, can simply be | |
18277 | processed and discarded. | |
18278 | ||
18279 | This segment is also optional; scan_partial_symbols and | |
18280 | add_partial_symbol will handle these DIEs if we chain | |
18281 | them in normally. When compilers which do not emit large | |
18282 | quantities of duplicate debug information are more common, | |
18283 | this code can probably be removed. */ | |
18284 | ||
18285 | /* Any complete simple types at the top level (pretty much all | |
18286 | of them, for a language without namespaces), can be processed | |
18287 | directly. */ | |
18288 | if (parent_die == NULL | |
cd9983dd YQ |
18289 | && pdi.has_specification == 0 |
18290 | && pdi.is_declaration == 0 | |
18291 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18292 | || pdi.tag == DW_TAG_base_type | |
18293 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18294 | { |
cd9983dd YQ |
18295 | if (building_psymtab && pdi.name != NULL) |
18296 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, | |
72bf9492 | 18297 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 | 18298 | &objfile->static_psymbols, |
1762568f | 18299 | 0, cu->language, objfile); |
cd9983dd | 18300 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18301 | continue; |
18302 | } | |
18303 | ||
d8228535 JK |
18304 | /* The exception for DW_TAG_typedef with has_children above is |
18305 | a workaround of GCC PR debug/47510. In the case of this complaint | |
18306 | type_name_no_tag_or_error will error on such types later. | |
18307 | ||
18308 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18309 | it could not find the child DIEs referenced later, this is checked | |
18310 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18311 | ||
cd9983dd | 18312 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
d8228535 JK |
18313 | complaint (&symfile_complaints, |
18314 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
9d8780f0 | 18315 | "- DIE at %s [in module %s]"), |
cd9983dd | 18316 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18317 | |
72bf9492 DJ |
18318 | /* If we're at the second level, and we're an enumerator, and |
18319 | our parent has no specification (meaning possibly lives in a | |
18320 | namespace elsewhere), then we can add the partial symbol now | |
18321 | instead of queueing it. */ | |
cd9983dd | 18322 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18323 | && parent_die != NULL |
18324 | && parent_die->die_parent == NULL | |
18325 | && parent_die->tag == DW_TAG_enumeration_type | |
18326 | && parent_die->has_specification == 0) | |
18327 | { | |
cd9983dd | 18328 | if (pdi.name == NULL) |
3e43a32a MS |
18329 | complaint (&symfile_complaints, |
18330 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 18331 | else if (building_psymtab) |
cd9983dd | 18332 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, |
72bf9492 | 18333 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 18334 | cu->language == language_cplus |
bb5ed363 DE |
18335 | ? &objfile->global_psymbols |
18336 | : &objfile->static_psymbols, | |
1762568f | 18337 | 0, cu->language, objfile); |
72bf9492 | 18338 | |
cd9983dd | 18339 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18340 | continue; |
18341 | } | |
18342 | ||
cd9983dd | 18343 | struct partial_die_info *part_die |
6f06d47b | 18344 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18345 | |
72bf9492 DJ |
18346 | /* We'll save this DIE so link it in. */ |
18347 | part_die->die_parent = parent_die; | |
18348 | part_die->die_sibling = NULL; | |
18349 | part_die->die_child = NULL; | |
18350 | ||
18351 | if (last_die && last_die == parent_die) | |
18352 | last_die->die_child = part_die; | |
18353 | else if (last_die) | |
18354 | last_die->die_sibling = part_die; | |
18355 | ||
18356 | last_die = part_die; | |
18357 | ||
18358 | if (first_die == NULL) | |
18359 | first_die = part_die; | |
18360 | ||
18361 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18362 | find interesting need to be in the hash table, because we | |
18363 | also have the parent/sibling/child chains; only those that we | |
18364 | might refer to by offset later during partial symbol reading. | |
18365 | ||
18366 | For now this means things that might have be the target of a | |
18367 | DW_AT_specification, DW_AT_abstract_origin, or | |
18368 | DW_AT_extension. DW_AT_extension will refer only to | |
18369 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18370 | many things under the function DIE, but we do not recurse | |
18371 | into function DIEs during partial symbol reading) and | |
18372 | possibly variables as well; DW_AT_specification refers to | |
18373 | declarations. Declarations ought to have the DW_AT_declaration | |
18374 | flag. It happens that GCC forgets to put it in sometimes, but | |
18375 | only for functions, not for types. | |
18376 | ||
18377 | Adding more things than necessary to the hash table is harmless | |
18378 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18379 | wasted time in find_partial_die, when we reread the compilation |
18380 | unit with load_all_dies set. */ | |
72bf9492 | 18381 | |
5afb4e99 | 18382 | if (load_all |
72929c62 | 18383 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18384 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18385 | || abbrev->tag == DW_TAG_variable |
18386 | || abbrev->tag == DW_TAG_namespace | |
18387 | || part_die->is_declaration) | |
18388 | { | |
18389 | void **slot; | |
18390 | ||
18391 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18392 | to_underlying (part_die->sect_off), |
18393 | INSERT); | |
72bf9492 DJ |
18394 | *slot = part_die; |
18395 | } | |
18396 | ||
72bf9492 | 18397 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18398 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18399 | languages we have to, so that we can get at method physnames |
18400 | to infer fully qualified class names, for DW_AT_specification, | |
18401 | and for C++ template arguments. For C++, we also look one level | |
18402 | inside functions to find template arguments (if the name of the | |
18403 | function does not already contain the template arguments). | |
bc30ff58 JB |
18404 | |
18405 | For Ada, we need to scan the children of subprograms and lexical | |
18406 | blocks as well because Ada allows the definition of nested | |
18407 | entities that could be interesting for the debugger, such as | |
18408 | nested subprograms for instance. */ | |
72bf9492 | 18409 | if (last_die->has_children |
5afb4e99 DJ |
18410 | && (load_all |
18411 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18412 | || last_die->tag == DW_TAG_module |
72bf9492 | 18413 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18414 | || (cu->language == language_cplus |
18415 | && last_die->tag == DW_TAG_subprogram | |
18416 | && (last_die->name == NULL | |
18417 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18418 | || (cu->language != language_c |
18419 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18420 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18421 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
18422 | || last_die->tag == DW_TAG_union_type)) |
18423 | || (cu->language == language_ada | |
18424 | && (last_die->tag == DW_TAG_subprogram | |
18425 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18426 | { |
18427 | nesting_level++; | |
18428 | parent_die = last_die; | |
18429 | continue; | |
18430 | } | |
18431 | ||
18432 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18433 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18434 | |
18435 | /* Back to the top, do it again. */ | |
18436 | } | |
18437 | } | |
18438 | ||
6f06d47b YQ |
18439 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18440 | struct abbrev_info *abbrev) | |
18441 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18442 | { | |
18443 | } | |
18444 | ||
35cc7ed7 YQ |
18445 | /* Read a minimal amount of information into the minimal die structure. |
18446 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18447 | |
48fbe735 YQ |
18448 | const gdb_byte * |
18449 | partial_die_info::read (const struct die_reader_specs *reader, | |
18450 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18451 | { |
dee91e82 | 18452 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18453 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18454 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18455 | unsigned int i; |
c5aa993b | 18456 | int has_low_pc_attr = 0; |
c906108c | 18457 | int has_high_pc_attr = 0; |
91da1414 | 18458 | int high_pc_relative = 0; |
c906108c | 18459 | |
fd0a254f | 18460 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18461 | { |
48fbe735 YQ |
18462 | struct attribute attr; |
18463 | ||
fd0a254f | 18464 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
c906108c SS |
18465 | |
18466 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 18467 | partial symbol table. */ |
c906108c SS |
18468 | switch (attr.name) |
18469 | { | |
18470 | case DW_AT_name: | |
48fbe735 | 18471 | switch (tag) |
71c25dea TT |
18472 | { |
18473 | case DW_TAG_compile_unit: | |
95554aad | 18474 | case DW_TAG_partial_unit: |
348e048f | 18475 | case DW_TAG_type_unit: |
71c25dea TT |
18476 | /* Compilation units have a DW_AT_name that is a filename, not |
18477 | a source language identifier. */ | |
18478 | case DW_TAG_enumeration_type: | |
18479 | case DW_TAG_enumerator: | |
18480 | /* These tags always have simple identifiers already; no need | |
18481 | to canonicalize them. */ | |
48fbe735 | 18482 | name = DW_STRING (&attr); |
71c25dea TT |
18483 | break; |
18484 | default: | |
48fbe735 YQ |
18485 | { |
18486 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18487 | ||
18488 | name | |
18489 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18490 | &objfile->per_bfd->storage_obstack); | |
18491 | } | |
71c25dea TT |
18492 | break; |
18493 | } | |
c906108c | 18494 | break; |
31ef98ae | 18495 | case DW_AT_linkage_name: |
c906108c | 18496 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18497 | /* Note that both forms of linkage name might appear. We |
18498 | assume they will be the same, and we only store the last | |
18499 | one we see. */ | |
94af9270 | 18500 | if (cu->language == language_ada) |
48fbe735 YQ |
18501 | name = DW_STRING (&attr); |
18502 | linkage_name = DW_STRING (&attr); | |
c906108c SS |
18503 | break; |
18504 | case DW_AT_low_pc: | |
18505 | has_low_pc_attr = 1; | |
48fbe735 | 18506 | lowpc = attr_value_as_address (&attr); |
c906108c SS |
18507 | break; |
18508 | case DW_AT_high_pc: | |
18509 | has_high_pc_attr = 1; | |
48fbe735 | 18510 | highpc = attr_value_as_address (&attr); |
31aa7e4e JB |
18511 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) |
18512 | high_pc_relative = 1; | |
c906108c SS |
18513 | break; |
18514 | case DW_AT_location: | |
0963b4bd | 18515 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18516 | if (attr_form_is_block (&attr)) |
18517 | { | |
48fbe735 | 18518 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18519 | } |
3690dd37 | 18520 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18521 | { |
4d3c2250 | 18522 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18523 | } |
18524 | else | |
18525 | { | |
4d3c2250 KB |
18526 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18527 | "partial symbol information"); | |
8e19ed76 | 18528 | } |
c906108c | 18529 | break; |
c906108c | 18530 | case DW_AT_external: |
48fbe735 | 18531 | is_external = DW_UNSND (&attr); |
c906108c SS |
18532 | break; |
18533 | case DW_AT_declaration: | |
48fbe735 | 18534 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18535 | break; |
18536 | case DW_AT_type: | |
48fbe735 | 18537 | has_type = 1; |
c906108c SS |
18538 | break; |
18539 | case DW_AT_abstract_origin: | |
18540 | case DW_AT_specification: | |
72bf9492 | 18541 | case DW_AT_extension: |
48fbe735 YQ |
18542 | has_specification = 1; |
18543 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18544 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18545 | || cu->per_cu->is_dwz); |
c906108c SS |
18546 | break; |
18547 | case DW_AT_sibling: | |
18548 | /* Ignore absolute siblings, they might point outside of | |
18549 | the current compile unit. */ | |
18550 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
18551 | complaint (&symfile_complaints, |
18552 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 18553 | else |
b9502d3f | 18554 | { |
48fbe735 | 18555 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18556 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18557 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18558 | |
18559 | if (sibling_ptr < info_ptr) | |
18560 | complaint (&symfile_complaints, | |
18561 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
18562 | else if (sibling_ptr > reader->buffer_end) |
18563 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 18564 | else |
48fbe735 | 18565 | sibling = sibling_ptr; |
b9502d3f | 18566 | } |
c906108c | 18567 | break; |
fa4028e9 | 18568 | case DW_AT_byte_size: |
48fbe735 | 18569 | has_byte_size = 1; |
fa4028e9 | 18570 | break; |
ff908ebf | 18571 | case DW_AT_const_value: |
48fbe735 | 18572 | has_const_value = 1; |
ff908ebf | 18573 | break; |
68511cec CES |
18574 | case DW_AT_calling_convention: |
18575 | /* DWARF doesn't provide a way to identify a program's source-level | |
18576 | entry point. DW_AT_calling_convention attributes are only meant | |
18577 | to describe functions' calling conventions. | |
18578 | ||
18579 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18580 | Fortran, and before DWARF 4 DW_CC_program was the only |
18581 | piece of debugging information whose definition refers to | |
18582 | a 'main program' at all, several compilers marked Fortran | |
18583 | main programs with DW_CC_program --- even when those | |
18584 | functions use the standard calling conventions. | |
18585 | ||
18586 | Although DWARF now specifies a way to provide this | |
18587 | information, we support this practice for backward | |
18588 | compatibility. */ | |
68511cec | 18589 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18590 | && cu->language == language_fortran) |
48fbe735 | 18591 | main_subprogram = 1; |
68511cec | 18592 | break; |
481860b3 GB |
18593 | case DW_AT_inline: |
18594 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18595 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18596 | may_be_inlined = 1; |
481860b3 | 18597 | break; |
95554aad TT |
18598 | |
18599 | case DW_AT_import: | |
48fbe735 | 18600 | if (tag == DW_TAG_imported_unit) |
36586728 | 18601 | { |
48fbe735 YQ |
18602 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
18603 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
18604 | || cu->per_cu->is_dwz); |
18605 | } | |
95554aad TT |
18606 | break; |
18607 | ||
0c1b455e | 18608 | case DW_AT_main_subprogram: |
48fbe735 | 18609 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18610 | break; |
18611 | ||
c906108c SS |
18612 | default: |
18613 | break; | |
18614 | } | |
18615 | } | |
18616 | ||
91da1414 | 18617 | if (high_pc_relative) |
48fbe735 | 18618 | highpc += lowpc; |
91da1414 | 18619 | |
9373cf26 JK |
18620 | if (has_low_pc_attr && has_high_pc_attr) |
18621 | { | |
18622 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18623 | eliminate duplicate copies of functions and vtables and such. | |
18624 | The linker will arbitrarily choose one and discard the others. | |
18625 | The AT_*_pc values for such functions refer to local labels in | |
18626 | these sections. If the section from that file was discarded, the | |
18627 | labels are not in the output, so the relocs get a value of 0. | |
18628 | If this is a discarded function, mark the pc bounds as invalid, | |
18629 | so that GDB will ignore it. */ | |
48fbe735 | 18630 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18631 | { |
48fbe735 | 18632 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18633 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
18634 | |
18635 | complaint (&symfile_complaints, | |
18636 | _("DW_AT_low_pc %s is zero " | |
9d8780f0 | 18637 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18638 | paddress (gdbarch, lowpc), |
18639 | sect_offset_str (sect_off), | |
9d8780f0 | 18640 | objfile_name (objfile)); |
9373cf26 JK |
18641 | } |
18642 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18643 | else if (lowpc >= highpc) |
9373cf26 | 18644 | { |
48fbe735 | 18645 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18646 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
18647 | |
18648 | complaint (&symfile_complaints, | |
18649 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
9d8780f0 | 18650 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18651 | paddress (gdbarch, lowpc), |
18652 | paddress (gdbarch, highpc), | |
18653 | sect_offset_str (sect_off), | |
9c541725 | 18654 | objfile_name (objfile)); |
9373cf26 JK |
18655 | } |
18656 | else | |
48fbe735 | 18657 | has_pc_info = 1; |
9373cf26 | 18658 | } |
85cbf3d3 | 18659 | |
c906108c SS |
18660 | return info_ptr; |
18661 | } | |
18662 | ||
72bf9492 DJ |
18663 | /* Find a cached partial DIE at OFFSET in CU. */ |
18664 | ||
d590ff25 YQ |
18665 | struct partial_die_info * |
18666 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18667 | { |
18668 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18669 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18670 | |
9a3c8263 | 18671 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18672 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18673 | to_underlying (sect_off))); |
72bf9492 | 18674 | |
72bf9492 DJ |
18675 | return lookup_die; |
18676 | } | |
18677 | ||
348e048f DE |
18678 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18679 | except in the case of .debug_types DIEs which do not reference | |
18680 | outside their CU (they do however referencing other types via | |
55f1336d | 18681 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
18682 | |
18683 | static struct partial_die_info * | |
9c541725 | 18684 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18685 | { |
518817b3 SM |
18686 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18687 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18688 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18689 | struct dwarf2_per_cu_data *per_cu = NULL; |
18690 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18691 | |
36586728 | 18692 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 18693 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 18694 | { |
d590ff25 | 18695 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18696 | if (pd != NULL) |
18697 | return pd; | |
0d99eb77 DE |
18698 | /* We missed recording what we needed. |
18699 | Load all dies and try again. */ | |
18700 | per_cu = cu->per_cu; | |
5afb4e99 | 18701 | } |
0d99eb77 DE |
18702 | else |
18703 | { | |
18704 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18705 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18706 | { |
9d8780f0 SM |
18707 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18708 | " external reference to offset %s [in module %s].\n"), | |
18709 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18710 | bfd_get_filename (objfile->obfd)); |
18711 | } | |
9c541725 | 18712 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18713 | dwarf2_per_objfile); |
72bf9492 | 18714 | |
0d99eb77 DE |
18715 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18716 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18717 | |
0d99eb77 | 18718 | per_cu->cu->last_used = 0; |
d590ff25 | 18719 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18720 | } |
5afb4e99 | 18721 | |
dee91e82 DE |
18722 | /* If we didn't find it, and not all dies have been loaded, |
18723 | load them all and try again. */ | |
18724 | ||
5afb4e99 DJ |
18725 | if (pd == NULL && per_cu->load_all_dies == 0) |
18726 | { | |
5afb4e99 | 18727 | per_cu->load_all_dies = 1; |
fd820528 DE |
18728 | |
18729 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18730 | THIS_CU->cu may already be in use. So we can't just free it and | |
18731 | replace its DIEs with the ones we read in. Instead, we leave those | |
18732 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18733 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18734 | set. */ | |
dee91e82 | 18735 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18736 | |
d590ff25 | 18737 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18738 | } |
18739 | ||
18740 | if (pd == NULL) | |
18741 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18742 | _("could not find partial DIE %s " |
3e43a32a | 18743 | "in cache [from module %s]\n"), |
9d8780f0 | 18744 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
5afb4e99 | 18745 | return pd; |
72bf9492 DJ |
18746 | } |
18747 | ||
abc72ce4 DE |
18748 | /* See if we can figure out if the class lives in a namespace. We do |
18749 | this by looking for a member function; its demangled name will | |
18750 | contain namespace info, if there is any. */ | |
18751 | ||
18752 | static void | |
18753 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18754 | struct dwarf2_cu *cu) | |
18755 | { | |
18756 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18757 | what template types look like, because the demangler | |
18758 | frequently doesn't give the same name as the debug info. We | |
18759 | could fix this by only using the demangled name to get the | |
18760 | prefix (but see comment in read_structure_type). */ | |
18761 | ||
18762 | struct partial_die_info *real_pdi; | |
18763 | struct partial_die_info *child_pdi; | |
18764 | ||
18765 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18766 | we should not do this. We'll prepend the parent's fully qualified | |
18767 | name when we create the partial symbol. */ | |
18768 | ||
18769 | real_pdi = struct_pdi; | |
18770 | while (real_pdi->has_specification) | |
36586728 TT |
18771 | real_pdi = find_partial_die (real_pdi->spec_offset, |
18772 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
18773 | |
18774 | if (real_pdi->die_parent != NULL) | |
18775 | return; | |
18776 | ||
18777 | for (child_pdi = struct_pdi->die_child; | |
18778 | child_pdi != NULL; | |
18779 | child_pdi = child_pdi->die_sibling) | |
18780 | { | |
18781 | if (child_pdi->tag == DW_TAG_subprogram | |
18782 | && child_pdi->linkage_name != NULL) | |
18783 | { | |
18784 | char *actual_class_name | |
18785 | = language_class_name_from_physname (cu->language_defn, | |
18786 | child_pdi->linkage_name); | |
18787 | if (actual_class_name != NULL) | |
18788 | { | |
518817b3 | 18789 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 18790 | struct_pdi->name |
224c3ddb | 18791 | = ((const char *) |
e3b94546 | 18792 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
18793 | actual_class_name, |
18794 | strlen (actual_class_name))); | |
abc72ce4 DE |
18795 | xfree (actual_class_name); |
18796 | } | |
18797 | break; | |
18798 | } | |
18799 | } | |
18800 | } | |
18801 | ||
52356b79 YQ |
18802 | void |
18803 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18804 | { |
abc72ce4 DE |
18805 | /* Once we've fixed up a die, there's no point in doing so again. |
18806 | This also avoids a memory leak if we were to call | |
18807 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18808 | if (fixup_called) |
abc72ce4 DE |
18809 | return; |
18810 | ||
72bf9492 DJ |
18811 | /* If we found a reference attribute and the DIE has no name, try |
18812 | to find a name in the referred to DIE. */ | |
18813 | ||
52356b79 | 18814 | if (name == NULL && has_specification) |
72bf9492 DJ |
18815 | { |
18816 | struct partial_die_info *spec_die; | |
72bf9492 | 18817 | |
52356b79 | 18818 | spec_die = find_partial_die (spec_offset, spec_is_dwz, cu); |
72bf9492 | 18819 | |
52356b79 | 18820 | spec_die->fixup (cu); |
72bf9492 DJ |
18821 | |
18822 | if (spec_die->name) | |
18823 | { | |
52356b79 | 18824 | name = spec_die->name; |
72bf9492 DJ |
18825 | |
18826 | /* Copy DW_AT_external attribute if it is set. */ | |
18827 | if (spec_die->is_external) | |
52356b79 | 18828 | is_external = spec_die->is_external; |
72bf9492 DJ |
18829 | } |
18830 | } | |
18831 | ||
18832 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 18833 | |
52356b79 YQ |
18834 | if (name == NULL && tag == DW_TAG_namespace) |
18835 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18836 | |
abc72ce4 DE |
18837 | /* If there is no parent die to provide a namespace, and there are |
18838 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18839 | name. */ |
abc72ce4 | 18840 | if (cu->language == language_cplus |
518817b3 SM |
18841 | && !VEC_empty (dwarf2_section_info_def, |
18842 | cu->per_cu->dwarf2_per_objfile->types) | |
52356b79 YQ |
18843 | && die_parent == NULL |
18844 | && has_children | |
18845 | && (tag == DW_TAG_class_type | |
18846 | || tag == DW_TAG_structure_type | |
18847 | || tag == DW_TAG_union_type)) | |
18848 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18849 | |
53832f31 TT |
18850 | /* GCC might emit a nameless struct or union that has a linkage |
18851 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18852 | if (name == NULL |
18853 | && (tag == DW_TAG_class_type | |
18854 | || tag == DW_TAG_interface_type | |
18855 | || tag == DW_TAG_structure_type | |
18856 | || tag == DW_TAG_union_type) | |
18857 | && linkage_name != NULL) | |
53832f31 TT |
18858 | { |
18859 | char *demangled; | |
18860 | ||
52356b79 | 18861 | demangled = gdb_demangle (linkage_name, DMGL_TYPES); |
53832f31 TT |
18862 | if (demangled) |
18863 | { | |
96408a79 SA |
18864 | const char *base; |
18865 | ||
18866 | /* Strip any leading namespaces/classes, keep only the base name. | |
18867 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
18868 | base = strrchr (demangled, ':'); | |
18869 | if (base && base > demangled && base[-1] == ':') | |
18870 | base++; | |
18871 | else | |
18872 | base = demangled; | |
18873 | ||
518817b3 | 18874 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
52356b79 | 18875 | name |
224c3ddb | 18876 | = ((const char *) |
e3b94546 | 18877 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 18878 | base, strlen (base))); |
53832f31 TT |
18879 | xfree (demangled); |
18880 | } | |
18881 | } | |
18882 | ||
52356b79 | 18883 | fixup_called = 1; |
72bf9492 DJ |
18884 | } |
18885 | ||
a8329558 | 18886 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18887 | |
d521ce57 | 18888 | static const gdb_byte * |
dee91e82 DE |
18889 | read_attribute_value (const struct die_reader_specs *reader, |
18890 | struct attribute *attr, unsigned form, | |
43988095 | 18891 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 18892 | { |
dee91e82 | 18893 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18894 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18895 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18896 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 18897 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 18898 | bfd *abfd = reader->abfd; |
e7c27a73 | 18899 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18900 | unsigned int bytes_read; |
18901 | struct dwarf_block *blk; | |
18902 | ||
aead7601 | 18903 | attr->form = (enum dwarf_form) form; |
a8329558 | 18904 | switch (form) |
c906108c | 18905 | { |
c906108c | 18906 | case DW_FORM_ref_addr: |
ae411497 | 18907 | if (cu->header.version == 2) |
4568ecf9 | 18908 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 18909 | else |
4568ecf9 DE |
18910 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
18911 | &cu->header, &bytes_read); | |
ae411497 TT |
18912 | info_ptr += bytes_read; |
18913 | break; | |
36586728 TT |
18914 | case DW_FORM_GNU_ref_alt: |
18915 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
18916 | info_ptr += bytes_read; | |
18917 | break; | |
ae411497 | 18918 | case DW_FORM_addr: |
e7c27a73 | 18919 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 18920 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 18921 | info_ptr += bytes_read; |
c906108c SS |
18922 | break; |
18923 | case DW_FORM_block2: | |
7b5a2f43 | 18924 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18925 | blk->size = read_2_bytes (abfd, info_ptr); |
18926 | info_ptr += 2; | |
18927 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18928 | info_ptr += blk->size; | |
18929 | DW_BLOCK (attr) = blk; | |
18930 | break; | |
18931 | case DW_FORM_block4: | |
7b5a2f43 | 18932 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18933 | blk->size = read_4_bytes (abfd, info_ptr); |
18934 | info_ptr += 4; | |
18935 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18936 | info_ptr += blk->size; | |
18937 | DW_BLOCK (attr) = blk; | |
18938 | break; | |
18939 | case DW_FORM_data2: | |
18940 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
18941 | info_ptr += 2; | |
18942 | break; | |
18943 | case DW_FORM_data4: | |
18944 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
18945 | info_ptr += 4; | |
18946 | break; | |
18947 | case DW_FORM_data8: | |
18948 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
18949 | info_ptr += 8; | |
18950 | break; | |
0224619f JK |
18951 | case DW_FORM_data16: |
18952 | blk = dwarf_alloc_block (cu); | |
18953 | blk->size = 16; | |
18954 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
18955 | info_ptr += 16; | |
18956 | DW_BLOCK (attr) = blk; | |
18957 | break; | |
2dc7f7b3 TT |
18958 | case DW_FORM_sec_offset: |
18959 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
18960 | info_ptr += bytes_read; | |
18961 | break; | |
c906108c | 18962 | case DW_FORM_string: |
9b1c24c8 | 18963 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 18964 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
18965 | info_ptr += bytes_read; |
18966 | break; | |
4bdf3d34 | 18967 | case DW_FORM_strp: |
36586728 TT |
18968 | if (!cu->per_cu->is_dwz) |
18969 | { | |
ed2dc618 SM |
18970 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
18971 | abfd, info_ptr, cu_header, | |
36586728 TT |
18972 | &bytes_read); |
18973 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18974 | info_ptr += bytes_read; | |
18975 | break; | |
18976 | } | |
18977 | /* FALLTHROUGH */ | |
43988095 JK |
18978 | case DW_FORM_line_strp: |
18979 | if (!cu->per_cu->is_dwz) | |
18980 | { | |
ed2dc618 SM |
18981 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
18982 | abfd, info_ptr, | |
43988095 JK |
18983 | cu_header, &bytes_read); |
18984 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18985 | info_ptr += bytes_read; | |
18986 | break; | |
18987 | } | |
18988 | /* FALLTHROUGH */ | |
36586728 TT |
18989 | case DW_FORM_GNU_strp_alt: |
18990 | { | |
ed2dc618 | 18991 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
18992 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
18993 | &bytes_read); | |
18994 | ||
ed2dc618 SM |
18995 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
18996 | dwz, str_offset); | |
36586728 TT |
18997 | DW_STRING_IS_CANONICAL (attr) = 0; |
18998 | info_ptr += bytes_read; | |
18999 | } | |
4bdf3d34 | 19000 | break; |
2dc7f7b3 | 19001 | case DW_FORM_exprloc: |
c906108c | 19002 | case DW_FORM_block: |
7b5a2f43 | 19003 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19004 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19005 | info_ptr += bytes_read; | |
19006 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19007 | info_ptr += blk->size; | |
19008 | DW_BLOCK (attr) = blk; | |
19009 | break; | |
19010 | case DW_FORM_block1: | |
7b5a2f43 | 19011 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19012 | blk->size = read_1_byte (abfd, info_ptr); |
19013 | info_ptr += 1; | |
19014 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19015 | info_ptr += blk->size; | |
19016 | DW_BLOCK (attr) = blk; | |
19017 | break; | |
19018 | case DW_FORM_data1: | |
19019 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19020 | info_ptr += 1; | |
19021 | break; | |
19022 | case DW_FORM_flag: | |
19023 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19024 | info_ptr += 1; | |
19025 | break; | |
2dc7f7b3 TT |
19026 | case DW_FORM_flag_present: |
19027 | DW_UNSND (attr) = 1; | |
19028 | break; | |
c906108c SS |
19029 | case DW_FORM_sdata: |
19030 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19031 | info_ptr += bytes_read; | |
19032 | break; | |
19033 | case DW_FORM_udata: | |
19034 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19035 | info_ptr += bytes_read; | |
19036 | break; | |
19037 | case DW_FORM_ref1: | |
9c541725 | 19038 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19039 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19040 | info_ptr += 1; |
19041 | break; | |
19042 | case DW_FORM_ref2: | |
9c541725 | 19043 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19044 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19045 | info_ptr += 2; |
19046 | break; | |
19047 | case DW_FORM_ref4: | |
9c541725 | 19048 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19049 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19050 | info_ptr += 4; |
19051 | break; | |
613e1657 | 19052 | case DW_FORM_ref8: |
9c541725 | 19053 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19054 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19055 | info_ptr += 8; |
19056 | break; | |
55f1336d | 19057 | case DW_FORM_ref_sig8: |
ac9ec31b | 19058 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19059 | info_ptr += 8; |
19060 | break; | |
c906108c | 19061 | case DW_FORM_ref_udata: |
9c541725 | 19062 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19063 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19064 | info_ptr += bytes_read; |
19065 | break; | |
c906108c | 19066 | case DW_FORM_indirect: |
a8329558 KW |
19067 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19068 | info_ptr += bytes_read; | |
43988095 JK |
19069 | if (form == DW_FORM_implicit_const) |
19070 | { | |
19071 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19072 | info_ptr += bytes_read; | |
19073 | } | |
19074 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
19075 | info_ptr); | |
19076 | break; | |
19077 | case DW_FORM_implicit_const: | |
19078 | DW_SND (attr) = implicit_const; | |
a8329558 | 19079 | break; |
3019eac3 DE |
19080 | case DW_FORM_GNU_addr_index: |
19081 | if (reader->dwo_file == NULL) | |
19082 | { | |
19083 | /* For now flag a hard error. | |
19084 | Later we can turn this into a complaint. */ | |
19085 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19086 | dwarf_form_name (form), | |
19087 | bfd_get_filename (abfd)); | |
19088 | } | |
19089 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
19090 | info_ptr += bytes_read; | |
19091 | break; | |
19092 | case DW_FORM_GNU_str_index: | |
19093 | if (reader->dwo_file == NULL) | |
19094 | { | |
19095 | /* For now flag a hard error. | |
19096 | Later we can turn this into a complaint if warranted. */ | |
19097 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19098 | dwarf_form_name (form), | |
19099 | bfd_get_filename (abfd)); | |
19100 | } | |
19101 | { | |
19102 | ULONGEST str_index = | |
19103 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19104 | ||
342587c4 | 19105 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
19106 | DW_STRING_IS_CANONICAL (attr) = 0; |
19107 | info_ptr += bytes_read; | |
19108 | } | |
19109 | break; | |
c906108c | 19110 | default: |
8a3fe4f8 | 19111 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19112 | dwarf_form_name (form), |
19113 | bfd_get_filename (abfd)); | |
c906108c | 19114 | } |
28e94949 | 19115 | |
36586728 | 19116 | /* Super hack. */ |
7771576e | 19117 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19118 | attr->form = DW_FORM_GNU_ref_alt; |
19119 | ||
28e94949 JB |
19120 | /* We have seen instances where the compiler tried to emit a byte |
19121 | size attribute of -1 which ended up being encoded as an unsigned | |
19122 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19123 | an object of this size seems pretty unlikely so we can relatively | |
19124 | safely treat these cases as if the size attribute was invalid and | |
19125 | treat them as zero by default. */ | |
19126 | if (attr->name == DW_AT_byte_size | |
19127 | && form == DW_FORM_data4 | |
19128 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19129 | { |
19130 | complaint | |
19131 | (&symfile_complaints, | |
43bbcdc2 PH |
19132 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
19133 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
19134 | DW_UNSND (attr) = 0; |
19135 | } | |
28e94949 | 19136 | |
c906108c SS |
19137 | return info_ptr; |
19138 | } | |
19139 | ||
a8329558 KW |
19140 | /* Read an attribute described by an abbreviated attribute. */ |
19141 | ||
d521ce57 | 19142 | static const gdb_byte * |
dee91e82 DE |
19143 | read_attribute (const struct die_reader_specs *reader, |
19144 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 19145 | const gdb_byte *info_ptr) |
a8329558 KW |
19146 | { |
19147 | attr->name = abbrev->name; | |
43988095 JK |
19148 | return read_attribute_value (reader, attr, abbrev->form, |
19149 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
19150 | } |
19151 | ||
0963b4bd | 19152 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19153 | |
19154 | static unsigned int | |
a1855c1d | 19155 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19156 | { |
fe1b8b76 | 19157 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19158 | } |
19159 | ||
19160 | static int | |
a1855c1d | 19161 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19162 | { |
fe1b8b76 | 19163 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19164 | } |
19165 | ||
19166 | static unsigned int | |
a1855c1d | 19167 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19168 | { |
fe1b8b76 | 19169 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19170 | } |
19171 | ||
21ae7a4d | 19172 | static int |
a1855c1d | 19173 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19174 | { |
19175 | return bfd_get_signed_16 (abfd, buf); | |
19176 | } | |
19177 | ||
c906108c | 19178 | static unsigned int |
a1855c1d | 19179 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19180 | { |
fe1b8b76 | 19181 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19182 | } |
19183 | ||
21ae7a4d | 19184 | static int |
a1855c1d | 19185 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19186 | { |
19187 | return bfd_get_signed_32 (abfd, buf); | |
19188 | } | |
19189 | ||
93311388 | 19190 | static ULONGEST |
a1855c1d | 19191 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19192 | { |
fe1b8b76 | 19193 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19194 | } |
19195 | ||
19196 | static CORE_ADDR | |
d521ce57 | 19197 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19198 | unsigned int *bytes_read) |
c906108c | 19199 | { |
e7c27a73 | 19200 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19201 | CORE_ADDR retval = 0; |
19202 | ||
107d2387 | 19203 | if (cu_header->signed_addr_p) |
c906108c | 19204 | { |
107d2387 AC |
19205 | switch (cu_header->addr_size) |
19206 | { | |
19207 | case 2: | |
fe1b8b76 | 19208 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19209 | break; |
19210 | case 4: | |
fe1b8b76 | 19211 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19212 | break; |
19213 | case 8: | |
fe1b8b76 | 19214 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19215 | break; |
19216 | default: | |
8e65ff28 | 19217 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19218 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19219 | bfd_get_filename (abfd)); |
107d2387 AC |
19220 | } |
19221 | } | |
19222 | else | |
19223 | { | |
19224 | switch (cu_header->addr_size) | |
19225 | { | |
19226 | case 2: | |
fe1b8b76 | 19227 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19228 | break; |
19229 | case 4: | |
fe1b8b76 | 19230 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19231 | break; |
19232 | case 8: | |
fe1b8b76 | 19233 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19234 | break; |
19235 | default: | |
8e65ff28 | 19236 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19237 | _("read_address: bad switch, " |
19238 | "unsigned [in module %s]"), | |
659b0389 | 19239 | bfd_get_filename (abfd)); |
107d2387 | 19240 | } |
c906108c | 19241 | } |
64367e0a | 19242 | |
107d2387 AC |
19243 | *bytes_read = cu_header->addr_size; |
19244 | return retval; | |
c906108c SS |
19245 | } |
19246 | ||
f7ef9339 | 19247 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19248 | specification allows the initial length to take up either 4 bytes |
19249 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19250 | bytes describe the length and all offsets will be 8 bytes in length | |
19251 | instead of 4. | |
19252 | ||
f7ef9339 KB |
19253 | An older, non-standard 64-bit format is also handled by this |
19254 | function. The older format in question stores the initial length | |
19255 | as an 8-byte quantity without an escape value. Lengths greater | |
19256 | than 2^32 aren't very common which means that the initial 4 bytes | |
19257 | is almost always zero. Since a length value of zero doesn't make | |
19258 | sense for the 32-bit format, this initial zero can be considered to | |
19259 | be an escape value which indicates the presence of the older 64-bit | |
19260 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19261 | greater than 4GB. If it becomes necessary to handle lengths |
19262 | somewhat larger than 4GB, we could allow other small values (such | |
19263 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19264 | escape values indicating the presence of the old format. | |
f7ef9339 | 19265 | |
917c78fc MK |
19266 | The value returned via bytes_read should be used to increment the |
19267 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19268 | |
613e1657 KB |
19269 | [ Note: read_initial_length() and read_offset() are based on the |
19270 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19271 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19272 | from: |
19273 | ||
f7ef9339 | 19274 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19275 | |
613e1657 KB |
19276 | This document is only a draft and is subject to change. (So beware.) |
19277 | ||
f7ef9339 | 19278 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19279 | determined empirically by examining 64-bit ELF files produced by |
19280 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19281 | |
19282 | - Kevin, July 16, 2002 | |
613e1657 KB |
19283 | ] */ |
19284 | ||
19285 | static LONGEST | |
d521ce57 | 19286 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19287 | { |
fe1b8b76 | 19288 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19289 | |
dd373385 | 19290 | if (length == 0xffffffff) |
613e1657 | 19291 | { |
fe1b8b76 | 19292 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19293 | *bytes_read = 12; |
613e1657 | 19294 | } |
dd373385 | 19295 | else if (length == 0) |
f7ef9339 | 19296 | { |
dd373385 | 19297 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19298 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19299 | *bytes_read = 8; |
f7ef9339 | 19300 | } |
613e1657 KB |
19301 | else |
19302 | { | |
19303 | *bytes_read = 4; | |
613e1657 KB |
19304 | } |
19305 | ||
c764a876 DE |
19306 | return length; |
19307 | } | |
dd373385 | 19308 | |
c764a876 DE |
19309 | /* Cover function for read_initial_length. |
19310 | Returns the length of the object at BUF, and stores the size of the | |
19311 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19312 | *OFFSET_SIZE. | |
19313 | If the initial length size is not equivalent to that specified in | |
19314 | CU_HEADER then issue a complaint. | |
19315 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19316 | |
c764a876 | 19317 | static LONGEST |
d521ce57 | 19318 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19319 | const struct comp_unit_head *cu_header, |
19320 | unsigned int *bytes_read, | |
19321 | unsigned int *offset_size) | |
19322 | { | |
19323 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19324 | ||
19325 | gdb_assert (cu_header->initial_length_size == 4 | |
19326 | || cu_header->initial_length_size == 8 | |
19327 | || cu_header->initial_length_size == 12); | |
19328 | ||
19329 | if (cu_header->initial_length_size != *bytes_read) | |
19330 | complaint (&symfile_complaints, | |
19331 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 19332 | |
c764a876 | 19333 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19334 | return length; |
613e1657 KB |
19335 | } |
19336 | ||
19337 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19338 | given by cu_header->offset_size. */ |
613e1657 KB |
19339 | |
19340 | static LONGEST | |
d521ce57 TT |
19341 | read_offset (bfd *abfd, const gdb_byte *buf, |
19342 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19343 | unsigned int *bytes_read) |
c764a876 DE |
19344 | { |
19345 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19346 | |
c764a876 DE |
19347 | *bytes_read = cu_header->offset_size; |
19348 | return offset; | |
19349 | } | |
19350 | ||
19351 | /* Read an offset from the data stream. */ | |
19352 | ||
19353 | static LONGEST | |
d521ce57 | 19354 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19355 | { |
19356 | LONGEST retval = 0; | |
19357 | ||
c764a876 | 19358 | switch (offset_size) |
613e1657 KB |
19359 | { |
19360 | case 4: | |
fe1b8b76 | 19361 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19362 | break; |
19363 | case 8: | |
fe1b8b76 | 19364 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19365 | break; |
19366 | default: | |
8e65ff28 | 19367 | internal_error (__FILE__, __LINE__, |
c764a876 | 19368 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19369 | bfd_get_filename (abfd)); |
613e1657 KB |
19370 | } |
19371 | ||
917c78fc | 19372 | return retval; |
613e1657 KB |
19373 | } |
19374 | ||
d521ce57 TT |
19375 | static const gdb_byte * |
19376 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19377 | { |
19378 | /* If the size of a host char is 8 bits, we can return a pointer | |
19379 | to the buffer, otherwise we have to copy the data to a buffer | |
19380 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19381 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19382 | return buf; |
c906108c SS |
19383 | } |
19384 | ||
d521ce57 TT |
19385 | static const char * |
19386 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19387 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19388 | { |
19389 | /* If the size of a host char is 8 bits, we can return a pointer | |
19390 | to the string, otherwise we have to copy the string to a buffer | |
19391 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19392 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19393 | if (*buf == '\0') |
19394 | { | |
19395 | *bytes_read_ptr = 1; | |
19396 | return NULL; | |
19397 | } | |
d521ce57 TT |
19398 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19399 | return (const char *) buf; | |
4bdf3d34 JJ |
19400 | } |
19401 | ||
43988095 JK |
19402 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19403 | reporting strings FORM_NAME and SECT_NAME. */ | |
19404 | ||
d521ce57 | 19405 | static const char * |
ed2dc618 SM |
19406 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19407 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19408 | struct dwarf2_section_info *sect, |
19409 | const char *form_name, | |
19410 | const char *sect_name) | |
19411 | { | |
ed2dc618 | 19412 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19413 | if (sect->buffer == NULL) |
19414 | error (_("%s used without %s section [in module %s]"), | |
19415 | form_name, sect_name, bfd_get_filename (abfd)); | |
19416 | if (str_offset >= sect->size) | |
19417 | error (_("%s pointing outside of %s section [in module %s]"), | |
19418 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19419 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19420 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19421 | return NULL; |
43988095 JK |
19422 | return (const char *) (sect->buffer + str_offset); |
19423 | } | |
19424 | ||
19425 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19426 | ||
19427 | static const char * | |
ed2dc618 SM |
19428 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19429 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19430 | { |
ed2dc618 SM |
19431 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19432 | abfd, str_offset, | |
43988095 JK |
19433 | &dwarf2_per_objfile->str, |
19434 | "DW_FORM_strp", ".debug_str"); | |
19435 | } | |
19436 | ||
19437 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19438 | ||
19439 | static const char * | |
ed2dc618 SM |
19440 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19441 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19442 | { |
ed2dc618 SM |
19443 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19444 | abfd, str_offset, | |
43988095 JK |
19445 | &dwarf2_per_objfile->line_str, |
19446 | "DW_FORM_line_strp", | |
19447 | ".debug_line_str"); | |
c906108c SS |
19448 | } |
19449 | ||
36586728 TT |
19450 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19451 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19452 | the string consists of a single NUL byte, return NULL; otherwise | |
19453 | return a pointer to the string. */ | |
19454 | ||
d521ce57 | 19455 | static const char * |
ed2dc618 SM |
19456 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19457 | LONGEST str_offset) | |
36586728 | 19458 | { |
ed2dc618 | 19459 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
19460 | |
19461 | if (dwz->str.buffer == NULL) | |
19462 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19463 | "section [in module %s]"), | |
19464 | bfd_get_filename (dwz->dwz_bfd)); | |
19465 | if (str_offset >= dwz->str.size) | |
19466 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19467 | ".debug_str section [in module %s]"), | |
19468 | bfd_get_filename (dwz->dwz_bfd)); | |
19469 | gdb_assert (HOST_CHAR_BIT == 8); | |
19470 | if (dwz->str.buffer[str_offset] == '\0') | |
19471 | return NULL; | |
d521ce57 | 19472 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19473 | } |
19474 | ||
43988095 JK |
19475 | /* Return pointer to string at .debug_str offset as read from BUF. |
19476 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19477 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19478 | ||
d521ce57 | 19479 | static const char * |
ed2dc618 SM |
19480 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19481 | const gdb_byte *buf, | |
cf2c3c16 TT |
19482 | const struct comp_unit_head *cu_header, |
19483 | unsigned int *bytes_read_ptr) | |
19484 | { | |
19485 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19486 | ||
ed2dc618 | 19487 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19488 | } |
19489 | ||
43988095 JK |
19490 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19491 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19492 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19493 | ||
19494 | static const char * | |
ed2dc618 SM |
19495 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19496 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19497 | const struct comp_unit_head *cu_header, |
19498 | unsigned int *bytes_read_ptr) | |
19499 | { | |
19500 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19501 | ||
ed2dc618 SM |
19502 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19503 | str_offset); | |
43988095 JK |
19504 | } |
19505 | ||
19506 | ULONGEST | |
d521ce57 | 19507 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 19508 | unsigned int *bytes_read_ptr) |
c906108c | 19509 | { |
12df843f | 19510 | ULONGEST result; |
ce5d95e1 | 19511 | unsigned int num_read; |
870f88f7 | 19512 | int shift; |
c906108c SS |
19513 | unsigned char byte; |
19514 | ||
19515 | result = 0; | |
19516 | shift = 0; | |
19517 | num_read = 0; | |
c906108c SS |
19518 | while (1) |
19519 | { | |
fe1b8b76 | 19520 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19521 | buf++; |
19522 | num_read++; | |
12df843f | 19523 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19524 | if ((byte & 128) == 0) |
19525 | { | |
19526 | break; | |
19527 | } | |
19528 | shift += 7; | |
19529 | } | |
19530 | *bytes_read_ptr = num_read; | |
19531 | return result; | |
19532 | } | |
19533 | ||
12df843f | 19534 | static LONGEST |
d521ce57 TT |
19535 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
19536 | unsigned int *bytes_read_ptr) | |
c906108c | 19537 | { |
12df843f | 19538 | LONGEST result; |
870f88f7 | 19539 | int shift, num_read; |
c906108c SS |
19540 | unsigned char byte; |
19541 | ||
19542 | result = 0; | |
19543 | shift = 0; | |
c906108c | 19544 | num_read = 0; |
c906108c SS |
19545 | while (1) |
19546 | { | |
fe1b8b76 | 19547 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19548 | buf++; |
19549 | num_read++; | |
12df843f | 19550 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
19551 | shift += 7; |
19552 | if ((byte & 128) == 0) | |
19553 | { | |
19554 | break; | |
19555 | } | |
19556 | } | |
77e0b926 | 19557 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 19558 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
19559 | *bytes_read_ptr = num_read; |
19560 | return result; | |
19561 | } | |
19562 | ||
3019eac3 DE |
19563 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
19564 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
19565 | ADDR_SIZE is the size of addresses from the CU header. */ | |
19566 | ||
19567 | static CORE_ADDR | |
ed2dc618 SM |
19568 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19569 | unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
3019eac3 DE |
19570 | { |
19571 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19572 | bfd *abfd = objfile->obfd; | |
19573 | const gdb_byte *info_ptr; | |
19574 | ||
19575 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
19576 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
19577 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19578 | objfile_name (objfile)); |
3019eac3 DE |
19579 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
19580 | error (_("DW_FORM_addr_index pointing outside of " | |
19581 | ".debug_addr section [in module %s]"), | |
4262abfb | 19582 | objfile_name (objfile)); |
3019eac3 DE |
19583 | info_ptr = (dwarf2_per_objfile->addr.buffer |
19584 | + addr_base + addr_index * addr_size); | |
19585 | if (addr_size == 4) | |
19586 | return bfd_get_32 (abfd, info_ptr); | |
19587 | else | |
19588 | return bfd_get_64 (abfd, info_ptr); | |
19589 | } | |
19590 | ||
19591 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19592 | ||
19593 | static CORE_ADDR | |
19594 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19595 | { | |
518817b3 SM |
19596 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
19597 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
19598 | } |
19599 | ||
19600 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19601 | ||
19602 | static CORE_ADDR | |
d521ce57 | 19603 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19604 | unsigned int *bytes_read) |
19605 | { | |
518817b3 | 19606 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
19607 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19608 | ||
19609 | return read_addr_index (cu, addr_index); | |
19610 | } | |
19611 | ||
19612 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
19613 | back to dwarf2_read_addr_index. */ | |
19614 | ||
19615 | struct dwarf2_read_addr_index_data | |
19616 | { | |
19617 | ULONGEST addr_base; | |
19618 | int addr_size; | |
19619 | }; | |
19620 | ||
19621 | /* die_reader_func for dwarf2_read_addr_index. */ | |
19622 | ||
19623 | static void | |
19624 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 19625 | const gdb_byte *info_ptr, |
3019eac3 DE |
19626 | struct die_info *comp_unit_die, |
19627 | int has_children, | |
19628 | void *data) | |
19629 | { | |
19630 | struct dwarf2_cu *cu = reader->cu; | |
19631 | struct dwarf2_read_addr_index_data *aidata = | |
19632 | (struct dwarf2_read_addr_index_data *) data; | |
19633 | ||
19634 | aidata->addr_base = cu->addr_base; | |
19635 | aidata->addr_size = cu->header.addr_size; | |
19636 | } | |
19637 | ||
19638 | /* Given an index in .debug_addr, fetch the value. | |
19639 | NOTE: This can be called during dwarf expression evaluation, | |
19640 | long after the debug information has been read, and thus per_cu->cu | |
19641 | may no longer exist. */ | |
19642 | ||
19643 | CORE_ADDR | |
19644 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
19645 | unsigned int addr_index) | |
19646 | { | |
ed2dc618 | 19647 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 DE |
19648 | struct dwarf2_cu *cu = per_cu->cu; |
19649 | ULONGEST addr_base; | |
19650 | int addr_size; | |
19651 | ||
3019eac3 DE |
19652 | /* We need addr_base and addr_size. |
19653 | If we don't have PER_CU->cu, we have to get it. | |
19654 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19655 | which at this point doesn't seem justified: it's not clear how frequently | |
19656 | it would get used and it would increase the size of every PER_CU. | |
19657 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19658 | so we're not in uncharted territory here. | |
19659 | Alas we need to be a bit more complicated as addr_base is contained | |
19660 | in the DIE. | |
19661 | ||
19662 | We don't need to read the entire CU(/TU). | |
19663 | We just need the header and top level die. | |
a1b64ce1 | 19664 | |
3019eac3 | 19665 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19666 | For now we skip this optimization. */ |
3019eac3 DE |
19667 | |
19668 | if (cu != NULL) | |
19669 | { | |
19670 | addr_base = cu->addr_base; | |
19671 | addr_size = cu->header.addr_size; | |
19672 | } | |
19673 | else | |
19674 | { | |
19675 | struct dwarf2_read_addr_index_data aidata; | |
19676 | ||
a1b64ce1 DE |
19677 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
19678 | we need addr_base. */ | |
19679 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
19680 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
19681 | addr_base = aidata.addr_base; |
19682 | addr_size = aidata.addr_size; | |
19683 | } | |
19684 | ||
ed2dc618 SM |
19685 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19686 | addr_size); | |
3019eac3 DE |
19687 | } |
19688 | ||
57d63ce2 DE |
19689 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
19690 | This is only used by the Fission support. */ | |
3019eac3 | 19691 | |
d521ce57 | 19692 | static const char * |
342587c4 | 19693 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 | 19694 | { |
ed2dc618 | 19695 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19696 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19697 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19698 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19699 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19700 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
19701 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
19702 | struct dwarf2_section_info *str_offsets_section = | |
19703 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 19704 | const gdb_byte *info_ptr; |
3019eac3 | 19705 | ULONGEST str_offset; |
57d63ce2 | 19706 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 19707 | |
73869dc2 DE |
19708 | dwarf2_read_section (objfile, str_section); |
19709 | dwarf2_read_section (objfile, str_offsets_section); | |
19710 | if (str_section->buffer == NULL) | |
57d63ce2 | 19711 | error (_("%s used without .debug_str.dwo section" |
9d8780f0 SM |
19712 | " in CU at offset %s [in module %s]"), |
19713 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19714 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 19715 | error (_("%s used without .debug_str_offsets.dwo section" |
9d8780f0 SM |
19716 | " in CU at offset %s [in module %s]"), |
19717 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19718 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 19719 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9d8780f0 SM |
19720 | " section in CU at offset %s [in module %s]"), |
19721 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19722 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
19723 | + str_index * cu->header.offset_size); |
19724 | if (cu->header.offset_size == 4) | |
19725 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19726 | else | |
19727 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19728 | if (str_offset >= str_section->size) |
57d63ce2 | 19729 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19730 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19731 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19732 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19733 | } |
19734 | ||
3019eac3 DE |
19735 | /* Return the length of an LEB128 number in BUF. */ |
19736 | ||
19737 | static int | |
19738 | leb128_size (const gdb_byte *buf) | |
19739 | { | |
19740 | const gdb_byte *begin = buf; | |
19741 | gdb_byte byte; | |
19742 | ||
19743 | while (1) | |
19744 | { | |
19745 | byte = *buf++; | |
19746 | if ((byte & 128) == 0) | |
19747 | return buf - begin; | |
19748 | } | |
19749 | } | |
19750 | ||
c906108c | 19751 | static void |
e142c38c | 19752 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19753 | { |
19754 | switch (lang) | |
19755 | { | |
19756 | case DW_LANG_C89: | |
76bee0cc | 19757 | case DW_LANG_C99: |
0cfd832f | 19758 | case DW_LANG_C11: |
c906108c | 19759 | case DW_LANG_C: |
d1be3247 | 19760 | case DW_LANG_UPC: |
e142c38c | 19761 | cu->language = language_c; |
c906108c | 19762 | break; |
9c37b5ae | 19763 | case DW_LANG_Java: |
c906108c | 19764 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19765 | case DW_LANG_C_plus_plus_11: |
19766 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19767 | cu->language = language_cplus; |
c906108c | 19768 | break; |
6aecb9c2 JB |
19769 | case DW_LANG_D: |
19770 | cu->language = language_d; | |
19771 | break; | |
c906108c SS |
19772 | case DW_LANG_Fortran77: |
19773 | case DW_LANG_Fortran90: | |
b21b22e0 | 19774 | case DW_LANG_Fortran95: |
f7de9aab MW |
19775 | case DW_LANG_Fortran03: |
19776 | case DW_LANG_Fortran08: | |
e142c38c | 19777 | cu->language = language_fortran; |
c906108c | 19778 | break; |
a766d390 DE |
19779 | case DW_LANG_Go: |
19780 | cu->language = language_go; | |
19781 | break; | |
c906108c | 19782 | case DW_LANG_Mips_Assembler: |
e142c38c | 19783 | cu->language = language_asm; |
c906108c SS |
19784 | break; |
19785 | case DW_LANG_Ada83: | |
8aaf0b47 | 19786 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19787 | cu->language = language_ada; |
19788 | break; | |
72019c9c GM |
19789 | case DW_LANG_Modula2: |
19790 | cu->language = language_m2; | |
19791 | break; | |
fe8e67fd PM |
19792 | case DW_LANG_Pascal83: |
19793 | cu->language = language_pascal; | |
19794 | break; | |
22566fbd DJ |
19795 | case DW_LANG_ObjC: |
19796 | cu->language = language_objc; | |
19797 | break; | |
c44af4eb TT |
19798 | case DW_LANG_Rust: |
19799 | case DW_LANG_Rust_old: | |
19800 | cu->language = language_rust; | |
19801 | break; | |
c906108c SS |
19802 | case DW_LANG_Cobol74: |
19803 | case DW_LANG_Cobol85: | |
c906108c | 19804 | default: |
e142c38c | 19805 | cu->language = language_minimal; |
c906108c SS |
19806 | break; |
19807 | } | |
e142c38c | 19808 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19809 | } |
19810 | ||
19811 | /* Return the named attribute or NULL if not there. */ | |
19812 | ||
19813 | static struct attribute * | |
e142c38c | 19814 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19815 | { |
a48e046c | 19816 | for (;;) |
c906108c | 19817 | { |
a48e046c TT |
19818 | unsigned int i; |
19819 | struct attribute *spec = NULL; | |
19820 | ||
19821 | for (i = 0; i < die->num_attrs; ++i) | |
19822 | { | |
19823 | if (die->attrs[i].name == name) | |
19824 | return &die->attrs[i]; | |
19825 | if (die->attrs[i].name == DW_AT_specification | |
19826 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19827 | spec = &die->attrs[i]; | |
19828 | } | |
19829 | ||
19830 | if (!spec) | |
19831 | break; | |
c906108c | 19832 | |
f2f0e013 | 19833 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19834 | } |
c5aa993b | 19835 | |
c906108c SS |
19836 | return NULL; |
19837 | } | |
19838 | ||
348e048f DE |
19839 | /* Return the named attribute or NULL if not there, |
19840 | but do not follow DW_AT_specification, etc. | |
19841 | This is for use in contexts where we're reading .debug_types dies. | |
19842 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
19843 | back up the chain, and we want to go down. */ | |
19844 | ||
19845 | static struct attribute * | |
45e58e77 | 19846 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
19847 | { |
19848 | unsigned int i; | |
19849 | ||
19850 | for (i = 0; i < die->num_attrs; ++i) | |
19851 | if (die->attrs[i].name == name) | |
19852 | return &die->attrs[i]; | |
19853 | ||
19854 | return NULL; | |
19855 | } | |
19856 | ||
7d45c7c3 KB |
19857 | /* Return the string associated with a string-typed attribute, or NULL if it |
19858 | is either not found or is of an incorrect type. */ | |
19859 | ||
19860 | static const char * | |
19861 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19862 | { | |
19863 | struct attribute *attr; | |
19864 | const char *str = NULL; | |
19865 | ||
19866 | attr = dwarf2_attr (die, name, cu); | |
19867 | ||
19868 | if (attr != NULL) | |
19869 | { | |
43988095 | 19870 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 L |
19871 | || attr->form == DW_FORM_string |
19872 | || attr->form == DW_FORM_GNU_str_index | |
16eb6b2d | 19873 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19874 | str = DW_STRING (attr); |
19875 | else | |
19876 | complaint (&symfile_complaints, | |
19877 | _("string type expected for attribute %s for " | |
9d8780f0 SM |
19878 | "DIE at %s in module %s"), |
19879 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 19880 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
19881 | } |
19882 | ||
19883 | return str; | |
19884 | } | |
19885 | ||
05cf31d1 JB |
19886 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19887 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19888 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19889 | |
19890 | static int | |
19891 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19892 | { | |
19893 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19894 | ||
19895 | return (attr && DW_UNSND (attr)); | |
19896 | } | |
19897 | ||
3ca72b44 | 19898 | static int |
e142c38c | 19899 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19900 | { |
05cf31d1 JB |
19901 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19902 | which value is non-zero. However, we have to be careful with | |
19903 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19904 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19905 | end up accidently finding a declaration attribute that belongs | |
19906 | to a different DIE referenced by the specification attribute, | |
19907 | even though the given DIE does not have a declaration attribute. */ | |
19908 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19909 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19910 | } |
19911 | ||
63d06c5c | 19912 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19913 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19914 | containing the return value on output. If there is no |
19915 | specification, but there is an abstract origin, that is | |
19916 | returned. */ | |
63d06c5c DC |
19917 | |
19918 | static struct die_info * | |
f2f0e013 | 19919 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19920 | { |
f2f0e013 DJ |
19921 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19922 | *spec_cu); | |
63d06c5c | 19923 | |
edb3359d DJ |
19924 | if (spec_attr == NULL) |
19925 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19926 | ||
63d06c5c DC |
19927 | if (spec_attr == NULL) |
19928 | return NULL; | |
19929 | else | |
f2f0e013 | 19930 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19931 | } |
c906108c | 19932 | |
527f3840 JK |
19933 | /* Stub for free_line_header to match void * callback types. */ |
19934 | ||
19935 | static void | |
19936 | free_line_header_voidp (void *arg) | |
19937 | { | |
9a3c8263 | 19938 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19939 | |
fff8551c | 19940 | delete lh; |
527f3840 JK |
19941 | } |
19942 | ||
fff8551c PA |
19943 | void |
19944 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 19945 | { |
27e0867f | 19946 | if (dwarf_line_debug >= 2) |
fff8551c PA |
19947 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
19948 | include_dirs.size () + 1, include_dir); | |
27e0867f | 19949 | |
fff8551c | 19950 | include_dirs.push_back (include_dir); |
debd256d | 19951 | } |
6e70227d | 19952 | |
fff8551c PA |
19953 | void |
19954 | line_header::add_file_name (const char *name, | |
ecfb656c | 19955 | dir_index d_index, |
fff8551c PA |
19956 | unsigned int mod_time, |
19957 | unsigned int length) | |
debd256d | 19958 | { |
27e0867f DE |
19959 | if (dwarf_line_debug >= 2) |
19960 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 19961 | (unsigned) file_names.size () + 1, name); |
27e0867f | 19962 | |
ecfb656c | 19963 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 19964 | } |
6e70227d | 19965 | |
83769d0b | 19966 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19967 | |
19968 | static struct dwarf2_section_info * | |
19969 | get_debug_line_section (struct dwarf2_cu *cu) | |
19970 | { | |
19971 | struct dwarf2_section_info *section; | |
518817b3 SM |
19972 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19973 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
19974 | |
19975 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19976 | DWO file. */ | |
19977 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19978 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19979 | else if (cu->per_cu->is_dwz) | |
19980 | { | |
ed2dc618 | 19981 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19982 | |
19983 | section = &dwz->line; | |
19984 | } | |
19985 | else | |
19986 | section = &dwarf2_per_objfile->line; | |
19987 | ||
19988 | return section; | |
19989 | } | |
19990 | ||
43988095 JK |
19991 | /* Read directory or file name entry format, starting with byte of |
19992 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
19993 | entries count and the entries themselves in the described entry | |
19994 | format. */ | |
19995 | ||
19996 | static void | |
ed2dc618 SM |
19997 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19998 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
19999 | struct line_header *lh, |
20000 | const struct comp_unit_head *cu_header, | |
20001 | void (*callback) (struct line_header *lh, | |
20002 | const char *name, | |
ecfb656c | 20003 | dir_index d_index, |
43988095 JK |
20004 | unsigned int mod_time, |
20005 | unsigned int length)) | |
20006 | { | |
20007 | gdb_byte format_count, formati; | |
20008 | ULONGEST data_count, datai; | |
20009 | const gdb_byte *buf = *bufp; | |
20010 | const gdb_byte *format_header_data; | |
43988095 JK |
20011 | unsigned int bytes_read; |
20012 | ||
20013 | format_count = read_1_byte (abfd, buf); | |
20014 | buf += 1; | |
20015 | format_header_data = buf; | |
20016 | for (formati = 0; formati < format_count; formati++) | |
20017 | { | |
20018 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20019 | buf += bytes_read; | |
20020 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20021 | buf += bytes_read; | |
20022 | } | |
20023 | ||
20024 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20025 | buf += bytes_read; | |
20026 | for (datai = 0; datai < data_count; datai++) | |
20027 | { | |
20028 | const gdb_byte *format = format_header_data; | |
20029 | struct file_entry fe; | |
20030 | ||
43988095 JK |
20031 | for (formati = 0; formati < format_count; formati++) |
20032 | { | |
ecfb656c | 20033 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20034 | format += bytes_read; |
43988095 | 20035 | |
ecfb656c | 20036 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20037 | format += bytes_read; |
ecfb656c PA |
20038 | |
20039 | gdb::optional<const char *> string; | |
20040 | gdb::optional<unsigned int> uint; | |
20041 | ||
43988095 JK |
20042 | switch (form) |
20043 | { | |
20044 | case DW_FORM_string: | |
ecfb656c | 20045 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20046 | buf += bytes_read; |
20047 | break; | |
20048 | ||
20049 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20050 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20051 | abfd, buf, | |
ecfb656c PA |
20052 | cu_header, |
20053 | &bytes_read)); | |
43988095 JK |
20054 | buf += bytes_read; |
20055 | break; | |
20056 | ||
20057 | case DW_FORM_data1: | |
ecfb656c | 20058 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20059 | buf += 1; |
20060 | break; | |
20061 | ||
20062 | case DW_FORM_data2: | |
ecfb656c | 20063 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20064 | buf += 2; |
20065 | break; | |
20066 | ||
20067 | case DW_FORM_data4: | |
ecfb656c | 20068 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20069 | buf += 4; |
20070 | break; | |
20071 | ||
20072 | case DW_FORM_data8: | |
ecfb656c | 20073 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20074 | buf += 8; |
20075 | break; | |
20076 | ||
20077 | case DW_FORM_udata: | |
ecfb656c | 20078 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20079 | buf += bytes_read; |
20080 | break; | |
20081 | ||
20082 | case DW_FORM_block: | |
20083 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20084 | current GDB. */ | |
20085 | break; | |
20086 | } | |
ecfb656c PA |
20087 | |
20088 | switch (content_type) | |
20089 | { | |
20090 | case DW_LNCT_path: | |
20091 | if (string.has_value ()) | |
20092 | fe.name = *string; | |
20093 | break; | |
20094 | case DW_LNCT_directory_index: | |
20095 | if (uint.has_value ()) | |
20096 | fe.d_index = (dir_index) *uint; | |
20097 | break; | |
20098 | case DW_LNCT_timestamp: | |
20099 | if (uint.has_value ()) | |
20100 | fe.mod_time = *uint; | |
20101 | break; | |
20102 | case DW_LNCT_size: | |
20103 | if (uint.has_value ()) | |
20104 | fe.length = *uint; | |
20105 | break; | |
20106 | case DW_LNCT_MD5: | |
20107 | break; | |
20108 | default: | |
20109 | complaint (&symfile_complaints, | |
20110 | _("Unknown format content type %s"), | |
20111 | pulongest (content_type)); | |
20112 | } | |
43988095 JK |
20113 | } |
20114 | ||
ecfb656c | 20115 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20116 | } |
20117 | ||
20118 | *bufp = buf; | |
20119 | } | |
20120 | ||
debd256d | 20121 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20122 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20123 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20124 | Returns NULL if there is a problem reading the header, e.g., if it |
20125 | has a version we don't understand. | |
debd256d JB |
20126 | |
20127 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20128 | the returned object point into the dwarf line section buffer, |
20129 | and must not be freed. */ | |
ae2de4f8 | 20130 | |
fff8551c | 20131 | static line_header_up |
9c541725 | 20132 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20133 | { |
d521ce57 | 20134 | const gdb_byte *line_ptr; |
c764a876 | 20135 | unsigned int bytes_read, offset_size; |
debd256d | 20136 | int i; |
d521ce57 | 20137 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20138 | struct dwarf2_section_info *section; |
20139 | bfd *abfd; | |
518817b3 SM |
20140 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20141 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20142 | |
36586728 | 20143 | section = get_debug_line_section (cu); |
3019eac3 DE |
20144 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20145 | if (section->buffer == NULL) | |
debd256d | 20146 | { |
3019eac3 DE |
20147 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
20148 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
20149 | else | |
20150 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
20151 | return 0; |
20152 | } | |
20153 | ||
fceca515 DE |
20154 | /* We can't do this until we know the section is non-empty. |
20155 | Only then do we know we have such a section. */ | |
a32a8923 | 20156 | abfd = get_section_bfd_owner (section); |
fceca515 | 20157 | |
a738430d MK |
20158 | /* Make sure that at least there's room for the total_length field. |
20159 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20160 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20161 | { |
4d3c2250 | 20162 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20163 | return 0; |
20164 | } | |
20165 | ||
fff8551c | 20166 | line_header_up lh (new line_header ()); |
debd256d | 20167 | |
9c541725 | 20168 | lh->sect_off = sect_off; |
527f3840 JK |
20169 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20170 | ||
9c541725 | 20171 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20172 | |
a738430d | 20173 | /* Read in the header. */ |
6e70227d | 20174 | lh->total_length = |
c764a876 DE |
20175 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20176 | &bytes_read, &offset_size); | |
debd256d | 20177 | line_ptr += bytes_read; |
3019eac3 | 20178 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20179 | { |
4d3c2250 | 20180 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20181 | return 0; |
20182 | } | |
20183 | lh->statement_program_end = line_ptr + lh->total_length; | |
20184 | lh->version = read_2_bytes (abfd, line_ptr); | |
20185 | line_ptr += 2; | |
43988095 | 20186 | if (lh->version > 5) |
cd366ee8 DE |
20187 | { |
20188 | /* This is a version we don't understand. The format could have | |
20189 | changed in ways we don't handle properly so just punt. */ | |
20190 | complaint (&symfile_complaints, | |
20191 | _("unsupported version in .debug_line section")); | |
20192 | return NULL; | |
20193 | } | |
43988095 JK |
20194 | if (lh->version >= 5) |
20195 | { | |
20196 | gdb_byte segment_selector_size; | |
20197 | ||
20198 | /* Skip address size. */ | |
20199 | read_1_byte (abfd, line_ptr); | |
20200 | line_ptr += 1; | |
20201 | ||
20202 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20203 | line_ptr += 1; | |
20204 | if (segment_selector_size != 0) | |
20205 | { | |
20206 | complaint (&symfile_complaints, | |
20207 | _("unsupported segment selector size %u " | |
20208 | "in .debug_line section"), | |
20209 | segment_selector_size); | |
20210 | return NULL; | |
20211 | } | |
20212 | } | |
c764a876 DE |
20213 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20214 | line_ptr += offset_size; | |
debd256d JB |
20215 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20216 | line_ptr += 1; | |
2dc7f7b3 TT |
20217 | if (lh->version >= 4) |
20218 | { | |
20219 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20220 | line_ptr += 1; | |
20221 | } | |
20222 | else | |
20223 | lh->maximum_ops_per_instruction = 1; | |
20224 | ||
20225 | if (lh->maximum_ops_per_instruction == 0) | |
20226 | { | |
20227 | lh->maximum_ops_per_instruction = 1; | |
20228 | complaint (&symfile_complaints, | |
3e43a32a MS |
20229 | _("invalid maximum_ops_per_instruction " |
20230 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
20231 | } |
20232 | ||
debd256d JB |
20233 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20234 | line_ptr += 1; | |
20235 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20236 | line_ptr += 1; | |
20237 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20238 | line_ptr += 1; | |
20239 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20240 | line_ptr += 1; | |
fff8551c | 20241 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20242 | |
20243 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20244 | for (i = 1; i < lh->opcode_base; ++i) | |
20245 | { | |
20246 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20247 | line_ptr += 1; | |
20248 | } | |
20249 | ||
43988095 | 20250 | if (lh->version >= 5) |
debd256d | 20251 | { |
43988095 | 20252 | /* Read directory table. */ |
ed2dc618 SM |
20253 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20254 | &cu->header, | |
fff8551c | 20255 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20256 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20257 | unsigned int length) |
20258 | { | |
20259 | lh->add_include_dir (name); | |
20260 | }); | |
debd256d | 20261 | |
43988095 | 20262 | /* Read file name table. */ |
ed2dc618 SM |
20263 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20264 | &cu->header, | |
fff8551c | 20265 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20266 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20267 | unsigned int length) |
20268 | { | |
ecfb656c | 20269 | lh->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20270 | }); |
43988095 JK |
20271 | } |
20272 | else | |
debd256d | 20273 | { |
43988095 JK |
20274 | /* Read directory table. */ |
20275 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20276 | { | |
20277 | line_ptr += bytes_read; | |
fff8551c | 20278 | lh->add_include_dir (cur_dir); |
43988095 | 20279 | } |
debd256d JB |
20280 | line_ptr += bytes_read; |
20281 | ||
43988095 JK |
20282 | /* Read file name table. */ |
20283 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20284 | { | |
ecfb656c PA |
20285 | unsigned int mod_time, length; |
20286 | dir_index d_index; | |
43988095 JK |
20287 | |
20288 | line_ptr += bytes_read; | |
ecfb656c | 20289 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20290 | line_ptr += bytes_read; |
20291 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20292 | line_ptr += bytes_read; | |
20293 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20294 | line_ptr += bytes_read; | |
20295 | ||
ecfb656c | 20296 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20297 | } |
20298 | line_ptr += bytes_read; | |
debd256d | 20299 | } |
6e70227d | 20300 | lh->statement_program_start = line_ptr; |
debd256d | 20301 | |
3019eac3 | 20302 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 20303 | complaint (&symfile_complaints, |
3e43a32a MS |
20304 | _("line number info header doesn't " |
20305 | "fit in `.debug_line' section")); | |
debd256d | 20306 | |
debd256d JB |
20307 | return lh; |
20308 | } | |
c906108c | 20309 | |
c6da4cef DE |
20310 | /* Subroutine of dwarf_decode_lines to simplify it. |
20311 | Return the file name of the psymtab for included file FILE_INDEX | |
20312 | in line header LH of PST. | |
20313 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
c89b44cd TT |
20314 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20315 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20316 | |
d521ce57 | 20317 | static const char * |
c6da4cef DE |
20318 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
20319 | const struct partial_symtab *pst, | |
c89b44cd TT |
20320 | const char *comp_dir, |
20321 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20322 | { |
8c43009f | 20323 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
20324 | const char *include_name = fe.name; |
20325 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20326 | const char *pst_filename; |
c6da4cef DE |
20327 | int file_is_pst; |
20328 | ||
8c43009f | 20329 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20330 | |
c89b44cd | 20331 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20332 | if (!IS_ABSOLUTE_PATH (include_name) |
20333 | && (dir_name != NULL || comp_dir != NULL)) | |
20334 | { | |
20335 | /* Avoid creating a duplicate psymtab for PST. | |
20336 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20337 | Before we do the comparison, however, we need to account | |
20338 | for DIR_NAME and COMP_DIR. | |
20339 | First prepend dir_name (if non-NULL). If we still don't | |
20340 | have an absolute path prepend comp_dir (if non-NULL). | |
20341 | However, the directory we record in the include-file's | |
20342 | psymtab does not contain COMP_DIR (to match the | |
20343 | corresponding symtab(s)). | |
20344 | ||
20345 | Example: | |
20346 | ||
20347 | bash$ cd /tmp | |
20348 | bash$ gcc -g ./hello.c | |
20349 | include_name = "hello.c" | |
20350 | dir_name = "." | |
20351 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20352 | DW_AT_name = "./hello.c" |
20353 | ||
20354 | */ | |
c6da4cef DE |
20355 | |
20356 | if (dir_name != NULL) | |
20357 | { | |
c89b44cd TT |
20358 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20359 | include_name, (char *) NULL)); | |
20360 | include_name = name_holder->get (); | |
c6da4cef | 20361 | include_name_to_compare = include_name; |
c6da4cef DE |
20362 | } |
20363 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20364 | { | |
c89b44cd TT |
20365 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20366 | include_name, (char *) NULL)); | |
20367 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20368 | } |
20369 | } | |
20370 | ||
20371 | pst_filename = pst->filename; | |
c89b44cd | 20372 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20373 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20374 | { | |
c89b44cd TT |
20375 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20376 | pst_filename, (char *) NULL)); | |
20377 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20378 | } |
20379 | ||
1e3fad37 | 20380 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20381 | |
c6da4cef DE |
20382 | if (file_is_pst) |
20383 | return NULL; | |
20384 | return include_name; | |
20385 | } | |
20386 | ||
d9b3de22 DE |
20387 | /* State machine to track the state of the line number program. */ |
20388 | ||
6f77053d | 20389 | class lnp_state_machine |
d9b3de22 | 20390 | { |
6f77053d PA |
20391 | public: |
20392 | /* Initialize a machine state for the start of a line number | |
20393 | program. */ | |
20394 | lnp_state_machine (gdbarch *arch, line_header *lh, bool record_lines_p); | |
20395 | ||
8c43009f PA |
20396 | file_entry *current_file () |
20397 | { | |
20398 | /* lh->file_names is 0-based, but the file name numbers in the | |
20399 | statement program are 1-based. */ | |
6f77053d PA |
20400 | return m_line_header->file_name_at (m_file); |
20401 | } | |
20402 | ||
20403 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20404 | we're processing the end of a sequence. */ | |
20405 | void record_line (bool end_sequence); | |
20406 | ||
20407 | /* Check address and if invalid nop-out the rest of the lines in this | |
20408 | sequence. */ | |
20409 | void check_line_address (struct dwarf2_cu *cu, | |
20410 | const gdb_byte *line_ptr, | |
20411 | CORE_ADDR lowpc, CORE_ADDR address); | |
20412 | ||
20413 | void handle_set_discriminator (unsigned int discriminator) | |
20414 | { | |
20415 | m_discriminator = discriminator; | |
20416 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20417 | } | |
20418 | ||
20419 | /* Handle DW_LNE_set_address. */ | |
20420 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20421 | { | |
20422 | m_op_index = 0; | |
20423 | address += baseaddr; | |
20424 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20425 | } | |
20426 | ||
20427 | /* Handle DW_LNS_advance_pc. */ | |
20428 | void handle_advance_pc (CORE_ADDR adjust); | |
20429 | ||
20430 | /* Handle a special opcode. */ | |
20431 | void handle_special_opcode (unsigned char op_code); | |
20432 | ||
20433 | /* Handle DW_LNS_advance_line. */ | |
20434 | void handle_advance_line (int line_delta) | |
20435 | { | |
20436 | advance_line (line_delta); | |
20437 | } | |
20438 | ||
20439 | /* Handle DW_LNS_set_file. */ | |
20440 | void handle_set_file (file_name_index file); | |
20441 | ||
20442 | /* Handle DW_LNS_negate_stmt. */ | |
20443 | void handle_negate_stmt () | |
20444 | { | |
20445 | m_is_stmt = !m_is_stmt; | |
20446 | } | |
20447 | ||
20448 | /* Handle DW_LNS_const_add_pc. */ | |
20449 | void handle_const_add_pc (); | |
20450 | ||
20451 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20452 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20453 | { | |
20454 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20455 | m_op_index = 0; | |
20456 | } | |
20457 | ||
20458 | /* Handle DW_LNS_copy. */ | |
20459 | void handle_copy () | |
20460 | { | |
20461 | record_line (false); | |
20462 | m_discriminator = 0; | |
20463 | } | |
20464 | ||
20465 | /* Handle DW_LNE_end_sequence. */ | |
20466 | void handle_end_sequence () | |
20467 | { | |
20468 | m_record_line_callback = ::record_line; | |
20469 | } | |
20470 | ||
20471 | private: | |
20472 | /* Advance the line by LINE_DELTA. */ | |
20473 | void advance_line (int line_delta) | |
20474 | { | |
20475 | m_line += line_delta; | |
20476 | ||
20477 | if (line_delta != 0) | |
20478 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20479 | } |
20480 | ||
6f77053d PA |
20481 | gdbarch *m_gdbarch; |
20482 | ||
20483 | /* True if we're recording lines. | |
20484 | Otherwise we're building partial symtabs and are just interested in | |
20485 | finding include files mentioned by the line number program. */ | |
20486 | bool m_record_lines_p; | |
20487 | ||
8c43009f | 20488 | /* The line number header. */ |
6f77053d | 20489 | line_header *m_line_header; |
8c43009f | 20490 | |
6f77053d PA |
20491 | /* These are part of the standard DWARF line number state machine, |
20492 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20493 | |
6f77053d | 20494 | unsigned char m_op_index = 0; |
8c43009f | 20495 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
20496 | file_name_index m_file = (file_name_index) 1; |
20497 | unsigned int m_line = 1; | |
20498 | ||
20499 | /* These are initialized in the constructor. */ | |
20500 | ||
20501 | CORE_ADDR m_address; | |
20502 | bool m_is_stmt; | |
20503 | unsigned int m_discriminator; | |
d9b3de22 DE |
20504 | |
20505 | /* Additional bits of state we need to track. */ | |
20506 | ||
20507 | /* The last file that we called dwarf2_start_subfile for. | |
20508 | This is only used for TLLs. */ | |
6f77053d | 20509 | unsigned int m_last_file = 0; |
d9b3de22 | 20510 | /* The last file a line number was recorded for. */ |
6f77053d | 20511 | struct subfile *m_last_subfile = NULL; |
d9b3de22 DE |
20512 | |
20513 | /* The function to call to record a line. */ | |
6f77053d | 20514 | record_line_ftype *m_record_line_callback = NULL; |
d9b3de22 DE |
20515 | |
20516 | /* The last line number that was recorded, used to coalesce | |
20517 | consecutive entries for the same line. This can happen, for | |
20518 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20519 | unsigned int m_last_line = 0; |
20520 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20521 | }; |
d9b3de22 | 20522 | |
6f77053d PA |
20523 | void |
20524 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20525 | { | |
20526 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20527 | / m_line_header->maximum_ops_per_instruction) | |
20528 | * m_line_header->minimum_instruction_length); | |
20529 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20530 | m_op_index = ((m_op_index + adjust) | |
20531 | % m_line_header->maximum_ops_per_instruction); | |
20532 | } | |
d9b3de22 | 20533 | |
6f77053d PA |
20534 | void |
20535 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20536 | { |
6f77053d PA |
20537 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20538 | CORE_ADDR addr_adj = (((m_op_index | |
20539 | + (adj_opcode / m_line_header->line_range)) | |
20540 | / m_line_header->maximum_ops_per_instruction) | |
20541 | * m_line_header->minimum_instruction_length); | |
20542 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20543 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20544 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20545 | |
6f77053d PA |
20546 | int line_delta = (m_line_header->line_base |
20547 | + (adj_opcode % m_line_header->line_range)); | |
20548 | advance_line (line_delta); | |
20549 | record_line (false); | |
20550 | m_discriminator = 0; | |
20551 | } | |
d9b3de22 | 20552 | |
6f77053d PA |
20553 | void |
20554 | lnp_state_machine::handle_set_file (file_name_index file) | |
20555 | { | |
20556 | m_file = file; | |
20557 | ||
20558 | const file_entry *fe = current_file (); | |
20559 | if (fe == NULL) | |
20560 | dwarf2_debug_line_missing_file_complaint (); | |
20561 | else if (m_record_lines_p) | |
20562 | { | |
20563 | const char *dir = fe->include_dir (m_line_header); | |
20564 | ||
20565 | m_last_subfile = current_subfile; | |
20566 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
20567 | dwarf2_start_subfile (fe->name, dir); | |
20568 | } | |
20569 | } | |
20570 | ||
20571 | void | |
20572 | lnp_state_machine::handle_const_add_pc () | |
20573 | { | |
20574 | CORE_ADDR adjust | |
20575 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20576 | ||
20577 | CORE_ADDR addr_adj | |
20578 | = (((m_op_index + adjust) | |
20579 | / m_line_header->maximum_ops_per_instruction) | |
20580 | * m_line_header->minimum_instruction_length); | |
20581 | ||
20582 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20583 | m_op_index = ((m_op_index + adjust) | |
20584 | % m_line_header->maximum_ops_per_instruction); | |
20585 | } | |
d9b3de22 | 20586 | |
c91513d8 PP |
20587 | /* Ignore this record_line request. */ |
20588 | ||
20589 | static void | |
20590 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
20591 | { | |
20592 | return; | |
20593 | } | |
20594 | ||
a05a36a5 DE |
20595 | /* Return non-zero if we should add LINE to the line number table. |
20596 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20597 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20598 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20599 | had a non-zero discriminator. | |
20600 | ||
20601 | We have to be careful in the presence of discriminators. | |
20602 | E.g., for this line: | |
20603 | ||
20604 | for (i = 0; i < 100000; i++); | |
20605 | ||
20606 | clang can emit four line number entries for that one line, | |
20607 | each with a different discriminator. | |
20608 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20609 | ||
20610 | However, we want gdb to coalesce all four entries into one. | |
20611 | Otherwise the user could stepi into the middle of the line and | |
20612 | gdb would get confused about whether the pc really was in the | |
20613 | middle of the line. | |
20614 | ||
20615 | Things are further complicated by the fact that two consecutive | |
20616 | line number entries for the same line is a heuristic used by gcc | |
20617 | to denote the end of the prologue. So we can't just discard duplicate | |
20618 | entries, we have to be selective about it. The heuristic we use is | |
20619 | that we only collapse consecutive entries for the same line if at least | |
20620 | one of those entries has a non-zero discriminator. PR 17276. | |
20621 | ||
20622 | Note: Addresses in the line number state machine can never go backwards | |
20623 | within one sequence, thus this coalescing is ok. */ | |
20624 | ||
20625 | static int | |
20626 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
20627 | int line_has_non_zero_discriminator, | |
20628 | struct subfile *last_subfile) | |
20629 | { | |
20630 | if (current_subfile != last_subfile) | |
20631 | return 1; | |
20632 | if (line != last_line) | |
20633 | return 1; | |
20634 | /* Same line for the same file that we've seen already. | |
20635 | As a last check, for pr 17276, only record the line if the line | |
20636 | has never had a non-zero discriminator. */ | |
20637 | if (!line_has_non_zero_discriminator) | |
20638 | return 1; | |
20639 | return 0; | |
20640 | } | |
20641 | ||
252a6764 DE |
20642 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
20643 | in the line table of subfile SUBFILE. */ | |
20644 | ||
20645 | static void | |
d9b3de22 DE |
20646 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
20647 | unsigned int line, CORE_ADDR address, | |
20648 | record_line_ftype p_record_line) | |
252a6764 DE |
20649 | { |
20650 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20651 | ||
27e0867f DE |
20652 | if (dwarf_line_debug) |
20653 | { | |
20654 | fprintf_unfiltered (gdb_stdlog, | |
20655 | "Recording line %u, file %s, address %s\n", | |
20656 | line, lbasename (subfile->name), | |
20657 | paddress (gdbarch, address)); | |
20658 | } | |
20659 | ||
d5962de5 | 20660 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
20661 | } |
20662 | ||
20663 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20664 | Mark the end of a set of line number records. | |
d9b3de22 | 20665 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20666 | If SUBFILE is NULL the request is ignored. */ |
20667 | ||
20668 | static void | |
20669 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
20670 | CORE_ADDR address, record_line_ftype p_record_line) | |
20671 | { | |
27e0867f DE |
20672 | if (subfile == NULL) |
20673 | return; | |
20674 | ||
20675 | if (dwarf_line_debug) | |
20676 | { | |
20677 | fprintf_unfiltered (gdb_stdlog, | |
20678 | "Finishing current line, file %s, address %s\n", | |
20679 | lbasename (subfile->name), | |
20680 | paddress (gdbarch, address)); | |
20681 | } | |
20682 | ||
d9b3de22 DE |
20683 | dwarf_record_line_1 (gdbarch, subfile, 0, address, p_record_line); |
20684 | } | |
20685 | ||
6f77053d PA |
20686 | void |
20687 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20688 | { |
d9b3de22 DE |
20689 | if (dwarf_line_debug) |
20690 | { | |
20691 | fprintf_unfiltered (gdb_stdlog, | |
20692 | "Processing actual line %u: file %u," | |
20693 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
20694 | m_line, to_underlying (m_file), |
20695 | paddress (m_gdbarch, m_address), | |
20696 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
20697 | } |
20698 | ||
6f77053d | 20699 | file_entry *fe = current_file (); |
8c43009f PA |
20700 | |
20701 | if (fe == NULL) | |
d9b3de22 DE |
20702 | dwarf2_debug_line_missing_file_complaint (); |
20703 | /* For now we ignore lines not starting on an instruction boundary. | |
20704 | But not when processing end_sequence for compatibility with the | |
20705 | previous version of the code. */ | |
6f77053d | 20706 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20707 | { |
8c43009f | 20708 | fe->included_p = 1; |
6f77053d | 20709 | if (m_record_lines_p && m_is_stmt) |
d9b3de22 | 20710 | { |
6f77053d | 20711 | if (m_last_subfile != current_subfile || end_sequence) |
d9b3de22 | 20712 | { |
6f77053d PA |
20713 | dwarf_finish_line (m_gdbarch, m_last_subfile, |
20714 | m_address, m_record_line_callback); | |
d9b3de22 DE |
20715 | } |
20716 | ||
20717 | if (!end_sequence) | |
20718 | { | |
6f77053d PA |
20719 | if (dwarf_record_line_p (m_line, m_last_line, |
20720 | m_line_has_non_zero_discriminator, | |
20721 | m_last_subfile)) | |
d9b3de22 | 20722 | { |
6f77053d PA |
20723 | dwarf_record_line_1 (m_gdbarch, current_subfile, |
20724 | m_line, m_address, | |
20725 | m_record_line_callback); | |
d9b3de22 | 20726 | } |
6f77053d PA |
20727 | m_last_subfile = current_subfile; |
20728 | m_last_line = m_line; | |
d9b3de22 DE |
20729 | } |
20730 | } | |
20731 | } | |
20732 | } | |
20733 | ||
6f77053d PA |
20734 | lnp_state_machine::lnp_state_machine (gdbarch *arch, line_header *lh, |
20735 | bool record_lines_p) | |
d9b3de22 | 20736 | { |
6f77053d PA |
20737 | m_gdbarch = arch; |
20738 | m_record_lines_p = record_lines_p; | |
20739 | m_line_header = lh; | |
d9b3de22 | 20740 | |
6f77053d | 20741 | m_record_line_callback = ::record_line; |
d9b3de22 | 20742 | |
d9b3de22 DE |
20743 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20744 | was a line entry for it so that the backend has a chance to adjust it | |
20745 | and also record it in case it needs it. This is currently used by MIPS | |
20746 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20747 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20748 | m_is_stmt = lh->default_is_stmt; | |
20749 | m_discriminator = 0; | |
252a6764 DE |
20750 | } |
20751 | ||
6f77053d PA |
20752 | void |
20753 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20754 | const gdb_byte *line_ptr, | |
20755 | CORE_ADDR lowpc, CORE_ADDR address) | |
924c2928 DE |
20756 | { |
20757 | /* If address < lowpc then it's not a usable value, it's outside the | |
20758 | pc range of the CU. However, we restrict the test to only address | |
20759 | values of zero to preserve GDB's previous behaviour which is to | |
20760 | handle the specific case of a function being GC'd by the linker. */ | |
20761 | ||
20762 | if (address == 0 && address < lowpc) | |
20763 | { | |
20764 | /* This line table is for a function which has been | |
20765 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20766 | ||
518817b3 | 20767 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
20768 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20769 | ||
20770 | complaint (&symfile_complaints, | |
20771 | _(".debug_line address at offset 0x%lx is 0 [in module %s]"), | |
20772 | line_offset, objfile_name (objfile)); | |
6f77053d PA |
20773 | m_record_line_callback = noop_record_line; |
20774 | /* Note: record_line_callback is left as noop_record_line until | |
20775 | we see DW_LNE_end_sequence. */ | |
924c2928 DE |
20776 | } |
20777 | } | |
20778 | ||
f3f5162e | 20779 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20780 | Process the line number information in LH. |
20781 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20782 | program in order to set included_p for every referenced header. */ | |
debd256d | 20783 | |
c906108c | 20784 | static void |
43f3e411 DE |
20785 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20786 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20787 | { |
d521ce57 TT |
20788 | const gdb_byte *line_ptr, *extended_end; |
20789 | const gdb_byte *line_end; | |
a8c50c1f | 20790 | unsigned int bytes_read, extended_len; |
699ca60a | 20791 | unsigned char op_code, extended_op; |
e142c38c | 20792 | CORE_ADDR baseaddr; |
518817b3 | 20793 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20794 | bfd *abfd = objfile->obfd; |
fbf65064 | 20795 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
20796 | /* True if we're recording line info (as opposed to building partial |
20797 | symtabs and just interested in finding include files mentioned by | |
20798 | the line number program). */ | |
20799 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
20800 | |
20801 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 20802 | |
debd256d JB |
20803 | line_ptr = lh->statement_program_start; |
20804 | line_end = lh->statement_program_end; | |
c906108c SS |
20805 | |
20806 | /* Read the statement sequences until there's nothing left. */ | |
20807 | while (line_ptr < line_end) | |
20808 | { | |
6f77053d PA |
20809 | /* The DWARF line number program state machine. Reset the state |
20810 | machine at the start of each sequence. */ | |
20811 | lnp_state_machine state_machine (gdbarch, lh, record_lines_p); | |
20812 | bool end_sequence = false; | |
d9b3de22 | 20813 | |
8c43009f | 20814 | if (record_lines_p) |
c906108c | 20815 | { |
8c43009f PA |
20816 | /* Start a subfile for the current file of the state |
20817 | machine. */ | |
20818 | const file_entry *fe = state_machine.current_file (); | |
20819 | ||
20820 | if (fe != NULL) | |
20821 | dwarf2_start_subfile (fe->name, fe->include_dir (lh)); | |
c906108c SS |
20822 | } |
20823 | ||
a738430d | 20824 | /* Decode the table. */ |
d9b3de22 | 20825 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20826 | { |
20827 | op_code = read_1_byte (abfd, line_ptr); | |
20828 | line_ptr += 1; | |
9aa1fe7e | 20829 | |
debd256d | 20830 | if (op_code >= lh->opcode_base) |
6e70227d | 20831 | { |
8e07a239 | 20832 | /* Special opcode. */ |
6f77053d | 20833 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20834 | } |
20835 | else switch (op_code) | |
c906108c SS |
20836 | { |
20837 | case DW_LNS_extended_op: | |
3e43a32a MS |
20838 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20839 | &bytes_read); | |
473b7be6 | 20840 | line_ptr += bytes_read; |
a8c50c1f | 20841 | extended_end = line_ptr + extended_len; |
c906108c SS |
20842 | extended_op = read_1_byte (abfd, line_ptr); |
20843 | line_ptr += 1; | |
20844 | switch (extended_op) | |
20845 | { | |
20846 | case DW_LNE_end_sequence: | |
6f77053d PA |
20847 | state_machine.handle_end_sequence (); |
20848 | end_sequence = true; | |
c906108c SS |
20849 | break; |
20850 | case DW_LNE_set_address: | |
d9b3de22 DE |
20851 | { |
20852 | CORE_ADDR address | |
20853 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 20854 | line_ptr += bytes_read; |
6f77053d PA |
20855 | |
20856 | state_machine.check_line_address (cu, line_ptr, | |
20857 | lowpc, address); | |
20858 | state_machine.handle_set_address (baseaddr, address); | |
d9b3de22 | 20859 | } |
c906108c SS |
20860 | break; |
20861 | case DW_LNE_define_file: | |
debd256d | 20862 | { |
d521ce57 | 20863 | const char *cur_file; |
ecfb656c PA |
20864 | unsigned int mod_time, length; |
20865 | dir_index dindex; | |
6e70227d | 20866 | |
3e43a32a MS |
20867 | cur_file = read_direct_string (abfd, line_ptr, |
20868 | &bytes_read); | |
debd256d | 20869 | line_ptr += bytes_read; |
ecfb656c | 20870 | dindex = (dir_index) |
debd256d JB |
20871 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20872 | line_ptr += bytes_read; | |
20873 | mod_time = | |
20874 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20875 | line_ptr += bytes_read; | |
20876 | length = | |
20877 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20878 | line_ptr += bytes_read; | |
ecfb656c | 20879 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20880 | } |
c906108c | 20881 | break; |
d0c6ba3d | 20882 | case DW_LNE_set_discriminator: |
6f77053d PA |
20883 | { |
20884 | /* The discriminator is not interesting to the | |
20885 | debugger; just ignore it. We still need to | |
20886 | check its value though: | |
20887 | if there are consecutive entries for the same | |
20888 | (non-prologue) line we want to coalesce them. | |
20889 | PR 17276. */ | |
20890 | unsigned int discr | |
20891 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20892 | line_ptr += bytes_read; | |
20893 | ||
20894 | state_machine.handle_set_discriminator (discr); | |
20895 | } | |
d0c6ba3d | 20896 | break; |
c906108c | 20897 | default: |
4d3c2250 | 20898 | complaint (&symfile_complaints, |
e2e0b3e5 | 20899 | _("mangled .debug_line section")); |
debd256d | 20900 | return; |
c906108c | 20901 | } |
a8c50c1f DJ |
20902 | /* Make sure that we parsed the extended op correctly. If e.g. |
20903 | we expected a different address size than the producer used, | |
20904 | we may have read the wrong number of bytes. */ | |
20905 | if (line_ptr != extended_end) | |
20906 | { | |
20907 | complaint (&symfile_complaints, | |
20908 | _("mangled .debug_line section")); | |
20909 | return; | |
20910 | } | |
c906108c SS |
20911 | break; |
20912 | case DW_LNS_copy: | |
6f77053d | 20913 | state_machine.handle_copy (); |
c906108c SS |
20914 | break; |
20915 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20916 | { |
20917 | CORE_ADDR adjust | |
20918 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20919 | line_ptr += bytes_read; |
6f77053d PA |
20920 | |
20921 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20922 | } |
c906108c SS |
20923 | break; |
20924 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20925 | { |
20926 | int line_delta | |
20927 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20928 | line_ptr += bytes_read; |
6f77053d PA |
20929 | |
20930 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20931 | } |
c906108c SS |
20932 | break; |
20933 | case DW_LNS_set_file: | |
d9b3de22 | 20934 | { |
6f77053d | 20935 | file_name_index file |
ecfb656c PA |
20936 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20937 | &bytes_read); | |
d9b3de22 | 20938 | line_ptr += bytes_read; |
8c43009f | 20939 | |
6f77053d | 20940 | state_machine.handle_set_file (file); |
d9b3de22 | 20941 | } |
c906108c SS |
20942 | break; |
20943 | case DW_LNS_set_column: | |
0ad93d4f | 20944 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20945 | line_ptr += bytes_read; |
20946 | break; | |
20947 | case DW_LNS_negate_stmt: | |
6f77053d | 20948 | state_machine.handle_negate_stmt (); |
c906108c SS |
20949 | break; |
20950 | case DW_LNS_set_basic_block: | |
c906108c | 20951 | break; |
c2c6d25f JM |
20952 | /* Add to the address register of the state machine the |
20953 | address increment value corresponding to special opcode | |
a738430d MK |
20954 | 255. I.e., this value is scaled by the minimum |
20955 | instruction length since special opcode 255 would have | |
b021a221 | 20956 | scaled the increment. */ |
c906108c | 20957 | case DW_LNS_const_add_pc: |
6f77053d | 20958 | state_machine.handle_const_add_pc (); |
c906108c SS |
20959 | break; |
20960 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20961 | { |
6f77053d | 20962 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20963 | line_ptr += 2; |
6f77053d PA |
20964 | |
20965 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20966 | } |
c906108c | 20967 | break; |
9aa1fe7e | 20968 | default: |
a738430d MK |
20969 | { |
20970 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20971 | int i; |
a738430d | 20972 | |
debd256d | 20973 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20974 | { |
20975 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20976 | line_ptr += bytes_read; | |
20977 | } | |
20978 | } | |
c906108c SS |
20979 | } |
20980 | } | |
d9b3de22 DE |
20981 | |
20982 | if (!end_sequence) | |
20983 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20984 | ||
20985 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20986 | in which case we still finish recording the last line). */ | |
6f77053d | 20987 | state_machine.record_line (true); |
c906108c | 20988 | } |
f3f5162e DE |
20989 | } |
20990 | ||
20991 | /* Decode the Line Number Program (LNP) for the given line_header | |
20992 | structure and CU. The actual information extracted and the type | |
20993 | of structures created from the LNP depends on the value of PST. | |
20994 | ||
20995 | 1. If PST is NULL, then this procedure uses the data from the program | |
20996 | to create all necessary symbol tables, and their linetables. | |
20997 | ||
20998 | 2. If PST is not NULL, this procedure reads the program to determine | |
20999 | the list of files included by the unit represented by PST, and | |
21000 | builds all the associated partial symbol tables. | |
21001 | ||
21002 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21003 | It is used for relative paths in the line table. | |
21004 | NOTE: When processing partial symtabs (pst != NULL), | |
21005 | comp_dir == pst->dirname. | |
21006 | ||
21007 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21008 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21009 | symtab we don't use it in the name of the psymtabs we create. | |
21010 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21011 | A good testcase for this is mb-inline.exp. |
21012 | ||
527f3840 JK |
21013 | LOWPC is the lowest address in CU (or 0 if not known). |
21014 | ||
21015 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21016 | for its PC<->lines mapping information. Otherwise only the filename | |
21017 | table is read in. */ | |
f3f5162e DE |
21018 | |
21019 | static void | |
21020 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 21021 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 21022 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21023 | { |
518817b3 | 21024 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21025 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21026 | |
527f3840 JK |
21027 | if (decode_mapping) |
21028 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21029 | |
21030 | if (decode_for_pst_p) | |
21031 | { | |
21032 | int file_index; | |
21033 | ||
21034 | /* Now that we're done scanning the Line Header Program, we can | |
21035 | create the psymtab of each included file. */ | |
fff8551c | 21036 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
21037 | if (lh->file_names[file_index].included_p == 1) |
21038 | { | |
c89b44cd | 21039 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21040 | const char *include_name = |
c89b44cd TT |
21041 | psymtab_include_file_name (lh, file_index, pst, comp_dir, |
21042 | &name_holder); | |
c6da4cef | 21043 | if (include_name != NULL) |
aaa75496 JB |
21044 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21045 | } | |
21046 | } | |
cb1df416 DJ |
21047 | else |
21048 | { | |
21049 | /* Make sure a symtab is created for every file, even files | |
21050 | which contain only variables (i.e. no code with associated | |
21051 | line numbers). */ | |
43f3e411 | 21052 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 21053 | int i; |
cb1df416 | 21054 | |
fff8551c | 21055 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 21056 | { |
8c43009f | 21057 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 21058 | |
8c43009f | 21059 | dwarf2_start_subfile (fe.name, fe.include_dir (lh)); |
cb1df416 | 21060 | |
cb1df416 | 21061 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
21062 | { |
21063 | current_subfile->symtab | |
21064 | = allocate_symtab (cust, current_subfile->name); | |
21065 | } | |
8c43009f | 21066 | fe.symtab = current_subfile->symtab; |
cb1df416 DJ |
21067 | } |
21068 | } | |
c906108c SS |
21069 | } |
21070 | ||
21071 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21072 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21073 | or NULL if not known. |
c906108c SS |
21074 | This routine tries to keep line numbers from identical absolute and |
21075 | relative file names in a common subfile. | |
21076 | ||
21077 | Using the `list' example from the GDB testsuite, which resides in | |
21078 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21079 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21080 | ||
c5aa993b | 21081 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21082 | DW_AT_comp_dir: /compdir |
357e46e7 | 21083 | files.files[0].name: list0.h |
c5aa993b | 21084 | files.files[0].dir: /srcdir |
357e46e7 | 21085 | files.files[1].name: list0.c |
c5aa993b | 21086 | files.files[1].dir: /srcdir |
c906108c SS |
21087 | |
21088 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21089 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21090 | start_subfile will ensure that this happens provided that we pass the | |
21091 | concatenation of files.files[1].dir and files.files[1].name as the | |
21092 | subfile's name. */ | |
c906108c SS |
21093 | |
21094 | static void | |
4d663531 | 21095 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 21096 | { |
d521ce57 | 21097 | char *copy = NULL; |
4f1520fb | 21098 | |
4d663531 | 21099 | /* In order not to lose the line information directory, |
4f1520fb FR |
21100 | we concatenate it to the filename when it makes sense. |
21101 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21102 | information): ``The directory index is ignored for file names | |
21103 | that represent full path names''. Thus ignoring dirname in the | |
21104 | `else' branch below isn't an issue. */ | |
c906108c | 21105 | |
d5166ae1 | 21106 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
21107 | { |
21108 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
21109 | filename = copy; | |
21110 | } | |
c906108c | 21111 | |
4d663531 | 21112 | start_subfile (filename); |
4f1520fb | 21113 | |
d521ce57 TT |
21114 | if (copy != NULL) |
21115 | xfree (copy); | |
c906108c SS |
21116 | } |
21117 | ||
f4dc4d17 DE |
21118 | /* Start a symtab for DWARF. |
21119 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
21120 | ||
43f3e411 | 21121 | static struct compunit_symtab * |
f4dc4d17 | 21122 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 21123 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 21124 | { |
43f3e411 | 21125 | struct compunit_symtab *cust |
518817b3 SM |
21126 | = start_symtab (cu->per_cu->dwarf2_per_objfile->objfile, name, comp_dir, |
21127 | low_pc, cu->language); | |
43f3e411 | 21128 | |
f4dc4d17 DE |
21129 | record_debugformat ("DWARF 2"); |
21130 | record_producer (cu->producer); | |
21131 | ||
21132 | /* We assume that we're processing GCC output. */ | |
21133 | processing_gcc_compilation = 2; | |
21134 | ||
4d4ec4e5 | 21135 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
21136 | |
21137 | return cust; | |
f4dc4d17 DE |
21138 | } |
21139 | ||
4c2df51b DJ |
21140 | static void |
21141 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21142 | struct dwarf2_cu *cu) |
4c2df51b | 21143 | { |
518817b3 | 21144 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21145 | struct comp_unit_head *cu_header = &cu->header; |
21146 | ||
4c2df51b DJ |
21147 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21148 | code here to turn a symbol with DW_AT_external and a | |
21149 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21150 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21151 | with some versions of binutils) where shared libraries could have | |
21152 | relocations against symbols in their debug information - the | |
21153 | minimal symbol would have the right address, but the debug info | |
21154 | would not. It's no longer necessary, because we will explicitly | |
21155 | apply relocations when we read in the debug information now. */ | |
21156 | ||
21157 | /* A DW_AT_location attribute with no contents indicates that a | |
21158 | variable has been optimized away. */ | |
21159 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21160 | { | |
f1e6e072 | 21161 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21162 | return; |
21163 | } | |
21164 | ||
21165 | /* Handle one degenerate form of location expression specially, to | |
21166 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
21167 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
21168 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21169 | |
21170 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21171 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21172 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
21173 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
21174 | && (DW_BLOCK (attr)->size | |
21175 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21176 | { |
891d2f0b | 21177 | unsigned int dummy; |
4c2df51b | 21178 | |
3019eac3 DE |
21179 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
21180 | SYMBOL_VALUE_ADDRESS (sym) = | |
21181 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
21182 | else | |
21183 | SYMBOL_VALUE_ADDRESS (sym) = | |
21184 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 21185 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
21186 | fixup_symbol_section (sym, objfile); |
21187 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
21188 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
21189 | return; |
21190 | } | |
21191 | ||
21192 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21193 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21194 | (i.e. when the value of a register or memory location is | |
21195 | referenced, or a thread-local block, etc.). Then again, it might | |
21196 | not be worthwhile. I'm assuming that it isn't unless performance | |
21197 | or memory numbers show me otherwise. */ | |
21198 | ||
f1e6e072 | 21199 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21200 | |
f1e6e072 | 21201 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 21202 | cu->has_loclist = 1; |
4c2df51b DJ |
21203 | } |
21204 | ||
c906108c SS |
21205 | /* Given a pointer to a DWARF information entry, figure out if we need |
21206 | to make a symbol table entry for it, and if so, create a new entry | |
21207 | and return a pointer to it. | |
21208 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21209 | used the passed type. |
21210 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21211 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21212 | |
21213 | static struct symbol * | |
5e2db402 TT |
21214 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21215 | struct symbol *space) | |
c906108c | 21216 | { |
518817b3 SM |
21217 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21218 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21219 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21220 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21221 | struct symbol *sym = NULL; |
15d034d0 | 21222 | const char *name; |
c906108c SS |
21223 | struct attribute *attr = NULL; |
21224 | struct attribute *attr2 = NULL; | |
e142c38c | 21225 | CORE_ADDR baseaddr; |
e37fd15a SW |
21226 | struct pending **list_to_add = NULL; |
21227 | ||
edb3359d | 21228 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
21229 | |
21230 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21231 | |
94af9270 | 21232 | name = dwarf2_name (die, cu); |
c906108c SS |
21233 | if (name) |
21234 | { | |
94af9270 | 21235 | const char *linkagename; |
34eaf542 | 21236 | int suppress_add = 0; |
94af9270 | 21237 | |
34eaf542 TT |
21238 | if (space) |
21239 | sym = space; | |
21240 | else | |
e623cf5d | 21241 | sym = allocate_symbol (objfile); |
c906108c | 21242 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21243 | |
21244 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 21245 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
21246 | linkagename = dwarf2_physname (name, die, cu); |
21247 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 21248 | |
f55ee35c JK |
21249 | /* Fortran does not have mangling standard and the mangling does differ |
21250 | between gfortran, iFort etc. */ | |
21251 | if (cu->language == language_fortran | |
b250c185 | 21252 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 21253 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 21254 | dwarf2_full_name (name, die, cu), |
29df156d | 21255 | NULL); |
f55ee35c | 21256 | |
c906108c | 21257 | /* Default assumptions. |
c5aa993b | 21258 | Use the passed type or decode it from the die. */ |
176620f1 | 21259 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21260 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21261 | if (type != NULL) |
21262 | SYMBOL_TYPE (sym) = type; | |
21263 | else | |
e7c27a73 | 21264 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21265 | attr = dwarf2_attr (die, |
21266 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21267 | cu); | |
c906108c SS |
21268 | if (attr) |
21269 | { | |
21270 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21271 | } | |
cb1df416 | 21272 | |
edb3359d DJ |
21273 | attr = dwarf2_attr (die, |
21274 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21275 | cu); | |
cb1df416 DJ |
21276 | if (attr) |
21277 | { | |
ecfb656c | 21278 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21279 | struct file_entry *fe; |
9a619af0 | 21280 | |
ecfb656c PA |
21281 | if (cu->line_header != NULL) |
21282 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21283 | else |
21284 | fe = NULL; | |
21285 | ||
21286 | if (fe == NULL) | |
cb1df416 DJ |
21287 | complaint (&symfile_complaints, |
21288 | _("file index out of range")); | |
8c43009f PA |
21289 | else |
21290 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21291 | } |
21292 | ||
c906108c SS |
21293 | switch (die->tag) |
21294 | { | |
21295 | case DW_TAG_label: | |
e142c38c | 21296 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 21297 | if (attr) |
3e29f34a MR |
21298 | { |
21299 | CORE_ADDR addr; | |
21300 | ||
21301 | addr = attr_value_as_address (attr); | |
21302 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
21303 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
21304 | } | |
0f5238ed TT |
21305 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21306 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21307 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 21308 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21309 | break; |
21310 | case DW_TAG_subprogram: | |
21311 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21312 | finish_block. */ | |
f1e6e072 | 21313 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21314 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
21315 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
21316 | || cu->language == language_ada) | |
c906108c | 21317 | { |
2cfa0c8d JB |
21318 | /* Subprograms marked external are stored as a global symbol. |
21319 | Ada subprograms, whether marked external or not, are always | |
21320 | stored as a global symbol, because we want to be able to | |
21321 | access them globally. For instance, we want to be able | |
21322 | to break on a nested subprogram without having to | |
21323 | specify the context. */ | |
e37fd15a | 21324 | list_to_add = &global_symbols; |
c906108c SS |
21325 | } |
21326 | else | |
21327 | { | |
e37fd15a | 21328 | list_to_add = cu->list_in_scope; |
c906108c SS |
21329 | } |
21330 | break; | |
edb3359d DJ |
21331 | case DW_TAG_inlined_subroutine: |
21332 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21333 | finish_block. */ | |
f1e6e072 | 21334 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21335 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21336 | list_to_add = cu->list_in_scope; |
edb3359d | 21337 | break; |
34eaf542 TT |
21338 | case DW_TAG_template_value_param: |
21339 | suppress_add = 1; | |
21340 | /* Fall through. */ | |
72929c62 | 21341 | case DW_TAG_constant: |
c906108c | 21342 | case DW_TAG_variable: |
254e6b9e | 21343 | case DW_TAG_member: |
0963b4bd MS |
21344 | /* Compilation with minimal debug info may result in |
21345 | variables with missing type entries. Change the | |
21346 | misleading `void' type to something sensible. */ | |
c906108c | 21347 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21348 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21349 | |
e142c38c | 21350 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21351 | /* In the case of DW_TAG_member, we should only be called for |
21352 | static const members. */ | |
21353 | if (die->tag == DW_TAG_member) | |
21354 | { | |
3863f96c DE |
21355 | /* dwarf2_add_field uses die_is_declaration, |
21356 | so we do the same. */ | |
254e6b9e DE |
21357 | gdb_assert (die_is_declaration (die, cu)); |
21358 | gdb_assert (attr); | |
21359 | } | |
c906108c SS |
21360 | if (attr) |
21361 | { | |
e7c27a73 | 21362 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21363 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21364 | if (!suppress_add) |
34eaf542 TT |
21365 | { |
21366 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 21367 | list_to_add = &global_symbols; |
34eaf542 | 21368 | else |
e37fd15a | 21369 | list_to_add = cu->list_in_scope; |
34eaf542 | 21370 | } |
c906108c SS |
21371 | break; |
21372 | } | |
e142c38c | 21373 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21374 | if (attr) |
21375 | { | |
e7c27a73 | 21376 | var_decode_location (attr, sym, cu); |
e142c38c | 21377 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21378 | |
21379 | /* Fortran explicitly imports any global symbols to the local | |
21380 | scope by DW_TAG_common_block. */ | |
21381 | if (cu->language == language_fortran && die->parent | |
21382 | && die->parent->tag == DW_TAG_common_block) | |
21383 | attr2 = NULL; | |
21384 | ||
caac4577 JG |
21385 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21386 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21387 | && !dwarf2_per_objfile->has_section_at_zero) | |
21388 | { | |
21389 | /* When a static variable is eliminated by the linker, | |
21390 | the corresponding debug information is not stripped | |
21391 | out, but the variable address is set to null; | |
21392 | do not add such variables into symbol table. */ | |
21393 | } | |
21394 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21395 | { |
f55ee35c JK |
21396 | /* Workaround gfortran PR debug/40040 - it uses |
21397 | DW_AT_location for variables in -fPIC libraries which may | |
21398 | get overriden by other libraries/executable and get | |
21399 | a different address. Resolve it by the minimal symbol | |
21400 | which may come from inferior's executable using copy | |
21401 | relocation. Make this workaround only for gfortran as for | |
21402 | other compilers GDB cannot guess the minimal symbol | |
21403 | Fortran mangling kind. */ | |
21404 | if (cu->language == language_fortran && die->parent | |
21405 | && die->parent->tag == DW_TAG_module | |
21406 | && cu->producer | |
28586665 | 21407 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 21408 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 21409 | |
1c809c68 TT |
21410 | /* A variable with DW_AT_external is never static, |
21411 | but it may be block-scoped. */ | |
21412 | list_to_add = (cu->list_in_scope == &file_symbols | |
21413 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 21414 | } |
c906108c | 21415 | else |
e37fd15a | 21416 | list_to_add = cu->list_in_scope; |
c906108c SS |
21417 | } |
21418 | else | |
21419 | { | |
21420 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21421 | If it is an external symbol and we have type information |
21422 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21423 | The address of the variable will then be determined from | |
21424 | the minimal symbol table whenever the variable is | |
21425 | referenced. */ | |
e142c38c | 21426 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21427 | |
21428 | /* Fortran explicitly imports any global symbols to the local | |
21429 | scope by DW_TAG_common_block. */ | |
21430 | if (cu->language == language_fortran && die->parent | |
21431 | && die->parent->tag == DW_TAG_common_block) | |
21432 | { | |
21433 | /* SYMBOL_CLASS doesn't matter here because | |
21434 | read_common_block is going to reset it. */ | |
21435 | if (!suppress_add) | |
21436 | list_to_add = cu->list_in_scope; | |
21437 | } | |
21438 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21439 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21440 | { |
0fe7935b DJ |
21441 | /* A variable with DW_AT_external is never static, but it |
21442 | may be block-scoped. */ | |
21443 | list_to_add = (cu->list_in_scope == &file_symbols | |
21444 | ? &global_symbols : cu->list_in_scope); | |
21445 | ||
f1e6e072 | 21446 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21447 | } |
442ddf59 JK |
21448 | else if (!die_is_declaration (die, cu)) |
21449 | { | |
21450 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21451 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21452 | if (!suppress_add) |
21453 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21454 | } |
c906108c SS |
21455 | } |
21456 | break; | |
21457 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
21458 | /* If we are inside a function, mark this as an argument. If |
21459 | not, we might be looking at an argument to an inlined function | |
21460 | when we do not have enough information to show inlined frames; | |
21461 | pretend it's a local variable in that case so that the user can | |
21462 | still see it. */ | |
21463 | if (context_stack_depth > 0 | |
21464 | && context_stack[context_stack_depth - 1].name != NULL) | |
21465 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 21466 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21467 | if (attr) |
21468 | { | |
e7c27a73 | 21469 | var_decode_location (attr, sym, cu); |
c906108c | 21470 | } |
e142c38c | 21471 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21472 | if (attr) |
21473 | { | |
e7c27a73 | 21474 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21475 | } |
f346a30d | 21476 | |
e37fd15a | 21477 | list_to_add = cu->list_in_scope; |
c906108c SS |
21478 | break; |
21479 | case DW_TAG_unspecified_parameters: | |
21480 | /* From varargs functions; gdb doesn't seem to have any | |
21481 | interest in this information, so just ignore it for now. | |
21482 | (FIXME?) */ | |
21483 | break; | |
34eaf542 TT |
21484 | case DW_TAG_template_type_param: |
21485 | suppress_add = 1; | |
21486 | /* Fall through. */ | |
c906108c | 21487 | case DW_TAG_class_type: |
680b30c7 | 21488 | case DW_TAG_interface_type: |
c906108c SS |
21489 | case DW_TAG_structure_type: |
21490 | case DW_TAG_union_type: | |
72019c9c | 21491 | case DW_TAG_set_type: |
c906108c | 21492 | case DW_TAG_enumeration_type: |
f1e6e072 | 21493 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21494 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21495 | |
63d06c5c | 21496 | { |
9c37b5ae | 21497 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21498 | really ever be static objects: otherwise, if you try |
21499 | to, say, break of a class's method and you're in a file | |
21500 | which doesn't mention that class, it won't work unless | |
21501 | the check for all static symbols in lookup_symbol_aux | |
21502 | saves you. See the OtherFileClass tests in | |
21503 | gdb.c++/namespace.exp. */ | |
21504 | ||
e37fd15a | 21505 | if (!suppress_add) |
34eaf542 | 21506 | { |
34eaf542 | 21507 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21508 | && cu->language == language_cplus |
34eaf542 | 21509 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21510 | |
64382290 | 21511 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21512 | ... }" also defines a typedef for "foo". */ |
64382290 | 21513 | if (cu->language == language_cplus |
45280282 | 21514 | || cu->language == language_ada |
c44af4eb TT |
21515 | || cu->language == language_d |
21516 | || cu->language == language_rust) | |
64382290 TT |
21517 | { |
21518 | /* The symbol's name is already allocated along | |
21519 | with this objfile, so we don't need to | |
21520 | duplicate it for the type. */ | |
21521 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
21522 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
21523 | } | |
63d06c5c DC |
21524 | } |
21525 | } | |
c906108c SS |
21526 | break; |
21527 | case DW_TAG_typedef: | |
f1e6e072 | 21528 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21529 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21530 | list_to_add = cu->list_in_scope; |
63d06c5c | 21531 | break; |
c906108c | 21532 | case DW_TAG_base_type: |
a02abb62 | 21533 | case DW_TAG_subrange_type: |
f1e6e072 | 21534 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21535 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21536 | list_to_add = cu->list_in_scope; |
c906108c SS |
21537 | break; |
21538 | case DW_TAG_enumerator: | |
e142c38c | 21539 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21540 | if (attr) |
21541 | { | |
e7c27a73 | 21542 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21543 | } |
63d06c5c DC |
21544 | { |
21545 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21546 | DW_TAG_class_type, etc. block. */ | |
21547 | ||
e142c38c | 21548 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21549 | && cu->language == language_cplus |
e142c38c | 21550 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21551 | } |
c906108c | 21552 | break; |
74921315 | 21553 | case DW_TAG_imported_declaration: |
5c4e30ca | 21554 | case DW_TAG_namespace: |
f1e6e072 | 21555 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 21556 | list_to_add = &global_symbols; |
5c4e30ca | 21557 | break; |
530e8392 KB |
21558 | case DW_TAG_module: |
21559 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21560 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
21561 | list_to_add = &global_symbols; | |
21562 | break; | |
4357ac6c | 21563 | case DW_TAG_common_block: |
f1e6e072 | 21564 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
21565 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
21566 | add_symbol_to_list (sym, cu->list_in_scope); | |
21567 | break; | |
c906108c SS |
21568 | default: |
21569 | /* Not a tag we recognize. Hopefully we aren't processing | |
21570 | trash data, but since we must specifically ignore things | |
21571 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21572 | this point. */ |
e2e0b3e5 | 21573 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 21574 | dwarf_tag_name (die->tag)); |
c906108c SS |
21575 | break; |
21576 | } | |
df8a16a1 | 21577 | |
e37fd15a SW |
21578 | if (suppress_add) |
21579 | { | |
21580 | sym->hash_next = objfile->template_symbols; | |
21581 | objfile->template_symbols = sym; | |
21582 | list_to_add = NULL; | |
21583 | } | |
21584 | ||
21585 | if (list_to_add != NULL) | |
21586 | add_symbol_to_list (sym, list_to_add); | |
21587 | ||
df8a16a1 DJ |
21588 | /* For the benefit of old versions of GCC, check for anonymous |
21589 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21590 | if (!cu->processing_has_namespace_info |
94af9270 | 21591 | && cu->language == language_cplus) |
a10964d1 | 21592 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
21593 | } |
21594 | return (sym); | |
21595 | } | |
21596 | ||
98bfdba5 PA |
21597 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21598 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21599 | standard (v4) is not entirely clear about the meaning of using | |
21600 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21601 | wider than the data. The conclusion of a discussion on the DWARF | |
21602 | list was that this is unspecified. We choose to always zero-extend | |
21603 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21604 | |
98bfdba5 | 21605 | static gdb_byte * |
ff39bb5e | 21606 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21607 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21608 | { |
518817b3 | 21609 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
21610 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21611 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21612 | LONGEST l = DW_UNSND (attr); |
21613 | ||
21614 | if (bits < sizeof (*value) * 8) | |
21615 | { | |
21616 | l &= ((LONGEST) 1 << bits) - 1; | |
21617 | *value = l; | |
21618 | } | |
21619 | else if (bits == sizeof (*value) * 8) | |
21620 | *value = l; | |
21621 | else | |
21622 | { | |
224c3ddb | 21623 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21624 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21625 | return bytes; | |
21626 | } | |
21627 | ||
21628 | return NULL; | |
21629 | } | |
21630 | ||
21631 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21632 | the value does not fit in *VALUE, set *BYTES - either already | |
21633 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21634 | or, set *BATON, if we translated the constant to a location | |
21635 | expression. */ | |
21636 | ||
21637 | static void | |
ff39bb5e | 21638 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21639 | const char *name, struct obstack *obstack, |
21640 | struct dwarf2_cu *cu, | |
d521ce57 | 21641 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21642 | struct dwarf2_locexpr_baton **baton) |
21643 | { | |
518817b3 | 21644 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 21645 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21646 | struct dwarf_block *blk; |
98bfdba5 PA |
21647 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21648 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21649 | ||
21650 | *value = 0; | |
21651 | *bytes = NULL; | |
21652 | *baton = NULL; | |
c906108c SS |
21653 | |
21654 | switch (attr->form) | |
21655 | { | |
21656 | case DW_FORM_addr: | |
3019eac3 | 21657 | case DW_FORM_GNU_addr_index: |
ac56253d | 21658 | { |
ac56253d TT |
21659 | gdb_byte *data; |
21660 | ||
98bfdba5 PA |
21661 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21662 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21663 | cu_header->addr_size, |
98bfdba5 | 21664 | TYPE_LENGTH (type)); |
ac56253d TT |
21665 | /* Symbols of this form are reasonably rare, so we just |
21666 | piggyback on the existing location code rather than writing | |
21667 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21668 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21669 | (*baton)->per_cu = cu->per_cu; |
21670 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21671 | |
98bfdba5 | 21672 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21673 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21674 | (*baton)->data = data; |
ac56253d TT |
21675 | |
21676 | data[0] = DW_OP_addr; | |
21677 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21678 | byte_order, DW_ADDR (attr)); | |
21679 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21680 | } |
c906108c | 21681 | break; |
4ac36638 | 21682 | case DW_FORM_string: |
93b5768b | 21683 | case DW_FORM_strp: |
3019eac3 | 21684 | case DW_FORM_GNU_str_index: |
36586728 | 21685 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21686 | /* DW_STRING is already allocated on the objfile obstack, point |
21687 | directly to it. */ | |
d521ce57 | 21688 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21689 | break; |
c906108c SS |
21690 | case DW_FORM_block1: |
21691 | case DW_FORM_block2: | |
21692 | case DW_FORM_block4: | |
21693 | case DW_FORM_block: | |
2dc7f7b3 | 21694 | case DW_FORM_exprloc: |
0224619f | 21695 | case DW_FORM_data16: |
c906108c | 21696 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21697 | if (TYPE_LENGTH (type) != blk->size) |
21698 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21699 | TYPE_LENGTH (type)); | |
21700 | *bytes = blk->data; | |
c906108c | 21701 | break; |
2df3850c JM |
21702 | |
21703 | /* The DW_AT_const_value attributes are supposed to carry the | |
21704 | symbol's value "represented as it would be on the target | |
21705 | architecture." By the time we get here, it's already been | |
21706 | converted to host endianness, so we just need to sign- or | |
21707 | zero-extend it as appropriate. */ | |
21708 | case DW_FORM_data1: | |
3aef2284 | 21709 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21710 | break; |
c906108c | 21711 | case DW_FORM_data2: |
3aef2284 | 21712 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21713 | break; |
c906108c | 21714 | case DW_FORM_data4: |
3aef2284 | 21715 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21716 | break; |
c906108c | 21717 | case DW_FORM_data8: |
3aef2284 | 21718 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21719 | break; |
21720 | ||
c906108c | 21721 | case DW_FORM_sdata: |
663c44ac | 21722 | case DW_FORM_implicit_const: |
98bfdba5 | 21723 | *value = DW_SND (attr); |
2df3850c JM |
21724 | break; |
21725 | ||
c906108c | 21726 | case DW_FORM_udata: |
98bfdba5 | 21727 | *value = DW_UNSND (attr); |
c906108c | 21728 | break; |
2df3850c | 21729 | |
c906108c | 21730 | default: |
4d3c2250 | 21731 | complaint (&symfile_complaints, |
e2e0b3e5 | 21732 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21733 | dwarf_form_name (attr->form)); |
98bfdba5 | 21734 | *value = 0; |
c906108c SS |
21735 | break; |
21736 | } | |
21737 | } | |
21738 | ||
2df3850c | 21739 | |
98bfdba5 PA |
21740 | /* Copy constant value from an attribute to a symbol. */ |
21741 | ||
2df3850c | 21742 | static void |
ff39bb5e | 21743 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21744 | struct dwarf2_cu *cu) |
2df3850c | 21745 | { |
518817b3 | 21746 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 21747 | LONGEST value; |
d521ce57 | 21748 | const gdb_byte *bytes; |
98bfdba5 | 21749 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21750 | |
98bfdba5 PA |
21751 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
21752 | SYMBOL_PRINT_NAME (sym), | |
21753 | &objfile->objfile_obstack, cu, | |
21754 | &value, &bytes, &baton); | |
2df3850c | 21755 | |
98bfdba5 PA |
21756 | if (baton != NULL) |
21757 | { | |
98bfdba5 | 21758 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21759 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21760 | } |
21761 | else if (bytes != NULL) | |
21762 | { | |
21763 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21764 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21765 | } |
21766 | else | |
21767 | { | |
21768 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21769 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21770 | } |
2df3850c JM |
21771 | } |
21772 | ||
c906108c SS |
21773 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21774 | ||
21775 | static struct type * | |
e7c27a73 | 21776 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21777 | { |
c906108c | 21778 | struct attribute *type_attr; |
c906108c | 21779 | |
e142c38c | 21780 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21781 | if (!type_attr) |
21782 | { | |
518817b3 | 21783 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21784 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21785 | return objfile_type (objfile)->builtin_void; |
c906108c | 21786 | } |
348e048f | 21787 | |
673bfd45 | 21788 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21789 | } |
21790 | ||
b4ba55a1 JB |
21791 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21792 | that allows to find parallel types through that information instead | |
21793 | of having to do expensive parallel lookups by type name. */ | |
21794 | ||
21795 | static int | |
21796 | need_gnat_info (struct dwarf2_cu *cu) | |
21797 | { | |
de4cb04a JB |
21798 | /* Assume that the Ada compiler was GNAT, which always produces |
21799 | the auxiliary information. */ | |
21800 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21801 | } |
21802 | ||
b4ba55a1 JB |
21803 | /* Return the auxiliary type of the die in question using its |
21804 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21805 | attribute is not present. */ | |
21806 | ||
21807 | static struct type * | |
21808 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21809 | { | |
b4ba55a1 | 21810 | struct attribute *type_attr; |
b4ba55a1 JB |
21811 | |
21812 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21813 | if (!type_attr) | |
21814 | return NULL; | |
21815 | ||
673bfd45 | 21816 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21817 | } |
21818 | ||
21819 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21820 | descriptive type accordingly. */ | |
21821 | ||
21822 | static void | |
21823 | set_descriptive_type (struct type *type, struct die_info *die, | |
21824 | struct dwarf2_cu *cu) | |
21825 | { | |
21826 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21827 | ||
21828 | if (descriptive_type) | |
21829 | { | |
21830 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21831 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21832 | } | |
21833 | } | |
21834 | ||
c906108c SS |
21835 | /* Return the containing type of the die in question using its |
21836 | DW_AT_containing_type attribute. */ | |
21837 | ||
21838 | static struct type * | |
e7c27a73 | 21839 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21840 | { |
c906108c | 21841 | struct attribute *type_attr; |
518817b3 | 21842 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21843 | |
e142c38c | 21844 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21845 | if (!type_attr) |
21846 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21847 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21848 | |
673bfd45 | 21849 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21850 | } |
21851 | ||
ac9ec31b DE |
21852 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21853 | ||
21854 | static struct type * | |
21855 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21856 | { | |
518817b3 SM |
21857 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21858 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
21859 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
21860 | char *message, *saved; | |
21861 | ||
9d8780f0 | 21862 | message = xstrprintf (_("<unknown type in %s, CU %s, DIE %s>"), |
4262abfb | 21863 | objfile_name (objfile), |
9d8780f0 SM |
21864 | sect_offset_str (cu->header.sect_off), |
21865 | sect_offset_str (die->sect_off)); | |
224c3ddb SM |
21866 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
21867 | message, strlen (message)); | |
ac9ec31b DE |
21868 | xfree (message); |
21869 | ||
19f392bc | 21870 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21871 | } |
21872 | ||
673bfd45 | 21873 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21874 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21875 | DW_AT_containing_type. | |
673bfd45 DE |
21876 | If there is no type substitute an error marker. */ |
21877 | ||
c906108c | 21878 | static struct type * |
ff39bb5e | 21879 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21880 | struct dwarf2_cu *cu) |
c906108c | 21881 | { |
518817b3 SM |
21882 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21883 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21884 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21885 | struct type *this_type; |
21886 | ||
ac9ec31b DE |
21887 | gdb_assert (attr->name == DW_AT_type |
21888 | || attr->name == DW_AT_GNAT_descriptive_type | |
21889 | || attr->name == DW_AT_containing_type); | |
21890 | ||
673bfd45 DE |
21891 | /* First see if we have it cached. */ |
21892 | ||
36586728 TT |
21893 | if (attr->form == DW_FORM_GNU_ref_alt) |
21894 | { | |
21895 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 21896 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 21897 | |
ed2dc618 SM |
21898 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21899 | dwarf2_per_objfile); | |
9c541725 | 21900 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 21901 | } |
7771576e | 21902 | else if (attr_form_is_ref (attr)) |
673bfd45 | 21903 | { |
9c541725 | 21904 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 21905 | |
9c541725 | 21906 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 21907 | } |
55f1336d | 21908 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21909 | { |
ac9ec31b | 21910 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21911 | |
ac9ec31b | 21912 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21913 | } |
21914 | else | |
21915 | { | |
ac9ec31b DE |
21916 | complaint (&symfile_complaints, |
21917 | _("Dwarf Error: Bad type attribute %s in DIE" | |
9d8780f0 SM |
21918 | " at %s [in module %s]"), |
21919 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21920 | objfile_name (objfile)); |
ac9ec31b | 21921 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21922 | } |
21923 | ||
21924 | /* If not cached we need to read it in. */ | |
21925 | ||
21926 | if (this_type == NULL) | |
21927 | { | |
ac9ec31b | 21928 | struct die_info *type_die = NULL; |
673bfd45 DE |
21929 | struct dwarf2_cu *type_cu = cu; |
21930 | ||
7771576e | 21931 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
21932 | type_die = follow_die_ref (die, attr, &type_cu); |
21933 | if (type_die == NULL) | |
21934 | return build_error_marker_type (cu, die); | |
21935 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21936 | from an inter-CU reference and the type's CU got expanded before |
21937 | ours. */ | |
ac9ec31b | 21938 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21939 | } |
21940 | ||
21941 | /* If we still don't have a type use an error marker. */ | |
21942 | ||
21943 | if (this_type == NULL) | |
ac9ec31b | 21944 | return build_error_marker_type (cu, die); |
673bfd45 | 21945 | |
f792889a | 21946 | return this_type; |
c906108c SS |
21947 | } |
21948 | ||
673bfd45 DE |
21949 | /* Return the type in DIE, CU. |
21950 | Returns NULL for invalid types. | |
21951 | ||
02142a6c | 21952 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21953 | and only reads the die in if necessary. |
21954 | ||
21955 | NOTE: This can be called when reading in partial or full symbols. */ | |
21956 | ||
f792889a | 21957 | static struct type * |
e7c27a73 | 21958 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21959 | { |
f792889a DJ |
21960 | struct type *this_type; |
21961 | ||
21962 | this_type = get_die_type (die, cu); | |
21963 | if (this_type) | |
21964 | return this_type; | |
21965 | ||
673bfd45 DE |
21966 | return read_type_die_1 (die, cu); |
21967 | } | |
21968 | ||
21969 | /* Read the type in DIE, CU. | |
21970 | Returns NULL for invalid types. */ | |
21971 | ||
21972 | static struct type * | |
21973 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21974 | { | |
21975 | struct type *this_type = NULL; | |
21976 | ||
c906108c SS |
21977 | switch (die->tag) |
21978 | { | |
21979 | case DW_TAG_class_type: | |
680b30c7 | 21980 | case DW_TAG_interface_type: |
c906108c SS |
21981 | case DW_TAG_structure_type: |
21982 | case DW_TAG_union_type: | |
f792889a | 21983 | this_type = read_structure_type (die, cu); |
c906108c SS |
21984 | break; |
21985 | case DW_TAG_enumeration_type: | |
f792889a | 21986 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21987 | break; |
21988 | case DW_TAG_subprogram: | |
21989 | case DW_TAG_subroutine_type: | |
edb3359d | 21990 | case DW_TAG_inlined_subroutine: |
f792889a | 21991 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21992 | break; |
21993 | case DW_TAG_array_type: | |
f792889a | 21994 | this_type = read_array_type (die, cu); |
c906108c | 21995 | break; |
72019c9c | 21996 | case DW_TAG_set_type: |
f792889a | 21997 | this_type = read_set_type (die, cu); |
72019c9c | 21998 | break; |
c906108c | 21999 | case DW_TAG_pointer_type: |
f792889a | 22000 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22001 | break; |
22002 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22003 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22004 | break; |
22005 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22006 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22007 | break; | |
22008 | case DW_TAG_rvalue_reference_type: | |
22009 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22010 | break; |
22011 | case DW_TAG_const_type: | |
f792889a | 22012 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22013 | break; |
22014 | case DW_TAG_volatile_type: | |
f792889a | 22015 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22016 | break; |
06d66ee9 TT |
22017 | case DW_TAG_restrict_type: |
22018 | this_type = read_tag_restrict_type (die, cu); | |
22019 | break; | |
c906108c | 22020 | case DW_TAG_string_type: |
f792889a | 22021 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22022 | break; |
22023 | case DW_TAG_typedef: | |
f792889a | 22024 | this_type = read_typedef (die, cu); |
c906108c | 22025 | break; |
a02abb62 | 22026 | case DW_TAG_subrange_type: |
f792889a | 22027 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22028 | break; |
c906108c | 22029 | case DW_TAG_base_type: |
f792889a | 22030 | this_type = read_base_type (die, cu); |
c906108c | 22031 | break; |
81a17f79 | 22032 | case DW_TAG_unspecified_type: |
f792889a | 22033 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22034 | break; |
0114d602 DJ |
22035 | case DW_TAG_namespace: |
22036 | this_type = read_namespace_type (die, cu); | |
22037 | break; | |
f55ee35c JK |
22038 | case DW_TAG_module: |
22039 | this_type = read_module_type (die, cu); | |
22040 | break; | |
a2c2acaf MW |
22041 | case DW_TAG_atomic_type: |
22042 | this_type = read_tag_atomic_type (die, cu); | |
22043 | break; | |
c906108c | 22044 | default: |
3e43a32a MS |
22045 | complaint (&symfile_complaints, |
22046 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 22047 | dwarf_tag_name (die->tag)); |
c906108c SS |
22048 | break; |
22049 | } | |
63d06c5c | 22050 | |
f792889a | 22051 | return this_type; |
63d06c5c DC |
22052 | } |
22053 | ||
abc72ce4 DE |
22054 | /* See if we can figure out if the class lives in a namespace. We do |
22055 | this by looking for a member function; its demangled name will | |
22056 | contain namespace info, if there is any. | |
22057 | Return the computed name or NULL. | |
22058 | Space for the result is allocated on the objfile's obstack. | |
22059 | This is the full-die version of guess_partial_die_structure_name. | |
22060 | In this case we know DIE has no useful parent. */ | |
22061 | ||
22062 | static char * | |
22063 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
22064 | { | |
22065 | struct die_info *spec_die; | |
22066 | struct dwarf2_cu *spec_cu; | |
22067 | struct die_info *child; | |
518817b3 | 22068 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22069 | |
22070 | spec_cu = cu; | |
22071 | spec_die = die_specification (die, &spec_cu); | |
22072 | if (spec_die != NULL) | |
22073 | { | |
22074 | die = spec_die; | |
22075 | cu = spec_cu; | |
22076 | } | |
22077 | ||
22078 | for (child = die->child; | |
22079 | child != NULL; | |
22080 | child = child->sibling) | |
22081 | { | |
22082 | if (child->tag == DW_TAG_subprogram) | |
22083 | { | |
73b9be8b | 22084 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22085 | |
7d45c7c3 | 22086 | if (linkage_name != NULL) |
abc72ce4 DE |
22087 | { |
22088 | char *actual_name | |
22089 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 22090 | linkage_name); |
abc72ce4 DE |
22091 | char *name = NULL; |
22092 | ||
22093 | if (actual_name != NULL) | |
22094 | { | |
15d034d0 | 22095 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22096 | |
22097 | if (die_name != NULL | |
22098 | && strcmp (die_name, actual_name) != 0) | |
22099 | { | |
22100 | /* Strip off the class name from the full name. | |
22101 | We want the prefix. */ | |
22102 | int die_name_len = strlen (die_name); | |
22103 | int actual_name_len = strlen (actual_name); | |
22104 | ||
22105 | /* Test for '::' as a sanity check. */ | |
22106 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
22107 | && actual_name[actual_name_len |
22108 | - die_name_len - 1] == ':') | |
224c3ddb | 22109 | name = (char *) obstack_copy0 ( |
e3b94546 | 22110 | &objfile->per_bfd->storage_obstack, |
224c3ddb | 22111 | actual_name, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22112 | } |
22113 | } | |
22114 | xfree (actual_name); | |
22115 | return name; | |
22116 | } | |
22117 | } | |
22118 | } | |
22119 | ||
22120 | return NULL; | |
22121 | } | |
22122 | ||
96408a79 SA |
22123 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22124 | prefix part in such case. See | |
22125 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22126 | ||
a121b7c1 | 22127 | static const char * |
96408a79 SA |
22128 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22129 | { | |
22130 | struct attribute *attr; | |
e6a959d6 | 22131 | const char *base; |
96408a79 SA |
22132 | |
22133 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22134 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22135 | return NULL; | |
22136 | ||
7d45c7c3 | 22137 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22138 | return NULL; |
22139 | ||
73b9be8b | 22140 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22141 | if (attr == NULL || DW_STRING (attr) == NULL) |
22142 | return NULL; | |
22143 | ||
22144 | /* dwarf2_name had to be already called. */ | |
22145 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22146 | ||
22147 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22148 | base = strrchr (DW_STRING (attr), ':'); | |
22149 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22150 | return ""; | |
22151 | ||
518817b3 | 22152 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e3b94546 | 22153 | return (char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
22154 | DW_STRING (attr), |
22155 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22156 | } |
22157 | ||
fdde2d81 | 22158 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22159 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22160 | |
0114d602 DJ |
22161 | For example, if we're within the method foo() in the following |
22162 | code: | |
22163 | ||
22164 | namespace N { | |
22165 | class C { | |
22166 | void foo () { | |
22167 | } | |
22168 | }; | |
22169 | } | |
22170 | ||
22171 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22172 | |
0d5cff50 | 22173 | static const char * |
e142c38c | 22174 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22175 | { |
518817b3 SM |
22176 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22177 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22178 | struct die_info *parent, *spec_die; |
22179 | struct dwarf2_cu *spec_cu; | |
22180 | struct type *parent_type; | |
a121b7c1 | 22181 | const char *retval; |
63d06c5c | 22182 | |
9c37b5ae | 22183 | if (cu->language != language_cplus |
c44af4eb TT |
22184 | && cu->language != language_fortran && cu->language != language_d |
22185 | && cu->language != language_rust) | |
0114d602 DJ |
22186 | return ""; |
22187 | ||
96408a79 SA |
22188 | retval = anonymous_struct_prefix (die, cu); |
22189 | if (retval) | |
22190 | return retval; | |
22191 | ||
0114d602 DJ |
22192 | /* We have to be careful in the presence of DW_AT_specification. |
22193 | For example, with GCC 3.4, given the code | |
22194 | ||
22195 | namespace N { | |
22196 | void foo() { | |
22197 | // Definition of N::foo. | |
22198 | } | |
22199 | } | |
22200 | ||
22201 | then we'll have a tree of DIEs like this: | |
22202 | ||
22203 | 1: DW_TAG_compile_unit | |
22204 | 2: DW_TAG_namespace // N | |
22205 | 3: DW_TAG_subprogram // declaration of N::foo | |
22206 | 4: DW_TAG_subprogram // definition of N::foo | |
22207 | DW_AT_specification // refers to die #3 | |
22208 | ||
22209 | Thus, when processing die #4, we have to pretend that we're in | |
22210 | the context of its DW_AT_specification, namely the contex of die | |
22211 | #3. */ | |
22212 | spec_cu = cu; | |
22213 | spec_die = die_specification (die, &spec_cu); | |
22214 | if (spec_die == NULL) | |
22215 | parent = die->parent; | |
22216 | else | |
63d06c5c | 22217 | { |
0114d602 DJ |
22218 | parent = spec_die->parent; |
22219 | cu = spec_cu; | |
63d06c5c | 22220 | } |
0114d602 DJ |
22221 | |
22222 | if (parent == NULL) | |
22223 | return ""; | |
98bfdba5 PA |
22224 | else if (parent->building_fullname) |
22225 | { | |
22226 | const char *name; | |
22227 | const char *parent_name; | |
22228 | ||
22229 | /* It has been seen on RealView 2.2 built binaries, | |
22230 | DW_TAG_template_type_param types actually _defined_ as | |
22231 | children of the parent class: | |
22232 | ||
22233 | enum E {}; | |
22234 | template class <class Enum> Class{}; | |
22235 | Class<enum E> class_e; | |
22236 | ||
22237 | 1: DW_TAG_class_type (Class) | |
22238 | 2: DW_TAG_enumeration_type (E) | |
22239 | 3: DW_TAG_enumerator (enum1:0) | |
22240 | 3: DW_TAG_enumerator (enum2:1) | |
22241 | ... | |
22242 | 2: DW_TAG_template_type_param | |
22243 | DW_AT_type DW_FORM_ref_udata (E) | |
22244 | ||
22245 | Besides being broken debug info, it can put GDB into an | |
22246 | infinite loop. Consider: | |
22247 | ||
22248 | When we're building the full name for Class<E>, we'll start | |
22249 | at Class, and go look over its template type parameters, | |
22250 | finding E. We'll then try to build the full name of E, and | |
22251 | reach here. We're now trying to build the full name of E, | |
22252 | and look over the parent DIE for containing scope. In the | |
22253 | broken case, if we followed the parent DIE of E, we'd again | |
22254 | find Class, and once again go look at its template type | |
22255 | arguments, etc., etc. Simply don't consider such parent die | |
22256 | as source-level parent of this die (it can't be, the language | |
22257 | doesn't allow it), and break the loop here. */ | |
22258 | name = dwarf2_name (die, cu); | |
22259 | parent_name = dwarf2_name (parent, cu); | |
22260 | complaint (&symfile_complaints, | |
22261 | _("template param type '%s' defined within parent '%s'"), | |
22262 | name ? name : "<unknown>", | |
22263 | parent_name ? parent_name : "<unknown>"); | |
22264 | return ""; | |
22265 | } | |
63d06c5c | 22266 | else |
0114d602 DJ |
22267 | switch (parent->tag) |
22268 | { | |
63d06c5c | 22269 | case DW_TAG_namespace: |
0114d602 | 22270 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22271 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22272 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22273 | Work around this problem here. */ | |
22274 | if (cu->language == language_cplus | |
22275 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
22276 | return ""; | |
0114d602 DJ |
22277 | /* We give a name to even anonymous namespaces. */ |
22278 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 22279 | case DW_TAG_class_type: |
680b30c7 | 22280 | case DW_TAG_interface_type: |
63d06c5c | 22281 | case DW_TAG_structure_type: |
0114d602 | 22282 | case DW_TAG_union_type: |
f55ee35c | 22283 | case DW_TAG_module: |
0114d602 DJ |
22284 | parent_type = read_type_die (parent, cu); |
22285 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
22286 | return TYPE_TAG_NAME (parent_type); | |
22287 | else | |
22288 | /* An anonymous structure is only allowed non-static data | |
22289 | members; no typedefs, no member functions, et cetera. | |
22290 | So it does not need a prefix. */ | |
22291 | return ""; | |
abc72ce4 | 22292 | case DW_TAG_compile_unit: |
95554aad | 22293 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22294 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22295 | if (cu->language == language_cplus | |
8b70b953 | 22296 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
22297 | && die->child != NULL |
22298 | && (die->tag == DW_TAG_class_type | |
22299 | || die->tag == DW_TAG_structure_type | |
22300 | || die->tag == DW_TAG_union_type)) | |
22301 | { | |
22302 | char *name = guess_full_die_structure_name (die, cu); | |
22303 | if (name != NULL) | |
22304 | return name; | |
22305 | } | |
22306 | return ""; | |
3d567982 TT |
22307 | case DW_TAG_enumeration_type: |
22308 | parent_type = read_type_die (parent, cu); | |
22309 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22310 | { | |
22311 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
22312 | return TYPE_TAG_NAME (parent_type); | |
22313 | return ""; | |
22314 | } | |
22315 | /* Fall through. */ | |
63d06c5c | 22316 | default: |
8176b9b8 | 22317 | return determine_prefix (parent, cu); |
63d06c5c | 22318 | } |
63d06c5c DC |
22319 | } |
22320 | ||
3e43a32a MS |
22321 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22322 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22323 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22324 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22325 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22326 | |
f55ee35c | 22327 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22328 | |
22329 | static char * | |
f55ee35c JK |
22330 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22331 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22332 | { |
f55ee35c | 22333 | const char *lead = ""; |
5c315b68 | 22334 | const char *sep; |
63d06c5c | 22335 | |
3e43a32a MS |
22336 | if (suffix == NULL || suffix[0] == '\0' |
22337 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22338 | sep = ""; |
45280282 IB |
22339 | else if (cu->language == language_d) |
22340 | { | |
22341 | /* For D, the 'main' function could be defined in any module, but it | |
22342 | should never be prefixed. */ | |
22343 | if (strcmp (suffix, "D main") == 0) | |
22344 | { | |
22345 | prefix = ""; | |
22346 | sep = ""; | |
22347 | } | |
22348 | else | |
22349 | sep = "."; | |
22350 | } | |
f55ee35c JK |
22351 | else if (cu->language == language_fortran && physname) |
22352 | { | |
22353 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22354 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22355 | ||
22356 | lead = "__"; | |
22357 | sep = "_MOD_"; | |
22358 | } | |
987504bb JJ |
22359 | else |
22360 | sep = "::"; | |
63d06c5c | 22361 | |
6dd47d34 DE |
22362 | if (prefix == NULL) |
22363 | prefix = ""; | |
22364 | if (suffix == NULL) | |
22365 | suffix = ""; | |
22366 | ||
987504bb JJ |
22367 | if (obs == NULL) |
22368 | { | |
3e43a32a | 22369 | char *retval |
224c3ddb SM |
22370 | = ((char *) |
22371 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22372 | |
f55ee35c JK |
22373 | strcpy (retval, lead); |
22374 | strcat (retval, prefix); | |
6dd47d34 DE |
22375 | strcat (retval, sep); |
22376 | strcat (retval, suffix); | |
63d06c5c DC |
22377 | return retval; |
22378 | } | |
987504bb JJ |
22379 | else |
22380 | { | |
22381 | /* We have an obstack. */ | |
f55ee35c | 22382 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22383 | } |
63d06c5c DC |
22384 | } |
22385 | ||
c906108c SS |
22386 | /* Return sibling of die, NULL if no sibling. */ |
22387 | ||
f9aca02d | 22388 | static struct die_info * |
fba45db2 | 22389 | sibling_die (struct die_info *die) |
c906108c | 22390 | { |
639d11d3 | 22391 | return die->sibling; |
c906108c SS |
22392 | } |
22393 | ||
71c25dea TT |
22394 | /* Get name of a die, return NULL if not found. */ |
22395 | ||
15d034d0 TT |
22396 | static const char * |
22397 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22398 | struct obstack *obstack) |
22399 | { | |
22400 | if (name && cu->language == language_cplus) | |
22401 | { | |
2f408ecb | 22402 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22403 | |
2f408ecb | 22404 | if (!canon_name.empty ()) |
71c25dea | 22405 | { |
2f408ecb PA |
22406 | if (canon_name != name) |
22407 | name = (const char *) obstack_copy0 (obstack, | |
22408 | canon_name.c_str (), | |
22409 | canon_name.length ()); | |
71c25dea TT |
22410 | } |
22411 | } | |
22412 | ||
22413 | return name; | |
c906108c SS |
22414 | } |
22415 | ||
96553a0c DE |
22416 | /* Get name of a die, return NULL if not found. |
22417 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22418 | |
15d034d0 | 22419 | static const char * |
e142c38c | 22420 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22421 | { |
22422 | struct attribute *attr; | |
518817b3 | 22423 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22424 | |
e142c38c | 22425 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22426 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22427 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22428 | && die->tag != DW_TAG_class_type |
22429 | && die->tag != DW_TAG_interface_type | |
22430 | && die->tag != DW_TAG_structure_type | |
22431 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22432 | return NULL; |
22433 | ||
22434 | switch (die->tag) | |
22435 | { | |
22436 | case DW_TAG_compile_unit: | |
95554aad | 22437 | case DW_TAG_partial_unit: |
71c25dea TT |
22438 | /* Compilation units have a DW_AT_name that is a filename, not |
22439 | a source language identifier. */ | |
22440 | case DW_TAG_enumeration_type: | |
22441 | case DW_TAG_enumerator: | |
22442 | /* These tags always have simple identifiers already; no need | |
22443 | to canonicalize them. */ | |
22444 | return DW_STRING (attr); | |
907af001 | 22445 | |
96553a0c DE |
22446 | case DW_TAG_namespace: |
22447 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22448 | return DW_STRING (attr); | |
22449 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22450 | ||
907af001 UW |
22451 | case DW_TAG_class_type: |
22452 | case DW_TAG_interface_type: | |
22453 | case DW_TAG_structure_type: | |
22454 | case DW_TAG_union_type: | |
22455 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22456 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22457 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22458 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22459 | if (attr && DW_STRING (attr) |
61012eef GB |
22460 | && (startswith (DW_STRING (attr), "._") |
22461 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22462 | return NULL; |
53832f31 TT |
22463 | |
22464 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22465 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22466 | if (!attr || DW_STRING (attr) == NULL) | |
22467 | { | |
df5c6c50 | 22468 | char *demangled = NULL; |
53832f31 | 22469 | |
73b9be8b | 22470 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22471 | if (attr == NULL || DW_STRING (attr) == NULL) |
22472 | return NULL; | |
22473 | ||
df5c6c50 JK |
22474 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22475 | call for the same DIE. */ | |
22476 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 22477 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
22478 | |
22479 | if (demangled) | |
22480 | { | |
e6a959d6 | 22481 | const char *base; |
96408a79 | 22482 | |
53832f31 | 22483 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22484 | DW_STRING (attr) |
224c3ddb | 22485 | = ((const char *) |
e3b94546 | 22486 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 22487 | demangled, strlen (demangled))); |
53832f31 TT |
22488 | DW_STRING_IS_CANONICAL (attr) = 1; |
22489 | xfree (demangled); | |
96408a79 SA |
22490 | |
22491 | /* Strip any leading namespaces/classes, keep only the base name. | |
22492 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22493 | base = strrchr (DW_STRING (attr), ':'); | |
22494 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22495 | return &base[1]; | |
22496 | else | |
22497 | return DW_STRING (attr); | |
53832f31 TT |
22498 | } |
22499 | } | |
907af001 UW |
22500 | break; |
22501 | ||
71c25dea | 22502 | default: |
907af001 UW |
22503 | break; |
22504 | } | |
22505 | ||
22506 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22507 | { | |
22508 | DW_STRING (attr) | |
22509 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22510 | &objfile->per_bfd->storage_obstack); |
907af001 | 22511 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22512 | } |
907af001 | 22513 | return DW_STRING (attr); |
9219021c DC |
22514 | } |
22515 | ||
22516 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22517 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22518 | containing the return value on output. */ | |
9219021c DC |
22519 | |
22520 | static struct die_info * | |
f2f0e013 | 22521 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22522 | { |
22523 | struct attribute *attr; | |
9219021c | 22524 | |
f2f0e013 | 22525 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22526 | if (attr == NULL) |
22527 | return NULL; | |
22528 | ||
f2f0e013 | 22529 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22530 | } |
22531 | ||
c906108c SS |
22532 | /* Convert a DIE tag into its string name. */ |
22533 | ||
f39c6ffd | 22534 | static const char * |
aa1ee363 | 22535 | dwarf_tag_name (unsigned tag) |
c906108c | 22536 | { |
f39c6ffd TT |
22537 | const char *name = get_DW_TAG_name (tag); |
22538 | ||
22539 | if (name == NULL) | |
22540 | return "DW_TAG_<unknown>"; | |
22541 | ||
22542 | return name; | |
c906108c SS |
22543 | } |
22544 | ||
22545 | /* Convert a DWARF attribute code into its string name. */ | |
22546 | ||
f39c6ffd | 22547 | static const char * |
aa1ee363 | 22548 | dwarf_attr_name (unsigned attr) |
c906108c | 22549 | { |
f39c6ffd TT |
22550 | const char *name; |
22551 | ||
c764a876 | 22552 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22553 | if (attr == DW_AT_MIPS_fde) |
22554 | return "DW_AT_MIPS_fde"; | |
22555 | #else | |
22556 | if (attr == DW_AT_HP_block_index) | |
22557 | return "DW_AT_HP_block_index"; | |
c764a876 | 22558 | #endif |
f39c6ffd TT |
22559 | |
22560 | name = get_DW_AT_name (attr); | |
22561 | ||
22562 | if (name == NULL) | |
22563 | return "DW_AT_<unknown>"; | |
22564 | ||
22565 | return name; | |
c906108c SS |
22566 | } |
22567 | ||
22568 | /* Convert a DWARF value form code into its string name. */ | |
22569 | ||
f39c6ffd | 22570 | static const char * |
aa1ee363 | 22571 | dwarf_form_name (unsigned form) |
c906108c | 22572 | { |
f39c6ffd TT |
22573 | const char *name = get_DW_FORM_name (form); |
22574 | ||
22575 | if (name == NULL) | |
22576 | return "DW_FORM_<unknown>"; | |
22577 | ||
22578 | return name; | |
c906108c SS |
22579 | } |
22580 | ||
a121b7c1 | 22581 | static const char * |
fba45db2 | 22582 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
22583 | { |
22584 | if (mybool) | |
22585 | return "TRUE"; | |
22586 | else | |
22587 | return "FALSE"; | |
22588 | } | |
22589 | ||
22590 | /* Convert a DWARF type code into its string name. */ | |
22591 | ||
f39c6ffd | 22592 | static const char * |
aa1ee363 | 22593 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 22594 | { |
f39c6ffd | 22595 | const char *name = get_DW_ATE_name (enc); |
c906108c | 22596 | |
f39c6ffd TT |
22597 | if (name == NULL) |
22598 | return "DW_ATE_<unknown>"; | |
c906108c | 22599 | |
f39c6ffd | 22600 | return name; |
c906108c | 22601 | } |
c906108c | 22602 | |
f9aca02d | 22603 | static void |
d97bc12b | 22604 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22605 | { |
22606 | unsigned int i; | |
22607 | ||
d97bc12b | 22608 | print_spaces (indent, f); |
9d8780f0 | 22609 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22610 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22611 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22612 | |
22613 | if (die->parent != NULL) | |
22614 | { | |
22615 | print_spaces (indent, f); | |
9d8780f0 SM |
22616 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22617 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22618 | } |
22619 | ||
22620 | print_spaces (indent, f); | |
22621 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22622 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22623 | |
d97bc12b DE |
22624 | print_spaces (indent, f); |
22625 | fprintf_unfiltered (f, " attributes:\n"); | |
22626 | ||
c906108c SS |
22627 | for (i = 0; i < die->num_attrs; ++i) |
22628 | { | |
d97bc12b DE |
22629 | print_spaces (indent, f); |
22630 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22631 | dwarf_attr_name (die->attrs[i].name), |
22632 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22633 | |
c906108c SS |
22634 | switch (die->attrs[i].form) |
22635 | { | |
c906108c | 22636 | case DW_FORM_addr: |
3019eac3 | 22637 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22638 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22639 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22640 | break; |
22641 | case DW_FORM_block2: | |
22642 | case DW_FORM_block4: | |
22643 | case DW_FORM_block: | |
22644 | case DW_FORM_block1: | |
56eb65bd SP |
22645 | fprintf_unfiltered (f, "block: size %s", |
22646 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22647 | break; |
2dc7f7b3 | 22648 | case DW_FORM_exprloc: |
56eb65bd SP |
22649 | fprintf_unfiltered (f, "expression: size %s", |
22650 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22651 | break; |
0224619f JK |
22652 | case DW_FORM_data16: |
22653 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22654 | break; | |
4568ecf9 DE |
22655 | case DW_FORM_ref_addr: |
22656 | fprintf_unfiltered (f, "ref address: "); | |
22657 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22658 | break; | |
36586728 TT |
22659 | case DW_FORM_GNU_ref_alt: |
22660 | fprintf_unfiltered (f, "alt ref address: "); | |
22661 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22662 | break; | |
10b3939b DJ |
22663 | case DW_FORM_ref1: |
22664 | case DW_FORM_ref2: | |
22665 | case DW_FORM_ref4: | |
4568ecf9 DE |
22666 | case DW_FORM_ref8: |
22667 | case DW_FORM_ref_udata: | |
d97bc12b | 22668 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22669 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22670 | break; |
c906108c SS |
22671 | case DW_FORM_data1: |
22672 | case DW_FORM_data2: | |
22673 | case DW_FORM_data4: | |
ce5d95e1 | 22674 | case DW_FORM_data8: |
c906108c SS |
22675 | case DW_FORM_udata: |
22676 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22677 | fprintf_unfiltered (f, "constant: %s", |
22678 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22679 | break; |
2dc7f7b3 TT |
22680 | case DW_FORM_sec_offset: |
22681 | fprintf_unfiltered (f, "section offset: %s", | |
22682 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22683 | break; | |
55f1336d | 22684 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22685 | fprintf_unfiltered (f, "signature: %s", |
22686 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22687 | break; |
c906108c | 22688 | case DW_FORM_string: |
4bdf3d34 | 22689 | case DW_FORM_strp: |
43988095 | 22690 | case DW_FORM_line_strp: |
3019eac3 | 22691 | case DW_FORM_GNU_str_index: |
36586728 | 22692 | case DW_FORM_GNU_strp_alt: |
8285870a | 22693 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22694 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22695 | ? DW_STRING (&die->attrs[i]) : "", |
22696 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22697 | break; |
22698 | case DW_FORM_flag: | |
22699 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22700 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22701 | else |
d97bc12b | 22702 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22703 | break; |
2dc7f7b3 TT |
22704 | case DW_FORM_flag_present: |
22705 | fprintf_unfiltered (f, "flag: TRUE"); | |
22706 | break; | |
a8329558 | 22707 | case DW_FORM_indirect: |
0963b4bd MS |
22708 | /* The reader will have reduced the indirect form to |
22709 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
22710 | fprintf_unfiltered (f, |
22711 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 22712 | break; |
663c44ac JK |
22713 | case DW_FORM_implicit_const: |
22714 | fprintf_unfiltered (f, "constant: %s", | |
22715 | plongest (DW_SND (&die->attrs[i]))); | |
22716 | break; | |
c906108c | 22717 | default: |
d97bc12b | 22718 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22719 | die->attrs[i].form); |
d97bc12b | 22720 | break; |
c906108c | 22721 | } |
d97bc12b | 22722 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22723 | } |
22724 | } | |
22725 | ||
f9aca02d | 22726 | static void |
d97bc12b | 22727 | dump_die_for_error (struct die_info *die) |
c906108c | 22728 | { |
d97bc12b DE |
22729 | dump_die_shallow (gdb_stderr, 0, die); |
22730 | } | |
22731 | ||
22732 | static void | |
22733 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22734 | { | |
22735 | int indent = level * 4; | |
22736 | ||
22737 | gdb_assert (die != NULL); | |
22738 | ||
22739 | if (level >= max_level) | |
22740 | return; | |
22741 | ||
22742 | dump_die_shallow (f, indent, die); | |
22743 | ||
22744 | if (die->child != NULL) | |
c906108c | 22745 | { |
d97bc12b DE |
22746 | print_spaces (indent, f); |
22747 | fprintf_unfiltered (f, " Children:"); | |
22748 | if (level + 1 < max_level) | |
22749 | { | |
22750 | fprintf_unfiltered (f, "\n"); | |
22751 | dump_die_1 (f, level + 1, max_level, die->child); | |
22752 | } | |
22753 | else | |
22754 | { | |
3e43a32a MS |
22755 | fprintf_unfiltered (f, |
22756 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22757 | } |
22758 | } | |
22759 | ||
22760 | if (die->sibling != NULL && level > 0) | |
22761 | { | |
22762 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22763 | } |
22764 | } | |
22765 | ||
d97bc12b DE |
22766 | /* This is called from the pdie macro in gdbinit.in. |
22767 | It's not static so gcc will keep a copy callable from gdb. */ | |
22768 | ||
22769 | void | |
22770 | dump_die (struct die_info *die, int max_level) | |
22771 | { | |
22772 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22773 | } | |
22774 | ||
f9aca02d | 22775 | static void |
51545339 | 22776 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22777 | { |
51545339 | 22778 | void **slot; |
c906108c | 22779 | |
9c541725 PA |
22780 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22781 | to_underlying (die->sect_off), | |
b64f50a1 | 22782 | INSERT); |
51545339 DJ |
22783 | |
22784 | *slot = die; | |
c906108c SS |
22785 | } |
22786 | ||
b64f50a1 JK |
22787 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
22788 | required kind. */ | |
22789 | ||
22790 | static sect_offset | |
ff39bb5e | 22791 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 22792 | { |
7771576e | 22793 | if (attr_form_is_ref (attr)) |
9c541725 | 22794 | return (sect_offset) DW_UNSND (attr); |
93311388 DE |
22795 | |
22796 | complaint (&symfile_complaints, | |
22797 | _("unsupported die ref attribute form: '%s'"), | |
22798 | dwarf_form_name (attr->form)); | |
9c541725 | 22799 | return {}; |
c906108c SS |
22800 | } |
22801 | ||
43bbcdc2 PH |
22802 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
22803 | * the value held by the attribute is not constant. */ | |
a02abb62 | 22804 | |
43bbcdc2 | 22805 | static LONGEST |
ff39bb5e | 22806 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 22807 | { |
663c44ac | 22808 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
22809 | return DW_SND (attr); |
22810 | else if (attr->form == DW_FORM_udata | |
22811 | || attr->form == DW_FORM_data1 | |
22812 | || attr->form == DW_FORM_data2 | |
22813 | || attr->form == DW_FORM_data4 | |
22814 | || attr->form == DW_FORM_data8) | |
22815 | return DW_UNSND (attr); | |
22816 | else | |
22817 | { | |
0224619f | 22818 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
3e43a32a MS |
22819 | complaint (&symfile_complaints, |
22820 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
22821 | dwarf_form_name (attr->form)); |
22822 | return default_value; | |
22823 | } | |
22824 | } | |
22825 | ||
348e048f DE |
22826 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22827 | On entry *REF_CU is the CU of SRC_DIE. | |
22828 | On exit *REF_CU is the CU of the result. */ | |
22829 | ||
22830 | static struct die_info * | |
ff39bb5e | 22831 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22832 | struct dwarf2_cu **ref_cu) |
22833 | { | |
22834 | struct die_info *die; | |
22835 | ||
7771576e | 22836 | if (attr_form_is_ref (attr)) |
348e048f | 22837 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22838 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22839 | die = follow_die_sig (src_die, attr, ref_cu); |
22840 | else | |
22841 | { | |
22842 | dump_die_for_error (src_die); | |
22843 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 22844 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
22845 | } |
22846 | ||
22847 | return die; | |
03dd20cc DJ |
22848 | } |
22849 | ||
5c631832 | 22850 | /* Follow reference OFFSET. |
673bfd45 DE |
22851 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22852 | On exit *REF_CU is the CU of the result. | |
22853 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22854 | |
f9aca02d | 22855 | static struct die_info * |
9c541725 | 22856 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22857 | struct dwarf2_cu **ref_cu) |
c906108c | 22858 | { |
10b3939b | 22859 | struct die_info temp_die; |
f2f0e013 | 22860 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
22861 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22862 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 22863 | |
348e048f DE |
22864 | gdb_assert (cu->per_cu != NULL); |
22865 | ||
98bfdba5 PA |
22866 | target_cu = cu; |
22867 | ||
3019eac3 | 22868 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22869 | { |
22870 | /* .debug_types CUs cannot reference anything outside their CU. | |
22871 | If they need to, they have to reference a signatured type via | |
55f1336d | 22872 | DW_FORM_ref_sig8. */ |
9c541725 | 22873 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 22874 | return NULL; |
348e048f | 22875 | } |
36586728 | 22876 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 22877 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
22878 | { |
22879 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22880 | |
9c541725 | 22881 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22882 | dwarf2_per_objfile); |
03dd20cc DJ |
22883 | |
22884 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
22885 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
22886 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 22887 | |
10b3939b DJ |
22888 | target_cu = per_cu->cu; |
22889 | } | |
98bfdba5 PA |
22890 | else if (cu->dies == NULL) |
22891 | { | |
22892 | /* We're loading full DIEs during partial symbol reading. */ | |
22893 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 22894 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 22895 | } |
c906108c | 22896 | |
f2f0e013 | 22897 | *ref_cu = target_cu; |
9c541725 | 22898 | temp_die.sect_off = sect_off; |
9a3c8263 | 22899 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22900 | &temp_die, |
22901 | to_underlying (sect_off)); | |
5c631832 | 22902 | } |
10b3939b | 22903 | |
5c631832 JK |
22904 | /* Follow reference attribute ATTR of SRC_DIE. |
22905 | On entry *REF_CU is the CU of SRC_DIE. | |
22906 | On exit *REF_CU is the CU of the result. */ | |
22907 | ||
22908 | static struct die_info * | |
ff39bb5e | 22909 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22910 | struct dwarf2_cu **ref_cu) |
22911 | { | |
9c541725 | 22912 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
22913 | struct dwarf2_cu *cu = *ref_cu; |
22914 | struct die_info *die; | |
22915 | ||
9c541725 | 22916 | die = follow_die_offset (sect_off, |
36586728 TT |
22917 | (attr->form == DW_FORM_GNU_ref_alt |
22918 | || cu->per_cu->is_dwz), | |
22919 | ref_cu); | |
5c631832 | 22920 | if (!die) |
9d8780f0 SM |
22921 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22922 | "at %s [in module %s]"), | |
22923 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 22924 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 22925 | |
5c631832 JK |
22926 | return die; |
22927 | } | |
22928 | ||
9c541725 | 22929 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 22930 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
22931 | dwarf2_locexpr_baton->data has lifetime of |
22932 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
22933 | |
22934 | struct dwarf2_locexpr_baton | |
9c541725 | 22935 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
22936 | struct dwarf2_per_cu_data *per_cu, |
22937 | CORE_ADDR (*get_frame_pc) (void *baton), | |
22938 | void *baton) | |
5c631832 | 22939 | { |
918dd910 | 22940 | struct dwarf2_cu *cu; |
5c631832 JK |
22941 | struct die_info *die; |
22942 | struct attribute *attr; | |
22943 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
22944 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
22945 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 22946 | |
918dd910 JK |
22947 | if (per_cu->cu == NULL) |
22948 | load_cu (per_cu); | |
22949 | cu = per_cu->cu; | |
cc12ce38 DE |
22950 | if (cu == NULL) |
22951 | { | |
22952 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22953 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22954 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22955 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22956 | } |
918dd910 | 22957 | |
9c541725 | 22958 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22959 | if (!die) |
9d8780f0 SM |
22960 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22961 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
22962 | |
22963 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22964 | if (!attr) | |
22965 | { | |
e103e986 JK |
22966 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22967 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22968 | |
e103e986 | 22969 | retval.data = NULL; |
5c631832 JK |
22970 | retval.size = 0; |
22971 | } | |
8cf6f0b1 TT |
22972 | else if (attr_form_is_section_offset (attr)) |
22973 | { | |
22974 | struct dwarf2_loclist_baton loclist_baton; | |
22975 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
22976 | size_t size; | |
22977 | ||
22978 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
22979 | ||
22980 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
22981 | &size, pc); | |
22982 | retval.size = size; | |
22983 | } | |
5c631832 JK |
22984 | else |
22985 | { | |
22986 | if (!attr_form_is_block (attr)) | |
9d8780f0 | 22987 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 22988 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 22989 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
22990 | |
22991 | retval.data = DW_BLOCK (attr)->data; | |
22992 | retval.size = DW_BLOCK (attr)->size; | |
22993 | } | |
22994 | retval.per_cu = cu->per_cu; | |
918dd910 | 22995 | |
ed2dc618 | 22996 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 22997 | |
5c631832 | 22998 | return retval; |
348e048f DE |
22999 | } |
23000 | ||
8b9737bf TT |
23001 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23002 | offset. */ | |
23003 | ||
23004 | struct dwarf2_locexpr_baton | |
23005 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23006 | struct dwarf2_per_cu_data *per_cu, | |
23007 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23008 | void *baton) | |
23009 | { | |
9c541725 | 23010 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23011 | |
9c541725 | 23012 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23013 | } |
23014 | ||
b6807d98 TT |
23015 | /* Write a constant of a given type as target-ordered bytes into |
23016 | OBSTACK. */ | |
23017 | ||
23018 | static const gdb_byte * | |
23019 | write_constant_as_bytes (struct obstack *obstack, | |
23020 | enum bfd_endian byte_order, | |
23021 | struct type *type, | |
23022 | ULONGEST value, | |
23023 | LONGEST *len) | |
23024 | { | |
23025 | gdb_byte *result; | |
23026 | ||
23027 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23028 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23029 | store_unsigned_integer (result, *len, byte_order, value); |
23030 | ||
23031 | return result; | |
23032 | } | |
23033 | ||
23034 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23035 | pointer to the constant bytes and set LEN to the length of the | |
23036 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23037 | does not have a DW_AT_const_value, return NULL. */ | |
23038 | ||
23039 | const gdb_byte * | |
9c541725 | 23040 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23041 | struct dwarf2_per_cu_data *per_cu, |
23042 | struct obstack *obstack, | |
23043 | LONGEST *len) | |
23044 | { | |
23045 | struct dwarf2_cu *cu; | |
23046 | struct die_info *die; | |
23047 | struct attribute *attr; | |
23048 | const gdb_byte *result = NULL; | |
23049 | struct type *type; | |
23050 | LONGEST value; | |
23051 | enum bfd_endian byte_order; | |
e3b94546 | 23052 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23053 | |
b6807d98 TT |
23054 | if (per_cu->cu == NULL) |
23055 | load_cu (per_cu); | |
23056 | cu = per_cu->cu; | |
cc12ce38 DE |
23057 | if (cu == NULL) |
23058 | { | |
23059 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23060 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23061 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23062 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23063 | } |
b6807d98 | 23064 | |
9c541725 | 23065 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23066 | if (!die) |
9d8780f0 SM |
23067 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23068 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23069 | |
23070 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23071 | if (attr == NULL) | |
23072 | return NULL; | |
23073 | ||
e3b94546 | 23074 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23075 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23076 | ||
23077 | switch (attr->form) | |
23078 | { | |
23079 | case DW_FORM_addr: | |
23080 | case DW_FORM_GNU_addr_index: | |
23081 | { | |
23082 | gdb_byte *tem; | |
23083 | ||
23084 | *len = cu->header.addr_size; | |
224c3ddb | 23085 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23086 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23087 | result = tem; | |
23088 | } | |
23089 | break; | |
23090 | case DW_FORM_string: | |
23091 | case DW_FORM_strp: | |
23092 | case DW_FORM_GNU_str_index: | |
23093 | case DW_FORM_GNU_strp_alt: | |
23094 | /* DW_STRING is already allocated on the objfile obstack, point | |
23095 | directly to it. */ | |
23096 | result = (const gdb_byte *) DW_STRING (attr); | |
23097 | *len = strlen (DW_STRING (attr)); | |
23098 | break; | |
23099 | case DW_FORM_block1: | |
23100 | case DW_FORM_block2: | |
23101 | case DW_FORM_block4: | |
23102 | case DW_FORM_block: | |
23103 | case DW_FORM_exprloc: | |
0224619f | 23104 | case DW_FORM_data16: |
b6807d98 TT |
23105 | result = DW_BLOCK (attr)->data; |
23106 | *len = DW_BLOCK (attr)->size; | |
23107 | break; | |
23108 | ||
23109 | /* The DW_AT_const_value attributes are supposed to carry the | |
23110 | symbol's value "represented as it would be on the target | |
23111 | architecture." By the time we get here, it's already been | |
23112 | converted to host endianness, so we just need to sign- or | |
23113 | zero-extend it as appropriate. */ | |
23114 | case DW_FORM_data1: | |
23115 | type = die_type (die, cu); | |
23116 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23117 | if (result == NULL) | |
23118 | result = write_constant_as_bytes (obstack, byte_order, | |
23119 | type, value, len); | |
23120 | break; | |
23121 | case DW_FORM_data2: | |
23122 | type = die_type (die, cu); | |
23123 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23124 | if (result == NULL) | |
23125 | result = write_constant_as_bytes (obstack, byte_order, | |
23126 | type, value, len); | |
23127 | break; | |
23128 | case DW_FORM_data4: | |
23129 | type = die_type (die, cu); | |
23130 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23131 | if (result == NULL) | |
23132 | result = write_constant_as_bytes (obstack, byte_order, | |
23133 | type, value, len); | |
23134 | break; | |
23135 | case DW_FORM_data8: | |
23136 | type = die_type (die, cu); | |
23137 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23138 | if (result == NULL) | |
23139 | result = write_constant_as_bytes (obstack, byte_order, | |
23140 | type, value, len); | |
23141 | break; | |
23142 | ||
23143 | case DW_FORM_sdata: | |
663c44ac | 23144 | case DW_FORM_implicit_const: |
b6807d98 TT |
23145 | type = die_type (die, cu); |
23146 | result = write_constant_as_bytes (obstack, byte_order, | |
23147 | type, DW_SND (attr), len); | |
23148 | break; | |
23149 | ||
23150 | case DW_FORM_udata: | |
23151 | type = die_type (die, cu); | |
23152 | result = write_constant_as_bytes (obstack, byte_order, | |
23153 | type, DW_UNSND (attr), len); | |
23154 | break; | |
23155 | ||
23156 | default: | |
23157 | complaint (&symfile_complaints, | |
23158 | _("unsupported const value attribute form: '%s'"), | |
23159 | dwarf_form_name (attr->form)); | |
23160 | break; | |
23161 | } | |
23162 | ||
23163 | return result; | |
23164 | } | |
23165 | ||
7942e96e AA |
23166 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23167 | valid type for this die is found. */ | |
23168 | ||
23169 | struct type * | |
9c541725 | 23170 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23171 | struct dwarf2_per_cu_data *per_cu) |
23172 | { | |
23173 | struct dwarf2_cu *cu; | |
23174 | struct die_info *die; | |
23175 | ||
7942e96e AA |
23176 | if (per_cu->cu == NULL) |
23177 | load_cu (per_cu); | |
23178 | cu = per_cu->cu; | |
23179 | if (!cu) | |
23180 | return NULL; | |
23181 | ||
9c541725 | 23182 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23183 | if (!die) |
23184 | return NULL; | |
23185 | ||
23186 | return die_type (die, cu); | |
23187 | } | |
23188 | ||
8a9b8146 TT |
23189 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23190 | PER_CU. */ | |
23191 | ||
23192 | struct type * | |
b64f50a1 | 23193 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23194 | struct dwarf2_per_cu_data *per_cu) |
23195 | { | |
9c541725 | 23196 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23197 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23198 | } |
23199 | ||
ac9ec31b | 23200 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23201 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23202 | On exit *REF_CU is the CU of the result. |
23203 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23204 | |
23205 | static struct die_info * | |
ac9ec31b DE |
23206 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23207 | struct dwarf2_cu **ref_cu) | |
348e048f | 23208 | { |
348e048f | 23209 | struct die_info temp_die; |
348e048f DE |
23210 | struct dwarf2_cu *sig_cu; |
23211 | struct die_info *die; | |
23212 | ||
ac9ec31b DE |
23213 | /* While it might be nice to assert sig_type->type == NULL here, |
23214 | we can get here for DW_AT_imported_declaration where we need | |
23215 | the DIE not the type. */ | |
348e048f DE |
23216 | |
23217 | /* If necessary, add it to the queue and load its DIEs. */ | |
23218 | ||
95554aad | 23219 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23220 | read_signatured_type (sig_type); |
348e048f | 23221 | |
348e048f | 23222 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23223 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23224 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23225 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23226 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23227 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23228 | if (die) |
23229 | { | |
ed2dc618 | 23230 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23231 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23232 | |
796a7ff8 DE |
23233 | /* For .gdb_index version 7 keep track of included TUs. |
23234 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23235 | if (dwarf2_per_objfile->index_table != NULL | |
23236 | && dwarf2_per_objfile->index_table->version <= 7) | |
23237 | { | |
23238 | VEC_safe_push (dwarf2_per_cu_ptr, | |
23239 | (*ref_cu)->per_cu->imported_symtabs, | |
23240 | sig_cu->per_cu); | |
23241 | } | |
23242 | ||
348e048f DE |
23243 | *ref_cu = sig_cu; |
23244 | return die; | |
23245 | } | |
23246 | ||
ac9ec31b DE |
23247 | return NULL; |
23248 | } | |
23249 | ||
23250 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23251 | On entry *REF_CU is the CU of SRC_DIE. | |
23252 | On exit *REF_CU is the CU of the result. | |
23253 | The result is the DIE of the type. | |
23254 | If the referenced type cannot be found an error is thrown. */ | |
23255 | ||
23256 | static struct die_info * | |
ff39bb5e | 23257 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23258 | struct dwarf2_cu **ref_cu) |
23259 | { | |
23260 | ULONGEST signature = DW_SIGNATURE (attr); | |
23261 | struct signatured_type *sig_type; | |
23262 | struct die_info *die; | |
23263 | ||
23264 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23265 | ||
a2ce51a0 | 23266 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23267 | /* sig_type will be NULL if the signatured type is missing from |
23268 | the debug info. */ | |
23269 | if (sig_type == NULL) | |
23270 | { | |
23271 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23272 | " from DIE at %s [in module %s]"), |
23273 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23274 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23275 | } |
23276 | ||
23277 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23278 | if (die == NULL) | |
23279 | { | |
23280 | dump_die_for_error (src_die); | |
23281 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23282 | " from DIE at %s [in module %s]"), |
23283 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23284 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23285 | } |
23286 | ||
23287 | return die; | |
23288 | } | |
23289 | ||
23290 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23291 | reading in and processing the type unit if necessary. */ | |
23292 | ||
23293 | static struct type * | |
23294 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23295 | struct dwarf2_cu *cu) | |
23296 | { | |
518817b3 SM |
23297 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23298 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23299 | struct signatured_type *sig_type; |
23300 | struct dwarf2_cu *type_cu; | |
23301 | struct die_info *type_die; | |
23302 | struct type *type; | |
23303 | ||
a2ce51a0 | 23304 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23305 | /* sig_type will be NULL if the signatured type is missing from |
23306 | the debug info. */ | |
23307 | if (sig_type == NULL) | |
23308 | { | |
23309 | complaint (&symfile_complaints, | |
23310 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23311 | " from DIE at %s [in module %s]"), |
23312 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23313 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23314 | return build_error_marker_type (cu, die); |
23315 | } | |
23316 | ||
23317 | /* If we already know the type we're done. */ | |
23318 | if (sig_type->type != NULL) | |
23319 | return sig_type->type; | |
23320 | ||
23321 | type_cu = cu; | |
23322 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23323 | if (type_die != NULL) | |
23324 | { | |
23325 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23326 | is created. This is important, for example, because for c++ classes | |
23327 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23328 | type = read_type_die (type_die, type_cu); | |
23329 | if (type == NULL) | |
23330 | { | |
23331 | complaint (&symfile_complaints, | |
23332 | _("Dwarf Error: Cannot build signatured type %s" | |
9d8780f0 SM |
23333 | " referenced from DIE at %s [in module %s]"), |
23334 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23335 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23336 | type = build_error_marker_type (cu, die); |
23337 | } | |
23338 | } | |
23339 | else | |
23340 | { | |
23341 | complaint (&symfile_complaints, | |
23342 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23343 | " from DIE at %s [in module %s]"), |
23344 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23345 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23346 | type = build_error_marker_type (cu, die); |
23347 | } | |
23348 | sig_type->type = type; | |
23349 | ||
23350 | return type; | |
23351 | } | |
23352 | ||
23353 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23354 | reading in and processing the type unit if necessary. */ | |
23355 | ||
23356 | static struct type * | |
ff39bb5e | 23357 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23358 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23359 | { |
23360 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23361 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23362 | { |
23363 | struct dwarf2_cu *type_cu = cu; | |
23364 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23365 | ||
23366 | return read_type_die (type_die, type_cu); | |
23367 | } | |
23368 | else if (attr->form == DW_FORM_ref_sig8) | |
23369 | { | |
23370 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23371 | } | |
23372 | else | |
23373 | { | |
518817b3 SM |
23374 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23375 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23376 | |
ac9ec31b DE |
23377 | complaint (&symfile_complaints, |
23378 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
9d8780f0 SM |
23379 | " at %s [in module %s]"), |
23380 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23381 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23382 | return build_error_marker_type (cu, die); |
23383 | } | |
348e048f DE |
23384 | } |
23385 | ||
e5fe5e75 | 23386 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23387 | |
23388 | static void | |
e5fe5e75 | 23389 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23390 | { |
52dc124a | 23391 | struct signatured_type *sig_type; |
348e048f | 23392 | |
f4dc4d17 DE |
23393 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23394 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23395 | ||
6721b2ec DE |
23396 | /* We have the per_cu, but we need the signatured_type. |
23397 | Fortunately this is an easy translation. */ | |
23398 | gdb_assert (per_cu->is_debug_types); | |
23399 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23400 | |
6721b2ec | 23401 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23402 | |
52dc124a | 23403 | read_signatured_type (sig_type); |
348e048f | 23404 | |
6721b2ec | 23405 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23406 | } |
23407 | ||
dee91e82 DE |
23408 | /* die_reader_func for read_signatured_type. |
23409 | This is identical to load_full_comp_unit_reader, | |
23410 | but is kept separate for now. */ | |
348e048f DE |
23411 | |
23412 | static void | |
dee91e82 | 23413 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 23414 | const gdb_byte *info_ptr, |
dee91e82 DE |
23415 | struct die_info *comp_unit_die, |
23416 | int has_children, | |
23417 | void *data) | |
348e048f | 23418 | { |
dee91e82 | 23419 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 23420 | |
dee91e82 DE |
23421 | gdb_assert (cu->die_hash == NULL); |
23422 | cu->die_hash = | |
23423 | htab_create_alloc_ex (cu->header.length / 12, | |
23424 | die_hash, | |
23425 | die_eq, | |
23426 | NULL, | |
23427 | &cu->comp_unit_obstack, | |
23428 | hashtab_obstack_allocate, | |
23429 | dummy_obstack_deallocate); | |
348e048f | 23430 | |
dee91e82 DE |
23431 | if (has_children) |
23432 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
23433 | &info_ptr, comp_unit_die); | |
23434 | cu->dies = comp_unit_die; | |
23435 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
23436 | |
23437 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 23438 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 23439 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
23440 | or we won't be able to build types correctly. |
23441 | Similarly, if we do not read the producer, we can not apply | |
23442 | producer-specific interpretation. */ | |
95554aad | 23443 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 23444 | } |
348e048f | 23445 | |
3019eac3 DE |
23446 | /* Read in a signatured type and build its CU and DIEs. |
23447 | If the type is a stub for the real type in a DWO file, | |
23448 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23449 | |
23450 | static void | |
23451 | read_signatured_type (struct signatured_type *sig_type) | |
23452 | { | |
23453 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23454 | |
3019eac3 | 23455 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23456 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23457 | |
f4dc4d17 DE |
23458 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
23459 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 23460 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23461 | } |
23462 | ||
c906108c SS |
23463 | /* Decode simple location descriptions. |
23464 | Given a pointer to a dwarf block that defines a location, compute | |
23465 | the location and return the value. | |
23466 | ||
4cecd739 DJ |
23467 | NOTE drow/2003-11-18: This function is called in two situations |
23468 | now: for the address of static or global variables (partial symbols | |
23469 | only) and for offsets into structures which are expected to be | |
23470 | (more or less) constant. The partial symbol case should go away, | |
23471 | and only the constant case should remain. That will let this | |
23472 | function complain more accurately. A few special modes are allowed | |
23473 | without complaint for global variables (for instance, global | |
23474 | register values and thread-local values). | |
c906108c SS |
23475 | |
23476 | A location description containing no operations indicates that the | |
4cecd739 | 23477 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23478 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23479 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23480 | complaint. |
23481 | ||
23482 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23483 | |
23484 | static CORE_ADDR | |
e7c27a73 | 23485 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23486 | { |
518817b3 | 23487 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23488 | size_t i; |
23489 | size_t size = blk->size; | |
d521ce57 | 23490 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23491 | CORE_ADDR stack[64]; |
23492 | int stacki; | |
23493 | unsigned int bytes_read, unsnd; | |
23494 | gdb_byte op; | |
c906108c | 23495 | |
21ae7a4d JK |
23496 | i = 0; |
23497 | stacki = 0; | |
23498 | stack[stacki] = 0; | |
23499 | stack[++stacki] = 0; | |
23500 | ||
23501 | while (i < size) | |
23502 | { | |
23503 | op = data[i++]; | |
23504 | switch (op) | |
23505 | { | |
23506 | case DW_OP_lit0: | |
23507 | case DW_OP_lit1: | |
23508 | case DW_OP_lit2: | |
23509 | case DW_OP_lit3: | |
23510 | case DW_OP_lit4: | |
23511 | case DW_OP_lit5: | |
23512 | case DW_OP_lit6: | |
23513 | case DW_OP_lit7: | |
23514 | case DW_OP_lit8: | |
23515 | case DW_OP_lit9: | |
23516 | case DW_OP_lit10: | |
23517 | case DW_OP_lit11: | |
23518 | case DW_OP_lit12: | |
23519 | case DW_OP_lit13: | |
23520 | case DW_OP_lit14: | |
23521 | case DW_OP_lit15: | |
23522 | case DW_OP_lit16: | |
23523 | case DW_OP_lit17: | |
23524 | case DW_OP_lit18: | |
23525 | case DW_OP_lit19: | |
23526 | case DW_OP_lit20: | |
23527 | case DW_OP_lit21: | |
23528 | case DW_OP_lit22: | |
23529 | case DW_OP_lit23: | |
23530 | case DW_OP_lit24: | |
23531 | case DW_OP_lit25: | |
23532 | case DW_OP_lit26: | |
23533 | case DW_OP_lit27: | |
23534 | case DW_OP_lit28: | |
23535 | case DW_OP_lit29: | |
23536 | case DW_OP_lit30: | |
23537 | case DW_OP_lit31: | |
23538 | stack[++stacki] = op - DW_OP_lit0; | |
23539 | break; | |
f1bea926 | 23540 | |
21ae7a4d JK |
23541 | case DW_OP_reg0: |
23542 | case DW_OP_reg1: | |
23543 | case DW_OP_reg2: | |
23544 | case DW_OP_reg3: | |
23545 | case DW_OP_reg4: | |
23546 | case DW_OP_reg5: | |
23547 | case DW_OP_reg6: | |
23548 | case DW_OP_reg7: | |
23549 | case DW_OP_reg8: | |
23550 | case DW_OP_reg9: | |
23551 | case DW_OP_reg10: | |
23552 | case DW_OP_reg11: | |
23553 | case DW_OP_reg12: | |
23554 | case DW_OP_reg13: | |
23555 | case DW_OP_reg14: | |
23556 | case DW_OP_reg15: | |
23557 | case DW_OP_reg16: | |
23558 | case DW_OP_reg17: | |
23559 | case DW_OP_reg18: | |
23560 | case DW_OP_reg19: | |
23561 | case DW_OP_reg20: | |
23562 | case DW_OP_reg21: | |
23563 | case DW_OP_reg22: | |
23564 | case DW_OP_reg23: | |
23565 | case DW_OP_reg24: | |
23566 | case DW_OP_reg25: | |
23567 | case DW_OP_reg26: | |
23568 | case DW_OP_reg27: | |
23569 | case DW_OP_reg28: | |
23570 | case DW_OP_reg29: | |
23571 | case DW_OP_reg30: | |
23572 | case DW_OP_reg31: | |
23573 | stack[++stacki] = op - DW_OP_reg0; | |
23574 | if (i < size) | |
23575 | dwarf2_complex_location_expr_complaint (); | |
23576 | break; | |
c906108c | 23577 | |
21ae7a4d JK |
23578 | case DW_OP_regx: |
23579 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23580 | i += bytes_read; | |
23581 | stack[++stacki] = unsnd; | |
23582 | if (i < size) | |
23583 | dwarf2_complex_location_expr_complaint (); | |
23584 | break; | |
c906108c | 23585 | |
21ae7a4d JK |
23586 | case DW_OP_addr: |
23587 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
23588 | cu, &bytes_read); | |
23589 | i += bytes_read; | |
23590 | break; | |
d53d4ac5 | 23591 | |
21ae7a4d JK |
23592 | case DW_OP_const1u: |
23593 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23594 | i += 1; | |
23595 | break; | |
23596 | ||
23597 | case DW_OP_const1s: | |
23598 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23599 | i += 1; | |
23600 | break; | |
23601 | ||
23602 | case DW_OP_const2u: | |
23603 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23604 | i += 2; | |
23605 | break; | |
23606 | ||
23607 | case DW_OP_const2s: | |
23608 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23609 | i += 2; | |
23610 | break; | |
d53d4ac5 | 23611 | |
21ae7a4d JK |
23612 | case DW_OP_const4u: |
23613 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23614 | i += 4; | |
23615 | break; | |
23616 | ||
23617 | case DW_OP_const4s: | |
23618 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23619 | i += 4; | |
23620 | break; | |
23621 | ||
585861ea JK |
23622 | case DW_OP_const8u: |
23623 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23624 | i += 8; | |
23625 | break; | |
23626 | ||
21ae7a4d JK |
23627 | case DW_OP_constu: |
23628 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23629 | &bytes_read); | |
23630 | i += bytes_read; | |
23631 | break; | |
23632 | ||
23633 | case DW_OP_consts: | |
23634 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23635 | i += bytes_read; | |
23636 | break; | |
23637 | ||
23638 | case DW_OP_dup: | |
23639 | stack[stacki + 1] = stack[stacki]; | |
23640 | stacki++; | |
23641 | break; | |
23642 | ||
23643 | case DW_OP_plus: | |
23644 | stack[stacki - 1] += stack[stacki]; | |
23645 | stacki--; | |
23646 | break; | |
23647 | ||
23648 | case DW_OP_plus_uconst: | |
23649 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23650 | &bytes_read); | |
23651 | i += bytes_read; | |
23652 | break; | |
23653 | ||
23654 | case DW_OP_minus: | |
23655 | stack[stacki - 1] -= stack[stacki]; | |
23656 | stacki--; | |
23657 | break; | |
23658 | ||
23659 | case DW_OP_deref: | |
23660 | /* If we're not the last op, then we definitely can't encode | |
23661 | this using GDB's address_class enum. This is valid for partial | |
23662 | global symbols, although the variable's address will be bogus | |
23663 | in the psymtab. */ | |
23664 | if (i < size) | |
23665 | dwarf2_complex_location_expr_complaint (); | |
23666 | break; | |
23667 | ||
23668 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23669 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23670 | /* The top of the stack has the offset from the beginning |
23671 | of the thread control block at which the variable is located. */ | |
23672 | /* Nothing should follow this operator, so the top of stack would | |
23673 | be returned. */ | |
23674 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23675 | address will be bogus in the psymtab. Make it always at least |
23676 | non-zero to not look as a variable garbage collected by linker | |
23677 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
23678 | if (i < size) |
23679 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 23680 | stack[stacki]++; |
21ae7a4d JK |
23681 | break; |
23682 | ||
23683 | case DW_OP_GNU_uninit: | |
23684 | break; | |
23685 | ||
3019eac3 | 23686 | case DW_OP_GNU_addr_index: |
49f6c839 | 23687 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23688 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23689 | &bytes_read); | |
23690 | i += bytes_read; | |
23691 | break; | |
23692 | ||
21ae7a4d JK |
23693 | default: |
23694 | { | |
f39c6ffd | 23695 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
23696 | |
23697 | if (name) | |
23698 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
23699 | name); | |
23700 | else | |
23701 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
23702 | op); | |
23703 | } | |
23704 | ||
23705 | return (stack[stacki]); | |
d53d4ac5 | 23706 | } |
3c6e0cb3 | 23707 | |
21ae7a4d JK |
23708 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23709 | outside of the allocated space. Also enforce minimum>0. */ | |
23710 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23711 | { | |
23712 | complaint (&symfile_complaints, | |
23713 | _("location description stack overflow")); | |
23714 | return 0; | |
23715 | } | |
23716 | ||
23717 | if (stacki <= 0) | |
23718 | { | |
23719 | complaint (&symfile_complaints, | |
23720 | _("location description stack underflow")); | |
23721 | return 0; | |
23722 | } | |
23723 | } | |
23724 | return (stack[stacki]); | |
c906108c SS |
23725 | } |
23726 | ||
23727 | /* memory allocation interface */ | |
23728 | ||
c906108c | 23729 | static struct dwarf_block * |
7b5a2f43 | 23730 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23731 | { |
8d749320 | 23732 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23733 | } |
23734 | ||
c906108c | 23735 | static struct die_info * |
b60c80d6 | 23736 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23737 | { |
23738 | struct die_info *die; | |
b60c80d6 DJ |
23739 | size_t size = sizeof (struct die_info); |
23740 | ||
23741 | if (num_attrs > 1) | |
23742 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23743 | |
b60c80d6 | 23744 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23745 | memset (die, 0, sizeof (struct die_info)); |
23746 | return (die); | |
23747 | } | |
2e276125 JB |
23748 | |
23749 | \f | |
23750 | /* Macro support. */ | |
23751 | ||
233d95b5 JK |
23752 | /* Return file name relative to the compilation directory of file number I in |
23753 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 23754 | responsible for freeing it. */ |
233d95b5 | 23755 | |
2e276125 | 23756 | static char * |
233d95b5 | 23757 | file_file_name (int file, struct line_header *lh) |
2e276125 | 23758 | { |
6a83a1e6 EZ |
23759 | /* Is the file number a valid index into the line header's file name |
23760 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23761 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 23762 | { |
8c43009f | 23763 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 23764 | |
8c43009f PA |
23765 | if (!IS_ABSOLUTE_PATH (fe.name)) |
23766 | { | |
23767 | const char *dir = fe.include_dir (lh); | |
23768 | if (dir != NULL) | |
23769 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
23770 | } | |
23771 | return xstrdup (fe.name); | |
6a83a1e6 | 23772 | } |
2e276125 JB |
23773 | else |
23774 | { | |
6a83a1e6 EZ |
23775 | /* The compiler produced a bogus file number. We can at least |
23776 | record the macro definitions made in the file, even if we | |
23777 | won't be able to find the file by name. */ | |
23778 | char fake_name[80]; | |
9a619af0 | 23779 | |
8c042590 PM |
23780 | xsnprintf (fake_name, sizeof (fake_name), |
23781 | "<bad macro file number %d>", file); | |
2e276125 | 23782 | |
6e70227d | 23783 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
23784 | _("bad file number in macro information (%d)"), |
23785 | file); | |
2e276125 | 23786 | |
6a83a1e6 | 23787 | return xstrdup (fake_name); |
2e276125 JB |
23788 | } |
23789 | } | |
23790 | ||
233d95b5 JK |
23791 | /* Return the full name of file number I in *LH's file name table. |
23792 | Use COMP_DIR as the name of the current directory of the | |
23793 | compilation. The result is allocated using xmalloc; the caller is | |
23794 | responsible for freeing it. */ | |
23795 | static char * | |
23796 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
23797 | { | |
23798 | /* Is the file number a valid index into the line header's file name | |
23799 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23800 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
23801 | { |
23802 | char *relative = file_file_name (file, lh); | |
23803 | ||
23804 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
23805 | return relative; | |
b36cec19 PA |
23806 | return reconcat (relative, comp_dir, SLASH_STRING, |
23807 | relative, (char *) NULL); | |
233d95b5 JK |
23808 | } |
23809 | else | |
23810 | return file_file_name (file, lh); | |
23811 | } | |
23812 | ||
2e276125 JB |
23813 | |
23814 | static struct macro_source_file * | |
23815 | macro_start_file (int file, int line, | |
23816 | struct macro_source_file *current_file, | |
43f3e411 | 23817 | struct line_header *lh) |
2e276125 | 23818 | { |
233d95b5 JK |
23819 | /* File name relative to the compilation directory of this source file. */ |
23820 | char *file_name = file_file_name (file, lh); | |
2e276125 | 23821 | |
2e276125 | 23822 | if (! current_file) |
abc9d0dc | 23823 | { |
fc474241 DE |
23824 | /* Note: We don't create a macro table for this compilation unit |
23825 | at all until we actually get a filename. */ | |
43f3e411 | 23826 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 23827 | |
abc9d0dc TT |
23828 | /* If we have no current file, then this must be the start_file |
23829 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
23830 | current_file = macro_set_main (macro_table, file_name); |
23831 | macro_define_special (macro_table); | |
abc9d0dc | 23832 | } |
2e276125 | 23833 | else |
233d95b5 | 23834 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 23835 | |
233d95b5 | 23836 | xfree (file_name); |
6e70227d | 23837 | |
2e276125 JB |
23838 | return current_file; |
23839 | } | |
23840 | ||
2e276125 JB |
23841 | static const char * |
23842 | consume_improper_spaces (const char *p, const char *body) | |
23843 | { | |
23844 | if (*p == ' ') | |
23845 | { | |
4d3c2250 | 23846 | complaint (&symfile_complaints, |
3e43a32a MS |
23847 | _("macro definition contains spaces " |
23848 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 23849 | body); |
2e276125 JB |
23850 | |
23851 | while (*p == ' ') | |
23852 | p++; | |
23853 | } | |
23854 | ||
23855 | return p; | |
23856 | } | |
23857 | ||
23858 | ||
23859 | static void | |
23860 | parse_macro_definition (struct macro_source_file *file, int line, | |
23861 | const char *body) | |
23862 | { | |
23863 | const char *p; | |
23864 | ||
23865 | /* The body string takes one of two forms. For object-like macro | |
23866 | definitions, it should be: | |
23867 | ||
23868 | <macro name> " " <definition> | |
23869 | ||
23870 | For function-like macro definitions, it should be: | |
23871 | ||
23872 | <macro name> "() " <definition> | |
23873 | or | |
23874 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
23875 | ||
23876 | Spaces may appear only where explicitly indicated, and in the | |
23877 | <definition>. | |
23878 | ||
23879 | The Dwarf 2 spec says that an object-like macro's name is always | |
23880 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 23881 | the space when the macro's definition is the empty string. |
2e276125 JB |
23882 | |
23883 | The Dwarf 2 spec says that there should be no spaces between the | |
23884 | formal arguments in a function-like macro's formal argument list, | |
23885 | but versions of GCC around March 2002 include spaces after the | |
23886 | commas. */ | |
23887 | ||
23888 | ||
23889 | /* Find the extent of the macro name. The macro name is terminated | |
23890 | by either a space or null character (for an object-like macro) or | |
23891 | an opening paren (for a function-like macro). */ | |
23892 | for (p = body; *p; p++) | |
23893 | if (*p == ' ' || *p == '(') | |
23894 | break; | |
23895 | ||
23896 | if (*p == ' ' || *p == '\0') | |
23897 | { | |
23898 | /* It's an object-like macro. */ | |
23899 | int name_len = p - body; | |
3f8a7804 | 23900 | char *name = savestring (body, name_len); |
2e276125 JB |
23901 | const char *replacement; |
23902 | ||
23903 | if (*p == ' ') | |
23904 | replacement = body + name_len + 1; | |
23905 | else | |
23906 | { | |
4d3c2250 | 23907 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23908 | replacement = body + name_len; |
23909 | } | |
6e70227d | 23910 | |
2e276125 JB |
23911 | macro_define_object (file, line, name, replacement); |
23912 | ||
23913 | xfree (name); | |
23914 | } | |
23915 | else if (*p == '(') | |
23916 | { | |
23917 | /* It's a function-like macro. */ | |
3f8a7804 | 23918 | char *name = savestring (body, p - body); |
2e276125 JB |
23919 | int argc = 0; |
23920 | int argv_size = 1; | |
8d749320 | 23921 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
23922 | |
23923 | p++; | |
23924 | ||
23925 | p = consume_improper_spaces (p, body); | |
23926 | ||
23927 | /* Parse the formal argument list. */ | |
23928 | while (*p && *p != ')') | |
23929 | { | |
23930 | /* Find the extent of the current argument name. */ | |
23931 | const char *arg_start = p; | |
23932 | ||
23933 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
23934 | p++; | |
23935 | ||
23936 | if (! *p || p == arg_start) | |
4d3c2250 | 23937 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23938 | else |
23939 | { | |
23940 | /* Make sure argv has room for the new argument. */ | |
23941 | if (argc >= argv_size) | |
23942 | { | |
23943 | argv_size *= 2; | |
224c3ddb | 23944 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
23945 | } |
23946 | ||
3f8a7804 | 23947 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
23948 | } |
23949 | ||
23950 | p = consume_improper_spaces (p, body); | |
23951 | ||
23952 | /* Consume the comma, if present. */ | |
23953 | if (*p == ',') | |
23954 | { | |
23955 | p++; | |
23956 | ||
23957 | p = consume_improper_spaces (p, body); | |
23958 | } | |
23959 | } | |
23960 | ||
23961 | if (*p == ')') | |
23962 | { | |
23963 | p++; | |
23964 | ||
23965 | if (*p == ' ') | |
23966 | /* Perfectly formed definition, no complaints. */ | |
23967 | macro_define_function (file, line, name, | |
6e70227d | 23968 | argc, (const char **) argv, |
2e276125 JB |
23969 | p + 1); |
23970 | else if (*p == '\0') | |
23971 | { | |
23972 | /* Complain, but do define it. */ | |
4d3c2250 | 23973 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 23974 | macro_define_function (file, line, name, |
6e70227d | 23975 | argc, (const char **) argv, |
2e276125 JB |
23976 | p); |
23977 | } | |
23978 | else | |
23979 | /* Just complain. */ | |
4d3c2250 | 23980 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23981 | } |
23982 | else | |
23983 | /* Just complain. */ | |
4d3c2250 | 23984 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23985 | |
23986 | xfree (name); | |
23987 | { | |
23988 | int i; | |
23989 | ||
23990 | for (i = 0; i < argc; i++) | |
23991 | xfree (argv[i]); | |
23992 | } | |
23993 | xfree (argv); | |
23994 | } | |
23995 | else | |
4d3c2250 | 23996 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23997 | } |
23998 | ||
cf2c3c16 TT |
23999 | /* Skip some bytes from BYTES according to the form given in FORM. |
24000 | Returns the new pointer. */ | |
2e276125 | 24001 | |
d521ce57 TT |
24002 | static const gdb_byte * |
24003 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24004 | enum dwarf_form form, |
24005 | unsigned int offset_size, | |
24006 | struct dwarf2_section_info *section) | |
2e276125 | 24007 | { |
cf2c3c16 | 24008 | unsigned int bytes_read; |
2e276125 | 24009 | |
cf2c3c16 | 24010 | switch (form) |
2e276125 | 24011 | { |
cf2c3c16 TT |
24012 | case DW_FORM_data1: |
24013 | case DW_FORM_flag: | |
24014 | ++bytes; | |
24015 | break; | |
24016 | ||
24017 | case DW_FORM_data2: | |
24018 | bytes += 2; | |
24019 | break; | |
24020 | ||
24021 | case DW_FORM_data4: | |
24022 | bytes += 4; | |
24023 | break; | |
24024 | ||
24025 | case DW_FORM_data8: | |
24026 | bytes += 8; | |
24027 | break; | |
24028 | ||
0224619f JK |
24029 | case DW_FORM_data16: |
24030 | bytes += 16; | |
24031 | break; | |
24032 | ||
cf2c3c16 TT |
24033 | case DW_FORM_string: |
24034 | read_direct_string (abfd, bytes, &bytes_read); | |
24035 | bytes += bytes_read; | |
24036 | break; | |
24037 | ||
24038 | case DW_FORM_sec_offset: | |
24039 | case DW_FORM_strp: | |
36586728 | 24040 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24041 | bytes += offset_size; |
24042 | break; | |
24043 | ||
24044 | case DW_FORM_block: | |
24045 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24046 | bytes += bytes_read; | |
24047 | break; | |
24048 | ||
24049 | case DW_FORM_block1: | |
24050 | bytes += 1 + read_1_byte (abfd, bytes); | |
24051 | break; | |
24052 | case DW_FORM_block2: | |
24053 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24054 | break; | |
24055 | case DW_FORM_block4: | |
24056 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24057 | break; | |
24058 | ||
24059 | case DW_FORM_sdata: | |
24060 | case DW_FORM_udata: | |
3019eac3 DE |
24061 | case DW_FORM_GNU_addr_index: |
24062 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24063 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24064 | if (bytes == NULL) |
24065 | { | |
24066 | dwarf2_section_buffer_overflow_complaint (section); | |
24067 | return NULL; | |
24068 | } | |
cf2c3c16 TT |
24069 | break; |
24070 | ||
663c44ac JK |
24071 | case DW_FORM_implicit_const: |
24072 | break; | |
24073 | ||
cf2c3c16 TT |
24074 | default: |
24075 | { | |
cf2c3c16 TT |
24076 | complaint (&symfile_complaints, |
24077 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 24078 | form, get_section_name (section)); |
cf2c3c16 TT |
24079 | return NULL; |
24080 | } | |
2e276125 JB |
24081 | } |
24082 | ||
cf2c3c16 TT |
24083 | return bytes; |
24084 | } | |
757a13d0 | 24085 | |
cf2c3c16 TT |
24086 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24087 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24088 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24089 | |
d521ce57 | 24090 | static const gdb_byte * |
cf2c3c16 | 24091 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24092 | const gdb_byte **opcode_definitions, |
24093 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24094 | bfd *abfd, |
24095 | unsigned int offset_size, | |
24096 | struct dwarf2_section_info *section) | |
24097 | { | |
24098 | unsigned int bytes_read, i; | |
24099 | unsigned long arg; | |
d521ce57 | 24100 | const gdb_byte *defn; |
2e276125 | 24101 | |
cf2c3c16 | 24102 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24103 | { |
cf2c3c16 TT |
24104 | complaint (&symfile_complaints, |
24105 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
24106 | opcode); | |
24107 | return NULL; | |
24108 | } | |
2e276125 | 24109 | |
cf2c3c16 TT |
24110 | defn = opcode_definitions[opcode]; |
24111 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24112 | defn += bytes_read; | |
2e276125 | 24113 | |
cf2c3c16 TT |
24114 | for (i = 0; i < arg; ++i) |
24115 | { | |
aead7601 SM |
24116 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24117 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24118 | section); |
cf2c3c16 TT |
24119 | if (mac_ptr == NULL) |
24120 | { | |
24121 | /* skip_form_bytes already issued the complaint. */ | |
24122 | return NULL; | |
24123 | } | |
24124 | } | |
757a13d0 | 24125 | |
cf2c3c16 TT |
24126 | return mac_ptr; |
24127 | } | |
757a13d0 | 24128 | |
cf2c3c16 TT |
24129 | /* A helper function which parses the header of a macro section. |
24130 | If the macro section is the extended (for now called "GNU") type, | |
24131 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24132 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24133 | |
d521ce57 TT |
24134 | static const gdb_byte * |
24135 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24136 | bfd *abfd, |
d521ce57 | 24137 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24138 | unsigned int *offset_size, |
24139 | int section_is_gnu) | |
24140 | { | |
24141 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24142 | |
cf2c3c16 TT |
24143 | if (section_is_gnu) |
24144 | { | |
24145 | unsigned int version, flags; | |
757a13d0 | 24146 | |
cf2c3c16 | 24147 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24148 | if (version != 4 && version != 5) |
cf2c3c16 TT |
24149 | { |
24150 | complaint (&symfile_complaints, | |
24151 | _("unrecognized version `%d' in .debug_macro section"), | |
24152 | version); | |
24153 | return NULL; | |
24154 | } | |
24155 | mac_ptr += 2; | |
757a13d0 | 24156 | |
cf2c3c16 TT |
24157 | flags = read_1_byte (abfd, mac_ptr); |
24158 | ++mac_ptr; | |
24159 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24160 | |
cf2c3c16 TT |
24161 | if ((flags & 2) != 0) |
24162 | /* We don't need the line table offset. */ | |
24163 | mac_ptr += *offset_size; | |
757a13d0 | 24164 | |
cf2c3c16 TT |
24165 | /* Vendor opcode descriptions. */ |
24166 | if ((flags & 4) != 0) | |
24167 | { | |
24168 | unsigned int i, count; | |
757a13d0 | 24169 | |
cf2c3c16 TT |
24170 | count = read_1_byte (abfd, mac_ptr); |
24171 | ++mac_ptr; | |
24172 | for (i = 0; i < count; ++i) | |
24173 | { | |
24174 | unsigned int opcode, bytes_read; | |
24175 | unsigned long arg; | |
24176 | ||
24177 | opcode = read_1_byte (abfd, mac_ptr); | |
24178 | ++mac_ptr; | |
24179 | opcode_definitions[opcode] = mac_ptr; | |
24180 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24181 | mac_ptr += bytes_read; | |
24182 | mac_ptr += arg; | |
24183 | } | |
757a13d0 | 24184 | } |
cf2c3c16 | 24185 | } |
757a13d0 | 24186 | |
cf2c3c16 TT |
24187 | return mac_ptr; |
24188 | } | |
757a13d0 | 24189 | |
cf2c3c16 | 24190 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24191 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24192 | |
24193 | static void | |
ed2dc618 SM |
24194 | dwarf_decode_macro_bytes (struct dwarf2_per_objfile *dwarf2_per_objfile, |
24195 | bfd *abfd, | |
d521ce57 | 24196 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24197 | struct macro_source_file *current_file, |
43f3e411 | 24198 | struct line_header *lh, |
cf2c3c16 | 24199 | struct dwarf2_section_info *section, |
36586728 | 24200 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24201 | unsigned int offset_size, |
8fc3fc34 | 24202 | htab_t include_hash) |
cf2c3c16 | 24203 | { |
4d663531 | 24204 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24205 | enum dwarf_macro_record_type macinfo_type; |
24206 | int at_commandline; | |
d521ce57 | 24207 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24208 | |
cf2c3c16 TT |
24209 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24210 | &offset_size, section_is_gnu); | |
24211 | if (mac_ptr == NULL) | |
24212 | { | |
24213 | /* We already issued a complaint. */ | |
24214 | return; | |
24215 | } | |
757a13d0 JK |
24216 | |
24217 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24218 | GDB is still reading the definitions from command line. First | |
24219 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24220 | to create CURRENT_FILE for the main source holding also the command line | |
24221 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24222 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24223 | ||
24224 | at_commandline = 1; | |
24225 | ||
24226 | do | |
24227 | { | |
24228 | /* Do we at least have room for a macinfo type byte? */ | |
24229 | if (mac_ptr >= mac_end) | |
24230 | { | |
f664829e | 24231 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24232 | break; |
24233 | } | |
24234 | ||
aead7601 | 24235 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24236 | mac_ptr++; |
24237 | ||
cf2c3c16 TT |
24238 | /* Note that we rely on the fact that the corresponding GNU and |
24239 | DWARF constants are the same. */ | |
132448f8 SM |
24240 | DIAGNOSTIC_PUSH |
24241 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24242 | switch (macinfo_type) |
24243 | { | |
24244 | /* A zero macinfo type indicates the end of the macro | |
24245 | information. */ | |
24246 | case 0: | |
24247 | break; | |
2e276125 | 24248 | |
0af92d60 JK |
24249 | case DW_MACRO_define: |
24250 | case DW_MACRO_undef: | |
24251 | case DW_MACRO_define_strp: | |
24252 | case DW_MACRO_undef_strp: | |
24253 | case DW_MACRO_define_sup: | |
24254 | case DW_MACRO_undef_sup: | |
2e276125 | 24255 | { |
891d2f0b | 24256 | unsigned int bytes_read; |
2e276125 | 24257 | int line; |
d521ce57 | 24258 | const char *body; |
cf2c3c16 | 24259 | int is_define; |
2e276125 | 24260 | |
cf2c3c16 TT |
24261 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24262 | mac_ptr += bytes_read; | |
24263 | ||
0af92d60 JK |
24264 | if (macinfo_type == DW_MACRO_define |
24265 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24266 | { |
24267 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24268 | mac_ptr += bytes_read; | |
24269 | } | |
24270 | else | |
24271 | { | |
24272 | LONGEST str_offset; | |
24273 | ||
24274 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24275 | mac_ptr += offset_size; | |
2e276125 | 24276 | |
0af92d60 JK |
24277 | if (macinfo_type == DW_MACRO_define_sup |
24278 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24279 | || section_is_dwz) |
36586728 | 24280 | { |
ed2dc618 SM |
24281 | struct dwz_file *dwz |
24282 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24283 | |
ed2dc618 SM |
24284 | body = read_indirect_string_from_dwz (objfile, |
24285 | dwz, str_offset); | |
36586728 TT |
24286 | } |
24287 | else | |
ed2dc618 SM |
24288 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24289 | abfd, str_offset); | |
cf2c3c16 TT |
24290 | } |
24291 | ||
0af92d60 JK |
24292 | is_define = (macinfo_type == DW_MACRO_define |
24293 | || macinfo_type == DW_MACRO_define_strp | |
24294 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24295 | if (! current_file) |
757a13d0 JK |
24296 | { |
24297 | /* DWARF violation as no main source is present. */ | |
24298 | complaint (&symfile_complaints, | |
24299 | _("debug info with no main source gives macro %s " | |
24300 | "on line %d: %s"), | |
cf2c3c16 TT |
24301 | is_define ? _("definition") : _("undefinition"), |
24302 | line, body); | |
757a13d0 JK |
24303 | break; |
24304 | } | |
3e43a32a MS |
24305 | if ((line == 0 && !at_commandline) |
24306 | || (line != 0 && at_commandline)) | |
4d3c2250 | 24307 | complaint (&symfile_complaints, |
757a13d0 JK |
24308 | _("debug info gives %s macro %s with %s line %d: %s"), |
24309 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 24310 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24311 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24312 | ||
cf2c3c16 | 24313 | if (is_define) |
757a13d0 | 24314 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
24315 | else |
24316 | { | |
0af92d60 JK |
24317 | gdb_assert (macinfo_type == DW_MACRO_undef |
24318 | || macinfo_type == DW_MACRO_undef_strp | |
24319 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24320 | macro_undef (current_file, line, body); |
24321 | } | |
2e276125 JB |
24322 | } |
24323 | break; | |
24324 | ||
0af92d60 | 24325 | case DW_MACRO_start_file: |
2e276125 | 24326 | { |
891d2f0b | 24327 | unsigned int bytes_read; |
2e276125 JB |
24328 | int line, file; |
24329 | ||
24330 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24331 | mac_ptr += bytes_read; | |
24332 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24333 | mac_ptr += bytes_read; | |
24334 | ||
3e43a32a MS |
24335 | if ((line == 0 && !at_commandline) |
24336 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
24337 | complaint (&symfile_complaints, |
24338 | _("debug info gives source %d included " | |
24339 | "from %s at %s line %d"), | |
24340 | file, at_commandline ? _("command-line") : _("file"), | |
24341 | line == 0 ? _("zero") : _("non-zero"), line); | |
24342 | ||
24343 | if (at_commandline) | |
24344 | { | |
0af92d60 | 24345 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24346 | pass one. */ |
757a13d0 JK |
24347 | at_commandline = 0; |
24348 | } | |
24349 | else | |
43f3e411 | 24350 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
24351 | } |
24352 | break; | |
24353 | ||
0af92d60 | 24354 | case DW_MACRO_end_file: |
2e276125 | 24355 | if (! current_file) |
4d3c2250 | 24356 | complaint (&symfile_complaints, |
3e43a32a MS |
24357 | _("macro debug info has an unmatched " |
24358 | "`close_file' directive")); | |
2e276125 JB |
24359 | else |
24360 | { | |
24361 | current_file = current_file->included_by; | |
24362 | if (! current_file) | |
24363 | { | |
cf2c3c16 | 24364 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24365 | |
24366 | /* GCC circa March 2002 doesn't produce the zero | |
24367 | type byte marking the end of the compilation | |
24368 | unit. Complain if it's not there, but exit no | |
24369 | matter what. */ | |
24370 | ||
24371 | /* Do we at least have room for a macinfo type byte? */ | |
24372 | if (mac_ptr >= mac_end) | |
24373 | { | |
f664829e | 24374 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24375 | return; |
24376 | } | |
24377 | ||
24378 | /* We don't increment mac_ptr here, so this is just | |
24379 | a look-ahead. */ | |
aead7601 SM |
24380 | next_type |
24381 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24382 | mac_ptr); | |
2e276125 | 24383 | if (next_type != 0) |
4d3c2250 | 24384 | complaint (&symfile_complaints, |
3e43a32a MS |
24385 | _("no terminating 0-type entry for " |
24386 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
24387 | |
24388 | return; | |
24389 | } | |
24390 | } | |
24391 | break; | |
24392 | ||
0af92d60 JK |
24393 | case DW_MACRO_import: |
24394 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24395 | { |
24396 | LONGEST offset; | |
8fc3fc34 | 24397 | void **slot; |
a036ba48 TT |
24398 | bfd *include_bfd = abfd; |
24399 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24400 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24401 | int is_dwz = section_is_dwz; |
d521ce57 | 24402 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24403 | |
24404 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24405 | mac_ptr += offset_size; | |
24406 | ||
0af92d60 | 24407 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24408 | { |
ed2dc618 | 24409 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24410 | |
4d663531 | 24411 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24412 | |
a036ba48 | 24413 | include_section = &dwz->macro; |
a32a8923 | 24414 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24415 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24416 | is_dwz = 1; | |
24417 | } | |
24418 | ||
24419 | new_mac_ptr = include_section->buffer + offset; | |
24420 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24421 | ||
8fc3fc34 TT |
24422 | if (*slot != NULL) |
24423 | { | |
24424 | /* This has actually happened; see | |
24425 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
24426 | complaint (&symfile_complaints, | |
0af92d60 | 24427 | _("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24428 | ".debug_macro section")); |
24429 | } | |
24430 | else | |
24431 | { | |
d521ce57 | 24432 | *slot = (void *) new_mac_ptr; |
36586728 | 24433 | |
ed2dc618 SM |
24434 | dwarf_decode_macro_bytes (dwarf2_per_objfile, |
24435 | include_bfd, new_mac_ptr, | |
43f3e411 | 24436 | include_mac_end, current_file, lh, |
36586728 | 24437 | section, section_is_gnu, is_dwz, |
4d663531 | 24438 | offset_size, include_hash); |
8fc3fc34 | 24439 | |
d521ce57 | 24440 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24441 | } |
cf2c3c16 TT |
24442 | } |
24443 | break; | |
24444 | ||
2e276125 | 24445 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24446 | if (!section_is_gnu) |
24447 | { | |
24448 | unsigned int bytes_read; | |
2e276125 | 24449 | |
ac298888 TT |
24450 | /* This reads the constant, but since we don't recognize |
24451 | any vendor extensions, we ignore it. */ | |
24452 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24453 | mac_ptr += bytes_read; |
24454 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24455 | mac_ptr += bytes_read; | |
2e276125 | 24456 | |
cf2c3c16 TT |
24457 | /* We don't recognize any vendor extensions. */ |
24458 | break; | |
24459 | } | |
24460 | /* FALLTHROUGH */ | |
24461 | ||
24462 | default: | |
24463 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24464 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24465 | section); |
24466 | if (mac_ptr == NULL) | |
24467 | return; | |
24468 | break; | |
2e276125 | 24469 | } |
132448f8 | 24470 | DIAGNOSTIC_POP |
757a13d0 | 24471 | } while (macinfo_type != 0); |
2e276125 | 24472 | } |
8e19ed76 | 24473 | |
cf2c3c16 | 24474 | static void |
09262596 | 24475 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24476 | int section_is_gnu) |
cf2c3c16 | 24477 | { |
518817b3 SM |
24478 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24479 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24480 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24481 | struct line_header *lh = cu->line_header; |
24482 | bfd *abfd; | |
d521ce57 | 24483 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24484 | struct macro_source_file *current_file = 0; |
24485 | enum dwarf_macro_record_type macinfo_type; | |
24486 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24487 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24488 | void **slot; |
09262596 DE |
24489 | struct dwarf2_section_info *section; |
24490 | const char *section_name; | |
24491 | ||
24492 | if (cu->dwo_unit != NULL) | |
24493 | { | |
24494 | if (section_is_gnu) | |
24495 | { | |
24496 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24497 | section_name = ".debug_macro.dwo"; | |
24498 | } | |
24499 | else | |
24500 | { | |
24501 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24502 | section_name = ".debug_macinfo.dwo"; | |
24503 | } | |
24504 | } | |
24505 | else | |
24506 | { | |
24507 | if (section_is_gnu) | |
24508 | { | |
24509 | section = &dwarf2_per_objfile->macro; | |
24510 | section_name = ".debug_macro"; | |
24511 | } | |
24512 | else | |
24513 | { | |
24514 | section = &dwarf2_per_objfile->macinfo; | |
24515 | section_name = ".debug_macinfo"; | |
24516 | } | |
24517 | } | |
cf2c3c16 | 24518 | |
bb5ed363 | 24519 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
24520 | if (section->buffer == NULL) |
24521 | { | |
fceca515 | 24522 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
24523 | return; |
24524 | } | |
a32a8923 | 24525 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
24526 | |
24527 | /* First pass: Find the name of the base filename. | |
24528 | This filename is needed in order to process all macros whose definition | |
24529 | (or undefinition) comes from the command line. These macros are defined | |
24530 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24531 | associated to the base file. | |
24532 | ||
24533 | To determine the base file name, we scan the macro definitions until we | |
24534 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24535 | CURRENT_FILE accordingly so that any macro definition found before the | |
24536 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24537 | ||
24538 | mac_ptr = section->buffer + offset; | |
24539 | mac_end = section->buffer + section->size; | |
24540 | ||
24541 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24542 | &offset_size, section_is_gnu); | |
24543 | if (mac_ptr == NULL) | |
24544 | { | |
24545 | /* We already issued a complaint. */ | |
24546 | return; | |
24547 | } | |
24548 | ||
24549 | do | |
24550 | { | |
24551 | /* Do we at least have room for a macinfo type byte? */ | |
24552 | if (mac_ptr >= mac_end) | |
24553 | { | |
24554 | /* Complaint is printed during the second pass as GDB will probably | |
24555 | stop the first pass earlier upon finding | |
24556 | DW_MACINFO_start_file. */ | |
24557 | break; | |
24558 | } | |
24559 | ||
aead7601 | 24560 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
24561 | mac_ptr++; |
24562 | ||
24563 | /* Note that we rely on the fact that the corresponding GNU and | |
24564 | DWARF constants are the same. */ | |
132448f8 SM |
24565 | DIAGNOSTIC_PUSH |
24566 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
24567 | switch (macinfo_type) |
24568 | { | |
24569 | /* A zero macinfo type indicates the end of the macro | |
24570 | information. */ | |
24571 | case 0: | |
24572 | break; | |
24573 | ||
0af92d60 JK |
24574 | case DW_MACRO_define: |
24575 | case DW_MACRO_undef: | |
cf2c3c16 TT |
24576 | /* Only skip the data by MAC_PTR. */ |
24577 | { | |
24578 | unsigned int bytes_read; | |
24579 | ||
24580 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24581 | mac_ptr += bytes_read; | |
24582 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24583 | mac_ptr += bytes_read; | |
24584 | } | |
24585 | break; | |
24586 | ||
0af92d60 | 24587 | case DW_MACRO_start_file: |
cf2c3c16 TT |
24588 | { |
24589 | unsigned int bytes_read; | |
24590 | int line, file; | |
24591 | ||
24592 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24593 | mac_ptr += bytes_read; | |
24594 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24595 | mac_ptr += bytes_read; | |
24596 | ||
43f3e411 | 24597 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
24598 | } |
24599 | break; | |
24600 | ||
0af92d60 | 24601 | case DW_MACRO_end_file: |
cf2c3c16 TT |
24602 | /* No data to skip by MAC_PTR. */ |
24603 | break; | |
24604 | ||
0af92d60 JK |
24605 | case DW_MACRO_define_strp: |
24606 | case DW_MACRO_undef_strp: | |
24607 | case DW_MACRO_define_sup: | |
24608 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
24609 | { |
24610 | unsigned int bytes_read; | |
24611 | ||
24612 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24613 | mac_ptr += bytes_read; | |
24614 | mac_ptr += offset_size; | |
24615 | } | |
24616 | break; | |
24617 | ||
0af92d60 JK |
24618 | case DW_MACRO_import: |
24619 | case DW_MACRO_import_sup: | |
cf2c3c16 | 24620 | /* Note that, according to the spec, a transparent include |
0af92d60 | 24621 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
24622 | skip this opcode. */ |
24623 | mac_ptr += offset_size; | |
24624 | break; | |
24625 | ||
24626 | case DW_MACINFO_vendor_ext: | |
24627 | /* Only skip the data by MAC_PTR. */ | |
24628 | if (!section_is_gnu) | |
24629 | { | |
24630 | unsigned int bytes_read; | |
24631 | ||
24632 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24633 | mac_ptr += bytes_read; | |
24634 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24635 | mac_ptr += bytes_read; | |
24636 | } | |
24637 | /* FALLTHROUGH */ | |
24638 | ||
24639 | default: | |
24640 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24641 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24642 | section); |
24643 | if (mac_ptr == NULL) | |
24644 | return; | |
24645 | break; | |
24646 | } | |
132448f8 | 24647 | DIAGNOSTIC_POP |
cf2c3c16 TT |
24648 | } while (macinfo_type != 0 && current_file == NULL); |
24649 | ||
24650 | /* Second pass: Process all entries. | |
24651 | ||
24652 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
24653 | command-line macro definitions/undefinitions. This flag is unset when we | |
24654 | reach the first DW_MACINFO_start_file entry. */ | |
24655 | ||
fc4007c9 TT |
24656 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
24657 | htab_eq_pointer, | |
24658 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 24659 | mac_ptr = section->buffer + offset; |
fc4007c9 | 24660 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 24661 | *slot = (void *) mac_ptr; |
ed2dc618 SM |
24662 | dwarf_decode_macro_bytes (dwarf2_per_objfile, |
24663 | abfd, mac_ptr, mac_end, | |
43f3e411 | 24664 | current_file, lh, section, |
fc4007c9 TT |
24665 | section_is_gnu, 0, offset_size, |
24666 | include_hash.get ()); | |
cf2c3c16 TT |
24667 | } |
24668 | ||
8e19ed76 | 24669 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 24670 | if so return true else false. */ |
380bca97 | 24671 | |
8e19ed76 | 24672 | static int |
6e5a29e1 | 24673 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
24674 | { |
24675 | return (attr == NULL ? 0 : | |
24676 | attr->form == DW_FORM_block1 | |
24677 | || attr->form == DW_FORM_block2 | |
24678 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
24679 | || attr->form == DW_FORM_block |
24680 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 24681 | } |
4c2df51b | 24682 | |
c6a0999f JB |
24683 | /* Return non-zero if ATTR's value is a section offset --- classes |
24684 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
24685 | You may use DW_UNSND (attr) to retrieve such offsets. | |
24686 | ||
24687 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
24688 | may have a value that belongs to more than one of these classes; it | |
24689 | would be ambiguous if we did, because we use the same forms for all | |
24690 | of them. */ | |
380bca97 | 24691 | |
3690dd37 | 24692 | static int |
6e5a29e1 | 24693 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
24694 | { |
24695 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
24696 | || attr->form == DW_FORM_data8 |
24697 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
24698 | } |
24699 | ||
3690dd37 JB |
24700 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
24701 | zero otherwise. When this function returns true, you can apply | |
24702 | dwarf2_get_attr_constant_value to it. | |
24703 | ||
24704 | However, note that for some attributes you must check | |
24705 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
24706 | and DW_FORM_data8 are members of both the constant class, and of | |
24707 | the classes that contain offsets into other debug sections | |
24708 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
24709 | that, if an attribute's can be either a constant or one of the | |
24710 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
24711 | taken as section offsets, not constants. |
24712 | ||
24713 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
24714 | cannot handle that. */ | |
380bca97 | 24715 | |
3690dd37 | 24716 | static int |
6e5a29e1 | 24717 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
24718 | { |
24719 | switch (attr->form) | |
24720 | { | |
24721 | case DW_FORM_sdata: | |
24722 | case DW_FORM_udata: | |
24723 | case DW_FORM_data1: | |
24724 | case DW_FORM_data2: | |
24725 | case DW_FORM_data4: | |
24726 | case DW_FORM_data8: | |
663c44ac | 24727 | case DW_FORM_implicit_const: |
3690dd37 JB |
24728 | return 1; |
24729 | default: | |
24730 | return 0; | |
24731 | } | |
24732 | } | |
24733 | ||
7771576e SA |
24734 | |
24735 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
24736 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
24737 | ||
24738 | static int | |
6e5a29e1 | 24739 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
24740 | { |
24741 | switch (attr->form) | |
24742 | { | |
24743 | case DW_FORM_ref_addr: | |
24744 | case DW_FORM_ref1: | |
24745 | case DW_FORM_ref2: | |
24746 | case DW_FORM_ref4: | |
24747 | case DW_FORM_ref8: | |
24748 | case DW_FORM_ref_udata: | |
24749 | case DW_FORM_GNU_ref_alt: | |
24750 | return 1; | |
24751 | default: | |
24752 | return 0; | |
24753 | } | |
24754 | } | |
24755 | ||
3019eac3 DE |
24756 | /* Return the .debug_loc section to use for CU. |
24757 | For DWO files use .debug_loc.dwo. */ | |
24758 | ||
24759 | static struct dwarf2_section_info * | |
24760 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24761 | { | |
518817b3 SM |
24762 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24763 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 24764 | |
3019eac3 | 24765 | if (cu->dwo_unit) |
43988095 JK |
24766 | { |
24767 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24768 | ||
24769 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
24770 | } | |
24771 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
24772 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
24773 | } |
24774 | ||
8cf6f0b1 TT |
24775 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24776 | ||
24777 | static void | |
24778 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24779 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24780 | const struct attribute *attr) |
8cf6f0b1 | 24781 | { |
518817b3 SM |
24782 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24783 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
24784 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24785 | ||
24786 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
24787 | |
24788 | baton->per_cu = cu->per_cu; | |
24789 | gdb_assert (baton->per_cu); | |
24790 | /* We don't know how long the location list is, but make sure we | |
24791 | don't run off the edge of the section. */ | |
3019eac3 DE |
24792 | baton->size = section->size - DW_UNSND (attr); |
24793 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 24794 | baton->base_address = cu->base_address; |
f664829e | 24795 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24796 | } |
24797 | ||
4c2df51b | 24798 | static void |
ff39bb5e | 24799 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24800 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24801 | { |
518817b3 SM |
24802 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24803 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24804 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 24805 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24806 | |
3690dd37 | 24807 | if (attr_form_is_section_offset (attr) |
3019eac3 | 24808 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24809 | the section. If so, fall through to the complaint in the |
24810 | other branch. */ | |
3019eac3 | 24811 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 24812 | { |
0d53c4c4 | 24813 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24814 | |
8d749320 | 24815 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24816 | |
8cf6f0b1 | 24817 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24818 | |
d00adf39 | 24819 | if (cu->base_known == 0) |
0d53c4c4 | 24820 | complaint (&symfile_complaints, |
3e43a32a MS |
24821 | _("Location list used without " |
24822 | "specifying the CU base address.")); | |
4c2df51b | 24823 | |
f1e6e072 TT |
24824 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24825 | ? dwarf2_loclist_block_index | |
24826 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24827 | SYMBOL_LOCATION_BATON (sym) = baton; |
24828 | } | |
24829 | else | |
24830 | { | |
24831 | struct dwarf2_locexpr_baton *baton; | |
24832 | ||
8d749320 | 24833 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
24834 | baton->per_cu = cu->per_cu; |
24835 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
24836 | |
24837 | if (attr_form_is_block (attr)) | |
24838 | { | |
24839 | /* Note that we're just copying the block's data pointer | |
24840 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24841 | info_buffer for SYM's objfile; right now we never release |
24842 | that buffer, but when we do clean up properly this may | |
24843 | need to change. */ | |
0d53c4c4 DJ |
24844 | baton->size = DW_BLOCK (attr)->size; |
24845 | baton->data = DW_BLOCK (attr)->data; | |
24846 | } | |
24847 | else | |
24848 | { | |
24849 | dwarf2_invalid_attrib_class_complaint ("location description", | |
24850 | SYMBOL_NATURAL_NAME (sym)); | |
24851 | baton->size = 0; | |
0d53c4c4 | 24852 | } |
6e70227d | 24853 | |
f1e6e072 TT |
24854 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24855 | ? dwarf2_locexpr_block_index | |
24856 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24857 | SYMBOL_LOCATION_BATON (sym) = baton; |
24858 | } | |
4c2df51b | 24859 | } |
6502dd73 | 24860 | |
9aa1f1e3 TT |
24861 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
24862 | came from a separate debuginfo file, then the master objfile is | |
24863 | returned. */ | |
ae0d2f24 UW |
24864 | |
24865 | struct objfile * | |
24866 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
24867 | { | |
e3b94546 | 24868 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
24869 | |
24870 | /* Return the master objfile, so that we can report and look up the | |
24871 | correct file containing this variable. */ | |
24872 | if (objfile->separate_debug_objfile_backlink) | |
24873 | objfile = objfile->separate_debug_objfile_backlink; | |
24874 | ||
24875 | return objfile; | |
24876 | } | |
24877 | ||
96408a79 SA |
24878 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
24879 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
24880 | CU_HEADERP first. */ | |
24881 | ||
24882 | static const struct comp_unit_head * | |
24883 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
24884 | struct dwarf2_per_cu_data *per_cu) | |
24885 | { | |
d521ce57 | 24886 | const gdb_byte *info_ptr; |
96408a79 SA |
24887 | |
24888 | if (per_cu->cu) | |
24889 | return &per_cu->cu->header; | |
24890 | ||
9c541725 | 24891 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
24892 | |
24893 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
24894 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
24895 | rcuh_kind::COMPILE); | |
96408a79 SA |
24896 | |
24897 | return cu_headerp; | |
24898 | } | |
24899 | ||
ae0d2f24 UW |
24900 | /* Return the address size given in the compilation unit header for CU. */ |
24901 | ||
98714339 | 24902 | int |
ae0d2f24 UW |
24903 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
24904 | { | |
96408a79 SA |
24905 | struct comp_unit_head cu_header_local; |
24906 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 24907 | |
96408a79 SA |
24908 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24909 | ||
24910 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
24911 | } |
24912 | ||
9eae7c52 TT |
24913 | /* Return the offset size given in the compilation unit header for CU. */ |
24914 | ||
24915 | int | |
24916 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
24917 | { | |
96408a79 SA |
24918 | struct comp_unit_head cu_header_local; |
24919 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 24920 | |
96408a79 SA |
24921 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24922 | ||
24923 | return cu_headerp->offset_size; | |
24924 | } | |
24925 | ||
24926 | /* See its dwarf2loc.h declaration. */ | |
24927 | ||
24928 | int | |
24929 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
24930 | { | |
24931 | struct comp_unit_head cu_header_local; | |
24932 | const struct comp_unit_head *cu_headerp; | |
24933 | ||
24934 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
24935 | ||
24936 | if (cu_headerp->version == 2) | |
24937 | return cu_headerp->addr_size; | |
24938 | else | |
24939 | return cu_headerp->offset_size; | |
181cebd4 JK |
24940 | } |
24941 | ||
9aa1f1e3 TT |
24942 | /* Return the text offset of the CU. The returned offset comes from |
24943 | this CU's objfile. If this objfile came from a separate debuginfo | |
24944 | file, then the offset may be different from the corresponding | |
24945 | offset in the parent objfile. */ | |
24946 | ||
24947 | CORE_ADDR | |
24948 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
24949 | { | |
e3b94546 | 24950 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
9aa1f1e3 TT |
24951 | |
24952 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
24953 | } | |
24954 | ||
43988095 JK |
24955 | /* Return DWARF version number of PER_CU. */ |
24956 | ||
24957 | short | |
24958 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
24959 | { | |
24960 | return per_cu->dwarf_version; | |
24961 | } | |
24962 | ||
348e048f DE |
24963 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
24964 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
24965 | |
24966 | static struct dwarf2_per_cu_data * | |
9c541725 | 24967 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 24968 | unsigned int offset_in_dwz, |
ed2dc618 | 24969 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
24970 | { |
24971 | struct dwarf2_per_cu_data *this_cu; | |
24972 | int low, high; | |
36586728 | 24973 | const sect_offset *cu_off; |
ae038cb0 | 24974 | |
ae038cb0 | 24975 | low = 0; |
b76e467d | 24976 | high = dwarf2_per_objfile->all_comp_units.size () - 1; |
ae038cb0 DJ |
24977 | while (high > low) |
24978 | { | |
36586728 | 24979 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24980 | int mid = low + (high - low) / 2; |
9a619af0 | 24981 | |
36586728 | 24982 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
9c541725 | 24983 | cu_off = &mid_cu->sect_off; |
36586728 | 24984 | if (mid_cu->is_dwz > offset_in_dwz |
9c541725 | 24985 | || (mid_cu->is_dwz == offset_in_dwz && *cu_off >= sect_off)) |
ae038cb0 DJ |
24986 | high = mid; |
24987 | else | |
24988 | low = mid + 1; | |
24989 | } | |
24990 | gdb_assert (low == high); | |
36586728 | 24991 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
9c541725 PA |
24992 | cu_off = &this_cu->sect_off; |
24993 | if (this_cu->is_dwz != offset_in_dwz || *cu_off > sect_off) | |
ae038cb0 | 24994 | { |
36586728 | 24995 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24996 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24997 | "offset %s [in module %s]"), |
24998 | sect_offset_str (sect_off), | |
ed2dc618 | 24999 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 25000 | |
9c541725 PA |
25001 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
25002 | <= sect_off); | |
ae038cb0 DJ |
25003 | return dwarf2_per_objfile->all_comp_units[low-1]; |
25004 | } | |
25005 | else | |
25006 | { | |
25007 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
b76e467d | 25008 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 25009 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25010 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25011 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25012 | return this_cu; |
25013 | } | |
25014 | } | |
25015 | ||
23745b47 | 25016 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25017 | |
fcd3b13d SM |
25018 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25019 | : per_cu (per_cu_), | |
25020 | mark (0), | |
25021 | has_loclist (0), | |
25022 | checked_producer (0), | |
25023 | producer_is_gxx_lt_4_6 (0), | |
25024 | producer_is_gcc_lt_4_3 (0), | |
25025 | producer_is_icc_lt_14 (0), | |
25026 | processing_has_namespace_info (0) | |
93311388 | 25027 | { |
fcd3b13d SM |
25028 | per_cu->cu = this; |
25029 | } | |
25030 | ||
25031 | /* Destroy a dwarf2_cu. */ | |
25032 | ||
25033 | dwarf2_cu::~dwarf2_cu () | |
25034 | { | |
25035 | per_cu->cu = NULL; | |
9816fde3 JK |
25036 | } |
25037 | ||
25038 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25039 | ||
25040 | static void | |
95554aad TT |
25041 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25042 | enum language pretend_language) | |
9816fde3 JK |
25043 | { |
25044 | struct attribute *attr; | |
25045 | ||
25046 | /* Set the language we're debugging. */ | |
25047 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
25048 | if (attr) | |
25049 | set_cu_language (DW_UNSND (attr), cu); | |
25050 | else | |
9cded63f | 25051 | { |
95554aad | 25052 | cu->language = pretend_language; |
9cded63f TT |
25053 | cu->language_defn = language_def (cu->language); |
25054 | } | |
dee91e82 | 25055 | |
7d45c7c3 | 25056 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25057 | } |
25058 | ||
ae038cb0 DJ |
25059 | /* Increase the age counter on each cached compilation unit, and free |
25060 | any that are too old. */ | |
25061 | ||
25062 | static void | |
ed2dc618 | 25063 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25064 | { |
25065 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25066 | ||
25067 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25068 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25069 | while (per_cu != NULL) | |
25070 | { | |
25071 | per_cu->cu->last_used ++; | |
b4f54984 | 25072 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25073 | dwarf2_mark (per_cu->cu); |
25074 | per_cu = per_cu->cu->read_in_chain; | |
25075 | } | |
25076 | ||
25077 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25078 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25079 | while (per_cu != NULL) | |
25080 | { | |
25081 | struct dwarf2_per_cu_data *next_cu; | |
25082 | ||
25083 | next_cu = per_cu->cu->read_in_chain; | |
25084 | ||
25085 | if (!per_cu->cu->mark) | |
25086 | { | |
fcd3b13d | 25087 | delete per_cu->cu; |
ae038cb0 DJ |
25088 | *last_chain = next_cu; |
25089 | } | |
25090 | else | |
25091 | last_chain = &per_cu->cu->read_in_chain; | |
25092 | ||
25093 | per_cu = next_cu; | |
25094 | } | |
25095 | } | |
25096 | ||
25097 | /* Remove a single compilation unit from the cache. */ | |
25098 | ||
25099 | static void | |
dee91e82 | 25100 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25101 | { |
25102 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25103 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25104 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25105 | |
25106 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25107 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25108 | while (per_cu != NULL) | |
25109 | { | |
25110 | struct dwarf2_per_cu_data *next_cu; | |
25111 | ||
25112 | next_cu = per_cu->cu->read_in_chain; | |
25113 | ||
dee91e82 | 25114 | if (per_cu == target_per_cu) |
ae038cb0 | 25115 | { |
fcd3b13d | 25116 | delete per_cu->cu; |
dee91e82 | 25117 | per_cu->cu = NULL; |
ae038cb0 DJ |
25118 | *last_chain = next_cu; |
25119 | break; | |
25120 | } | |
25121 | else | |
25122 | last_chain = &per_cu->cu->read_in_chain; | |
25123 | ||
25124 | per_cu = next_cu; | |
25125 | } | |
25126 | } | |
25127 | ||
fe3e1990 DJ |
25128 | /* Release all extra memory associated with OBJFILE. */ |
25129 | ||
25130 | void | |
25131 | dwarf2_free_objfile (struct objfile *objfile) | |
25132 | { | |
ed2dc618 SM |
25133 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25134 | = get_dwarf2_per_objfile (objfile); | |
fe3e1990 | 25135 | |
fd90ace4 | 25136 | delete dwarf2_per_objfile; |
fe3e1990 DJ |
25137 | } |
25138 | ||
dee91e82 DE |
25139 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25140 | We store these in a hash table separate from the DIEs, and preserve them | |
25141 | when the DIEs are flushed out of cache. | |
25142 | ||
25143 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25144 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25145 | or the type may come from a DWO file. Furthermore, while it's more logical |
25146 | to use per_cu->section+offset, with Fission the section with the data is in | |
25147 | the DWO file but we don't know that section at the point we need it. | |
25148 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25149 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25150 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25151 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25152 | |
dee91e82 | 25153 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25154 | { |
dee91e82 | 25155 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25156 | sect_offset sect_off; |
1c379e20 DJ |
25157 | struct type *type; |
25158 | }; | |
25159 | ||
dee91e82 | 25160 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25161 | |
25162 | static hashval_t | |
dee91e82 | 25163 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25164 | { |
9a3c8263 SM |
25165 | const struct dwarf2_per_cu_offset_and_type *ofs |
25166 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25167 | |
9c541725 | 25168 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25169 | } |
25170 | ||
dee91e82 | 25171 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25172 | |
25173 | static int | |
dee91e82 | 25174 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25175 | { |
9a3c8263 SM |
25176 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25177 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25178 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25179 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25180 | |
dee91e82 | 25181 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25182 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25183 | } |
25184 | ||
25185 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25186 | table if necessary. For convenience, return TYPE. |
25187 | ||
25188 | The DIEs reading must have careful ordering to: | |
25189 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
25190 | reading current DIE. | |
25191 | * Not trying to dereference contents of still incompletely read in types | |
25192 | while reading in other DIEs. | |
25193 | * Enable referencing still incompletely read in types just by a pointer to | |
25194 | the type without accessing its fields. | |
25195 | ||
25196 | Therefore caller should follow these rules: | |
25197 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25198 | before building the type and calling set_die_type. | |
e71ec853 | 25199 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25200 | possible before fetching more types to complete the current type. |
25201 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25202 | |
f792889a | 25203 | static struct type * |
1c379e20 DJ |
25204 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25205 | { | |
518817b3 SM |
25206 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25207 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25208 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25209 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25210 | struct attribute *attr; |
25211 | struct dynamic_prop prop; | |
1c379e20 | 25212 | |
b4ba55a1 JB |
25213 | /* For Ada types, make sure that the gnat-specific data is always |
25214 | initialized (if not already set). There are a few types where | |
25215 | we should not be doing so, because the type-specific area is | |
25216 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25217 | where the type-specific area is used to store the floatformat). | |
25218 | But this is not a problem, because the gnat-specific information | |
25219 | is actually not needed for these types. */ | |
25220 | if (need_gnat_info (cu) | |
25221 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25222 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25223 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25224 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25225 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25226 | && !HAVE_GNAT_AUX_INFO (type)) |
25227 | INIT_GNAT_SPECIFIC (type); | |
25228 | ||
3f2f83dd KB |
25229 | /* Read DW_AT_allocated and set in type. */ |
25230 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25231 | if (attr_form_is_block (attr)) | |
25232 | { | |
25233 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25234 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25235 | } |
25236 | else if (attr != NULL) | |
25237 | { | |
25238 | complaint (&symfile_complaints, | |
9d8780f0 | 25239 | _("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25240 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25241 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25242 | } |
25243 | ||
25244 | /* Read DW_AT_associated and set in type. */ | |
25245 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25246 | if (attr_form_is_block (attr)) | |
25247 | { | |
25248 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25249 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25250 | } |
25251 | else if (attr != NULL) | |
25252 | { | |
25253 | complaint (&symfile_complaints, | |
9d8780f0 | 25254 | _("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25255 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25256 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25257 | } |
25258 | ||
3cdcd0ce JB |
25259 | /* Read DW_AT_data_location and set in type. */ |
25260 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25261 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25262 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25263 | |
dee91e82 | 25264 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25265 | { |
dee91e82 DE |
25266 | dwarf2_per_objfile->die_type_hash = |
25267 | htab_create_alloc_ex (127, | |
25268 | per_cu_offset_and_type_hash, | |
25269 | per_cu_offset_and_type_eq, | |
25270 | NULL, | |
25271 | &objfile->objfile_obstack, | |
25272 | hashtab_obstack_allocate, | |
25273 | dummy_obstack_deallocate); | |
f792889a | 25274 | } |
1c379e20 | 25275 | |
dee91e82 | 25276 | ofs.per_cu = cu->per_cu; |
9c541725 | 25277 | ofs.sect_off = die->sect_off; |
1c379e20 | 25278 | ofs.type = type; |
dee91e82 DE |
25279 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25280 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
25281 | if (*slot) |
25282 | complaint (&symfile_complaints, | |
9d8780f0 SM |
25283 | _("A problem internal to GDB: DIE %s has type already set"), |
25284 | sect_offset_str (die->sect_off)); | |
8d749320 SM |
25285 | *slot = XOBNEW (&objfile->objfile_obstack, |
25286 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25287 | **slot = ofs; |
f792889a | 25288 | return type; |
1c379e20 DJ |
25289 | } |
25290 | ||
9c541725 | 25291 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25292 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25293 | |
25294 | static struct type * | |
9c541725 | 25295 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25296 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25297 | { |
dee91e82 | 25298 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25299 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25300 | |
dee91e82 | 25301 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25302 | return NULL; |
1c379e20 | 25303 | |
dee91e82 | 25304 | ofs.per_cu = per_cu; |
9c541725 | 25305 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25306 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25307 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25308 | if (slot) |
25309 | return slot->type; | |
25310 | else | |
25311 | return NULL; | |
25312 | } | |
25313 | ||
02142a6c | 25314 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25315 | or return NULL if DIE does not have a saved type. */ |
25316 | ||
25317 | static struct type * | |
25318 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25319 | { | |
9c541725 | 25320 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25321 | } |
25322 | ||
10b3939b DJ |
25323 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25324 | ||
25325 | static void | |
25326 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25327 | struct dwarf2_per_cu_data *ref_per_cu) | |
25328 | { | |
25329 | void **slot; | |
25330 | ||
25331 | if (cu->dependencies == NULL) | |
25332 | cu->dependencies | |
25333 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25334 | NULL, &cu->comp_unit_obstack, | |
25335 | hashtab_obstack_allocate, | |
25336 | dummy_obstack_deallocate); | |
25337 | ||
25338 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25339 | if (*slot == NULL) | |
25340 | *slot = ref_per_cu; | |
25341 | } | |
1c379e20 | 25342 | |
f504f079 DE |
25343 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25344 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25345 | cache that we must keep because we are keeping CU. */ |
25346 | ||
10b3939b DJ |
25347 | static int |
25348 | dwarf2_mark_helper (void **slot, void *data) | |
25349 | { | |
25350 | struct dwarf2_per_cu_data *per_cu; | |
25351 | ||
25352 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25353 | |
25354 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25355 | reading of the chain. As such dependencies remain valid it is not much | |
25356 | useful to track and undo them during QUIT cleanups. */ | |
25357 | if (per_cu->cu == NULL) | |
25358 | return 1; | |
25359 | ||
10b3939b DJ |
25360 | if (per_cu->cu->mark) |
25361 | return 1; | |
25362 | per_cu->cu->mark = 1; | |
25363 | ||
25364 | if (per_cu->cu->dependencies != NULL) | |
25365 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25366 | ||
25367 | return 1; | |
25368 | } | |
25369 | ||
f504f079 DE |
25370 | /* Set the mark field in CU and in every other compilation unit in the |
25371 | cache that we must keep because we are keeping CU. */ | |
25372 | ||
ae038cb0 DJ |
25373 | static void |
25374 | dwarf2_mark (struct dwarf2_cu *cu) | |
25375 | { | |
25376 | if (cu->mark) | |
25377 | return; | |
25378 | cu->mark = 1; | |
10b3939b DJ |
25379 | if (cu->dependencies != NULL) |
25380 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25381 | } |
25382 | ||
25383 | static void | |
25384 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25385 | { | |
25386 | while (per_cu) | |
25387 | { | |
25388 | per_cu->cu->mark = 0; | |
25389 | per_cu = per_cu->cu->read_in_chain; | |
25390 | } | |
72bf9492 DJ |
25391 | } |
25392 | ||
72bf9492 DJ |
25393 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25394 | is its offset in .debug_info for this objfile. */ | |
25395 | ||
25396 | static hashval_t | |
25397 | partial_die_hash (const void *item) | |
25398 | { | |
9a3c8263 SM |
25399 | const struct partial_die_info *part_die |
25400 | = (const struct partial_die_info *) item; | |
9a619af0 | 25401 | |
9c541725 | 25402 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25403 | } |
25404 | ||
25405 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25406 | are equal if they have the same offset. */ | |
25407 | ||
25408 | static int | |
25409 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25410 | { | |
9a3c8263 SM |
25411 | const struct partial_die_info *part_die_lhs |
25412 | = (const struct partial_die_info *) item_lhs; | |
25413 | const struct partial_die_info *part_die_rhs | |
25414 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25415 | |
9c541725 | 25416 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25417 | } |
25418 | ||
b4f54984 DE |
25419 | static struct cmd_list_element *set_dwarf_cmdlist; |
25420 | static struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25421 | |
25422 | static void | |
981a3fb3 | 25423 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25424 | { |
b4f54984 | 25425 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25426 | gdb_stdout); |
ae038cb0 DJ |
25427 | } |
25428 | ||
25429 | static void | |
981a3fb3 | 25430 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25431 | { |
b4f54984 | 25432 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25433 | } |
25434 | ||
cd4fb1b2 | 25435 | int dwarf_always_disassemble; |
437afbb8 | 25436 | |
437afbb8 | 25437 | static void |
cd4fb1b2 SM |
25438 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
25439 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25440 | { |
cd4fb1b2 SM |
25441 | fprintf_filtered (file, |
25442 | _("Whether to always disassemble " | |
25443 | "DWARF expressions is %s.\n"), | |
25444 | value); | |
9291a0cd TT |
25445 | } |
25446 | ||
9291a0cd | 25447 | static void |
cd4fb1b2 SM |
25448 | show_check_physname (struct ui_file *file, int from_tty, |
25449 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25450 | { |
cd4fb1b2 SM |
25451 | fprintf_filtered (file, |
25452 | _("Whether to check \"physname\" is %s.\n"), | |
25453 | value); | |
9291a0cd TT |
25454 | } |
25455 | ||
cd4fb1b2 SM |
25456 | void |
25457 | _initialize_dwarf2_read (void) | |
9291a0cd | 25458 | { |
9291a0cd | 25459 | |
cd4fb1b2 | 25460 | dwarf2_objfile_data_key = register_objfile_data (); |
156942c7 | 25461 | |
cd4fb1b2 SM |
25462 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
25463 | Set DWARF specific variables.\n\ | |
25464 | Configure DWARF variables such as the cache size"), | |
25465 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
25466 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25467 | |
cd4fb1b2 SM |
25468 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
25469 | Show DWARF specific variables\n\ | |
25470 | Show DWARF variables such as the cache size"), | |
25471 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
25472 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25473 | |
cd4fb1b2 SM |
25474 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25475 | &dwarf_max_cache_age, _("\ | |
25476 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25477 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25478 | A higher limit means that cached compilation units will be stored\n\ | |
25479 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25480 | caching, which can slow down startup."), | |
25481 | NULL, | |
25482 | show_dwarf_max_cache_age, | |
25483 | &set_dwarf_cmdlist, | |
25484 | &show_dwarf_cmdlist); | |
156942c7 | 25485 | |
cd4fb1b2 SM |
25486 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
25487 | &dwarf_always_disassemble, _("\ | |
25488 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
25489 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
25490 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
25491 | syntax. When disabled, expressions will be printed in a more\n\ | |
25492 | conversational style, when possible."), | |
25493 | NULL, | |
25494 | show_dwarf_always_disassemble, | |
25495 | &set_dwarf_cmdlist, | |
25496 | &show_dwarf_cmdlist); | |
9291a0cd | 25497 | |
cd4fb1b2 SM |
25498 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25499 | Set debugging of the DWARF reader."), _("\ | |
25500 | Show debugging of the DWARF reader."), _("\ | |
25501 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25502 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25503 | information. A value greater than 1 provides more verbose information."), | |
25504 | NULL, | |
25505 | NULL, | |
25506 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25507 | |
cd4fb1b2 SM |
25508 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25509 | Set debugging of the DWARF DIE reader."), _("\ | |
25510 | Show debugging of the DWARF DIE reader."), _("\ | |
25511 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25512 | The value is the maximum depth to print."), | |
25513 | NULL, | |
25514 | NULL, | |
25515 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25516 | |
cd4fb1b2 SM |
25517 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25518 | Set debugging of the dwarf line reader."), _("\ | |
25519 | Show debugging of the dwarf line reader."), _("\ | |
25520 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25521 | A value of 1 (one) provides basic information.\n\ | |
25522 | A value greater than 1 provides more verbose information."), | |
25523 | NULL, | |
25524 | NULL, | |
25525 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25526 | |
cd4fb1b2 SM |
25527 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25528 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25529 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25530 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25531 | the demangler."), | |
25532 | NULL, show_check_physname, | |
25533 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25534 | |
e615022a DE |
25535 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25536 | no_class, &use_deprecated_index_sections, _("\ | |
25537 | Set whether to use deprecated gdb_index sections."), _("\ | |
25538 | Show whether to use deprecated gdb_index sections."), _("\ | |
25539 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25540 | Normally they are ignored either because of a missing feature or\n\ | |
25541 | performance issue.\n\ | |
25542 | Warning: This option must be enabled before gdb reads the file."), | |
25543 | NULL, | |
25544 | NULL, | |
25545 | &setlist, &showlist); | |
25546 | ||
f1e6e072 TT |
25547 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25548 | &dwarf2_locexpr_funcs); | |
25549 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25550 | &dwarf2_loclist_funcs); | |
25551 | ||
25552 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25553 | &dwarf2_block_frame_base_locexpr_funcs); | |
25554 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25555 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25556 | |
25557 | #if GDB_SELF_TEST | |
25558 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25559 | selftests::dw2_expand_symtabs_matching::run_test); | |
25560 | #endif | |
6502dd73 | 25561 | } |